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1、BRITISH STANDARD BS ISO 5707:1996 Incorporating Amendment No. 1 Milking machine installations Construction and performance ICS 65.040.10 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 5707:1996 This British Standard, having been prep
2、ared under the direction of the Consumer Products and Services Sector Board, was published under the authority of the Standards Board and comes into effect on 15 April 1997 BSI 04-2000 ISBN 0 580 27264 8 Amendments issued since publication Amd. No.DateComments 9717November 1997 Indicated by a sideli
3、ne in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 5707:1996 BSI 04-2000i Contents Page National forewordii Forewordv Text of ISO 57071 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Unco
4、ntrolled Copy, (c) BSI BS ISO 5707:1996 ii BSI 04-2000 National foreword This British Standard reproduces verbatim ISO 5707:1996 and implements it as the UK national standard. It supersedes BS 5545-2:1988 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committe
5、e AW/32, Milking machine installations, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international a
6、nd European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request. This standard was produced by a joint working group of ISO and the International Dairy Federation (IDF). It is a specification for construction and performance. R
7、eference should be made to BS ISO 3918 Milking machine installations Vocabulary, and to BS ISO 6690 Milking machine installations Mechanical tests. This standard has been amended to take account of up-to-date research, field experience and technical developments in milking and represents an internat
8、ional consensus of opinion. The specifications relate to the milking and cleaning performance of complete installations. Performance requirements for complete installations together with those for individual components are included. Positions of test points have been amended so that testing provides
9、 an accurate representation of an installations performance during operation. In addition to operating and reserve requirements, the air flow necessary to ensure effective cleaning solution flow characteristics in pipeline milking installations is taken into account in the guidelines for vacuum pump
10、 capacity. The minimum levels of effective reserve specified have been increased to reflect the potential for greater levels of accidental air admission through modern clusters and also the effect of air admission on smaller installations. The guidelines for sizing of milklines are aimed to eliminat
11、e, or minimize, the potentially damaging effects of milk slug formation. This is where the milkline fills with milk, causing excessive vacuum fluctuations at the teat end. Recommendations for milkline size now take account of the effect of slope, recognizing that increasing the slope permits more mi
12、lking units to be attached to a line of given size. Reference should also be made to BS 4285 Microbiological examination for dairy purposes and to BS 5226 Code of practice for equipment and procedures for the cleaning and disinfecting of milking machine installations. Annex A, Annex B and Annex C ar
13、e for information only. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or using the “Find” facility of th
14、e BSI Standards Electronic Catalogue. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 5707:1996 BSI 04-2000iii A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are r
15、esponsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, the ISO title page, pages ii to vi, pages 1 to 27 and a back cover. Th
16、is standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: shef
17、fieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 5707:1996 ii BSI 04-2000 Contents Page Forewordv Introduction1 1Scope1 2Normative references1 3Def
18、initions1 4General2 4.1Tests for compliance2 4.2Access for measurements2 4.3Safety2 4.4Cleaning2 4.5Material3 4.6Instructions for use and maintenance3 5Vacuum pumps3 5.1Effective reserve3 5.2Influence of altitude4 5.3Exhaust4 5.4Prevention of reverse flow through vacuum pump4 5.5Location4 5.6Marking
19、4 6Vacuum regulation4 6.1Mounting4 6.2Regulation sensitivity4 6.3Regulation loss4 6.4Regulator leakage4 6.5Marking and specification5 7Vacuum gauge5 7.1General5 7.2Mounting5 8Airlines5 8.1General5 8.2Cleaning5 8.3Internal diameter and air flow5 8.4Leakage5 9Interceptor and sanitary trap5 9.1Intercep
20、tor5 9.2Sanitary trap6 10Pulsation system6 10.1Design data6 10.2Pulsation rate6 10.3Pulsator ratio6 10.4Pulsation phases6 11Milk system6 11.1Leakage6 11.2Drainage6 11.3Milk cocks and milk inlets6 11.4Milklines6 11.5Design of milklines6 12Bucket milking machines7 12.1Bucket units7 12.2Vacuum taps7 Li
21、censed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 5707:1996 BSI 04-2000iii Page 13Milk recording equipment7 13.1Recorder jars7 14Attachments in the milking vacuum system7 15Long milk tubes7 16Cluster assembly8 16.1Teatcup8 16.2Vacuum shut
22、-off8 16.3Air vent and leakage8 17Ancillary equipment8 18Receiver8 19Releaser8 19.1General8 19.2Control of releaser milk pumps8 20Delivery line9 Annex A (informative) Vacuum pump capacity Effective reserve plus tolerances10 Annex B (informative) Determination of minimum internal diameter of airlines
23、14 Annex C (informative) Determination of the minimum internal diameter of milklines20 Table 1 Minimum effective reserve with automatic shut-off valve at the milking unit4 Table A.1 Minimum effective reserve for milking10 Table A.2 Air demand for cleaning at a speed of 8 m/s and under atmospheric pr
24、essure of 100 kPa11 Table A.3 Standard atmospheric pressures (pa), and correction factors H at various altitudes12 Table B.1 Recommended minimum pipeline diameters for a design limit of 1 kPa vacuum drop due to air flow in straight smooth pipelines15 Table B.2 Recommended minimum pipeline diameters
25、for a design limit of 1 kPa vacuum drop due to air flow in straight looped smooth pipelines16 Table B.3 Recommended minimum airline diameters for a design limit of 1 kPa vacuum drop due to air flow in straight galvanized pipelines17 Table B.4 Recommended minimum airline diameters for a design limit
26、of 1 kPa vacuum drop due to air flow in straight looped galvanized pipelines18 Table B.5 Equivalent length of pipe for various fittings19 Table C.1 Maximum predicted milk flow rate in milklines22 Table C.2 Maximum milk flow per slope in a looped near-horizontal milkline23 Table C.3 Maximum number of
27、 units per slope for near-horizontal milklines or stanchion barns Peak flow milking rate of 4 l/min23 Table C.4 Maximum number of units per slope for near-horizontal milklines or stanchion barns Peak flow milking rate of 5 l/min24 Table C.5 Maximum milk flow per slope to ensure that stratified flow
28、is the normal flow condition during milking25 Table C.6 Maximum number of units per slope for parlours Attachment rate of 10 s and peak milking rate of 4 l/min per cow26 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 5707:1996 iv BSI
29、 04-2000 Page Table C.7 Maximum number of units per slope for parlours Attachment rate of 10 s and peak flow milking rate of 5 l/min per cow26 Table C.8 Maximum number of units per slope in stanchion barns with 50 s attachment rate and peak milking rate of 4 l/min per cow27 Table C.9 Maximum number
30、of units per slope in stanchion barns with 50 s attachment rate and peak milking rate of 5 l/min per cow27 Descriptors: Agricultural machinery, livestock equipment, mechanical milking installation, construction, specifications, performance, operating requirements, dimensions, marking, instructions.
31、Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 5707:1996 BSI 04-2000v Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing
32、 International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organisations, governmental and non-governmental, in liais
33、on with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication
34、 as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 5707 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, in collaboration with the International Dairy Federation (IDF) and
35、 the International Committee for Recording the Productivity of Milk Animals (ICRPMA), now named the International Committee for Animal Recording (ICAR). This second edition cancels and replaces the first edition (ISO 5707:1983), which has been amended based on new scientific knowledge, field experie
36、nces and technical development. Annex A, Annex B and Annex C of this International Standard are for information only. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI vi blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GM
37、T+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 5707:1996 BSI 04-20001 Introduction This International Standard was developed in response to worldwide demand for minimum specifications for milking machine installations. The basic requirements for the construction and performance of milking machines
38、for animals are determined by the physiology of the animal and the need for a standard of high hygiene and milk quality. In addition, the equipment has to be effective, easy and safe to use and test. Since most milking machines depend on a public electricity supply that fails occasionally, alternate
39、 means for operating the machine in such emergencies should be installed. It is important to design and install the equipment so that noise levels in the cowshed or parlour and in the vicinity are as low as practicable and comply with requirements in national legislation. Milking equipment and conne
40、ction to milk storage facilities on the farm should be designed and maintained to minimize turbulence, frothing, foaming or agitation, thereby reducing physical damage to the milk fat and the development of free fatty acids. Further safety and hygiene requirements will be covered by legislation that
41、 will be the subject of other International Standards. 1 Scope This International Standard specifies the minimum performance requirements and certain dimensional requirements for satisfactory functioning of milking machines. It also specifies requirements for materials, construction and installation
42、. This International Standard is applicable to milking machines intended for milking cows and water buffaloes. The qualitative requirements also apply to installations for milking sheep and goats or other mammals used for milk production. This International Standard is not expected to apply in every
43、 respect to installations with special design features that are (or may be) available, such as: single-pipe pipeline milking installations; milking installations with double vacuum systems; milk extraction without pulsation; pulsation pump plants; small mobile installations that have an individual v
44、acuum pump for each unit; separate air and milk transport milking machines; milking installations with compressed air pulsation systems or other special pulsation characteristics. 2 Normative references The following standards contain provisions which, through reference in this text, constitute prov
45、isions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subjected to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the stan
46、dards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 228-1:1994, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation. ISO 3918:, Milking machine installations Vocabulary1). ISO
47、 4288:, Geometrical Product Specification (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture2). ISO 6690:, Milking machine installations Mechanical tests3). ISO/TR 12100-1:1992, Safety of machinery Basic concepts, general principles for design Part 1: Ba
48、sic terminology, methodology. ISO/TR 12100-2:1992, Safety of machinery Basic concepts, general principles for design Part 2: Technical principles and specifications. IEC 335-2-70:1993, Safety of household and similar appliances Part 2: Particular requirements for milking machines. 3 Definitions For
49、the purposes of this International Standard, the following definition and those given in ISO 3918 apply. 3.1 ancillary equipment all equipment powered by the same vacuum source as for the extraction of milk, but not directly used for milk extraction from an animal 1) To be published. (Revision of ISO 3918:1977) 2) To be published. (Revision of ISO 4288:1985) 3) To be published. (Revision of ISO 6690:1983) Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 03:24:33 GMT+00:00 200
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