Butterfly valve capable of multi-angle operation

Abstract

The application discloses a butterfly valve capable of multi-angle operation and relates to the technical field of valves.The butterfly valve comprises an electric actuator which is connected with an external controller signal and is used for controlling the opening and closing of the valve;the butterfly valve further comprises a valve seat which is installed at the bottom of the electric actuator and is used for fixing internal components of the valve;the butterfly valve further comprises a valve plate assembly which is located in the valve seat and is used for controlling the opening and closing of a medium passage in the valve seat;the butterfly valve further comprises a valve rod assembly which is connected with the valve plate assembly;when the butterfly valve is closed, the electric actuator drives the valve rod body to rotate, the valve rod body interacts with the inclined surface of a guide block through the inclined surface of a guide groove at the bottom of the valve rod body, the guide block is rotated, two misaligned valve plate bodies are driven to rotate, the edge of the valve plate closely abuts against the arc-shaped stopper in the valve seat, and primary sealing is realized.Because gaps are designed between the two ends of the valve plate and the inner wall of the valve seat, the friction between the valve plate and the inner wall of the valve seat is effectively reduced, and the service life of the valve plate is significantly prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a butterfly valve capable of multi-angle operation. BACKGROUND

[0002] In a fluid control system, the main function of a butterfly valve is to open and close the medium passage by controlling the rotation of the valve plate, thereby adjusting the flow and pressure of the fluid.

[0003] However, the existing butterfly valve technology still has some shortcomings in practical application. When the traditional butterfly valve is closed, the sealing between the valve plate and the inner wall of the valve seat mainly relies on the close fit between the valve plate and the inner wall of the valve seat.

[0004] Although this sealing method can meet the basic sealing requirements to some extent, in actual use, there is a large frictional force between the valve plate and the inner wall of the valve seat. This friction not only causes wear of the valve plate, reducing the service life of the valve plate, but also can affect the sealing performance of the valve.

[0005] In addition, due to the limited contact area between the valve plate and the inner wall of the valve seat, the sealing effect is often not ideal. In some application scenarios with high sealing performance requirements, the traditional butterfly valve may not meet the strict sealing requirements.

[0006] Therefore, the present application aims to provide a butterfly valve capable of multi-angle operation, which effectively reduces the friction between the valve plate and the inner wall of the valve seat, improves the sealing performance and service life of the valve through innovative structural design and optimized sealing mechanism. SUMMARY

[0007] In view of the shortcomings of the prior art, the present application provides a butterfly valve capable of multi-angle operation, which solves the problem of large wear and limited sealing surface of the existing valve in use in the background art.

[0008] To achieve the above purpose, the present application is implemented by the following technical scheme: a butterfly valve capable of multi-angle operation, comprising:

[0009] An electric actuator connected to an external controller signal for controlling the opening and closing of the valve;

[0010] Further comprising:

[0011] A valve seat installed at the bottom of the electric actuator for fixing the internal components of the valve;

[0012] A valve plate assembly located inside the valve seat for controlling the opening and closing of the medium passage inside the valve seat;

[0013] A valve stem assembly connected to the inside of the valve plate assembly to drive the valve plate assembly to open and close by cooperating with the electric actuator switch;

[0014] An adjusting assembly is installed at the bottom of the valve seat for adjusting the valve rod assembly;

[0015] A connecting assembly is installed at both ends of the valve seat assembly for connecting with external pipelines.

[0016] Preferably, the valve seat comprises a valve body, a medium flow channel is arranged inside the valve body, arc-shaped stoppers are arranged on both sides of the inner wall of the valve body, the arc-shaped stoppers are of an integral structure with the valve body, two arc-shaped stoppers are distributed in a staggered manner, the valve plate body can be tightly attached to the arc-shaped stoppers when the valve is closed, thereby achieving preliminary sealing. Since the arc-shaped stoppers are of an integral structure with the valve body, the structural stability of the whole is enhanced, and it is ensured that the sealing effect will not be affected by part loosening during long-term use. Meanwhile, the staggered distribution of the two arc-shaped stoppers provides more stable support and limiting effect for the valve plate body, so that the valve plate body can be more accurately attached to the arc-shaped stoppers during rotation, further improving the sealing performance and reliability of the valve and effectively preventing medium leakage.

[0017] Preferably, the valve plate assembly comprises two valve plate bodies, a fixed block is installed on the surface of each valve plate body through a bolt, a valve rod groove is opened on the surface of the valve plate body, an elastic block is installed inside the valve rod groove, the elastic block is an arc-shaped elastic metal, and the top of the fixed block is of a slope structure; when the valve is closed, the two elastic pieces will be extruded, and when the valve plate body is opened, the two valve plate bodies can be reset with the help of the elasticity of the elastic pieces.

[0018] Preferably, the two valve plate bodies are distributed in a staggered manner, a sliding groove is arranged on the surface of the valve plate body, a sliding block is arranged inside the sliding groove, one end of the sliding block is connected with the other valve plate body through a fixed bolt, the two valve plates slide and contact each other and are tightly attached, a convex limiting structure is arranged at one end of the sliding block, and the convex structure at one end of the sliding block is matched with the groove on the surface of the valve plate body; so that the valve plate body can be better attached to the arc-shaped stoppers in the valve seat when it is closed, the sealing area is increased, the possibility of medium leakage is reduced, and it is also helpful to disperse the pressure of the medium on the valve plate and reduce the wear of the valve plate. The surface of the valve plate body is provided with a sliding groove, a sliding block is arranged inside the sliding groove, and one end of the sliding block is connected with the other valve plate body through a fixed bolt, so that the two valve plate bodies can slide and contact each other and be tightly attached.

[0019] Preferably, the valve stem assembly comprises a rotating block, the rotating block is distributed with protruding structures in staggered form on both sides, the bottom of the protruding structures on both sides of the rotating block is in slope form, the top of the rotating block is provided with a limiting block and a guide block, the top surface of the rotating block is closely attached to the bottom of the valve stem body, one end of the top of the valve stem body is connected with the electric actuator, the bottom of the valve stem body is provided with a guide groove and a limiting groove, the bottom of the rotating block is provided with a metal washer and a rubber washer, and the bottom slope of the protruding structure on both sides of the rotating block is attached to the top slope of the fixed block; the design of the valve stem assembly realizes efficient sealing and low friction operation of the valve through the cooperation of the rotating block and the valve stem body. The protruding structures on both sides of the rotating block are distributed in staggered form, and the bottom is in slope form. This design enables the rotating block to be closely attached to the slope on the top of the fixed block, so that when the valve stem body rotates, the slope interacts to push the valve plate body to rotate and position accurately, realizing the opening and closing operation of the valve. At the same time, the limiting block and the guide block provided on the top of the rotating block cooperate with the guide groove and the limiting groove on the bottom of the valve stem body, further ensuring the stability and accuracy of the valve stem assembly during movement, preventing the valve stem from deviating or being stuck during rotation, and improving the operation reliability of the valve.

[0020] Preferably, the guide block is provided with two, one end of the top of the two guide blocks is in slope form, the guide block is closely attached to the surface of the valve plate body, the guide block is matched with the shape of the guide groove, the top of the guide groove is in slope form, the limiting block is provided with two, and the limiting block is in sliding contact with the surface of the limiting groove; the top of the guide groove is in slope form, and the slope design cooperates with the slope of the guide block, further optimizing the movement characteristics of the valve stem assembly. When the valve stem body rotates, the slope of the guide groove can guide the corresponding movement of the guide block, so that the valve plate body can be more smoothly attached to the arc-shaped stopper in the valve seat, realizing reliable sealing.

[0021] Preferably, the adjusting assembly comprises a base, the base is located at the bottom of the valve seat, the inside of the base is provided with a hole groove, and an adjusting bolt is inserted into the hole groove, the adjusting bolt is provided with four, the four adjusting bolts are threadedly connected with the bottom of the valve seat, the inside of the base is fixedly connected with a top rod, one end of the top of the top rod is inserted into the inside of the rotating block, and a sealing ring is arranged on the contact surface between the top rod and the valve body. By rotating the adjusting bolt, the base can drive the top rod to move upwards, the annular protruding structure on the outer wall of the top rod can extrude the gasket, and the tightness of the gasket can be adjusted.

[0022] Preferably, the connecting assembly comprises a first flange, a clamping groove is formed in the first flange, the clamping groove is connected with a second flange, the second flange is fixedly connected with a valve seat, a sealing ring is arranged on the contact surface of the first flange and the second flange, the outer portion of the second flange is threadedly connected with a clamping bolt, one end of the clamping bolt abuts against the outer wall surface of the first flange, the clamping bolt can be connected with each other and can rotate through the clamping groove, and the angle of the valve can be adjusted, so that multi-angle operation can be realized, and the valve can be fixed by tightening the clamping bolt.

[0023] The application provides a butterfly valve capable of multi-angle operation.

[0024] When the butterfly valve is closed, the electric actuator drives the valve rod body to rotate, the valve rod body interacts with the inclined surface of the guide block through the inclined surface of the bottom guide groove, the guide block is rotated, and then the two misaligned valve plate bodies are driven to rotate, so that the valve plate edges are tightly attached to the arc-shaped stoppers in the valve seat, and primary sealing is realized. Since the gap is designed between the two ends of the valve plate and the inner wall of the valve seat, the friction between the valve plate and the inner wall of the valve seat is effectively reduced, and the service life of the valve plate is significantly prolonged. After the valve plate body is attached to the arc-shaped stopper, the valve plate body stops rotating under the limiting action of the arc-shaped stopper. At this time, the valve rod body continues to rotate, the inclined surface of the bottom guide groove forces the inclined surface of the rotating block to move downward, the rotating block extrudes the rubber gasket in the downward movement process, and the two fixed blocks are driven to move in opposite directions through the bottom inclined surfaces of the protruding structures on the two sides of the rotating block, the fixed blocks drive the valve plate body to move in the opposite directions, one end of the valve plate body is extruded towards the inner wall of the valve seat, further sealing is realized, and the sealing performance of the valve is significantly improved. With the continuous rotation of the valve rod body, when the bottom of the guide groove contacts the top of the guide block, the limiting groove contacts the side wall of the limiting block, the valve rod body continues to rotate, drives the limiting block and the rotating block to rotate again through the limiting groove, and further pushes the two valve plate bodies to tightly attach to the arc-shaped stopper, so that a deeper sealing effect is realized. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the application;

[0026] Figure 2 It is a schematic diagram of the valve opening state of the application;

[0027] Figure 3 It is a schematic diagram of the side view structure of the application;

[0028] Figure 4 It is a schematic diagram of the valve rod body structure of the application;

[0029] Figure 5 It is a schematic diagram of the top rod structure of the application;

[0030] Figure 6 For the application Figure 5 Amplification structure schematic diagram at A in the application

[0031] Figure 7 For the application valve plate structure schematic diagram

[0032] Figure 8 For the application fixed block structure schematic diagram

[0033] Figure 9 For the application elastic block structure schematic diagram

[0034] Figure 10 For the application first flange cross section structure schematic diagram

[0035] In the figure, 1, valve seat; 101, valve body; 102, arc-shaped stop block; 2, valve plate assembly; 201, elastic block; 202, valve plate body; 203, fixed block; 204, sliding groove; 205, sliding block; 206, fixed bolt; 207, valve rod groove; 3, valve rod assembly; 301, rotating block; 302, limiting block; 303, guide block; 304, valve rod body; 305, limiting groove; 306, guide groove; 307, metal washer; 308, rubber washer; 4, electric actuator; 5, adjusting assembly; 501, base; 502, adjusting bolt; 503, top rod; 6, connecting assembly; 601, first flange; 602, second flange; 603, clamping groove; 604, locking bolt. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application. Embodiment 1

[0037] Please refer to Figures 1-10 The embodiment of the application provides a technical solution: a butterfly valve capable of multi-angle operation, comprising: an electric actuator 4 connected with an external controller signal, used for controlling the opening and closing of the valve; further comprising: a valve seat 1 installed at the bottom of the electric actuator 4, used for fixing the internal components of the valve; a valve plate assembly 2 located inside the valve seat 1, used for controlling the opening and closing of the medium passage inside the valve seat 1; a valve rod assembly 3 connected with the inside of the valve plate assembly 2, driven to drive the opening and closing of the valve plate assembly 2 through cooperation with the opening and closing of the electric actuator 4; an adjusting assembly 5 installed at the bottom of the valve seat 1, used for adjusting the valve rod assembly 3; and a connecting assembly 6 installed at both ends of the valve seat 1 assembly, used for connecting with the external pipeline.

[0038] The butterfly valve capable of multi-angle operation of the embodiment can realize efficient sealing and low-friction operation of the valve through the cooperation of the valve plate assembly 2 and the valve rod assembly 3. The valve plate assembly 2 can accurately control the opening and closing of the medium passage under the drive of the valve rod assembly 3. When the valve is closed, the valve plate assembly 2 can be tightly attached to the inner wall of the valve seat 1, and the sealing effect between the valve plate and the valve seat 1 is further optimized through fine adjustment of the valve rod assembly 3. This design not only effectively reduces the friction between the valve plate and the inner wall of the valve seat 1, but also reduces the wear of the valve plate and prolongs the service life. Implementation:2:

[0039] Please refer to Figures 1-10 , the embodiment of the present application provides a technical scheme: the valve seat 1 comprises a valve body 101, the valve body 101 is internally provided with a medium flow passage, the inner wall of the valve body 101 is provided with arc-shaped stop blocks 102 on both sides, the arc-shaped stop blocks 102 are of one-piece structure with the valve body 101, the arc-shaped stop blocks 102 are provided with two, and the two arc-shaped stop blocks 102 are distributed in a staggered manner; the valve plate assembly 2 comprises a valve plate body 202, the valve plate body 202 is provided with two, the surface of the valve plate body 202 is provided with a fixed block 203 through a bolt, the surface of the valve plate body 202 is provided with a valve rod groove 207, the valve rod groove 207 is internally provided with an elastic block 201, the elastic block 201 is an arc-shaped elastic metal, and the top of the fixed block 203 is of a slope surface structure; the two valve plate bodies 202 are distributed in a staggered manner, the surface of the valve plate body 202 is provided with a sliding groove 204, the sliding groove 204 is internally provided with a sliding block 205, one end of the sliding block 205 is connected with the other valve plate body 202 through a fixing bolt 206, the two valve plates are in sliding contact and tightly attached to each other, one end of the sliding block 205 is provided with a protruding limiting structure, and the protruding structure at one end of the sliding block 205 is matched with the groove on the surface of the valve plate body 202; the valve rod assembly 3 comprises a rotating block 301, the rotating block 301 is provided with protruding structures on both sides in a staggered manner, the bottom of the protruding structures on both sides of the rotating block 301 is of a slope surface, the top of the rotating block 301 is provided with a limiting block 302 and a guide block 303, the top surface of the rotating block 301 is tightly attached to the bottom of a valve rod body 304, one end of the top of the valve rod body 304 is connected with an electric actuator 4, the bottom of the valve rod body 304 is provided with a guide groove 306 and a limiting groove 305, the bottom of the rotating block 301 is provided with a metal gasket 307 and a rubber gasket 308, and the bottom slope surface of the protruding structures on both sides of the rotating block 301 is attached to the top slope surface of the fixed block 203; the guide block 303 is provided with two, one end of the top of the two guide blocks 303 is of a slope surface, the guide block 303 is tightly attached to the surface of the valve plate body 202, the guide block 303 is matched with the guide groove 306 in shape, the top of the guide groove 306 is of a slope surface, and the limiting block 302 is provided with two, the two limiting blocks 302 are in sliding contact with the surface of the limiting groove 305;

[0040] When the valve is closed in use, the valve rod body 304 is driven to rotate by the electric actuator 4, the valve rod body 304 can push the inclined surface of the guide block 303 through the inclined surface of the bottom guide groove 306, force the guide block 303 to rotate, and then make the guide block 303 drive the two valve plate bodies 202 to rotate, and then make the two misaligned valve plate edges abut with the arc-shaped stop block 102, so as to realize sealing, because the gap is reserved between the two ends of the baffle and the inner wall of the valve body 101, compared with the traditional butterfly valve, the friction between the two sides of the valve plate and the inner wall of the valve seat 1 is greatly reduced, and the service life of the valve plate is greatly prolonged.

[0041] When the valve plate body 202 abuts with the arc-shaped stop block 102, the rotation is limited by the limiting action of the arc-shaped stop block 102 and cannot continue, when the valve rod body 304 continues to rotate, the inclined surface of the rotating block 301 is forced to move downward through the inclined surface of the bottom guide groove 306, and then the rotating block 301 can extrude the rubber gasket downward, and at the same time, the rotating block 301 moves downward, and can force the two fixed blocks 203 to move in opposite directions through the bottom inclined surface of the protruding structure on the two sides of the rotating block 301, and then the two fixed blocks 203 can drive the two valve plate bodies 202 to move in opposite directions, so that one end of the valve plate body 202 can extrude the inner wall of the valve seat 1, thereby realizing further sealing and greatly improving the sealing performance of the valve.

[0042] With the rotation of the valve rod body 304, when the bottom end of the guide groove 306 contacts the top end of the guide block 303, the limiting groove 305 contacts the side wall of the limiting block 302, and then with the continuous rotation of the valve rod body 304, the limiting block 302 and the rotating block 301 are driven to rotate again through the limiting groove 305, and then the two valve plate bodies are further abutted with the arc-shaped stop block 102, and the sealing effect is further improved. Embodiment 3:

[0043] Please refer to Figures 1-10 The adjusting assembly 5 comprises a base 501, the base 501 is located at the bottom of the valve seat 1, a hole groove is arranged in the base 501, and an adjusting bolt 502 is inserted in the hole groove, the adjusting bolt 502 is provided with four, the four adjusting bolts 502 are in threaded connection with the bottom of the valve seat 1, a top rod 503 is fixedly connected in the base 501, and one end of the top rod 503 is inserted into the rotating block 301; The connecting assembly 6 comprises a first flange 601, a clamping groove 603 is formed in the first flange 601, the clamping groove 603 is in clamping connection with a second flange 602, the second flange 602 is fixedly connected with the valve seat 1, a sealing ring is arranged on the contact surface of the first flange 601 and the second flange 602, the second flange 602 is in threaded connection with a tight bolt 604, and one end of the tight bolt 604 abuts against the outer wall surface of the first flange 601.

[0044] The embodiment can drive the top rod 503 to move upward by rotating the adjusting bolt 502, the annular protruding structure on the outer wall of the top rod 503 can extrude the gasket, thereby facilitating the adjustment of the tightness of the gasket, the first flange 601 and the second flange 602 are arranged at both ends of the valve seat 1, the first flange 601 and the second flange 602 are connected and can rotate through the clamping groove 603, thereby adjusting the angle of the valve, so that multi-angle operation can be realized, the retaining bolt 604 is tightened, one end of the retaining bolt 604 can abut against the outer wall surface of the first flange 601, and the valve can be fixed.

[0045] The basic principles and main features of the present application and the advantages of the present application are shown and described above, and it is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in any respect, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A butterfly valve capable of multi-angle operation, comprising: an electric actuator (4) connected with an external controller signal for controlling the opening and closing of the valve; characterized in that it further comprises: a valve seat (1) installed at the bottom of the electric actuator (4) for fixing the internal components of the valve; a valve plate assembly (2) located inside the valve seat (1) for controlling the opening and closing of the medium passage inside the valve seat (1); a valve stem assembly (3) connected with the inside of the valve plate assembly (2) and driven by the switch of the electric actuator (4) to drive the switch of the valve plate assembly (2); an adjusting assembly (5) installed at the bottom of the valve seat (1) for adjusting the valve stem assembly (3); a connecting assembly (6) installed at both ends of the valve seat (1) for connecting with external pipelines; the valve seat (1) comprises a valve body (101), the inside of which is provided with a medium flow passage, the inner wall of the valve body (101) is provided with arc-shaped stop blocks (102) on both sides, the arc-shaped stop blocks (102) are of an integral structure with the valve body (101), and two arc-shaped stop blocks (102) are distributed in a staggered manner. the valve plate assembly (2) comprises two valve plate bodies (202), the surfaces of the two valve plate bodies (202) are both provided with fixed blocks (203) installed through bolts, the surface of each valve plate body (202) is provided with a valve stem groove (207), the inside of the valve stem groove (207) is provided with an elastic block (201), the elastic block (201) is an arc-shaped elastic metal, and the top of each fixed block (203) is of a slope surface structure. two valve plate bodies (202) are distributed in a staggered manner, the surface of each valve plate body (202) is provided with a sliding groove (204), the inside of the sliding groove (204) is provided with a sliding block (205), one end of the sliding block (205) is connected with the other valve plate body (202) through a fixed bolt (206), the two valve plates are in sliding contact and closely fit with each other, one end of the sliding block (205) is provided with a protruding limiting structure, and the protruding structure at one end of the sliding block (205) is matched with the groove on the surface of the valve plate body (202).

2. The multi-angle butterfly valve according to claim 1, wherein: the valve stem assembly (3) comprises a rotating block (301), the two sides of the rotating block (301) are provided with protruding structures in a staggered manner, the bottom of the protruding structures on both sides of the rotating block (301) is of a slope surface, the top of the rotating block (301) is provided with a limiting block (302) and a guide block (303), the surface of the top of the rotating block (301) is closely fitted with the bottom of a valve stem body (304), one end of the top of the valve stem body (304) is connected with the electric actuator (4), the bottom of the valve stem body (304) is provided with a guide groove (306) and a limiting groove (305), the bottom of the rotating block (301) is provided with a metal gasket (307) and a rubber gasket (308), and the slope surfaces at the bottom of the protruding structures on both sides of the rotating block (301) are fitted with the slope surfaces at the top of the fixed blocks (203).

3. The multi-angle butterfly valve according to claim 2, wherein: The guide block (303) is provided with two, and one end of the top of the two guide blocks (303) is beveled, the guide block (303) is matched with the shape of the guide groove (306), the top of the guide groove (306) is beveled, the limiting block (302) is provided with two, and the two limiting blocks (302) are in sliding contact with the surface of the limiting groove (305).

4. The multi-angle butterfly valve according to claim 3, wherein: The adjusting assembly (5) comprises a base (501), the base (501) is located at the bottom of the valve seat (1), a hole groove is arranged in the base (501), and an adjusting bolt (502) is inserted into the hole groove, the adjusting bolt (502) is provided with four, the four adjusting bolts (502) are in threaded connection with the bottom of the valve seat (1), and a top rod (503) is fixedly connected to the inside of the base (501), and one end of the top rod (503) is inserted into the inside of the rotating block (301).

5. The multi-angle butterfly valve according to claim 4, wherein: The connecting assembly (6) comprises a first flange (601), a clamping groove (603) is formed in the first flange (601), the clamping groove (603) is in clamping connection with a second flange (602), the second flange (602) is fixedly connected with the valve seat (1), a sealing ring is arranged on the contact surface of the first flange (601) and the second flange (602), the second flange (602) is in threaded connection with a clamping bolt (604) outside, and one end of the clamping bolt (604) abuts against the outer wall surface of the first flange (601).

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