Device for quickly checking breakage of cloth bag of dust collector
By introducing a laser dust detector and a timed pulse solenoid valve into the dust collector, damaged filter bags can be automatically detected and marked, solving the problem of long downtime caused by manual inspection. This achieves rapid and automated filter bag damage detection and improves production efficiency.
Patent Information
- Application Number
- CN202520532536.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Existing pulse jet baghouse dust collectors require manual inspection of each bag after a leak, resulting in long downtime and reduced production efficiency.
A laser dust detector combined with a timed pulse solenoid valve is used to automatically locate damaged filter bags and mark and alarm via the control panel, reducing manual inspection steps.
It enables rapid and automated detection of bag damage, reducing the labor intensity of workers, shortening downtime, and improving production efficiency.
Smart Images

Figure CN223827235U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a check device, especially a device for quickly checking the damage of dust collector cloth bags. BACKGROUND
[0002] Pulse bag filter is a kind of high-efficiency dry filter equipment, and is widely used in industrial field to remove particulate matter in air. It captures dust in dust-containing gas by using filter bag, and removes dust adhered to the filter bag by using short blowing of compressed air, so as to maintain good air permeability and filtration efficiency.
[0003] After the cloth bag of the existing pulse bag filter is damaged, it is necessary to manually check each cloth bag inside the dust collector, which is time-consuming and laborious, resulting in long downtime and affecting production efficiency. UTILITY MODEL CONTENTS
[0004] In order to overcome the shortcomings of the existing pulse bag filter, which needs manual internal inspection after the cloth bag is damaged, resulting in long downtime and affecting production efficiency, the utility model can provide a device for quickly checking the damage of dust collector cloth bags.
[0005] The technical scheme of the utility model is: a device for quickly checking the damage of dust collector cloth bags, comprising a support frame, a middle box body, an upper box body, an ash bucket, a wind pipe, a draft fan, a pulse electromagnetic valve, a gas storage tank, a top cover, a control panel, a blowing pipe, a multi-hole connecting plate, a cage and a filter bag, the inside of the support frame is provided with the middle box body, the left side of the middle box body is provided with an air inlet, the bottom of the middle box body is provided with the ash bucket, the top of the middle box body is provided with the upper box body, the top of the upper box body is provided with the top cover, the right side of the upper box body is provided with the wind pipe, the right end of the wind pipe is provided with the draft fan, the inner wall of the outlet of the top of the draft fan is provided with a laser dust detector, the front side of the upper box body is provided with a plurality of pulse electromagnetic valves, the bottom of the pulse electromagnetic valve is provided with the gas storage tank, the front side of the pulse electromagnetic valve is provided with the blowing pipe, the bottom of each blowing pipe is provided with a plurality of air outlets, the inside of the upper box body is provided with the multi-hole connecting plate, a plurality of through holes are formed in the multi-hole connecting plate, the through holes are located directly below each air outlet, the bottom of each through hole is provided with the cage, the cage is sleeved with the filter bag, the front side of the middle box body is provided with the control panel, the draft fan, the pulse electromagnetic valve and the laser dust detector are electrically connected with the control panel, the starting time of the pulse electromagnetic valve is preset through the control panel, and each pulse electromagnetic valve is sequentially started in order.
[0006] Further, the laser dust detector is provided with an alarm.
[0007] Further, it further comprises a semicircular pull ring, an elastic rope and a counterweight, each filter bag is provided with a semicircular pull ring, the semicircular pull ring is connected with the elastic rope at the bottom, and the elastic rope is provided with the counterweight at the bottom.
[0008] Furthermore, it also includes a Venturi tube, with a Venturi tube installed on the inner wall of the through hole.
[0009] Furthermore, it also includes an inspection door, which is hinged to the front of the middle housing.
[0010] Furthermore, it also includes guardrails, with guardrails installed on the outside of the middle box.
[0011] The beneficial effects are: by adding a laser dust detector at the duct outlet and a timed start and marking function for the pulse solenoid valve, this utility model can locate the leaks in the filter bags of each pulse solenoid valve row, eliminating the need for workers to inspect every filter bag in the dust collector after a leak, thus greatly reducing the labor intensity of workers. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0013] Figure 2 This is a schematic diagram of the pulse solenoid valve and the gas storage tank of this utility model.
[0014] Figure 3 This is a schematic diagram of the structure of the blowpipe and the porous connecting plate of this utility model.
[0015] Figure 4 This is a schematic diagram of the structure of the cage and filter bag of this utility model.
[0016] Figure 5 This is an enlarged view of the semi-circular pull ring, elastic rope, and counterweight of this utility model.
[0017] Figure 6 This is a schematic diagram of the structure of the venturi tube of this utility model.
[0018] In the attached diagram, the following are the reference numerals: 1_support frame, 2_middle box, 3_upper box, 4_ash hopper, 5_air duct, 6_exhaust fan, 7_air inlet, 8_pulse solenoid valve, 9_air storage tank, 10_top cover, 11_control panel, 12_inspection door, 13_purge pipe, 14_perforated connecting plate, 15_cage frame, 16_filter bag, 17_Venturi tube, 18_semi-circular pull ring, 19_elastic rope, 20_counterweight, 21_guardrail. Detailed Implementation
[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0020] A device for quickly inspecting dust collector filter bags, such as Figures 1-5As shown, the system includes a support frame 1, a middle housing 2, an upper housing 3, a dust hopper 4, an air duct 5, an induced draft fan 6, a pulse solenoid valve 8, an air storage tank 9, a top cover 10, a control panel 11, a blowpipe 13, a perforated connecting plate 14, a cage frame 15, and a filter bag 16. The middle housing 2 is located inside the support frame 1. An air inlet 7 is located on the lower left side of the middle housing 2. A dust hopper 4, which is conical in shape, is located at the bottom of the middle housing 2 to guide and concentrate the falling dust. The upper housing 3 is located on top of the middle housing 2, and a top cover 10 is located on top of the upper housing 3. The top cover 10 is fixed to the upper housing 3 with screws. An air duct 5 is located on the right side of the upper housing 3, and an induced draft fan 6 is located at the right end of the air duct 5. The air duct 5 connects to the interior of the induced draft fan 6. A laser dust detector with a built-in alarm is located on the inner wall of the top outlet of the induced draft fan 6. The front of the upper body 3 is equipped with several pulse solenoid valves 8. The bottom of each pulse solenoid valve 8 is equipped with an air storage tank 9 for storing compressed gas. Each pulse solenoid valve 8 is equipped with a blowpipe 13, and each blowpipe 13 has several air nozzles at its bottom. The upper body 3 is equipped with a perforated connecting plate 14, which has several through holes located directly below each air nozzle. Each through hole has a cage 15 at its bottom, and a filter bag 16 is fitted inside the cage 15. The filter bag 16 and the cage 15 are detachably connected. The front of the middle body 2 is equipped with a control panel 11. The induced draft fan 6, the pulse solenoid valves 8, and the laser dust detector are all electrically connected to the control panel 11. The control panel 11 presets the start time of the pulse solenoid valves 8 and starts each pulse solenoid valve 8 in sequence.
[0021] like Figure 5 As shown, it also includes a semi-circular pull ring 18, an elastic rope 19, and a counterweight 20. Each filter bag 16 has a semi-circular pull ring 18 at its bottom, and an elastic rope 19 is connected to the bottom of the semi-circular pull ring 18. A counterweight 20 is located at the bottom of the elastic rope 19. When the pulse solenoid valve 8 pumps compressed air into the filter bag 16 and causes the filter bag 16 to expand and vibrate, the counterweight 20 moves downward. When the filter bag 16 contracts, the counterweight 20 continues to move downward due to inertia and tightens the elastic rope 19, thereby applying an additional downward force to the filter bag 16. This force is released when the filter bag 16 expands again, forming a stronger vibration and enhancing the vibration effect of the filter bag 16, which is beneficial to improving the dust removal effect.
[0022] like Figure 6 As shown, it also includes a Venturi tube 17. The Venturi tube 17 is provided on the inner wall of the through hole. Through the contraction and expansion structure, the Venturi tube 17 can accelerate the flow rate of compressed air during the blowing process, more effectively impact the filter bag 16, and enhance the dust removal effect.
[0023] like Figure 2As shown, it also includes an inspection door 12. The inspection door 12 is hinged to the front side of the middle box 2. The inspection door 12 allows maintenance personnel to enter the interior of the middle box 2 to facilitate visual inspection or replacement of the components inside the dust collector.
[0024] like Figure 1 As shown, it also includes a guardrail 21. The guardrail 21 is provided on the outer side of the top of the middle box 2, and the guardrail 21 provides a physical barrier for maintenance personnel.
[0025] Start the induced draft fan 6, then input the dust-laden gas into the middle chamber 2 through the air inlet 7. Large dust particles will fall into the dust hopper 4 under the action of gravity, while fine dust particles will be blocked on the outer surface of the filter bags 16. The gas filtered by the filter bags 16 will pass through the bag opening and the upper chamber 3, and finally be discharged through the induced draft fan 6 and the air duct 5. The dust outside the filter bags 16 will continuously increase. After the preset time for starting the device, the pulse solenoid valve 8 will be activated by the control panel 11. Compressed air will be sprayed from the pulse solenoid valve 8 through the air tank 9, and then shot into the through hole through the blowpipe 13. The filter bags 16 will expand and vibrate instantly, causing the fine dust particles on the surface of the filter bags 16 to fall into the dust hopper 4. When the laser dust detector detects the dust content after the pulse solenoid valve 8 has worked, if the dust content suddenly increases, i.e., exceeds the preset value of the average dust content after the pulse solenoid valve 8 has worked, the control panel 11 marks the pulse solenoid valve 8. After a complete cycle, i.e., after each pulse solenoid valve 8 has worked once, the laser dust detector will detect the dust content after the marked pulse solenoid valve 8 has worked again. If the dust content also suddenly increases this time, the laser dust detector will issue an alarm to remind the staff that the filter bag 16 at the bottom of the blowpipe 13 on the pulse solenoid valve 8 is damaged. If the dust content does not suddenly increase this time, the marking of the pulse solenoid valve 8 will be canceled.
[0026] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A device for quickly inspecting dust collector bags for damage, comprising a support frame (1), a middle box (2), an upper box (3), and a dust hopper (4), wherein the middle box (2) is provided inside the support frame (1), an air inlet (7) is provided on the lower left side of the middle box (2), the dust hopper (4) is provided at the bottom of the middle box (2), and the upper box (3) is provided at the top of the middle box (2), characterized in that: It also includes air ducts (5), induced draft fans (6), pulse solenoid valves (8), air tanks (9), top covers (10), control panels (11), blow pipes (13), perforated connecting plates (14), cages (15), and filter bags (16). The top of the upper housing (3) is equipped with a top cover (10). The right side of the upper housing (3) is equipped with air ducts (5). The right end of the air ducts (5) is equipped with an induced draft fan (6). A laser dust detector is installed on the inner wall of the top outlet of the induced draft fan (6). Several pulse solenoid valves (8) are installed on the front side of the upper housing (3). The bottom of the pulse solenoid valves (8) is equipped with air tanks (9). Each pulse solenoid valve (8) is equipped with a blow pipe (13) on the front side. Each blowpipe (13) has several air jets at its bottom. The upper housing (3) has a perforated connecting plate (14) inside. The perforated connecting plate (14) has several through holes, which are located directly below each air jet. Each through hole has a cage (15) at its bottom, and a filter bag (16) is fitted inside the cage (15). The middle housing (2) has a control panel (11) on its front side. The blower (6), pulse solenoid valve (8), and laser dust detector are all electrically connected to the control panel (11). The control panel (11) presets the start time of the pulse solenoid valve (8) and starts each pulse solenoid valve (8) in sequence.
2. The device for quickly inspecting dust collector filter bags according to claim 1, characterized in that: The laser dust detector has a built-in alarm.
3. The device for quickly inspecting dust collector filter bags according to claim 2, characterized in that: It also includes a semi-circular pull ring (18), an elastic rope (19) and a counterweight (20). Each filter bag (16) has a semi-circular pull ring (18) at the bottom, and the bottom of the semi-circular pull ring (18) is connected to an elastic rope (19). The bottom of the elastic rope (19) is equipped with a counterweight (20).
4. The device for quickly inspecting dust collector filter bags according to claim 3, characterized in that: It also includes a Venturi tube (17), and a Venturi tube (17) is provided on the inner wall of the through hole.
5. The device for quickly inspecting dust collector filter bags according to claim 4, characterized in that: It also includes an inspection door (12), which is hinged to the front of the middle box (2).
6. The device for quickly inspecting dust collector filter bags according to claim 5, characterized in that: It also includes guardrails (21), with guardrails (21) provided on the outside of the middle box (2).