Wear-resistant and corrosion-resistant butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a wear-resistant corrosion-resistant butterfly valve which comprises a valve body, a rubber ring is connected to the inner wall of the valve body in a sliding mode, two through holes are formed in the surface of the rubber ring, a valve clack is arranged on the inner wall of the rubber ring, a driving hole and an anti-disengaging hole are formed in the surface of the valve clack respectively, and a box body is arranged on the surface of the valve body. The inner wall of the box body is slidably connected with a sliding plate, the top end of the sliding plate is provided with an anti-disengaging rod clamped with the anti-disengaging hole, and the bottom end of the box body is rotatably connected with a rotating cylinder through a sealing bearing. The rotating drum is rotated to drive the screw rod and the sliding plate to move downwards, the sliding plate drives the anti-disengaging rod to move downwards, the anti-disengaging rod is made to disengage from the anti-disengaging hole, limiting of the anti-disengaging rod to the bottom of the valve clack is relieved, then the transmission rod is pulled out upwards, the transmission rod is made to be separated from the driving hole, the valve clack is taken down, and the valve clack is convenient to disassemble and replace. And the service life of the butterfly valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a wear-resistant and corrosion-resistant butterfly valve. Background Art

[0002] The butterfly valve, also known as the flap valve, is a simple regulating valve that can be used to control the on / off of low-pressure pipeline media. The disc of the butterfly valve is a disc, and the pipeline is switched on and off by rotating the disc around the valve shaft.

[0003] Among them, the "a butterfly valve for preventing the displacement of the sealing rubber ring" disclosed in the application number "CN202221996769.X" "includes a butterfly valve body, a connecting rod, a valve seat and a handwheel, and also includes a valve plate. A channel for installing the valve plate is provided in the butterfly valve body, a connecting rod is fixedly welded to the top of the butterfly valve body, a valve seat is fixedly welded to the top of the connecting rod, a handwheel is mounted on the valve seat, a first mounting flange is fixedly sleeved on the outer side of one end of the butterfly valve body, and a second mounting flange is fixedly sleeved on the outer side of the end of the butterfly valve body away from the first mounting flange. Through the design of the mounting groove, the position of the sealing rubber ring body can be limited, and at the same time, through the design of the adhesive layer, the stability of the sealing rubber ring body on the butterfly valve body can be further improved. Through the design of the card slot, it is easy to remove the sealing rubber ring body from the butterfly valve body. Through the design of the sealing groove, it is easy to install the sealing gasket. Through the design of the sealing gasket and the sealing component, the sealing performance of the butterfly valve body after installation can be improved. "

[0004] However, the above method still has the following defects: the valve disc does not have the function of being disassembled and replaced, and the anti-corrosion layer of the valve disc wears out after long-term use, causing the valve disc to rust and shortening the service life of the butterfly valve. Utility Model Content

[0005] The utility model aims to provide a wear-resistant and corrosion-resistant butterfly valve, which has the effect of conveniently disassembling the valve disc.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a wear-resistant and corrosion-resistant butterfly valve, comprising a valve body, the inner wall of the valve body is slidably connected to a rubber ring, the surface of the rubber ring is provided with two through holes, the inner wall of the rubber ring is provided with a valve disc, the surface of the valve disc is respectively provided with a driving hole and an anti-drop hole, the surface of the valve body is provided with a box body, the inner wall of the box body is slidably connected to a slide plate, the top of the slide plate is provided with an anti-drop rod engaged with the anti-drop hole, the bottom end of the box body is rotatably connected to a rotating drum through a sealed bearing, the inner wall of the rotating drum is threadedly connected to a screw, one end of the screw is connected to the bottom end of the slide plate, and the top of the box body is provided with a transmission assembly.

[0007] The utility model is further configured as follows: a sleeve is embedded in the surface of the valve body, a first combined sealing ring is arranged between the sleeve and the anti-dropout rod, the contact portion of the box body and the sleeve is connected, the contact portions of the box body and the valve body and the anti-dropout rod are all slidably connected, the surface of the anti-dropout rod is slidably connected to the inner wall of one of the through holes, and two grooves are provided on the inner wall of the driving hole.

[0008] The utility model is further configured as follows: protective covers are provided on the front and back of the valve flap, the two protective covers are made of tungsten steel alloy material, the two protective covers are configured in a truncated cone shape, and the rubber ring is made of chloroprene rubber material.

[0009] The utility model is further configured as follows: the transmission assembly includes a sleeve and an adjustment assembly, the sleeve is arranged on the surface of the valve body, a sliding hole is opened on the surface of the sleeve, a transmission rod is slidably connected to the inner wall of the sliding hole, a hand wheel is provided at one end of the transmission rod, a guide groove is opened on the surface of the transmission rod, and two clamping blocks engaged with the clamping groove are slidably connected to the inner wall of the guide groove.

[0010] The utility model is further configured as follows: a return spring is provided between the two blocks, a first slide tube is provided on one side of one of the blocks, and a second slide tube is provided on one side of the other block, the inner wall of the second slide tube is slidably connected to the surface of the first slide tube, and the return spring is sleeved on the outside of the second slide tube.

[0011] The utility model is further configured as follows: a second combined sealing ring is provided between the sleeve and the transmission rod, the surface of the transmission rod is slidably connected to the inner wall of another through hole, the transmission rod is slidably connected to the contact portion of the valve body, and sliding grooves are provided on the inner wall on the back side and the inner wall on the front side of the guide groove.

[0012] The utility model is further configured as follows: the adjustment component includes an adjustment rod and a limit assembly, the adjustment rod is rotatably arranged inside the transmission rod through a bearing, one end of the adjustment rod passes through the bottom end of the hand wheel and is provided with a knob, the other end of the adjustment rod is provided with a gear, the front and back sides of the gear are meshed and connected with racks, one side of one of the racks is connected to one side of one of the blocks, one side of the other rack is connected to one side of the other block, and the front side of one of the racks and the back side of the other rack are provided with a dovetail bar that slides with the slide groove.

[0013] The utility model is further configured as follows: the limit assembly includes a circular hole, a groove and two iron sheets, the circular hole and the groove are both opened at the top of the handwheel, the inner wall of the circular hole is slidably connected to a transmission seat connected to the surface of the adjusting rod, the surface of the transmission seat is opened with a limit groove, the inner wall of the groove is slidably connected to an auxiliary pulling frame, one side of the auxiliary pulling frame is provided with a magnetic adsorption plate, one side of the magnetic adsorption plate passes through the inner wall of one side of the groove and is provided with a limit plate engaged with the limit groove, and the two iron sheets are embedded in the top of the handwheel.

[0014] To sum up, the utility model has the following beneficial effects: the utility model drives the screw and the slide plate to move downward by rotating the rotating drum, and the slide plate drives the anti-drop rod to move downward, so that the anti-drop rod is disengaged from the anti-drop hole, and the limit of the anti-drop rod on the bottom of the valve disc is released. Then the transmission rod is pulled out upward, so that the transmission rod is separated from the driving hole, and the valve disc is removed, which is convenient for disassembly and replacement of the valve disc, and is beneficial to extending the service life of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at B;

[0019] Figure 5 For this utility model Figure 3 A schematic diagram of the enlarged structure at C;

[0020] Figure 6 It is a schematic diagram of the explosion structure of the valve disc of the utility model;

[0021] Figure 7 It is a schematic diagram of the top cross-sectional structure of the transmission rod of the utility model.

[0022] In the figure: 1. valve body; 2. rubber ring; 3. through hole; 4. valve disc; 5. drive hole; 6. transmission assembly; 61. sleeve; 62. sliding hole; 63. transmission rod; 64. hand wheel; 65. guide groove; 66. block; 67. reset spring; 68. first slide tube; 69. second slide tube; 7. adjustment assembly; 71. adjustment rod; 72. knob; 73. gear; 74. rack; 75. dovetail strip; 8. limit assembly; 81. round hole; 82. groove; 83. transmission seat; 84. limit groove; 85. auxiliary pull frame; 86. magnetic adsorption plate; 87. limit plate; 88. iron sheet; 9. anti-drop hole; 10. box; 11. slide plate; 12. anti-drop rod; 13. rotating drum; 14. screw; 15. sleeve; 16. slot; 17. protective cover. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] See also Figures 1 to 7 In the embodiment of the utility model, a wear-resistant and corrosion-resistant butterfly valve includes a valve body 1, the inner wall of the valve body 1 is slidably connected with a rubber ring 2, the surface of the rubber ring 2 is provided with two through holes 3, the inner wall of the rubber ring 2 is fixedly provided with a valve disc 4, the surface of the valve disc 4 is respectively provided with a driving hole 5 and an anti-drop hole 9, a box body 10 is fixedly provided on the surface of the valve body 1, the inner wall of the box body 10 is slidably connected with a slide plate 11, the top of the slide plate 11 is fixedly provided with an anti-drop rod 12 engaged with the anti-drop hole 9, the anti-drop rod 12 is engaged with the anti-drop hole 9, and the valve disc 4 is fixedly provided with a rubber ring 2. The rubber ring 2 has two through holes 3, and the inner wall of the rubber ring 2 is fixedly provided with a valve disc 4. The driving hole 5 and the anti-drop hole 9 are respectively provided on the surface of the valve disc 4. The anti-drop rod 12 rotates around the center of a circle to complete the installation of the valve disc 4. The bottom end of the box body 10 is rotatably connected to the rotating drum 13 through a sealed bearing. The inner wall of the rotating drum 13 is threadedly connected to the screw 14. Furthermore, the surface of the rotating drum 13 is provided with anti-slip grooves to prevent slipping. One end of the screw 14 is fixedly connected to the bottom end of the slide plate 11. A transmission assembly 6 is provided at the top of the box body 10. The screw 14 and the slide plate 11 are pushed to move by the rotating drum 13. The transmission assembly 6 can drive the valve disc 4 to rotate, thereby achieving the blocking or circulation of the fluid medium.

[0025] In the present embodiment, preferably, a sleeve 15 is embedded in the surface of the valve body 1, and a first combined sealing ring is arranged between the sleeve 15 and the anti-drop rod 12, and the first combined sealing ring can maintain the sealing of the valve body 1 when the anti-drop rod 12 and the sleeve 15 rotate relative to each other or slide relative to each other in the vertical direction, the contact part of the box body 10 and the sleeve 15 is fixedly connected, and the contact parts of the box body 10 and the valve body 1 and the anti-drop rod 12 are both slidably connected, the surface of the anti-drop rod 12 is slidably connected to the inner wall of one of the through holes 3, and the inner wall of the driving hole 5 is provided with two slots 16.

[0026] In this embodiment, preferably, protective covers 17 are fixedly provided on the front and back of the valve flap 4. The two protective covers 17 are made of tungsten steel alloy material, which is wear-resistant and corrosion-resistant and suitable for highly corrosive media. The two protective covers 17 are both set to be truncated cone-shaped, and the rubber ring 2 is made of chloroprene rubber material, which is acid-resistant and alkali-resistant, thereby extending the service life of the valve flap 4.

[0027] In this embodiment, preferably, the transmission assembly 6 includes a sleeve 61 and an adjustment assembly 7. The sleeve 61 is fixedly arranged on the surface of the valve body 1. A sliding hole 62 is provided on the surface of the sleeve 61. A transmission rod 63 is slidably connected to the inner wall of the sliding hole 62. A handwheel 64 is fixedly provided at one end of the transmission rod 63. When the handwheel 64 is turned, the handwheel 64 drives the transmission rod 63 to rotate. A guide groove 65 is provided on the surface of the transmission rod 63. Two blocks 66 engaged with the slot 16 are slidably connected to the inner wall of the guide groove 65. The two blocks 66 will be stuck in the slot 16 to prevent the transmission rod 63 from being pulled out from the inside of the driving hole 5.

[0028] In this embodiment, preferably, a return spring 67 is fixedly provided between the two blocks 66, a first slide tube 68 is fixedly provided on one side of one block 66, and a second slide tube 69 is fixedly provided on one side of the other block 66, the inner wall of the second slide tube 69 is slidably connected to the surface of the first slide tube 68, and the return spring 67 is sleeved on the outside of the second slide tube 69, the return spring 67 will stretch and push the two blocks 66 to move, the moving directions of the two blocks 66 are opposite and they are stuck into the inside of the two slots 16, when the two blocks 66 are pressed into the inside of the guide groove 65, the second slide tube 69 slides along the surface of the first slide tube 68, the second slide tube 69 and the first slide tube 68 limit the compressed return spring 67 to prevent it from being damaged due to excessive twisting.

[0029] In this embodiment, preferably, a second combined sealing ring is provided between the sleeve 61 and the transmission rod 63, and the second combined sealing ring can maintain the sealing of the valve body 1 when the transmission rod 63 and the sleeve 61 rotate relative to each other or slide relative to each other in the vertical direction, and the surface of the transmission rod 63 is slidably connected to the inner wall of another through hole 3, and the contact part of the transmission rod 63 and the valve body 1 is slidably connected, and the inner wall on the back side and the inner wall on the front side of the guide groove 65 are provided with sliding grooves.

[0030] In this embodiment, preferably, the adjustment component 7 includes an adjustment rod 71 and a limit assembly 8. The adjustment rod 71 is rotatably arranged inside the transmission rod 63 through a bearing. One end of the adjustment rod 71 passes through the bottom end of the hand wheel 64 and is fixedly provided with a knob 72. The other end of the adjustment rod 71 is fixedly provided with a gear 73. The front and back sides of the gear 73 are meshed and connected with racks 74. One side of one rack 74 is fixedly connected to one side of one of the blocks 66, and one side of the other rack 74 is fixedly connected to one side of the other block 66. The front side of one rack 74 and the back side of the other rack 74 are fixedly provided with a gear corresponding to the slide groove. The sliding dovetail bar 75 turns the knob 72, and the knob 72 drives the gear 73 to rotate through the adjusting rod 71. The gear 73 drives the two racks 74 to move. The moving directions of the two racks 74 are opposite. The two racks 74 drive the two blocks 66 to move, causing the two blocks 66 to compress the reset spring 67 and retract into the inside of the guide groove 65, thereby releasing the fixation of the transmission rod 63 and the valve disc 4, making it convenient to pull out the transmission rod 63. The slide groove guides and limits the rack 74 through the dovetail bar 75, thereby improving the stability of the rack 74 when moving, and limiting the moving distance of the rack 74 to avoid collision between the block 66 and the gear 73.

[0031] In this embodiment, preferably, the limiting component 8 includes a circular hole 81, a groove 82 and two iron sheets 88. The circular hole 81 and the groove 82 are both provided at the top of the handwheel 64. The inner wall of the circular hole 81 is slidably connected with a transmission seat 83 fixedly connected to the surface of the adjusting rod 71. The surface of the transmission seat 83 is provided with a limiting groove 84. The inner wall of the groove 82 is slidably connected with an auxiliary pull frame 85. One side of the auxiliary pull frame 85 is fixedly provided with a magnetic adsorption plate 86. One side of the magnetic adsorption plate 86 passes through the inner wall of one side of the groove 82 and is fixedly provided with a limiting plate 87 engaged with the limiting groove 84. The two iron sheets 88 are both embedded in the top of the handwheel 64. After being inserted into the card slot 16, the auxiliary pulling frame 85 is pushed, and the auxiliary pulling frame 85 pushes the magnetic adsorption plate 86. The magnetic adsorption plate 86 will be adsorbed with the iron sheet 88, completing the fixation of the auxiliary pulling frame 85 and the limit plate 87. At this time, the limit plate 87 is inserted into the limit slot 84, completing the fixation of the transmission seat 83 and the adjusting rod 71. The adjusting rod 71 is pushed by the hand wheel 64 through the transmission seat 83 and the limit plate 87, so the adjusting rod 71 and the gear 73 remain relatively still with the hand wheel 64 when the hand wheel 64 rotates, preventing the gear 73 from colliding with the rack 74 that rotates with the block 66 and the transmission rod 63, thereby ensuring the meshing effect of the rack 74 when the transmission rod 63 rotates.

[0032] When in use, first rotate the drum 13, the drum 13 will drive the screw 14 and the slide plate 11 to move downward, the slide plate 11 drives the anti-drop rod 12 to move downward, so that the anti-drop rod 12 is separated from the anti-drop hole 9, and the anti-drop rod 12 is released from the limit of the bottom of the valve disc 4, then pull out the transmission rod 63 upward, so that the transmission rod 63 is separated from the driving hole 5, and the valve disc 4 is removed, which is convenient for disassembly and replacement of the valve disc 4, which is conducive to extending the service life of the butterfly valve;

[0033] When the transmission rod 63 needs to be pulled out, the knob 72 is turned, and the knob 72 drives the gear 73 to rotate through the adjusting rod 71, and the gear 73 drives the two racks 74 to move. The moving directions of the two racks 74 are opposite, and the two racks 74 drive the two blocks 66 to move, so that the two blocks 66 compress the reset spring 67 and retract into the guide groove 65, thereby releasing the fixing of the transmission rod 63 and the valve disc 4, and facilitating the pulling out of the transmission rod 63;

[0034] When it is necessary to rotate the valve disc 4, release the knob 72, the reset spring 67 will stretch and push the two blocks 66 to fit into the two slots 16, and then push the auxiliary pull frame 85, the auxiliary pull frame 85 pushes the magnetic adsorption plate 86, the magnetic adsorption plate 86 will be adsorbed with the iron sheet 88, completing the fixation of the auxiliary pull frame 85 and the limit plate 87, the limit plate 87 will fit into the limit groove 84, completing the fixation of the transmission seat 83 and the adjusting rod 71, at this time, turn the hand wheel 64, the hand wheel 64 drives the valve disc 4 to rotate through the transmission rod 63, the guide groove 65, the two blocks 66 and the two slots 16, thereby realizing the switching of the butterfly valve.

[0035] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A wear-resistant and corrosion-resistant butterfly valve, comprising a valve body (1), characterized in that: The inner wall of the valve body (1) is slidably connected to a rubber ring (2), the surface of the rubber ring (2) is provided with two through holes (3), the inner wall of the rubber ring (2) is provided with a valve flap (4), the surface of the valve flap (4) is respectively provided with a driving hole (5) and an anti-drop hole (9), the surface of the valve body (1) is provided with a box (10), the inner wall of the box (10) is slidably connected to a slide plate (11), the top of the slide plate (11) is provided with an anti-drop rod (12) engaged with the anti-drop hole (9), the bottom end of the box (10) is rotatably connected to a rotating cylinder (13) through a sealed bearing, the inner wall of the rotating cylinder (13) is threadedly connected to a screw rod (14), one end of the screw rod (14) is connected to the bottom end of the slide plate (11), and the top of the box (10) is provided with a transmission assembly (6).

2. The wear-resistant and corrosion-resistant butterfly valve according to claim 1, characterized in that: A sleeve (15) is embedded in the surface of the valve body (1), a first combined sealing ring is provided between the sleeve (15) and the anti-dropout rod (12), the contact portion of the box body (10) and the sleeve (15) is connected, the contact portions of the box body (10) and the valve body (1) and the anti-dropout rod (12) are all slidably connected, the surface of the anti-dropout rod (12) is slidably connected to the inner wall of one of the through holes (3), and the inner wall of the drive hole (5) is provided with two slots (16).

3. The wear-resistant and corrosion-resistant butterfly valve according to claim 1, characterized in that: The front and back sides of the valve flap (4) are both provided with protective covers (17), the two protective covers (17) are both made of tungsten steel alloy material, the two protective covers (17) are both arranged in a truncated cone shape, and the rubber ring (2) is made of chloroprene rubber material.

4. The wear-resistant and corrosion-resistant butterfly valve according to claim 2, characterized in that: The transmission assembly (6) comprises a sleeve (61) and an adjustment assembly (7). The sleeve (61) is arranged on the surface of the valve body (1). A sliding hole (62) is provided on the surface of the sleeve (61). A transmission rod (63) is slidably connected to the inner wall of the sliding hole (62). A hand wheel (64) is provided at one end of the transmission rod (63). A guide groove (65) is provided on the surface of the transmission rod (63). Two clamping blocks (66) that engage with the clamping groove (16) are slidably connected to the inner wall of the guide groove (65).

5. The wear-resistant and corrosion-resistant butterfly valve according to claim 4, characterized in that: A return spring (67) is provided between the two clamping blocks (66), a first slide tube (68) is provided on one side of one of the clamping blocks (66), and a second slide tube (69) is provided on one side of the other clamping block (66), the inner wall of the second slide tube (69) is slidably connected to the surface of the first slide tube (68), and the return spring (67) is sleeved on the outside of the second slide tube (69).

6. The wear-resistant and corrosion-resistant butterfly valve according to claim 4, characterized in that: A second combined sealing ring is provided between the sleeve (61) and the transmission rod (63); the surface of the transmission rod (63) is slidably connected to the inner wall of another through hole (3); the transmission rod (63) is slidably connected to the contact portion of the valve body (1); and the inner wall on the back side and the inner wall on the front side of the guide groove (65) are both provided with sliding grooves.

7. The wear-resistant and corrosion-resistant butterfly valve according to claim 6, characterized in that: The adjusting assembly (7) comprises an adjusting rod (71) and a limiting assembly (8). The adjusting rod (71) is rotatably arranged inside a transmission rod (63) through a bearing. One end of the adjusting rod (71) passes through the bottom end of a hand wheel (64) and is provided with a knob (72). The other end of the adjusting rod (71) is provided with a gear (73). The front and back sides of the gear (73) are meshedly connected with racks (74). One side of one of the racks (74) is connected to one side of one of the blocks (66), and one side of the other of the racks (74) is connected to one side of the other of the blocks (66). The front side of one of the racks (74) and the back side of the other of the racks (74) are both provided with dovetail bars (75) that slide with the slide groove.

8. The wear-resistant and corrosion-resistant butterfly valve according to claim 7, characterized in that: The limiting assembly (8) comprises a circular hole (81), a groove (82) and two iron sheets (88); the circular hole (81) and the groove (82) are both provided at the top of the hand wheel (64); the inner wall of the circular hole (81) is slidably connected to a transmission seat (83) connected to the surface of the adjusting rod (71); a limiting groove (84) is provided on the surface of the transmission seat (83); the inner wall of the groove (82) is slidably connected to an auxiliary pull frame (85); a magnetic adsorption plate (86) is provided on one side of the auxiliary pull frame (85); one side of the magnetic adsorption plate (86) passes through the inner wall of one side of the groove (82) and is provided with a limiting plate (87) engaged with the limiting groove (84); and the two iron sheets (88) are both embedded in the top of the hand wheel (64).

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