CN221278478U

CN221278478U - Stop valve body capable of distinguishing high end from low end

Info

Publication number: CN221278478U
Application number: CN202322966000.4U
Authority: CN
Inventors: 王珊珊; 谭凯; 张冬冬; 路前程; 于云升; 徐晓波; 赵国强; 黄落强; 李全鵝
Original assignee: Shandong Rongjin Intelligent Equipment Technology Co ltd
Current assignee: Shandong Rongjin Intelligent Equipment Technology Co ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-07-05
Anticipated expiration: 2033-11-03

Abstract

The utility model discloses a stop valve body capable of distinguishing high and low ends, which relates to the technical field of stop valves and comprises a valve body, wherein a stop component is arranged on the left side of the interior of the valve body and comprises a stop ring and a rotating shaft, the outer side of the stop ring is fixedly connected with the inner wall of the valve body, two ends of the rotating shaft are fixedly connected with the inner wall of the valve body, the rotating shaft is arranged on the left side of the stop ring, the upper end of the rotating shaft is rotationally connected with a first fan blade, the lower end of the rotating shaft is rotationally connected with a second fan blade, the right side of the interior of the valve body is provided with a valve seat, the upper end of the valve body is fixedly connected with a gland, the middle part of the gland is fixedly connected with a packing pressing plate, the middle part of the packing pressing plate is slidably connected with a valve rod, the lower end of the valve rod extends into the interior of the valve body and is fixedly connected with a valve clack, and the valve clack is matched with the valve seat, so that the stability of a system can be maintained, and the flow of fluid in a preset direction and flow in the system can be ensured, and the normal operation of a technological process can be maintained.

Description

Stop valve body capable of distinguishing high end from low end

Technical Field

The utility model relates to the technical field of stop valves, in particular to a stop valve body capable of distinguishing high ends from low ends.

Background

The stop valve body is provided with three ports, namely a left port, a right port and an upper port, wherein the left port and the right port are used for being connected to a pipeline, the upper port is a valve cover and a valve rod, and the three ports are communicated with the inner cavity of the stop valve body. When the valve body is reinstalled, the valve body is installed on the pipeline through the left and right ports (usually by flange sealing), and the valve body is directional in design, i.e. the fluid is directional when passing through the valve body, so that the valve body needs to be installed according to the direction of the fluid flowing in the pipeline during installation.

When the valve is closed, if there is a higher pressure upstream of the valve than downstream of the valve, this reverse pressure differential may cause liquid to flow back, if liquid flows back to the inlet side of the valve, which may cause leakage or loss of liquid from the valve, which may affect the stability and efficiency of the process and may cause degradation of the product quality, a shut-off valve body that can distinguish between high and low ends is now proposed to address the above-mentioned problems.

Disclosure of utility model

In order to solve the above technical problems, a valve body of a stop valve is provided, which can distinguish between high and low ends, and solves the problems that when the valve is closed, if there is a higher pressure upstream of the valve than downstream of the valve, the reverse pressure difference may cause liquid backflow, if the liquid flows back to the inlet side of the valve, the valve leakage or liquid loss may be caused, which may affect the stability and efficiency of the process and may cause the product quality to be reduced.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a can distinguish stop valve body of high low end, includes the valve body, the inside left side of valve body is provided with the contrary subassembly that ends, the contrary subassembly that ends includes stop ring and pivot, stop ring outside and valve body inner wall fixed connection, the both ends and the valve body inner wall fixed connection of pivot, just the pivot sets up in stop ring left side, pivot upper end rotation is connected with first flabellum, the pivot lower extreme rotates and is connected with the second flabellum, the inside right side of valve body is provided with the disk seat, valve body upper end fixedly connected with gland, gland middle part fixedly connected with packing clamp plate, packing clamp plate middle part sliding connection has the valve rod, the lower extreme of valve rod extends into the inside and fixedly connected with valve clack of valve body, valve clack and disk seat looks adaptation.

Preferably, the bottom of the gland is fixedly connected with a packing pressing sleeve, a packing cavity is formed by the inner wall of the packing pressing sleeve and the outer wall of the valve rod, and a plurality of packing materials are filled in the packing cavity.

Preferably, the bottom of the packing pressing sleeve is fixedly connected with a lower sealing seat, and the inner wall of the lower sealing seat is in sliding connection with the outer wall of the valve rod.

Preferably, the upper end of the pressing cover is fixedly connected with a valve cover through a bolt, the middle part of the valve cover is fixedly connected with an upper sealing seat, the inner thread of the upper sealing seat is connected with a threaded rod, and the bottom of the threaded rod is fixedly connected with the upper end of the valve rod.

Preferably, the valve cover upper surface fixedly connected with connecting seat, connecting seat upper end fixedly connected with thread bush, thread bush inside and threaded rod upper end threaded connection.

Preferably, the upper end of the threaded rod extends out of the threaded sleeve and is fixedly connected with a hand wheel.

Preferably, the upper end of the valve body is obliquely arranged towards the left side, and the valve body is of a Y-shaped structure as a whole.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the first fan blade, the second fan blade, the rotating shaft and the blocking ring are arranged, when a backflow phenomenon occurs, the backflow liquid pushes the first fan blade and the second fan blade to rotate rightwards around the rotating shaft and finally contacts with the blocking ring, so that the liquid in the valve body is blocked, the liquid backflow is prevented, the stability of the system can be maintained, the flow of the fluid in the system according to the preset direction and flow rate is ensured, the normal operation of the process is maintained, the quality of a product is ensured, meanwhile, the flow direction of the liquid in the valve body can be rapidly judged according to the inclined direction of the upper end of the valve body, and the installation efficiency is effectively improved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the internal structure of the valve body according to the present utility model;

fig. 3 is a schematic structural view of a non-return assembly according to the present utility model.

The reference numerals in the figures are:

1. A valve body; 2. a valve seat; 3. a valve flap; 4. a valve stem; 5. a gland; 6. a packing pressing plate; 7. packing pressing sleeve; 8. a filler cavity; 9. a filler; 10. a lower seal seat; 11. a connecting seat; 12. a thread sleeve; 13. a threaded rod; 14. a hand wheel; 15. a backstop assembly; 1501. a blocking ring; 1502. a rotating shaft; 1503. a first fan blade; 1504. a second fan blade; 16. a valve cover; 17. and (5) an upper sealing seat.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.

Referring to fig. 1-3, a stop valve body capable of distinguishing high and low ends includes a valve body 1, a stop assembly 15 is disposed at the left side inside the valve body 1, the stop assembly 15 includes a stop ring 1501 and a rotating shaft 1502, the outer side of the stop ring 1501 is fixedly connected with the inner wall of the valve body 1, two ends of the rotating shaft 1502 are fixedly connected with the inner wall of the valve body 1, the rotating shaft 1502 is disposed at the left side of the stop ring 1501, a first fan blade 1503 is rotationally connected with the upper end of the rotating shaft 1502, a second fan blade 1504 is rotationally connected with the lower end of the rotating shaft 1502, a valve seat 2 is disposed at the right side inside the valve body 1, a gland 5 is fixedly connected with a packing pressing plate 6 at the middle part of the gland 5, a valve rod 4 is slidingly connected with the middle part of the packing pressing plate 6, the lower end of the valve rod 4 extends into the valve body 1 and is fixedly connected with a valve clack 3, the valve clack 3 is matched with the valve seat 2, an indication mark can be adhered on the surface of the valve body 1, an installer can rapidly judge the high and low ends of the valve body 1, namely the liquid flowing direction, meanwhile, the first fan blade 1504 and the second fan blade 1504 are not completely closed, the first fan blade 1503 and the second fan blade 1502 are rotationally connected with the second fan blade 1504, the second fan blade 1503 are not completely, the liquid backflow position of the rotating shaft, and the position of the rotating shaft is not designed, and the liquid beyond the safety risk is avoided.

The bottom of the gland 5 is fixedly connected with a packing pressing sleeve 7, a packing cavity 8 is formed by the inner wall of the packing pressing sleeve 7 and the outer wall of the valve rod 4, a plurality of packing 9 are filled in the packing cavity 8, and the packing 9 can be asbestos packing, graphite packing or polytetrafluoroethylene V-shaped packing.

The bottom of the packing pressing sleeve 7 is fixedly connected with a lower sealing seat 10, and the inner wall of the lower sealing seat 10 is in sliding connection with the outer wall of the valve rod 4.

The upper end of the gland 5 is fixedly connected with a valve cover 16 through a bolt, the middle part of the valve cover 16 is fixedly connected with an upper sealing seat 17, the inside thread of the upper sealing seat 17 is connected with a threaded rod 13, and the bottom of the threaded rod 13 is fixedly connected with the upper end of the valve rod 4.

The upper surface of the valve cover 16 is fixedly connected with a connecting seat 11, the upper end of the connecting seat 11 is fixedly connected with a threaded sleeve 12, and the interior of the threaded sleeve 12 is in threaded connection with the upper end of the threaded rod 13.

The upper end of the threaded rod 13 extends out of the threaded sleeve 12 and is fixedly connected with a hand wheel 14, the hand wheel 14 can control the valve rod 4 to lift, and the valve rod 4 lifts to drive the valve clack 3 to lift.

The upper end of the valve body 1 is obliquely arranged towards the left side, the whole valve body is of a Y-shaped structure, and an installer can quickly judge the design direction of the stop valve by adopting the Y-shaped structure, so that the installation efficiency can be effectively improved.

Working principle: when the check valve is used, the flange plates at the left end and the right end of the valve body 1 are utilized to connect the check valve in a pipeline, the direction of the flow of liquid in the valve body 1 can be rapidly judged by observing the inclination direction of the upper end of the valve body 1, the installation efficiency is effectively improved, the threaded rod 13 is driven to rotate by rotating the hand wheel 14, the threaded rod 13 moves up and down by utilizing threads between the threaded rod 13 and the threaded sleeve 12, so that the valve rod 4 drives the valve clack 3 to move, the check valve is opened and closed, when the liquid backflow is caused by pressure change in a pipeline, the liquid flowing back pushes the first fan blade 1503 and the second fan blade 1504 to rotate rightwards around the rotating shaft 1502 and finally contact with the blocking ring 1501, and the liquid in the valve body 1 is blocked, so that the liquid backflow is prevented.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a can distinguish stop valve body of high low side, includes valve body (1), its characterized in that: the valve is characterized in that a non-return assembly (15) is arranged on the left side of the inside of the valve body (1), the non-return assembly (15) comprises a blocking ring (1501) and a rotating shaft (1502), the outer side of the blocking ring (1501) is fixedly connected with the inner wall of the valve body (1), two ends of the rotating shaft (1502) are fixedly connected with the inner wall of the valve body (1), the rotating shaft (1502) is arranged on the left side of the blocking ring (1501), a first fan blade (1503) is rotationally connected to the upper end of the rotating shaft (1502), a second fan blade (1504) is rotationally connected to the lower end of the rotating shaft (1502), a valve seat (2) is arranged on the right side of the inside of the valve body (1), a gland (5) is fixedly connected to the upper end of the valve body (1), a packing pressing plate (6) is fixedly connected to the middle of the gland, a valve rod (4) is slidingly connected to the middle of the packing pressing plate (6), and the lower end of the valve rod (4) extends into the inside of the valve body (1) and is fixedly connected with a valve clack (3) to be matched with the valve seat (2).

2. The shut-off valve body of claim 1, wherein the shut-off valve body is configured to distinguish between high and low ends, and wherein: the packing gland is characterized in that the bottom of the gland (5) is fixedly connected with a packing gland sleeve (7), a packing cavity (8) is formed by the inner wall of the packing gland sleeve (7) and the outer wall of the valve rod (4), and a plurality of packing materials (9) are filled in the packing cavity (8).

3. A shut-off valve body of the type of claim 2, wherein the shut-off valve body is distinguishable between high and low ends, and wherein: the packing pressing sleeve (7) is characterized in that the bottom of the packing pressing sleeve is fixedly connected with a lower sealing seat (10), and the inner wall of the lower sealing seat (10) is in sliding connection with the outer wall of the valve rod (4).

4. The shut-off valve body of claim 1, wherein the shut-off valve body is configured to distinguish between high and low ends, and wherein: the upper end of the gland (5) is fixedly connected with a valve cover (16) through a bolt, the middle part of the valve cover (16) is fixedly connected with an upper sealing seat (17), the inner thread of the upper sealing seat (17) is connected with a threaded rod (13), and the bottom of the threaded rod (13) is fixedly connected with the upper end of the valve rod (4).

5. The valve body of the stop valve capable of distinguishing high end from low end according to claim 4, wherein: the upper surface of the valve cover (16) is fixedly connected with a connecting seat (11), the upper end of the connecting seat (11) is fixedly connected with a threaded sleeve (12), and the inside of the threaded sleeve (12) is in threaded connection with the upper end of the threaded rod (13).

6. The valve body of the stop valve capable of distinguishing high end from low end according to claim 4, wherein: the upper end of the threaded rod (13) extends out of the threaded sleeve (12) and is fixedly connected with a hand wheel (14).

7. The shut-off valve body of claim 1, wherein the shut-off valve body is configured to distinguish between high and low ends, and wherein: the upper end of the valve body (1) is obliquely arranged towards the left side, and the valve body is of a Y-shaped structure as a whole.