Sediment-proof butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a sediment-proof butterfly valve which comprises a valve body, a filter screen is arranged in the valve body, a fixing pipe is arranged on one side of the valve body, a discharging hole is formed in the fixing pipe, a first sleeve is arranged at the bottom of the discharging hole, and a second sleeve is arranged at the bottom of the fixing pipe. A first sealing column and a second sealing column are arranged in the first sleeve and the second sleeve respectively, rack plates are arranged at the bottom end of the first sealing column and the bottom end of the second sealing column, a gear is connected between the two rack plates in an engaged mode, and a discharging pipe is arranged in the middle of the first sleeve; through rotation of an arranged gear and cooperation of gear plates connected with the two sides in a meshed mode, two rack plates can synchronously move downwards and upwards, then a first sealing column in a first sleeve is driven to move downwards till the first sealing column moves to the bottom of a discharging pipe, and silt accumulated in the first sleeve is conveniently cleaned and discharged; and the butterfly valve does not need to be integrally disassembled to clean silt, so that the butterfly valve is convenient to use, and the use convenience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a mud and sand prevention butterfly valve. Background Art

[0002] A butterfly valve, also called a flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. A butterfly valve is a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media, and mainly plays a role of cutting off and throttling in pipelines. The opening and closing part of a butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating.

[0003] Among them, the "anti-silt butterfly valve" disclosed in the application number "CN202021918059.6" "comprises a butterfly valve housing, a flange is fixedly installed on the left and right ends of the butterfly valve housing, a U-shaped frame is fixedly installed on the upper middle side of the outer surface of the butterfly valve housing, a butterfly valve device is arranged in the middle of the inner cavity of the butterfly valve housing, an extrusion device is arranged in the right part of the inner cavity of the butterfly valve housing, a fixed plate is fixedly installed in the right part of the inner cavity of the butterfly valve housing, a limited position hole is provided in the middle part of the right end of the fixed plate, and a filtering device is arranged in the right part of the inner cavity of the butterfly valve housing". In the utility model, a flexible filter net is provided to play a filtering and isolation role, so as to prevent silt from entering the left side of the flexible filter net and ensure the normal transportation of the liquid. At the same time, the middle part of the flexible filter net is squeezed when the extrusion rod is driven to move to the right by the connecting plate. Since the flexible filter net is flexible, the flexible filter net is deformed at this time, and the silt particles on the surface of the flexible filter net fall off, thereby preventing the blockage of the mesh of the flexible filter net and ensuring the use effect of the butterfly valve.

[0004] However, the above method still has the following defects: when the butterfly valve plate is driven by the driving motor to rotate, it contacts the left side of the connecting plate, and squeezes and pushes the connecting plate and the squeezing rod to remove the mud and sand on the surface of the flexible filter screen, thereby achieving a blocking effect. However, when cleaning and discharging the mud and sand generated inside the butterfly valve, the butterfly valve needs to be disassembled as a whole, which is not convenient for cleaning and discharging the mud and sand accumulated inside, and the convenience of use is poor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a mud and sand proof butterfly valve, which is convenient for cleaning and discharging mud and sand accumulated inside a sleeve. There is no need to disassemble the butterfly valve as a whole to clean the mud and sand, which facilitates the use of the butterfly valve and has the advantages of good convenience of use, thus solving the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solutions: a mud and sand proof butterfly valve, comprising a valve body, a filter screen is arranged inside the valve body, a fixed tube is arranged on one side of the valve body, a discharge hole is opened inside the fixed tube, a sleeve 1 is arranged at the bottom of the discharge hole, a sleeve 2 is arranged at the bottom of the fixed tube, a sealing column 1 and a sealing column 2 are arranged inside the sleeve 1 and inside the sleeve 2 respectively, a rack plate is arranged at the bottom end of the sealing column 1 and the bottom end of the sealing column 2, a gear is meshedly connected between the two rack plates, a discharge pipe is arranged in the middle of the sleeve 1, a sealing assembly is arranged inside the fixed tube, a round plate is arranged at the bottom of the sleeve 1 through a support block, and an adjusting assembly is arranged inside the round plate.

[0007] As a preferred technical solution of the utility model, a clamping block is provided at the top and bottom of the filter screen, a clamping groove matching the clamping block is opened inside the valve body, and the clamping block is engaged with the clamping groove, and a pull cap for disassembling the filter screen is provided on the surface of the filter screen.

[0008] As a preferred technical solution of the utility model, two second clamping blocks are symmetrically provided at one end of the fixed pipe facing the filter screen, and the second clamping block is in contact with the first clamping block.

[0009] As a preferred technical solution of the utility model, a plurality of bolt and nut groups are provided between the valve body and the fixed pipe, and a sealing gasket is provided between the valve body and the fixed pipe.

[0010] As a preferred technical solution of the utility model, the sealing assembly includes a circular plate, which is fixedly installed inside the fixed tube, a sealing groove matching the second sealing column is opened on the side of the circular plate facing the filter screen, and a through hole is opened in the middle of the circular plate.

[0011] As a preferred technical solution of the utility model, the adjusting assembly includes a rotating rod, which is rotatably arranged inside the circular plate, and one end of the rotating rod is fixedly connected to one side of the gear, one end of the rotating rod passes through the circular plate and is fixedly connected to a worm gear arranged outside the circular plate, two support plates are symmetrically arranged on the surface of the circular plate, a worm is rotatably arranged between the two support plates, and the worm wheel is meshingly connected to the worm.

[0012] As a preferred technical solution of the utility model, an adjusting handle is provided at one end of the worm, and an anti-slip groove is provided on the surface of the adjusting handle.

[0013] As a preferred technical solution of the utility model, a mounting ring is provided at one end of the fixed pipe away from the valve body, and a plurality of mounting holes are evenly opened on the surface of the mounting ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The anti-mud and sand butterfly valve can make the two rack plates move downward and upward synchronously through the rotation of the set gear and the gear plates meshing on both sides, thereby driving the sealing column 1 inside the sleeve 1 to move downward until it moves to the bottom of the discharge pipe, which is convenient for cleaning and discharging the mud and sand accumulated inside the sleeve 1. There is no need to disassemble the butterfly valve as a whole to clean the mud and sand, which is convenient for the use of the butterfly valve and is easy to use; at the same time, the rotation of the gear drives the sealing column 2 inside the sleeve 2 to move upward, and cooperates with the set sealing component, so as to facilitate the interception of the inside of the fixed pipe. On the one hand, the mud and sand are quickly discharged through the sleeve 1 and the discharge pipe by water pressure, and on the other hand, the valve body is controlled to be sealed, which is convenient for separating the set fixed pipe from the valve body, and convenient for regular maintenance or replacement of the filter screen set inside the valve body, which is more convenient to use.

[0016] 2. The anti-silt butterfly valve is provided with an adjustment component, and the adjustment handle is used to drive the rotation of the worm and the worm wheel, and then the rotating rod and the gear are driven to rotate forward and reversely, so that the staff can use the forward and reverse rotation of the adjustment handle to quickly discharge the silt inside the fixed pipe, and the use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the fixed pipe of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixed pipe of the utility model;

[0020] Figure 4 For this utility model Figure 3 A is an enlarged structural diagram;

[0021] Figure 5 It is a schematic diagram of the exploded structure of the circular plate of the utility model;

[0022] Figure 6 For this utility model Figure 5 The enlarged structural diagram at B in FIG.

[0023] In the figure: 1. valve body; 2. filter screen; 3. fixing pipe; 4. discharge hole; 5. sleeve one; 6. sleeve two; 7. discharge pipe; 8. sealing column one; 9. sealing assembly; 901. circular plate; 902. sealing groove; 903. through hole; 904. clamping block one; 905. clamping block two; 906. mounting ring; 10. circular plate; 11. adjustment assembly; 1101. rotating rod; 1102. worm gear; 1103. support plate; 1104. worm; 1105. adjusting handle; 12. sealing column two; 13. rack plate; 14. gear. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1:

[0026] See also Figure 1-6The utility model provides a mud and sand proof butterfly valve, including a valve body 1, a filter screen 2 is arranged inside the valve body 1, which is convenient for filtering mud and sand, preventing it from entering the interior of the valve body 1 and causing the normal use of the valve body 1, a fixed pipe 3 is arranged on one side of the valve body 1, and a discharge hole 4 is opened inside the fixed pipe 3, which is convenient for filtering mud and sand through the filter screen 2, and the mud and sand are dropped through the discharge hole 4, which is convenient for subsequent cleaning, a sleeve 1 5 is arranged at the bottom of the discharge hole 4, a sleeve 2 6 is arranged at the bottom of the fixed pipe 3, and the interior of the sleeve 1 5 and the interior of the sleeve 2 6 are respectively A sealing column 18 and a sealing column 2 12 are provided. The sealing column 18 is provided to facilitate sealing the sleeve 15. The sealing column 2 12 is provided to facilitate the flow interception and sealing of the interior of the fixed pipe 3, which is convenient for disassembly or maintenance of the filter screen 2 in the later stage. The bottom ends of the sealing column 18 and the sealing column 2 12 are provided with a rack plate 13. A gear 14 is meshed and connected between the two rack plates 13. Through the rotation of the provided gear 14, the two rack plates 13 can be synchronized to move downward and upward in coordination with the meshed rack plates 13 on both sides, thereby driving the sleeve The sealing column 18 inside the sleeve 15 moves downward until it moves to the bottom of the discharge pipe 7, so as to facilitate the cleaning and discharge of the sediment accumulated inside the sleeve 15. There is no need to disassemble the butterfly valve as a whole to clean the sediment, which is convenient for the use of the butterfly valve and has good convenience. At the same time, the rotation of the gear 14 drives the sealing column 12 inside the sleeve 16 to move upward, and cooperates with the sealing component 9 to facilitate the interception of the interior of the fixed pipe 3. On the one hand, the sediment is quickly discharged through the sleeve 15 and the discharge pipe 7 by water pressure, and on the other hand, it is convenient to control the valve body 1 to enter The fixed pipe 3 is sealed to facilitate separation of the fixed pipe 3 from the valve body 1, and the filter screen 2 arranged inside the valve body 1 is convenient for regular maintenance or replacement, which is more convenient to use. A discharge pipe 7 is arranged in the middle of the sleeve 5 to facilitate discharge of mud and sand. A sealing component 9 is arranged inside the fixed pipe 3 to facilitate cooperation with the sealing column 12 to intercept the flow inside the fixed pipe 3. A circular plate 10 is arranged at the bottom of the sleeve 5 through a support block, and an adjusting component 11 is arranged inside the circular plate 10. Through the arranged adjusting component 11, the arranged gear 14 is convenient to be rotated and locked.

[0027] The sealing assembly 9 includes a circular plate 901, which is fixedly mounted inside the fixed tube 3. A sealing groove 902 matching the sealing column 12 is provided on the side of the circular plate 901 facing the filter screen 2, and a through hole 903 is provided in the middle of the circular plate 901, so as to facilitate sealing and intercepting flow, and the use is convenient.

[0028] The top and bottom of the filter 2 are both provided with a card block 904, and a card slot matching the card block 904 is provided inside the valve body 1, and the card block 904 is engaged with the card slot, and a pull cap for disassembling the filter 2 is provided on the surface of the filter 2, so as to facilitate the disassembly and maintenance of the card block 904;

[0029] Two second clamping blocks 905 are symmetrically arranged at one end of the fixed pipe 3 facing the filter screen 2. The second clamping block 905 is in contact with the first clamping block 904, so that the second clamping block 905 can be used to abut against the first clamping block 904 to limit the position.

[0030] A plurality of bolt and nut groups are arranged between the valve body 1 and the fixed pipe 3, and a sealing gasket is arranged between the valve body 1 and the fixed pipe 3, so as to facilitate the connection and fixation between the valve body 1 and the fixed pipe 3 through the bolt and nut groups, and play a sealing role at the same time.

[0031] Embodiment 2:

[0032] The adjusting component 11 includes a rotating rod 1101, which is rotatably arranged inside the circular plate 10, and one end of the rotating rod 1101 is fixedly connected to one side of the gear 14, one end of the rotating rod 1101 penetrates the circular plate 10 and is fixedly connected to a worm gear 1102 arranged outside the circular plate 10, two supporting plates 1103 are symmetrically arranged on the surface of the circular plate 10, a worm 1104 is rotatably arranged between the two supporting plates 1103, and the worm gear 1102 is meshedly connected with the worm gear 1104. By rotating the worm gear 1104, the worm gear 1102 is driven to rotate, so that the gear 14 can rotate in the forward and reverse directions, and has a locking function;

[0033] An adjustment handle 1105 is provided at one end of the worm 1104, and an anti-slip groove is provided on the surface of the adjustment handle 1105, so that the staff can use the adjustment handle 1105 to drive the worm 1104 to rotate forward and reverse, which is convenient for operation;

[0034] An installation ring 906 is provided at one end of the fixed pipe 3 away from the valve body 1, and a plurality of installation holes are evenly opened on the surface of the installation ring 906, so as to facilitate the matching of the installation ring 906 and the installation holes, and to facilitate the matching of the relevant pipeline connection and fixation.

[0035] When in use, first install the end of the butterfly valve with the relevant pipeline, and cooperate with the installation ring 906 and the installation hole to install the end of the fixed pipe 3. The filter screen 2 provided inside the valve body 1 can release the mud and sand from the valve body 1 to ensure the normal use of the butterfly valve. The mud and sand are filtered through the filter screen 2, and the mud and sand enter the interior of the sleeve 5 through the discharge hole 4. When the mud and sand need to be cleaned, the staff can turn the set adjustment handle 1105 to drive the set worm 1104 to rotate, and cooperate with the meshing worm wheel 1102 to make the rotating rod 1101 and the gear 14 rotate synchronously, and cooperate with the two meshing rack plates 13 , so that the rack plate 13 inside the sleeve 1 5 moves downward, that is, the rack plate 13 inside the sleeve 2 6 moves upward, that is, the sealing column 1 8 moves downward, and the sealing column 2 12 moves upward. When the sealing column 1 8 moves to the bottom of the discharge pipe 7, under the action of water pressure, the mud and sand inside the sleeve 1 5 are quickly discharged. During this process, the sealing column 2 12 at the sleeve 2 6 seals the sealing groove 902 of the circular plate 901. After the mud and sand are discharged, the adjustment knob 1105 can be reversely controlled to control the sealing column 1 8 to seal the sleeve 1 5, so that the sealing column 2 12 separates from the sealing groove 902, and the valve body 1 continues to be used normally;

[0036] When the filter 2 needs regular maintenance after being used for a long time, the adjustment handle 1105 can be controlled to rotate again, so that the sealing column 12 can seal the sealing groove 902 to intercept the flow, and the valve body 1 can be controlled to intercept the water flow. The bolt and nut set, in conjunction with the relevant pipeline, which can be a hose, can be used to separate the fixed pipe 3 and the valve body 1, and the filter 2 that is installed in the card-type setting can be disassembled, removed, replaced and maintained.

[0037] Although 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 mud and sand prevention butterfly valve, comprising a valve body (1), characterized in that: A filter screen (2) is provided inside the valve body (1), a fixed tube (3) is provided on one side of the valve body (1), a discharge hole (4) is provided inside the fixed tube (3), a sleeve 1 (5) is provided at the bottom of the discharge hole (4), a sleeve 2 (6) is provided at the bottom of the fixed tube (3), a sealing column 1 (8) and a sealing column 2 (12) are provided inside the sleeve 1 (5) and inside the sleeve 2 (6) respectively, a rack plate (13) is provided at the bottom end of the sealing column 1 (8) and the bottom end of the sealing column 2 (12), a gear (14) is meshedly connected between the two rack plates (13), a discharge tube (7) is provided in the middle of the sleeve 1 (5), a sealing assembly (9) is provided inside the fixed tube (3), a round plate (10) is provided at the bottom of the sleeve 1 (5) through a support block, and an adjustment assembly (11) is provided inside the round plate (10).

2. The anti-sand butterfly valve according to claim 1 is characterized in that: The top and bottom of the filter screen (2) are both provided with a clamping block (904); a clamping groove matching the clamping block (904) is provided inside the valve body (1), and the clamping block (904) is engaged and connected with the clamping groove; and a pull cap for disassembling the filter screen (2) is provided on the surface of the filter screen (2).

3. The anti-sand butterfly valve according to claim 2 is characterized in that: Two second clamping blocks (905) are symmetrically arranged at one end of the fixed tube (3) facing the filter screen (2), and the second clamping block (905) is in contact with the first clamping block (904).

4. The anti-sand butterfly valve according to claim 1 is characterized in that: A plurality of bolt and nut groups are arranged between the valve body (1) and the fixing pipe (3), and a sealing gasket is arranged between the valve body (1) and the fixing pipe (3).

5. The anti-sand butterfly valve according to claim 1 is characterized in that: The sealing assembly (9) comprises a circular plate (901) which is fixedly mounted inside a fixed tube (3); a sealing groove (902) matching with a second sealing column (12) is provided on a side of the circular plate (901) facing the filter screen (2); and a through hole (903) is provided in the middle of the circular plate (901).

6. The anti-sand butterfly valve according to claim 1 is characterized in that: The adjusting assembly (11) comprises a rotating rod (1101), the rotating rod (1101) being rotatably arranged inside the circular plate (10), and one end of the rotating rod (1101) being fixedly connected to one side of the gear (14), one end of the rotating rod (1101) passing through the circular plate (10) and being fixedly connected to a worm gear (1102) arranged outside the circular plate (10), two supporting plates (1103) being symmetrically arranged on the surface of the circular plate (10), a worm gear (1104) being rotatably arranged between the two supporting plates (1103), and the worm gear (1102) being meshingly connected to the worm gear (1104).

7. The anti-sand butterfly valve according to claim 6, characterized in that: An adjusting handle (1105) is provided at one end of the worm (1104), and an anti-slip groove is provided on the surface of the adjusting handle (1105).

8. The anti-sand butterfly valve according to claim 1, characterized in that: A mounting ring (906) is provided at one end of the fixed tube (3) away from the valve body (1), and a plurality of mounting holes are evenly provided on the surface of the mounting ring (906).

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