Anti-seismic and anti-loosening valve

Abstract

The utility model relates to the technical field of valves, and discloses an anti-shock and anti-loosening valve which comprises a hand wheel, an upper shock-absorbing gasket, a spring gasket, a valve cover and a valve body, a valve rod is fixedly installed on the outer surface of the hand wheel, an external thread is fixedly installed on the outer surface of the valve rod, an internal thread is fixedly arranged on the outer surface of the valve cover, and the external thread is in threaded connection with the internal thread. According to the anti-seismic and anti-loosening valve, by rotating a hand wheel, an external thread fixedly installed on the outer surface of a control valve rod is in threaded connection with an internal thread fixedly arranged on the outer surface of a valve deck till the outer surface of the hand wheel is connected with the upper surface of a connecting disc; and then two first bolts in threaded connection with the outer surface of the wheel are connected with two of a plurality of mounting holes formed in the outer surface of the connecting disc, and then first nuts are mounted to fix the first bolts, so that when the valve is closed, the valve rod and the valve cover are prevented from loosening, and the service life of the valve is prolonged. And the effect of valve damage caused by friction looseness between the valve rod and the valve cover during vibration is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a shock-resistant and loose-proof valve. Background Art

[0002] The gate valve is an opening and closing component, the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact between the valve seat and the gate. Usually the sealing surface is welded with metal materials to increase wear resistance.

[0003] Since the valve stem and the valve cover are connected by threads, the threads will wear out after long-term use, which can easily cause the valve stem and the valve cover to loosen. When encountering vibration, the valve stem and the valve cover will loosen due to friction, causing valve damage. At the same time, under high-intensity vibration, the various connecting parts of the valve will vibrate and wear, causing damage to the gate valve, resulting in a reduction in the service life of the gate valve. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a shock-resistant and anti-loosening valve to solve the problem mentioned in the above background technology that the valve stem and the valve cover are connected by threads, and the threads are worn after long-term use, which can easily lead to the valve stem and the valve cover becoming loose. When encountering vibration, the valve stem and the valve cover will loosen due to friction, causing damage to the valve. At the same time, under high-intensity vibration, the various connecting parts of the valve will vibrate and wear, causing damage to the gate valve, resulting in a reduction in the service life of the gate valve.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a seismic and anti-loosening valve, comprising a handwheel, an upper shock-absorbing gasket, a spring gasket, a valve cover and a valve body, the outer surface of the handwheel is fixedly mounted with a valve stem, the outer surface of the valve stem is fixedly mounted with an external thread, the outer surface of the valve cover is fixedly provided with an internal thread, the external thread is threadedly connected to the internal thread, the outer surface of the valve cover is fixedly mounted with a connecting plate, the outer surface of the connecting plate is provided with a plurality of mounting holes, the outer surface of the handwheel is threadedly connected with two No. 1 bolts, the outer surfaces of the two No. 1 bolts are threadedly connected with No. 1 nuts, the outer surfaces of the No. 1 bolts are movably connected to the inside of the mounting hole, and the outer surface of the No. 1 nut is movably connected to the outer surface of the connecting plate.

[0006] Preferably, a groove plate is fixedly installed on the outer surface of the valve body, and a raised plate is fixedly installed on the outer surface of the valve cover away from the connecting plate, and the raised plate is snap-connected with the groove plate, and screw holes are provided on the outer surfaces of the raised plate, the inner threads of the screw holes are connected with fixing bolts, two spring washers are provided on the outer surface of the fixing bolts, and a nut is threadedly connected with the outer surface of the fixing bolts, and a valve seat is provided inside the valve body.

[0007] Preferably, an upper shock-absorbing gasket is fixedly mounted on the upper surface of the valve cover, a mounting shell is fixedly mounted on the lower surface of the handwheel, a lower shock-absorbing gasket is fixedly mounted inside the mounting shell, and an outer surface of the upper shock-absorbing gasket is movably connected to the outer surfaces of the mounting shell and the lower shock-absorbing gasket.

[0008] Preferably, a valve plate is fixedly mounted on the outer surface of the valve stem away from the handwheel, the valve plate is conical, a metal sealing layer is fixedly connected to the outer surface of the valve seat, and the outer surface of the valve plate is movably connected to the outer surfaces of the valve cover, valve body and metal sealing layer.

[0009] Preferably, the two No. 1 bolts are respectively arranged at both ends of the handwheel, and the plurality of mounting holes are distributed in a circular array.

[0010] Preferably, outer surfaces of the two spring washers are movably connected to outer surfaces of the valve cover and the valve body respectively, and the outer surface of the upper shock-absorbing washer is movably connected to the outer surface of the valve stem.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The anti-seismic and anti-loosening valve controls the external thread fixed on the outer surface of the valve stem to be threadedly connected with the internal thread fixed on the outer surface of the valve cover by turning the hand wheel until the outer surface of the hand wheel is connected to the upper surface of the connecting plate, and then connects two No. 1 bolts threadedly connected to the outer surface of the wheel to two of the several mounting holes opened on the outer surface of the connecting plate, and then installs the No. 1 nut to fix the No. 1 bolt, thereby preventing the valve stem and the valve cover from loosening when the valve is closed, and reducing the friction between the valve stem and the valve cover when encountering vibration, which may cause damage to the valve.

[0013] 2. The anti-vibration and anti-loosening valve has a groove plate fixedly installed on the outer surface of the valve body, and a raised plate fixedly installed on the outer surface of the valve cover away from the connecting plate. The raised plate is snap-connected with the groove plate to enhance the firmness of the connection between the valve cover and the valve body. The valve cover and the valve body are tightly connected by fixing bolts and two spring washers, thereby achieving the effect of reducing damage to the gate valve caused by vibration wear and improving the service life of the gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front cross-sectional schematic diagram of the structure of the utility model;

[0015] Figure 2 The utility model structure Figure 1 Schematic diagram at A in the middle;

[0016] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the structure of the utility model;

[0017] Figure 4It is a front view schematic diagram of the structure of the utility model;

[0018] Figure 5 It is a schematic top view of the structure of the utility model.

[0019] In the figure: 1. handwheel; 2. valve stem; 3. valve cover; 4. upper shock-absorbing gasket; 5. mounting shell; 6. lower shock-absorbing gasket; 7. external thread; 8. internal thread; 9. connecting plate; 10. mounting hole; 11. No. 1 bolt; 12. No. 1 nut; 13. valve plate; 14. valve body; 15. groove plate; 16. raised plate; 17. fixing bolt; 18. spring gasket; 19. nut; 20. valve seat; 21. metal sealing layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1:

[0022] Please refer to Figure 1-5 ,

[0023] A seismic and anti-loosening valve comprises a handwheel 1, an upper shock-absorbing gasket 4, a spring gasket 18, a valve cover 3 and a valve body 14. A valve stem 2 is fixedly mounted on the outer surface of the handwheel 1, an external thread 7 is fixedly mounted on the outer surface of the valve stem 2, an internal thread 8 is fixedly arranged on the outer surface of the valve cover 3, the external thread 7 is threadedly connected to the internal thread 8, a connecting plate 9 is fixedly mounted on the outer surface of the valve cover 3, a plurality of mounting holes 10 are provided on the outer surface of the connecting plate 9, two No. 1 bolts 11 are threadedly connected to the outer surface of the handwheel 1, a No. 1 nut 12 is threadedly connected to the outer surface of the two No. 1 bolts 11, the outer surfaces of the No. 1 bolts 11 are movably connected to the inside of the mounting hole 10, and the outer surface of the No. 1 nut 12 is movably connected to the outer surface of the connecting plate 9.

[0024] Specifically, the handwheel 1 is rotated to threadably connect the external thread 7 fixedly installed on the outer surface of the control valve stem 2 with the internal thread 8 fixedly arranged on the outer surface of the valve cover 3, until the outer surface of the handwheel 1 is connected to the upper surface of the connecting disk 9, and then the two No. 1 bolts 11 threadedly connected to the outer surface of the wheel are connected to two of the several mounting holes 10 opened on the outer surface of the connecting disk 9, and then the No. 1 nuts 12 are installed to fix the No. 1 bolts 11, thereby achieving the effect of preventing the valve stem 2 and the valve cover 3 from loosening when the valve is closed, and reducing the frictional loosening of the valve stem 2 and the valve cover 3 when encountering vibrations, which may cause damage to the valve.

[0025] In the embodiment: an upper shock-absorbing gasket 4 is fixedly mounted on the upper surface of the valve cover 3, a mounting shell 5 is fixedly mounted on the lower surface of the hand wheel 1, a lower shock-absorbing gasket 6 is fixedly mounted inside the mounting shell 5, and an outer surface of the upper shock-absorbing gasket 4 is movably connected to the outer surfaces of the mounting shell 5 and the lower shock-absorbing gasket 6.

[0026] Specifically, an upper shock-absorbing gasket 4 is fixedly installed on the upper surface of the valve cover 3, and a mounting shell 5 is fixedly installed on the lower surface of the hand wheel 1, and a lower shock-absorbing gasket 6 is fixedly installed inside the mounting shell 5, and the outer surface of the upper shock-absorbing gasket 4 is connected to the outer surfaces of the mounting shell 5 and the lower shock-absorbing gasket 6 when the valve is tightly closed, thereby improving the anti-seismic effect of the valve when it is tightly closed.

[0027] In the embodiment: two No. 1 bolts 11 are respectively arranged at two ends of the hand wheel 1, and a plurality of mounting holes 10 are distributed in a circular array.

[0028] Specifically, since two No. 1 bolts 11 are respectively arranged at both ends of the handwheel 1, and a plurality of mounting holes 10 are distributed in a circular array, when the valve is tightly closed, the two No. 1 bolts 11 are connected to the mounting holes 10, thereby improving the tightness of the valve and having stronger shock resistance.

[0029] Working principle: by turning the handwheel 1, the external thread 7 fixedly installed on the outer surface of the control valve stem 2 is threadedly connected with the internal thread 8 fixedly arranged on the outer surface of the valve cover 3, until the outer surface of the handwheel 1 is connected to the upper surface of the connecting disk 9, and the outer surface of the handwheel 1 is threadedly connected with two No. 1 bolts 11, the outer surfaces of the two No. 1 bolts 11 are threadedly connected with No. 1 nuts 12, the outer surfaces of the No. 1 bolts 11 are movably connected with the inside of the mounting hole 10, the outer surface of the No. 1 nut 12 is movably connected with the outer surface of the connecting disk 9, and then the two No. 1 bolts 11 threadedly connected on the outer surface of the wheel are connected to two of the several mounting holes 10 opened on the outer surface of the connecting disk 9, and then the No. 1 nuts 12 are installed to fix the No. 1 bolts 11. Compared with the related art, the seismic and anti-loosening valve provided by the utility model has the following beneficial effects: thereby achieving the effect of preventing the valve stem 2 and the valve cover 3 from loosening when the valve is tightly closed, and reducing the frictional loosening of the valve stem 2 and the valve cover 3 when encountering vibration, which leads to damage to the valve.

[0030] Embodiment 2:

[0031] Please refer to Figure 1-5 ,

[0032] A groove plate 15 is fixedly installed on the outer surface of the valve body 14, and a raised plate 16 is fixedly installed on the outer surface of the valve cover 3 away from the connecting plate 9. The raised plate 16 is snap-connected with the groove plate 15. Screw holes are provided on the outer surfaces of the raised plate 16, the groove plate 15, the valve cover 3 and the valve body 14. The internal threads of the screw holes are connected with fixing bolts 17. Two spring washers 18 are provided on the outer surface of the fixing bolt 17. A nut 19 is threadedly connected to the outer surface of the fixing bolt 17. A valve seat 20 is provided inside the valve body 14.

[0033] Specifically, a groove plate 15 is fixedly installed on the outer surface of the valve body 14, and a protrusion plate 16 is fixedly installed on the outer surface of the valve cover 3 away from the connecting plate 9. The protrusion plate 16 is engaged with the groove plate 15 to enhance the firmness of the connection between the valve cover 3 and the valve body 14. The valve cover 3 and the valve body 14 are tightly connected by fixing bolts 17 and two spring washers 18, thereby achieving the effect of reducing damage to the gate valve caused by vibration wear and improving the service life of the gate valve.

[0034] In the embodiment: a valve plate 13 is fixedly mounted on the outer surface of the valve stem 2 away from the hand wheel 1, the valve plate 13 is conical, a metal sealing layer 21 is fixedly connected to the outer surface of the valve seat 20, and the outer surface of the valve plate 13 is movably connected to the outer surfaces of the valve cover 3, the valve body 14 and the metal sealing layer 21.

[0035] Specifically, since the valve plate 13 is fixedly installed on the outer surface of the valve stem 2 away from the handwheel 1, the valve plate 13 is conical, the outer surface of the valve seat 20 is fixedly connected with the metal sealing layer 21, and the outer surface of the valve plate 13 is movably connected with the outer surfaces of the valve cover 3, the valve body 14 and the metal sealing layer 21, the control handwheel 1 drives the valve stem 2 to spiral up and down, driving the valve plate 13 to move, and when the valve plate 13 is connected to the metal sealing layer 21, the valve is in a closed state.

[0036] In the embodiment, the outer surfaces of the two spring washers 18 are movably connected to the outer surfaces of the valve cover 3 and the valve body 14 respectively, and the outer surface of the upper shock-absorbing washer 4 is movably connected to the outer surface of the valve stem 2 .

[0037] Specifically, the outer surfaces of the two spring washers 18 are movably connected to the outer surfaces of the valve cover 3 and the valve body 14 respectively, so as to dampen the shock of the two ends of the fixing bolt 17, thereby reducing the collision and wear between the fixing bolt 17 and the valve cover 3 and the valve body 14 caused by vibration when the valve is in use, thereby reducing damage to the fixing bolt 17. At the same time, the outer surface of the upper shock-absorbing gasket 4 is movably connected to the outer surface of the valve stem 2, thereby improving the use effect of the upper shock-absorbing gasket 4.

[0038] Working principle: a groove plate 15 is fixedly installed on the outer surface of the valve body 14, and a raised plate 16 is fixedly installed on the outer surface of the valve cover 3 away from the connecting plate 9. The raised plate 16 is snap-connected with the groove plate 15 to enhance the firmness of the connection between the valve cover 3 and the valve body 14. Screw holes are provided on the outer surfaces of the valve cover 3 and the valve body 14 through the raised plate 16 and the groove plate 15. The internal threads of the screw holes are connected with fixing bolts 17. Two spring washers 18 are provided on the outer surface of the fixing bolt 17. Nuts 19 are threadedly connected to the outer surface of the fixing bolt 17. The fixing bolts 17 and the two spring washers 18 tightly connect the valve cover 3 and the valve body 14. Compared with the relevant technology, the anti-seismic and anti-loosening valve provided by the utility model has the following beneficial effects: thereby achieving the effect of reducing the damage to the gate valve caused by vibration wear and improving the service life of the gate valve.

[0039] Although 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. A seismic and anti-loosening valve, comprising a hand wheel (1), an upper shock-absorbing gasket (4), a spring gasket (18), a valve cover (3) and a valve body (14), characterized in that: The outer surface of the handwheel (1) is fixedly mounted with a valve stem (2), the outer surface of the valve stem (2) is fixedly mounted with an external thread (7), the outer surface of the valve cover (3) is fixedly provided with an internal thread (8), the external thread (7) is threadedly connected to the internal thread (8), the outer surface of the valve cover (3) is fixedly mounted with a connecting plate (9), the outer surface of the connecting plate (9) is provided with a plurality of mounting holes (10), the outer surface of the handwheel (1) is threadedly connected with two No. 1 bolts (11), the outer surfaces of the two No. 1 bolts (11) are threadedly connected with No. 1 nuts (12), the outer surfaces of the No. 1 bolts (11) are movably connected to the inside of the mounting hole (10), and the outer surface of the No. 1 nut (12) is movably connected to the outer surface of the connecting plate (9).

2. The anti-vibration and anti-loosening valve according to claim 1, characterized in that: A groove plate (15) is fixedly mounted on the outer surface of the valve body (14); a protrusion plate (16) is fixedly mounted on the outer surface of the valve cover (3) away from the connecting plate (9); the protrusion plate (16) is snap-fitted with the groove plate (15); screw holes are provided on the outer surfaces of the protrusion plate (16), the groove plate (15), the valve cover (3) and the valve body (14); a fixing bolt (17) is threadedly connected to the inner surface of the screw hole; two spring washers (18) are provided on the outer surface of the fixing bolt (17); a nut (19) is threadedly connected to the outer surface of the fixing bolt (17); and a valve seat (20) is provided inside the valve body (14).

3. The anti-vibration and anti-loosening valve according to claim 1, characterized in that: An upper shock-absorbing gasket (4) is fixedly mounted on the upper surface of the valve cover (3), a mounting shell (5) is fixedly mounted on the lower surface of the hand wheel (1), a lower shock-absorbing gasket (6) is fixedly mounted inside the mounting shell (5), and an outer surface of the upper shock-absorbing gasket (4) is movably connected to the outer surfaces of the mounting shell (5) and the lower shock-absorbing gasket (6).

4. The anti-vibration and anti-loosening valve according to claim 2, characterized in that: A valve plate (13) is fixedly mounted on the outer surface of the valve stem (2) away from the hand wheel (1); the valve plate (13) is conical in shape; a metal sealing layer (21) is fixedly connected to the outer surface of the valve seat (20); and the outer surface of the valve plate (13) is movably connected to the outer surfaces of the valve cover (3), the valve body (14) and the metal sealing layer (21).

5. The anti-vibration and anti-loosening valve according to claim 1, characterized in that: The two No. 1 bolts (11) are respectively arranged at two ends of the hand wheel (1), and the plurality of mounting holes (10) are distributed in a circular array.

6. The anti-vibration and anti-loosening valve according to claim 1, characterized in that: The outer surfaces of the two spring washers (18) are movably connected to the outer surfaces of the valve cover (3) and the valve body (14), respectively, and the outer surface of the upper shock-absorbing washer (4) is movably connected to the outer surface of the valve stem (2).

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