A dust collection device for the recycling of rubber scraps

Abstract

This utility model discloses a dust collection device for rubber scrap recycling production, including a rubber scrap crusher, comprising a feeding hopper, a crushing roller located at the bottom of the feeding hopper, a crushing roller drive motor connected to the crushing roller, and a feeding hopper support frame with a control terminal mounted on its upper surface. A dust collection mechanism is provided on one side of the feeding hopper, including a dust collection hood located at the top of the feeding hopper, a medium-pressure centrifugal fan connected to the output port of the dust collection hood, and a dust filtration mechanism. A dust collection pipe is provided at the top center of the dust collection hood, and rubber scrap feeding pipes are provided on the left and right sides of the dust collection hood. This utility model directly connects the dust collection hood to the crusher's feed port, forming a more comprehensive negative pressure zone. By collecting the pressure inside the hood in real time and cooperating with a frequency converter, the fan speed is adjusted instantly to stabilize the air pressure inside the hood. The integrated structure of the dust collection hood, fan, and dust filter eliminates long-distance pipelines, achieving one-time dust collection.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of rubber scrap recycling and production technology. Specifically, it relates to a dust collection device for rubber scrap recycling and production. Background Technology

[0002] Existing rubber scrap crushing production lines generally employ a separate dust collection method consisting of a side-suction hood, long pipeline, and independent dust collector. This method suffers from drawbacks such as dead corners at the hood opening, significant pressure loss due to long pipelines, sudden drops in negative pressure when the feed rate changes, and rubber particles sticking to the walls and causing dust backflow. Ultimately, this results in dust dispersion, secondary pollution of the workshop, and the problem of incomplete collection has remained unresolved for a long time. Therefore, a dust collection device for rubber scrap recycling production with better collection performance is designed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a dust collection device for the recycling of rubber scraps.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model discloses a dust collection device for the recycling of rubber scraps, including a rubber scrap crusher, comprising a feeding hopper, a crushing roller located at the bottom of the feeding hopper, a crushing roller drive motor connected to the crushing roller, and a feeding hopper support frame with a control terminal mounted on its upper surface. A dust collection mechanism is provided on one side of the feeding hopper. The dust collection mechanism includes a dust collection hood located at the top of the feeding hopper, a medium-pressure centrifugal fan connected to the output port of the dust collection hood, and a dust filtration mechanism. A dust collection pipe is provided at the top center of the dust collection hood, and rubber scrap feeding pipes are provided on the left and right sides of the dust collection hood. The dust filtration mechanism includes a housing and a bracket for supporting the housing.

[0005] Preferably, the bottom of the dust collection hood is bolted to the top of the feed hopper, and a rubber sealing ring is provided on the top of the feed hopper. The dust collection hood is designed as an "inverted funnel".

[0006] Preferably, a fluorocarbon coated plate is fixed on the inner wall of the dust collection hood, and the dust collection hood is welded together from several steel plates.

[0007] Preferably, a differential pressure sensor is installed between the dust collection pipe and the rubber scrap feeding pipe, the inlet of the medium-pressure centrifugal fan is connected to the outlet of the dust collection pipe through a dust conduit, and the outlet of the medium-pressure centrifugal fan is connected to the dust filtration mechanism.

[0008] Preferably, the differential pressure sensor is disposed on the top of the dust collection hood, near the dust collection pipe, with its positive pressure end exposed. The surface of the dust collection hood is provided with a pressure tapping hole for mounting the negative pressure end of the differential pressure sensor, and the negative pressure end penetrates through the dust collection hood.

[0009] Preferably, the housing includes an outer shell, a plurality of dust filter elements disposed inside the outer shell, and a diversion pipe. The medium-pressure centrifugal fan is installed on the top of the outer shell, and a frequency converter is disposed near the top outer side of the outer shell. A clean air outlet is provided at the bottom of the outer shell, and the diversion pipe is connected to the medium-pressure centrifugal fan through a connecting pipe.

[0010] Preferably, the front and rear ends of the connecting pipe are fixed to the inner wall of the outer casing, the inlet of the connecting pipe is connected to the outlet of the medium-pressure centrifugal fan, the outlet of the connecting pipe is connected to the inlet of the diversion pipe, the number of outlets of the diversion pipe is the same as the number of dust filter elements, and the outlet of the diversion pipe extends into the top of the dust filter element.

[0011] Preferably, the frequency converter is screwed to the outside of the housing, the differential pressure sensor is connected point-to-point to the analog input terminal of the frequency converter via a two-core shielded cable, the output terminal of the frequency converter is electrically connected to the motor terminal of the medium-pressure centrifugal fan via a three-core power cable, and the frequency converter and the control terminal are connected via a two-core shielded cable using the Modbus RTU protocol for communication.

[0012] Preferably, a hanging steel frame is fixed to the top of the dust filter element, and a fixing plate for supporting the hanging steel frame is fixed inside the outer shell, and the top of the hanging steel frame is designed to be bent.

[0013] Preferably, the dust filter element is made of nanofiber membrane material.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention directly connects the dust collection hood to the crusher's feed inlet, creating a more comprehensive negative pressure zone. By collecting the pressure inside the hood in real time and cooperating with a frequency converter, the fan speed is adjusted instantly, stabilizing the air pressure inside the hood. The integrated structure of the dust collection hood, fan, and dust filter eliminates the need for long-distance pipelines, achieving one-time dust collection and completely solving the problem of incomplete dust collection in existing dust collection devices.

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a disassembly diagram of the present invention; Figure 3 This is a partial structural schematic diagram of the dust filtration mechanism of this utility model; Figure 4 This is an enlarged view of part A of the partial structural schematic diagram of the dust filtration mechanism of this utility model; Figure 5 This is a connection block diagram of the control terminal of this utility model; In the diagram: 1. Rubber scrap crusher; 11. Feed hopper; 12. Crushing roller drive motor; 13. Crushing roller; 14. Feed hopper support frame; 15. Control terminal. 2. Dust collection mechanism; 21. Dust collection hood; 211. Rubber scrap feed pipe; 212. Dust collection pipe; 213. Differential pressure sensor; 22. Medium-pressure centrifugal fan; 23. Frequency converter; 24. Housing; 241. Outer shell; 242. Dust filter element; 243. Connecting pipe; 244. Diverter pipe; 245. Fixing plate; 246. Suspension steel frame; 25. Dust duct; 26. Clean air outlet; 27. Support. Detailed Implementation

[0018] like Figure 1-5As shown, this utility model provides a dust collection device for the recycling of rubber scraps, including a rubber scrap crusher 1, comprising a feeding bin 11, a crushing roller 13 located at the bottom of the feeding bin 11, a crushing roller drive motor 12 connected to the crushing roller 13, and a feeding bin support frame 14 with a control terminal 15 mounted on its upper surface. A dust collection mechanism 2 is provided on one side of the feeding bin 11. The dust collection mechanism 2 includes a dust collection hood 21 located at the top of the feeding bin 11, a medium-pressure centrifugal fan 22 connected to the output port of the dust collection hood 21, and a dust filtration mechanism. A dust collection pipe 212 is provided at the top center of the dust collection hood 21, and rubber scrap feeding pipes 211 are provided on the left and right sides of the dust collection hood 21. The dust filtration mechanism includes a housing 24 and a bracket 27 for supporting the housing 24.

[0019] Furthermore, in this embodiment, the bottom of the dust collection hood 21 is bolted to the top of the feeding hopper 11, and a rubber sealing ring is provided on the top of the feeding hopper 11. The rubber sealing ring improves the sealing between the dust collection hood 21 and the feeding hopper 11, reducing dust leakage. The dust collection hood 21 has an "inverted funnel" design, such as an upper opening of 200mm and a lower opening of 350mm*250mm, which facilitates dust collection.

[0020] In this embodiment, a fluorocarbon coated plate is fixed on the inner wall of the dust collection hood 21. The dust collection hood 21 is welded from several steel plates, so that when the rubber is broken, the high-elasticity particles will hit the inner wall of the dust collection hood 21. The rubber fragments will slide off immediately after impact through the fluorocarbon coated plate on the inner wall and will not stick to the inner wall.

[0021] In this embodiment, a differential pressure sensor 213 is installed between the dust collection pipe 212 and the rubber scrap feed pipe 211. The input port of the medium-pressure centrifugal fan 22 is connected to the output port of the dust collection pipe 212 through a dust conduit 25. The output port of the medium-pressure centrifugal fan 22 is connected to the dust filtration mechanism. After the medium-pressure centrifugal fan 22 is started, the dust can enter the dust collection pipe 212 through the dust collection hood 21, pass through the dust conduit 25 and the central centrifugal fan, and enter the dust filtration mechanism.

[0022] It should be noted that the dusty airflow passes directly through the impeller channel. The impeller and the inner wall of the casing are treated with wear-resistant coating or wear-resistant steel lining to prevent the rubber particles from eroding and causing wear at high speed. At the same time, the fan is designed with backward blades to avoid fibrous rubber from getting tangled in the impeller.

[0023] In this embodiment, the differential pressure sensor 213 is disposed on the top of the dust collection hood 21, near the dust collection pipe 212, with its positive pressure end exposed. The surface of the dust collection hood 21 is provided with a pressure tapping hole for the negative pressure end of the differential pressure sensor 213 to be installed. The negative pressure end penetrates through the dust collection hood 21, and the air pressure inside the dust collection hood 21 is detected through the negative pressure end. The positive pressure end is used to detect atmospheric pressure. The negative pressure value of the dust collection hood 21 is obtained by the air pressure difference between the dust collection hood 21 and the atmospheric pressure.

[0024] In this embodiment, the housing 24 includes an outer shell 241, a plurality of dust filter elements 242 disposed inside the outer shell 241, and a diversion pipe 244. A medium-pressure centrifugal fan 22 is installed on the top of the outer shell 241. A frequency converter 23 is disposed near the top outer side of the outer shell 241. A clean air outlet 26 is opened at the bottom of the outer shell 241, through which filtered dust is discharged. A bracket 27 for supporting the outer shell 241 is also welded at the bottom. The diversion pipe 244 is connected to the medium-pressure centrifugal fan 22 through a connecting pipe 243. The dust passing through the medium-pressure centrifugal fan 22 is introduced into the diversion pipe 244 through the connecting pipe 243 and diverted through the diversion pipe 244.

[0025] In this embodiment, the front and rear ends of the connecting pipe 243 are fixed to the inner wall of the outer casing 241. The inlet of the connecting pipe 243 is connected to the outlet of the medium-pressure centrifugal fan 22, and the outlet of the connecting pipe 243 is connected to the inlet of the diversion pipe 244. The number of outlets of the diversion pipe 244 is the same as the number of dust filter elements 242, and the outlets of the diversion pipe 244 extend into the top of the dust filter element 242. The diversion pipe 244 outlets are designed to guide dust into the dust filter element 242 for filtration.

[0026] In this embodiment, the frequency converter 23 is screwed to the outside of the housing 241. The differential pressure sensor 213 is connected point-to-point to the analog input terminal of the frequency converter 23 through a two-core shielded cable (4-20mA analog signal) to provide real-time feedback on the air pressure inside the dust collection hood 21. The output terminal of the frequency converter 23 is electrically connected to the motor terminal of the medium-pressure centrifugal fan 22 through a three-core power cable to drive the fan. The frequency converter 23 and the control terminal 15 are connected via a two-core shielded cable using the Modbus RTU protocol to realize functions such as start / stop, setpoint issuance, and reading of operating parameters.

[0027] The control terminal 15 includes a controller, a communicator, and a power controller. The communicator and the power controller are electrically connected to the controller via wires. The power controller is connected to the control circuit of the frequency converter 23 via a relay circuit and is used for power-on / power-off operations of the frequency converter 23. The communication device supports 4G, 5G, and WIFI communication.

[0028] In this embodiment, a hanging steel frame 246 is fixed to the top of the dust filter element 242, and a fixing plate 245 for mounting the hanging steel frame 246 is fixed inside the outer shell 241. The top of the hanging steel frame 246 is bent. The hanging steel frame 246 is fixed to the top of the inner wall of the dust filter element 242. The design of the top of the hanging steel frame 246 allows the dust filter element 242 to be suspended on the fixing plate 245, which facilitates the maintenance and replacement of the dust filter element 242.

[0029] In this embodiment, the dust filter element is made of nanofiber membrane material / waterproof and oil-proof PTFE membrane, which can filter the dust generated during the crushing of rubber scraps.

[0030] Specifically, dust is generated when the rubber scrap crusher 1 crushes the rubber scrap. The dust collection process is as follows: S1, check whether the entire channel of feed hopper 11, dust collection hood 21, dust collection pipe 212, dust duct 25, medium pressure centrifugal fan 22, and dust filter mechanism is sealed, confirm that the valve of clean air outlet 26 is open, confirm that the dust filter element is suspended in place, and that the suspension steel frame 246 is inserted into the fixing plate 245. Power on the terminal machine 15 with one key, the power controller is closed, and the frequency converter 23 is powered on and in standby mode. S2, the control terminal 15 presets the target negative pressure value to the frequency converter 23. After the frequency converter 23 performs a self-test without faults, it starts the medium-pressure centrifugal fan 22 to run at low speed for 10 seconds. The differential pressure sensor 213 feeds back the air pressure in the dust collection hood 21 to the frequency converter 23 in real time. The frequency converter 23 has a built-in PID to adjust the speed of the medium-pressure centrifugal fan 22 so that the negative pressure in the dust collection hood 21 is stabilized at the target negative pressure value. S3, rubber scraps enter the feed hopper 11 through the feed pipe, and are crushed by the crushing roller drive motor 12 controlling the rotation of the crushing roller 13 to generate dust. The dust is drawn away in the dust collection hood 21. The high-elastic particles slide off immediately after impacting the fluorocarbon coated plate and do not stick to the wall. The dust-laden air passes through the dust collection pipe 212-dust duct 25-medium pressure centrifugal fan 22 inlet. The dust-laden airflow enters the connecting pipe 243 from the fan outlet. The connecting pipe 243 evenly guides the airflow into the diversion pipe 244. Each outlet of the diversion pipe 244 is directly opposite the top of a dust filter element to achieve equal diversion. The dust filter element intercepts the dust on the outer surface. Clean air passes through the filter element and is discharged from the clean air outlet 26 at the bottom of the outer side. S4, stop feeding, crushing roller 13 continues to run idle to remove residual dust, control terminal 15 controls frequency converter 23 to decelerate to zero and then cuts off the output, power controller relay disconnects, frequency converter 23 is powered off, and one operation cycle is completed.

[0031] It should be noted that the model, power, air volume, and other parameters of the aforementioned crushers, fans, and other equipment need to be selected reasonably based on the actual situation of the production line, therefore detailed parameters are not disclosed.

[0032] The components of this utility model, such as the rubber scrap crusher 1, control terminal 15, differential pressure sensor 213, medium-pressure centrifugal fan 22, frequency converter 23, and dust filter element 242, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0033] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust collection device for rubber scrap recycling production, comprising a rubber scrap crusher (1), including a feed bin (11), a crushing roller (13) located on the bottom side of the feed bin (11), a crushing roller drive motor (12) connected to the crushing roller (13) in a transmission, and a feed bin support frame (14) with a control terminal (15) mounted on its upper surface, characterized in that, A dust collection mechanism (2) is provided on one side of the feeding hopper (11). The dust collection mechanism (2) includes a dust collection hood (21) located on the top of the feeding hopper (11), a medium-pressure centrifugal fan (22) connected to the output port of the dust collection hood (21), and a dust filtration mechanism. A dust collection pipe (212) is provided at the top center of the dust collection hood (21), and rubber scrap material feeding pipes (211) are provided on the left / right sides of the dust collection hood (21). The dust filtration mechanism includes a box (24) and a bracket (27) for supporting the box (24).

2. The dust collection device for rubber scrap recycling production according to claim 1, characterized in that, The bottom of the dust collection hood (21) is bolted to the top of the feed hopper (11), and a rubber sealing ring is provided on the top of the feed hopper (11). The dust collection hood (21) is designed as an "inverted funnel".

3. The dust collection device for rubber scrap recycling production according to claim 2, characterized in that, The inner wall of the dust collection hood (21) is fixed with a fluorocarbon coated plate, and the dust collection hood (21) is welded together from several steel plates.

4. A dust collection device for rubber scrap recycling production according to claim 3, characterized in that, A differential pressure sensor (213) is provided between the dust collection pipe (212) and the rubber scrap feed pipe (211). The input port of the medium-pressure centrifugal fan (22) is connected to the output port of the dust collection pipe (212) through a dust conduit (25). The output port of the medium-pressure centrifugal fan (22) is connected to the dust filtration mechanism.

5. A dust collection device for rubber scrap recycling production according to claim 4, characterized in that, The differential pressure sensor (213) is located on the top of the dust collection hood (21) near the dust collection pipe (212), with its positive pressure end exposed. The surface of the dust collection hood (21) is provided with a pressure tapping hole for the negative pressure end of the differential pressure sensor (213) to be installed, and the negative pressure end penetrates the dust collection hood (21).

6. A dust collection device for rubber scrap recycling production according to claim 5, characterized in that, The housing (24) includes an outer shell (241), several dust filter elements (242) disposed inside the outer shell (241), and a diversion pipe (244). The medium-pressure centrifugal fan (22) is installed on the top of the outer shell (241). A frequency converter (23) is disposed near the top outer side of the outer shell (241). A clean air outlet (26) is opened at the bottom of the outer shell (241). The diversion pipe (244) is connected to the medium-pressure centrifugal fan (22) through a connecting pipe (243).

7. A dust collection device for rubber scrap recycling production according to claim 6, characterized in that, The front and rear ends of the connecting pipe (243) are fixed on the inner wall of the outer shell (241). The inlet of the connecting pipe (243) is connected to the outlet of the medium-pressure centrifugal fan (22). The outlet of the connecting pipe (243) is connected to the inlet of the diversion pipe (244). The number of outlets of the diversion pipe (244) is the same as the number of dust filter elements (242), and the outlet of the diversion pipe (244) extends into the top of the dust filter element (242).

8. A dust collection device for rubber scrap recycling production according to claim 7, characterized in that, The inverter (23) is screwed to the outside of the housing (241). The differential pressure sensor (213) is connected point-to-point to the analog input terminal of the inverter (23) through a two-core shielded cable. The output terminal of the inverter (23) is electrically connected to the motor terminal of the medium-pressure centrifugal fan (22) through a three-core power cable. The inverter (23) and the control terminal (15) are connected to communicate via a two-core shielded cable using the Modbus RTU protocol.

9. A dust collection device for rubber scrap recycling production according to claim 8, characterized in that, The dust filter element (242) is fixed with a hanging steel frame (246) at the top, and the housing (241) is fixed with a fixing plate (245) for mounting the hanging steel frame (246) inside. The top of the hanging steel frame (246) is a bent design.

10. A dust collection device for rubber scrap recycling production according to claim 9, characterized in that, The dust filter element is made of nanofiber membrane material.

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