Dust explosion protection system for chemical workshop

Abstract

The utility model relates to a dust explosion protection system for a chemical workshop. The dust explosion protection system comprises a dust removal assembly and a spraying assembly, the dust removal assembly comprises a dust removal box, an air inlet pipe and an air outlet pipe are connected to the dust removal box, a filter cloth frame and a screen plate are installed on the inner wall of the dust removal box, a plurality of pieces of filter cloth are connected between the filter cloth frame and the screen plate, an exhaust fan is installed in the dust removal box, a transmission rod penetrates through the center of the exhaust fan, and a driving motor is installed on the outer side of the dust removal box; a worm is in butt joint with the driving motor, a turbine is meshed with the worm, and the turbine is in butt joint with the transmission rod; the spraying assembly comprises a piston pump, a water inlet pipe and a water outlet pipe are in butt joint with the piston pump, the piston pump comprises a pump shell, a rotary disc is installed in the pump shell, a connecting rod is hinged to the rotary disc, a piston is hinged to the connecting rod, a rotary shaft penetrates through the center of the rotary disc, a first gear is in butt joint with the rotary shaft, a second gear is meshed with the first gear, and the second gear is in butt joint with a worm. And the driving motor can drive the piston pump to operate while driving the draft fan to operate.

Description

Technical Field

[0001] This utility model belongs to the field of safety protection equipment technology, specifically relating to a dust explosion protection system for chemical workshops. Background Technology

[0002] In chemical production processes, large quantities of combustible dust, such as plastic powder and pesticide dust, are processed, stored, and transported. When this dust accumulates in the workshop and reaches its explosive limit, it can easily trigger a dust explosion if it encounters a source of ignition or energy. A dust explosion seriously threatens the lives of personnel and the safety of company property.

[0003] Currently, although some chemical workshops are equipped with dust control equipment, most of this equipment is relatively basic and has low dust removal efficiency, making it difficult to effectively control dust concentration within the workshop. Once dust concentration gets out of control, existing dust collection equipment cannot quickly and effectively handle the dust, causing the dust concentration to rise continuously and exposing the workshop to extremely high explosion risks, failing to meet the stringent safety protection requirements of chemical production. Given the increasingly stringent safety requirements in chemical production, this traditional equipment is clearly inadequate, and a more efficient dust control and explosion protection technology is urgently needed to ensure production safety and the safety of personnel and property. Utility Model Content

[0004] The purpose of this invention is to provide a dust explosion protection system for chemical workshops, which can spray explosion suppressant on the workshop while removing dust.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a dust explosion protection system for a chemical workshop, including a workshop, with a dust removal component and a spray component installed at the top of the workshop;

[0006] The dust removal assembly includes a dust removal box, an air inlet pipe and an air outlet pipe connected to the dust removal box, a number of dust suction ports connected to the air inlet pipe, a filter cloth frame and a screen plate installed on the inner wall of the dust removal box, a number of filter cloths connected between the filter cloth frame and the screen plate, an exhaust fan installed inside the dust removal box, a transmission rod passing through the center of the exhaust fan, a drive motor installed on the outside of the dust removal box, a worm gear connected to the drive motor, a worm wheel meshing on the worm gear, and the worm wheel connected to the transmission rod.

[0007] The spray assembly includes a piston pump, with an inlet pipe and an outlet pipe connected to the piston pump. The inlet pipe is connected to a water storage tank, and several nozzles are installed on the outlet pipe. The piston pump includes a pump housing, with a turntable installed inside the pump housing. A connecting rod is hinged to the turntable, and a piston is hinged to the connecting rod. A rotating shaft passes through the center of the turntable, and a first gear is connected to the rotating shaft. A second gear meshes with the first gear, and the second gear is connected to a worm gear.

[0008] The drive motor drives the exhaust fan to operate, and at the same time, it drives the piston pump to operate.

[0009] Furthermore, the walls of the workshop are explosion-proof walls, and several explosion-proof doors are installed on the walls of the workshop. Several ventilation fans are installed on the outer side of the top of the workshop, and several dust concentration detectors are installed inside the workshop.

[0010] Furthermore, the dust collector is provided with an air inlet and an air outlet, with an air inlet pipe and an air outlet pipe respectively installed at the air inlet and air outlet. The air outlet pipe is located at the top of the dust collector, and the air inlet pipe is located on one side of the dust collector.

[0011] Furthermore, the filter cloth is installed on one side of the air inlet of the dust collector, the exhaust fan is installed inside the air outlet of the dust collector, and a dust collection box is installed below the filter cloth, which is fixedly installed on the bottom surface inside the dust collector.

[0012] Furthermore, a main sprocket is connected to the drive motor, and several rotating rods are rotatably installed on the inner wall of the dust collector. These rotating rods are inserted between several filter cloths, and cams are provided on the rotating rods so that they can contact the filter cloths.

[0013] Furthermore, a small gear is installed at the top of the rotating rod, and two adjacent small gears mesh with each other. A driven sprocket is installed on one of the rotating rods, and a chain connects the main sprocket and the driven sprocket.

[0014] Furthermore, the water storage tank is fixedly installed outside the workshop, a switch valve is installed between the water inlet pipe and the water storage tank, and several nozzles are distributed in a linear array along the water outlet pipe, with the nozzles located on the ceiling inside the workshop.

[0015] Furthermore, the lower end of the pump casing is a cylindrical cavity, and the piston is located inside the cavity. The outer diameter of the piston is matched with the inner diameter of the cavity, and the piston is tightly fitted to the cavity wall. The piston can make vertical reciprocating motion inside the cavity.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: A dust concentration detector monitors the dust concentration in the workshop. When the dust concentration exceeds the standard, the drive motor is activated, rotating the worm gear, which in turn drives the exhaust fan. This causes the dust-laden air to flow through the workshop's suction port and inlet pipe to the dust collection box, and the air, after being filtered through the filter cloth, flows out through the outlet pipe. Simultaneously, while the drive motor drives the exhaust fan, it also drives several rotating rods and cams to rotate synchronously via a chain drive structure and pinion gear, causing the dust adsorbed on the filter cloth to fall into the dust collection box. Meanwhile, when the drive motor drives the worm gear to rotate, the meshing relationship between the first gear and the second gear drives the turntable to rotate. When the turntable rotates, the connecting rod will swing along with the rotation of the turntable. The connecting rod drives the piston to make vertical reciprocating motion in the pump casing chamber, which extracts the explosion suppressant from the water tank and sprays the explosion suppressant. The explosion suppressant may quickly adsorb and condense the dust particles suspended in the workshop air, causing the dust to settle to the ground or object surface, effectively reducing the dust concentration in the air.

[0017] This invention can vacuum up dust in the workshop when the dust concentration exceeds the standard or when there is a potential hazard. At the same time, it can spray explosion suppressant in the workshop to reduce dust and reduce the risk of dust explosion, creating a safe and stable environment for workshop production and effectively protecting the safety of enterprise property and the life and health of employees. 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 internal structure of the workshop according to this utility model;

[0020] Figure 3 This is a schematic diagram showing the positional relationship between the dust collection component and the spray component of this utility model;

[0021] Figure 4 This is a schematic diagram of the dust collection component structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the spray assembly structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the connection relationship between the dust collection component and the spray component of this utility model;

[0024] Among them, 100-workshop, 101-ventilation fan, 201-dust collector, 202-air inlet pipe, 203-air outlet pipe, 204-dust suction port, 205-filter cloth frame, 206-filter cloth, 207-exhaust fan, 208-transmission rod, 209-drive motor, 210-worm gear, 211-worm wheel, 212-rotating rod, 213-cam, 214-pinion, 215-chain, 216-dust collection box, 217-screen plate, 301-piston pump, 302-water inlet pipe, 303-water outlet pipe, 304-water storage tank, 305-nozzle, 306-pump casing, 307-turntable, 308-connecting rod, 309-piston, 310-rotating shaft, 311-first gear, 312-second gear, 313-switch valve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It should be understood that the preferred embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. In the embodiments, the components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to an electrical connection; they can refer to a hydraulic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] Reference Figure 1The aforementioned dust explosion protection system for a chemical workshop includes a workshop 100. The walls of workshop 100 are explosion-proof, and several explosion-proof doors are installed on the walls. Several ventilation fans 101 are installed on the outer top of the workshop 100 to ensure ventilation. Several dust concentration detectors are installed inside the workshop 100 to detect the dust concentration. These detectors are specifically installed on the top of the workshop 100 and above or around equipment that easily generates dust. When the detected dust concentration exceeds a set value, the dust in the workshop 100 needs to be treated to prevent an explosion.

[0028] Reference Figure 2-3 To handle dust in workshop 100, a dust collection system is installed at the top of workshop 100 to remove dust. A spray system is installed on one side of the dust collection system to spray an explosion suppressant into the workshop. The droplets formed after the explosion suppressant is sprayed can adsorb and agglomerate suspended dust particles in the air, causing the dust to settle from the gas phase to the ground or other object surfaces, thereby reducing the dust concentration in the air within workshop 100 and minimizing the risk of dust explosion. When the dust concentration exceeds the standard, the dust concentration detector issues a command. At this time, the dust collection system and spray system can be manually activated or controlled by a program.

[0029] Specifically, the dust collection assembly includes a rectangular dust collection box 201, which is fixedly installed on the outer top of the workshop 100. The dust collection box 201 has an air inlet and an air outlet, which are respectively connected to an air inlet pipe 202 and an air outlet pipe 203. The air outlet pipe 203 is located at the top of the dust collection box 201. The air inlet pipe 202 is located on one side of the dust collection box 201, and several suction ports 204 are connected to it. The suction ports 204 pass through the outer top of the workshop 100 and extend to the inner top of the workshop 100, thereby collecting dust within the workshop 100.

[0030] Reference Figure 4-6 As described above, a filter cloth frame 205 is fixedly installed at the upper part of the dust collector 201. The filter cloth frame 205 is installed on one side of the air inlet of the dust collector 201. A screen plate 217 is installed in the middle of the dust collector 201, located below and parallel to the filter cloth frame 205. Several filter cloths 206 made of fibrous material are connected between the filter cloth frame 205 and the screen plate 217. The filter cloths 206 are parallel to each other and linearly distributed along the length of the filter cloth frame 205. Dust can be filtered through the filter cloths 206. When the dust-laden airflow passes through the dust collector 301, the filter cloths 306 can adsorb the dust particles in the airflow, thereby achieving gas-solid separation and effectively reducing the dust concentration in the workshop 100.

[0031] An exhaust fan 207 is installed inside the air outlet of the dust collector 201. The exhaust fan 207 is located at the rear end of the last filter cloth 206. A transmission rod 208 passes through the center of the exhaust fan 207. The transmission rod 208 is horizontally installed inside the dust collector 201, with one end mounted on the inner wall of the dust collector 201. A drive motor 209 is installed on the outside of the dust collector 201. A worm gear 210 is connected to the output shaft of the drive motor 209. The worm gear 210 is located inside the dust collector 201, with both ends extending out of the dust collector 201. The other end of the worm gear 210 is connected to the spray assembly. A worm wheel 211 meshes with the worm gear 210, and the worm wheel 211 is connected to the transmission rod 208. The drive motor 209 can drive the worm gear 211 and worm 210 to rotate, thereby driving the exhaust fan 207 to rotate, so that the dust-laden air is drawn into the dust inlet 204 and flows along the air inlet pipe 202 to the dust collection box 201. The air treated by the filter cloth 206 flows out through the air outlet pipe 203.

[0032] In addition, a main sprocket is fixedly mounted on the output shaft of the drive motor 209, located inside the dust collector 201. Several rotating rods 212 are rotatably mounted between the two inner walls of the dust collector 201, interlacing between several filter cloths 206. Cams 213 are mounted on each rotating rod 212, allowing them to contact the filter cloths 206. A pinion 214 is mounted at the top of each rotating rod 212, with adjacent pinions 214 meshing. A driven sprocket is mounted on the rotating rod 212 closest to the fan. A chain 215 connects the main sprocket and the driven sprocket. The drive motor 209, through the chain drive structure, drives the rotating rods 212 to rotate synchronously with the pinions 214, causing the cams 213 to rotate as well. When the cams 213 rotate to the position contacting the filter cloths 206, they exert a squeezing and pushing action on the filter cloths 206, making it easier for dust adsorbed on the filter cloths 206 to fall off. A dust collection box 216 is installed below several filter cloths 206. The dust collection box 216 is fixedly installed on the bottom surface inside the dust collector 201. Dust falling off the filter cloths 206 can pass through the screen plate 217 and fall into the dust collection box 216.

[0033] The aforementioned spray assembly includes a piston pump 301, which is fixedly installed on one side of the dust collection box 201. An inlet pipe 302 and an outlet pipe 303 are connected to the piston pump 301. The end of the inlet pipe 302 is connected to a water storage tank 304, which is fixedly installed on the outside of the workshop 100. A switch valve 303 is installed between the inlet pipe 302 and the water storage tank 304. Several nozzles 305 are installed on the outlet pipe 303, arranged in a linear array along the outlet pipe 303. The nozzles 305 are located on the ceiling inside the workshop 100.

[0034] The piston pump 301 includes a pump housing 306, with a cylindrical cavity at the lower end of the housing 306. An inlet pipe 302 and an outlet pipe 303 are located at the lower end of this cavity. A rotary disc 307 is installed inside the pump housing 306. A connecting rod 308 is hinged to an eccentric position on the edge of the disc 307. A piston 309 is hinged to the other end of the connecting rod 308. The piston 309 is located within the cavity at the lower end of the pump housing 306. The outer diameter of the piston 309 matches the inner diameter of the cavity, and the piston 309 fits tightly against the cavity wall. The piston 309 forms a relatively independent space within the cavity, facilitating the intake and discharge of liquid. The piston 309 can perform reciprocating linear motion within the cavity.

[0035] A rotating shaft 310 runs through the center of the turntable 307. A first gear 311 is connected to the other end of the shaft 310, and a second gear 312 meshes with the first gear 311. The second gear 312 is connected to the other end of the worm gear 210. When the drive motor 209 drives the worm gear 210, it drives the second gear 312, which meshes with it, to rotate via the first gear 311. This causes the rotating shaft 310 and the turntable 307 to rotate. Since one end of the connecting rod 308 is hinged to an eccentric position on the turntable 307, when the turntable 307 rotates, the connecting rod 308 will swing along with the rotation of the turntable 307, thereby driving the piston 309 to perform vertical reciprocating motion within the pump housing 306.

[0036] When piston 309 moves upward, the volume of the space below piston 309 increases, the pressure decreases, and a negative pressure is formed. At this time, the liquid in the inlet pipe 302 is drawn back into the cavity, realizing the liquid intake process. When piston 309 moves downward, the volume of the space below piston 309 decreases, the pressure increases, the liquid is squeezed, and is discharged from the cavity through the outlet pipe 303 and then discharged through the nozzle 305. This cycle repeats, allowing the explosion suppressant to be drawn from the water tank 304 and sprayed into workshop 100 through the nozzles to suppress dust in workshop 100.

[0037] It should be noted that there are several sets of dust removal and spraying components, all installed at the top of the workshop 100, and each set is spaced a certain distance apart. When the dust concentration in a certain area increases or there is a potential explosion risk, the corresponding component can be activated individually to form a local purification and protection space, preventing dust, deflagration, and other situations from spreading to other areas, achieving effective isolation and improving the accuracy of safety protection.

[0038] 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 primarily defined by the scope of the claims.

Claims

1. A dust explosion protection system for chemical workshops, characterized in that: This includes a workshop, with dust removal and spray systems installed on the ceiling. The dust removal assembly includes a dust removal box, an air inlet pipe and an air outlet pipe connected to the dust removal box, a number of dust suction ports connected to the air inlet pipe, a filter cloth frame and a screen plate installed on the inner wall of the dust removal box, a number of filter cloths connected between the filter cloth frame and the screen plate, an exhaust fan installed inside the dust removal box, a transmission rod passing through the center of the exhaust fan, a drive motor installed on the outside of the dust removal box, a worm gear connected to the drive motor, a worm wheel meshing on the worm gear, and the worm wheel connected to the transmission rod. The spray assembly includes a piston pump, with an inlet pipe and an outlet pipe connected to the piston pump. The inlet pipe is connected to a water storage tank, and several nozzles are installed on the outlet pipe. The piston pump includes a pump housing, with a turntable installed inside the pump housing. A connecting rod is hinged to the turntable, and a piston is hinged to the connecting rod. A rotating shaft passes through the center of the turntable, and a first gear is connected to the rotating shaft. A second gear meshes with the first gear, and the second gear is connected to a worm gear. The drive motor drives the exhaust fan to operate, and at the same time, it drives the piston pump to operate.

2. The dust explosion protection system for a chemical workshop according to claim 1, characterized in that: The workshop walls are explosion-proof walls, and several explosion-proof doors are installed on the walls. Several ventilation fans are installed on the outer side of the workshop ceiling, and several dust concentration detectors are installed inside the workshop.

3. The dust explosion protection system for chemical workshops according to claim 1, characterized in that: The dust collector is equipped with an air inlet and an air outlet. An air inlet pipe and an air outlet pipe are installed at the air inlet and air outlet respectively. The air outlet pipe is located at the top of the dust collector, and the air inlet pipe is located on one side of the dust collector.

4. The dust explosion protection system for a chemical workshop according to claim 1, characterized in that: The filter cloth is installed on one side of the air inlet of the dust collector, the exhaust fan is installed inside the air outlet of the dust collector, and a dust collection box is installed below the filter cloth. The dust collection box is fixedly installed on the bottom surface inside the dust collector.

5. A dust explosion protection system for chemical workshops according to claim 1, characterized in that: The drive motor is connected to a main sprocket, and several rotating rods are rotatably installed on the inner wall of the dust collector. The rotating rods are inserted between several filter cloths, and cams are provided on the rotating rods so that they can contact the filter cloths.

6. A dust explosion protection system for chemical workshops according to claim 5, characterized in that: A small gear is installed at the top of the rotating rod, and two adjacent small gears mesh with each other. A sprocket is installed on one of the rotating rods, and a chain connects the main sprocket and the sprocket.

7. A dust explosion protection system for chemical workshops according to claim 1, characterized in that: The water storage tank is fixedly installed outside the workshop. A switch valve is installed between the water inlet pipe and the water storage tank. Several nozzles are distributed in a linear array along the water outlet pipe. The nozzles are located on the ceiling inside the workshop.

8. A dust explosion protection system for chemical workshops according to claim 1, characterized in that: The lower end of the pump casing is a cylindrical cavity, and the piston is located inside the cavity. The outer diameter of the piston is matched with the inner diameter of the cavity, and the piston is in close contact with the cavity wall. The piston can make vertical reciprocating motion inside the cavity.

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