A forced equivalent hypergravity dust removal device

Abstract

The present invention discloses a forced equivalent supergravity dust removal device, belonging to the technical field of dust removal devices. It includes a bottom plate, a hard pipe fixing frame and a column plate fixedly installed on the bottom plate, a channel hard pipe fixedly installed on the hard pipe fixing frame, a negative pressure fan, a dust removal box slidably installed on the column plate in the vertical direction, a sliding filter screen and a fixed filter screen installed inside the dust removal box, a channel hose, a push-pull rod, rollers, a moving cam that slides without rotating, a lead screw, a motor A for driving the rotation of the lead screw, a sprocket shaft, a motor B, a filter screen lifting transmission assembly and a dust cleaning assembly installed inside the supergravity chamber. The present invention is a dust removal device with a reasonable structure, which realizes the rapid settlement of dust particles through the supergravity effect and the mesh holes of the filter screen will not be blocked.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of dust removal equipment, and particularly refers to a forced equivalent supergravity dust removal equipment. Background Art

[0002] During the production process, pollutants such as dust and metal chips are usually generated. Such pollutants enter the air to form harmful waste gas, so it is necessary to perform dust removal treatment on the waste gas. In the prior art, the dust removal treatment methods include gravity separation method and inertial separation method. Among them, the gravity separation method is applicable to the waste gas with larger dust particle diameter and larger mass, and the inertial separation method is applicable to the waste gas with smaller dust particle diameter. That is, there is no good dust removal equipment in the prior art that can simultaneously remove dust particles with different particle sizes and different masses in the waste gas. In addition, during the gravity dust removal process in the prior art, the upward flow of the waste gas is also likely to cause the dust particles to block the filter screen, thereby affecting the dust removal efficiency. Therefore, there is an urgent need to design an efficient dust removal equipment that is universal for waste gas containing dust with different particle sizes and different masses. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a dust removal equipment with reasonable structure, which can realize the rapid sedimentation of dust particles through the supergravity effect and the mesh holes of the filter screen will not be blocked.

[0004] To solve the above problems, the solution proposed by the present invention is: a forced equivalent supergravity dust removal device, including a bottom plate, a hard pipe fixing frame and a column plate fixedly installed on the bottom plate, and further including: a channel hard pipe fixedly installed on the hard pipe fixing frame, a negative pressure fan connected to one end of the channel hard pipe, a dust removal box slidably installed on the column plate in the vertical direction, a sliding filter screen and a fixed filter screen installed inside the dust removal box and sequentially separating the internal space of the dust removal box into a clean air chamber, a supergravity chamber, and a dust settling chamber from top to bottom, a channel hose with one end communicating with the other end of the channel hard pipe and the other end communicating with the dust settling chamber, a push rod fixedly connected to the outer bottom of the dust removal box at the upper end, a roller rotatably installed at the lower end of the push rod, a guide rail fixedly installed on the bottom plate, a moving cam slidably but not rotatably installed on the guide rail and movably connected to the roller, a lead screw parallel to the guide rail and in screw drive connection with the moving cam, a motor A for driving the lead screw to rotate, a sprocket shaft rotatably installed at both ends on the front side plate and the rear side plate of the dust removal box and located inside the supergravity chamber, a motor B installed outside the dust removal box for driving the sprocket shaft to rotate, a filter screen lifting transmission assembly installed inside the supergravity chamber for transmitting the rotational torque of the sprocket shaft to make the sliding filter screen move up and down, and a dust cleaning assembly installed inside the supergravity chamber for sweeping the dust settled on the upper surface of the fixed filter screen into the dust settling chamber;

[0005] When the lead screw rotates forward at a constant speed, the moving cam pushes the dust removal box to move upward with acceleration; when the lead screw rotates backward at a constant speed, the moving cam pulls the dust removal box to move downward with deceleration.

[0006] Furthermore, the present invention further includes a bearing frame and a motor frame fixedly installed on the bottom plate; one end of the lead screw is rotatably installed on the bearing frame, and the other end rotatably passes through the column plate and is coaxially and fixedly connected to the output shaft of the motor A installed on the motor frame.

[0007] Furthermore, the filter screen lifting transmission assembly includes: a return spring installed inside the clean air chamber and connected to the dust removal box and the sliding filter screen at both ends, a winding wheel fixedly installed on the sprocket shaft, and a traction rope with one end connected to the sliding filter screen and the other end wound around the winding wheel.

[0008] Furthermore, the dust cleaning assembly includes: a guide rod installed inside the supergravity chamber, a brush slidably installed on the guide rod, a power sprocket fixedly installed on the sprocket shaft, a plurality of guide sprockets rotatably installed on the left and right side plates of the dust removal box, and an open chain in transmission connection with the power sprocket; the open chain bypasses the guide sprockets and is connected to the left and right sides of the brush at both ends.

[0009] Furthermore, the contact line between the movable cam and the roller includes a linear buffer section A, a curved speed change section and a linear buffer section B which are connected in sequence.

[0010] Furthermore, a clean air outlet is provided on the top of the dust removal box.

[0011] Furthermore, the aperture of the sliding filter is smaller than the aperture of the fixed filter.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects: a forced equivalent supergravity dust removal device of the present invention is provided with a moving cam that drives the variable speed lifting and lowering movement of the dust collector. When the moving cam moves to the right at a constant speed, it can push the dust collector to accelerate upward, and when the moving cam moves to the left at a constant speed, it can pull the dust collector to decelerate downward, so that the dust collector has an upward acceleration during the lifting and lowering movement, so the dust particles inside the dust collector are quickly affected by "supergravity"; the dust collector is provided with a fixed filter and a sliding filter with different apertures. When the sliding filter moves downward relative to the dust collector, the part of the dust particles that is in direct contact with the sliding filter will quickly settle; a brush that moves back and forth is also provided in the supergravity chamber, which can sweep the dust particles settled on the surface of the fixed filter into the dust settling chamber, effectively preventing the mesh of the fixed filter from being blocked and improving the effect of the upward flow of gas in the dust collector. It can be seen from this that the present invention is a dust removal device with a reasonable structure, which realizes rapid sedimentation of dust particles through the supergravity effect and prevents the mesh of the filter from being clogged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structural principle of a forced equivalent supergravity dust removal device of the present invention.

[0014] Figure 2 It is a top view of the relative positions of the sprocket shaft and the dust removal box in the present invention.

[0015] Figure 3 It is a structural schematic diagram of the movable cam in the present invention.

[0016] Figure 4 It is a schematic diagram of the relative positions of the fixed filter and the sliding filter in the dust removal box of the present invention.

[0017] 11 - Bottom plate; 12 - Hard pipe fixing bracket; 13 - Column plate; 14 - Dust removal box; 141 - Dust settling chamber; 142 - High gravity chamber; 143 - Clean air chamber; 15 - Negative pressure fan; 16 - Channel hard pipe; 17 - Channel flexible pipe; 18 - Clean air outlet; 20 - Guide rail; 21 - Bearing bracket; 22 - Motor bracket; 23 - Lead screw; 24 - Moving cam; 241 - Linear buffer section A; 242 - Curve variable speed section; 243 - Linear buffer section B; 25 - Motor A; 26 - Roller; 27 - Push-pull rod; 31 - Fixed filter screen; 32 - Sliding filter screen; 41 - Brush; 42 - Guide rod; 43 - Driving sprocket; 44 - Open chain; 51 - Return spring; 52 - Traction rope; 53 - Wire winding wheel; 60 - Motor B; 61 - Sprocket shaft. Detailed implementation mode

[0018] For the convenience of description, hereinafter, impurities such as dust and metal chips generated during the production process are uniformly recorded as dust particles, the gas containing the above dust particles is recorded as waste gas, and the waste gas after dust removal is recorded as clean air. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] See Figure 1 、 Figure 2 and Figure 4, a forced equivalent supergravity dust removal device of the present invention, which includes a bottom plate 11, a hard pipe fixing frame 12 and a column plate 13 fixedly installed on the bottom plate 11, a channel hard pipe 16 fixedly installed on the hard pipe fixing frame 12, a negative pressure fan 15 connected to one end of the channel hard pipe 16, a dust removal box 14 slidably installed on the column plate 13 in the vertical direction, a sliding filter screen 32 and a fixed filter screen 31 installed inside the dust removal box 14 and sequentially dividing the internal space of the dust removal box 14 into a clean air chamber 143, a supergravity chamber 142, and a dust settling chamber 141 from top to bottom, a channel hose 17 with one end connected to the other end of the channel hard pipe 16 and the other end connected to the dust settling chamber 141, a push-pull rod 27 fixedly connected to the outer bottom of the dust removal box 14 at the upper end, a roller 26 rotatably installed at the lower end of the push-pull rod 27, a guide rail 20 fixedly installed on the bottom plate 11, a moving cam 24 slidably but not rotatably installed on the guide rail 20 and movably connected to the roller 26, a lead screw 23 parallel to the guide rail 20 and in screw drive connection with the moving cam 24, a motor A25 for driving the lead screw 23 to rotate, a sprocket shaft 61 rotatably installed at both ends on the front side plate and the rear side plate of the dust removal box 14 and located inside the supergravity chamber 142, a motor B60 installed outside the dust removal box 14 for driving the sprocket shaft 61 to rotate, a filter screen lifting transmission assembly installed inside the supergravity chamber 142 for transmitting the rotational torque of the sprocket shaft 61 to make the sliding filter screen 32 move up and down, and a dust cleaning assembly installed inside the supergravity chamber 142 for sweeping the dust settled on the upper surface of the fixed filter screen 31 into the dust settling chamber 141. Specifically, during implementation, the dust removal box 14 has a rectangular parallelepiped shape and is hollow inside, and an air outlet is opened at the top of the dust removal box 14; a switch door for taking out the settled dust in the dust settling chamber 141 is provided at the bottom of the dust removal box 14; during operation, the suction port of the negative pressure fan 15 is extended into the space containing dust, so that the dust-containing air flows into the dust settling chamber 141 of the dust removal box 14 through the channel hard pipe 16 and the channel hose 17. Larger mass dust particles first settle in the dust settling chamber 141, and smaller mass dust particles enter the supergravity chamber 142 together with the air flow through the fixed filter screen 31.

[0020] When the lead screw 23 rotates forward at a constant speed, the moving cam 24 pushes the dust removal box 14 to move upward with an acceleration; when the lead screw 23 rotates reversely at a constant speed, the moving cam 24 pulls the dust removal box 14 to move downward with a deceleration. Specifically, during use, the motor A25 drives the lead screw 23 to rotate forward and backward, so that the dust removal box 14 moves up and down in a reciprocating manner, and there is always an upward acceleration in the vertical direction during the lifting process, so that the dust inside the dust removal box 14 exhibits a supergravity effect, thereby achieving the technical effect of accelerating dust settlement.

[0021] Furthermore, the present invention also includes a bearing frame 21 and a motor frame 22 fixedly mounted on the base plate 11; one end of the screw 23 is rotatably mounted on the bearing frame 21, and the other end rotates through the column plate 13 and is coaxially fixedly connected to the output shaft of the motor A25 mounted on the motor frame 22.

[0022] Furthermore, the filter lifting and lowering transmission assembly includes: a return spring 51 installed within the clean air chamber 143 and connected at both ends to the dust removal box 14 and the sliding filter 32, respectively; a winding wheel 53 fixedly mounted on the sprocket shaft 61; and a traction rope 52 having one end connected to the sliding filter 32 and the other end wound around the winding wheel 53. When the motor B60 drives the sprocket shaft 61 counterclockwise, the winding wheel 53 winds the traction rope 52, causing the sliding filter 32 to slide downward relative to the dust removal box 14, and the length of the return spring 51 increases. The sliding filter 32 sliding downward relative to the dust removal box 14 exerts a downward force on the dust particles in the supergravity chamber 142 that have not yet settled, accelerating dust settling. When the motor B60 drives the sprocket shaft 61 clockwise, the winding wheel 53 releases the traction rope 52, and the sliding filter 32 slides upward and resets under the action of the return spring 51. Since the dust box 14 always has an upward acceleration during the lifting process, at the moment when the relative movement speed of the sliding filter 32 is reversed, the return spring 51 can cause the sliding filter 32 to shake briefly, thereby shaking off the dust particles accumulated on the lower surface of the sliding filter 32 and avoiding clogging of the mesh of the sliding filter 32.

[0023] Furthermore, the dust cleaning assembly includes: a guide rod 42 installed inside the supergravity chamber 142, a brush 41 slidably installed on the guide rod 42, a driving sprocket 43 fixedly installed on the sprocket shaft 61, a plurality of guide sprockets rotatably installed on the left and right side plates of the dust removal box 14, and an open chain 44 drivingly connected to the driving sprocket 43; the open chain 44 bypasses the guide sprockets and is respectively connected to the left and right sides of the brush 41. During the process of the dust removal box 14 accelerating upward or decelerating downward, the dust particles in the supergravity chamber 142 will settle downward under the action of supergravity. Under the combined action of the supergravity and the sliding filter screen 32 in the supergravity chamber 142, some dust particles pass through the mesh holes of the fixed filter screen 31 and directly settle to the bottom of the dust settling chamber 141, and the other part settles on the upper surface of the fixed filter screen 31. The motor B60 drives the sprocket shaft 61 to rotate counterclockwise, and the driving sprocket 43 drives the open chain 44 to rotate counterclockwise, thereby pulling the brush 41 to slide rightward along the guide rod 42; the motor B60 drives the sprocket shaft 61 to rotate clockwise, and the driving sprocket 43 drives the open chain 44 to rotate clockwise, thereby pulling the brush 41 to slide leftward along the guide rod 42. When the brush 41 moves rightward, it can sweep the dust particles settled on the upper surface of the fixed filter screen 31 from left to right into the mesh holes of the fixed filter screen 31, and when the brush 41 moves leftward, it can sweep the dust particles settled on the upper surface of the fixed filter screen 31 from right to left into the mesh holes of the fixed filter screen 31. Therefore, the left and right reciprocating movement of the brush 41 can sweep the dust particles originally settled on the upper surface of the fixed filter screen 31 into the dust settling chamber 141, effectively preventing the mesh holes of the fixed filter screen 31 from being blocked.

[0024] See Figure 1 and Figure 3 , furthermore, the contact line between the moving cam 24 and the roller 26 includes a linearly buffered section A241, a curvilinearly variable-speed section 242, and a linearly buffered section B243 connected in sequence. During specific implementation, to reduce the movement resistance, a rolling screw is selected for the lead screw 23, and a rolling nut cooperating with the ball screw is sleeved at the center of the moving cam 24; the moving cam 24 is axially composed of three parts: a small-diameter cylinder, a frustum of a cone with a curved generatrix, and a large-diameter cylinder; an equally deep rolling groove is axially formed on the side surface of the moving cam 24, and the equally deep rolling groove is connected to the roller 26 in a geometric locking manner, so that the roller 26 will not be separated from the moving cam 24; the bottom curve of the equally deep rolling groove is the contact line between the moving cam 24 and the roller 26. The roller 26 realizes the commutation of the movement speed on the linearly buffered section A241 and the linearly buffered section B243, and the roller 26 provides a supergravity effect for the dust particles through variable-speed movement on the curvilinearly variable-speed section 242. To ensure that the dust removal box 14 has an upward acceleration during the lifting movement process, the absolute value of the tangent slope of the curvilinearly variable-speed section 242 increases unidirectionally from right to left.

[0025] Further, a clean air outlet 18 is provided at the top of the dust removal box 14.

[0026] Further, the aperture of the sliding filter screen 32 is smaller than that of the fixed filter screen 31. And the inner diameter of the mesh holes of the sliding filter screen 32 is smaller than the diameter of the dust particles stipulated by environmental protection regulations, so that the clean air discharged from the clean air outlet 18 meets the environmental protection requirements; to accelerate the secondary sedimentation of the dust particles in the supergravity chamber 142 to the bottom of the dust sedimentation chamber 141, and at the same time increase the upward flow velocity of the waste gas in the dust sedimentation chamber 142, it is optimal that the aperture of the fixed filter screen 31 is equal to twice the aperture of the sliding filter screen 32.

[0027] The working process and working principle of the present invention are as follows: First, connect the suction port of the negative pressure fan 15 to the space containing waste gas; then, start the negative pressure fan 15, the motor A 25 and the motor B 60; the negative pressure fan 15 sucks the air containing dust and transports it to the dust sedimentation chamber 141 of the dust removal box 14 through the channel hard pipe 16 and the channel hose 17. The dust particles with larger particle sizes are intercepted by the fixed filter screen 31, and the dust particles with larger masses directly settle in the dust sedimentation chamber 141. The dust particles with smaller particle sizes and smaller masses move upward under the action of the air flow and pass through the fixed filter screen 31 to enter the supergravity chamber 142. The motor A 25 drives the lead screw 23 to rotate forward and backward, thereby causing the dust removal box 14 to reciprocate up and down, and the acceleration is always upward. The dust particles are subjected to the "supergravity" effect in the supergravity chamber 142, and the dust particles with smaller masses and smaller particle sizes settle quickly. The motor B 60 drives the sprocket shaft 61 to rotate forward and backward, and the sliding filter screen 32 moves up and down relative to the dust removal box 14. During the process of the sliding filter screen 32 moving downward relative to it, a downward acting force is applied to the dust particles in direct contact with it, so that these dust particles settle quickly. The brush 41 moves back and forth left and right, sweeping the dust particles settled on the upper surface of the fixed filter screen 31 and the dust particles attached to the lower surface of the fixed filter screen 31, so that they finally settle at the bottom of the dust sedimentation chamber 141. Finally, after dust removal for a period of time, turn off the motor A 25, the motor B 60 and the negative pressure fan, open the switch door provided at the bottom of the dust sedimentation chamber 141, and remove the settled dust particles.

[0028] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative labor should fall within the protection scope of the present invention.

Claims

1. A forced equivalent hypergravity dust removal device, comprising a bottom plate (11), and a hard pipe fixing frame (12) and a column plate (13) fixedly installed on the bottom plate (11), characterized in that, Also includes: A channel hard tube (16) fixedly mounted on the hard tube fixing frame (12), a negative pressure fan (15) connected to one end of the channel hard tube (16), a dust removal box (14) slidably mounted on the column plate (13) in the vertical direction, a sliding process installed inside the dust removal box (14) and dividing the internal space of the dust removal box (14) from top to bottom into a clean air chamber (143), a supergravity chamber (142), and a dust settling chamber (141). The filter screen (32) and the fixed filter screen (31), a channel hose (17) whose one end is connected to the other end of the channel hard tube (16) and the other end is connected to the dust settling chamber (141), a push-pull rod (27) whose upper end is fixedly connected to the outer bottom of the dust removal box (14), a roller (26) rotatably mounted on the lower end of the push-pull rod (27), a guide rail (20) fixedly mounted on the bottom plate (11), a sliding but non-rotating guide rail (20) mounted on the bottom plate (11), and a guide rail (20) fixedly mounted on the bottom plate (11) are provided. a movable cam (24) on the guide rail (20) and movably connected to the roller (26); a lead screw (23) parallel to the guide rail (20) and spirally connected to the movable cam (24); a motor A (25) for driving the lead screw (23) to rotate; a sprocket shaft (61) mounted on the front and rear side plates of the dust removal box (14) and located inside the supergravity chamber (142) for rotating at both ends; a motor B (60) mounted outside the dust removal box (14) for driving the sprocket shaft (61) to rotate; a filter lifting transmission assembly mounted inside the supergravity chamber (142) for transmitting the rotational torque of the sprocket shaft (61) to lift and lower the sliding filter (32); and a dust cleaning assembly mounted inside the supergravity chamber (142) for sweeping dust settled on the upper surface of the fixed filter (31) to the inside of the dust settling chamber (141); When the lead screw (23) rotates at a constant speed in the forward direction, the movable cam (24) pushes the dust removal box (14) to move upward at an accelerated speed; when the lead screw (23) rotates at a constant speed in the reverse direction, the movable cam (24) pulls the dust removal box (14) to move downward at a decelerated speed.

2. The forced equivalent supergravity dust removal device according to claim 1, wherein The invention also includes a bearing frame (21) and a motor frame (22) fixedly mounted on the base plate (11); one end of the lead screw (23) is rotatably mounted on the bearing frame (21), and the other end rotates through the column plate (13) and is coaxially fixedly connected to the output shaft of the motor A (25) mounted on the motor frame (22).

3. The forced equivalent supergravity dust removal device according to claim 1, characterized in that, The filter screen lifting transmission assembly comprises: a return spring (51) installed inside the clean air chamber (143) and connected at both ends to the dust removal box (14) and the sliding filter screen (32), a winding wheel (53) fixedly mounted on the sprocket shaft (61), and a traction rope (52) with one end connected to the sliding filter screen (32) and the other end wound around the winding wheel (53).

4. The forced equivalent supergravity dust removal device according to claim 1, characterized in that, The dust cleaning assembly includes: a guide rod (42) installed inside the supergravity chamber (142), a brush (41) slidably installed on the guide rod (42), a driving sprocket (43) fixedly installed on the sprocket shaft (61), a plurality of guide sprockets rotatably installed on the left and right side plates of the dust removal box (14), and an open chain (44) drivingly connected to the driving sprocket (43); the open chain (44) bypasses the guide sprockets and is respectively connected to the left and right sides of the brush (41).

5. The forced equivalent supergravity dust removal device according to claim 1, characterized in that The contact line between the moving cam (24) and the roller (26) includes a linear buffer section A (241), a curved variable-speed section (242), and a linear buffer section B (243) connected in sequence.

6. The forced equivalent supergravity dust removal device according to claim 1, characterized in that, A clean air outlet (18) is provided at the top of the dust removal box (14).

7. The forced equivalent hypergravity dust removal device according to claim 1, characterized in that The aperture of the sliding filter screen (32) is smaller than the aperture of the fixed filter screen (31).

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