A rotary drum filter for wastewater treatment

Abstract

This invention discloses a rotary drum filter for wastewater treatment, belonging to the technical field of filtration equipment. It includes a housing with multiple support legs evenly installed at the bottom. A water outlet pipe is installed on the outer periphery of the housing. A rotating drum is rotatably mounted on the inner bottom wall of the housing. A drive motor is installed at the bottom of the housing, and the output shaft of the drive motor passes through the housing and connects to the bottom of the rotating drum. A cover assembly is installed on the housing, and a cleaning component is installed on the cover assembly. In use, wastewater enters through the inlet pipe, starting the motor and causing the rotating block to rotate. The wastewater passes through the equipment casing, through the L-shaped filter blocks, and flows into the rotating drum through the connecting pipe. The rotation of the rotating block drives the multiple L-shaped filter blocks to rotate. With the cooperation of the rotating plate, large particles in the wastewater are blocked by the L-shaped filter blocks. The rotation of the rotating block causes the L-shaped filter blocks to rotate.

Description

Technical Field

[0001] This invention relates to the field of filtration equipment technology, and in particular to a rotary drum filtration device for wastewater treatment. Background Technology

[0002] Water treatment methods include physical and chemical treatment. Humans have been using water treatment for a long time. Physical methods involve using filter media with different pore sizes to remove impurities from the water through adsorption or barrier methods. Activated carbon is a significant adsorption method, while barrier methods involve passing water through filter media to prevent larger impurities from passing through, thus obtaining cleaner water. Physical methods also include sedimentation, which allows lighter impurities to float to the surface and heavier impurities to settle. Chemical methods use various chemicals to transform impurities in the water into substances less harmful to humans or to concentrate the impurities. The oldest chemical treatment method is probably the addition of alum to water; after the impurities aggregate and increase in size, they can be removed by filtration.

[0003] When treating wastewater containing particles, filtration is usually performed first. Existing rotary drum filters first use a filter screen to filter the wastewater before it is discharged into the filter. However, the filter screen is prone to clogging and requires frequent cleaning, making it inconvenient to use. Therefore, we disclose a rotary drum filter for wastewater treatment to meet these needs. Summary of the Invention

[0004] The purpose of this application is to provide a rotary drum filter for wastewater treatment, in order to solve the problem mentioned in the background art that existing rotary drum filters first filter the wastewater with a filter screen and then discharge the wastewater into the rotary drum filter. However, the filter screen is easy to clog and needs to be cleaned frequently, which is inconvenient to use.

[0005] To achieve the above objectives, this application provides the following technical solution: a rotary drum filter for wastewater treatment, comprising a housing, a plurality of support legs evenly installed on the bottom of the housing, a water outlet pipe installed on the outer periphery of the housing, a rotating drum rotatably installed on the inner bottom wall of the housing, a drive motor installed on the bottom of the housing, the output shaft of the drive motor passing through the housing and connected to the bottom of the rotating drum, a cover assembly installed on the housing, a cleaning assembly installed on the cover assembly, a water inlet assembly installed on the cover assembly, a storage assembly installed on the water inlet assembly, a blocking assembly installed on the water inlet assembly, a locking assembly installed on the storage assembly, a locking assembly installed on the cover assembly, and a reset assembly installed on the locking assembly;

[0006] The blocking component includes a rotating block installed inside the water inlet component. Multiple L-shaped filter blocks are evenly installed on the outer periphery of the rotating block. Two clamping blocks are symmetrically installed on one side of each of the multiple L-shaped filter blocks. A rotating plate is rotatably installed on the side of each pair of corresponding clamping blocks that are close to each other. An auxiliary component is installed on the rotating block, and a blocking component is installed on the water inlet component.

[0007] Preferably, the cover assembly includes a fixed cover, which is mounted on the top of the housing, and a flip cover is rotatably mounted on one side of the fixed cover.

[0008] Preferably, the cleaning component includes two scrapers, a block is installed at the bottom of the fixed cover, two T-shaped grooves are symmetrically opened at the top of the block, a T-shaped slider is slidably installed in each of the two T-shaped grooves, the two scrapers are respectively installed at the bottom of the two T-shaped sliders, the scrapers are adapted to the rotating cylinder, and a toggle block is installed at the top of each of the two T-shaped sliders.

[0009] Preferably, the water inlet assembly includes a device housing, which is installed on the top of the fixed cover. A water inlet pipe is installed on one side of the device housing, and a connecting pipe is installed on the other side of the device housing. An inlet hole is provided on the bottom inner wall of the connecting pipe, which penetrates the fixed cover. The rotating block is rotatably installed on the inner walls of the two sides of the device housing that are close to each other. A drive motor is installed on one side of the device housing, and the output shaft of the drive motor passes through one side of the device housing and is connected to one side of the rotating block.

[0010] Preferably, the storage component includes a connecting pipe, which is installed on one side of the device housing. A particle hole is opened on one side of the device housing, and the particle hole is connected to the inside of the connecting pipe. An inclined block is installed inside the connecting pipe. A storage box is installed on one side of the connecting pipe, and a sealing door is rotatably installed on one side of the storage box.

[0011] Preferably, the locking component includes a fixing block, which is installed on the top of the storage box. A round rod is installed on one side of the fixing block, and a locking block is rotatably installed at one end of the round rod.

[0012] Preferably, the locking assembly includes a locking rod, an elongated block is installed on the outer periphery of the flip cover, a locking block is installed on the outer periphery of the outer shell, a through hole is provided on one side of the locking block, the locking rod is slidably installed in the through hole, a lock hole adapted to the locking rod is provided on one side of the elongated block, one end of the locking rod passes through the through hole and extends into the lock hole, and an anti-dislodgement cap is installed on the other end of the locking rod.

[0013] Preferably, the reset assembly includes a reset spring, which is sleeved on the locking rod. One end of the reset spring is connected to one side of the locking block, and the other end of the reset spring is connected to one side of the anti-disengagement cap. A pull tab is installed on one side of the anti-disengagement cap.

[0014] Preferably, the auxiliary component includes an inclined block, which is installed on the outer periphery of the rotating block. Two return springs are symmetrically installed on one side of the rotating plate, and the other ends of the two return springs are connected to one side of the L-shaped filter block.

[0015] Preferably, the blocking component includes a blocking plate, which is rotatably mounted on the inner walls of the two sides of the equipment box that are close to each other. Two limiting blocks are symmetrically installed on the bottom inner wall of the equipment box. One side of each of the two limiting blocks is in contact with one side of the blocking plate. A spring is installed on one side of each limiting block, and one end of the spring is connected to the bottom inner wall of the equipment box.

[0016] In summary, the technical effects and advantages of this invention are as follows:

[0017] 1. In this invention, wastewater enters through the inlet pipe, which starts the motor and causes the rotating block to rotate. The wastewater passes through the equipment box, through the L-shaped filter block, and flows into the rotating cylinder through the connecting pipe. The rotation of the rotating block drives multiple L-shaped filter blocks to rotate. With the cooperation of the rotating plate, large particles in the wastewater are blocked by the L-shaped filter blocks. The rotation of the rotating block causes the L-shaped filter blocks to rotate, and the particles move with the L-shaped filter blocks. When the L-shaped filter blocks rotate to the horizontal position, the particles slide towards the rotating plate under the action of gravity. The rotating plate rotates under the push of the particles, causing the particles to slide off the rotating plate and fall onto the inclined block. The particles slide down the inclined block into the connecting pipe and then into the storage box, which facilitates the filtration and collection of particles. It is simpler and more convenient to use and has good practicality.

[0018] 2. In this invention, after the wastewater enters the rotating drum, the drive motor starts and drives the rotating drum to rotate. The rotating drum filters the wastewater. The wastewater enters the outer shell from the rotating drum and then flows out from the outlet pipe. After filtration is completed, the pull tab is pulled, and the locking rod is moved by the anti-detachment cap to release the lock on the long block. Then the flip cover is opened, and the actuating block is pulled, which drives the T-shaped slider to slide upward on the block, so that the sliding plate moves upward and scrapes off the particles filtered around the rotating drum. This makes it easier to clean the inside of the rotating drum, making it simpler and more convenient to use and more practical.

[0019] 3. In this invention, when it is necessary to clean the particles in the storage box, the locking block is rotated so that the locking block does not contact the closed door, thus unlocking the closed door. Then the closed door is rotated to open, making it convenient to clean the particles in the storage box. After cleaning, the closed door is closed, and the locking block is rotated so that the locking block contacts the closed door, thus closing the closed door. It is simpler and more convenient to use and has good practicality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a rotary drum filter device for wastewater treatment in an embodiment of this application;

[0022] Figure 2 This is a three-dimensional structural diagram of a rotary drum filter device for wastewater treatment from another perspective, as shown in an embodiment of this application.

[0023] Figure 3 This is a cross-sectional perspective view of a rotary drum filter for wastewater treatment in an embodiment of this application.

[0024] Figure 4 This is an enlarged three-dimensional cross-sectional view of the connection between the equipment box and the connecting pipe in an embodiment of this application.

[0025] Figure 5 This is an enlarged three-dimensional cross-sectional view of the connection between the L-shaped filter block and the clamping block in the embodiments of this application;

[0026] Figure 6 This is an enlarged three-dimensional cross-sectional view of the connection between the baffle plate and the elastic spring in an embodiment of this application;

[0027] Figure 7 Examples of this application Figure 2 A magnified structural diagram of part A in the middle.

[0028] In the diagram: 1. Outer shell; 2. Support leg; 3. Water outlet pipe; 4. Drive motor; 5. Rotating cylinder; 6. Cover assembly; 60. Fixed cover; 601. Flip-up cover; 7. Water inlet assembly; 70. Equipment tube box; 701. Water inlet pipe; 702. Connecting pipe; 8. Storage assembly; 80. Connecting pipe; 801. Storage box; 802. Sealing door; 9. Locking assembly; 90. Fixing block; 901. Round rod; 902. Locking block; 10. Cleaning assembly; 100. Square block; 1001. T-shaped slider; 1002. Actuating block; 1003 11. Scraper blade; 11. Blocking assembly; 110. Rotating block; 1101. L-shaped filter block; 1102. Clamping block; 1103. Rotating plate; 12. Auxiliary assembly; 120. Inclined block; 1201. Reset spring; 13. Blocking assembly; 130. Blocking plate; 1301. Elastic spring; 1302. Limiting block; 14. Locking assembly; 140. Long block; 1401. Locking block; 1402. Locking rod; 1403. Anti-detachment cap; 15. Reset assembly; 150. Reset tension spring; 1501. Pull plate; 16. Drive motor. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example: Reference Figure 1-7 The wastewater treatment rotary filter device shown includes a housing 1, a plurality of support legs 2 evenly installed on the bottom of the housing 1, an outlet pipe 3 installed on the outer periphery of the housing 1, a rotating cylinder 5 rotatably installed on the bottom inner wall of the housing 1, a drive motor 4 installed on the bottom of the housing 1, the output shaft of the drive motor 4 passing through the housing 1 and connected to the bottom of the rotating cylinder 5, a cover assembly 6 installed on the housing 1, a cleaning assembly 10 installed on the cover assembly 6, a water inlet assembly 7 installed on the cover assembly 6, a storage assembly 8 installed on the water inlet assembly 7, a blocking assembly 11 installed on the water inlet assembly 7, a locking assembly 9 installed on the storage assembly 8, a locking assembly 14 installed on the cover assembly 6, and a reset assembly 15 installed on the locking assembly 14.

[0031] The blocking component 11 includes a rotating block 110, which is installed inside the water inlet component 7. Multiple L-shaped filter blocks 1101 are evenly installed on the outer periphery of the rotating block 110. Two clamping blocks 1102 are symmetrically installed on one side of each of the multiple L-shaped filter blocks 1101. A rotating plate 1103 is rotatably installed on the side of each pair of corresponding clamping blocks 1102 that are close to each other. An auxiliary component 12 is installed on the rotating block 110, and a blocking component 13 is installed on the water inlet component 7.

[0032] With the above structure, when the wastewater flows, the particles are filtered and blocked by the L-shaped filter block 1101, so that the large particles of wastewater flowing into the rotating cylinder 5 are filtered out, making the rotating cylinder 5 more convenient to filter and more practical.

[0033] refer to Figure 1 , 2 As shown in Figures 3 and 7, the cover assembly 6 includes a fixed cover 60, which is installed on the top of the housing 1. A flip cover 601 is rotatably installed on one side of the fixed cover 60. With the fixed cover 60, the housing 1 can be easily opened with the cooperation of the flip cover 601.

[0034] refer to Figure 2 As shown, the cleaning component 10 includes two scrapers 1003. A block 100 is installed at the bottom of the fixed cover 60. Two T-shaped grooves are symmetrically opened on the top of the block 100. T-shaped sliders 1001 are slidably installed in the two T-shaped grooves. The two scrapers 1003 are respectively installed at the bottom of the two T-shaped sliders 1001. The scrapers 1003 are adapted to the rotating cylinder 5. A toggle block 1002 is installed on the top of the two T-shaped sliders 1001. By setting the scrapers 1003, pulling the toggle block 1002 will drive the T-shaped sliders 1001 to slide upward on the block 100, so that the scrapers 1003 move upward and scrape off the particles filtered around the rotating cylinder 5, which is convenient for cleaning the inside of the rotating cylinder 5. It is simpler and more convenient to use and has good practicality.

[0035] refer to Figure 1-5 As shown, the water inlet assembly 7 includes a device box 70, which is installed on the top of the fixed cover 60. A water inlet pipe 701 is installed on one side of the device box 70, and a connecting pipe 702 is installed on the other side of the device box 70. An inlet hole is opened on the bottom inner wall of the connecting pipe 702, which penetrates the fixed cover 60. A rotating block 110 is rotatably installed on the inner walls of the two sides of the device box 70 that are close to each other. A drive motor 16 is installed on one side of the device box 70, and the output shaft of the drive motor 16 passes through one side of the device box 70 and is connected to one side of the rotating block 110. The device box 70 facilitates the entry of wastewater and the installation of the rotating block 110, making it more convenient to use.

[0036] refer to Figure 1-5As shown, the storage component 8 includes a connecting pipe 80, which is installed on one side of the device housing 70. A particle hole is opened on one side of the device housing 70, and the particle hole is connected to the connecting pipe 80. An inclined block is installed inside the connecting pipe 80. A storage box 801 is installed on one side of the connecting pipe 80, and a sealing door 802 is rotatably installed on one side of the storage box 801. With the connection pipe 80 and the cooperation of the storage box 801, it is convenient to store particles and make it more convenient to use.

[0037] refer to Figure 1-5 As shown, the locking component 9 includes a fixing block 90, which is installed on the top of the storage box 801. A round rod 901 is installed on one side of the fixing block 90, and a locking block 902 is rotatably installed on one end of the round rod 901. With the fixing block 90 and the cooperation of the locking block 902, the closing door 802 can be easily locked, making it convenient to use.

[0038] refer to Figure 2 and 7 As shown, the locking assembly 14 includes a locking rod 1402, an elongated block 140 is installed on the outer periphery of the flip cover 601, and a locking block 1401 is installed on the outer periphery of the outer shell 1. A through hole is provided on one side of the locking block 1401, and the locking rod 1402 is slidably installed in the through hole. A lock hole adapted to the locking rod 1402 is provided on one side of the elongated block 140. One end of the locking rod 1402 passes through the through hole and extends into the lock hole. An anti-detachment cap 1403 is installed on the other end of the locking rod 1402. The locking rod 1402 facilitates locking the elongated block 140, thereby locking the flip cover 601.

[0039] refer to Figure 2 and 7 As shown, the reset assembly 15 includes a reset spring 150, which is sleeved on the locking rod 1402. One end of the reset spring 150 is connected to one side of the locking block 1401, and the other end of the reset spring 150 is connected to one side of the anti-disengagement cap 1403. A pull tab 1501 is installed on one side of the anti-disengagement cap 1403. The reset spring 150 facilitates the reset of the locking rod 1402, making it convenient to use.

[0040] refer to Figure 5 and 6 As shown, the auxiliary component 12 includes a wedge block 120, which is installed on the outer periphery of the rotating block 110. Two return springs 1201 are symmetrically installed on one side of the rotating plate 1103. The other end of the two return springs 1201 is connected to one side of the L-shaped filter block 1101. The wedge block 120 facilitates the sliding of particles into the connecting pipe 80, and the return springs 1201 facilitate the reset of the rotating plate 1103.

[0041] refer to Figure 5 and6 As shown, the blocking component 13 includes a blocking plate 130, which is rotatably mounted on the inner walls of the equipment box 70 on both sides. Two limiting blocks 1302 are symmetrically installed on the bottom inner wall of the equipment box 70. One side of each limiting block 1302 is in contact with one side of the blocking plate 130. A spring spring 1301 is installed on one side of the limiting block 1302. One end of the spring spring 1301 is connected to the bottom inner wall of the equipment box 70. The blocking plate 130 facilitates the blocking of particles when the L-shaped filter block 1101 rotates.

[0042] Working principle of this invention:

[0043] In operation, wastewater enters through the inlet pipe 701, starting the motor 16 and causing the rotating block 110 to rotate. The wastewater passes through the equipment pipe box 70, through the L-shaped filter blocks 1101, and flows into the rotating cylinder 5 through the connecting pipe 702. The rotation of the rotating block 110 drives the multiple L-shaped filter blocks 1101 to rotate. With the cooperation of the rotating plate 1103, large particles in the wastewater are blocked by the L-shaped filter blocks 1101. The rotation of the rotating block 110 causes the L-shaped filter blocks 1101 to rotate, thus blocking the particles. As the L-shaped filter block 1101 moves, when the L-shaped filter block 1101 rotates to a horizontal position, the particles slide towards the rotating plate 1103 under the action of gravity. The rotating plate 1103 rotates under the push of the particles, causing the particles to slide off the rotating plate 1103 and fall onto the inclined block 120. The particles slide down the inclined block 20 into the connecting pipe 80, and then slide from the connecting pipe 80 into the storage box 801. This facilitates the filtration and collection of particles, making it simpler and more convenient to use, and improving its practicality.

[0044] After the wastewater enters the rotating drum 5, the drive motor 4 starts, causing the rotating drum 5 to rotate. The rotating drum 5 filters the wastewater, which then enters the outer casing 1 and flows out from the outlet pipe 3. After filtration, the pull tab 1501 is pulled, which moves the locking rod 1402 through the anti-detachment cap 1403, releasing the lock on the long block 140. Then, the flip cover 601 is opened, and the actuating block 1002 is pulled, causing the T-shaped slider 1001 to slide upward on the square block 100, which moves the scraper 1003 upward and scrapes off the particles filtered around the rotating drum 5, making it easier to clean the inside of the rotating drum 5. This makes it simpler and more convenient to use, and it is very practical.

[0045] When it is necessary to clean the particles in the storage box 801, rotate the locking block 902 so that the locking block 902 does not contact the sealing door 802, thereby unlocking the sealing door 802. Then rotate the sealing door 802 to open it, making it easy to clean the particles in the storage box 801. After cleaning, close the sealing door 802 by rotating the locking block 902 so that the locking block 902 contacts the sealing door 802 to close the sealing door 802. It is simpler and more convenient to use and has good practicality.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary drum filter for wastewater treatment, comprising a housing (1), characterized in that: Multiple support legs (2) are evenly installed on the bottom of the outer shell (1). A water outlet pipe (3) is installed on the outer periphery of the outer shell (1). A rotating cylinder (5) is rotatably installed on the inner wall of the bottom of the outer shell (1). A drive motor (4) is installed on the bottom of the outer shell (1). The output shaft of the drive motor (4) passes through the outer shell (1) and is connected to the bottom of the rotating cylinder (5). A cover assembly (6) is installed on the outer shell (1). A cleaning assembly (10) is installed on the cover assembly (6). A water inlet assembly (7) is installed on the cover assembly (6). A storage assembly (8) is installed on the water inlet assembly (7). A blocking assembly (11) is installed on the water inlet assembly (7). A locking assembly (9) is installed on the storage assembly (8). A locking assembly (14) is installed on the cover assembly (6). A reset assembly (15) is installed on the locking assembly (14). The blocking component (11) includes a rotating block (110), which is installed inside the water inlet component (7). Multiple L-shaped filter blocks (1101) are evenly installed on the outer periphery of the rotating block (110). Two clamping blocks (1102) are symmetrically installed on one side of each of the multiple L-shaped filter blocks (1101). A rotating plate (1103) is rotatably installed on the side of each pair of corresponding clamping blocks (1102) that are close to each other. An auxiliary component (12) is installed on the rotating block (110), and a blocking component (13) is installed on the water inlet component (7). The cover assembly (6) includes a fixed cover (60) mounted on the top of the housing (1), and a flip cover (601) is rotatably mounted on one side of the fixed cover (60); The water inlet assembly (7) includes a device box (70), which is installed on the top of the fixed cover (60). A water inlet pipe (701) is installed on one side of the device box (70), and a connecting pipe (702) is installed on the other side of the device box (70). An inlet hole is provided on the bottom inner wall of the connecting pipe (702), which penetrates the fixed cover (60). The rotating block (110) is rotatably installed on the inner walls of the two sides of the device box (70) that are close to each other. A drive motor (16) is installed on one side of the device box (70), and the output shaft of the drive motor (16) passes through one side of the device box (70) and is connected to one side of the rotating block (110). The storage component (8) includes a connecting pipe (80), which is installed on one side of the device box (70). A particle hole is opened on one side of the device box (70), which is connected to the inside of the connecting pipe (80). An inclined block is installed inside the connecting pipe (80). A storage box (801) is installed on one side of the connecting pipe (80), and a sealing door (802) is rotatably installed on one side of the storage box (801). The locking component (9) includes a fixing block (90), which is installed on the top of the storage box (801). A round rod (901) is installed on one side of the fixing block (90), and a locking block (902) is rotatably installed on one end of the round rod (901). The auxiliary component (12) includes an inclined block (120), which is installed on the outer periphery of the rotating block (110). Two return springs (1201) are symmetrically installed on one side of the rotating plate (1103). The other end of the two return springs (1201) is connected to one side of the L-shaped filter block (1101). Particles slide down the inclined block (120) into the connecting pipe (80). The blocking component (13) includes a blocking plate (130), which is rotatably mounted on the inner walls of the equipment box (70) on both sides. Two limiting blocks (1302) are symmetrically installed on the bottom inner wall of the equipment box (70). One side of each of the two limiting blocks (1302) is in contact with one side of the blocking plate (130). A spring spring (1301) is installed on one side of the limiting block (1302), and one end of the spring spring (1301) is connected to the bottom inner wall of the equipment box (70).

2. The rotary drum filter for wastewater treatment according to claim 1, characterized in that: The cleaning component (10) includes two scrapers (1003), a block (100) is installed at the bottom of the fixed cover (60), two T-shaped grooves are symmetrically opened at the top of the block (100), and a T-shaped slider (1001) is slidably installed in each of the two T-shaped grooves. The two scrapers (1003) are respectively installed at the bottom of the two T-shaped sliders (1001). The scrapers (1003) are adapted to the rotating cylinder (5), and a toggle block (1002) is installed at the top of each of the two T-shaped sliders (1001).

3. The rotary drum filter for wastewater treatment according to claim 1, characterized in that: The locking assembly (14) includes a locking rod (1402), an elongated block (140) is installed on the outer periphery of the flip cover (601), a locking block (1401) is installed on the outer periphery of the outer shell (1), a through hole is provided on one side of the locking block (1401), the locking rod (1402) is slidably installed in the through hole, a lock hole adapted to the locking rod (1402) is provided on one side of the elongated block (140), one end of the locking rod (1402) passes through the through hole and extends into the lock hole, and an anti-dislodgement cap (1403) is installed on the other end of the locking rod (1402).

4. The rotary drum filter for wastewater treatment according to claim 3, characterized in that: The reset assembly (15) includes a reset spring (150), which is sleeved on the locking rod (1402). One end of the reset spring (150) is connected to one side of the locking block (1401), and the other end of the reset spring (150) is connected to one side of the anti-detachment cap (1403). A pull tab (1501) is installed on one side of the anti-detachment cap (1403).

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