CN214999435U

CN214999435U - Pneumatic high-pressure double-pass axial flow valve

Info

Publication number: CN214999435U
Application number: CN202121606755.8U
Authority: CN
Inventors: 李照振; 国海燕
Original assignee: Qingdao Aogewei Fluid Technology Co ltd
Current assignee: Qingdao Aogewei Fluid Technology Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-12-03
Anticipated expiration: 2031-07-15

Abstract

The utility model discloses a pneumatic high-pressure bi-pass axial-flow valve, including the cylinder, the both ends of cylinder are provided with interior end cap respectively, be provided with the piston rod in the cylinder, interior end cap can be worn to locate respectively at the both ends of piston rod, and the end cap is kept away from each other in two and one end all extends to the both ends of cylinder, and the global of cylinder position department is extended to the end cap in two all is provided with the pilot hole, and the pilot hole is the through-hole. This application has the effect of being convenient for add emollient in the cylinder to in the pneumatic high pressure axial flow valve.

Description

Pneumatic high-pressure double-pass axial flow valve

Technical Field

The utility model belongs to the technical field of pneumatic valve and specifically relates to a pneumatic high pressure bi-pass axial-flow valve is related to.

Background

Pneumatic two-way valves are valves actuated by means of compressed air and generally comprise an inlet and an outlet, the outlet being closed by means of a pneumatic valve by means of a piston in a cylinder pushed by the compressed air, thus preventing the fluid from flowing through the valve.

Because the tightness in the cylinder needs to be kept, the outer peripheral surface of the piston rod can abut against the hole wall of the slot to slide, when the piston rod and the slot are in contact, due to friction generated by contact, a lubricant needs to be added between the piston rod and the end cover to maintain the service life of the piston rod and the end cover, but after the lubricant is used up, the inner end cover needs to be detached and added, which is troublesome.

SUMMERY OF THE UTILITY MODEL

The application provides a pneumatic high pressure bi-pass axle flow valve for solving above-mentioned technical problem, can be convenient for add emollient in the cylinder to pneumatic high pressure axle flow valve.

In order to solve the technical problem, the application provides a pneumatic high-pressure bi-pass axial flow valve, including the cylinder, the both ends of cylinder are provided with interior end cap respectively, be provided with the piston rod in the cylinder, the both ends of piston rod can wear to locate interior end cap respectively, and two interior end caps keep away from each other one end and all extend to the both ends of cylinder, and the global that two interior end caps extend cylinder position department all is provided with the pilot hole, and the pilot hole is the through-hole.

Furthermore, a first holding groove and a second holding groove are formed in the two inner end covers and correspond to the two sides of the pilot hole.

Furthermore, a piston is arranged in the cylinder barrel, the piston rod is fixedly connected to the axis position of the piston, a first boss is fixedly connected to each of two ends of the piston, two inner end covers are close to each other, one end of each inner end cover is fixedly connected to a second circular boss, the first boss and the second boss are coaxially arranged, and the diameters of the first boss and the second boss are the same.

Furthermore, the side wall of the cylinder barrel is provided with a first air vent and a second air vent, a first jack is arranged at the position, corresponding to the first air vent, of the side wall of the cylinder barrel, the first jack and the first air vent are arranged coaxially, a second jack is arranged at the position, corresponding to the second air vent, of the side wall of the cylinder barrel, and the second jack and the second air vent are arranged coaxially.

Further, the both ends of cylinder are provided with into end cover and play end cover respectively, be provided with a draw-in groove in the end cover of entrying, the piston rod can insert and locate in the draw-in groove, be provided with a disk seat in the play end cover, the global rigid coupling of disk seat has a plurality of supporting legs, and the disk seat is close to cylinder one end and is provided with a fixed slot, is provided with a sealed pad in the fixed slot, the flow groove that runs through the piston rod is seted up to the inside of piston rod, the both ends of piston rod can butt respectively in sealed pad and sealing ring.

Furthermore, a flow guide groove is formed in one end, close to the input end cover, of the piston rod, a first inclined surface is formed in one end, close to the output end cover, of the piston rod, one end, far away from the first inclined surface, of the first inclined surface tends to incline towards the direction of the axis of the piston rod, and a second inclined surface capable of being abutted to the first inclined surface is arranged on the surface of the sealing gasket.

Further, the sealing gasket is detachably connected in the valve seat.

Furthermore, a groove is formed in the bottom surface of the fixing groove, an inserting ring is fixedly connected to one end, away from the cylinder barrel, of the sealing gasket, and the inserting ring can be inserted into the groove.

The utility model discloses can add emollient between interior end cover and the piston rod through the guide's hole, reduce the friction between piston rod and the interior end cover, and can add sealing material in holding tank one and holding tank two, seal between piston rod and the interior end cover, wherein there is sealing material when wearing and tearing, the downthehole gaseous emission that has of guide's, help the staff of help to distinguish whether need to change sealing material, and the piston rod slides along its self axis direction, can be equipped with the spring at the piston rod overcoat, promote the stability that the piston removed, and boss one and boss two can fix the position of spring, avoid the inner wall and the piston friction of spring, reduce the loss of piston rod, the protection piston rod, promote the life of cylinder. Meanwhile, the pilot hole can also break the vacuum state generated when the valve moves, and the lubricating oil can also be filled to reduce the abrasion force value of the moving part and can also be used as an observation port for the abrasion of the wearing part. The design scheme can not lead the medium of the pipeline to be connected into the cylinder in series, and the compressed air of the cylinder can not flow into the pipeline. Compared with the loss of compressed air of a conventional valve, the design has low opening pressure, the use pressure penetrates through the ranges of negative pressure, low pressure and high pressure, 60% of air source pressure can be saved for the loss of energy of enterprises, and the service life of millions of products can be prolonged by the design test of the product per se, which is several times, dozens of times or hundreds of times different from that of the conventional valve. The valve has no moving parts outside the body, and industrial accidents can be reduced for enterprises. The product is made of stainless steel material and can be applied to conventional environment and corrosive environment.

Drawings

Fig. 1 is a schematic structural diagram of a pneumatic high-pressure two-way axial flow valve according to an embodiment of the present application.

FIG. 2 is a schematic cross-sectional view of a pneumatic high-pressure dual-spool valve according to an embodiment of the present application.

Fig. 3 is an exploded view of an embodiment of the present application to show an inner end cap.

FIG. 4 is a schematic cross-sectional view of an inner end cap in an embodiment of the present application.

Fig. 5 is a schematic cross-sectional view showing a groove in the embodiment of the present application.

Description of reference numerals: 1. a cylinder; 11. a cylinder barrel; 111. a first vent; 112. a second vent; 113. a first jack; 114. a second jack; 12. a piston; 121. a piston rod; 1211. a diversion trench; 1222. a first inclined plane; 122. a flow channel; 123. a first boss; 124. an annular groove; 1241. a seal member; 13. an inner end cap; 131. a convex ring; 132. a second boss; 133. a pilot hole; 14. a first accommodating groove; 141. a first sealing pad; 15. a second accommodating groove; 151. a second sealing pad; 2. entering an end cover; 21. an inlet; 22. a first mounting groove; 221. a card slot; 3. discharging the end cover; 31. an outlet; 32. a second mounting groove; 33. an outlet gasket; 4. a valve core; 41. a valve seat; 42. supporting legs; 43. fixing grooves; 431. a groove; 432. inserting a ring; 44. a gasket; 441. a second inclined plane; 45. fixing a gasket; 46. and (4) bolts.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses pneumatic high-pressure bi-pass axial flow valve.

Referring to fig. 1 and 2, a pneumatic high pressure bi-pass axial-flow valve, including cylinder 1, 1 both ends of cylinder are provided with into end cover 2 and go out end cover 3, it is cylindric to go into end cover 2 and go out end cover 3, cylinder 1 includes cylinder 11, it is the coaxial line setting to enter end cover 2 and go out end cover 3, go into end cover 2, it all passes through bolted connection in cylinder 11 to go out end cover 3, the one end that cylinder 11 was kept away from to enter end cover 2 has been seted up one and has been entered 21, enter 21 and go into end cover 2 coaxial line setting, it has seted up an export 31 to go out end cover 3 and keep away from 11 one end of cylinder, export 31 sets up with 21 coaxial lines of entry.

Referring to fig. 2, a first vent hole 111 and a second vent hole 112 are formed in one side of the cylinder 11, the axial directions of the first vent hole 111 and the second vent hole 112 are perpendicular to the axial direction of the cylinder 11, a first insertion hole 113 is formed in the position of the side wall of the cylinder 11 corresponding to the first vent hole 111, the first insertion hole 113 and the first vent hole 111 are coaxially arranged, a second insertion hole 114 is formed in the position of the side wall of the cylinder 11 corresponding to the second vent hole 112, the second insertion hole 114 and the second vent hole 112 are coaxially arranged, the first insertion hole 113 is used for being connected with an external air pipe with a standard diameter through the second insertion hole 114, and when the air cylinder works, the air inflow of the air cylinder 1 can be increased by increasing the diameters of the first vent hole 111 and the second vent hole 112.

Referring to fig. 2, a piston 12 is disposed in the cylinder 1 at a position corresponding to a position between the first vent hole 111 and the second vent hole 112, the piston 12 and the cylinder 11 are coaxially disposed, an outer circumferential surface of the piston 12 abuts against an inner side of the cylinder 11, the piston 12 divides the inside of the cylinder 11 into a first cavity and a second cavity, a piston rod 121 is fixedly connected to an axial position of the piston 12, the piston rod 121 and the piston 12 are integrally formed, and the piston 12 and the piston rod 121 which are integrally formed can improve concentricity between the piston 12 and the piston rod 121.

Referring to fig. 2 and 3, a flow groove 122 is formed in a piston rod 121, the flow groove 122 and the piston rod 121 are coaxially arranged, the flow groove 122 penetrates through the piston rod 121, annular inner end caps 13 are arranged at both ends of the cylinder 11, the two inner end caps 13 are symmetrically arranged, the inner end caps 13 and the cylinder 11 are coaxially arranged, inner circumferential surfaces of the two inner end caps 13 close to one end each other can be abutted against the inside of the cylinder 11, both ends of the piston rod 121 penetrate through the side where the two inner end caps 13 are away from each other, outer circumferential surfaces of the piston rod 121 are abutted against the inner circumferential surfaces of the inner end caps 13, outer circumferential surfaces of the two inner end caps 13 are fixedly connected with convex rings 131, and one side of the two convex rings 131 close to each other can be abutted against both ends of the cylinder 11. When the inlet end cover 2 and the outlet end cover 3 are connected to the cylinder 11, the two convex rings 131 can be pressed tightly, the inner end covers 13 are fixed to the two ends of the cylinder 11, the inside of the cylinder 11 is sealed, and after air enters the first air vent 111, air can be vented into the first cavity, so that the pressure in the first cavity is increased, the piston 12 is pressed towards the second cavity, and the piston rod 121 can move along the axis direction.

Referring to fig. 2, circular first bosses 123 are fixedly connected to two ends of the piston 12, the first bosses 123 are coaxially arranged with the piston 12, second bosses 132 are fixedly connected to two inner end covers 13, which are close to one end of each other, the second bosses 132 are coaxially arranged with the first bosses 123, the diameters of the first bosses 123 and the second bosses 132 are the same, when the piston is in operation, springs can be installed between the inner end covers 13 and the piston 12, the first bosses 123 and the second bosses 132 can guide the positions of the springs, friction between the inner wall of the spring and the piston rod 121 when the piston 12 moves is avoided, the piston rod 121 is protected, the service life of the piston rod 121 is prolonged, and the service life of the cylinder 1 is prolonged.

Referring to fig. 3 and 4, the inner end caps 13 are provided with pilot holes 133 at positions corresponding to the convex rings 131, the axial direction of the pilot holes 133 is perpendicular to the axial direction of the inner end caps 13, the pilot holes 133 are through holes, the circumferential surface of the inner end caps 13 is provided with a first accommodating groove 14 and a second accommodating groove 15 at two sides corresponding to the pilot holes 133, the first accommodating groove 14 and the second accommodating groove 15 are arranged along the axial direction of the inner end caps 13, the first accommodating groove 14 is fixedly connected with a first sealing pad 141, the second accommodating groove 15 is fixedly connected with a second sealing pad 151, the circumferential surface of the piston 12 is provided with an annular groove 124, the annular groove 124 is fixedly connected with an annular sealing element 1241, and the sealing element 1241 seals the space in the cylinder barrel 11; the first sealing pad 141 and the second sealing pad 151 can seal gaps between the piston 12 and the inner peripheral surface of the inner end cap 13, and when the piston is in operation, lubricant can be added between the piston rod 121 and the inner peripheral surface of the inner end cap 13 through the pilot hole 133, so that abrasion between the piston rod 121 and the inner end cap 13 is reduced; after the first sealing pad 141 is worn, gas in the cylinder 11 leaks and can be discharged from the pilot hole 133, a worker can hear the sound of the gas discharged from the pilot hole 133 so as to detach the inner end cover 13 to replace the first sealing pad 141, and the second sealing pad 151 can continuously maintain the sealing of the gap between the piston rod 121 and the inner end cover 13 after the second sealing pad 151 loses the action, so that the probability of failure of the cylinder 1 caused by the gas leaking between the piston rod 121 and the inner end cover 13 is reduced.

Referring to fig. 2, a mounting groove 22 has been seted up to the inside of entering end cover 2, mounting groove 22 communicates with entry 21 each other, a draw-in groove 221 has been seted up to the one end that corresponds mounting groove 22 and is close to entry 21 in the end cover 2, piston rod 121 one end can be inserted and locates in the draw-in groove, connect through going into end cover 2 and cylinder 11, cylinder 11 and entering end cover 2 compress tightly each other, can be close to the interior end cover 13 of going into end cover 2, cushion and sealing ring compress tightly fixedly, and piston rod 121 inserts in the draw-in groove 221, can let in the fluid that gets into entry 21 in the flow groove 122.

Referring to fig. 3 and 5, a second mounting groove 32 is formed in the outlet cover 3, a valve core 4 is disposed in the second mounting groove 32, the valve core 4 includes a circular valve seat 41, the valve seat 41 and the cylinder 11 are coaxially disposed, a plurality of support legs 42 are fixedly connected to the circumferential surface of the valve seat 41, the plurality of support legs 42 are arranged along the circumferential direction of the valve seat 41, one end of each support leg 42 close to the outlet 31 abuts against the inner bottom surface of the second mounting groove 32, a circular fixing groove 43 is formed in one side of the valve seat 41 close to the inlet 21, a groove 431 with a ring is formed in the bottom surface of the fixing groove 43, a circular sealing gasket 44 is disposed in the fixing groove 43, the sealing gasket 44 is made of polytetrafluoroethylene, the outer circumferential surface of the sealing gasket 44 can abut against the inner side wall of the fixing groove 43, an insert ring 432 is fixedly connected to one end of the sealing gasket 44 close to the opening, the insert ring 432 can be inserted into the groove 431, and a threaded hole is formed in the axial position of the fixing groove 43, the one end that sealed 44 keeps away from export 31 two is provided with a fixed shim 45, and screw hole female connection has one can wear to establish with sealed 44 and fixed shim 45's bolt 46, and sealed 44 carries out when losing in long-term work, is convenient for change sealed 44.

Referring to fig. 3, an outlet gasket 33 is disposed between the valve element 4 and the inner end cover 13 close to the outlet cover 3, one side of the outlet gasket 33 close to the second outlet 31 abuts against the support legs 42, the outlet gasket 33 can abut against one side of the inner end cover 13 close to the second outlet 31, the outlet cover 3 and the cylinder 11 are connected, the cylinder 11 and the outlet cover 3 are pressed against each other, the inner end cover 13 close to the outlet cover 3, the outlet gasket 33 and the valve element 4 can be pressed and fixed, the outlet gasket 33 can be used for filling a gap between the inner end cover 13 and the valve element 4, and the tightness of the first sealing gasket 141 is improved, so that the inner end cover 13 and the valve element 4 are fixed.

Referring to fig. 2, a guide groove 1211 is formed at one end of the piston rod 121 close to the end cap 2, one end of the guide groove 1211 close to the end cap 2 inclines towards a direction away from the axis of the piston rod 121, one end of the piston rod 121 close to the end cap 3 is provided with a first inclined surface 1222, one end of the first inclined surface 1222 close to the end cap 3 inclines towards a direction away from the axis of the piston rod 121, the outer peripheral surface of the sealing gasket 44 is provided with a second inclined surface 441, and one side of the second inclined surface 441 close to the cylinder 11 inclines towards a direction close to the axis of the piston rod 121. During operation, when the piston rod 121 moves towards the valve core 4 as a whole, the end of the piston rod 121 abuts against the sealing gasket 44, the first inclined surface 1222 and the second inclined surface 441 are matched to seal one end of the flow groove 122 close to the outlet 31, at this time, fluid flows in from the inlet 21, one end of the flow groove 122 is sealed by the sealing gasket 44, and the fluid cannot flow out; when the piston rod 121 is moved toward the sealing ring as a whole, the fluid is introduced into the flow groove 122 through the guide groove 1211, flows directly from the flow groove 122 to the outlet 31, and flows out of the outlet 31 through the gap between the support legs 42, thereby performing the function of a valve.

The working principle of the embodiment of the application is as follows: when the valve works, the first vent hole 111 is used for air intake, the second vent hole 112 is used for air exhaust, the air amount in the cavity I is increased, the air presses the piston rod 121 to slide towards the inlet 21, the side wall of the installation groove I22 at the end part of the piston rod 121, fluid flowing in from the outlet 31 enters the outlet end cover 3 through the flowing groove 122, and gaps among the supporting legs 42 of the valve seat 41 flow out of the outlet 31; the second air vent 112 is used for air intake, the first air vent 111 is used for air exhaust, the air amount in the cavity II is increased, the air presses the piston rod 121 to slide towards the direction of the outlet 31, the end part of the piston rod 121 is tightly pressed on the sealing gasket 44, the first inclined surface 1222 is matched with the second inclined surface 441, the sealing gasket 44 tightly seals the flow groove 122, so that the fluid is prevented from flowing through the axial flow valve, the first sealing gasket 141 and the second sealing gasket 151 can seal a gap between the piston rod 121 and the inner end cover 13, on one hand, the fluid is prevented from entering the cylinder 1, on the other hand, the gas in the cylinder 11 is prevented from leaking, whether the first sealing gasket 141 in the cylinder 1 is intact can be detected through the first guide hole 133, if the first sealing gasket 141 is worn and causes the gas to leak in the cylinder 1, the gas can be exhausted at the position of the first guide hole 133, a worker can be reminded of replacing the first sealing gasket 141, and the friction between the piston rod 121 and the inner end cover 13 can be reduced by adding lubricant to the cylinder 1 through the first guide hole 133, the durability of the cylinder 1 is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a pneumatic high pressure bi-pass axle flow valve which characterized in that: the cylinder comprises a cylinder barrel (11), wherein inner end covers (13) are arranged at two ends of the cylinder barrel (11) respectively, a piston rod (121) is arranged in the cylinder barrel (11), two ends of the piston rod (121) can penetrate through the inner end covers (13) respectively, one end of each inner end cover (13) which is far away from each other is extended to two ends of the cylinder barrel (11), pilot holes (133) are arranged on the circumferential surfaces of the two inner end covers (13) extending out of the position of the cylinder barrel (11), and the pilot holes (133) are through holes.

2. A pneumatic high-pressure dual-spool valve according to claim 1, characterized in that: two sides of the inner end covers (13) corresponding to the pilot holes (133) are provided with a first accommodating groove (14) and a second accommodating groove (15).

3. A pneumatic high-pressure dual-spool valve according to claim 2, characterized in that: be provided with piston (12) in cylinder (11), piston rod (121) rigid coupling is in the axis position department of piston (12), the equal rigid coupling in both ends of piston (12) has boss one (123), two interior end cover (13) are close to the equal rigid coupling of one end each other and the annular boss two (132), and boss one (123) set up and the two diameter is the same with boss two (132) coaxial line.

4. A pneumatic high-pressure dual-spool valve according to claim 3, characterized in that: first air vent (111) and second air vent (112) have been seted up to the lateral wall of cylinder (11), a jack (113) has been seted up to the position that the cylinder (11) lateral wall corresponds first air vent (111), and jack (113) and first air vent (111) coaxial line set up, a jack two (114) have been seted up to the position that the cylinder (11) lateral wall corresponds second air vent (112), and jack two (114) and second air vent (112) coaxial line set up.

5. A pneumatic high-pressure dual-spool valve according to claim 4, characterized in that: the two ends of the cylinder barrel (11) are respectively provided with an inlet end cover (2) and an outlet end cover (3), a clamping groove (221) is formed in the inlet end cover (2), the piston rod (121) can be inserted into the clamping groove (221), a valve seat (41) is arranged in the outlet end cover (3), a plurality of supporting legs (42) are fixedly connected to the peripheral surface of the valve seat (41), a fixing groove (43) is formed in one end, close to the cylinder barrel (11), of the valve seat (41), a sealing gasket (44) is arranged in the fixing groove (43), a flow groove (122) penetrating through the piston rod (121) is formed in the piston rod (121), and the two ends of the piston rod (121) can be respectively abutted to the sealing gasket (44) and the sealing ring.

6. A pneumatic high-pressure dual-spool valve according to claim 5, characterized in that: the end, close to the end cover (2), of the piston rod (121) is provided with a flow guide groove (1211), the end, close to the end cover (3), of the piston rod (121) is provided with a first inclined surface (1222), one end, far away from the first inclined surface (1222), of the first inclined surface (1222) inclines towards the direction far away from the axis of the piston rod (121), and a second inclined surface (441) capable of abutting against the first inclined surface (1222) is arranged on the surface of the sealing gasket (44).

7. A pneumatic high-pressure dual-spool valve according to claim 6, characterized in that: the sealing gasket (44) is detachably connected in the valve seat (41).

8. A pneumatic high-pressure dual-spool valve according to claim 7, characterized in that: a groove (431) is formed in the bottom surface of the fixing groove (43), an inserting ring (432) is fixedly connected to one end, far away from the cylinder barrel (11), of the sealing gasket (44), and the inserting ring (432) can be inserted into the groove (431).