Circulating water treatment device

Abstract

The utility model discloses a circulating water treatment device. The circulating water treatment device comprises a rack, a water treater arranged on the rack and a control box electrically connected with the water treater, the water treater is fixed on the rack through an L-shaped fixing piece; the water treater comprises a lower main pipe arranged on the rack and an upper main pipe arranged on the lower main pipe; a water inlet is formed in the side wall of the lower main pipe and serves as a total inlet end of the equipment, and a water outlet is formed in the side wall of the upper main pipe and serves as a total outlet end of the equipment; and the lower main pipe is also provided with a positive electrode assembly and a negative electrode assembly. According to the circulating water treatment device, a pure physical method is adopted, the environmental protection requirement is completely met, a bypass flow mode is adopted, namely, a part of circulating water is led out to be treated, and then the treated circulating water is sent back to an original system, and the mode is easy and convenient to install, small in occupied space and capable of saving electricity.

Description

Technical Field

[0001] The utility model belongs to the technical field of circulating water treatment, and specifically relates to a circulating water treatment device. Background Art

[0002] The cooling circulating water in the heat exchange, refrigeration and civil central air conditioning systems in industrial production is generally prone to scaling and algae growth in the system pipes and equipment due to long-term repeated use. This phenomenon will lead to reduced efficiency of the system's heat exchanger, reduced water flow section, increased water resistance, reduced water flow, and increased energy consumption. In severe cases, it will also cause system abnormalities and premature equipment scrapping, resulting in increased corporate expenses, reduced production capacity, and shutdowns, causing great trouble and impact on production and life. For this problem, the traditional treatment method is to use chemical scale inhibitors and bactericides. This method requires both precise control of treatment equipment and daily maintenance by professional technicians, which costs a lot of financial and human resources. In addition, the water containing the agent needs to be treated again in the later stage, and can only be discharged after the water quality meets the standard, which increases the user's operation and maintenance costs. With the continuous improvement of environmental protection requirements today, this method is obviously not in line with the requirements of the times. Utility Model Content

[0003] In order to overcome the high maintenance accuracy requirements of the circulating water treatment device in the prior art, the large financial and human cost, and the complicated processing procedures, the utility model provides the following technical solutions:

[0004] A circulating water treatment device comprises: a frame, a water treatment device arranged on the frame, and a control box electrically connected to the water treatment device; the water treatment device is fixed to the frame by an L-shaped fixing member;

[0005] The water treatment device comprises a lower main pipe arranged on a frame and an upper main pipe arranged on the lower main pipe;

[0006] The side wall of the lower main pipe is provided with a water inlet, which is the total inlet end of the equipment, and the side wall of the upper main pipe is provided with a water outlet, which is the total outlet end of the equipment; the lower main pipe is also provided with a positive electrode assembly and a negative electrode assembly.

[0007] Further, the lower main pipe is tubular, with a left flange and a left blind plate provided at its left end, and a right flange and a right blind plate provided at its right end; and a lower main pipe connecting flange provided at its upper end;

[0008] The lower main pipe connecting flange and the upper side wall of the lower main pipe are integrally formed; the left flange and the left pipe opening of the lower main pipe are integrally formed, the left blind plate is fixed to the left flange through a fixing member, and the arrangement of the right flange and the right blind plate is the same as that of the left flange and the left blind plate;

[0009] There are two L-shaped fixing members, the vertical sections of which are respectively welded to the lower ends of the left flange and the right flange, and the horizontal sections of which are fixed to the upper surface of the frame through fixing members.

[0010] Further, the positive electrode assembly includes: a positive electrode rod horizontally inserted into the left blind plate and a positive electrode nylon seal disposed between the left blind plate and the positive electrode rod;

[0011] The left blind plate is provided with a positive electrode rod through hole, the positive electrode rod is inserted into the positive electrode rod through hole, and the positive electrode nylon seal is arranged in the gap between the positive electrode rod and the positive electrode rod through hole, and is used to fasten and seal the gap;

[0012] The negative electrode assembly comprises: a negative electrode rod horizontally inserted into the side wall of the lower main pipe and a negative electrode nylon seal disposed between the lower main pipe and the negative electrode rod;

[0013] A negative electrode rod through hole is provided on the side wall of the lower main pipe, the negative electrode rod is inserted into the negative electrode rod through hole, and the negative electrode nylon seal is arranged in the gap between the negative electrode rod and the negative electrode rod through hole to fasten and seal the gap.

[0014] Furthermore, the negative electrode rod is cylindrical, and its side wall protrudes outward to form a limiting boss; the negative electrode nylon seal comprises: an outer nylon seal fixedly sealing the gap between the outer wall of the lower main pipe and the negative electrode rod, and an inner nylon seal fixedly sealing the gap between the inner wall of the lower main pipe and the negative electrode rod;

[0015] The outer nylon seal and the inner nylon seal are both L-shaped, the horizontal section of the outer nylon seal is inserted into the gap between the outer wall of the lower main pipe and the negative electrode rod, and the vertical section abuts against the outer side wall of the lower main pipe;

[0016] The horizontal section of the inner nylon seal is inserted into the gap between the inner wall of the lower main pipe and the negative electrode rod, and the vertical section abuts between the inner wall of the lower main pipe and the limiting boss;

[0017] The structure and arrangement of the positive electrode rod are the same as those of the negative electrode rod, and the structure and arrangement of the positive electrode nylon component are the same as those of the negative electrode nylon component.

[0018] Furthermore, the positive electrode rod and the negative electrode rod are respectively covered with a positive electrode cover and a negative electrode cover, and the positive electrode cover and the negative electrode cover are both rectangular bodies without a bottom surface. The positive electrode cover is welded to the outer surface of the left blind plate, and the negative electrode cover is welded to the outer side wall of the lower main pipe; the positive electrode cover and the negative electrode cover are both provided with threading holes for the positive electrode rod and the negative electrode rod to be threaded and connected to electricity.

[0019] Furthermore, a cleaning drum is arranged in the lower main pipe, a reduction motor is arranged on the right side of the right blind plate, and the reduction motor is connected to the cleaning drum through a transmission shaft;

[0020] The left end of the transmission shaft is fixed to the inner side surface of the left blind plate through a shaft sealing assembly, and the right end passes through the right blind plate and is connected to the reduction motor.

[0021] Furthermore, the cleaning drum includes a plurality of connection brackets welded and fixed to the transmission shaft and a row of brushes fixedly connected to the connection brackets, and the row of brushes is fixedly connected to the connection brackets through a fixing member;

[0022] A connecting flange is provided on the outer surface of the right blind plate, and an aluminum seal is provided between the inner wall of the connecting flange and the outer wall of the right end of the transmission shaft; the left end of the connecting flange is welded to the outer surface of the right blind plate, and the right end is connected to a small blind plate through a fixing member, a transmission shaft through hole is opened in the middle of the small blind plate, and the right end of the transmission shaft passes through the transmission shaft through hole and is connected to the reduction motor.

[0023] Furthermore, the upper main pipe is also tubular, and an upper main pipe connecting flange is provided on its lower side wall corresponding to the lower main pipe connecting flange, and the lower main pipe connecting flange and the upper main pipe connecting flange are fixedly connected by bolts, thereby connecting the upper main pipe and the lower main pipe;

[0024] A filter cartridge assembly is arranged in the upper main pipe, and the filter cartridge assembly comprises a filter cartridge support welded on the inner wall of the upper main pipe, a sealing cover plate fixed to the right side of the upper main pipe, and a filter cartridge fixed between the filter cartridge support and the sealing cover plate;

[0025] The filter cartridge support comprises a support vertical end whose upper end is welded to the inner wall of the upper main pipe, and a support horizontal end whose left end is integrally formed with the support vertical end, wherein the support horizontal end is higher than the bottom end of the support vertical end, and the height difference between the two is equal to the wall thickness of the filter cartridge; there are two filter cartridge supports, which are symmetrically welded to the upper and lower inner walls of the upper main pipe; the left end of the filter cartridge is clamped between the support horizontal ends of the two filter cartridge supports;

[0026] The inner diameter of the right pipe opening of the upper main pipe is equal to the outer diameter of the filter cartridge, and the right end of the filter cartridge is clamped at the right pipe opening of the upper main pipe; the sealing cover plate seals the right pipe opening of the upper main pipe through a fixing member.

[0027] Furthermore, a sewage outlet is arranged on the left side wall of the upper main pipe, a pressure gauge and an exhaust valve are arranged on the upper side wall, and a sensor measuring port is also arranged on the rear side wall.

[0028] Furthermore, an electric drain pipe and a manual drain pipe are provided on the lower side wall of the lower main pipe, and an electric drain valve and a manual drain valve are provided at the ends of the electric drain pipe and the manual drain pipe, respectively; the control box is electrically connected to the reduction motor, the electric drain valve, and the positive electrode assembly and the negative electrode assembly.

[0029] The circulating water treatment device of the utility model adopts a purely physical method, fully meets environmental protection requirements, and adopts a bypass method, that is, a part of the circulating water is drawn out for treatment and then sent back to the original system after treatment. This method is not only easy to install, occupies little space, but also saves electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a rear view of the circulating water treatment device of the utility model.

[0031] Figure 2 It is a front view of the circulating water treatment device of the utility model.

[0032] Figure 3 It is a front cross-sectional view of the circulating water treatment device of the utility model.

[0033] Figure 4 It is a front cross-sectional view of the lower main pipe in the circulating water treatment device of the utility model.

[0034] Figure 5 It is a side sectional view of the lower main pipe in the circulating water treatment device of the utility model.

[0035] In the figure:

[0036] 1- rack, 2- water treatment device, 3- control box, 11- L-type fixing, 21- lower main pipe, 22- upper main pipe, 24- water inlet

[0037] Inlet, 25-water outlet, 4-positive electrode assembly, 5-negative electrode assembly;

[0038] 211-left flange, 212-left blind plate, 213-right flange, 214-right blind plate, 215-lower main pipe connecting flange;

[0039] 41-positive electrode rod, 42-positive electrode nylon seal, 51-negative electrode rod, 52-negative electrode nylon seal, 511-limiting boss, 521-outer nylon seal, 522-inner nylon seal;

[0040] 43-positive electrode cover, 53-negative electrode cover, 6-cleaning drum, 7-reduction motor, 8-transmission shaft, 81-shaft sealing assembly;

[0041] 61-connecting bracket, 62-brush, 82-connecting flange, 83-aluminum seal, 84-small blind plate;

[0042] 221-upper main pipe connection flange, 222-drain port, 223-pressure gauge, 224-exhaust valve, 225-sensor measuring port, 216-electric drain pipe, 217-manual drain pipe, 218-electric drain valve, 219-manual drain valve;

[0043] 9-filter cartridge assembly, 91-filter cartridge support, 92-sealing cover plate, 93-filter cartridge, 911-support vertical end, 912-support horizontal end. DETAILED DESCRIPTION

[0044] The following is a clear and complete description of the technical solution of the utility model with specific embodiments in conjunction with the accompanying drawings. It should be understood that the described embodiments are only used to illustrate the utility model, rather than to limit the scope of the utility model.

[0045] Combination Figure 1 and Figure 2 The utility model provides a circulating water treatment device, comprising: a frame 1, a water treatment device 2 arranged on the frame 1, and a control box 3 electrically connected to the water treatment device 2; the water treatment device 2 is fixed on the frame 1 by an L-shaped fixing member 11;

[0046] The water treatment device 2 includes a lower main pipe 21 disposed on the frame 1 and an upper main pipe 22 disposed on the lower main pipe 21;

[0047] The side wall of the lower main pipe 21 is provided with a water inlet 24, which is the total inlet end of the equipment. The side wall of the upper main pipe 22 is provided with a water outlet 25, which is the total outlet end of the equipment. The lower main pipe 21 is also provided with a positive electrode assembly 4 and a negative electrode assembly 5.

[0048] Furthermore, the lower main pipe 21 is tubular, with a left flange 211 and a left blind plate 212 at its left end, and a right flange 213 and a right blind plate 214 at its right end; and a lower main pipe connecting flange 215 is provided at its upper end;

[0049] The lower main pipe connecting flange 215 and the upper side wall of the lower main pipe 21 are integrally formed; the left flange 211 and the left pipe opening of the lower main pipe 21 are integrally formed, and the left blind plate 212 is fixed to the left flange 211 by a fixing member, such as a screw, and the right flange 213 and the right blind plate 214 are arranged in the same manner as the left flange 211 and the left blind plate 212;

[0050] There are two L-shaped fixing members 11 , whose vertical sections are respectively welded to the lower ends of the left flange 211 and the right flange 213 , and whose horizontal sections are fixed to the upper surface of the frame 1 by fixing members, such as screws.

[0051] Further, combined with Figure 3 and Figure 4 The positive electrode assembly 4 includes: a positive electrode rod 41 horizontally inserted into the left blind plate 212 and a positive electrode nylon seal 42 disposed between the left blind plate 212 and the positive electrode rod 41;

[0052] The left blind plate 212 is provided with a positive electrode rod through hole (not shown in the figure), the positive electrode rod 41 is inserted into the positive electrode rod through hole, and the positive electrode nylon seal 42 is provided in the gap between the positive electrode rod 41 and the positive electrode rod through hole, and is used to fasten and seal the gap;

[0053] Combination Figure 1 and Figure 5 The negative electrode assembly 5 includes: a negative electrode rod 51 horizontally inserted into the side wall of the lower main pipe 21 and a negative electrode nylon seal 52 disposed between the lower main pipe 21 and the negative electrode rod 51;

[0054] A negative electrode rod through hole (not shown) is provided on the side wall of the lower main pipe 21, the negative electrode rod 51 is inserted into the negative electrode rod through hole, and the negative electrode nylon seal 52 is provided in the gap between the negative electrode rod 51 and the negative electrode rod through hole to fasten and seal the gap;

[0055] Furthermore, the negative electrode rod 51 is cylindrical, and its side wall protrudes outward to form a limiting boss 511; the negative electrode nylon seal 52 includes: an outer nylon seal 521 fixedly sealing the gap between the outer wall of the lower main pipe 21 and the negative electrode rod 51, and an inner nylon seal 522 fixedly sealing the gap between the inner wall of the lower main pipe 21 and the negative electrode rod 51;

[0056] The outer nylon seal 521 and the inner nylon seal 522 are both L-shaped, the horizontal section of the outer nylon seal 521 is inserted into the gap between the outer wall of the lower main pipe 21 and the negative electrode rod 51, and the vertical section abuts against the outer wall of the lower main pipe 21;

[0057] The horizontal section of the inner nylon sealing sleeve 522 is inserted into the gap between the inner wall of the lower main pipe 21 and the negative electrode rod 51, and the vertical section abuts between the inner wall of the lower main pipe 21 and the limiting boss 511;

[0058] Combination Figure 4 and Figure 5 The structure and arrangement of the positive electrode rod 41 are the same as those of the negative electrode rod 51 , and the structure and arrangement of the positive electrode nylon kit 42 and the negative electrode nylon kit 52 are the same, which will not be described in detail.

[0059] Furthermore, the positive electrode rod 41 and the negative electrode rod 51 are respectively covered with a positive electrode cover 43 and a negative electrode cover 53, and the positive electrode cover 43 and the negative electrode cover 53 are both rectangular bodies without bottom surfaces. The positive electrode cover 4 is welded to the outer surface of the left blind plate 212, and the negative electrode cover 53 is welded to the outer wall of the lower main pipe 21; the positive electrode cover 43 and the negative electrode cover 53 are both provided with threading holes (not shown in the figure) for the positive electrode rod 41 and the negative electrode rod 51 to thread wires and connect electricity.

[0060] Further, combined with Figure 2 and Figure 3 A cleaning drum 6 is disposed in the lower main pipe 21, a reduction motor 7 is disposed on the right side of the right blind plate 214, and the reduction motor 7 is connected to the cleaning drum 6 through a transmission shaft 8;

[0061] The left end of the transmission shaft 8 is fixed to the inner side of the left blind plate 212 through a shaft sealing assembly 81 , and the right end passes through the right blind plate 214 and is connected to the reduction motor 7 .

[0062] Further, the cleaning drum 6 includes a plurality of connection brackets 61 welded and fixed to the transmission shaft 8 and a row of brushes 62 fixedly connected to the connection brackets 61, and the row of brushes 62 is fixedly connected to the connection brackets 61 by fixing members, such as screws;

[0063] The outer surface of the right blind plate 214 is provided with a connecting flange 82, and an aluminum seal 83 is provided between the inner wall of the connecting flange 82 and the outer wall of the right end of the transmission shaft 8. The aluminum seal 83 is used to seal the gap between the outer wall of the right end of the transmission shaft 8 and the inner wall of the connecting flange 82. Its structure and setting method are known in the prior art and will not be described in detail.

[0064] The left end of the connecting flange 82 is welded to the outer surface of the right blind plate 214, and the right end is connected to a small blind plate 84 through a fixing member. A transmission shaft through hole (not shown in the figure) is opened in the middle of the small blind plate 84, and the right end of the transmission shaft 8 passes through the transmission shaft through hole and is connected to the reduction motor 7.

[0065] Furthermore, the upper main pipe 22 is also tubular, and an upper main pipe connecting flange 221 is provided on its lower side wall corresponding to the lower main pipe connecting flange 215, and the lower main pipe connecting flange 215 and the upper main pipe connecting flange 221 are fixedly connected by bolts, thereby connecting the upper main pipe 22 and the lower main pipe 21;

[0066] A filter cartridge assembly 9 is disposed in the upper main pipe 22, and the filter cartridge assembly 9 includes a filter cartridge support 91 welded to the inner wall of the upper main pipe 22, a sealing cover plate 92 fixed to the right side of the upper main pipe, and a filter cartridge 93 fixed between the filter cartridge support 91 and the sealing cover plate 92;

[0067] The filter cartridge support 91 includes a support vertical end 911 welded to the inner wall of the upper main pipe 22 at the upper end, and a support horizontal end 912 integrally formed with the support vertical end 911 at the left end. The support horizontal end 912 is higher than the bottom end of the support vertical end 911, and the height difference between the two is equal to the wall thickness of the filter cartridge 93; there are two filter cartridge supports 91, which are symmetrically welded to the upper and lower inner walls of the upper main pipe 22; the left end of the filter cartridge 93 is clamped between the support horizontal ends 912 of the two filter cartridge supports;

[0068] The inner diameter of the right pipe opening of the upper main pipe 22 is equal to the outer diameter of the filter cartridge 93, and the right end of the filter cartridge 93 is clamped at the right pipe opening of the upper main pipe 22; the sealing cover plate 92 seals the right pipe opening of the upper main pipe 22 through a fixing member.

[0069] Further, combined with Figure 1 and Figure 2 The left side wall of the upper main pipe 22 is provided with a sewage outlet 222, the upper side wall is provided with a pressure gauge 223 and an exhaust valve 224, and the rear side wall is also provided with a sensor measurement port 225;

[0070] The sewage outlet 222 is used for sewage inspection and drainage, the pressure gauge 223 and the exhaust valve 224 are used to display the pressure in the water treatment device 2 and to exhaust the air inside the device, and the sensor measurement port 225 is used to connect various sensors.

[0071] Furthermore, an electric sewage pipe 216 and a manual sewage pipe 217 are provided on the lower side wall of the lower main pipe 21 , and an electric sewage valve 218 and a manual sewage valve 219 are provided at the ends of the electric sewage pipe 216 and the manual sewage pipe 217 , respectively.

[0072] Furthermore, the control box 3 is electrically connected to the reduction motor 7, the electric drain valve 218, the positive electrode assembly 4 and the negative electrode assembly 5, so as to control the water treatment device 2 to perform steps such as cleaning, draining or electrochemical descaling.

[0073] The working principle of the utility model is as follows:

[0074] Anti-scaling and descaling: The control box 3 supplies power to the positive electrode rod 41 and the negative electrode rod 51. After power is supplied, water undergoes electrolysis reaction near the negative electrode rod 51 to generate OH. - , and breaks the balance between the alkalinity and hardness of the solution near the negative electrode rod 51, making the HCO3 in the solution - Ions converted to CO3 2- ions, and Ca in water 2+ Mg 2+The scaling ions migrate toward the negative electrode rod 51 under the action of electrostatic attraction, and generate CaCO3 and Mg(OH)2 precipitation respectively. Moreover, under the action of the electric field, the crystal form of CaCO3 originally deposited on the metal surface gradually changes from a hard calcite structure to a loose aragonite structure, which is easier to peel off under the continuous flushing of the system water flow.

[0075] Sterilization and algae removal: Under the action of the electric field, part of the chloride ions in the water are oxidized into hypochlorous acid, which then diffuse to the negatively charged surface of bacteria and penetrate into the bacteria through the cell wall of the bacteria. When hypochlorous acid reaches the inside of the bacteria, it can oxidize and destroy the enzyme system of the bacteria, causing their death.

[0076] In the electrochemical reaction, some short-lived intermediate products, namely ozone, hydroxyl radicals, hydrogen peroxide and oxygen free radicals, are generated on the electrode surface through the electrolysis of water and the oxygen dissolved in the water. These strong oxidizing substances can oxidize many components in the bacteria and algae cells, causing irreversible changes in the bacteria and algae and causing their death.

[0077] Although the present invention has been described in detail above through preferred embodiments, the above embodiments are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A circulating water treatment device, characterized in that: include: A rack, a water processor disposed on the rack, and a control box electrically connected to the water processor; the water processor is fixed to the rack by an L-shaped fixing member; The water treatment device comprises a lower main pipe arranged on a frame and an upper main pipe arranged on the lower main pipe; The side wall of the lower main pipe is provided with a water inlet, which is the total inlet end of the equipment, and the side wall of the upper main pipe is provided with a water outlet, which is the total outlet end of the equipment; the lower main pipe is also provided with a positive electrode assembly and a negative electrode assembly.

2. The circulating water treatment device according to claim 1, characterized in that: The lower main pipe is tubular, with a left flange and a left blind plate at its left end, and a right flange and a right blind plate at its right end; a lower main pipe connecting flange is provided at its upper end; The lower main pipe connecting flange and the upper side wall of the lower main pipe are integrally formed; the left flange and the left pipe opening of the lower main pipe are integrally formed, the left blind plate is fixed to the left flange through a fixing member, and the arrangement of the right flange and the right blind plate is the same as that of the left flange and the left blind plate; There are two L-shaped fixing members, the vertical sections of which are respectively welded to the lower ends of the left flange and the right flange, and the horizontal sections of which are fixed to the upper surface of the frame through fixing members.

3. The circulating water treatment device according to claim 2, characterized in that: The positive electrode assembly comprises: a positive electrode rod horizontally inserted into the left blind plate and a positive electrode nylon seal arranged between the left blind plate and the positive electrode rod; The left blind plate is provided with a positive electrode rod through hole, the positive electrode rod is inserted into the positive electrode rod through hole, and the positive electrode nylon seal is arranged in the gap between the positive electrode rod and the positive electrode rod through hole, and is used to fasten and seal the gap; The negative electrode assembly comprises: a negative electrode rod horizontally inserted into the side wall of the lower main pipe and a negative electrode nylon seal disposed between the lower main pipe and the negative electrode rod; A negative electrode rod through hole is provided on the side wall of the lower main pipe, the negative electrode rod is inserted into the negative electrode rod through hole, and the negative electrode nylon seal is arranged in the gap between the negative electrode rod and the negative electrode rod through hole to fasten and seal the gap.

4. The circulating water treatment device according to claim 3, characterized in that: The negative electrode rod is cylindrical, and its side wall protrudes outward to form a limiting boss; the negative electrode nylon seal comprises: an outer nylon seal fixedly sealing the gap between the outer wall of the lower main pipe and the negative electrode rod, and an inner nylon seal fixedly sealing the gap between the inner wall of the lower main pipe and the negative electrode rod; The outer nylon seal and the inner nylon seal are both L-shaped, the horizontal section of the outer nylon seal is inserted into the gap between the outer wall of the lower main pipe and the negative electrode rod, and the vertical section abuts against the outer side wall of the lower main pipe; The horizontal section of the inner nylon seal is inserted into the gap between the inner wall of the lower main pipe and the negative electrode rod, and the vertical section abuts between the inner wall of the lower main pipe and the limiting boss; The structure and arrangement of the positive electrode rod are the same as those of the negative electrode rod, and the structure and arrangement of the positive electrode nylon seal are the same as those of the negative electrode nylon seal.

5. The circulating water treatment device according to claim 3, characterized in that: The positive electrode rod and the negative electrode rod are respectively covered with a positive electrode cover and a negative electrode cover, and both the positive electrode cover and the negative electrode cover are rectangular bodies without bottom surfaces. The positive electrode cover is welded to the outer surface of the left blind plate, and the negative electrode cover is welded to the outer side wall of the lower main pipe. The positive electrode cover and the negative electrode cover are both provided with threading holes for the positive electrode rod and the negative electrode rod to be threaded and connected to electricity.

6. The circulating water treatment device according to claim 2, characterized in that: A cleaning drum is arranged in the lower main pipe, a reduction motor is arranged on the right side of the right blind plate, and the reduction motor is connected to the cleaning drum through a transmission shaft; The left end of the transmission shaft is fixed to the inner side surface of the left blind plate through a shaft sealing assembly, and the right end passes through the right blind plate and is connected to the reduction motor.

7. The circulating water treatment device according to claim 6, characterized in that: The cleaning drum comprises a plurality of connection brackets welded and fixed to the transmission shaft and a row of brushes fixedly connected to the connection brackets, wherein the row of brushes is fixedly connected to the connection brackets via a fixing member; A connecting flange is provided on the outer surface of the right blind plate, and an aluminum seal is provided between the inner wall of the connecting flange and the outer wall of the right end of the transmission shaft; the left end of the connecting flange is welded to the outer surface of the right blind plate, and the right end is connected to a small blind plate through a fixing member, a transmission shaft through hole is opened in the middle of the small blind plate, and the right end of the transmission shaft passes through the transmission shaft through hole and is connected to the reduction motor.

8. The circulating water treatment device according to claim 1, characterized in that: The upper main pipe is also tubular, and an upper main pipe connecting flange is provided on its lower side wall corresponding to the lower main pipe connecting flange, and the lower main pipe connecting flange and the upper main pipe connecting flange are fixedly connected by bolts, thereby connecting the upper main pipe and the lower main pipe; A filter cartridge assembly is arranged in the upper main pipe, and the filter cartridge assembly comprises a filter cartridge support welded on the inner wall of the upper main pipe, a sealing cover plate fixed to the right side of the upper main pipe, and a filter cartridge fixed between the filter cartridge support and the sealing cover plate; The filter cartridge support comprises a support vertical end whose upper end is welded to the inner wall of the upper main pipe, and a support horizontal end whose left end is integrally formed with the support vertical end, wherein the support horizontal end is higher than the bottom end of the support vertical end, and the height difference between the two is equal to the wall thickness of the filter cartridge; there are two filter cartridge supports, which are symmetrically welded to the upper and lower inner walls of the upper main pipe; the left end of the filter cartridge is clamped between the support horizontal ends of the two filter cartridge supports; The inner diameter of the right pipe opening of the upper main pipe is equal to the outer diameter of the filter cartridge, and the right end of the filter cartridge is clamped at the right pipe opening of the upper main pipe; the sealing cover plate seals the right pipe opening of the upper main pipe through a fixing member.

9. The circulating water treatment device according to claim 6, characterized in that: The left side wall of the upper main pipe is provided with a sewage outlet, the upper side wall is provided with a pressure gauge and an exhaust valve, and the rear side wall is also provided with a sensor measurement port.

10. The circulating water treatment device according to claim 9, characterized in that: The lower side wall of the lower main pipe is provided with an electric drain pipe and a manual drain pipe, and the ends of the electric drain pipe and the manual drain pipe are provided with an electric drain valve and a manual drain valve respectively; the control box is electrically connected to the reduction motor, the electric drain valve, and the positive electrode assembly and the negative electrode assembly.

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