CN106931218B

CN106931218B - Stop valve

Info

Publication number: CN106931218B
Application number: CN201511018364.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2015-12-30
Filing date: 2015-12-30
Publication date: 2020-08-04
Anticipated expiration: 2035-12-30
Also published as: CN106931218A

Abstract

The invention discloses a stop valve which comprises a valve body and a valve seat fixedly arranged with the valve body. The valve body and the mounting plate can be processed separately and can be made of different materials, so that the stamping difficulty of a blank is reduced, the processing of the mounting plate is simplified, the problems of poor stamping and influence on the qualification rate easily existing in the integral stamping of the valve body blank in the prior art are solved, and the manufacturing cost is reduced. And, the valve seat structure that adopts multilayer step portion cooperatees with the valve body, can fix a position and fix the mounting panel ingeniously, and the infiltration of solder when step portion set up again is favorable to welding operation to welding effect has been promoted.

Description

Stop valve

Technical Field

The invention relates to the technical field of valves, in particular to a stop valve for controlling the on-off of a refrigerant.

Background

In an air conditioning system, a shut-off valve is mainly used for connecting an indoor unit and an outdoor unit.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a typical stop valve in the prior art, and fig. 2 is a schematic external view of the typical stop valve in the prior art.

The stop valve comprises a valve body 1 'and a valve rod 2'; wherein, the left end of the valve body 1 ' is provided with a first channel 11 ', and the lower end is provided with a second channel 12 '; the valve rod 2 ' is arranged in the inner cavity of the valve body 1 ', the valve rod 2 ' is provided with external threads, the wall surface of the inner cavity of the valve body 1 ' is provided with internal threads matched with the external threads of the valve rod 2 ', so that when the valve rod 2 ' rotates, the valve rod moves up and down in the inner cavity of the valve body 1 ' under the action of a thread pair so as to close or communicate the first channel 11 ' and the second channel 12 '.

Before the air conditioner is installed, the valve rod 2 'is rotated to move downwards to enable the first channel 11' and the second channel 12 'to be in a closed state, namely fluid passages such as refrigerants are cut off, and after the air conditioner is installed, the valve rod 2' is rotated to move upwards to enable the first channel 11 'and the second channel 12' to be in a communicated state, namely fluid passages such as refrigerants are communicated.

In order to install the stop valve in the system, a pair of symmetrically arranged mounting plates 3 'are further arranged on the peripheral wall of the valve body 1', and a pair of mounting holes 31 'are arranged on the mounting plates 3'. The shut-off valve is fixed to the outdoor unit of the air conditioner by a fastening member such as a screw.

During the forming, the mounting plate 3 'is also typically formed integrally with the valve body 1' by means of an integral stamping, i.e. two mounting plates are stamped out during the stamping process. However, the valve body and the mounting plate are integrally formed in a stamping mode, difficulty is brought to forming and processing of a valve body blank by stamping the mounting plate, the copper rod is long in flowing stroke in the process of stamping the mounting plate, poor stamping of the mounting plate part is prone to cracking, and the qualification rate of the mounting plate part is low. And the valve body blank of integrative stamping forming in-process, the manufacturing procedure is more, and anchor clamps, cutter are also more complicated.

Therefore, how to design a stop valve that simplifies the machining process of the mounting plate and reduces the cost becomes a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a stop valve, which can simplify the processing procedure of a mounting plate and reduce the cost.

Therefore, the invention adopts the following technical scheme:

the stop valve comprises a valve body and a valve seat fixedly arranged on the valve body, and is characterized in that an accommodating part is formed between the valve body and the valve seat, and a mounting plate is arranged in the accommodating part.

The valve seat is provided with a first step part and a second step part which are arranged on the outer peripheral wall and a third step part which is arranged on the inner peripheral wall, the first step part and the second step part are used for being matched with the valve body, and the third step part is used for being matched with the second connecting pipe.

The lower end of the valve body is provided with a fixing part which is matched with the second step part.

The lower tip of valve body still is provided with cooperation portion, cooperation portion with the mounting panel cooperation location.

The mounting plate is provided with a matching hole, and the shape of the matching hole is matched with that of the matching part.

The inner peripheral wall of the matching part is matched with the first step part.

The lower end face of the mounting plate abuts against the abutting face of the valve seat.

The mounting plate is made of stainless steel materials.

The first step portion has an outer diameter larger than that of the second step portion.

The outer edge of the top of the valve seat is also provided with a fourth step part.

According to the stop valve provided by the embodiment of the invention, the valve body and the mounting plate can be processed separately and can be made of different materials, so that the stamping difficulty of a blank is reduced, the processing of the mounting plate is simplified, the problems of poor stamping and influence on the qualified rate easily existing in the integral stamping of the valve body blank in the prior art are solved, and the manufacturing cost is reduced. The installation plate adopts a stainless steel plate cold rolling mode, the stainless steel sheet metal process is quick and simple, the oil smoke generated by hot forging and the waste of brass fins are reduced, and the loss of the stop valve product and the manufacturing cost are lower.

In addition, in the embodiment of the invention, the valve seat structure with multiple layers of step parts is matched with the valve body, so that the mounting plate can be positioned and fixed skillfully, and the step parts are favorable for penetration of solder in welding operation, thereby improving the welding effect.

Drawings

FIG. 1 is a schematic diagram of a typical shut-off valve of the prior art;

FIG. 2 is a schematic external view of a typical shut-off valve of the prior art;

FIG. 3 is a schematic structural view of a first embodiment of a shut-off valve provided in the present invention;

fig. 4 is an exploded view of the first embodiment of the stop valve of the present invention.

Detailed Description

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a stop valve according to a first embodiment of the present invention. The stop valve is used as an operable manual switch valve for disconnecting the refrigerant passage before the air conditioner is installed and connecting the refrigerant passage after the air conditioner is installed.

The stop valve comprises a valve body 1 which is in a hollow cylindrical shape, a valve cavity 11 is formed in the valve body 1, and a valve rod 2 is arranged in the valve cavity 11 and is matched with the valve body through a thread pair. The valve rod 2 can move up and down in the valve cavity 11 under the action of the thread pair, and when the valve rod 2 moves down to the limit position, the valve port 41 arranged on the valve seat 4 can be closed.

A pipe connecting end 5 and a filling end 6 are arranged on the periphery of the valve body 1, wherein the pipe connecting end 5 is used for the circulation of refrigerant, and the filling end 6 is used for filling the refrigerant into the system. It should be noted that the filling end 6 is made as an integral structure with the valve body 1, so that filling can be facilitated. It is also possible in the art to provide the filling end 6 not on the periphery of the valve body 1, but on other parts of the system. I.e. the filling end 6 is not an essential part constituting the shut-off valve.

As shown in fig. 4, the pipe connecting end 5 extends along the radial direction of the outer circumference of the valve body 1 and is connected with a first pipe connecting 7, and the lower end of the valve body 1 is fixedly connected with the valve seat 4, and the two can be fixedly connected by welding or the like.

The valve seat 4 is a cylindrical member composed of multiple steps, and has a first step 42 and a second step 43 on its outer circumferential surface for engaging with the valve body, and a third step 44 provided on the inner circumferential wall of the valve seat for engaging with the second connecting pipe 8, wherein the first step 42 has an outer diameter larger than that of the second step 43. As a further technical solution, a fourth step 45 is provided on the top outer edge of the valve seat 4, so as to accommodate the solder flowing in when the soldering operation is performed.

The lower end of the valve body 1 is provided with a fixing portion 13 and an engaging portion 12, wherein the fixing portion 13 engages with the second step portion 43 of the valve seat 4, and the engaging portion 12 is adapted to engage with the mounting plate 3. The mounting plate 3 has mounting holes 31 for fixed connection to the system. In order to fit the mounting plate 3 and the valve body 1 tightly, the outer peripheral wall of the fitting portion 12 is shaped to fit the fitting hole 32 of the mounting plate 3. In the present embodiment, the fitting hole 32 has an inner hexagonal shape, and accordingly, the outer peripheral wall of the fitting portion 12 has an outer hexagonal shape, so that the fitting and the fitting can be tightly fitted without loosening. Of course, the structure of the matching hole 32 is not limited to the internal hexagon, and those skilled in the art can make various changes to the shapes of the matching hole 32 and the peripheral wall of the matching portion 12, such as a matching special-shaped hole, a pentagon, etc., which are also within the protection scope of the present application.

The inner peripheral wall of the fitting portion 12 is fitted with the first stepped portion 42 of the valve seat 4, so that when assembled in the direction shown in fig. 4, the mounting plate 3 is positioned in the space formed between the valve seat 4 and the valve body 1, and the lower end surface of the mounting plate 3 abuts on the abutment surface 46 of the valve seat 4.

Specifically, the valve body 1 may be made of a brass material, and the mounting plate may be made of a stainless material, so as to reduce the production cost.

According to the stop valve provided by the embodiment, the valve body and the mounting plate can be separately processed, different materials can be adopted, the stamping difficulty of a blank is reduced, the processing of the mounting plate is simplified, the problems that the stamping is poor and the qualification rate is influenced easily in the integral stamping of the valve body blank in the prior art are solved, and the manufacturing cost is reduced. The installation plate adopts a stainless steel plate cold rolling mode, the stainless steel sheet metal process is quick and simple, the oil smoke generated by hot forging and the waste of brass fins are reduced, and the loss of the stop valve product and the manufacturing cost are lower.

Moreover, in the embodiment, the valve seat structure with multiple layers of step parts is matched with the valve body, the mounting plate can be positioned and fixed skillfully, and the step parts are arranged to facilitate penetration of solder in welding operation, so that the welding effect is improved.

It should be noted that the directional terms such as up, down, left and right, etc. described in the present application are all based on the drawings of the specification, and should not be construed as limiting the present application.

The stop valve provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A stop valve, including valve body (1) and with valve seat (4) that valve body (1) fixed set up, characterized in that, be formed with the container between valve body (1) and the valve seat (4), be provided with mounting panel (3) in the container, the lower terminal surface butt of mounting panel (3) is on the butt face (46) of valve seat (4), valve seat (4) have set up first step portion (42) and second step portion (43) and set up third step portion (44) on the inner peripheral wall in the periphery wall, first step portion (42) and second step portion (43) are used for taking over with valve body (1) cooperatees, third step portion (44) are used for taking over with second (8) and cooperateing, the lower tip of valve body (1) is provided with fixed part (13) and cooperation portion (12), wherein, fixed part (13) with the second step portion (43) of valve seat (4) cooperatees, the matching part (12) is used for matching with the mounting plate (3).

2. A stop valve according to claim 1, characterized in that the lower end of the valve body (1) is further provided with an engagement portion (12), said engagement portion (12) being positioned in engagement with the mounting plate (3).

3. A shut-off valve according to claim 2, characterised in that the mounting plate (3) has a fitting hole (32), the shape of the fitting hole (32) being adapted to the shape of the fitting part (12).

4. A shut-off valve according to claim 3, characterised in that the inner peripheral wall of the fitting portion (12) is fitted with the first step portion (42).

5. Stop valve according to claim 1, characterized in that the mounting plate (3) is made of stainless steel material.

6. A stop valve according to claim 1, wherein the first step (42) has an outer diameter which is larger than the outer diameter of the second step (43).

7. A shut-off valve according to claim 6, characterised in that the top outer edge of the valve seat (4) is further provided with a fourth step (45).