Small-torque hard sealing butterfly valve

Abstract

The utility model discloses a small torque hard seal butterfly valve which comprises a valve body, the top of the outer wall of the circumference of the valve body is fixedly connected with a shell, the outer wall of one side of the shell is rotationally connected with a wheel disc through a bearing, an extension assembly is installed outside the wheel disc, and the extension assembly comprises two limiting grooves formed in the outer wall of one side of the wheel disc. The two limiting grooves are horizontally formed, an extension column is slidably inserted into each limiting groove, horizontally-arranged racks are fixedly connected to the outer walls of the ends, close to each other, of the two extension columns, the two racks are oppositely arranged, and two first gears are rotationally connected to the outer wall of one side of the wheel disc through bearings; according to the utility model, the extension assembly is arranged, so that the arm of force of the wheel disc can be increased as required, the opening and closing process is more labor-saving, and the extension assembly can be collected after being used, and does not occupy too large space.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely is a small torque hard sealing butterfly valve. BACKGROUND

[0002] The butterfly plate is a disc-shaped component mounted in the valve body through a valve shaft and can rotate around its axis. This rotary motion enables the valve to switch between 0° and 90°, where 90° represents the fully open state of the valve and 0° represents the fully closed state of the valve.

[0003] After searching, the utility model with patent announcement number CN214146636U discloses a hard sealing butterfly valve with small torque, belonging to the technical field of butterfly valves, which comprises a valve body. One side of the valve body is provided with a No. 1 flange plate, and the other side of the valve body is provided with a No. 2 flange plate. The upper end of the valve body is provided with a bracket, and a fixing nut is arranged between the bracket and the valve body.

[0004] The current small torque butterfly valve sets a worm gear, which makes the opening and closing of the butterfly valve more labor-saving. However, in order to ensure that the butterfly valve does not occupy too much space, the diameter of the wheel disc connected with the worm cannot be too large, and a large amount of force is still needed during operation, which needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a small torque hard sealing butterfly valve to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a small torque hard sealing butterfly valve, comprising a valve body, the valve body is fixedly connected with a shell at the top of the circumferential outer wall, a wheel disc is rotatably connected with the outer wall of one side of the shell through a bearing, an extension assembly is installed outside the wheel disc, the extension assembly comprises two limiting grooves opened in the outer wall of one side of the wheel disc, the two limiting grooves are both horizontally arranged, and each limiting groove is slidably inserted with an extension column, the outer wall of one end of the two extension columns is fixedly connected with a horizontally arranged rack, and the two racks are oppositely arranged.

[0007] As a further optimization of the technical scheme, one side of the outer wall of the wheel disc is rotatably connected with two gear wheels one through a bearing, the two gear wheels one are respectively engaged with the two racks, and the outer wall of one side of the two gear wheels one is coaxially fixed with a belt wheel, and the two belt wheels are sleeved with the same belt.

[0008] The force arm of the wheel disc can be increased when needed, so that the opening and closing process is more labor-saving, and after use, it can also be bundled up and will not occupy too much space. By pushing a extension column with a handle, the extension column slides along the limiting groove to one side, the rack fixed at the top of the extension column also moves synchronously, which drives a gear and a belt pulley to rotate through meshing, the belt pulley can drive another belt pulley and gear to rotate in the same direction through the belt, and the other gear can drive the other extension column to move in the opposite direction through the rack meshing with it, so that the transmission force arm of the wheel disc is greatly increased, ensuring that the driving process is more relaxed.

[0009] As a further preferred embodiment of the present technical solution, two connecting assemblies are mounted outside the valve body, and the two connecting assemblies are respectively located at both ends of the valve body.

[0010] As a further preferred embodiment of the present technical solution, the connecting assembly comprises one or more mounting frames fixedly connected to the circumferential outer wall of the valve body flange, one or more screw rods are rotatably connected inside the mounting frame through bearings, the outer threads of the screw rods are sleeved with a clamping plate, and the mounting frame is fixedly connected with two limiting rods inside, and the clamping plate is sleeved outside the two limiting rods.

[0011] As a further preferred embodiment of the present technical solution, one or more bevel gears are coaxially fixed to one end of the top of the screw rod, an installation ring is coaxially fixed to the circumferential outer wall of the valve body, a bevel gear ring is rotatably connected to one end of the outer wall of the installation ring through a bearing, and one or more bevel gears are meshed with the bevel gear ring.

[0012] If the accessories inside the valve body are damaged and need to be repaired, rotate the bevel gear ring along the installation ring, which drives the bevel gear to rotate through meshing, and the screw rod connected thereto will be driven to rotate synchronously, and the clamping plate limited by the limiting rod can be driven away from the valve body by the screw rod, so that when the clamping plate no longer contacts the flange of the external pipeline, the valve body will no longer be limited, and thus it can be quickly removed, which is beneficial to improve the repair efficiency.

[0013] As a further preferred embodiment of the present technical solution, a horizontally arranged extension plate is fixedly connected to one side of the outer wall of the wheel disc, a clamping plate is slidably inserted into the extension plate, a spring is sleeved outside the clamping plate, the two ends of the spring are fixedly connected with the clamping plate and the extension plate, and a toothed clamping groove adapted to the clamping plate is formed in the outer wall of the top of the extension column.

[0014] As a further preferred embodiment of the present technical solution, two valve seats are arranged inside the valve body, the same valve rod is rotatably connected between the two valve seats, and a molybdenum disulfide lubricant is added between the valve rod and the valve seat packing.

[0015] As a further preferred embodiment of the present technical solution, one or more reinforcing ribs are fixedly connected outside the clamping plate.

[0016] The utility model provides a small torque hard seal butterfly valve has the following beneficial effects:

[0017] (1) the utility model discloses a prolonging assembly can increase the force arm of the wheel disc when needing, thereby make the opening and closing process more labor saving, and can also be gathered after using, will not occupy the space of being too big, push a prolonging column through the handle, and the rack fixed on the top of prolonging column also will move in synchronism, and it drives a gear wheel one and pulley to rotate through the meshing, and this pulley can drive another pulley and gear wheel to rotate together through the belt, and another gear wheel one can drive another prolonging column to move reversely through the rack meshing with it, thereby can make wheel disc transmission force arm increase greatly, guarantee the driving process is more relaxed.

[0018] (2) the utility model discloses a connecting assembly, if the accessory inside the valve body needs to be repaired when being damaged, rotates along the mounting ring by driving the bevel gear ring, and the connecting screw will be driven to rotate synchronously by the meshing driving the bevel gear to rotate, and the clamping plate limited by the limiting rod can be driven away from the valve body by the screw, when the clamping plate no longer contacts the flange of the external pipeline, the valve body will no longer be limited, so it can be quickly removed, which is beneficial to improve the repair efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the prolonging assembly structure schematic view of the utility model;

[0021] Figure 3 It is the Figure 1 Amplification structure schematic view of the utility model in A place;

[0022] Figure 4 It is the Figure 2 Amplification structure schematic view of the utility model in B place;

[0023] In the drawing: 1, valve body;2, shell;3, wheel disc;4, prolonging assembly;5, connecting assembly;401, limiting groove;402, prolonging column;403, rack;404, gear wheel one;405, pulley;406, extension plate;407, clamping plate;408, spring;501, mounting frame;502, screw;503, limiting rod;504, clamping plate;505, bevel gear;506, mounting ring;507, bevel gear ring;508, reinforcing rib. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0025] The utility model provides technical scheme: as Figure 1 And Figure 2 As shown in the figure, in the embodiment, a small torque hard sealing butterfly valve, including valve body 1, the top of valve body 1 circumferential outer wall is fixedly connected with shell 2, shell 2 one side outer wall is rotatably connected with wheel disc 3 through bearing, wheel disc 3 outside is equipped with extension assembly 4, extension assembly 4 includes two limit slots 401 that wheel disc 3 one side outer wall is set, two limit slots 401 are all horizontally arranged, and one extension column 402 is slidably inserted in each limit slot 401, the outer wall of the end of two extension columns 402 close to each other is all fixedly connected with one horizontal rack 403, and two rack 403 are oppositely arranged.

[0026] The outer wall of one side of wheel disc 3 is rotatably connected with two gear wheels one 404, two gear wheels one 404 are respectively engaged with two rack 403, and the outer wall of one side of two gear wheels one 404 is coaxially fixed with one belt wheel 405, two belt wheels 405 are sleeved with the same belt, and the belt wheel 405 adopts the toothed belt wheel, so that the transmission is smooth enough, and will not slip due to resistance.

[0027] One extension column 402 is pushed by handle, and the extension column 402 slides along the limit slot 401 to one side, and the rack 403 fixed at the top of the extension column 402 also moves synchronously, which drives a gear wheel one 404 and a belt wheel 405 to rotate by engaging, and the belt wheel 405 can drive another belt wheel 405 and gear wheel one 404 to rotate in the same direction through the belt, and another gear wheel one 404 can drive another extension column 402 to move reversely through the rack 403 engaged therewith, so that the transmission arm of wheel disc 3 can be greatly increased, and the driving process is more relaxed.

[0028] As shown in the figure, Figure 1 And Figure 3 As shown in the figure, two connecting assemblies 5 are installed outside valve body 1, and two connecting assemblies 5 are respectively located at both ends of valve body 1.

[0029] The connecting assembly 5 includes one or more mounting frames 501 fixedly connected to the flange disc circumferential outer wall of the valve body 1, one or more mounting frames 501 are rotatably connected with one screw rod 502 inside through the bearing, the screw rod 502 is externally threaded and sleeved with a clamping plate 504, two limit rods 503 are fixedly connected inside the mounting frame 501, and the clamping plate 504 is slidably sleeved outside the two limit rods 503.

[0030] The top end of the more than one screw rod 502 is coaxially fixed with a bevel gear 505, the outer wall of the valve body 1 is coaxially fixed with a mounting ring 506, the outer wall of one end of the mounting ring 506 is rotatably connected with a bevel gear ring 507 through a bearing, and the more than one bevel gear 505 is engaged with the bevel gear ring 507.

[0031] When the accessories inside the valve body 1 are damaged and need to be repaired, the bevel gear ring 507 is rotated along the mounting ring 506, which drives the bevel gear 505 to rotate through engagement, and the screw rod 502 connected with the bevel gear 505 is driven to rotate synchronously, the clamping plate 504 limited by the limiting rod 503 can be driven away from the valve body 1 by the screw rod 502, when the clamping plate 504 no longer contacts the flange of the external pipeline, the valve body 1 is no longer limited, and therefore can be quickly removed, which is beneficial to improve the repair efficiency.

[0032] As shown in Figure 2 and Figure 4 , the outer wall of one side of the wheel disc 3 is fixedly connected with a horizontally arranged extension plate 406, the extension plate 406 is slidably inserted with a clamping plate 407, the outer wall of the clamping plate 407 is sleeved with a spring 408, the two ends of the two springs 408 are fixedly connected with the clamping plate 407 and the extension plate 406 respectively, and the outer wall of the top of one of the extension columns 402 is provided with a toothed clamping groove matched with the clamping plate 407.

[0033] When the top of one of the extension columns 402 moves, since the side wall of the clamping plate 407 is an inclined surface, the clamping groove of the top wall of the extension column 402 can drive the clamping plate 407 to move upward against the pushing force of the spring 408, and the other side of the clamping plate 407 is a vertical surface, which can ensure that the extension column 402 will not move into the limiting groove 401 when in use, and is beneficial to improve the stability.

[0034] As shown in Figure 1 , two valve seats are arranged in the valve body 1, the same valve rod is rotatably connected between the two valve seats, and a molybdenum disulfide lubricant is added between the valve rod and the packing of the valve seat, the lubricant has excellent lubricating performance and wear resistance, so that the resistance of the valve rod during rotation is smaller, and the torque is reduced.

[0035] As shown in Figure 3 , the outer wall of one of the more than one clamping plates 504 is fixedly connected with the more than one reinforcing ribs 508, which can increase the strength of the clamping plate 504, so that the connection between the valve body 1 and the external pipeline is tight enough, and leakage is avoided.

[0036] The utility model provides a kind of small torque hard sealing butterfly valve, specific working principle as follows:

[0037] When the device works, if the flow of the valve needs to be operated, a lengthening column 402 is pushed by a handle, the lengthening column 402 slides along the limiting groove 401 to one side, the rack 403 fixed on the top of the lengthening column 402 also moves synchronously, which drives a gear wheel I 404 and a belt wheel 405 to rotate through engagement, the belt wheel 405 can drive another belt wheel 405 and the gear wheel I 404 to rotate in the same direction through a belt, another gear wheel I 404 can drive another lengthening column 402 to move reversely through the rack 403 engaged with it, thus the transmission arm of the wheel disc 3 can be greatly increased, the driving process is ensured to be more relaxed, when the top lengthening column 402 moves, because the side wall of the clamping plate 407 is an inclined plane, the clamping groove of the top wall of the lengthening column 402 can drive the clamping plate 407 to move upward against the spring 408, and the other side of the clamping plate 407 is a vertical plane, which will ensure that the lengthening column 402 will not move to the inside of the limiting groove 401 when it is used, which is beneficial to improve the stability, if the accessories inside the valve body 1 are damaged and need to be repaired, the bevel gear ring 507 is rotated along the mounting ring 506, which drives the bevel gear 505 to rotate through engagement, the screw rod 502 connected with it will be driven to rotate synchronously, the clamping plate 504 limited by the limiting rod 503 can be driven by the screw rod 502 to move away from the valve body 1, when the clamping plate 504 no longer contacts the flange of the external pipeline, the valve body 1 will no longer be limited, thus it can be quickly taken down, which is beneficial to improve the maintenance efficiency.

[0038] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small torque hard sealing butterfly valve comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected with a shell (2) on the top of the circumferential outer wall, one side of the outer wall of the shell (2) is rotatably connected with a wheel disc (3) through a bearing, an extension assembly (4) is installed on the outer portion of the wheel disc (3), the extension assembly (4) comprises two limiting grooves (401) formed on one side of the outer wall of the wheel disc (3), the two limiting grooves (401) are horizontally arranged, and one extension column (402) is slidably inserted into each limiting groove (401), the outer wall of one end of the two extension columns (402) is fixedly connected with a horizontally arranged rack (403), and the two racks (403) are oppositely arranged.

2. A low torque hard sealing butterfly valve according to claim 1, characterized in that: The outer wall of one side of the wheel disc (3) is rotatably connected with two gear wheels (404) through a bearing, the two gear wheels (404) are respectively engaged with the two racks (403), and the outer wall of one side of the two gear wheels (404) is coaxially fixed with a belt wheel (405), and the two belt wheels (405) are sleeved with the same belt.

3. A low torque hard sealing butterfly valve according to claim 1, characterized in that: The valve body (1) is externally provided with two connecting assemblies (5), and the two connecting assemblies (5) are respectively arranged at the two ends of the valve body (1).

4. A low torque hard sealing butterfly valve according to claim 3, characterized in that: The connecting assembly (5) comprises one or more mounting frames (501) fixedly connected with the flange plate of the valve body (1), and one or more mounting frames (501) are rotatably connected with a lead screw (502) through a bearing, the outer portion of the lead screw (502) is threadedly sleeved with a clamping plate (504), the inner portion of the mounting frame (501) is fixedly connected with two limiting rods (503), and the clamping plate (504) is slidably sleeved on the outer portion of the two limiting rods (503).

5. A low torque hard sealing butterfly valve according to claim 4, characterized in that: The outer wall of one end of the lead screw (502) is coaxially fixed with a bevel gear (505), the circumferential outer wall of the valve body (1) is coaxially fixed with a mounting ring (506), the outer wall of one end of the mounting ring (506) is rotatably connected with a bevel gear ring (507) through a bearing, and the bevel gear ring (507) is engaged with the bevel gear (505).

6. A low torque hard sealing butterfly valve according to claim 1, characterized in that: The outer wall of one side of the wheel disc (3) is fixedly connected with a horizontally arranged extension plate (406), the inner portion of the extension plate (406) is slidably inserted with a clamping plate (407), the outer portion of the clamping plate (407) is sleeved with a spring (408), and the two ends of the two springs (408) are fixedly connected with the clamping plate (407) and the extension plate (406), respectively, and the outer wall of the top of the extension column (402) is provided with a toothed clamping groove matched with the clamping plate (407).

7. A low torque hard sealing butterfly valve as claimed in claim 1, wherein: The inner portion of the valve body (1) is provided with two valve seats, and the same valve rod is rotatably connected between the two valve seats, and a molybdenum disulfide lubricant is added between the valve rod and the valve seat packing.

8. A low torque hard sealing butterfly valve according to claim 4, characterized in that: The outer portion of the clamping plate (504) is fixedly connected with one or more reinforcing ribs (508).

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