Filter bag coating brushing device
By employing a combination of heat pipe heating and airflow drying in the filter bag coating spraying device, the problems of uneven coating thickness and untimely drying are solved, ensuring coating uniformity and rapid drying, and improving spraying efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHENGDA SENYUAN ENVIRONMENTAL PROTECTION CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-04-24
AI Technical Summary
Existing filter bag coatings are prone to uneven thickness during the spraying process due to contact with the conveyor rollers, and the coating may stick or be damaged if it is not dried in time.
The spraying assembly is used to spray one side of the filter bag first, and then the heat is heated by the heat pipe and dried by airflow. The coating is then trimmed with a roller to ensure uniformity and to avoid contact with other structures before it is completely dry. The coating is then dried again after spraying both sides.
This achieves uniformity and rapid drying of the filter bag coating, avoiding problems such as uneven coating thickness and adhesion damage, and improving spraying efficiency and quality.
Smart Images

Figure CN224157133U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter bag production technology, specifically a filter bag coating application device. Background Technology
[0002] Currently, filter bags are a key component in the operation of baghouse dust collectors. Dust collector filter bags are also known as dust filter bags, dust collection bags, dust collector bags, dust collection bags, etc. We are a professional manufacturing base for dust collector accessories. Filter bags are a key component in the operation of baghouse dust collectors. Cylindrical filter bags are usually suspended vertically in the dust collector. The fabric and design of the filter bags should strive for high-efficiency filtration, easy dust removal, and durability.
[0003] The existing utility model patent with publication number CN217989736U discloses a filter bag coating brushing device, which includes a housing. A conveying groove is formed in the middle of the top of the housing. A brushing plate is provided at both the top and bottom of the conveying groove. Spray heads are evenly installed on the inner wall of the brushing plate. A roller groove is evenly formed at the bottom of the conveying groove, and a rotating roller is built into the roller groove. A motor is located on the left side inside the housing. A pulley is fixed on the rotating shaft of the rotating roller, and a belt is sleeved on the outside of the pulley. A paint pump is located on the right side of the housing. This utility model, by setting spray heads inside the conveying groove, achieves an automatic coating effect on both ends of the filter bag as it passes through the conveying groove during the filter bag coating process, thereby improving the efficiency and quality of the coating process.
[0004] The aforementioned coating device sprays the coating onto both sides of the filter bag using a spray head. Since the coating needs time to dry, and the filter bag is conveyed by a rotating roller, after the coating is completed, the coating on the contact surface between the filter bag and the rotating roller will come into contact with the roller surface, resulting in uneven coating thickness. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a filter bag coating application device that solves the problems of the conveyor roller affecting the uniformity of the coating and the time required for the coating to dry completely.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a filter bag coating brushing device includes a support frame, a limiting roller is movably installed inside the support frame, and a brushing device is arranged above the support frame.
[0007] The conveying assembly includes jet pipes fixedly installed at the front and rear ends of a support frame. A diverter pipe is fixedly installed at one end of the jet pipe, and a connecting pipe is fixedly installed at one end of the diverter pipe. An air compressor is fixedly installed at the bottom end of the connecting pipe. The conveying assembly also includes a fixed shaft fixedly installed on the front and rear sides of the support frame. A limit frame is fixedly installed on the outside of the fixed shaft, and a heating plate is fixedly installed on the outside of the limit frame. A heat-conducting pipe is movably installed on the outside of the fixed shaft, and a drive motor is connected to one side of the heat-conducting pipe.
[0008] The spraying assembly, located on one side of the support frame, is used to spray paint onto the outer side of the filter bag fabric.
[0009] Preferably, the conveying assembly further includes a limiting tube fixedly installed above the support frame, a movable frame movably installed inside the limiting tube, a spring inserted through the outer side of the movable frame, and a roller brush movably installed between the movable frames.
[0010] Preferably, the limiting roller and the support frame are rotatably connected, the jet pipes are installed in a horizontal equidistant array on the front and rear sides of the support frame, the diverter pipe is fixedly connected to the support frame, the diverter pipe is connected to the air compressor through a connecting pipe, the limiting frame is an incomplete circular ring, and the heating plate has an arc-shaped structure and is installed equidistantly on the outside of the limiting frame.
[0011] Preferably, the heat-conducting pipe is rotatably connected to the fixed shaft, one end of the heat-conducting pipe is fixedly connected to the rotating shaft of the drive motor, the drive motor is fixedly connected to the support frame, the movable frame is slidably connected to the limiting pipe, the inner cavity of the limiting pipe is fitted with the top disc structure of the movable frame, an annular protrusion is provided at the bottom of the inner wall of the limiting pipe, and the roller brush is installed on the upper and lower sides of the heat-conducting pipe through the limiting pipe and the movable frame, and is in contact with the heat-conducting pipe.
[0012] Preferably, the spraying assembly includes a support platform fixedly installed on one side of the support frame, a material hopper is installed above the support platform, a partition is fixedly installed inside the material hopper, an inlet pipe is installed on one side of the material hopper, a gear pump is connected to one end of the inlet pipe, a conveying pipe is fixedly installed at the output end of the gear pump, and a spraying pipe is installed below the conveying pipe.
[0013] Preferably, the feed pipe has two pipes, one long and one short, which are respectively connected to the center of the support platform and the feed end of the gear pump at the top. The bottom end of the feed pipe is flush with the bottom end of the feed pipe. The partition is located between the bottom ends of the feed pipe. A rod-shaped support structure connected to the support frame is provided on the outside of the conveying pipe. The spraying pipe is installed in a horizontal array below the conveying pipe and points vertically to the ground.
[0014] Beneficial effects
[0015] This invention provides a filter bag coating application device. Compared with the prior art, it has the following advantages:
[0016] (1) The filter bag coating brushing device first sprays one side of the filter bag through the spraying component, restricting the sprayed surface to the outside of the heat conduction pipe. Then the filter bag moves and flips naturally under the drive of the heat conduction pipe, and is dried at the same time, avoiding contact between the sprayed surface and other structures before it is completely dry. Then the other side of the filter bag fabric is sprayed, and then dried and flipped by the front heat conduction pipe. At the same time, the roller brush performs secondary trimming on the coating during the conveying process, further ensuring the uniformity of the single-sided sprayed surface. The structural design solves the problem of uneven coating thickness caused by the contact roller in traditional double-sided spraying.
[0017] (2) The filter bag coating application device heats the heat-conducting pipe through an electric heating plate, and uses the contact between the heat-conducting pipe and the fabric to transfer heat, directly heating and drying the coating; at the same time, the air compressor-driven jet pipe generates a directional airflow, which promptly carries away the moisture evaporated from the coating, accelerating the drying process. The synergistic effect of heating and airflow drying ensures that the coating is completely dry during the conveying process, avoiding coating adhesion or damage due to untimely drying. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the air compressor installation structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the heating plate installation structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the spring mounting structure of this utility model;
[0022] Figure 5 This is a schematic diagram of the gear pump installation structure of this utility model;
[0023] In the diagram: 1. Support frame; 11. Limiting roller; 2. Coating device; 21. Conveying assembly; 211. Air jet pipe; 212. Diverter pipe; 213. Connecting pipe; 214. Air compressor; 215. Fixed shaft; 216. Limiting frame; 217. Heating plate; 218. Heat conduction pipe; 219. Drive motor; 2110. Limiting pipe; 2111. Movable frame; 2112. Spring; 2113. Roller brush; 22. Spraying assembly; 221. Support platform; 222. Hopper; 223. Partition; 224. Feed pipe; 225. Gear pump; 226. Conveying pipe; 227. Spraying pipe. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-5 This utility model provides a technical solution: a filter bag coating brushing device, including a support frame 1, a limiting roller 11 movably installed inside the support frame 1, and a brushing device 2 arranged above the support frame 1.
[0026] The conveying assembly 21 includes jet pipes 211 fixedly installed at the front and rear ends of the support frame 1. A diverter pipe 212 is fixedly installed at one end of the jet pipe 211, and a connecting pipe 213 is fixedly installed at one end of the diverter pipe 212. An air compressor 214 is fixedly installed at the bottom end of the connecting pipe 213. The conveying assembly 21 also includes a fixed shaft 215 fixedly installed on the front and rear sides of the support frame 1. A limit frame 216 is fixedly installed on the outside of the fixed shaft 215. An electric heating plate 217 is fixedly installed on the outside of the limit frame 216. A heat-conducting pipe 218 is movably installed on the outside of the fixed shaft 215. A drive motor 219 is connected to one side of the heat-conducting pipe 218. The conveying assembly 21 also includes a limit pipe 2110 fixedly installed above the support frame 1. A movable frame 2111 is movably installed inside the limit pipe 2110. A spring 2112 is inserted and installed on the outside of the movable frame 2111. A roller brush 2113 is movably installed between the movable frames 2111. The limit roller 11 and the limit roller 11 are connected to the support frame 1. The support frames 1 are rotatably connected. The jet pipes 211 are horizontally and equidistantly arrayed on the front and rear sides of the support frames 1. The splitter pipe 212 is fixedly connected to the support frames 1 and connected to the air compressor 214 via a connecting pipe 213. The limiting frame 216 is an incomplete annular shape. The heating plate 217 has an arc-shaped structure and is equidistantly installed on the outside of the limiting frame 216. The heat-conducting pipe 218 is rotatably connected to the fixed shaft 215. One end of the heat-conducting pipe 218... The drive motor 219 is fixedly connected to the shaft of the drive motor 219, and the drive motor 219 is fixedly connected to the support frame 1. The movable frame 2111 and the limiting tube 2110 are slidably connected. The inner cavity of the limiting tube 2110 is fitted with the top disc structure of the movable frame 2111. An annular protrusion is provided at the bottom of the inner wall of the limiting tube 2110. The roller brush 2113 is installed on the upper and lower sides of the heat-conducting pipe 218 through the limiting tube 2110 and the movable frame 2111, and is in contact with the heat-conducting pipe 218.
[0027] Specifically, the support frame 1 can limit the position of the limiting roller 11 and the jet pipe 211. Air is supplied to the inside of the jet pipe 211 through the air compressor 214, connecting pipe 213, and diverting pipe 212, so that the end of the jet pipe 211 generates an airflow that blows onto the heat conduction pipe 218. The heat conduction pipe 218 can rotate under the drive of the drive motor 219. The roller brushes 2113 on the upper and lower sides of the heat conduction pipe 218 clamp the filter bag fabric to facilitate the movement of the fabric driven by the heat conduction pipe 218. At the same time, the roller brushes 2113 can make the coating on the surface of the filter bag fabric more evenly distributed. The limiting roller 11 can limit the bending position of the fabric. The fabric passes above the limiting roller 11 at the top of the device and is connected to the heat conduction pipe 218 on the rear side of the support frame 1. After the roller brush 2113 above 218 moves downwards around the rear heat pipe 218 of the support frame 1, then moves forward past the rear heat pipe 218 and the roller brush 2113 below it, and finally moves backwards around the front heat pipe 218 of the support frame 1. The movement path is "S" shaped. The electric heating plate 217 is installed inside the heat pipe 218 through the limiting frame 216 and the fixed shaft 215. When the electric heating plate 217 is powered on, it can generate heat to heat the heat pipe 218, thereby heating the fabric while conveying the fabric, causing the moisture in the coating to evaporate into the air. The airflow generated by the jet pipe 211 carries the humid air away from the vicinity of the heat pipe 218, so as to ensure that the surface coating of the fabric can dry quickly after passing through the heat pipe 218.
[0028] The spraying assembly 22, located on one side of the support frame 1, is used to spray paint onto the outer side of the filter bag fabric. The spraying assembly 22 includes a support platform 221 fixedly installed on one side of the support frame 1. A material hopper 222 is installed above the support platform 221. A partition 223 is fixedly installed inside the material hopper 222. An inlet pipe 224 is installed on one side of the material hopper 222. One end of the inlet pipe 224 is connected to a gear pump 225. A delivery pipe is fixedly installed at the output end of the gear pump 225. 226. A spraying pipe 227 is installed below the conveying pipe 226. There are two feed pipes 224, one long and one short, which are connected to the center and the top of the gear pump 225 feed end of the support platform 221, respectively. The bottom end of the feed pipe 224 is flush with the bottom end of the feed pipe 224. The partition plate 223 is located between the bottom ends of the feed pipe 224. A rod-shaped support structure connected to the support frame 1 is provided on the outside of the conveying pipe 226. The spraying pipes 227 are installed in a horizontal array below the conveying pipe 226 and point vertically to the ground.
[0029] Specifically, the support platform 221 supports the hopper 222 and the gear pump 225. The gear pump 225 draws the paint out from the bottom of the hopper 222 through the feed pipe 224 and delivers it to the spray pipe 227 through the conveying pipe 226. The spray pipe 227 then sprays the paint onto the surface of the filter bag fabric. The upper conveying pipe 226 can spray one side of the fabric. After the fabric passes through the heat conduction pipe 218 on the back of the support frame 1, it flips over so that the lower conveying pipe 226 can spray the other side of the fabric. The partition 223 can prevent the feed pipes 224 on both sides from forming a cavity at the bottom of the hopper 222 after the gear pump 225 is started, which would cause air to enter the conveying pipe 226 and affect the uniformity of the spraying.
[0030] Specifically, the air compressor 214 is model JP2V-D50, the drive motor 219 is model YE3, and the gear pump 227 is model KF8LF2-D15. In addition, all contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0031] During operation, the filter bag fabric enters from the top of the device and passes through the area below the spray pipe 227 under the restriction of the limiting roller 11. In the spraying assembly 22, the material bin 222 supported by the support platform 221 is divided into internal cavities by the internal partition 223 to prevent the two feed pipes 224 from being of different lengths and forming a cavity when the bottom ends are flush during material extraction. The gear pump 225 draws paint from the bottom of the material bin 222 through the feed pipe 224, and conveys it to the horizontally arrayed spraying pipes 227 via the conveying pipe 226, which is fixed to the support frame 1 by the rod-shaped support structure. The spraying pipes 227 spray the paint evenly onto one side surface of the filter bag fabric vertically downwards. The sprayed fabric enters the conveying assembly 21: the drive motor 219 drives the heat-conducting pipe 218 to rotate around the fixed shaft 215. The movable frame 2111, within the limiting tube 2110, uses the elasticity of the spring 2112 to make the roller brush 2113 tightly adhere to the upper and lower sides of the heat-conducting pipe 218, thereby clamping and conveying the fabric. At the same time, the roller brush 2113 performs secondary finishing of the coating to ensure uniformity. The fixed shaft 215 On the outer limiting frame 216, arc-shaped electric heating plates 217 are installed at equal intervals. The heat generated after being powered on is transferred to the heat conduction pipes 218 to heat the fabric and coating, accelerating the evaporation of moisture in the coating. At the same time, the airflow generated by the air compressor 214 is transported through the connecting pipe 213 and the split pipe 212 to the horizontally equidistant array of jet pipes 211, which are fixed at the front and rear ends of the support frame 1. The jet pipes 211 blow airflow near the heat conduction pipes 218 to remove the evaporated moisture in time, achieving the first drying of the coating. The fabric is naturally flipped under the action of the heat conduction pipes 218, so that the uncoated side faces upward. When it continues to move forward to the center of the device, another set of spray pipes 227 sprays the other side of the surface. Then, the fabric passes through the subsequent heat conduction pipes 218 again and completes the second drying under the heating of the electric heating plate 217 and the airflow of the jet pipes 211, and flips again to adjust its posture. Finally, the filter bag fabric, after being sprayed on both sides, dried twice, and flipped, is discharged from the bottom of the rear end of the device, completing the entire coating process.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A filter bag coating application device, comprising a support frame (1), characterized in that: A limiting roller (11) is movably installed inside the support frame (1), and a brushing device (2) is provided above the support frame (1). The conveying assembly (21) includes a jet pipe (211) fixedly installed at the front and rear ends of the support frame (1). A diverter pipe (212) is fixedly installed at one end of the jet pipe (211). A connecting pipe (213) is fixedly installed at one end of the diverter pipe (212). An air compressor (214) is fixedly installed at the bottom end of the connecting pipe (213). The conveying assembly (21) also includes a fixed shaft (215) fixedly installed on the front and rear sides of the support frame (1). A limit frame (216) is fixedly installed on the outside of the fixed shaft (215). An electric heating plate (217) is fixedly installed on the outside of the limit frame (216). A heat-conducting pipe (218) is movably installed on the outside of the fixed shaft (215). A drive motor (219) is connected to one side of the heat-conducting pipe (218). A spraying assembly (22) is provided on one side of the support frame (1) for spraying paint onto the outer side of the filter bag fabric.
2. The filter bag coating application device according to claim 1, characterized in that: The conveying assembly (21) also includes a limiting tube (2110) fixedly installed above the support frame (1). A movable frame (2111) is movably installed inside the limiting tube (2110). A spring (2112) is inserted and installed on the outside of the movable frame (2111). A roller brush (2113) is movably installed between the movable frames (2111).
3. The filter bag coating application device according to claim 2, characterized in that: The limiting roller (11) and the support frame (1) are rotatably connected. The jet pipe (211) is installed in a horizontal equidistant array on the front and rear sides of the support frame (1). The diverter pipe (212) is fixedly connected to the support frame (1). The diverter pipe (212) is connected to the air compressor (214) through the connecting pipe (213). The limiting frame (216) is an incomplete circular ring. The heating plate (217) has an arc structure and is installed equidistantly on the outside of the limiting frame (216).
4. The filter bag coating application device according to claim 2, characterized in that: The heat-conducting pipe (218) is rotatably connected to the fixed shaft (215). One end of the heat-conducting pipe (218) is fixedly connected to the rotating shaft of the drive motor (219). The drive motor (219) is fixedly connected to the support frame (1). The movable frame (2111) is slidably connected to the limiting pipe (2110). The inner cavity of the limiting pipe (2110) is fitted with the top disc structure of the movable frame (2111). An annular protrusion is provided at the bottom of the inner wall of the limiting pipe (2110). The roller brush (2113) is installed on the upper and lower sides of the heat-conducting pipe (218) through the limiting pipe (2110) and the movable frame (2111), and is in contact with the heat-conducting pipe (218).
5. The filter bag coating application device according to claim 1, characterized in that: The spraying assembly (22) includes a support platform (221) fixedly installed on one side of the support frame (1). A hopper (222) is installed above the support platform (221). A partition (223) is fixedly installed inside the hopper (222). An inlet pipe (224) is installed on one side of the hopper (222). A gear pump (225) is connected to one end of the inlet pipe (224). A conveying pipe (226) is fixedly installed at the output end of the gear pump (225). A spraying pipe (227) is installed below the conveying pipe (226).
6. The filter bag coating application device according to claim 5, characterized in that: The feed pipe (224) has two pipes, one long and one short, which are connected to the feed end of the gear pump (225) at the center and top of the support platform (221), respectively. The bottom end of the feed pipe (224) is flush with the bottom end of the feed pipe (224). The partition plate (223) is located between the bottom ends of the feed pipe (224). The outer side of the conveying pipe (226) is provided with a rod-shaped support structure connected to the support frame (1). The spraying pipe (227) is installed in a horizontal array below the conveying pipe (226) and points vertically to the ground.
Citation Information
Patent Citations
Filter bag coating brushing device
CN217989736U