Sleeve type valve for switching air flow paths of ventilating duct

Abstract

The utility model discloses a sleeve type valve for switching air flow paths of a ventilating pipeline, which comprises a ventilating pipe, an adjusting mechanism is arranged on one side of the ventilating pipe, a limit block is fixedly mounted in the ventilating pipe, a sleeve valve is sleeved in the ventilating pipe, and a protective cover is fixedly connected to one end of the sleeve valve. A pull ring is pulled to drive a connecting column and a cross-shaped protruding block to move towards one side, so that a compression spring can be extruded, after a rotating column reaches a designated position, the pull ring is loosened, the cross-shaped protruding block can be clamped to one end of the rotating column under the action of the compression spring, and the connecting column and the rotating column can be driven to rotate by rotating an operating handle. The sleeve valve can be quickly replaced only by opening a rotating block to enable a clamping block to be separated from a ventilation pipe, pulling a pull ring to enable a cross-shaped protruding block to be separated from a rotating column and pulling a holding rod.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation ducts, in particular to a sleeve valve for switching gas flow paths in ventilation ducts. Background Art

[0002] As the domestic requirements for environmental protection become increasingly higher, the emission of waste gas pollutants from industrial plants is becoming more and more stringent. The treatment of waste gas pollutants is carried out through a combination of capture devices, ventilation duct transportation systems, and treatment equipment for purification. The increasingly high emission index requirements not only put higher and higher requirements on the treatment equipment, but also on the sealing and temperature resistance of the vents in the pipeline system.

[0003] At present, the vents used in ventilation ducts in China are mainly butterfly valves and ordinary air valves. At present, the butterfly valves used in ventilation ducts mainly adopt center-sealed butterfly valves, which adopt the form of hard sealing. Although ordinary air valves have low costs, their sealing performance is not good, and the valve plate is prone to gaps and deformation due to heat after long-term use, which will make subsequent replacement very troublesome. In order to facilitate the replacement of such valves, this scheme proposes a sleeve-type valve for switching the gas flow path of ventilation ducts. Utility Model Content

[0004] The utility model aims to solve the disadvantage of being difficult to disassemble in the prior art and proposes a sleeve type valve for switching the gas flow path of a ventilation duct.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sleeve-type valve for switching the gas flow path of a ventilation duct comprises a ventilation pipe, one side of the ventilation pipe is provided with an adjustment mechanism, a limit block is fixedly installed inside the ventilation pipe, a sleeve valve is sleeved inside the ventilation pipe, one end of the sleeve valve is fixedly connected to a protective cover, the other end of the sleeve valve is connected to the limit block, connecting blocks are symmetrically fixedly connected on both sides of the protective cover, a grip rod is fixedly connected in the middle of the two connecting blocks, a rotating block is movably penetrated by the grip rod, one end of the rotating block is fixedly connected to a clamping block, the clamping block is clamped and connected to the ventilation pipe, a second limit plate is fixedly installed on the upper part of the sleeve valve, a third limit plate is fixedly installed on the lower part of the sleeve valve, a rotating column is movably penetrated inside the sleeve valve, a sealing block is fixedly penetrated by the rotating column, and the sealing block is connected to the second limit plate and the third limit plate.

[0007] Preferably, a cross groove is provided at one end of the rotating column.

[0008] Preferably, the adjustment mechanism includes a fixing plate, which is fixedly connected to the side of the ventilation pipe, a connecting column movably passes through the fixing plate, the connecting column is rotatably connected to the ventilation pipe, and one end of the connecting column is fixedly connected to a cross protruding block.

[0009] Preferably, the cross protrusion block is snap-connected with one end of the rotating column, a fixing ring and a first limiting plate are passed through the fixing of the connecting column, and an operating handle is fixedly connected to the outer side of the fixing ring.

[0010] Preferably, a compression spring is provided on the outer side of the connecting column, and a connecting plate is movably passed through the connecting column.

[0011] Preferably, the other end of the connecting column is fixedly connected to a connecting plate, and the outer side of the connecting plate is fixedly connected to a pull ring.

[0012] The utility model has the following beneficial effects:

[0013] The sleeve valve is sleeved in the ventilation pipe, and then the rotating block is rotated to drive the engaging block to rotate, so that the engaging block is engaged and connected to the ventilation pipe, thereby achieving the effect of fixing the sleeve valve. At the same time, when the sleeve valve enters the ventilation pipe, the pull ring is pulled to drive the connecting column and the cross protrusion block to move to one side, thereby squeezing the compression spring. After the rotating column reaches the specified position, the pull ring is released, so that under the action of the compression spring, the cross protrusion block will be engaged with one end of the rotating column. At this time, the connecting column and the rotating column can be driven to rotate by rotating the operating handle, thereby driving the sealing block to rotate, thereby sealing the sleeve valve. When the sleeve valve needs to be replaced, it is only necessary to open the rotating block to disengage the engaging block from the ventilation pipe, and then pull the pull ring to disengage the cross protrusion block from the rotating column, and then pull the grip rod to quickly replace the sleeve valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the side structure of a sleeve-type valve for switching the gas flow path of a ventilation duct proposed by the utility model;

[0015] Figure 2 A schematic diagram of the partial structure of a sleeve-type valve for switching the gas flow path of a ventilation duct proposed by the utility model;

[0016] Figure 3 This is a schematic cross-sectional view of the sleeve-type valve for switching the gas flow path of the ventilation duct proposed by the utility model;

[0017] Figure 4 A schematic diagram of the partial structure of a sleeve-type valve for switching the gas flow path of a ventilation duct proposed by the utility model;

[0018] Figure 5 This is a structural schematic diagram of a sleeve-type valve regulating mechanism for switching the gas flow path of a ventilation duct proposed by the utility model.

[0019] In the figure: 1. ventilation pipe; 101. limit block; 2. adjustment mechanism; 201. fixed plate; 202. connecting column; 203. cross protrusion block; 204. fixed ring; 205. operating handle; 206. first limit plate; 207. compression spring; 208. connecting plate; 209. connecting plate; 210. pull ring; 3. sleeve valve; 301. second limit plate; 302. third limit plate; 303. rotating column; 304. sealing block; 4. protective cover; 5. connecting block; 6. grip rod; 7. rotating block; 8. locking block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-5 , a sleeve-type valve for switching the gas flow path of a ventilation duct comprises a ventilation pipe 1, a regulating mechanism 2 is arranged on one side of the ventilation pipe 1, a limiting block 101 is fixedly installed inside the ventilation pipe 1, a sleeve valve 3 is sleeved inside the ventilation pipe 1, one end of the sleeve valve 3 is fixedly connected to a protective cover 4, the other end of the sleeve valve 3 is connected to the limiting block 101, connecting blocks 5 are symmetrically fixedly connected on both sides of the protective cover 4, a grip rod 6 is fixedly connected in the middle of the two connecting blocks 5, a rotating block 7 is movably penetrated by the grip rod 6, a clamping block 8 is fixedly connected to one end of the rotating block 7, the clamping block 8 is clamped and connected to the ventilation pipe 1, a second limiting plate 301 is fixedly installed on the upper part of the sleeve valve 3, a third limiting plate 302 is fixedly installed on the lower part of the sleeve valve 3, a rotating column 303 is movably penetrated inside the sleeve valve 3, a sealing block 304 is fixedly penetrated by the rotating column 303, and the sealing block 304 is connected to the second limiting plate 301. The limiting plate 301 is connected to the third limiting plate 302, and a cross groove is provided at one end of the rotating column 303. The adjusting mechanism 2 includes a fixed plate 201, which is fixedly connected to the side of the ventilation pipe 1, and the fixed plate 201 is movably penetrated by a connecting column 202, and the connecting column 202 is rotatably connected to the ventilation pipe 1, and one end of the connecting column 202 is fixedly connected with a cross protrusion block 203, and the cross protrusion block 203 is snap-connected with one end of the rotating column 303. The connecting column 202 is fixedly penetrated by a fixing ring 204 and a first limiting plate 206, and the outer side of the fixing ring 204 is fixedly connected with an operating handle 205, and a compression spring 207 is provided on the outer side of the connecting column 202, and the connecting column 202 is movably penetrated by a connecting plate 208, and the other end of the connecting column 202 is fixedly connected with a connecting plate 209, and the outer side of the connecting plate 209 is fixedly connected with a pull ring 210, so as to achieve the effect of convenient replacement.

[0022] The use method and advantages of the utility model: When the sleeve valve for switching the gas flow path of the ventilation duct is used, the working process is as follows:

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when using the sleeve valve for switching the gas flow path of the ventilation duct, the sleeve valve 3 is first sleeved in the ventilation pipe 1, and then the rotating block 7 is rotated to drive the clamping block 8 to rotate, so that the clamping block 8 is clamped and connected to the ventilation pipe 1, thereby achieving the effect of fixing the sleeve valve 3. At the same time, when the sleeve valve 3 enters the ventilation pipe 1, the pull ring 210 is pulled, thereby driving the connecting column 202 and the cross protruding block 203 to move to one side, thereby squeezing the compression spring 207. After the rotating column 303 reaches the specified position, the pull ring 210 is released. Under the action of the compression spring 207, the cross protrusion block 203 will be engaged with one end of the rotating column 303. At this time, by rotating the operating handle 205, the connecting column 202 and the rotating column 303 can be driven to rotate, thereby driving the sealing block 304 to rotate, thereby sealing the sleeve valve 3. When the sleeve valve 3 needs to be replaced, it is only necessary to open the rotating block 7 to disengage the engaging block 8 from the ventilation pipe 1, and then pull the pull ring 210 to disengage the cross protrusion block 203 from the rotating column 303, and then pull the handle 6 to quickly replace the sleeve valve.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sleeve-type valve for switching a gas flow path in a ventilation duct, comprising a ventilation duct (1), characterized in that: The ventilation pipe (1) is provided with an adjustment mechanism (2) on one side, a limit block (101) is fixedly installed inside the ventilation pipe (1), a sleeve valve (3) is sleeved inside the ventilation pipe (1), one end of the sleeve valve (3) is fixedly connected to a protective cover (4), the other end of the sleeve valve (3) is connected to the limit block (101), connecting blocks (5) are symmetrically fixedly connected to the two sides of the protective cover (4), a gripping rod (6) is fixedly connected between the two connecting blocks (5), and a rotating block (7) is movable through the gripping rod (6). One end of the rotating block (7) is fixedly connected to a locking block (8), and the locking block (8) is locked and connected to the ventilation pipe (1). A second limit plate (301) is fixedly installed on the upper part of the sleeve valve (3), and a third limit plate (302) is fixedly installed on the lower part of the sleeve valve (3). A rotating column (303) is movably penetrated inside the sleeve valve (3), and a sealing block (304) is fixedly penetrated on the rotating column (303). The sealing block (304) is connected to the second limit plate (301) and the third limit plate (302).

2. The sleeve-type valve for switching the gas flow path of the ventilation duct according to claim 1 is characterized in that: One end of the rotating column (303) is provided with a cross groove.

3. The sleeve-type valve for switching the gas flow path of the ventilation duct according to claim 1 is characterized in that: The adjustment mechanism (2) comprises a fixing plate (201), the fixing plate (201) being fixedly connected to the side of the ventilation pipe (1), a connecting column (202) movably passing through the fixing plate (201), the connecting column (202) being rotatably connected to the ventilation pipe (1), and a cross protruding block (203) being fixedly connected to one end of the connecting column (202).

4. The sleeve-type valve for switching the gas flow path of the ventilation duct according to claim 3 is characterized in that: The cross protruding block (203) is snap-connected with one end of the rotating column (303); a fixing ring (204) and a first limiting plate (206) are inserted through the fixing of the connecting column (202); and an operating handle (205) is fixedly connected to the outer side of the fixing ring (204).

5. The sleeve-type valve for switching the gas flow path of the ventilation duct according to claim 4 is characterized in that: A compression spring (207) is arranged on the outer side of the connecting column (202), and a connecting plate (208) is movably passed through the connecting column (202).

6. The sleeve-type valve for switching the gas flow path of the ventilation duct according to claim 5, characterized in that: The other end of the connecting column (202) is fixedly connected to a connecting plate (209), and the outer side of the connecting plate (209) is fixedly connected to a pull ring (210).

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