Pneumatic flue gas butterfly valve

Abstract

The utility model provides a pneumatic flue gas butterfly valve, and belongs to the technical field of butterfly valves. The technical problem that a valve is large in rotating radius and prone to interference with the internal structure of a pipeline is solved. According to the technical scheme, the pneumatic flue gas butterfly valve comprises a valve body and a valve, the valve comprises a plurality of valve plates, the ends of the valve plates are all connected with valve shafts, the valve shafts are all rotationally connected with the valve body, the valve shafts are all connected with swing arms, the same ends of the swing arms are connected with the same connecting rod, and a starting device is further arranged on the valve body. The starting device is connected with one valve shaft and used for controlling the valve shaft to rotate. The valve has the advantages that the valve is divided into the valve plates, the valve plates are controlled to rotate synchronously through the swing arms and the connecting rods, the rotating radius of the valve can be reduced on the premise that the opening and closing functions of the valve are achieved, and interference between the valve and the structure in a pipeline is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field especially relates to a kind of pneumatic flue gas butterfly valve. BACKGROUND

[0002] Flue gas butterfly valve is the device of the shunt, confluence or flow direction switching, cutting and regulating effect to medium in flue gas pipeline, widely used in coal chemical industry, petroleum chemical industry and other production fields.

[0003] The flue gas butterfly valve in prior art includes valve body. The valve body is annular, and the valve body is provided with a valve door. The valve door is a circular door plate, and the valve door is rotationally connected with the valve body on a diameter line. The valve door is matched with the inner wall of the valve body, and the valve door is controlled to rotate by a pneumatic actuator. When cutting or regulating the medium in the pipeline, the valve door needs to be rotated to open or close the butterfly valve. However, the diameter of the valve door used in chemical production is large, and the rotating radius of the valve door is also large. When the valve door rotates, the part of the valve door in the pipeline is easy to interfere with other structures in the pipeline, which can cause damage to the valve door or the structure in the pipeline. SUMMARY

[0004] In order to reduce the rotating radius of the valve door and avoid the interference between the valve door and the structure in the pipeline, the utility model provides a kind of pneumatic flue gas butterfly valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme, specifically as follows:

[0006] A kind of pneumatic flue gas butterfly valve, including valve body and valve door, the valve door includes several valve plates, the end of several valve plates is connected with valve shaft, several valve shafts are rotationally connected with valve body, several valve shafts are connected with swing arm, the end of several swing arms away from corresponding valve shaft is connected with same connecting rod, and starting device is further provided on valve body, and starting device is pneumatic actuator, the starting device is connected with one of valve shafts, and is used to control the rotation of the valve shaft.

[0007] Further, the two ends of the valve plate are provided with valve shafts, the valve body is connected with several supports, the number of supports is twice the number of valve plates, the valve shafts at the two ends of the valve plate are rotationally connected in the corresponding supports, and the end of the valve shaft in the support is sleeved with a shaft sleeve to avoid wear between the end of the valve shaft and the inside.

[0008] Further, the valve plate includes a plate body and a mounting shell, a matching groove is provided on the plate body, and a mounting space is formed between the mounting shell and the matching groove. The valve shaft connected with the valve plate is inserted between the corresponding mounting shell and the matching groove, and the mounting shell is connected with the plate body and the valve shaft respectively.

[0009] Further, a bolt is provided through the mounting shell, and the bolt is inserted into the corresponding valve shaft and threadedly connected with the valve shaft.

[0010] Further, the installation shell is provided with installation plates on both sides, the side wall of the plate body is provided with a plug-in groove body for inserting the installation plate, the bottom of the plug-in groove body is closed to form an upper opening for inserting the installation plate, and the side wall of the plate body is also rotationally connected with a positioning groove body which can be rotationally buckled on the installation plate.

[0011] Further, the inner walls of the installation shell and the cooperating groove body are arc-shaped walls matched with the outer side wall of the valve shaft.

[0012] Compared with the prior art, the valve plate of the utility model has the advantages that:

[0013] 1. The starting device controls rotation of one valve shaft, drives rotation of the swing arm of the valve shaft, drives movement of the connecting rod by the swing arm, further drives synchronous rotation of the remaining swing arms by the connecting rod, thereby driving synchronous rotation of the remaining valve shafts, and realizing rotation of all valve plates. Thus, the valve is opened, the valve plate is small in width, the rotation radius of the valve is reduced, and interference with the structure in the pipeline is avoided.

[0014] 2. When the valve plate is installed, the plate body and the installation shell are buckled on the valve shaft from both sides of the valve shaft, the lower end of the installation plate is inserted into the plug-in groove body, the positioning groove body is rotated and buckled on the upper end of the installation plate, the bolt is screwed through the installation shell and inserted into the valve shaft to be threadedly connected with the valve shaft, and thus the valve plate installation is completed; the valve plate is convenient to assemble and disassemble and is easy to replace. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model.

[0016] Figure 1 It is a structure schematic view of the pneumatic flue gas butterfly valve in the embodiments of the utility model.

[0017] Figure 2 It is a top view of the pneumatic flue gas butterfly valve in the embodiments of the utility model.

[0018] Figure 3 It is a structure schematic view for indicating the connection relationship between the plate body and the installation shell in the embodiments of the utility model.

[0019] Figure 4 It is a sectional view schematic view for indicating the connection relationship between the bolt and the valve shaft in the embodiments of the utility model.

[0020] Wherein, the drawing mark is: 1, valve body; 11, support; 12, starting device; 2, valve; 21, valve plate; 211, plate body; 2111, cooperating groove body; 2112, plug-in groove body; 2113, positioning groove body; 212, installation shell; 2121, installation plate; 213, bolt; 22, valve shaft; 221, swing arm; 222, connecting rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below in combination with the drawings and examples. Of course, the specific examples described here are only used to explain the utility model and not used to limit the utility model.

[0022] Referring to Figure 1 The utility model provides technical scheme is a kind of pneumatic flue butterfly valve, including valve body 1 and valve 2, valve body 1 and valve 2 are circular, valve body 1 is further annular, and valve 2 is rotatably connected on the inner wall of valve body 1.

[0023] Preferably, valve 2 includes five valve plates 21, both ends of five valve plates 21 are connected with valve shaft 22, and five supports 11 are respectively fixedly connected to the two sides of valve body 1, ten valve shafts 22 are respectively inserted into five supports 11 and rotatably connected with corresponding support 11, and the one end of valve shaft 22 inserted into support 11 is sleeved with shaft sleeve to avoid the abrasion of valve shaft 22.

[0024] Preferably, the valve shaft 22 of the same end of five valve plates 21 is rotatably connected with the swing arm 221, and the same connecting rod 222 is connected to the five swing arms 221, and is rotatably connected with the connecting rod 222; the upper end of valve body 1 is also connected with starting device 12, and the starting device 12 is connected with one valve shaft 22 of intermediate valve plate 21, and the starting device 12 includes pneumatic actuator and manual wheel.

[0025] When valve 2 needs to be opened, pneumatic actuator is started to drive the rotation of intermediate valve shaft 22 and valve plate 21, the swing arm 221 of intermediate valve shaft 22 is synchronously rotated to drive the movement of connecting rod 222, connecting rod 222 drives the rotation of the remaining four swing arms 221, further drives the synchronous rotation of the remaining four valve shafts 22, so that the remaining four valve plates 21 are synchronously rotated, five valve plates 21 are synchronously rotated to be opened, the width of valve plate 21 is small, and the rotation radius when rotating is small, so that the valve plate 21 does not easily interfere with the structure in the pipeline, thereby avoiding the damage of valve 2 and the structure in the pipeline.

[0026] Preferably, valve plate 21 includes plate body 211 and mounting shell 212, and the inner wall of mounting shell 212 and cooperating groove body 2111 is arc-shaped wall matched with the outer side wall of valve shaft 22, the valve shaft 22 at both ends of the valve plate 21 is inserted into the mounting space formed by mounting shell 212 and cooperating groove body 2111, two bolts 213 are arranged on mounting shell 212, the threaded ends of two bolts 213 pass through the holes pre-provided at both ends of mounting shell 212 and are respectively inserted into two valve shafts 22, and are threadedly connected with valve shaft 22.

[0027] Preferably, the mounting shell 212 is integrally formed with mounting plates 2121 on both sides, the side wall of the lower end of the plate body 211 is fixedly connected with a plug-in groove body 2112, the bottom of the plug-in groove body 2112 is closed and the upper part is open, so as to insert the mounting plate 2121, the side wall of the upper end of the plate body 211 is also rotatably connected with a positioning groove body 2113, one side of the positioning groove body 2113 is closed and the other side is open, the positioning groove body 2113 can be rotatably buckled on the upper end of the mounting plate 2121, and the mounting plate 2121 is attached to and matched with the inner walls of the plug-in groove body 2112 and the positioning groove body 2113.

[0028] When the valve plate 21 is mounted, the plate body 211 and the mounting shell 212 are buckled on the valve shaft 22 from both sides of the valve shaft 22, the lower end of the mounting plate 2121 is inserted into the plug-in groove body 2112, the positioning groove body 2113 is buckled on the upper end of the mounting plate, the bolt 213 is screwed through the mounting shell 212 and inserted into the valve shaft 22 and is threadedly connected with the valve shaft 22, so that the mounting of the valve plate 21 is completed; the valve plate 21 is convenient to mount and dismount and is easy to replace.

[0029] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pneumatic flue gas butterfly valve, comprising a valve body (1) and a valve (2), characterized in that: The valve (2) comprises a plurality of valve plates (21), the ends of the plurality of valve plates (21) are connected to valve shafts (22), the plurality of valve shafts (22) are rotatably connected to the valve body (1), the plurality of valve shafts (22) are connected to swing arms (221), the same end of the plurality of swing arms (221) is connected to the same connecting rod (222), and the valve body (1) is further provided with a starting device (12), the starting device (12) is connected to one of the valve shafts (22) and is used to control the rotation of the valve shaft (22); The valve plate (21) includes a plate body (211) and a mounting shell (212), a matching groove body (2111) is provided on the plate body (211), and a mounting space is formed between the mounting shell (212) and the matching groove body (2111), and the valve shaft (22) connected to the valve plate (21) is inserted between the corresponding mounting shell (212) and the matching groove body (2111), and the mounting shell (212) is respectively connected to the plate body (211) and the valve shaft (22).

2. The pneumatic flue gas butterfly valve according to claim 1, characterized in that: Both ends of the plurality of valve plates (21) are provided with valve shafts (22), the valve body (1) is connected to a plurality of brackets (11), the number of the brackets (11) is twice the number of the valve plates (21), and the valve shafts (22) at both ends of the valve plates (21) are rotatably connected in the corresponding brackets (11).

3. The pneumatic flue gas butterfly valve according to claim 1, characterized in that: A bolt (213) is provided through the mounting shell (212), and the bolt (213) is inserted into the corresponding valve shaft (22) and is threadedly connected to the valve shaft (22).

4. The pneumatic flue gas butterfly valve according to claim 1, characterized in that: Mounting plates (2121) are provided on both sides of the mounting shell (212); a plug-in slot (2112) is provided on the side wall of the plate body (211) for inserting the mounting plate (2121); and a positioning slot (2113) is rotatably connected to the side wall of the plate body (211); and the positioning slot (2113) can be rotatably buckled on the mounting plate (2121).

5. The pneumatic flue gas butterfly valve according to claim 1, characterized in that: The inner wall of the mounting shell (212) and the inner wall of the matching groove body (2111) are both arc-shaped walls adapted to the outer wall of the valve shaft (22).

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