A dust removal device for a crusher used in activated carbon production

Abstract

This application proposes a dust removal device for a crusher used in activated carbon production, located between the crusher and the screw conveyor. The device includes: a dust removal chamber connected to the crusher's discharge port; a first screen plate horizontally movably embedded within the dust removal chamber, with its front end extending to form a handle; a second screen plate pivotally mounted to the dust removal chamber via a fixed column; the screen holes of the first and second screen plates are equidistantly arranged along the front-to-back direction, and the offset movement of the two screen plates is equal to the distance between adjacent screen holes, forming an alternately opening and closing sealed space; and a negative pressure dust collection unit located at the bottom of the dust removal chamber. This application, by setting two offset screen plates to create an alternately opening and closing sealed space in the dust removal chamber and equipping it with a negative pressure dust collection unit, removes dust from excessively crushed fine powder, solving the problem in the prior art where fine powder not only obstructs material transport in jaw crushers but also causes abnormally high energy consumption in screw conveyors.

Description

Technical Field

[0001] This utility model relates to the technical field of dust removal devices for crushers, and in particular to a dust removal device for crushers used in activated carbon production. Background Technology

[0002] In the initial stage of activated carbon preparation, a jaw crusher is needed to crush different raw materials (such as coal, asphalt, etc.) to complete the pre-crushing preparation work of the raw materials.

[0003] However, traditional jaw crushers are difficult to control the degree of crushing of raw materials. In actual use, the impact crushing mechanism of jaw crushers can easily cause the particle size of raw materials to get out of control, and the high-frequency extrusion action will lead to the generation of fine powder. As the powdery raw materials continue to accumulate in the screw conveyor, the fine powder will form a friction layer between the screw blades and the pipe wall. This will not only obstruct the material transmission, but also cause the energy consumption of the screw conveyor to rise abnormally. In severe cases, it may cause the motor to burn out due to overload, the screw shaft to break, or even require shutdown for maintenance, affecting production efficiency.

[0004] Therefore, it is necessary to remove dust from the powder generated by excessive crushing in order to improve the safety of the crusher during long-term operation. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that when using a jaw crusher to crush raw materials for the preparation of activated carbon, micro powder is generated, which not only obstructs the material transmission of the jaw crusher, but also causes the energy consumption of the screw conveyor to rise abnormally.

[0006] To achieve the above objectives, this application proposes a dust removal device for a crusher used in activated carbon production, disposed between the crusher and the screw conveyor, comprising:

[0007] A dust collection bin connected to the discharge port of the crusher;

[0008] A first screen plate is horizontally movable and embedded in the dust removal chamber, with the front end of the first screen plate extending to form a handle; a second screen plate is pivotally installed in the dust removal chamber via a fixed column; the screen holes of the first screen plate and the second screen plate are equidistantly arranged in the front-back direction, and the offset movement of the two screen plates is equal to the distance between adjacent screen holes, forming an alternately opening and closing sealed space.

[0009] The negative pressure dust collection unit is located at the bottom of the dust collection chamber.

[0010] The dust removal device for the crusher used in activated carbon production disclosed in this application creates a closed space in the dust removal chamber by setting two screen plates that can be moved in a staggered manner, and is equipped with a negative pressure dust collection unit to remove dust from the excessively crushed fine powder. This solves the problem in the prior art that when using a jaw crusher to crush the raw materials for activated carbon production, the fine powder generated not only obstructs the material transmission of the jaw crusher, but also causes the energy consumption of the screw conveyor to rise abnormally.

[0011] To further remove residual micropowder from the surface of the first filter plate, the fixed column is equipped with a servo motor that drives the sieve plate to rotate 180°.

[0012] Furthermore, in order to reduce the accuracy of the relative movement between the first screen plate and the second screen plate, the switching device includes: T-shaped grooves disposed on both sides of the first screen plate, a bearing assembly connected to the bottom of the second screen plate, and a T-shaped slider that fits into the slide rail.

[0013] Furthermore, in order to enhance the wear resistance of the T-shaped groove, the inner wall of the T-shaped groove is provided with a polytetrafluoroethylene wear-resistant layer.

[0014] Furthermore, in order to enable the bearing assembly to operate stably over a long period of time, the bearing assembly includes a self-lubricating graphite copper sleeve and a dustproof seal ring.

[0015] Furthermore, to facilitate pulling the first screen plate, the handle is equipped with a self-locking mechanism. The self-locking mechanism includes a push button located at the top of the handle, a locking pin coaxially connected to the button, a compression spring surrounding the locking pin, and a limiting bead located at the end of the locking pin. When the button is pressed, the locking pin overcomes the spring force and exits the positioning hole, at which point the handle can move freely. After the button is released, the spring pushes the locking pin to automatically engage with the adjacent positioning hole.

[0016] Furthermore, in order to reduce the friction between the sieve plate and the inner wall of the dust removal chamber, the front and rear ends of the first and second sieve plates are provided with guide arc surfaces.

[0017] Furthermore, in order to discharge the micro powder from the dust collection chamber, the negative pressure dust collection unit includes a centrifugal fan, a cyclone separator, and a bag filter. The air inlet of the centrifugal fan is connected to the bottom of the dust collection chamber through a corrugated pipe.

[0018] Furthermore, to ensure the dust removal effect, the sealed space formed by the dust removal chamber is equipped with an air inlet and an air outlet.

[0019] The beneficial effects of this application are as follows:

[0020] 1. The dust removal device for the crusher used in activated carbon production of this application forms a closed space with alternating opening and closing by setting two screen plates that can be moved in a staggered manner, and is equipped with a negative pressure dust collection unit to remove dust from the excessively crushed fine powder. This solves the problem in the prior art that when using a jaw crusher to crush the raw materials for the preparation of activated carbon, fine powder is generated, which not only obstructs the material transmission of the jaw crusher, but also causes the energy consumption of the screw conveyor to rise abnormally.

[0021] 2. This application is equipped with a servo motor, which can cause the fine powder that fails to pass through the screen at the top of the second sieve plate to fall directly into the dust collection chamber, thereby improving the dust collection rate.

[0022] 3. This application is equipped with a switching device and a handle. The switching device reduces the friction between the screen plates, and the handle allows the operator to apply force more effectively, thereby improving the convenience of switching the first screen plate and the second screen plate. At the same time, the self-locking mechanism enables the quick installation and removal of the handle, improving the efficiency of disassembly after the screen plate is switched, and facilitating the servo motor to quickly drive the screen plate to rotate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a dust removal device for a crusher used in activated carbon production, as described in an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the dust removal chamber in an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the first sieve plate and the second sieve plate in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the handle and self-locking mechanism in the embodiments of this application;

[0028] Figure 5 This is a schematic diagram of the structure of the first sieve plate in an embodiment of this application;

[0029] Figure 6 for Figure 5 Enlarged view of point a in the middle;

[0030] Figure 7 This is a schematic diagram of the structure of the second sieve plate in an embodiment of this application;

[0031] Figure 8for Figure 7 Enlarged view at point b;

[0032] Figure 9 In order to be in Figure 8 A schematic diagram of the bearing assembly after the dustproof seal ring has been removed;

[0033] Figure 10 This is a cross-sectional view of a dust removal device for a crusher used in activated carbon production, as described in an embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Crusher;

[0036] 2. Screw conveyor;

[0037] 3. Dust collection chamber; 31. Air inlet; 32. Air outlet;

[0038] 4. First sieve plate; 41. Handle; 411. Self-locking mechanism; 4111. Button; 4112. Locking pin; 4113. Compression spring; 4114. Limiting bead;

[0039] 5. Second sieve plate; 51. Fixed column; 52. Servo motor; 53. Guide arc surface;

[0040] 6. Repositioning device; 61. T-shaped slide rail; 611. PTFE wear-resistant layer; 62. Bearing assembly; 621. Self-lubricating graphite copper sleeve; 622. Dustproof sealing ring; 63. T-shaped slider;

[0041] 7. Negative pressure dust collection unit; 71. Centrifugal fan; 72. Corrugated pipe. Detailed Implementation

[0042] The following will be combined with the appendix Figures 1-10 The embodiments of the technical solutions of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0043] Example 1:

[0044] Please refer to Figures 1-3 as well as Figure 10 , Figure 1 The diagram illustrates the overall structure of the dust removal device for a crusher used in activated carbon production according to this application, including: a crusher 1, a screw conveyor 2 disposed at the bottom of the crusher 1, and a dust collection chamber 3 connected to the bottom of the screw conveyor 2. Figure 2It can be observed that, in order to effectively discharge the fine powder retained in the pipe groove of the screw conveyor 2, filter holes are provided at the bottom of the pipe groove of the screw conveyor 2. When the raw material for producing activated carbon is crushed by the crusher 1 and falls into the screw conveyor 2, the fine powder formed by excessive crushing will fall from the filter holes provided at the bottom of the pipe groove of the screw conveyor 2 into the dust collection bin 3. After further processing in the dust collection bin 3, it will finally be discharged from the crusher 1.

[0045] The dust collection bin 3 further processes the fine powder by using two staggered sieve plates to create an alternately opening and closing sealed space, and is equipped with a negative pressure dust collection unit to remove dust from the over-crushed fine powder. Specifically, the dust collection bin 3 is connected to the discharge port of the crusher 1 to receive the crushed raw materials.

[0046] Please refer to Figure 3 , Figure 4 as well as Figure 10 The first sieve plate 4 and the second sieve plate 5 are respectively installed inside the dust collection chamber 3. Figure 3 In the middle, the screen holes of the first screen plate 4 and the second screen plate 5 are aligned, and the dust collection chamber 3 is in the open state. Figure 4 The diagram illustrates a switching device 6 installed between the first screen plate 4 and the second screen plate 5. The switching device 6 allows the first screen plate 4 to move horizontally relative to the second screen plate 5, and the front end of the first screen plate 4 is equipped with a handle 41 for easy operation. The second screen plate 5 is pivotally mounted inside the dust collection chamber 3 via a fixed column 51. The screen holes of the two screen plates are equidistantly arranged in the front-to-back direction. When the two screen plates move in a staggered manner, their staggered travel is equal to the distance between adjacent screen holes, thus forming an alternately opening and closing sealed space.

[0047] For details, please refer to Figures 4-9 First, pull handle 41 to move the T-shaped slider 63 in the switching device 6 from one end of the T-shaped groove 61 to the other. At this time, the screen holes on the two screen plates are misaligned, forming a closed space in the dust collection chamber 3. Simultaneously, the negative pressure dust collection unit 7 below starts working, using negative pressure suction to draw the micro-powder into the bottom of the dust collection chamber 3, thus removing dust from the over-crushed micro-powder. This design solves the problem that when using a jaw crusher to crush raw materials for activated carbon preparation, the micro-powder produced not only obstructs material transmission but also causes an abnormal increase in the energy consumption of the screw conveyor.

[0048] To improve the dust removal efficiency of the micro powder, this application includes a servo motor 52 on the fixing column 51 of the second sieve plate 5. The servo motor 52 can drive the second sieve plate 5 to rotate 180°. In this way, micro powder that fails to pass through the sieve at the top of the second sieve plate 5 will fall directly into the dust collection chamber 3 during the rotation process, where it will be further processed by the negative pressure dust collection unit 7, thereby improving the dust removal rate. This design ensures thorough dust removal, prevents the accumulation of micro powder on the sieve plate, and guarantees the dust removal effect.

[0049] To reduce friction between the first screen plate 4 and the second screen plate 5 and improve the ease of repositioning, this application provides a repositioning device 6. The repositioning device 6 includes T-shaped grooves 61 on both sides of the first screen plate 4, a bearing assembly 62 connecting the bottom of the second screen plate 5, and a T-shaped slider 63 that engages with the slide rail. The cooperation between the T-shaped grooves 61 and the T-shaped slider 63 allows the second screen plate 5 to move smoothly on the first screen plate 4, reducing frictional resistance. The length of the T-shaped groove 61 is equal to half the distance between two adjacent screen holes on the screen plate. Since the length of the T-shaped groove 61 restricts the relative position that the two screen plates can move, when the handle 41 is pulled until it cannot be pulled any further, the screen holes automatically misalign, creating a closed space in the dust collection chamber.

[0050] In addition, the handle 41 is equipped with a self-locking mechanism 411, including a press button 4111, a locking pin 4112, a compression spring 4113, and a limit bead 4114. When the button is pressed, the locking pin disengages from the positioning hole, allowing the handle to move freely. At this time, the handle 41 does not interfere with the inner wall of the dust collection chamber 3, enabling the screen plate to rotate 180 degrees. After releasing the button, the spring pushes the locking pin to automatically engage with the adjacent positioning hole, realizing the quick installation and removal of the handle. The quick removal of the handle 41 reduces the preparation time for the servo motor to drive the screen plate to flip after misalignment, facilitating the servo motor to quickly drive the screen plate to flip. This design not only improves the convenience of screen plate repositioning but also ensures the stability of the screen plate after repositioning.

[0051] As a preferred solution, to improve the stability of the screen plate during long-term operation, the bearing assembly 62 is equipped with a self-lubricating graphite copper sleeve 621 and a dustproof sealing ring 622, ensuring the long-term stable operation of the bearing. Simultaneously, to enhance the wear resistance of the T-shaped slide 61, this application provides a polytetrafluoroethylene (PTFE) wear-resistant layer 611 on the inner wall of the T-shaped slide 61. PTFE has excellent wear resistance and self-lubricating properties, which can significantly reduce the coefficient of friction between the slide and the slider, extending the service life of the slide. Furthermore, to reduce the friction between the screen plate and the inner wall of the dust collection chamber, the front and rear ends of the first screen plate 4 and the second screen plate 5 are provided with guide arc surfaces 53. By reducing the contact area between the screen plate and the inner wall of the dust collection chamber 3, the friction between them is reduced, making the screen plate rotate more smoothly.

[0052] The negative pressure dust collection unit 7 of this application includes a centrifugal fan 71 and a corrugated pipe 72, with the corrugated pipe 72 connected to the bottom of the dust collection chamber 3. When the negative pressure dust collection unit 7 is working, the centrifugal fan 71 generates negative pressure suction, drawing the fine powder from the dust collection chamber 3 through the corrugated pipe 72. The powder then proceeds to subsequent processing steps. As a preferred embodiment, the fine powder can first enter a cyclone separator for preliminary separation, then pass through a bag filter for fine filtration, and finally, clean air is discharged. This design ensures high efficiency and stability in dust collection.

[0053] To ensure effective dust removal, the dust collection chamber 3 of this application is equipped with an air inlet 81 and an air outlet 82 within its enclosed space. As a preferred embodiment, both the air inlet 81 and the air outlet 82 are equipped with adjustable dampers. The damper opening is connected to a control unit via a servo motor, and the control unit is equipped with a differential pressure sensor. By monitoring changes in the differential pressure within the dust collection chamber, the control unit can automatically adjust the damper opening to maintain a stable negative pressure state within the chamber, thereby ensuring optimal dust removal performance.

[0054] In the description of the embodiments of this application, the technical terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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 the embodiments of this application.

[0055] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set," "equipped with," "connected," and "installed" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crusher dust removal device for activated carbon production, which is provided between a crusher (1) and a screw conveyor (2), characterized in that, The dust removal device includes: A dust removal chamber (3) connected to the discharge port of the crusher (1); A first sieve plate (4) is horizontally movable and embedded in the dust removal chamber (3), with the front end of the first sieve plate (4) extending to form a handle (41); a second sieve plate (5) is pivotally installed in the dust removal chamber (3) via a fixed column (51); the sieve holes of the first sieve plate (4) and the second sieve plate (5) are equidistantly arranged in the front-back direction, and the offset movement of the two sieve plates is equal to the distance between adjacent sieve holes, forming an alternately opening and closing sealed space; And a negative pressure dust collection unit (7) located at the bottom of the dust collection chamber.

2. The dust extraction device of claim 1, wherein: The fixed column (51) is equipped with a servo motor (52) that drives the screen plate to rotate 180°.

3. The dust extraction device of claim 1, wherein: A shifting device (6) is provided between the first sieve plate (4) and the second sieve plate (5) to enable the two sieve plates to move together; the shifting device (6) includes: a T-shaped slide groove (61) provided on both sides of the first sieve plate, a bearing assembly (62) connected to the bottom of the second sieve plate, and a T-shaped slider (63) that fits into the slide rail.

4. The dust extraction device of claim 3, wherein: The inner wall of the T-shaped groove (61) is provided with a polytetrafluoroethylene wear-resistant layer (611).

5. The dust extraction device of claim 3, wherein: The bearing assembly (62) includes a self-lubricating graphite copper sleeve (621) and a dustproof seal (622).

6. The dust extraction device of claim 1, wherein: The handle (41) is provided with a self-locking mechanism (411), which includes a push button (4111) located at the top of the handle (41), a locking pin (4112) coaxially connected to the button, a compression spring (4113) wrapping the locking pin, and a limiting bead (4114) located at the end of the locking pin (4112).

7. The dust extraction device of claim 1, wherein: The first sieve plate (4) and the second sieve plate (5) are provided with flow guiding arc surfaces (53) at their front and rear ends.

8. The dust removal device according to claim 1, characterized in that: The negative pressure dust collection unit (7) includes a centrifugal fan (71) and a corrugated pipe (72). The air inlet of the centrifugal fan is connected to the bottom of the dust collection chamber (3) through the corrugated pipe (72).

9. The dust removal device according to claim 1, characterized in that: The dust removal chamber (3) has an air inlet (81) and an air outlet (82) in the enclosed space.

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