Electrolytic tank for electrolysis of hydrochloric acid wastewater

Abstract

The utility model discloses an electrolytic tank for electrolysis of hydrochloric acid wastewater, and relates to the technical field of wastewater treatment. The device comprises an electrolysis mechanism, the electrolysis mechanism comprises a box body, polar plates are detachably fixed to the left side wall and the right side wall in the box body, a scraping plate is arranged between the two polar plates, an electric push rod is arranged above the scraping plate, a moving block is fixed to the upper end of the electric push rod, and a motor is arranged on the left side of the moving block; a threaded rod is fixed on a power output shaft of the motor; and a filtering mechanism is arranged behind the electrolysis mechanism and comprises a material box, a filtering box is fixed to the position, corresponding to the upper wall of the box body, in front of the material box, a fine filtering plate and a rough filtering plate are sequentially arranged in the filtering box from bottom to top, and a conveying pump is fixed to the front wall of the filtering box. Pollutants on the side wall of the polar plate and the inner wall of the electrolytic tank are scraped through cooperation of the electric push rod, the motor and the scraper, and large impurities about to enter the electrolytic tank are filtered through the coarse filter plate and the fine filter plate.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to an electrolytic cell for the electrolysis of hydrochloric acid wastewater. Background Technology

[0002] Hydrochloric acid is also used for pickling steel, preparing inorganic and organic compounds (such as vinyl chloride, a precursor to PVC plastic), and for household cleaning, producing gelatin and other food additives, descaling agents, and leather processing. Hydrochloric acid wastewater mainly comes from pickling, cleaning, and production processes in industries such as steel, electroplating, chemicals, and rare earths. Because hydrochloric acid wastewater is corrosive and polluting, and harmful to the environment and human health, it needs to be treated before discharge. Electrolysis is one method of treating hydrochloric acid wastewater. It can not only effectively remove pollutants from high-salt wastewater and reduce the salt content, but also recover the byproducts chlorine and hydrogen produced during electrolysis.

[0003] Existing technologies for electrolyzing hydrochloric acid wastewater are carried out inside an electrolytic cell. However, in actual use, large impurities in the hydrochloric acid wastewater enter the electrolytic cell, making cleaning the cell inconvenient. In addition, in existing technologies, pollutants after the hydrochloric acid wastewater is electrolyzed adhere to the surface of the electrode plates, affecting the electrolysis efficiency of the electrode plates.

[0004] To address these issues, we provide an electrolytic cell for the electrolysis of hydrochloric acid wastewater. Utility Model Content

[0005] The purpose of this invention is to provide an electrolytic cell for the electrolysis of hydrochloric acid wastewater. Through the cooperation of an electric push rod, a motor, and a scraper, contaminants are scraped off from the sidewalls of the electrode plates and the inner wall of the electrolytic cell. Furthermore, coarse and fine filter plates filter larger impurities that are about to enter the electrolytic cell. This solves the problem in existing technologies where larger impurities in hydrochloric acid wastewater enter the electrolytic cell, making cleaning inconvenient. Additionally, in existing technologies, contaminants adhere to the surface of the electrode plates after electrolysis, affecting the electrolysis efficiency of the electrode plates.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] This utility model is an electrolytic cell for electrolyzing hydrochloric acid wastewater, including an electrolysis mechanism. The electrolysis mechanism includes a box body, on which electrode plates are detachably fixed on both the left and right side walls. A scraper is arranged between two electrode plates, and an electric push rod is arranged above the scraper. A moving block is fixed to the upper end of the electric push rod. A motor is arranged to the left of the moving block. A threaded rod is fixed on the power output shaft of the motor, and the threaded rod is threadedly connected to the moving block.

[0008] A filtration mechanism is provided behind the electrolysis mechanism. The filtration mechanism includes a material box, and a filter box is fixed in front of the material box corresponding to the upper wall of the box body. A fine filter plate and a coarse filter plate are arranged in sequence from bottom to top inside the filter box. A conveying pump is fixed to the front wall of the filter box.

[0009] The present invention is further configured such that each of the four corner positions of the lower wall of the box is fixed with a screw sleeve, the screw sleeve is internally threaded with a screw rod, and the bottom of the screw rod is fixed with a base plate.

[0010] The present invention is further configured such that a drain trough is provided at the lower end of both the left and right sides of the box body, a side plate is provided on the outer side of the drain trough, the side plate is rotatably connected to the box body by a hinge, and the hinge is located at the upper end of the side plate. A bolt is provided at the lower end of the side plate, and the bolt is threadedly connected to the box body.

[0011] The present invention is further configured such that the lower ends of the left and right sidewalls of the scraper are symmetrically fixed with bosses, the cross-section of the bosses is triangular, the upper wall of the scraper is fixed with a connecting plate, and the connecting plate is fixedly connected to the electric push rod.

[0012] The present invention is further configured such that guide rods are fixed at the front and rear of the electric push rod corresponding to the upper wall of the connecting plate, and guide sleeves are provided on the outer side of the guide rods with clearance fit, and the upper end of the guide sleeves is fixedly connected to the moving block.

[0013] The present invention is further configured such that a mounting bracket is fixed to the upper wall of the housing, and the mounting bracket is U-shaped; the motor is fixedly connected to the mounting bracket; the moving block is slidably connected to the mounting bracket; and the right end of the threaded rod is rotatably connected to the mounting bracket via a bearing.

[0014] The present invention is further configured such that a support strip is fixed below the fine filter plate corresponding to the inner wall of the filter box, and the support strip is arranged in a U-shape, and the filter box is fixedly connected to the box body.

[0015] The present invention is further configured such that a discharge pipe is fixed below the fine filter plate corresponding to the front wall of the filter box, a delivery pipe is fixed at both the inlet and outlet ends of the delivery pump, the other end of the delivery pipe at the outlet end of the delivery pump is fixed above the coarse filter plate corresponding to the side wall of the filter box, and the other end of the delivery pipe at the inlet end of the delivery pump is fixed at the lower end of the front wall of the material box.

[0016] This utility model has the following beneficial effects:

[0017] This invention utilizes a coarse filter plate and a fine filter plate. A pump transports hydrochloric acid wastewater from the material tank to the filter box. The coarse filter plate filters out larger impurities in the hydrochloric acid wastewater, and the fine filter plate filters out smaller impurities. This reduces the amount of impurities in the hydrochloric acid wastewater entering the filter box, making it easier to clean the inside of the filter box after use. This solves the problem in existing technologies where larger impurities in the hydrochloric acid wastewater enter the electrolytic cell, making cleaning the electrolytic cell inconvenient.

[0018] This invention, by incorporating an electric push rod, a motor, and a scraper, moves the scraper to remove contaminants from the lower wall of the tank by operating the motor. Furthermore, after the scraper is moved to a suitable position, the electric push rod further removes contaminants from the electrode surface, preventing excessive contaminant adhesion. This solves the problem in existing technologies where contaminants adhere to the electrode surface after hydrochloric acid wastewater electrolysis, affecting the electrolysis efficiency of the electrodes.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is an overall structural diagram of an electrolytic cell used for the electrolysis of hydrochloric acid wastewater.

[0022] Figure 2 This is a structural diagram of the electrolysis mechanism.

[0023] Figure 3 This is a structural diagram of the electrolysis mechanism after the side plate is opened.

[0024] Figure 4 This is a structural diagram of the filtration mechanism.

[0025] Figure 5 This is an exploded view of the filtration mechanism.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1-Electrolysis mechanism, 101-Box body, 101a-Screw sleeve, 101b-Mounting bracket, 101c-Drainage trough, 102-Screw, 102a-Base plate, 103-Side plate, 103a-Bolt, 104-Scraper, 104a-Boss, 105-Electric push rod, 106-Connecting plate, 106a-Guide rod, 107-Moving block, 107a-Guide sleeve, 108-Motor, 108a-Threaded rod, 109-Electric plate, 2-Filtration mechanism, 201-Coarse filter plate, 202-Filter box, 202a-Discharge pipe, 202b-Bearing bar, 203-Transfer pump, 203a-Transfer pipe, 204-Material box, 205-Fine filter plate. Detailed Implementation

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0029] Please see Figure 1-3 This utility model relates to an electrolytic cell for electrolyzing hydrochloric acid wastewater, comprising an electrolysis mechanism 1. The electrolysis mechanism 1 includes a housing 101, on which electrode plates 109 are detachably fixed on both the left and right side walls, namely a cathode plate 109 and an anode plate 109. A scraper 104 is disposed between the two electrode plates 109. Under normal conditions, the scraper 104 is located above the housing 101 and does not come into contact with the hydrochloric acid wastewater. The scraper 104 is made of corrosion-resistant material. An electric push rod 105 is disposed above the scraper 104 for driving the scraper 104 to move vertically. A movable block 107 is fixed to the upper end of the movable push rod 105. A motor 108 is provided to the left of the movable block 107 for moving the scraper 104 in the left and right directions. A threaded rod 108a is fixed on the power output shaft of the motor 108, and the threaded rod 108a is threadedly connected to the movable block 107. With the above configuration, the motor 108 drives the threaded rod 108a to rotate, which causes the movable block 107 to move, thereby driving the electric push rod 105 to move, which in turn causes the scraper 104 to move in the left and right directions. The electric push rod 105 also causes the scraper 104 to move in the up and down directions.

[0030] Specifically, each of the four corners of the lower wall of the housing 101 is fixed with a screw sleeve 101a. The screw sleeve 101a is internally threaded with a screw rod 102. The bottom of the screw rod 102 is fixed with a base plate 102a. With the above arrangement, the screw rod 102 is rotated by rotating the base plate 102a. With the cooperation of the corresponding screw sleeve 101a, the base plate 102a can be moved up and down when it rotates until all four base plates 102a are in contact with the ground. This allows the electrolytic cell for hydrochloric acid wastewater electrolysis to be stably installed on the ground.

[0031] The lower ends of both sides of the housing 101 are provided with drainage troughs 101c. Side plates 103 are provided on the outer side of the drainage troughs 101c. The side plates 103 are rotatably connected to the housing 101 by hinges, and the hinges are located at the upper end of the side plates 103. Bolts 103a are provided at the lower end of the side plates 103, and bolts 103a are threadedly connected to the housing 101. A sealing gasket can also be fixed between the side plates 103 and the housing 101 to prevent leakage. With the above configuration, after the inner wall of the electrode plate 109 and the housing 101 is scraped, the contaminants are transported to the rectangular groove by the scraper 104. By removing the bolts 103a and rotating the side plates 103 to expose the rectangular groove, the contaminants can be cleaned.

[0032] The scraper 104 has symmetrical bosses 104a fixed at the lower ends of the left and right side walls. The cross-section of the bosses 104a is triangular. The upper wall of the scraper 104 has a connecting plate 106 fixed, and the connecting plate 106 is fixedly connected to the electric push rod 105. With the above configuration, when scraping the electrode plate 109, the edge of the bosses 104a contacts the surface of the electrode plate 109 for scraping.

[0033] Guide rods 106a are fixed to the upper walls of the connecting plate 106 at the front and rear of the electric push rod 105. A guide sleeve 107a is provided on the outer side of the guide rod 106a with clearance, and the upper end of the guide sleeve 107a is fixedly connected to the moving block 107. With the above arrangement, the scraper 104 can only move up and down through the cooperation of the guide rod 106a and the guide sleeve 107a, which improves the stability of the scraper 104 during use.

[0034] A mounting bracket 101b is fixed to the upper wall of the housing 101, and the mounting bracket 101b is U-shaped. The motor 108 is fixedly connected to the mounting bracket 101b, and the moving block 107 is slidably connected to the mounting bracket 101b, so that the moving block 107 can move left and right accordingly when the threaded rod 108a rotates. The right end of the threaded rod 108a is rotatably connected to the mounting bracket 101b through a bearing, which improves the connection stability between the threaded rod 108a and the mounting bracket 101b.

[0035] Furthermore, the lower side of the housing 101 is also provided with a discharge valve for discharging hydrochloric acid after the motor 108, and a controller is also fixed on the side wall of the mounting bracket 101b.

[0036] The operation process of this embodiment is as follows: After an appropriate amount of hydrochloric acid wastewater enters the tank 101, it is electrolyzed through two electrode plates 109. After electrolysis, the two electrode plates 109 are de-energized, and the discharge valve is opened to discharge the electrolyzed hydrochloric acid wastewater. At this time, the electric push rod 105 is operated by the controller until the boss 104a is at a suitable height. Then, the motor 108 is operated to drive the threaded rod 108a to rotate. Under the action of the moving block 107, the boss 104a on the scraper 104 and the electrode plate 109 are finally aligned. When the contact occurs, the electric push rod 105 is activated, causing the boss 104a on the scraper 104 to move from top to bottom to scrape off the contaminants on the scraper 104. This method is then used to scrape off the contaminants on the surface of the other electrode plate 109. Finally, when the bottom of the scraper 104 contacts the lower wall inside the housing 101, the motor 108 is activated to move the scraper 104, thereby scraping off the contaminants on the lower wall inside the housing 101 to the vicinity of the rectangular groove. The contaminants can then be cleaned by removing the bolt 103a and rotating the side plate 103. Example 2

[0037] Please see Figure 1 , 4 5. This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the first embodiment in that: a filter mechanism 2 is provided behind the electrolysis mechanism 1. The filter mechanism 2 includes a material box 204 for storing hydrochloric acid wastewater to be filtered. A filter box 202 is fixed in front of the material box 204 corresponding to the upper wall of the box body 101. A fine filter plate 205 and a coarse filter plate 201 are arranged sequentially from bottom to top inside the filter box 202 to perform coarse filtration and fine filtration on the hydrochloric acid wastewater, respectively. A delivery pump 203 is fixed in front of the filter box 202 for transporting the hydrochloric acid wastewater inside the material box 204 to the filter box 202.

[0038] Specifically, a support strip 202b is fixed below the fine filter plate 205 corresponding to the inner wall of the filter box 202, providing a platform for the fine filter plate 205. The support strip 202b is U-shaped, and the filter box 202 is fixedly connected to the box body 101.

[0039] Below the fine filter plate 205, a discharge pipe 202a is fixed to the front wall of the filter box 202. The interior of the discharge pipe 202a is connected to the interior of the filter box 202. Both the inlet and outlet ends of the delivery pump 203 are fixed with delivery pipes 203a. The other end of the delivery pipe 203a at the outlet end of the delivery pump 203 is fixed to the side wall of the filter box 202 above the coarse filter plate 201. The other end of the delivery pipe 203a at the inlet end of the delivery pump 203 is fixed to the lower end of the front wall of the material box 204. The interiors of the two delivery pipes 203a are connected to the interiors of the filter box 202 and the material box 204, respectively. The above arrangement enables the water pump to work and transport the hydrochloric acid wastewater inside the material box 204 to the filter box 202.

[0040] The remaining structure is the same as in Example 1;

[0041] The operation process of this embodiment is as follows: During filtration, the hydrochloric acid wastewater to be filtered is first poured into the material tank 204, and then the controller is operated to make the water pump work, so that the hydrochloric acid wastewater inside the material tank 204 is transported to the inside of the filter box 202. After the coarse filter plate 201 and the fine filter plate 205 filter the larger and smaller impurities in the hydrochloric acid wastewater, the hydrochloric acid wastewater passes through the discharge pipe 202a and enters the inside of the box 101.

[0042] In addition, all electrical appliances used in the electrolytic cell for hydrochloric acid wastewater electrolysis are electrically connected to the controller via conductive wires, and the controller is electrically connected to an external power source via conductive wires. Furthermore, both the controller and the electrical appliances are existing technologies, and their models are not limited here.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electrolytic cell for electrolyzing hydrochloric acid wastewater, comprising an electrolysis mechanism (1), characterized in that: The electrolysis mechanism (1) includes a housing (101). The left and right side walls inside the housing (101) are detachably fixed with electrode plates (109). A scraper (104) is provided between the two electrode plates (109). An electric push rod (105) is provided above the scraper (104). A moving block (107) is fixed at the upper end of the electric push rod (105). A motor (108) is provided to the left of the moving block (107). A threaded rod (108a) is fixed on the power output shaft of the motor (108), and the threaded rod (108a) is threadedly connected to the moving block (107). A filtration mechanism (2) is provided behind the electrolysis mechanism (1). The filtration mechanism (2) includes a material box (204). A filter box (202) is fixed in front of the material box (204) corresponding to the upper wall of the box body (101). A fine filter plate (205) and a coarse filter plate (201) are arranged in sequence from bottom to top inside the filter box (202). A conveying pump (203) is fixed in front of the filter box (202).

2. The electrolytic cell for hydrochloric acid wastewater electrolysis according to claim 1, characterized in that: Screw sleeves (101a) are fixed at the four corners of the lower wall of the box (101). The screw sleeves (101a) are connected to the screw rods (102) by internal threads. The bottom of the screw rods (102) is fixed with a base plate (102a).

3. An electrolytic cell for hydrochloric acid wastewater electrolysis according to claim 2, characterized in that: The lower ends of the left and right sides of the box (101) are provided with drainage troughs (101c). Side plates (103) are provided on the outer side of the drainage troughs (101c). The side plates (103) are rotatably connected to the box (101) by hinges, and the hinges are located at the upper end of the side plates (103). The lower end of the side plates (103) is provided with bolts (103a), and the bolts (103a) are threadedly connected to the box (101).

4. An electrolytic cell for hydrochloric acid wastewater electrolysis according to claim 1, characterized in that: The scraper (104) has symmetrical bosses (104a) fixed at the lower ends of the left and right side walls. The cross-section of the bosses (104a) is triangular. The upper wall of the scraper (104) is fixed with a connecting plate (106), and the connecting plate (106) is fixedly connected to the electric push rod (105).

5. An electrolytic cell for hydrochloric acid wastewater electrolysis according to claim 4, characterized in that: Guide rods (106a) are fixed to the front and rear of the electric push rod (105) corresponding to the upper wall of the connecting plate (106). A guide sleeve (107a) is provided on the outer clearance of the guide rod (106a), and the upper end of the guide sleeve (107a) is fixedly connected to the moving block (107).

6. An electrolytic cell for hydrochloric acid wastewater electrolysis according to claim 5, characterized in that: The upper wall of the housing (101) is fixed with a mounting bracket (101b), and the mounting bracket (101b) is U-shaped. The motor (108) is fixedly connected to the mounting bracket (101b), the moving block (107) is slidably connected to the mounting bracket (101b), and the right end of the threaded rod (108a) is rotatably connected to the mounting bracket (101b) through a bearing.

7. An electrolytic cell for hydrochloric acid wastewater electrolysis according to claim 1, characterized in that: Below the fine filter plate (205), a support strip (202b) is fixed to the inner wall of the filter box (202), and the support strip (202b) is arranged in a U-shape. The filter box (202) is fixedly connected to the box body (101).

8. An electrolytic cell for hydrochloric acid wastewater electrolysis according to claim 7, characterized in that: A discharge pipe (202a) is fixed below the fine filter plate (205) corresponding to the front wall of the filter box (202). A delivery pipe (203a) is fixed at both the inlet and outlet ends of the delivery pump (203). The other end of the delivery pipe (203a) at the outlet end of the delivery pump (203) is fixed above the coarse filter plate (201) on the side wall corresponding to the filter box (202). The other end of the delivery pipe (203a) at the inlet end of the delivery pump (203) is fixed at the lower end of the front wall of the material box (204).

Images