CN222650593U - Stop valve seal structure - Google Patents
Stop valve seal structure Download PDFInfo
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- CN222650593U CN222650593U CN202421424765.3U CN202421424765U CN222650593U CN 222650593 U CN222650593 U CN 222650593U CN 202421424765 U CN202421424765 U CN 202421424765U CN 222650593 U CN222650593 U CN 222650593U
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Abstract
本实用新型涉及截止阀技术领域，具体为一种截止阀密封结构，包括阀体和安装管；阀体上设有固定管，安装管与固定管配合连接并与固定管同轴分布；固定管滑动设有阀杆并与固定管同轴分布，阀杆下端设有阀瓣，阀体内设有截止部，截止部上设有通孔，阀瓣与通孔配合连接；安装管转动设有安装部，安装部设有螺母，阀杆与螺母螺纹配合连接，安装部上设有手轮；安装管内设有密封部，密封部压紧在阀杆外周面。本实施例中，安装管内周面压紧在密封部外周面，密封部内周面压紧在阀杆外周面，使阀体内液体无法渗入螺纹处；安装管便于拆卸和安装同时便于更换密封部，增加截止阀的使用寿命。
The utility model relates to the technical field of stop valves, specifically a stop valve sealing structure, including a valve body and a mounting tube; a fixed tube is provided on the valve body, the mounting tube is connected with the fixed tube and is coaxially distributed with the fixed tube; a valve stem is slidably provided on the fixed tube and is coaxially distributed with the fixed tube, a valve flap is provided at the lower end of the valve stem, a stop portion is provided in the valve body, a through hole is provided on the stop portion, and the valve flap is connected with the through hole; a mounting portion is rotatably provided on the mounting tube, a nut is provided on the mounting portion, the valve stem and the nut are threadedly connected, and a hand wheel is provided on the mounting portion; a sealing portion is provided in the mounting tube, and the sealing portion is pressed against the outer peripheral surface of the valve stem. In this embodiment, the inner peripheral surface of the mounting tube is pressed against the outer peripheral surface of the sealing portion, and the inner peripheral surface of the sealing portion is pressed against the outer peripheral surface of the valve stem, so that the liquid in the valve body cannot penetrate into the thread; the mounting tube is easy to disassemble and install, and it is also easy to replace the sealing portion, thereby increasing the service life of the stop valve.
Description
Technical Field
The utility model relates to the technical field of stop valves, in particular to a stop valve sealing structure.
Background
The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so that when the valve is closed, pressure must be applied to the valve clack so as to force the sealing surface not to leak. The opening and closing part of the stop valve is a plug-shaped valve clack, the sealing upper surface is a plane or a sea conical surface, and the valve clack moves linearly along the central line of the valve seat. The valve rod of the valve has relatively short opening or closing stroke, has very reliable cutting function, and is very suitable for regulating flow rate due to the proportional relation between the change of the valve seat through hole and the stroke of the valve clack.
The Chinese patent with the publication number of CN117739129A discloses a sealing stop valve, which comprises a stop valve body, a valve cavity is arranged in the stop valve body, symmetrical drainage pipes are communicated with two sides of the valve cavity, a first drainage plate and a second drainage plate which are symmetrical are arranged in the valve cavity between the drainage pipes, a first stop plate is fixedly connected between the first drainage plate and the second drainage plate, a first flow hole is formed in the center position of the top of the first stop plate in a penetrating manner, a first drainage hole is formed in the upper portion of the first stop plate in a penetrating manner on the second drainage plate, a second drainage hole is formed in the lower portion of the first stop plate in a penetrating manner on the first drainage plate, a connecting hole is communicated with the valve cavity, a second stop plate is arranged in the connecting hole, a second flow hole is formed in the center position of the top of the second stop plate in a penetrating manner, a connecting pipe is arranged in the top of the connecting hole in a penetrating manner, and a sealing assembly is arranged in the connecting pipe.
However, the technical scheme has the following defects that in the sealing stop valve, when the valve clack is opened, liquid in the valve body can infiltrate into the connecting pipe, and the sealing effect at the valve rod of the stop valve is poor, so that the transmission of threads and thread grooves on the valve rod is blocked, and the service life of the stop valve is shortened.
Disclosure of utility model
The utility model aims to solve the problems in the background art and provides a sealing structure of a stop valve.
The technical scheme of the utility model is that the stop valve sealing structure comprises a valve body and an installation pipe;
The valve body is provided with a fixed pipe, and the mounting pipe is connected with the fixed pipe in a matching way and is coaxially distributed with the fixed pipe;
The fixed pipe is provided with a valve rod in a sliding manner and is coaxially distributed with the fixed pipe, the lower end of the valve rod is provided with a valve clack, a stop part is arranged in the valve body, a through hole is formed in the stop part, and the valve clack is connected with the through hole in a matching manner;
The mounting pipe is rotationally provided with a mounting part, the mounting part is provided with a nut, the valve rod is in threaded fit connection with the nut, and the mounting part is provided with a hand wheel;
the installation tube is internally provided with a sealing part which is tightly pressed on the outer circumferential surface of the valve rod.
Preferably, a partition plate is arranged in the mounting tube, the sealing part is positioned below the partition plate, a thread is arranged on the valve rod, and the thread is positioned above the partition plate;
the fixed pipe is internally provided with a limiting plate, the valve rod is connected with the limiting plate in a sliding mode, the limiting plate and the separating plate are pressed at two ends of the sealing part in the installation state, the inner peripheral surface of the sealing part is provided with a plurality of sealing rings, and the sealing rings are pressed on the outer peripheral surface of the valve rod.
Preferably, the inner peripheral surface of the mounting tube is pressed against the outer peripheral surface of the sealing part, and the sealing part has certain elasticity.
Preferably, the outer peripheral surface of the valve rod is provided with a bump, the limiting plate is provided with a groove, and the bump is connected with the groove in a sliding fit manner.
Preferably, the inner circumferential surface of the mounting tube is provided with an annular groove, the outer peripheral surface of the mounting part is provided with a convex ring which is connected with the annular groove in a sliding fit manner.
Preferably, the device further comprises a bolt;
The end heads of the installation tube and the fixed tube, which are close to each other, are respectively provided with a fixed ring, and bolts penetrate through one fixed ring to be connected with the other fixed ring in a threaded fit manner.
Preferably, one end of the fixed pipe, which is close to the mounting pipe, is provided with a sealing gasket and is coaxially distributed with the fixed pipe, and the end head of the mounting pipe is tightly pressed on the sealing gasket.
Preferably, the valve clack is in a truncated cone shape, and the outer peripheral surface of the valve clack is tightly pressed on the inner wall of the through hole.
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial technical effects:
1. In this embodiment, valve rod sliding connection limiting plate during installation places the sealing in the installation pipe, and the installation pipe cover is established on the valve rod, and threaded fit is connected on nut and the valve rod, and installation pipe and fixed pipe installation are accomplished back limiting plate and division board and are compressed tightly at sealing both ends, and installation pipe inner peripheral face compresses tightly at sealing outer peripheral face, and sealing inner peripheral face compresses tightly at the valve rod outer peripheral face, makes the unable infiltration screw thread department of liquid in the valve body increase stop valve's life.
2. In this embodiment, fixed ring is connected through a plurality of bolt cooperation on fixed ring and the fixed pipe on the installation tube, is equipped with sealed pad between installation tube and the fixed pipe, and installation tube and fixed pipe compress tightly sealed pad, and installation tube convenient to detach and installation are convenient for change sealing portion simultaneously, increase the life of stop valve.
Drawings
Fig. 1 is a perspective view of an embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of a sealing structure of a stop valve according to the present utility model.
Fig. 3 is a cross-sectional view of a sealing structure of a stop valve according to the present utility model.
Reference numeral 1, valve body; 2, mounting pipes, 3, fixing pipes, 4, fixing rings, 5, a hand wheel, 6, a valve rod, 7, a nut, 8, a mounting part, 9, a stop part, 10, a valve clack, 11, a convex ring, 12, threads, 13, bolts, 14, a sealing part, 15, a sealing ring, 16, a separation plate, 17, a limiting plate, 18, a sealing gasket, 19 and a bump.
Detailed Description
Example 1
As shown in fig. 1 to 3, the sealing structure of the stop valve provided by the utility model comprises a valve body 1 and a mounting pipe 2;
The valve body 1 is provided with a fixed pipe 3, and the installation pipe 2 is connected with the fixed pipe 3 in a matching way and is coaxially distributed with the fixed pipe 3;
The fixed pipe 3 is provided with a valve rod 6 in a sliding manner and is coaxially distributed with the fixed pipe 3, the lower end of the valve rod 6 is provided with a valve clack 10, a stop part 9 is arranged in the valve body 1, a through hole is arranged on the stop part 9, and the valve clack 10 is connected with the through hole in a matching manner;
further, the valve clack 10 is in a truncated cone shape, and the outer peripheral surface of the valve clack 10 is tightly pressed on the inner wall of the through hole;
The installation tube 2 is rotatably provided with an installation part 8, the installation part 8 is provided with a nut 7, the valve rod 6 is in threaded fit connection with the nut 7, and the installation part 8 is provided with a hand wheel 5;
Further, an annular groove is formed in the inner peripheral surface of the mounting pipe 2, a convex ring 11 is arranged on the outer peripheral surface of the mounting part 8, and the convex ring 11 is connected with the annular groove in a sliding fit manner;
the mounting tube 2 is provided with a sealing part 14, and the sealing part 14 is pressed on the outer circumferential surface of the valve rod 6.
According to the utility model, the hand wheel 5 is rotated to drive the mounting part 8 and the nut 7 to rotate, the valve rod 6 is in threaded fit connection with the nut 7, the valve rod 6 slides in the fixed pipe 3, the valve rod 6 drives the valve clack 10 to be far away from or close to the stop part 9, the valve stop valve can be opened or closed, the mounting pipe 2 and the fixed pipe 3 are in detachable connection, the sealing part 14 is arranged in the mounting pipe 2, so that the sealing performance of the valve rod 6 is better, and the mounting pipe 2 can be detached from the fixed pipe 3, so that the internal sealing part 14 is convenient to replace, and the service life of the stop valve is prolonged.
Example two
As shown in fig. 1-2, in the sealing structure of the stop valve according to the present utility model, compared with the first embodiment, the partition plate 16 is disposed in the mounting tube 2, the sealing portion 14 is disposed below the partition plate 16, the valve rod 6 is provided with the thread 12, and the thread 12 is disposed above the partition plate 16;
The fixed pipe 3 is internally provided with a limiting plate 17, the valve rod 6 is in sliding connection with the limiting plate 17, the limiting plate 17 and the separating plate 16 are pressed at two ends of the sealing part 14 in the installation state, the inner peripheral surface of the sealing part 14 is provided with a plurality of sealing rings 15, and the sealing rings 15 are uniformly pressed on the outer peripheral surface of the valve rod 6.
Further, the inner peripheral surface of the mounting tube 2 is pressed against the outer peripheral surface of the sealing portion 14, and the sealing portion 14 has a certain elasticity.
Further, the outer peripheral surface of the valve rod 6 is provided with a bump 19, the limiting plate 17 is provided with a groove, and the bump 19 is connected with the groove in a sliding fit manner.
In this embodiment, valve rod 6 sliding connection limiting plate 17 during installation, place sealing part 14 in installation tube 2, installation tube 2 cover is established on valve rod 6, nut 7 and valve rod 6 go up screw thread 12 cooperation and are connected, installation tube 2 and fixed pipe 3 installation back limiting plate 17 and division board 16 compress tightly at sealing part 14 both ends, installation tube 2 inner peripheral face compresses tightly at sealing part 14 outer peripheral face, sealing part 14 inner peripheral face compresses tightly at valve rod 6 outer peripheral face, make the unable infiltration screw thread 12 department of interior liquid of valve body 1 increase the life of stop valve.
Example III
As shown in fig. 1-2, the sealing structure of the stop valve according to the present utility model further includes a bolt 13 in comparison with the first embodiment;
The end that installation tube 2 and fixed pipe 3 are close to each other all is equipped with solid fixed ring 4, and bolt 13 is equipped with a plurality ofly, and bolt 13 passes a solid fixed ring 4 and the screw thread fit connection of another solid fixed ring 4.
Further, a sealing gasket 18 is arranged at one end of the fixed pipe 3 close to the installation pipe 2 and is distributed coaxially with the fixed pipe 3, and the end head of the installation pipe 2 is pressed on the sealing gasket 18.
In this embodiment, fixed ring 4 on installation tube 2 and fixed ring 4 on the fixed pipe 3 are connected through a plurality of bolts 13 cooperation, are equipped with sealed 18 between installation tube 2 and the fixed pipe 3, and installation tube 2 and fixed pipe 3 compress tightly sealed 18, and installation tube 2 is convenient for dismantle and install and is convenient for change sealing portion 14 simultaneously, increases the life of stop valve.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.
Claims (8)
1. The sealing structure of the stop valve is characterized by comprising a valve body (1) and a mounting pipe (2);
The valve body (1) is provided with a fixed pipe (3), and the mounting pipe (2) is connected with the fixed pipe (3) in a matching way and is coaxially distributed with the fixed pipe (3);
the fixed pipe (3) is provided with a valve rod (6) in a sliding manner and is coaxially distributed with the fixed pipe (3), the lower end of the valve rod (6) is provided with a valve clack (10), a stop part (9) is arranged in the valve body (1), a through hole is formed in the stop part (9), and the valve clack (10) is connected with the through hole in a matching manner;
The mounting pipe (2) is rotationally provided with a mounting part (8), the mounting part (8) is provided with a nut (7), the valve rod (6) is in threaded fit connection with the nut (7), and the mounting part (8) is provided with a hand wheel (5);
A sealing part (14) is arranged in the mounting pipe (2), and the sealing part (14) is tightly pressed on the outer circumferential surface of the valve rod (6).
2. A shut-off valve sealing structure according to claim 1, characterized in that a partition plate (16) is arranged in the mounting tube (2), the sealing part (14) is positioned below the partition plate (16), the valve rod (6) is provided with threads (12), and the threads (12) are positioned above the partition plate (16);
The fixed pipe (3) is internally provided with a limiting plate (17), the valve rod (6) is connected with the limiting plate (17) in a sliding mode, the limiting plate (17) and the separating plate (16) are pressed at two ends of the sealing part (14) in the installation state, the inner peripheral surface of the sealing part (14) is provided with a plurality of sealing rings (15), and the sealing rings (15) are pressed on the outer peripheral surface of the valve rod (6).
3. A shut-off valve sealing structure according to claim 2, wherein the inner peripheral surface of the mounting tube (2) is pressed against the outer peripheral surface of the sealing portion (14), and the sealing portion (14) has a certain elasticity.
4. A shut-off valve sealing structure according to claim 2, characterized in that the outer circumferential surface of the valve rod (6) is provided with a projection (19), the limiting plate (17) is provided with a groove, and the projection (19) is connected with the groove in a sliding fit manner.
5. The stop valve sealing structure according to claim 1, wherein the inner peripheral surface of the mounting tube (2) is provided with an annular groove, the outer peripheral surface of the mounting portion (8) is provided with a convex ring (11), and the convex ring (11) is connected with the annular groove in a sliding fit manner.
6. A shut-off valve sealing structure according to claim 1, further comprising a bolt (13);
The end heads of the mounting pipe (2) and the fixing pipe (3) which are close to each other are respectively provided with a fixing ring (4), and a bolt (13) penetrates through one fixing ring (4) to be in threaded fit connection with the other fixing ring (4).
7. A shut-off valve sealing structure according to claim 1, characterized in that the end of the fixed pipe (3) close to the mounting pipe (2) is provided with a sealing gasket (18) and is distributed coaxially with the fixed pipe (3), and the end of the mounting pipe (2) is pressed against the sealing gasket (18).
8. The shutoff valve sealing structure according to claim 1, wherein the valve flap (10) is in a truncated cone shape, and an outer peripheral surface of the valve flap (10) is pressed against an inner wall of the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421424765.3U CN222650593U (en) | 2024-06-21 | 2024-06-21 | Stop valve seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421424765.3U CN222650593U (en) | 2024-06-21 | 2024-06-21 | Stop valve seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222650593U true CN222650593U (en) | 2025-03-21 |
Family
ID=95007231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421424765.3U Active CN222650593U (en) | 2024-06-21 | 2024-06-21 | Stop valve seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222650593U (en) |
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2024
- 2024-06-21 CN CN202421424765.3U patent/CN222650593U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |