A bidirectional rotary sealing butterfly valve

Abstract

The utility model discloses a two-way rotary sealing butterfly valve, which belongs to the technical field of butterfly valves and comprises a butterfly valve body, wherein a mounting block is connected to the top of the butterfly valve body; the utility model is provided with a protection component, wherein a pull rod is moved to drive a plug-in rod to move upward, the plug-in rod moves upward to squeeze a first spring, and then the protection cover is moved toward the end plate direction, and a connecting column is plugged into the inside of a plug-in cavity, and then the pull rod is released, the first spring is restored to its original appearance and drives the plug-in rod to be plugged into the inside of the connecting column, and under the action of the end plate and the protection cover, the components of a cleaning and de-cluttering mechanism can be protected, and dust and other impurities in the external environment are prevented from adhering to the components of the cleaning and de-cluttering mechanism, causing the components of the cleaning and de-cluttering mechanism to be blocked, thereby ensuring the normal service life of the components of the cleaning and de-cluttering mechanism, and at the same time, during the operation of the cleaning and de-cluttering mechanism, air circulation inside the protection cover can be ensured under the action of the vent.

Description

Technical Field

[0001] The utility model belongs to the technical field of butterfly valves, and in particular relates to a bidirectional rotary sealing butterfly valve. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for switching control of low-pressure pipeline media. A butterfly valve refers to a valve in which the closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing.

[0003] Chinese patent application No. 202321729649.8 discloses a bidirectional sealing butterfly valve, including a butterfly valve body, a sealing plate is arranged in the butterfly valve body, the bottom of the sealing plate is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the butterfly valve body, the top of the sealing plate is fixedly connected with a rotating rod, the rotating rod passes through the butterfly valve body and is rotatably connected thereto, the top of the butterfly valve body is fixedly connected with a fixed block, the rotating rod passes through the fixed block and is rotatably connected thereto, the top of the rotating rod is fixedly connected with a worm wheel, the worm wheel is meshed with a worm, the worm passes through the fixed block and is rotatably connected thereto, the end of the worm away from the fixed block is fixedly connected with a handwheel, and two sealing rings are fixedly connected to the sealing plate. The utility model can ensure the stability of the sealing plate during blocking through the self-locking property of the worm wheel and worm, and the double-layer sealing ring is provided to ensure the sealing property.

[0004] In the above patent, a motor is connected above the butterfly valve body. The motor is directly exposed to the outside, and debris in the external environment falls onto the motor, causing the air inlet on the motor to be blocked by dust, affecting the normal service life of the motor; in addition, during use, the handwheel rotates due to external force, which easily drives the sealing plate to rotate, affecting the switch closing state of the butterfly valve body, and further affecting the normal working effect of the butterfly valve body. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a bidirectional rotary sealing butterfly valve, which has the characteristics of protection and tight fixation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bidirectional rotary sealing butterfly valve, comprising a butterfly valve body, a mounting block connected to the top of the butterfly valve body, a cleaning and de-impurity mechanism arranged between the mounting block and the butterfly valve body, a protective component arranged above the mounting block and at the periphery of the cleaning and de-impurity mechanism, a fixed block connected to the top of the butterfly valve body and at one side of the protective component, a rotating opening and closing mechanism arranged between the fixed block and the butterfly valve body, a hand wheel connected to one side of the fixed block and at one end of the rotating opening and closing mechanism, and a tightening component arranged between the fixed block and the hand wheel.

[0007] Preferably, the protective assembly includes an end plate, a protective cover, a connecting column, a plug-in cavity and a connector, one side of the mounting block is connected to the end plate, one side of the end plate is connected to the protective cover, the side of the end plate close to the protective cover is connected to the connecting column, a plug-in cavity is provided on the protective cover at a position corresponding to the connecting column, and a connector is provided on the protective cover and on one side of the connecting column.

[0008] Preferably, the connector includes a pull rod, a first spring and a connecting rod, a groove is provided on the protective cover and located on the upper side of the connecting column, a connecting rod is inserted into the inside of the groove, a first spring is connected between the connecting rod and the groove, a pull rod is connected to one end of the connecting rod and located inside the first spring, and a connecting groove is provided on the connecting column and at a position corresponding to the connecting rod.

[0009] Preferably, one end of the connecting column close to the plug-in cavity is connected to a limit sliding block, and a limit sliding groove is provided on the inner side wall of the plug-in cavity at a position corresponding to the limit sliding block.

[0010] Preferably, the protective component further includes a vent and a dustproof net. The vent is provided on one side of the protective cover, and the inside of the vent is connected to the dustproof net.

[0011] Preferably, the clamping assembly includes a movable groove, a clamping screw, a second spring, a movable block, an L-shaped plate and a clamping plate, an L-shaped plate is connected to the side wall of the fixed block and located below the hand wheel, a movable groove is provided on the inner side wall of the L-shaped plate, a movable block is provided inside the movable groove, a clamping plate is connected above the movable block, a second spring is connected between the movable block and the movable groove, and a clamping screw is connected to one end of the movable groove and located inside the second spring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a protective component, and the movement of the pull rod drives the plug-in rod to move upward, and the plug-in rod moves upward to squeeze the first spring, and then moves the protective cover toward the end plate, and the connecting column is plugged into the inside of the plug-in cavity, and then the pull rod is released, and the first spring is restored to its original appearance to drive the plug-in rod to be plugged into the inside of the connecting column. Under the action of the end plate and the protective cover, the components of the cleaning and de-cluttering mechanism can be protected to prevent dust and other impurities in the external environment from adhering to the components of the cleaning and de-cluttering mechanism, causing the components of the cleaning and de-cluttering mechanism to be blocked, thereby ensuring the normal service life of the components of the cleaning and de-cluttering mechanism. At the same time, during the operation of the cleaning and de-cluttering mechanism, the air circulation inside the protective cover can be ensured under the action of the vent.

[0014] 2. The utility model is provided with a clamping assembly. After the handwheel is used, the clamping screw is rotated to make it rotate and move along the L-shaped plate. The movement of the clamping screw drives the moving block to move inside the moving groove. The movement of the moving block drives the clamping plate to move and the second spring to stretch. When the clamping plate moves to fit the side wall of the handwheel, the rotation of the clamping screw is stopped. Under the action of the clamping plate, the handwheel can be clamped and fixed, thereby ensuring the operating state of the rotating opening and closing mechanism and the use effect of the butterfly valve body. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a partial cross-sectional view of the connection state between the installation block and the cleaning and impurity removal mechanism of the utility model;

[0018] Figure 4 For this utility model Figure 2 The enlarged view of point A in the middle;

[0019] Figure 5 For this utility model Figure 3 Enlarged view of point B in the middle.

[0020] In the figure: 1. butterfly valve body; 2. protection assembly; 21. end plate; 22. protection cover; 23. vent; 24. dust screen; 25. connecting column; 26. plug-in cavity; 27. plug-in component; 271. pull rod; 272. first spring; 273. plug-in rod; 3. fixing block; 4. hand wheel; 5. rotating opening and closing mechanism; 6. mounting block; 7. cleaning and removing mechanism; 8. tightening assembly; 81. moving groove; 82. tightening screw; 83. second spring; 84. moving block; 85. L-shaped plate; 86. tightening plate. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1

[0023] See also Figure 1-5The utility model provides the following technical solutions: a bidirectional rotary sealing butterfly valve, comprising a butterfly valve body 1, a mounting block 6 is connected above the butterfly valve body 1, a cleaning and impurity removal mechanism 7 is arranged between the mounting block 6 and the butterfly valve body 1, a protective component 2 is arranged above the mounting block 6 and at the periphery of the cleaning and impurity removal mechanism 7, a fixed block 3 is connected above the butterfly valve body 1 and at one side of the protective component 2, a rotating opening and closing mechanism 5 is arranged between the fixed block 3 and the butterfly valve body 1, a hand wheel 4 is connected to one side of the fixed block 3 and at one end of the rotating opening and closing mechanism 5, and a tightening component 8 is arranged between the fixed block 3 and the hand wheel 4.

[0024] Specifically, the protective assembly 2 includes an end plate 21, a protective cover 22, a connecting column 25, a plug-in cavity 26 and a plug-in connector 27. One side of the mounting block 6 is connected to the end plate 21, one side of the end plate 21 is connected to the protective cover 22, and the side of the end plate 21 close to the protective cover 22 is connected to the connecting column 25. The plug-in cavity 26 is provided on the protective cover 22 at a position corresponding to the connecting column 25, and the plug-in connector 27 is provided on the protective cover 22 and located on one side of the connecting column 25.

[0025] By adopting the above technical solution, the protective cover 22 is moved toward the end plate 21, and the connecting column 25 is inserted into the inside of the plug-in cavity 26. The connecting column 25 is then plugged and fixed by the plug-in component 27, so that the end plate 21 and the protective cover 22 can be limited and fixed. Under the action of the end plate 21 and the protective cover 22, the components of the cleaning and de-impurity mechanism 7 can be protected to prevent dust and other impurities in the external environment from adhering to the components of the cleaning and de-impurity mechanism 7, causing the components of the cleaning and de-impurity mechanism 7 to be blocked, thereby ensuring the normal service life of the components of the cleaning and de-impurity mechanism 7.

[0026] Specifically, the connector 27 includes a pull rod 271, a first spring 272 and a plug rod 273. A groove is provided on the protective cover 22 and located on one side above the connecting column 25. The plug rod 273 is plugged into the groove. The first spring 272 is connected between the plug rod 273 and the groove. The pull rod 271 is connected to one end of the plug rod 273 and located inside the first spring 272. A plug groove is provided on the connecting column 25 at a position corresponding to the plug rod 273.

[0027] By adopting the above technical solution, the pull rod 271 is moved upward, and the movement of the pull rod 271 drives the plug-in rod 273 to move upward, and the plug-in rod 273 moves upward to squeeze the first spring 272. When the connecting column 25 is plugged into the plug-in cavity 26, the pull rod 271 is released, and the first spring 272 returns to its original appearance and drives the plug-in rod 273 to be plugged into the connecting column 25. The plug-in rod 273 is used to plug and fix the connecting column 25.

[0028] Specifically, one end of the connecting column 25 close to the inserting cavity 26 is connected to a limit slider, and a limit slide groove is provided on the inner side wall of the inserting cavity 26 at a position corresponding to the limit slider.

[0029] By adopting the above technical solution, the movement of the connecting column 25 drives the limit slider to move inside the limit slide groove. When the limit slider moves to fit the side wall of the limit slide groove, the limit slider is blocked and stops moving, thereby preventing the connecting column 25 from continuing to move, preventing the protective cover 22 from detaching from the connecting column 25.

[0030] Specifically, the protection component 2 further includes a vent 23 and a dustproof net 24. The vent 23 is provided on one side of the protection cover 22, and the inside of the vent 23 is connected to the dustproof net 24.

[0031] By adopting the above technical solution, during the operation of the cleaning and impurity removal mechanism 7, the ventilation holes 23 can ensure the air circulation inside the protective cover 22, and the dustproof net 24 can prevent dust and other impurities in the external environment from entering the protective cover 22 through the ventilation holes 23.

[0032] When the present embodiment is used, the pull rod 271 is moved upward, and the movement of the pull rod 271 drives the plug-in rod 273 to move upward, and the plug-in rod 273 moves upward to squeeze the first spring 272, and then the protective cover 22 is moved toward the end plate 21, and the connecting column 25 is plugged into the inside of the plug-in cavity 26, and then the pull rod 271 is released, and the first spring 272 is restored to its original appearance and drives the plug-in rod 273 to be plugged into the inside of the connecting column 25. Under the action of the end plate 21 and the protective cover 22, the parts of the cleaning and de-impurity mechanism 7 can be protected to prevent dust and other impurities in the external environment from adhering to the parts of the cleaning and de-impurity mechanism 7, causing the parts of the cleaning and de-impurity mechanism 7 to be damaged. To ensure the normal service life of the parts of the cleaning and impurity removal mechanism 7, when the butterfly valve body 1 needs to be used for medium conveying operation, the hand wheel 4 is used to drive the fixed block 3 and the rotating opening and closing mechanism 5 inside the butterfly valve body 1 to open the medium, and the subsequent medium is cleaned and impurities are removed by the cleaning and impurity removal mechanism 7, and then conveyed by the rotating opening and closing mechanism 5. During the operation of the cleaning and impurity removal mechanism 7, the air circulation inside the protective cover 22 can be ensured under the action of the vent 23, and the dust and other impurities in the external environment can be prevented from entering the protective cover 22 through the vent 23 under the action of the dustproof net 24;

[0033] Example 2

[0034] The present embodiment is different from the first embodiment in that: the clamping assembly 8 comprises a moving groove 81, a clamping screw 82, a second spring 83, a moving block 84, an L-shaped plate 85 and a clamping plate 86; an L-shaped plate 85 is connected to the side wall of the fixed block 3 and located below the hand wheel 4; a moving groove 81 is arranged on the inner side wall of the L-shaped plate 85; a moving block 84 is arranged inside the moving groove 81; a clamping plate 86 is connected above the moving block 84; a second spring 83 is connected between the moving block 84 and the moving groove 81; a clamping screw 82 is connected to one end of the moving groove 81 and located inside the second spring 83;

[0035] When this embodiment is used, after the handwheel 4 is used, the locking screw 82 is rotated to make it rotate and move along the L-shaped plate 85. The movement of the locking screw 82 drives the moving block 84 to move inside the moving groove 81. The movement of the moving block 84 drives the locking plate 86 to move and the second spring 83 to stretch. When the locking plate 86 moves to fit the side wall of the handwheel 4, the locking screw 82 is stopped. Under the action of the locking plate 86, the handwheel 4 can be locked and fixed, thereby ensuring the operating state of the rotating opening and closing mechanism 5 and ensuring the use effect of the butterfly valve body 1.

[0036] The structure and principle of the rotating opening and closing mechanism 5 composed of a sealing plate, a rotating shaft, a rotating rod, a worm gear, a worm, and a sealing ring in the utility model have been disclosed in a bidirectional sealing butterfly valve disclosed in Chinese patent application No. 202321729649.8. Its working principle is: a sealing plate is provided in the butterfly valve body 1, and two sealing rings are fixedly connected to the sealing plate. The bottom of the sealing plate is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to the butterfly valve body 1. The rotating shaft passes through the butterfly valve body, and a bearing is installed between the rotating shaft and the butterfly valve body 1. The top of the sealing plate is fixedly connected to a rotating rod, and the rotating rod passes through the butterfly valve body 1 and is connected to it. It is rotatably connected, and the rotating rod passes through the fixed block 3 and is rotatably connected thereto. A worm wheel is fixedly connected to the top of the rotating rod, and a worm is meshed with the worm wheel. The worm passes through the fixed block 3 and is rotatably connected thereto. The end of the worm away from the fixed block 3 is connected to the hand wheel 4. When in use, the staff holds the hand wheel 4 to rotate, driving the worm, worm wheel, rotating rod, sealing plate and rotating shaft to rotate. The conveying flow rate of the medium can be controlled by rotating the sealing plate to meet different usage needs. When sealing, the two sealing rings set can play a double-layer sealing role to seal the bidirectional media at the input and output ends to ensure the sealing performance.

[0037] The structure and principle of the cleaning and impurity removal mechanism 7 composed of a filter screen, a motor, a reciprocating screw rod, a slide plate and a sliding rod in the utility model have been disclosed in a bidirectional sealing butterfly valve disclosed in Chinese patent application No. 202321729649.8. Its working principle is: the inner wall of the butterfly valve body 1 is fixedly connected with a filter screen, the top of the butterfly valve body 1 and the motor is fixedly connected above the mounting block 6, the output end of the motor is fixedly connected with a reciprocating screw rod, the reciprocating screw rod penetrates the butterfly valve body 1 and is rotatably connected thereto, the outer wall of the reciprocating screw rod is sleeved with a slide plate, the inner wall of the butterfly valve body 1 is fixedly connected with a sliding rod, the sliding rod penetrates the slide plate and is slidably connected thereto, and a plurality of brushes are provided at one end of the slide plate close to the filter screen. When the medium is transported, the solid particle impurities in the medium can be filtered through the set filter screen to avoid clogging the subsequent pipeline. At the same time, the motor is started, and the reciprocating screw rod is driven to rotate through the output end of the motor, so that the slide plate is lifted and moved on the sliding rod. The brush on the slide plate is driven to move up and down by the slide plate, so that the filter screen can be cleaned to avoid clogging of the filter screen and ensure the normal flow of the medium.

[0038] The working principle and use process of the utility model are as follows: the utility model moves the pull rod 271 upward, and the movement of the pull rod 271 drives the plug-in rod 273 to move upward, and the plug-in rod 273 moves upward to squeeze the first spring 272, and then moves the protective cover 22 toward the end plate 21, and the connecting column 25 is plugged into the inside of the plug-in cavity 26, and then the pull rod 271 is released, and the first spring 272 recovers its original appearance and drives the plug-in rod 273 to be plugged into the inside of the connecting column 25. Under the action of the end plate 21 and the protective cover 22, the components of the cleaning and de-cluttering mechanism 7 can be protected to prevent dust and other impurities in the external environment from adhering to the components of the cleaning and de-cluttering mechanism 7, causing the components of the cleaning and de-cluttering mechanism 7 to be blocked, thereby ensuring the normal service life of the components of the cleaning and de-cluttering mechanism 7. When the butterfly valve body 1 needs to be used for medium conveying operation, the hand wheel 4 is used to drive the fixed block 3 and the rotating opening and closing mechanism 5 inside the butterfly valve body 1 to perform the opening operation. After the hand wheel 4 is used, the locking screw 82 is rotated to rotate and move along the L-shaped plate 85. The locking screw 82 moves to drive the moving block 84 to move inside the moving groove 81. The moving block 84 moves to drive the locking plate 86 to move and the second spring 83 to stretch. When the locking plate 86 moves to fit the side wall of the hand wheel 4, the locking screw 82 is stopped. Under the action of the locking plate 86, the hand wheel 4 can be locked and fixed, thereby ensuring the operating state of the rotating opening and closing mechanism 5 and the use effect of the butterfly valve body 1. After the subsequent medium is cleaned and removed by the cleaning and de-impurity mechanism 7, it is transported through the rotating opening and closing mechanism 5. During the operation of the cleaning and de-impurity mechanism 7, under the action of the vent 23, the air circulation inside the protective cover 22 can be guaranteed, and under the action of the dustproof net 24, dust and other impurities in the external environment can be prevented from entering the protective cover 22 through the vent 23.

[0039] 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 bidirectional rotary sealing butterfly valve, comprising a butterfly valve body, characterized in that: A mounting block is connected above the butterfly valve body, a cleaning and de-impurity mechanism is arranged between the mounting block and the butterfly valve body, a protective component is arranged above the mounting block and at the periphery of the cleaning and de-impurity mechanism, a fixed block is connected above the butterfly valve body and at one side of the protective component, a rotating opening and closing mechanism is arranged between the fixed block and the butterfly valve body, a hand wheel is connected to one side of the fixed block and at one end of the rotating opening and closing mechanism, and a tightening component is arranged between the fixed block and the hand wheel.

2. A bidirectional rotary sealing butterfly valve according to claim 1, characterized in that: The protective assembly includes an end plate, a protective cover, a connecting column, a plug-in cavity and a connector. One side of the mounting block is connected to the end plate, one side of the end plate is connected to the protective cover, the side of the end plate close to the protective cover is connected to the connecting column, a plug-in cavity is provided on the protective cover at a position corresponding to the connecting column, and a connector is provided on the protective cover and on one side of the connecting column.

3. A bidirectional rotary sealing butterfly valve according to claim 2, characterized in that: The connector includes a pull rod, a first spring and a plug-in rod. A groove is provided on the protective cover and located on one side above the connecting column. The plug-in rod is plugged into the inside of the groove. The first spring is connected between the plug-in rod and the groove. A pull rod is connected to one end of the plug-in rod and located inside the first spring. A plug-in groove is provided on the connecting column at a position corresponding to the plug-in rod.

4. A bidirectional rotary sealing butterfly valve according to claim 2, characterized in that: One end of the connecting column close to the plug-in cavity is connected to a limit sliding block, and a limit sliding groove is arranged on the inner side wall of the plug-in cavity at a position corresponding to the limit sliding block.

5. A bidirectional rotary sealing butterfly valve according to claim 2, characterized in that: The protection component also includes a vent and a dustproof net. The vent is arranged on one side of the protection cover, and the inside of the vent is connected with the dustproof net.

6. A bidirectional rotary sealing butterfly valve according to claim 1, characterized in that: The clamping assembly includes a movable groove, a clamping screw, a second spring, a movable block, an L-shaped plate and a clamping plate. An L-shaped plate is connected to the side wall of the fixed block and located below the hand wheel, a movable groove is provided on the inner side wall of the L-shaped plate, a movable block is provided inside the movable groove, a clamping plate is connected above the movable block, a second spring is connected between the movable block and the movable groove, and a clamping screw is connected to one end of the movable groove and located inside the second spring.

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