Sediment-proof butterfly valve

Abstract

The utility model discloses an anti-sediment butterfly valve which comprises a butterfly valve body, the outer surface of the butterfly valve body is fixedly sleeved with a connecting flange, a time control switch is fixedly installed on the outer surface of the butterfly valve body, the anti-sediment butterfly valve further comprises a conical sand collecting hopper, the outer surface of one end of the conical sand collecting hopper is in threaded connection with a sealing cover, and an anti-sediment device is arranged in the butterfly valve body. The silt preventing device comprises a first annular mounting block, the outer surface of the first annular mounting block is fixedly connected with the inner wall of the butterfly valve body in a sleeving mode, and the two conical sand collecting hoppers are located on the two sides of the lower portion of the first annular mounting block correspondingly; one side of the non-return plate is rotationally connected with the inner wall above the conical sand collecting hopper, and the included angle between the non-return plate and the inner wall of the conical sand collecting hopper is an acute angle; sediment falls to the bottom of the conical sand collecting hopper to be collected, when water flows, the silt in the conical sand collecting hopper is blocked by the check plate and is prevented from being carried into the pipeline again, and the situation that the pipeline is blocked is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a prevent silt butterfly valve. BACKGROUND

[0002] The butterfly valve is also called flap valve, it is a simple structure regulating valve, can be used for low pressure pipeline medium on-off control butterfly valve is to refer to the closing piece as disc, rotates around the valve shaft to reach the opening and closing of a kind of valve, valve can be used to control air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium and so on various types fluid flow, mainly plays cut-off and throttling role on pipeline, butterfly valve actuator is a disc-shaped butterfly plate, rotates in the valve body around its own axis, to achieve opening and closing or adjusting purpose, corresponding to more silt and also silt liquid conveying process, often because of silt blockage or loss of valve body.

[0003] Chinese patent CN216742888U proposes a kind of prevent silt butterfly valve, solve the problem that most of existing butterfly valve is blocked by silt filter screen, since a small part of silt with strong adhesion force is adsorbed on the surface of silt filter screen after long time use, but in the technical scheme, conical sand collecting hopper is located at the side of filter screen, when silt on filter screen is brushed off, silt will fall on the inner wall of annular mounting block, also will fall in the inner wall of butterfly valve body on the other side of filter screen, cause unable to collect, when water flows again, silt can be adhered on filter screen again under the driving of water flow, and silt in conical sand collecting hopper is also easily carried to pipe again by water flow, possibly lead to pipe blockage, therefore there is room for improvement. UTILITY MODEL CONTENTS

[0004] The utility model aims at a kind of prevent silt butterfly valve, to solve the problem raised in background art.

[0005] The utility model discloses to solve the above technical problem, adopt the following technical scheme: a kind of prevent silt butterfly valve, including butterfly valve body, the outer surface of butterfly valve body is all fixed sleeve and is connected with connection flange, the outer surface of butterfly valve body is fixedly installed with time control switch, still include conical sand collecting hopper, the outer surface of one end of conical sand collecting hopper is threadedly connected with sealing cover, silt prevention device is equipped in butterfly valve body, the silt prevention device includes first annular mounting block, the outer surface of first annular mounting block is fixedly sleeved with the inner wall of butterfly valve body, conical sand collecting hopper is equipped with two and is respectively located the lower sides of first annular mounting block;Still include one side and the upper inner wall of conical sand collecting hopper rotationally connected, the included angle of check plate and the inner wall of conical sand collecting hopper is set as acute angle;Still include the limiting assembly for limiting the upward deflection of check plate.

[0006] As a further optimization of the utility model, the limiting assembly comprises a spring arranged below the check plate, the lower end of the spring is fixedly connected with the inner wall of the conical sand collecting hopper, the side wall of the conical sand collecting hopper is provided with a limiting block, and the end of the limiting plate abuts against the limiting block.

[0007] As a further optimization of the utility model, the first annular mounting block is at an acute angle with the inner wall of the butterfly valve body at the upper end and the lower end.

[0008] As a further optimization of the utility model, the included angle is 60°-75°.

[0009] As a further optimization of the utility model, the outer surface of the butterfly valve body is fixedly provided with a time control switch, the side surface of the first annular mounting block is provided with an annular sliding groove, the inner wall of the annular sliding groove is slidably connected with a sliding block, the side surface of the plurality of sliding blocks is fixedly connected with a connecting rod, the end surface of the plurality of connecting rods is fixedly connected with an annular rotating block, the inner wall of the first annular mounting block is fixedly sleeved with an annular silt filter screen, the inner wall of the annular silt filter screen is fixedly sleeved with a second annular mounting block, the inner wall of the second annular mounting block is fixedly sleeved with a waterproof box, the side inner wall of the waterproof box is fixedly provided with a motor, the output shaft of the motor is fixedly provided with a transmission shaft through a shaft coupling, the end surface of the transmission shaft is fixedly sleeved with an annular fixed block, the outer surface of the annular fixed block is fixedly connected with a rotating rod, the end surface of the plurality of rotating rods is fixedly connected with the inner wall of the annular rotating block, the side surface of the plurality of rotating rods is provided with a mounting groove, the inside of the plurality of mounting grooves is provided with a brush, and the end free end of the plurality of brushes is in contact with the side surface of the annular silt filter screen.

[0010] The utility model discloses the beneficial effects are as follows: when the time control switch is started by the staff, the time value set by the staff will start the motor regularly, the motor drives the annular fixed block to rotate through the transmission shaft, the annular fixed block drives the annular rotating block to rotate through the rotating rod, the rotation of the annular rotating block is stably rotated through the cooperation of the sliding block and the connecting rod, so as to drive the rotating rod to rotate stably, the rotation of the rotating rod drives the brush in the mounting groove to contact and rub with the annular silt filter screen, and the silt with strong adhesion on the surface is brushed off.

[0011] The annular mounting block is obliquely arranged, thereby avoiding that the silt falls on the inner wall of the annular mounting block, two conical silt collecting hoppers are arranged, so that the silt falling to both sides can be collected by the two conical silt collecting hoppers, when the silt enters the conical silt collecting hopper, the silt pushes the check plate downward by weight, deflects and extrudes the spring, the silt falls to the bottom of the conical silt collecting hopper for collection, the spring resets to push the check plate to reascend and deflect, the end of the check plate reinterfaces with the limiting block, thereby limiting the rotation angle of the check plate, when the water flows, the silt in the conical silt collecting hopper is blocked by the check plate, thereby avoiding being carried into the pipeline again, and reducing the pipeline blockage. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the utility model;

[0013] Figure 2 It is a sectional structure schematic view of the utility model;

[0014] Figure 3 It is Figure 2 the enlarged schematic view in the.

[0015] The meaning of the reference numerals in the drawing is as follows: 1, butterfly valve body; 11, motor; 12, time control switch; 13, first annular mounting block; 131, annular sliding groove; 14, sliding block; 15, annular rotating block; 16, rotating rod; 17, annular fixed block; 18, transmission shaft; 19, brush; 2, conical silt collecting hopper; 21, sealing cover; 3, check plate; 4, spring; 5, limiting block. DETAILED DESCRIPTION

[0016] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the present specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0017] Referring to the accompanying Figures 1-3 , the utility model discloses the present embodiment further sets up: a kind of anti-silt butterfly valve, including butterfly valve body 1, the outer surface of butterfly valve body 1 is all fixedly sleeved with connection flange, the outer surface of butterfly valve body 1 is fixedly installed with time control switch 12, further include conical silt collecting hopper 2, the outer surface of one end of conical silt collecting hopper 2 is threadedly connected with sealing cover 21, butterfly valve body 1 is equipped with anti-silt device, and anti-silt device includes first annular mounting block 13, the outer surface of first annular mounting block 13 is fixedly sleeved with the inner wall of butterfly valve body 1, and conical silt collecting hopper 2 is equipped with two and respectively side first annular mounting block 13 below two sides;Further include one side and the inner wall rotationally connected above conical silt collecting hopper 2, the included angle of check plate 3 and the inner wall of conical silt collecting hopper 2 is set to acute angle;Further include the limiting assembly for limiting the upward deflection of check plate 3;

[0018] Further, the limiting assembly comprises a spring 4 arranged below the check plate 3, the lower end of the spring 4 is fixedly connected with the inner wall of the conical sand collecting hopper 2, the side wall of the conical sand collecting hopper 2 is provided with a limiting block 5, and the end of the limiting plate is abutted with the limiting block 5;

[0019] Further, the upper end and the lower end of the first annular mounting block 13 are both in an acute angle with the inner wall of the butterfly valve body 1, and the acute angle is preferably 60°-75°.

[0020] The outer surface of the butterfly valve body 1 is fixedly provided with a time control switch 12, the side surface of the first annular mounting block 13 is provided with an annular sliding groove 131, the inner wall of the annular sliding groove 131 is slidably connected with a sliding block 14, the side surface of the plurality of sliding blocks 14 is fixedly connected with a connecting rod, the end surface of the plurality of connecting rods is fixedly connected with an annular rotating block 15, the inner wall of the first annular mounting block 13 is fixedly sleeved with an annular sand filtering net, the inner wall of the annular sand filtering net is fixedly sleeved with a second annular mounting block, the side inner wall of the waterproof box is fixedly provided with a motor 11, the output shaft of the motor 11 is fixedly provided with a transmission shaft 18 through a shaft coupling, the end surface of the transmission shaft 18 penetrates and extends to the side surface of the waterproof box, the end outer surface of the transmission shaft 18 is fixedly sleeved with an annular fixed block 17, the outer surface of the annular fixed block 17 is fixedly connected with a rotating rod 16, the end surface of the plurality of rotating rods 16 is fixedly connected with the inner wall of the annular rotating block 15, the side surface of the plurality of rotating rods 16 is provided with a mounting groove, the inside of the plurality of mounting grooves is provided with a brush 19, and the end free end of the plurality of brushes 19 is in contact with the side surface of the annular sand filtering net, the above structure is the prior art mentioned in the background technology, and will not be described in detail in the embodiment.

[0021] The principle of the utility model is that when the time control switch 12 is started by the staff, the motor 11 is started to work through the time value set by the staff, the motor 11 drives the annular fixed block 17 to rotate through the transmission shaft 18, the annular fixed block 17 drives the annular rotating block 15 to rotate through the rotating rod 16, the rotation of the annular rotating block 15 is stably rotated through the cooperation of the sliding block 14 and the connecting rod, so as to drive the rotating rod 16 to stably rotate, the rotation of the rotating rod 16 drives the brush 19 in the mounting groove to contact and rub with the annular sand filtering net, and the mud with strong adhesion force on the surface of the annular sand filtering net is brushed off, and the above principle is the prior art mentioned in the background technology, and will not be described in detail in the embodiment.

[0022] The annular mounting block is obliquely arranged, so that the silt is prevented from falling on the inner wall of the annular mounting block. Two conical silt collecting hoppers 2 are arranged, so that the silt falling to both sides can be collected by the two conical silt collecting hoppers 2. When the silt enters the conical silt collecting hoppers 2, the silt pushes the check plate 3 downward by weight, deflects and extrudes the spring 4, and then the silt falls to the bottom of the conical silt collecting hoppers 2 for collection. The spring 4 is reset to push the check plate 3 to re-ascend and deflect, and the end of the check plate 3 re-contacts with the limiting block 5, so as to limit the rotation angle of the check plate 3. When the water flows, the silt in the conical silt collecting hoppers 2 is blocked by the check plate 3, so as to avoid being carried into the pipeline again, and to reduce the pipeline blockage.

[0023] The above only describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and the above-mentioned improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A sand prevention butterfly valve comprising a butterfly valve body (1), characterized in that: The outer surface of the butterfly valve body (1) is fixedly sleeved with a connecting flange, further comprising a conical sand collecting hopper (2), one end of the outer surface of the conical sand collecting hopper (2) is threadedly connected with a sealing cover (21), the butterfly valve body (1) is internally provided with a sand preventing device, the sand preventing device comprises a first annular mounting block (13), the outer surface of the first annular mounting block (13) is fixedly sleeved with the inner wall of the butterfly valve body (1), characterized in that the conical sand collecting hopper (2) is provided with two and is respectively located below the two sides of the first annular mounting block (13); further comprising a check plate (3) which is rotationally connected with the upper inner wall of the conical sand collecting hopper (2) on one side, the included angle between the check plate (3) and the inner wall of the conical sand collecting hopper (2) is set as an acute angle; further comprising a limiting assembly for limiting upward deflection of the check plate (3).

2. The mud-proof butterfly valve according to claim 1, wherein, The limiting assembly comprises a spring (4) which is arranged below the check plate (3), the lower end of the spring (4) is fixedly connected with the inner wall of the conical sand collecting hopper (2), the side wall of the conical sand collecting hopper (2) is provided with a limiting block (5), the end portion of the check plate is abutted with the limiting block (5).

3. The mud-proof butterfly valve according to claim 1, wherein, The upper end and the lower end of the first annular mounting block (13) are both set as an acute angle with the inner wall of the butterfly valve body (1).

4. The mud-proof butterfly valve according to claim 3, wherein, The included angle is 60°-75°.

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