Air draft structure and powder spraying room

Abstract

The air draft structure comprises the powder spraying room, an air draft assembly is arranged at the top of the powder spraying room, a filter cylinder is arranged in the powder spraying room, a connecting ring is fixedly connected to the inner wall of the top end of the powder spraying room, first threads are formed in the inner wall of the bottom of the connecting ring, and a threaded ring is fixedly connected to the top end of the filter cylinder. The threaded ring is inserted and connected into the first thread, a sealing groove is formed in the bottom end of the connecting ring, and a first sealing ring used for sealing the joint of the filter cartridge and the connecting ring is inserted and connected into the sealing groove. Through the design of the threaded ring, the first thread, the sealing groove, the first sealing ring and the second sealing ring, when the filter cartridge needs to be fixedly connected to the bottom of the connecting ring, the threaded ring at the top of the filter cartridge is connected into the first thread in a threaded penetrating manner; and the joint of the threaded ring and the first thread is sealed through the first sealing ring and the second sealing ring, so that loose powder is prevented from entering the joint of the threaded ring and the first thread.

Description

Technical Field

[0001] The utility model relates to the technical field of powder spraying booths, and particularly relates to an air extraction structure and a powder spraying booth. Background Technique

[0002] A powder spraying booth is a workplace for spraying powder coatings, also known as a powder coating workshop. When the powder spraying booth is in use, in order to keep the internal air flowing and avoid dust diffusion and dispersion, an air extraction structure will be installed inside the powder spraying booth to collect the dust continuously.

[0003] In order to collect the scattered powder, a filter cartridge for blocking the scattered powder from entering will be fixed to the front end of the air extraction structure by bolts. The scattered powder is adsorbed and collected through the filter cartridge. After the filter cartridge is used for a long time, there is a situation where the mesh holes on the filter cartridge are blocked and need to be maintained and replaced. When the filter cartridge fixed by bolts is in use, scattered powder flying into the connection between the bolts and the filter cartridge affects the stability and reliability of the connection. Content of the Utility Model

[0004] The purpose of the utility model is to provide an air extraction structure and a powder spraying booth to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an air extraction structure, including a powder spraying booth, an air suction component is arranged at the top of the powder spraying booth, a filter cartridge is arranged inside the powder spraying booth, a connecting ring is fixedly connected to the inner wall of the top end of the powder spraying booth, a first thread is opened on the inner wall of the bottom of the connecting ring, the top end of the filter cartridge is fixedly connected with a threaded ring, the threaded ring is inserted and connected inside the first thread, a sealing groove is opened at the bottom end of the connecting ring, a first sealing ring for sealing the connection between the filter cartridge and the connecting ring is inserted and connected inside the sealing groove, a second sealing ring is arranged at the top end of the threaded ring, and a fixing part for fixing the position of the second sealing ring is arranged inside the threaded ring.

[0006] Preferably, the air suction component includes an air outlet pipe fixedly connected to the top end of the powder spraying booth, a negative pressure fan is inserted and connected inside the air outlet pipe, a ventilation hole is opened at the top end of the powder spraying booth, and the ventilation hole is mutually communicated with the air outlet pipe and the connecting ring.

[0007] Preferably, a limiting part for restricting the movement of the first sealing ring is arranged at the connection between the filter cartridge and the first sealing ring. The limiting part includes a fixing ring inserted and connected at the bottom end of the first sealing ring, a positioning groove is opened at the bottom end of the fixing ring, and a positioning ring is fixedly connected to the top end of the filter cartridge, and the positioning ring is inserted and connected inside the positioning groove.

[0008] Preferably, the first sealing ring is sleeved at the bottom of the threaded ring.

[0009] Preferably, the fixing member includes a pressing ring fixedly connected to the inner wall of the middle part of the connecting ring, and the second sealing ring is fixedly connected to the bottom end of the pressing ring.

[0010] Preferably, a filter screen is inserted through the top of the threaded ring, a limiting ring is fixedly connected to the top end of the filter screen, and the limiting ring is arranged on the opposite side of the pressing ring and the threaded ring.

[0011] A powder spraying booth, which includes the air extraction structure described in any one of the above.

[0012] The technical effects and advantages of the present invention:

[0013] Through the design of the threaded ring, the first thread, the sealing groove, the first sealing ring and the second sealing ring, when it is necessary to fixedly connect the filter cartridge to the bottom of the connecting ring, the threaded ring at the top of the filter cartridge is threadedly inserted into the inside of the first thread, and the connection between the threaded ring and the first thread is sealed by the first sealing ring and the second sealing ring, preventing scattered powder from entering the connection between the threaded ring and the first thread. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0015] Figure 2 It is a front sectional structural schematic diagram of the present invention.

[0016] Figure 3 For the present invention Figure 2 The enlarged structural schematic diagram of part A in.

[0017] In the figure: 1. Powder spraying booth; 2. Filter cartridge; 3. Connecting ring; 4. Threaded ring; 5. First thread; 6. Sealing groove; 7. First sealing ring; 8. Air outlet pipe; 9. Negative pressure fan; 10. Fixed ring; 11. Positioning ring; 12. Filter screen; 13. Limiting ring; 14. Pressing ring; 15. Second sealing ring. Specific Embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] The present invention provides as Figures 1-3An exhaust structure as shown includes a powder spraying booth 1. An air suction component is arranged at the top of the powder spraying booth 1. A filter cartridge 2 is arranged inside the powder spraying booth 1. An inner wall at the top end of the powder spraying booth 1 is fixedly connected with a connecting ring 3. An inner wall at the bottom of the connecting ring 3 is provided with a first thread 5. The top end of the filter cartridge 2 is fixedly connected with a threaded ring 4. The threaded ring 4 is inserted and connected inside the first thread 5. A sealing groove 6 is opened at the bottom end of the connecting ring 3. A first sealing ring 7 for sealing the connection between the filter cartridge 2 and the connecting ring 3 is inserted and connected inside the sealing groove 6. A second sealing ring 15 is arranged at the top end of the threaded ring 4. A fixing member for fixing the position of the second sealing ring 15 is arranged inside the threaded ring 4.

[0020] It should be noted that the provided powder spraying booth 1 is used to place products and spray powder coatings on the products inside the powder spraying booth 1. A filter hole for blocking the powder coating from entering the inside of the filter cartridge 2 is opened in the middle of the provided filter cartridge 2. The diameter of the filter hole is three to five microns. When in use, the powder coating is blocked through the filter hole. The provided first sealing ring 7 and second sealing ring 15 are both made of rubber material. The rubber material has the characteristic of being deformable. After being extruded, the rubber material will deform, so as to seal the connection between the connecting ring 3 and the filter cartridge 2 through the deformation of the first sealing ring 7 and the second sealing ring 15, thereby preventing the powder coating from entering the connection between the connecting ring 3 and the filter cartridge 2.

[0021] Furthermore, when the filter cartridge 2 needs to be fixedly connected to the bottom of the connecting ring 3, the threaded ring 4 at the top of the filter cartridge 2 is threadedly inserted and connected inside the first thread 5, and the connection between the threaded ring 4 and the first thread 5 is sealed through the first sealing ring 7 and the second sealing ring 15, preventing the scattered powder from entering the connection between the threaded ring 4 and the first thread 5.

[0022] Specifically, the air suction component includes an air outlet pipe 8 fixedly connected to the top end of the powder spraying booth 1. A negative pressure fan 9 is inserted and connected inside the air outlet pipe 8. A ventilation hole is opened at the top end of the powder spraying booth 1. The ventilation hole is mutually communicated with the air outlet pipe 8 and the connecting ring 3.

[0023] It should be noted that the negative pressure fan 9 extracts gas from the powder spraying booth 1 by generating negative pressure. When the gas passes through the filter cartridge 2, the powder coating is blocked through the filter holes on the filter cartridge 2, and then the gas is discharged through the filter cartridge 2, the connecting ring 3, the ventilation hole and the air outlet pipe 8.

[0024] Specifically, a limiting member for restricting the movement of the first sealing ring 7 is arranged at the connection between the filter cartridge 2 and the first sealing ring 7. The limiting member includes a fixing ring 10 inserted and connected to the bottom end of the first sealing ring 7. A positioning groove is opened at the bottom end of the fixing ring 10. A positioning ring 11 is fixedly connected to the top end of the filter cartridge 2. The positioning ring 11 is inserted and connected inside the positioning groove.

[0025] It should be noted that the fixed ring 10 is provided to limit the deformation of the first sealing ring 7, so as to avoid the first sealing ring 7 being directly deformed when the first sealing ring 7 is directly picked up, thereby causing the first sealing ring 7 to need to be repeatedly adjusted in shape when it is sleeved on the threaded ring 4. The positioning ring 11 is provided to limit the random shaking of the fixed ring 10, so as to limit the first sealing ring 7 through the fixed ring 10.

[0026] Specifically, the first sealing ring 7 is sleeved on the bottom of the threaded ring 4 .

[0027] Specifically, the fixing member includes an extrusion ring 14 fixedly connected to the inner wall of the middle portion of the connecting ring 3 , and the second sealing ring 15 is fixedly connected to the bottom end of the extrusion ring 14 .

[0028] It should be noted that the extrusion ring 14 is fixedly connected to the inside of the middle part of the connecting ring 3 , and the position of the second sealing ring 15 is fixed by the extrusion ring 14 in a fixed position.

[0029] Specifically, a filter screen 12 is inserted and connected to the top of the threaded ring 4 , and a limiting ring 13 is fixedly connected to the top of the filter screen 12 . The limiting ring 13 is arranged on a side opposite to the extrusion ring 14 and the threaded ring 4 .

[0030] It should be noted that the filter screen 12 is provided with filter holes with a pore size of two to three microns. When in use, the powder coating in the gas is secondary blocked by the filter screen 12, thereby preventing the powder coating from being discharged through the air outlet pipe 8. When the position of the filter screen 12 needs to be fixed, the filter screen 12 is first inserted into the top of the threaded ring 4, so that the limiting ring 13 on the top of the filter screen 12 fits with the top of the threaded ring 4, and then the position of the threaded ring 4 is moved, and the limiting ring 13 is clamped and fixed by the threaded ring 4 and the extrusion ring 14.

[0031] A powder spraying room includes any one of the exhaust structures.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust structure, comprising a powder spraying room (1), characterized in that: The top of the powder spraying room (1) is provided with an air suction assembly, the interior of the powder spraying room (1) is provided with a filter cartridge (2), the inner wall of the top of the powder spraying room (1) is fixedly connected with a connecting ring (3), the inner wall of the bottom of the connecting ring (3) is provided with a first thread (5), the top of the filter cartridge (2) is fixedly connected with a threaded ring (4), the threaded ring (4) is inserted and connected inside the first thread (5), the bottom of the connecting ring (3) is provided with a sealing groove (6), the inside of the sealing groove (6) is inserted and connected with a first sealing ring (7) for sealing the connection between the filter cartridge (2) and the connecting ring (3), the top of the threaded ring (4) is provided with a second sealing ring (15), and the inside of the threaded ring (4) is provided with a fixing member for fixing the position of the second sealing ring (15).

2. The ventilation structure according to claim 1, characterized in that: The air suction assembly comprises an air outlet pipe (8) fixedly connected to the top of the powder spraying room (1), a negative pressure fan (9) is inserted into the interior of the air outlet pipe (8), and a ventilation hole is opened at the top of the powder spraying room (1), and the ventilation hole is mutually connected with the air outlet pipe (8) and the connecting ring (3).

3. The ventilation structure according to claim 1, characterized in that: A limiting member for limiting the movement of the first sealing ring (7) is provided at the connection between the filter cartridge (2) and the first sealing ring (7), the limiting member comprising a fixing ring (10) inserted and connected to the bottom end of the first sealing ring (7), a positioning groove being provided at the bottom end of the fixing ring (10), and a positioning ring (11) being fixedly connected to the top end of the filter cartridge (2), the positioning ring (11) being inserted and connected inside the positioning groove.

4. The ventilation structure according to claim 1, characterized in that: The first sealing ring (7) is sleeved on the bottom of the threaded ring (4).

5. The ventilation structure according to claim 1, characterized in that: The fixing member comprises an extrusion ring (14) fixedly connected to the inner wall of the middle part of the connection ring (3), and the second sealing ring (15) is fixedly connected to the bottom end of the extrusion ring (14).

6. The ventilation structure according to claim 1, characterized in that: A filter screen (12) is inserted and connected to the top of the threaded ring (4), and a limiting ring (13) is fixedly connected to the top of the filter screen (12). The limiting ring (13) is arranged on the side opposite to the extrusion ring (14) and the threaded ring (4).

7. A powder spraying room, characterized in that: The powder spraying room comprises the exhaust structure according to any one of claims 1 to 6.

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