A dust removal device for producing calcium hydroxide product and a method of using the same

Abstract

The application discloses a dust removal device for calcium hydroxide product production and a use method thereof, and belongs to the technical field of dust removal devices. The dust removal device comprises a dust removal assembly, the dust removal assembly comprises a dust removal bin and a dust removal cloth bag, the upper end of the dust removal bin is provided with a clean gas output end, the clean gas output end is connected with a Roots blower, a clean gas temporary storage mechanism is arranged on the dust removal bin, and the dust removal bin is provided with a backflushing assembly in the inner cavity. The dust removal device comprises a dust suction pipe, a pressurized spraying and backflushing mechanism and a backflushing assembly, and the temperature and the pressure of the backflushing gas source can be improved without relying on an external heater. On one hand, calcium hydroxide dust adhered to the dust removal cloth bag can be effectively removed, and the dust removal cloth bag can be prevented from being caked; on the other hand, the air inlet pipeline can be preheated by using the waste heat of the system itself, and condensation in the air inlet pipeline due to temperature difference can be prevented.

Description

Technical Field

[0001] This application relates to the field of industrial dust removal technology, and in particular to a dust removal device for the production of calcium hydroxide products. Background Technology

[0002] Calcium hydroxide, also known as quicklime, is an important industrial raw material. Its production process, especially the processes of lime digestion, drying, grinding, transportation and packaging, generates a large amount of fine dust.

[0003] Currently, bag filters are the mainstream choice for treating this type of dust due to their high filtration accuracy. However, in practical applications, it has been found that when ordinary bag filters are used for calcium hydroxide dust, if the temperature of the pipes or the wall of the dust collector is lower than the dew point temperature of the gas, water vapor in the exhaust gas will condense and precipitate when the high-temperature, high-humidity process exhaust gas enters the dust collection system.

[0004] When the precipitated liquid water comes into contact with calcium hydroxide dust, it not only causes deliquescence but also promotes hydration and even carbonization of the dust, forming a dense, hard, cement-like scale layer on the surface of the filter bag and inside the fibers. This scale layer will severely block the pores of the filter bag, leading to increased system operating resistance, a sharp reduction in filtration air volume, and difficulty in dust removal.

[0005] In other words, existing technologies have the following technical problems: ordinary dust removal devices used in calcium hydroxide production cannot effectively solve the problem of condensation and caking caused by the combined effects of dust deliquescence and temperature variations during operation. Therefore, a dust removal device for calcium hydroxide production is proposed to address the above problems. Summary of the Invention

[0006] This application provides a dust removal device for the production of calcium hydroxide products, which solves the problem that ordinary dust removal devices used in the production of calcium hydroxide in the prior art are difficult to effectively solve the problem of condensation and caking caused by the combined effects of the deliquescent properties of dust and changes in operating temperature.

[0007] According to one aspect of this application, a dust removal device for the production of calcium hydroxide products is provided, comprising: The dust collection system includes a dust collection chamber and a dust collection bag, which are used to filter and separate dust-laden gas and trap dust in the dust collection bag. The upper end of the dust collection chamber is equipped with a clean air output end, which is connected to a Roots blower to extract the filtered clean gas. Clean gas storage mechanism: The clean gas storage mechanism is used to temporarily store and buffer the clean gas delivered by the Roots blower. A pressurization jetting mechanism is fixedly connected to one side of the clean gas storage mechanism. A dust-laden gas inlet is provided on one side of the dust collection chamber. A dust suction pipe is fixedly connected to one end of the dust-laden gas inlet. A preheating structure is provided inside the dust suction pipe. The dust collection chamber is equipped with a backflushing component, which is connected to the pressurized spraying mechanism through the preheating structure of the dust suction pipe.

[0008] Furthermore, the clean gas storage mechanism includes an insulated chamber and a telescopic gas storage bladder. The telescopic gas storage bladder is fixedly connected to the inner cavity of the insulated chamber and is used to store the clean gas delivered by the Roots blower.

[0009] Furthermore, a frame is installed inside the dust collection chamber, and dust collection bags are fixedly connected to the inner wall of the frame to form a filter body. The dust collection bags are used to intercept dust particles in the gas.

[0010] Furthermore, the preheating structure of the dust suction pipe includes a first annular sleeve, a second annular sleeve, and a spiral guide ridge; gas flow channels are provided inside the first annular sleeve, the second annular sleeve, and the spiral guide ridge. The first and second annular sleeves are both fixedly installed on the outer wall of the dust suction pipe. Several spiral guide ridges are provided, and the spiral guide ridges are distributed in an annular shape at equal intervals and fixed on the inner wall of the dust suction pipe, forming a spiral guide structure embedded in the pipe wall.

[0011] Furthermore, the first annular sleeve is connected to the gas flow channel of the spiral guide ridge, and the spiral guide ridge is connected to the gas flow channel of the second annular sleeve, forming a continuous heating circuit around the dust suction pipe. The gas flow channel of the first annular sleeve is connected to the pressurized jetting mechanism.

[0012] Furthermore, the backflushing assembly includes an annular pipe, backflushing nozzles, and an air blowing pipe. The annular pipe is fixedly installed on the inner wall of the dust removal chamber, and several backflushing nozzles are fixedly installed on the annular pipe. One end of an air-blowing pipe is fixedly connected to one side of the annular tube, and the other end of the air-blowing pipe extends into the gas flow channel of the second annular sleeve and is fixedly connected to the second annular sleeve to form a gas passage.

[0013] Furthermore, the booster jet mechanism includes a fixed cylinder, a moving piston, and a pulse booster unit; A movable piston is slidably connected in the inner cavity of the fixed cylinder, and a piston guide rod is fixedly connected to the upper surface of the movable piston. The upper end of the piston guide rod is connected to a pulse booster, which drives the moving piston to reciprocate, thereby periodically compressing the gas.

[0014] Furthermore, the pulse boosting section of the booster jetting mechanism includes a booster spring, a contact plate, a rotating seat, and a contact roller; A contact plate is fixedly connected to the upper end of the piston guide rod; One end of a pressure-boosting spring is fixedly connected to the bottom surface of the contact plate, and the other end of the pressure-boosting spring is fixedly connected to the upper surface of the fixed cylinder. The rotating seat is located on the side wall of the insulation chamber and is rotatably connected to the insulation chamber. The rotating seat is located on the side of the contact plate. Several support arms are fixedly connected to the arc-shaped wall of the rotating seat. One end of the support arm is rotatably connected to a contact roller. The contact roller is used to contact the bottom surface of the contact plate and push it upward.

[0015] Furthermore, a motor bracket is fixedly connected to the side wall of the heat preservation chamber, a drive motor is fixedly installed on the motor bracket, and a second transmission wheel is fixedly connected to the end of the output shaft of the drive motor. A first transmission wheel is coaxially fixedly connected to one side of the rotating base, and a transmission belt is sleeved between the first transmission wheel and the second transmission wheel.

[0016] Furthermore, a gas intake pipe and a gas output pipe are fixedly connected to the bottom side of the inner cavity of the fixed cylinder. One end of the gas intake pipe extends into the inner cavity of the telescopic air reservoir, and one end of the gas output pipe extends into the gas flow channel of the first annular sleeve and is fixedly connected to the first annular sleeve.

[0017] It also includes an auxiliary vibration mechanism, which includes a guide sleeve, a vibration slider, and a linkage vibration unit; The guide sleeve is fixedly installed in the inner cavity of the dust removal chamber, and a vibrating slider is slidably connected in the inner cavity of the guide sleeve. The vibrating slider is fixedly connected to the frame. The linkage vibration part of the auxiliary vibration mechanism includes a spring, a vibration guide rod, a connecting plate, a rotating disk, a protrusion, a first linkage wheel, and a second linkage wheel; One end of a spring is fixedly connected to one side of the vibrating slider, and the other end of the spring is fixedly connected to the inner wall of the guide sleeve. One end of a vibrating guide rod is fixedly connected to the other side of the vibrating slider. The other end of the vibrating guide rod penetrates the inner wall of the dust removal chamber and extends to the outside of the wall. A connecting plate is fixedly connected to one end of the vibrating guide rod, and a contact protrusion is fixedly connected to the side wall of the connecting plate. A rotating disk is rotatably connected to the side wall of the dust collection chamber. Several protrusions are fixedly connected to the side wall of the rotating disk. The protrusions are evenly distributed in a circle and are used to periodically contact the protrusions and lift the connecting plate during rotation. The side wall of the dust collection chamber is rotatably connected to a second linkage wheel, which is connected to the rotating disk via a transmission mechanism. The first linkage wheel is coaxially and fixedly connected to the rotating base, and a linkage belt is sleeved between the first linkage wheel and the second linkage wheel. In order to solve the technical problems of ordinary dust removal devices in the prior art, which are prone to condensation and caking when cleaning calcium hydroxide dust, and insufficient utilization of heat energy, this application designs a composite dust removal device with waste heat recovery, gas pressurization and mechanical auxiliary dust removal. The overall technical solution composed of dust suction pipe, pressurized spray mechanism and backflushing component can increase the temperature and pressure of backflushing air source without relying on external heater. On the one hand, it can more effectively remove calcium hydroxide dust attached to the dust collector bag and prevent caking and bag sticking. On the other hand, it can also use the system's own waste heat to preheat the air inlet pipe and prevent condensation in the air inlet pipe due to temperature difference. It has the dual effect of energy saving and anti-clogging, and is particularly suitable for the production environment of hygroscopic powders such as calcium hydroxide. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application; Figure 2 This is a front view of one embodiment of the present application. Figure 3 This is a schematic diagram of the internal structure of the rear side according to an embodiment of this application; Figure 4 This is a schematic diagram of the internal structure of a dust removal component according to an embodiment of this application; Figure 5 This is a schematic internal plan view of a dust removal assembly according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a dust suction pipe according to an embodiment of this application; Figure 7 This is a schematic diagram of the preheating structure of a dust suction pipe according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a pressurized jetting mechanism according to an embodiment of this application; Figure 9 This is one embodiment of the present application. Figure 8 A magnified structural diagram of point A; Figure 10 This is one embodiment of the present application. Figure 1 A magnified structural diagram of point A; Figure 11 This is one embodiment of the present application. Figure 8 A magnified structural diagram of point B; Figure 12 This is a schematic diagram of the structure of a support arm according to one embodiment of this application.

[0020] In the picture: 1. Dust removal components; 101. Dust collection chamber; 102. Clean air output end; 103. Dust-laden gas input end; 104. Dust discharge outlet; 105. Frame; 106. Dust collector bag; 107. Support frame; 2. Dust suction pipe; 201. First annular sleeve; 202. Second annular sleeve; 203. Spiral guide ridge; 3. Roots blower; 4. Clean air storage mechanism; 401. Insulated chamber; 402. Telescopic air storage bag; 5. Install the base; 6. Backflush assembly; 601. Ring pipe; 602. Backflush nozzle; 603. Air blowing pipe; 7. Pressurized jetting mechanism; 701. Fixed cylinder; 702. Moving piston; 703. Piston guide rod; 704. Contact plate; 705. Pressurized spring; 706. Fixed guide rod; 707. Rotating seat; 708. Support arm; 7081. Fixed arm; 7082. Moving arm; 7083. Fixed block; 7084. Adjusting screw; 7085. Adjusting knob; 7086. Rotating rod; 709. Contact roller; 710. First transmission wheel; 711. Motor bracket; 712. Second transmission wheel; 713. Transmission belt; 714. Drive motor; 715. Gas intake pipe; 716. Air blowout output pipe; 8. Auxiliary vibration mechanism; 801. First linkage wheel; 802. Second linkage wheel; 803. Linkage belt; 804. Rotary disk; 805. Protrusion; 806. Guide sleeve; 807. Vibration slider; 808. Spring; 809. Vibration guide rod; 810. Connecting plate; 811. Contact protrusion. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] Please see Figure 1 and Figure 2 As shown, a dust removal device for calcium hydroxide product production includes: Dust removal component 1 includes a dust removal chamber 101 and a dust removal bag 106, which are used to filter and separate dust-laden gas and trap dust in the dust removal bag 106. The upper end of the dust collection chamber 101 is provided with a clean air output end 102, which is connected to the Roots blower 3 and is used to extract the filtered clean gas.

[0023] Clean gas storage mechanism 4 is used to temporarily store and buffer the clean gas delivered by the Roots blower 3. A pressurization jetting mechanism 7 is fixedly connected to one side of the clean gas storage mechanism 4.

[0024] A dust-laden gas inlet 103 is provided on one side of the dust collection chamber 101. A dust suction pipe 2 is fixedly connected to one end of the dust-laden gas inlet 103. A preheating structure is provided inside the dust suction pipe 2.

[0025] The dust collection chamber 101 is equipped with a backflushing assembly 6. The backflushing assembly 6 is connected to the pressurized spraying mechanism 7 through the preheating structure of the dust suction pipe 2. It is used to receive the pressurized and heated gas and to spray and clean the dust collection bag 106.

[0026] This application presents an integrated technical solution consisting of a dust suction pipe 2, a pressurized jetting mechanism 7, and a backflushing component 6. This solution can increase the temperature and pressure of the backflushing air source without relying on an external heater. On the one hand, it can more effectively remove calcium hydroxide dust adhering to the dust collector bag 106 and prevent the bag from caking. On the other hand, it can also use the system's own waste heat to preheat the air intake pipe and prevent condensation in the air intake pipe due to temperature difference. This achieves the dual effects of energy saving and anti-clogging, and is particularly suitable for the production environment of hygroscopic powders such as calcium hydroxide.

[0027] In one specific embodiment of this application, see [reference]. Figure 1 and Figure 2 As shown, a dust discharge port 104 is fixedly provided at the lower end of the dust removal chamber 101 for collecting and discharging the removed dust. A support frame 107 is fixedly connected to the outer wall of the dust removal chamber 101. The bottom end of the support frame 107 is fixedly connected to the mounting base 5 to form a stable support structure.

[0028] The Roots blower 3 is fixedly installed on the outer wall of the clean air storage mechanism 4. One end of the clean air input pipe 301 is fixedly connected to the input end of the Roots blower 3, and the other end of the clean air input pipe 301 is connected to the clean air output end 102. The output end of the Roots blower 3 is fixedly connected to the clean air output pipe 302. Through this technical solution, a stable negative pressure can be formed in the dust removal chamber 101 by the continuous suction of the Roots blower 3, thereby drawing the dust-laden gas from the dust suction pipe 2, and then purifying the gas by passing through the filter bag, thus providing the main airflow power of the system.

[0029] Further, see Figure 3 As shown, the clean gas storage mechanism 4 includes an insulated chamber 401 and a telescopic air storage bladder 402. The insulated chamber 401 is fixedly installed on the upper surface of the mounting base 5. The telescopic air storage bladder 402 is fixedly connected to the inner cavity of the insulated chamber 401. One end of the clean gas output pipe 302 extends into the inner cavity of the telescopic air storage bladder 402 and is fixedly connected to the telescopic air storage bladder 402. The telescopic air storage bladder 402 is used to store the clean gas delivered by the Roots blower 3.

[0030] Through this technical solution, a certain amount of purified gas can be temporarily stored by setting a telescopic air storage bladder 402, thereby providing a stable gas source for the backflushing dust removal process. At the same time, the heat preservation function of the heat preservation chamber 401 can keep the high-temperature purified gas warm, reduce heat loss, and maintain the gas temperature, so that it can still have a high temperature when used as a backflushing gas source, and can also be used to heat the dust suction pipe 2.

[0031] In a preferred embodiment of this application, see [reference] Figure 4 and Figure 5 As shown, a frame 105 is provided in the inner cavity of the dust collection chamber 101, and a dust collection bag 106 is fixedly connected to the inner wall of the frame 105 to form a filter body. The dust collection bag 106 is used to intercept dust particles in the gas.

[0032] With this technical solution, when gas containing calcium hydroxide dust enters the dust collection chamber 101, and passes through the dust collection bag 106 supported by the frame 105 from bottom to top or according to the designed flow channel, the dust is trapped at the filter bag, while the clean gas passes through the filter bag into its internal cavity and gathers upward to the clean gas output end 102, thus realizing gas-solid separation.

[0033] As a preferred technical solution, please refer to Figure 6 and Figure 7 As shown, the preheating structure of the dust suction pipe 2 includes a first annular sleeve 201, a second annular sleeve 202, and a spiral guide ridge 203; gas flow channels are provided inside the first annular sleeve 201, the second annular sleeve 202, and the spiral guide ridge 203.

[0034] The first annular sleeve 201 and the second annular sleeve 202 are both fixedly installed on the outer wall of the dust suction pipe 2. Several spiral guide ridges 203 are provided. The several spiral guide ridges 203 are distributed in an annular shape at equal intervals and fixed on the inner wall of the dust suction pipe 2, forming a spiral guide structure embedded in the pipe wall.

[0035] By setting a spiral guide ridge 203 on the inner wall of the dust suction pipe 2, the dust-laden gas flowing through it can generate a rotating turbulent flow, thereby allowing the hot airflow in the middle to fully mix with the cooler airflow near the pipe wall, and at the same time exchange heat with the entire heated pipe wall, so that the gas is heated more evenly, which can enhance heat transfer, prevent gas stratification and local supercooling; and prevent moisture from condensing on the pipe wall, avoiding the caking phenomenon caused by condensation.

[0036] Furthermore, the first annular sleeve 201 is connected to the gas flow channel of the spiral guide ridge 203, and the spiral guide ridge 203 is connected to the gas flow channel of the second annular sleeve 202, forming a continuous heating circuit around the dust suction pipe 2. The gas flow channel of the first annular sleeve 201 is connected to the pressurized jetting mechanism 7 for introducing high-temperature and high-pressure gas.

[0037] Through this technical solution, when the high-temperature gas from the booster jetting mechanism 7 flows through this continuous heating circuit, it can transfer its heat through the pipe wall to the dust-laden gas passing through the central flow channel of the dust suction pipe 2, thereby heating the dust suction pipe 2 and the dust-laden airflow, and raising its temperature above the dew point, thus preventing the intake air from condensing and condensing in the pipe.

[0038] In a preferred embodiment of this application, see [reference] Figure 4 As shown, the backflushing assembly 6 includes an annular pipe 601, backflushing nozzles 602 and air blowing pipe 603. The annular pipe 601 is fixedly installed on the inner wall of the dust collection chamber 101. Several backflushing nozzles 602 are fixedly installed on the annular pipe 601 for spraying high-pressure airflow vertically or at a certain angle onto the dust collection bag 106.

[0039] One end of an air blowing pipe 603 is fixedly connected to one side of the annular pipe 601, and the other end of the air blowing pipe 603 extends into the gas flow channel of the second annular sleeve 202 and is fixedly connected to the second annular sleeve 202 to form a gas passage.

[0040] With this technical solution, after the high-temperature and high-pressure gas flows through the preheating structure of the dust suction pipe 2 and completes the heat exchange, it can continue to enter the annular pipe 601 through the air blowing pipe 603, and then be sprayed out at high speed from each backflushing nozzle 602 to backflush the filter bag. At the same time, the filter bag shakes, which plays the role of using the residual heat gas for pulse backflushing and dust removal.

[0041] In one specific embodiment of this application, see [reference]. Figure 8 , Figure 9 and Figure 10 As shown, the booster jetting mechanism 7 includes a fixed cylinder 701, a movable piston 702, and a pulse booster unit; The fixed cylinder 701 is fixedly installed on the side wall of the heat preservation chamber 401. A movable piston 702 is slidably connected in the inner cavity of the fixed cylinder 701. One end of the piston guide rod 703 is fixedly connected to the upper surface of the movable piston 702. The other end of the piston guide rod 703 passes through the upper wall of the inner cavity of the fixed cylinder 701 and extends to the outside of the wall. The upper end of the piston guide rod 703 is connected to a pulse booster unit, which is used to drive the moving piston 702 to reciprocate, thereby periodically compressing the gas.

[0042] Further, see Figure 10 As shown, the pulse boosting part of the boosting jet mechanism 7 includes a boosting spring 705, a contact plate 704, a rotating seat 707, and a contact roller 709.

[0043] A contact plate 704 is fixedly connected to the upper end of the piston guide rod 703, and a fixed guide rod 706 is also fixedly connected to the side wall of the heat preservation chamber 401. The fixed guide rod 706 passes through the contact plate 704 and slides with the contact plate 704 to guide and limit the movement direction of the contact plate 704.

[0044] One end of a pressure spring 705 is fixedly connected to the bottom surface of the contact plate 704, and the other end of the pressure spring 705 is fixedly connected to the upper surface of the fixed cylinder 701, which is used to provide an elastic force to reset the contact plate 704 after it moves down.

[0045] The rotating round seat 707 is disposed on the side wall of the heat preservation chamber 401 and is rotatably connected to the heat preservation chamber 401. The rotating round seat 707 is located on the side of the contact plate 704. Several support arms 708 are fixedly connected to the arc-shaped wall of the rotating round seat 707. One end of the support arm 708 is rotatably connected to a contact roller 709. The contact roller 709 is used to contact the bottom surface of the contact plate 704 and push it to move upward.

[0046] A motor bracket 711 is also fixedly connected to the side wall of the heat preservation chamber 401. A drive motor 714 is fixedly installed on the motor bracket 711, and a second transmission wheel 712 is fixedly connected to the end of the output shaft of the drive motor 714.

[0047] A first transmission wheel 710 is coaxially fixedly connected to one side of the rotating round seat 707, and a transmission belt 713 is sleeved between the first transmission wheel 710 and the second transmission wheel 712.

[0048] With this technical solution, when the drive motor 714 is working, it can drive the second transmission wheel 712 to rotate, thereby driving the first transmission wheel 710 to rotate synchronously with the rotating round seat 707 through the transmission belt 713, and the support arm 708 on the rotating round seat 707 rotates accordingly.

[0049] When the contact roller 709 at the end of the support arm 708 moves to contact the bottom surface of the contact plate 704, it pushes the contact plate 704 upward, causing the pressure spring 705 to stretch and accumulate elastic potential energy. At the same time, the contact plate 704 drives the moving piston 702 to move upward in the inner cavity of the fixed cylinder 701 through the piston guide rod 703. After the contact roller 709 passes the highest point, under the restoring force of the pressure spring 705, the moving piston 702 quickly moves downward to compress the gas in the cylinder, which plays the role of periodically generating high-pressure pulse airflow. Meanwhile, as the gas is rapidly compressed within the fixed cylinder 701, its internal energy increases, which also raises the gas temperature. This allows for the transfer of more heat when the intake air is subsequently heated by the preheating structure, resulting in a better anti-condensation effect.

[0050] As a preferred technical solution, please refer to Figure 12 As shown, in order to facilitate the adjustment of the back-blowing pressure according to the actual working conditions, the effective rotation radius of the rotating seat 707 can be changed by adjusting the length of the support arm 708.

[0051] The support arm 708 includes a fixed arm 7081 and a movable arm 7082. The movable arm 7082 is slidably connected in the inner cavity of the fixed arm 7081. A fixed block 7083 is fixedly connected in the inner cavity of the movable arm 7082. An adjusting screw 7084 is rotatably connected in the inner cavity of the fixed arm 7081. The adjusting screw 7084 passes through the fixed block 7083 and is threadedly engaged with the fixed block 7083.

[0052] A rotating rod 7086 is rotatably connected in the inner cavity of the rotating seat 707. One end of the rotating rod 7086 is fixedly connected to an adjusting knob 7085. The rotating rod 7086 and the adjusting screw 7084 are connected by a bevel gear pair.

[0053] With this technical solution, when it is necessary to adjust the length of the support arm 708, the adjustment knob 7085 can be rotated, which in turn drives the rotating rod 7086 to rotate. This drives the adjustment screw 7084 to rotate through the bevel gear pair, causing the fixed block 7083, which is threadedly engaged with the adjustment screw 7084, to extend or retract the moving arm 7082 relative to the fixed arm 7081. By changing the total length of the support arm 708, the radius of motion of the contact roller 709 can be changed, thereby changing its lifting amplitude on the contact plate 704 and the stroke of the moving piston 702, thus realizing the adjustment of the gas compression ratio and the final backflush pressure.

[0054] Furthermore, see Figure 9As shown, a gas intake pipe 715 and a gas output pipe 716 are fixedly connected to the bottom side of the inner cavity of the fixed cylinder 701. One end of the gas intake pipe 715 extends into the inner cavity of the telescopic air storage bag 402, and one end of the gas output pipe 716 extends into the gas flow channel of the first annular sleeve 201 and is fixedly connected to the first annular sleeve 201.

[0055] Both the air blowing output pipe 716 and the gas intake pipe 715 are equipped with check valves to control the unidirectional flow of gas. Specifically, the check valve on the gas intake pipe 715 only allows gas to flow from the telescopic air reservoir 402 into the fixed cylinder 701, while the check valve on the air blowing output pipe 716 only allows gas to flow from the fixed cylinder 701 out to the first annular sleeve 201.

[0056] In a preferred embodiment of this application, see [reference] Figure 8 and Figure 11 As shown, it also includes an auxiliary vibration mechanism 8, which includes a guide sleeve 806, a vibration slider 807, and a linkage vibration unit; The guide sleeve 806 is fixedly installed in the inner cavity of the dust collection chamber 101. A vibration slider 807 is slidably connected in the inner cavity of the guide sleeve 806 to form a sliding pair. The vibration slider 807 is fixedly connected to the frame 105 to form an overall structure that can transmit vibration to the frame 105 and the dust collection bag 106. The vibration slider 807 is connected to a linkage vibration part to drive it to perform periodic vibration.

[0057] The linkage vibration part of the auxiliary vibration mechanism 8 includes a spring 808, a vibration guide rod 809, a connecting plate 810, a rotating disk 804, a protrusion 805, a first linkage wheel 801, and a second linkage wheel 802.

[0058] One end of a spring 808 is fixedly connected to one side of the vibration slider 807, and the other end of the spring 808 is fixedly connected to the inner wall of the guide sleeve 806.

[0059] One end of a vibrating guide rod 809 is fixedly connected to the other side of the vibrating slider 807. The other end of the vibrating guide rod 809 penetrates the inner wall of the dust collection chamber 101 and extends to the outside of the wall. The dust collection chamber 101 and the vibrating guide rod 809 are in sliding fit. One end of the vibrating guide rod 809 is fixedly connected to a connecting plate 810. A contact protrusion 811 is fixedly connected to the side wall of the connecting plate 810. A rotating disk 804 is rotatably connected to the side wall of the dust collection chamber 101. Several protrusions 805 are fixedly connected to the side wall of the rotating disk 804. The protrusions 805 are evenly distributed in a circle and are used to periodically contact the contact protrusions 811 and lift the connecting plate 810 during the rotation process. The side wall of the dust collection chamber 101 is rotatably connected to a second linkage wheel 802, which is connected to the rotating disk 804 via a transmission connection, for example, through a bevel gear set.

[0060] The first linkage wheel 801 is coaxially and fixedly connected to the rotating round seat 707 to form a synchronous rotation relationship. A linkage belt 803 is sleeved between the first linkage wheel 801 and the second linkage wheel 802.

[0061] With this technical solution, when the rotating seat 707 rotates under the drive of the drive motor 714, it can synchronously drive the first linkage wheel 801 to rotate, thereby driving the second linkage wheel 802 to rotate synchronously with the rotating disk 804 through the linkage belt 803. During the rotation, the protrusion 805 on the rotating disk 804 will periodically contact and push against the contact protrusion 811, thereby causing the connecting plate 810, the vibration guide rod 809 and the vibration slider 807 to move against the elastic force of the spring 808. After the protrusion 805 has rotated, the vibration slider 807 will quickly return to its original position under the action of the spring 808, thereby generating periodic vibration. This vibration is transmitted to the frame 105 and the dust collector bag 106 through the vibration slider 807, which plays a role in mechanically assisting the dust collector bag 106 to promote dust removal while performing back-blowing cleaning.

[0062] A method for using a dust removal device for calcium hydroxide product production includes the following steps: A. Start the Roots blower 3 to create a negative pressure in the dust collection chamber 101, and draw the gas containing calcium hydroxide dust from the production process into the dust collection chamber 101 through the dust suction pipe 2; B. The dust-laden gas passes through the dust collection bag 106 from bottom to top in the dust collection chamber 101. The dust is intercepted, and the purified gas gathers upward and is discharged from the clean gas output end 102. After passing through the Roots blower 3, it is transported to the telescopic air storage bladder 402 in the clean gas storage mechanism 4 for temporary storage and heat preservation. C. Start the drive motor 714 to drive the rotating round seat 707 to rotate, and periodically lift the contact plate 704 through the contact roller 709 at the end of its support arm 708, so that the moving piston 702 reciprocates in the fixed cylinder 701. D. During the upward stroke of the moving piston 702, heat-insulated clean air is drawn in from the telescopic air reservoir 402 through the gas intake pipe 715; during the stroke in which it is driven by the spring 705 to move downward quickly, the gas in the fixed cylinder 701 is compressed to generate a high-temperature and high-pressure airflow, which is then output through the air blow-out pipe 716. E. The high-temperature and high-pressure pulsed airflow generated in step D first enters the preheating structure of the dust suction pipe 2 and flows through the continuous heating circuit composed of the first annular sleeve 201, the spiral guide ridge 203 and the second annular sleeve 202. During this process, its heat is transferred through the pipe wall to the dust-laden gas flowing in the central channel of the dust suction pipe 2, preheating it and raising its temperature above the dew point. F. After heat exchange is completed, the gas continues to flow out from the preheating structure, enters the annular pipe 601 of the backflushing assembly 6 through the air blowing pipe 603, and is sprayed at high speed into the dust collector bag 106 through each backflushing nozzle 602 to backflush and clean it. G. While the rotating round seat 707 is rotating, the rotating disk 804 is synchronously driven to rotate through the transmission of the first linkage wheel 801, the linkage belt 803 and the second linkage wheel 802, so that the protrusion 805 on it periodically contacts the connecting plate 810 of the auxiliary vibration mechanism 8, and then drives the frame 105 and the dust collector bag 106 to generate periodic mechanical vibration through the vibration guide rod 809 and the vibration slider 807, which helps to remove dust. H. The removed dust falls into the bottom of the dust collection chamber 101 and is discharged and collected through the dust discharge port 104, completing one working cycle; the device achieves continuous filtration and dust removal by continuously or intermittently executing steps C to G.

[0063] The circuits, electronic components, and modules involved are all existing technologies, and can be fully implemented by those skilled in the art.

[0064] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dust removal device for calcium hydroxide production, characterized in that: include: Dust removal assembly (1), the dust removal assembly (1) includes a dust removal chamber (101) and a dust removal bag (106); The upper end of the dust removal chamber (101) is provided with a clean air output end (102), which is connected to the Roots blower (3); Clean gas storage mechanism (4) is used to temporarily store and buffer the clean gas delivered by the Roots blower (3). A pressurizing jet mechanism (7) is fixedly connected to one side of the clean gas storage mechanism (4). The dust removal chamber (101) is provided with a dust-laden gas input end (103) on one side, and a dust suction pipe (2) is fixedly connected to one end of the dust-laden gas input end (103). A preheating structure is provided inside the dust suction pipe (2). The dust removal chamber (101) is equipped with a backflush assembly (6), which is connected to the pressurized jetting mechanism (7) through the preheating structure of the dust suction pipe (2).

2. The dust removal device for calcium hydroxide product production according to claim 1, characterized in that: The clean gas storage mechanism (4) includes an insulated chamber (401) and a telescopic air storage bag (402). The telescopic air storage bag (402) is fixedly connected in the inner cavity of the insulated chamber (401). The telescopic air storage bag (402) is used to store the clean gas delivered by the Roots blower (3).

3. The dust removal device for calcium hydroxide product production according to claim 1, characterized in that: The dust collection chamber (101) has a frame (105) in its inner cavity. A dust collection bag (106) is fixedly connected to the inner wall of the frame (105) to form a filter body. The dust collection bag (106) is used to intercept dust particles in the gas.

4. The dust removal device for calcium hydroxide product production according to claim 1, characterized in that: The preheating structure of the dust suction pipe (2) includes a first annular sleeve (201), a second annular sleeve (202), and a spiral guide ridge (203); gas flow channels are provided inside the first annular sleeve (201), the second annular sleeve (202), and the spiral guide ridge (203); The first annular sleeve (201) and the second annular sleeve (202) are both fixedly installed on the outer wall of the dust suction pipe (2). Several spiral guide ridges (203) are provided. Several spiral guide ridges (203) are distributed in an annular shape at equal intervals and fixed on the inner wall of the dust suction pipe (2) to form a spiral guide structure embedded in the pipe wall.

5. The dust removal device for calcium hydroxide product production according to claim 4, characterized in that: The first annular sleeve (201) is connected to the gas flow channel of the spiral guide ridge (203), and the spiral guide ridge (203) is connected to the gas flow channel of the second annular sleeve (202), forming a continuous heating circuit around the dust suction pipe (2). The gas flow channel of the first annular sleeve (201) is connected to the pressurized jetting mechanism (7).

6. The dust removal device for calcium hydroxide product production according to claim 5, characterized in that: The backflushing assembly (6) includes an annular pipe (601), backflushing nozzles (602) and air blowing pipe (603). The annular pipe (601) is fixedly installed on the inner wall of the dust removal chamber (101), and a plurality of backflushing nozzles (602) are fixedly installed on the annular pipe (601). One end of an air blowing pipe (603) is fixedly connected to one side of the annular pipe (601), and the other end of the air blowing pipe (603) extends into the gas flow channel of the second annular sleeve (202) and is fixedly connected to the second annular sleeve (202) to form a gas passage.

7. The dust removal device for calcium hydroxide product production according to claim 2, characterized in that: The pressurized jetting mechanism (7) includes a fixed cylinder (701), a movable piston (702), and a pulse pressurization unit; A movable piston (702) is slidably connected in the inner cavity of the fixed cylinder (701), and a piston guide rod (703) is fixedly connected to the upper surface of the movable piston (702). The upper end of the piston guide rod (703) is connected to a pulse booster unit, which is used to drive the moving piston (702) to reciprocate, thereby periodically compressing the gas.

8. The dust removal device for calcium hydroxide product production according to claim 7, characterized in that: The pulse boosting part of the boosting jet mechanism (7) includes a boosting spring (705), a contact plate (704), a rotating seat (707), and a contact roller (709). The upper end of the piston guide rod (703) is fixedly connected to a contact plate (704). One end of a pressure spring (705) is fixedly connected to the bottom surface of the contact plate (704), and the other end of the pressure spring (705) is fixedly connected to the upper surface of the fixed cylinder (701). The rotating round seat (707) is disposed on the side wall of the heat preservation chamber (401) and is rotatably connected to the heat preservation chamber (401). The rotating round seat (707) is located on the side of the contact plate (704). Several support arms (708) are fixedly connected to the arc-shaped wall of the rotating round seat (707). One end of the support arm (708) is rotatably connected to a contact roller (709). The contact roller (709) is used to contact the bottom surface of the contact plate (704) and push it to move upward. A motor bracket (711) is also fixedly connected to the side wall of the heat preservation chamber (401). A drive motor (714) is fixedly installed on the motor bracket (711), and a second transmission wheel (712) is fixedly connected to the end of the output shaft of the drive motor (714). A first transmission wheel (710) is coaxially fixedly connected to one side of the rotating round seat (707), and a transmission belt (713) is sleeved between the first transmission wheel (710) and the second transmission wheel (712).

9. The dust removal device for calcium hydroxide product production according to claim 8, characterized in that: It also includes an auxiliary vibration mechanism (8), which includes a guide sleeve (806), a vibration slider (807), and a linkage vibration unit; The guide sleeve (806) is fixedly installed in the inner cavity of the dust removal chamber (101), and a vibration slider (807) is slidably connected in the inner cavity of the guide sleeve (806). The vibration slider (807) is fixedly connected to the frame (105). The linkage vibration part of the auxiliary vibration mechanism (8) includes a spring (808), a vibration guide rod (809), a connecting plate (810), a rotating disk (804), a protrusion (805), a first linkage wheel (801), and a second linkage wheel (802). One end of a spring (808) is fixedly connected to one side of the vibration slider (807), and the other end of the spring (808) is fixedly connected to the inner wall of the guide sleeve (806). The other side of the vibration slider (807) is fixedly connected to one end of the vibration guide rod (809). The other end of the vibration guide rod (809) penetrates the inner wall of the dust removal chamber (101) and extends to the outside of the wall. One end of the vibration guide rod (809) is fixedly connected to a connecting plate (810). The side wall of the connecting plate (810) is fixedly connected to a contact protrusion (811). A rotating disk (804) is rotatably connected to the side wall of the dust removal chamber (101). A number of protrusions (805) are fixedly connected to the side wall of the rotating disk (804). The protrusions (805) are evenly distributed in a circle and are used to periodically contact the contact protrusions (811) and lift the connecting plate (810) during rotation.

10. The dust removal device for calcium hydroxide product production according to any one of claims 1-9, wherein a method of using the dust removal device for calcium hydroxide product production is provided, characterized in that: The method of using the dust removal device for calcium hydroxide product production includes the following steps: A. Start the Roots blower (3) to create a negative pressure in the dust collection chamber (101) and draw the gas containing calcium hydroxide dust from the production process into the dust collection chamber (101) through the dust suction pipe (2); B. The dust-laden gas passes through the dust collection bag (106) from bottom to top in the dust collection chamber (101). The dust is trapped, and the purified gas gathers upward and is discharged from the clean gas output end (102). After passing through the Roots blower (3), it is transported to the telescopic air storage bag (402) in the clean gas temporary storage mechanism (4) for temporary storage and heat preservation. C. Start the drive motor (714) to drive the rotating round seat (707) to rotate, and periodically lift the contact plate (704) through the contact roller (709) at the end of its support arm (708), so that the moving piston (702) reciprocates in the fixed cylinder (701); D. During the upward stroke of the moving piston (702), heat-insulating clean air is drawn in from the telescopic air reservoir (402) through the gas intake pipe (715); during the stroke in which it is driven by the spring (705) to move downward quickly, the gas in the fixed cylinder (701) is compressed to generate a high-temperature and high-pressure airflow, which is then output through the air blow-out pipe (716). E. The high-temperature and high-pressure pulsed airflow generated in step D first enters the preheating structure of the dust suction pipe (2), flows through the continuous heating circuit composed of the first annular sleeve (201), the spiral guide ridge (203) and the second annular sleeve (202). During this process, its heat is transferred through the pipe wall to the dust-laden gas flowing in the central channel of the dust suction pipe (2), preheating it and raising its temperature above the dew point. F. After heat exchange is completed, the gas continues to flow out from the preheating structure, enters the annular pipe (601) of the backflushing assembly (6) through the air blowing pipe (603), and is sprayed at high speed into the dust collector bag (106) through each backflushing nozzle (602) for backflushing and cleaning. G. While the rotating round seat (707) rotates, the rotating disk (804) is driven to rotate synchronously through the transmission of the first linkage wheel (801), the linkage belt (803) and the second linkage wheel (802), so that the protrusion (805) on it periodically contacts the connecting plate (810) of the auxiliary vibration mechanism (8), and then drives the frame (105) and the dust collector bag (106) to generate periodic mechanical vibration through the vibration guide rod (809) and the vibration slider (807), which assists in the removal of dust. H. The removed dust falls into the bottom of the dust collection chamber (101) and is discharged and collected through the dust discharge port (104), completing one working cycle; the device achieves continuous filtration and dust removal by continuously or intermittently executing steps C to G.

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