Eccentric butterfly valve with anti-blocking function

Abstract

The invention provides an eccentric butterfly valve with an anti-blocking function, and belongs to the technical field of valve body equipment, the eccentric butterfly valve comprises a pipe body, the pipe body is connected with a valve core and an electric controller, a filtering baffle plate is arranged in the pipe body, the eccentric butterfly valve further comprises an anti-blocking assembly, an anti-blocking assembly, a valve core and an electric controller, and the anti-blocking assembly is used for preventing the pipe body from being blocked; the overflow assembly is used for adjusting the pressure intensity of the pipe body; the device has the beneficial effects that the sleeve is driven to move synchronously through rotation of the valve element, and then the transmission rod and the rotating plate are rotated, so that the cleaning brush cleans the surface of the filtering baffle, the attached impurities are brushed off, the impurities are prevented from being accumulated to block the filtering baffle, and the stable filtering effect is ensured; in addition, the piston piece in the overflow cylinder can be adjusted when the pressure intensity of the pipe body rises and can reset after the pressure intensity returns to normal, the normal flowing state of media in the pipe body is maintained, meanwhile, impurities are collected, and the water leakage condition is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of valve body equipment, and more specifically, to an eccentric butterfly valve with an anti-blocking function. Background Art

[0002] A butterfly valve, also known as a flap valve, is a simple-structured regulating valve. A butterfly valve that can be used for the on-off control of a medium in a low-pressure pipeline refers to a valve in which the closing member (valve flap or butterfly plate) is a disc and rotates around the valve shaft to achieve opening and closing. The eccentric butterfly valve is widely used in fields such as metallurgy, chemical industry, petroleum, heat, energy, and light industry. Its excellent cutting performance and durability make it perform well in these fields. At the same time, it is small in size, light in weight, economical and practical, and easy to maintain.

[0003] In the prior art, most devices filter the liquid entering the butterfly valve through a filter screen. When the filter screen filters the liquid for a long time, impurities in the liquid may adhere to the surface of the filter screen, especially near the center of the filter screen. When the filtered impurities accumulate too much on the filter screen, it may cause the filter screen to become blocked, thereby reducing the filtering effect of the liquid. When the butterfly valve is blocked by silt, the flow area of the medium in the pipeline will decrease, resulting in an increase in local pressure. In a drainage pipeline, the accumulation of silt makes the water passing section at the butterfly valve smaller, and the water flow speed increases, generating a greater pressure on the butterfly valve and the surrounding pipeline. Over time, the silt accumulates continuously, and the degree of blockage intensifies. When the pressure increases, the pressure borne on the sealing surface also increases accordingly. In a long-term high-pressure state, the sealing material will gradually deform and wear. The change in pressure may also cause the connection parts between the components of the butterfly valve to become loose. Connecting parts such as bolts and nuts may become loose under high pressure, reducing the overall structural stability of the valve and further affecting the sealing effect, ultimately resulting in water leakage. How to invent an eccentric butterfly valve with an anti-blocking function to solve these problems has become an urgent problem for those skilled in the art. Summary of the Invention

[0004] To make up for the above deficiencies, the present invention provides an eccentric butterfly valve with an anti-blocking function, aiming to solve the problems that may cause the filter screen to be blocked, reduce the filtering effect, and in a long-term high-pressure state, the connection parts between the components of the butterfly valve become loose, resulting in water leakage.

[0005] The present invention is implemented as follows:

[0006] The present invention provides an eccentric butterfly valve with an anti-blocking function, including a pipe body, the pipe body is connected with a valve core and an electric controller, and a filter baffle is arranged inside the pipe body. The butterfly valve further includes:

[0007] An anti-blocking assembly, the anti-blocking assembly is located inside the pipe body, and the anti-blocking assembly is used to prevent the pipe body from being blocked;

[0008] An overflow assembly, the overflow assembly is fixedly connected to the pipe body, and the overflow assembly is used to adjust the pressure of the pipe body.

[0009] Preferably, the pipe body is rotatably connected to the valve core, one side of the pipe body is fixedly connected to the electric controller, the output end of the electric controller is fixedly connected to one end of the valve core, and the inside of the pipe body and the filter baffle are detachably connected.

[0010] Preferably, a chute is provided inside the pipe body, there are two chutes, and the two chutes are rotationally symmetric about the central axis of the pipe body. The chutes are located between the filter baffle and the valve core. A sliding rod is fixedly connected to the inner wall of the chute, and a return spring is sleeved on the outer wall of the sliding rod.

[0011] Preferably, the anti-blocking assembly includes a push rod, the push rod is arc-shaped, and limiting sliders are fixedly connected to both ends of the push rod. The limiting sliders are slidably connected to the chute, the limiting sliders are sleeved on the outer wall of the sliding rod, one side of the limiting slider is fixedly connected to one end of the return spring, and the end of the sliding rod away from the limiting slider is fixedly connected to the end of the chute close to the filter baffle.

[0012] Preferably, the inner wall of the inner circle of the push rod is slidably connected to the valve core, a sleeve is fixedly connected to the outer wall of the push rod, and limiting rods are fixedly connected to the inner wall of the sleeve. There are two limiting rods, and the two limiting rods are rotationally symmetric about the central axis of the sleeve.

[0013] Preferably, the anti-blocking assembly further includes a transmission rod, the transmission rod is rotatably connected to the side wall of the filter baffle, two helical grooves distributed in a circular array are provided on the outer wall of one end of the transmission rod, the transmission rod is slidably connected to the inner wall of the sleeve, and the inner wall of the helical groove and the limiting rod are in limiting sliding connection.

[0014] Preferably, a rotating plate is fixedly connected to the end of the transmission rod away from the sleeve, and a cleaning brush is provided on the side of the rotating plate close to the filter baffle.

[0015] Preferably, the overflow assembly includes an overflow cylinder, connection pipes are fixedly connected to both ends of the overflow cylinder, one end of the connection pipe is fixedly connected to the outer wall of the pipe body, and one of the connection pipes is located on one side of the filter baffle.

[0016] Preferably, a piston cylinder and a side plate are provided inside the overflow cylinder, the side plate is fixedly connected to the inner wall of the overflow cylinder, one end of the piston cylinder is fixedly connected to the side wall of the side plate, the other end of the piston cylinder is fixedly connected to the inner wall of the overflow cylinder, and a through hole is provided on the side wall of the side plate, and the through hole is located outside the piston cylinder.

[0017] Preferably, a piston member, a telescopic spring and a sealing plate are provided inside the piston cylinder; the sealing plate is fixedly connected to the inner wall of the piston cylinder; the side wall of the sealing plate is slidably connected to the outer wall of the piston member; the piston member is arranged in an "I" shape; one end of the piston member slides with the inner wall piston of the piston cylinder; a plurality of filter holes distributed in a circular array are provided on the inner wall of the piston cylinder; the two ends of the telescopic spring are respectively fixedly connected to the side plate and the side wall of the piston member.

[0018] The beneficial effects of the present invention are:

[0019] 1. When the valve core rotates, the push rod slidably connected to it will move in the slide groove, and the limit sliders at both ends of the push rod will slide on the slide rod, compressing the reset spring at the same time, and driving the sleeve of the outer ring wall to move synchronously, and then through the limit sliding between the limit rod and the spiral groove, the transmission rod can be rotated, and the transmission rod drives the rotating plate to rotate, so that the cleaning brush on the rotating plate cleans the surface of the filter baffle, brushes off the attached impurities, prevents the impurities from accumulating and clogging the filter baffle, and ensures a stable filtering effect.

[0020] 2. When the medium entering the overflow cylinder generates pressure on the piston, the piston will slide in the piston cylinder toward the side plate and squeeze the telescopic spring. During the movement of the piston, the medium will enter the piston cylinder through the filter hole on the inner wall of the piston cylinder, and then flow out through the through hole on the side wall of the side plate and return to the inside of the tube body. In this way, part of the medium in the tube body is transferred to the overflow cylinder, and the pressure in the tube body is reduced, avoiding damage to the butterfly valve and the pipeline system due to excessive pressure. The piston in the overflow cylinder can not only be adjusted when the pressure in the tube body increases, but also reset after the pressure returns to normal, maintaining the normal flow state of the medium in the tube body, while collecting impurities to avoid water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall front structure of an eccentric butterfly valve with anti-clogging function provided by an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall rear side structure of an eccentric butterfly valve with anti-clogging function provided by an embodiment of the present invention;

[0024] Figure 3It is a schematic diagram of the internal structure of the pipe body of an eccentric butterfly valve with an anti-blocking function provided by an embodiment of the present invention;

[0025] Figure 4 It is an eccentric butterfly valve with an anti-blocking function provided by an embodiment of the present invention Figure 3 The enlarged schematic diagram of the structure at A in it;

[0026] Figure 5 It is a schematic diagram of the anti-blocking component structure of an eccentric butterfly valve with an anti-blocking function provided by an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the push rod structure of an eccentric butterfly valve with an anti-blocking function provided by an embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of the overflow component structure of an eccentric butterfly valve with an anti-blocking function provided by an embodiment of the present invention.

[0029] In the figure: 1. Pipe body; 101. Slide bar; 102. Return spring; 103. Chute; 2. Electric controller; 3. Filter baffle; 4. Anti-blocking component; 41. Push rod; 42. Rotating plate; 421. Cleaning brush; 43. Transmission rod; 431. Spiral groove; 44. Limit slider; 45. Sleeve; 451. Limit rod; 5. Overflow component; 51. Connecting pipe; 52. Overflow cylinder; 53. Piston part; 54. Piston cylinder; 541. Filter hole; 55. Side plate; 551. Through hole; 56. Telescopic spring; 57. Sealing plate; 6. Valve core. Specific embodiments

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

[0031] Example 1

[0032] Refer to Figures 1 - 7 , an eccentric butterfly valve with an anti-blocking function, including a pipe body 1, the pipe body 1 is connected with a valve core 6 and an electric controller 2, a filter baffle 3 is arranged inside the pipe body 1, and further includes:

[0033] An anti-blocking component 4, the anti-blocking component 4 is located inside the pipe body 1, and the anti-blocking component 4 is used to prevent the pipe body 1 from being blocked;

[0034] The overflow assembly 5 is fixedly connected to the pipe body 1, and the overflow assembly 5 is used to adjust the pressure of the pipe body 1.

[0035] Furthermore, the pipe body 1 is rotatably connected to the valve core 6. One side of the pipe body 1 is fixedly connected to the electric controller 2, and the output end of the electric controller 2 is fixedly connected to one end of the valve core 6. The interior of the pipe body 1 and the filter baffle 3 are detachably connected.

[0036] Blocking of impurities by the filter baffle 3: When the device is in use, the filter baffle 3 inside the pipe body 1 can preliminarily block impurities in the medium, preventing large particle impurities from directly contacting the valve core 6, reducing the risk of the valve core 6 being blocked, ensuring the normal opening and closing of the valve. When transporting sewage containing impurities, the filter baffle 3 can intercept impurities such as sediment and debris, preventing them from entering the sealing area between the valve core 6 and the valve seat inside the pipe body 1, maintaining the sealing performance, and the opening and closing of the valve core 6 can be quickly completed through the control of the electric controller 2.

[0037] Refer to Figures 2 - 6 Furthermore, two sliding grooves 103 are provided inside the pipe body 1. The two sliding grooves 103 are rotationally symmetric about the central axis of the pipe body 1. The sliding grooves 103 are located between the filter baffle 3 and the valve core 6. A sliding rod 101 is fixedly connected to the inner wall of the sliding groove 103, and a return spring 102 is sleeved on the outer wall of the sliding rod 101. The anti-blocking assembly 4 includes a push rod 41, which is arc-shaped. Limiting sliders 44 are fixedly connected to both ends of the push rod 41. The limiting sliders 44 are slidably connected to the sliding grooves 103. The limiting sliders 44 are sleeved on the outer wall of the sliding rod 101. One side of the limiting slider 44 is fixedly connected to one end of the return spring 102. The end of the sliding rod 101 away from the limiting slider 44 is fixedly connected to the end of the sliding groove 103 close to the filter baffle 3. The inner circumferential wall of the push rod 41 is slidably connected to the valve core 6. A sleeve 45 is fixedly connected to the outer circumferential wall of the push rod 41. Two limiting rods 451 are fixedly connected to the inner wall of the sleeve 45. The two limiting rods 451 are rotationally symmetric about the central axis of the sleeve 45. The anti-blocking assembly 4 further includes a transmission rod 43, which is rotatably connected to the side wall of the filter baffle 3. Two helical grooves 431 distributed in a circular array are provided on the outer wall of one end of the transmission rod 43. The transmission rod 43 is slidably connected to the inner wall of the sleeve 45. The inner wall of the helical groove 431 is in limiting sliding connection with the limiting rod 451. The end of the transmission rod 43 away from the sleeve 45 is fixedly connected to a rotating plate 42, and a cleaning brush 421 is provided on the side of the rotating plate 42 close to the filter baffle 3.

[0038] The anti-blocking component 4 cleans the filter baffle 3: when the valve core 6 rotates to open the pipe body 1, the push rod 41 slidably connected thereto moves in the slide groove 103, and the limit sliders 44 at both ends of the push rod 41 slide on the slide rod 101, while compressing the reset spring 102 to ensure the stability of the push rod 41 during movement. When the push rod 41 moves, the sleeve 45 of the outer ring wall can be driven to move synchronously, and the limit rod 451 in the sleeve 45 slides along the spiral groove 431 on the transmission rod 43. Through the limit sliding between the two, the transmission rod 43 can be The transmission rod 43 rotates, and the rotating plate 42 is driven to rotate, so that the cleaning brush 421 on the rotating plate 42 cleans the surface of the filter baffle 3, brushes off the attached impurities, and prevents the impurities from accumulating and clogging the filter baffle 3, thereby ensuring a stable filtering effect. In the process of closing the valve core 6, the push rod 41 can be driven to return to its original position through the reset spring 102. At this time, the rotating plate 42 can still be rotated in the opposite direction through the action of the limit rod 451 and the spiral groove 431, so as to once again clean the surface of the filter baffle 3 to reduce the occurrence of blockage.

[0039] Embodiment 2

[0040] Reference Figure 3 and Figure 7 , further; the overflow assembly 5 includes an overflow cylinder 52, both ends of the overflow cylinder 52 are fixedly connected with connecting pipes 51, one end of the connecting pipe 51 is fixedly connected to the outer wall of the tube body 1, and one of the connecting pipes 51 is located on one side of the filter baffle 3; the overflow cylinder 52 is provided with a piston cylinder 54 and a side plate 55 inside, the side plate 55 is fixedly connected to the inner wall of the overflow cylinder 52, one end of the piston cylinder 54 is fixedly connected to the side wall of the side plate 55, and the other end of the piston cylinder 54 is fixedly connected to the inner wall of the overflow cylinder 52, and the side wall of the side plate 55 is provided with a through hole 551, through The hole 551 is located on the outside of the piston cylinder 54; the interior of the piston cylinder 54 is provided with a piston member 53, a telescopic spring 56 and a sealing plate 57; the sealing plate 57 is fixedly connected to the inner wall of the piston cylinder 54; the side wall of the sealing plate 57 is slidably connected to the outer wall of the piston member 53; the piston member 53 is arranged in an "I" shape; one end of the piston member 53 slides with the inner wall of the piston cylinder 54; a plurality of filter holes 541 distributed in a circumferential array are provided on the inner wall of the piston cylinder 54; the two ends of the telescopic spring 56 are fixedly connected to the side plate 55 and the side wall of the piston member 53, respectively.

[0041] Overflow assembly 5 for collecting sludge and pressure relief treatment of pipe body 1: The medium in pipe body 1 will flow into overflow cylinder 52 through connecting pipe 51. At this time, when the pressure in pipe body 1 increases, the medium entering overflow cylinder 52 generates pressure on piston member 53. Since piston member 53 is in the shape of "I" and forms a piston sliding connection with the inner wall of piston cylinder 54, under the action of the medium pressure, piston member 53 will slide in piston cylinder 54 towards the side plate 55. During this process, piston member 53 squeezes telescopic spring 56, causing it to undergo elastic deformation. The elastic force of telescopic spring 56 will gradually increase as piston member 53 moves, generating resistance to the movement of piston member 53. When the elastic force of telescopic spring 56 reaches equilibrium with the medium pressure, piston member 53 stops moving. During the movement of piston member 53, the medium will enter the interior of piston cylinder 54 through filter holes 541 on the inner wall of piston cylinder 54, and then flow out through through holes 551 on the side wall of side plate 55 and return to the interior of pipe body 1. In this way, part of the medium in pipe body 1 is transferred to overflow cylinder 52, and the pressure in pipe body 1 is reduced, avoiding damage to the butterfly valve and pipeline system due to excessive pressure. In the drainage pipeline, when heavy rain causes an increase in water flow and the pressure in pipe body 1 increases, piston member 53 will move under the action of the medium pressure to adjust the pressure in pipe body 1. When the pressure in pipe body 1 returns to normal, telescopic spring 56 will, relying on its own elastic restoring force, push piston member 53 to reset towards the direction close to pipe body 1. During the reset process, piston member 53 squeezes the medium that entered piston cylinder 54 before to one side. However, due to the blocking effect of filter holes 541 on the inner wall of piston cylinder 54, impurities such as sludge intercepted in piston cylinder 54 will not flow back to pipe body 1 with the medium, but will continue to be collected in piston cylinder 54. In this way, piston member 53 in overflow cylinder 52 can not only adjust when the pressure in pipe body 1 increases, but also reset when the pressure returns to normal, maintaining the normal flow state of the medium in pipe body 1, and at the same time realizing the collection of impurities, avoiding the accumulation of impurities in pipe body 1 and affecting the normal operation of the pipeline system. Moreover, overflow assembly 5 and pipe body 1 are detachably connected for easy replacement and maintenance.

[0042] It should be noted that the specific model specifications need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0043] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An eccentric butterfly valve with an anti-blocking function, comprising a pipe body (1), the pipe body (1) is connected with a valve core (6) and an electric controller (2), and a filter baffle (3) is arranged inside the pipe body (1), characterized in that, It further includes: A clogging prevention component (4), which is located inside the pipe body (1), and the clogging prevention component (4) is used to prevent the pipe body (1) from being clogged; An overflow component (5), which is fixedly connected to the pipe body (1), and the overflow component (5) is used to adjust the pressure of the pipe body (1).

2. The eccentric butterfly valve with anti-blocking function according to claim 1, wherein, The pipe body (1) is rotatably connected to the valve core (6), one side of the pipe body (1) is fixedly connected to the electric controller (2), the output end of the electric controller (2) is fixedly connected to one end of the valve core (6), and the inside of the pipe body (1) is detachably connected to the filter baffle (3).

3. The eccentric butterfly valve with anti-clogging function according to claim 1, characterized in that, A chute (103) is provided inside the pipe body (1), there are two chutes (103), and the two chutes (103) are rotationally symmetric about the central axis of the pipe body (1). The chute (103) is located between the filter baffle (3) and the valve core (6). A slide bar (101) is fixedly connected to the inner wall of the chute (103), and a return spring (102) is sleeved on the outer wall of the slide bar (101).

4. The eccentric butterfly valve with anti-blocking function according to claim 3, characterized in that, The clogging prevention component (4) includes a push rod (41), the push rod (41) is arc-shaped, and limit sliders (44) are fixedly connected to both ends of the push rod (41). The limit sliders (44) are slidably connected to the chute (103), the limit sliders (44) are sleeved on the outer wall of the slide bar (101), one side of the limit slider (44) is fixedly connected to one end of the return spring (102), and the end of the slide bar (101) away from the limit slider (44) is fixedly connected to the end of the chute (103) close to the filter baffle (3).

5. The eccentric butterfly valve with anti-blocking function according to claim 4, characterized in that, The inner circumferential wall of the push rod (41) is slidably connected to the valve core (6), a sleeve (45) is fixedly connected to the outer circumferential wall of the push rod (41), and a limit rod (451) is fixedly connected to the inner wall of the sleeve (45). There are two limit rods (451), and the two limit rods (451) are rotationally symmetric about the central axis of the sleeve (45).

6. The eccentric butterfly valve with anti-blocking function according to claim 5, characterized in that, The clogging prevention component (4) further includes a transmission rod (43), the transmission rod (43) is rotatably connected to the side wall of the filter baffle (3), two spiral grooves (431) distributed in a circumferential array are provided on the outer wall of one end of the transmission rod (43), the transmission rod (43) is slidably connected to the inner wall of the sleeve (45), and the inner wall of the spiral groove (431) is in limit sliding connection with the limit rod (451).

7. The eccentric butterfly valve with anti-blocking function according to claim 6, characterized in that, A rotating plate (42) is fixedly connected to the end of the transmission rod (43) away from the sleeve (45), and a cleaning brush (421) is provided on the side of the rotating plate (42) close to the filter baffle (3).

8. The eccentric butterfly valve with anti-blocking function according to claim 1, characterized in that, The overflow component (5) includes an overflow cylinder (52), connection pipes (51) are fixedly connected to both ends of the overflow cylinder (52), one end of the connection pipe (51) is fixedly connected to the outer wall of the pipe body (1), and one of the connection pipes (51) is located on one side of the filter baffle (3).

9. The eccentric butterfly valve with anti-clogging function according to claim 8, characterized in that, Inside the overflow cylinder (52), there is a piston cylinder (54) and a side plate (55). The side plate (55) is fixedly connected to the inner wall of the overflow cylinder (52). One end of the piston cylinder (54) is fixedly connected to the side wall of the side plate (55), and the other end of the piston cylinder (54) is fixedly connected to the inner wall of the overflow cylinder (52). A through hole (551) is formed in the side wall of the side plate (55), and the through hole (551) is located outside the piston cylinder (54).

10. A kind of eccentric butterfly valve with anti-blocking function according to claim 9, characterized in that, Inside the piston cylinder (54), there is a piston member (53), a telescopic spring (56) and a sealing plate (57). The sealing plate (57) is fixedly connected to the inner wall of the piston cylinder (54). There is a sliding connection between the side wall of the sealing plate (57) and the outer wall of the piston member (53). The piston member (53) is arranged in an "I" shape. One end of the piston member (53) is in piston sliding connection with the inner wall of the piston cylinder (54). A number of filter holes (541) are formed in the inner wall of the piston cylinder (54) and are distributed in a circumferential array. The two ends of the telescopic spring (56) are respectively fixedly connected to the side plate (55) and the side wall of the piston member (53).

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