A digestion device for calcium hydroxide production

Abstract

The application discloses a digestion device for calcium hydroxide production and relates to the technical field of grinding and mixing devices.The digestion device for calcium hydroxide production comprises a lower base and an upper base;vertical digestion outer tank bodies are installed on the sides of the lower base and the upper base; a crushing and mixing inner tank is installed in the vertical digestion outer tank bodies; a servo grinding and mixing device is installed in the crushing and mixing inner tank and extends into the vertical digestion outer tank bodies; an atomizing and spraying device extending into the crushing and mixing inner tank is installed on the top of the servo grinding and mixing device; and the atomizing and spraying device is installed at the center of the top of the vertical digestion outer tank bodies.In the application, the adhesion and adsorption of calcium hydroxide raw materials on grinding parts can be avoided when the calcium hydroxide raw materials are ground, and the grinding effect of the calcium hydroxide raw materials is improved.Meanwhile, the assembly can be assembled according to requirements, the grinding and digestion device of the calcium hydroxide raw materials are carried out respectively, and the cost is lower.

Description

Technical Field

[0001] This invention relates to the field of grinding and mixing equipment technology, specifically a digestion device for calcium hydroxide production. Background Technology

[0002] In the production and processing of calcium hydroxide, the raw materials (limestone or quicklime) need to be ground to increase the reaction contact area, accelerate the subsequent calcination or digestion reaction rate, and ensure that the subsequent products are uniform and the reaction is complete. This requires the use of appropriate grinding and mixing equipment.

[0003] A calcium hydroxide solid pulverizing and grinding device, with application publication number CN113680488A, includes a base plate on which a support mechanism is connected; and a grinding mechanism connected to the support mechanism. The support mechanism includes: a support frame connected to the base plate; a grinding bowl connected to the support frame; and a support rod connected to the support frame. This invention further improves efficiency by using a rotating mechanism to rotary crush the pulverized calcium hydroxide solid.

[0004] However, this grinding and mixing device has the following drawbacks in practical use:

[0005] Existing grinding and mixing devices typically use multiple grinding blocks to grind calcium hydroxide raw materials (limestone or quicklime) within a tank. These grinding blocks rotate to grind the raw material. However, during actual grinding, powder or fragments of the material (limestone or quicklime) easily get stuck in the gaps between the teeth of the grinding blocks, creating grinding dead zones. Furthermore, the teeth on the inner wall of the grinding and mixing device (matching the grinding block structure) also adhere to and absorb some of the calcium hydroxide raw material (limestone or quicklime), affecting the grinding efficiency of these teeth.

[0006] In the preparation of calcium hydroxide, the raw material (limestone or quicklime) needs to be ground to a suitable particle size to prepare for subsequent digestion. During the digestion process, sufficient water needs to be added to the ground raw material, and the mixture is stirred and mixed in a tank to generate calcium hydroxide. Simultaneously, any lumps formed during digestion are broken up. In practice, it has been found that both the grinding of the raw material and the digestion reaction can be accomplished using a grinding structure. However, existing equipment lacks matching components, resulting in high costs in the preparation of calcium hydroxide and making it unsuitable for small to medium-sized production lines with limited space. Summary of the Invention

[0007] The purpose of this invention is to provide a digestion apparatus for calcium hydroxide production, so as to solve the problems mentioned in the background art.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0009] This invention provides a digestion device for calcium hydroxide production, comprising: a lower base and an upper base; a vertical digestion outer tank mounted on the sides of the lower and upper bases; a crushing and mixing inner tank installed inside the vertical digestion outer tank; a servo grinding and mixing device installed inside the crushing and mixing inner tank and extending into the vertical digestion outer tank; an atomizing spray device extending into the crushing and mixing inner tank and mounted on the top of the servo grinding and mixing device; the atomizing spray device being installed at the center of the top of the vertical digestion outer tank.

[0010] The servo grinding and mixing device includes: a servo drive structure mounted on the upper base and extending into the inner crushing and mixing tank; an in-tank telescopic cleaning structure connected to the servo drive structure; a centrifugal elastic grinding structure disposed inside the inner crushing and mixing tank and mounted on the outside of the servo drive structure by screws; and a scraping and screening structure installed at the bottom of the servo drive structure and located at the bottom of the inner crushing and mixing tank.

[0011] The servo drive structure is equipped with an atomizing spray device on its top.

[0012] As a preferred embodiment of the present invention, the vertical digester outer tank includes: an intermediate outer tank assembly; an upper tank assembly mounted on top of the intermediate outer tank assembly by screws; and a conical discharge lower tank assembly mounted on bottom of the intermediate outer tank assembly by screws.

[0013] The upper tank assembly is mounted on the side of the upper base; the upper base is mounted on one side of the bottom of the middle outer tank assembly; an atomizing spray device is mounted on the top of the upper tank assembly; a crushing and mixing inner tank is mounted inside the middle outer tank assembly; a scraping and screening structure is installed inside the conical discharge lower tank assembly; and a servo drive structure extending outwards is installed inside the upper tank assembly.

[0014] The inner bottom of the conical discharge tank assembly is equipped with a screening screen, and the top of the screening screen is provided with a scraping screening structure.

[0015] In a preferred embodiment of the present invention, an upper sealing cover is installed on the top of the crushing and mixing inner tank, an inner bearing body is installed at the inner center of the upper sealing cover, and a servo drive structure is movably connected at the inner center of the inner bearing body.

[0016] The inner bearing housing is equipped with an atomizing spray device at its eccentric position. The upper sealing cover is connected to two sides of the top with a bent feeding pipe. The bent feeding pipe extends to the outside of the upper tank assembly. The inner wall of the crushing and mixing inner tank is equipped with several inner grinding bodies. The outer side of the grinding bodies is movably provided with an internal telescopic cleaning structure.

[0017] As a preferred embodiment of the present invention, the servo drive structure includes:

[0018] A servo drive source is installed on the inner top of the lower base. The outer side of the output end of the servo drive source is connected to a transmission belt via a synchronous pulley. The transmission belt extends into the interior of the upper tank assembly.

[0019] A rotating shaft is connected to the inner side of the transmission belt via a synchronous pulley. The rotating shaft is movably connected to the center inside the inner bearing housing. A central reciprocating screw extending into the inner crushing and mixing tank is connected to the bottom of the rotating shaft. A connecting rod is installed at the bottom of the central reciprocating screw.

[0020] The rotating shaft is connected to an atomizing spray device at its top, an internal telescopic cleaning structure is installed on the outer side of the intermediate reciprocating screw, a centrifugal elastic grinding structure is installed on the outer side of the connecting rod, and a scraping and screening structure is connected to the bottom of the connecting rod.

[0021] As a preferred embodiment of the present invention, the in-tank telescopic cleaning structure includes:

[0022] An intermediate sliding block is connected to the outside of the intermediate reciprocating lead screw via ball bearings. Multiple hydraulic push rods are connected to the outside of the intermediate sliding block, and the output end of each hydraulic push rod is connected to a guide seat.

[0023] A side connecting block is rotatably connected to the inner side of the guide seat. The shaft ends of the left and right sides of the side connecting block are locked and fixed to the rotational relationship with the guide seat by a limiting cylinder installed on the side of the guide seat.

[0024] An inner wall cleaning scraper is installed at the bottom of the side connecting block and is slidably connected to the inner wall of the crushing and mixing tank. The inner wall cleaning scraper is movably disposed between two adjacent grinding bodies.

[0025] As a preferred embodiment of the present invention, the centrifugal elastic grinding structure includes:

[0026] An upper assembly plate is installed on the outside of the connecting rod by screws. Multiple vertical assembly rods are installed at the eccentric part inside the upper assembly plate. A lower assembly plate is installed on the outside of the bottom of the vertical assembly rods and is installed on the outside of the connecting rod by screws.

[0027] An inner grinding block is obliquely mounted on the outside of the vertical assembly rod, and a plurality of outwardly protruding metal blocks are installed at the root of the inner grinding block.

[0028] In a preferred embodiment of the present invention, a vertical rod is installed inside the inner grinding block, and an outer movable block is slidably connected to the outer sides of the upper and lower ends of the vertical rod. The outer movable block is slidably connected to the upper and lower sides inside the inner grinding block, and its bottom is connected to the inner wall of the inner grinding block by a first spring.

[0029] The outer movable block is equipped with an inner grinding component on the side away from the first spring. A second spring is installed at the center of the inner wall of the inner grinding component. The second spring is connected to the side of the vertical rod. Multiple inner grinding protrusions are installed at the root of the inner grinding component. The inner grinding protrusions extend to the outside of the inner grinding block and are movably arranged between two adjacent outer protruding metal blocks.

[0030] As a preferred embodiment of the present invention, the scraping and screening structure includes:

[0031] A lower reciprocating screw is connected to the bottom of the connecting rod. The lower reciprocating screw is rotatably connected to the center of the top of the screening screen. A lower slider is connected to the outside of the lower reciprocating screw via ball bearings. A connecting arm is rotatably connected to the outside of the lower slider.

[0032] The movable slider is rotatably connected to the bottom of the connecting arm and slidably connected to the outside of the guide portion, which is installed in a cross shape on the top of the screening screen frame portion.

[0033] An embedded mounting body is installed on top of the movable slider by screws and located on the side of the connecting arm. A flexible scraping component is embedded inside the embedded mounting body to push the material located on top of the screening screen.

[0034] As a preferred embodiment of the present invention, the atomizing spray device includes:

[0035] A water storage tank is installed at the center of the top of the upper tank assembly by screws. A liquid push plate is rotatably connected to the bottom of the water storage tank. An inclined rod is installed at the eccentric part of the top of the liquid push plate. The inclined rod is sleeved and fixed on the outside of the upper rotating rod. The upper rotating rod is connected to the top of the rotating shaft.

[0036] An inner notch is provided at the edge of the liquid push plate, and a one-way valve installed inside the water storage tank is provided on the side of the liquid push plate.

[0037] A liquid pipeline is connected to the one-way valve. An annular pipe is connected to the bottom of the liquid pipeline, and the annular pipe is sleeved on the outside of the rotating shaft. Multiple atomizing nozzles are connected to the bottom of the annular pipe.

[0038] The atomizing nozzle is installed at an eccentric position inside the inner bearing body and is located on the outside of the intermediate reciprocating lead screw.

[0039] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0040] 1. In the digestion unit for calcium hydroxide production, when grinding the raw materials (limestone or quicklime) used to produce calcium hydroxide, multiple internal grinding blocks can be continuously rotated to grind the raw materials (limestone or quicklime) outside the grinding blocks and inside the crushing and mixing tank, achieving uniform and automated grinding operations. Simultaneously, during the centrifugal grinding process, the internal grinding components can be elastically moved according to the centrifugal force, elastically cleaning the area between the two protruding metal blocks at the root of the grinding blocks. This actively pushes out or scrapes off any stuck hard particles, preventing the raw materials (limestone or quicklime) from sticking to the sides of the protruding metal blocks and losing their grinding ability.

[0041] It should be noted that while the inner grinding block is continuously rotating, the inner wall cleaning scraper can be moved up and down simultaneously through the screw structure to sweep and clean the raw materials (limestone or quicklime) that are stuck to the side of the grinding body, so as to avoid the raw materials (limestone or quicklime) sticking to the surface of the grinding body and ensure the grinding effect of the grinding body on the raw materials.

[0042] 2. In the digestion unit for calcium hydroxide production, when the unit is used as a grinding device for the raw material (limestone or quicklime) of calcium hydroxide, the force that drives the internal grinding blocks to rotate can also drive multiple flexible scraping components set in various positions to extend and retract through the screw drive. This scrapes the raw material (after grinding) of calcium hydroxide that has fallen onto the top of the screening screen, preventing the raw material (after grinding) of calcium hydroxide from accumulating and clogging on the top of the screening screen (on the mesh), thereby improving the screening effect of the ground calcium hydroxide raw material.

[0043] 3. In the digestion unit for calcium hydroxide production, when the unit serves as a digestion device for the raw material (after grinding) of calcium hydroxide, the raw material (after grinding) and water are stirred and mixed by rotating the internal grinding blocks. Simultaneously, the driving force for stirring and mixing the raw material (after grinding) and water also drives the liquid pusher disc to rotate, intermittently filling the atomizing nozzle with water, which is then sprayed atomized. This provides sufficient water for the digestion and mixing reaction of the raw material (after grinding) while avoiding the problem of instantaneous temperature spikes and localized over-wetting that occur when water is added to the calcium hydroxide raw material, reducing the probability of calcium hydroxide agglomeration or clumping. Furthermore, it facilitates maintaining appropriate moisture in the material, ensuring uniform moisture distribution and layer-by-layer reaction, resulting in calcium hydroxide powder with finer particle size, better dispersibility, and higher activity. Attached Figure Description

[0044] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0045] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0046] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 This is a schematic diagram of the overall main view of the present invention;

[0048] Figure 3 This is a schematic cross-sectional view of the entire structure of the present invention;

[0049] Figure 4This is a schematic diagram of the overall front cross-section of the present invention;

[0050] Figure 5 This is the present invention. Figure 4 Enlarged structural diagram of region A in the middle;

[0051] Figure 6 This is a cross-sectional structural diagram showing the connection between the inner crushing and mixing tank and the outer vertical digestion tank of the present invention;

[0052] Figure 7 This is a cross-sectional structural diagram showing the connection between the crushing and mixing inner tank and the servo grinding and mixing device of the present invention;

[0053] Figure 8 This is a front cross-sectional view of the connection between the scraping and screening structure and the centrifugal elastic grinding structure of the present invention.

[0054] Figure 9 This is a cross-sectional structural diagram showing the connection between the crushing and mixing inner tank and the internal telescopic cleaning structure of the present invention.

[0055] Figure 10 This is a cross-sectional structural diagram showing the connection between the crushing and mixing inner tank and the centrifugal elastic grinding structure of the present invention;

[0056] Figure 11 This is a cross-sectional schematic diagram of the centrifugal elastic grinding structure of the present invention;

[0057] Figure 12 This is the present invention. Figure 11 Enlarged structural diagram of region B in the middle;

[0058] Figure 13 This is a cross-sectional structural diagram showing the connection between the conical discharge lower tank assembly and the scraping screening structure of the present invention;

[0059] Figure 14 This is a cross-sectional structural diagram showing the connection between the servo drive structure and the atomizing spray device of the present invention;

[0060] Figure 15 This is the present invention. Figure 14 Enlarged structural diagram of region C in the middle;

[0061] Figure 16 This is the present invention. Figure 9 Enlarged structural diagram of region D in the middle;

[0062] In the picture:

[0063] 10. Lower base;

[0064] 20. Vertical digester outer tank; 201. Intermediate outer tank assembly; 202. Upper tank assembly; 203. Conical discharge lower tank assembly; 2031. Screening mesh;

[0065] 30. Crushing and mixing inner tank; 301. Upper sealing cover plate; 3011. Bending feed pipe; 302. Inner bearing body; 303. Grinding body;

[0066] 40. Servo grinding and mixing device; 401. Servo drive structure; 402. In-tank telescopic cleaning structure; 403. Centrifugal elastic grinding structure; 404. Sweeping and sieving structure;

[0067] 4011 Servo drive source; 4012 Transmission belt; 4013 Rotating shaft; 4014 Intermediate reciprocating lead screw; 4015 Connecting shaft;

[0068] 4021. Intermediate sliding block; 4022. Hydraulic push rod; 4023. Guide seat; 4024. Side connecting block; 4025. Limiting cylinder; 4026. Inner wall cleaning scraper;

[0069] 4031. Upper assembly plate; 4032. Vertical assembly rod; 4033. Lower assembly plate; 4034. Inner grinding block; 40341. Vertical rod; 40342. Outer movable block; 40343. First spring; 40344. Inner grinding component; 40345. Second spring; 40346. Inner grinding protrusion; 4035. Outer protruding metal block;

[0070] 4041. Lower reciprocating lead screw; 4042. Lower slider; 4043. Connecting arm; 4044. Movable slider; 4045. Guide part; 4046. Embedded mounting body; 4047. Flexible scraping component;

[0071] 50. Atomizing spray device; 501. Water storage tank; 502. Liquid push plate; 503. Angled rod; 504. Upper rotating rod; 505. Inner notch; 506. One-way valve; 507. Liquid pipeline; 508. Circular pipeline; 509. Atomizing nozzle;

[0072] 60. Upper base. Detailed Implementation

[0073] 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.

[0074] Example 1

[0075] Please see Figures 1-16A digestion device for calcium hydroxide production includes a lower base 10 and an upper base 60; a vertical digestion outer tank 20 is mounted on the sides of the lower base 10 and the upper base 60; a crushing and mixing inner tank 30 is installed inside the vertical digestion outer tank 20; a servo grinding and mixing device 40 is installed inside the crushing and mixing inner tank 30 and extends into the vertical digestion outer tank 20; an atomizing spray device 50 is installed on the top of the servo grinding and mixing device 40 and extends into the crushing and mixing inner tank 30; the atomizing spray device 50 is installed at the center of the top of the vertical digestion outer tank 20. The servo grinding and mixing device 40 includes: a servo drive structure 401 mounted on the upper base 60 and extending into the inner crushing and mixing tank 30; an in-tank telescopic cleaning structure 402 connected to the servo drive structure 401; a centrifugal elastic grinding structure 403 disposed inside the inner crushing and mixing tank 30 and mounted on the outside of the servo drive structure 401 by screws; and a sweeping and screening structure 404 mounted at the bottom of the servo drive structure 401 and located at the bottom of the inner crushing and mixing tank 30, wherein an atomizing spray device 50 is mounted on the top of the servo drive structure 401.

[0076] It should be noted that the vertical digester outer tank 20 includes: an intermediate outer tank assembly 201; an upper tank assembly 202 installed on top of the intermediate outer tank assembly 201 by screws; and a conical discharge lower tank assembly 203 installed on bottom of the intermediate outer tank assembly 201 by screws. The upper tank assembly 202 is installed on the side of the upper base 60, the upper base 60 is installed on one side of the bottom of the intermediate outer tank assembly 201, an atomizing spray device 50 is installed on the top of the upper tank assembly 202, a crushing and mixing inner tank 30 is installed inside the intermediate outer tank assembly 201, a scraping and screening structure 404 is installed inside the conical discharge lower tank assembly 203, and a servo drive structure 401 extending to the outside is installed inside the upper tank assembly 202. A screening screen 2031 is installed at the bottom of the conical discharge lower tank assembly 203, and a scraping and screening structure 404 is provided on the top of the screening screen 2031.

[0077] The top of the crushing and mixing inner tank 30 is equipped with an upper sealing cover plate 301. An inner bearing body 302 is installed at the center of the upper sealing cover plate 301. A servo drive structure 401 is movably connected at the center of the inner bearing body 302. An atomizing spray device 50 is installed at the eccentric part of the inner bearing body 302. Bending feed pipes 3011 are connected to both sides of the top of the upper sealing cover plate 301. The bending feed pipes 3011 extend to the outside of the upper tank group 202. Several inner grinding bodies 303 are installed on the inner wall of the crushing and mixing inner tank 30. An internal telescopic cleaning structure 402 is movably provided on the outside of the grinding bodies 303.

[0078] The working principle described above is as follows: When grinding the raw material (limestone or quicklime) for calcium hydroxide, the raw material (limestone or quicklime) is first conveyed to the interior of the crushing and mixing inner tank 30 through the bent feeding pipe 3011. Simultaneously, during the conveying process, the servo drive structure 401 is activated, driving the internal telescopic cleaning structure 402 and the centrifugal elastic grinding structure 403 installed on the outside of the servo drive structure 401 to operate. This continuously grinds the raw material (limestone or quicklime) for calcium hydroxide inside the crushing and mixing inner tank 30, ensuring the cleanliness of the surfaces of the internal telescopic cleaning structure 402 and the centrifugal elastic grinding structure 403 during grinding. This prevents some raw material (limestone or quicklime) from adhering to the surfaces of the internal telescopic cleaning structure 402 and the centrifugal elastic grinding structure 403, thus ensuring the effective grinding of the raw material (limestone or quicklime) for calcium hydroxide. Simultaneously, after grinding, the calcium hydroxide raw material (limestone or quicklime) enters the conical discharge lower tank assembly 203, and is screened by the screening screen 2031 inside the conical discharge lower tank assembly 203. At this time, the operation of the servo drive structure 401 can drive the connected scraping screening structure 404 to push the raw material (after grinding) that falls to the top of the screening screen 2031, avoiding the accumulation of raw material on the surface of the screening screen 2031 and improving the screening effect of the raw material.

[0079] It should be noted that the centrifugal elastic grinding structure 403 is designed so that the centrifugal force generated when it rotates can automatically clean the claw part of the centrifugal elastic grinding structure 403 according to the magnitude of the centrifugal force, actively pushing out or scraping off the stuck hard particles, and preventing the claw part of the centrifugal elastic grinding structure 403 from gradually becoming clogged and losing its grinding ability.

[0080] For details, please refer to the following: Figure 4 , Figure 5 , Figure 6 and Figure 14The servo drive structure 401 includes a servo drive source 4011, which is mounted on the inner top of the lower base 10. A transmission belt 4012 is connected to the outer side of the output end of the servo drive source 4011 via a synchronous pulley. The transmission belt 4012 extends into the interior of the upper tank assembly 202. A rotating shaft 4013 is connected to the inner side of the transmission belt 4012 via a synchronous pulley. The rotating shaft 4013 is movably connected to the center inside the inner bearing housing 302. The bottom of the shaft 4013 is connected to an intermediate reciprocating screw 4014 extending into the inner crushing and mixing tank 30. A connecting rod 4015 is installed at the bottom of the intermediate reciprocating screw 4014. The top of the rotating shaft 4013 is connected to an atomizing spray device 50. An inner tank telescopic cleaning structure 402 is installed on the outside of the intermediate reciprocating screw 4014. A centrifugal elastic grinding structure 403 is installed on the outside of the connecting rod 4015. A scraping and screening structure 404 is connected to the bottom of the connecting rod 4015.

[0081] In the calcium hydroxide production digestion apparatus of the present invention, when grinding the raw material (limestone or quicklime) for calcium hydroxide, the servo drive source 4011 is activated, driving the transmission belt 4012 connected to the outer side of the output end of the servo drive source 4011 via a synchronous pulley, and driving the rotating shaft 4013 connected to the inner side of the transmission belt 4012 via a synchronous pulley to rotate. When the rotating shaft 4013 rotates, it drives the intermediate reciprocating lead screw 4014 and the connecting rod 4015 connected in sequence at its bottom to rotate.

[0082] For details, please refer to the following: Figure 9 The internal telescopic cleaning structure 402 includes a central sliding block 4021, which is connected to the outside of a central reciprocating screw 4014 via ball bearings. Multiple hydraulic push rods 4022 are connected to the outside of the central sliding block 4021, and the output end of the hydraulic push rods 4022 is connected to a guide seat 4023. A side connecting block 4024 is rotatably connected to the inside of the guide seat 4023. The shaft ends of the left and right sides of the side connecting block 4024 are locked and fixed to the rotational relationship with the guide seat 4023 by a limiting cylinder 4025 installed on the side of the guide seat 4023. An inner wall cleaning scraper 4026 is installed at the bottom of the side connecting block 4024 and is slidably connected to the inner wall of the crushing and mixing inner tank 30. The inner wall cleaning scraper 4026 is movably arranged between two adjacent grinding bodies 303.

[0083] In the digestion apparatus for calcium hydroxide production of the present invention, when the intermediate reciprocating screw 4014 rotates, it drives the intermediate sliding block 4021 connected to it by ball bearings to move up and down, and drives the hydraulic push rod 4022 and guide seat 4023 mounted on the side of the intermediate sliding block 4021 to operate. This causes the inner wall cleaning scraper 4026 connected to the guide seat 4023 to move up and down and slide on the side of the grinding body 303, and to sweep and clean the surface of the grinding body 303, so as to prevent the raw material of calcium hydroxide (limestone or quicklime) from sticking and adsorbing on the grinding body 303.

[0084] It should be noted that when cleaning the grinding body 303 is not required, the guide seat 4023 and the inner wall cleaning scraper 4026 can be rotatably connected (via the side connecting block 4024) by activating the limit cylinder 4025. In this case, when the hydraulic push rod 4022 moves, its controllable extension and retraction will prevent the inner wall cleaning scraper 4026 from sliding up and down on the side of the grinding body 303.

[0085] For details, please refer to the following: Figure 10 and Figure 11 The centrifugal elastic grinding structure 403 includes an upper assembly plate 4031, which is installed on the outside of the connecting rod 4015 by screws. Multiple vertical assembly rods 4032 are installed at the eccentric part inside the upper assembly plate 4031. A lower assembly plate 4033 is installed on the outside of the bottom of the vertical assembly rods 4032 and is installed on the outside of the connecting rod 4015 by screws. An inner grinding block 4034 is obliquely installed and sleeved on the outside of the vertical assembly rods 4032. Multiple outwardly protruding metal blocks 4035 are installed at the root of the inner grinding block 4034.

[0086] In the digestion apparatus for calcium hydroxide production of the present invention, when grinding calcium hydroxide raw materials (limestone or quicklime), the upper assembly plate 4031 and the lower assembly plate 4033 are installed on the outside of the connecting rod 4015 by screws, and the inner grinding block 4034 is installed between the upper assembly plate 4031 and the lower assembly plate 4033 by the vertical assembly rod 4032. At this time, the rotation of the connecting rod 4015 will drive the inner grinding block 4034 to rotate, and the calcium hydroxide raw materials (limestone or quicklime) are ground by the protruding metal blocks 4035 (multiple) at the root of the inner grinding block 4034.

[0087] For details, please refer to the following: Figure 11 and Figure 12The inner grinding block 4034 has a vertical rod 40341 ​​installed inside. The outer sides of the upper and lower ends of the vertical rod 40341 ​​are slidably connected to an outer movable block 40342. The outer movable block 40342 is slidably connected to the upper and lower sides inside the inner grinding block 4034, and its bottom is connected to the inner wall of the inner grinding block 4034 through a first spring 40343. The side of the outer movable block 40342 away from the first spring 40343 has an inner grinding component 40344 installed. A second spring 40345 is installed at the center of the inner wall of the inner grinding component 40344. The second spring 40345 is connected to the side of the vertical rod 40341. Multiple inner grinding protrusions 40346 are installed at the root of the inner grinding component 40344. The inner grinding protrusions 40346 extend to the outer side of the inner grinding block 4034 and are movably arranged between two adjacent outer protruding metal blocks 4035.

[0088] In the digestion apparatus for calcium hydroxide production of the present invention, when the inner grinding block 4034 rotates to grind the calcium hydroxide raw material (limestone or quicklime), the centrifugal force generated by the rotation will generate an outward pushing force, which will drive the outer movable block 40342 to extend and retract outside the vertical rod 40341, so that the inner grinding component 40344 installed on the side of the outer movable block 40342 moves outward, and cleans the raw material that is adhered and adsorbed between the two protruding metal blocks 4035, ensuring the grinding effect of the inner grinding block 4034.

[0089] It should be noted that when the outer movable block 40342 moves outward, it stretches the first spring 40343, and when the inner grinding component 40344 moves outward, it stretches the second spring 40345. At this time, the elasticity of the first spring 40343 and the second spring 40345 generates an elastic compressive force, which repeatedly expands and contracts due to centrifugal force or changes in contact pressure, actively pushing out or scraping off the stuck hard particles, preventing the protruding metal block 4035 from losing its grinding ability due to gradual blockage.

[0090] For details, please refer to the following: Figure 13The scraping and screening structure 404 includes a lower reciprocating screw 4041, which is connected to the bottom of the connecting rod 4015. The lower reciprocating screw 4041 is rotatably connected to the center of the top of the screening screen 2031. A lower slider 4042 is connected to the outer side of the lower reciprocating screw 4041 via ball bearings. A connecting arm 4043 is rotatably connected to the outer side of the lower slider 4042. A movable slider 4044 is rotatably connected to the bottom of the connecting arm 4043. 044 is slidably connected to the outside of the guide part 4045, which is installed in a cross shape on the top of the frame part of the screening screen 2031; the embedded mounting body 4046 is installed on the top of the movable slider 4044 by screws and is located on the side of the connecting arm 4043. The flexible scraping component 4047 is embedded inside the embedded mounting body 4046, and the flexible scraping component 4047 pushes the material on the top of the screening screen 2031.

[0091] In the digestion apparatus for calcium hydroxide production of the present invention, when the connecting rod 4015 rotates, the lower reciprocating screw 4041 connected to its bottom rotates, driving the lower slider 4042 connected to the outer side of the lower reciprocating screw 4041 via ball bearings to move up and down. When the lower slider 4042 moves up and down, the connecting arm 4043 rotatably connected to its side drives the movable slider 4044 to slide horizontally on the outer side of the guide portion 4045, causing the top of the movable slider 4044 to move horizontally (reciprocating) via the flexible scraping component 4047 installed in the embedded mounting body 4046, scraping the raw material (after grinding) that has fallen onto the top of the screening screen 2031, thus preventing the raw material from accumulating on the top of the screening screen 2031.

[0092] Example 2

[0093] When preparing calcium hydroxide by mixing, the conical discharge lower tank group 203, the screening screen 2031 and the sweeping screening structure 404 in the above embodiment 1 are disassembled, and another discharge tank is installed at the bottom of the middle outer tank group 201 by screws, while an atomizing spray device 50 is installed at the top of the upper tank group 202.

[0094] For details, please refer to the following: Figure 14 and Figure 15The atomizing spray device 50 includes a water storage tank 501, which is screwed to the center of the top of the upper tank assembly 202. A liquid pusher plate 502 is rotatably connected to the bottom of the water storage tank 501. An oblique rod 503 is installed at the eccentric position of the top of the liquid pusher plate 502, and the oblique rod 503 is sleeved and fixed to the outside of an upper rotating rod 504, which is connected to the top of a rotating shaft 4013. An inner notch 505 is formed at the edge of the liquid pusher plate 502. A one-way valve 506 is installed inside the water storage tank 501 on the side of 502; a liquid pipeline 507 is connected to the one-way valve 506, and an annular pipeline 508 is connected to the bottom of the liquid pipeline 507. The annular pipeline 508 is sleeved on the outside of the rotating shaft 4013, and multiple atomizing nozzles 509 are connected to the bottom of the annular pipeline 508. The atomizing nozzles 509 are installed at the eccentric position inside the inner bearing body 302 and are located on the outside of the middle reciprocating screw 4014.

[0095] In the digestion apparatus for calcium hydroxide production of the present invention, the rotating shaft 4013 and the upper rotating rod 504, assembled by screws, ensure that during the process of driving the inner grinding block 4034 to rotate and digest and stir the raw materials, the rotation of the upper rotating rod 504 will drive the liquid pushing disk 502 installed on its outer side via the inclined rod 503 to rotate. At this time, through the inner notch 505 inside the liquid pushing disk 502, the liquid (water) pushed by the rotation of the liquid pushing disk 502 can intermittently enter the interior of the liquid pipeline 507, and be transported to the interior of multiple atomizing nozzles 509 through the liquid pipeline 507 and the annular pipeline 508 connected thereto, for intermittent liquid (water) atomization spraying operation.

[0096] It should be noted that intermittent liquid (water) atomization spraying avoids the problem of instantaneous temperature spikes in the calcium hydroxide raw material (limestone or quicklime) caused by adding water all at once, thus ensuring high safety. It also solves the problem of excessive moisture in certain areas of the calcium hydroxide raw material (limestone or quicklime) leading to agglomeration or clumping caused by adding water all at once, ensuring uniform moisture distribution and layer-by-layer reaction, resulting in calcium hydroxide powder with finer particle size, better dispersibility, and higher activity.

[0097] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0098] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0099] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. A digestion device for calcium hydroxide production, characterized in that, include: A lower base (10) and an upper base (60); a vertical digester outer tank (20) is mounted on the sides of the lower base (10) and the upper base (60); a crushing and mixing inner tank (30) is installed inside the vertical digester outer tank (20); a servo grinding and mixing device (40) is installed inside the crushing and mixing inner tank (30) and extends into the vertical digester outer tank (20), and an atomizing spray device (50) extending into the crushing and mixing inner tank (30) is mounted on the top of the servo grinding and mixing device (40), and the atomizing spray device (50) is installed at the center of the top of the vertical digester outer tank (20). The servo grinding and mixing device (40) includes: a servo drive structure (401) mounted on the upper base (60) and extending into the crushing and mixing inner tank (30); an in-tank telescopic cleaning structure (402) connected to the servo drive structure (401); a centrifugal elastic grinding structure (403) disposed inside the crushing and mixing inner tank (30) and mounted on the outside of the servo drive structure (401) by screws; and a scraping and screening structure (404) mounted at the bottom of the servo drive structure (401) and located at the bottom of the crushing and mixing inner tank (30). The servo drive structure (401) is equipped with an atomizing spray device (50) on its top.

2. The digestion device for calcium hydroxide production according to claim 1, characterized in that: The vertical digester outer tank (20) includes: an intermediate outer tank assembly (201); an upper tank assembly (202) installed on top of the intermediate outer tank assembly (201) by screws; and a conical discharge lower tank assembly (203) installed on the bottom of the intermediate outer tank assembly (201) by screws. The upper tank assembly (202) is installed on the side of the upper base (60), the upper base (60) is installed on one side of the bottom of the middle outer tank assembly (201), the upper tank assembly (202) is equipped with an atomizing spray device (50), the middle outer tank assembly (201) is equipped with a crushing and mixing inner tank (30) on the inner side, the cone-shaped discharge lower tank assembly (203) is equipped with a scraping and screening structure (404), and the upper tank assembly (202) is equipped with a servo drive structure (401) extending to the outside. The inner bottom of the conical discharge tank group (203) is equipped with a screening screen (2031), and the top of the screening screen (2031) is provided with a scraping screening structure (404).

3. The digestion device for calcium hydroxide production according to claim 2, characterized in that: The top of the crushing and mixing inner tank (30) is equipped with an upper sealing cover plate (301), and an inner bearing body (302) is installed at the inner center of the upper sealing cover plate (301). A servo drive structure (401) is movably connected at the inner center of the inner bearing body (302). The inner bearing body (302) is equipped with an atomizing spray device (50) at its eccentric position. The upper sealing cover (301) is connected to two sides of its top with a bent feeding pipe (3011). The bent feeding pipe (3011) extends to the outside of the upper tank assembly (202). The inner wall of the crushing and mixing inner tank (30) is equipped with several inner grinding bodies (303). The outer side of the grinding bodies (303) is movably provided with an internal telescopic cleaning structure (402).

4. A digestion device for calcium hydroxide production according to claim 3, characterized in that: The servo drive structure (401) includes: A servo drive source (4011) is installed on the inner top of the lower base (10). The outer side of the output end of the servo drive source (4011) is connected to a transmission belt (4012) via a synchronous pulley. The transmission belt (4012) extends into the interior of the upper tank assembly (202). A rotating shaft (4013) is connected to the inner side of the transmission belt (4012) via a synchronous pulley. The rotating shaft (4013) is movably connected to the center inside the inner bearing body (302). The bottom of the rotating shaft (4013) is connected to an intermediate reciprocating screw (4014) extending into the crushing and mixing inner tank (30). A connecting rod (4015) is installed at the bottom of the intermediate reciprocating screw (4014). The top of the rotating shaft (4013) is connected to an atomizing spray device (50), the outside of the intermediate reciprocating screw (4014) is equipped with an in-tank telescopic cleaning structure (402), the outside of the connecting rod (4015) is equipped with a centrifugal elastic grinding structure (403), and the bottom of the connecting rod (4015) is connected to a scraping and screening structure (404).

5. A digestion device for calcium hydroxide production according to claim 4, characterized in that: The in-tank telescopic cleaning structure (402) includes: An intermediate sliding block (4021) is connected to the outside of the intermediate reciprocating screw (4014) via ball bearings. Multiple hydraulic push rods (4022) are connected to the outside of the intermediate sliding block (4021), and the output end of the hydraulic push rods (4022) is connected to a guide seat (4023). Side connecting block (4024), the side connecting block (4024) is rotatably connected to the inner side of the guide seat (4023), and the shaft end portions on the left and right sides of the side connecting block (4024) are locked and fixed to the rotational relationship between the side connecting block (4024) and the guide seat (4023) by a limiting cylinder (4025) installed on the side of the guide seat (4023); The inner wall cleaning scraper (4026) is installed at the bottom of the side connecting block (4024). The inner wall cleaning scraper (4026) is slidably connected to the inner wall of the crushing and mixing inner tank (30). The inner wall cleaning scraper (4026) is movably disposed between two adjacent grinding bodies (303).

6. A digestion device for calcium hydroxide production according to claim 4, characterized in that: The centrifugal elastic grinding structure (403) includes: An upper assembly plate (4031) is installed on the outside of the connecting rod (4015) by screws. Multiple vertical assembly rods (4032) are installed at the eccentric part inside the upper assembly plate (4031). A lower assembly plate (4033) is installed on the outside of the bottom of the vertical assembly rods (4032). The lower assembly plate (4033) is installed on the outside of the connecting rod (4015) by screws. An inner grinding block (4034) is obliquely installed on the outside of the vertical assembly rod (4032), and a plurality of outwardly protruding metal blocks (4035) are installed at the root of the inner grinding block (4034).

7. A digestion device for calcium hydroxide production according to claim 6, characterized in that: A vertical rod (40341) is installed inside the inner grinding block (40344). External movable blocks (40342) are slidably connected to the outer sides of the upper and lower ends of the vertical rod (40341). The external movable blocks (40342) are slidably connected to the upper and lower sides inside the inner grinding block (4034), and their bottoms are connected to the inner wall of the inner grinding block (4034) via a first spring (40343). The outer movable block (40342) is equipped with an inner grinding component (40344) on the side away from the first spring (40343). A second spring (40345) is installed at the center of the inner wall of the inner grinding component (40344). The second spring (40345) is connected to the side of the vertical rod (40341). A plurality of inner grinding protrusions (40346) are installed at the root of the inner grinding component (40344). The inner grinding protrusions (40346) extend to the outside of the inner grinding block (4034) and are movably arranged between two adjacent outer protruding metal blocks (4035).

8. A digestion device for calcium hydroxide production according to claim 4, characterized in that: The scraping and screening structure (404) includes: A lower reciprocating screw (4041) is connected to the bottom of the connecting rod (4015). The lower reciprocating screw (4041) is rotatably connected to the center of the top of the screening screen (2031). A lower slider (4042) is connected to the outside of the lower reciprocating screw (4041) via ball bearings. A connecting arm (4043) is rotatably connected to the outside of the lower slider (4042). Movable slider (4044), which is rotatably connected to the bottom of the connecting arm (4043), and slidably connected to the outside of the guide part (4045), which is installed in a cross shape on the top of the frame part of the screening screen (2031); An embedded mounting body (4046) is installed on top of the movable slider (4044) by screws and is located on the side of the connecting arm (4043). A flexible scraping component (4047) is embedded inside the embedded mounting body (4046) to push the material located on top of the screening screen (2031).

9. A digestion device for calcium hydroxide production according to claim 4, characterized in that: The atomizing spray device (50) includes: A water storage tank (501) is installed at the center of the top of the upper tank assembly (202) by screws. A liquid push plate (502) is rotatably connected to the bottom of the water storage tank (501). An inclined rod (503) is installed at the eccentric part of the top of the liquid push plate (502). The inclined rod (503) is sleeved and fixed on the outside of the upper rotating rod (504). The upper rotating rod (504) is connected to the top of the rotating shaft (4013). An inner notch (505) is provided at the edge of the liquid push plate (502), and a one-way valve (506) installed inside the water storage tank (501) is provided on the side of the liquid push plate (502). A liquid pipeline (507) is connected to the one-way valve (506). The bottom of the liquid pipeline (507) is connected to an annular pipeline (508). The annular pipeline (508) is sleeved on the outside of the rotating shaft (4013). The bottom of the annular pipeline (508) is connected to multiple atomizing nozzles (509). The atomizing nozzle (509) is installed at the eccentric position inside the inner bearing body (302) and is located on the outside of the intermediate reciprocating screw (4014).

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