Wastewater freezing, crystallizing and concentrating device

Abstract

The utility model discloses a wastewater freezing, crystallizing and concentrating device and relates to the technical field of wastewater treatment. The device comprises a filtering box and a condensation tank, a filtering assembly is arranged in the filtering box, and a discharging assembly is further arranged at the front end of the filtering box; the filter assembly comprises mounting plates movably connected to the two sides of the interior of the filter box through mounting columns correspondingly, and a filter plate is clamped between every two adjacent mounting plates. The eccentric wheel drives the mounting plate and the filter plate to vibrate, so that crystals on the filter plate are uniformly distributed, the crystals are washed and dried through the washing pipe and the first nozzle, and the problem that the separated crystals are inconvenient to wash and dry in the prior art is solved; hot air in the filter box is guided into the annular pipe through the air inlet pipe, and the hot air is guided into the concentrated solution through the annular pipe and the second nozzle, so that the concentrated solution is heated to be saturated, and the problem that the separated concentrated solution is inconvenient to be in a saturated state in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and particularly relates to a wastewater freezing crystallization concentration device. Background Art

[0002] Wastewater mainly includes domestic wastewater, industrial wastewater, etc. Among them, industrial wastewater refers to the waste liquid generated during industrial production, which contains industrial production materials, intermediate products, by-products and pollutants generated during the production process that are lost with water. In order to treat these wastewaters, a wastewater freezing crystallization concentration device is usually used. Through this device, the wastewater is cooled and crystallized to precipitate the specified components in the wastewater, realizing the recycling of resources and avoiding environmental pollution at the same time.

[0003] A document with the publication number of CN220802195U discloses a Taibai waste acid evaporation combined with freezing crystallization concentration treatment device, including a dilute acid pump, a filter press, a negative pressure evaporator, a condenser, a pressing plate and a filter box. The inner wall of the filter box is slidably connected with a filter element, and the inner wall of the filter element is slidably connected with an installation component. The installation component includes a rotating block, and a threaded rod is fixedly assembled on the outer wall of the rotating block.

[0004] However, it still has the following drawbacks in actual use:

[0005] 1. In the above freezing crystallization concentration treatment device, the inner wall of the filter box is slidably connected with a filter element, and the inner wall of the filter element is slidably connected with an installation component. The filter element is fixed inside the filter box through the installation component, and the filter element is used to separate crystals and concentrated liquid. However, during use, it is not convenient to wash and dry the separated crystals, resulting in inconvenience in quickly recovering the separated crystals.

[0006] 2. In the above freezing crystallization concentration treatment device, it includes a dilute acid pump, a filter press, a negative pressure evaporator, a condenser, a pressing plate and a filter box. The filter element is arranged inside the filter box through the installation component. The wastewater is frozen and crystallized by the condenser, and the concentrated liquid and crystals are separated by the filter element in the filter box. However, during the use process, due to the large number of components in the wastewater and only one component can be precipitated by one-time freezing crystallization, the freezing crystallization of the wastewater is often multi-stage. The above device cannot ensure that the concentrated liquid is in a saturated state, and thus cannot ensure the freezing crystallization effect of the next stage.

[0007] Therefore, we provide a wastewater freezing crystallization concentration device to solve the above problems. Summary of the Utility Model

[0008] The purpose of the present utility model is to provide a wastewater freezing crystallization concentration device. By driving the mounting plate and the filter plate to vibrate through an eccentric wheel, the crystals on the filter plate are evenly distributed, and the crystals are washed and dried through a flushing pipe and a first nozzle, solving the problem that it is inconvenient to wash and dry the separated crystals in the prior art. The hot air in the filtering box is introduced into the annular pipe through an air inlet pipe, and the hot air is introduced into the concentrated liquid through the annular pipe and the second nozzle, realizing the heating of the concentrated liquid to make it saturated, and solving the problem that it is inconvenient to ensure that the separated concentrated liquid is in a saturated state in the prior art.

[0009] To solve the above technical problems, the present utility model is realized through the following technical solutions:

[0010] The present utility model is a wastewater freezing crystallization concentration device, including a filtering box and a condensation tank fixedly connected above the filtering box. A filtering component is arranged inside the filtering box, and a discharging component is also arranged at the front end of the filtering box;

[0011] The filtering component includes mounting plates respectively movably connected to both sides inside the filtering box through mounting columns. Filter plates are clamped between adjacent mounting plates. Eccentric wheels are in contact connection with the front and rear ends of the lower surfaces of the mounting plates. Flushing pipes are fixedly connected above the mounting plates. One side of the eccentric wheel is fixedly connected with a mounting rod. The end of the mounting rod far from the eccentric wheel rotates through the outer wall of the filtering box and is fixedly connected with a first bevel gear. A plurality of first nozzles are fixedly communicated with one side of the flushing pipe at equal intervals;

[0012] The discharging component includes a processing box located at the front end of the filtering box. An annular pipe is fixedly connected to the lower part inside the processing box. A plurality of second nozzles are fixedly communicated with the top of the annular pipe at equal intervals. Third connecting pipes are fixedly communicated with both sides of the annular pipe. The end of the third connecting pipe far from the annular pipe is fixedly communicated with an air inlet pipe. The end of the air inlet pipe far from the third connecting pipe penetrates through the top of the filtering box and is fixedly communicated with an air collecting hood.

[0013] The further setting of the present utility model is: a material taking opening is formed on the front end face of the filtering box, a sealing cover plate is clamped inside the material taking opening, a feed pipe is fixedly communicated with the top of the condensation tank, a discharge pipe is fixedly communicated with the bottom of the condensation tank, the bottom end of the discharge pipe penetrates through the top of the filtering box and extends to the upper inner side of the filtering box, and a discharge valve is arranged on the discharge pipe.

[0014] The further setting of the present utility model is: grooves are formed on the outer walls of the mounting plates close to each other, a convex block is in clearance fit with the inside of the groove, and one side of the convex block penetrates through the groove and is respectively welded on the outer walls of both sides of the filter plate.

[0015] A further setting of the present utility model is as follows: The bottom end of the mounting column is fixedly connected to the inner bottom of the filter box. An activity column movably penetrates through the inside of the mounting column. The top end of the activity column is welded with a connecting plate, and the upper surface of the connecting plate is fixedly connected to the lower surface of the mounting plate. The bottom end of the activity column is welded with a piston plate, and the lower surface of the piston plate is fixedly connected with a return spring, and the bottom end of the return spring is fixedly connected to the inner bottom of the mounting column.

[0016] A further setting of the present utility model is as follows: Both the front and rear ends of the upper surface of the mounting plate are fixedly connected with mounting frames. The center position of the upper surface of the mounting plate is fixedly connected with a diversion block. Both ends of the flushing pipe are fixedly connected to the inside of the mounting frames. The top of the flushing pipe is fixedly communicated with a telescopic hose, and the top end of the telescopic hose penetrates through the top of the filter box and is fixedly communicated with an air outlet pipe and a water outlet pipe through a three-way valve.

[0017] A further setting of the present utility model is as follows: Installation boxes are fixedly connected to the upper parts of the outer walls on both sides of the filter box. A water storage cavity and a heating cavity are arranged inside the installation boxes. A submersible pump is fixedly connected to the inner bottom of the water storage cavity, and the water outlet end of the submersible pump is fixedly communicated with the bottom end of the water outlet pipe. A plurality of electric radiation tubes are fixedly connected to the inside of the heating cavity. A blower is fixedly connected to the air inlet of the heating cavity. The bottom end of the air outlet pipe penetrates through the top of the installation box and extends to the upper part inside the heating cavity.

[0018] A further setting of the present utility model is as follows: Biaxial motors are fixedly connected to the center positions of the outer walls on both sides of the filter box through motor brackets. Bearing seats are fixedly connected to the front and rear ends of the outer walls on both sides of the filter box. The output shafts of the biaxial motors are fixedly connected with rotating shafts. The ends of the rotating shafts far away from the biaxial motors rotatably penetrate through the bearing seats and are fixedly connected with second bevel gears, and the first bevel gear and the second bevel gear are meshed with each other.

[0019] A further setting of the present utility model is as follows: A first connecting pipe is fixedly communicated with the lower part of the rear end face of the treatment box. The rear end of the first connecting pipe penetrates through the lower part of the front end face of the filter box and extends to the inside of the filter box. A second connecting pipe is fixedly communicated with the lower part of the front end face of the treatment box.

[0020] A further setting of the present utility model is as follows: A stirring motor is fixedly connected to the top of the treatment box. The output shaft of the stirring motor rotatably penetrates through the top of the treatment box and is fixedly connected with a stirring shaft, and a plurality of stirring blades are sleeved on the outer wall of the stirring shaft.

[0021] The present utility model has the following beneficial effects:

[0022] 1. The utility model starts the double - shaft motor by setting up a filtering component. The output shaft of the double - shaft motor drives the second bevel gear to rotate through a rotating shaft. The second bevel gear drives the eccentric wheel to rotate through the first bevel gear and the mounting rod. By the rotation of the eccentric wheel, an upward acting force is periodically applied to the mounting plate, so that the mounting plate drives the filter plate to vibrate, making the crystal distribution on the filter plate uniform. At the same time, the submersible pump is started, so that the cleaning water in the water storage cavity is sprayed on the crystals through the flushing pipe and the first nozzle, realizing the washing of the crystals. After the washing is completed, the submersible pump is turned off and the electric radiant tube and the blower are started, so that the flushing pipe and the first nozzle spray hot air on the crystals, realizing the drying of the crystals, facilitating the washing and drying of the separated crystals, and thus facilitating the recovery of the crystals.

[0023] 2. The utility model realizes heating the separated concentrated liquid to a saturated state by setting up a discharging component. The concentrated liquid screened in the filtering box enters the treatment box through the first connecting pipe, and the residual hot air in the filtering box enters the air inlet pipe through the air collecting hood, enters the annular pipe through the air inlet pipe, and finally evenly introduces the hot air into the treatment box through the second nozzle, facilitating the secondary freeze - crystallization of the concentrated liquid and improving the working efficiency.

[0024] Of course, it is not necessary for any product implementing the utility model to simultaneously achieve all the above - mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic diagram of the overall structure of the waste - water freeze - crystallization concentration device.

[0027] Figure 2 It is a schematic diagram of the structure of the filtering box and the condensation tank of the present utility model.

[0028] Figure 3 It is a schematic diagram of the structure of the filtering component of the present utility model.

[0029] Figure 4 It is an installation schematic diagram between the mounting plate and the filter plate of the present utility model.

[0030] Figure 5 It is a front - view sectional view of the mounting column of the present utility model.

[0031] Figure 6 It is a schematic diagram of the structure of the flushing pipe of the present utility model.

[0032] Figure 7 This is a schematic installation diagram between the eccentric wheel and the dual-axis motor of the present utility model.

[0033] Figure 8 This is a side sectional view of the installation box of the present utility model.

[0034] Figure 9 This is a schematic structural diagram of the discharging assembly of the present utility model.

[0035] Figure 10 This is a schematic installation diagram between the annular pipe and the air inlet pipe of the present utility model.

[0036] Figure 11 This is a schematic structural diagram of the stirring motor of the present utility model.

[0037] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0038] 1 - Filter box, 101 - Material taking port, 102 - Sealing cover plate, 2 - Condensation tank, 201 - Feed pipe, 202 - Discharge pipe, 203 - Discharge valve, 3 - Filter assembly, 301 - Mounting plate, 301a - Groove, 301b - Mounting frame, 301c - Flow guiding block, 302 - Mounting column, 302a - Movable column, 302b - Connecting plate, 302c - Piston plate, 302d - Return spring, 303 - Filter plate, 303a - Protrusion, 304 - Eccentric wheel, 304a - Mounting rod, 304b - First bevel gear, 305 - Dual-axis motor, 305a - Motor frame, 305b - Bearing seat, 305c - Rotating shaft, 305d - Second bevel gear, 306 - Flushing pipe, 306a - First nozzle, 306b - Flexible hose, 306c - Three-way valve, 306d - Air outlet pipe, 306e - Water outlet pipe, 306f - Submersible pump, 307 - Installation box, 307a - Water storage chamber, 307b - Heating chamber, 307c - Electric radiation tube, 307d - Blower, 4 - Discharging assembly, 401 - Processing box, 401a - First connecting pipe, 401b - Second connecting pipe, 402 - Annular pipe, 402a - Second nozzle, 402b - Third connecting pipe, 403 - Air inlet pipe, 403a - Air collecting hood, 404 - Stirring motor, 404a - Stirring shaft, 404b - Stirring blade. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0040] Example 1

[0041] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown in , , , , , , , , , , , , , , , , , , , and , the first embodiment of the present utility model is provided. This embodiment provides a waste water freezing crystallization concentration device, which includes a filtration tank 1 and a condensation tank 2 fixedly connected above the filtration tank 1. A filtration component 3 is arranged inside the filtration tank 1. The filtration component 3 includes a mounting plate 301, mounting columns 302, filter plates 303, eccentric wheels 304 and flushing pipes 306. The eccentric wheels 304 drive the mounting plate 301 and the filter plates 303 to vibrate, so that the crystals on the filter plates 303 are evenly distributed, and the crystals are washed and dried through the flushing pipes 306, solving the problem that the existing separation of crystals is not convenient for washing and drying.

[0042] Specifically, the mounting plate 301 is respectively movably connected to both sides inside the filtration tank 1 through the mounting columns 302. The filter plates 303 are clamped between adjacent mounting plates 301. The front and rear ends of the lower surface of the mounting plate 301 are in contact with the eccentric wheels 304. Flushing pipes 306 are fixedly connected above the mounting plates 301. One side of the eccentric wheel 304 is fixedly connected with a mounting rod 304a. The end of the mounting rod 304a away from the eccentric wheel 304 rotates through the outer wall of the filtration tank 1 and is fixedly connected with a first bevel gear 304b. A plurality of first nozzles 306a are fixedly communicated with one side of the flushing pipe 306 at equal intervals. The mounting plate 301 is used to mount the filter plates 303. The mounting columns 302 are used to mount the mounting plate 301. The filter plates 303 are used to separate the concentrated liquid and crystals. The eccentric wheels 304 are used to drive the mounting plate 301 and the filter plates 303 to vibrate. The mounting rod 304a is used to drive the eccentric wheel 304 to rotate. The first bevel gear 304b is used to drive the mounting rod 304a to rotate. The flushing pipe 306 is used to provide cleaning liquid or hot air to the crystals, realizing the washing and drying of the crystals. The first nozzles 306a are used to spray the liquid or gas in the flushing pipe 306 onto the crystals.

[0043] Furthermore, a material taking port 101 is opened on the front end face of the filtration tank 1. A sealing cover plate 102 is clamped inside the material taking port 101. A feed pipe 201 is fixedly communicated with the top of the condensation tank 2. A discharge pipe 202 is fixedly communicated with the bottom of the condensation tank 2. The bottom end of the discharge pipe 202 penetrates through the top of the filtration tank 1 and extends to the upper inner side of the filtration tank 1. A discharge valve 203 is arranged on the discharge pipe 202;

[0044] On the outer walls of the mounting plates 301 close to each other, grooves 301a are formed. Inside the grooves 301a, bumps 303a are fitted with clearance. One side of the bumps 303a penetrates through the grooves 301a and is welded to the outer walls on both sides of the filter plate 303 respectively;

[0045] The bottom end of the mounting post 302 is fixedly connected to the inner bottom of the filter box 1. An activity post 302a passes through the mounting post 302 movably. The top end of the activity post 302a is welded to a connecting plate 302b. The upper surface of the connecting plate 302b is fixedly connected to the lower surface of the mounting plate 301. The bottom end of the activity post 302a is welded to a piston plate 302c. The lower surface of the piston plate 302c is fixedly connected to a return spring 302d. The bottom end of the return spring 302d is fixedly connected to the inner bottom of the mounting post 302;

[0046] At the front and rear ends of the upper surface of the mounting plate 301, mounting frames 301b are fixedly connected respectively. At the center position of the upper surface of the mounting plate 301, a diversion block 301c is fixedly connected. Both ends of the flushing pipe 306 are fixedly connected to the inside of the mounting frame 301b. The top of the flushing pipe 306 is fixedly communicated with a telescopic hose 306b. The top end of the telescopic hose 306b penetrates through the top of the filter box 1 and is fixedly communicated with an air outlet pipe 306d and a water outlet pipe 306e through a three-way valve 306c;

[0047] Above the upper parts of the outer walls on both sides of the filter box 1, mounting boxes 307 are fixedly connected respectively. Inside the mounting boxes 307, a water storage cavity 307a and a heating cavity 307b are arranged. At the inner bottom of the water storage cavity 307a, a submersible pump 306f is fixedly connected. The water outlet end of the submersible pump 306f is fixedly communicated with the bottom end of the water outlet pipe 306e. Inside the heating cavity 307b, a plurality of electric radiation pipes 307c are fixedly connected. Inside the air inlet of the heating cavity 307b, a blower 307d is fixedly connected. The bottom end of the air outlet pipe 306d penetrates through the top of the mounting box 307 and extends to the upper part inside the heating cavity 307b;

[0048] At the center positions of the outer walls on both sides of the filter box 1, a double-shaft motor 305 is fixedly connected through motor brackets 305a. At the front and rear ends of the outer walls on both sides of the filter box 1, bearing seats 305b are fixedly connected respectively. The output shafts of the double-shaft motor 305 are fixedly connected with rotating shafts 305c. The ends of the rotating shafts 305c far from the double-shaft motor 305 rotate through the bearing seats 305b and are fixedly connected with second bevel gears 305d. The first bevel gear 304b and the second bevel gear 305d mesh with each other.

[0049] The operation process of this embodiment is as follows: First, the wastewater is added into the condensation tank 2 through the feed pipe 201, and the wastewater is cooled by the refrigeration structure in the condensation tank 2 to make the wastewater freeze and crystallize. Then, the discharge valve 203 is opened, so that the mixture of the concentrated liquid and crystals in the condensation tank 2 enters the filtration box 1 through the discharge pipe 202, and the concentrated liquid and crystals are screened by the filter plate 303. Finally, the double-shaft motor 305 is started. The output shaft of the double-shaft motor 305 drives the second bevel gear 305d to rotate through the rotating shaft 305c. The second bevel gear 305d drives the eccentric wheel 304 to rotate through the first bevel gear 304b and the mounting rod 304a. The upward force is periodically applied to the mounting plate 301 through the rotation of the eccentric wheel 304, so that the mounting plate 301 drives the filter plate 303 to vibrate, thereby making the crystals on the filter plate 303 evenly distributed. At the same time, the submersible pump 306f is started, so that the cleaning water in the water storage cavity 307a is sprayed on the crystals through the flushing pipe 306 and the first nozzle 306a, realizing the washing of the crystals. After the washing is completed, the submersible pump 306f is turned off and the electric radiant tube 307c and the blower 307d are started, so that the flushing pipe 306 and the first nozzle 306a spray hot air on the crystals, realizing the drying of the crystals.

[0050] Embodiment 2

[0051] Please refer to Figure 1 、 Figure 9 、 Figure 10 and Figure 11 As shown in

[0052] Specifically, the treatment tank 401 is located at the front end of the filtration tank 1. A circular pipe 402 is fixedly connected to the lower part inside the treatment tank 401. A plurality of second nozzles 402a are fixedly communicated with the top of the circular pipe 402 at equal intervals. Third connecting pipes 402b are fixedly communicated with both sides of the circular pipe 402. One end of the third connecting pipe 402b far from the circular pipe 402 is fixedly communicated with an air inlet pipe 403. One end of the air inlet pipe 403 far from the third connecting pipe 402b penetrates through the top of the filtration tank 1 and is fixedly communicated with an air collecting hood 403a. The treatment tank 401 is provided to heat the separated concentrated liquid to make it in a saturated state, which is convenient for the next-stage freeze crystallization of the concentrated liquid. The circular pipe 402 and the second nozzles 402a are provided to uniformly supply hot air into the treatment tank 401. The air inlet pipe 403 is provided to convey the residual hot air in the filtration tank 1 into the circular pipe 402. The air collecting hood 403a is provided to collect the residual hot air in the filtration tank 1, and a filter screen is additionally provided in the air collecting hood 403a to filter the hot air.

[0053] Further, a first connecting pipe 401a is fixedly communicated with the lower part of the rear end face of the treatment tank 401. The rear end of the first connecting pipe 401a penetrates through the lower part of the front end face of the filtration tank 1 and extends to the inside of the filtration tank 1. A second connecting pipe 401b is fixedly communicated with the lower part of the front end face of the treatment tank 401;

[0054] A stirring motor 404 is fixedly connected to the top of the treatment tank 401. The output shaft of the stirring motor 404 rotates through the top of the treatment tank 401 and is fixedly connected with a stirring shaft 404a. A plurality of stirring blades 404b are sleeved on the outer wall of the stirring shaft 404a.

[0055] The remaining structure is the same as that of Embodiment 1.

[0056] The operation process of this embodiment is as follows: The concentrated liquid screened in the filtration tank 1 enters the treatment tank 401 through the first connecting pipe 401a. The residual hot air in the filtration tank 1 enters the air inlet pipe 403 through the air collecting hood 403a, enters the circular pipe 402 through the air inlet pipe 403, and finally the hot air is uniformly introduced into the treatment tank 401 through the second nozzles 402a. Then, the stirring motor 404 is started. The output shaft of the stirring motor 404 drives the stirring blades 404b through the stirring shaft 404a to stir the concentrated liquid, so that the concentrated liquid and the hot air are in uniform contact, improving the heating efficiency of the concentrated liquid. The concentrated liquid in a saturated state after heating then enters the next-stage equipment through the second connecting pipe 401b for secondary freeze crystallization.

[0057] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0058] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not elaborate all the details, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. Wastewater freezing crystallization concentration device, comprising a filtration tank (1) and a condensation tank (2) fixedly connected above the filtration tank (1), characterized in that: A filter component (3) is arranged inside the filter box (1), and a discharge component (4) is also arranged at the front end of the filter box (1); The filter component (3) includes mounting plates (301) respectively movably connected to both sides inside the filter box (1) through mounting posts (302), and filter plates (303) are clamped between adjacent mounting plates (301). The front and rear ends of the lower surface of the mounting plate (301) are both in contact connection with eccentric wheels (304), and flushing pipes (306) are fixedly connected above the mounting plates (301). One side of the eccentric wheel (304) is fixedly connected with a mounting rod (304a), and the end of the mounting rod (304a) away from the eccentric wheel (304) rotates through the outer wall of the filter box (1) and is fixedly connected with a first bevel gear (304b). A plurality of first nozzles (306a) are fixedly communicated with one side of the flushing pipe (306) at equal intervals; The discharge component (4) includes a processing box (401) located at the front end of the filter box (1), and an annular pipe (402) is fixedly connected to the lower part inside the processing box (401). A plurality of second nozzles (402a) are fixedly communicated with the top of the annular pipe (402) at equal intervals, and third connecting pipes (402b) are fixedly communicated with both sides of the annular pipe (402). The end of the third connecting pipe (402b) away from the annular pipe (402) is fixedly communicated with an air inlet pipe (403), and the end of the air inlet pipe (403) away from the third connecting pipe (402b) penetrates through the top of the filter box (1) and is fixedly communicated with an air collecting hood (403a).

2. The wastewater freezing crystallization concentration device according to claim 1, wherein A material taking port (101) is opened on the front end face of the filter box (1), and a sealing cover plate (102) is clamped inside the material taking port (101). A feed pipe (201) is fixedly communicated with the top of the condensation tank (2), and a discharge pipe (202) is fixedly communicated with the bottom of the condensation tank (2). The bottom end of the discharge pipe (202) penetrates through the top of the filter box (1) and extends to the upper inner side of the filter box (1), and a discharge valve (203) is arranged on the discharge pipe (202).

3. The wastewater freezing crystallization concentration device according to claim 1, wherein, Grooves (301a) are opened on the outer walls of the mounting plates (301) close to each other, and bumps (303a) are in clearance fit with the inside of the grooves (301a). One side of the bump (303a) penetrates through the groove (301a) and is respectively welded to the outer walls on both sides of the filter plate (303).

4. The wastewater freezing crystallization concentration device according to claim 1, wherein The bottom end of the mounting post (302) is fixedly connected to the inner bottom of the filter box (1), and a movable post (302a) movably penetrates through the inside of the mounting post (302). The top end of the movable post (302a) is welded with a connecting plate (302b), and the upper surface of the connecting plate (302b) is fixedly connected to the lower surface of the mounting plate (301). The bottom end of the movable post (302a) is welded with a piston plate (302c), and a return spring (302d) is fixedly connected to the lower surface of the piston plate (302c). The bottom end of the return spring (302d) is fixedly connected to the inner bottom of the mounting post (302).

5. The wastewater freezing crystallization concentration device according to claim 1, characterized in that, On the front and rear ends of the upper surface of the mounting plate (301), mounting brackets (301b) are fixedly connected, and at the central position of the upper surface of the mounting plate (301), a diversion block (301c) is fixedly connected. Both ends of the flushing pipe (306) are fixedly connected to the inner sides of the mounting brackets (301b), and at the top of the flushing pipe (306), a telescopic hose (306b) is fixedly connected. The top end of the telescopic hose (306b) penetrates through the top of the filter box (1) and is fixedly connected to an air outlet pipe (306d) and a water outlet pipe (306e) through a three-way valve (306c).

6. The wastewater freezing crystallization concentration device according to claim 5, characterized in that, On the upper sides of the outer walls on both sides of the filter box (1), mounting boxes (307) are fixedly connected, and inside the mounting boxes (307), a water storage chamber (307a) and a heating chamber (307b) are provided. At the inner bottom of the water storage chamber (307a), a submersible pump (306f) is fixedly connected, and the water outlet end of the submersible pump (306f) is fixedly connected to the bottom end of the water outlet pipe (306e). Inside the heating chamber (307b), a plurality of electric radiation tubes (307c) are fixedly connected, and inside the air inlet of the heating chamber (307b), a blower (307d) is fixedly connected. The bottom end of the air outlet pipe (306d) penetrates through the top of the mounting box (307) and extends to the upper inner side of the heating chamber (307b).

7. The wastewater freezing crystallization concentration device according to claim 1, characterized in that, At the central positions of the outer walls on both sides of the filter box (1), a double-shaft motor (305) is fixedly connected through motor brackets (305a), and at the front and rear ends of the outer walls on both sides of the filter box (1), bearing seats (305b) are fixedly connected. The output shafts of the double-shaft motor (305) are fixedly connected with rotating shafts (305c), and the ends of the rotating shafts (305c) away from the double-shaft motor (305) rotate through the bearing seats (305b) and are fixedly connected with second bevel gears (305d). The first bevel gear (304b) and the second bevel gear (305d) are meshed with each other.

8. The wastewater freezing crystallization concentration device according to claim 1, characterized in that Below the rear end face of the treatment box (401), a first connecting pipe (401a) is fixedly connected, and the rear end of the first connecting pipe (401a) penetrates through the lower front end face of the filter box (1) and extends to the inside of the filter box (1). Below the front end face of the treatment box (401), a second connecting pipe (401b) is fixedly connected.

9. The wastewater freezing crystallization concentration device according to claim 8, wherein, On the top of the treatment box (401), a stirring motor (404) is fixedly connected, and the output shaft of the stirring motor (404) rotates through the top of the treatment box (401) and is fixedly connected with a stirring shaft (404a). A plurality of stirring blades (404b) are sleeved on the outer wall of the stirring shaft (404a).

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