Bypass valve with flushing device and detachable valve seat

Abstract

The utility model relates to the technical field of bypass valves, in particular to a bypass valve with a flushing device and a detachable valve seat, which comprises a valve body, a valve rod, a butterfly plate and the flushing device, the valve rod is rotatably arranged in the valve body, the valve rod penetrates through a medium hole of the valve body and is connected with the butterfly plate, and the detachable valve seat matched with the butterfly plate is arranged in the medium hole; the flushing device comprises two semicircular flushing pipes and a water supply pipe, and the water supply pipe is arranged at the lower end of the valve body; the lower ends of the two semicircular flushing pipes are provided with connectors, and the upper ends of the two branch pipes are connected with the connectors of the corresponding semicircular flushing pipes in a sealed mode. The baffle is composed of a plurality of arc-shaped plates, the baffle can be conveniently connected with the annular limiting groove in an inserted mode, the baffle is provided with the valve seat adjusting bolts and abuts against the valve seat body through the valve seat adjusting bolts, adjustment and disassembly are convenient, maintenance is convenient, and safety and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bypass valves, and more specifically to a bypass valve with a flushing device and a detachable valve seat. Background Art

[0002] As an opening and closing and regulating device in the pipeline system, the bypass valve is widely used in metallurgy, coking, steel, water conservancy and other industries. The existing bypass valve is just an ordinary butterfly valve, such as the butterfly valve disclosed in the Chinese invention patent with publication number CN201580070775.9, which includes a valve box with a flow path; a plate-shaped valve body for opening and closing the flow path; and a rotatable valve stem that engages with the valve body and rotates the valve body, and the butterfly valve has a valve body side valve seat portion, a valve box side valve seat portion and a valve body moving mechanism. The valve body side valve seat portion is formed on the outer periphery of the valve body. The valve box side valve seat portion is formed on the valve box. The valve body moving mechanism moves the valve body between the blocking position and the open position along the extension direction of the flow path as the valve stem rotates. The blocking position is the position where the valve body side valve seat portion and the valve box side valve seat portion contact and close the flow path.

[0003] The butterfly valve has a one-way seal, which cannot cool the cavity in a high temperature environment. At the same time, the valve seat is fixed and cannot be replaced online, which affects the working effect of the bypass valve.

[0004] Therefore, it is necessary to improve the prior art. Utility Model Content

[0005] In order to overcome the deficiencies in the prior art, a bypass valve with an active cooling device and a detachable valve seat is provided.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A bypass valve with a flushing device and a detachable valve seat, comprising a valve body, a valve stem, a butterfly plate and a flushing device, wherein the valve stem is rotatably arranged in the valve body, the valve stem passes through a medium hole of the valve body and is connected to the butterfly plate, and a detachable valve seat matching the butterfly plate is arranged in the medium hole;

[0008] The flushing device comprises a semicircular flushing pipe and a water supply pipe, wherein two semicircular flushing pipes are provided, and the two semicircular flushing pipes are symmetrically arranged on the left and right sides of the medium hole, and the water supply pipe is arranged at the lower end of the valve body, and the water supply pipe comprises a tee, an elbow, a main pipe, a branch pipe and a flange, wherein one hole of the tee is connected to the elbow, and the tee and the elbow both have a hole connected to the branch pipe, and the other hole of the tee is connected to the flange through the main pipe; the two branch pipes are arranged in the same direction;

[0009] The lower ends of the two semicircular flushing pipes are both provided with interfaces, and the upper ends of the two branch pipes are respectively sealed and connected with the interfaces of the corresponding semicircular flushing pipes.

[0010] Preferably, the semicircular flushing pipe is arranged on the back side of the butterfly plate, and the semicircular flushing pipe is provided with a plurality of flushing holes, and the flushing direction of the flushing holes points to the back side of the butterfly plate.

[0011] Preferably, the removable valve seat includes a valve seat body and a baffle, the valve body is provided with a valve body stop, the valve seat body is arranged at the valve body stop, and a valve seat sealing ring is arranged between one side of the valve seat body and the valve body stop; an annular limiting groove is provided on the valve body, the baffle is arranged in the annular limiting groove, and a valve seat adjusting bolt is threadedly connected to the baffle and the valve seat body is tightened by the valve seat adjusting bolt.

[0012] Preferably, the baffle includes a plurality of arc-shaped plates, and the plurality of arc-shaped plates are evenly distributed in the annular limiting groove in the circumferential direction.

[0013] Preferably, a sealing groove is provided on the outer ring surface of the valve seat body, and an O-ring for radial sealing is provided in the sealing groove.

[0014] Preferably, the flange is connected to a water supply pipe.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The baffle of the utility model is composed of a plurality of arc-shaped plates, which is convenient for plugging the baffle with the annular limit groove. A valve seat adjusting bolt is arranged on the baffle and the valve seat body is tightened by the valve seat adjusting bolt, which is convenient for adjustment and disassembly, and the maintenance is convenient, safe and fast.

[0017] 2. The utility model is provided with a flushing device. When the temperature inside the valve body rises, water can be sprayed to reduce the temperature, thereby increasing the service life of the valve body and butterfly plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a side view of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the detachable valve seat structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the semicircular flushing pipe structure;

[0023] Figure 5 for Figure 4 Partial schematic diagram in the middle A direction;

[0024] Figure 6 This is a schematic diagram of the front view structure of the water supply pipe;

[0025] Figure 7 It is a schematic diagram of the side structure of the water supply pipe.

[0026] In the figure: 1-valve body, 11-valve body stop, 12-annular limit groove, 2-valve stem, 3-butterfly plate, 4-detachable valve seat, 41-valve seat body, 42-baffle, 43-valve seat sealing ring, 44-valve seat adjusting bolt, 45-O-ring, 5-flushing device, 51-semicircular flushing pipe, 52-tee head, 53-elbow, 54-main pipe, 55-branch pipe, 56-flange, 57-interface, 58-flushing hole, 6-medium hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figures 1 to 7 As shown, a bypass valve with a flushing device and a detachable valve seat comprises a valve body 1, a valve stem 2, a butterfly plate 3 and a flushing device 5. The valve stem 2 is rotatably arranged in the valve body 1. The valve stem 2 passes through the medium hole 6 of the valve body 1 and is connected to the butterfly plate 3. The butterfly plate 3 is controlled to move by the valve stem 2. A detachable valve seat 4 matched with the butterfly plate 3 is arranged in the medium hole 6. The butterfly plate 3 cooperates with the detachable valve seat 4 to realize the on-off control of the medium hole 6.

[0029] In order to avoid working in a high temperature environment affecting the life of the bypass valve, the present application is provided with a flushing device. Specifically, the flushing device 5 includes a semicircular flushing pipe 51 and a water supply pipe. Two semicircular flushing pipes 51 are provided. The two semicircular flushing pipes 51 are symmetrically arranged on the left and right sides of the medium hole 6. The semicircular flushing pipe 51 is arranged on the back side of the butterfly plate 3. The semicircular flushing pipe 51 is provided with a plurality of flushing holes 58. The flushing direction of the flushing hole 58 points to the back side of the butterfly plate 3, and the valve body 1 and the butterfly plate 3 are cooled by spraying water. The water supply pipe is arranged at the lower end of the valve body 1, and includes a tee 52, an elbow 53, a main pipe 54, a branch pipe 55 and a flange 56. One hole of the tee 52 is connected to the elbow 53, and both the tee 52 and the elbow 53 have a hole connected to the branch pipe 55. The other hole of the tee 52 is connected to the flange 56 through the main pipe 54. The two branch pipes 55 are arranged in the same direction, and the lower ends of the two semicircular flushing pipes 51 are provided with interfaces 57. The upper ends of the two branch pipes 55 are respectively sealed and connected to the interfaces 57 of the corresponding semicircular flushing pipes 51, and the flange 56 is connected to the water supply pipe. Water is supplied to the main pipe 54 through the water supply pipe, and then the water is distributed to the two branch pipes 55 through the tee 52 and the elbow 53, and the two semicircular flushing pipes 51 are respectively supplied with water.

[0030] The removable valve seat 4 includes a valve seat body 41 and a baffle 42. A valve body stop 11 is arranged on the valve body 1. The valve seat body 41 is arranged at the valve body stop. A valve seat sealing ring 43 is arranged between one side of the valve seat body 41 and the valve body stop 11. Sealing is achieved by the valve seat sealing ring 43. The valve seat sealing ring 43 is made of plastic material. Therefore, the valve seat body 41 is an elastic valve seat, which can achieve bidirectional sealing.

[0031] The valve body 1 is provided with an annular limiting groove 12, and the baffle plate 42 includes a plurality of arc-shaped plates, which are evenly distributed in the annular limiting groove 12 in the circumferential direction. The baffle plate 42 is threadedly connected with a valve seat adjusting bolt 44 and is pressed against the valve seat body 41 by the valve seat adjusting bolt 44. The baffle plate 42 formed by splicing the plurality of arc-shaped plates is easy to assemble and disassemble, and is also convenient for adjusting the position of the valve seat body 41.

[0032] The outer ring surface of the valve seat body 41 is provided with a sealing groove, and an O-type sealing ring 45 for radial sealing is provided in the sealing groove. There are both O-type sealing rings 45 for radial sealing and valve seat sealing rings 43 for axial sealing between the bypass valve seat body 41 and the valve body 1, and the double sealing ensures the reliability of the sealing.

[0033] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A bypass valve with a flushing device and a detachable valve seat, characterized in that: It comprises a valve body (1), a valve stem (2), a butterfly plate (3) and a flushing device (5), wherein the valve stem (2) is rotatably arranged in the valve body (1), the valve stem (2) passes through a medium hole (6) of the valve body (1) and is connected to the butterfly plate (3), and a detachable valve seat (4) matching the butterfly plate (3) is arranged in the medium hole (6); The flushing device (5) comprises a semicircular flushing pipe (51) and a water supply pipe. Two semicircular flushing pipes (51) are provided. The two semicircular flushing pipes (51) are symmetrically arranged on the left and right sides of the medium hole (6). The water supply pipe is arranged at the lower end of the valve body (1). The water supply pipe comprises a tee (52), an elbow (53), a main pipe (54), a branch pipe (55) and a flange (56). One hole of the tee (52) is connected to the elbow (53). Both the tee (52) and the elbow (53) have a hole connected to the branch pipe (55). The other hole of the tee (52) is connected to the flange (56) through the main pipe (54). The two branch pipes (55) are arranged in the same direction. The lower ends of the two semicircular flushing pipes (51) are each provided with an interface (57), and the upper ends of the two branch pipes (55) are respectively sealedly connected to the interfaces (57) of the corresponding semicircular flushing pipes (51).

2. A bypass valve with a flushing device and a detachable valve seat according to claim 1, characterized in that: The semicircular flushing pipe (51) is arranged on the back side of the butterfly plate (3), and the semicircular flushing pipe (51) is provided with a plurality of flushing holes (58), wherein the flushing direction of the flushing holes (58) points to the back side of the butterfly plate (3).

3. A bypass valve with a flushing device and a detachable valve seat according to claim 1, characterized in that: The detachable valve seat (4) comprises a valve seat body (41) and a baffle (42); the valve body (1) is provided with a valve body stop (11); the valve seat body (41) is arranged at the valve body stop; a valve seat sealing ring (43) is arranged between one side of the valve seat body (41) and the valve body stop (11); an annular limiting groove (12) is provided on the valve body (1); the baffle (42) is arranged in the annular limiting groove (12); a valve seat adjusting bolt (44) is threadedly connected to the baffle (42) and the valve seat body (41) is tightened by the valve seat adjusting bolt (44).

4. A bypass valve with a flushing device and a detachable valve seat according to claim 3, characterized in that: The baffle (42) comprises a plurality of arc-shaped plates, and the plurality of arc-shaped plates are evenly distributed in the annular limiting groove (12) in the circumferential direction.

5. A bypass valve with a flushing device and a detachable valve seat according to claim 3, characterized in that: The outer annular surface of the valve seat body (41) is provided with a sealing groove, and an O-type sealing ring (45) for radial sealing is provided in the sealing groove.

6. A bypass valve with a flushing device and a detachable valve seat according to claim 1, characterized in that: The flange (56) is connected to a water supply pipe.

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