CN223203716U

CN223203716U - A two-way sealing stop valve

Info

Publication number: CN223203716U
Application number: CN202422173452.1U
Authority: CN
Inventors: 张建飞
Original assignee: Tianjin Exxon Valve Co ltd
Current assignee: Tianjin Exxon Valve Co ltd
Priority date: 2024-09-05
Filing date: 2024-09-05
Publication date: 2025-08-08
Anticipated expiration: 2034-09-05

Abstract

The utility model discloses a two-way sealing stop valve, which comprises a stop valve body, wherein a valve seat is arranged at the top of an outer edge surface in a centering manner, a flange plate is detachably arranged above the valve seat, a boss is arranged at the middle of the upper end surface of the flange plate, a valve rod is rotatably arranged in the boss, a hand wheel is arranged at the top end of the valve rod, two L-shaped baffles are symmetrically arranged in the stop valve body, one ends of the two L-shaped baffles opposite to each other are jointly connected with a connecting block in a structured manner, a water drain hole is arranged in the connecting block in a centering manner, the bottom end of the valve rod extends out of the water drain hole and is fixedly connected with a first sealing plate, a screw tooth is arranged on the outer edge surface of the bottom end of the valve rod, and a screw shaft sleeve is movably arranged above the connecting block at the bottom end of the valve rod.

Description

Two-way sealing stop valve

Technical Field

The utility model belongs to the technical field of stop valves, and particularly relates to a bidirectional sealing stop valve.

Background

The stop valve is also called a stop valve, has the advantages of small friction force, durability, small opening height, easy manufacture and convenient maintenance, is not only suitable for medium and low pressure, but also suitable for high pressure, and is one of the most widely applied valves. In the valve production process, except for the throttle valve, both the cut-off valve and the regulating valve have certain closing tightness, so that the valve needs to be subjected to sealing tests one by one before delivery.

At present, most of the traditional sealing stop valves realize the closing of the valve in a unidirectional stop mode, and the valve can have a certain defect because the impact force of the valve to the valve seat sealing plate is large at the moment of closing and the valve seat sealing plate continuously receives the pressure action of fluid after closing, so that the sealing effect of the sealing plate is reduced to cause leakage for a long time.

Disclosure of utility model

The utility model aims to provide a two-way sealing stop valve, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a two-way sealing stop valve comprises a stop valve body with a valve seat arranged at the top of an outer edge surface in the middle;

The upper end face of disk seat detachably installs the ring flange, the up end of ring flange is constructed with the boss in the middle, rotatable mounting has the valve rod in the boss, the top of valve rod is constructed with the hand wheel, two L type baffles are installed to the inside symmetry structure of stop valve body, two L type baffles are opposite one end constructs jointly and is connected with the connecting block, the hole that drains has been seted up in the connecting block in the middle, the bottom of valve rod extends out the hole that drains and fixedly connected with closing plate one, and is constructed with the lead screw tooth on the bottom outer fringe face of valve rod, the top that the valve rod bottom is located the connecting block is movably provided with the lead screw axle sleeve, but the closing plate second of movable sleeve on the valve rod outer fringe face is connected with to the bottom structure of lead screw axle sleeve, but limit groove has been seted up to one side of L type baffles, but construct the limiting plate of one end movable grafting installation in the limit groove on the outer fringe face of closing plate second, the both sides butt of limiting plate is in the inner wall of limit groove.

Further, sealing pads are fixedly bonded at opposite ends of the first sealing plate and the second sealing plate, sealing grooves are formed in the upper end face and the lower end face of the connecting block, which correspond to the coaxial positions of the water drain holes, the sealing pads are movably abutted to be arranged in the sealing grooves, and an air bag cavity is formed in the sealing pads.

Further, connecting flanges are arranged at two ends of the outer edge surface of the stop valve body, the inner edge surface of the connecting flange is fixedly connected with the outer edge surface of the stop valve body in a structure, and connecting holes are formed in the connecting flange in an annular array.

Further, the flange seat is installed at the top of the outer edge surface of the valve seat, and the lower end surface of the flange plate is detachably connected to the upper end surface of the flange seat.

Further, threaded holes are formed in the flange seat and the flange plate in an annular array, fixing screws are installed in the threaded holes in a threaded fit mode, and fixing nuts used for locking the flange seat and the flange plate are installed on the outer edge surfaces of the two ends of the fixing screws in a threaded fit mode.

Compared with the prior art, the sealing device has the advantages that due to the arrangement of the stop valve body, the valve seat, the flange plate, the valve rod, the hand wheel, the L-shaped baffle plate, the limiting groove, the connecting block, the drain hole, the first sealing plate, the second sealing plate, the screw rod shaft sleeve and the limiting plate, when the stop valve body needs to be sealed, the hand wheel can be held and rotated, the valve rod can be enabled to rotate and ascend to drive the first sealing plate to ascend, in the process, the second sealing plate can be enabled to move downwards through the movable connection of the screw rod shaft sleeve and the valve rod and the movable connection of the limiting plate and the limiting groove, and further the first sealing plate and the second sealing plate can be enabled to move oppositely and seal the drain hole in a sealing mode, so that the effect of bidirectional sealing is achieved, the overlarge impact force of fluid in the valve closing process can be relieved, the sealing effect can be improved through the bidirectional sealing, and the occurrence of leakage condition can be reduced;

Thanks to the arrangement of the sealing gasket and the air bag cavity, the sealing gasket is firstly abutted to the inside of the sealing groove in the process of opposite movement of the sealing plate I and the sealing plate II, and the inner space of the air bag cavity can be compressed in the abutting process, so that the sealing gasket is tightly attached to the sealing groove, abutting seams are avoided, and the sealing effect can be further improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1 of the present utility model;

fig. 3 is an enlarged schematic view of the structure of fig. 2a according to the present utility model.

In the figure, 1, a stop valve body; 2, a connecting flange, 3, a connecting hole, 4, a valve seat, 5, a flange seat, 6, a flange plate, 7, a fixed screw, 8, a fixed nut, 9, a valve rod, 10, a hand wheel, 11, an L-shaped baffle, 12, a limit groove, 13, a connecting block, 14, a water discharging hole, 15, a first sealing plate, 16, a second sealing plate, 17, a sealing gasket, 18, a screw rod shaft sleeve, 19 and a limit plate.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-3, the two-way sealing stop valve comprises a stop valve body 1, a valve seat 4 is centrally arranged at the top of an outer edge surface, a flange 6 is detachably arranged above the valve seat 4, a boss is centrally arranged at the upper end surface of the flange 6, a valve rod 9 is rotatably arranged in the boss, a hand wheel 10 is arranged at the top end of the valve rod 9, two L-shaped baffle plates 11 are symmetrically arranged in the stop valve body 1, a connecting block 13 is jointly connected with opposite ends of the two L-shaped baffle plates 11, a water drain hole 14 is centrally arranged in the connecting block 13, the bottom end of the valve rod 9 extends out of the water drain hole 14 and is fixedly connected with a sealing plate 15, a screw tooth is arranged on the outer edge surface of the bottom end of the valve rod 9, a screw shaft sleeve 18 is movably arranged above the connecting block 13, a sealing plate 16 which is movably sleeved on the outer edge surface of the valve rod 9, a limit groove 12 is formed in one side of the L-shaped baffle plate 11, one end of the outer edge surface of the sealing plate 16 can be movably inserted into a limit plate 19 in the limit groove 12, two sides of the limit plate 19 are abutted against the inner wall 12 of the limit groove 12, the sealing plate 16 is rotatably connected with the sealing plate 16 in a sealing way, and the two-way, when the sealing plate 16 is in the two-way, and the sealing plate 16 is in a sealing way required to be rotatably connected with the sealing plate 16 in the two-way, and the sealing plate 16 is in a sealing sleeve 15, and the two-way, and the sealing plate 9 is in a sealing sleeve 15 is in a sealing way, and the sealing plate 9 is in a sealing way, and a sealing plate 9.

As shown in fig. 2 and fig. 3, the opposite ends of the first sealing plate 15 and the second sealing plate 16 are adhered and fixed with sealing gaskets 17, the upper end face and the lower end face of the connecting block 13 are both provided with sealing grooves corresponding to the coaxial center position of the water drain hole 14, the sealing gaskets 17 are movably abutted and arranged in the sealing grooves, and air bag cavities are formed in the sealing gaskets 17, in the opposite movement process of the first sealing plate 15 and the second sealing plate 16, the sealing gaskets 17 are abutted in the sealing grooves at first, and the inner space of the air bag cavities can be compressed in the abutting process, so that the sealing gaskets 17 are tightly attached to the sealing grooves, and abutting seams are avoided.

As shown in fig. 1, both ends of the outer edge surface of the stop valve body 1 are respectively provided with a connecting flange 2, the inner edge surface of the connecting flange 2 is fixedly connected with the outer edge surface structure of the stop valve body 1, the inside of the connecting flange 2 is provided with a connecting hole 3 in an annular array, the top structure of the outer edge surface of the valve seat 4 is provided with a flange seat 5, the lower end surface of the flange 6 is detachably connected with the upper end surface of the flange seat 5, threaded holes are formed in the flange seat 5 and the flange 6 in an annular array, a fixing screw 7 is mounted in threaded fit in the threaded holes, and fixing nuts 8 for locking the flange seat 5 and the flange 6 are mounted on both end outer edge surfaces of the fixing screw 7 in threaded fit.

The two-way sealing stop valve has the advantages that when the two-way sealing stop valve is used, when the stop valve body 1 needs to be sealed, the hand wheel 10 can be held and rotated, the valve rod 9 is enabled to rotate and ascend and drive the first sealing plate 15 to ascend, in the process, the second sealing plate 16 is enabled to move downwards through the movable connection between the screw rod shaft sleeve 18 and the valve rod 9 and the movable insertion connection between the limiting plate 19 and the limiting groove 12, the first sealing plate 15 and the second sealing plate 16 move in opposite directions and seal the water drain hole 14 in a sealing mode, the two-way sealing effect is achieved, the sealing gasket 17 is firstly abutted to the inside of the sealing groove in the process of moving the first sealing plate 15 and the second sealing plate 16 in opposite directions, the inner space of the air bag cavity is compressed in the abutting process, accordingly the sealing gasket 17 is enabled to be tightly attached to the sealing groove, abutting seams are avoided, the two-way sealing stop valve is reasonable in structure, impact force generated in the valve closing process is facilitated, meanwhile, the sealing effect of valve closing is improved, and the practicability is high.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present 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 without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A two-way sealing stop valve, comprising a stop valve body (1) with a valve seat (4) centrally configured at the top of an outer edge surface;

The invention is characterized in that: a flange (6) is detachably mounted above the valve seat (4); a boss is centrally constructed on the upper end surface of the flange (6); a valve stem (9) is rotatably mounted in the boss; a hand wheel (10) is constructed at the top end of the valve stem (9); two L-shaped baffles (11) are symmetrically mounted inside the shut-off valve body (1); the two facing ends of the two L-shaped baffles (11) are jointly connected with a connecting block (13); a drain hole (14) is centrally opened in the connecting block (13); the bottom end of the valve stem (9) extends through the drain hole (14) and is fixedly connected with a sealing member. A sealing plate (15) is provided, and screw teeth are constructed on the outer edge surface of the bottom end of the valve stem (9). The bottom end of the valve stem (9) is located above the connecting block (13) and is movably provided with a screw shaft sleeve (18). The bottom end of the screw shaft sleeve (18) is connected to a sealing plate (16) that can be movably sleeved on the outer edge surface of the valve stem (9). A limiting groove (12) is provided on one side of the L-shaped baffle (11). A limiting plate (19) is constructed on the outer edge surface of the sealing plate (16) with one end movably inserted into the limiting groove (12). Both sides of the limiting plate (19) are in contact with the inner wall of the limiting groove (12).

2. A two-way sealed stop valve according to claim 1, characterized in that: a sealing gasket (17) is bonded and fixed to the facing ends of the sealing plate 1 (15) and the sealing plate 2 (16), and a sealing groove is provided on the upper end surface and the lower end surface of the connecting block (13) at a coaxial position corresponding to the drain hole (14), and the sealing gasket (17) can be movably abutted in the sealing groove, and an airbag cavity is provided in the sealing gasket (17).

3. A bidirectional sealing stop valve according to claim 1, characterized in that: connecting flanges (2) are provided at both ends of the outer edge surface of the stop valve body (1), the inner edge surface of the connecting flange (2) is structurally connected and fixed to the outer edge surface of the stop valve body (1), and the interior of the connecting flange (2) is provided with connecting holes (3) in an annular array.

4. A two-way sealing stop valve according to claim 1, characterized in that a flange seat (5) is installed on the top structure of the outer edge surface of the valve seat (4), and the lower end surface of the flange plate (6) is detachably connected to the upper end surface of the flange seat (5).

5. A bidirectional sealing stop valve according to claim 4, characterized in that: threaded holes are provided in an annular array in the flange seat (5) and the flange plate (6), and a fixing screw (7) is threadedly installed in the threaded hole, and fixing nuts (8) for locking the flange seat (5) and the flange plate (6) are threadedly installed on the outer edge surfaces of both ends of the fixing screw (7).