Pipeline plug valve

Abstract

The utility model discloses a pipeline plug valve, and relates to the technical field of valves. The pipeline plug valve comprises a valve seat, a valve body is assembled at the top of the valve seat, and a plug body is assembled at the top of the valve body; a protection assembly is arranged on the side face of the valve body and comprises a first air pressure bin, an elastic air bag is fixedly connected to one end of the first air pressure bin, a clamping rod is slidably connected to the other end of the first air pressure bin, a torsional spring rod is rotatably connected to the side face of the valve seat, and a clamping groove is formed in the outer side of the torsional spring rod. And the outer side of the torsional spring rod is fixedly connected with a transmission rod. According to the pipeline plug valve, under the condition that the flow of liquid in the valve body is too large, the first air pressure bin, the elastic air bag, the clamping rod, the torsional spring rod, the clamping groove and the transmission rod are matched, so that the protective pads on the two sides rotate to the sealing position between the plug body and the valve body, and the sealing effect of the valve body under the condition is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a pipeline plug valve. Background Technique

[0002] A plug valve is a rotary valve with a closing member or a plunger shape. By rotating 90 degrees, the passage opening on the plug is communicated with or separated from the passage opening on the valve body to achieve opening or closing of a valve. The shape of its plug can be cylindrical or conical. In a cylindrical plug, the passage is generally rectangular; while in a conical plug, the passage is trapezoidal. These shapes make the structure of the plug valve light.

[0003] The pipeline plug valve is disclosed in the Chinese patent CN103115161B authorized and announced on September 17, 2014. Among them, it includes a valve body, a valve stem and a conical plug body. An annular convex ring is provided on the valve stem. Two chutes with a circumferential interval of 180° are provided on the convex ring. The bottom of the chute is in an inclined transition with the end face of the convex ring. Grooves are provided on the valve body on both sides of the valve stem. In the above application document, the function that the plug first adheres to, then disengages, rotates and finally adheres to and seals during the opening and closing process of the valve is realized. However, when the internal liquid flow rate is too large, the sealing effect of the valve body may be affected. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a pipeline plug valve, which solves the problems put forward in the above background technique. To achieve the above purpose, the utility model is realized through the following technical solutions: A pipeline plug valve includes a valve seat, a valve body is assembled on the top of the valve seat, and a plug body is assembled on the top of the valve body;

[0005] A protection component is arranged on the side of the valve body. The protection component includes a first air pressure chamber. One end of the first air pressure chamber is fixedly connected with an elastic airbag. The other end of the first air pressure chamber is slidably connected with a clamping rod. A torsion spring rod is rotatably connected to the side of the valve seat. A clamping groove is opened on the outer side of the torsion spring rod. A transmission rod is fixedly connected to the outer side of the torsion spring rod. A protection pad is fixedly connected to the side of the transmission rod.

[0006] Preferably, the first air pressure chamber penetrates through the valve body, and the first air pressure chamber is fixedly connected with the valve body.

[0007] Preferably, the clamping rod is located in the clamping groove, and the cross-sectional shape of the clamping rod is adapted to the cross-sectional shape of the clamping groove.

[0008] Preferably, a warning component is provided on the side of the valve seat. The warning component includes a second air pressure chamber. A pressing plate is slidably connected to the side of the second air pressure chamber. An alarm body is fixedly connected to the side of the valve seat. An alarm switch is assembled on the side of the alarm body.

[0009] Preferably, the second air pressure chamber is located on the side of the first air pressure chamber. The second air pressure chamber is fixedly connected and communicated with the first air pressure chamber.

[0010] Preferably, the pressing plate is located on the side of the alarm switch.

[0011] The utility model provides a pipeline plug valve, which has the following beneficial effects:

[0012] (1) For this pipeline plug valve, when the liquid flow rate inside the valve body is too large, with the cooperation of the first air pressure chamber, the elastic airbag, the clamping rod, the torsion spring rod, the clamping groove and the transmission rod, the protective pads on both sides are rotated to the sealing position between the plug body and the valve body, improving the sealing effect of the valve body in this case.

[0013] (2) For this pipeline plug valve, when the pressure in the first air pressure chamber increases, the pressure in the second air pressure chamber increases synchronously, driving the pressing plate to move. The pressing plate thus presses the alarm switch, and the alarm body can be activated to give an alarm, warning the nearby staff that the valve body is in an abnormal state, making the device easier to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the three-dimensional structure diagram of the overall appearance of the utility model;

[0015] Figure 2 is the three-dimensional sectional structure diagram of the whole of the utility model;

[0016] Figure 3 is the three-dimensional structure diagram of the protection component of the utility model;

[0017] Figure 4 is the three-dimensional structure diagram of the warning component of the utility model.

[0018] In the figure:

[0019] 100, valve seat; 200, valve body; 300, plug body;

[0020] 400, protection component; 401, first air pressure chamber; 402, elastic airbag; 403, clamping rod; 404, torsion spring rod; 405, clamping groove; 406, transmission rod; 407, protection pad;

[0021] 500. Warning component; 501. Second air pressure chamber; 502. Pressing plate; 503. Alarm body; 504. Alarm switch. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Embodiment 1

[0024] Please refer to Figures 1 - 4 , a pipeline cock valve, including a valve seat 100, a valve body 200 is assembled on the top of the valve seat 100, and a plug body 300 is assembled on the top of the valve body 200;

[0025] A protection component 400 is arranged on the side of the valve body 200. The protection component 400 includes a first air pressure chamber 401. The first air pressure chamber 401 penetrates through the valve body 200, and the first air pressure chamber 401 is fixedly connected to the valve body 200. One end of the first air pressure chamber 401 is fixedly connected with an elastic airbag 402. When the liquid flow rate inside the valve body 200 is too large, the elastic airbag 402 is immediately squeezed, and the gas stored in the elastic airbag 402 is immediately squeezed into the first air pressure chamber 401 fixedly connected to it, so that the pressure in the first air pressure chamber 401 increases. The other end of the first air pressure chamber 401 is slidably connected with a clamping rod 403. When the pressure in the first air pressure chamber 401 increases, it drives the clamping rod 403 slidably connected to the first air pressure chamber 401 to move. A torsion spring rod 404 is rotatably connected to the side of the valve seat 100. A clamping groove 405 is opened on the outer side of the torsion spring rod 404. The clamping rod 403 is located in the clamping groove 405, and the cross-sectional shape of the clamping rod 403 is adapted to the cross-sectional shape of the clamping groove 405. A transmission rod 406 is fixedly connected to the outer side of the torsion spring rod 404. A protection pad 407 is fixedly connected to the side of the transmission rod 406. When the clamping rod 403 is removed from the clamping groove 405 on the torsion spring rod 404, the torsion spring rod 404 loses its restriction and starts to rotate under its own action. The torsion spring rod 404 drives the transmission rod 406 fixedly connected to it to rotate synchronously, so that the transmission rod 406 drives the protection pad 407 fixedly connected to it to rotate. The protection pads 407 on both sides rotate to the sealing position between the plug body 300 and the valve body 200, improving the sealing effect of the valve body 200 in this case.

[0026] During use, when the liquid flow rate inside the valve body 200 is too large, the elastic airbag 402 is immediately squeezed, and the gas stored in the elastic airbag 402 is then squeezed into the first air pressure chamber 401 fixedly connected thereto, causing the pressure in the first air pressure chamber 401 to increase, driving the clamping rod 403 slidably connected to the first air pressure chamber 401 to move. The clamping rod 403 then moves out of the card slot 405 on the torsion spring rod 404, so that the torsion spring rod 404 loses its restriction and begins to rotate under its own action. The torsion spring rod 404 drives the transmission rod 406 fixedly connected thereto to rotate synchronously, causing the transmission rod 406 to drive the protective pad 407 fixedly connected thereto to rotate. The two protective pads 407 rotate to the sealing position between the plug body 300 and the valve body 200.

[0027] Embodiment 2

[0028] Please refer to Figures 1 - 4 , on the basis of Embodiment 1, a warning assembly 500 is provided on the side of the valve seat 100. The warning assembly 500 includes a second air pressure chamber 501, which is located on the side of the first air pressure chamber 401. The second air pressure chamber 501 is fixedly connected and communicated with the first air pressure chamber 401. When the pressure in the first air pressure chamber 401 increases, the pressure in the second air pressure chamber 501 fixedly connected and communicated with the first air pressure chamber 401 increases synchronously. A pressing plate 502 is slidably connected to the side of the second air pressure chamber 501. An alarm body 503 is fixedly connected to the side of the valve seat 100, and an alarm switch 504 is assembled on the side of the alarm body 503. The pressing plate 502 is located on the side of the alarm switch 504. When the pressure in the second air pressure chamber 501 increases, it drives the pressing plate 502 slidably connected to the second air pressure chamber 501 to move, and the pressing plate 502 thus presses the alarm switch 504, and the alarm body 503 can be started to give an alarm to warn the nearby staff that the valve body 200 is in an abnormal state, making the device easier to use.

[0029] During use, on the basis of Embodiment 1, when the pressure in the first air pressure chamber 401 increases, the pressure in the second air pressure chamber 501 fixedly connected and communicated with the first air pressure chamber 401 increases synchronously, driving the pressing plate 502 slidably connected to the second air pressure chamber 501 to move, and the pressing plate 502 thus presses the alarm switch 504, and the alarm body 503 can be started to give an alarm.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A pipeline cock valve, comprising a valve seat (100), a valve body (200) is assembled on the top of the valve seat (100), and a plug body (300) is assembled on the top of the valve body (200); It is characterized in that: A protection assembly (400) is arranged on the side of the valve body (200). The protection assembly (400) includes a first air pressure chamber (401). One end of the first air pressure chamber (401) is fixedly connected with an elastic airbag (402). The other end of the first air pressure chamber (401) is slidably connected with a clamping rod (403). A torsion spring rod (404) is rotatably connected to the side of the valve seat (100). A clamping groove (405) is formed on the outer side of the torsion spring rod (404). A transmission rod (406) is fixedly connected to the outer side of the torsion spring rod (404). A protection pad (407) is fixedly connected to the side of the transmission rod (406).

2. The pipeline cock valve according to claim 1, characterized in that: The first air pressure chamber (401) penetrates through the valve body (200), and the first air pressure chamber (401) is fixedly connected to the valve body (200).

3. The pipeline cock valve according to claim 2, characterized in that: The clamping rod (403) is located in the clamping groove (405), and the cross-sectional shape of the clamping rod (403) is adapted to the cross-sectional shape of the clamping groove (405).

4. The pipeline cock valve according to claim 3, characterized in that: A warning assembly (500) is arranged on the side of the valve seat (100). The warning assembly (500) includes a second air pressure chamber (501). A pressing plate (502) is slidably connected to the side of the second air pressure chamber (501). An alarm body (503) is fixedly connected to the side of the valve seat (100). An alarm switch (504) is assembled on the side of the alarm body (503).

5. The pipeline cock valve according to claim 4, characterized in that: The second air pressure chamber (501) is located on the side of the first air pressure chamber (401), and the second air pressure chamber (501) is fixedly connected and communicated with the first air pressure chamber (401).

6. The pipeline cock valve according to claim 5, wherein: The pressing plate (502) is located on the side of the alarm switch (504).

Images