Zero-leakage stop valve

Abstract

The utility model discloses a zero leakage stop valve relates to stop valve technical field, including stop valve body, the both ends of stop valve body are provided with connecting pipe, the inside of connecting pipe is inserted and connected with the delivery pipe, the inner wall of two connecting pipe is provided with two annular sealing groove in the surrounding mode, and the annular sealing groove is connected with the delivery pipe. Annular sealing grooves are formed in the two connecting pipes, annular sealing rings are arranged in the two annular sealing grooves, each annular sealing ring is matched with the corresponding conveying pipe, the pipe walls of the two connecting pipes are slidably sleeved with sealing covers, and sealing mechanisms are arranged between the two connecting pipes and the sealing covers; and two first arc-shaped grooves are symmetrically formed in the inner walls of the two sealing covers. According to the stop valve, the two connecting pipes are connected to the outer surfaces of the corresponding conveying pipes in a sleeved mode respectively, then the two annular sealing rings can play a dual-sealing role, and therefore the phenomenon of leakage at the two ends of the stop valve body can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stop valve, concretely relates to zero leakage stop valve. BACKGROUND

[0002] The stop valve is a kind of commonly used cut-off valve, and the opening and closing of the stop valve are controlled by the lifting of the valve element, so the stop valve is widely applied in various pipeline systems, and the stop valve is generally composed of a valve body, a valve seat, a valve core, a valve stem, a valve cover, a driving device and other components.

[0003] Among them, the stop valve with publication number CN221943204U includes a shell, a water inlet pipe, a conical shell, a water outlet pipe, a threaded rod, a rotating handle, a limiting piece, a rotating sealing piece, a blocking piece and a rotating connecting piece;The shell side is connected with the water inlet pipe;The end of the shell away from the water inlet pipe is connected with the water outlet pipe;The height of the water outlet pipe is higher than that of the water inlet pipe;The top of the shell is connected with the conical shell;The end of the conical shell away from the shell is threadedly connected with the threaded rod;The top of the threaded rod is connected with the rotating handle.

[0004] However, the existing stop valve is usually connected by flange, so leakage often occurs after long-term use, and valve leakage not only causes waste of medium, but also may cause safety accidents such as fire, explosion, poisoning, etc., and also pollutes the environment. UTILITY MODEL CONTENTS

[0005] In view of the above problems existing in the prior art stop valve, the utility model is proposed.

[0006] Therefore, the utility model aims at providing zero leakage stop valve, solves the problem that the existing stop valve is usually connected by flange, so leakage often occurs after long-term use, and valve leakage not only causes waste of medium, but also may cause safety accidents such as fire, explosion, poisoning, etc., and also pollutes the environment.

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0008] Zero leakage stop valve, including stop valve body, the both ends of the stop valve body are provided with connecting pipe, the inside of the connecting pipe is inserted with conveying pipe, the inner wall of two connecting pipes is surrounded and is provided with two annular sealing grooves, the inside of two annular sealing grooves is provided with annular sealing ring, each annular sealing ring is matched with corresponding conveying pipe respectively, the pipe wall of two connecting pipes is slidably sleeved with sealing cover, and sealing mechanism is arranged between two connecting pipes and sealing cover, the inner wall of two sealing covers is symmetrically provided with two first arc grooves, and the inside of each first arc groove is provided with fixing mechanism.

[0009] Preferably, the sealing mechanism comprises two baffles, two first sealing gaskets and two second sealing gaskets, the two baffles are fixedly sleeved on the pipe wall of the corresponding conveying pipe, the two first and second sealing gaskets are slidably sleeved on the pipe wall of the corresponding conveying pipe, the two first sealing gaskets are arranged between the corresponding connecting pipe and the conveying pipe, and the two second sealing gaskets are arranged between the corresponding conveying pipe and the sealing cover.

[0010] Preferably, the fixing mechanism comprises a plurality of screws, a plurality of knobs and a plurality of arc-shaped clamping blocks, an inner threaded hole is arranged in the inner side of each first arc-shaped groove, each screw is arranged in the corresponding inner threaded hole, each arc-shaped clamping block is rotationally connected to one end of the corresponding screw, and each knob is fixedly connected to the end, away from the corresponding arc-shaped clamping block, of the corresponding screw.

[0011] Preferably, the rod wall of the connecting pipe is symmetrically provided with two second arc-shaped grooves, and the two second arc-shaped grooves are matched with the corresponding arc-shaped clamping blocks.

[0012] Preferably, the two sides of each arc-shaped clamping block are matched with the inner walls of the corresponding first arc-shaped grooves.

[0013] Preferably, the two sealing covers are matched with the corresponding connecting pipes.

[0014] In the above technical solution, the technical effects and advantages of the utility model are provided.

[0015] 1. In the utility model, two connecting pipes are sleeved on the outer surfaces of the corresponding conveying pipes, and then two annular sealing rings are used to achieve double sealing, so as to prevent the leakage phenomenon at both ends of the stop valve body.

[0016] 2. In the utility model, when the connecting pipe is inserted into the outer surface of the conveying pipe, the two first sealing gaskets can be extruded to improve the sealing effect of the device, then the two sealing covers are slid to be sleeved on the pipe wall of the corresponding connecting pipe, and then the two second sealing gaskets are extruded, so as to further improve the sealing effect of the device. DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0019] Figure 2The utility model discloses a Figure 1 The front view of the sectional view of the utility model discloses a

[0020] Figure 3 The utility model discloses a Figure 2 The schematic diagram of the three-dimensional structure of the utility model discloses a

[0021] Mark explanation:

[0022] 1, stop valve, 2, connecting pipe, 3, conveying pipe, 4, sealing cover, 5, baffle, 6, first sealing pad, 7, second sealing pad, 8, screw rod, 9, knob, 10, arc clamping block, 11, annular sealing ring. Specific implementation

[0023] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be introduced further in detail below with the accompanying drawings.

[0024] The utility model discloses a zero leakage stop valve.

[0025] The utility model provides a zero leakage stop valve as Figures 1-3 The utility model discloses a zero leakage stop valve as shown in the figure, the both ends of stop valve body 1 are provided with connecting pipe 2, the inside of connecting pipe 2 is inserted with conveying pipe 3, the inner wall of two connecting pipe 2 is provided with two annular sealing grooves, the inside of two annular sealing grooves is provided with annular sealing ring 11, and each annular sealing ring 11 is matched with corresponding conveying pipe 3 respectively, the pipe wall of two connecting pipe 2 is slidably sleeved with sealing cover 4, and sealing mechanism is arranged between two connecting pipe 2 and sealing cover 4, the inner wall of two sealing cover 4 is symmetrically provided with two first arc grooves, the inside of each first arc groove is provided with fixed mechanism, and two sealing cover 4 are matched with corresponding connecting pipe 2 respectively.

[0026] When installing stop valve body 1, two connecting pipe 2 are sleeved on the outer surfaces of corresponding conveying pipe 3 respectively, then two annular sealing rings 11 can play the role of double sealing, so that the phenomenon of leakage can be prevented at the both ends of stop valve body 1.

[0027] In order to further improve the sealing effect, as Figures 1-2 The sealing mechanism includes two baffles 5, two first sealing pads 6 and two second sealing pads 7, two baffles 5 are fixedly sleeved on the pipe wall of corresponding conveying pipe 3, two first sealing pads 6 and second sealing pads 7 are slidably sleeved on the pipe wall of corresponding conveying pipe 3, two first sealing pads 6 are arranged between corresponding connecting pipe 2 and conveying pipe 3 respectively, and two second sealing pads 7 are arranged between corresponding conveying pipe 3 and sealing cover 4 respectively.

[0028] When the connecting pipe 2 is inserted into the outer surface of the conveying pipe 3, the two first sealing pads 6 can be extruded to improve the sealing effect of the device, then the two sealing covers 4 are slid to be sleeved on the pipe walls of the corresponding connecting pipes 2, then the two second sealing pads 7 are extruded, so that the sealing effect of the device can be further improved.

[0029] In order to fix the sealing cover 4, as shown in the drawings, the fixing mechanism comprises a plurality of screw rods 8, a plurality of knobs 9 and a plurality of arc-shaped clamping blocks 10, an inner threaded hole is arranged in the inside of each first arc-shaped slot, each screw rod 8 is arranged in the inside of the corresponding inner threaded hole, each arc-shaped clamping block 10 is rotationally connected to one end of the corresponding screw rod 8, and each knob 9 is fixedly connected to the end of the corresponding screw rod 8 away from the corresponding arc-shaped clamping block 10. Figures 1-3

[0030] Rotating the two knobs 9 can make the screw rods 8 rotate, then the two arc-shaped clamping blocks 10 can be moved into the corresponding second arc-shaped slots, so that the two sealing covers 4 can be fixed, and the sealing valve can be prevented from leaking due to loosening of the two sealing covers 4.

[0031] The above only describes some exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled in the art, under the condition that the spirit and scope of the utility model are not deviated, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.​

Claims

1. Zero leakage stop valve comprising a stop valve body (1), characterized in that, Both ends of the stop valve body (1) are provided with connecting pipes (2), the interiors of the connecting pipes (2) are respectively inserted with conveying pipes (3), the inner walls of the two connecting pipes (2) are respectively surrounded with two annular sealing grooves, the interiors of the two annular sealing grooves are respectively provided with annular sealing rings (11), each annular sealing ring (11) is matched with the corresponding conveying pipe (3), the pipe walls of the two connecting pipes (2) are respectively slidably sleeved with sealing covers (4), sealing mechanisms are arranged between the two connecting pipes (2) and the sealing covers (4), the inner walls of the two sealing covers (4) are symmetrically provided with two first arc-shaped grooves, the interiors of each first arc-shaped groove are respectively provided with fixing mechanisms.

2. The zero-leak shut-off valve of claim 1, wherein, The sealing mechanism comprises two baffles (5), two first sealing pads (6) and two second sealing pads (7), the two baffles (5) are fixedly sleeved on the pipe walls of the corresponding conveying pipes (3), the two first sealing pads (6) and the second sealing pads (7) are respectively slidably sleeved on the pipe walls of the corresponding conveying pipes (3), the two first sealing pads (6) are respectively arranged between the corresponding connecting pipes (2) and the conveying pipes (3), and the two second sealing pads (7) are respectively arranged between the corresponding conveying pipes (3) and the sealing covers (4).

3. The zero-leak shut-off valve of claim 1, wherein, The fixing mechanism comprises a plurality of screw rods (8), a plurality of knobs (9) and a plurality of arc-shaped clamping blocks (10), the interior of each first arc-shaped groove is provided with an internally threaded hole, each screw rod (8) is arranged in the corresponding internally threaded hole, each arc-shaped clamping block (10) is rotatably connected to one end of the corresponding screw rod (8), and each knob (9) is fixedly connected to the end, away from the corresponding arc-shaped clamping block (10), of the corresponding screw rod (8).

4. The zero-leak shut-off valve of claim 1, wherein, The rod walls of the connecting pipes (2) are symmetrically provided with two second arc-shaped grooves, and the two second arc-shaped grooves are respectively matched with the corresponding arc-shaped clamping blocks (10).

5. The zero-leak shut-off valve of claim 3, wherein, The two sides of each arc-shaped clamping block (10) are respectively matched with the inner walls of the corresponding first arc-shaped grooves.

6. The zero-leak shut-off valve of claim 1, wherein, The two sealing covers (4) are respectively matched with the corresponding connecting pipes (2).

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