Butterfly valve capable of preventing deviation of sealing rubber ring

Abstract

The utility model discloses a butterfly valve capable of preventing a sealing rubber ring from shifting, which relates to the technical field of valve bodies and comprises a valve body, a connecting pipe arranged in the middle of the top end of the valve body, a connecting shaft rotatably connected in the connecting pipe, a valve plate arranged at the bottom of the connecting shaft, a connecting groove arranged on the surface of the valve plate, and a connecting column arranged in the middle of the inner wall of the connecting groove. A mounting plate is arranged at one end of the connecting column, a limiting ring is rotationally matched with the surface of the mounting plate, and a limiting block is arranged on one side of the surface of the limiting ring; the sealing rubber ring has the advantages that clamping and limiting of the sealing rubber ring body are achieved through matching of the limiting block and the valve plate, and the sealing rubber ring body can be effectively prevented from deviating in the rotating and adjusting process of the valve plate through multi-point supporting of the limiting block; and meanwhile, the rubber block plays a better role in buffering and protecting the installation of the sealing rubber ring body, the integrity of the sealing rubber ring body can be effectively guaranteed in a clamping and limiting mode, and the service life of the sealing rubber ring body is prolonged.

Description

Technical Field

[0001] The utility model relates to a butterfly valve, in particular to a butterfly valve capable of preventing a sealing rubber ring from deflecting, and belongs to the technical field of valves. Background Art

[0002] A butterfly valve, also called a flap valve, is a regulating valve with a simple structure. It can be used for the on-off control of low-pressure pipeline media. A butterfly valve refers to a valve whose closing member (valve disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve opening and closing. A sealing ring is installed on the surface of the valve disc, thereby improving the sealing between the valve disc and the valve body. When the valve disc moves, the sealing ring will drive the sealing ring to rotate together. The sealing rubber ring may deviate and slide under the drive of the valve disc, causing the sealing rubber ring to deviate under the torque force of the butterfly plate, etc., which greatly reduces the sealing performance in the later stage and brings great inconvenience to the user. Therefore, a butterfly valve that prevents the sealing rubber ring from deviating is needed;

[0003] Among them, the "a butterfly valve for preventing the displacement of the sealing rubber ring" disclosed in the application number "CN202322234101.2" is also an increasingly mature technology, which includes a fixing rod and a connecting frame. The outer surface of the connecting frame is connected to a connecting pipe, and a transmission rod is passed through the interior of the connecting pipe. The outer surface of the transmission rod is rotatably connected to the connecting frame, and the outer surface of the transmission rod is sleeved with a rubber plate, and an operating block is installed on the top of the transmission rod. The butterfly valve for preventing the displacement of the sealing rubber ring moves inward through the plug-in hole and is inserted into the rubber plate so that the ball contacts the connecting frame, and then the fixing pin is rotated clockwise to fix the connecting block to the upper surface of the rubber plate, thereby making it easier for operators to disassemble the components in the device, shortening the time required for operators to disassemble the components in the device, and preventing the situation where operators find it difficult to replace components after they are damaged, further improving the work efficiency of operators in the process of disassembling components in the device;

[0004] However, the above method still has the following defects in actual use: only the two sides are supported and limited, the supporting points of the sealing ring are insufficient, and the bottom is prone to deviation. At the same time, holes are set on the surface of the sealing ring. The holes on the surface of the sealing ring destroy the integrity. During frequent rotation, the area around the connecting hole is prone to deformation and damage, which can easily affect the service life of the sealing ring. Utility Model Content

[0005] The purpose of the utility model is to provide a butterfly valve that prevents the sealing rubber ring from shifting, so as to solve the problem proposed in the above-mentioned background technology that only the two sides are supported and limited, the supporting points of the sealing ring are insufficient, and holes are provided on the surface of the sealing ring, which makes it easy for the connection hole to be deformed and damaged during frequent rotation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a butterfly valve for preventing the deviation of a sealing rubber ring, comprising a valve body, a connecting pipe is arranged in the middle of the top end of the valve body, a connecting shaft is rotatably connected to the inside of the connecting pipe, a valve plate is arranged at the bottom of the connecting shaft, a connecting groove is arranged on the surface of the valve plate, a connecting column is arranged in the middle of the inner wall of the connecting groove, a mounting plate is arranged at one end of the connecting column, a limiting ring is rotatably fitted on the surface of the mounting plate, a limiting block is arranged on one side of the surface of the limiting ring, and a plurality of limiting blocks are arranged, a sealing rubber ring body is sleeved on the other side of the surface of the limiting ring, and a fixing component is arranged on the inner wall of the limiting ring.

[0007] As a preferred technical solution of the utility model, a rubber block is arranged on the surface of the limit block, and the surface of the rubber block is in contact with the surface of the sealing rubber ring body.

[0008] As a preferred technical solution of the utility model, a gear is arranged on the top of the connecting shaft, and a push rod is arranged on the top end of the connecting shaft.

[0009] As a preferred technical solution of the utility model, the fixing assembly includes two fixing blocks, which are respectively arranged on both sides of the inner wall of the limiting ring, and both sides of the mounting plate are provided with mounting grooves matching the fixing blocks, and the middle part of each fixing block is provided with a first fixing hole, and both sides of the middle part of the mounting plate are provided with second fixing holes matching the first fixing holes.

[0010] As a preferred technical solution of the present invention, each of the first fixing holes is threadedly connected to the corresponding second fixing hole via a bolt.

[0011] As a preferred technical solution of the utility model, flanges are provided at both ends of the valve body, and a mounting hole is provided on the surface of each flange.

[0012] As a preferred technical solution of the utility model, a first marking groove is provided in the middle of the mounting plate, and a second marking groove is provided on the front end surface of the limiting ring.

[0013] Compared with the related art, the butterfly valve for preventing the sealing rubber ring from deflecting provided by the utility model has the following beneficial effects:

[0014] In order to prevent the sealing rubber ring body from shifting during the rotation and adjustment of the valve plate, the sealing rubber ring body is clamped and limited by the cooperation of the limit block and the valve plate. The multi-point support of the limit block can effectively prevent the sealing rubber ring body from shifting during the rotation and adjustment of the valve plate. At the same time, the rubber block plays a good buffering and protection role for the installation of the sealing rubber ring body. The clamping and limiting method can effectively ensure the integrity of the sealing rubber ring body and improve the service life of the sealing rubber ring body. At the same time, the rotation connection method of the limit ring also facilitates the maintenance and replacement of the sealing rubber ring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is one of the explosion structure schematic diagrams of the utility model;

[0017] Figure 3 This is the second schematic diagram of the explosion structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the mounting plate of the utility model;

[0019] Figure 5 For this utility model Figure 4 A schematic diagram of the enlarged structure at point A;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the mounting plate of the utility model.

[0021] In the figure: 1. valve body; 111. flange; 2. connecting pipe; 3. connecting shaft; 31. gear; 32. push rod; 4. valve plate; 5. connecting groove; 51. connecting column; 6. mounting plate; 61. first marking groove; 7. limiting ring; 71. second marking groove; 8. limiting block; 81. sealing rubber ring body; 810. rubber block; 9. fixing assembly; 91. fixing block; 92. mounting groove; 93. first fixing hole; 94. second fixing hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-6The utility model provides a butterfly valve for preventing the deviation of a sealing rubber ring, comprising a valve body 1, a connecting pipe 2 is fixedly arranged in the middle of the top of the valve body 1, a connecting shaft 3 is rotatably connected inside the connecting pipe 2, a valve plate 4 is fixedly arranged at the bottom of the connecting shaft 3, the valve plate 4 is rotatably matched with the inner wall of the valve body 1, a connecting groove 5 is opened on the surface of the valve plate 4, a connecting column 51 is fixedly arranged in the middle of the inner wall of the connecting groove 5, a mounting plate 6 is fixedly arranged at one end of the connecting column 51, a limiting ring 7 is rotatably matched on the surface of the mounting plate 6, a limiting block 8 is arranged on one side of the surface of the limiting ring 7, and a plurality of limiting blocks 8 are arranged, a sealing rubber ring body 81 is sleeved on the other side of the surface of the limiting ring 7, a circular structure composed of a plurality of limiting blocks 8 plays a role of limiting support for the surface of the sealing rubber ring body 81, and if the size of the circular structure composed of a plurality of limiting blocks 8 is smaller than the size of the valve plate 4, if a plurality of limiting blocks 8 will not hinder the rotation of the valve plate 4, a fixing component 9 is arranged on the inner wall of the limiting ring 7.

[0024] A rubber block 810 is fixedly arranged on the surface of the limit block 8, and the surface of the rubber block 810 fits the surface of the sealing rubber ring body 81. The limit block 8 contacts the surface of the sealing rubber ring body 81 through the rubber block 810, and the rubber block 810 plays a good role in buffering protection.

[0025] A gear 31 is fixedly provided on the top of the connecting shaft 3, and the gear 31 is convenient for meshing connection with external mechanical equipment. A push rod 32 is fixedly provided on the top of the connecting shaft 3, and the push rod 32 is convenient for manually adjusting the connecting shaft 3 to rotate.

[0026] The fixing assembly 9 includes two fixing blocks 91, and the two fixing blocks 91 are respectively fixed on both sides of the inner wall of the limiting ring 7. Both sides of the mounting plate 6 are provided with mounting grooves 92 matching the fixing blocks 91. The middle of each fixing block 91 is provided with a first fixing hole 93, and both sides of the middle of the mounting plate 6 are provided with second fixing holes 94 matching the first fixing holes 93. When fixing, the fixing blocks 91 on both sides of the inner wall of the limiting ring 7 are inserted into the mounting grooves 92 on both sides of the middle of the mounting plate 6. After the insertion is completed, the limiting ring 7 is rotated to 90 degrees so that the positions of the first fixing hole 93 and the second fixing hole 94 correspond.

[0027] Each first fixing hole 93 is respectively connected to the corresponding second fixing hole 94 via a bolt thread connection, and the bolt thread connection between the corresponding first fixing hole 93 and the second fixing hole 94 limits the rotation of the limit ring 7, thereby completing the installation of the limit ring 7.

[0028] Flanges 111 are fixedly provided at both ends of the valve body 1 . A mounting hole is provided on the surface of each flange 111 . The valve body 1 is installed and fixed through the mounting holes provided on the surface of the flange 111 .

[0029] A first marking groove 61 is provided in the middle of the mounting plate 6, and a second marking groove 71 is provided on the front end face of the limiting ring 7. The second marking groove 71 facilitates observation of the rotation angle of the limiting ring 7, facilitates determination of the position of the first fixing hole 93, and improves the installation efficiency of the limiting ring 7 and the sealing rubber ring body 81.

[0030] When in use, first install the sealing rubber ring body 81, and then sleeve the sealing rubber ring body 81 to be installed on the other side of the surface of the limit ring 7. In order to prevent the sealing rubber ring body 81 from deviating during the rotation and adjustment of the valve plate 4, a plurality of limit blocks 8 are arranged on one side of the surface of the limit ring 7. The circular structure composed of the plurality of limit blocks 8 plays a role of limiting support for the surface of the sealing rubber ring body 81. If the size of the circular structure composed of the limit blocks 8 is smaller than the size of the valve plate 4, if the limit blocks 8 do not hinder the rotation of the valve plate 4, the limit blocks 8 will not hinder the rotation of the valve plate 4. The rubber block 810 on the surface provides a good buffering and protective effect for the sealing rubber ring body 81. When installing the limit ring 7, the fixing blocks 91 on both sides of the inner wall of the limit ring 7 are inserted into the mounting grooves 92 on both sides of the middle part of the mounting plate 6. After the insertion is completed, the limit ring 7 is rotated to 90 degrees. The second marking groove 71 is used to conveniently observe the rotation angle of the limit ring 7 and to conveniently determine the position of the first fixing hole 93. The bolt is threadedly connected between the corresponding first fixing hole 93 and the second fixing hole 94 to limit the rotation of the limit ring 7 and complete the installation of the limit ring 7.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve for preventing a sealing rubber ring from deflecting, comprising a valve body (1), characterized in that: A connecting pipe (2) is provided in the middle of the top of the valve body (1), and a connecting shaft (3) is rotatably connected inside the connecting pipe (2). A valve plate (4) is provided at the bottom of the connecting shaft (3). A connecting groove (5) is provided on the surface of the valve plate (4), and a connecting column (51) is provided in the middle of the inner wall of the connecting groove (5). A mounting plate (6) is provided at one end of the connecting column (51), and a limit ring (7) is rotatably matched with the surface of the mounting plate (6). A limit block (8) is provided on one side of the surface of the limit ring (7), and a plurality of limit blocks (8) are provided. A sealing rubber ring body (81) is sleeved on the other side of the surface of the limit ring (7), and a fixing component (9) is provided on the inner wall of the limit ring (7).

2. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: A rubber block (810) is provided on the surface of the limiting block (8), and the surface of the rubber block (810) is in contact with the surface of the sealing rubber ring body (81).

3. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: A gear (31) is arranged at the top of the connecting shaft (3), and a push rod (32) is arranged at the top end of the connecting shaft (3).

4. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: The fixing assembly (9) comprises two fixing blocks (91), the two fixing blocks (91) are respectively arranged on both sides of the inner wall of the limiting ring (7), both sides of the mounting plate (6) are provided with mounting grooves (92) matching the fixing blocks (91), the middle of each fixing block (91) is provided with a first fixing hole (93), and both sides of the middle of the mounting plate (6) are provided with second fixing holes (94) matching the first fixing holes (93).

5. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 4, characterized in that: Each of the first fixing holes (93) is threadedly connected to the corresponding second fixing hole (94) via a bolt.

6. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: Both ends of the valve body (1) are provided with flanges (111), and a mounting hole is provided on the surface of each flange (111).

7. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: A first marking groove (61) is provided in the middle of the mounting plate (6), and a second marking groove (71) is provided on the front end surface of the limiting ring (7).

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