JP2004298143A - Milk claw of milking machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a milk claw of a two-vacuum type milking machine having a simple structure and good operation performance. <P>SOLUTION: The two-vacuum type milking machine has a pressure regulation chamber separated from a milk passing part with a pressure-regulating diaphragm at the bottom of the machine, and a milk reservoir chamber having nearly constant pressure and a milk discharging chamber having high vacuum are formed by placing a partition in the milk passing part and opening and closing a part of the partition with a valve interlocked with the diaphragm. The milk claw of the milking machine has a column vertically penetrating the milk passing part, an air flow channel formed in the column and connected to the pressure regulation chamber and the upper part of the milk claw, and a connection port for a low-vacuum tube formed at the upper part of the milk claw. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a milk claw used in a vacuum-pumped milking machine with two vacuum systems.
[0002]
[Prior art]
In vacuum-pumped milking machines, there is a two-vacuum milking system that reduces the load on the teat by reducing the vacuum pressure inside the teat cup liner, while allowing milk to be transported at a high vacuum pressure and at high speed. Proposed.
[0003]
Japanese Patent Publication No. 60-19772 describes an example of such a milk claw used for milking of two vacuum systems, which is separated from a milk storage room having a milk inlet and a milk storage room via a diaphragm. It comprises a pressure regulating chamber connected to a low vacuum source for pressure and a high vacuum pressure chamber having a milk outlet which is separated from the milk storage chamber by a plate having a pressure regulating hole in the center and which is opened and closed by a valve. A pressure regulating rod for opening and closing a pressure regulating hole of the plate is connected to the diaphragm. During milking, the pressure regulating rod keeps the vacuum pressure in the milk reservoir at a constant level regardless of the milk flow.
[0004]
Further, in the milk claw described in Japanese Patent Application Laid-Open No. 2003-52259, in the two-claw vacuum milk claw, in order to increase the size of the milk storage chamber while suppressing the vertical dimension, the upper part of the milk claw is partitioned by a claw diaphragm at the bottom of the milk storage chamber. A pressure regulating chamber is provided, a valve housing communicating with the milk outlet is protruded from the side of the milk storage chamber, and a substantially L-shaped milk outflow pipe is provided in the milk storage chamber to provide a valve provided on the side. Guides milk to containment. By providing the inlet opening of the milk outflow pipe at a position where it can face and abut on the upper surface of the claw diaphragm, a pressure regulation gap is configured.
[0005]
In this milk claw, the milk outflow valve and its storage part are provided on the side of the milk storage chamber, which is the main component of the milk claw, and only the pressure control chamber connected to the vacuum tube for pressure control is provided at the bottom of the milk claw. As a result, the size in the vertical direction is smaller than that of the conventional one, and the flat bottom allows the person with small hands to carry it relatively easily.
[0006]
[Problems to be solved by the invention]
However, in the milk claw described in JP-A-2003-52259, the vacuum tube for milking is connected to the upper part of the main body, and the vacuum tube for pressure regulation is connected to the bottom part. The extra force was sometimes in the way of carrying. It was pointed out that this would hinder the effect of making the bottom easy to hold.
[0007]
In addition, the housing of the milk outflow valve protrudes from the side of the main body, and this part had to be formed separately from the main body due to problems such as drainage of washing water. And increased management costs.
[0008]
Accordingly, the present invention provides a milk claw for a milking machine for two vacuum systems, in which the size of the milk claw in the vertical direction is reduced and the connection port of the vacuum tube for pressure regulation is not required to be provided at the bottom, and is easily handled with one hand. The purpose is to provide what can be done. Another object of the present invention is to reduce the manufacturing cost and the management cost by reducing the number of parts by storing the housing of the milk outflow valve inside the milk claw main body.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 of the present application has a pressure regulating chamber at a bottom part, which is separated from a milk passage by a pressure regulating diaphragm, and a part of the milk passage is opened and closed by a valve body interlocking with the diaphragm. In the milk claw of a milking machine for two vacuum systems comprising a milk storage chamber having a substantially constant pressure and a valve housing chamber having a high vacuum pressure, a column which penetrates up and down a milk passage portion is formed. The above-mentioned problem is solved by a milk claw of a milking machine characterized by providing an air passage communicating with the pressure regulating chamber and the upper part of the milk claw inside, and forming a connection port of a low vacuum pressure tube on the upper part of the milk claw. Resolve. In other words, by newly forming a column in the milk passage that connects the connection port of the low vacuum pressure tube at the top and the pressure regulation chamber at the bottom, the vacuum pressure tubes are grouped at the top and easy to handle. is there.
[0010]
The invention according to claim 2 of the present application is the milk claw of the vacuum two-system milking machine according to claim 1, wherein the upper part of the milk claw is formed separately from the milk claw main body, and penetrates the column vertically. The upper part and the main body are connected by a screw inserted into the through hole. By using the column as a coupling member for the upper portion of the milk claw and the main body, it is not necessary to provide a screw portion or the like on the outer wall as in the related art, and the structure can be simplified.
[0011]
In the invention according to claim 3 of the present application, in the invention according to claim 2, by making the cross section of the through hole larger than the cross section of the screw, a part of the through hole can also be used as the air flow path. It was made. There is an advantage that manufacturing is easier than in a case where the air flow path is separately formed.
[0012]
The invention according to claim 4 of the present application is the milk claw of the milking machine according to claims 1 to 3, wherein the partition between the milk storage chamber and the valve storage chamber is forwardly provided from the left and right main body side portions of the outflow valve. A substantially vertical partition portion that is extended and the ends are connected to each other, and a bottom portion that opens below a region inside the side wall at a position facing the valve body, and the side wall and the column body are integrally formed. It is configured. According to a fifth aspect of the present invention, a drain plug is provided at a position corresponding to the milk outflow chamber on the head of the milk claw. The valve storage chamber is formed substantially inside the milk storage chamber, and a drain plug for draining washing water is provided at the top of the milk storage chamber, so that the milk claw body can be integrally formed, The number can be reduced.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, typical embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a milk claw for a vacuum two-system milking machine according to the present invention, and FIGS. 2 and 3 are longitudinal cross-sectional views of the same milk claw in AA section and BB section. This milk claw is mainly composed of a pressure adjusting cap 301, a circular head 302, a substantially cylindrical main body 303, a pressure adjusting diaphragm 304, and a bottom portion 305 constituting a pressure adjusting chamber. Each part is made of a lightweight and strong material such as plastic.
[0014]
The inside of the pressure adjusting cap 301 is divided into several air flow paths by horizontal and vertical partitions, and a large number of connection ports for connecting pressure for pulsation and pressure adjustment are provided on the side surface. To explain each connection port shown in FIGS. 1 and 2, connection ports 311 and 312 are connection ports of a vacuum tube for milking, 311 is connected to a nipple of each teat cup, and 312 is connected to a pulsator. ing. Numerals 311 and 312 communicate internally to supply the teat cup with a pulsating pressure for milking. The connection port 313 is connected to a low vacuum pressure source for pressure regulation, and regulates to a pressure regulation chamber at the bottom, which will be described later, via an air chamber 323 formed between the lower part of the pressure regulation cap 301 and the head 302. Supply vacuum pressure for pressure. (FIG. 5) The three vacuum tubes connected to the connection ports 312 and 313 can be bundled as shown in FIG. 7, and the handling of the teat cup unit becomes easy.
[0015]
The head 302 has four milk inlets 310 that are connected to the liners of each teat cup via milk tubes. A drain plug 336 for discharging washing water or the like is provided in a portion corresponding to a milk outflow chamber described later. Further, openings corresponding to a screw hole 333 and an air flow path 334 described later are provided.
[0016]
The main body 303 is a portion that forms a passage portion for milk together with the head portion 302 and the diaphragm 304, and mainly includes a side surface portion 303a, a partition portion 303b, and a bottom portion 303c. A milk outlet 314 is integrally provided on the same side of the side portion 303a as the connection ports 312, 313. The milk outlet 314 is connected to a milk conveying pipe via a milk tube, and a high vacuum is supplied. 315 is a milk outflow valve that can be manually opened and closed. The partition part 303b is a vertical wall body which extends forward from the left and right side parts 303a of the milk outlet 314 and whose ends are connected to each other. When viewed in the vertical direction, the partition portion 303b is in airtight contact with the head portion 302 at the upper end, is connected to the periphery of the bottom portion 303c at the lower end, and connects the milk passage portion inside the main body 303 with the milk storage chamber 320 on the outside and the milk outflow inside the inside. The room 321 is largely divided. A part of the front side of the bottom portion 303c protrudes downward in a substantially cylindrical shape and opens above a valve body to be described later, and forms a pressure regulation gap with the valve body. The lower part of the milk storage chamber 320 opens directly to the upper part of the diaphragm 304. A bleed hole 338 is formed in the side surface 303a. In this embodiment, since the milk storage chamber 320 and the milk outflow chamber 321 are formed integrally, the number of parts is smaller than that in the case where the milk outflow chamber is projected to the side of the main body.
[0017]
In the main body 303, a column 303d is formed in a part of the left and right partition portions 303b so as to vertically pass through the milk passage portion, and a through hole 333 through which a screw 307 is passed inside the column 303d; An air flow path 334 communicating with the upper part of the milk claw is provided. By providing a notch or a gap in a part of the through hole 333, the air flow path 334 can be formed (particularly, see FIG. 6). Although not shown, a notch is provided in a part of the screw thread of the claw nut 331 to form an air flow path. By inserting a screw 307 from the upper part of the pressure adjusting cap 301 to penetrate the through hole 333 and screwing into the screw part of the claw nut 331 inserted from the lower part of the through hole 333, the pressure adjusting cap 301 and the head can be easily formed. The main body 302 and the main body 303 can be combined.
[0018]
Next, the diaphragm 304 is connected to the bottom of the main body 303 together with the bottom portion 305 to form the bottom surface of the milk storage chamber 320. A substantially conical valve element 14 is provided at the center of the diaphragm 304 so as to close the opening when the pressure difference between the milk storage chamber 320 and the pressure regulation chamber 322 exceeds a predetermined level. A pressure regulating chamber 322 is formed between the diaphragm 304 and the bottom portion 305, and a pair of air passages 309 communicating between the air passage 334 in the pillar 303d and the pressure regulating chamber 322 as shown in FIGS. Is formed. The bottom 305 is connected to the bottom 303c of the main body 303 by a screw 335. The entire size is small enough to fit in the palm, and the bottom surface is flat for easy holding.
[0019]
In the milk claw of this embodiment, before milking starts, the milk outflow valve 315 is lowered, and the inside of the milk storage chamber 320 and the milk outflow chamber 321 is maintained at a substantially atmospheric pressure state by the action of the bleed hole 338 and the like. ing. Next, when a low vacuum pressure is supplied to the upper connection port 313, the inside of the pressure regulation chamber 322 becomes a low vacuum pressure via the air chamber 323 and the air flow paths 334 and 309. When milking is started, when the milk outflow valve 315 is manually opened, the inside of the milk outflow chamber 321 and the inside of the milk storage chamber 320 become constant pressure due to the high vacuum pressure supplied to the milk outflow port 314. When the pressure difference between the pressure and the pressure regulating chamber 322 reaches a constant value, the claw diaphragm is pressed upward to close the pressure regulating gap, so that the pressure in the milk storage chamber 320 and the teat cup liner is reduced to a substantially constant low vacuum pressure. Will be kept.
[0020]
Pulsating pressure is supplied to the nipple of the teat cup from the pulsator, and milk is milked by the action of the pulsation, and flows into the milk storage chamber 320 from each milk inlet 310. When milk accumulates in the milk storage chamber 320, the internal vacuum pressure decreases, and the diaphragm 304 is pressed downward to open a pressure regulation gap, so that the accumulated milk flows out through the milk outflow chamber 321. Then, when the vacuum pressure in the milk storage chamber 320 becomes equal to or higher than a predetermined value, the pressure regulation gap is closed again to prevent the milk storage chamber 322 from being in a high vacuum state. Since the pressure adjusting gap is opened and closed to adjust the milking pressure, the vacuum pressure applied to the nipple during milking is always kept at a low vacuum pressure. When the milk claw 3 is attached, the bottom 305 of the milk claw main body can be placed on the palm and safely supported.
[0021]
【The invention's effect】
The milk claw of the present invention has a flat bottom underneath the milk claw and is easy to grasp with one hand, and a low vacuum pressure tube is also connected to the pressure regulating cap on the top of the claw, so that it is compared to a conventional milk claw. Operability is improved.
[0022]
Further, in the apparatus of the present invention, the washing water can be completely drained from the drain plug on the claw head, so that freezing can be prevented, and bacterial growth can be suppressed since the apparatus can be made more dry.
[Brief description of the drawings]
FIG. 1 is a plan view of a milk claw of a milking machine of the present invention.
FIG. 2 is a longitudinal sectional view taken along the line AA of FIG.
FIG. 3 is a vertical sectional view taken along the line BB of FIG. 1;
FIG. 4 is a vertical sectional view of a lower portion of a column in a CC section of FIG. 1;
FIG. 5 is a longitudinal sectional view of the pressure regulating cap taken along the line DD in FIG. 1;
FIG. 6 is a plan view showing the shape of a through hole.
FIG. 7 is a perspective view of a teat cup unit using the milk claw of the present invention.
[Explanation of symbols]
3 Milk claw 301 Pressure adjusting cap 302 Head 303 Body 303a Side 303b Partition 303c Bottom 303d Column 304 Diaphragm 305 Bottom 307 Screw 308 Claw nut 309 Air flow path 333 Through hole 334 Air flow path

Claims (5)

A pressure regulating chamber separated from a milk passage by a diaphragm for pressure regulation is provided at the bottom, and a partition is provided in the milk passage, and a part thereof is opened and closed by a valve body interlocking with the diaphragm, so that the milk is stored at a substantially constant pressure. In the milk claw of a milking machine for two vacuum systems comprising a chamber and a milk outflow chamber of high vacuum pressure, a column is formed which penetrates the milk passage part up and down, and a pressure regulating chamber is formed inside the column. A milk claw for a milking machine, characterized in that an air flow path communicating with the milk claw is provided, and a connection port for a low vacuum pressure tube is formed in the upper part of the milk claw. The milk claw upper part is formed separately from the milk claw main body, and the upper part and the main body are connected by a screw inserted into a through hole vertically penetrating the pillar body. Milk claw of milking machine. The milk claw of a milking machine according to claim 2, wherein a part of the through hole is used as the air flow path by making a cross section of the through hole larger than a cross section of the screw. A partition between the milk storage chamber and the valve storage chamber extends substantially forward from the left and right main body side faces of the outflow valve, and ends are connected to each other. The milk claw for a milking machine according to claim 1, further comprising a bottom portion having a lower portion opened at a position facing the valve body, wherein the side wall and the column body are integrally formed. The milk claw of a milking machine according to claim 4, wherein a drain plug is provided at a position corresponding to the milk outflow chamber at a head of the milk claw.

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