Sludge filter pressing device for fluorine-containing wastewater treatment

Abstract

The utility model relates to the technical field of fluorine-containing wastewater treatment, in particular to a sludge filter pressing device for fluorine-containing wastewater treatment, which comprises a filter pressing frame, and a conveying structure is mounted in the middle of the filter pressing frame; limiting plates are installed on the upper side wall of the filter pressing frame and located on the two sides of the conveying structure in a penetrating mode respectively, multiple sets of extrusion rollers with different heights are rotationally installed between the two sets of limiting plates, cleaning brushes are installed between the two sets of limiting plates and located on the upper sides of the multiple sets of extrusion rollers respectively, multiple sets of filtering holes are formed in the lower portions of the limiting plates, and connecting transverse plates are installed at the tops of the limiting plates. Compared with the prior art, the sludge filter press has the advantages that sludge on the upper side of the conveying belt is sequentially extruded by the multiple groups of extrusion rollers with different heights, so that the accumulated sludge can be spread, and the sludge accumulation part is more thoroughly subjected to filter pressing; after sludge on the upper side of the conveying belt is extruded by the extrusion rollers, water is filtered out through filtering holes in the lower parts of the limiting plates, and the limiting plates are conveniently drawn out from two sides of the filter pressing frame for cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorine-containing wastewater treatment, in particular to a sludge filter press device for fluorine-containing wastewater treatment. Background Art

[0002] After the fluorine-containing wastewater generated in the production process is collected through the pipe network, it first enters the fluorine-containing wastewater regulating tank for water quality and quantity adjustment, and then is lifted to the alkali adjustment tank of the pretreatment equipment through a self-priming pump. After the wastewater enters the alkali adjustment tank, the pH value of the wastewater is adjusted to 10-12 by adding alkaline agents, and then calcium salts are added in an alkaline environment to combine the fluoride ions and calcium ions in the wastewater into calcium fluoride that is insoluble in water; after the first-level dosing reaction, the second-level dosing is fully reacted. After the reaction is completed, flocculant PAC and coagulant aid PAM are added to the wastewater to form floccules insoluble in water. The suspended solids in the water form floccules, and then flow to the inclined tube sedimentation tank by gravity. The shallow sedimentation effect of the inclined tube is used to precipitate and separate the insoluble floccules, and then the floccules and other sludge are subjected to filter press treatment.

[0003] The existing sludge filter press device discharges the sludge onto the feeding filter belt before filtering. At this time, the sludge on the filter belt is unevenly distributed and has different thicknesses, which leads to incomplete filtration of the fluorine-containing wastewater at the location where the sludge is accumulated during filtering. In addition, the conveyor belt uses a filter belt, which is not easy to clean when it is blocked, which easily affects the drainage effect of the fluorine-containing wastewater.

[0004] In response to the above technical problems, the present application proposes a sludge filter press device for treating fluorine-containing wastewater. Utility Model Content

[0005] 1. Technical Problems Solved

[0006] The technical problem to be solved by the utility model is that the sludge on the filter belt is unevenly distributed and has different thicknesses, which leads to incomplete filtration of fluorine-containing wastewater at the location where the sludge is accumulated during filtration, and it is inconvenient to clean the filter belt when it is blocked.

[0007] 2. Technical Solution

[0008] In order to solve the above technical problems, the utility model provides a technical solution: a sludge filter press device for treating fluorine-containing wastewater, comprising a filter press frame, a discharge port is provided on one side wall of the filter press frame, a feed trough is installed through the upper part of the other side of the filter press frame, and a conveying structure is installed in the middle of the filter press frame;

[0009] The upper side walls of the filter press frame are respectively installed with limit plates on both sides of the conveying structure, multiple groups of extrusion rollers of different heights are rotatably installed between the two groups of limit plates, and cleaning brushes are respectively installed between the two groups of limit plates and on the upper sides of the multiple groups of extrusion rollers, multiple groups of filter holes are provided at the lower part of the limit plates, and a connecting cross plate is installed on the top of the limit plates.

[0010] As an improvement, the upper side wall of the filter press frame is provided with a groove for the limiting plate to slide through.

[0011] As an improvement, the two opposite side walls of the limiting plate are respectively provided with limiting strips, and the two opposite side walls of the groove are respectively provided with limiting sliding grooves for cooperating with the limiting strips to slide through.

[0012] As an improvement, bolts are respectively installed through the opposite sides of the connecting transverse plate, and threaded holes for inserting the matching bolts are provided on the upper side of the filter press frame.

[0013] As an improvement, the heights of the multiple groups of extrusion rollers gradually decrease from the feed trough to the discharge port.

[0014] As an improvement, a mounting plate is connected to the upper side of the cleaning brush, and a slot for inserting and installing the mounting plate is provided on the limiting plate.

[0015] As an improvement, the conveying structure includes a driven roller and a driving roller, a conveyor belt is provided between the driven roller and the outer side of the driving roller, the driven roller is rotatably installed between the two side walls of the filter press frame, the outer wall of the filter press frame and the two opposite sides of the discharge port are respectively installed with mounting blocks, the driving roller is rotatably installed between the two groups of mounting blocks, and a motor connected to the shaft end of the driving roller is installed on one side of the mounting block.

[0016] As an improvement, a support plate is installed between the two opposite sides of the filter press frame, the support plate is located between the driven roller and the driving roller, and the upper side of the support plate contacts the lower side of the upper half of the conveyor belt.

[0017] 3. Beneficial Effects

[0018] The advantages of the utility model compared with the prior art are:

[0019] 1. The sludge on the upper side of the conveyor belt is squeezed in sequence by multiple groups of squeezing rollers at different heights, which can expand the accumulated sludge and filter the accumulated sludge more thoroughly;

[0020] 2. The conveyor belt only plays a role in conveying, not filtering. After the squeezing roller squeezes the sludge on the upper side of the conveyor belt, the water is filtered out through the filter holes at the bottom of the limit plate. The limit plate is convenient for pulling out and cleaning from both sides of the filter press frame, and will not affect the drainage effect of fluorine-containing wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of a sludge filter press device for treating fluorine-containing wastewater.

[0022] Figure 2 The utility model is a schematic diagram of a limit plate connection structure of a sludge filter press device for treating fluorine-containing wastewater.

[0023] Figure 3 The utility model is a schematic diagram of the internal structure of a filter press frame of a sludge filter press device for treating fluorine-containing wastewater.

[0024] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of a sludge filter press device for treating fluorine-containing wastewater.

[0025] As shown in the figure: 1. Filter press frame; 2. Discharge port; 3. Driven roller; 4. Mounting block; 5. Driving roller; 6. Motor; 7. Conveyor belt; 8. Support plate; 9. Groove; 10. Limit plate; 11. Limit bar; 12. Limit slide; 13. Filter hole; 14. Extrusion roller; 15. Slot; 16. Mounting plate; 17. Cleaning brush; 18. Connecting cross plate; 19. Bolt; 20. Threaded hole; 21. Feed chute. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] Embodiment 1

[0028] As attached Figure 1 and attached Figure 2 As shown, a sludge filter press device for treating fluorine-containing wastewater comprises a filter press frame 1, a discharge port 2 is provided on one side wall of the filter press frame 1, a feed trough 21 is installed through the upper part of the other side of the filter press frame 1, and a conveying structure is installed in the middle of the filter press frame 1;

[0029] The upper side wall of the filter press frame 1 and the two sides of the conveying structure are respectively passed through and installed with limit plates 10, and multiple groups of extrusion rollers 14 of different heights are rotatably installed between the two groups of the limit plates 10. Cleaning brushes 17 are respectively installed between the two groups of the limit plates 10 and on the upper sides of the multiple groups of extrusion rollers 14. The lower part of the limit plate 10 is provided with multiple groups of filter holes 13, and the top of the limit plate 10 is installed with a connecting cross plate 18.

[0030] Through the above structure, the sludge treated with fluorine-containing wastewater is fed into the filter press frame 1 through the feed trough 21, and the sludge falls on the upper side of the conveying structure for conveying. During the sludge conveying process, the sludge on the upper side of the conveying structure is squeezed in sequence by the squeezing rollers 14 at different heights to squeeze out the water in the sludge. The sludge contaminated on the outside of the squeezing roller 14 is cleaned by the cleaning brush 17 to prevent the sludge from accumulating on the outside of the squeezing roller 14 and affecting the rotation of the squeezing roller 14. The sludge on the upper side of the conveying structure is limited by two groups of limiting plates 10, and the squeezed water is filtered out through the multiple groups of filter holes 13 at the bottom of the limiting plates 10, and flows downward through the filter press frame 1 for collection. The sludge on the upper side of the conveying structure passes through the discharge port 2 for collection. The specific structure is as follows:

[0031] Combined with Figure 2 and attached Figure 3 As shown, the upper side wall of the filter press frame 1 is provided with a groove 9 for the limiting plate 10 to slide through, the limiting plate 10 has limiting strips 11 on the opposite side walls, and the groove 9 has limiting sliding grooves 12 on the opposite side walls for the limiting strips 11 to slide through;

[0032] Bolts 19 are respectively installed through the two opposite sides of the connecting transverse plate 18 , and threaded holes 20 for inserting the matching bolts 19 are provided on the upper side of the filter press frame 1 .

[0033] Through the above structure, when the limit plate 10 is installed, the limit plate 10 is passed through the groove 9 and contacts one side of the conveying structure. The limit bar 11 is inserted into the limit slide groove 12 to limit the limit plate 10 so that the limit plate 10 can be installed vertically. The lower side of the connecting cross plate 18 is supported on the upper side of the filter press frame 1. The connecting cross plate 18 is installed on the upper side of the filter press frame 1 by rotating the bolt 19 through the threaded hole 20 to ensure the stability of the limit plate 10 so that the extrusion roller 14 can extrude the sludge.

[0034] Combined with Figure 2 As shown, the heights of the multiple groups of extrusion rollers 14 gradually decrease from the feed trough 21 to the discharge port 2, the upper side of the cleaning brush 17 is connected to a mounting plate 16, and the limiting plate 10 is provided with a slot 15 for inserting and installing the mounting plate 16.

[0035] Through the above structure, the cleaning brush 17 is installed on the lower side of the mounting plate 16, and the cleaning brush 17 is supported by the mounting plate 16. The two ends of the mounting plate 16 are inserted into the inner wall of the slot 15 and fixed, which is convenient for the installation of the cleaning brush 17. The cleaning brush 17 is easy to disassemble and clean later.

[0036] Embodiment 2

[0037] Based on Example 1, please refer to the attached Figure 1 and attached Figure 4The transmission structure includes a driven roller 3 and a driving roller 5. A conveyor belt 7 is provided between the driven roller 3 and the outer side of the driving roller 5. The driven roller 3 is rotatably mounted between the two side walls of the filter press frame 1. Mounting blocks 4 are respectively installed on the outer wall of the filter press frame 1 and located on the opposite sides of the discharge port 2. The driving roller 5 is rotatably mounted between the two groups of mounting blocks 4. A motor 6 connected to the shaft end of the driving roller 5 is installed on one side of the mounting block 4.

[0038] A support plate 8 is installed between two opposite sides of the filter press frame 1 . The support plate 8 is located between the driven roller 3 and the driving roller 5 . The upper side of the support plate 8 contacts the lower side of the upper half of the conveyor belt 7 .

[0039] Through the above structure of the second embodiment, the active roller 5 is driven to rotate by the motor 6, thereby driving the conveyor belt 7 and the driven roller 3 to rotate, and the sludge is transported by the conveyor belt 7. The upper half of the conveyor belt 7 is supported by the support plate 8. When the squeezing roller 14 squeezes the sludge on the upper side of the conveyor belt 7, the conveyor belt 7 has a good supporting force to ensure the water squeezing effect on the sludge.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0042] The above describes the utility model and its implementation methods, which are not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention of the utility model, they can creatively design a structure and embodiment similar to the technical solution, which should belong to the protection scope of the utility model.

Claims

1. A sludge filter press device for treating fluorine-containing wastewater, comprising a filter press frame (1), a discharge port (2) being provided on one side wall of the filter press frame (1), a feed trough (21) being installed through the upper part of the other side of the filter press frame (1), and a conveying structure being installed in the middle of the filter press frame (1), characterized in that: Limiting plates (10) are installed through the upper side walls of the filter press frame (1) and on both sides of the conveying structure; multiple groups of squeezing rollers (14) of different heights are rotatably installed between two groups of the limiting plates (10); cleaning brushes (17) are installed between the two groups of the limiting plates (10) and on the upper sides of the multiple groups of squeezing rollers (14); multiple groups of filter holes (13) are provided at the lower part of the limiting plates (10); and a connecting transverse plate (18) is installed at the top of the limiting plates (10).

2. The sludge filter press device for treating fluorine-containing wastewater according to claim 1, characterized in that: The upper side wall of the filter press frame (1) is provided with a groove (9) for the matching limiting plate (10) to slide through.

3. A sludge filter press device for treating fluorine-containing wastewater according to claim 2, characterized in that: The limiting plate (10) is provided with limiting strips (11) on opposite side walls, and the groove (9) is provided with limiting sliding grooves (12) for the limiting strips (11) to slide through.

4. The sludge filter press device for treating fluorine-containing wastewater according to claim 1, characterized in that: Bolts (19) are respectively installed through the opposite sides of the connecting transverse plate (18), and threaded holes (20) for inserting the matching bolts (19) are provided on the upper side of the filter press frame (1).

5. The sludge filter press device for treating fluorine-containing wastewater according to claim 1, characterized in that: The heights of the multiple groups of squeezing rollers (14) gradually decrease from the feed trough (21) to the discharge port (2).

6. The sludge filter press device for treating fluorine-containing wastewater according to claim 1, characterized in that: The upper side of the cleaning brush (17) is connected to a mounting plate (16), and the limiting plate (10) is provided with a slot (15) for inserting and installing the mounting plate (16).

7. The sludge filter press device for treating fluorine-containing wastewater according to claim 1, characterized in that: The conveying structure comprises a driven roller (3) and a driving roller (5), a conveyor belt (7) is provided between the driven roller (3) and the outer side of the driving roller (5), the driven roller (3) is rotatably mounted between the two side walls of the filter press frame (1), mounting blocks (4) are respectively mounted on the outer wall of the filter press frame (1) and located on the opposite sides of the discharge port (2), the driving roller (5) is rotatably mounted between the two groups of mounting blocks (4), and a motor (6) connected to the shaft end of the driving roller (5) is mounted on one side of the mounting block (4).

8. The sludge filter press device for treating fluorine-containing wastewater according to claim 5, characterized in that: A support plate (8) is installed between two opposite sides of the filter press frame (1), and the support plate (8) is located between the driven roller (3) and the driving roller (5), and the upper side of the support plate (8) is in contact with the lower side of the upper half of the conveyor belt (7).

Images