Impact reducing stop valve

Abstract

The utility model discloses an impact reduction stop valve, which relates to the technical field of valves, and comprises a valve body and a valve cover arranged at the upper end of the valve body, a valve seat is arranged in the valve body, a valve rod is in threaded connection with the interior of the valve cover, a valve core is arranged at the lower end of the valve rod, and a buffer component used for reducing fluid impact is arranged at the lower end of the valve core. Impact force brought by fluid is relieved through the cooperation of the buffer plate at the bottom of the valve element and the spring, the impact force is further dispersed through the buffer plate with the arc-shaped bottom face, the buffer effect is improved, meanwhile, outward radial force is generated when the fluid makes contact with the buffer plate through the conical valve element, and the fluid is prevented from falling off. According to the valve, impact force brought by fluid can be reduced, damage to the valve element due to the fact that the impact force of the fluid is too large is effectively prevented, the service life of the valve element is further prolonged, in addition, the conical valve element can reduce resistance in the flowing process of the fluid, and the working efficiency of the valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a shock-reducing stop valve. Background Art

[0002] The stop valve is a common type of valve used to control the opening and closing of fluid media. It usually works in a fully open or fully closed mode, and the flow or cut-off of the medium is achieved by lifting or lowering the valve core.

[0003] The main components of the stop valve include the valve body, valve core, valve stem, valve seat, etc. Its working principle is to rotate the valve stem to make the valve gate move up and down, thereby changing the opening degree of the valve port. When the valve core is lifted, the fluid can pass through the valve body smoothly; when the valve core is lowered, the valve port is completely cut off, achieving the purpose of cutting off the flow of the medium.

[0004] When the valve core of the current stop valve is lifted, the fluid directly hits the valve core, which will generate a large impact force, easily causing damage to the valve core, resulting in a reduction in the service life of the valve core, and in severe cases, causing fluid leakage. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a shock-reducing stop valve to solve the problem in the background technology that when the valve core is lifted, the fluid directly hits the valve core, which will generate a large impact force and easily cause damage to the valve core.

[0006] Based on the above purpose, the utility model provides the following technical solutions: a shock-reducing stop valve, comprising a valve body and a valve cover arranged at the upper end thereof, wherein a valve seat is arranged inside the valve body, a valve stem is threadedly connected to the inner part of the valve cover, a valve core is arranged at the lower end of the valve stem, and a buffer component for reducing fluid shock is arranged at the lower end of the valve core;

[0007] The buffer assembly comprises a buffer plate slidably connected to the lower end of the valve core, and a spring is arranged at the upper end of the buffer plate, and the spring is connected to the valve core.

[0008] Preferably, a built-in cavity is opened inside the valve core, the buffer plate is slidably connected to the built-in cavity, and the spring is located inside the built-in cavity.

[0009] Preferably, a slide groove communicating with the built-in cavity is symmetrically provided inside the valve core, a connecting block is fixedly provided on the upper end of the buffer plate, and sliding blocks are symmetrically provided on the outer side of the connecting block, and the sliding blocks are slidably connected to the inside of the slide groove.

[0010] Preferably, a water inlet channel for water to enter and a water outlet channel for water to discharge are formed between the valve seat and the inner wall of the valve body, a valve port is formed at the upper end of the valve seat, and the valve core is adapted to the valve port.

[0011] Preferably, a limiting ring for blocking the buffer plate is provided inside the valve port.

[0012] Preferably, a hand wheel is provided at the upper end of the valve stem, and the hand wheel is located on the top of the valve cover.

[0013] Preferably, the buffer plate is a component made of cast iron, and the valve core is conical.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model provides a shock-reducing stop valve, which reduces the impact force brought by the fluid through the cooperation of the buffer plate at the bottom of the valve core and the spring, and further disperses the impact force through the buffer plate with an arc-shaped bottom surface, thereby improving its buffering effect. At the same time, the tapered valve core generates an outward radial force when the fluid contacts it, which helps to reduce the impact force brought by the fluid, effectively prevents damage to the valve core due to excessive fluid impact force, and further increases its service life. In addition, the tapered valve core can also reduce the resistance during the flow of fluid and improve the working efficiency of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the valve core, valve stem and hand wheel structure of the utility model;

[0019] Figure 3 This is a cross-sectional view of the valve body of the utility model;

[0020] Figure 4 For the utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the working state structure of the valve core and valve stem of the utility model;

[0022] Figure 6 For the utility model Figure 5 Enlarged view of point B in the middle.

[0023] The numbers in the figure are: 1, valve body; 11, valve seat; 111, valve port; 112, limit ring; 12, water inlet channel; 13, water outlet channel; 2, valve cover; 3, hand wheel; 31, valve stem; 4, valve core; 41, buffer assembly; 411, buffer plate; 412, spring; 413, connecting block; 414, slider; 42, built-in cavity; 43, slide groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] Combination Figure 1-Figure 6 The utility model is a shock-reducing stop valve, comprising a valve body 1 and a valve cover 2 arranged at the upper end thereof, wherein a valve seat 11 is arranged inside the valve body 1, a valve stem 31 is threadedly connected to the inner part of the valve cover 2, a valve core 4 is arranged at the lower end of the valve stem 31, and a buffer component 41 for reducing fluid shock is arranged at the lower end of the valve core 4;

[0027] The buffer assembly 41 includes a buffer plate 411 slidably connected to the lower end of the valve core 4 . A spring 412 is disposed at the upper end of the buffer plate 411 . The spring 412 is connected to the valve core 4 .

[0028] Specifically, since the valve stem 31 is threadedly connected to the valve cover 2, when the valve stem 31 is rotated, it drives the valve core 4 to move away from the valve seat 11, so that the fluid can flow smoothly inside the valve body 1. When the valve core 4 leaves the valve seat 11, the fluid impacts the buffer plate 411, so that the buffer plate 411 moves toward the inside of the valve core 4. The buffer plate 411 squeezes the spring 412, and the elasticity of the spring 412 reduces the impact force, which can effectively prevent the fluid from directly impacting the valve core 4 and causing damage to the valve core 4, effectively increase the service life of the valve core 4, and avoid leakage. At the same time (such as Figure 2As shown), the bottom surface of the buffer plate 411 is arc-shaped, which can further disperse the impact force and improve the buffering effect.

[0029] The utility model is further described below in conjunction with embodiments.

[0030] Combination Figure 4 A built-in cavity 42 is provided inside the valve core 4 , the buffer plate 411 is slidably connected to the built-in cavity 42 , and the spring 412 is located inside the built-in cavity 42 .

[0031] In this embodiment, when the fluid impacts the buffer plate 411, the buffer plate 411 moves toward the inside of the built-in cavity 42 and squeezes the spring 412. The elasticity of the spring 412 has a buffering effect, which reduces the direct impact of the fluid on the valve core 4 and avoids damage due to excessive impact force.

[0032] Combination Figure 4 A slide groove 43 communicating with the built-in cavity 42 is symmetrically provided inside the valve core 4, a connecting block 413 is fixedly provided on the upper end of the buffer plate 411, and a slider 414 is symmetrically provided on the outer side of the connecting block 413, and the slider 414 is slidably connected to the inside of the slide groove 43.

[0033] In this embodiment, when the buffer plate 411 moves toward the interior of the built-in cavity 42, the buffer plate 411 drives the connecting block 413 to move, and the connecting block 413 drives the slider 414 to slide along the interior of the slide groove 43. When the valve core 4 is completely away from the valve seat 11 (such as Figure 5 and Figure 6 As shown), the buffer plate 411 returns to the initial position through the rebound of the spring 412, and the cooperation of the slider 414 and the slide groove 43 can prevent the buffer plate 411 from escaping from the built-in cavity 42 when the spring 412 rebounds, and the cooperation of the slider 414 and the slide groove 43 can make the buffer plate 411 rotate synchronously with the valve core 4 when the valve core 4 rotates.

[0034] Combination Figure 3 A water inlet channel 12 for water to enter and a water outlet channel 13 for water to discharge are formed between the valve seat 11 and the inner wall of the valve body 1. A valve port 111 is opened at the upper end of the valve seat 11, and the valve core 4 is adapted to the valve port 111.

[0035] In this embodiment, the fluid enters the interior of the valve body 1 through the water inlet channel 12. When the valve core 4 is separated from the valve seat 11, the fluid enters the water inlet channel 12 through the valve port 111, thereby realizing the fluid circulation inside the valve body 1. Conversely, the valve port 111 is closed and the fluid no longer circulates inside the water outlet channel 13.

[0036] Combination Figure 5 A limiting ring 112 is provided inside the valve port 111 for blocking the buffer plate 411 .

[0037] In this embodiment, when the valve stem 31 is rotated to make the valve core 4 contact the valve port 111, the lower end of the buffer plate 411 contacts the limit ring 112, so that the buffer plate 411 can be squeezed (such as Figure 4 As shown), the valve core 4 can be better sealed with the valve port 111.

[0038] Combination Figure 2 A hand wheel 3 is provided at the upper end of the valve stem 31 , and the hand wheel 3 is located on the top of the valve cover 2 .

[0039] In this embodiment, the hand wheel 3 is rotated to drive the valve stem 31 to rotate, thereby driving the valve core 4 to move up and down, so that the valve core 4 can open and close the valve port 111.

[0040] Combination Figure 2 and Figure 4 The buffer plate 411 is a component made of cast iron, and the valve core 4 is conical.

[0041] In this embodiment, the buffer plate 411 made of cast iron material can have good strength and hardness, can withstand large impact forces, and is not easy to deform or break, further enhancing its buffering effect and effectively reducing the impact force brought by the fluid. Since the valve core 4 is conical, when the fluid contacts the outer wall of the valve core 4, it can generate an outward radial force, which can increase the stability of the valve core 4 and help to reduce the impact force. In addition, the conical valve core 4 can also reduce the resistance during the flow of fluid and improve the working efficiency of the valve.

[0042] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0043] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A damping stop valve, comprising a valve body (1) and a valve cover (2) arranged at the upper end thereof, characterized in that: The valve body (1) is provided with a valve seat (11) inside, the valve cover (2) is internally threadedly connected with a valve stem (31), the lower end of the valve stem (31) is provided with a valve core (4), and the lower end of the valve core (4) is provided with a buffer component (41) for mitigating fluid impact; The buffer assembly (41) comprises a buffer plate (411) slidably connected to the lower end of the valve core (4); a spring (412) is provided at the upper end of the buffer plate (411); and the spring (412) is connected to the valve core (4).

2. The impact reduction stop valve according to claim 1, characterized in that: The valve core (4) is provided with a built-in cavity (42) inside, the buffer plate (411) is slidably connected to the built-in cavity (42), and the spring (412) is located inside the built-in cavity (42).

3. The impact reduction stop valve according to claim 2, characterized in that: The valve core (4) is symmetrically provided with a slide groove (43) in communication with the built-in cavity (42), the upper end of the buffer plate (411) is fixedly provided with a connecting block (413), the outer side of the connecting block (413) is symmetrically provided with a sliding block (414), and the sliding block (414) is slidably connected to the inside of the slide groove (43).

4. The impact reduction stop valve according to claim 1, characterized in that: A water inlet channel (12) for water to enter and a water outlet channel (13) for water to be discharged are formed between the valve seat (11) and the inner wall of the valve body (1); a valve port (111) is provided at the upper end of the valve seat (11), and the valve core (4) is adapted to the valve port (111).

5. The impact reduction stop valve according to claim 4, characterized in that: A limiting ring (112) for blocking the buffer plate (411) is provided inside the valve port (111).

6. The impact reduction stop valve according to claim 1, characterized in that: A hand wheel (3) is provided at the upper end of the valve stem (31), and the hand wheel (3) is located on the top of the valve cover (2).

7. The impact reduction stop valve according to claim 1, characterized in that: The buffer plate (411) is a component made of cast iron, and the valve core (4) is conical.

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