Dustproof ball valve

Abstract

The utility model discloses a dustproof ball valve, and relates to the field of ball valves. The dustproof ball valve comprises a valve body, connecting flanges are connected to the two sides of the valve body through bolts, a connecting base is fixedly connected to the end face of the top of the valve body, a valve rod is rotationally connected to the inner wall of the connecting base, and the end, located in the valve body, of the valve rod is connected with a ball body; and a sealing unit and an adjusting unit are arranged on the connecting seat. According to the dust-proof ball valve, under the action of a plurality of springs fixedly connected to the bottom of the sealing seat, the sealing seat and the sealing sleeve are attached, dust is prevented from entering the position between the valve rod and the connecting seat, and the situation that the valve rod drives the ball to rotate difficultly is avoided, and by adjusting separation of the sealing seat and the sealing sleeve, the valve rod and the sealing sleeve are rotated to rotate conveniently; and the valve rod rotates to drive the ball body to rotate so as to open and close the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a dust-proof ball valve. Background Art

[0002] The ball of a ball valve is driven by the valve stem and rotates around the axis of the ball valve.

[0003] As various fluid control devices, ball valves are widely used in various industries. In dusty environments such as coal-to-oil industry and slurry production, more ball valves are needed to transmit liquids. The ball valves are directly exposed to the outside world, resulting in dust particles in the ball valve environment. There is a lot of dust at the connection between the valve stem and the ball valve. In a long-term dusty environment, dust enters the ball valve from the gap between the valve stem and the ball valve, causing dust particles to accumulate, which in turn affects the valve stem to drive the ball to rotate, making it difficult or impossible for the valve stem to rotate, which in turn causes the ball valve to be unable to be used normally. Therefore, we propose a dust-proof ball valve. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a dust-proof ball valve, which solves the problem that there are dust particles in the ball valve environment and there is a lot of dust at the connection between the valve stem and the ball valve. In a long-term dusty environment, dust enters the ball valve through the gap between the valve stem and the ball valve, causing dust particles to accumulate, which in turn affects the valve stem from driving the ball to rotate, making the valve stem difficult or impossible to rotate.

[0005] To achieve the above purpose, the utility model is implemented by the following technical solutions: a dust-proof ball valve, including a valve body, both sides of the valve body are connected with connecting flanges by bolts, the top end surface of the valve body is fixedly connected with a connecting seat, the inner wall of the connecting seat is rotatably connected with a valve stem, one end of the valve stem inside the valve body is connected to the ball, and the connecting seat is provided with:

[0006] A sealing unit, the sealing unit comprising a sealing seat slidably connected to an outer peripheral wall of the connecting seat;

[0007] The regulating unit comprises a sealing sleeve fixedly connected to the outer peripheral wall of the valve stem, and the sealing sleeve is in contact with the inner wall of the sealing seat.

[0008] Preferably, the top end surface of the valve stem is fixedly connected with a connecting shaft.

[0009] Preferably, a fixing seat is fixedly connected to the outer wall of the valve body, and a contact seat is fixedly connected to the top end surface of the fixing seat.

[0010] Preferably, a sliding rod is fixedly connected to the top end surface of the contact seat, and the sliding rod is slidably connected to the sealing seat.

[0011] Preferably, a spring is sleeved on the outer peripheral wall of the sliding rod, and two ends of the spring are fixedly connected to the sealing seat and the contact seat respectively.

[0012] Preferably, the outer peripheral wall of the sealing sleeve is rotatably connected to a rotating seat, and a limiting seat is fixedly connected to the outer wall of the rotating seat.

[0013] Preferably, a threaded rod is slidably connected to the inner wall of the limiting seat, and the threaded rod is fixedly connected to the top end surface of the sealing seat.

[0014] Preferably, the outer peripheral wall of the threaded rod is threadedly connected with a nut seat, and the nut seat is fitted with the rotating seat.

[0015] The utility model discloses a dust-proof ball valve, which has the following beneficial effects:

[0016] The dust-proof ball valve, through the action of multiple springs fixedly connected to the bottom of the sealing seat, fits the sealing seat and the sealing sleeve to prevent dust from entering between the valve stem and the connecting seat, which would make it difficult for the valve stem to drive the ball to rotate. By adjusting the separation between the sealing seat and the sealing sleeve, it is convenient to rotate the valve stem and the sealing sleeve, and drive the ball to rotate under the rotation of the valve stem to open and close the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the adjustment unit of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection of the sealing seat of the utility model.

[0021] In the figure: 1. valve body; 101. connecting flange; 2. connecting seat; 201. valve stem; 202. connecting shaft; 3. sealing unit; 301. sealing seat; 302. fixed seat; 303. sliding rod; 304. spring; 305. contact seat; 4. adjusting unit; 401. sealing sleeve; 402. rotating seat; 403. limiting seat; 404. threaded rod; 405. nut seat. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0023] The embodiment of the present application provides a dust-proof ball valve to solve the problem of dust particles existing in the ball valve environment. There is a lot of dust at the connection between the valve stem 201 and the ball valve. In a long-term dusty environment, dust enters the ball valve through the gap between the valve stem 201 and the ball valve, resulting in accumulation of dust particles, which in turn affects the valve stem 201 from driving the ball to rotate, making it difficult or impossible for the valve stem 201 to rotate. Under the action of multiple springs 304 fixedly connected to the bottom of the sealing seat 301, the sealing seat 301 and the sealing sleeve 401 are fitted to prevent dust from entering between the valve stem 201 and the connecting seat 2, making it difficult for the valve stem 201 to drive the ball to rotate. By adjusting the separation of the sealing seat 301 and the sealing sleeve 401, it is convenient to rotate the valve stem 201 and the sealing sleeve 401, so that the ball is driven to rotate under the rotation of the valve stem 201, and the valve body 1 is opened and closed.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] The utility model embodiment discloses a dust-proof ball valve.

[0026] According to the attached Figure 1-3 As shown, it includes a valve body 1, both sides of the valve body 1 are connected with connecting flanges 101 by bolts, the top end surface of the valve body 1 is fixedly connected with a connecting seat 2, the inner wall of the connecting seat 2 is rotatably connected with a valve stem 201, one end of the valve stem 201 inside the valve body 1 is connected with a ball, and the connecting seat 2 is provided with:

[0027] The sealing unit 3 includes a sealing seat 301 slidably connected to the outer peripheral wall of the connecting seat 2. Under the action of multiple springs 304 fixedly connected to the bottom of the sealing seat 301, the sealing seat 301 is fitted with the sealing sleeve 401 to prevent dust from entering between the valve stem 201 and the connecting seat 2, which makes it difficult for the valve stem 201 to drive the ball to rotate;

[0028] The adjusting unit 4 includes a sealing sleeve 401 fixedly connected to the outer peripheral wall of the valve stem 201, and the sealing sleeve 401 is fitted with the inner wall of the sealing seat 301. By adjusting the separation of the sealing seat 301 and the sealing sleeve 401, it is convenient to rotate the valve stem 201 and the sealing sleeve 401, and the ball is driven to rotate under the rotation of the valve stem 201, so as to open and close the valve body 1.

[0029] The top end surface of the valve stem 201 is fixedly connected with a connecting shaft 202 , which is connected to a motor via the connecting shaft 202 , so as to conveniently drive the connecting shaft 202 , the valve stem 201 and the ball to rotate, thereby opening and closing the valve body 1 .

[0030] A fixing seat 302 is fixedly connected to the outer wall of the valve body 1 , and a contact seat 305 is fixedly connected to the top end surface of the fixing seat 302 .

[0031] The top end surface of the contact seat 305 is fixedly connected with a sliding rod 303 , and the sliding rod 303 is slidably connected to the sealing seat 301 . Under the action of the sliding rod 303 , the sliding of the sealing seat 301 on the sliding rod 303 is relatively stable.

[0032] A spring 304 is sleeved on the outer wall of the sliding rod 303, and the two ends of the spring 304 are fixedly connected to the sealing seat 301 and the contact seat 305 respectively. Under the rebound of the spring 304, the sealing seat 301 is pushed to move upward, so that the sealing seat 301 fits with the sealing sleeve 401, ensuring the sealing of the connecting seat 2 and preventing dust from entering the connecting seat 2 and the valve stem 201.

[0033] The outer peripheral wall of the sealing sleeve 401 is rotatably connected to a rotating seat 402 , and the outer wall of the rotating seat 402 is fixedly connected to a limiting seat 403 .

[0034] A threaded rod 404 is slidably connected to the inner wall of the limiting seat 403 , and the threaded rod 404 is fixedly connected to the top end surface of the sealing seat 301 .

[0035] The outer wall of the threaded rod 404 is threadedly connected with a nut seat 405, and the nut seat 405 fits with the rotating seat 402. When it is necessary to separate the sealing seat 301 from the sealing sleeve 401, the nut seat 405 is rotated so that the nut seat 405 rotates along the outer wall of the threaded rod 404, so that the nut seat 405 fits and squeezes the limit seat 403, so that the threaded rod 404 drives the sealing seat 301 to move downward, and the sealing seat 301 compresses the spring 304, so that the sealing seat 301 moves and separates from the sealing sleeve 401, so that the valve stem 201 can drive the ball to rotate.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A dust-proof ball valve, comprising a valve body (1), both sides of the valve body (1) are connected with connecting flanges (101) by bolts, the top end surface of the valve body (1) is fixedly connected with a connecting seat (2), the inner wall of the connecting seat (2) is rotatably connected with a valve stem (201), one end of the valve stem (201) located inside the valve body (1) is connected to the ball, characterized in that: The connecting seat (2) is provided with: A sealing unit (3), the sealing unit (3) comprising a sealing seat (301) slidably connected to the outer peripheral wall of the connecting seat (2); The regulating unit (4) comprises a sealing sleeve (401) fixedly connected to the outer peripheral wall of the valve stem (201), and the sealing sleeve (401) is in contact with the inner wall of the sealing seat (301).

2. A dust-proof ball valve according to claim 1, characterized in that: The top end surface of the valve stem (201) is fixedly connected to a connecting shaft (202).

3. A dust-proof ball valve according to claim 2, characterized in that: A fixing seat (302) is fixedly connected to the outer wall of the valve body (1), and a contact seat (305) is fixedly connected to the top end surface of the fixing seat (302).

4. A dust-proof ball valve according to claim 3, characterized in that: The top end surface of the contact seat (305) is fixedly connected to a sliding rod (303), and the sliding rod (303) is slidably connected to the sealing seat (301).

5. The dust-proof ball valve according to claim 4, characterized in that: A spring (304) is sleeved on the outer peripheral wall of the sliding rod (303), and two ends of the spring (304) are fixedly connected to the sealing seat (301) and the contact seat (305) respectively.

6. The dust-proof ball valve according to claim 1, characterized in that: The outer peripheral wall of the sealing sleeve (401) is rotatably connected to a rotating seat (402), and a limiting seat (403) is fixedly connected to the outer wall of the rotating seat (402).

7. The dust-proof ball valve according to claim 6, characterized in that: A threaded rod (404) is slidably connected to the inner wall of the limiting seat (403), and the threaded rod (404) is fixedly connected to the top end surface of the sealing seat (301).

8. The dust-proof ball valve according to claim 7, characterized in that: The outer peripheral wall of the threaded rod (404) is threadedly connected with a nut seat (405), and the nut seat (405) is in close contact with the rotating seat (402).

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