Gas recovery device for discharge port of polyurethane reaction kettle

Abstract

The utility model discloses a gas recovery device for a discharge port of a polyurethane reaction kettle, and belongs to the technical field of gas recovery. Comprising an induced draft fan, the input end of the induced draft fan is communicated with a main air guide pipe, a dissolving tank is arranged on one side of the induced draft fan, a partition plate is fixedly connected to the middle of the inner wall of the dissolving tank and divides an inner cavity of the dissolving tank into two independent cavities, and a conveying part is arranged between the main air guide pipe and the dissolving tank. The conveying part comprises two conveying pipelines communicated with one end of the air guide main pipe, movable spraying pipes are arranged on the two sides of an inner cavity of the dissolving tank, and a plurality of spraying holes are formed in the surfaces of the movable spraying pipes. By arranging the conveying piece and the partition plate, the dissolving tank is internally provided with two independent dissolving areas, and when one dissolving area stops working due to failure, maintenance or treatment capacity saturation and by utilizing the conveying pipelines dispersed in the two dissolving areas and the valves on the conveying pipelines, the other area can still continue to receive and treat waste gas.

Description

TECHNICAL FIELD

[0001] The application relates to the gas recovery technical field, in particular to a polyurethane reaction kettle discharge port gas recovery device. BACKGROUND

[0002] The polyurethane reaction kettle discharge port gas recovery device is a device specially designed for recovering and treating harmful gas generated in the discharging process of a polyurethane reaction kettle, and the main purpose of the device is to reduce the volatilization of harmful gas in the packaging process of materials, reduce the harm to production personnel and pollution to the environment, and recover part of valuable gas and save resources.

[0003] In the related art, in order to solve the problem that waste gas is directly released into the atmosphere without treatment, causing serious pollution to the environment, for example, the prior art with the publication number CN218307831U provides a polyurethane reaction kettle discharge port DMF gas recovery device, which is used when the material from the reaction kettle body enters the gas recovery cylinder through the feeding pipe, the polyurethane part in the material falls into the packaging barrel, the DMF gas is sucked into the gas recovery pipe by the Roots blower, then is discharged from the gas distribution pipe through the gas transportation pipe, and is contacted with the water in the dissolving pool and is dissolved and absorbed by the water, which can reduce the harm to production personnel and pollution to the environment caused by the volatilization of DMF gas in the packaging process of materials, and can recover part of DMF and save resources.

[0004] Although the prior art in the above can achieve the effect of waste gas recovery by setting the Roots blower, the gas recovery cylinder and the dissolving pool, the waste gas overflowing from the polyurethane reaction kettle discharge port is transported to the dissolving pool through the Roots blower and the pipeline for dissolving, and the dissolving pool is usually provided with only one, which means that the gas treatment system lacks redundancy and backup, and once the dissolving pool fails or needs maintenance, the whole waste gas treatment system will stop working, affecting the production progress and waste gas emission control, and when the waste gas is continuously discharged to a certain position in the dissolving pool through the pipeline, local overload and uneven dissolving efficiency will occur, thereby affecting the waste gas treatment effect.

[0005] In view of this, we propose a polyurethane reaction kettle discharge port gas recovery device. Content of the utility model

[0006] The application aims to provide a polyurethane reaction kettle discharge port gas recovery device, which can effectively solve the problems of lack of redundancy and backup, and local overload and uneven dissolving efficiency in the prior art.

[0007] The application provides a polyurethane reaction kettle discharge port gas recovery device, which comprises:

[0008] An air induction fan, an air induction main pipe in communication with an input end of the air induction fan;

[0009] A dissolving tank, a partition plate fixedly connected to a middle portion of an inner wall of the dissolving tank, and the partition plate dividing an inner cavity of the dissolving tank into two independent chambers;

[0010] A conveying member, two conveying pipes in communication with one end of the air induction main pipe, and a movable spray pipe provided on each side of the inner cavity of the dissolving tank and having a plurality of spray holes formed on a surface thereof;

[0011] A U-shaped fixing plate, a linkage member and a driving member provided on a surface of the U-shaped fixing plate, and the U-shaped fixing plate fixed to a top end of the partition plate, for improving the dissolving efficiency.

[0012] As an optional solution of the technical scheme of the present application, one end of each of the two conveying pipes extends into the two chambers in the dissolving tank, and a valve is mounted on an end portion of each of the conveying pipes.

[0013] As an optional solution of the technical scheme of the present application, a hose is in communication with one end of the movable spray pipe and in communication with the conveying pipe on the same side.

[0014] As an optional solution of the technical scheme of the present application, a moving hole is formed on each side of the top end of the U-shaped fixing plate, the linkage member includes two fixed blocks fixed to a middle portion of the top end of the U-shaped fixing plate, a reciprocating screw rod is rotatably connected between each of the two fixed blocks and each side of an inner wall of the U-shaped fixing plate, a moving block is threadedly connected to one end portion of each of the reciprocating screw rods, one end of each of the reciprocating screw rods rotatably penetrates a surface of each of the two fixed blocks, and a butt joint block one is fixedly connected to the one end of each of the reciprocating screw rods, and an insertion slot is formed on an outer side of the butt joint block one.

[0015] As an optional solution of the technical scheme of the present application, a fixed ring is fixedly connected to a middle portion of the movable spray pipe, a linkage rod is fixedly connected to a top end of the fixed ring, and the linkage rod penetrates an inner cavity of the moving hole on the same side and is fixedly connected to a bottom end of the moving block on the same side.

[0016] As an optional solution of the technical scheme of the present application, the driving member includes a moving plate slidably connected to a center of the U-shaped fixing plate, and a driving portion is mounted on a top end of the moving plate for providing a driving force when the movable spray pipe moves.

[0017] As an optional solution of the technical scheme of the present application, a butt joint block two is drivingly connected to each of the two output shafts of the driving portion, an insertion block is formed on an outer side of the butt joint block two, and the insertion block is snapingly connected to the insertion slot.

[0018] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0019] The present application provides two independent dissolving areas in the dissolving tank by setting the conveying member and the partition plate. When one of the dissolving areas stops working due to failure, maintenance or saturation of processing capacity, the other area can still receive and process waste gas by using the conveying pipeline and the valve thereon. This design ensures the continuous operation of the waste gas treatment system and effectively avoids the problem of system shutdown caused by the failure of a single dissolving tank, thereby improving the redundancy and backup capability of the waste gas treatment system.

[0020] The present application provides two independent dissolving areas in the dissolving tank by setting the conveying member and the partition plate. When one of the dissolving areas stops working due to failure, maintenance or saturation of processing capacity, the other area can still receive and process waste gas by using the conveying pipeline and the valve thereon. This design ensures the continuous operation of the waste gas treatment system and effectively avoids the problem of system shutdown caused by the failure of a single dissolving tank, thereby improving the redundancy and backup capability of the waste gas treatment system. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The overall structure schematic diagram of the polyurethane reaction kettle discharge port gas recovery device disclosed by a preferred embodiment of the present application is disclosed.

[0022] Figure 2 The rear view structure schematic diagram of the polyurethane reaction kettle discharge port gas recovery device disclosed by a preferred embodiment of the present application is disclosed.

[0023] Figure 3 The dissolving tank sectional view of the polyurethane reaction kettle discharge port gas recovery device disclosed by a preferred embodiment of the present application is disclosed.

[0024] Figure 4 The partial structure schematic diagram of the polyurethane reaction kettle discharge port gas recovery device disclosed by a preferred embodiment of the present application is disclosed.

[0025] Figure 5 The U-shaped fixed plate of the polyurethane reaction kettle discharge port gas recovery device disclosed by a preferred embodiment of the present application and the upper part structure schematic diagram thereof are disclosed.

[0026] Figure 6 The partial structure schematic diagram of the polyurethane reaction kettle discharge port gas recovery device disclosed by a preferred embodiment of the present application is disclosed. Figure 5 The enlarged view of A in the above figure.

[0027] Explanation of reference numerals in the drawing: 1, air blower; 2, air guide main pipe; 3, dissolving tank; 4, partition plate; 5, conveying member; 51, conveying pipe; 52, valve; 53, movable spray pipe; 54, spray hole; 55, hose; 6, U-shaped fixed plate; 7, moving hole; 8, connecting member; 81, fixed block; 82, reciprocating screw rod; 83, moving block; 84, fixed ring; 85, connecting rod; 86, butt joint block I; 87, insertion slot; 9, driving member; 91, moving plate; 92, driving part; 93, butt joint block II; 94, insertion block. DETAILED DESCRIPTION

[0028] The application will be further described in detail below with reference to the accompanying drawings of the specification.

[0029] Reference Figures 1-6 The embodiment of the application discloses a polyurethane reactor discharge port gas recovery device, which comprises an air blower 1 serving as a power source of the whole gas recovery device. The air blower 1 is responsible for sucking waste gas generated at the polyurethane reactor discharge port. The suction end of the air blower 1 is in communication with a gas recovery pipeline of the polyurethane reactor discharge port, which is prior art and will not be described in detail. The waste gas is conveyed to a dissolving tank 3 for subsequent treatment through an air guide main pipe 2 and a conveying member 5. The input end of the air blower 1 is in communication with the air guide main pipe 2.

[0030] The dissolving tank 3 is arranged on one side of the air blower 1. A partition plate 4 is fixedly connected to the middle part of the inner wall of the dissolving tank 3. The partition plate 4 divides the inner cavity of the dissolving tank 3 into two independent cavities.

[0031] The U-shaped fixed plate 6 provides a stable mounting platform for the connecting member 8 and the driving member 9. The U-shaped fixed plate 6 is fixed to the top end of the partition plate 4. The surface of the U-shaped fixed plate 6 is provided with the connecting member 8 and the driving member 9, so as to improve the dissolving efficiency.

[0032] Reference Figures 1-4 The conveying member 5 is arranged between the air guide main pipe 2 and the dissolving tank 3. The conveying member 5 comprises two conveying pipes 51 in communication with one end of the air guide main pipe 2. The two sides of the inner cavity of the dissolving tank 3 are provided with movable spray pipes 53. The surface of the movable spray pipe 53 is provided with a plurality of spray holes 54. One end of each of the two conveying pipes 51 extends into the two cavities in the dissolving tank 3. One end of the conveying pipe 51 is provided with a valve 52 for controlling the flow direction and flow rate of the waste gas. One end of the movable spray pipe 53 is in communication with a hose 55, so that the movable spray pipe 53 can move in the dissolving tank 3. The hose 55 is in communication with the conveying pipe 51 on the same side.

[0033] Reference Figures 1-6The two sides of the top end of the U-shaped fixing plate 6 are provided with moving holes 7. The connecting member 8 includes two fixed blocks 81 fixed to the middle part of the top end of the U-shaped fixing plate 6. The two fixed blocks 81 are rotatably connected with reciprocating lead screws 82 between the two sides of the inner wall of the U-shaped fixing plate 6. One end of the reciprocating lead screw 82 is threadedly connected with a moving block 83. When the reciprocating lead screw 82 rotates, the moving block 83 will drive the movable spray pipe 53 to reciprocate through the connecting rod 85 and the fixed ring 84. One end of the two reciprocating lead screws 82 is rotatably penetrated through the surface of the two fixed blocks 81, and is fixedly connected with an abutting block one 86. The two abutting block ones 86 are symmetrically distributed. The outer side of the abutting block one 86 is provided with a slot 87 in the shape of a cross. The slot 87 is matched with the plug 94 of the driving member 9 to realize the transmission of power. The middle part of the movable spray pipe 53 is fixedly connected with the fixed ring 84. The top end of the fixed ring 84 is fixedly connected with the connecting rod 85. The top end of the connecting rod 85 penetrates through the inner cavity of the same side moving hole 7 and is fixedly connected with the bottom end of the same side moving block 83.

[0034] With reference to Figure 1 , 2 , 3, 5 and 6, the driving member 9 includes a moving plate 91 slidably connected with the center of the U-shaped fixing plate 6. The top end of the moving plate 91 is provided with a driving part 92, which is a double-shaft motor. The double-shaft motor has two output shafts for providing driving force when the movable spray pipe 53 moves. The two output shafts of the driving part 92 are drivingly connected with abutting block twos 93. The outer side of the abutting block two 93 is provided with a plug 94 which is clamped and connected with the slot 87.

[0035] In summary, the polyurethane reactor discharge port gas recovery device disclosed by the embodiments of the present application, in use, the staff first according to the actual demand, selectively close one of the valve 52 on the conveying pipeline 51, set as a standby state, the staff to move the drive part 92, let its on the plug 94 and the slot 87 above the discharge dissolving area butt joint, after completion, when the polyurethane reactor in discharge, induced draft fan 1 can produce the waste gas of polyurethane reactor discharge port through its on the gas recovery pipeline suction, through the air guide main pipe 2, the waste gas is transmitted to the conveying pipeline 51 that has been opened, through the hose 55 and the injection hole 54, the waste gas is discharged to one of the dissolving areas through several injection holes 54, dissolving, at the same time, start the drive part 92, let the reciprocating screw rod 82 on the side rotate, the moving block 83 is through the moving hole 7, the connecting rod 85 and the fixed ring 84 finally drives the movable lance 53 placed in the dissolving area reciprocating left and right, let the waste gas evenly discharged to the dissolving pool, however, when the main dissolving area appears saturation, blockage or other problems, the staff can take action quickly, first through the valve 52 on the conveying pipeline 51 that is communicated with the dissolving area, cut off the supply of waste gas, then, the waste gas is guided to another open conveying pipeline 51, discharge to the standby dissolving area, in order to ensure that the standby dissolving area can work normally, the staff also need to move the position of the drive part 92, let its on the plug 94 and the slot 87 on the standby dissolving area butt joint, power switching, can continue to carry out gas recovery work.

Claims

1. A polyurethane reactor discharge port gas recovery apparatus characterized by: The utility model relates to a kind of air dissipation system, including: air dissipation fan (1), the input end of the air dissipation fan (1) is communicated with air guide main pipe (2);Dissolution pool (3) is placed in one side of air dissipation fan (1), the middle part of inner wall of the dissolution pool (3) is fixedly connected with partition plate (4), and the inner chamber of the dissolution pool (3) is divided into two independent chambers by the partition plate (4);Conveying part (5) is placed between air guide main pipe (2) and dissolution pool (3), and the conveying part (5) includes two conveying pipes (51) with one end of air guide main pipe (2) being communicated, and the two sides of the inner chamber of dissolution pool (3) are provided with movable lance (53), and the surface of the movable lance (53) is provided with a plurality of spray holes (54);U-shaped fixed plate (6) is fixed to the top of partition plate (4), and the surface of the U-shaped fixed plate (6) is provided with linkage (8) and driving part (9), to improve the dissolution efficiency. One end of the two conveying pipes (51) extends to the two chambers in the dissolution pool (3) respectively, and a valve (52) is installed at one end of the conveying pipe (51). One end of the movable lance (53) is communicated with a hose (55), and the hose (55) is communicated with the conveying pipe (51) on the same side. The two sides of the top of the U-shaped fixed plate (6) are provided with moving holes (7), the linkage (8) includes two fixed blocks (81) fixed to the middle part of the top of the U-shaped fixed plate (6), a reciprocating screw rod (82) is rotatably connected between the two sides of the inner wall of the U-shaped fixed plate (6) and the two fixed blocks (81), one end of the reciprocating screw rod (82) is threadedly connected with a moving block (83), one end of the reciprocating screw rod (82) rotatably penetrates the surface of the two fixed blocks (81) respectively, and a butt block I (86) is fixedly connected, and a slot (87) is formed in the outer side of the butt block I (86). The middle part of the movable lance (53) is fixedly connected with a fixed ring (84), the top of the fixed ring (84) is fixedly connected with a linkage rod (85), and the top of the linkage rod (85) penetrates the inner chamber of the moving hole (7) on the same side and is fixedly connected with the bottom of the moving block (83) on the same side.

2. The polyurethane reactor vent gas recovery apparatus of claim 1, wherein: The driving part (9) includes a moving plate (91) slidably connected with the center of the U-shaped fixed plate (6), and a driving part (92) is installed at the top of the moving plate (91) to provide driving force when the movable lance (53) moves.

3. The polyurethane reactor vent gas recovery apparatus of claim 1, wherein: The two output shafts of the driving part (92) are drivingly connected with a butt block II (93), a plug (94) is formed in the outer side of the butt block II (93), and the plug (94) is clampedly connected with the slot (87).

4. The polyurethane reactor vent gas recovery apparatus of claim 1, wherein: ​ 5. The polyurethane reactor vent gas recovery apparatus of claim 1, wherein: ​ 6. The polyurethane reactor vent gas recovery apparatus of claim 1, wherein: ​ 7. The polyurethane reactor vent gas recovery apparatus of claim 6, wherein: ​

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