Low-noise type cement fineness efficient vibration screening machine

Abstract

The utility model discloses a low-noise type cement fineness efficient vibration screening machine, and relates to the technical field of vibration screening machines. Comprising a screening box, a feeding cylinder is fixedly arranged at the top of the screening box, a first motor is fixedly arranged at the top of the feeding cylinder, a stirring shaft is fixedly arranged on an output shaft of the first motor, stirring rods are fixedly arranged on the two sides of the stirring shaft, and fixing rods are fixedly arranged in the middles of the two sides of the stirring shaft; grooves are formed in the ends, away from the stirring shaft, of the fixing rods, and connecting pieces are movably arranged in the grooves. By arranging the fixing rod, the connecting piece and the scraping plate, the scraping plate scrapes off cement residues on the inner wall of the feeding cylinder in real time along with rotation of the stirring rod, long-time attachment and accumulation of cement are effectively avoided, resource waste is reduced, smooth cement feeding is guaranteed, and the cement feeding efficiency is improved. And the risk that cement residues fall off in the stirring process and are mixed into screened cement is reduced, and therefore the accuracy of the screening result is improved.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically a low-noise, high-efficiency cement fineness vibrating screen. Background Technology

[0002] The high-efficiency vibrating screen for cement fineness is a mechanical device that uses vibration to screen materials. It mainly consists of a screen body, screen mesh, vibrating motor, damping springs, and support frame. The vibration force generated by the vibrating motor causes the screen body to vibrate at high frequency, thereby causing the material to be screened on the screen surface, achieving grading or removing impurities.

[0003] Chinese utility model patent CN221311377U discloses a cement fineness screening device for engineering testing. Addressing the issue that in traditional cement screening, the entire equipment is exposed, easily generating dust and polluting the environment. Furthermore, the raw materials cannot be processed, and cement tends to clump when damp, affecting screening if left untreated. The proposed solution includes a screening box with a feed cylinder fixedly connected to its top. The bottom of the feed cylinder extends into the screening box, and a discharge pipe is fixedly connected to its bottom. A solenoid valve is installed on the discharge pipe. An electric push rod is fixedly connected to one side of the screening box. This utility model stirs the cement before screening, breaking up clumps and preventing blockages during feeding. It also adsorbs and treats the generated dust, preventing it from dispersing into the air and polluting the environment.

[0004] To break up the cement, the aforementioned cement fineness screening device for engineering testing is equipped with a stirring shaft and stirring rod inside the feed cylinder. However, this device lacks the function of cleaning the inner wall of the feed cylinder. During long-term use, cement may gradually accumulate and remain on the inner wall of the feed cylinder. These residues not only reduce the volume of the feed cylinder, affecting the cement feeding and mixing effect, but may also fall off with the rotation of the stirring shaft and stirring rod, mixing into the cement being screened. This leads to a decrease in the accuracy of the screening results and affects the precision of cement fineness testing. Utility Model Content

[0005] This invention provides a low-noise, high-efficiency cement fineness vibrating screen to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-noise, high-efficiency cement fineness vibrating screen, comprising a screening box, a feeding cylinder fixedly mounted on the top of the screening box, a first motor fixedly mounted on the top of the feeding cylinder, a stirring shaft fixedly mounted on the output shaft of the first motor, stirring rods fixedly mounted on both sides of the stirring shaft, and a fixing rod fixedly mounted in the middle of both sides of the stirring shaft, a groove being formed at the end of each fixing rod away from the stirring shaft, and a connecting member being movably mounted in the groove, a scraper being fixedly mounted at one end of the connecting member, a first bolt being movably mounted inside the connecting member, and a sealing door movably mounted on the front of the feeding cylinder, with openings at all four corners of the sealing door. The screen has a screw hole with a second bolt movably installed inside. A handle is fixedly installed in the middle of the front of the sealing door. A second motor is fixedly installed at the bottom of one side of the screening box. A rotating shaft is fixedly installed on the output shaft of the second motor. Cams are fixedly installed on both sides of the outer wall of the rotating shaft. A fixed plate is installed above the cams. Movable blocks are fixedly installed on both sides of the fixed plate. The movable blocks are slidably connected to the screening box. A return spring is fixedly installed at the bottom of the movable blocks. A fixed frame is fixedly installed at the top of the fixed plate. A collection box is movably installed on the inner wall of the fixed frame. A first screen frame is installed above the collection box. A second screen frame is installed above the first screen frame.

[0007] Furthermore, the stirring rods are uniformly arranged along the axial direction of the stirring shaft.

[0008] Furthermore, the aperture diameter of the first sieve frame is smaller than that of the second sieve frame.

[0009] Furthermore, casters are fixedly installed at the four corners of the bottom of the screening box.

[0010] Furthermore, a sound insulation layer is fixedly provided on the inner wall of the screening box, and the material of the sound insulation layer is glass wool.

[0011] Furthermore, a discharge pipe is fixedly installed at the bottom of the feed cylinder.

[0012] Compared with the prior art, this utility model provides a low-noise, high-efficiency cement fineness vibrating screen, which has the following advantages:

[0013] 1. This low-noise, high-efficiency cement fineness vibrating screen, equipped with a fixed rod, connecting parts, scraper, first bolt, sealing door, second bolt, and handle, uses the scraper to scrape away cement residue on the inner wall of the feed cylinder in real time as the mixing rod rotates. This not only effectively avoids long-term cement adhesion and accumulation, reducing resource waste and ensuring smooth cement feeding, but also reduces the risk of cement residue falling off during mixing and mixing into the screened cement, thereby improving the accuracy of the screening results. When replacing the scraper, tighten the second bolt to release the restriction on the sealing door, pull the handle to remove the sealing door, and then tighten the first bolt until it is completely separated from the connecting parts to pull out the scraper, thus achieving scraper disassembly. Installation is similar, making operation simple and allowing workers to replace worn scrapers in a timely manner, which helps to improve the scraping efficiency and effect of the scraper.

[0014] 2. This low-noise, high-efficiency cement fineness vibrating screen is equipped with casters and a sound insulation layer. The casters allow workers to move the device, greatly improving their convenience and work efficiency. The sound insulation layer effectively absorbs the vibration noise generated during operation, achieving noise reduction, improving the working environment and comfort of the workers. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view of the structure of this utility model;

[0017] Figure 3 This is an enlarged structural diagram of part A of this utility model;

[0018] Figure 4 This is an enlarged structural diagram of part B of this utility model.

[0019] In the diagram: 1. Screening box; 201. Feed cylinder; 202. First motor; 203. Stirring shaft; 204. Stirring rod; 205. Fixing rod; 206. Connecting piece; 207. Scraper; 208. First bolt; 209. Sealing door; 210. Second bolt; 211. Handle; 301. Second motor; 302. Rotating shaft; 303. Cam; 304. Fixing plate; 305. Movable block; 306. Return spring; 307. Fixing frame; 308. Collection box; 309. First screen frame; 310. Second screen frame; 401. Caster wheel; 402. Sound insulation layer; 403. Discharge pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model discloses a low-noise, high-efficiency cement fineness vibrating screen, including a screening box 1. A feed cylinder 201 is fixedly mounted on the top of the screening box 1. A first motor 202 is fixedly mounted on the top of the feed cylinder 201. A stirring shaft 203 is fixedly mounted on the output shaft of the first motor 202. Stirring rods 204 are fixedly mounted on both sides of the stirring shaft 203. Fixing rods 205 are fixedly mounted in the middle of both sides of the stirring shaft 203. A groove is formed at the end of each fixing rod 205 away from the stirring shaft 203, and a connecting piece 206 is movably mounted within the groove. A scraper 207 is fixedly mounted at one end of the connecting piece 206. A first bolt 208 is movably mounted inside the connecting piece 206. A sealing door 209 is movably mounted on the front of the feed cylinder 201. Screw holes are formed at the four corners of the sealing door 209, and movably mounted within the screw holes... A second bolt 210 is provided. A handle 211 is fixedly installed in the middle of the front of the sealing door 209. A second motor 301 is fixedly installed at the bottom of one side of the screening box 1. A rotating shaft 302 is fixedly installed on the output shaft of the second motor 301. Cams 303 are fixedly installed on both sides of the outer wall of the rotating shaft 302. A fixed plate 304 is installed above the cams 303. Movable blocks 305 are fixedly installed on both sides of the fixed plate 304. The movable blocks 305 are slidably connected to the screening box 1. A return spring 306 is fixedly installed at the bottom of the movable blocks 305. A fixed frame 307 is fixedly installed on the top of the fixed plate 304. A collection box 308 is movably installed on the inner wall of the fixed frame 307. A first screen frame 309 is installed above the collection box 308. A second screen frame 310 is installed above the first screen frame 309.

[0022] Specifically, the stirring rods 204 are uniformly arranged along the axial direction of the stirring shaft 203.

[0023] In this embodiment, by setting up stirring rods 204, multiple evenly arranged stirring rods 204 can fully stir the raw materials in the feed cylinder 201, thereby improving the efficiency and effect of stirring.

[0024] Specifically, the aperture of the first sieve frame 309 is smaller than that of the second sieve frame 310.

[0025] In this embodiment, by setting a first sieve frame 309 and a second sieve frame 310, cement raw materials larger than the sieve aperture of the second sieve frame 310 will remain in the second sieve frame 310, cement raw materials smaller than or equal to the sieve aperture of the second sieve frame 310 will fall into the first sieve frame 309 through the sieve aperture, cement raw materials larger than the sieve aperture of the first sieve frame 309 will remain in the first sieve frame 309, and cement raw materials smaller than or equal to the sieve aperture of the first sieve frame 309 will fall into the collection box 308 through the sieve aperture, thereby screening out cement of different fineness.

[0026] Specifically, each of the four corners of the bottom of the screening box 1 is fixedly equipped with a caster wheel 401.

[0027] In this implementation scheme, by setting up casters 401, workers can easily move the device, which improves the comfort of workers and enhances the practicality of the device.

[0028] Specifically, the inner wall of the screening box 1 is fixedly provided with a sound insulation layer 402, and the material of the sound insulation layer 402 is glass wool.

[0029] In this embodiment, by setting a sound insulation layer 402, the glass wool is composed of fine fibers with many small pores inside, which can absorb the sound wave energy generated by the vibration of the fixing frame 307, reduce the propagation of sound, and achieve the effect of noise reduction of the device.

[0030] Specifically, a discharge pipe 403 is fixedly provided at the bottom of the feed cylinder 201.

[0031] In this embodiment, by setting up a discharge pipe 403, after the solenoid valve is opened, the stirred cement raw materials can enter the second screen frame 310 through the discharge pipe 403 to facilitate the screening of the cement raw materials.

[0032] In use, the operator moves the screening box 1 to the designated location using the casters 401, opens the cover plate on the feed cylinder 201, and introduces the cement raw material to be screened into the feed cylinder 201. Then, the cover plate is closed, and the first motor 202 is started. The output shaft of the first motor 202 drives the stirring rod 204 and the scraper 207 to rotate. While the stirring rod 204 stirs the cement raw material, the scraper 207 scrapes off the residue adhering to the inner wall of the feed cylinder 201. After processing, the solenoid valve is opened, and the cement raw material enters the second screen frame 310 through the discharge pipe 403. When the second motor 301 is started, the shaft 302 rotates along with the output shaft of the second motor 301, which in turn drives the cam 303 to rotate. During the rotation, the cam 303 continuously impacts the fixed plate 304, causing the movable block 305 to move up and down under the action of the return spring 306. As a result, the fixed frame 307 moves inside the screening box 1 and generates amplitude on the first screen frame 309 and the second screen frame 310, thereby screening the cement raw materials. The screen holes of the first screen frame 309 are smaller than the screen holes of the second screen frame 310, thus screening out cement of different fineness.

[0033] When the scraper 207 needs to be replaced, tighten the second bolt 210 to release the restriction on the sealing door 209, pull the handle 211 to remove the sealing door 209, and then tighten the first bolt 208 until the first bolt 208 is completely away from the connector 206. The scraper 207 can then be pulled out, thus achieving the disassembly of the scraper 207. After replacement, insert the connector 206 into the groove and tighten the first bolt 208 in the opposite direction to fix the scraper 207. Install the sealing door 209 and tighten the second bolt 210 in the opposite direction to complete the installation of the sealing door 209. This achieves quick disassembly and assembly of the scraper 207, providing convenience for workers and improving the scraping efficiency and effect of the scraper 207.

[0034] In summary, this low-noise, high-efficiency cement fineness vibrating screen, through the installation of a fixed rod 205, connecting piece 206, scraper 207, first bolt 208, sealing door 209, second bolt 210, and handle 211, allows the scraper 207 to scrape away cement residue on the inner wall of the feed cylinder 201 in real time as the mixing rod 204 rotates. This not only effectively avoids long-term cement adhesion and accumulation, reducing resource waste and ensuring smooth cement feeding, but also reduces the risk of cement residue falling off during mixing and mixing into the screened cement, thereby improving the accuracy of the screening results. When replacing the scraper 207, the second bolt 210 is turned to release the restriction on the sealing door 209, and then the handle 211 is pulled to remove the sealing door. 209. Then, tighten the first bolt 208 until it is completely separated from the connector 206, and the scraper 207 can be pulled out, thus achieving the disassembly of the scraper 207. The same applies to installation. The operation is simple, allowing the staff to replace the worn scraper 207 in a timely manner, which helps to improve the scraping efficiency and effect of the scraper 207. By setting the casters 401 and the sound insulation layer 402, the staff can use the casters 401 to move the device, which provides great convenience for the staff and improves work efficiency. The sound insulation layer 402 can effectively absorb the vibration noise generated during the operation of the device, achieve the noise reduction effect, improve the working environment of the staff, and improve the comfort of the staff.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-noise, high-efficiency cement fineness vibrating screen, comprising a screening box (1), characterized in that: A feed cylinder (201) is fixedly installed on the top of the screening box (1). A first motor (202) is fixedly installed on the top of the feed cylinder (201). A stirring shaft (203) is fixedly installed on the output shaft of the first motor (202). Stirring rods (204) are fixedly installed on both sides of the stirring shaft (203). A fixing rod (205) is fixedly installed in the middle of both sides of the stirring shaft (203). The fixing rods (205) are far away from the stirring shaft (204). 3) One end of each of the feed cylinders has a groove, and a connector (206) is movably installed in the groove. A scraper (207) is fixedly installed at one end of the connector (206). A first bolt (208) is movably installed inside the connector (206). A sealing door (209) is movably installed on the front of the feed cylinder (201). A screw hole is opened at each of the four corners of the sealing door (209), and a second bolt (210) is movably installed in the screw hole. A handle (211) is fixedly installed in the middle of the front side of the screening box (1). A second motor (301) is fixedly installed at the bottom of one side of the screening box (1). A rotating shaft (302) is fixedly installed on the output shaft of the second motor (301). Cams (303) are fixedly installed on both sides of the outer wall of the rotating shaft (302). A fixed plate (304) is installed above the cams (303). Movable blocks (305) are fixedly installed on both sides of the fixed plate (304). The connection between the movable blocks (305) and the screening box (1) is a sliding connection. A return spring (306) is fixedly installed at the bottom of the movable blocks (305). A fixed frame (307) is fixedly installed at the top of the fixed plate (304). A collection box (308) is movably installed on the inner wall of the fixed frame (307). A first screen frame (309) is installed above the collection box (308). A second screen frame (310) is installed above the first screen frame (309).

2. The low-noise, high-efficiency cement fineness vibrating screen according to claim 1, characterized in that: The stirring rod (204) is uniformly arranged along the axial direction of the stirring shaft (203).

3. The low-noise, high-efficiency cement fineness vibrating screen according to claim 1, characterized in that: The aperture of the first sieve frame (309) is smaller than that of the second sieve frame (310).

4. The low-noise, high-efficiency cement fineness vibrating screen according to claim 1, characterized in that: The four corners of the bottom of the screening box (1) are all fixed with casters (401).

5. The low-noise, high-efficiency cement fineness vibrating screen according to claim 1, characterized in that: The inner wall of the screening box (1) is fixedly provided with a sound insulation layer (402), and the material of the sound insulation layer (402) is glass wool.

6. The low-noise, high-efficiency cement fineness vibrating screen according to claim 1, characterized in that: The bottom of the feed cylinder (201) is fixedly provided with a discharge pipe (403).

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