High-practicability pilot valve

Abstract

The utility model discloses a high-practicability pilot valve, relates to the technical field of pilot valves, and aims to solve the problems that the conventional pilot valve is insufficient in flexible assembly and synchronous management and control of multiple conveying lines, and the overall practicability and functionality need to be improved. A front cover connecting piece is installed on the end face of the rear cover, a front end cover is installed at one end of the front cover connecting piece, a push rod is installed at the middle axis position of the front cover connecting piece and the front end cover, a valve element is installed at a port of an air flow channel in the front cover connecting piece, and a cone structure is arranged on the push rod. The conical structure abuts against a port of the valve element, the symmetrical positions of the side surface of the front end cover are each provided with an air inlet hole, and the symmetrical positions of the side surface of the front cover connecting piece are each provided with an exhaust hole. And the effects of flexible assembly, synchronous management and control of the multiple conveying lines and regulation and control of the air inflow are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pilot valves, in particular to a highly practical pilot valve. Background Art

[0002] The pilot valve is a non-direct load safety valve, which consists of a main valve and a pilot valve (also called "auxiliary valve"). The main valve is driven by the medium discharged from the pilot valve. Since the pressure in the system is in a pulse form, it is also called a "pulse safety valve". It is widely used in contemporary industrial equipment control.

[0003] The existing pilot valves have deficiencies in flexible assembly and synchronous control of multiple transmission lines, and their overall practicality and functionality need to be improved. Utility Model Content

[0004] The utility model aims to provide a highly practical pilot valve which can be assembled flexibly, can synchronously control multiple transmission lines, and can regulate the size of the air intake.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A highly practical pilot valve comprises a rear cover, a front cover connecting piece is installed on the end face of the rear cover, a front end cover is installed on one end of the front cover connecting piece, a push rod is installed at the central axis position of the front cover connecting piece and the front end cover, a valve core is installed at the port of the internal air flow channel of the front cover connecting piece, a cone structure is arranged on the push rod, and the cone structure abuts against the port of the valve core, an air inlet hole is respectively arranged at the symmetrical position of the side surface of the front end cover, an exhaust hole is respectively arranged at the symmetrical position of the side surface of the front cover connecting piece, an adjusting mechanism is respectively installed at the port of the two air inlet holes, a push rod spring is sleeved on the outside of the push rod, one end of the push rod spring abuts against the inner end face of the front end cover, the front cover connecting piece and the rear cover are fixedly connected by a plurality of third hexagon socket bolts, and the front cover connecting piece and the front end cover are fixedly connected by a plurality of first hexagon socket bolts.

[0007] By adopting the above technical solution, the valve opening and closing operation can be stably performed, and two transmission lines can be synchronously controlled.

[0008] Furthermore, a piston is slidably installed inside the rear cover, one end of the piston corresponds to one end of the push rod, one end of the piston is sleeved on the outside of the piston spring, a front cover is installed at the port of the rear cover, a third O-ring is snap-fitted on the side surfaces of the piston and the front cover, and the front cover is fixedly connected to the rear cover by a plurality of second hexagon socket bolts.

[0009] By adopting the above technical solution, the sliding of the piston inside the rear cover can be used to push the push rod to move axially, thereby practicing the opening and closing operation of the valve.

[0010] Furthermore, a rubber protective sleeve is installed on the outer cover buckle of one end of the front end cover.

[0011] By adopting the above technical solution, the end of the valve can be effectively protected from the outside.

[0012] Furthermore, two snap grooves are provided on the outer surface of the push rod, and the first O-ring and the second O-ring are snap-fitted inside the two snap grooves respectively, the first O-ring is located inside the front end cover, and the second O-ring is located inside the front cover connector, and a snap groove is provided on the side surface of the valve core, and a fourth O-ring is snap-fitted inside the snap groove.

[0013] By adopting the above technical solution, the air tightness inside the valve can be effectively guaranteed.

[0014] Furthermore, the adjustment mechanism includes a connecting seat, one end of which is rotatably connected to the adjustment seat, an inner adjustment column is rotatably installed inside the adjustment seat, and a through hole is provided on the side surface of the inner adjustment column.

[0015] By adopting the above technical solution, it can be conveniently installed at the air inlet, and the air intake volume of the valve can be conveniently adjusted.

[0016] Furthermore, a filter screen cover is installed at the port of the adjustment seat, and a locking ring is threadedly connected to the port of the adjustment seat, and the locking ring is located at one end of the filter screen cover.

[0017] By adopting the above technical solution, the gas passing through the valve can be filtered.

[0018] In summary, the beneficial technical effects of the utility model are:

[0019] 1. When the valve is opened, the push rod can be moved axially so that the conical structure on the push rod is separated from the valve core. At this time, the air flow channel at the central axis position of the front cover and the front cover connecting piece can be effectively opened, and the external gas can effectively pass through the entire valve interior. When the valve is closed, the conical structure on the push rod is pressed against one end of the valve core, and the push rod spring is used to apply a force to one end of the conical structure in real time to ensure the stability of the valve closure. Since two air inlet holes are provided on the side surface of the front cover and two exhaust holes are provided on the side surface of the front cover connecting piece, the axial movement of the push rod can control the synchronous switching operation of the two transmission lines. The entire valve structure is compact and stable, and has high practicality. At the same time, the various components can be assembled together flexibly and conveniently.

[0020] 2. The utility model can utilize the adjustment mechanism to adjust the air flow rate of the air inlet hole of the valve. When adjusting, just twist the inner adjustment column, thereby effectively adjusting the gas intake volume of the entire valve. The functionality and practicality are effectively improved. Since a filter screen is installed at the port of the adjustment seat, a filtering operation can be performed before the gas passes through the valve to prevent impurities in the gas from clogging the valve air flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the utility model;

[0022] Figure 2 For this utility model Figure 1 AA analysis diagram;

[0023] Figure 3 This is the internal structure diagram of the regulating mechanism of the utility model.

[0024] In the figure: 1. rubber protective sleeve; 2. push rod; 3. first O-ring; 4. front end cover; 5. front cover connecting piece; 6. second O-ring; 7. back cover; 8. front cover; 9. third O-ring; 10. piston; 11. piston spring; 12. fourth O-ring; 13. valve core; 14. push rod spring; 15. first hexagon socket bolt; 16. second hexagon socket bolt; 17. third hexagon socket bolt; 18. adjustment mechanism; 19. adjustment seat; 20. connecting seat; 21. inner adjustment column; 22. filter screen; 23. locking ring. DETAILED DESCRIPTION

[0025] The method of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] See attached Figure 1 , Attachment Figure 2A highly practical pilot valve comprises a rear cover 7, a front cover connector 5 is mounted on the end surface of the rear cover 7, a front cover 4 is mounted on one end of the front cover connector 5, a push rod 2 is mounted at the central axis position of the front cover connector 5 and the front cover 4, a valve core 13 is mounted at the port of the internal air flow channel of the front cover connector 5, a cone structure is arranged on the push rod 2, and the cone structure abuts against the port of the valve core 13, an air inlet hole is arranged at the symmetrical position of the side surface of the front cover 4, and an exhaust hole is arranged at the symmetrical position of the side surface of the front cover connector 5 The two air inlet ports are provided with an adjusting mechanism 18, the outer portion of the push rod 2 is sleeved with a push rod spring 14, one end of the push rod spring 14 is against the inner end surface of the front end cover 4, the front cover connecting member 5 and the rear cover 7 are fixedly connected by a plurality of third hexagon socket bolts 17, the front cover connecting member 5 and the front end cover 4 are fixedly connected by a plurality of first hexagon socket bolts 15, a piston 10 is slidably installed inside the rear cover 7, one end of the piston 10 corresponds to one end of the push rod 2, and one end of the piston 10 is sleeved on the outer portion of the piston spring 11 , a front cover 8 is installed at the port of the rear cover 7, a third O-ring 9 is snap-fitted on the side surfaces of the piston 10 and the front cover 8, the front cover 8 is fixedly connected to the rear cover 7 by a plurality of second hexagon socket bolts 16, and a rubber protective sleeve 1 is buckled on the outer cover of one end of the front cover 4, wherein when the valve is opened, the push rod 2 can be moved axially so that the cone structure on the push rod 2 is separated from the valve core 13, at this time, the air flow channel at the central axis position of the front cover 4 and the front cover connector 5 can be effectively opened, and the external gas can effectively pass through the entire Inside the valve, when the valve is closed, the cone structure on the push rod 2 is against one end of the valve core 13, and the push rod spring 14 is used to apply a force to one end of the cone structure in real time to ensure the stability of the valve closure. Since two air inlet holes are provided on the side surface of the front cover 4 and two exhaust holes are provided on the side surface of the front cover connecting piece 5, the axial movement of the push rod 2 can control the synchronous switching operation of the two transmission lines. The entire valve structure is compact and stable, with high practicality, and the various components can be assembled together flexibly and conveniently.

[0027] Reference Figure 2 Two snap grooves are provided on the outer surface of the push rod 2, and the first O-ring 3 and the second O-ring 6 are snap-fitted inside the two snap grooves respectively, the first O-ring 3 is located inside the front end cover 4, the second O-ring 6 is located inside the front cover connector 5, a snap groove is provided on the side surface of the valve core 13, and the fourth O-ring 12 is snap-fitted inside the snap groove, wherein the first O-ring 3, the second O-ring 6 and the fourth O-ring 12 are utilized to improve the sealing performance between the internal movable components of the entire valve.

[0028] Reference Figure 3The adjusting mechanism 18 includes a connecting seat 20, one end of which is rotatably connected to an adjusting seat 19, an inner adjusting column 21 is rotatably installed inside the adjusting seat 19, a through hole is arranged on the side surface of the inner adjusting column 21, a filter screen cover 22 is installed at the port of the adjusting seat 19, a locking ring 23 is threadedly connected at the port of the adjusting seat 19, and the locking ring 23 is located at one end of the filter screen cover 22, wherein the adjusting mechanism 18 can be used to adjust the intake flow rate of the valve inlet hole, when adjusting, just twist the inner adjusting column 21, thereby effectively adjusting the gas intake amount of the entire valve, the functionality and practicality are effectively improved, and because the filter screen cover 22 is installed at the port of the adjusting seat 19, a filtering operation can be performed before the gas passes through the valve to prevent impurities mixed in the gas from blocking the valve air flow channel.

[0029] Working principle: When in use, first install the pilot valve at the designated position, then it can be used normally. When opening the valve, the piston 10 slides inside the rear cover 7, and the piston 10 pushes the push rod 2 to move the axial position, thereby separating the cone structure on the push rod 2 from the valve core 13. At this time, the air flow channel at the central axis position of the front cover 4 and the front cover connector 5 can be effectively opened, and the external gas can effectively pass through the entire valve. When closing the valve, the force applied to one end of the piston 10 is canceled, and the piston spring 11 is used to reset the piston 10. Since the push rod spring 14 applies a force to one end of the cone structure in real time, the cone structure on the push rod 2 can be It rests against one end of the valve core 13 to ensure the stability of the valve closure. Since two air inlet holes are arranged on the side surface of the front end cover 4 and two exhaust holes are arranged on the side surface of the front cover connecting piece 5, the axial movement of the push rod 2 can control the synchronous switching operation of the two transmission lines. In the process of opening the valve, the adjustment mechanism 18 can be used to adjust the air intake flow rate of the valve air inlet hole. When adjusting, twist the inner adjustment column 21, thereby effectively adjusting the gas intake amount of the entire valve, and the functionality and practicality are effectively improved. Since a filter mesh cover 22 is installed at the port of the adjustment seat 19, a filtering operation can be performed before the gas passes through the valve to prevent impurities contained in the gas from blocking the valve air flow channel.

[0030] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A highly practical pilot valve, comprising a rear cover (7), characterized in that: A front cover connecting piece (5) is installed on the end surface of the rear cover (7), a front end cover (4) is installed on one end of the front cover connecting piece (5), a push rod (2) is installed at the central axis position of the front cover connecting piece (5) and the front end cover (4), a valve core (13) is installed at the port of the internal air flow channel of the front cover connecting piece (5), a conical structure is provided on the push rod (2), and the conical structure abuts against the port of the valve core (13), an air inlet hole is respectively provided at a symmetrical position on the side surface of the front end cover (4), and the front cover connecting piece (5) is provided with a push rod (2) at the central axis position of the front cover connecting piece (5) and the front end cover (4). An exhaust hole is respectively arranged at a symmetrical position on the side surface of the member (5), and an adjustment mechanism (18) is respectively installed at the port of the two air inlet holes. A push rod spring (14) is sleeved on the outside of the push rod (2), and one end of the push rod spring (14) abuts against the inner end surface of the front cover (4). The front cover connecting member (5) and the rear cover (7) are fixedly connected by a plurality of third hexagon socket bolts (17), and the front cover connecting member (5) and the front cover (4) are fixedly connected by a plurality of first hexagon socket bolts (15).

2. A highly practical pilot valve according to claim 1, characterized in that: A piston (10) is slidably mounted inside the rear cover (7), one end of the piston (10) corresponds to one end of the push rod (2), one end of the piston (10) is sleeved on the outside of the piston spring (11), a front cover (8) is mounted at the end of the rear cover (7), a third O-ring (9) is snap-fitted on the side surfaces of the piston (10) and the front cover (8), and the front cover (8) is fixedly connected to the rear cover (7) by a plurality of second hexagon socket head bolts (16).

3. A highly practical pilot valve according to claim 1, characterized in that: A rubber protective sleeve (1) is mounted on the outer cover buckle of one end of the front end cover (4).

4. A highly practical pilot valve according to claim 1, characterized in that: Two snap grooves are provided on the outer surface of the push rod (2), and a first O-ring (3) and a second O-ring (6) are snap-fitted inside the two snap grooves, respectively; the first O-ring (3) is located inside the front cover (4), and the second O-ring (6) is located inside the front cover connector (5); a snap groove is provided on the side surface of the valve core (13), and a fourth O-ring (12) is snap-fitted inside the snap groove.

5. A highly practical pilot valve according to claim 1, characterized in that: The adjustment mechanism (18) comprises a connecting seat (20), one end of the connecting seat (20) is rotatably connected to an adjustment seat (19), an inner adjustment column (21) is rotatably mounted inside the adjustment seat (19), and a through hole is provided on the side surface of the inner adjustment column (21).

6. A highly practical pilot valve according to claim 5, characterized in that: A filter screen cover (22) is installed at the port of the adjustment seat (19), and a locking ring (23) is threadedly connected to the port of the adjustment seat (19), wherein the locking ring (23) is located at one end of the filter screen cover (22).

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