Wear-resistant ball valve with pressure reduction protection structure

Abstract

The utility model relates to the technical field of wear-resistant ball valves, in particular to a wear-resistant ball valve with a pressure reduction protection structure, which comprises a wear-resistant ball valve body, a connecting pipe fixedly connected to the front end of the wear-resistant ball valve body, a buffer passive component mounted on the inner side of the connecting pipe, and a plugging cover mounted at the right end of the connecting pipe. A spiral slide way is formed in the inner side of the runner pipe, a base is fixedly connected to the right side of the runner pipe, an extending screw cylinder and a first rubber sealing ring are fixedly connected to the right end of the base, the first rubber sealing ring is located on the periphery of the extending screw cylinder, and a pressure relief inlet communicated with the spiral slide way is formed in the rear end, close to the spiral slide way, of the runner pipe. According to the wear-resisting ball valve, the wear-resisting ball valve is protected in a pressure reduction mode through gas damping buffering medium impact, the spiral gas track is adopted, a buffering mechanism is fully isolated, occupied space is reduced, the collision risk is reduced, and use safety and operation stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wear -resistant ball valve technical field, concretely is a wear -resistant ball valve with pressure relief protection structure. BACKGROUND

[0002] Wear -resistant ball valve is a kind of valve suitable for containing solid particles, corrosive medium or high wear condition, core is manufactured valve core, valve seat and other key sealing components by adopting hard alloy, ceramic, spray wear -resistant coating and other high-strength wear -resistant materials, and it is designed to be matched with spherical sealing structure, realizes medium cutoff and regulating function, it has the characteristics of ball valve flow passage unobstructed, opens and closes rapidly, can effectively resist the wear caused by medium scouring, particle grinding, reduces the damage and leakage risk of sealing surface, maintains good on-off sealing and operation flexibility simultaneously, is widely used in mine, chemical industry, metallurgy, sewage treatment and other strong wear medium conveying system, prolongs the service life of valve and guarantees system stable operation;

[0003] Wear -resistant ball valve is commonly used in mine, chemical industry and other high-pressure medium conveying scenes, when high-pressure medium directly impacts valve core, valve seat and valve body flow passage after wear -resistant ball valve is closed, it can intensify the fatigue loss of wear -resistant material, and also possibly cause sealing surface deformation, loosening, pressure relief protection can decompose instantaneous high pressure, reduces impact degree, protects the structural integrity of hard alloy, ceramic and other wear -resistant components, avoids premature failure;

[0004] The prior art can realize the effect of pressure reduction, but this adjusting mode needs to leave a certain activity distance for adjusting screw rod, which not only increases the space occupation of wear -resistant ball valve, but also the protruding part is easy to receive accidental collision, leading to damage and unable to adjust, therefore, a wear -resistant ball valve with pressure relief protection structure is provided for the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a wear -resistant ball valve with pressure relief protection structure to solve the problems in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a wear -resisting ball valve with pressure relief protection structure, including wear -resisting ball valve body, the front end fixedly connected with connecting pipe of wear -resisting ball valve body, the inboard mounting of connecting pipe has the buffer passive component, the right end of connecting pipe is installed and is blocked the lid, the connecting pipe includes the flow -through pipe, the inboard of flow -through pipe is equipped with spiral slide, the right side fixedly connected with pedestal of flow -through pipe, the right end fixedly connected with extension screw cylinder and first rubber seal ring of pedestal, first rubber seal ring is located the periphery of extension screw cylinder, the rear end of flow -through pipe is equipped with pressure -relief inlet with spiral slide intercommunication close to spiral slide, the front and back both ends of spiral slide that flow -through pipe sets up are all fixedly connected with the fender ring for limiting, the buffer passive component includes spiral rod, spiral rod left and right two ends all are fixedly connected with third rubber seal ring.

[0008] As the further optimization of the utility model, the rear end of the flow-through pipe is fixedly connected with the front end of the wear-resistant ball valve body, the inner side of the flow-through pipe is in communication with the inner side of the wear-resistant ball valve body, and the front end of the flow-through pipe is fixedly connected with a first flange plate.

[0009] As the further optimization of the utility model, the inner side of the pedestal and the inner side of the extension screw cylinder are both provided with a liquid filling opening, the inner side of the liquid filling opening is fixedly connected with a second rubber seal ring, and the liquid filling opening is in communication with the spiral slide.

[0010] As the further optimization of the utility model, the diameter of the pedestal is 1.3 times the diameter of the extension screw cylinder, and a spacing for mounting the blocking cover is provided between the right end of the extension screw cylinder and the right end of the pedestal.

[0011] As the further optimization of the utility model, the outer side of the extension screw cylinder is provided with threads, the inner side of the blocking cover close to the left end is provided with a threaded hole, the blocking cover is screw-mounted on the outer side of the extension screw cylinder through the threaded hole, and the left end of the blocking cover is attached to the first rubber seal ring.

[0012] As the further optimization of the utility model, the inner side of the fender ring is a hollow structure, and the fender ring is located at the upper end of the pressure relief inlet.

[0013] As the further optimization of the utility model, the shape of the spiral rod is a spiral structure, the spiral rod is embeddedly installed in the inside of the spiral slide, and the shape of the spiral rod matches the shape of the spiral slide.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses a connecting pipe, buffer passive component and plugging cover are set up, when the device is in pressure relief protection to the wear -resistant ball valve, the core is through gaseous damping effect buffer medium impact force, simultaneously, the device adopts spiral structure design gas flow track, and whole buffer mechanism is isolated with external environment completely, this design not only greatly reduces the space occupancy, avoids the use of ball valve to be limited by installation space, still significantly reduces the risk that buffer part and external structure collide, effectively promotes the security and operating stability of device use. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic diagram of the utility model;

[0017] Figure 2 It is whole explosion structure schematic diagram of the utility model;

[0018] Figure 3 It is connecting pipe structure schematic diagram of the utility model;

[0019] Figure 4 It is A place structure schematic diagram of the utility model Figure 3 ;

[0020] Figure 5 It is one of connecting pipe's cross section structure schematic diagram of the utility model;

[0021] Figure 6 It is buffer passive component structure schematic diagram of the utility model;

[0022] Figure 7 It is B place structure schematic diagram of the utility model Figure 6 ;

[0023] Figure 8 It is two of connecting pipe's cross section structure schematic diagram of the utility model.

[0024] In the drawing: 1, wear -resistant ball valve body;

[0025] 2, connecting pipe;21, flow pipe;22, spiral slide;23, base;24, extension screw cylinder;25, first rubber sealing ring;26, second rubber sealing ring;27, liquid filling port;28, pressure release inlet;29, baffle

[0026] 3, buffer passive component;31, spiral rod;32, third rubber sealing ring;

[0027] 4, plugging cover;5, first flange plate. DETAILED DESCRIPTION

[0028] Clearly, the embodiments described are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0030] Please refer to Figures 1-8 The present application provides a technical scheme:

[0031] The utility model provides a kind of wear-resisting ball valve with pressure relief protection structure, including wear-resisting ball valve body 1, wear-resisting ball valve body 1 front end fixedly connected with connecting pipe 2, connecting pipe 2 inner side is equipped with buffer passive component 3, connecting pipe 2 right end is equipped with plugging cover 4, connecting pipe 2 includes flow pipe 21, spiral slide 22 is arranged in the inner side of flow pipe 21, flow pipe 21 right side is fixedly connected with pedestal 23, pedestal 23 right end is fixedly connected with extension screw cylinder 24 and first rubber seal ring 25, first rubber seal ring 25 is located in the periphery of extension screw cylinder 24, flow pipe 21 is equipped with pressure relief inlet 28 in the rear end close to spiral slide 22, which is communicated with spiral slide 22, both ends of spiral slide 22 that flow pipe 21 is equipped with are fixedly connected with stop ring 29 for limiting, buffer passive component 3 includes spiral rod 31, and both ends of spiral rod 31 are fixedly connected with third rubber seal ring 32.

[0032] As a further embodiment of the present application, the rear end of the flow pipe 21 is fixedly connected to the front end of the wear-resisting ball valve body 1, the inner side of the flow pipe 21 is in communication with the inner side of the wear-resisting ball valve body 1, and the front end of the flow pipe 21 is fixedly connected with a first flange plate 5. Through the above arrangement, the device is stably connected with the ball valve and the pipeline, ensuring smooth introduction of the medium into the buffer mechanism and providing a continuous passage for gas damping pressure relief. At the same time, the fixed connection improves the overall structural stability and prevents displacement caused by vibration during pressure relief.

[0033] As a further implementation of the present scheme, the inner side of the base 23 and the inner side of the extended spiral cylinder 24 are provided with a liquid filling port 27, and the inner side of the liquid filling port 27 is fixedly connected with a second rubber sealing ring 26. The liquid filling port 27 is in communication with the spiral slide 22. Through the above arrangement, the spiral slide 22 provides space for hydraulic oil storage, and the amount of gas stored in the spiral slide 22 can be accurately controlled by adjusting the amount of hydraulic oil, thereby flexibly adjusting the pressure reduction intensity to meet the pressure reduction requirements under different working conditions and improve the adaptability of the device.

[0034] As a further implementation of the present scheme, the diameter of the base 23 is 1.3 times the diameter of the extended spiral cylinder 24, and a spacing for mounting the blocking cover 4 is provided between the right end of the extended spiral cylinder 24 and the right end of the base 23. Through the above arrangement, the reasonable diameter ratio ensures the adaptation of hydraulic oil storage and gas buffer space, and the reserved mounting spacing makes the blocking cover 4 convenient to assemble and disassemble, providing convenience for pressure reduction intensity adjustment operation and improving the use flexibility.

[0035] As a further implementation of the present scheme, the outer side of the extended spiral cylinder 24 is provided with a thread, and the inner side of the blocking cover 4 close to the left end is provided with a threaded hole. The blocking cover 4 is spirally installed on the outer side of the extended spiral cylinder 24 through the threaded hole. The left end of the blocking cover 4 is in contact with the first rubber sealing ring 25. Through the above arrangement, the threaded connection makes the blocking cover 4 fixed and stable, and it is convenient to accurately adjust the position. The contact design of the blocking cover 4 and the first rubber sealing ring 25 can reliably seal the internal space of the spiral slide 22, ensuring that the gas damping effect stably plays a role, and avoiding the influence of gas leakage on the pressure reduction effect during pressure relief;

[0036] As a further implementation of the present scheme, the inner side of the blocking ring 29 is a hollow structure, and the blocking ring 29 is located at the upper end of the pressure relief inlet 28. Through the above arrangement, the hollow structure of the blocking ring 29 provides a channel for fluid flow, and at the same time, the blocking ring 29 prevents the spiral rod 31 from deviating from the inside of the spiral slide 22. The blocking ring 29 is arranged at the upper end of the pressure relief inlet 28, which can prevent the spiral rod 31 from entering the inside of the pressure relief inlet 28 and causing jamming;

[0037] As a further implementation of the present scheme, the shape of the spiral rod 31 is a spiral structure, and the spiral rod 31 is embedded and installed in the inside of the spiral slide 22. The shape of the spiral rod 31 matches the shape of the spiral slide 22. Through the above arrangement, the spiral structure makes the spiral rod 31 slide stably, and the buffer medium impact is more stable. The shape matching ensures smooth sliding without jamming. The sealing effect of the third rubber sealing ring 32 avoids medium leakage, and at the same time, enhances the gas compression effect, and improves the reliability of pressure reduction protection.

[0038] Workflow: in use, the first flange 5 front end with pipe fixed, wear-resistant ball valve body 1 rear end of the second flange and pipe fixed, medium through the front end of the pipe into the flow pipe 21 inside, after wear-resistant ball valve body 1 open, will be through the back, when wear-resistant ball valve body 1 closed or closed in the way, the medium impact under the ball valve inside has higher pressure, the ball valve inside medium will pass through the pressure relief inlet 28 into the spiral slide 22 inside, the spiral rod 31 is located close to the rear end of the blocking ring 29, through the sealing cover 4 and the first rubber sealing ring 25 close, the spiral rod 31 front spiral slide 22 inside space is sealed, the distance of this spiral slide 22 is the pressure relief interval for medium, after the medium enters the spiral slide 22 inside, due to the third rubber sealing ring 32 to the spiral rod 31 and flow pipe 21 sealing, the spiral rod 31 is pressed to spiral track sliding in the spiral slide 22 inside, the spiral rod 31 to the spiral rod 31 front end of the spiral slide 22 inside air extrusion, thereby through the gas buffer effect, realize the effect of ball valve internal pressure relief, thereby play the effect of ball valve protection, when the ball valve internal pressure returns to normal, the spiral rod 31 front end of the spiral slide 22 inside gas pressure is higher, through the gas pressure to make the spiral rod 31 rear spiral track displacement, prepare for pressure relief again;

[0039] When adjusting the pressure relief intensity, the sealing cover 4 is separated from the extension cylinder 24 by rotating the sealing cover 4, the hydraulic oil is filled in the filling port 27 through the needle tube or the water pump, the filling amount of the hydraulic oil indirectly affects the damping force by occupying the gas space, the more the hydraulic oil is filled, the less the gas storage amount in the spiral slide 22 is, because the gas compression space is limited, the spiral rod 31 is compressed after moving a small distance, a large gas damping force is quickly generated, so that the pressure relief effect of the ball valve is smaller, when the amount of gas is more and the amount of hydraulic oil is less, the spiral rod 31 moves a large distance after a large gas damping force is generated, and the pressure relief effect of the ball valve is stronger.

[0040] According to the above principle, when the device protects the wear-resistant ball valve, the gas damping buffers the impact force of the medium, and the distribution of the gas track is a spiral structure, which significantly reduces the space occupation and the probability of collision with the external structure, and improves the safety and stability in use.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A wear ball valve with reduced pressure safeguard structure comprising a wear ball valve body (1), characterized in that: The wear-resistant ball valve body (1) front end fixedly connected with connecting pipe (2), the connecting pipe (2) inside installation has buffer passive assembly (3), the connecting pipe (2) right end installation has plugging cover (4); The connecting pipe (2) includes flow pipe (21), the flow pipe (21) inside is provided with spiral slide (22), the flow pipe (21) right side fixedly connected with pedestal (23), the pedestal (23) right end fixedly connected with extension screw cylinder (24) and first rubber sealing ring (25), the first rubber sealing ring (25) is located in the periphery of extension screw cylinder (24), the flow pipe (21) is close to the rear end of spiral slide (22) and is provided with pressure relief inlet (28) that communicates with spiral slide (22), the flow pipe (21) is provided with spiral slide (22) and is fixedly connected with the stop ring (29) for limiting at both ends; The buffer passive assembly (3) includes spiral rod (31), the spiral rod (31) left and right ends are fixedly connected with third rubber sealing ring (32).

2. A wear ball valve with a pressure relief guard according to claim 1, characterized in that: The flow pipe (21) rear end is fixedly connected with the front end of wear-resistant ball valve body (1), the flow pipe (21) inside communicates with the inside of wear-resistant ball valve body (1), the flow pipe (21) front end fixedly connected with first flange plate (5).

3. A wear ball valve with a pressure relief guard structure according to claim 1, characterized in that: The inside of pedestal (23) and the inside of extension screw cylinder (24) are provided with liquid filling port (27), the inside of liquid filling port (27) is fixedly connected with second rubber sealing ring (26), the liquid filling port (27) communicates with spiral slide (22).

4. A wear ball valve with a pressure relief guard in accordance with claim 1, characterized in that: The diameter of the base (23) is 1.3 times the diameter of the extension screw cylinder (24), the right end of the extension screw cylinder (24) and the right end of the base (23) are provided with a spacing for installing the plugging cover (4).

5. A wear ball valve with a pressure relief guard in accordance with claim 1, characterized in that: The outside of the extension screw cylinder (24) is provided with a thread, the inside of the plugging cover (4) close to the left end is provided with a threaded hole, the plugging cover (4) is screw mounted on the outside of the extension screw cylinder (24) through the threaded hole, the left end of the plugging cover (4) is attached to the first rubber sealing ring (25).

6. A wear ball valve with a pressure relief guard in accordance with claim 1, characterized in that: The inside of the stop ring (29) is a hollow structure, the stop ring (29) is located at the upper end of the pressure relief inlet (28).

7. A wear ball valve with a pressure relief guard in accordance with claim 1, characterized in that: The shape of the spiral rod (31) is a spiral structure, the spiral rod (31) is embedded in the inside of the spiral slide (22), the shape of the spiral rod (31) matches the shape of the spiral slide (22).

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