Self-locking throttling stop valve

Abstract

The utility model discloses a self-locking throttling stop valve, and relates to the field of stop valves. The self-locking type throttling stop valve comprises a valve body unit and a valve deck unit arranged above the valve body unit, the valve deck unit is connected with a self-locking unit, the valve deck unit comprises a valve deck body and a valve rod, the valve rod is in threaded connection with the interior of the valve deck body, and the self-locking unit comprises an installation box body, a fixed rack and a movable tooth block. The mounting box body is fixedly mounted on the outer side of the valve cover main body, the fixed rack is fixedly mounted on the inner wall of the mounting box body, the movable tooth block is in meshed connection with the fixed rack, and an elastic piece is arranged between the other end of the movable tooth block and the valve rod. According to the self-locking type throttling stop valve, through meshing of the movable tooth block and the fixed rack and the action of the elastic piece, the valve rod can be effectively prevented from automatically rotating, and the stability of the valve in the opening or closing state is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stop valve, concretely is self locking throttling stop valve. BACKGROUND

[0002] In the field of modern industrial production and fluid control, valves, as indispensable key components in pipeline systems, bear important functions such as regulating fluid flow, controlling medium flow direction, and realizing system opening and closing. Throttling stop valves, as a common type of valve, are widely used in many industries such as petroleum, chemical industry, power, metallurgy, etc.

[0003] Traditional throttling stop valves lack effective self-locking mechanisms. After the valve is opened or closed, the valve stem is easily affected by external vibrations, fluid impacts, and other factors, causing the valve to rotate by itself, resulting in unstable valve state and affecting the normal operation of the system.

[0004] In order to solve the above problems and improve the performance and reliability of the throttling stop valve, researchers continue to innovate and improve the technology. INVENTION CONTENTS

[0005] To solve the problem of lack of effective self-locking mechanism in traditional throttling stop valves, which causes the valve stem to rotate by itself after the valve is opened or closed, resulting in unstable valve state and affecting the normal operation of the system, the utility model provides a self-locking throttling stop valve.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme: a self-locking throttling stop valve, comprising a valve body unit and a valve cover unit arranged above the valve body unit, the valve cover unit is connected with a self-locking unit, the valve cover unit comprises:

[0007] a valve cover body;

[0008] a valve stem threadedly connected inside the valve cover body, with the bottom end of the valve stem extending towards the inside of the valve body unit;

[0009] The self-locking unit comprises:

[0010] a mounting box fixedly installed on the outside of the valve cover body;

[0011] a fixed rack fixedly installed on the inner wall of the mounting box;

[0012] a movable rack block meshingly connected with the fixed rack, and an elastic member is arranged between the other end of the movable rack block and the valve stem.

[0013] Preferably, the valve body unit comprises:

[0014] a valve body;

[0015] The valve disc is movably disposed inside the valve body, and the top of the valve disc is rotatably connected to the bottom of the valve stem. The valve stem drives the valve disc to move vertically, thereby opening and closing the valve.

[0016] Preferably, a mounting block is fixedly connected to the bottom of the valve cover body, and the mounting block is fixedly connected to the valve body body by bolts.

[0017] Preferably, a sliding groove is provided between the valve cover body and the mounting box, a movable ring is movably sleeved on the outer side of the valve stem, and a slider is fixedly connected to the outer side of the movable ring. The end of the slider passes through the sliding groove and extends into the interior of the mounting box.

[0018] Preferably, the movable tooth block is slidably disposed inside the slider, and the elastic element is fixedly connected between the end of the movable tooth block and the inner wall of the slider.

[0019] Preferably, two limiting rings are fixedly sleeved on the outer side of the valve stem, and the movable ring is in contact with the two limiting rings.

[0020] Preferably, the movable ring is slidably disposed on the inner wall of the valve cover body.

[0021] This utility model discloses a self-locking throttling valve, which has the following beneficial effects: This self-locking throttling valve, through the meshing of the moving toothed block and the fixed toothed rack, as well as the action of the elastic element, effectively prevents the valve stem from rotating on its own, ensuring the stability of the valve in both open and closed states. The components are tightly connected and rationally arranged; the mounting box is fixed to the outside of the valve cover body, making full use of space and resulting in a more compact overall valve structure. The valve can be opened, closed, and self-locked simply by rotating the valve stem; the operation is simple and easy to understand, facilitating operation and maintenance by staff. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0025] Figure 3 This utility model Figure 2 Enlarged diagram of part A in the image.

[0026] Fig. 1, valve body unit; 11, valve body main body; 12, valve disc; 2, valve cover unit; 21, valve cover main body; 22, valve rod; 23, mounting block; 24, sliding groove; 25, limiting ring; 3, self-locking unit; 31, mounting box; 32, fixed rack; 33, sliding block; 34, moving tooth block; 35, elastic member. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is described clearly and completely, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0028] The self-locking throttling stop valve provided by the embodiments of the present application solves the problem that the conventional throttling stop valve lacks an effective self-locking mechanism, the valve rod is easily rotated by itself due to external vibration, fluid impact and other factors after the valve is opened or closed, the valve state is unstable, and the normal operation of the system is affected.

[0029] Through the meshing of the moving tooth block 34 and the fixed rack 32 and the action of the elastic member 35, the self-rotation of the valve rod 22 can be effectively prevented, and the stability of the valve in the opened or closed state is ensured. The components are connected closely and arranged reasonably, the mounting box 31 is fixed outside the valve cover main body 21, the space is fully utilized, and the overall structure of the valve is more compact. The rotation of the valve rod 22 can realize the opening and closing and self-locking of the valve, the operation is simple and easy to understand, and the staff can operate and maintain conveniently.

[0030] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings in the specification and the specific embodiments.

[0031] The utility model embodiment discloses a self-locking throttling stop valve.

[0032] According to the drawings Figures 1-3 As shown, comprising valve body unit 1 and setting valve cover unit 2 on valve body unit 1, valve cover unit 2 is connected with self-locking unit 3, and valve cover unit 2 includes:

[0033] Valve cover main body 21;

[0034] Valve rod 22 is screw connected in the inside of valve cover main body 21, and the bottom end of valve rod 22 extends to the inside of valve body unit 1;

[0035] Self-locking unit 3 includes:

[0036] The mounting box 31 is fixedly installed on the outer side of the valve cover body 21.

[0037] The fixed rack 32 is fixedly installed on the inner wall of the mounting box 31.

[0038] The movable rack 34 is engaged with the fixed rack 32, and the other end of the movable rack 34 is provided with an elastic element 35 between the valve rod 22.

[0039] The mounting box 31 is fixedly installed on the outer side of the valve cover body 21, and provides a mounting space for other components of the self-locking unit 3. The fixed rack 32 is fixedly installed on the inner wall of the mounting box 31, and is part of the self-locking structure. The movable rack 34 is slidably arranged in the inner part of the sliding block 33, and is engaged with the fixed rack 32.

[0040] Further, the valve body unit 1 comprises:

[0041] The valve body body 11;

[0042] The valve disc 12 is movably arranged in the inner part of the valve body body 11, and the top of the valve disc 12 is rotatably connected with the bottom end of the valve rod 22. The valve rod 22 drives the valve disc 12 to move vertically, thereby realizing the opening and closing of the valve.

[0043] Further, the bottom of the valve cover body 21 is fixedly connected with the mounting block 23, and the mounting block 23 is fixedly connected with the valve body body 11 through bolts.

[0044] In particular, a sliding groove 24 is formed between the valve cover body 21 and the mounting box 31. An activity ring is movably arranged on the outer side of the valve rod 22, and the outer side of the activity ring is fixedly connected with the sliding block 33. The end of the sliding block 33 passes through the sliding groove 24 and extends into the inner part of the mounting box 31.

[0045] Further, the movable rack 34 is slidably arranged in the inner part of the sliding block 33, and the elastic element 35 is fixedly connected between the end of the movable rack 34 and the inner wall of the sliding block 33.

[0046] The elastic element 35 is fixedly connected between the end of the movable rack 34 and the inner wall of the sliding block 33, and provides an elastic force for the movable rack 34, so that the movable rack 34 can stably engage with the fixed rack 32, thereby ensuring the reliability of the self-locking.

[0047] Further, two limiting rings 25 are fixedly arranged on the outer side of the valve rod 22, and the activity ring is in contact with the two limiting rings 25.

[0048] Further, the activity ring is slidably arranged on the inner wall of the valve cover body 21.

[0049] The limiting ring 25 is fixedly sleeved outside the valve rod 22, the movable ring is attached to the two limiting rings 25, and the movable ring is limited in position, preventing unnecessary movement of the movable ring on the valve rod 22. The movable ring is slidably arranged on the inner wall of the valve cover body 21, and the outer side is fixedly connected with the sliding block 33, the end of the sliding block 33 passes through the sliding groove 24 and extends towards the inside of the mounting box 31, realizing linkage between the movable ring and the self-locking unit 3.

[0050] When it is necessary to open or close the valve, the valve rod 22 is rotated, and since the valve rod 22 is threadedly connected with the valve cover body 21, the valve rod 22 moves along the axial direction. The movement of the valve rod 22 drives the valve flap 12 to move vertically, thereby realizing opening and closing of the valve. Meanwhile, the movement of the valve rod 22 also drives the movable ring to slide on the inner wall of the valve cover body 21, and the movable ring drives the sliding block 33 to move in the sliding groove 24. The movable tooth block 34 in the sliding block 33 is engaged with the fixed rack 32 under the action of the elastic member 35, and when the valve rod 22 is rotated to the appropriate position, the engagement state of the movable tooth block 34 and the fixed rack 32 can prevent the valve rod 22 from rotating by itself under the action of no external force, thereby realizing the self-locking function of the valve.

[0051] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A self-locking throttling valve, comprising a valve body unit (1) and a valve cover unit (2) disposed above the valve body unit (1), characterized in that, The valve cover unit (2) is connected to a self-locking unit (3), and the valve cover unit (2) includes: Valve cover body (21); The valve stem (22) is threaded inside the valve cover body (21), and the bottom end of the valve stem (22) extends into the valve body unit (1); The self-locking unit (3) includes: The mounting box (31) is fixedly mounted on the outside of the valve cover body (21); A fixed rack (32) is fixedly installed on the inner wall of the mounting box (31); The movable toothed block (34) is engaged with the fixed toothed rack (32), and an elastic element (35) is provided between the other end of the movable toothed block (34) and the valve stem (22).

2. The self-locking throttling valve according to claim 1, characterized in that, The valve body unit (1) includes: Valve body (11); The valve disc (12) is movably disposed inside the valve body (11), and the top of the valve disc (12) is rotatably connected to the bottom end of the valve stem (22). The valve stem (22) drives the valve disc (12) to move vertically, thereby realizing the opening and closing of the valve.

3. The self-locking throttling valve according to claim 2, characterized in that, The bottom of the valve cover body (21) is fixedly connected to a mounting block (23), and the mounting block (23) is fixedly connected to the valve body body (11) by bolts.

4. The self-locking throttling valve according to claim 1, characterized in that, A groove (24) is provided between the valve cover body (21) and the mounting box (31). A movable ring is movably sleeved on the outside of the valve stem (22), and a slider (33) is fixedly connected to the outside of the movable ring. The end of the slider (33) passes through the groove (24) and extends into the interior of the mounting box (31).

5. The self-locking throttling valve according to claim 4, characterized in that, The movable tooth block (34) is slidably disposed inside the slider (33), and the elastic element (35) is fixedly connected between the end of the movable tooth block (34) and the inner wall of the slider (33).

6. The self-locking throttling valve according to claim 4, characterized in that, Two limiting rings (25) are fixedly sleeved on the outer side of the valve stem (22), and the movable ring is in contact with the two limiting rings (25).

7. The self-locking throttling valve according to claim 4, characterized in that, The movable ring is slidably disposed on the inner wall of the valve cover body (21).

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