Centrifugal machine for hydrofluoric acid wastewater treatment in solar cell processing procedure
The secondary treatment box of the centrifuge uses a three-way valve to filter and remove the filter screen. The centrifuged water is then further treated by the filter screen of the three-way valve, ensuring that it meets the standards and satisfies subsequent water usage requirements.
Patent Information
- Application Number
- CN202423197926.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing horizontal screw centrifuges are ineffective at removing small solid particles when treating hydrofluoric acid wastewater, resulting in the discharged water failing to meet subsequent water demand.
A three-way valve and a secondary treatment box are installed at the outlet of the horizontal screw centrifuge. The secondary treatment box contains a removable filter screen, which is tilted to automatically clean solid particles. The filtered water passes through the filter screen of the three-way valve and is further treated by the filter screen. The filtered solid particles are collected in a collection box.
It effectively removes smaller solid particles that are difficult to remove by centrifuges, ensuring that the water discharged from the centrifuge meets the standards and can meet subsequent water needs.
Smart Images
Figure CN223732966U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to wastewater treatment technical field, and specifically about a kind of for solar cell processing procedure's hydrogen fluoride acid wastewater treatment with centrifuge. BACKGROUND
[0002] Hydrofluoric acid wastewater is a kind of high-concentration organic wastewater, contains a large amount of harmful substances such as ammonia nitrogen, total nitrogen, etc., and needs to be discharged after treatment, and the hydrofluoric acid wastewater needs to be pretreated by centrifugation before entering the treatment system, to remove large particles suspended solids, sundries, etc., to avoid blocking subsequent treatment equipment.
[0003] The horizontal screw centrifuge can centrifugally remove large particles suspended solids, sundries in the hydrofluoric acid wastewater, and when working, the drum and the screw rotate at a certain differential speed in the same direction at high speed, the material is continuously introduced into the feeding screw inner cylinder, and after acceleration, it enters the drum, and under the action of centrifugal force field, the heavier solid phase deposits on the drum wall to form a sediment layer. The feeding screw continuously pushes the deposited solid phase to the conical end of the drum, and discharges outside the machine through the discharge port. The lighter liquid phase forms an inner liquid ring, which continuously overflows the drum through the large end overflow port of the drum, and is discharged outside the machine through the liquid discharge port.
[0004] In the prior art, if the hydrofluoric acid wastewater contains small sludge or crystalline salt solid particles, the working efficiency of the horizontal screw centrifuge will be greatly reduced, mainly because the solid particles are too small to be deposited on the drum wall, so that the discharged water still contains solid particles, which is difficult to meet the subsequent water demand.
[0005] Therefore, in view of the above technical problems, it is necessary to provide a centrifuge for hydrogen fluoride acid wastewater treatment in solar cell processing procedure.
[0006] The information disclosed in this background section is intended only to increase an understanding of the general background of the present utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms prior art that is already known to those of ordinary skill in the art. UTILITY MODEL CONTENT
[0007] The utility model aims at providing a centrifuge for hydrogen fluoride acid wastewater treatment in solar cell processing procedure, which can solve the problem that the discharged water contains small solid particles and cannot meet the subsequent water demand.
[0008] In order to achieve the above-mentioned purpose, the technical scheme provided by a specific embodiment of the utility model is as follows:
[0009] A centrifuge for hydrogen fluoride acid wastewater treatment in solar cell processing procedure, comprising a horizontal screw centrifuge body and a rack, the horizontal screw centrifuge body is fixedly installed on the rack, and a solid discharge port and a water outlet are arranged below the horizontal screw centrifuge body, respectively.
[0010] The three-way valve is fixedly installed on the water outlet, three ports are arranged on the three-way valve, one of the ports is connected with the water outlet, and a three-way pipe is fixedly installed between the other two ports of the three-way valve, and an external discharge pipe is arranged on the three-way pipe.
[0011] A secondary treatment box is fixedly installed on the three-way pipe, and a filter assembly is installed in the secondary treatment box.
[0012] In one or more embodiments of the utility model, the filter assembly comprises a filter screen, which is detachably assembled in the secondary treatment box.
[0013] In one or more embodiments of the utility model, positioning sliding blocks are fixedly installed at two ends of the filter screen, and an assembly track is fixedly installed in the secondary treatment box, and the positioning sliding blocks are matched with the assembly track.
[0014] In one or more embodiments of the utility model, an open end is arranged on the secondary treatment box, and an end plate is fixedly installed on the open end of the secondary treatment box.
[0015] In one or more embodiments of the utility model, a transparent window is arranged on the end plate.
[0016] In one or more embodiments of the utility model, the filter screen is arranged at an inclination of 30°-60°.
[0017] In one or more embodiments of the utility model, a collecting box is fixedly installed on one side of the secondary treatment box, the collecting box is communicated with the inside of the secondary treatment box, and the collecting box is matched with the filter screen.
[0018] In one or more embodiments of the utility model, a discharge port is arranged at the end of the collecting box, and a sealing cover is screwed on the discharge port.
[0019] In one or more embodiments of the utility model, a ball valve is fixedly installed on the external discharge pipe.
[0020] In one or more embodiments of the utility model, a feeding port is arranged on the horizontal screw centrifuge body.
[0021] Compared with the prior art, the centrifuge for processing hydrogen fluoride acid wastewater in the solar cell processing procedure can further process the water, effectively removes small solid particles that are difficult to remove by the centrifuge, makes the work of the centrifuge no longer restricted by the size of the solid particles in the wastewater, ensures that the water discharged by the centrifuge meets the standard, and meets the subsequent water demand. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0023] Figure 1 The structure of the centrifuge for treating hydrofluoric acid wastewater in a solar cell processing procedure Figure 1 ;
[0024] Figure 2 The structure of the centrifuge for treating hydrofluoric acid wastewater in a solar cell processing procedure Figure 2 ;
[0025] Figure 3 The structure of the centrifuge for treating hydrofluoric acid wastewater in a solar cell processing procedure
[0026] Figure 4 The structure of the centrifuge for treating hydrofluoric acid wastewater in a solar cell processing procedure
[0027] Figure 5 The structure of the centrifuge for treating hydrofluoric acid wastewater in a solar cell processing procedure Figure 4 The enlarged view of A in FIG. 8.
[0028] Main figure mark explanation:
[0029] 1, horizontal screw centrifuge body; 101, feed inlet; 2, rack; 3, motor; 4, solid slag discharge port; 5, water outlet; 6, three-way valve; 7, three-way pipe; 8, secondary treatment box; 801, end plate; 8011, transparent window; 802, assembly track; 9, external discharge pipe; 901, ball valve; 10, collection box; 1001, discharge port; 1002, packaging cover; 11, filter screen; 1101, positioning sliding block. DETAILED DESCRIPTION
[0030] In order to make the person skilled in the art better understand the technical solutions in the present application, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.
[0031] As Figures 1-5 shown, the utility model discloses a kind of centrifuges for hydrofluoric acid wastewater treatment in solar cell processing procedure in an embodiment, including horizontal screw centrifuge body 1 and rack 2, horizontal screw centrifuge body 1 is fixedly installed on rack 2, at least drum, screw pusher and motor 3 are installed in horizontal screw centrifuge body 1, wherein, the output end of motor 3 is connected screw pusher by belt, can drive screw pusher rotation, to separate solid dirt and water.
[0032] One end of screw pusher is provided with feed inlet 101, hydrofluoric acid wastewater feeding pipe is connected by feed inlet 101, so that hydrofluoric acid wastewater can enter screw pusher, and finally release to the inside of drum.
[0033] As Figure 2 shown, the lower portion of horizontal screw centrifuge body 1 is provided with solid discharge port 4 and water outlet 5 respectively, solid discharge port 4 is used for the discharge of solid dirt, and water outlet 5 is used for the discharge of clean water.
[0034] As Figure 3 shown, the bottom end of water outlet 5 is fixedly installed with three-way valve 6 by flange, three-way valve 6 is used to control the flow direction of centrifuge discharge clean water. Three-way valve 6 is provided with three ports, one of the ports of three-way valve 6 is connected with water outlet 5, and three-way valve 6 is fixedly installed with three-way pipe 7 between the other two ports, three-way pipe 7 is also provided with three ports, two of the ports of three-way pipe 7 are connected with the two ports of three-way valve 6 respectively, and the other port of three-way pipe 7 is provided with external discharge pipe 9, and external discharge pipe 9 is used for the external discharge of clean water.
[0035] As Figure 4 and Figure 5 shown, three-way pipe 7 is fixedly installed with secondary treatment tank 8 on one side, filter assembly is installed in secondary treatment tank 8, and the filter assembly includes screen 11, positioning sliding block 1101 is fixedly installed at both ends of screen 11 respectively, assembly rail 802 is fixedly installed on both sides in secondary treatment tank 8, and positioning sliding block 1101 can be slidably inserted on assembly rail 802.
[0036] Specifically, positioning sliding block 1101 on both sides of screen 11 is slidably inserted on assembly rail 802, i.e. screen 11 can be assembled in the inside of secondary treatment tank 8, and using this assembly mode, screen 11 can be flexibly disassembled, and replacement and maintenance are facilitated.
[0037] As Figure 3As shown, the front end of the secondary treatment box 8 is an open end. An end plate 801 is fixedly installed at the open end of the secondary treatment box 8 by bolts. The end plate 801 is used to seal the open end of the secondary treatment box 8. By removing the bolts, the end plate 801 can be removed, thereby enabling the replacement and maintenance of the filter screen 11.
[0038] The end plate 801 is provided with a transparent window 8011, through which the usage of the filter 11 can be observed, so that the staff can replace and maintain the filter 11 in a timely manner according to its usage.
[0039] Specifically, if the hydrofluoric acid wastewater entering the centrifuge contains small solid particles, the clean water discharged from the outlet 5 is controlled by the three-way valve 6 to enter the secondary treatment tank 8 from one side of the three-way pipe 7. The clean water is then further filtered by the filter screen 11 inside the secondary treatment tank 8 to remove any remaining small solid particles after centrifugation, ensuring efficient solid-liquid separation and that the final discharged water meets standards for subsequent water use. When the wastewater does not contain small solid particles, the clean water is controlled by the three-way valve 6 to enter the other side of the three-way pipe 7 and is ultimately discharged directly through the external discharge pipe 9 without further treatment.
[0040] The filter screen 11 is tilted at 30°-60°. This tilt allows solid particles to slide down automatically, enabling the filter screen 11 to self-clean and preventing solid particles from accumulating on it and causing blockage. It also increases the effective filtration area, reduces water flow resistance, and ensures a continuous and stable water output.
[0041] like Figure 4 As shown, a collection box 10 is fixedly installed on one side of the secondary treatment box 8. The collection box 10 is connected to the interior of the secondary treatment box 8. The collection box 10 is matched with the filter screen 11. Solid particles that slide off the filter screen 11 can automatically enter the interior of the collection box 10 and be collected inside the collection box 10. This prevents the filtered solid particles from accumulating inside the secondary treatment box 8 and ensures the efficient use of the filter screen 11.
[0042] The collection box 10 has a discharge port 1001 at its end, with external threads on the discharge port 1001. The sealing cover 1002 has internal threads that match the external threads. The sealing cover 1002 is screwed onto the discharge port 1001 to seal the end of the collection box 10. By removing the sealing cover 1002, the solid particles collected inside the collection box 10 can be automatically discharged, facilitating cleaning of the solid particles inside the collection box 10.
[0043] A ball valve 901 is fixedly installed on the external discharge pipe 9. The ball valve 901 is used to control the opening and closing of the external discharge pipe 9. When the ball valve 901 is closed and the sealing cover 1002 is removed, the clean water discharged from the outlet 5 first enters the side without the secondary treatment box 8, and then enters the interior of the secondary treatment box 8 from the bottom. This enables reverse flushing of the filter screen 11 and flushing and cleaning of the inside of the collection box 10, so as to facilitate regular cleaning and maintenance of the interior of the secondary treatment box 8 and the collection box 10.
[0044] During operation, hydrofluoric acid wastewater enters the horizontal screw centrifuge body 1 through inlet 101. Solid-liquid centrifugal separation is completed inside the centrifuge body 1. If no small solid particles are present, the clean water is directly discharged from the side without the secondary treatment tank 8 via the three-way pipe 7 and the external discharge pipe 9. If small solid particles are present, the flow path of the clean water is changed through the three-way valve 6, allowing the water to pass through the interior of the secondary treatment tank 8, be filtered by the filter screen 11, and then discharged through the external discharge pipe 9, ensuring that the water discharged from the centrifuge meets the standards.
[0045] Compared with the prior art, the centrifuge for treating hydrofluoric acid wastewater in the solar cell processing process of this utility model can further treat the effluent to effectively remove smaller solid particles that are difficult to remove by the centrifuge. This makes the operation of the centrifuge no longer restricted by the size of solid particles in the wastewater, ensuring that the water discharged from the centrifuge meets the standards and can meet the subsequent water demand.
[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A centrifuge for treating hydrogen fluoride acid wastewater used in a solar cell processing procedure, comprising a horizontal screw centrifuge body and a frame, the horizontal screw centrifuge body being fixedly installed on the frame, characterized in that, The solid discharge port and the water outlet are arranged below the horizontal screw centrifuge body respectively; A three-way valve is fixedly installed on the water outlet, three ports are arranged on the three-way valve, one port of the three-way valve is connected with the water outlet, and a three-way pipe is fixedly installed between the other two ports of the three-way valve, and an external discharge pipe is arranged on the three-way pipe; A secondary treatment box is fixedly installed on the three-way pipe, and a filter assembly is installed in the secondary treatment box.
2. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 1, characterized in that, The filter assembly comprises a filter screen which is detachably assembled in the secondary treatment box.
3. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 2, characterized in that, Positioning sliding blocks are fixedly installed at two ends of the filter screen, and an assembling track is fixedly installed in the secondary treatment box and matched with the positioning sliding blocks.
4. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 3, characterized in that, An open end is arranged on the secondary treatment box, and an end plate is fixedly installed on the open end of the secondary treatment box.
5. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 4, characterized in that, A transparent window is arranged on the end plate.
6. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 2, characterized in that, The filter screen is arranged in an inclination of 30°-60°.
7. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 6, characterized in that, A collecting box is fixedly installed on one side of the secondary treatment box, the collecting box is communicated with the inside of the secondary treatment box, and the collecting box is matched with the filter screen.
8. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 7, characterized in that, A discharge port is arranged at an end of the collecting box, and a sealing cover is screwed on the discharge port.
9. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 1, characterized in that, A ball valve is fixedly installed on the external discharge pipe.
10. The centrifuge for treating hydrofluoric acid wastewater used in a solar cell processing procedure according to claim 1, characterized in that, A feeding port is arranged on the horizontal screw centrifuge body.