Packing seal cut-off type control valve

Abstract

The utility model relates to the technical field of control valves, and discloses a packing seal cut-off type control valve which comprises a hollow tubular valve pipe, the wall surface of the valve pipe is fixedly connected with a first pipeline, the wall surface of the valve pipe is further fixedly connected with a second pipeline, the first pipeline is hollow tubular, the second pipeline is also hollow tubular, the first pipeline is communicated with the valve pipe, and the second pipeline is communicated with the valve pipe. The second pipeline is also communicated with the valve pipe, a labor-saving structure is arranged in a cavity of the valve pipe and comprises a moving column and a separation plate, the moving column is slidably connected into the cavity of the valve pipe, the separation plate is rotatably connected into the cavity of the valve pipe, the separation plate can separate the first pipeline from the second pipeline, and the labor-saving structure can separate the interior of the cavity of the valve pipe in a shifting mode. As the labor-saving structure drives the isolation plate to shield the leakage groove when the pressing rod is poked, the first pipeline and the second pipeline which are originally communicated can be separated.

Description

Technical Field

[0001] The utility model belongs to the technical field of control valves, and in particular relates to a packing seal cut-off control valve. Background Art

[0002] The stop valve, also known as the gate valve, is a forced sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to force the sealing surface to prevent leakage. When the medium enters the valve from under the valve disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve.

[0003] The commonly used sealed stop valves are all turned by turning the handle on the device to drive the structure inside the device to stop the valve. Although this method can stop the valve, it usually takes more turns to achieve the best sealing stop effect when turning the handle. Therefore, the commonly used stop valves need a long time to be used.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A packing seal stop control valve comprises a valve pipe, which is in the shape of a hollow tube. A first pipe is fixedly connected to the wall of the valve pipe, and a second pipe is also fixedly connected to the wall of the valve pipe. The first pipe is in the shape of a hollow tube, and the second pipe is also in the shape of a hollow tube. The first pipe is connected to the valve pipe, and the second pipe is also connected to the valve pipe. A labor-saving structure is arranged in the cavity of the valve pipe, and the labor-saving structure comprises a shift column and an isolation plate. The shift column is slidably connected in the cavity of the valve pipe, and the isolation plate is rotatably connected in the cavity of the valve pipe. The isolation plate can separate the first pipe from the second pipe.

[0007] As a preferred embodiment of the utility model, the shift column is cylindrical, the bottom of the shift column is rotatably connected to the isolation plate, the cross-section of the isolation plate is a parallelogram, and the top of the isolation plate is rotatably connected in the valve tube cavity.

[0008] As a preferred embodiment of the utility model, the labor-saving structure also includes a pressure rod, a base rod, a connecting groove, a connecting column and a pressure ring. The pressure rod is rotatably connected to the top of the valve tube, the base rod is fixedly connected to the top of the valve tube, the connecting groove passes through the wall of the pressure rod, the connecting column is fixedly connected to the top of the shift column, and the pressure ring is fixedly connected to the middle section of the shift column.

[0009] As a preferred embodiment of the utility model, the middle section of the pressure rod is rotatably connected to the top of the base rod, and the connecting column is slidably connected in the connecting groove, which is an elliptical groove that can adapt to the size of the connecting column.

[0010] As a preferred embodiment of the utility model, the labor-saving structure also includes a pulling rod, a moving block, a lower rod, a baffle, a leakage groove and a lower groove. The pulling rod is fixedly connected to the bottom of the shift column, the moving block is symmetrically fixedly connected to the wall of the isolation plate, the lower rod is fixedly connected to the two side walls of the isolation plate, the baffle is fixedly connected to the cavity of the valve tube, the leakage groove runs through the wall of the baffle, the lower groove is opened on the wall of the baffle in the leakage groove, and the shift column can pass through the top of the valve tube.

[0011] As a preferred embodiment of the utility model, the pulling rod is slidably connected between the symmetrical moving blocks, the top of the baffle is round, the baffle is inclined in the cavity of the valve tube, the leakage groove can adapt to the size of the isolation plate, the top of the isolation plate is rotatably connected to the baffle in the leakage groove, the lower rod is symmetrically arranged on both sides of the isolation plate, the lower groove can adapt to the size of the lower rod, the lower rod can enter the lower groove, and the lower groove is symmetrically opened in the leakage groove.

[0012] As a preferred embodiment of the utility model, a sealing strip is fixedly connected in the lower groove, a front groove is also provided in the leakage groove, a similar lower groove is fixedly connected in the front groove, and the front groove can adapt to the bottom of the isolation plate.

[0013] As a preferred embodiment of the utility model, a sealing ring is fixedly connected to the top center of the valve tube, the sealing ring is annular, the bottom of the pressure ring can contact the top of the sealing ring, and the displacement column can pass through the cavity of the sealing ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By setting up a labor-saving structure, the valve tube cavity can be separated by toggling, because when the labor-saving structure is toggled by the pressure rod, the isolation plate is driven to block the leakage groove, which will separate the originally connected first pipe and second pipe. The first pipe and the second pipe are separated by the lever principle, and this process can be completed by toggling the pressure rod. Therefore, compared with the commonly used existing technology, this solution is faster and more convenient to use.

[0016] 2. By setting up an isolation plate and a baffle to isolate the space in the valve tube cavity, the sealing performance can be better, because the isolation plate and the baffle are more sealed when they overlap by squeezing the sealing strip around them, thereby improving the cut-off sealing performance of the device.

[0017] The specific implementation modes of the present utility model are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a bottom stereogram of the utility model;

[0021] Figure 3 This is a cross-sectional view of the valve tube of the utility model;

[0022] Figure 4 This is a three-dimensional diagram of the labor-saving structure of the utility model;

[0023] Figure 5 This is an exploded view of the isolation plate and baffle of the utility model.

[0024] In the figure: 20, valve tube; 21, first pipeline; 22, second pipeline; 23, sealing ring; 30, pressure rod; 31, base rod; 32, connecting groove; 33, shift column; 34, connecting column; 35, pressure ring; 36, pulling rod; 37, moving block; 38, isolation plate; 39, lower rod; 40, baffle; 41, leakage groove; 42, lower groove; 43, sealing strip; 44, front groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a packing seal stop control valve includes a valve pipe 20, which is in a hollow tubular shape. A first pipe 21 is fixedly connected to the wall of the valve pipe 20, and a second pipe 22 is also fixedly connected to the wall of the valve pipe 20. The first pipe 21 is in a hollow tubular shape, and the second pipe 22 is also in a hollow tubular shape. The first pipe 21 is connected to the valve pipe 20, and the second pipe 22 is also connected to the valve pipe 20. The first pipe 21 and the second pipe 22 are connected to corresponding pipes. This is an existing technology, so it will not be described here.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a labor-saving structure is provided in the cavity of the valve tube 20, and the labor-saving structure includes a shift column 33 and an isolation plate 38. The shift column 33 is slidably connected in the cavity of the valve tube 20, and the isolation plate 38 is rotationally connected in the cavity of the valve tube 20. The isolation plate 38 can separate and cut off the first pipeline 21 and the second pipeline 22.

[0028] like Figure 3 , Figure 4 and Figure 5As shown, the shift column 33 is cylindrical, the bottom of the shift column 33 is rotatably connected to the isolation plate 38, the cross-section of the isolation plate 38 is a parallelogram, and the top of the isolation plate 38 is rotatably connected in the cavity of the valve tube 20. The labor-saving structure also includes a pressure rod 30, a base rod 31, a connecting groove 32, a connecting column 34 and a pressing ring 35. The pressure rod 30 is rotatably connected to the top of the valve tube 20, the base rod 31 is fixedly connected to the top of the valve tube 20, the connecting groove 32 runs through the wall of the pressure rod 30, the connecting column 34 is fixedly connected to the top of the shift column 33, the pressing ring 35 is fixedly connected to the middle section of the shift column 33, the middle section of the pressure rod 30 is rotatably connected to the top of the base rod 31, the connecting column 34 is slidably connected in the connecting groove 32, the connecting groove 32 is an elliptical groove, and the connecting groove 32 can adapt to the size of the connecting column 34. The labor-saving structure also includes a pulling rod 36, a moving block 37, a lower rod 39, a baffle 40, a leakage groove 41 and a lower groove 42 , the pull rod 36 is fixedly connected to the bottom of the shift column 33, the moving block 37 is symmetrically fixedly connected to the wall of the isolation plate 38, the lower rod 39 is fixedly connected to the wall of the isolation plate 38 on both sides, the baffle 40 is fixedly connected to the cavity of the valve tube 20, the leakage groove 41 runs through the wall of the baffle 40, and the lower groove 42 is opened on the wall of the baffle 40 in the leakage groove 41. The shift column 33 can pass through the top of the valve tube 20, the pull rod 36 is slidably connected between the symmetrical moving blocks 37, the top of the baffle 40 is circular, and the baffle 40 is inclined in the cavity of the valve tube 20. The leakage groove 41 can adapt to the size of the isolation plate 38, and the top of the isolation plate 38 is rotatably connected to the baffle 40 in the leakage groove 41. The lower rod 39 is symmetrically arranged on both sides of the isolation plate 38, and the lower groove 42 can adapt to the size of the lower rod 39. The lower rod 39 can enter the lower groove 42, and the lower groove 42 is symmetrically opened in the leakage groove 41;

[0029] When in use, the pressure rod 30 is pushed upward, and the pressure rod 30 rotates on the top of the base rod 31. The end of the pressure rod 30 drives the shift column 33 to move vertically downward. When the shift column 33 moves, the pressure ring 35 presses the sealing ring 23 downward so that the sealing ring 23 fills the gap at the top of the valve tube 20. When the shift column 33 moves downward, it drives the pull rod 36. The pull rod 36 pushes the isolation plate 38 to flip in the leakage groove 41 and cover it. At this time, the end of the isolation plate 38 and the lower rod 39 squeeze the sealing strip 43 at the corresponding position and fill the surrounding gap. At this time, the first pipeline 21 and the second pipeline 22 are separated by the baffle 40 and the isolation plate 38 in the cavity of the valve tube 20.

[0030] To sum up, by setting up a labor-saving structure, the valve tube 20 cavity can be separated by a toggling manner. Because the labor-saving structure drives the isolation plate 38 to block the leakage groove 41 when the pressure rod 30 is toggled, the originally connected first pipe 21 and the second pipe 22 are separated. The first pipe 21 and the second pipe 22 are separated by the lever principle, and this process can be completed by toggling the pressure rod 30. Therefore, compared with the commonly used existing technology, this solution is faster and more convenient to use.

[0031] like Figure 4 and Figure 5 As shown, a sealing strip 43 is fixedly connected in the lower groove 42, a front groove 44 is also provided in the leakage groove 41, and the same lower groove 42 is fixedly connected in the front groove 44, and the front groove 44 can adapt to the bottom of the isolation plate 38, and a sealing ring 23 is fixedly connected to the top center of the valve tube 20, and the sealing ring 23 is annular, and the bottom of the pressure ring 35 can contact the top of the sealing ring 23, and the displacement column 33 can pass through the cavity of the sealing ring 23;

[0032] When in use, the pull rod 36 pushes the isolation plate 38 to flip in the drain groove 41 and cover it. At this time, the end of the isolation plate 38 and the lower rod 39 squeeze the sealing strip 43 at the corresponding position and fill the surrounding gap.

[0033] In summary, by setting the isolation plate 38 and the baffle plate 40 to isolate the space inside the valve tube 20 cavity, the sealing performance can be better, because the isolation plate 38 is more sealed when it overlaps with the baffle plate 40 by squeezing the sealing strip 43 around the isolation plate 38, thereby improving the cut-off sealing performance of the device.

[0034] Working principle: push the pressure rod 30 upward, then the pressure rod 30 will rotate on the top of the base rod 31, and the end of the pressure rod 30 will drive the shift column 33 to move vertically downward, when the shift column 33 moves, the pressure ring 35 presses down the sealing ring 23 so that the sealing ring 23 fills the gap at the top of the valve tube 20, and when the shift column 33 moves downward, it will drive the pulling rod 36, and the pulling rod 36 will push the isolation plate 38 to flip in the leakage groove 41 and block it, at this time, the end of the isolation plate 38 and the lower rod 39 will squeeze the sealing strip 43 at the corresponding position and fill the surrounding gap, at this time, the first pipe 21 and the second pipe 22 are separated by the baffle 40 and the isolation plate 38 in the valve tube 20 cavity.

[0035] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A packing seal stop control valve, comprising a valve pipe (20), the valve pipe (20) is in a hollow tubular shape, a first pipe (21) is fixedly connected to the wall of the valve pipe (20), a second pipe (22) is also fixedly connected to the wall of the valve pipe (20), the first pipe (21) is in a hollow tubular shape, the second pipe (22) is also in a hollow tubular shape, the first pipe (21) is in communication with the valve pipe (20), and the second pipe (22) is also in communication with the valve pipe (20), characterized in that: A labor-saving structure is arranged in the cavity of the valve tube (20), and the labor-saving structure comprises a shift column (33) and an isolation plate (38). The shift column (33) is slidably connected in the cavity of the valve tube (20), and the isolation plate (38) is rotatably connected in the cavity of the valve tube (20). The isolation plate (38) can separate the first pipeline (21) and the second pipeline (22).

2. The packing seal stop control valve according to claim 1, characterized in that: The shift column (33) is cylindrical, the bottom of the shift column (33) is rotatably connected to the isolation plate (38), the section of the isolation plate (38) is a parallelogram, and the top of the isolation plate (38) is rotatably connected in the cavity of the valve tube (20).

3. The packing seal stop control valve according to claim 1, characterized in that: The labor-saving structure further comprises a pressure rod (30), a base rod (31), a connecting groove (32), a connecting column (34) and a pressure ring (35); the pressure rod (30) is rotatably connected to the top of the valve tube (20); the base rod (31) is fixedly connected to the top of the valve tube (20); the connecting groove (32) penetrates through the wall surface of the pressure rod (30); the connecting column (34) is fixedly connected to the top of the shift column (33); and the pressure ring (35) is fixedly connected to the middle section of the shift column (33).

4. The packing seal stop control valve according to claim 3, characterized in that: The middle section of the pressure rod (30) is rotatably connected to the top of the base rod (31), and the connecting column (34) is slidably connected in the connecting groove (32). The connecting groove (32) is an elliptical groove, and the connecting groove (32) can adapt to the size of the connecting column (34).

5. The packing seal stop control valve according to claim 3, characterized in that: The labor-saving structure further comprises a pulling rod (36), a moving block (37), a lower rod (39), a baffle (40), a leakage groove (41) and a lower groove (42); the pulling rod (36) is fixedly connected to the bottom of the shift column (33); the moving block (37) is symmetrically fixedly connected to the wall surface of the isolation plate (38); the lower rod (39) is fixedly connected to the wall surfaces on both sides of the isolation plate (38); the baffle (40) is fixedly connected to the cavity of the valve tube (20); the leakage groove (41) penetrates the wall surface of the baffle (40); the lower groove (42) is arranged on the wall surface of the baffle (40) in the leakage groove (41); and the shift column (33) can pass through the top of the valve tube (20).

6. The packing seal stop type control valve according to claim 5, characterized in that: The pulling rod (36) is slidably connected between the symmetrical moving blocks (37); the top of the baffle (40) is circular; the baffle (40) is inclined in the cavity of the valve tube (20); the leakage groove (41) can adapt to the size of the isolation plate (38); the top of the isolation plate (38) is rotatably connected to the baffle (40) in the leakage groove (41); the lower rod (39) is symmetrically arranged on both sides of the isolation plate (38); the lower groove (42) can adapt to the size of the lower rod (39); the lower rod (39) can enter the lower groove (42); and the lower groove (42) is symmetrically opened in the leakage groove (41).

7. The packing seal stop type control valve according to claim 6, characterized in that: A sealing strip (43) is fixedly connected in the lower groove (42), and a front groove (44) is also provided in the drain groove (41). A similar lower groove (42) is fixedly connected in the front groove (44), and the front groove (44) can fit the bottom of the isolation plate (38).

8. The packing seal stop control valve according to claim 1, characterized in that: The top center of the valve tube (20) is fixedly connected with a sealing ring (23), the sealing ring (23) is in a circular ring shape, the bottom of the pressure ring (35) can contact the top of the sealing ring (23), and the displacement column (33) can pass through the cavity of the sealing ring (23).

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