Screening device for anhydrous sodium sulphate production

Abstract

The utility model is applicable to the technical field of anhydrous sodium sulphate production devices, and provides a screening device for anhydrous sodium sulphate production, which comprises a screening box, the screening box is of a telescopic structure, a screening assembly is mounted in the screening box, the screening assembly comprises a first screen, and the first screen is mounted in a lifting part in the screening box. The first screen mesh and the second screen mesh are arranged on the telescopic column and the spring, the driving shaft and the eccentric block are arranged between the first screen mesh and the second screen mesh, in the screening process, the motor drives the eccentric block to rotate through the driving shaft, the eccentric block can periodically extrude the first screen mesh and the second screen mesh, and the screening efficiency is improved. And meanwhile, the first screen and the second screen can vibrate at the same frequency by matching with resilience force of the telescopic columns and the springs, so that the vibration degrees of the first screen and the second screen are consistent, and the screening efficiency of the device can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sodium sulphate production devices, in particular to a screening device for sodium sulphate production. Background Art

[0002] Sodium sulfate is also known as sodium sulfate. The high-purity, fine-grained anhydrous substance is called sodium sulfate. Inorganic compound, also known as anhydrous sodium sulfate, sodium sulfate, white, odorless, bitter crystals or powder, hygroscopic. The appearance is colorless, transparent, large crystals or granular small crystals, and a screening device is needed to screen it during the production process of sodium sulfate.

[0003] The existing screening device for producing alum is used to screen the alum by vibrating screening. That is, a vibrator is installed on the outer wall of the device to drive the entire device to vibrate. In the screening process, due to the fixed installation position of the vibrator, the screen near the vibrator is subjected to a large vibration force, while the screen far from the vibrator is subjected to a small vibration force. As a result, different screens in the same device are subjected to inconsistent vibration degrees, which affects the screening rate of the device. Therefore, a screening device for producing alum is urgently needed to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a screening device for producing sodium sulphate, so as to solve the problem in the background technology that the vibration degree of the screen at different positions in the same device is inconsistent and the screening speed of the device is affected due to the fixed installation position of the vibrator.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] A screening device for producing sodium sulphate, comprising a screening box, the screening box being a telescopic structure, a screening assembly being installed in the screening box, the screening assembly comprising:

[0007] a first screen mesh installed inside the lifting part of the screening box;

[0008] a second screen, the second screen being mounted inside the fixed portion of the screening box;

[0009] A telescopic column, wherein the telescopic column is fixedly connected to the four corners of the first screen and the second screen; and a spring, wherein the spring is fixedly connected to the outer side wall of the telescopic column.

[0010] Furthermore, a driving mechanism is installed in the screening box, and the driving mechanism includes:

[0011] A motor, wherein the motor is fixedly connected to a side wall of the screening box;

[0012] A drive shaft, the drive shaft being rotatably disposed between the inner walls of the screening box and having one end fixedly connected to the motor output shaft;

[0013] The eccentric block is composed of two groups and is symmetrically fixed to the two ends of the driving shaft. One end surface of the eccentric block is an arc-shaped structure. The eccentric block can be in conflict with the first screen and the second screen.

[0014] Furthermore, a guide mechanism is provided in the screening box, and the guide mechanism comprises:

[0015] Guide grooves, which are symmetrically distributed on the inner walls of both sides of the screening box and are provided on both the lifting part and the fixing part;

[0016] A guide block is fixedly connected to both side walls of the first screen and the second screen.

[0017] Furthermore, the guiding mechanism further comprises:

[0018] A ball is rotatably disposed on a side wall of the guide block and contacts the guide groove.

[0019] Furthermore, a guide plate is installed below the second screen, and the guide plate is inclined and extends out of the screening box.

[0020] Furthermore, the screening box has built-in electric push rods, which consist of four groups and are distributed at the four corners of the screening box, and the output ends of the electric push rods are fixedly connected to the lifting part of the screening box.

[0021] Furthermore, the grade of the second sieve is higher than that of the first sieve.

[0022] Furthermore, an operation panel is installed on a side wall of the screening box adjacent to the motor, and the operation panel is electrically connected to the motor and the electric push rod.

[0023] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0024] The utility model arranges the first screen and the second screen on a telescopic column and a spring, and arranges a driving shaft and an eccentric block between the first screen and the second screen. During the screening process, the motor drives the eccentric block to rotate through the driving shaft, so that the eccentric block can periodically squeeze the first screen and the second screen. At the same time, the first screen and the second screen can be vibrated at the same frequency at the same time with the rebound force of the telescopic column and the spring, thereby ensuring that the vibration degrees of the two are consistent, which can effectively improve the screening efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic diagram of the three-dimensional structure of a screening device for producing sodium sulphate provided by an embodiment of the utility model;

[0026] Figure 2 This is a left view of the three-dimensional structure of a screening device for producing sodium sulphate provided by an embodiment of the utility model;

[0027] Figure 3 This is a three-dimensional structural diagram of a screening device for producing sodium sulfate provided by an embodiment of the utility model (after the screening box lifting part is lifted up);

[0028] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0029] Figure 5 It is a structural schematic diagram of a screening mechanism in a screening device for producing sodium sulphate provided in an embodiment of the utility model;

[0030] Figure 6 The utility model is provided in an embodiment of the present invention, which is a schematic diagram of the structure of a driving shaft and an eccentric block in a screening device for producing sodium sulphate.

[0031] The reference numerals in the figures are:

[0032] 1. Screening box; 2. Screening assembly; 201. First screen; 202. Telescopic column; 203. Spring; 204. Second screen; 3. Guide mechanism; 301. Guide groove; 302. Guide block; 303. Ball; 4. Driving mechanism; 401. Motor; 402. Driving shaft; 403. Eccentric block; 5. Operation panel; 6. Guide plate; 7. Electric push rod. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] like Figure 1-6 As shown, a screening device for producing sodium sulphate includes a screening box 1, the screening box 1 has a telescopic structure, a screening assembly 2 is installed in the screening box 1, and the screening assembly 2 includes: a first screen 201, the first screen 201 is installed inside the lifting part of the screening box 1; a second screen 204, the second screen 204 is installed inside the fixed part of the screening box 1; a telescopic column 202, the telescopic column 202 is fixedly connected to the four corners of the first screen 201 and the second screen 204; a spring 203, the spring 203 is fixedly connected to the outer wall of the telescopic column 202.

[0035] The specific operations are as follows:

[0036] During the screening process, the first sieve 201 performs coarse filtration on the alum, and the second sieve 204 performs fine filtration on the alum, and the telescopic column 202 combined with the spring 203 can compress the first sieve 201 and the second sieve 204 when they are squeezed, and when the squeezing force disappears, the two are reset, thereby driving the two to vibrate and accelerating the screening rate.

[0037] As an embodiment, a driving mechanism 4 is installed in the screening box 1, and the driving mechanism 4 includes: a motor 401, which is fixedly connected to a side wall of the screening box 1; a driving shaft 402, which is rotatably arranged between the inner walls of the screening box 1 and one end of which is fixedly connected to the output shaft of the motor 401; an eccentric block 403, which consists of two groups and is symmetrically fixedly connected to both ends of the driving shaft 402, and one end face of the eccentric block 403 is an arc structure, and the eccentric block 403 can both interfere with the first screen 201 and the second screen 204.

[0038] The specific operations are as follows:

[0039] During the screening process, the motor 401 drives the eccentric block 403 to rotate via the driving shaft 402 , so that the eccentric block 403 can periodically squeeze the first screen 201 and the second screen 204 , thereby compressing the telescopic column 202 and the spring 203 .

[0040] As an implementation mode: a guide mechanism 3 is provided in the screening box 1, and the guide mechanism 3 includes: guide grooves 301, which are symmetrically distributed on the inner walls on both sides of the screening box 1 and are provided with a lifting part and a fixing part; guide blocks 302, which are fixedly connected to the walls on both sides of the first screen 201 and the second screen 204; and balls 303, which are rotatably provided on one side wall of the guide block 302 and contact with the guide groove 301.

[0041] The specific operations are as follows:

[0042] When the first screen 201 and the second screen 204 move up and down reciprocatingly, the guide block 302 is combined with the guide groove 301 to guide them, and the ball 303 can reduce the friction between the two, thereby ensuring their smooth and orderly movement.

[0043] As an implementation mode; a guide plate 6 is installed under the second screen 204, the guide plate 6 is inclined and extends out of the screening box 1; the screening box 1 has a built-in electric push rod 7, the electric push rod 7 consists of four groups and is distributed at the four corners of the screening box 1, and the output end of the electric push rod 7 is fixedly connected to the lifting part of the screening box 1; the grade of the second screen 204 is higher than that of the first screen 201; an operation panel 5 is installed on a side wall of the screening box 1 adjacent to the motor 401, and the operation panel 5 is electrically connected to the motor 401 and the electric push rod 7.

[0044] The specific operations are as follows:

[0045] The sieved alum is discharged through the guide plate 6 by its own gravity for collection. After the screening is completed, the electric push rod 7 lifts the lifting part of the screening box 1, thereby facilitating the cleaning of impurities filtered on the first sieve 201 and the second sieve 204. The operation panel 5 controls the operation of the device.

[0046] In summary, the working principle of the screening device for producing sodium sulphate is as follows: first, the external power supply is turned on, and the operation of the device is controlled by the operation panel 5, and then the sodium sulphate is poured into the first screen 201 for screening. During the screening process, the first screen 201 performs a coarse filtration on the sodium sulphate, and the second screen 204 performs a fine filtration on the sodium sulphate. At the same time, the motor 401 drives the eccentric block 403 to rotate through the driving shaft 402, so that the eccentric block 403 can periodically squeeze the first screen 201 and the second screen 204, and the telescopic column 20 2 is combined with the spring 203 to compress the first screen 201 and the second screen 204 when they are squeezed, and when the squeezing force disappears, the two are reset by relying on the elastic force, thereby driving the two to move back and forth, and generating the same frequency vibration at the same time, accelerating the screening rate, and the screened alum is discharged through the guide plate 6 by its own gravity for collection. After the screening is completed, the electric push rod 7 lifts up the lifting part of the screening box 1, thereby facilitating the cleaning of impurities filtered on the first screen 201 and the second screen 204.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening device for producing sodium sulphate, characterized in that: It comprises a screening box, the screening box is a telescopic structure, a screening assembly is installed in the screening box, and the screening assembly comprises: a first screen mesh installed inside the lifting part of the screening box; a second screen, the second screen being mounted inside the fixed portion of the screening box; Telescopic columns, each of which is fixedly connected to the four corners of the first screen and the second screen; A spring is fixedly connected to the outer side wall of the telescopic column.

2. A screening device for producing sodium sulphate according to claim 1, characterized in that: A driving mechanism is installed in the screening box, and the driving mechanism comprises: A motor, wherein the motor is fixedly connected to a side wall of the screening box; A drive shaft, the drive shaft being rotatably disposed between the inner walls of the screening box and having one end fixedly connected to the motor output shaft; The eccentric block is composed of two groups and is symmetrically fixed to the two ends of the driving shaft. One end surface of the eccentric block is an arc-shaped structure. The eccentric block can be in conflict with the first screen and the second screen.

3. A screening device for producing sodium sulphate according to claim 2, characterized in that: A guide mechanism is provided in the screening box, and the guide mechanism comprises: Guide grooves, which are symmetrically distributed on the inner walls of both sides of the screening box and are provided on both the lifting part and the fixing part; A guide block is fixedly connected to both side walls of the first screen and the second screen.

4. A screening device for producing sodium sulphate according to claim 3, characterized in that: The guiding mechanism also includes: A ball is rotatably disposed on a side wall of the guide block and contacts the guide groove.

5. A screening device for producing sodium sulphate according to claim 4, characterized in that: A guide plate is installed below the second screen, and the guide plate is arranged obliquely and extends out of the screening box.

6. A screening device for producing sodium sulphate according to claim 5, characterized in that: The screening box has built-in electric push rods, which consist of four groups and are distributed at the four corners of the screening box. The output ends of the electric push rods are fixedly connected to the lifting part of the screening box.

7. A screening device for producing sodium sulphate according to claim 6, characterized in that: The second screen has a higher grade than the first screen.

8. A screening device for producing sodium sulphate according to claim 7, characterized in that: An operation panel is installed on a side wall of the screening box adjacent to the motor, and the operation panel is electrically connected to the motor and the electric push rod.

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