A screening device for agglomerate-prone calcium hydroxide fines

Abstract

The utility model discloses a kind of for easy calcium hydroxide fine powder screening device, including top cover, support cylinder and main sieve box, the top cover is covered in the upper portion of main sieve box and is embedded with discharging pipeline, cam jacking mechanism is provided on the support cylinder;The main sieve box is connected with the support cylinder by cam jacking mechanism, the cam jacking mechanism can periodically jacking the main sieve box when rotating;Screening mechanism is provided in the main sieve box;The screening mechanism includes independent sieve frame suspendedly installed in the inside of main sieve box by flexible vibration isolator and screen cloth fixed on the independent sieve frame;Independent sieve frame and the support cylinder are commonly provided with ultrasonic generating assembly on it.The utility model belongs to screening device technical field, specifically refers to a kind of for easy calcium hydroxide fine powder screening device.

Description

Technical Field

[0001] This utility model belongs to the technical field of screening devices, specifically referring to a screening device for easily agglomerated calcium hydroxide fine powder. Background Technology

[0002] Calcium hydroxide fine powder, as an important industrial raw material, is widely used in environmental desulfurization, water treatment, chemical synthesis, and building materials. Its sieving efficiency directly affects the quality and performance of the final product. However, existing sieving technologies generally face significant challenges when processing fine powders like calcium hydroxide that are highly hygroscopic and prone to agglomeration, mainly in the following three aspects: First, the single vibration mode leads to screen clogging. Traditional vibrating screening devices mainly rely on a single mechanical vibration mode, which is difficult to effectively handle the problem of highly viscous agglomeration of calcium hydroxide fine powder. Due to their high surface energy and strong electrostatic force, the fine calcium hydroxide particles easily form agglomerates on the screen surface, quickly clogging the screen holes. This not only leads to a sharp drop in screening efficiency and difficulty in controlling product accuracy, but also forces frequent shutdowns for cleaning during production, severely restricting continuous production and increasing maintenance costs and labor intensity.

[0003] Secondly, poor equipment sealing can lead to dust leaks. While the strong overall mechanical vibration of conventional equipment can promote material spillage, it can also easily cause loosening of connecting parts and failure of dynamic seals, resulting in dust leaks. This not only pollutes the working environment but also causes material loss and safety hazards.

[0004] Furthermore, the material conveying process relies on additional power. Existing equipment often requires external power units (such as screw conveyors) for screening and discharge stages, which not only increases equipment complexity and energy consumption but also raises the system's failure rate and maintenance difficulty. Utility Model Content

[0005] To address the problems of traditional screening equipment, which suffers from a single vibration mode, easily leading to screen blockage when processing easily agglomerated calcium hydroxide fine powder; poor equipment sealing causing dust leakage; and reliance on additional power for material conveying, this invention provides a screening device for easily agglomerated calcium hydroxide fine powder.

[0006] To achieve the above functions, the technical solution adopted by this utility model is as follows: a screening device for easily agglomerated calcium hydroxide fine powder, including a top cover, a support cylinder and a main screen box, wherein the top cover covers the main screen box and is embedded with a feeding pipe, and the support cylinder is provided with a cam lifting mechanism. The main screen box is connected to the support cylinder through a cam lifting mechanism, which can periodically lift the main screen box when rotating. The main screen box is equipped with a screening mechanism; The screening mechanism includes an independent screen frame suspended inside the main screen box by a flexible vibration isolator and a screen mesh fixed on the independent screen frame; An ultrasonic generating component is provided on both the independent sieve frame and the support cylinder.

[0007] Furthermore, the ultrasonic generating assembly includes an ultrasonic generator and at least one ultrasonic transducer connected to the ultrasonic generator via a wire; The ultrasonic transducer is fixedly installed on the independent sieve frame; An L-shaped plate is fixed to the outer wall of the support cylinder, and the ultrasonic generator is fixedly installed on the L-shaped plate.

[0008] Furthermore, the bottom of the main screen box is provided with a fine powder collecting plate that is inclined at 15-30°; The screen is installed at an angle on the independent screen frame accordingly; The feeding pipe is located above the high end of the screen.

[0009] Furthermore, the lower sidewall of the independent sieve frame is provided with a first coarse powder outlet; The main screen box has a fine powder outlet on its side wall and a second coarse powder outlet located above the fine powder outlet; A flexible sealing channel is provided between the first coarse powder outlet and the second coarse powder outlet.

[0010] Furthermore, the flexible sealing channel remains inclined downwards from its connection with the first coarse powder outlet to its connection with the second coarse powder outlet.

[0011] Furthermore, both the fine powder outlet and the second coarse powder outlet are connected to a channel inclined at 10-15°, and the port of the channel is connected to a sealed conical hopper. The bottom of the conical hopper is connected to a material pipe with a valve.

[0012] Furthermore, the flexible vibration isolator is a ring structure, with its outer edge fixedly connected to the mounting hole opened on the main screen box, and its inner edge fixedly connected to the outer wall of the independent screen frame.

[0013] Furthermore, the cam lifting mechanism includes a drive assembly fixed outside the support cylinder, a rotating shaft rotatably disposed inside the support cylinder and driven by the drive assembly, a cam symmetrically fixedly sleeved on the rotating shaft, a reciprocating rod slidingly through the top of the support cylinder and fixedly connected to the main screen box, a support fixed to the bottom of the reciprocating rod, a rotating wheel rotatably disposed inside the support and rollingly cooperating with the cam, and a spring sleeved outside the reciprocating rod, wherein the two ends of the spring respectively abut against the support and the upper wall of the support cylinder.

[0014] Furthermore, the drive assembly includes a drive motor and a reducer fixed to the outer wall of the support cylinder; The output shaft of the drive motor is connected to the input end of the reducer, and the output end of the reducer passes through the support cylinder and is fixedly connected to the rotating shaft.

[0015] Furthermore, the support cylinder, main screen box, and independent screen frame are all circular; Multiple sets of limiting blocks are evenly arranged on the outer circumference of the support cylinder; The main screen box is equipped with multiple sets of L-shaped auxiliary limiting rods that are inserted into the limiting blocks.

[0016] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure: 1. To address the problem of screen clogging caused by a single vibration mode, this invention constructs a highly efficient composite screening mechanism through the synergistic effect of a cam lifting mechanism, a flexible vibration isolator, and an ultrasonic generator. The cam lifting mechanism provides strong basic mechanical vibration, while the flexible vibration isolator suspends the independent screen frame with the screen installed inside the main screen box, effectively isolating it from the direct impact of the main vibration. Based on this, the ultrasonic transducer is directly fixed to the independent screen frame, allowing high-frequency ultrasonic vibration to act precisely and efficiently on the screen, directly breaking up clumps of fine calcium hydroxide powder. This multi-synergistic mechanism of mechanical vibration, suspension isolation, and ultrasonic screen cleaning fundamentally solves the screen clogging problem, ensuring a smooth and efficient screening process, and significantly improving the fine powder throughput and product precision.

[0017] 2. To address the issue of dust leakage caused by poor equipment sealing, this invention connects the independently vibrating screen frame and the main screen box via a flexible sealed channel. This ensures dynamic sealing of the coarse powder conveying path, effectively preventing dust leakage, while also accommodating relative movement between components and preventing channel damage due to vibration. Simultaneously, combined with a sealed conical hopper, a fully enclosed dust control system is formed, preventing external impurities from entering and significantly improving the working environment, thus achieving cleaner production.

[0018] 3. Addressing the issue of reliance on external power for material conveying, this invention utilizes a comprehensive inclined design to create a highly efficient, non-powered material handling system. The screen, fine powder collecting plate, flexible sealing channel, and outlet channel all employ a specific angled design, forming a complete gravity-driven flow channel. This allows the entire process from screening and conveying to sorting and collection to be completed automatically using gravity and vibration, eliminating the need for external power devices such as screw conveyors. This simplifies the equipment structure and reduces equipment complexity and energy consumption. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a screening device for easily agglomerated calcium hydroxide fine powder proposed in this utility model; Figure 2This is a partial structural schematic diagram of a screening device for easily agglomerated calcium hydroxide fine powder proposed in this utility model; Figure 3 A cross-section of a screening device for easily agglomerated calcium hydroxide fine powder proposed in this utility model. Figure 1 ; Figure 4 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 5 A cross-section of a screening device for easily agglomerated calcium hydroxide fine powder proposed in this utility model. Figure 2 .

[0020] Among them, 1. Top cover, 11. Feed pipe, 2. Support cylinder, 21. Cam lifting mechanism, 211. Drive assembly, 2111. Drive motor, 2112. Reducer, 212. Rotary shaft, 213. Cam, 214. Reciprocating rod, 215. Support, 216. Rotary wheel, 217. Spring, 22. L-shaped plate, 23. Limiting block, 3. Main screen box, 31. Screening mechanism, 311. Independent screen frame, 3111. First coarse powder outlet, 312. Screen, 313. Ultrasonic generating assembly, 3131. Ultrasonic generator, 3132. Ultrasonic transducer, 32. Flexible vibration isolator, 331. Fine powder outlet, 332. Second coarse powder outlet, 34. Fine powder collecting plate, 35. Flexible sealing channel, 36. Channel, 37. Conical hopper, 38. Material pipe, 39. Auxiliary limiting rod. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, 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 limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-5 As shown, the present invention provides a screening device for easily agglomerated calcium hydroxide fine powder, including a top cover 1, a support cylinder 2, and a main screen box 3. The top cover 1 covers the main screen box 3 and is embedded with a discharge pipe 11. A cam lifting mechanism 21 is provided on the support cylinder 2. The main screen box 3 is connected to the support cylinder 2 through the cam lifting mechanism 21. The cam lifting mechanism 21 can periodically lift the main screen box 3 when rotating. A screening mechanism 31 is provided inside the main screen box 3. The screening mechanism 31 includes an independent screen frame 311 suspended inside the main screen box 3 by a flexible vibration isolator 32 and a screen 312 fixed on the independent screen frame 311. An ultrasonic generator 313 is provided on the independent screen frame 311 and the support cylinder 2. The cam lifting mechanism 21 realizes the periodic lifting vibration of the main screen box 3, providing basic power for material screening. At the same time, the flexible vibration isolator 32 is used to suspend the independent screen frame 311 inside the main screen box 3, avoiding mutual interference between the vibration of the main screen box 3 and the vibration of the independent screen frame 311. The ultrasonic generator 313 further optimizes the screening effect and solves the problem of screen 312 clogging caused by the easy agglomeration of calcium hydroxide fine powder.

[0025] like Figure 1-3 As shown in Figure 5, the ultrasonic generating assembly 313 includes an ultrasonic generator 3131 and at least one ultrasonic transducer 3132 connected to the ultrasonic generator 3131 via a wire. The ultrasonic transducer 3132 is fixedly installed on the independent screen frame 311, so that the vibration it generates can be directly transmitted to the screen 312. An L-shaped plate 22 is fixed to the outer wall of the support cylinder 2, and the ultrasonic generator 3131 is fixedly installed on the L-shaped plate 22. This arrangement maximizes the dispersion of fine powder on the surface of the screen 312, effectively breaks up fine powder agglomeration and prevents the screen 312 from clogging. The ultrasonic generator 3131 is fixed to the outer wall of the support cylinder 2 via the L-shaped plate 22, which can prevent the generator from being damaged by the vibration of the main screen box 3 or the independent screen frame 311 and ensure the stability of the wire connection, thereby ensuring that the ultrasonic generating assembly 313 can work continuously and reliably.

[0026] like Figure 2 , 3As shown in Figure 5, a fine powder collecting plate 34 inclined at 15-30° is provided at the bottom of the main screen box 3; the screen 312 is correspondingly inclined and installed on the independent screen frame 311; the discharge pipe 11 is located above the high end of the screen 312; both the screen 312 and the fine powder collecting plate 34 are inclined, using gravity to guide the material to move along the inclined direction. On the one hand, this allows the material to be screened to spread fully on the screen 312, increasing the contact area with the screen 312 and improving the screening efficiency; on the other hand, it allows the fine powder passing through the screen 312 to quickly converge along the inclined fine powder collecting plate 34, avoiding the accumulation of fine powder at the bottom of the main screen box 3 and ensuring the smooth collection of fine powder.

[0027] like Figure 1-3 As shown in Figure 5, the lower side wall of the independent sieve frame 311 has a first coarse powder outlet 3111; the side wall of the main sieve box 3 has a fine powder outlet 331 and a second coarse powder outlet 332 located above the fine powder outlet 331; a flexible sealing channel 35 is provided between the first coarse powder outlet 3111 and the second coarse powder outlet 332, allowing the first coarse powder outlet 3111 to allow coarse powder that has not passed through the sieve 312 to flow naturally to the outlet under the action of gravity and vibration; the arrangement of the fine powder outlet 331 and the second coarse powder outlet 332 realizes the classification and discharge of coarse and fine powders; the first coarse powder outlet is connected by the flexible sealing channel 35. The outlet 3111 and the second coarse powder outlet 332 not only ensure the sealing of the coarse powder conveying process to prevent dust leakage, but also adapt to the relative vibration between the independent screen frame 311 and the main screen box 3, avoiding damage to the flexible sealing channel 35 due to vibration. In view of the risk of powder adhesion and blockage that may exist in the flexible sealing channel itself, the periodic strong vibration generated by the main screen box 3 under the drive of the cam lifting mechanism 21 will be directly transmitted through its side wall to the second coarse powder outlet 332 that is fixedly connected to it, and further transmitted to the flexible sealing channel 35, causing the flexible channel wall to produce continuous micro-vibration. This shaking effectively breaks the adhesion between the powder and the pipe wall, and works synergistically with the inclined design of the channel to prevent coarse powder from lingering and accumulating in the flexible sealed channel 35, ensuring the continuity of coarse powder conveying. The flexible sealed channel 35 is always inclined downward from the connection with the first coarse powder outlet 3111 to the connection with the second coarse powder outlet 332. The flexible sealed channel 35 adopts a downward inclined design throughout, using gravity to drive the coarse powder to flow from the first coarse powder outlet 3111 of the independent screen frame 311 to the second coarse powder outlet 332 of the main screen box 3. No additional power is required, reducing equipment energy consumption, while avoiding coarse powder from lingering and accumulating in the flexible sealed channel 35, ensuring the continuity of coarse powder conveying. Both the fine powder outlet 331 and the second coarse powder outlet 332 are connected to a channel 36 inclined at 10-15°. This inclined channel 36 also benefits from the vibration transmitted from the main screen box 3, which can effectively prevent powder adhesion and blockage. The port of the channel 36 is connected to a sealed conical hopper 37. The bottom of the conical hopper 37 is connected to a material pipe 38 with a valve. The inclined channel 36 is used to guide coarse and fine powders into the conical hopper 37 quickly, avoiding material residue in the channel 36. The sealed conical hopper 37 can prevent external impurities from mixing into the screened material, while reducing dust diffusion and ensuring a clean working environment. The valve on the material pipe 38 can flexibly control the material discharge, which is convenient for subsequent quantitative collection or conveying of materials, improving the convenience and controllability of equipment operation.

[0028] like Figure 2 and 3 As shown, the flexible vibration isolator 32 has a ring structure. Its outer edge is fixedly connected to the mounting hole on the main screen box 3, and its inner edge is fixedly connected to the outer wall of the independent screen frame 311. The flexible vibration isolator 32 can realize the suspension support of the independent screen frame 311 in the main screen box 3, ensuring that the independent screen frame 311 is subjected to uniform force and has stronger stability during vibration. At the same time, the ring structure can effectively isolate the vibration transmission between the main screen box 3 and the independent screen frame 311, avoid mutual interference between their vibration frequencies, ensure that the vibration parameters of the screening mechanism 31 are accurate and controllable, and improve the screening accuracy.

[0029] like Figure 1-5 As shown, the cam lifting mechanism 21 includes a drive assembly 211 fixed outside the support cylinder 2, a rotating shaft 212 rotatably disposed inside the support cylinder 2 and driven by the drive assembly 211, a cam 213 symmetrically fixedly sleeved on the rotating shaft 212, a reciprocating rod 214 slidingly passing through the top of the support cylinder 2 and fixedly connected to the main screen box 3, a support 215 fixed to the bottom of the reciprocating rod 214, a rotating wheel 216 rotatably disposed inside the support 215 and rollingly engaged with the cam 213, and a spring 217 sleeved outside the reciprocating rod 214. The two ends of the spring 217 respectively abut against the support 215 and the upper wall of the support cylinder 2. The drive assembly 211 drives the rotating shaft 212. 2. The symmetrical cam 213 rotates, and the cam 213 pushes the support 215 and the reciprocating rod 214 upward through the rotating wheel 216, thereby lifting the main screen box 3. The spring 217 remains compressed during the rotation of the cam 213. On the one hand, during the non-lifting stage of the cam 213, it pulls the reciprocating rod 214 and the main screen box 3 to reset, ensuring the continuity of the periodic vibration of the main screen box 3. On the other hand, it buffers the impact force when the cam 213 lifts, reduces the wear of the mechanism, and extends the service life of the equipment. The design of the symmetrical cam 213 and the reciprocating rod 214 ensures that the main screen box 3 is balanced by force, avoids deviation during vibration, and ensures screening stability. The drive assembly 211 includes a drive motor 2111 and a reducer 2112 fixed to the outer wall of the support cylinder 2. The output shaft of the drive motor 2111 is connected to the input end of the reducer 2112. The output end of the reducer 2112 passes through the support cylinder 2 and is fixedly connected to the rotating shaft 212. The reducer 2112 adjusts the output speed of the drive motor 2111, so that the rotating shaft 212 and the cam 213 obtain a stable speed that meets the screening requirements, ensuring that the vibration frequency and amplitude of the main screen box 3 are accurately controllable and adaptable to the screening characteristics of calcium hydroxide fine powder. Fixing the drive motor 2111 and the reducer 2112 to the outer wall of the support cylinder 2 facilitates equipment installation and maintenance, while preventing the motor vibration from being directly transmitted to the inside of the support cylinder 2, thus ensuring the stability of the overall structure.

[0030] like Figure 1-3 As shown in Figure 5, the support cylinder 2, the main screen box 3, and the independent screen frame 311 are all circular. Multiple sets of limiting blocks 23 are evenly arranged on the outer circumference of the support cylinder 2. Multiple sets of L-shaped auxiliary limiting rods 39 are inserted into the main screen box 3 corresponding to the limiting blocks 23. The circular structure of the support cylinder 2, the main screen box 3, and the independent screen frame 311 makes the material more evenly stressed during the screening process, avoiding the problem of material accumulation at the corners of the square structure. The limiting blocks 23 evenly distributed on the outer circumference of the support cylinder 2 are inserted into and cooperate with the L-shaped auxiliary limiting rods 39 on the main screen box 3, which guides and limits the vertical vibration of the main screen box 3, preventing the main screen box 3 from horizontally shifting or twisting during vibration, ensuring that the main screen box 3 always moves along the preset trajectory, and improving the stability and safety of the equipment operation.

[0031] In practical use: 1. Power-on preparation and parameter settings Before operation, a comprehensive inspection of the equipment is required to ensure that the flexible sealing channel 35 is intact and undamaged, that the bottom valves of each conical hopper 37 are closed, and that the wiring connection between the ultrasonic generator 3131 and the transducer is reliable. Then, based on the target particle size of the calcium hydroxide powder to be screened, the output speed of the drive motor 2111 is set by adjusting the reducer 2112, thereby precisely controlling the vibration frequency and amplitude of the cam lifting mechanism 21. After setting, the drive motor 2111 and the ultrasonic generator 3131 are started sequentially. At this time, the main screen box 3 begins to vibrate periodically up and down under the drive of the cam lifting mechanism 21, while the independent screen frame 311 remains suspended and stable under the action of the flexible vibration isolator 32. Simultaneously, the ultrasonic transducer 3132 begins to transmit high-frequency vibrations to the screen 312. It is recommended to run the equipment unloaded for 1-2 minutes until all components are running smoothly before feeding.

[0032] 2. Material screening and automated sorting The calcium hydroxide material to be screened is fed evenly and continuously into the independent screen frame 311 inside the main screen box 3 through the feed pipe 11 of the top cover 1. The material undergoes two core processes on the screen 312: first, the strong mechanical vibration generated by the cam lifting mechanism 21 causes the material to be fully scattered, spread, and move forward; second, the high-frequency vibration generated by the ultrasonic transducer 3132 can instantly break up fine powder clumps and effectively prevent the screen 312 from clogging.

[0033] Under this combined vibration, qualified fine powder quickly passes through screen 312 and falls onto the inclined fine powder collecting plate 34 at the bottom of the main screen box 3. It then flows automatically to the fine powder outlet 331 by gravity, and subsequently enters the sealed fine powder conical hopper 37 via the inclined channel 36. Coarse powder that fails to pass through screen 312 is guided by vibration and the inclined angle of screen 312, moving to the first coarse powder outlet 3111 at the lower position of the independent screen frame 311. It is then conveyed through the downward-sloping flexible sealed channel 35 to the second coarse powder outlet 332 on the side wall of the main screen box 3, and finally enters the corresponding coarse powder conical hopper 37. The entire sorting process requires no additional power and is completed automatically entirely by gravity and vibration.

[0034] 3. Finished product collection and post-processing When the material accumulated in the conical hopper 37 reaches a certain amount, the valve at the bottom of the hopper can be opened to discharge the sorted fine powder and coarse powder through the feed pipe 38 into the designated collection containers. During operation, the discharge speed can be flexibly controlled by the valve to ensure smooth discharge and no accumulation.

[0035] After all screening operations are completed, feeding should be stopped first, and the equipment should continue to run for a period of time to ensure that all residual material in the device is completely discharged. Then, in sequence, turn off the ultrasonic generator 3131 first, followed by the drive motor 2111. After the equipment has completely stopped, clean the independent screen frame 311 and screen 312, removing any residual dust from the surface. Check key components such as the flexible vibration isolator 32 and the cam lifting mechanism 21 for any abnormalities. Once everything is confirmed to be in order, prepare for the next use.

[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A screening device for easily agglomerated calcium hydroxide fine powder, comprising a top cover (1), a support cylinder (2), and a main screen box (3), characterized in that: The top cover (1) covers the main screen box (3) and is fitted with a discharge pipe (11). The support cylinder (2) is equipped with a cam lifting mechanism (21). The main screen box (3) is connected to the support cylinder (2) through the cam lifting mechanism (21). The cam lifting mechanism (21) can periodically lift the main screen box (3) when rotating. The main screen box (3) is equipped with a screening mechanism (31); The screening mechanism (31) includes an independent screen frame (311) suspended inside the main screen box (3) by a flexible vibration isolator (32) and a screen (312) fixed on the independent screen frame (311). An ultrasonic generating component (313) is provided on both the independent sieve frame (311) and the support cylinder (2).

2. The screening device for easily agglomerated calcium hydroxide fine powder according to claim 1, characterized in that: The ultrasonic generating assembly (313) includes an ultrasonic generator (3131) and at least one ultrasonic transducer (3132) connected to the ultrasonic generator (3131) via a wire. The ultrasonic transducer (3132) is fixedly installed on the independent sieve frame (311); An L-shaped plate (22) is fixed to the outer wall of the support cylinder (2), and the ultrasonic generator (3131) is fixedly installed on the L-shaped plate (22).

3. The screening device for easily agglomerated calcium hydroxide fine powder according to claim 1, characterized in that: The bottom of the main sieve box (3) is provided with a fine powder collecting plate (34) that is inclined at 15-30°. The screen (312) is correspondingly inclined and installed on the independent screen frame (311); The feed pipe (11) is located above the high end of the screen (312).

4. The screening device for easily agglomerated calcium hydroxide fine powder according to claim 1, characterized in that: The lower side wall of the independent sieve frame (311) is provided with a first coarse powder outlet (3111). The main sieve box (3) has a fine powder outlet (331) and a second coarse powder outlet (332) located above the fine powder outlet (331) on its side wall. A flexible sealing channel (35) is provided between the first coarse powder outlet (3111) and the second coarse powder outlet (332).

5. A screening device for easily agglomerated calcium hydroxide fine powder according to claim 4, characterized in that: The flexible sealing channel (35) remains inclined downward from its connection with the first coarse powder outlet (3111) to its connection with the second coarse powder outlet (332).

6. A screening device for easily agglomerated calcium hydroxide fine powder according to claim 4, characterized in that: The fine powder outlet (331) and the second coarse powder outlet (332) are both connected to a channel (36) inclined at 10-15°, and the port of the channel (36) is connected to a sealed conical hopper (37). The bottom of the conical hopper (37) is connected to a material pipe (38) with a valve.

7. A screening device for easily agglomerated calcium hydroxide fine powder according to claim 1, characterized in that: The flexible vibration isolator (32) is a ring structure, with its outer edge fixedly connected to the mounting hole opened on the main screen box (3), and its inner edge fixedly connected to the outer wall of the independent screen frame (311).

8. A screening device for easily agglomerated calcium hydroxide fine powder according to claim 1, characterized in that: The cam lifting mechanism (21) includes a drive assembly (211) fixed outside the support cylinder (2), a rotating shaft (212) rotatably disposed inside the support cylinder (2) and driven by the drive assembly (211), a cam (213) symmetrically fixedly sleeved on the rotating shaft (212), a reciprocating rod (214) slidingly passing through the top of the support cylinder (2) and fixedly connected to the main screen box (3), a support (215) fixed at the bottom of the reciprocating rod (214), a rotating wheel (216) rotatably disposed inside the support (215) and rollingly cooperating with the cam (213), and a spring (217) sleeved outside the reciprocating rod (214). The two ends of the spring (217) respectively abut against the support (215) and the upper wall of the support cylinder (2).

9. A screening device for easily agglomerated calcium hydroxide fine powder according to claim 8, characterized in that: The drive assembly (211) includes a drive motor (2111) and a reducer (2112) fixed to the outer wall of the support cylinder (2). The output shaft of the drive motor (2111) is connected to the input end of the reducer (2112), and the output end of the reducer (2112) passes through the support cylinder (2) and is fixedly connected to the rotating shaft (212).

10. A screening device for easily agglomerated calcium hydroxide fine powder according to claim 1, characterized in that: The support cylinder (2), the main screen box (3), and the independent screen frame (311) are all circular; Multiple sets of limiting blocks (23) are evenly arranged on the outer circumference of the support cylinder (2); The main screen box (3) is provided with multiple sets of L-shaped auxiliary limiting rods (39) that are inserted into the limiting plug (23).

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