CN215635128U

CN215635128U - Pneumatic diaphragm valve convenient to installation is dismantled

Info

Publication number: CN215635128U
Application number: CN202122087110.4U
Authority: CN
Inventors: 谢辉
Original assignee: Dongguan Wocheng Technology Co ltd
Current assignee: Dongguan Wocheng Technology Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-01-25
Anticipated expiration: 2031-09-01

Abstract

A pneumatic diaphragm valve convenient to mount and dismount relates to the technical field of valves. It includes the valve body, the cylinder block, the cylinder head, first recess, the second recess, the cylinder air inlet, pneumatic assembly, the briquetting, the shell fragment, the upper end of valve body and the lower extreme threaded connection of cylinder block, the upper end and the cylinder head threaded connection of cylinder block, the lower extreme bottom surface of valve body is equipped with first recess, the up end surface of cylinder head is equipped with the second recess, the top center of cylinder head is equipped with the cylinder air inlet, pneumatic assembly's upper end embedding is in the cylinder block, the upper end of valve body is equipped with the briquetting, the bottom of briquetting is equipped with the shell fragment, pneumatic assembly's lower extreme runs through the bottom surface and the briquetting of cylinder block. The valve body, the cylinder body and the cylinder cover are more convenient and quicker to mount and dismount, are convenient to maintain and replace, and do not damage the valve body.

Description

Pneumatic diaphragm valve convenient to installation is dismantled

Technical Field

The utility model relates to the technical field of valves, in particular to an improvement of a pneumatic diaphragm valve convenient to mount and dismount.

Background

In many fields, pipeline transportation is the key point of production line design, and is one of the cores of industrial water treatment in the fields of biopharmaceutical industry, food industry, electric power industry, chemical industry, electroplating industry and the like, or semiconductor wafer production, wherein a diaphragm valve is an important part of pipeline transportation, a diaphragm valve is a special type of block valve, and a switching element of the diaphragm valve is a diaphragm made of soft materials, and the diaphragm separates an inner cavity of the valve body from an inner cavity of a valve cover and a driving part, so that parts above the diaphragm are not corroded by media.

However, the pneumatic diaphragm valve in the prior art is very inconvenient to install and disassemble, once damaged, the whole valve body is required to be detached frequently for maintenance and replacement, tools such as a wrench are required to be used for disassembly, the surfaces of the valve body are easy to damage due to the tools, the damaged valve body is easy to slip when being re-installed, moved and disassembled, the installation and the use are affected, and meanwhile, the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pneumatic diaphragm valve convenient to mount and dismount, aiming at overcoming the defects and shortcomings of the prior art, the mounting and dismounting among a valve body, a cylinder body and a cylinder cover of the pneumatic diaphragm valve are more convenient and quicker, the maintenance and the replacement are convenient, and the valve body is not damaged.

In order to achieve the purpose, the utility model adopts the following technical scheme: it includes valve body 1, cylinder block 2, cylinder head 3, first recess 4, second recess 5, cylinder air inlet 6, pneumatic component 7, briquetting 8, shell fragment 9, the upper end of valve body 1 and the lower extreme threaded connection of cylinder block 2, the upper end and the 3 threaded connection of cylinder head of cylinder block 2, the lower extreme bottom surface of valve body 1 is equipped with first recess 4, the upper end surface of cylinder head 3 is equipped with second recess 5, the top center of cylinder head 3 is equipped with cylinder air inlet 6, the upper end embedding of pneumatic component 7 is in cylinder block 2, the upper end of valve body 1 is equipped with briquetting 8, and the bottom of briquetting 8 is equipped with shell fragment 9, the lower extreme of pneumatic component 7 runs through the bottom surface and the briquetting 8 of cylinder block 2.

Furthermore, a first flow channel 10 is arranged at the left end inside the valve body 1, a second flow channel 11 is arranged at the right end inside the valve body 1, the first flow channel 10 and the second flow channel 11 are communicated with an opening at the upper end of the valve body 1, and a sealing ring 12 is arranged on the outer edge of the top end of the second flow channel 11.

Further, the pneumatic assembly 7 includes a piston 71, an air guide channel 72, a piston sealing element 73, a spring 74, and a push rod 75, the piston 71 is movably disposed inside the cylinder body 2, an air guide channel 72 is disposed in the piston 71 to communicate the top surface and the bottom surface of the piston 71, the piston sealing element 73 is embedded in the outer side of the lower end of the piston 71, the lower end of the spring 74 is connected to the upper surface of the piston 71, the top end of the spring 74 is connected to the bottom surface of the cylinder head 3, and one end of the piston 71 penetrating through the bottom surface of the cylinder body 2 is connected to the push rod 75.

Further, the first groove 4 and the second groove 5 may be in one of a regular quadrangle, a regular pentagon and a regular hexagon after being connected at the head.

Further, the elastic sheet 9 is a stainless steel elastic sheet. The stainless steel elastic sheet has strong corrosion resistance and more stable performance.

Further, a first air hole 13 is formed in the side wall of the upper end of one side of the cylinder body 2, and a second air hole 14 is formed in the side wall of the lower end of one side of the cylinder body 2. The first air hole 13 and the second air hole 14 are communicated with the external atmospheric pressure, so that positive pressure or negative pressure is prevented from being formed at the upper ends of the cylinder body 2 and the valve body 1 to influence the up-and-down movement of the piston 71 and the ejector rod 75.

The working principle of the utility model is as follows: when the first flow channel 10 and the second flow channel 11 need to be communicated, the air inlet 6 of the air cylinder is communicated with compressed air, the air enters the bottom surface of the piston 71 through the air guide channel 72, the piston 71 is pushed to move upwards and compress the spring 74, the ejector rod 75 is driven to move upwards, the elastic sheet 9 loses the force of jacking of the ejector rod 75, the elastic sheet 9 rebounds upwards, and the first flow channel 10 is communicated with the second flow channel 11; when the first flow channel 10 and the second flow channel 11 need to be blocked, the pressure is relieved by the air inlet 6 of the air cylinder, the spring 74 resets to push the piston 71 to move downwards, and further the ejector rod 75 is pushed, so that the ejector rod 75 extrudes the elastic sheet 9, the elastic sheet 9 deforms downwards to be in close contact with the sealing ring 12, and further the blocking between the first flow channel 10 and the second flow channel 11 is realized; valve body 1, cylinder body 2, threaded connection in proper order between the cylinder head 3, when needing to maintain and change, can dismantle corresponding position and change the maintenance, when carrying out the screw thread installation or dismantling the separation, can use the supplementary installation of hollow tube or dismantle, the cross sectional shape and the first recess 4 of hollow tube, the second recess 5 shape is the same, imbed first recess 4 with the hollow tube, second recess 5 can be through the hollow tube atress, with cylinder head 3 and cylinder body 2 separation, make valve body 1 and cylinder body 2 separation, the installation is convenient more quick with the separation, do not harm the surface of whole diaphragm valve again simultaneously.

After the technical scheme is adopted, the utility model has the beneficial effects that: through with threaded connection in proper order between valve body, cylinder body, the cylinder head to through set up the second recess at the cylinder head top surface, set up first recess in the bottom surface of valve body, make installation and dismantlement between valve body, the cylinder body and the cylinder head convenient to maintain and change, do not harm the valve body again simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic top view of the cylinder head 3 according to the present invention.

Description of reference numerals: the pneumatic valve comprises a valve body 1, a cylinder body 2, a cylinder cover 3, a first groove 4, a second groove 5, a cylinder air inlet 6, a pneumatic assembly 7, a piston 71, a bleed air channel 72, a piston sealing element 73, a spring 74, a push rod 75, a pressing block 8, an elastic sheet 9, a first flow channel 10, a second flow channel 11, a sealing ring 12, a first air hole 13 and a second air hole 14.

Detailed Description

Referring to fig. 1 to fig. 3, the technical solution adopted by the present embodiment is: it includes valve body 1, cylinder block 2, cylinder head 3, first recess 4, second recess 5, cylinder air inlet 6, pneumatic component 7, briquetting 8, shell fragment 9, the upper end of valve body 1 and the lower extreme threaded connection of cylinder block 2, the upper end and the 3 threaded connection of cylinder head of cylinder block 2, the lower extreme bottom surface of valve body 1 is equipped with first recess 4, the upper end surface of cylinder head 3 is equipped with second recess 5, the top center of cylinder head 3 is equipped with cylinder air inlet 6, the upper end embedding of pneumatic component 7 is in cylinder block 2, the upper end of valve body 1 is equipped with briquetting 8, and the bottom of briquetting 8 is equipped with shell fragment 9, the lower extreme of pneumatic component 7 runs through the bottom surface and the briquetting 8 of cylinder block 2.

Preferably, a first flow channel 10 is arranged at the left end inside the valve body 1, a second flow channel 11 is arranged at the right end inside the valve body 1, the first flow channel 10 and the second flow channel 11 are communicated with an opening at the upper end of the valve body 1, and a sealing ring 12 is installed on the outer edge of the top end of the second flow channel 11.

Preferably, the pneumatic assembly 7 includes a piston 71, an air guide channel 72, a piston sealing element 73, a spring 74, and a ram 75, the piston 71 is movably disposed inside the cylinder body 2, an air guide channel 72 is disposed inside the piston 71 to communicate the top surface and the bottom surface of the piston 71, the piston sealing element 73 is embedded in the outer side of the lower end of the piston 71, the lower end of the spring 74 is connected to the upper surface of the piston 71, the top end of the spring 74 is connected to the bottom surface of the cylinder head 3, and one end of the piston 71 penetrating through the bottom surface of the cylinder body 2 is connected to the ram 75.

Preferably, the first groove 4 and the second groove 5 may have one of a regular quadrangle, a regular pentagon and a regular hexagon after being connected at the head.

Preferably, the elastic sheet 9 is a stainless steel elastic sheet which has strong corrosion resistance and more stable performance.

Preferably, the lateral wall of one side upper end of the cylinder body 2 is provided with a first air hole 13, the lateral wall of one side lower end of the cylinder body 2 is provided with a second air hole 14, and the first air hole 13 and the second air hole 14 are communicated with the external atmospheric pressure, so that the upper ends of the cylinder body 2 and the valve body 1 are prevented from forming positive pressure or negative pressure to influence the up-and-down movement of the piston 71 and the mandril 75.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a pneumatic diaphragm valve convenient to installation is dismantled which characterized in that: it comprises a valve body (1), a cylinder body (2), a cylinder cover (3), a first groove (4), a second groove (5), a cylinder air inlet (6), a pneumatic component (7), a pressing block (8) and an elastic sheet (9), the upper end of the valve body (1) is in threaded connection with the lower end of the cylinder body (2), the upper end of the cylinder body (2) is in threaded connection with the cylinder cover (3), a first groove (4) is arranged on the bottom surface of the lower end of the valve body (1), a second groove (5) is arranged on the upper end surface of the cylinder cover (3), the center of the top end of the cylinder cover (3) is provided with a cylinder air inlet (6), the upper end of the pneumatic component (7) is embedded in the cylinder body (2), the upper end of the valve body (1) is provided with a pressing block (8), the bottom of the pressing block (8) is provided with an elastic sheet (9), the lower end of the pneumatic component (7) penetrates through the bottom surface of the cylinder body (2) of the air cylinder and the pressing block (8).

2. The pneumatic diaphragm valve of claim 1, wherein: the left end in valve body (1) inside is equipped with first runner (10), and the right-hand member in valve body (1) inside is equipped with second runner (11), and first runner (10), second runner (11) are linked together with the upper end opening of valve body (1), sealing washer (12) are installed to the top outside edge of second runner (11).

3. The pneumatic diaphragm valve of claim 1, wherein: pneumatic component (7) contain piston (71), bleed air way (72), piston sealing member (73), spring (74), ejector pin (75), piston (71) activity sets up inside cylinder body (2), be equipped with in piston (71) and draw air way (72) to communicate top surface and bottom surface of piston (71), piston sealing member (73) embedding is installed in piston (71) lower extreme outside, the lower extreme of spring (74) is connected with the upper surface of piston (71), and the top of spring (74) is connected with the bottom surface of cylinder head (3), the one end that piston (71) run through cylinder body (2) bottom surface is connected with ejector pin (75).

4. The pneumatic diaphragm valve of claim 1, wherein: the shape of the first groove (4) and the second groove (5) after head connection can be one of a regular quadrangle, a regular pentagon and a regular hexagon.

5. The pneumatic diaphragm valve of claim 1, wherein: the elastic sheet (9) is a stainless steel elastic sheet.

6. The pneumatic diaphragm valve of claim 1, wherein: the air cylinder is characterized in that a first air hole (13) is formed in the side wall of the upper end of one side of the air cylinder body (2), and a second air hole (14) is formed in the side wall of the lower end of one side of the air cylinder body (2).