Center pipeline air draft structure of furniture electrostatic powder spraying chamber

Abstract

The utility model discloses an air draft structure for a central pipeline of a furniture electrostatic powder spraying chamber in the technical field of air draft structures, which comprises a cleaning mechanism, the cleaning mechanism comprises an air draft pipe, an air draft fan is arranged in the air outlet end of the air draft pipe, a scraping and sweeping piece is arranged at the inner top of the air draft pipe, and the scraping and sweeping piece is in sliding fit with the outer wall of the air inlet end of the air draft fan; the collecting mechanism comprises a collecting box, the collecting box is fixedly arranged at the bottom of the exhaust pipe, a blanking port is formed in the exhaust pipe, the exhaust pipe is communicated with the collecting box through the blanking port, a sealing plate is hinged to the interior of the blanking port, a water collecting tank is arranged on the outer wall of the collecting box, and a cam part is rotationally arranged in the water collecting tank; when powder on the exhaust fan needs to be cleaned, the powder on the exhaust fan is downwards scraped and swept through the scraping and sweeping piece, and the scraping and sweeping piece pushes the sealing plate to deflect so as to enable the discharging opening to be opened, so that the powder is promoted to fall into the collecting box, and the powder in the exhaust pipe is more convenient to clean.

Description

Technical Field

[0001] This utility model relates to the field of ventilation structure technology, and in particular to a central duct ventilation structure for a furniture electrostatic powder coating chamber. Background Technology

[0002] The powder coating process for furniture needs to be carried out in a relatively enclosed electrostatic powder coating chamber. Generally, an electrostatic powder coating chamber consists of a top wall, outer side walls, and a bottom wall. During powder coating, the powder that is not coated onto the workpiece falls back to the bottom due to its own gravity. Usually, an exhaust pipe is installed on the bottom wall, and an exhaust fan is connected to the exhaust pipe. The exhaust fan generates negative pressure and then extracts the unused powder through the exhaust pipe, so that it can be recycled.

[0003] The existing patent (publication number: CN219168739U) discloses a central duct exhaust structure for an electrostatic powder spraying chamber. The chamber is constructed from a top wall, side walls, and a bottom wall, forming the powder spraying cavity. A suction port is formed in the center of the bottom wall, with an exhaust pipe at the bottom. An exhaust fan is configured to create a negative pressure airflow through the exhaust pipe at the suction port. During the exhaust process, the moving parts are constantly held in place to cover the top and sides of the exhaust pipe, reducing powder accumulation on the top and sides of the exhaust pipe and facilitating cleaning. However, this technical solution still has shortcomings, specifically as follows:

[0004] During operation, powder accumulates inside the exhaust duct of this device, requiring the operator to periodically clean it. This cleaning necessitates opening the exhaust duct, making the process cumbersome. To address this issue, we propose a central duct exhaust structure for a furniture electrostatic powder coating chamber to resolve these problems. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a central duct exhaust structure for a furniture electrostatic powder spraying chamber, which can solve the problem that existing devices accumulate powder in the exhaust duct during use, requiring operators to clean the powder in the exhaust duct regularly. At this time, the operator needs to open the exhaust duct to clean it, which makes cleaning the dust in the exhaust duct quite troublesome.

[0007] To solve the above technical problems, this utility model provides a central duct exhaust structure for a furniture electrostatic powder coating chamber, which adopts the following technical solution: it includes a cleaning mechanism, which includes an exhaust pipe, an exhaust fan is installed in the exhaust pipe's outlet end, and a scraper is installed at the top inner end of the exhaust pipe, with the scraper slidingly engaging with the outer wall of the exhaust fan's inlet end.

[0008] A collection mechanism includes a collection box fixedly installed at the bottom of an exhaust pipe. The exhaust pipe has a discharge port connected to the collection box via the discharge port. A sealing plate is hinged inside the discharge port. A water collection tank is installed on the outer wall of the collection box. A cam is rotatably installed inside the water collection tank. A piston is movably installed on the inner wall of the water collection tank, with its upper end slidingly engaging with the outer wall of the cam. A drive rod is movably inserted into the inner wall of the collection box, passing through the collection box and the water collection tank and movably inserted into the cam. A nozzle is fixedly inserted into the inner wall of the collection box, with its inlet end connected to the water collection tank.

[0009] By adopting the above technical solution, this solution first uses a blower and a blower pipe to continuously suck up the powder in the powder spraying chamber. When it is necessary to clean the powder on the blower, the powder on the blower is scraped downward by a scraper, and the scraper pushes the sealing plate to deflect, causing the discharge port to open, thereby causing the powder to fall into the collection box.

[0010] Optionally, the scraping component includes an electric push rod and a scraper. The electric push rod is fixedly mounted on the top of the exhaust pipe, and the extended end of the electric push rod is inserted into the exhaust pipe and fixedly connected to the scraper.

[0011] By adopting the above technical solution, this solution facilitates the movement of the scraper by using an electric push rod, thereby making it easier to scrape away the powder on the exhaust fan.

[0012] Optionally, a filter plate is fixedly installed at the air inlet end of the exhaust fan.

[0013] By adopting the above technical solution, this solution facilitates the filtration of powder in the air through the filter plate.

[0014] Optionally, two abutment rods are symmetrically arranged at the bottom of the scraper, the scraper slides in contact with the outer wall of the filter plate, and the scraper is L-shaped.

[0015] By adopting the above technical solution, when the electric push rod pushes the scraper to move, the scraper can easily scrape the powder on the filter plate, thereby reducing the possibility of powder clogging the filter plate.

[0016] Optionally, a plurality of first springs are fixedly provided on the bottom surface of the sealing plate, and the ends of the plurality of first springs away from the sealing plate are connected to the inner sidewall of the material discharge port.

[0017] By adopting the above technical solution, when the sealing plate is pushed downward by the abutment rod, the first spring is compressed and deformed. When the abutment rod separates from the sealing plate, the sealing plate is reset by the first spring and the discharge port is blocked.

[0018] Optionally, the cam component has a spiral groove inside, and the outer wall of the cam component has several recesses along the circumference.

[0019] By adopting the above technical solution, this solution facilitates the control of the piston's up and down movement when the cam rotates, and pushes the water in the water collection tank into the nozzle when the piston moves down.

[0020] Optionally, the piston component includes a piston plate, which is movably disposed within the water collection tank. The top surface of the piston plate is connected to the inner top wall of the water collection tank via a second spring. A round rod is fixedly disposed on the top surface of the piston plate, and the round rod slides in cooperation with the outer wall of the cam component. A one-way liquid inlet pipe is fixedly inserted into the outer wall of the water collection tank.

[0021] By adopting the above technical solution, when the cam component rotates, the round rod coincides with the concave part of the cam component. At this time, the piston plate is pulled up by the second spring, thereby drawing water from the external water supply equipment into the water collection tank through the one-way liquid inlet pipe.

[0022] Optionally, one end of the drive rod is connected to the inner wall of the collection box by a third spring, and the other end of the drive rod is inserted into the spiral groove and a semicircular block is fixedly installed thereon, with the semicircular block slidingly engaging with the inner wall of the spiral groove.

[0023] By adopting the above technical solution, when the sealing plate deflects downward, the sealing plate pushes the drive rod to move and causes the semicircular block to slide along the inner wall of the spiral groove, thereby causing the cam to rotate.

[0024] In summary, this utility model has at least one of the following beneficial effects:

[0025] When it is necessary to clean the powder on the exhaust fan, the scraper will scrape the powder downwards and push the sealing plate to deflect, causing the discharge port to open, so that the powder falls into the collection box. Therefore, it is easier to clean the powder in the exhaust pipe.

[0026] When the sealing plate deflects, it pushes the drive rod to move, which in turn drives the cam to rotate and controls the piston to move up and down. This continuously wets the powder with water from the water collection tank through the nozzle. As the scraper resets and separates from the sealing plate, the sealing plate resets and blocks the discharge port, thus reducing the possibility of powder drifting back into the exhaust pipe from the collection box. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a partial three-dimensional structural cross-sectional view of the present invention;

[0030] Figure 3 This is a partial three-dimensional unfolded cross-sectional view of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 100, cleaning mechanism; 101, exhaust duct; 102, exhaust fan; 102a, filter plate; 103, scraper; 103a, electric push rod; 103b, scraper; 103c, contact rod;

[0032] 200. Collection mechanism; 201. Collection box; 202. Discharge port; 203. Sealing plate; 203a. First spring; 204. Water collection tank; 204a. One-way liquid inlet pipe; 205. Cam component; 205a. Spiral groove; 205b. Recess; 206. Piston component; 206a. Piston plate; 206b. Second spring; 206c. Round rod; 207. Drive rod; 207a. Third spring; 207b. Semicircular block; 208. Nozzle. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.

[0034] Example 1, refer to Figure 1-3 In this embodiment, to address the problem of existing devices accumulating powder inside the exhaust duct during use, requiring operators to periodically clean the powder from the duct—a process that necessitates opening the exhaust duct and thus making dust removal cumbersome—this invention discloses a central duct exhaust structure for a furniture electrostatic powder coating chamber.

[0035] The cleaning mechanism 100 includes an exhaust pipe 101, an exhaust fan 102 is installed in the exhaust pipe 101, and a filter plate 102a is fixedly installed in the exhaust fan 102. The filter plate 102a facilitates the filtration of powder in the air, thereby reducing the possibility of powder continuously entering the exhaust fan 102.

[0036] A scraper 103 is provided at the inner top of the exhaust pipe 101. The scraper 103 slides with the outer wall of the air inlet end of the exhaust fan 102. The scraper 103 includes an electric push rod 103a and a scraper 103b. The electric push rod 103a is fixedly installed at the top of the exhaust pipe 101. The protruding end of the electric push rod 103a is inserted into the exhaust pipe 101 and fixedly connected to the scraper 103b. The electric push rod 103a facilitates the movement of the scraper 103b, thereby facilitating the scraping of powder on the exhaust fan 102.

[0037] Two abutment rods 103c are symmetrically arranged at the bottom of the scraper 103b. The scraper 103b slides with the outer wall of the filter plate 102a. The scraper 103b is L-shaped. When the electric push rod 103a pushes the scraper 103b to move, the scraper 103b can easily scrape the powder on the filter plate 102a, thereby reducing the possibility of powder clogging the filter plate 102a. As the scraper 103b moves, it drives the abutment rods 103c to move synchronously, thereby pushing the sealing plate 203 to deflect and causing the discharge port 202 to open.

[0038] The collection mechanism 200 includes a collection box 201, which is fixedly installed at the bottom of the exhaust pipe 101. The exhaust pipe 101 has a discharge port 202, which is connected to the collection box 201 through the discharge port 202. A sealing plate 203 is hinged in the discharge port 202. When it is necessary to clean the powder on the exhaust fan 102, the scraper 103 scrapes the powder on the exhaust fan 102 downwards and pushes the sealing plate 203 to deflect, causing the discharge port 202 to open, thereby causing the powder to fall into the collection box 201.

[0039] The outer wall of the collection box 201 is provided with a water collection tank 204, which facilitates the storage of water. A cam component 205 is rotatably arranged inside the water collection tank 204, and a piston component 206 is movably arranged on the inner wall of the water collection tank 204. The upper end of the piston component 206 slides in cooperation with the outer wall of the cam component 205, so that when the cam component 205 rotates, it is easy to control the up and down movement of the piston component 206.

[0040] A drive rod 207 is movably inserted into the inner wall of the collection box 201. The drive rod 207 passes through the collection box 201 and the water tank 204 and is movably inserted into the cam component 205. A nozzle 208 is fixedly inserted into the inner wall of the collection box 201. The liquid inlet end of the nozzle 208 is connected to the water tank 204. As the sealing plate 203 deflects, it pushes the drive rod 207 to move, thereby driving the cam component 205 to rotate and controlling the piston component 206 to move up and down. This continuously sprays water from the water tank 204 into the collection box 201 through the nozzle 208 and wets the powder through the water mist.

[0041] The specific working principle is as follows: First, the exhaust fan 102 and the exhaust pipe 101 work together to continuously suck up the powder in the powder spraying chamber. When it is necessary to clean the powder on the exhaust fan 102, the scraper 103 scrapes the powder on the exhaust fan 102 downwards, and the scraper 103 pushes the sealing plate 203 to deflect, causing the discharge port 202 to open, thereby causing the powder to fall into the collection box 201.

[0042] Example 2, refer to Figure 2-3 In this embodiment, in order to solve the problem that dust easily disperses throughout the exhaust structure when the internal cleaning mechanism of some existing exhaust structures is working, based on the same concept as in Embodiment 1 above, the central duct exhaust structure of the furniture electrostatic powder spraying chamber further includes:

[0043] A plurality of first springs 203a are fixedly installed on the bottom surface of the sealing plate 203. The ends of the first springs 203a away from the sealing plate 203 are connected to the inner side wall of the discharge port 202. When the sealing plate 203 is pushed downward by the abutment rod 103c, the first springs 203a are compressed and deformed. When the abutment rod 103c is separated from the sealing plate 203, the first springs 203a push the sealing plate 203 to reset and block the discharge port 202.

[0044] The cam component 205 has a spiral groove 205a inside, and the outer wall of the cam component 205 has several recesses 205b along the circumference. When the cam component 205 rotates, it is convenient to control the piston component 206 to move up and down. When the piston component 206 moves down, it pushes the water in the water collection tank 204 into the nozzle 208, so that the powder is wetted by spraying water mist through the nozzle 208.

[0045] The specific working principle is as follows: as the sealing plate 203 deflects, it pushes the drive rod 207 to move, thereby driving the cam 205 to rotate and controlling the piston 206 to move up and down. This continuously sprays water from the water collection tank 204 into the collection box 201 through the nozzle 208, and wets the powder with water mist. As the scraper 103 resets and separates from the sealing plate 203, the sealing plate 203 resets and blocks the discharge port 202, thereby reducing the possibility of powder drifting back into the exhaust pipe 101 from the collection box 201.

[0046] Example 3, refer to Figure 2-3 Based on the same concept as in Embodiment 1 above, the central duct exhaust structure of the furniture electrostatic powder coating chamber further includes:

[0047] The piston component 206 includes a piston plate 206a, which is movably disposed within the water collection tank 204. The top surface of the piston plate 206a is connected to the inner top wall of the water collection tank 204 via a second spring 206b. A round rod 206c is fixedly disposed on the top surface of the piston plate 206a, and the round rod 206c slides against the outer wall of the cam component 205. A one-way inlet pipe 204a is fixedly inserted into the outer wall of the water collection tank 204, and a one-way valve is disposed within the one-way inlet pipe 204a. When the cam 205 rotates, the round rod 206c coincides with the recess 205b of the cam 205. At this time, the piston plate 206a is pulled upward by the second spring 206b, thereby drawing water from the external water supply equipment into the water collection tank 204 through the one-way liquid inlet pipe 204a. When the round rod 206c separates from the recess 205b of the cam 205, the abutting rod 103c drives the piston plate 206a downward and pushes the water in the water collection tank 204 into the nozzle 208.

[0048] One end of the drive rod 207 is connected to the inner wall of the collection box 201 via a third spring 207a. The other end of the drive rod 207 is inserted into the spiral groove 205a and a semicircular block 207b is fixedly installed thereon. The semicircular block 207b slides against the inner wall of the spiral groove 205a. When the sealing plate 203 deflects downward, the sealing plate 203 pushes the drive rod 207 to move and causes the semicircular block 207b to slide along the inner wall of the spiral groove 205a, thereby causing the cam component 205 to rotate. As the drive rod 207 moves, the third spring 207a is compressed and deformed. When the sealing plate 203 returns to its original position, the drive rod 207 loses its thrust. At this time, the third spring 207a pushes the drive rod 207 to return to its original position. The semicircular block 207b then slides along the inner wall of the spiral groove 205a, thereby causing the cam component 205 to rotate in the opposite direction.

[0049] The specific working principle is as follows: when the sealing plate 203 deflects downward, the sealing plate 203 pushes the drive rod 207 to move and causes the semi-circular block 207b to slide along the inner wall of the spiral groove 205a, thereby causing the cam 205 to rotate, and as the drive rod 207 moves, it causes the third spring 207a to compress and deform.

[0050] When the cam 205 rotates, the round rod 206c coincides with the recess 205b of the cam 205. At this time, the piston plate 206a is pulled upward by the second spring 206b, so that water from the external water supply equipment is sucked into the water collection tank 204 through the one-way liquid inlet pipe 204a.

[0051] When the sealing plate 203 is reset, the drive rod 207 loses its thrust. At this time, the third spring 207a pushes the drive rod 207 to reset. At this time, the semicircular block 207b slides along the inner wall of the spiral groove 205a, thereby causing the cam 205 to rotate in the opposite direction.

[0052] When the round rod 206c separates from the recess 205b of the cam 205, the abutting rod 103c drives the piston plate 206a to move down and pushes the water in the water collection tank 204 into the nozzle 208.

[0053] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A central duct exhaust structure for a furniture electrostatic powder coating chamber, characterized in that: include, The cleaning mechanism (100) includes an exhaust pipe (101), an exhaust fan (102) is provided in the exhaust end of the exhaust pipe (101), and a scraper (103) is provided on the inner top of the exhaust pipe (101). The scraper (103) slides in cooperation with the outer wall of the air inlet end of the exhaust fan (102). A collection mechanism (200) includes a collection box (201) fixedly disposed at the bottom of an exhaust pipe (101). A discharge port (202) is provided inside the exhaust pipe (101), and the exhaust pipe (101) communicates with the collection box (201) through the discharge port (202). A sealing plate (203) is hinged inside the discharge port (202). A water collection tank (204) is provided on the outer wall of the collection box (201), and a cam component (205) is rotatably disposed inside the water collection tank (204). A piston (206) is movably installed on the inner wall of the water collection tank (204). The upper end of the piston (206) slides in cooperation with the outer wall of the cam (205). A drive rod (207) is movably inserted into the inner wall of the collection box (201). The drive rod (207) passes through the collection box (201) and the water collection tank (204) and is movably inserted into the cam (205). A nozzle (208) is fixedly inserted into the inner wall of the collection box (201). The liquid inlet end of the nozzle (208) is connected to the water collection tank (204).

2. The central duct exhaust structure of the furniture electrostatic powder coating chamber according to claim 1, characterized in that: The scraping component (103) includes an electric push rod (103a) and a scraper (103b). The electric push rod (103a) is fixedly installed on the top of the exhaust pipe (101). The protruding end of the electric push rod (103a) is inserted into the exhaust pipe (101) and fixedly connected to the scraper (103b).

3. The central duct exhaust structure of the furniture electrostatic powder coating chamber according to claim 2, characterized in that: A filter plate (102a) is fixedly installed at the air inlet end of the exhaust fan (102).

4. The central duct exhaust structure of the furniture electrostatic powder coating chamber according to claim 3, characterized in that: The scraper (103b) has two symmetrically arranged abutment rods (103c) at its bottom. The scraper (103b) slides in cooperation with the outer wall of the filter plate (102a). The scraper (103b) is L-shaped.

5. The central duct exhaust structure of the furniture electrostatic powder coating chamber according to claim 1, characterized in that: A plurality of first springs (203a) are fixedly provided on the bottom surface of the sealing plate (203), and one end of the plurality of first springs (203a) away from the sealing plate (203) is connected to the inner sidewall of the material discharge port (202).

6. The central duct exhaust structure of the furniture electrostatic powder coating chamber according to claim 1, characterized in that: The cam component (205) has a spiral groove (205a) inside, and the outer wall of the cam component (205) has a plurality of recesses (205b) along the circumference.

7. The central duct exhaust structure of the furniture electrostatic powder coating chamber according to claim 1, characterized in that: The piston component (206) includes a piston plate (206a), which is movably disposed inside the water collection tank (204). The top surface of the piston plate (206a) is connected to the inner top wall of the water collection tank (204) by a second spring (206b). A round rod (206c) is fixedly disposed on the top surface of the piston plate (206a). The round rod (206c) slides with the outer wall of the cam component (205). A one-way liquid inlet pipe (204a) is fixedly inserted into the outer wall of the water collection tank (204).

8. The central duct exhaust structure of the furniture electrostatic powder coating chamber according to claim 6, characterized in that: One end of the drive rod (207) is connected to the inner wall of the collection box (201) by a third spring (207a). The other end of the drive rod (207) is inserted into the spiral groove (205a) and a semi-circular block (207b) is fixedly installed thereon. The semi-circular block (207b) slides with the inner wall of the spiral groove (205a).

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