CN219221429U

CN219221429U - Filter pressure reducing valve for air source of pneumatic actuator

Info

Publication number: CN219221429U
Application number: CN202222163937.3U
Authority: CN
Inventors: 朱振华
Original assignee: Wuxi Xinming Automatic Control Valve Co ltd
Current assignee: Wuxi Xinming Automatic Control Valve Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-06-20
Anticipated expiration: 2032-08-17

Abstract

The utility model discloses a filtering pressure reducing valve for an air source of a pneumatic actuator, which comprises a valve body and a valve cover arranged above the valve body, wherein an air inlet and a working port are formed in two sides of the valve body, a valve sleeve is movably arranged in the valve body, a valve rod is movably arranged in the valve sleeve, a pressure regulating assembly connected with the valve rod is arranged in the valve cover, an air passage is arranged in the valve sleeve, a valve core is connected below the valve rod, the valve core is separated from the valve sleeve to enable the working port and the air inlet to be communicated through the air passage, a base is connected below the valve core, a filter screen plate assembly is arranged on the base, the base is positioned in the valve sleeve, the periphery of the base is in dynamic sealing connection with the inner wall of the valve sleeve, and the air source of the air inlet is discharged from the working port after being filtered along the filter screen plate by the air passage under the valve rod. Through the mode, the filtering pressure reducing valve for the air source of the pneumatic actuator is suitable for reducing pressure and filtering the air source of the pneumatic actuator, and the filtering effect is realized while reducing pressure by optimizing the valve rod structure and integrating the filtering component, so that the filtering pressure reducing valve is simple in structure, convenient to install and reliable to use.

Description

Filter pressure reducing valve for air source of pneumatic actuator

Technical Field

The utility model relates to the field of pressure reducing valves, in particular to a filtering pressure reducing valve for an air source of a pneumatic actuator.

Background

The pressure reducing valve is an important component for reducing the pressure of the air source by inputting the air source into the pneumatic actuator. In general, when the pressure reducing valve is used, a filter is additionally arranged, so that the installation cost is increased, the structure of the valve body is increased, and the pressure reducing valve is directly used without any filtering protection facility, so that the pressure reducing valve is often easy to cause that the pressure reducing valve cannot be reduced or the pressure reducing effect is not obvious in the use process, and the product performance is greatly influenced.

Some existing filter pressure relief valves mount the filter cartridge below the valve housing. Because the influence of filter vat structure and setting position, the filtration pore utilization ratio on the filter vat is not high, often can appear that part filtration pore has blockked up, and some filtration pore still be very unblocked, can not make full use of cartridge filter, has caused extravagant, and single cartridge filter effect is also limited.

Disclosure of Invention

The utility model mainly solves the technical problem of providing the filtering pressure reducing valve for the air source of the pneumatic actuator, which is suitable for reducing the pressure of the air source of the pneumatic actuator, realizes the filtering effect while reducing the pressure by optimizing the valve rod structure and integrating the filtering component, and has the advantages of simple structure, convenient installation and reliable use.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a filter relief pressure valve for pneumatic actuator's air supply, include the valve body and install the valve gap in the valve body top, air inlet and working opening have been seted up to the valve body both sides, the valve body internalization is provided with the valve pocket, the valve intracavity activity is provided with the valve rod, be equipped with the pressure regulating subassembly of being connected with the valve rod in the valve gap, have the gas circuit in the valve pocket, the below of valve rod is connected with the case, the case separates with the valve pocket and makes working opening and air inlet pass through the gas circuit intercommunication, the case below is connected with the base, install the filter screen plate subassembly on the base, the base is located the valve pocket and the periphery of base and the inner wall dynamic seal connection of valve pocket, the air supply that the valve rod made the air inlet down discharges from the working opening after filtering along the filter screen plate through the gas circuit.

In a preferred embodiment of the utility model, the screen assembly comprises a first screen and a second screen, the first screen being arranged at the upper end of the base and the second screen being arranged at the lower end of the base.

In a preferred embodiment of the present utility model, the filter holes of the first filter screen plate are larger than the filter holes of the second filter screen plate, and the filter holes of the first filter screen plate and the filter holes of the second filter screen plate are staggered in vertical space.

In a preferred embodiment of the utility model, the lower end of the valve sleeve is provided with a mounting cavity, the mounting cavity is positioned below the working gas path, a plurality of first sealing rings are sleeved on the periphery of the base, and the sealing rings are in sealing contact with the inner wall of the mounting cavity.

In a preferred embodiment of the present utility model, the valve core is an umbrella valve core, and the umbrella valve core contacts with or separates from the lower end opening of the air path to disconnect or connect the air inlet and the air outlet.

In a preferred embodiment of the utility model, a groove body is arranged in the middle of the valve core, a second sealing ring is sleeved on the groove body, and the sealing ring is jointed with the valve sleeve to seal the valve core and the valve sleeve.

In a preferred embodiment of the utility model, the upper end of the valve core is connected with the valve rod through threads, and the lower part of the valve core is connected with the valve body through a spring.

In a preferred embodiment of the present utility model, the pressure assembly includes a pressure regulating handle, the lower end of the pressure regulating handle is connected with the diaphragm through a spring, the valve sleeve is provided with a reaction air hole, and the reaction air hole is communicated with the air inlet.

The beneficial effects of the utility model are as follows: the utility model relates to a filtering pressure reducing valve for an air source of a pneumatic actuator, which is characterized in that a valve core, a valve rod and a filtering assembly are assembled in a modularized manner, and the air source is subjected to pressure reducing and filtering, and finally the air suitable for the pneumatic actuator is output, so that the filtering assembly is convenient to assemble and disassemble and has a simple structure.

The filtering pressure reducing valve for the air source of the pneumatic actuator is characterized in that the filtering component is opposite to the air outlet end of the valve sleeve, the air is perpendicular to the filtering component, the filtering component is utilized to filter the air to the maximum extent, the filtering effect is improved, and the filtering component is sealed with the valve sleeve to prevent the unfiltered air from leaking.

According to the filtering pressure reducing valve for the air source of the pneumatic actuator, the filtering assembly is used for filtering through the first filtering screen plate and the second filtering screen plate which are arranged separately, the mesh holes of the first filtering screen plate are large and coarse filtering, the mesh holes of the second filtering screen plate are small and fine filtering, and the two filtering screen plates are arranged in a staggered mode, so that the filtering effect is further improved, and the auxiliary pressure reducing effect can be provided.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic view of a preferred embodiment of a filter pressure reducing valve for a pneumatic actuator air supply of the present utility model;

FIG. 2 is a partial schematic view of the structure of FIG. 1;

FIG. 3 is a schematic view of the structure of a first screen panel;

the components in the drawings are marked as follows: 1. valve body, 2, valve gap, 11, air inlet, 12, working opening, 3, valve pocket, 31, gas circuit, 32, installation cavity, 4, valve rod, 5, pressure regulating subassembly, 6, case, 61, second sealing washer, 62, spring, 7, base, 71, first sealing washer, 8, filter screen subassembly, 81, first filter screen, 811, filtration pore, 82, second filter screen, 9, diaphragm.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below. The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the utility model, without affecting the effect or achievement of the objective. Also, the terms "upper", "lower", "left", "right", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the utility model for modification or adjustment of the relative relationships thereof, as they are also considered within the scope of the utility model without substantial modification to the technical context.

Referring to fig. 1 to 2, a filtering and pressure reducing valve for an air source of a pneumatic actuator comprises a valve body 1 and a valve cover 2 arranged above the valve body 1, wherein an air inlet 11 and a working port 12 are formed in two sides of the valve body 1, a valve sleeve 3 is movably arranged in the valve body 1, a valve rod 4 is movably arranged in the valve sleeve 3, and a pressure regulating assembly 5 connected with the valve rod 4 is arranged in the valve cover 2. The valve housing 3 has an air passage 31 therein. A valve core 6 is connected below the valve rod 4, and the valve core 6 is separated from the valve sleeve 3 so that the working port 12 and the air inlet 11 are communicated through an air passage 31. The pressure regulating assembly 5 comprises a pressure regulating handle, the lower end of the pressure regulating handle is connected with the diaphragm 9 through a spring 62, the valve sleeve 3 is provided with a reaction air hole, and the reaction air hole is communicated with the air inlet 11. The pressure regulating assembly 5 comprises a pressure regulating bolt arranged in the valve cover 2, the lower end of the pressure regulating bolt is connected with a pressure regulating nut, the pressure regulating nut is connected with a pressure regulating spring, the lower end of the pressure regulating spring is connected to a connecting seat of the diaphragm 9, the upper end of the pressure regulating bolt is connected with a pressure regulating handle, and the pressure regulating handle rotates the pressure regulating bolt to drive the pressure regulating nut to move downwards, so that the pressure regulating spring presses the diaphragm 9 downwards. The two ends of the diaphragm 9 are connected between the valve sleeve 3 and the valve cover 2 in a sealing way, the middle of the diaphragm 9 is arranged on a connecting seat, the structures of the pressure regulating assembly 5 and the diaphragm 9 and the principle of opening and closing the valve are similar to those of the existing pressure reducing valve, and the description is omitted here.

A base 7 is connected below the valve core 6, and a filter screen plate assembly 8 is arranged on the base 7. The upper end of the valve core 6 is connected with the valve rod 4 through threads, and the lower part of the valve core 6 is connected with the valve body 1 through a spring 62. The valve core 6, the valve rod 4 and the base 7 are connected through a threaded structure, so that the valve is convenient to assemble and disassemble, simple in structure, stable in connection and long in service life.

The valve core 6 is an umbrella valve core, and the umbrella valve core is contacted with or separated from the lower end opening of the air channel 31 to disconnect or communicate the air inlet 11 and the air outlet. The middle part of the valve core 6 is provided with a groove body, a second sealing ring 61 is sleeved on the groove body, and the sealing ring is attached to the valve sleeve 3 to seal between the valve core 6 and the valve sleeve 3. The valve core 6 descends to be separated from the valve sleeve 3, and gas in the gas inlet 11 passes through the gas circuit 31 and then passes through the filter screen plate assembly 8 and is discharged from the working port 12. The valve core 6 and the valve sleeve 3 are sealed through a conical surface sealing structure, so that the sealing effect is effectively improved, and leakage between the valve sleeve 3 and the valve core 6 is prevented. The second sealing ring 61 seals between the outer side of the valve core 6 and the valve sleeve 3, and further improves the sealing effect.

The base 7 is positioned in the valve sleeve 3, the periphery of the base 7 is in dynamic sealing connection with the inner wall of the valve sleeve 3, and the valve rod 4 descends to enable the air source of the air inlet 11 to be discharged from the working port 12 after being filtered along the filter screen plate through the air passage 31. The inner ring of the base 7 is connected to the valve core 6 through threads. The lower extreme of valve pocket 3 has installation cavity 32, and installation cavity 32 is located the below of gas circuit 31, and the periphery cover of base 7 is equipped with multichannel first sealing washer 71, sealing washer and the inner wall sealing contact of installation cavity 32. The valve pocket 3 is wholly set up in the installation cavity 32 to the periphery of valve pocket 3 realizes moving seal through the inner wall of first sealing washer 71 and valve pocket 3, and when case 6 was opened, gas only can get into the gas vent through the filter screen subassembly 8 on the base 7, ensures to carry out abundant filtration to the air supply, is threaded connection again between base 7 and the case 6, can guarantee the gas tightness, and the gas that leaks between base 7 and case 6 and between base 7 and the valve pocket 3 is negligible, and the gas is almost completely filtered through filter screen subassembly 8, effectively guarantees the air supply that gets into the executor.

The screen assembly 8 comprises a first screen 81 and a second screen 82, the first screen 81 being arranged at the upper end of the base 7 and the second screen 82 being arranged at the lower end of the base 7. The filter holes of the first filter screen plate 81 are larger than the filter holes of the second filter screen plate 82, and the filter holes 811 of the first filter screen plate 81 and the filter holes of the second filter screen plate 82 are staggered in vertical space. The first filter screen plate 81 and the second filter screen plate 82 can be connected to the base 7 through bolts or structures which are easy to disassemble and assemble, such as buckles (not shown in the concrete connection structure diagram), the heights of the first filter screen plate 81 and the second filter screen plate 82 can be adjusted according to the filtering requirements, and the filter screen plate is suitable for an existing filter screen to realize the filtering function. Since the gas from the valve housing 3 flows downwards, and the screen surfaces of the first screen plate 81 and the second screen are just perpendicular to the flow direction of the gas source, the gas source can be fully filtered through the first screen plate 81 and the second screen. For the current cylinder filter that sets up perpendicularly, the area of contact of first filter screen plate 81 and second filter screen and air supply can be improved to the structure of this application, fully realizes the filter effect. Meanwhile, the filter holes of the first filter screen plate 81 and the filter holes of the second filter screen plate 82 are staggered in vertical space, so that the flow path of the air source is prolonged, the pressure of the air source can be slightly reduced, and the air source filtering effect is also improved.

Compared with the prior art, the filtering pressure reducing valve for the air source of the pneumatic actuator is suitable for reducing pressure and filtering the air source of the pneumatic actuator, realizes the filtering effect while reducing pressure by optimizing the valve rod structure and integrating the filtering component, and has the advantages of simple structure, convenient installation and reliable use.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims

1. The utility model provides a filter reducing valve for pneumatic actuator's air supply, includes the valve body and installs the valve gap in the valve body top, air inlet and working opening have been seted up to the valve body both sides, the valve body internalization is provided with the valve pocket, the valve pocket internalization is provided with the valve rod, be equipped with the pressure regulating subassembly of being connected with the valve rod in the valve gap, its characterized in that has the gas circuit in the valve pocket, the below of valve rod is connected with the case, case and valve pocket separation make working opening and air inlet pass through the gas circuit intercommunication, the case below is connected with the base, install the filter screen subassembly on the base, the base is located the valve pocket and the periphery of base and the inner wall dynamic seal connection of valve pocket, the valve rod is the air supply of air inlet down through the gas circuit along the filter screen after filtering from the working opening.

2. The filter and relief valve for a gas source of a pneumatic actuator of claim 1, wherein the filter screen assembly comprises a first filter screen disposed at an upper end of the base and a second filter screen disposed at a lower end of the base.

3. The filter and pressure relief valve for a gas source of a pneumatic actuator of claim 2, wherein the filter apertures of the first filter screen are larger than the filter apertures of the second filter screen, the filter apertures of the first filter screen being staggered in vertical space from the filter apertures of the second filter screen.

4. A filter and pressure reducing valve for a gas source of a pneumatic actuator as set forth in claim 3 wherein the lower end of the valve housing has a mounting cavity located below the working gas path, the outer periphery of the base being provided with a plurality of first sealing rings in sealing contact with the inner wall of the mounting cavity.

5. The filter and pressure reducing valve for a gas source of a pneumatic actuator of claim 1, wherein the valve element is an umbrella valve element, and wherein the umbrella valve element is in contact with or separated from a lower opening of the gas path to disconnect or connect the gas inlet and the gas outlet.

6. The filter and pressure reducing valve for a gas source of a pneumatic actuator of claim 2, wherein the middle portion of the valve core is provided with a groove body, the groove body is sleeved with a second sealing ring, and the sealing ring is attached to the valve sleeve to seal between the valve core and the valve sleeve.

7. A filter and pressure reducing valve for a gas source of a pneumatic actuator as set forth in claim 3 wherein the upper end of said valve element is threadably connected to the valve stem and the lower end of said valve element is connected to the valve body by a spring.

8. The filter and pressure reducing valve for a gas source of a pneumatic actuator of any one of claims 1-7, wherein the pressure assembly comprises a pressure regulating handle, the lower end of the pressure regulating handle is connected to the diaphragm by a spring, the valve housing is provided with a reaction gas vent, and the reaction gas vent is in communication with the gas inlet.