Calcium hydroxide production plant

Abstract

The application provides a calcium hydroxide production device, and relates to the technical field of calcium hydroxide production.The calcium hydroxide production device comprises a digestion mechanism, the top end of the digestion mechanism is connected with a fan, the output end of the fan is connected with an air duct, the air duct is connected with a dust removal device, the dust removal device comprises a dust removal tank which is connected with the air duct, the input end of the dust removal tank is connected with an external water supply device, a booster assembly is coaxially arranged in the dust removal tank, the booster assembly comprises a booster pipe which is connected to the top of the dust removal tank, and a guide piece is axially and slidingly connected in the booster pipe; the diameter of the top end of the booster pipe is larger than the diameter of the bottom end; the first guide piece and the second guide piece are spirally arranged; the dust-containing steam generated in the digestion mechanism is pressurized and sent to the dust removal tank by the fan, and the dust-containing steam is further pressurized by the booster pipe, so that the hardening phenomenon of the dust in the airflow on the inner walls of the air duct and the booster pipe is reduced.

Description

Technical Field

[0001] This application relates to the field of calcium hydroxide production technology, and more specifically, to a calcium hydroxide production equipment. Background Technology

[0002] Calcium hydroxide is a white powdery solid, commonly known as slaked lime or quicklime. Its aqueous solution is called limewater. Calcium hydroxide has a wide range of applications in industry.

[0003] Dry process is the most common way to produce calcium hydroxide. In this process, qualified quicklime is crushed to about 40mm and sent to a storage tank. The lime in the silo is fed into a primary lime slaker mixer via a constant flow screw conveyor or a quantitative weighing system. Under the strong stirring of the stirring rod, it is initially digested and then enters a secondary lime slaker mixer to complete the digestion process. The digested lime is then sent to a powder separator by a semi-finished product screw conveyor to obtain qualified refined lime.

[0004] During the digestion process, quicklime and water undergo a digestion reaction under high-intensity stirring of the agitator blades, which generates a large amount of steam containing dust. Existing dust removal methods mostly use water dust removal. However, in actual dust removal, due to the characteristics of quicklime, it will calcify when it comes into contact with carbon dioxide in the air, which will lead to caking on the inner wall of the dust collector and dust removal pipe, affecting the normal use of the dust collector. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a calcium hydroxide production apparatus, comprising a digestion mechanism for reacting quicklime with slaked lime, a fan connected to the top of the digestion mechanism, an exhaust pipe connected to the output end of the fan, and a dust removal device connected to the exhaust pipe, further comprising:

[0006] The dust removal equipment includes a dust removal tank connected to the exhaust pipe. The input end of the dust removal tank is connected to an external water supply device, and the output end of the dust removal tank is connected to an external water pump. The output end of the water pump is used to supply water to the digestion mechanism.

[0007] The dust collection tank is coaxially equipped with a pressurization component, which includes a pressurization pipe connected to the top of the dust collection tank, and a guide is axially slidably connected inside the pressurization pipe;

[0008] The booster pipe and the exhaust pipe are connected, and the top diameter of the booster pipe is larger than its bottom diameter;

[0009] The guide includes a first guide plate and a second guide plate arranged symmetrically. The first guide plate and the second guide plate are spirally arranged and slide in contact with the inner wall of the booster tube, respectively. The first guide plate and the second guide plate do not extend out of the booster tube.

[0010] In addition, a calcium hydroxide production apparatus according to an embodiment of this application also has the following additional technical features:

[0011] In some specific embodiments of this application, the digestion mechanism is provided with a feeding port for supplying quicklime into the digestion mechanism;

[0012] The digestion mechanism is connected to a gas collection hood at its top, which is used to collect dust-laden vapor generated during the digestion reaction.

[0013] In some specific embodiments of this application, the air inlet of the fan is connected to the output end of the air collection hood, and the exhaust end of the fan is connected to the input end of the air duct.

[0014] In some specific embodiments of this application, the top of the dust collector is connected to a water inlet pipe that is connected to an external water supply device, and an air outlet pipe;

[0015] The bottom of the dust collection tank is connected to a drain pipe.

[0016] In some specific embodiments of this application, the booster pipe includes a top straight section, a middle variable diameter section, and a bottom straight section. The top straight section is connected to the output end of the exhaust pipe, the middle variable diameter section is connected to the top straight section, and the bottom straight section is connected to the middle variable diameter section.

[0017] The diameter of the top straight section is larger than the diameter of the bottom straight section.

[0018] In some specific embodiments of this application, the first guide plate and the second guide plate have the same structural size, and the top ends of the first guide plate and the second guide plate are connected to a top limiting ring, and the top limiting ring is axially slidingly engaged with the inner wall of the top straight cylindrical section.

[0019] In some specific embodiments of this application, the end of the top limiting ring away from the first guide plate and the second guide plate is arranged with a slope inclined towards the center.

[0020] In some specific embodiments of this application, the first guide plate and the second guide plate are arranged in a radially gradually changing spiral.

[0021] In some specific embodiments of this application, the sidewalls of the first guide plate and the second guide plate are axially engaged with the inner wall of the central variable diameter section, respectively.

[0022] In some specific embodiments of this application, the bottom ends of the first guide plate and the second guide plate are connected to a bottom connecting plate.

[0023] In some specific embodiments of this application, a partition is sleeved on the outer wall of the booster pipe, the partition is clearance-fitted with the inner wall of the dust collector, a sealing assembly is connected to the bottom connecting plate, and the sealing assembly is sealed and inserted into the bottom straight section.

[0024] The sealing assembly includes a telescopic member fixed to the bottom connecting plate, and a passive rotating member rotatably connected to the telescopic member;

[0025] The passive rotating component and the bottom straight section are elastically sealed and plugged in.

[0026] In some specific embodiments of this application, the partition plate is uniformly provided with a plurality of turbulence holes.

[0027] In some specific embodiments of this application, the telescopic member includes a slide cylinder fixed to the center of the bottom connecting plate, a slide rod slidably inserted into the slide cylinder, and a spring sleeved on one end of the slide rod inserted into the slide cylinder.

[0028] In some specific embodiments of this application, the inner wall of the slide cylinder is symmetrically provided with limiting grooves along the axial direction, and the end of the slide rod inserted into the slide cylinder is symmetrically provided with limiting blocks, and the limiting blocks and the limiting grooves are slidably engaged.

[0029] In some specific embodiments of this application, the passive rotating member is rotatably connected to one end of the slide rod extending out of the slide cylinder, and the side wall of the passive rotating member and the inner wall of the bottom straight cylinder section are in a sealing sliding fit.

[0030] In some specific embodiments of this application, a dissipation component is fixedly connected to the bottom side of the passive rotating member;

[0031] The evacuation assembly includes an evacuation shroud slidably fitted onto the booster pipe, the evacuation shroud being conical in shape with its open end facing upwards;

[0032] A connecting rod is fixedly connected to the bottom circumference of the evacuation hood, and the other end of the connecting rod is fixedly connected to the passive rotating component.

[0033] In some specific embodiments of this application, the evacuation shroud is provided with a plurality of through holes evenly distributed around its circumference.

[0034] The beneficial effects of a calcium hydroxide production apparatus according to an embodiment of this application are:

[0035] 1. The airflow in the exhaust duct is pressurized by a fan, and the dust-laden steam generated in the digestion unit is pressurized and transported to the dust collection tank. The dust-laden steam is further pressurized by a pressure boosting pipe with a variable diameter, so as to further increase its flow rate and reduce the caking phenomenon of dust in the airflow on the inner wall of the exhaust duct and the pressure boosting pipe.

[0036] 2. The increased airflow forms a spiral airflow when passing through the guide, which enhances the impact of the airflow on the inner wall of the booster pipe and reduces the formation of caking on the inner wall of the booster pipe;

[0037] 3. The two guide vanes can further enhance the pressure and velocity of the airflow by reducing the cross-sectional area of ​​the channel, so that the pressure of the airflow gradually increases in the pressurization pipe, and then the airflow can smoothly enter the liquid in the dust removal tank, and the liquid is used to remove dust from the airflow.

[0038] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the overall structure of a calcium hydroxide production equipment according to an embodiment of this application;

[0041] Figure 2 This is a partial structural cross-sectional view of a calcium hydroxide production equipment according to an embodiment of this application;

[0042] Figure 3 This is a schematic diagram of the internal structure of the dust collector according to an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the internal structure of the booster assembly according to an embodiment of this application;

[0044] Figure 5 This is a schematic diagram of the structure of the guide component according to an embodiment of this application;

[0045] Figure 6 This is a schematic diagram showing the location of the sealing component according to an embodiment of this application, and an enlarged schematic diagram showing its structure.

[0046] Figure 7 This is a partial structural schematic diagram of the sealing component according to an embodiment of this application;

[0047] Figure 8 This is a schematic diagram showing the location of the escaping component according to an embodiment of this application;

[0048] Figure 9 This is a partial structural schematic diagram of the evaporation component according to an embodiment of this application.

[0049] Icons: 1. Digestion mechanism; 11. Feeding port; 12. Gas collection hood; 2. Fan; 3. Exhaust pipe; 4. Dust collector; 41. Water inlet pipe; 42. Drain pipe; 43. Air outlet pipe; 5. Pressurization assembly; 51. Pressurization pipe; 511. Top straight section; 512. Middle diameter changing section; 513. Bottom straight section; 52. Guide component; 521. First guide plate; 522. Second guide plate; 523. Top limiting ring; 524. Bottom connecting plate; 6. Partition; 61. Turbulence hole; 7. Sealing assembly; 71. Telescopic component; 711. Slide cylinder; 712. Slide rod; 713. Spring; 714. Limiting groove; 715. Limiting block; 72. Passive rotating component; 8. Emission assembly; 81. Emission hood; 811. Through hole; 82. Connecting rod. Detailed Implementation

[0050] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] like Figures 1-9 As shown, a calcium hydroxide production device according to an embodiment of this application includes a digestion unit 1 for reacting quicklime with slaked lime. A fan 2 is connected to the top of the digestion unit 1, and an exhaust pipe 3 is connected to the output end of the fan 2. The fan 2 is used to accelerate the discharge of a large amount of dust-laden steam generated inside the digestion unit 1 due to the digestion reaction to the exhaust pipe 3. The exhaust pipe 3 is connected to a dust removal device, so that the large amount of dust-laden steam will be guided into the dust removal tank 4 for dust removal.

[0053] It should be noted that the digestion mechanism 1 in this application embodiment is a digester (digester) in the prior art, used to react quicklime and water to prepare slaked lime from quicklime. The specific preparation process will not be described in detail here.

[0054] In this embodiment of the application, the dust removal equipment includes a dust removal tank 4 connected to the exhaust pipe 3. Specifically, the dust removal tank 4 can be set on one side of the digestion mechanism 1 by a bracket. The input end of the dust removal tank 4 is connected to an external water supply device for injecting water into the interior of the dust removal tank 4. The output end of the dust removal tank 4 is connected to an external water pump, and the output end of the water pump is used to supply water to the digestion mechanism 1 so as to meet the requirement of the digestion mechanism 1 to prepare quicklime from quicklime.

[0055] Specifically, such as Figure 2 and Figure 3 As shown, a pressurization assembly 5 is coaxially arranged inside the dust collector 4. The pressurization assembly 5 includes a pressurization pipe 51 connected to the top of the dust collector 4. A guide 52 is axially slidably connected inside the pressurization pipe 51.

[0056] The booster pipe 51 is connected to the exhaust pipe 3. The diameter of the top end of the booster pipe 51 is larger than the diameter of its bottom end. It can be understood that the air inlet end of the booster pipe 51 is larger than the air outlet end. In this way, the airflow will gradually increase in pressure as it passes through the booster pipe 51.

[0057] like Figure 4 and Figure 5 As shown, the guide member 52 includes a first guide piece 521 and a second guide piece 522 arranged symmetrically. The first guide piece 521 and the second guide piece 522 are spirally arranged, and the first guide piece 521 and the second guide piece 522 are respectively slidably engaged with the inner wall of the booster tube 51, and the first guide piece 521 and the second guide piece 522 do not extend out of the booster tube 51.

[0058] Understandably, the airflow accelerated and guided by the fan 2 will be pressurized by the gradually decreasing diameter of the pressurization pipe 51 when it passes through the pressurization pipe 51, thus increasing its flow velocity. The first guide plate 521 and the second guide plate 522 are spirally arranged inside the pressurization pipe 51. First, the pipe diameter will be further reduced. At this time, the airflow will continue to be pressurized under the output of the fan 2 due to the further reduction in pipe diameter, thus further increasing its flow velocity. The guide 52 is spirally arranged, and the airflow will form a spiral airflow when it passes through the two guide plates. The spiral airflow will increase the impact force between itself, the inner wall of the pressurization pipe 51, and the guide 52 itself. In this way, the strong impact force can reduce the caking phenomenon on the pipe wall of the pressurization pipe 51 and the guide 52 itself.

[0059] In addition, a calcium hydroxide production apparatus according to an embodiment of this application also has the following additional technical features:

[0060] The digestion mechanism 1 is equipped with a feeding port 11 for supplying quicklime into the digestion mechanism 1.

[0061] The digestive mechanism 1 is connected to a gas collection hood 12 at its top, specifically as follows: Figure 1 and Figure 2As shown, the gas collection hood 12 adopts a design where the top is smaller than the bottom, which is used to collect dust-laden steam generated during the digestion reaction. It can be understood that the dust-laden steam generated during the digestion reaction will gather in the gas collection hood 12, and due to the continuous digestion reaction inside the entire digestion mechanism 1, dust-laden steam will be continuously generated. Therefore, when the dust-laden steam enters the exhaust pipe 3 inside the gas collection hood 12, it has a certain pressure.

[0062] Furthermore, the air inlet of the fan 2 is connected to the output of the air collection hood 12, and the exhaust of the fan 2 is connected to the input of the exhaust pipe 3. Under the action of the fan 2, the dust-laden steam will be further pressurized and accelerate towards the exhaust pipe 3. The acceleration of the airflow inside the exhaust pipe 3 can, to a certain extent, cause the airflow to impact the inner wall of the exhaust pipe 3, reducing the probability that dust-laden steam might form dust-laden condensate and adhere to the inner wall of the exhaust pipe 3. This reduces the probability that quicklime will calcify on the inner wall of the exhaust pipe 3 due to carbon dioxide in the air, thus reducing the probability of hardening on the inner wall of the exhaust pipe 3.

[0063] Furthermore, the top of the dust collection tank 4 is connected to a water inlet pipe 41 that connects to an external water supply device, and an air outlet pipe 43. The bottom of the dust collection tank 4 is connected to a drain pipe 42. It is understood that dust-containing sediment will accumulate at the drain pipe 42. Thus, when the external water pump supplies water from the dust collection tank 4 to the digestion unit 1 from this point, the sediment will be transported into the digestion unit 1 along with it, realizing the recycling of wastewater after dust removal and making full use of the dust generated during the original digestion reaction.

[0064] Furthermore, the booster pipe 51 includes a top straight section 511, a middle variable diameter section 512 and a bottom straight section 513. The top straight section 511 is connected to the output end of the air duct 3, the middle variable diameter section 512 is connected to the top straight section 511, and the bottom straight section 513 is connected to the middle variable diameter section 512.

[0065] The diameter of the top straight section 511 is larger than the diameter of the bottom straight section 513.

[0066] It should be noted that the middle diameter-changing section 512 and the bottom straight section 513 adopt a double-layer design, that is, cavities are provided on the pipe walls of the middle diameter-changing section 512 and the bottom straight section 513. These cavities can reduce the transfer of water temperature inside the dust collector 4 to the middle diameter-changing section 512 and the bottom straight section 513. It can be understood that during the digestion reaction, a large amount of dust-laden steam is formed, which has a high temperature. When the water temperature inside the dust collector 4 is lower than the temperature of the dust-laden steam, the double-layer design of the middle diameter-changing section 512 and the bottom straight section 513 can form a good heat insulation effect, preventing the temperature on the pipe walls of the middle diameter-changing section 512 and the bottom straight section 513 from dropping. In this way, when the dust-laden steam airflow passes through this area, it will not form a large amount of wall-mounted water droplets, thereby further reducing the probability of caking on the pipe walls of the middle diameter-changing section 512 and the bottom straight section 513.

[0067] Furthermore, the first guide plate 521 and the second guide plate 522 are the same size. The top ends of the first guide plate 521 and the second guide plate 522 are connected to a top limiting ring 523. The top limiting ring 523 and the inner wall of the top straight section 511 are axially slidingly engaged. It can be understood that the axial sliding engagement between the top limiting ring 523 and the inner wall of the top straight section 511 prevents the first guide plate 521 and the second guide plate 522 from rotating inside the booster pipe 51, and allows them to slide axially only. This facilitates the installation and removal of the first guide plate 521 and the second guide plate 522, and consequently facilitates the subsequent cleaning and maintenance of the first guide plate 521 and the second guide plate 522.

[0068] Furthermore, the end of the top limiting ring 523 away from the first guide plate 521 and the second guide plate 522 is set with a slope inclined towards the center. It can be understood that this design can reduce the resistance generated by the airflow when passing through the top limiting ring 523, that is, avoid the airflow velocity being affected by the presence of the top limiting ring 523.

[0069] Furthermore, the first guide plate 521 and the second guide plate 522 are arranged in a radially gradually changing spiral configuration, specifically as follows: Figure 4 and Figure 5 As shown, this design firstly allows the outer walls of the first guide plate 521 and the second guide plate 522 to fit with the inner wall of the middle diameter-changing section 512. Secondly, it can guide the airflow, causing some of the airflow to form a spiral flow path. The spiral flow of air enhances the impact force on the inner wall of the middle diameter-changing section 512 and the two guide plates themselves, reducing the probability of caking at this point.

[0070] Furthermore, the sidewalls of the first guide plate 521 and the second guide plate 522 are axially slidingly engaged with the inner wall of the middle diameter-changing section 512, respectively. It can be understood that the top limiting ring 523 and the top straight section 511 slide axially, while the inner diameter of the middle diameter-changing section 512 is designed to gradually decrease. Thus, the top limiting ring 523, due to its own diameter, will not slip into the middle diameter-changing section 512. Moreover, the outer walls of the first guide plate 521 and the second guide plate 522 fit with the inner wall of the middle diameter-changing section 512, further ensuring that the top limiting ring 523 will not slip into the middle diameter-changing section 512. Thus, it can be understood that the first guide plate 521 and the second guide plate 522 form a limiting insertion relationship with the pressurizing pipe 51, and facilitate the first guide plate 521 and the second guide plate 522 to be pulled out from the pressurizing pipe 51.

[0071] Furthermore, the bottom ends of the first guide plate 521 and the second guide plate 522 are connected to a bottom connecting plate 524, which, together with the top limiting ring 523, makes the first guide plate 521 and the second guide plate 522 form a complete whole, enhancing its rigidity and preventing it from scattering under the impact of airflow.

[0072] The following describes the usage process of a calcium hydroxide production equipment according to an embodiment of this application, with reference to the accompanying drawings:

[0073] In practical application, water is injected into the dust collector 4 via an external water supply device. Preferably, the water level is below the top straight section 511 to prevent the water temperature from affecting the temperature inside the top straight section 511. Since a large amount of gas needs to be injected into the dust collector 4 during the dust removal process, the water level affects the pressure inside the dust collector 4. When quicklime is supplied to the digestion mechanism 1 through the feeding port 11, the external water pump is activated to supply the water required for the digestion reaction from the bottom of the dust collector 4 into the digestion mechanism 1. Simultaneously, the external water supply device continuously replenishes water into the dust collector 4 to maintain the water level. When the digestion reaction is underway, a large amount of dust-laden steam is generated. The blower 2 discharges the dust-laden steam collected in the gas collection hood 12 into the exhaust duct 3. Under its own pressure and the conveying action of the blower 2, the dust-laden steam forms a certain degree of high pressure and continuously passes through the exhaust duct 3. During this process, the high-pressure airflow impacts the inner wall of the exhaust duct 3, which can reduce the formation of dust-laden condensate on the inner wall of the exhaust duct 3, thus reducing the probability of caking on the inner wall of the exhaust duct 3. When the airflow enters the booster pipe 51, the pressure of the airflow is further enhanced due to the gradually narrowing diameter of the pipe section 512 in the middle. At the same time, the middle diameter section 512 is also equipped with symmetrical first guide plates 521 and second guide plates 522, and the two guide plates are arranged in a spiral. It can be understood that, firstly, the airflow channel is further... The step size decreases, and secondly, the two guide vanes in the spiral configuration will force some of the airflow to form a spiral airflow. This will further increase the pressure of the dust-laden airflow at this point (understandably, when water is injected into the dust collector 4, the water will simultaneously enter the pressurization pipe 51 located in the water, thus sealing off one end of the pressurization pipe 51 inside the dust collector 4. Meanwhile, the airflow is continuously supplied to the exhaust pipe 3 by the fan 2, causing the airflow to gradually increase in pressure inside the sealed pressurization pipe 51). This pressure will continue until it exceeds the water pressure inside the pressurization pipe 51, at which point the airflow will force the water out of the pressurization pipe 51, accelerating its discharge into the water inside the dust collector 4. Thus, after the dust-laden airflow enters the dust collector 4, its internal... The particles will be captured by the liquid and eventually settle at the bottom of the dust collector 4. The dust-collected gas will seep out of the water and be discharged through the exhaust pipe 43. It is understandable that some of the dust-laden airflow (and some will pass directly through the axis of the two guide plates) will form a spiral airflow as it passes through the first guide plate 521 and the second guide plate 522. This spiral airflow will agitate the water, further enhancing the formation of bubbles of varying sizes after entering the water, thus strengthening the water's ability to capture dust particles. Furthermore, the spiral airflow, as it passes through the first guide plate 521 and the second guide plate 522…This design will exert a multi-angle impact on the oncoming airflow surfaces of the first guide vane 521 and the second guide vane 522, as well as the pipe wall of the central diameter-changing section 512. This reduces the likelihood of caking at the impacted areas, thus extending the service life of the dust removal equipment without reducing its dust removal efficiency.

[0074] In the relevant technology, the calcium hydroxide production equipment relies solely on the impact force generated on the water body when the spiral airflow rushes out of the pressurization pipe 51. The degree of water body agitation is low, and the bubbles formed by the airflow in the water body are large and will rise to the water surface quickly. As a result, the dust removal efficiency of the dust removal tank 4 for dust-containing steam will be reduced, which will lead to a large dust content in the gas discharged from the dust removal tank 4. Furthermore, because the water body in the dust removal tank 4 will form a certain degree of blockage in the pressurization pipe 51, the moment the gas breaks through the blockage and pushes the water body out of the pressurization pipe 51, the water body in the dust removal tank 4 will shake violently, which may easily lead to the collapse of the dust removal tank 4 body.

[0075] According to some embodiments of this application, such as Figure 3 , Figure 6 and Figure 7 As shown, a baffle 6 is fitted on the outer wall of the booster pipe 51. The baffle 6 and the inner wall of the dust collector 4 are fitted with a clearance. A sealing assembly 7 is connected to the bottom connecting plate 524. The sealing assembly 7 and the bottom straight section 513 are fitted with a sealing plug.

[0076] The sealing assembly 7 includes a telescopic member 71 fixed to the bottom connecting plate 524, and a passive rotating member 72 rotatably connected to the telescopic member 71.

[0077] The passive rotating part 72 and the bottom straight section 513 are elastically sealed and plugged together.

[0078] It should be noted that the passive rotating component 72 in this embodiment can adopt existing technologies such as impellers, that is, it can rotate under the impact of airflow.

[0079] The partition 6 has multiple turbulence holes 61 evenly arranged on it.

[0080] Specifically, the telescopic component 71 includes a slide cylinder 711 fixed to the center of the bottom connecting plate 524, a slide rod 712 slidably inserted into the slide cylinder 711, and a spring 713 sleeved on one end of the slide rod 712 inserted into the slide cylinder 711.

[0081] Furthermore, the inner wall of the slide cylinder 711 is symmetrically provided with limiting grooves 714 along the axial direction, and the end of the slide rod 712 inserted into the slide cylinder 711 is symmetrically provided with limiting blocks 715. The limiting blocks 715 and the limiting grooves 714 are slidably engaged. It can be understood that the engagement of the limiting grooves 714 and the limiting blocks 715 will enable the slide cylinder 711 to play a rotational limiting role on the slide rod 712, so that the slide rod 712 can only undergo axial displacement within the slide cylinder 711.

[0082] Furthermore, the passive rotating member 72 is rotatably connected to one end of the slide rod 712 extending out of the slide cylinder 711, and the side wall of the passive rotating member 72 and the inner wall of the bottom straight cylinder section 513 are in a sealed sliding fit.

[0083] Therefore, in actual use, in the initial state, the spring force of spring 713 will cause the slide rod 712 to insert into the slide cylinder 711, which in turn causes the passive rotating part 72 to insert into the bottom straight section 513. That is, the passive rotating part 72 forms a seal at the bottom of the pressurization pipe 51, preventing external water from seeping in and preventing the temperature of the inner wall of the pressurization pipe 51 from dropping due to water seepage. This further prevents dust-laden steam from forming dust-laden condensate on the inner wall of the pressurization pipe 51 during its passage. When the gas pressure in the pressurization pipe 51 reaches a certain level, it will push the passive rotating part 72 to gradually slide out from the bottom straight section 513. That is, the slide rod 712 will gradually extend out of the slide cylinder 711 under the action of the passive rotating part 72. At the same time, the passive rotating part 72 will rotate due to the impact of the airflow. Thus, when the passive rotating part 72 slides out of the bottom straight section 513, the airflow is passively rotated. The rotation of component 72 will diffuse into the water, making the bubbles formed in the water more uniform. At the same time, the passive rotating component 72 and the airflow diffused to the periphery will enhance the turbulence of the water, which in turn will further enhance the diffusion of the gas, increasing the contact area between the dust-laden gas and the water. This will enhance the dust removal capacity of the water and reduce the dust content in the gas discharged from the dust removal tank 4. Meanwhile, when the gas rushes out of the pressurization pipe 51, it changes from rushing out along the axial direction of the pressurization pipe 51 to rushing out in all directions, reducing the violent shaking of the water and reducing the impact on the dust removal tank 4, thus improving safety. The baffle 6 fitted on the outer wall of the pressurization pipe 51 can further reduce the shaking of the water through the turbulence holes 61. At the same time, as the gas rises in the water, it must pass through the turbulence holes 61 and will be further affected by the turbulence holes 61, forcing the bubbles (gas) in the water to be further divided, thereby capturing the dust in the gas again.

[0084] In the relevant technology, when a large amount of airflow rushes into the dust removal tank 4 in this calcium hydroxide production equipment, the gas undergoing dust removal inside the dust removal tank 4 will quickly escape from the water body due to the gas pressure at the blower 2 end and the digestion mechanism 1 end, and be discharged through the air outlet pipe 43 end. The rapid outflow of airflow inside the dust removal tank 4 will reduce the ability of the water body to capture dust in the airflow to a certain extent.

[0085] According to some embodiments of this application, such as Figure 8 and Figure 9 As shown, a dissipation assembly 8 is fixedly connected to the bottom side of the passive rotating component 72;

[0086] The venting assembly 8 includes a venting hood 81 that is slidably sleeved on the pressurization pipe 51. The venting hood 81 is conical in shape, with its open end facing upward. It can be understood that after the gas is discharged from the pressurization pipe 51, it will rise in the water. After passing through the inclined surface at the bottom of the conical venting hood 81, the upward path of the airflow in the water will be extended, thereby extending the contact time between the water and the airflow and enhancing the water's dust removal capability.

[0087] A connecting rod 82 is fixedly connected to the bottom circumference of the evacuation hood 81, and the other end of the connecting rod 82 is fixedly connected to the passive rotating part 72.

[0088] The diffuser 81 has multiple through holes 811 evenly arranged around its circumference. The through holes 811 can initially divide the airflow, thereby increasing the contact area between the airflow and the water when it is at the bottom of the water body.

[0089] Therefore, in actual use, when the airflow is discharged from the bottom of the pressurization pipe 51 and drives the passive rotating component 72 to rotate, the multiple connecting rods 82 and the vent 81 fixed to the passive rotating component 72 will rotate along with it due to the rotation of the passive rotating component 72. During this process, the connecting rods 82 will have a certain agitation ability on the water. At the same time, the multiple through holes 811 on the vent 81 will also have an agitation ability on the water during the rotation.

[0090] As the airflow rises, it is obstructed by the inclined bottom of the evacuation hood 81, changing its upward path. At the same time, during the rotation, the gas is also cut by the through hole 811. This will cause the gas to be broken into smaller bubbles at the bottom of the dust collector 4, which will further enhance the dust removal capacity of the water for the dust-laden airflow. It also reduces the probability that the gas will directly form larger bubbles after entering the water and rush to the baffle 6.

[0091] It should be noted that the specific models and specifications of the digestion mechanism 1, fan 2, spring 713 and passive rotating component 72 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0092] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A calcium hydroxide production apparatus, comprising a digestion mechanism (1) for reacting quicklime with slaked lime, wherein a fan (2) is connected to the top of the digestion mechanism (1), and an exhaust pipe (3) is connected to the output end of the fan (2), the exhaust pipe (3) being connected to a dust removal device, characterized in that: The dust removal equipment includes a dust removal tank (4) connected to the exhaust pipe (3). The input end of the dust removal tank (4) is connected to an external water supply device, and the output end of the dust removal tank (4) is connected to a water pump. The output end of the water pump is used to supply water to the digestion mechanism (1). The dust collection tank (4) is coaxially provided with a pressurization component (5), the pressurization component (5) includes a pressurization pipe (51) connected to the top of the dust collection tank (4), and a guide (52) is axially slidably connected inside the pressurization pipe (51). The booster pipe (51) and the air duct (3) are connected, and the top diameter of the booster pipe (51) is larger than its bottom diameter; The guide member (52) includes a first guide piece (521) and a second guide piece (522) arranged symmetrically. The first guide piece (521) and the second guide piece (522) are spirally arranged, and the first guide piece (521) and the second guide piece (522) slide in cooperation with the inner wall of the booster tube (51), and the first guide piece (521) and the second guide piece (522) do not extend out of the booster tube (51). The booster pipe (51) includes a top straight section (511), a middle variable diameter section (512), and a bottom straight section (513). The top straight section (511) is connected to the output end of the air duct (3), the middle variable diameter section (512) is connected to the top straight section (511), and the bottom straight section (513) is connected to the middle variable diameter section (512). The diameter of the top straight section (511) is larger than the diameter of the bottom straight section (513). The bottom ends of the first guide plate (521) and the second guide plate (522) are connected to a bottom connecting plate (524). A partition plate (6) is fitted on the outer wall of the booster pipe (51). The partition plate (6) and the inner wall of the dust collector (4) are fitted with a clearance. A sealing assembly (7) is connected to the bottom connecting plate (524). The sealing assembly (7) and the bottom straight section (513) are fitted with a sealed plug. The sealing assembly (7) includes a telescopic member (71) fixed to the bottom connecting plate (524) and a passive rotating member (72) rotatably connected to the telescopic member (71). The passive rotating member (72) and the bottom straight section (513) are fitted with an elastic sealed plug. The partition (6) is provided with a plurality of turbulence holes (61) evenly distributed on it. The telescopic component (71) includes a slide cylinder (711) fixed to the center of the bottom connecting plate (524), a slide rod (712) is slidably inserted into the slide cylinder (711), and a spring (713) is sleeved on one end of the slide rod (712) inserted into the slide cylinder (711). The inner wall of the slide cylinder (711) is symmetrically provided with limiting grooves (714) along the axial direction. The end of the slide rod (712) inserted into the slide cylinder (711) is symmetrically provided with limiting blocks (715). The limiting blocks (715) and the limiting grooves (714) are in sliding cooperation. The passive rotating component (72) is rotatably connected to one end of the slide rod (712) extending out of the slide cylinder (711), and the side wall of the passive rotating component (72) and the inner wall of the bottom straight cylinder section (513) are in a sealed sliding fit.

2. The calcium hydroxide production equipment as described in claim 1, characterized in that: The digestion mechanism (1) is provided with a feeding port (11) for supplying quicklime into the digestion mechanism (1); The digestion mechanism (1) is connected to a gas collection hood (12) at its top, which is used to collect dusty vapor generated during the digestion reaction.

3. The calcium hydroxide production equipment as described in claim 2, characterized in that: The air inlet of the fan (2) is connected to the output of the air collection hood (12), and the exhaust of the fan (2) is connected to the input of the air duct (3).

4. The calcium hydroxide production equipment as described in claim 1, characterized in that: The top of the dust collector (4) is connected to a water inlet pipe (41) that is connected to an external water supply device, and an air outlet pipe (43). The bottom of the dust collection tank (4) is connected to a drain pipe (42).

5. The calcium hydroxide production equipment as described in claim 1, characterized in that: The first guide plate (521) and the second guide plate (522) have the same size. The top end of the first guide plate (521) and the second guide plate (522) are connected to a top limiting ring (523). The top limiting ring (523) and the inner wall of the top straight section (511) are axially slidingly engaged.

6. The calcium hydroxide production equipment as described in claim 5, characterized in that: The top limiting ring (523) is set with a slope inclined towards the center at the end away from the first guide plate (521) and the second guide plate (522).

7. The calcium hydroxide production equipment as described in claim 1, characterized in that: The first guide plate (521) and the second guide plate (522) are arranged in a radially gradually changing spiral.

8. The calcium hydroxide production equipment as described in claim 1, characterized in that: The sidewalls of the first guide plate (521) and the second guide plate (522) are axially slidingly fitted with the inner wall of the middle variable diameter section (512).

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