Bidirectional supporting electric butterfly valve

Abstract

The invention provides a bi-directionally supported electric butterfly valve, which is applied to the technical field of valve equipment and comprises a main valve body, bi-directional bearing packs are arranged on the left side and the right side of the main valve body respectively, and each bi-directional bearing pack comprises an axial thrust bearing, a thrust washer and a radial support bearing which are sequentially abutted in a bearing mounting cavity. The structure provides axial and radial load supports for a first valve plate rotating shaft and a second valve plate rotating shaft of the sealing valve plate respectively, the shifting risk caused by long-term use is reduced, and the valve plate automatic driving mechanism is arranged at the end of the first valve plate rotating shaft and used for driving the sealing valve plate to rotate; the valve plate manual adjusting mechanism is arranged at the end of the second valve plate rotating shaft and comprises a manual adjusting wheel and an angle positioning support provided with a valve plate angle positioning hole, and the manual adjusting wheel is provided with a valve plate angle positioning block with an elastic hemispherical contact head and clamped into different positioning holes to achieve multi-angle limiting. According to the scheme, the working stability and sealing performance of the valve plate are effectively improved, and the service life is prolonged.

Description

Technical Field

[0001] The invention is applicable to the technical field of valve equipment and provides a bidirectionally supported electric butterfly valve. Background Art

[0002] A butterfly valve is a common flow control valve, often used to control the opening and closing of high-flow gas and liquid pipelines. The valve opening is controlled by adjusting the angle of the valve disc within the valve body, thereby controlling the pipeline flow. A traditional butterfly valve typically consists of a tubular valve body with a valve disc mounted within it. The valve disc is typically rotated within the valve body by a valve disc shaft at either end. The valve disc shaft is controlled by manual or electric actuation to adjust the valve disc. In this traditional structure, a separate radial support bearing (such as a ball bearing or a rotor bearing) is typically used to achieve a rotational connection between the valve disc shaft and the valve body. However, the radial support bearing only provides axial support for the valve disc shaft. In high-pressure pipelines, the instability of the flowing medium can exert multi-directional pressure on the valve disc. This makes the valve disc shaft prone to side-to-side movement, especially after long-term use. Once the valve disc shaft moves side-to-side, the sealing between the valve disc shaft and the valve body is reduced. It can also easily cause the valve disc to interfere with the inner wall of the valve body, resulting in wear and tear, leading to damage to the valve disc and failure to meet service requirements. Summary of the Invention

[0003] To this end, the present invention provides a bidirectionally supported electric butterfly valve, which uses a bidirectional bearing group that is simultaneously equipped with an axial thrust bearing and a radial support bearing as a rotary support mechanism for the valve plate rotating shaft, thereby providing axial load support and radial load support for the valve plate rotating shaft and the sealing valve plate, reducing the left and right movement problem of the sealing valve plate after long-term use, and improving the service life of the double-supported butterfly valve.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a bidirectionally supported electric butterfly valve, comprising:

[0005] A main valve body, wherein two bidirectional bearing groups are respectively provided on the left and right sides of the main valve body, respectively referred to as a first bidirectional bearing group and a second bidirectional bearing group, wherein the bidirectional bearing group comprises a bearing mounting cavity, wherein an axial thrust bearing, a thrust washer and a radial support bearing are sequentially abutted against each other in the bearing mounting cavity, and an end cover of the bearing group is fixedly installed at the end of the bearing mounting cavity, and the end cover of the bearing group abuts against the outer ring of the radial support bearing;

[0006] A valve plate automatic driving mechanism, the valve plate automatic driving mechanism being arranged on a side of the first bidirectional bearing assembly away from the main valve body;

[0007] The sealing valve plate is arranged in the main valve body, and the left and right sides of the sealing valve plate are respectively fixedly connected with the first valve plate rotating shaft and the second valve plate rotating shaft, the first valve plate rotating shaft passes through the side of the main valve body and the first bidirectional bearing group in sequence and is driven and connected with the valve plate automatic drive mechanism, the axial thrust bearing and the radial support bearing of the first bidirectional bearing group are installed on the first valve plate rotating shaft, the second valve plate rotating shaft passes through the side of the main valve body and the second bidirectional bearing group in sequence, and the axial thrust bearing and radial support bearing of the second bidirectional bearing group are installed on the second valve plate rotating shaft.

[0008] Furthermore, the valve plate automatic driving mechanism includes an angular stroke actuator and an actuator bracket, the actuator bracket is fixedly connected to the main valve body, and the angular stroke actuator is drivingly connected to the end of the first valve plate shaft to drive the first valve plate shaft to rotate.

[0009] Furthermore, it also includes a manual adjustment mechanism for the valve plate, which is arranged on the side of the second bidirectional bearing group away from the main valve body. The manual adjustment mechanism for the valve plate includes a manual adjustment wheel, which is fixedly connected to the end of the second valve plate shaft.

[0010] Furthermore, the manual valve plate adjustment mechanism also includes an angle positioning bracket, which is fixedly connected to the main valve body. The angle positioning bracket is provided with a plurality of valve plate angle positioning holes, and the manual adjustment wheel is provided with a valve plate angle positioning block adapted to the valve plate angle positioning holes.

[0011] Furthermore, the end of the valve plate angle positioning block facing the valve plate angle positioning hole is a hemispherical contact head made of elastic material, and the hemispherical contact head can be inserted into different valve plate angle positioning holes by rotating the manual adjustment wheel.

[0012] Furthermore, the sealing valve plate is provided with a plurality of spoiler strips in parallel.

[0013] Furthermore, the main valve body includes a straight tube-shaped valve plate installation cavity, and two valve plate sealing strips are provided on the inner side wall of the valve plate installation cavity. The sealing valve plate can abut against the two valve plate sealing strips by rotating.

[0014] Furthermore, flange mounting plates are provided at ports on both sides of the valve plate mounting cavity, and the flange mounting plates are provided with valve body connecting sealing rings.

[0015] At the same time, the present invention also provides a method for using the above-mentioned bidirectionally supported electric butterfly valve, comprising the following steps:

[0016] S1: Installation step, installing the double-support butterfly valve on a designated fluid pipeline through the flange mounting plates at the ports on both sides of the valve plate mounting cavity;

[0017] S2: flow control step, the angular stroke actuator controls the first valve plate shaft to rotate to multiple preset angles, and the first valve plate shaft rotates to multiple preset angles corresponding to multiple opening angles of the sealing valve plate. At the same time, after the first valve plate shaft rotates to the preset angle, the angular stroke actuator can also brake it so that the first valve plate shaft remains at the preset angle. At the same time, the valve plate manual adjustment mechanism on the other side of the main valve body can realize the braking of the second valve plate shaft through the cooperation of several valve plate angle positioning holes and the valve plate angle positioning block. At the same time, when the angular stroke actuator controls the first valve plate shaft to rotate to the preset angle, the hemispherical contact head of the valve plate angle positioning block will just fit into one of the corresponding valve plate angle positioning holes, and different valve plate angle positioning holes correspond to different preset angles of the first valve plate shaft;

[0018] S3: Manual adjustment step. When the angular stroke actuator fails, the manual adjustment wheel is driven to rotate manually or by other driving methods, thereby driving the second valve plate shaft to rotate, thereby temporarily controlling the opening angle of the sealing valve plate. At this time, the cooperation between the valve plate angle positioning block and the different valve plate angle positioning holes can not only play a braking role but also serve as an indicator of the opening angle of the sealing valve plate, prompting the operator of the current change in the opening angle of the sealing valve plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The solution of the present invention realizes the rotational support of the first valve plate rotating shaft and the second valve plate rotating shaft by arranging a bidirectional bearing group including an axial thrust bearing and a radial support bearing on the left and right sides of the main valve body. Compared with the solution of using a single radial bearing structure in traditional butterfly valves, while providing the same radial rotation support for the valve plate rotating shaft, it can also provide sufficient axial load support for the valve plate rotating shaft. This structure can effectively reduce the left and right movement, interference, wear and other problems of the sealing valve plate after long-term use.

[0021] 2. A valve plate automatic driving mechanism and a valve plate manual adjustment mechanism are respectively arranged on both sides of the main valve body. The valve plate automatic driving mechanism drives the first valve plate shaft to rotate through a mechanism such as an angular stroke actuator to realize the set angle adjustment of the sealing valve plate and the limitation after rotating to the set angle. The valve plate manual adjustment mechanism is inserted into different valve plate angle positioning holes through the hemispherical contact head of the valve plate angle positioning block, so that the second valve plate shaft can be limited after being driven to different set angles. In this way, after the predetermined angle adjustment, double limitation on both sides of the sealing valve plate can be achieved, so that the sealing valve plate is fully limited during operation and is not prone to deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a bidirectionally supported electric butterfly valve mentioned in the present invention;

[0023] Figure 2 for Figure 1 A structural front view of a bidirectionally supported electric butterfly valve mentioned in;

[0024] Figure 3 for Figure 2 A structural cross-sectional view of a bidirectionally supported electric butterfly valve in the AA direction;

[0025] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0026] Figure 5 It is a structural schematic diagram of the main valve body mentioned in the present invention;

[0027] Figure 6 Schematic diagram of the structure of the sealing valve plate mentioned in the present invention;

[0028] Figure 7 It is a structural schematic diagram of the valve plate manual adjustment mechanism mentioned in the present invention.

[0029] In the picture:

[0030] 100, main valve body, 110, valve plate mounting cavity, 120, valve plate sealing strip, 130, flange mounting plate, 140, valve body connecting sealing ring;

[0031] 200, sealing valve plate, 210, first valve plate rotating shaft, 220, second valve plate rotating shaft, 230, spoiler;

[0032] 300, bidirectional bearing set, 310, axial thrust bearing, 320, thrust washer, 330, radial support bearing, 340, bearing set end cover;

[0033] 400, valve plate automatic driving mechanism, 410, angular stroke actuator, 420, actuator bracket;

[0034] 500, valve plate manual adjustment mechanism, 510, manual adjustment wheel, 520, angle positioning bracket, 521, valve plate angle positioning hole, 530, valve plate angle positioning block. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0036] For example, see the attached Figure 1 ~Attached Figure 3 The present invention provides a two-way supported electric butterfly valve, including a main valve body 100, as shown in the attached Figure 5As shown, the main valve body 100 includes a straight tube-shaped valve plate mounting cavity 110, and flange mounting plates 130 are provided at the ports on both sides of the valve plate mounting cavity 110. The flange mounting plates 130 are provided with valve body connection sealing rings 140. The flange mounting plates 130 are used to connect the valve to the pipeline. A sealing valve plate 200 is provided in the valve plate mounting cavity 110. At the same time, two valve plate sealing strips 120 are provided on the inner side wall of the valve plate mounting cavity 110. The sealing valve plate 200 can abut against the two valve plate sealing strips 120 by rotation. The valve plate sealing strips 120 can improve the sealing performance of the valve in the closed state. The valve plate automatic driving mechanism 400 and the valve plate manual adjustment mechanism 500 are respectively provided on the left and right sides of the main valve body 100. Specifically:

[0037] The left and right sides of the main valve body 100 are respectively provided with a bidirectional bearing group 300, which is respectively referred to as the first bidirectional bearing group 300 and the second bidirectional bearing group 300, and the valve plate automatic drive mechanism 400 is provided on the side of the first bidirectional bearing group 300 away from the main valve body 100, and the valve plate manual adjustment mechanism 500 is provided on the side of the second bidirectional bearing group 300 away from the main valve body 100, as shown in the attached figure. Figure 4 As shown, the bidirectional bearing group 300 includes a bearing mounting cavity, in which an axial thrust bearing 310, a thrust washer 320, and a radial support bearing 330 are sequentially abutted. A bearing group end cover 340 is fixedly mounted at the end of the bearing mounting cavity, and the bearing group end cover 340 abuts against the outer ring of the radial support bearing 330. In actual installation, the seat ring of the axial thrust bearing 310 abuts against the bottom of the bearing mounting cavity, the outer ring of the radial support bearing 330 abuts against the inner side wall of the bearing mounting cavity, and the left and right sides of the thrust washer 320 abut against the shaft ring of the axial thrust bearing 310 and the inner ring of the radial support bearing 330, respectively. Under this structure, the radial support bearing 330 and the axial thrust bearing 310 are fixed in the bearing mounting cavity.

[0038] And as attached Figure 6As shown, the left and right sides of the sealing valve plate 200 are respectively fixedly connected with the first valve plate rotating shaft 210 and the second valve plate rotating shaft 220. The first valve plate rotating shaft 210 passes through the side of the main valve body 100 and the first bidirectional bearing group 300 in sequence and is connected to the valve plate automatic drive mechanism 400. The axial thrust bearing 310 and the radial support bearing 330 of the first bidirectional bearing group 300 are installed on the first valve plate rotating shaft 210 to provide axial support and radial rotation support for the first valve plate rotating shaft 210. The valve plate automatic drive mechanism 400 includes an angular stroke actuator 410 and an actuator bracket 420. The actuator bracket 420 is fixedly connected to the main valve body 100, and the angular stroke actuator 410 is a prior art. The angular stroke actuator 410 is drivingly connected to the end of the first valve plate shaft 210 to drive the first valve plate shaft 210 to rotate; the second valve plate shaft 220 passes through the side of the main valve body 100 and the second bidirectional bearing group 300 in sequence and is connected to the valve plate manual adjustment mechanism 500. The axial thrust bearing 310 and the radial support bearing 330 of the second bidirectional bearing group 300 are installed on the second valve plate shaft 220 to provide axial support and radial rotation support for the second valve plate shaft 220, as shown in the attached figure. Figure 7 As shown, the valve plate manual adjustment mechanism 500 includes a manual adjustment wheel 510 and an angle positioning bracket 520. The manual adjustment wheel 510 is fixedly connected to the end of the second valve plate rotating shaft 220. The angle positioning bracket 520 is fixedly connected to the main valve body 100. The angle positioning bracket 520 is provided with a plurality of valve plate angle positioning holes 521. To match, the manual adjustment wheel 510 is provided with a valve plate angle positioning block 530 that matches the valve plate angle positioning hole 521. The end of the valve plate angle positioning block 530 faces the valve plate angle positioning hole 521. The hemispherical contact head is made of elastic material and can be inserted into different valve plate angle positioning holes 521 by rotating the manual adjustment wheel 510. Combined with the fixed connection between the manual adjustment wheel 510 and the end of the second valve plate shaft 220, when the sealing valve plate 200 is rotated to multiple set angles, the hemispherical contact head is inserted into the corresponding valve plate angle positioning hole 521, which increases the limit of the non-driving side of the sealing valve plate 200 and improves the stability of the sealing valve plate 200 when working at multiple preset angles.

[0039] In some of these embodiments, as shown in the attached Figure 6 As shown, the sealing valve plate 200 is provided with several spoiler strips 230 in parallel. The spoiler strips 230 can reduce the eddies and turbulence generated when the fluid medium flows through the sealing valve plate 200, thereby reducing the flow resistance and pressure loss, while dispersing the fluid impact, avoiding local high pressure or vibration of the sealing valve plate 200, and improving the operation stability.

[0040] The method of using the bidirectionally supported electric butterfly valve in this embodiment is as follows:

[0041] The double-support butterfly valve mentioned in this embodiment can be installed on a specified fluid pipeline through the flange mounting plates 130 at the ports on both sides of the valve plate mounting cavity 110, and then the gap between the sealing valve plate 200 and the valve plate mounting cavity 110 can be changed by changing the angle of the sealing valve plate 200 in the valve plate mounting cavity 110, thereby controlling the flow of the fluid medium in the fluid pipeline. The angle control of the sealing valve plate 200 is achieved by the angular stroke actuator 410 of the valve plate automatic driving mechanism 400 driving the first valve plate rotating shaft 210 to rotate. The angular stroke actuator 410 can control the first valve plate rotating shaft 210 to rotate to multiple preset angles. At the same time, after rotating to the preset angle, the angular stroke actuator 410 can also brake so that the first valve plate rotating shaft 210 remains at the preset angle. At the same time, the valve plate manual adjustment mechanism 500 on the other side of the main valve body 100 can achieve the first valve plate rotating shaft 210 by cooperating with a plurality of valve plate angle positioning holes 521 and the valve plate angle positioning block 530. The braking of the second valve plate shaft 220 is specifically implemented in that when the angular stroke actuator 410 is able to control the first valve plate shaft 210 to rotate to a preset angle, the hemispherical contact head of the valve plate angle positioning block 530 will just be stuck in one of the valve plate angle positioning holes 521, and different valve plate angle positioning holes 521 correspond to different preset angles. In this case, the angle of the sealing valve plate 200 can be kept more stable when the fluid medium passes through, and it is not easy to rotate and deviate, thereby improving the accuracy of the valve flow control. When the angular stroke actuator 410 of the valve plate automatic drive mechanism 400 fails, the sealing valve plate 200 can be temporarily controlled to work by manually or other driving methods to drive the manual adjustment wheel 510 to rotate. At this time, the cooperation between the valve plate angle positioning block 530 and different valve plate angle positioning holes 521 can also be used as an identification of the opening angles of different sealing valve plates 200, prompting the operator of the current working status of the sealing valve plate 200.

[0042] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0043] The above are merely preferred embodiments of the present invention. Anyone skilled in the art may utilize the above-described technical solutions to modify the present invention or modify them into equivalent technical solutions. Therefore, any simple modification or equivalent replacement based on the technical solutions of the present invention falls within the scope of protection claimed by the present invention.

Claims

1. A two-way supported electric butterfly valve, characterized in that: include: A main valve body (100), wherein two bidirectional bearing groups (300) are respectively provided on the left and right sides of the main valve body (100), respectively referred to as a first bidirectional bearing group (300) and a second bidirectional bearing group (300), wherein the bidirectional bearing group (300) comprises a bearing mounting cavity, wherein an axial thrust bearing (310), a thrust washer (320) and a radial support bearing (330) are sequentially abutted against each other in the bearing mounting cavity, and a bearing group end cover (340) is fixedly installed at the end of the bearing mounting cavity, and the bearing group end cover (340) abuts against the bearing outer ring of the radial support bearing (330); A valve plate automatic driving mechanism (400), the valve plate automatic driving mechanism (400) being arranged on a side of the first bidirectional bearing group (300) away from the main valve body (100); A sealing valve plate (200) is provided in the main valve body (100), and a first valve plate rotating shaft (210) and a second valve plate rotating shaft (220) are fixedly connected to the left and right sides of the sealing valve plate (200), respectively. The first valve plate rotating shaft (210) passes through the side of the main valve body (100) and the first bidirectional bearing group (300) in sequence and is then driven and connected to the valve plate automatic driving mechanism (400). The axial thrust bearing (310) and the radial support bearing (330) of the first bidirectional bearing group (300) are mounted on the first valve plate rotating shaft (210). The second valve plate rotating shaft (220) passes through the side of the main valve body (100) and the second bidirectional bearing group (300) in sequence. The axial thrust bearing (310) and the radial support bearing (330) of the second bidirectional bearing group (300) are mounted on the second valve plate rotating shaft (220).

2. The bidirectionally supported electric butterfly valve according to claim 1, characterized in that: The valve plate automatic driving mechanism (400) comprises an angular stroke actuator (410) and an actuator bracket (420), wherein the actuator bracket (420) is fixedly connected to the main valve body (100), and the angular stroke actuator (410) is drivingly connected to the end of the first valve plate rotating shaft (210) for driving the first valve plate rotating shaft (210) to rotate.

3. The bidirectionally supported electric butterfly valve according to claim 2, characterized in that: The valve plate manual adjustment mechanism (500) is also included. The valve plate manual adjustment mechanism (500) is arranged on a side of the second bidirectional bearing group (300) away from the main valve body (100). The valve plate manual adjustment mechanism (500) includes a manual adjustment wheel (510). The manual adjustment wheel (510) is fixedly connected to the end of the second valve plate rotating shaft (220).

4. The bidirectionally supported electric butterfly valve according to claim 3, characterized in that: The valve plate manual adjustment mechanism (500) further comprises an angle positioning bracket (520), wherein the angle positioning bracket (520) is fixedly connected to the main valve body (100), the angle positioning bracket (520) is provided with a plurality of valve plate angle positioning holes (521), and the manual adjustment wheel (510) is provided with a valve plate angle positioning block (530) adapted to the valve plate angle positioning holes (521).

5. The bidirectionally supported electric butterfly valve according to claim 4, characterized in that: The end portion of the valve plate angle positioning block (530) facing the valve plate angle positioning hole (521) is a hemispherical contact head made of elastic material, and the hemispherical contact head can be engaged into different valve plate angle positioning holes (521) by rotating the manual adjustment wheel (510).

6. The bidirectionally supported electric butterfly valve according to claim 5, characterized in that: The sealing valve plate (200) is provided with a plurality of spoiler strips (230) in parallel.

7. The bidirectionally supported electric butterfly valve according to claim 6, characterized in that: The main valve body (100) comprises a straight tube-shaped valve plate installation cavity (110), and two valve plate sealing strips (120) are provided on the inner side wall of the valve plate installation cavity (110). The sealing valve plate (200) can abut against the two valve plate sealing strips (120) by rotating.

8. The bidirectionally supported electric butterfly valve according to claim 7, characterized in that: Flange mounting plates (130) are provided at ports on both sides of the valve plate mounting cavity (110), and the flange mounting plates (130) are provided with valve body connection sealing rings (140).

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