Cement dust collecting device

Abstract

The invention provides a cement dust collecting device, which belongs to the technical field of cement production and comprises a cyclone dust collector, a filtering mechanism, a cleaning mechanism, an adjusting mechanism, a control mechanism and a driving mechanism. Wherein the cyclone dust collector comprises an air inlet and an air outlet; the filtering mechanism is assembled on the cyclone dust collector and comprises a filtering bag, and the filtering bag is arranged in the cyclone dust collector by adopting a rotatable unfolding structure and is used for separating large-particle-size particles in the cement dust; the cleaning mechanism is fixedly arranged on one side of the inner wall of the cyclone dust collector, and the cleaning end of the cleaning mechanism is attached to the outer side of the cloth bag and is matched with the rotation of the filter bag to realize all-directional dead-corner-free suction; the two adjusting mechanisms are symmetrically arranged on the two sides of the suction opening of the cleaning mechanism and used for adjusting the opening and closing degree of the suction opening. The device adopts the grading design of cyclone centrifugal coarse separation and filter bag fine filtration, and dust is continuously and dynamically removed from the filter bag, so that the dust recovery efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cement production, in particular to a cement dust collecting device. BACKGROUND

[0002] In the cement production process, a large amount of dust will be generated in each link from raw material crushing, grinding, calcination to finished product packaging. The cement dust is rich in harmful substances such as free silicon dioxide, and has a fine particle size and is easy to suspend in the workshop air. After long-term inhalation by the operator, the harmful substances will deposit in the lungs, which is easy to cause irreversible occupational diseases such as pneumoconiosis, and seriously damages the health. Direct emission will also cause air pollution, aggravate regional air pollution, and at the same time, the main components of cement dust are effective production raw materials such as cement clinker, gypsum and mixed materials, and a large amount of dust is scattered and not recycled, which directly causes raw material waste. At present, the most widely used dust collecting system in the cement production line is the combined process mode of "pre-treatment of cyclone dust collector + post-treatment of filter bag dust collector". However, the cement dust itself has strong viscosity, and is easy to absorb moisture in the air to cause hydration reaction and form clumps. Fine particle dust will be tightly adsorbed in the filter bag fiber pores, and gradually form a dense dust layer. Even after the pre-treatment of the cyclone dust collector, the fine particles entering the filter bag will still block the filter bag pores, causing the system ventilation resistance to rise and the dust removal efficiency to be greatly attenuated. At present, the industry generally adopts two self-cleaning methods of pulse blowing and mechanical vibration to alleviate the problem of filter bag blockage. However, the impact force of high-pressure airflow of pulse blowing technology is concentrated in the local filter bag, and the penetration force is insufficient for the dense layered clumps that have been hydrated and clumped. A small amount of loose dust is cleared from the surface, and cannot penetrate the deep clumps. And the mechanical vibration technology produces vibration by knocking the filter bag frame to achieve dust falling, but the vibration intensity is difficult to accurately control. If the intensity is too large, it is easy to cause damage to the filter bag. If the intensity is insufficient, it is difficult to break the adsorption force between the dust and the filter bag fibers, and secondary dust raising is easy to occur during the vibration process, which further aggravates the filter bag blockage. Therefore, there is an urgent need for a cement dust collecting device. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art or related art.

[0004] To this end, the present application provides a cement dust collecting device, which adopts a hierarchical design of cyclone centrifugal coarse separation and filter bag fine filtration, and continuously dynamically cleans the filter bag to improve the recovery and collection efficiency.

[0005] The application provides a cement dust collecting device, which comprises a cyclone dust collector, a filtering mechanism, a cleaning mechanism, an adjusting mechanism, a control mechanism and a driving mechanism. The cyclone dust collector comprises an air inlet and an air outlet. The filtering mechanism is assembled on the cyclone dust collector and comprises a filter bag which is arranged in the cyclone dust collector in a rotatable unfolding structure and used for separating large-diameter particles in the cement dust. The cleaning mechanism is fixed to one side of the inner wall of the cyclone dust collector and is attached to the outer side of the filter bag at the cleaning end, so that the rotating filter bag can realize omnidirectional and dead angle-free suction. The two adjusting mechanisms are symmetrically arranged on both sides of the suction port of the cleaning mechanism and used for adjusting the opening and closing size of the suction port. The control mechanism is arranged on the cyclone dust collector and is in transmission connection with the two adjusting mechanisms. The control mechanism is used for adjusting the cooperative action of the two adjusting mechanisms. The driving mechanism is arranged at the air inlet of the cyclone dust collector and is in transmission connection with the control mechanism. The driving mechanism can collect the airflow power of the air inlet and convert it into the driving source of the control mechanism.

[0006] In some embodiments, the cyclone dust collector comprises a support frame, a dust removal cylinder arranged on the support frame, an air inlet formed on one side of the outer part of the dust removal cylinder, and an air outlet formed on the top of the dust removal cylinder. A conical cylinder is fixedly assembled at the bottom of the dust removal cylinder. An isolation cover is arranged inside the dust removal cylinder, and a uniform annular gap is formed between the outer wall of the isolation cover and the inner wall of the dust removal cylinder. A sealing ring is arranged on the inner wall of the isolation cover, and the cleaning mechanism is arranged on the sealing ring.

[0007] In some embodiments, the filtering mechanism comprises a hanger arranged on the sealing ring, a plurality of air vents formed on the hanger, a supporting cage fixedly arranged on the hanger, a motor arranged on the top of the support frame, the hanger being in transmission connection with the output shaft of the motor, and a filter bag sleeved on the outer side of the supporting cage.

[0008] In some embodiments, the cleaning mechanism comprises a pipe frame fixedly arranged on the inner wall of the isolation cover, a suction pipe fixedly arranged on the pipe frame, a docking nozzle arranged along the length direction of the suction pipe, and a throat pipe having one end fixedly connected with the suction pipe and the other end extending into the annular gap between the isolation cover and the dust removal cylinder, and the end of the suction pipe away from the throat pipe being in a closed structure.

[0009] In some embodiments, each adjusting mechanism comprises an adjusting leaf rotatably arranged on the docking nozzle, a connecting column penetrating through the adjusting leaf and extending to the outside of the docking nozzle, a connecting piece fixedly arranged at the top end of the connecting column, a movable rod arranged at the end of the connecting piece away from the connecting column, and a torsional spring sleeved on the connecting column and connected between the connecting piece and the outer wall of the docking nozzle.

[0010] In some embodiments, the control mechanism comprises: a fixed ring fixedly arranged on the throat pipe, one side of the fixed ring protruding from the limiting column; a wave lever slidingly arranged on the limiting column of the fixed ring, a limiting slot being formed in one side of the wave lever, and the two movable rods being embedded in the limiting slot; a rotating shaft penetrating the sealing ring; a variable-diameter wheel arranged at one end of the rotating shaft and abutting against the end of the wave lever away from the fixed ring, the outer ring of the variable-diameter wheel being a variable-diameter structure.

[0011] In some embodiments, the driving mechanism comprises: a plane bearing arranged at the top of one side of the isolation cover; a rotating ring arranged at the top of the plane bearing; a toothless ring fixedly arranged at the top of the rotating ring, a plurality of sets of clamping teeth being uniformly arranged on the inner wall of the toothless ring; a plurality of fan blades uniformly arranged outside the toothless ring; two intermediate gears symmetrically embedded in the sealing ring and meshing with the clamping teeth on the inner wall of the toothless ring; a large gear fixedly arranged at the end of the rotating shaft away from the variable-diameter wheel and located at the center inside the toothless ring, the large gear meshing with the two intermediate gears, and the two intermediate gears being between the large gear and the toothless ring; a dust cover covering the top of the toothless ring.

[0012] In some embodiments, the diameter of the throat pipe is greater than the diameter of the suction pipe, and the connection part of the two is a tapered structure.

[0013] In some embodiments, a plurality of clamping rings are arranged at the top of the outer wall of the filter bag, a plurality of clamping grooves are formed in the hanger, and each clamping ring can be clamped and fixed with the corresponding clamping groove.

[0014] In some embodiments, the support frame, the isolation cover, the motor, the hanger and the supporting cage are coaxially arranged.

[0015] Compared with the prior art, the above technical solution provided by the present application has at least the following technical effects: The cement dust collecting device provided by the application adopts a hierarchical design of cyclone centrifugal coarse separation and filter bag fine filtration, and continuously dynamically removes dust from the filter bag, thereby improving dust recovery efficiency. The filter mechanism adopts a rotatable unfolding structure, and the unfolding design increases the contact area of the filter bag and the dust-containing airflow, thereby improving the trapping efficiency of large-diameter particles. The rotation characteristic cooperates with the close design of the cleaning mechanism to realize 360° dead-angle-free dust removal, solve the problem of filtering efficiency decay caused by local dust accumulation and sticky clumping of traditional filter bags, ensure long-term stable filtering effect, and simultaneously, the double adjustment mechanisms are symmetrically arranged and cooperatively controlled by the control mechanism. The negative pressure effect formed by the airflow flowing through the exhaust port is utilized to balance the suction force through size switching, thereby avoiding the drawbacks of damage to the filter bag caused by excessively strong cleaning and incomplete cleaning caused by excessively weak cleaning. Meanwhile, the dynamic dust removal process does not require shutdown, effectively reduces equipment downtime maintenance time, reduces filter bag replacement frequency and maintenance cost, and the driving mechanism utilizes the airflow power of the air inlet as a power source, without the need for external power supply or additional power equipment, thereby realizing energy self-sufficiency of the control mechanism, the adjustment mechanism and the cleaning mechanism, and greatly reducing device operation energy consumption.

[0016] Additional aspects and advantages of the application will become apparent in the description that follows, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the application will become apparent and be readily appreciated from the description that follows, including the appended drawings. Figure 1 An external structure diagram of a device overall for some embodiments of the application; Figure 2 A structure diagram of a cyclone dust collector for some embodiments of the application; Figure 3 An internal structure diagram of a dust removal cylinder for some embodiments of the application; Figure 4 A structure diagram of an isolation cover and a sealing ring for some embodiments of the application; Figure 5 A structure diagram of a filter mechanism for some embodiments of the application; Figure 6 A structure diagram of a cleaning mechanism and a filter mechanism for some embodiments of the application; Figure 7 An internal structure diagram of a suction pipe for some embodiments of the application; Figure 8 A structure diagram of an adjustment mechanism for some embodiments of the application; Figure 9 A structure diagram of an adjustment mechanism and a control mechanism for some embodiments of the application; Figure 10Structure diagram of the adjusting leaf and the wave lever for some embodiments of the present application; Figure 11 Structure diagram of the adjusting leaf and the wave lever for some embodiments of the present application; Figure 12 Structure diagram of the control mechanism and the driving mechanism for some embodiments of the present application; Figure 13 Structure diagram of the driving mechanism for some embodiments of the present application; Figure 14 Structure diagram of the driving mechanism for some embodiments of the present application; Figure 15 Structure diagram of the driving mechanism for some embodiments of the present application; Figure 16 Structure diagram of the dust removal cylinder air inlet for some embodiments of the present application.

[0018] In the drawings, Figures 1 to 16 The correspondence between the reference signs and the component names is as follows: 100, cyclone dust collector; 110, support frame; 120, dust removal cylinder; 130, conical cylinder; 140, isolation cover; 150, sealing ring; 200, filtering mechanism; 210, hanger; 220, supporting cage; 230, motor; 240, clamping ring; 250, filter bag; 300, cleaning mechanism; 310, pipe frame; 320, suction pipe; 330, docking nozzle; 340, throat pipe; 400, adjusting mechanism; 410, adjusting leaf; 420, connecting column; 430, connecting piece; 440, movable rod; 450, torsional spring; 500, control mechanism; 510, fixed ring; 520, wave lever; 530, rotating shaft; 540, variable diameter wheel; 600, driving mechanism; 610, plane bearing; 620, rotating ring; 630, missing tooth ring; 640, fan blade; 650, intermediate gear; 660, large gear; 670, dust cover. DETAILED DESCRIPTION

[0019] In order to enable a more clear understanding of the above-mentioned objects, features and advantages of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0021] Reference will now be made to Figures 1 to 16 A cement dust collecting device is described according to some embodiments of the present application.

[0022] As Figures 1 to 16 shown, the cement dust collecting device according to some embodiments of the present application comprises a cyclone dust collector 100, a filtering mechanism 200, a cleaning mechanism 300, an adjusting mechanism 400, a control mechanism 500 and a driving mechanism 600. The cyclone dust collector 100 comprises an air inlet and an air outlet. The filtering mechanism 200 is assembled on the cyclone dust collector 100 and comprises a filter bag 250 arranged inside the cyclone dust collector 100 in a rotatable unfolding structure, for separating large-diameter particles in the cement dust. The cleaning mechanism 300 is fixedly arranged on one side of the inner wall of the cyclone dust collector 100, with its cleaning end abutting the outer side of the filter bag 250, so as to realize all-around and dead-angle-free suction in cooperation with the rotation of the filter bag 250. Two adjusting mechanisms 400 are symmetrically arranged on both sides of the suction port of the cleaning mechanism 300, for adjusting the opening and closing size of the suction port. The control mechanism 500 is arranged on the cyclone dust collector 100 and is in transmission connection with the two adjusting mechanisms 400, and is used to control the coordinated action of the two adjusting mechanisms 400. The driving mechanism 600 is arranged at the air inlet of the cyclone dust collector 100 and is in transmission connection with the control mechanism 500, and can collect the air flow power at the air inlet and convert it into the driving source of the control mechanism 500.

[0023] In this embodiment, the dust-containing airflow enters the device from the air inlet of the cyclone dust collector 100, and the airflow drives the driving mechanism 600 to rotate during the flow process. The driving mechanism 600 converts the airflow power into mechanical energy and transmits it to the control mechanism 500, thereby completing the power supply of the control mechanism 500. Subsequently, the dust-containing airflow enters the main area of the cyclone dust collector 100, and part of the large-particle dust is preliminarily separated under the action of centrifugal force and settles at the bottom of the cyclone dust collector 100 under the action of gravity, thereby achieving preliminary dust removal. The coarsely separated dust-containing airflow continues to flow through the filtering mechanism 200, and the filter bag 250 in the unfolded state traps large-particle particles in the airflow. Fine particles and sticky dust adhere to the outside of the filter bag 250. The filtered gas passes through the filter bag 250 and is discharged from the air outlet of the cyclone dust collector 100, thereby achieving standard emission. In this process, the filter bag 250 always maintains a slow rotating state. As the filtering process continues, the dust on the outside of the filter bag 250 gradually thickens. At this time, the control mechanism 500 starts to operate under the action of the power provided by the driving mechanism 600, and drives the two adjusting mechanisms 400 to act synchronously. The adjusting mechanism 400 precisely adjusts the opening and closing size of the suction port of the cleaning mechanism 300, thereby achieving regular opening and closing. When the airflow passes through the air outlet of the cleaning mechanism 300, a negative pressure is formed at the suction port. The suction force of the smaller suction port is larger. In order to prevent the suction force from being too large and causing dust congestion, the adjusting mechanism 400 automatically switches the size of the suction port to make the suction strength appropriate. At the same time, the cleaning end of the suction mechanism is closely attached to the rotating filter bag 250, rotates with the filter bag 250, and realizes omnidirectional and dead-angle-free suction of the outer surface of the filter bag 250. The sticky dust and caked dust adhering to the filter bag 250 are completely stripped and collected. The cleaned filter bag 250 restores the filtering performance.

[0024] In this design, the filtering mechanism 200 adopts a rotatable unfolding structure. The unfolding design increases the contact area between the filter bag 250 and the dust-containing airflow, thereby improving the trapping efficiency of large-particle particles. The rotating characteristic cooperates with the close-fitting design of the cleaning mechanism 300 to realize 360° dead-angle-free dust cleaning, thereby solving the problem of filtering efficiency decay caused by local dust accumulation and sticky caking of the traditional filter bag 250, and ensuring long-term stable filtering effect. At the same time, the two adjusting mechanisms 400 are symmetrically arranged and cooperatively controlled by the control mechanism 500. By utilizing the negative pressure effect formed by the airflow flowing through the air outlet, the adjusting mechanism 400 balances the suction force by switching the size, thereby avoiding the disadvantages of traditional dust cleaning, such as damage to the filter bag 250 caused by excessive dust cleaning and incomplete cleaning caused by weak cleaning. At the same time, the dynamic dust cleaning process does not need to stop, thereby effectively reducing the equipment downtime maintenance time, reducing the filter bag 250 replacement frequency and maintenance cost. Moreover, the driving mechanism 600 utilizes the airflow power of the air inlet as a power source, thereby eliminating the need for external power supply or additional power equipment. The driving mechanism 600 realizes energy self-sufficiency of the control mechanism 500, the adjusting mechanism 400 and the cleaning mechanism 300, thereby greatly reducing the device operation energy consumption.

[0025] In some possible embodiments, as Figures 2 to 4As shown, the cyclone dust collector 100 comprises a support frame 110, a dust removal cylinder 120 arranged on the support frame 110, the dust removal cylinder 120 being provided with an air inlet on one side of the outside and an air outlet on the top, a conical cylinder 130 fixedly assembled at the bottom of the dust removal cylinder 120, a separation cover 140 arranged in the inside of the dust removal cylinder 120, the outer wall of the separation cover 140 and the inner wall of the dust removal cylinder 120 forming a uniform annular gap, and a sealing ring 150 arranged on the inner wall of the separation cover 140, and a cleaning mechanism 300 arranged on the sealing ring 150.

[0026] In this embodiment, the dust-containing air flow enters the annular gap between the dust removal cylinder 120 and the separation cover 140 from the air inlet on one side of the dust removal cylinder 120 in a tangential direction. Since the air inlet direction is consistent with the tangential direction of the cylinder wall, the air flow forms a high-speed rotating vortex in the annular gap. Under the action of centrifugal force, the large-particle cement dust in the air flow is thrown to the inner wall of the dust removal cylinder 120. The dust thrown to the inner wall slides down the cylinder wall to the bottom conical cylinder 130 under the action of gravity and the downward flow of the air flow, is gathered through the conical cylinder 130, and is discharged from the bottom air outlet, completing rough dust removal. The gas after removing the large-particle dust continues to flow upward and is discharged from the opening at the top of the separation cover 140 through the filter bag 250. At the same time, the sealing ring 150 seals the gap between the separation cover 140 and the cleaning mechanism 300, ensuring that all the air flow enters the filtering mechanism 200.

[0027] In some possible embodiments, as shown in the drawings, Figures 2 to 5 As shown, the filtering mechanism 200 comprises a hanging bracket 210 arranged on the sealing ring 150, a plurality of air vents being formed in the hanging bracket 210, a supporting cage 220 fixedly arranged on the hanging bracket 210, a motor 230 arranged at the top of the support frame 110, the hanging bracket 210 being in transmission connection with the output shaft of the motor 230, and a filter bag 250 sleeved outside the supporting cage 220.

[0028] In this embodiment, after the motor 230 is started, the output shaft thereof drives the hanging bracket 210 to rotate synchronously. Since the supporting cage 220 is fixedly connected with the hanging bracket 210 and the filter bag 250 is closely attached to the supporting cage 220, the three form a rigid transmission, realizing low-speed rotation of the filter bag 250. When the dust-containing air flow after rough separation by the cyclone dust collector 100 enters the filtering mechanism 200 region, the air flow passes through the filter bag 250, the material of the filter bag 250 traps fine particles and sticky dust in the air flow, the dust adheres to the outside of the filter bag 250 to form a dust layer, and the filtered clean air flow passes through the inside of the filter bag 250, enters the air outlet at the top of the dust removal cylinder 120 through the air vents in the hanging bracket 210, and is discharged. In this process, the continuous rotation of the filter bag 250 causes each region on the outside to be uniformly stressed, and in cooperation with the cleaning mechanism 300, full-range and dead-angle-free dust cleaning of the outer surface of the filter bag 250 is realized, and the peeled-off dust is re-participated in filtering.

[0029] In some possible embodiments, as shown in the drawings, Figures 6 to 8As shown, the cleaning mechanism 300 comprises: a pipe holder 310 fixedly arranged on the inner wall of the isolation cover 140; a suction pipe 320 fixedly arranged on the pipe holder 310; a docking nozzle 330 arranged along the length direction of the suction pipe 320; and a throat pipe 340 having one end fixedly connected with the suction pipe 320 and the other end extending into the annular gap between the isolation cover 140 and the dust removal cylinder 120, and the end of the suction pipe 320 away from the throat pipe 340 being a closed structure.

[0030] In this embodiment, when the main airflow entering the air inlet of the dust removal cylinder 120 flows through the inlet end of the throat pipe 340, a low-pressure area is formed inside the throat pipe 340 due to the tapered structure of the throat pipe 340 and the Venturi effect, and then the negative pressure is transmitted to each docking nozzle 330 through the suction pipe 320. At this time, the docking nozzle 330 can accurately act on the dust layer outside the filter bag 250 due to the optimal gap with the rotating filter bag 250, and the negative pressure suction force thereof can strip the sticky dust and the agglomerated dust from the surface of the filter bag 250. The stripped dust enters the suction pipe 320 through the docking nozzle 330 under the action of the negative pressure, and is then sucked into the main airflow of the dust removal cylinder 120 through the throat pipe 340, and is centrifugally separated together with the large-particle-size dust in the main airflow, is collected by the cone cylinder 130, and is discharged, thereby completing the closed loop of dust cleaning and dust recovery.

[0031] In some possible embodiments, as shown in Figures 8 to 10 As shown, each adjusting mechanism 400 comprises: an adjusting blade 410 rotationally arranged on the docking nozzle 330; a connecting column 420 penetratingly arranged on the adjusting blade 410 and extending to the outside of the docking nozzle 330; a connecting piece 430 fixedly arranged at the top end of the connecting column 420; a movable rod 440 arranged at the end of the connecting piece 430 away from the connecting column 420; and a torsional spring 450 sleeved on the connecting column 420 and connected between the connecting piece 430 and the outer wall of the docking nozzle 330.

[0032] In this embodiment, when the control mechanism 500 acts, the limiting slot pushes the movable rod 440 to do reciprocating linear motion along the axial direction, and the self-adaptive cooperation between the movable rod 440 and the undulating lever 520 transmits the linear motion to the connecting piece 430, and the connecting piece 430 converts the linear motion into the rotary motion of the connecting column 420, and the connecting column 420 drives the adjusting blade 410 on the inside to rotate synchronously, thereby realizing the opening and closing size adjustment of the suction port of the docking nozzle 330. When the undulating lever 520 approaches the fixed ring 510, the opening degree of the adjusting blade 410 decreases, and the suction strength increases. When the undulating lever 520 moves away from the fixed ring 510, the opening degree of the adjusting blade 410 increases, and the suction strength decreases. In this process, the torsional spring 450 is always in a deformed state, thereby ensuring that the movable rod 440 is always in abutment with the sliding slot of the undulating lever 520, and ensuring the transmission stability.

[0033] In some possible embodiments, as shown in Figures 9 to 13As shown, the control mechanism 500 comprises: a fixed ring 510 fixedly arranged on the throat pipe 340, the fixed ring 510 being provided with a limiting column on one side; a wave lever 520 slidingly arranged on the limiting column of the fixed ring 510, the wave lever 520 being provided with a limiting slot on one side inside, and the two movable rods 440 being embedded in the limiting slot; a rotating shaft 530 penetrating the sealing ring 150; and a variable-diameter wheel 540 arranged at one end of the rotating shaft 530 and abutting against the end of the wave lever 520 away from the fixed ring 510, the outer ring of the variable-diameter wheel 540 being a variable-diameter structure.

[0034] In this embodiment, the driving mechanism 600 drives the rotating shaft 530 to rotate around the axis, and the variable-diameter wheel 540 fixed to the rotating shaft 530 rotates synchronously. Since the outer ring of the variable-diameter wheel 540 is a variable-diameter cam structure and abuts against the wave lever 520 closely, the periodic change of the diameter of the outer ring of the variable-diameter wheel 540 during the rotation of the variable-diameter wheel 540 generates a periodic thrust on the wave lever 520. When the large-diameter section of the variable-diameter wheel 540 contacts the wave lever 520, the wave lever 520 is pushed to slide forward along the limiting column of the fixed ring 510, and when the small-diameter section of the variable-diameter wheel 540 contacts the wave lever 520, the wave lever 520 slides backward under the elastic resetting action of the torsion springs 450 of the two adjusting mechanisms 400 on both sides, so as to realize the reciprocating linear motion of the wave lever 520. When the wave lever 520 slides, the limiting slot inside the wave lever 520 synchronously drives the two embedded movable rods 440 to swing, so as to convert the linear motion into the rotary power of the movable rods 440, drive the two groups of adjusting leaves 410 to rotate synchronously, and finally realize the periodic regular adjustment of the opening and closing size of the suction port of the docking nozzle 330.

[0035] In some possible embodiments, as shown in FIG. 6, Figures 12 to 16 As shown, the driving mechanism 600 comprises: a plane bearing 610 arranged at the top of one side of the isolation cover 140; a rotating ring 620 arranged at the top of the plane bearing 610; a missing tooth ring 630 fixedly arranged at the top of the rotating ring 620, the inner wall of the missing tooth ring 630 being uniformly and spacedly provided with a plurality of clamping teeth; a plurality of fan leaves 640 uniformly arranged outside the missing tooth ring 630; two intermediate gears 650 symmetrically embedded in the sealing ring 150 and meshing with the clamping teeth on the inner wall of the missing tooth ring 630; a large gear 660 fixedly arranged at the end of the rotating shaft 530 away from the variable-diameter wheel 540 and located inside the center of the missing tooth ring 630, the large gear 660 meshing with the two intermediate gears 650, and the two intermediate gears 650 being interposed between the large gear 660 and the missing tooth ring 630; and a dust cover 670 covering the top of the missing tooth ring 630.

[0036] In this embodiment, when the dust-containing airflow enters from the inlet of the dust removal cylinder 120, the airflow impacts the fan blades 640 on the outer wall of the cogwheel 630, and the fan blades 640 drive the cogwheel 630 to rotate under the action of the airflow kinetic energy. The cogwheel 630 transmits the rotating power to the plain bearing 610 through the rotating ring 620 at the bottom, and the plain bearing 610 provides smooth support for the rotating ring 620 to ensure the movement of the overall rotating part. When the inner wall of the cogwheel 630 rotates, the teeth periodically engage with the two intermediate gears 650. When the teeth contact the intermediate gears 650, the intermediate gears 650 are driven to rotate. When the toothless area corresponds to the intermediate gears 650, the intermediate gears 650 are temporarily stopped, realizing intermittent power transmission. The intermediate gears 650 reduce the high-speed rotation of the cogwheel 630 to the low-speed rotation of the large gear 660 through the meshing with the large gear 660. The large gear 660 drives the rotating shaft 530 to rotate synchronously, and transmits stable low-speed rotating power to the control mechanism 500 to provide power for the action of the adjusting mechanism 400.

[0037] In some possible embodiments, as shown in Figure 7 The throat pipe 340 has a larger diameter than the suction pipe 320, and the connection part is tapered.

[0038] In this embodiment, the dust-containing airflow enters along the tangent direction through the inlet of the dust removal cylinder 120, and forms a high-speed rotating main airflow in the annular gap between the dust removal cylinder 120 and the isolation cover 140. When the high-speed main airflow flows through the inlet end of the throat pipe 340, the high-speed flow of the main airflow drives the gas in the throat pipe 340 to form directional flow, thereby forming negative pressure in the throat. Because the connection part is tapered and the diameter of the suction pipe 320 is smaller than that of the throat pipe 340, the negative pressure intensity in the suction pipe 320 is improved.

[0039] In some possible embodiments, as shown in Figure 5 The outer wall of the filter bag 250 is provided with a plurality of clamping rings 240 at the top, and the hanger 210 is provided with a plurality of clamping grooves. Each clamping ring 240 can be clamped and fixed in the corresponding clamping groove.

[0040] In this embodiment, the clamping ring 240 can quickly complete the installation and disassembly of the filter bag 250. The mechanical clamping replaces the traditional bolt fixing or band winding, improves the assembly efficiency, and shortens the disassembly and replacement time of the filter bag 250.

[0041] In some possible embodiments, as shown in Figure 3 The support frame 110, the isolation cover 140, the motor 230, the hanger 210, and the support cage 220 are coaxially arranged.

[0042] The cement dust collecting device works, the dust-containing airflow enters from the tangent air inlet of the cyclone dust collector 100 dust removal cylinder 120, first impacts the fan blade 640 of the driving mechanism 600, the fan blade 640 drives the gear ring 630 to rotate under the action of airflow kinetic energy, the gear ring 630 realizes stable operation through the cooperation of the bottom rotating ring 620 and the plain bearing 610, the clamping teeth on the inner wall of the gear ring 630 are periodically engaged with the two intermediate gears 650, the high-speed rotating power is transmitted to the central gear 660 after being decelerated, the central gear 660 drives the rotating shaft 530 of the control mechanism 500 to rotate synchronously at low speed, the conversion of airflow kinetic energy into mechanical rotating power is completed, and the self-sufficient power without external power supply is provided for the subsequent adjusting and cleaning mechanism 300, the dust-containing airflow enters the annular gap between the dust removal cylinder 120 and the isolation cover 140, because the inlet direction is consistent with the tangent of the cylinder wall, a high-speed rotating vortex is formed, under the action of centrifugal force, large-particle dust is thrown to the inner wall of the dust removal cylinder 120, slides along the wall to the bottom cone cylinder 130, converges and is discharged, coarse dust removal is completed, the airflow from which the large-particle dust is removed continues to flow upwards and enters the filtering mechanism 200 area, at this time, the motor 230 of the filtering mechanism 200 drives the hanger 210 to rotate, the support cage 220 fixed with the hanger 210 and the filter bag 250 sleeved thereon rotate synchronously at low speed, when the airflow passes through the filter bag 250, fine particles and sticky dust are intercepted and attached to the outside of the filter bag 250, clean airflow enters the exhaust port at the top of the dust removal cylinder 120 through the inside of the filter bag 250 and the ventilation opening of the hanger 210, and is discharged, realizing fine filtration, as the filtration continues, the dust layer on the outside of the filter bag 250 thickens, at this time, the control mechanism 500 and the adjusting mechanism 400 cooperate to clean the dust, the rotating shaft 530 and the variable diameter wheel 540 are rotated by the central gear 660, the cam type outer ring of the variable diameter wheel 540 periodically pushes the fluctuating lever 520 to reciprocate along the limiting column of the fixed ring 510, the limiting groove of the fluctuating lever 520 synchronously drives the swing of the movable rod 440 of the adjusting mechanism 400 on both sides, the movable rod 440 drives the connecting column 420 to rotate through the connecting piece 430, so that the adjusting blade 410 on the butt joint nozzle 330 realizes periodic adjustment of the opening and closing size, at the same time, when the main airflow in the annular gap passes through the throat pipe 340 of the cleaning mechanism 300, the Venturi effect is generated due to the tapered connection structure of the throat pipe 340 and the suction pipe 320, a stable negative pressure is formed at the suction pipe 320 and the butt joint nozzle 330, the size of the suction port is dynamically switched by the adjusting blade 410, and 360° dead angle-free suction is realized by cooperating with the rotating filter bag 250, so that the sticky and caked dust is completely stripped, the dust stripped by the butt joint nozzle 330 is re-entered into the main airflow in the annular gap through the suction pipe 320 and the throat pipe 340 under the action of negative pressure, and the main airflow is subjected to centrifugal separation again, and finally the large-particle dust removed by coarse dust removal is collected and discharged together with the large-particle dust, realizing closed loop dust recovery.

[0043] In the present application, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium. The term "plurality" refers to two or more, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0047] In the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, and the like made within the principle and technical scope of the present application should be included in the protection scope of the present application.

Claims

1. A cement dust collecting device characterized by comprising: The utility model relates to a cement dust removal device, which comprises a cyclone dust collector, a filter mechanism, a cleaning mechanism, two adjusting mechanisms, a control mechanism and a driving mechanism. The cyclone dust collector comprises a support frame, a dust removal cylinder, a conical cylinder, a separation cover and a sealing ring. The filter mechanism comprises a hanger, a supporting cage, a motor and a filter bag. The cleaning mechanism comprises a pipe frame, a suction pipe, a butt joint nozzle and a throat pipe. Each adjusting mechanism comprises an adjusting blade, a connecting column, a connecting piece, a movable rod and a torsional spring. The control mechanism comprises a fixed ring, a wave lever, a rotating shaft and a variable-diameter wheel. The driving mechanism comprises a plane bearing and a rotating ring.

2. The cement dust collection device of claim 1, wherein, The utility model relates to a cement dust removal device, which comprises a cyclone dust collector, a filter mechanism, a cleaning mechanism, two adjusting mechanisms, a control mechanism and a driving mechanism. The cyclone dust collector comprises a support frame, a dust removal cylinder, a conical cylinder, a separation cover and a sealing ring. The filter mechanism comprises a hanger, a supporting cage, a motor and a filter bag. The cleaning mechanism comprises a pipe frame, a suction pipe, a butt joint nozzle and a throat pipe. Each adjusting mechanism comprises an adjusting blade, a connecting column, a connecting piece, a movable rod and a torsional spring. The control mechanism comprises a fixed ring, a wave lever, a rotating shaft and a variable-diameter wheel.

3. The cement dust collection device of claim 2, wherein, The driving mechanism comprises a plane bearing and a rotating ring. ​ ​ ​ ​ 4. The cement dust collection device of claim 3, wherein ​ ​ ​ ​ ​ 5. The cement dust collection device of claim 4, wherein, ​ ​ ​ ​ ​ ​ 6. The cement dust collection device of claim 5, wherein, ​ ​ ​ ​ ​ 7. The cement dust collection device of claim 6, wherein, ​ ​ ​ A toothless ring is fixedly arranged on the top of the rotating ring, and multiple groups of clamping teeth are uniformly arranged on the inner wall of the toothless ring; Multiple fan leaves are uniformly arranged outside the toothless ring; Two intermediate gears are symmetrically embedded in the sealing ring and are in meshing engagement with the clamping teeth on the inner wall of the toothless ring; A large gear is fixedly arranged at the end of the rotating shaft away from the variable-diameter wheel and is located at the inner center of the toothless ring, the large gear is in meshing engagement with the two intermediate gears, and the two intermediate gears are interposed between the large gear and the toothless ring; A dust cover is arranged on the top of the toothless ring.

8. The cement dust collection device of claim 4, wherein, The diameter of the throat pipe is larger than that of the suction pipe, and the joint between the two is in a tapered structure.

9. The cement dust collection device of claim 3, wherein, Multiple clamping rings are arranged on the top of the outer wall of the filter bag, multiple clamping grooves are formed in the hanger, and each clamping ring can be clamped and fixed with the corresponding clamping groove.

10. The cement dust collecting device according to any one of claims 1 to 9, characterized in that, The support frame, the isolation cover, the motor, the hanger and the supporting cage are coaxially arranged.

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