A spiral unloading filter centrifuge for ammonium chloride production

Abstract

The utility model belongs to the technical field of spiral unloading filtering centrifuges, and specifically discloses a spiral unloading filtering centrifuge for ammonium chloride production. The utility model includes an oil pump unit and a material bin fixed on a machine base, the oil pump unit and the material bin are connected and fixed with a bearing seat, a differential is installed in the bearing seat, the input end of the differential is fixed with a main pulley and a clutch in sequence, a main motor is also fixed on the machine base, an output hollow shaft and an output shaft are provided at the output end of the differential, a conical screen basket is fixed on the output hollow shaft, a screen is fixed in the conical screen basket, a spiral scraper is fixed on the output shaft, and the spiral scraper is located inside the screen and fixed to the output shaft. In actual use, the utility model improves the production efficiency of ammonium chloride while reducing the energy consumption of the machine, and has good economic benefits.

Description

Technical Field

[0001] The utility model relates to the field of single crystal furnace charging, in particular to a spiral unloading filtering centrifuge for ammonium chloride production. Background Art

[0002] The spiral unloading filter centrifuge is a continuously working filter centrifuge that can continuously complete all processes such as feeding, separation, washing, drying and unloading. It has the advantages of large output, low energy consumption, simple maintenance and long maintenance cycle. During operation, the solid particles in the screen are transferred from small diameter to large diameter through the inclination angle of the screen and the speed difference between the spiral scraper and the screen. In the traditional ammonium chloride production process, the ammonium chloride suspension slurry enters the pusher centrifuge for solid-liquid separation. At present, the largest pusher centrifuge screen basket diameter used in ammonium chloride production is 1 meter, the total power of the centrifuge is about 120 kilowatts, and the output is 25-27 tons / hour. It has the disadvantages of low output and complex maintenance.

[0003] The spiral unloading filter centrifuge with patent application number CN1792466A, if used for producing ammonium chloride, is susceptible to corrosion damage on its spiral part, which will affect the service life of the machine and increase the production cost; solid-liquid separation is achieved only through the discharge port and the liquid outlet, and the separation efficiency is low. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a spiral unloading filtering centrifuge for ammonium chloride production in view of the deficiencies of the above-mentioned prior art. The spiral unloading filtering centrifuge for ammonium chloride production can improve the production efficiency of ammonium chloride and improve the economic benefits.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A spiral unloading filtering centrifuge for ammonium chloride production is used for solid-liquid separation of ammonium chloride during ammonium chloride production, comprising a machine base, an oil pump unit, a material bin, a bearing seat, a differential, a main motor, a conical screen basket, a pressure cover, a screen and a spiral scraper; the output end of the differential is also provided with an output hollow shaft and an output shaft; the oil pump unit and the material bin are fixed on the machine base, the oil pump unit and the material bin are jointly connected and fixed to the bearing seat, the differential is installed in the bearing seat, the input end of the differential is fixed with a main pulley and a clutch in sequence, the main motor is also fixed on the machine base, the conical screen basket is fixed on the output hollow shaft, the screen is fixed in the conical screen basket, the spiral scraper is fixed on the output shaft, the spiral scraper is located inside the screen and fixed by the output shaft, and a sealing protective cover is provided on the outer side of the pressure cover.

[0007] Furthermore, a sealing unit is provided between the output end of the differential and the material bin, and the sealing unit comprises a pressure cover and a sealing protection cover; the pressure cover and the output shaft fix the spiral scraper, and a sealing protection cover is provided on the outside of the pressure cover.

[0008] The sealing unit can effectively prevent dust, granular materials or liquid materials in the material bin from leaking to the output end of the differential, thereby protecting the normal working state of the differential and preventing equipment damage or failure due to material infiltration; the design of the gland and the output shaft fixing spiral scraper, the sealing protection cover and other designs can effectively protect the equipment components at the output end of the differential from external erosion and damage, extend the service life of the equipment and reduce maintenance costs; the design of the sealing unit can effectively reduce material leakage during the operation of the equipment, reduce safety hazards in the working environment, and improve the safety of the workplace; the design of the gland and the sealing protection cover can easily maintain and clean the sealing unit at the output end of the differential, ensure the sealing performance and extend the service life.

[0009] Furthermore, a material discharge chute is fixed inside the material bin, and the material discharge chute is located outside the cone mouth of the conical screen basket.

[0010] The material chute is located outside the cone mouth of the conical screen basket. After the material is screened through the screen basket, it can easily enter the material chute, which is convenient for collecting and guiding the material and improving the material collection efficiency. Since the material chute is located outside the cone mouth of the conical screen basket, it can effectively avoid the accumulation of materials near the cone mouth and reduce the adverse effects of materials on the equipment, such as blockage and reduction of the discharge channel. The position of the material chute is reasonably designed to facilitate its cleaning and maintenance, ensuring the quality of the material and the normal operation of production.

[0011] Furthermore, the material bin is equipped with a material bin door, and a feed pipe and a washing pipe are installed on the material bin door. The feed pipe extends into the spiral scraper, and the washing pipe washes the material on the screen through the holes on the spiral scraper. A cleaning pipe is installed on the upper part of the material bin, and the cleaning pipe can clean the outside of the conical screen basket. A liquid phase outlet and a solid phase outlet are provided at the lower part of the material bin.

[0012] The setting of the feed pipe and the washing pipe ensures the uniform conveying and cleaning of the material: the feed pipe extends into the spiral scraper to ensure that the material enters the screen evenly for screening; the washing pipe can wash the material on the screen through the holes on the spiral scraper to ensure the cleanliness and quality of the material surface; the washing pipe is installed on the upper part of the material bin to clean the outside of the conical screen basket, keep the equipment clean and hygienic, and extend the service life of the equipment; the liquid phase outlet and the solid phase outlet can easily separate the solid and liquid phases of the material to meet the needs of different material processing and improve production flexibility.

[0013] Furthermore, the spiral scraper body is made of 2205 material that is resistant to chloride ion corrosion.

[0014] 205 material has excellent corrosion resistance, especially strong resistance to chloride ion corrosion. In chemical industry, marine engineering and other industrial fields that require resistance to chloride ion corrosion, the use of this material can extend the service life of the spiral scraper; 2205 material can withstand relatively high temperatures and is suitable for work in high temperature environments; 2205 material has high strength, which enables the spiral scraper to withstand greater pressure and load during work, improving the stability and safety of the equipment; due to its strong corrosion resistance, it reduces the loss and corrosion of the spiral scraper, reduces the frequency of maintenance and replacement, and thus reduces maintenance costs.

[0015] Furthermore, the maximum diameter of the conical screen basket is 1100 mm, the main motor power is 110 kW, the oil pump motor is 0.37 kW, and the full angle of the conical screen basket is 30°.

[0016] By setting the maximum diameter and cone angle of the conical screen basket, a larger area of ​​screening can be achieved, materials can be separated more effectively, and screening efficiency can be improved; the 110kW main motor is powerful enough to ensure that the equipment can still operate stably under high load conditions and achieve efficient screening; compared with the main motor, the oil pump motor has a smaller power, indicating that during the operation of the equipment, the energy consumption of the lubrication and hydraulic systems is relatively low, which is conducive to energy saving and consumption reduction; by reasonably setting the maximum diameter and cone angle of the conical screen basket, the material pass rate can be increased, blockage can be reduced, and the stability and reliability of the equipment can be improved.

[0017] Furthermore, the differential adopts a planetary differential.

[0018] The planetary gear mechanism can withstand greater torque and load in the same volume compared with other types of differentials due to its compact structure, good sealing and small overall volume. When the planetary gear pair is working, it has a higher transmission efficiency because multiple gears are meshed at the same time. This means that the use of a planetary differential can reduce power loss and improve transmission efficiency. The planetary differential has a higher working stability. Since multiple gears are transmitting at the same time, compared with other types of differentials, it has less vibration and noise during operation. The structure of the planetary gear can share the torque, so its load capacity is relatively strong.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model is provided with a conical sieve basket, and a screen is arranged inside the conical sieve basket to achieve the filtration and separation of ammonium chloride, so as to better deliver the product to the feeding trough, and the spiral scraper is improved by using anti-corrosion materials, thereby enhancing the service life of the machine;

[0021] 2. Use the washing pipe and cleaning pipe to clean the conical screen basket after work is completed to prevent the long-term adhesion of ammonium chloride residual liquid from affecting the service life of the machine;

[0022] 3. Compared with the traditional 1-meter centrifuge with push material, the 110KW main motor is used: the total power is reduced from 120kW to 110.37kW, and the output is increased from 25-27 tons / hour to 35-45 tons / hour. While the output is increased by 30% to 80%, the total power is reduced by 8%, which has a good economic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the filter assembly of the utility model.

[0025] Among them are: 1-machine base; 2-vibration damping pad; 3-oil pump unit; 301-oil pump motor; 4-material bin; 401-liquid phase outlet; 402-solid phase outlet; 5-bearing seat; 6-rear bearing; 7-front bearing; 8-differential; 801-output hollow shaft; 802-output shaft; 9-rear bearing pressure cover; 10-front bearing pressure cover; 11-main pulley; 12-clutch; 13-main motor; 14-motor pulley; 15-belt; 16-sealing unit; 01718-filter assembly; 17-conical screen basket; 18-spiral scraper; 1801-spiral scraper coating; 19-screen; 20-pressing ring; 21-pressure cover; 22-sealing protection cover; 23-discharge chute; 24-material bin door; 25-feed pipe; 26-washing pipe; 27-cleaning pipe. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0027] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0028] Reference, Figure 1 and Figure 2It can be seen that a spiral unloading filtering centrifuge for ammonium chloride production includes a machine base 1, a group of vibration damping pads 2 are distributed under the machine base 1, an oil pump unit 3 and a material bin 4 are fixed on the machine base 1, the oil pump unit 3 contains an oil pump motor 301, the oil pump unit 3 and the material bin 4 are connected and fixed with a bearing seat 5, a front bearing 7 and a rear bearing 6 are installed in the bearing seat 5, the front bearing 7 is fixed by a front bearing gland 10, and the rear bearing 6 is fixed by a rear bearing gland 9. The input end of the differential 8 is fixed with a main pulley 11 and a clutch 12 in sequence, and a main motor 13 is also fixed on the machine base 1, and a motor pulley 14 is fixed on the main motor 13, and the motor pulley 14 is connected to the main pulley 11 through a belt 15; a sealing unit 16 is provided between the output end of the differential 8 and the material bin 4, and an output hollow shaft 801 and an output shaft 802 are provided at the output end of the differential 8, and the filtering component 01718 includes a conical screen basket 17, a spiral scraper 18, The screen 19 and the spiral scraper coating 1801, a conical screen basket 17 is fixed on the output hollow shaft 801, the screen 19 is fixed in the conical screen basket 17 through a pressing ring 20, a spiral scraper 18 is fixed on the output shaft 802, located inside the screen 19 and with a certain gap between the screen 19 and the spiral scraper 18, and the spiral scraper 18 is fixed to the output shaft 802 through a pressure cover 21, and a sealing protection cover 22 is provided on the outside of the pressure cover 21; a material discharge trough 23 is fixed inside the material bin 4, and the material discharge trough 23 Located outside the large diameter of the conical screen basket 17; the material bin 4 is equipped with a material bin door 24, and the material bin door 24 is equipped with a feed pipe 25 and a washing pipe 26, the feed pipe 25 extends into the spiral scraper 18, and the washing pipe 26 washes the material on the screen 19 through the holes on the spiral scraper 18. A cleaning pipe 27 is installed on the upper part of the material bin 4, and the cleaning pipe 27 can clean the outside of the conical screen basket 17. The lower part of the material bin 4 has a liquid phase outlet 401 and a solid phase outlet 402. Specific embodiment 1:

[0030] The main body of the spiral scraper 18 is made of 2205 material, and a spiral scraper coating 1801 is provided on the upper part of the spiral scraper 18 blade, which enhances the corrosion resistance and wear resistance of the spiral scraper 18, and greatly prolongs the maintenance cycle of the spiral scraper 18 and the whole machine; the maximum diameter of the conical screen basket 18 is 1100mm, the power of the main motor 13 is 110kW, the power of the oil pump motor 301 is 0.37kW, and the total power of this large spiral unloading filter centrifuge is 110.37kW. Specific embodiment 2:

[0032] During operation, the ammonium chloride suspension enters the spiral scraper 18 through the feed pipe 25, and then passes through the hole on the spiral scraper 18 to enter between the spiral scraper 18 and the conical screen basket 17. The liquid phase passes through the holes of the conical screen basket 17 and the screen slits of the screen 19 and is discharged from the liquid phase outlet 401 of the material bin. The solid phase of the ammonium chloride crystals moves from the small diameter to the large diameter of the conical screen basket 17 along with the blades of the spiral scraper 17 through the speed difference between the spiral scraper 18 and the conical screen basket 17 until it enters the discharge chute 23 to form discharge and is discharged from the solid phase outlet 402 of the material bin. By using the large-scale spiral unloading filtering centrifuge of the utility model, the output of ammonium chloride solid reaches 35 to 45 tons / hour. Compared with the 1-meter centrifuge with push material, the output is greatly improved while the total power is reduced.

[0033] The differential 8 uses an output hollow shaft 801 that can be used to connect other devices, such as gears, couplings, etc., to achieve transmission and rotation, and transmit power to other devices or machines. The output hollow shaft 801 design allows additional axial output force without affecting the rotation of the main shaft, thereby achieving more flexible transmission and application. The differential 8 selects a planetary differential, which not only ensures efficiency but also reduces the overall volume of the device, has higher transmission efficiency, and has low noise when working.

[0034] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A spiral unloading filter centrifuge for ammonium chloride production, used for solid-liquid separation of ammonium chloride during ammonium chloride production, characterized in that: It includes a machine base, an oil pump unit, a material bin, a bearing seat, a differential, a main motor, a conical screen basket, a pressure cover, a screen and a spiral scraper; the output end of the differential is also provided with an output hollow shaft and an output shaft; the oil pump unit and the material bin are fixed on the machine base, and the oil pump unit and the material bin are commonly connected and fixed to the bearing seat, the differential is installed in the bearing seat, the input end of the differential is fixed with a main pulley and a clutch in sequence, the main motor is also fixed on the machine base, the conical screen basket is fixed on the output hollow shaft, a screen is fixed in the conical screen basket, the spiral scraper is fixed on the output shaft, the spiral scraper is located inside the screen and fixed by the output shaft, and a sealing protection cover is provided on the outside of the pressure cover.

2. A spiral unloading filter centrifuge for ammonium chloride production according to claim 1, characterized in that: A sealing unit is provided between the output end of the differential and the material bin, and the sealing unit comprises a pressure cover and a sealing protection cover; the pressure cover and the output shaft fix the spiral scraper, and the sealing protection cover is provided on the outer side of the pressure cover.

3. A spiral unloading filter centrifuge for ammonium chloride production according to claim 1, characterized in that: A material discharge trough is fixed inside the material bin, and the material discharge trough is located outside the cone mouth of the conical screen basket.

4. A spiral unloading filter centrifuge for ammonium chloride production according to claim 3, characterized in that: The material bin is equipped with a material bin door, and a feed pipe and a washing pipe are installed on the material bin door. The feed pipe extends into the spiral scraper, and the washing pipe washes the material on the screen through the holes on the spiral scraper. A cleaning pipe is installed on the upper part of the material bin, and the cleaning pipe can clean the outside of the conical screen basket. The lower part of the material bin is provided with a liquid phase outlet and a solid phase outlet.

5. A spiral unloading filter centrifuge for ammonium chloride production according to claim 1, characterized in that: The spiral scraper body is made of 2205 chloride ion corrosion resistant material.

6. A spiral unloading filter centrifuge for ammonium chloride production according to claim 1, characterized in that: The maximum diameter of the conical screen basket is 1100 mm, the power of the main motor is 110 kW, the oil pump motor is 0.37 kW, and the full angle of the conical screen basket is 30°.

7. A spiral unloading filter centrifuge for ammonium chloride production according to claim 1, characterized in that: The differential adopts a planetary differential.

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