CN213809060U - Plug-in mounting type pressure reducing valve - Google Patents
Plug-in mounting type pressure reducing valve Download PDFInfo
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- CN213809060U CN213809060U CN202022654152.7U CN202022654152U CN213809060U CN 213809060 U CN213809060 U CN 213809060U CN 202022654152 U CN202022654152 U CN 202022654152U CN 213809060 U CN213809060 U CN 213809060U
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Abstract
The utility model relates to a cartridge type pressure reducing valve, which comprises an adjusting valve sleeve, a main valve sleeve, an adjusting device arranged in the adjusting valve sleeve and a valve body device arranged in the main valve sleeve; the main valve sleeve is provided with an air inlet and an air outlet; the adjusting valve sleeve and the main valve sleeve are tightly connected, the main valve sleeve is provided with a pressure feedback cavity at one side close to the adjusting valve sleeve, and the adjusting device is pressed on the valve body device through the pressure feedback cavity; the adjusting device is provided with a guide membrane, and the guide membrane is used for sealing one side of the adjusting device, which is in contact with the valve body device; simple structure, the appearance is small, and the installation of being convenient for adopts diaphragm type feedback chamber, and the powder pollution and the lubricating grease pollution that significantly reduce.
Description
Technical Field
The utility model relates to a pneumatic control valve field specifically is a cartridge formula relief pressure valve.
Background
The general relief pressure valve adopts the screwed joint, and the body adopts the piston feedback mechanism to adopt the metal valve body mostly. The problems of inconvenient integrated assembly and replacement due to the existence of metal powder and lubrication during use are solved. In some occasions with high requirements on solid particle pollution and occasions with high assembly integration level, the use effect of the conventional pressure reducing valve is poor.
SUMMERY OF THE UTILITY MODEL
Threaded joint to relief pressure valve among the prior art adopts metal valve body, exists metal powder and need lubricate in the use, the problem of integrated assembly and change not convenient for, the utility model provides a cartridge formula relief pressure valve, simple structure, the appearance is small, and the installation of being convenient for adopts diaphragm type feedback chamber, and the powder pollution that significantly reduces pollutes and lubricating grease.
The utility model discloses a realize through following technical scheme:
a cartridge type pressure reducing valve comprises an adjusting valve sleeve, a main valve sleeve, an adjusting device arranged in the adjusting valve sleeve and a valve body device arranged in the main valve sleeve, wherein an air inlet hole and an air outlet hole are formed in the main valve sleeve; the adjusting valve sleeve and the main valve sleeve are tightly connected, the main valve sleeve is provided with a pressure feedback cavity at one side close to the adjusting valve sleeve, and the adjusting device is pressed on the valve body device through the pressure feedback cavity; the adjusting device is provided with a guide diaphragm, and the guide diaphragm is used for sealing one side of the adjusting device, which is in contact with the valve body device;
the valve body device comprises a pressure plate, a valve core seat and a valve core, wherein the pressure plate is arranged in the main valve sleeve and close to the pressure feedback cavity, the valve core seat is arranged in the main valve sleeve and far away from the pressure feedback cavity, and the valve core seat is arranged corresponding to the air inlet; the pressure plate is connected with the valve core seat, one end of the valve core is arranged on the pressure plate and is in contact with the adjusting device through the pressure plate; the other end of the valve core is provided with a sealing pair, and the sealing pair is arranged on a core shaft of the valve core through the valve core seat and faces the air inlet; the valve core reciprocates between the pressure plate and the valve core seat through high-pressure air entering the air inlet; a sealing diaphragm is arranged on the mandrel of the valve core in the direction towards the pressure plate and is used for sealing high-pressure air flowing from the air inlet to the air outlet; and a feedback groove is arranged on the port of the air outlet hole along the side wall of the main valve sleeve and communicated with the pressure feedback cavity.
Preferably, the adjusting device comprises an adjusting screw, an adjusting nut, a centering plate, a pressure spring, a guide seat nut and a guide seat;
the adjusting nut is arranged at the top of the adjusting valve sleeve, the adjusting screw is inserted into the adjusting valve sleeve through being in threaded connection with the adjusting nut, and the centering plate is connected with one end, inserted into the adjusting valve sleeve, of the adjusting screw; one end of the pressure spring is fixed on the centering plate, the other end of the pressure spring is fixedly arranged on the guide seat, and the guide seat nut is arranged on the guide seat and connected with a connecting rod of the pressure spring; a guide diaphragm is arranged between the guide nut and the guide seat; the guide diaphragm is arranged along one side of the guide seat, which is contacted with the pressure plate, in a sealing way.
Further, the guide seat nut is arranged in contact with the valve core.
Preferably, the distance from the sealing diaphragm to the air inlet hole on the valve core is greater than the distance from the position of the valve core corresponding to the air outlet hole to the air inlet hole.
Preferably, a first sealing ring is arranged on the outer wall of the main valve sleeve at the joint of the feedback groove and the pressure feedback cavity and used for isolating high-pressure air in the pressure feedback cavity from outside air.
Preferably, a second sealing ring is arranged between the air inlet hole and the air outlet hole on the outer wall of the main valve sleeve and used for isolating high-pressure air in the air inlet hole and the air outlet hole.
Preferably, a sealing gasket is arranged on one side of the valve core seat facing the air inlet hole, and the sealing gasket is arranged in contact with the sealing pair.
Preferably, a return spring is sleeved at one end, facing the air inlet, of the sealing pair of the valve core; the return spring is arranged on the sealing pair and is abutted against the inner side of the air inlet hole.
Preferably, the adjusting valve sleeve and the main valve sleeve are connected through screw threads.
Preferably, one end of the air inlet hole of the main valve sleeve is fixedly inserted into the pressure reducing valve seat.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model provides a cartridge type pressure reducing valve, which effectively provides a pressure range for an adjusting device by arranging a pressure feedback cavity at one side of the main valve sleeve contacted with an adjusting valve sleeve, wherein the adjusting device is provided with a guide diaphragm which seals one side of the adjusting device contacted with the valve body device, thereby avoiding the poor use effect of the pressure reducing valve caused by the metal powder flowing into the adjusting device in the use process; be equipped with sealed diaphragm on the direction of the dabber of case towards the clamp plate in the valve body device for the high-pressure air of sealed through inlet port to venthole flow direction, the powder pollution has been reduced, lateral wall along the main valve cover is equipped with the feedback groove on the port of venthole, feedback groove intercommunication pressure feedback chamber sets up, effectual high-pressure air that will follow the venthole, the part flows to the pressure feedback intracavity through the feedback groove, for providing atmospheric pressure environment in the pressure feedback intracavity, promote adjusting device motion, avoid the lubricating oil lubrication, lubricating grease pollution has been reduced.
Furthermore, an adjusting nut in the adjusting device is arranged at the top of the adjusting valve sleeve, and an adjusting screw is inserted into the adjusting valve sleeve through being in threaded connection with the adjusting nut, so that the adjusting valve sleeve can be conveniently adjusted; the centering plate is connected with one end of the adjusting screw inserted into the adjusting valve sleeve; one end of the pressure spring is fixed on the centering plate, the other end of the pressure spring is fixedly arranged on the guide seat, and the guide seat nut is arranged on the guide seat and connected with a connecting rod of the pressure spring; a guide diaphragm is arranged between the guide nut and the guide seat; effectual providing fixes the direction diaphragm between guide nut and guide holder, and the sealed setting in one side of direction diaphragm along guide holder and clamp plate contact avoids in the use, and metal powder flows to adjusting device in, the not good of relief pressure valve result of use that causes.
Furthermore, the guide seat nut is arranged in contact with the valve core, so that the pushing force of high-pressure air in the main valve sleeve to the valve core is effectively transmitted to the adjusting valve sleeve, and the adjustment is facilitated.
Furthermore, the distance from the sealing diaphragm to the air inlet hole on the valve core is greater than the distance from the sealing diaphragm to the air inlet hole on the position of the valve core corresponding to the air outlet hole, so that the phenomenon that high-pressure air flows into the regulating valve body along the air outlet hole through the air inlet hole in the flowing process is avoided, and the pollution of metal powder is reduced.
Furthermore, a first sealing ring is arranged at the joint of the feedback groove and the pressure feedback cavity on the outer wall of the main valve sleeve and used for isolating high-pressure air and outside air in the pressure feedback cavity, so that the outside air is prevented from flowing into the pressure feedback cavity, and the cleanliness of the gas is ensured.
Furthermore, a second sealing ring is arranged between the air inlet and the air outlet on the outer wall of the main valve sleeve and used for isolating high-pressure air in the air inlet and the air outlet, so that after the main valve sleeve is inserted into the pressure reducing valve seat, the high-pressure air is intensively introduced into the air inlet, and the pressure of the high-pressure air to the air inlet is increased.
Furthermore, a sealing gasket is arranged on one side, facing the air inlet hole, of the valve core seat, and the sealing gasket is arranged in contact with the sealing pair, so that the control force of the main valve sleeve is effectively improved, and the pressure reduction effect is guaranteed.
Furthermore, a return spring is sleeved at one end of the valve core, which faces the air inlet, of the sealing pair; the return spring is arranged on the sealing pair and is abutted against the inner side of the air inlet hole, so that the sealing pair is contacted with the sealing gasket through the return of the return spring.
Furthermore, the adjusting valve sleeve and the main valve sleeve are connected through the screw threads, so that the connectivity between the adjusting valve sleeve and the main valve sleeve is improved.
Furthermore, one end of the air inlet hole of the main valve sleeve is fixedly inserted into the pressure reducing valve seat, so that the stability of the pressure reducing valve in the using process is ensured.
Drawings
FIG. 1 is a perspective view of the cartridge type pressure reducing valve of the present invention;
FIG. 2 is a front view of the cartridge type pressure reducing valve of the present invention;
FIG. 3 is a top view of the cartridge type pressure reducing valve of the present invention;
FIG. 4 is a bottom view of the cartridge type pressure reducing valve of the present invention;
FIG. 5 is a side view of the cartridge type pressure reducing valve of the present invention;
fig. 6 is a cross-sectional view a-a of fig. 5.
In the figure: 1-adjusting the screw; 2-adjusting the nut; 3-adjusting the valve sleeve; 4-centering plate; 5-a pressure spring; 6-a guide seat nut; 7-a guide seat; 8-a guide membrane; 9-pressing a plate; 10-sealing the membrane; 11-a first sealing ring; 12-a substrate; 13-valve core seat; 14-a valve core; 15-a second sealing ring; 16-a seal gasket; 17-a return spring; 18-a feedback slot; 19-main valve sleeve; 20-an air intake; and 21-air outlet holes.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.
The utility model provides a cartridge type pressure reducing valve, as shown in figure 1, figure 2, figure 3, figure 4 and figure 5, comprising an adjusting valve sleeve 3, a main valve sleeve 19, an adjusting device arranged in the adjusting valve sleeve 3 and a valve body device arranged in the main valve sleeve 19;
referring to fig. 6, the main valve housing 19 is provided with an inlet hole 20 and an outlet hole 21; the adjusting valve sleeve 3 and the main valve sleeve 19 are tightly connected, a pressure feedback cavity is arranged on one side of the main valve sleeve 19 close to the adjusting valve sleeve 3, and the adjusting device is pressed on the valve body device through the pressure feedback cavity; the adjusting device is provided with a guide diaphragm 8, and the side of the adjusting device, which is contacted with the valve body device, is hermetically arranged by the guide diaphragm 8;
the valve body device comprises a pressure plate 9, a valve core seat 13 and a valve core 14, wherein the pressure plate 9 is arranged in a main valve sleeve 19 close to a pressure feedback cavity, the valve core seat 13 is arranged in the main valve sleeve 19 far away from the pressure feedback cavity, and the valve core seat 13 is arranged corresponding to an air inlet 20; the pressure plate 9 is connected with the valve core seat 13, one end of the valve core 14 is arranged on the pressure plate 9 and is in contact with the adjusting device through the pressure plate 9; the other end of the valve core 14 is provided with a sealing pair, and the sealing pair is arranged on a mandrel of the valve core 14 through the valve core seat 13 towards the air inlet hole 20; the valve core 14 reciprocates between the pressure plate 9 and the valve core seat 13 through high-pressure air entering the air inlet hole 20; a sealing diaphragm 10 is arranged on the mandrel of the valve core 14 in the direction towards the pressure plate 9 and is used for sealing high-pressure air flowing from the air inlet hole 20 to the air outlet hole 21; a feedback groove 18 is formed in the base body 12 along the side wall of the main valve sleeve 19 on the port of the air outlet hole 21, and the feedback groove 18 is communicated with the pressure feedback cavity.
The adjusting device comprises an adjusting screw 1, an adjusting nut 2, a centering plate 4, a pressure spring 5, a guide seat nut 6 and a guide seat 7; the adjusting nut 2 is arranged at the top of the adjusting valve sleeve 3, the adjusting screw 1 is inserted into the adjusting valve sleeve 3 through being in threaded connection with the adjusting nut 2, and the centering plate 4 is connected with one end of the adjusting screw 1 inserted into the adjusting valve sleeve 3; one end of a pressure spring 5 is fixed on the centering plate 4, the other end is fixedly arranged on a guide seat 7, and a guide seat nut 6 is arranged on the guide seat 7 and connected with a connecting rod of the pressure spring 5; a guide diaphragm 8 is arranged between the guide nut 6 and the guide seat 7; the guide membrane 8 is arranged along one side of the guide seat 7, which is contacted with the pressure plate 9 in a sealing way; the guide seat nut 6 is arranged in contact with the valve core 14; the problem that the use effect of the pressure reducing valve is poor due to the fact that metal powder flows into the adjusting device in the use process is avoided.
The distance from the sealing diaphragm 10 to the air inlet hole 20 on the valve core 14 is greater than the distance from the position of the valve core 14 corresponding to the air outlet hole 21 to the air inlet hole 20, so that the high-pressure air is prevented from flowing into the regulating valve body in the process of flowing out along the air outlet hole 21 through the air inlet hole 20, and the pollution of metal powder is reduced;
a first sealing ring 11 is arranged on the outer wall of the main valve sleeve 19 at the joint of the feedback groove 18 and the pressure feedback cavity and is used for isolating high-pressure air in the pressure feedback cavity from outside air, so that the outside air is prevented from flowing into the pressure feedback cavity, and the cleanliness of the gas is ensured; a second sealing ring 15 is arranged between the air inlet hole 20 and the air outlet hole 21 on the outer wall of the main valve sleeve 19 and is used for isolating high-pressure air in the air inlet hole 20 and the air outlet hole 21, so that after the main valve sleeve 19 is inserted into the pressure reducing valve seat, the high-pressure air is intensively introduced into the air inlet hole 20, and the pressure of the high-pressure air to the air inlet hole 20 is increased; a sealing gasket 16 is arranged on one side of the valve core seat 13 facing the air inlet hole 20, and the sealing gasket 16 is arranged in contact with the sealing pair. A return spring 17 is sleeved at one end of the sealing pair of the valve core 14, which faces the air inlet 20; the return spring 17 is arranged on the sealing pair against the inner side of the air inlet hole 20.
The adjusting valve sleeve 3 and the main valve sleeve 19 are in threaded connection through screws, and therefore the connectivity between the adjusting valve sleeve 3 and the main valve sleeve 19 is improved. One end of the air inlet hole 20 of the main valve sleeve 19 is fixedly inserted into the pressure reducing valve seat.
The utility model provides a cartridge type pressure reducing valve which comprises a valve body,
the adjusting screw 1 is twisted to compress the pressure spring 5 to a certain amount, the force of the pressure spring 5 is far greater than the force of the return spring 17, and the valve core 14 is separated from the sealing gasket 16; when compressed air is introduced into the air inlet hole 20, the compressed air passes through the sealing pair, and part of air in the air outlet hole 21 enters the pressure feedback cavity along the feedback groove 18, so that the pressure in the pressure feedback cavity begins to rise, meanwhile, the guide diaphragm 8 rises after the pressure in the pressure feedback cavity rises, along with the continuous rise of the pressure, the guide diaphragm 8 is continuously raised to push the guide seat nut 6 to rise, and the valve core 14 rises along with the guide seat nut 6, and also rises along with the action of the reset spring 17. After the valve core 14 is contacted with the sealing gasket 16, the sealing pair structure is closed, the compressed air stops flowing to the outlet, the pressure of the outlet is stable, and finally the purposes of high front end pressure, low rear end pressure and stability and pressure reduction are achieved. The purpose of changing the pressure of the outlet part is achieved by adjusting the adjusting screw 1 to compress the pressure spring 5 to change the stress value of the guide diaphragm 8.
The utility model discloses in the motion process of case 14, need keep between the sealed of inlet port 20 and the pressure feedback chamber sealed, be equipped with sealed diaphragm 10 on case 14 simultaneously, case 14 can not produce the powder in the motion process, has effectively improved gaseous cleanliness factor, simple structure, adopts injection molding and standard component, reduces the manufacturing difficulty, reduces the metal powder pollution; the pressure feedback cavity is isolated from the input cavity by adopting a sealing ring, so that the output flow of the pressure reducing valve is improved, and the installation is convenient and the powder pollution is reduced by adopting a plug-in type design; meanwhile, the design of a diaphragm type and a pressure feedback cavity is adopted, so that the powder pollution and the lubricating grease pollution are reduced.
Claims (10)
1. A cartridge type pressure reducing valve is characterized by comprising an adjusting valve sleeve (3), a main valve sleeve (19), an adjusting device arranged in the adjusting valve sleeve (3) and a valve body device arranged in the main valve sleeve (19); the main valve sleeve (19) is provided with an air inlet hole (20) and an air outlet hole (21); the adjusting valve sleeve (3) and the main valve sleeve (19) are arranged in a pressing connection mode, a pressure feedback cavity is formed in one side, close to the adjusting valve sleeve (3), of the main valve sleeve (19), and the adjusting device is pressed on the valve body device through the pressure feedback cavity; the adjusting device is provided with a guide diaphragm (8), and the guide diaphragm (8) seals one side of the adjusting device, which is contacted with the valve body device;
the valve body device comprises a pressure plate (9), a valve core seat (13) and a valve core (14), wherein the pressure plate (9) is arranged in a main valve sleeve (19) close to a pressure feedback cavity, the valve core seat (13) is arranged in the main valve sleeve (19) far away from the pressure feedback cavity, and the valve core seat (13) is arranged corresponding to an air inlet (20); the pressure plate (9) is connected with the valve core seat (13), one end of the valve core (14) is arranged on the pressure plate (9) and is in contact with the adjusting device through the pressure plate (9); the other end of the valve core (14) is provided with a sealing pair, and the sealing pair is arranged on a core shaft of the valve core (14) through the valve core seat (13) towards the air inlet (20); the valve core (14) reciprocates between the pressure plate (9) and the valve core seat (13) through high-pressure air entering the air inlet hole (20); a sealing diaphragm (10) is arranged on a mandrel of the valve core (14) in the direction towards the pressure plate (9) and is used for sealing high-pressure air flowing from the air inlet hole (20) to the air outlet hole (21); and a feedback groove (18) is formed in the port of the air outlet hole (21) along the side wall of the main valve sleeve (19), and the feedback groove (18) is communicated with the pressure feedback cavity.
2. A cartridge type pressure reducing valve according to claim 1, characterized in that the adjusting device comprises an adjusting screw (1), an adjusting nut (2), a centering plate (4), a pressure spring (5), a guide seat nut (6) and a guide seat (7);
the adjusting nut (2) is arranged at the top of the adjusting valve sleeve (3), the adjusting screw (1) is inserted into the adjusting valve sleeve (3) through being in threaded connection with the adjusting nut (2), and the centering plate (4) is connected with one end, inserted into the adjusting valve sleeve (3), of the adjusting screw (1); one end of the pressure spring (5) is fixed on the centering plate (4), the other end of the pressure spring is fixedly arranged on the guide seat (7), and the guide seat nut (6) is arranged on the guide seat (7) and is connected with the connecting rod of the pressure spring (5); a guide diaphragm (8) is arranged between the guide seat nut (6) and the guide seat (7); the guide membrane (8) is arranged along one side of the guide seat (7) contacted with the pressure plate (9) in a sealing way.
3. A cartridge type pressure reducing valve according to claim 2, characterized in that the cage nut (6) is arranged in contact with the valve element (14).
4. A cartridge type pressure reducing valve according to claim 1, wherein the distance from the sealing diaphragm (10) to the air inlet hole (20) on the valve core (14) is greater than the distance from the air outlet hole (21) to the air inlet hole (20) at the position of the valve core (14).
5. A cartridge type pressure reducing valve according to claim 1, wherein the outer wall of the main valve housing (19) is provided with a first sealing ring (11) at the junction of the feedback groove (18) and the pressure feedback chamber for isolating the high pressure air in the pressure feedback chamber from the outside air.
6. A cartridge type pressure reducing valve according to claim 1, wherein a second sealing ring (15) is provided on the outer wall of the main valve housing (19) between the inlet hole (20) and the outlet hole (21) for isolating the high pressure air in the inlet hole (20) and the outlet hole (21).
7. A cartridge type pressure reducing valve according to claim 1, characterized in that a sealing gasket (16) is arranged on the side of the valve core seat (13) facing the air inlet hole (20), and the sealing gasket (16) is arranged in contact with a sealing pair.
8. The cartridge type pressure reducing valve according to claim 1, wherein a return spring (17) is sleeved at one end of the valve core (14) facing the air inlet (20); the return spring (17) is arranged on the sealing pair and is abutted against the inner side of the air inlet hole (20).
9. A cartridge type pressure reducing valve according to claim 1, wherein the regulating valve sleeve (3) and the main valve sleeve (19) are provided by a screw thread connection.
10. A cartridge type pressure reducing valve according to claim 1, wherein one end of the air inlet hole (20) of the main valve housing (19) is fixedly inserted into a pressure reducing valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022654152.7U CN213809060U (en) | 2020-11-16 | 2020-11-16 | Plug-in mounting type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022654152.7U CN213809060U (en) | 2020-11-16 | 2020-11-16 | Plug-in mounting type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213809060U true CN213809060U (en) | 2021-07-27 |
Family
ID=76934969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022654152.7U Active CN213809060U (en) | 2020-11-16 | 2020-11-16 | Plug-in mounting type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213809060U (en) |
-
2020
- 2020-11-16 CN CN202022654152.7U patent/CN213809060U/en active Active
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