Gas pumping and exhausting system for foaming chamber

Abstract

The utility model discloses a gas pumping and exhausting system for a foaming chamber. The gas pumping and exhausting system comprises a workbench, a sealing mechanism and a mounting groove, an induced draft fan is fixedly connected to the upper surface of the workbench, and an exhaust mounting frame is mounted behind the induced draft fan in a matched manner; the sealing mechanism is arranged at the front end of the inner wall of the exhaust mounting frame; the gas backflow prevention mechanism is arranged at the rear end of the inner wall of the exhaust mounting frame; the air inlet pipe is fixedly connected to the rear side surface of an air inlet of the induced draft fan; the gas pumping and discharging system for the foaming chamber further comprises a supporting frame, the supporting frame is fixedly connected to the front end of the workbench, the upper surface of the supporting frame is fixedly connected with the lower surface of a motor of the induced draft fan, and the gas pumping and discharging system for the foaming chamber has good sealing performance in the working process, can avoid gas leakage, and improves the working efficiency. And meanwhile, safety accidents caused by gas suck-back can be avoided in the working process, so that the safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of rock wool board production, in particular to a gas extraction system for a foaming chamber. Background Art

[0002] Rock wool board is an inorganic fiber board made of basalt as the main raw material and processed by high-temperature melting. In the production process of rock wool board, the rock wool board needs to be placed in the foaming chamber to produce closed pores inside through the foaming agent. The foaming chamber will produce pentane, so a gas extraction system is needed for the foaming chamber;

[0003] Some conventional gas extraction systems for foaming chambers use induced draft fans to extract pentane from the foaming chamber;

[0004] There are some problems, such as the lack of relative sealing measures, which easily leads to the leakage of pentane at the connection between the induced draft fan and the foaming chamber, and the lack of countermeasures for the back suction of air flow. For this reason, we propose a gas extraction system for the foaming chamber. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a gas extraction system for a foaming chamber, which has a sealing effect and can prevent air flow from being sucked back, thereby effectively solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas extraction system for a foaming chamber, comprising a workbench, a sealing mechanism and a mounting groove;

[0007] Workbench: The upper surface of the workbench is fixedly connected with an induced draft fan, and an exhaust mounting frame is installed behind the induced draft fan;

[0008] Sealing mechanism: It is arranged at the front end of the inner wall of the exhaust mounting frame;

[0009] Gas backflow prevention mechanism: it is arranged at the rear end of the inner wall of the exhaust mounting frame;

[0010] Wherein: it also includes an air inlet pipe, which is fixedly connected to the rear side of the air inlet of the induced draft fan;

[0011] Among them: it also includes a support frame, which is fixedly connected to the front end of the workbench, and the upper surface of the support frame is fixedly connected to the lower surface of the motor of the induced draft fan. It has good sealing performance during the operation process, which can avoid gas leakage. At the same time, it can avoid safety accidents caused by gas backflow during the operation process, making it safer.

[0012] Furthermore, a control switch group is fixedly connected to the right side of the workbench, the input end of the control switch group is electrically connected to the external power supply, and the output end of the control switch group is electrically connected to the input end of the induced draft fan, which can control the operation of the equipment and provide power for the operation of the equipment.

[0013] Furthermore, the sealing mechanism includes a sealing ring and a rubber sealing pad. The sealing ring is fixedly connected to the rear end outer surface of the air inlet duct. A slot is provided at the front end of the inner wall of the exhaust mounting frame. A rubber sealing pad is fixedly connected to the inside of the slot. The rubber sealing pad is installed in coordination with the sealing ring and has good sealing performance after connection.

[0014] Furthermore, the sealing mechanism also includes a connecting head and a bracket, the connecting head is fixedly connected to the rear side of the air inlet duct, the air inlet duct is connected to the connecting head, and the front end of the exhaust mounting frame is fixedly connected to the bracket, and the bracket is installed in coordination with the connecting head to facilitate quick insertion.

[0015] Furthermore, the anti-gas backflow mechanism includes an installation groove, a guide column, a rotating shaft and a wind shield plate. The installation groove is symmetrically opened at the front end of the inner wall of the exhaust mounting frame. The opposite wall surfaces of the installation groove are rotatably connected to the guide columns, the proximal ends of the guide columns are fixedly connected to the rotating shaft, and the wind shield plate is fixedly connected between the proximal ends of the rotating shaft, and the backflow prevention is performed by rotating the wind shield plate.

[0016] Furthermore, the anti-gas backflow mechanism also includes a torsion spring, and the opposite wall surfaces of the mounting groove are fixedly connected with a torsion spring, and the end of the torsion spring close to the wind shield is fixedly connected to the adjacent end of the adjacent rotating shaft, and the interior of the torsion spring is movably mounted on the outer surface of the guide column on the same side to facilitate quick resetting.

[0017] Furthermore, the gas backflow prevention mechanism also includes a limit frame, which is fixedly connected to the rear end of the inner wall of the exhaust mounting frame, and the limit frame is installed in cooperation with the wind shield to limit the rotation angle of the wind shield.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the gas extraction system for the foaming chamber has the following advantages:

[0019] 1. When in use, the exhaust mounting frame is fixedly installed inside the foaming chamber. Before work, the staff first inserts the air inlet pipe into the air inlet of the exhaust mounting frame, so that the connecting head is inserted into the inside of the plug-in frame. In this process, the sealing ring contacts the rubber sealing pad, and the arc surface of the sealing ring lifts and presses the rubber sealing pad tightly inside the slot. The rubber sealing pad and the sealing ring fill the gap between the rubber sealing ring under the elastic potential energy of the rubber sealing pad. In this way, the air duct can be quickly connected to the exhaust mounting frame, and sealing treatment can be performed at the same time to prevent pentane leakage during the exhaust process from causing poisoning of personnel, making work safer.

[0020] 2. Start the induced draft fan by controlling the switch group. The air inlet of the induced draft fan generates suction on the inside of the exhaust mounting frame through the air inlet pipe. The exhaust mounting frame extracts the pentane in the foaming chamber and discharges it through the air outlet of the induced draft fan. During the exhaust process, the induced draft fan generates suction, causing the airflow to flow in the wind direction of the induced draft fan. The airflow generates a forward thrust on the wind shield, causing the wind shield to rotate forward. The rotation of the wind shield drives the rotation of the shaft, and the rotation of the shaft drives the guide column to rotate. The rotation of the shaft drives the torsion spring to deform until the wind shield contacts the limit frame, thereby the wind shield tilts to not affect the exhaust work. When the internal and external pressures change or the staff makes an operational error and causes backdraft, the airflow pushes the wind shield to rotate backward. The wind shield rotates backward until it contacts the limit frame. The wind shield blocks the gas flow until the airflow disappears and is reset under the elastic potential energy of the torsion spring. This prevents gas backflow, makes the extraction and exhaust of pentane safer, and avoids safety incidents caused by gas failure during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the partial cross-sectional structure of the left side of the front end of the utility model;

[0023] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the rear side of the utility model.

[0024] In the figure: 1 workbench, 2 control switch group, 3 induced draft fan, 4 support frame, 5 air inlet duct, 6 exhaust air mounting frame, 7 sealing mechanism, 71 sealing ring, 72 connector, 73 rubber sealing pad, 74 plug-in frame, 8 gas backflow prevention mechanism, 81 mounting groove, 82 guide column, 83 rotating shaft, 84 wind shield, 85 torsion spring, 86 limit frame. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-3 , this embodiment provides a technical solution: a gas extraction system for a foaming chamber, comprising a workbench 1, a sealing mechanism 7 and a mounting groove 81;

[0027] Workbench 1: The upper surface of the workbench is fixedly connected with an induced draft fan 3, and an exhaust mounting frame 6 is installed behind the induced draft fan 3. The right side of the workbench 1 is fixedly connected with a control switch group 2, and the input end of the control switch group 2 is electrically connected to an external power supply, and the output end of the control switch group 2 is electrically connected to the input end of the induced draft fan 3;

[0028] Sealing mechanism 7: It is arranged at the front end of the inner wall of the exhaust mounting frame 6. The sealing mechanism 7 includes a sealing ring 71 and a rubber sealing pad 73. The sealing ring 71 is fixedly connected to the rear end outer surface of the air inlet pipe 5. A slot is provided at the front end of the inner wall of the exhaust mounting frame 6. The inside of the slot is fixedly connected with a rubber sealing pad 73. The rubber sealing pad 73 is installed in cooperation with the sealing ring 71. The sealing mechanism 7 also includes a connector 72 and a bracket 74. The connector 72 is fixedly connected to the rear side of the air inlet pipe 5. The air inlet pipe 5 is communicated with the connector 72. The front end of the exhaust mounting frame 6 is fixedly connected with a bracket 74. The bracket 74 is installed in cooperation with the connector 72. When the exhaust mounting frame is in use, The mounting frame 6 is fixedly installed inside the foaming chamber. Before work, the staff first inserts the air inlet pipe 5 into the air inlet of the exhaust mounting frame 6, so that the connector 72 is inserted into the inside of the inserting frame 74. In this process, the sealing ring 71 contacts the rubber sealing pad 73, and the arc surface of the sealing ring 71 lifts the rubber sealing pad 73 and presses it tightly inside the slot. The rubber sealing pad 73 and the sealing ring 71 fill the gap between the rubber sealing pad 73 and the sealing ring 71 under the elastic potential energy of the rubber sealing pad 73, thereby quickly connecting the air duct 5 to the exhaust mounting frame 6, and at the same time, a sealing treatment can be performed to prevent pentane leakage during the exhaust process from causing poisoning of personnel, making work safer;

[0029] Gas backflow prevention mechanism 8: It is arranged at the rear end of the inner wall of the exhaust mounting frame 6. The gas backflow prevention mechanism 8 includes a mounting groove 81, a guide column 82, a rotating shaft 83 and a windshield 84. The mounting groove 81 is symmetrically opened at the front end of the inner wall of the exhaust mounting frame 6. The opposite wall surfaces of the mounting groove 81 are rotatably connected with the guide column 82. The proximal ends of the guide column 82 are fixedly connected with the rotating shaft 83. The proximal ends of the rotating shaft 83 are fixedly connected with the windshield 84. The gas backflow prevention mechanism 8 also includes a torsion spring 85. The opposite wall surfaces of the mounting groove 81 are fixedly connected with torsion springs 85, and the ends of the torsion springs 85 close to the wind shield 84 are fixedly connected to the adjacent ends of the adjacent rotating shafts 83. The interiors of the torsion springs 85 are movably sleeved with the outer surfaces of the guide columns 82 on the same side. The anti-gas backflow mechanism 8 also includes a limit frame 86, which is fixedly connected to the rear end of the inner wall of the exhaust mounting frame 6. The limit frame 86 is installed in conjunction with the wind shield 84. The induced draft fan 3 is started by controlling the switch group 2, and the air inlet of the induced draft fan 3 is connected through the air inlet pipe. 5 generates suction force inside the exhaust mounting frame 6, and the exhaust mounting frame 6 extracts the pentane in the foaming chamber and discharges it through the air outlet of the induced draft fan 3. During the exhaust process, the induced draft fan 3 generates suction force to cause the airflow to flow in the wind direction of the induced draft fan 3, and the airflow generates a forward thrust on the wind shield 84, so that the wind shield 84 rotates forward, and the rotation of the wind shield 84 drives the rotation shaft 83 to rotate, and the rotation of the rotation shaft 83 drives the guide column 82 to rotate, and the rotation of the rotation shaft 83 drives the torsion spring 85 to deform until the wind shield 84 and the limit The windshield 84 is in contact with the limit frame 86, so that the windshield 84 is tilted to not affect the exhaust work. When the internal and external pressures change or the operator makes an operational error and causes backdraft, the airflow pushes the windshield 84 to rotate backwards. The windshield 84 rotates backwards until it contacts the limit frame 86. The windshield 84 blocks the gas flow until the airflow disappears and resets under the elastic potential energy of the torsion spring 85. This can prevent the gas from flowing back, making the pentane extraction work safer and avoiding safety incidents caused by gas failure during work.

[0030] Wherein: it also includes an air inlet pipe 5, which is fixedly connected to the rear side of the air inlet of the induced draft fan 3;

[0031] Among them, it also includes a support frame 4, which is fixedly connected to the front end of the workbench 1, and the upper surface of the support frame 4 is fixedly connected to the lower surface of the motor of the induced draft fan 3.

[0032] The working principle of the gas extraction system for a foaming chamber provided by the utility model is as follows: when in use, the exhaust mounting bracket 6 is fixedly installed inside the foaming chamber. Before work, the staff first inserts the air inlet pipe 5 into the air inlet of the exhaust mounting bracket 6, so that the connecting head 72 is inserted into the interior of the inserting bracket 74. During this process, the sealing ring 71 contacts the rubber sealing pad 73, and the arc surface of the sealing ring 71 lifts and presses the rubber sealing pad 73 tightly against the inside of the slot. The rubber sealing pad 73 and the sealing ring 71 fill the gap between the sealing ring 71 under the elastic potential energy of the rubber sealing pad 73. In this way, the air duct 5 can be quickly connected to the exhaust mounting bracket 6, and at the same time, a sealing treatment can be performed to prevent pentane leakage during the exhaust process from causing poisoning to personnel, making it safer during work. Then the staff starts the induced draft fan 3 by controlling the switch group 2. The air inlet of the induced draft fan 3 generates suction to the inside of the exhaust mounting bracket 6 through the air inlet pipe 5. The exhaust mounting bracket 6 The pentane in the foaming chamber is extracted and discharged through the air outlet of the induced draft fan 3. During the extraction process, the induced draft fan 3 generates suction force to cause the air flow to flow in the wind direction of the induced draft fan 3. The air flow generates a forward thrust on the wind shield 84, causing the wind shield 84 to rotate forward. The rotation of the wind shield 84 drives the rotating shaft 83 to rotate. The rotation of the rotating shaft 83 drives the guide column 82 to rotate. The rotation of the rotating shaft 83 drives the torsion spring 85 to deform until the wind shield 84 contacts the limit frame 86. As a result, the wind shield 84 is tilted to not affect the extraction work. When the internal and external pressures change or the staff makes an operational error and causes backdraft, the air flow pushes the wind shield 84 to rotate backward. The wind shield 84 rotates backward until it contacts the limit frame 86. The wind shield 84 blocks the gas flow until the air flow disappears and resets under the elastic potential energy of the torsion spring 85. This can prevent the gas from flowing back, making the extraction and exhaust of pentane safer and avoiding safety incidents caused by gas failure during work.

[0033] It is worth noting that the induced draft fan 3 disclosed in the above embodiments can be a 4-72 centrifugal fan, and the control switch group 2 is provided with a control button corresponding to the induced draft fan 3 and used to control the switch thereof.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gas extraction system for a foaming chamber, characterized in that: It comprises a workbench (1), a sealing mechanism (7) and a mounting groove (81); A workbench (1): an induced draft fan (3) is fixedly connected to its upper surface, and an exhaust mounting frame (6) is mounted behind the induced draft fan (3); Sealing mechanism (7): it is arranged at the front end of the inner wall of the exhaust mounting frame (6); Gas backflow prevention mechanism (8): arranged at the rear end of the inner wall of the exhaust mounting frame (6); Wherein: it also includes an air inlet pipe (5), wherein the air inlet pipe (5) is fixedly connected to the rear side of the air inlet of the induced draft fan (3); Wherein: it also includes a support frame (4), the support frame (4) is fixedly connected to the front end of the workbench (1), and the upper surface of the support frame (4) is fixedly connected to the lower surface of the motor of the induced draft fan (3).

2. A gas extraction system for a foaming chamber according to claim 1, characterized in that: A control switch group (2) is fixedly connected to the right side of the workbench (1); an input end of the control switch group (2) is electrically connected to an external power supply, and an output end of the control switch group (2) is electrically connected to an input end of the induced draft fan (3).

3. A gas extraction system for a foaming chamber according to claim 1, characterized in that: The sealing mechanism (7) comprises a sealing ring (71) and a rubber sealing pad (73); the sealing ring (71) is fixedly connected to the rear end outer surface of the air inlet pipe (5); a slot is provided at the front end of the inner wall of the exhaust mounting frame (6); the interior of the slot is fixedly connected to the rubber sealing pad (73); the rubber sealing pad (73) and the sealing ring (71) are mounted in coordination.

4. A gas extraction system for a foaming chamber according to claim 1, characterized in that: The sealing mechanism (7) further comprises a connecting head (72) and a plug-in bracket (74); the connecting head (72) is fixedly connected to the rear side of the air inlet pipe (5); the air inlet pipe (5) is in communication with the connecting head (72); the front end of the exhaust mounting bracket (6) is fixedly connected to the plug-in bracket (74); the plug-in bracket (74) and the connecting head (72) are mounted in coordination.

5. A gas extraction system for a foaming chamber according to claim 1, characterized in that: The gas backflow prevention mechanism (8) comprises a mounting groove (81), a guide column (82), a rotating shaft (83) and a wind shield (84); the mounting groove (81) is symmetrically disposed at the front end of the inner wall of the exhaust mounting frame (6); opposite wall surfaces of the mounting groove (81) are rotatably connected to the guide column (82); adjacent ends of the guide column (82) are fixedly connected to the rotating shaft (83); and adjacent ends of the rotating shaft (83) are fixedly connected to the wind shield (84).

6. A gas extraction system for a foaming chamber according to claim 5, characterized in that: The gas backflow prevention mechanism (8) further comprises a torsion spring (85), and opposite wall surfaces of the mounting groove (81) are fixedly connected to the torsion spring (85), one end of the torsion spring (85) close to the wind shield (84) is fixedly connected to the adjacent end of the adjacent rotating shaft (83), and the interior of the torsion spring (85) is movably sleeved with the outer surface of the guide column (82) on the same side.

7. A gas extraction system for a foaming chamber according to claim 1, characterized in that: The gas backflow prevention mechanism (8) further comprises a limiting frame (86), wherein the limiting frame (86) is fixedly connected to the rear end of the inner wall of the exhaust mounting frame (6), and the limiting frame (86) is mounted in cooperation with the wind shield (84).

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