An unpowered sieving device for sodium sulfate production

Abstract

The utility model discloses a kind of anhydrous sodium sulfate production unpowered sieving devices, including shell, the shell top is provided with the feed inlet being communicated with its interior, at least two groups of coarse sieve surface and a group of fine sieve surface are arranged in the shell interior, wherein two groups of coarse sieve surface are arranged below feed inlet, and mutually parallel, while the low end below each group of coarse sieve surface is communicated with the coarse particle discharge port being arranged in the shell outer side, the fine sieve surface is below two groups of coarse sieve surface, and the low end below this fine sieve surface is communicated with the fine particle discharge port being arranged in the shell outer side;The utility model is simple structure, without motor, power components such as transmission device, greatly reduce cost and maintenance time.

Description

Technical Field

[0001] This utility model belongs to the technical field of sieving devices, specifically a non-powered sieving device for the production of sodium sulfate. Background Technology

[0002] Currently, the dried sodium sulfate granules are passed through a circular vibrating screen. The circular vibrating screen is driven by a motor to rotate an eccentric block at high speed, generating three-dimensional vibrations in the vertical, horizontal and inclined directions. This composite vibration gives the sodium sulfate granules on the screen surface continuous kinetic energy, and the granules form a uniform material layer above the screen surface. As the vibration moves towards the edge of the screen, the granules of different sizes are stratified due to the difference in force during the process - the finer granules are affected by the vibration and pass through the screen mesh faster, while the coarser granules continue to move forward on the screen surface. However, due to the complex structure of the equipment, it requires frequent maintenance and consumes electricity, resulting in high long-term operating costs. The power unit also generates noise and vibration during operation, creating a harsh production environment. Therefore, this screening device achieves powerless screening by setting the material discharge height difference, the screen surface inclination angle, the screen surface elasticity, the inverted cone hole screen surface, and the discharge port enlargement design. This reduces operating costs, saving approximately 1 million yuan in labor and electricity costs annually. In addition, the equipment has a simple design, is easy to maintain, is less prone to mechanical failures, has a long service life, and avoids electrical failures, mechanical damage, and other safety hazards due to the absence of a motor, resulting in low operational risks. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides a non-powered sieving device for sodium sulfate production.

[0004] The technical solution of this utility model to solve the above technical problems is: a non-powered sieving device for producing sodium sulfate, including a shell, with a feed inlet connected to the top of the shell, and at least two sets of coarse screens and one set of fine screens inclinedly arranged inside the shell. The two sets of coarse screens are arranged below the feed inlet and are parallel to each other. At the same time, the lower end of each set of coarse screens is connected to a coarse particle discharge port arranged on the outside of the shell. The fine screen is located below the two sets of coarse screens, and the lower end of the fine screen is connected to a fine particle discharge port arranged on the outside of the shell.

[0005] The present invention further specifies the following: Preferably, both sides of the coarse screen surface and the fine screen surface are fixedly connected to the inner wall of the housing by springs. Each side of the spring is provided with a hook, one end of which is fixedly connected to a fixing hole provided on one side of the coarse screen surface or the fine screen surface, and the other end of which is fixedly connected to a fixing hole provided on the inner wall of the housing.

[0006] Preferably, the inclination angle between the coarse screen surface and the fine screen surface and the inner wall of the shell is 15-20°.

[0007] Preferably, the sieve holes on both the coarse and fine sieve surfaces are inverted conical holes.

[0008] Preferably, the inverted conical hole is covered with round holes, which are distributed with smaller holes at the top and larger holes at the bottom to reduce particle blockage.

[0009] Preferably, the coarse particle discharge port and the fine particle discharge port are located on both sides of the shell.

[0010] Preferably, an observation port is provided at the top of the housing.

[0011] The beneficial effects of this invention are: This utility model eliminates the need for power components such as motors and transmission devices, greatly reducing costs and maintenance time. At the same time, the equipment has a simple structure, is easy to maintain, is not prone to mechanical failures, has a long service life, and avoids safety hazards such as electrical faults and mechanical damage by operating without a motor, resulting in low operational risks. In this invention, both the coarse and fine sieves are fixedly connected to the inner wall of the shell by springs. The falling gravity combined with the spring force causes the sodium sulfate to disperse and shake as it passes through the sieve. The inclination angle of the coarse and fine sieves is 15~20°, which allows the sodium sulfate to be evenly dispersed and slide, making full contact with the sieve surface. At the same time, the sieve holes on the coarse and fine sieves are designed with inverted conical holes, which are filled with round holes and have a design that is smaller at the top and larger at the bottom, reducing particle blockage. In addition, each layer of sieve surface is provided with a corresponding discharge port at the bottom, which can avoid the feeding area of ​​the lower layer of sieve surface and prevent coarse material from directly clogging the lower layer of sieve holes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the inverted conical hole in this utility model. Detailed Implementation Example 1

[0013] This embodiment provides a non-powered sieving device for sodium sulfate production, such as... Figure 1-2 As shown, the device includes a housing 1, with a feed inlet 2 connected to the inside of the housing at the top and an observation port 3 at the top. Inside the housing, two sets of coarse screens 4 and one set of fine screens 5 are inclined at an angle of 20°. The two sets of coarse screens are located below the feed inlet and are parallel to each other. The lower end of each set of coarse screens is connected to a coarse particle discharge port 6 located on the outside of the housing. The fine screen is located below the two sets of coarse screens, and the lower end of the fine screen is connected to a fine particle discharge port 7 located on the outside of the housing. The coarse particle discharge port and the fine particle discharge port are located on the two sides of the housing, respectively. Both sides of the coarse screen and the fine screen are fixedly connected to the inner wall of the housing by springs 8. Hooks are provided on both sides of the springs. One end of the hook is fixedly connected to the fixing hole provided on one side of the coarse screen or the fine screen, and the other end of the hook is fixedly connected to the fixing hole provided on the inner wall of the housing. The screen holes on the coarse screen and the fine screen are all inverted conical holes, and the inverted conical holes are covered with round holes. The size of the round holes is distributed with smaller holes at the top and larger holes at the bottom.

[0014] In this embodiment, after the sodium sulfate is dried in a fluidized bed, the material is in a loose state. It falls onto the coarse screen surface by gravity through a height difference of 1.5m. Both the coarse and fine screen surfaces are fixed to the inner wall of the shell by springs. The falling gravity plus the spring force causes the sodium sulfate to disperse and shake as it passes through the screen. The inclination angle of the coarse and fine screen surfaces is 15~20°, which allows the sodium sulfate to be evenly dispersed and slide, and to make full contact with the screen surface. At the same time, the screen holes on the coarse and fine screen surfaces are designed with inverted conical holes. The inverted conical holes are filled with round holes and are designed with smaller holes at the top and larger holes at the bottom to reduce particle blockage. In addition, each screen surface has a corresponding discharge port at the bottom, which can avoid the feeding area of ​​the lower screen surface and prevent coarse material from directly clogging the lower screen holes.

[0015] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A sodium sulfate production unpowered sieving device, comprising a housing, characterized in that, The top of the shell is provided with a feed inlet that communicates with its interior. Inside the shell, at least two sets of coarse screens and one set of fine screens are arranged at an incline. The two sets of coarse screens are located below the feed inlet and are parallel to each other. The lower end of each set of coarse screens is connected to a coarse particle discharge port located on the outside of the shell. The fine screen is located below the two sets of coarse screens, and the lower end of the fine screen is connected to a fine particle discharge port located on the outside of the shell.

2. The device according to claim 1, characterized in that: Both sides of the coarse screen surface and the fine screen surface are fixedly connected to the inner wall of the housing by springs. Each side of the spring is provided with a hook, one end of which is fixedly connected to a fixing hole provided on one side of the coarse screen surface or the fine screen surface, and the other end of which is fixedly connected to a fixing hole provided on the inner wall of the housing.

3. The device according to claim 1, wherein the device is characterized by: The inclination angle between the coarse and fine screen surfaces and the inner wall of the shell is 15-20°.

4. The device according to claim 3, wherein the device is characterized by: The sieve holes on both the coarse and fine sieve surfaces are inverted conical shapes.

5. The device according to claim 4, wherein the device is characterized by: The inverted conical hole is covered with circular holes, which are distributed in a manner that is smaller at the top and larger at the bottom.

6. The device according to claim 1, wherein the device is a device for producing an unpowered sieving of sodium carbonate. The coarse particle feed port and the fine particle feed port are located on both sides of the shell.

7. The non-powered sieving device for sodium sulfate production according to claim 1, characterized in that: An observation port is provided on the top of the housing.

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