Adjustable spraying device for sewage treatment agent and treatment method

Abstract

The invention belongs to the field of sewage treatment, and particularly relates to an adjustable spraying device for a sewage treatment agent and a treatment method. The invention provides a sewage treatment agent adjustable spraying device capable of adjusting the spraying range and accelerating sewage treatment and a treatment method. The sewage treatment agent adjustable spraying device comprises a front bracket and the like, side supporting frames are detachably installed between the front support and the rear support in a bilateral symmetry mode, a water pump is installed on the front support, a water outlet pipe and a water inlet pipe are installed on the water pump, and spray head moving structures are installed on the front portions of the side supporting frames and connected with the water pump through the water inlet pipe. Through the special structures of the front bracket, the rear bracket and the side supporting frames, the equipment can be suitable for sewage pools with different sizes, and meanwhile, the equipment is also convenient to place; through the spray head moving structure and the spray head swing mechanism, the swing range of the spray head can be expanded, and the process that a sewage treatment agent is blended into sewage is improved.

Description

Technical Field

[0001] The invention belongs to the field of sewage treatment, and in particular relates to an adjustable sewage treatment agent spraying device and a treatment method. Background Art

[0002] Sewage treatment agents are a type of chemical substances used specifically for purposes such as improving water quality, removing pollutants, and promoting sludge sedimentation. They play an important role in the sewage treatment process and can effectively improve treatment efficiency and reduce pollutant emissions; the sewage treatment agent adjustable spraying device is a device used to accurately control the amount of sewage treatment agents. This device can ensure the rational use of agents in the sewage treatment process, improve treatment efficiency, reduce waste, and reduce operating costs.

[0003] The patent with the patent authorization announcement number CN208732651U discloses a sewage treatment device, and particularly relates to a sewage treatment agent spraying device for sewage treatment. Its structure includes a mounting plate, the mounting plate is connected to a first base plate through a support rod above, the center of the first base plate is embedded with a telescopic cylinder, the lower end of the telescopic cylinder extends to the bottom of the first base plate, the upper power input end of the telescopic cylinder is connected to a second base plate, the outer edge of the first base plate is provided with a first rotating seat, the front part of the swing arm mechanism is hinged on the first rotating seat, the rear end of the swing arm mechanism is hinged to the outer edge of the second base plate, and a spraying mechanism is fixed above the swing arm mechanism, and the spraying mechanism is connected to the external sewage treatment agent inlet pipeline through a connecting nozzle arranged above the center of the second base plate. A sewage treatment agent spraying device for sewage treatment of the present invention can make the addition of the treatment agent relative to the sewage water body uniform, which is conducive to the rapid reaction between the entire sewage water body and the additive. The device drives the second swing arm and the first swing arm to shake through the telescopic cylinder, causing the nozzle on the first swing arm to shake, so that the nozzle on the nozzle sprays the treatment agent evenly on the water surface of the sewage water body. Although this method can add the sewage treatment agent to the sewage, the spraying range is limited, which is not conducive to the rapid treatment of sewage.

[0004] Therefore, there is an urgent need to develop an adjustable sewage treatment agent spraying device and a treatment method that can adjust the spraying range and accelerate sewage treatment. Summary of the invention

[0005] In order to overcome the shortcomings of the current sewage treatment agent spraying method, which has a limited spraying range and is not conducive to the rapid treatment of sewage, the technical problem of the present invention is to provide an adjustable sewage treatment agent spraying device and treatment method that can adjust the spraying range and accelerate sewage treatment.

[0006] The technical solution is as follows: A sewage treatment agent adjustable spraying device, comprising a front bracket, a rear bracket, a side support frame, a water pump, a water outlet pipe, a water inlet pipe and a nozzle moving structure, the side support frame is symmetrically and detachably installed between the front bracket and the rear bracket, the water pump is installed on the front bracket, the water outlet pipe and the water inlet pipe are installed on the water pump, the nozzle moving structure is installed on the front of the side support frame, and the nozzle moving structure is connected to the water pump through the water inlet pipe; the front bracket and the rear bracket include a front support plate and a fixed plate, a row of jacks are evenly spaced on the front support plate, the fixed plate is fixedly installed on the middle part of the outer side of the front bracket, and the water pump is fixedly installed on the top of the fixed plate on the front side.

[0007] Furthermore, the side support frame includes a first sliding frame, a second sliding frame, a sliding rod, a hollow rod, a bolt and a position sensor, the first sliding frame is inserted into the second sliding frame, the first sliding frame is slidably connected to the second sliding frame, the sliding rod is symmetrically arranged on the upper part of the first sliding frame, the hollow rod is symmetrically arranged on the upper part of the second sliding frame, the hollow rod is slidably connected to the sliding rod, the outer ends of the first sliding frame and the second sliding frame are placed on the front support plate, the ends of the first sliding frame and the second sliding frame are slidably connected with the bolt, the bolt is inserted into the socket on the front support plate, and the position sensor is provided on the inner side ends of the first sliding frame and the second sliding frame.

[0008] Furthermore, the nozzle moving structure includes a multi-stage cylinder, an air inlet, a guide block and a nozzle body. The multi-stage cylinder is fixedly connected to the top of the second sliding frame, the air inlet is provided at the front end of the multi-stage cylinder, the guide block is slidably connected to the hollow rod on the same side, the telescopic end of the multi-stage cylinder is connected to the guide block, and the bottom end of the guide block is rotatably connected to the nozzle body.

[0009] Furthermore, it also includes a nozzle swing mechanism, which includes a torsion spring, a wheel, a fixed frame, a thick triangular block, a third sliding frame and a thin triangular block. The torsion spring is connected between the guide block and the nozzle body, the wheels are arranged on both sides of the left and right sides of the nozzle body, the fixed frame is vertically slidably installed in the first sliding frame, the third sliding frame is vertically slidably installed in the second sliding frame, the third sliding frame is slidably connected to the fixed frame, the thick triangular blocks are evenly spaced at the bottom of the fixed frame, the thin triangular blocks are symmetrically arranged at the bottom of the third sliding frame, and the left and right two thin triangular blocks are a group, which are located on the left and right sides of the thick triangular block.

[0010] Furthermore, it also includes a spraying range adjustment mechanism, which includes a motor, a sliding block, a first screw rod, a slider, a second screw rod and a transmission belt. The motor is fixedly installed on the rear part of the first sliding frame through a connecting frame, and the sliding block is connected to the other end of the connecting frame. The sliding block is slidably connected to the second sliding frame, and the output shaft of the motor is installed downward. The first screw rod is rotatably installed in the sliding block, and the second screw rod is connected to the output shaft of the motor. The second screw rod is connected to the fixed frame through threads, and the slider is connected to the first screw rod through threads. The slider is slidably connected to the third sliding frame, and the transmission belt is connected between the first screw rod and the second screw rod.

[0011] Furthermore, it also includes a shielding component, which includes a sliding baffle, a hollow baffle, an electric push rod and a limit plate. The sliding baffles are rotatably connected to the bottom of the left and right sides of the first sliding frame, and the hollow baffles are slidably connected to the lower part of the left and right sides of the second sliding frame. The hollow baffle is slidably connected to the sliding baffle, and the electric push rod is vertically installed on the bottom of the rear side of the first sliding frame. The limit plate is connected to the bottom end of the electric push rod, and the limit plate is clamped at the bottom of the sliding baffle.

[0012] Furthermore, it also includes a retracting mechanism, which includes an adapter block, a rotating plate and a fastening bolt. The bottoms of the left and right ends of the front support plate are rotatably connected to the adapter blocks, the ends of the adapter blocks are rotatably connected to the rotating plate, and the fastening bolts are threadedly connected to the rotating plate.

[0013] Furthermore, it also includes a retracting mechanism, which includes an adapter block, a rotating plate and a fastening bolt. The bottoms of the left and right ends of the front support plate are rotatably connected to the adapter blocks, the ends of the adapter blocks are rotatably connected to the rotating plates, and the fastening bolts are threadedly connected to the rotating plates.

[0014] The present invention also provides a treatment method of a sewage treatment agent adjustable spraying device, and the specific steps are as follows: S1: According to the length and width of the sewage pool, the first sliding frame and the second sliding frame are stretched to the required lengths in the front and rear directions, and then the plugs are pulled out from the first sliding frame and the second sliding frame, and the side support frames are separated to the left and right sides to the required distances, and then the whole equipment is placed above the sewage pool, and the water inlet pipe of the water pump is connected to the sewage treatment agent container, and then the water pump is controlled to start working; S2: Connect the air pump to the air inlet and adjust the air pressure to control the speed of the multi-stage cylinder extension and retraction. Then control the air pump to start working. The multi-stage cylinder extends to drive the guide block to move backwards. The guide block drives the nozzle body to move backwards to spray the sewage treatment agent. S3: When the wheel contacts the thick triangular block and the thin triangular block on the right, the wheel on the right tilts downward, the wheel on the left tilts upward, and the nozzle body rotates counterclockwise for spraying; when the wheel contacts the thick triangular block and the thin triangular block on the left, the wheel on the left tilts downward, the wheel on the right tilts upward, causing the nozzle body to rotate clockwise for spraying, thereby expanding the swing range of the nozzle.

[0015] The beneficial effects are as follows: 1. The present invention uses the special structure of the front bracket, the rear bracket and the side support frame to make the equipment suitable for sewage pools of different sizes, and also facilitates the placement of the equipment; 2. The present invention can expand the swing range of the nozzle through the nozzle moving structure and the nozzle swing mechanism, thereby improving the process of sewage treatment agent blending into sewage; 3. The present invention can adjust the spraying range of the nozzle body through the spraying range adjustment mechanism, so that the equipment can better spray the sewage treatment agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the front bracket, rear bracket, side support frame and retracting mechanism of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure after the side support frame of the present invention is pulled open.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the nozzle moving structure of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing frame and the upper components of the third sliding frame of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the torsion spring and the wheel of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure after the fixed frame and the third sliding frame of the present invention are pulled apart.

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the spray range adjustment mechanism of the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the shielding component of the present invention.

[0025] Figure numbers: 1_front bracket, 101_front support plate, 102_jack, 103_fixed plate, 2_rear bracket, 3_side support frame, 301_first sliding frame, 302_second sliding frame, 303_sliding plug rod, 304_hollow rod, 305_plug, 306_position sensor, 4_water pump, 5_water outlet pipe, 6_water inlet pipe, 7_sprinkler moving structure, 701_multi-stage cylinder, 702_air inlet, 703_guide block, 704_sprinkler body, 8_sprinkler swing mechanism, 801_torsion spring, 802_ Wheel, 803_fixed frame, 804_thick triangular block, 805_third sliding frame, 806_thin triangular block, 9_spraying range adjustment mechanism, 901_motor, 902_sliding block, 903_first screw rod, 904_sliding block, 905_second screw rod, 906_transmission belt, 10_shielding assembly, 1001_sliding baffle, 1002_hollow baffle, 1003_electric push rod, 1004_limiting plate, 11_retraction mechanism, 1101_adapter block, 1102_rotating plate, 1103_fastening bolt. DETAILED DESCRIPTION

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0027] Embodiment: A sewage treatment agent adjustable spraying device and treatment method, such as Figure 1-Figure 4 As shown, it includes a front bracket 1, a rear bracket 2, a side support frame 3, a water pump 4, a water outlet pipe 5, a water inlet pipe 6 and a nozzle moving structure 7. The side support frame 3 is symmetrically and detachably installed between the front bracket 1 and the rear bracket 2. The front bracket 1 is installed with a water pump 4. The water outlet pipe 5 and the water inlet pipe 6 are installed on the water pump 4. The nozzle moving structure 7 is installed on the front of the side support frame 3, and the nozzle moving structure 7 is connected to the water pump 4 through the water inlet pipe 6.

[0028] like Figure 2 As shown, the front bracket 1 and the rear bracket 2 include a front support plate 101 and a fixed plate 103. A row of jacks 102 are evenly spaced apart on the front support plate 101. The fixed plate 103 is fixedly installed in the middle of the outer side of the front bracket 1, and the water pump 4 is fixedly installed on the top of the fixed plate 103 on the front side.

[0029] like Figure 2 and Figure 3As shown, the side support frame 3 includes a first sliding frame 301, a second sliding frame 302, a sliding rod 303, a hollow rod 304, a plug 305 and a position sensor 306. The first sliding frame 301 is inserted into the second sliding frame 302, and the first sliding frame 301 is slidably connected to the second sliding frame 302. The sliding rod 303 is symmetrically arranged on the upper part of the first sliding frame 301, and the hollow rod 304 is symmetrically arranged on the upper part of the second sliding frame 302. The hollow rod 304 is slidably connected to the sliding rod 303. The outer ends of the first sliding frame 301 and the second sliding frame 302 are placed on the front support plate 101, and the ends of the first sliding frame 301 and the second sliding frame 302 are slidably connected with the plug 305, which is inserted into the socket 102 on the front support plate 101. The inner side ends of the first sliding frame 301 and the second sliding frame 302 are both provided with position sensors 306.

[0030] When the device is used to spray sewage treatment agent, first, according to the length and width of the sewage pool, the first sliding frame 301 and the second sliding frame 302 are stretched to the required length on the front and rear sides, and then the plug 305 is pulled out from the first sliding frame 301 and the second sliding frame 302, and the side support frame 3 is separated to the left and right sides to the required distance, and then the whole equipment is placed above the sewage pool, and the water inlet pipe 6 of the water pump 4 is connected to the sewage treatment agent container, and then the water pump 4 is controlled to start working, and the sewage treatment agent enters the nozzle moving structure 7 through the outlet pipe 5, and the nozzle moving structure 7 adds the sewage treatment agent into the sewage. After the sewage treatment agent is added, the water pump 4 is controlled to stop working, and then the equipment is removed from above the sewage pool and reset.

[0031] like Figure 4 As shown, the nozzle moving structure 7 includes a multi-stage cylinder 701, an air inlet 702, a guide block 703 and a nozzle body 704. The top of the second sliding frame 302 is fixedly connected to the multi-stage cylinder 701, the front end of the multi-stage cylinder 701 is provided with an air inlet 702, and the guide block 703 is slidably connected on the hollow rod 304 on the same side. The telescopic end of the multi-stage cylinder 701 is connected to the guide block 703, and the bottom end of the guide block 703 is rotatably connected to the nozzle body 704.

[0032] When the sewage treatment agent is sprayed, the air pump is connected to the air inlet 702, and the air pressure is adjusted to control the speed of the extension and retraction of the multi-stage cylinder 701. The air pump is then controlled to start working, and the multi-stage cylinder 701 extends to drive the guide block 703 to move backward, and the guide block 703 drives the nozzle body 704 to move backward to spray the sewage treatment agent. When the guide block 703 moves backward to contact the position sensor 306, the multi-stage cylinder 701 shrinks and drives the guide block 703 to move forward. At the same time, it drives the guide block 703 and the nozzle body 704 to move forward and contact the front position sensor 306. At this time, the multi-stage cylinder 701 stops working and the sewage treatment agent is sprayed.

[0033] like Figure 5 , Figure 6 and Figure 7 As shown, it also includes a nozzle swing mechanism 8, which includes a torsion spring 801, a wheel 802, a fixed frame 803, a thick triangular block 804, a third sliding frame 805 and a thin triangular block 806. A torsion spring 801 is connected between the guide block 703 and the nozzle body 704. Wheels 802 are arranged on both sides of the nozzle body 704. The fixed frame 803 is vertically slidably installed in the first sliding frame 301, and the third sliding frame 805 is vertically slidably installed in the second sliding frame 302. The third sliding frame 805 is slidably connected to the fixed frame 803. Thick triangular blocks 804 are evenly spaced at the bottom of the fixed frame 803. Thin triangular blocks 806 are symmetrically arranged at the bottom of the third sliding frame 805. The left and right two thin triangular blocks 806 are a group and are located on the left and right sides of the thick triangular block 804.

[0034] When the guide block 703 moves forward and backward to drive the nozzle body 704 to move forward and backward, the guide block 703 drives the wheel 802 to move forward or backward. When the wheel 802 contacts the thick triangular block 804 and the thin triangular block 806 on the right side, the wheel 802 on the right side tilts downward, and the wheel 802 on the left side tilts upward, so that the nozzle body 704 rotates counterclockwise to spray, and the torsion spring 801 is deformed. When the wheel 802 is separated from the thick triangular block 804 and the thin triangular block 806 on the right side, the torsion spring 801 is reset, driving the nozzle body 704 Rotate clockwise to reset. When the wheel 802 contacts the thick triangular block 804 and the thin triangular block 806 on the left, the wheel 802 on the left tilts downward and the wheel 802 on the right tilts upward, causing the nozzle body 704 to rotate clockwise for spraying. The torsion spring 801 is deformed. When the wheel 802 is separated from the thick triangular block 804 and the thin triangular block 806 on the left, the torsion spring 801 is reset, driving the nozzle body 704 to rotate counterclockwise to reset. This is repeated to expand the swing range of the nozzle and improve the process of sewage treatment agent being integrated into sewage.

[0035] like Figure 8As shown, a spraying range adjustment mechanism 9 is also included, and the spraying range adjustment mechanism 9 includes a motor 901, a sliding block 902, a first screw rod 903, a slider 904, a second screw rod 905 and a transmission belt 906. The motor 901 is fixedly installed at the rear part of the first sliding frame 301 through a connecting frame, and the other end of the connecting frame is connected to the sliding block 902, and the sliding block 902 is slidably connected to the second sliding frame 302. The output shaft of the motor 901 is installed downward, and the first screw rod 903 is rotatably installed in the sliding block 902. The second screw rod 905 is connected to the output shaft of the motor 901, and the second screw rod 905 is connected to the fixed frame 803 through a threaded connection. The slider 904 is connected to the first screw rod 903 through a threaded connection, and the slider 904 is slidably connected to the third sliding frame 805. A transmission belt 906 is connected between the first screw rod 903 and the second screw rod 905.

[0036] When it is necessary to reduce the swing angle of the nozzle body 704, the motor 901 is controlled to rotate clockwise, driving the first screw rod 903 and the second screw rod 905 to rotate clockwise, thereby driving the fixed frame 803 and the third sliding frame 805 to move upward, so that the thick triangular block 804 and the thin triangular block 806 move upward. After the wheel 802 contacts the thick triangular block 804 and the thin triangular block 806, the swing amplitude becomes smaller, and the spraying range becomes smaller. When the thick triangular block 804 and the thin triangular block 806 move upward to the required position, the control The motor 901 is controlled to stop working. When it is necessary to expand the spraying range of the nozzle body 704, the motor 901 is controlled to rotate counterclockwise, driving the first screw rod 903 and the second screw rod 905 to rotate counterclockwise, thereby driving the thick triangular block 804 and the thin triangular block 806 to move downward. After the wheel 802 contacts the thick triangular block 804 and the thin triangular block 806, the swing amplitude becomes larger, and the spraying range becomes larger. When the thick triangular block 804 and the thin triangular block 806 move downward to the required position, the motor 901 is controlled to stop working.

[0037] like Fig. 9 As shown, a shielding component 10 is also included, and the shielding component 10 includes a sliding baffle 1001, a hollow baffle 1002, an electric push rod 1003 and a limit plate 1004. The first sliding frame 301 is rotatably connected to the sliding baffle 1001 at the bottom on both sides of the left and right sides, and the second sliding frame 302 is slidably connected to the hollow baffle 1002 at the lower part on both sides. The hollow baffle 1002 is slidably connected to the sliding baffle 1001, and the electric push rod 1003 is vertically installed at the bottom of the rear side of the first sliding frame 301. The bottom end of the electric push rod 1003 is connected to the limit plate 1004, and the limit plate 1004 is stuck at the bottom of the sliding baffle 1001.

[0038] In order to spray the sewage treatment agent to other positions where spraying is not required, the electric push rod 1003 can be controlled to extend or shorten. The extension of the electric push rod 1003 drives the limit plate 1004 to move downward, and the sliding baffle 1001 and the hollow baffle 1002 rotate downward to block the sprayed sewage treatment agent. When the sliding baffle 1001 and the hollow baffle 1002 rotate to the required position, the electric push rod 1003 is controlled to stop working.

[0039] like Figure 2 and Figure 3 As shown, it also includes a retracting mechanism 11, which includes an adapter block 1101, a rotating plate 1102 and a fastening bolt 1103. The bottoms of the left and right ends of the front support plate 101 are rotatably connected to the adapter blocks 1101, and the ends of the adapter blocks 1101 are rotatably connected to the rotating plate 1102. The fastening bolts 1103 are threadedly connected to the rotating plate 1102.

[0040] When the device is not in use, loosen the fastening bolts 1103 and rotate the rotating plate 1102 90 degrees toward the side support frame 3 to shorten the length of the device and facilitate the placement of the device.

[0041] This embodiment provides a treatment method of a sewage treatment agent adjustable spraying device, and the specific steps are as follows: S1: According to the length and width of the sewage pool, the first sliding frame 301 and the second sliding frame 302 are stretched to the required lengths in the front and rear directions, and then the plugs 305 are pulled out from the first sliding frame 301 and the second sliding frame 302, and the side support frames 3 are separated to the left and right sides to the required distances, and then the whole device is placed above the sewage pool, and the water inlet pipe 6 of the water pump 4 is connected to the sewage treatment agent container, and then the water pump 4 is controlled to start working; S2: Connect the air pump to the air inlet 702 and adjust the air pressure to control the speed of the multi-stage cylinder 701 to extend and retract. Then, control the air pump to start working. The multi-stage cylinder 701 extends to drive the guide block 703 to move backward. The guide block 703 drives the nozzle body 704 to move backward to spray the sewage treatment agent. S3: When the wheel 802 contacts the thick triangular block 804 and the thin triangular block 806 on the right, the wheel 802 on the right tilts downward, the wheel 802 on the left tilts upward, and the nozzle body 704 rotates counterclockwise for spraying; when the wheel 802 contacts the thick triangular block 804 and the thin triangular block 806 on the left, the wheel 802 on the left tilts downward, the wheel 802 on the right tilts upward, so that the nozzle body 704 rotates clockwise for spraying, thereby expanding the swing range of the nozzle.

[0042] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sewage treatment agent adjustable spraying device, comprising a front bracket (1), a rear bracket (2), a side support frame (3), a water pump (4), a water outlet pipe (5), a water inlet pipe (6) and a nozzle moving structure (7), wherein the side support frame (3) is detachably mounted between the front bracket (1) and the rear bracket (2) in a bilaterally symmetrical manner, the water pump (4) is mounted on the front bracket (1), the water outlet pipe (5) and the water inlet pipe (6) are mounted on the water pump (4), the nozzle moving structure (7) is mounted on the front of the side support frame (3), and the nozzle moving structure (7) is connected to the water pump (4) via the water inlet pipe (6); wherein the side support frame (3) is characterized in that: The front bracket (1) and the rear bracket (2) comprise a front support plate (101) and a fixing plate (103); the front support plate (101) is provided with a row of insertion holes (102) at even intervals; the fixing plate (103) is fixedly mounted on the middle portion of the outer side of the front bracket (1); and the water pump (4) is fixedly mounted on the top of the fixing plate (103) on the front side.

2. The adjustable sewage treatment agent spraying device according to claim 1, characterized in that: The side support frame (3) comprises a first sliding frame (301), a second sliding frame (302), a sliding rod (303), a hollow rod (304), a plug (305) and a position sensor (306); the first sliding frame (301) is inserted into the second sliding frame (302); the sliding rod (303) is symmetrically arranged on the upper part of the first sliding frame (301); the hollow rod (304) is symmetrically arranged on the upper part of the second sliding frame (302); the outer ends of the first sliding frame (301) and the second sliding frame (302) are placed on the front support plate (101); the plug (305) is slidably connected to the ends of the first sliding frame (301) and the second sliding frame (302); the plug (305) is inserted into the insertion hole (102) on the front support plate (101); and the position sensor (306) is arranged on the inner side ends of the first sliding frame (301) and the second sliding frame (302).

3. The adjustable sewage treatment agent spraying device according to claim 2, characterized in that: The nozzle moving structure (7) comprises a multi-stage cylinder (701), an air inlet (702), a guide block (703) and a nozzle body (704); the top of the second sliding frame (302) is fixedly connected to the multi-stage cylinder (701); the front end of the multi-stage cylinder (701) is provided with the air inlet (702); the guide block (703) is slidably connected to the hollow rod (304) on the same side; the telescopic end of the multi-stage cylinder (701) is connected to the guide block (703); and the bottom end of the guide block (703) is rotatably connected to the nozzle body (704).

4. The adjustable sewage treatment agent spraying device according to claim 3, characterized in that: The nozzle swing mechanism (8) also includes a nozzle swing mechanism (8), which includes a torsion spring (801), a wheel (802), a fixing frame (803), a thick triangular block (804), a third sliding frame (805) and a thin triangular block (806); the torsion spring (801) is connected between the guide block (703) and the nozzle body (704); the wheels (802) are arranged on both sides of the nozzle body (704); the first sliding frame (301) is vertically slidably mounted with the thick triangular block (804); and the third sliding frame (805) is vertically slidably mounted with the thick triangular block (804). A fixed frame (803), the third sliding frame (805) is vertically slidably installed in the second sliding frame (302), the third sliding frame (805) is slidably connected to the fixed frame (803), the thick triangular blocks (804) are evenly spaced at the bottom of the fixed frame (803), the thin triangular blocks (806) are symmetrically arranged at the bottom of the third sliding frame (805), and the two left and right thin triangular blocks (806) form a group and are located on the left and right sides of the thick triangular block (804).

5. The adjustable sewage treatment agent spraying device according to claim 4, characterized in that: The spraying range adjustment mechanism (9) also includes a spraying range adjustment mechanism (9), which includes a motor (901), a sliding block (902), a first screw rod (903), a slider (904), a second screw rod (905) and a transmission belt (906). The motor (901) is fixedly mounted on the rear part of the first sliding frame (301) via a connecting frame, and the sliding block (902) is connected to the other end of the connecting frame. The sliding block (902) is slidably connected to the second sliding frame (302). The output shaft of the motor (901) is arranged downward. The first screw rod (903) is rotatably installed in the sliding block (902), the second screw rod (905) is connected to the output shaft of the motor (901), the second screw rod (905) is connected to the fixed frame (803) by a thread, the first screw rod (903) is connected to the slider (904) by a thread, the slider (904) is slidably connected to the third sliding frame (805), and the transmission belt (906) is connected between the first screw rod (903) and the second screw rod (905).

6. The adjustable sewage treatment agent spraying device according to claim 5, characterized in that: The invention also comprises a shielding component (10), wherein the shielding component (10) comprises a sliding baffle (1001), a hollow baffle (1002), an electric push rod (1003) and a limit plate (1004); the sliding baffle (1001) is rotatably connected to the bottom of the left and right sides of the first sliding frame (301); the hollow baffle (1002) is slidably connected to the lower part of the left and right sides of the second sliding frame (302); the hollow baffle (1002) is slidably connected to the sliding baffle (1001); the electric push rod (1003) is vertically installed at the bottom of the rear side of the first sliding frame (301); the limit plate (1004) is connected to the bottom end of the electric push rod (1003); and the limit plate (1004) is clamped at the bottom of the sliding baffle (1001).

7. The adjustable sewage treatment agent spraying device according to claim 6, characterized in that: The invention also comprises a retracting mechanism (11), the retracting mechanism (11) comprising an adapter block (1101), a rotating plate (1102) and a fastening bolt (1103), the bottoms of both left and right ends of the front support plate (101) are rotatably connected to the adapter blocks (1101), the ends of the adapter blocks (1101) are rotatably connected to the rotating plate (1102), and the fastening bolt (1103) is threadedly connected to the rotating plate (1102).

8. The treatment method of the sewage treatment agent adjustable spraying device according to claim 4 is characterized in that: The following steps are involved: S1: According to the length and width of the sewage pool, the first sliding frame (301) and the second sliding frame (302) are stretched to the required lengths in the front and rear directions, and then the plugs (305) are pulled out from the first sliding frame (301) and the second sliding frame (302), and the side support frames (3) are separated to the left and right sides to the required distances, and then the entire device is placed above the sewage pool, and the water inlet pipe (6) of the water pump (4) is connected to the sewage treatment agent container, and then the water pump (4) is controlled to start working; S2: Connecting the air pump to the air inlet (702) and adjusting the air pressure to control the speed of the extension and retraction of the multi-stage air cylinder (701), and then controlling the air pump to start working, the multi-stage air cylinder (701) extends to drive the guide block (703) to move backward, and the guide block (703) drives the nozzle body (704) to move backward to spray the sewage treatment agent; S3: When the wheel (802) contacts the thick triangular block (804) and the thin triangular block (806) on the right side, the wheel (802) on the right side tilts downward, the wheel (802) on the left side tilts upward, and the nozzle body (704) rotates counterclockwise to spray; when the wheel (802) contacts the thick triangular block (804) and the thin triangular block (806) on the left side, the wheel (802) on the left side tilts downward, and the wheel (802) on the right side tilts upward, so that the nozzle body (704) rotates clockwise to spray, thereby expanding the swing range of the nozzle.

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