Divided-flow type butterfly valve

Abstract

A flow dividing type butterfly valve comprises a valve body, a butterfly valve block and a valve shaft, a main path conveying channel is arranged on the valve body, the butterfly valve block is arranged in the main path conveying channel in a turnover mode through the valve shaft, and a first flow dividing hole is formed in the front face of the butterfly valve block; the valve shaft is provided with a first flow dividing channel communicating with the first flow dividing hole. A first external pipe is arranged on the valve body, and when the butterfly valve block plugs the main path conveying channel through the front face, the first external pipe is communicated with the first flow dividing channel, so that a plugged area is divided outwards through the first external pipe. The split-flow type butterfly valve has the advantages that the split-flow channels are additionally arranged on the butterfly valve plate, opening and closing of the split-flow channels are controlled through overturning of the butterfly valve plate, valves do not need to be additionally arranged on split-flow branches, and cost and difficulty of valve maintenance and automatic control are reduced; the outer connector on the periphery of the valve shaft is communicated with an external pipe in an aligned mode or closed in a staggered mode through rotation, the structure is simple, and control is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and particularly relates to a shunt type butterfly valve. Background Art

[0002] The working principle of a butterfly valve is to realize the function of opening and closing a fluid passage by rotating a disc-shaped valve flap around a valve shaft. It has the advantages of quick opening and closing, good sealing performance, small volume, light weight, etc., and can control the flow of various types of fluids such as air, water, steam, corrosive media, mud, oil products, and radioactive media, and is widely used in industrial impurity removal systems.

[0003] However, currently, a self-cleaning pipeline and a maintenance pipeline are generally installed on an industrial impurity removal system. The traditional butterfly valve cannot directly perform controllable shunting, and valves need to be added to the self-cleaning pipeline and the maintenance pipeline for control. The added valves increase the connection ports on the impurity removal system, increasing the risk of air leakage and the later maintenance cost, and also increasing the cost and difficulty of automatic control of the valves.

[0004] Therefore, in view of the deficiencies of the existing technology, it is necessary to design a shunt type butterfly valve to solve the above problems.

[0005] It should be noted that the above introduction of the technical background is only for the convenience of clearly and completely explaining the technical solution of the present utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above content is well-known to those skilled in the art just because these contents are described in the background art of the present utility model. Summary of the Utility Model

[0006] To overcome the above deficiencies in the prior art, the purpose of the present utility model is to disclose a shunt type butterfly valve for solving the problem that the traditional butterfly valve cannot perform controllable shunting.

[0007] The present utility model discloses a shunt type butterfly valve, which includes a valve body, a butterfly valve flap, and a valve shaft. A main road conveying channel is provided on the valve body, and the butterfly valve flap is rotatably arranged in the main road conveying channel through the valve shaft, wherein:

[0008] A first shunt hole is provided on the front surface of the butterfly valve flap;

[0009] A first shunt channel communicated with the first shunt hole is provided on the valve shaft;

[0010] A first external connecting pipe is provided on the valve body. When the butterfly valve flap blocks the main road conveying channel with its front surface, the first external connecting pipe is communicated with the first shunt channel, so that the blocked area is shunted outwards through the first external connecting pipe.

[0011] Preferred technical solution: The first shunt channel is provided with a first inner interface and a first outer interface. The first inner interface remains in communication with the first shunt hole. The first outer interface is arranged in the circumferential direction of the valve shaft. The first outer connecting pipe is arranged corresponding to the movement track of the first outer interface. By arranging the first outer interface in the circumferential direction of the valve shaft, the valve shaft can control the connection and disconnection with the first outer connecting pipe by rotation.

[0012] Preferred technical solution: The reverse side of the butterfly valve plate is provided with a second shunt hole; the valve shaft is provided with a second shunt channel communicating with the second shunt hole; the valve body is provided with a second outer connecting pipe; when the butterfly valve plate blocks the main path conveying channel with its reverse side, the second outer connecting pipe is in communication with the second shunt channel, so that the blocked area is shunted outward through the second outer connecting pipe, and the medium shunt direction of the blocked area is controlled by switching the front and back sides of the butterfly valve plate to block the main path conveying channel.

[0013] Preferred technical solution: The second shunt channel is provided with a second inner interface and a second outer interface. The second inner interface remains in communication with the second shunt hole. The second outer interface is arranged in the circumferential direction of the valve shaft. The second outer connecting pipe is arranged corresponding to the movement track of the second outer interface. By arranging the second outer interface in the circumferential direction of the valve shaft, the valve shaft can control the connection and disconnection with the second outer connecting pipe by rotation.

[0014] Preferred technical solution: When the first outer interface is in communication with the first outer connecting pipe, the second outer interface is misaligned and disconnected from the second outer connecting pipe; when the second outer interface is in communication with the second outer connecting pipe, the first outer interface is misaligned and disconnected from the first outer connecting pipe, so that only one of the first outer connecting pipe and the second outer connecting pipe can be selected to communicate and shunt with the first shunt hole or the second shunt hole on the butterfly valve plate.

[0015] Preferred technical solution: The first shunt channel is in communication with the second shunt channel, reducing the processing difficulty of the valve shaft.

[0016] Preferred technical solution: The valve shaft and the butterfly valve plate are connected by rivets, with simple operation and stable connection.

[0017] Due to the application of the above technical solutions, the beneficial effects of a shunt butterfly valve of the present utility model are as follows:

[0018] (1) A shunt channel is added on the butterfly valve plate, and the opening and closing of the shunt channel are controlled by flipping the butterfly valve plate, without adding a valve on the shunt branch, reducing the cost and difficulty of valve maintenance and automatic control;

[0019] (2) The outer interface on the outer periphery of the valve shaft is aligned and communicated or misaligned and closed with the external outer connecting pipe by rotation, with a simple structure and convenient control. Description of the Drawings

[0020] Figure 1 It is a structural schematic diagram of a shunt butterfly valve in the first embodiment;

[0021] Figure 2 It is an exploded view of a split butterfly valve in Embodiment 1;

[0022] Figure 3 It is a longitudinal sectional view of the present utility model when the first outer connection pipe is connected in Embodiment 2;

[0023] Figure 4 It is Figure 3 a partial enlarged schematic view at position A in

[0024] Figure 5 It is a longitudinal sectional view of the present utility model when the second outer connection pipe is connected in Embodiment 2;

[0025] Figure 6 It is Figure 5 a partial enlarged schematic view at position B in

[0026] In the above drawings, 1. valve body; 11. main road conveying channel; 12. first outer connection pipe; 13. second outer connection pipe; 2. butterfly valve disc; 21. first diversion hole; 22. second diversion hole; 3. valve shaft; 31. first diversion channel; 31a. first inner interface; 31b. first outer interface; 32. second diversion channel; 32a. second inner interface; 32b. second outer interface. Specific Embodiments

[0027] The following specific embodiments illustrate the implementation manners of the present utility model. Persons familiar with this technology can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment 1:

[0031] As Figure 1 and Figure 2 shown, a split butterfly valve disclosed by the present utility model includes a valve body 1, a butterfly valve disc 2, and a valve shaft 3. The following will specifically describe the main components of the above-mentioned present utility model:

[0032] As Figure 1 and Figure 2 shown, a main passage conveying channel 11 is provided on the valve body 1, and a first outer connection pipe 12 is connected to the side of the main passage conveying channel 11 for connecting with an outer split branch.

[0033] As Figure 1 and Figure 2 shown, the butterfly valve disc 2 is rotatably arranged in the main passage conveying channel 11 through the valve shaft 3. A first split hole 21 is provided on the front surface of the butterfly valve disc 2. By flipping the butterfly valve disc 2, the first split hole 21 can face the main passage conveying channel 11 that needs to be split. It should be noted that the front surface in the above description is only distinguished according to the setting position of the first split hole 21.

[0034] As Figure 1 and Figure 2 shown, the valve shaft 3 and the butterfly valve disc 2 are connected by rivets. A first split channel 31 communicating with the first split hole 21 is provided on the valve shaft 3; a first inner interface 31a and a first outer interface 31b are provided on the first split channel 31. The first inner interface 31a remains in communication with the first split hole 21. The first outer interface 31b is arranged on the circumference of the valve shaft 3, and the first outer connection pipe 12 is arranged corresponding to the movement track of the first outer interface 31b. It is convenient to control the connection and disconnection between the first outer connection pipe 12 and the first outer interface 31b. It should be noted that in this embodiment, the valve shaft 3 and the butterfly valve disc 2 are connected by rivets, but in other embodiments, the valve shaft 3 and the butterfly valve disc 2 can also be fixed by clamping and welding and other methods.

[0035] Referring to Figure 1 and Figure 2As shown in the figure, the principle and usage method of a flow-dividing butterfly valve in this embodiment are described as follows. When the butterfly valve disc 2 seals the main path conveying channel 11 with its front side, the first flow-dividing hole 21 faces the sealing area and is communicated with it. The first external interface 31b on the valve shaft 3 is aligned and communicated with the first external connecting pipe 12, so that the sealing area can be diverted outward through the first external connecting pipe 12. When the butterfly valve disc 2 seals the main path conveying channel 11 with its front side, the first flow-dividing hole 21 faces the non-sealed area, and the first external interface 31b on the valve shaft 3 is misaligned and disconnected from the first external connecting pipe 12, so that the sealing area is disconnected from the first external connecting pipe 12 on the flow-dividing branch, that is, the flow-dividing channel is closed. Its operation is simple. When using automatic control, only the rotation of the valve shaft 3 needs to be output to realize the rapid control of the branch flow diversion.

[0036] Embodiment Two:

[0037] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown in the figure, the difference between this embodiment and Embodiment One is that: a second flow-dividing hole 22 is also provided on the reverse side of the butterfly valve disc 2, a second flow-dividing channel 32 communicated with the second flow-dividing hole 22 is provided on the valve shaft 3, a second internal interface 32a and a second external interface 32b are provided on the second flow-dividing channel 32, the second internal interface 32a remains communicated with the second flow-dividing hole 22, the second external interface 32b is arranged in the circumferential direction of the valve shaft 3, and the second external connecting pipe 13 is arranged corresponding to the movement track of the second external interface 32b; it should be noted that in this embodiment, the first flow-dividing channel 31 and the second flow-dividing channel 32 are two separated parts, but in other embodiments, the first flow-dividing channel 31 and the second flow-dividing channel 32 can also be communicated together.

[0038] As Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown in the figure, the principle and usage method of a flow-dividing butterfly valve in this embodiment are as follows: When the butterfly valve disc 2 blocks the main passage 11 with its front side, the first flow-dividing hole 21 faces the blocking area and is connected to it, and the first external interface 31b on the valve shaft 3 is aligned and connected with the first external connecting pipe 12, so that the blocking area can be diverted outward through the first external connecting pipe 12; When the butterfly valve disc 2 blocks the main passage 11 with its back side, the second flow-dividing hole 22 faces the blocking area and is connected to it, the second external interface 32b on the valve shaft 3 is aligned and connected with the second external connecting pipe 13, and the first external interface 31b is misaligned and disconnected from the first external connecting pipe 12, so that the blocking area can be diverted outward separately through the second external connecting pipe 13. It should be noted that in this embodiment, only one of the first external connecting pipe 12 and the second external connecting pipe 13 can be selected to be connected to the first flow-dividing hole 21 or the second flow-dividing hole 22 on the butterfly valve disc 2. However, in other embodiments, when the first external connecting pipe 12 is connected to the first flow-dividing hole 21, the second external connecting pipe 13 can be connected to the second flow-dividing hole 22 at the same time. Because the first flow-dividing hole 21 or the second flow-dividing hole 22 is located on the front and back sides of the butterfly valve disc 2 respectively, when only one side blocks and diverts the medium, the diversion branch switch on the other side will not affect it, realizing rapid diversion.

[0039] The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A shunt butterfly valve, comprising a valve body (1), a butterfly valve disc (2) and a valve shaft (3). A main passage conveying channel (11) is provided on the valve body (1). The butterfly valve disc (2) is rotatably arranged in the main passage conveying channel (11) through the valve shaft (3). It is characterized in that: A first shunt hole (21) is provided on the front surface of the butterfly valve disc (2); A first shunt channel (31) communicating with the first shunt hole (21) is provided on the valve shaft (3); A first external connecting pipe (12) is provided on the valve body (1). When the butterfly valve disc (2) seals the main passage conveying channel (11) with its front surface, the first external connecting pipe (12) communicates with the first shunt channel (31).

2. The split butterfly valve according to claim 1, characterized in that: A first inner interface (31a) and a first outer interface (31b) are provided on the first shunt channel (31). The first inner interface (31a) remains in communication with the first shunt hole (21). The first outer interface (31b) is arranged in the circumferential direction of the valve shaft (3). The first external connecting pipe (12) is arranged corresponding to the movement track of the first outer interface (31b).

3. The split butterfly valve according to claim 2, characterized in that: A second shunt hole (22) is provided on the back surface of the butterfly valve disc (2); A second shunt channel (32) communicating with the second shunt hole (22) is provided on the valve shaft (3); A second external connecting pipe (13) is provided on the valve body (1); When the butterfly valve disc (2) seals the main passage conveying channel (11) with its back surface, the second external connecting pipe (13) communicates with the second shunt channel (32).

4. A split butterfly valve according to claim 3, characterized in that: A second inner interface (32a) and a second outer interface (32b) are provided on the second shunt channel (32). The second inner interface (32a) remains in communication with the second shunt hole (22). The second outer interface (32b) is arranged in the circumferential direction of the valve shaft (3). The second external connecting pipe (13) is arranged corresponding to the movement track of the second outer interface (32b).

5. The shunt butterfly valve according to claim 4, characterized in that: When the first outer interface (31b) communicates with the first external connecting pipe (12), the second outer interface (32b) is misaligned and disconnected from the second external connecting pipe (13); When the second outer interface (32b) communicates with the second external connecting pipe (13), the first outer interface (31b) is misaligned and disconnected from the first external connecting pipe (12).

6. The split butterfly valve according to claim 5, characterized in that: The first shunt channel (31) communicates with the second shunt channel (32).

7. A split butterfly valve according to claim 6, characterized in that: The valve shaft (3) and the butterfly valve disc (2) are connected by rivets.

Images