CN211501653U - Pneumatic valve filter - Google Patents

Abstract

The utility model provides a pneumatic valve filter, which belongs to the technical field of pneumatic valves. A pneumatic valve filter includes a filter barrel, a filter element and a cover; the utility model is provided with a filter barrel at the ventilation hole of the pneumatic valve, a filter element is arranged in the filter barrel, and the filter barrel is sealed by the cover Therefore, when the valve stem of the pneumatic valve is inhaled or exhausted through the vent hole during the movement, the air inhaled and discharged from the vent hole must pass through the filter element, thereby avoiding dust and other impurities in the air. The air hole enters the gap between the valve stem and the valve body, which causes the valve stem to jam and wear, which ensures the performance of the pneumatic valve and prolongs the service life of the pneumatic valve.

Description

A pneumatic valve filter

technical field

The utility model relates to the technical field of pneumatic valves, in particular to a pneumatic valve filter.

Background technique

In the field of pipeline connection, valves are generally set on the pipeline to realize the control of the pipeline connection. Therefore, the valve has become the key structure in the pipeline connection.

As a kind of control valve, pneumatic valve is widely used in the industry because of its simple structure and easy access to control source. At present, the pneumatic valves on the market are generally equipped with air inlet holes. The air source enters the valve body through the air inlet holes and pushes the valve stem to move, and the valve stem drives the valve disc to block the flow passage and realize the closing of the valve. In the case of the air source, the valve stem is reset under the action of the return spring, thereby realizing the opening of the valve. However, in order to ensure the performance of the existing pneumatic valve, it is necessary to place the valve stem at one end of the intake hole and to set a seal between the valve stem and the valve body. In order to ensure the smooth operation of the valve stem and prevent the valve stem from running during operation If there is jamming in the valve body, it is necessary to open a vent hole on the valve body to prevent the formation of a sealed space between the two ends of the valve stem and hinder the opening and closing of the valve. Although the above-mentioned valve realizes the anti-sealing setting, because the vent hole is connected to the outside atmosphere, it is easy to cause impurities such as dust in the outside atmosphere to be sucked into the space between the valve stem and the valve body when the valve stem moves during exhaust or inhalation. In the gap between them, the problem of jamming or wear occurs after long-term use, which affects the performance and service life of the pneumatic valve.

SUMMARY OF THE INVENTION

In view of the above problems existing in the prior art, it is now aimed at providing a pneumatic valve filter, so that a filter is connected to the ventilation hole of the pneumatic valve, so as to prevent impurities such as dust in the air from entering between the valve stem and the valve body In addition, the filter is provided with a quick-release structure, which facilitates the replacement of the filter element in the filter and facilitates the follow-up Maintenance and replacement improve the practicality of pneumatic valves.

The specific technical solutions are as follows:

A pneumatic valve filter, which is arranged on the ventilation hole of the valve body of the pneumatic valve, and is provided with a protruding connecting cylinder on the valve body and located at the ventilation hole, and has the characteristics of including: a filter barrel, a filter element and a sealing The cover, the barrel wall of the filter barrel body is provided with a number of air passage holes, the barrel bottom of the filter barrel body is provided with connecting holes, and the barrel bottom of the filter barrel body is provided with a connecting block and a pressing protrusion on the outside of the barrel and in the barrel respectively. The two ends of the connecting hole penetrate through the connecting block and the pressing boss respectively, the connecting block and the connecting cylinder are threadedly connected. A raised pressing boss is arranged on the cover and located on the side facing the filter barrel body, and the pressing boss and the pressing boss are respectively abutted against both ends of the filter element.

In the above-mentioned pneumatic valve filter, a layer of waterproof and breathable cloth is adhered inside the filter barrel and located on the barrel wall, and the waterproof and breathable cloth covers the air holes.

In the above-mentioned pneumatic valve filter, the filter element includes a center pipe and filter paper, a number of pipe holes are opened on the pipe wall of the center pipe, and the filter paper is wound around the center pipe.

In the above-mentioned pneumatic valve filter, both ends of the central pipe abut on the pressing boss and the pressing boss respectively, and the pipe hole of the central tube communicates with the connecting hole passing through the pressing boss.

The above-mentioned pneumatic valve filter, wherein the pressing boss and the top pressing boss are provided with sealing grooves on the side in contact with the central pipe, and each sealing groove is provided with a sealing gasket, and the central pipe is provided with a sealing gasket. The two ends are pressed against the two gaskets respectively.

The above-mentioned pneumatic valve filter, wherein the edge of the side where the cover is provided with the pressing boss is provided with at least two clips that can extend into the filter barrel. One side of the barrel wall is provided with a protruding elastic inverted buckle.

The above-mentioned pneumatic valve filter, wherein the elastic inversion buckle is arranged obliquely, and one end of the elastic inversion buckle is fixed on the end of the clip away from the cover, and the other end of the elastic inversion buckle is the end that is tilted up.

In the above-mentioned pneumatic valve filter, a pressing block is provided at the end of the end that is elastically buckled upside down and located at one end that is tilted up.

In the above-mentioned pneumatic valve filter, the barrel wall of the filter barrel is provided with a clamping hole corresponding to the elastic inversion.

In the above-mentioned pneumatic valve filter, the edge of the side where the cover is provided with the clip feet is provided with a clip edge, and the clip edge is inserted into the filter barrel when the cover is connected to the filter barrel.

The positive effects of the above technical solutions are:

The above-mentioned pneumatic valve filter is arranged on the ventilation hole of the pneumatic valve, which avoids the problem of blocking the movement of the valve stem due to the formation of a sealed space between the valve stem and the valve body of the pneumatic valve, and ensures the performance of the pneumatic valve. The valve filter can filter out dust and other impurities in the outside atmosphere, preventing dust and other impurities from being sucked into the gap between the valve stem and the valve body from the vent hole when the valve stem moves, causing jamming and wear problems. It can ensure the performance of the pneumatic valve and prolong the service life of the pneumatic valve; in addition, the filter barrel body and the cover are connected by a snap connection, which realizes the quick release arrangement of the filter, which facilitates the removal of the filter element in the filter. Maintenance and replacement to improve the availability of pneumatic valves.

Description of drawings

1 is a structural diagram of an embodiment of a pneumatic valve filter of the present invention;

2 is a cross-sectional view of a filter according to a preferred embodiment of the present invention;

3 is a cross-sectional view of a filter element according to a preferred embodiment of the present invention;

4 is a cross-sectional view of a cover according to a preferred embodiment of the present invention.

In the drawings: 1, pneumatic valve; 11, valve body; 111, vent hole; 112, connecting cylinder; 2, filter; 21, filter barrel; 22, filter element; 23, cover; 211, air hole; 212 , connecting hole; 213, connecting block; 214, pressing boss; 215, waterproof and breathable cloth; 216, sealing groove; 217, gasket; 218, card hole; 221, central pipe; 222, filter paper; 2211, pipe hole ; 231, the top-tight boss; 232, the card foot; 233, the card edge; 2321, the elastic buckle; 2322, the pressure block.

Detailed ways

In order to make the technical means, creation features, goals and effects realized by the present utility model easy to understand, the following embodiments will specifically describe the technical solutions provided by the present utility model in conjunction with the accompanying drawings 1 to 4, but the following contents are not regarded as the present utility model. New restrictions.

FIG. 1 is a structural diagram of an embodiment of a pneumatic valve filter of the present invention. As shown in FIG. 1 , the pneumatic valve filter provided in this embodiment is arranged on the vent hole 111 of the valve body 11 of the pneumatic valve 1 , so that when the valve stem of the pneumatic valve 1 is moving, there is no space between the valve stem and the valve body 11 . The gap can be communicated with the outside atmosphere through the vent hole 111, thereby preventing the blocking problem of the valve stem movement caused by the sealing space formed between the valve stem and the valve body 11, and also making the valve stem move through the vent hole 111. Inhalation and discharge All air can be filtered through the filter 2, which prevents the dust and other impurities in the atmosphere from entering the gap between the valve stem and the valve body 11 through the vent hole 111, causing jamming and wear after long-term use, ensuring that The use performance of the pneumatic valve 1 extends the service life of the pneumatic valve 1 . In addition, a protruding connecting cylinder 112 is provided on the valve body 11 and located at the vent hole 111 . The arrangement of the connecting cylinder 112 facilitates the installation of the filter 2 , and provides a structural basis for the installation of the rear filter 2 .

2 is a cross-sectional view of a filter according to a preferred embodiment of the present invention. As shown in FIGS. 1 and 2 , the filter 2 includes a filter barrel 21 , a filter element 22 and a cover 23 . The barrel wall of the filter barrel 21 is provided with a number of air holes 211 , so that the inside of the filter barrel 21 and the barrel The outside can be communicated through the air hole 211 , which provides a structural basis for the pneumatic valve 1 to inhale or exhaust air from the air hole 111 . In addition, the bottom of the filter barrel 21 is provided with a connection hole 212 , and the bottom of the filter barrel 21 is provided with a connection block 213 and a pressing boss 214 on the bottom of the filter barrel 21 and located outside the barrel and inside the barrel, respectively, and two of the connection holes 212 are provided. The ends respectively penetrate through the connecting block 213 and the pressing boss 214, and the connecting block 213 is threadedly connected with the connecting cylinder 112, so that when the filter barrel 21 is threadedly connected with the connecting block 213 and the connecting cylinder 112, the filter barrel 21 is realized in the pneumatic valve. The installation and fixation on the valve body 11 of 1 is convenient for disassembly and assembly, which is conducive to later maintenance and replacement. At the same time, the connection between the filter barrel 21 and the ventilation hole 111 on the valve body 11 is realized through the connecting hole 212 through the filter barrel 21. Suction and discharge provide the structural basis. At the same time, a cover 23 is provided on the barrel mouth of the filter barrel 21, and the cover 23 is connected with the filter barrel 21 in a snap connection, so that the barrel mouth of the filter barrel 21 is sealed, and the cover 23 is also realized. The quick disassembly and assembly of the filter barrel body 21 is also convenient for subsequent maintenance and replacement, and the structure design is more reasonable. A raised pressing boss 231 is provided on the cover 23 and located on the side facing the filter barrel 21, and the pressing boss 231 and the pressing boss 214 are respectively abutted against both ends of the filter element 22, so that they are located on the filter element 22. The filter element 22 in the barrel body 21 can be installed and fixed through the pressing boss 231 and the pressing boss 214 , which ensures the structural stability of the filter 2 and makes the structural design more reasonable.

Specifically, a layer of waterproof and breathable cloth 215 is adhered in the filter barrel 21 and located on the barrel wall, and the waterproof and breathable cloth 215 covers the air holes 211, so that the intrusion of water is prevented without hindering the air circulation, thereby preventing In the open air environment, liquids such as rainwater enter the filter barrel 21 through the air hole 211 and cause damage to the filter element 22 in the filter barrel 21, thereby prolonging the service life of the filter 2 and making the structure design more reasonable.

3 is a cross-sectional view of a filter element 22 according to a preferred embodiment of the present invention. As shown in FIG. 1 to FIG. 3 , the filter element 22 includes a central pipe 221 and filter paper 222 . A number of pipe holes 2211 are formed on the pipe wall of the central pipe 221 , and the filter paper 222 is wound around the central pipe 221 , so that the air needs to pass through the filter paper first. 222 is filtered, and then the filtered air enters into the center pipe 221 through the pipe hole 2211 on the center pipe 221, thereby avoiding impurities such as dust contained in the air inhaled through the ventilation hole 111, thereby realizing the protection of the pneumatic valve 1 , to ensure the performance and prolong the service life.

More specifically, both ends of the central tube 221 abut on the pressing boss 214 and the pressing boss 231, respectively, and the tube hole 2211 of the central tube 221 communicates with the connecting hole 212 passing through the pressing boss 214, so that The air that enters the central pipe 221 after being filtered by the filter paper 222 can enter the ventilation hole 111 through the connecting hole 212, that is, the connection between the ventilation hole 111 and the outside atmosphere is blocked by the filter paper 222, so that the air entering the ventilation hole 111 is blocked. Or the air discharged from the vent hole 111 needs to be filtered by the filter paper 222, so as to prevent the dust and other impurities in the air from entering the gap between the valve stem and the valve body 11 to cause jamming and wear problems, and the structure design is more reasonable.

More specifically, sealing grooves 216 are formed on the pressing boss 214 and the pressing boss 231 on the side in contact with the central tube 221 , and each sealing groove 216 is provided with a sealing gasket 217 , and the central tube 221 The two ends of the tube are respectively pressed on the two sealing gaskets 217, and the sealing between the central tube 221 and the pressing boss 214 and the top pressing boss 231 is realized through the sealing groove 216 and the sealing pad 217, which ensures the entry or discharge of the vent hole. The air of 111 must be filtered by the filter paper 222, which ensures the reliability of the use of the filter 2, and the structure design is more reasonable.

FIG. 4 is a cross-sectional view of the cover 23 according to a preferred embodiment of the present invention. As shown in FIG. 1 to FIG. 4 , at least two clamping feet 232 that can extend into the filter barrel 21 are provided at the edge of the side of the cover 23 where the pressing boss 231 is provided. Preferably, the clamping feet 232 are provided with There are three, and the three latching feet 232 are arranged in a triangle on the cover 23, which ensures the stability of the connection of the cover 23, and also ensures the uniformity of the force of the cover 23, making the connection more firm. In addition, a protruding elastic undercut 2321 is provided on the clamping foot 232 and is located on the side of the barrel close to the barrel wall of the filter barrel body 21, so that the elastic undercut 2321 facilitates the clamping of the clamping foot 232 on the barrel body and realizes the cover 23 is connected to the filter barrel body 21 by quick release, thereby facilitating the maintenance and replacement of the filter element 22 in the filter barrel body 21, and the structure design is more reasonable.

More specifically, the elastic undercut 2321 is inclined and one end of the elastic undercut 2321 is fixed on the end of the clip 232 away from the cover 23 , and the other end of the elastic undercut 2321 is tilted up, so that the elastic undercut 2321 is inclined. The raised end is the end close to the cover 23, so that the elastic inversion 2321 can restrict the cover 23 to the filter barrel 21, thereby preventing the cover 23 from being detached during the use of the filter 2, ensuring that structural stability.

More specifically, a pressing block 2322 is provided on the end of the elastic undercut 2321 and is located at one end that is tilted up, so that when the cover 23 needs to be opened, the operator only needs to push the elastic undercut 2321 through the pressing block 2322. , the operation is more convenient.

More specifically, the barrel wall of the filter barrel body 21 is provided with a clamping hole 218 corresponding to the elastic upside-down buckle 2321, so that when the cover 23 seals the barrel mouth of the filter barrel body 21, one end of the elastic upside-down buckle 2321 is tilted up. It can be snapped into the snap hole 218 , thereby realizing the snap connection between the cover 23 and the filter barrel 21 , and realizing the fixation of the cover 23 .

More specifically, the cover 23 is also provided with a clamping edge 233 on the edge of the side where the clamping feet 232 are provided, and the clamping edge 233 is located inside the clamping feet 232 , and the length of the clamping edge 233 is longer than the length of the clamping feet 232 . At the same time, the clip edge 233 is inserted into the filter barrel body 21 when the cover 23 is connected to the filter barrel body 21, and a sealing ring is provided on the end of the clip edge 233 that is longer than the clip foot 232, which can be used for the cover 23 in the The installation on the filter barrel 21 provides guidance, and at the same time, it can prevent the problem of water leakage caused by the arrangement of the clamping feet 232 and the clamping holes 218. Combined with the waterproof and breathable cloth 215, the waterproof performance of the filter 2 is improved, and the filter 2, the structure design is more reasonable.

The pneumatic valve filter provided in this embodiment includes a filter barrel 21 , a filter element 22 and a cover 23 ; a filter barrel 21 is provided at the ventilation hole 111 of the pneumatic valve 1 , and a filter element is arranged in the filter barrel 21 22, and seal the barrel mouth of the filter barrel 21 through the cover 23, so that when the valve stem of the pneumatic valve 1 inhales or exhausts through the vent hole 111 during the movement, the air sucked and discharged from the vent hole 111. The air needs to pass through the filter element 22, so as to avoid the problem that the dust and other impurities in the air enter the gap between the valve stem and the valve body 11 through the vent hole 111 and cause the valve stem to be blocked and worn, ensuring the pneumatic valve 1. The use performance prolongs the service life of the pneumatic valve 1.

The above are only the preferred embodiments of the present utility model, and are not intended to limit the embodiments and protection scope of the present utility model. Those skilled in the art should be able to realize that any changes made by using the contents of the description and illustrations of the present utility model The solutions obtained from equivalent replacements and obvious changes shall all be included in the protection scope of the present invention.

Claims (10)

1. A pneumatic valve filter, which is arranged on the ventilation hole of the valve body of the pneumatic valve, and is provided with a protruding connecting cylinder on the valve body and is located at the ventilation hole, and is characterized in that, comprising: a filter barrel A body, a filter element and a cover, the barrel wall of the filter barrel is provided with a number of air holes, the bottom of the filter barrel is provided with connecting holes, and the bottom of the filter barrel is located outside the barrel and outside the barrel. A connecting block and a pressing boss are respectively arranged in the barrel, and both ends of the connecting hole respectively penetrate the connecting block and the pressing boss, and the connecting block is threadedly connected with the connecting cylinder. The cover is provided on the barrel mouth of the filter barrel, and the cover and the filter barrel are connected in a snap connection, and a protrusion is provided on the cover and located on the side facing the filter barrel. the pressing boss, and the pressing boss and the pressing boss respectively abut against both ends of the filter element. 2 . The pneumatic valve filter according to claim 1 , wherein a layer of waterproof and breathable cloth is adhered inside the filter barrel and located on the barrel wall thereof, and the waterproof and breathable cloth covers the air holes. 3 . 3 . The pneumatic valve filter according to claim 1 , wherein the filter element comprises a central pipe and filter paper, a number of pipe holes are opened on the pipe wall of the central pipe, and the filter paper is wound around the outside the central tube. 4 . The pneumatic valve filter according to claim 3 , wherein the two ends of the central pipe abut against the pressing boss and the pressing boss respectively, and the The pipe hole communicates with the connecting hole penetrating through the pressing boss. 5 . The pneumatic valve filter according to claim 4 , wherein a sealing groove is provided on the pressing boss and the pressing boss and is located on the side in contact with the central pipe, and 5 . Each of the sealing grooves is provided with a sealing gasket, and the two ends of the central tube are respectively pressed against the two sealing gaskets. 6 . The pneumatic valve filter according to claim 1 , wherein, the edge of one side of the cover provided with the pressing boss is provided with at least two filters that can extend into the filter barrel. 7 . A clipping foot is provided with a protruding elastic undercut on the clipping foot and located on one side of the barrel wall close to the filter barrel body. 7 . The pneumatic valve filter according to claim 6 , wherein the elastic undercut is arranged obliquely, and one end of the elastic undercut is fixed on the end of the clip away from the cover, so the The other end of the elastic upside-down buckle is the end that is tilted up. 8 . The pneumatic valve filter according to claim 7 , wherein a pressing block is provided at the end of the elastic undercut and located at the end of the inclined and raised end. 9 . 9 . The pneumatic valve filter according to claim 7 or 8 , wherein the barrel wall of the filter barrel body is provided with a clamping hole corresponding to the elastic inversion. 10 . 10 . The pneumatic valve filter according to claim 6 , wherein the edge of the side of the cover on which the clips are arranged is provided with a clip edge, and the clip edge is located between the cover and the clip. 11 . The filter barrel is inserted into the filter barrel when connected.

Images