Multi-stage screening device for chemical raw materials

Abstract

The utility model belongs to the technical field of screening equipment, and discloses a chemical raw material multi-stage screening device which comprises a screening barrel and supporting legs, a plurality of sets of bearing blocks are symmetrically installed on the inner surface of the screening barrel, and screening boxes are slidably connected between the bearing blocks. The screening box used for screening can be connected with the bearing block through the inserting rods, only the inserting rods need to be pulled out when follow-up maintenance and disassembly are needed, the maintenance and installation difficulty can be effectively lowered, more labor-saving use is facilitated, meanwhile, the screening nets in the screening box are independently arranged in a partitioned mode, and the screening efficiency is improved. When the screen mesh is damaged, only the screen mesh in the corresponding area needs to be replaced, the surrounding intact screen mesh is not affected, the loss during maintenance can be effectively reduced, better use is facilitated, and the screen mesh has the advantages of being convenient to maintain and small in replacement loss of the screen mesh.

Description

Technical Field

[0001] This application relates to the field of screening equipment technology, and more specifically, to a multi-stage screening device for chemical raw materials. Background Technology

[0002] Organic chemistry, also known as the chemistry of carbon compounds, is the science that studies the composition, structure, properties, preparation methods, and applications of organic compounds. It is a very important branch of chemistry. The production of organic chemical raw materials requires many processes, one of which is screening. Screening devices are used to screen organic chemical raw materials to achieve a suitable particle size.

[0003] A search of existing public technologies revealed a chemical experimental raw material sieving device with application number CN202320693693.1. This device features a convenient replacement mechanism that allows for easy replacement of the sieve screen. Operators do not need to disassemble the sieve screen through its holes during replacement, thus avoiding damage and ensuring its reuse, thereby increasing convenience.

[0004] However, the aforementioned patents still have certain drawbacks in use: they can only perform a single screening operation. If more detailed screening is required later, the screen needs to be frequently loaded and unloaded, increasing the labor intensity of personnel. At the same time, if the material clumps together, the screen is prone to clogging, making it difficult to discharge the material and greatly reducing the screening efficiency and effect. Furthermore, most of the screens are integrally molded structures, so if a part is damaged, the entire screen needs to be replaced, increasing unnecessary losses. The replacement of the screen is also quite cumbersome, and the overall effect of use is not ideal.

[0005] To address the aforementioned problems, this application provides a multi-stage screening device for chemical raw materials. Utility Model Content

[0006] The multi-stage screening device for chemical raw materials provided in this application adopts the following technical solution:

[0007] A multi-stage screening device for chemical raw materials includes a screening cylinder and supporting legs. Several sets of bearing blocks are symmetrically installed on the inner surface of the screening cylinder. Screening boxes are slidably connected between the bearing blocks. Several sets of positioning holes are symmetrically opened on the top of both sides of the screening box. Insert rods are inserted into the positioning holes. One end of the insert rod passes through one side of the bearing block. A spring is sleeved on the outer periphery of the insert rod, and the two ends of the spring are fixed to the bottom of the top surface of the insert rod and the top surface of the bearing block, respectively. Several sets of connecting plates are provided inside the screening box, and several sets of screens are threadedly connected between the connecting plates.

[0008] The above technical solution allows for adjustments to the number and structure of screens according to requirements, facilitating targeted replacement and maintenance by subsequent personnel.

[0009] Furthermore, a drive shaft is installed in the middle of the screening cylinder. One end of the drive shaft passes through one side of the screening cylinder and is connected to a motor. Several sets of fixing plates are installed around the surface of the drive shaft above the screening box. A scraper is fixedly installed at the bottom of the surface of the fixing plate, and the bottom of the scraper is in contact with the top of the screen.

[0010] The scraper, as described above, is designed to sift the raw materials by pushing them.

[0011] Furthermore, several sets of striking rods are mounted around the surface of the drive shaft above the fixing plate, and the outer periphery of the striking rods is covered with soft pads.

[0012] The striking rod, as described above, is designed to break up agglomerated raw material particles through contact, thereby dispersing the raw material and facilitating more thorough screening. The soft pad is designed to prevent excessive crushing due to direct contact with the metal structure, which would result in incomplete particles.

[0013] Furthermore, a collection box is installed at the bottom of the inside of the screening cylinder.

[0014] The collection box, as described above, is designed to collect the smallest particles of raw material that have been screened out, facilitating subsequent processing. The chemical materials remaining inside the screening box can be collected by personnel later.

[0015] Furthermore, several sets of support legs are symmetrically installed on both sides of the bottom of the screening cylinder.

[0016] The above technical solution allows the device to be fixed in place by the support legs, which enhances the overall stability of the device during use.

[0017] Furthermore, a feed inlet is provided at the middle position of the top of the screening cylinder.

[0018] The above technical solution includes a feed inlet to facilitate the addition of chemical raw materials to be processed.

[0019] Furthermore, the aperture size of the screen surface gradually decreases.

[0020] The above technical solution allows for a more precise sieving process by varying the aperture size of the screen surface, thereby separating particles of different sizes from the chemical raw materials for easier subsequent processing.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] 1. This application utilizes a plug rod, screening box, and screen. During use, the screening box is connected to the support block via the plug rod. Subsequent maintenance and disassembly only require pulling out the plug rod, effectively reducing maintenance and installation difficulty and facilitating easier use. Furthermore, the screens inside the screening box are independently partitioned, meaning that in case of damage, only the corresponding screen needs replacement, preventing damage to surrounding intact screens. This effectively reduces maintenance losses and facilitates better use, offering advantages such as convenient maintenance and minimal screen replacement losses.

[0023] 2. This application utilizes a screening box, scraper, and impact rod. After the chemical raw materials are added, the falling chemical raw materials are dispersed by the rotation of the impact rod, preventing clumping of the sieve holes and ensuring thorough screening. The dispersed raw materials then fall into the screening box, where the continuous rotation of the scraper drives the material to be screened by the sieve. The screened material can then fall into the screening box below for secondary or even multiple screenings. This multi-stage screening process effectively improves the overall screening quality. The falling material is further dispersed by impact, ensuring particle looseness and preventing clumping. This ensures thorough screening and improves overall screening quality, making it easier to use and providing excellent screening results. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the screen in this application;

[0026] Figure 3 This is a schematic diagram of the internal structure of the screening box in this application;

[0027] Figure 4 This is a schematic diagram showing the connection between the drive shaft and the striking rod in this application.

[0028] Explanation of the labels in the diagram:

[0029] 1. Screening cylinder; 2. Impact rod; 3. Feed inlet; 4. Drive shaft; 5. Fixing plate; 6. Scraper; 7. Bearing block; 8. Insert rod; 9. Screening box; 10. Spring; 11. Screen; 12. Support leg; 13. Collection box; 14. Connecting plate; 15. Motor; 16. Positioning hole. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Example:

[0034] This application discloses a multi-stage screening device for chemical raw materials. Please refer to the embodiments therein. Figure 1-3 The system includes a screening cylinder 1 and support legs 12. Several sets of bearing blocks 7 are symmetrically installed on the inner surface of the screening cylinder 1. Screening boxes 9 are slidably connected between the bearing blocks 7. Several sets of positioning holes 16 are symmetrically opened on the top of both sides of the screening box 9. Insert rods 8 are inserted into the positioning holes 16. One end of the insert rod 8 passes through one side of the bearing block 7. Springs 10 are sleeved on the outer periphery of the insert rod 8. The two ends of the springs 10 are fixed to the bottom of the top surface of the insert rod 8 and the top surface of the bearing block 7, respectively. Several sets of connecting plates 14 are provided inside the screening box 9. Several sets of screens 11 are threadedly connected between the connecting plates 14. The number and structure of the screens 11 can be adjusted according to the needs to facilitate subsequent targeted replacement and maintenance by personnel.

[0035] Please see Figure 1A drive shaft 4 is installed in the middle of the screening cylinder 1. One end of the drive shaft 4 passes through one side of the screening cylinder 1 and is connected to the motor 15. Several sets of fixing plates 5 are installed around the surface of the drive shaft 4 above the screening box 9. A scraper 6 is fixedly installed at the bottom of the surface of the fixing plate 5. The bottom of the scraper 6 contacts the top of the screen 11. The scraper 6 is set to achieve the screening operation of the raw material by pushing the raw material.

[0036] Please see Figure 1 and Figure 4 Several sets of striking rods 2 are mounted around the surface of the drive shaft 4 above the fixed plate 5. The striking rods 2 are covered with soft pads. The striking rods 2 are designed to break up the agglomerated raw material particles by contact, thereby dispersing the raw material and facilitating more thorough screening. The soft pads are designed to prevent excessive crushing due to direct contact with the metal structure, which would result in incomplete particles.

[0037] Please see Figure 1 A collection box 13 is installed at the bottom of the screening cylinder 1. The collection box 13 is set up to collect the smallest particles of raw material that have been screened out, so as to facilitate subsequent processing. The chemical raw materials remaining inside the screening box 9 can be collected by personnel later.

[0038] Please see Figure 1 Several sets of support legs 12 are symmetrically installed on both sides of the bottom of the screening cylinder 1. The support legs 12 can fix the whole device, which can enhance the overall stability of the device.

[0039] Please see Figure 1 The top center of the screening cylinder 1 is provided with a feed inlet 3. The feed inlet 3 is provided to facilitate the addition of chemical raw materials to be processed by personnel.

[0040] Please see Figure 1 and Figure 2 The aperture size of the screen 11 gradually decreases. This change in aperture size is for more precise screening, which separates particles of different sizes from the chemical raw materials, making it easier for personnel to process them later.

[0041] The implementation principle of this embodiment is as follows: During use, personnel can add the chemical raw materials that need to be screened. At this time, the falling chemical raw materials, through the rotation of the striking rod 2, can disperse the agglomerated solid particles, thereby preventing particle clumping and subsequent clogging of the screen holes, thus ensuring that the raw materials can be fully screened. Then, the dispersed raw materials will fall into the screening box 9. Through the continuous rotation of the scraper 6 in the screening box 9, the raw materials inside can be continuously pushed, and then screened by the screen 11 during the pushing process. The screened raw materials can continue to fall into the screening box 9 below for secondary or even multiple screenings. Through multiple screening operations, the overall screening quality can be effectively improved, and the particles can be further dispersed by impact during the fall, thereby ensuring the looseness of the particles and preventing agglomeration. When in use, a soft pad can be wrapped around the outer periphery of the striking rod 2 and the rotation speed can be controlled. This can prevent excessive force during impact from causing particle breakage, thus ensuring the integrity of the chemical raw material particles and facilitating better subsequent use. Moreover, the screening box 9 used for screening can be connected to the support block 7 through the insertion rod 8. When maintenance or disassembly is required, simply pull out the insertion rod 8, which can effectively reduce the difficulty of maintenance and installation and facilitate more labor-saving use. At the same time, the screens 11 inside the screening box 9 are also set in independent sections. In this way, when damage occurs, only the corresponding area of ​​screen 11 needs to be replaced, without affecting the surrounding intact screens 11, which can effectively reduce maintenance losses and facilitate better use. The device as a whole has the advantages of convenient maintenance, low screen 11 replacement losses, and good screening effect.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-stage screening device for chemical raw materials, comprising a screening cylinder (1) and supporting legs (12), characterized in that: Several sets of bearing blocks (7) are symmetrically installed on the inner surface of the screening cylinder (1). A screening box (9) is slidably connected between the bearing blocks (7). Several sets of positioning holes (16) are symmetrically opened on the top of both sides of the screening box (9). A rod (8) is inserted into the positioning hole (16). One end of the rod (8) passes through one side of the bearing block (7). A spring (10) is sleeved on the outer periphery of the rod (8). The two ends of the spring (10) are fixed to the bottom of the top surface of the rod (8) and the top surface of the bearing block (7), respectively. Several sets of connecting plates (14) are provided inside the screening box (9). Several sets of screens (11) are threaded between the connecting plates (14).

2. The multi-stage screening device for chemical raw materials according to claim 1, characterized in that: A drive shaft (4) is installed in the middle of the screening cylinder (1). One end of the drive shaft (4) passes through one side of the screening cylinder (1) and is connected to the motor (15). Several sets of fixing plates (5) are installed around the surface of the drive shaft (4) above the screening box (9). A scraper (6) is fixedly installed at the bottom of the surface of the fixing plate (5). The bottom of the scraper (6) is in contact with the top of the screen (11).

3. The multi-stage screening device for chemical raw materials according to claim 2, characterized in that: Several sets of striking rods (2) are mounted around the surface of the drive shaft (4) above the fixed plate (5), and the striking rods (2) are wrapped with soft pads.

4. The multi-stage screening device for chemical raw materials according to claim 1, characterized in that: A collection box (13) is installed at the bottom of the inside of the screening cylinder (1).

5. The multi-stage screening device for chemical raw materials according to claim 1, characterized in that: Several sets of support legs (12) are symmetrically installed on both sides of the bottom of the screening cylinder (1).

6. The multi-stage screening device for chemical raw materials according to claim 1, characterized in that: The screening cylinder (1) has a feed inlet (3) at the middle of the top.

7. The multi-stage screening device for chemical raw materials according to claim 1, characterized in that: The pore size on the surface of the screen (11) gradually decreases.

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