Air inlet stop valve

Abstract

The utility model discloses an air inlet stop valve which comprises a valve body, a valve plate assembly and an electromagnetic valve assembly which is arranged on one side of the interior of the valve body, the electromagnetic valve assembly is communicated with one side of the valve body, and a brake assembly is fixed to the side, close to the electromagnetic valve assembly, of the upper portion of the front face of a valve shell. The brake assembly comprises a brake shell, a brake main shaft, a main shaft sleeve, a main shaft gasket, a torsion spring, a switch box shell, a switch box cover plate, a pointer, a pressing block, a main shaft nut and a cam. The problems that in the prior art, when an air inlet cut-off valve breaks down in the using process, an air inlet loop of an engine is difficult to cut off, guarantee measures are lacked, the safety risk of operation is increased, applicability is insufficient, equipment damage is caused seriously, and work stopping and production stopping are caused are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air intake cut-off valves, and in particular relates to an air intake cut-off valve. Technical Background

[0002] With the development of modern industry, the requirements for the accuracy and speed of fluid control are getting higher and higher. As an important gas control component, the air intake cut-off valve can quickly cut off the gas passage after receiving the operation signal, thereby realizing rapid fluid control. This valve usually has the advantages of simple structure, convenient operation, fast response speed, good corrosion resistance, etc., and can adapt to various complex working environments.

[0003] In the prior art, when an intake shut-off valve fails during use, it is difficult to cut off the engine intake circuit, lacks assurance measures, increases the safety risk of operations, and is not sufficiently applicable, which can seriously cause damage to equipment and lead to shutdowns. Utility Model Content

[0004] The utility model provides an intake cut-off valve to solve the problem proposed in the above background technology. In the prior art, when a failure occurs in the use of the intake cut-off valve, it is difficult to cut off the engine intake circuit, lacks guarantee measures, increases the safety risk of the operation, and has insufficient applicability, which may seriously cause damage to the equipment and cause shutdown of production.

[0005] An air intake cut-off valve comprises a valve body, a valve plate assembly, and a solenoid valve assembly arranged on one side of the interior of the valve body, and the solenoid valve assembly is connected to one side of the valve body, and the brake assembly is fixed on one side of the upper front side of the valve housing close to the solenoid valve assembly;

[0006] The brake assembly comprises a brake housing, a brake spindle, a spindle sleeve, a spindle gasket, a torsion spring, a switch box housing, a switch box cover, a pointer, a pressure block, a spindle nut, and a cam;

[0007] The end of the brake spindle passes through the middle part of one side of the brake housing, and a pointer is provided at the rear of the front end of the brake spindle, a spindle nut is threaded in front of the front end of the brake spindle, and a pressure block is provided between the pointer and the spindle nut, a cam is fixed to the rear end of the brake spindle, a switch box housing is aligned on one side of the cam, a switch box cover is threaded on the back of the switch box housing, and a spindle sleeve is provided on the outer side of the middle part of the brake spindle, and a spindle gasket is fitted on one end of the spindle sleeve, one end of the spindle gasket is in contact with the upper rear side wall of the inside of the brake housing, and a torsion spring is fixed to one side of the inside of the brake housing.

[0008] Furthermore, the valve body includes a valve housing, a front end cover, a rear end cover, a front pipe and a rear pipe;

[0009] The front end cover is threaded on the front side of the valve housing, and the rear end cover is threaded on the back side of the valve housing. The front pipe is connected to the middle part of one side of the front end cover, and the rear pipe is connected to the middle part of one side of the rear end cover.

[0010] Further, the valve plate assembly includes a jump block, a front sealing plate, a rear sealing plate, and a gate plate;

[0011] The jump block is threaded below one end of the rear sealing plate, and the front sealing plate is threaded above one end of the rear sealing plate, and the gate plate is welded below one side of the jump block.

[0012] Furthermore, the solenoid valve assembly (23) comprises a solenoid valve seat, a solenoid valve housing, a solenoid valve, a solenoid valve cover, and a pressure plate;

[0013] The solenoid valve seat is fixed on the other side of the front end cover, and the middle part of the solenoid valve seat is connected to the front end cover and is provided with a solenoid valve. The front part of the solenoid valve seat is threaded with a solenoid valve housing, and a pressure plate is fixed at one end inside the solenoid valve housing. The solenoid valve cover is threaded in the middle part of the front part of the solenoid valve housing, and the gap at the connection between the solenoid valve and the valve body is filled with an O-ring.

[0014] Furthermore, a shock-absorbing pad is provided at one end of the front end cover, a solenoid valve circuit groove is provided on the outer edge of the inner wall, and a card slot is opened on one side of the outer surface of the front end cover, and a screw hole is provided in the card slot to fix the shock-absorbing pad by inserting screws.

[0015] Furthermore, the brake main shaft shoulder presses the torsion spring into the brake housing through the main shaft sleeve.

[0016] In the present invention, an intake shut-off valve is proposed, wherein a micro switch is provided in the brake, which is connected to an external control device to monitor the state of the valve port in real time, and the solenoid valve is also connected to the external control device. When working, the valve plate assembly is tightened toward one side of the solenoid valve by a reset spring, and its relative position is fixed by the electromagnet extension head, and the valve port is in a normally open state. When current passes through the electromagnet, the electromagnet generates magnetic force to attract the electromagnet extension head, causing the electromagnet extension head to return to the inside of the electromagnet. At this time, the reset spring inside the brake resets the valve plate assembly to instantly close the valve port. When the valve port needs to be opened, a wrench needs to be used to manually rotate the pressure block in the brake to rotate the valve plate assembly to the solenoid valve. The solenoid valve fixes the position of the valve plate assembly, and the engine intake circuit can be cut off in time in case of a fault, thereby reducing the probability of accidents and the losses caused, being easy to use, and meeting the needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall assembly structure of the present invention in a two-dimensional state;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in a normally closed state;

[0019] In the figure: 1. O-ring; 2. shock-absorbing pad; 3. valve body; 10. rear pipe; 12. rear end cover; 14. front end cover; 15. front pipe; 19. pointer; 20. brake spindle; 21. valve plate assembly; 22. valve body; 23. solenoid valve assembly; 24. brake assembly; 26. jump block; 27. front sealing plate; 28. rear sealing plate; 29. ​​brake housing; 31. spindle sleeve; 32. spindle gasket; 33. torsion spring; 34. switch box housing; 35. switch box cover; 36. cam; 37. pressure block; 39. solenoid valve seat; 40. solenoid valve housing; 41. pressure plate; 43. solenoid valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All directional indications in the utility model (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] See also Figure 1-2 As shown, the utility model provides a technical solution: an air intake cut-off valve, comprising a valve body 22, a valve plate assembly 21, a solenoid valve assembly 23, and a brake assembly 24;

[0022] The valve plate assembly 21 is arranged on one side of the inner part of the valve body 22, and the solenoid valve assembly 23 is connected to one side of the valve body 22, and the brake assembly 24 is fixed on one side of the upper front side of the valve housing 3 close to the solenoid valve assembly 23;

[0023] The valve assembly is the main mounting carrier of the air intake cut-off valve, providing the air intake and outlet. The solenoid valve assembly is used in conjunction with the valve plate assembly to control the opening and closing of the air intake and outlet. The brake assembly is used to detect whether the valve plate assembly is closed.

[0024] The brake assembly 24 includes a brake housing 29, a brake spindle 20, a spindle sleeve 31, a spindle gasket 32, a torsion spring 33, a switch box housing 34, a switch box cover 35, a pointer 19, a pressure block 37, a spindle nut 38, and a cam 36;

[0025] The end of the brake spindle 20 passes through the middle of one side of the brake housing 29, and a pointer 19 is provided at the rear of the front end of the brake spindle 20, a spindle nut 38 is threaded in front of the front end of the brake spindle 20, and a pressure block 37 is provided between the pointer 19 and the spindle nut 38, a cam 36 is fixed to the rear end of the brake spindle 20, a switch box housing 34 is aligned on one side of the cam 36, a switch box cover 35 is threaded on the back of the switch box housing 34, and a spindle sleeve 31 is provided on the outer side of the middle of the brake spindle 20, and a spindle gasket 32 ​​is attached to one end of the spindle sleeve 31, one end of the spindle gasket 32 ​​is in contact with the upper rear side wall of the inside of the brake housing 29, and a torsion spring 33 is fixed to one side of the inside of the brake housing 29;

[0026] The brake spindle is the main mounting carrier of the brake assembly. The brake housing is used to install the brake spindle and provide external protection. The switch box housing is used to install the micro switch probe and protect the environment. The switch box cover seals the switch box housing. The pointer indicates the rotation angle of the brake spindle. The pressure block is used to press and fix the brake spindle and can rotate the brake by applying force. The cam is used to detect whether the valve is closed.

[0027] The valve body 22 includes a valve housing 3, a front cover 14, a rear cover 12, a front pipe 15, and a rear pipe 10;

[0028] The front end cover 14 is threaded on the front side of the valve housing 3, and the rear end cover 12 is threaded on the back side of the valve housing 3, the front pipe 15 is connected to the middle part of one side of the front end cover 14, and the rear pipe 10 is connected to the middle part of one side of the rear end cover 12;

[0029] The valve housing is the main mounting carrier of the valve body and provides external protection. The front cover and rear cover seal the valve housing at the front and back, and the front pipe and rear pipe are used for air inlet and outlet.

[0030] The valve plate assembly 21 includes a jump block 26, a front sealing plate 27, a rear sealing plate 28, and a gate plate 13;

[0031] The jump block 26 is threaded below one end of the rear sealing plate 28, and the front sealing plate 27 is threaded above one end of the rear sealing plate 28, and the gate plate 13 is welded below one side of the jump block 26;

[0032] When the jump block contacts and resists the extension of the solenoid valve, the valve plate assembly can be clamped, and the torsion spring can be tightened. At this time, the valve port is open, and the air in and out normally. Otherwise, the front sealing plate and the rear sealing plate are used to open and close the valve port.

[0033] The solenoid valve assembly 23 includes a solenoid valve seat 39, a solenoid valve housing 40, a solenoid valve 43, a solenoid valve cover 11, and a pressure plate 41;

[0034] The solenoid valve seat 39 is fixed to the other side of the front end cover 14, and the middle part of the solenoid valve seat 39 is connected to the front end cover 14 and is provided with a solenoid valve 43. The front part of the solenoid valve seat 39 is threaded with a solenoid valve housing 40, and a pressure plate 41 is fixed to one end of the solenoid valve housing 40. The solenoid valve cover 11 is threaded on the middle part of the front part of the solenoid valve housing 40, and the gap at the connection between the solenoid valve 43 and the valve body 22 is filled with an O-ring 1.

[0035] The solenoid valve seat is used to install the solenoid valve. The solenoid valve housing can be used in conjunction with the solenoid valve cover to protect the solenoid valve on the inside. The pressure plate is used to press and fix the solenoid valve structure. The O-ring ensures the tightness of the solenoid valve connection.

[0036] A shock absorbing pad 2 is provided at one end of the front end cover 14, a solenoid valve line groove 25 is provided at the outer edge of the inner wall, and a clamping groove 18 is provided on one side of the outer surface of the front end cover 14. The clamping groove 18 is provided with a screw hole, and the shock absorbing pad 2 is fixed by inserting screws therein;

[0037] The shock-absorbing pad provides the necessary buffering to reduce the damage caused by structural collision. The solenoid valve circuit slot is used to install the circuit required by the solenoid valve. The card slot is matched with the screw holes opened. After using the external screws, the shock-absorbing pad can be installed and fixed to the structure.

[0038] The shoulder of the brake spindle 20 presses the torsion spring 33 into the brake housing 29 through the spindle sleeve 31 .

[0039] Working principle:

[0040] When the intake shut-off valve device is working, the device is installed in a suitable position. In the brake assembly 24, the pressing block 37 is rotated with a wrench to rotate the valve plate assembly 21 to the bottom of the protruding head of the solenoid valve 43. At this time, the protruding head will clamp the left end of the jump block 26 of the valve plate assembly 21, and the valve plate assembly 21 will be clamped. At this time, the torsion spring 33 is tightened under the drive of the valve plate assembly 21, and the valve port is opened;

[0041] When the device is working normally, the micro switch probe is aligned with the cam 36, and the position of the cam 36 is detected to detect whether the valve is closed;

[0042] When an emergency situation requires closing the valve port, a control signal is given to the solenoid valve 43, and the solenoid valve 43 is energized, the protruding head will shrink, and the valve plate assembly 21 will be released. At this time, the torsion spring 33 drives the valve plate assembly 21 to quickly return to the original state, and the valve port is quickly closed, so that the autonomous air intake cut-off process can be carried out in time and quickly, reducing the probability of accidents and improving applicability and functionality.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air intake shut-off valve, characterized in that: It comprises a valve body (22), a valve plate assembly (21), a solenoid valve assembly (23), and a brake assembly (24); The valve plate assembly (21) is arranged on one side of the interior of the valve body (22), and the solenoid valve assembly (23) is connected to one side of the valve body (22), and the brake assembly (24) is fixed on one side of the upper front side of the valve housing (3) close to the solenoid valve assembly (23); The brake assembly (24) comprises a brake housing (29), a brake spindle (20), a spindle sleeve (31), a spindle gasket (32), a torsion spring (33), a switch box housing (34), a switch box cover (35), a pointer (19), a pressure block (37), a spindle nut (38), and a cam (36); The end of the brake spindle (20) passes through the middle of one side of the brake housing (29), and a pointer (19) is provided at the rear of the front end of the brake spindle (20), a spindle nut (38) is threadedly provided in front of the front end of the brake spindle (20), and a pressure block (37) is provided between the pointer (19) and the spindle nut (38), a cam (36) is fixed at the rear end of the brake spindle (20), a switch box housing (34) is aligned with one side of the cam (36), a switch box cover (35) is threadedly provided on the back of the switch box housing (34), and a spindle sleeve (31) is provided on the outer side of the middle of the brake spindle (20), and a spindle gasket (32) is fitted on one end of the spindle sleeve (31), one end of the spindle gasket (32) is in contact with the upper rear side wall of the brake housing (29), and a torsion spring (33) is fixed to one side of the brake housing (29).

2. An intake shut-off valve according to claim 1, characterized in that: The valve body (22) comprises a valve housing (3), a front end cover (14), a rear end cover (12), a front pipe (15), and a rear pipe (10); The front end cover (14) is threaded on the front side of the valve housing (3), and the rear end cover (12) is threaded on the back side of the valve housing (3); the front pipe (15) is connected to the middle part of one side of the front end cover (14), and the rear pipe (10) is connected to the middle part of one side of the rear end cover (12).

3. An intake shut-off valve according to claim 1, characterized in that: The valve plate assembly (21) comprises a jump block (26), a front sealing plate (27), a rear sealing plate (28), and a gate plate (13); The jump block (26) is threaded below one end of the rear sealing plate (28), and the front sealing plate (27) is threaded above one end of the rear sealing plate (28), and the gate plate (13) is welded below one side of the jump block (26).

4. The air intake shut-off valve according to claim 1, characterized in that: The solenoid valve assembly (23) comprises a solenoid valve seat (39), a solenoid valve housing (40), a solenoid valve (43), a solenoid valve cover (11), and a pressure plate (41); The solenoid valve seat (39) is fixed to the other side of the front end cover (14), and the middle part of the solenoid valve seat (39) is connected to the front end cover (14) and is provided with a solenoid valve (43). The front part of the solenoid valve seat (39) is threaded with a solenoid valve housing (40), and a pressure plate (41) is fixed to one end of the solenoid valve housing (40). The solenoid valve cover (11) is threaded on the middle part of the front part of the solenoid valve housing (40), and the gap at the connection between the solenoid valve (43) and the valve body (22) is filled with an O-ring (1).

5. An air intake shut-off valve according to claim 2, characterized in that: A shock-absorbing pad (2) is provided at one end of the interior of the front end cover (14), a solenoid valve line groove (25) is provided at the outer edge of the inner wall, and a clamping groove (18) is provided at one side of the outer surface of the front end cover (14), wherein a screw hole is provided in the clamping groove (18), and the shock-absorbing pad (2) is fixed by inserting a screw therein.

6. An intake shut-off valve according to claim 1, characterized in that: The shoulder of the brake main shaft (20) presses the torsion spring (33) into the brake housing (29) through the main shaft sleeve (31).

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