Novel stop valve with high sealing performance

Abstract

The utility model relates to the technical field of stop valves, in particular to a novel stop valve with high sealing performance, which comprises a fixed shell, connecting pipes are fixedly connected to two ends of the fixed shell, fixed plates are fixedly connected to joints of the fixed shell and the connecting pipes, and the fixed plates are respectively mounted on the upper side and the lower side. A connecting plate is fixedly connected between the fixing plates, a connecting through opening is formed in the connecting plate, a threaded rod is rotationally connected between the upper inner wall and the lower inner wall of the fixing shell, the position of the threaded rod corresponds to that of the connecting plate, the threaded rod is sleeved with a fixing blocking block in a threaded mode, and the size of the fixing blocking block is matched with that of the connecting through opening. According to the stop valve, the connecting port is sealed from the upper side and the lower side through the fixed blocking block, meanwhile, the sealing plate can move to conduct secondary sealing, the blocking effect is further improved, the situation of liquid leakage is avoided, and use of the stop valve is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a novel stop valve with strong sealing performance. Background Art

[0002] The stop valve is the most widely used valve, which plays an important role in cutting off the medium and throttling. In industrial production, in order to avoid the danger caused by the backflow of objects, stop valves need to be installed on each pipeline to isolate the medium.

[0003] When in use, the existing stop valves mostly perform sealing and shutoff by the pressure between the valve disc sealing surface and the valve seat sealing surface. The shutoff and blocking effect thereof has certain deficiencies and liquid leakage is prone to occur. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a new type of stop valve with strong sealing performance.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A new type of shut-off valve with strong sealing performance comprises: a fixed shell, both ends of the fixed shell are fixedly connected to connecting pipes, the connection between the fixed shell and the connecting pipe is fixedly connected to a fixed plate, and the fixed plates are respectively installed at the upper and lower sides, a connecting plate is fixedly connected between the fixed plates, a connecting port is provided on the connecting plate, a threaded rod is rotatably connected between the upper and lower inner walls of the fixed shell, the position of the threaded rod corresponds to the connecting plate, and a fixed block is threadedly sleeved on the threaded rod, the size of the fixed block matches the connecting port, and the fixed block is slidably connected to the inner wall of the fixed shell.

[0007] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: a secondary sealing structure is installed on the fixed shell, and the secondary sealing structure includes a fixed gear fixedly sleeved on the threaded rod, and the fixed gear is arranged on the outside of the fixed block, and a fixed rack meshing with it is installed on the rear side of each of the fixed gears, and one end of each of the fixed racks extends to the inner side of the corresponding connecting tube, and the end of each of the fixed racks located on the inner side of the connecting tube is fixedly connected to a sealing plate, and the position and shape of the sealing plate match the corresponding fixed plate, each of the fixed racks is slidably connected to a connecting rod, and each of the connecting rods is fixedly connected to the side wall of the corresponding fixed plate, each of the fixed racks is provided with a connecting groove, each of the connecting rods extends into the inner side of the connecting groove, and the connecting rod and the fixed rack are slidably connected through the connecting groove, and a spring rod is fixedly connected between the connecting rod and the inner wall of the connecting groove.

[0008] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the outer side of each sealing plate and fixed block is wrapped with a sealing gasket.

[0009] In order to better achieve the above purpose, the present invention adopts a further technical solution: the threaded rod passes through the inner wall of the fixed shell and extends to the outside of the fixed shell, and one end of the threaded rod located outside the fixed shell is fixedly connected to a rotating block.

[0010] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the threads of the threaded rods located on the upper and lower sides of the connecting plate are arranged oppositely.

[0011] The beneficial effects of the utility model are as follows: the connecting port is sealed from the upper and lower sides by the fixed blocking block, and the sealing plate can be moved at the same time to perform secondary sealing, thereby further improving the blocking effect, avoiding the occurrence of liquid leakage, and being beneficial to the use of the stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of a new type of stop valve with strong sealing performance proposed by the utility model;

[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection groove of a new type of shut-off valve with strong sealing performance proposed by the utility model.

[0015] In the figure: 1 fixed housing, 2 connecting pipe, 3 fixed plate, 4 connecting plate, 5 connecting port, 6 threaded rod, 7 rotating block, 8 fixed blocking block, 9 sealing plate, 10 fixed gear, 11 fixed rack, 12 connecting rod, 13 connecting groove, 14 spring rod. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0017] Reference Figure 1-Figure 3The cam 4 is fixed on the top of the cam 4 and the bottom of the cam 4 is fixed on the top of the cam 4, so that the cam 4 can slide in the airtight position, thereby preventing the cam 4 from leaking out of the cam 4.

[0018] A secondary sealing structure is installed on the fixed shell 1, and the secondary sealing structure includes a fixed gear 10 fixedly sleeved on the threaded rod 6. The fixed gear 10 is arranged on the outside of the fixed block 8. A fixed rack 11 meshing with it is installed on the rear side of each fixed gear 10, and one end of each fixed rack 11 extends to the inner side of the corresponding connecting pipe 2. Each fixed rack 11 is fixedly connected to a sealing plate 9 at one end on the inner side of the connecting pipe 2, and the position and shape of the sealing plate 9 match the corresponding fixed plate 3. A connecting rod 12 is slidably connected to each fixed rack 11, and each connecting rod 12 is fixedly connected to the side wall of the corresponding fixed plate 3; when the threaded rod 6 rotates, the fixed gear 10 rotates accordingly, allowing the fixed rack 11 engaged with the fixed gear 10 to move. In the process of the fixed block 8 moving toward the connecting port 5, the fixed rack 11 will also move toward the inner side of the fixed shell 1, driving the sealing plate 9 to move accordingly. The sealing plate 9 rests on the fixed plate 3 for further sealing; each fixed rack 11 is provided with a connecting groove 13, and each connecting rod 12 extends into the inner side of the connecting groove 13, and the connecting rod 12 and the fixed rack 11 are slidingly connected through the connecting groove 13. A spring rod 14 is fixedly connected between the connecting rod 12 and the inner wall of the connecting groove 13, and the spring rod 14 plays the role of assisting movement; the outer side of each sealing plate 9 and the fixed block 8 is wrapped with a sealing gasket.

[0019] The threaded rod 6 passes through the inner wall of the fixed shell 1 and extends to the outside of the fixed shell 1, and one end of the threaded rod 6 located on the outside of the fixed shell 1 is fixedly connected to a rotating block 7, and rotating the rotating block 7 causes the threaded rod 6 to rotate; the threads of the threaded rod 6 on the upper and lower sides of the connecting plate 4 are arranged in opposite directions, so when the threaded rod 6 rotates, the two fixed blocks 8 will move in opposite directions.

[0020] When the present invention is in use, the rotating block 7 is rotated to rotate the threaded rod 6. Since the fixed block 8 cannot rotate, the fixed block 8 will move up and down when the threaded rod 6 rotates, so that the fixed block 8 moves toward the connecting port 5. The fixed block 8 on the upper and lower sides will seal the connecting port 5. At the same time, when the threaded rod 6 rotates, the fixed gear 10 rotates accordingly, allowing the fixed rack 11 meshing with the fixed gear 10 to move. In the process of the fixed block 8 moving toward the connecting port 5, the fixed rack 11 will also move toward the inner side of the fixed shell 1, driving the sealing plate 9 to move accordingly. The sealing plate 9 rests on the fixed plate 3 for further sealing to prevent liquid leakage.

Claims

1. A new type of stop valve with strong sealing performance, characterized in that: include: A fixed shell (1), wherein both ends of the fixed shell (1) are fixedly connected to connecting pipes (2), a fixed plate (3) is fixedly connected to the connection between the fixed shell (1) and the connecting pipe (2), and the fixed plates (3) are respectively installed at the upper and lower sides, a connecting plate (4) is fixedly connected between the fixing plates (3), and a connecting opening (5) is provided on the connecting plate (4), a threaded rod (6) is rotatably connected between the upper and lower inner walls of the fixed shell (1), the position of the threaded rod (6) corresponds to the connecting plate (4), and a fixed block (8) is threadedly sleeved on the threaded rod (6), the size of the fixed block (8) matches the connecting opening (5), and the fixed block (8) is slidably connected to the inner wall of the fixed shell (1).

2. A new type of stop valve with strong sealing performance according to claim 1, characterized in that: A secondary sealing structure is installed on the fixed housing (1), and the secondary sealing structure includes a fixed gear (10) fixedly sleeved on the threaded rod (6), and the fixed gear (10) is arranged on the outside of the fixed block (8), and a fixed rack (11) meshing with it is installed on the rear side of each fixed gear (10), and one end of each fixed rack (11) extends to the inner side of the corresponding connecting pipe (2), and one end of each fixed rack (11) located on the inner side of the connecting pipe (2) is fixedly connected to a sealing plate (9), and the position of the sealing plate (9) is fixed. The shape and size of the fixed rack (11) match the corresponding fixed plate (3), each fixed rack (11) is slidably connected to a connecting rod (12), each connecting rod (12) is fixedly connected to the side wall of the corresponding fixed plate (3), each fixed rack (11) is provided with a connecting groove (13), each connecting rod (12) extends into the inner side of the connecting groove (13), and the connecting rod (12) and the fixed rack (11) are slidably connected through the connecting groove (13), and a spring rod (14) is fixedly connected between the connecting rod (12) and the inner wall of the connecting groove (13).

3. A new type of stop valve with strong sealing performance according to claim 2, characterized in that: The outer sides of each sealing plate (9) and fixed block (8) are wrapped with a sealing gasket.

4. A new type of stop valve with strong sealing performance according to claim 1, characterized in that: The threaded rod (6) passes through the inner wall of the fixed shell (1) and extends to the outside of the fixed shell (1), and one end of the threaded rod (6) located outside the fixed shell (1) is fixedly connected to a rotating block (7).

5. A new type of stop valve with strong sealing performance according to claim 1, characterized in that: The threads of the threaded rod (6) are located on the upper and lower sides of the connecting plate (4) and are arranged in opposite directions.

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