Filter membrane cleaning device

Abstract

The utility model discloses a filter membrane cleaning device belongs to sewage treatment technical field, its structure includes frame, cleaning device, water supply mechanism, lifting mechanism and advance and retreat mechanism, when the surface of hollow fiber membrane is attached sludge, cannot normally operate, can place hollow fiber membrane together with membrane frame on the ground, aim at the gap of two hollow fiber membrane components of adjacent of the spray head of filter membrane cleaning device of the utility model, put into the clean water pool, start self -priming water pump, start lifting motor and advance and retreat motor again, make it drive the spray head along the gap of membrane component and repeatedly push forward and pull back and move up and down to hollow fiber membrane water spraying, compared with the artificial cleaning membrane surface pollutant, the labor intensity of the utility model is greatly reduced.

Description

Technical Field

[0001] This utility model relates to a cleaning device for filter membranes, belonging to the field of wastewater treatment technology, and in particular to a cleaning device for cleaning hollow fiber filter membranes used in wastewater treatment systems. Background Technology

[0002] Membrane bioreactor (MBR) technology is a novel water treatment technology that combines activated sludge process with membrane separation process. It involves immersing a membrane module composed of hollow fiber membrane filaments in the wastewater tank of the membrane bioreactor. Figure 6 , Figure 7 , Figure 8 As shown: Water collection pipes are installed at both ends of the hollow fiber membrane. The hollow fiber membrane and the water collection pipes form a membrane module. The membrane module is set vertically side by side in the membrane frame. The water collection pipe is connected to the main effluent pipe. The aeration pipe is set in the lower part of the membrane module inside the membrane frame. In operation, the membrane frame is set in the sewage tank. The main effluent pipe is connected to the inlet of the suction pump through the permeate pipe. The outlet of the suction pump is connected to the clear water tank through the pipe. The aeration pipe is connected to the blower through the pipe. The water containing sludge comes into contact with the surface of the hollow fiber membrane fibers. Through the negative pressure of the suction pump, the water passes through the micropores on the membrane wall and enters the inner side of the hollow tube diameter of the hollow fiber membrane. The sludge is trapped on the outer surface of the membrane fibers. The permeate flows into the clear water tank through the permeate pipe, and the sludge remains in the sewage tank.

[0003] The drawback of existing technologies is that cleaning the membrane surface is labor-intensive.

[0004] Hollow fiber membranes operate in wastewater containing sludge. After a period of use, a large amount of pollutants such as sludge, colloidal substances, and fibrous substances will adhere to and accumulate on the surface of some hollow fiber membrane fibers, causing a decrease in flux and preventing normal operation. In current operating practices, there are no good tools for cleaning the membranes, and operators need to clean them manually, which is very labor-intensive. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a filter membrane cleaning device that uses electric equipment to replace manual labor, thereby reducing the labor intensity of cleaning contaminants on the membrane surface.

[0006] This invention relates to a filter membrane cleaning device, the structure of which includes: a frame, a cleaner, a water supply mechanism, a lifting mechanism, and a forward / backward mechanism; the frame includes an upper horizontal tube, a middle horizontal tube, a lower horizontal tube, a vertical tube, a support plate, and casters; there are four vertical tubes, arranged vertically, with a caster fixedly installed at the lower end of each vertical tube; there are four lower horizontal tubes, arranged horizontally above the casters, with both ends of the lower horizontal tubes fixedly connected to the lower part of the vertical tubes; there are four middle horizontal tubes, arranged horizontally above the lower horizontal tubes, with both ends of the middle horizontal tubes fixedly connected to the middle part of the vertical tubes; there are four upper horizontal tubes, arranged horizontally above the middle horizontal tubes, with both ends of the upper horizontal tubes fixedly connected to the top of the vertical tubes; the support plate is arranged on the lower horizontal tube and fixedly connected to the lower horizontal tube on all four sides; the cleaner includes a water spray pipe, a nozzle, a spray bar, and a spray bar slider, the spray bar being a single-bar type. Spray booms and multi-bar spray booms are included. A single-bar spray boom includes a water-spraying support rod and a nozzle. The nozzle is located at the front end of the water-spraying support rod, which is horizontally positioned. Multi-bar spray booms include horizontal and vertical types. A horizontal multi-bar spray boom includes at least two water-spraying support rods, which are horizontally positioned and connected at their rear ends via a main water-spraying rod. The spacing between adjacent water-spraying support rods is 5 mm to 150 mm. A vertical multi-bar spray boom includes at least two water-spraying support rods, which are vertically positioned. The spacing between adjacent water-spraying support rods is 100 mm to 500 mm. The nozzle is located at the front end of the water-spraying support rod. A water inlet is provided on the water-spraying support rod or the main water-spraying rod, and the inlet connects to the upper end of the water-spraying pipe. The water supply mechanism includes a water pump. The system includes an inlet pipe and a water supply pump. The water pump is either a self-priming pump or a submersible pump. The self-priming pump is mounted on a support plate, with its inlet connected to one end of the inlet pipe and its outlet connected to the lower end of the spray pipe, or the submersible pump's outlet connected to the lower end of the spray pipe. The lifting mechanism includes a screw-type lifting mechanism or a chain-type lifting mechanism. The screw-type lifting mechanism includes a lifting motor, a vertical rod, and a screw assembly. The screw assembly includes a bearing support, a nut, and a screw. The screw and vertical rod are vertically aligned. The upper part of the screw passes through the inner hole of the bearing on the upper bearing support, which is connected to the upper part of the vertical rod. The lower part of the screw passes through the inner hole of the bearing on the lower bearing support, which is connected to the lower part of the vertical rod. The nut is mounted on the screw. The rear end of the water spray support rod or main water spray rod is connected, the spray rod slider is connected to the nut through the horizontal branch pipe, the spray rod slider is engaged with the vertical rod, the lifting motor is fixedly installed at the upper or lower part of the vertical rod, and the shaft of the lifting motor is connected to one end of the screw through the coupling; the chain-type lifting mechanism includes a lifting motor, a vertical rod, two sprockets and a chain, the vertical rod is set vertically, the lifting motor is set at the upper or lower part of the vertical rod and fixedly connected to the vertical rod, one sprocket is set on the shaft of the lifting motor, the other sprocket is set at the other end of the vertical rod opposite to the lifting motor through the bracket, the chain is set between the two sprockets, the chain is connected to the rear end of the water spray support rod or main water spray rod, the spray rod slider is connected to the rear end of the water spray support rod or main water spray rod through the horizontal branch pipe, and the spray rod slider is engaged with the vertical rod;The forward / reverse mechanism includes a screw-type forward / reverse mechanism or a hydraulic forward / reverse mechanism. The screw-type forward / reverse mechanism includes a forward / reverse motor, a push rod, a slide rail assembly, and a screw assembly. The screw assembly includes a bearing support, a nut, and a screw. The slide rail assembly includes a slide rail, a slider, and a connecting plate. There are two slide rails, horizontally arranged on the left and right transverse tubes. The slider engages with the slide rail. The sliders on the two slide rails are respectively connected to the left and right sides of the connecting plate. The screw is horizontally arranged, with its front part passing through the inner hole of the bearing on the front bearing support, which is connected to the front transverse tube. The rear part of the screw passes through the rear... The bearing support has an inner hole for the bearing. The rear bearing support is connected to the rear middle horizontal tube. A nut is mounted on the screw rod. The lower part of the nut is fixedly connected to the connecting plate, and the upper part is fixedly connected to the rear part of the push rod. The push rod is horizontally positioned, and its front end is fixedly connected to the vertical rod. The forward and backward motor is fixedly mounted on a bracket fixedly connected to the rear middle horizontal tube. The shaft of the forward and backward motor is connected to the rear end of the screw rod via a coupling. The hydraulic forward and backward mechanism includes a slide rail assembly, a push rod, a telescopic rod, a hydraulic oil tank, a hydraulic oil pump, and a hydraulic cylinder. The slide rail assembly includes a slide rail, a slider, and a connecting plate. There are two slide rails, horizontally positioned on the left and right sides. On the upper horizontal tube, the slider engages with the slide rail. The sliders on the two slide rails are respectively connected to the left and right sides of the connecting plate. The push rod is horizontally set, with its rear fixedly connected to the connecting plate and its front fixedly connected to the vertical rod. The telescopic rod is horizontally set, with its top fixedly connected to the vertical rod. The rear of the telescopic rod is located inside the hydraulic cylinder and connected to the piston. The hydraulic cylinder is fixedly connected to the front and rear middle horizontal tubes. The rear of the hydraulic cylinder is connected to one end of the inlet and outlet oil manifold. The other end of the inlet and outlet oil manifold is connected to one end of the forward push oil pipe and one end of the retraction inlet oil pipe, respectively. A forward push oil valve is installed on the forward push oil pipe, and a retraction oil valve is installed on the retraction inlet oil pipe. A retraction inlet valve is installed. One end of the forward extension pipe is connected to one end of the oil pump's main outlet pipe. One end of the retraction outlet pipe is connected to one end of the oil pump's main outlet pipe, and the other end is located in the hydraulic oil tank. The other end of the oil pump's main outlet pipe is connected to the oil outlet of the hydraulic oil pump. A retraction outlet valve is installed on the retraction outlet pipe. The other end of the retraction inlet pipe is connected to one end of the oil pump's main inlet pipe. One end of the forward extension pipe is located in the hydraulic oil tank, and the other end is connected to one end of the oil pump's main inlet pipe. The other end of the oil pump's main inlet pipe is connected to the oil inlet of the hydraulic oil pump. A forward extension valve is installed on the forward extension pipe.

[0007] Its beneficial effects are:

[0008] After a period of use, some hollow fiber membrane modules will accumulate sludge and other pollutants on the surface of some hollow fiber membrane fibers, causing a decrease in flux and preventing normal operation. The hollow fiber membrane, along with its frame, can be lifted out of the wastewater tank and placed on the ground. The nozzle of this utility model's filter membrane cleaning device is then aligned with the gap between two adjacent hollow fiber membrane modules. The inlet pipe is inserted into a clear water tank, and the self-priming water pump or submersible pump is started. Water is sprayed from the nozzle. The lifting and retracting motors are then activated, causing the nozzle to repeatedly push and pull back and move up and down along the gap between the membrane modules, spraying water onto the hollow fiber membrane. The operator only needs to position the filter membrane cleaning device, start the water pump, lifting motor, and retracting motor, and then observe the degree of cleaning. Once the cleaning standard is met, the water pump, lifting motor, and retracting motor are turned off. This completes the cleaning of the membrane surface pollutants. Compared to manual cleaning of the membrane surface, this utility model significantly reduces labor intensity. Attached Figure Description

[0009] The filter membrane cleaning device of this utility model will be further described in conjunction with the accompanying drawings and embodiments.

[0010] Figure 1 This is a schematic diagram of the filter membrane cleaning device of this utility model. The upgrading mechanism in the figure is a screw-type lifting mechanism and the forward and backward mechanism is a screw-type forward and backward mechanism.

[0011] Figure 2 This is a schematic diagram of the filter membrane cleaning device of this utility model. The upgrading mechanism in the figure is a chain-type lifting mechanism, and the forward and backward mechanism is a hydraulic forward and backward mechanism. The front part of the hydraulic cylinder has been removed from the figure.

[0012] Figure 3 This is a schematic diagram of the screw-type forward and backward mechanism of the filter membrane cleaning device of this utility model, viewed from top to bottom.

[0013] Figure 4 This is a schematic diagram of the horizontal multi-bar spray bar of the filter membrane cleaning device of this utility model.

[0014] Figure 5 This is a schematic diagram showing the operating status of the filter membrane cleaning device of this utility model.

[0015] Figure 6 This is a schematic diagram of a hollow fiber membrane module in the prior art.

[0016] Figure 7 This is a schematic diagram of a hollow fiber membrane module installed within a frame in the prior art.

[0017] Figure 8 This is a schematic diagram of the operation of a hollow fiber membrane module installed inside a frame in a sewage tank in the existing technology.

[0018] In the diagram, 1 is the upper horizontal pipe, 2 is the middle horizontal pipe, 3 is the lower horizontal pipe, 4 is the vertical pipe, 5 is the support plate, 6 is the caster, 7 is the water spray pipe, 8 is the nozzle, 9 is the water spray support rod, 10 is the water inlet pipe, 11 is the self-priming water pump, 12 is the water inlet, 13 is the lifting motor, 14 is the vertical rod, 15 is the bearing support, 16 is the spray bar slider, 17 is the connecting plate, 18 is the nut, 19 is the screw, 20 is the coupling, 21 is the sprocket, 22 is the chain, 23 is the telescopic rod, 24 is the push rod, 25 is the hydraulic oil tank, 26 is the hydraulic oil pump, 27 is the hydraulic cylinder, 28 is the main inlet and outlet oil pipe, 29 is the forward extension oil pipe, and 30 is the retraction... 31 is the forward oil inlet pipe, 32 is the retractable oil inlet valve, 33 is the horizontal branch pipe, 34 is the oil pump outlet main pipe, 35 is the retractable oil outlet pipe, 36 is the clear water tank, 37 is the retractable oil outlet valve, 38 is the support, 39 is the forward oil inlet pipe, 40 is the forward oil inlet valve, 41 is the forward / retractable motor, 42 is the slide rail, 43 is the slider, 44 is the hollow fiber membrane, 45 is the membrane frame, 46 is the sewage tank, 47 is the main spray rod, 48 is the piston, 49 is the water collection pipe, 50 is the water outlet main pipe, 51 is the aeration pipe, 52 is the blower, 53 is the suction water pump, 54 is the product water pipe, and 55 is the oil pump inlet main pipe. Detailed Implementation

[0019] The structure and features of the filter membrane cleaning device of this utility model are described in detail below with reference to the accompanying drawings:

[0020] Filter membrane cleaning device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown: Its structure includes: a frame, a washer, a water supply mechanism, a lifting mechanism, and a forward / backward mechanism; the frame includes an upper horizontal tube, a middle horizontal tube, a lower horizontal tube, a vertical tube, a support plate, and casters. There are four vertical tubes, arranged vertically, with a caster fixedly installed at the lower end of each vertical tube. There are four lower horizontal tubes, arranged horizontally above the casters, with both ends of the lower horizontal tubes fixedly connected to the lower part of the vertical tubes. There are four middle horizontal tubes, arranged horizontally above the lower horizontal tubes, with both ends of the middle horizontal tubes fixedly connected to the middle of the vertical tubes. There are four upper horizontal tubes, arranged horizontally above the middle horizontal tubes, with both ends of the upper horizontal tubes fixedly connected to the top of the vertical tubes. The support plate is placed on the lower horizontal tube and fixedly connected to the lower horizontal tube on all four sides. The washer includes a water spray pipe, a nozzle, a spray bar, and a spray bar slider. The spray bar is divided into a single-bar spray bar and a multi-bar spray bar. A spray boom includes a water-spraying support rod and a nozzle. The nozzle is located at the front end of the water-spraying support rod, which is horizontally positioned. Multi-rod spray booms include horizontal and vertical types. A horizontal multi-rod spray boom includes at least two water-spraying support rods, horizontally positioned, with their rear ends connected via a main water-spraying rod. The spacing between adjacent water-spraying support rods ranges from 5 mm to 150 mm. A vertical multi-rod spray boom includes at least two water-spraying support rods, vertically positioned, with the spacing between adjacent water-spraying support rods ranging from 100 mm to 500 mm. The nozzle is located at the front end of the water-spraying support rod. A water inlet is provided on the water-spraying support rod or the main water-spraying rod, and the inlet connects to the upper end of the water-spraying pipe. The water supply mechanism includes a water pump and an inlet pipe. The water pump is a self-priming pump or... The submersible pump and self-priming pump are mounted on a support plate. The inlet of the self-priming pump is connected to one end of the inlet pipe, and the outlet is connected to the lower end of the spray pipe, or the outlet of the submersible pump is connected to the lower end of the spray pipe. The lifting mechanism includes a screw-type lifting mechanism or a chain-type lifting mechanism. The screw-type lifting mechanism includes a lifting motor, a vertical rod, and a screw assembly. The screw assembly includes a bearing support, a nut, and a screw. The screw and vertical rod are vertically arranged. The upper part of the screw passes through the inner hole of the bearing on the upper bearing support, and the upper bearing support is connected to the upper part of the vertical rod. The lower part of the screw passes through the inner hole of the bearing on the lower bearing support, and the lower bearing support is connected to the lower part of the vertical rod. The nut is mounted on the screw and connected to the rear end of the spray support rod or the main spray rod. The spray rod slider... The spray bar slider is connected to the vertical rod via a horizontal branch pipe and a nut. The lifting motor is fixedly installed at the top or bottom of the vertical rod, and the shaft of the lifting motor is connected to one end of the screw via a coupling. The chain-type lifting mechanism includes a lifting motor, a vertical rod, two sprockets, and a chain. The vertical rod is vertically arranged, and the lifting motor is located at the top or bottom of the vertical rod and fixedly connected to it. One sprocket is located on the shaft of the lifting motor, and the other sprocket is located at the other end of the vertical rod opposite to the lifting motor via a bracket. The chain is located between the two sprockets and is connected to the rear end of the water spray support rod or the main water spray rod. The spray bar slider is connected to the rear end of the water spray support rod or the main water spray rod via a horizontal branch pipe, and the spray bar slider is engaged with the vertical rod. The forward and backward mechanism includes a screw-type forward and backward mechanism or a hydraulic forward and backward mechanism.The screw-type forward / reverse mechanism includes a forward / reverse motor, a push rod, a slide rail assembly, and a screw assembly. The screw assembly includes a bearing support, a nut, and a screw. The slide rail assembly includes a slide rail, a slider, and a connecting plate. There are two slide rails, horizontally mounted on the left and right transverse tubes. The slider engages with the slide rails, and the sliders on the two slide rails are respectively connected to the left and right sides of the connecting plate. The screw is horizontally mounted. The front part of the screw passes through the inner hole of the bearing on the front bearing support, which connects to the front transverse tube. The rear part of the screw passes through the inner hole of the bearing on the rear bearing support, which connects to the rear transverse tube. The seat is connected to the rear middle horizontal tube. A nut is set on the screw rod. The lower part of the nut is fixedly connected to the connecting plate, and the upper part is fixedly connected to the rear part of the push rod. The push rod is horizontally set, and its front end is fixedly connected to the vertical rod. The forward and backward motor is fixedly set on the bracket fixedly connected to the rear middle horizontal tube. The shaft of the forward and backward motor is connected to the rear end of the screw rod through a coupling. The hydraulic forward and backward mechanism includes a slide rail assembly, a push rod, a telescopic rod, a hydraulic oil tank, a hydraulic oil pump, and a hydraulic cylinder. The slide rail assembly includes a slide rail, a slider, and a connecting plate. There are two slide rails, which are horizontally set on the upper horizontal tubes on the left and right sides. The slider and the slide rail engage. The system is as follows: The sliders on the two slide rails are connected to the left and right sides of the connecting plate, respectively. The push rod is horizontally positioned, with its rear fixedly connected to the connecting plate and its front fixedly connected to the vertical rod. The telescopic rod is horizontally positioned, with its top fixedly connected to the vertical rod. The rear of the telescopic rod is housed within the hydraulic cylinder and connected to the piston. The hydraulic cylinder is fixedly connected to the front and rear transverse tubes. The rear of the hydraulic cylinder is connected to one end of the inlet and outlet oil manifolds. The other ends of the inlet and outlet oil manifolds are respectively connected to one end of the forward push-out oil pipe and one end of the retraction inlet oil pipe. A forward push-out valve is installed on the forward push-out oil pipe, and a retraction inlet valve is installed on the retraction inlet oil pipe. The hydraulic valve has the following connections: one end of the forward-pull oil pipe connects to one end of the oil pump's main outlet pipe; one end of the retractable oil pipe connects to one end of the oil pump's main outlet pipe, and the other end is located in the hydraulic oil tank; the other end of the oil pump's main outlet pipe connects to the outlet of the hydraulic oil pump; the retractable oil outlet valve is located on the retractable oil outlet pipe; the other end of the retractable oil inlet pipe connects to one end of the oil pump's main inlet pipe; one end of the forward-pull oil pipe is located in the hydraulic oil tank, and the other end connects to one end of the oil pump's main inlet pipe; the other end of the oil pump's main inlet pipe connects to the inlet of the hydraulic oil pump; the forward-pull oil valve is located on the forward-pull oil pipe.

[0021] The principle and operation process of the filter membrane cleaning device of this utility model are described in detail below with reference to the accompanying drawings:

[0022] After a period of use, hollow fiber membranes submerged in sewage tanks may develop sludge and other contaminants on the surface of some of the membrane fibers, causing a decrease in flux and preventing normal operation. To address this, the hollow fiber membrane, along with its frame, can be lifted out of the sewage tank and placed on the ground. The nozzle of this novel membrane cleaning device can then be aimed at the gap between two adjacent hollow fiber membrane modules. Figure 5As shown: Place the inlet pipe into the clear water tank, start the self-priming water pump, or place the submersible pump into the clear water tank and start the submersible pump. Water will spray from the nozzle. Then start the lifting motor and the forward / backward motor. Simultaneously, the lifting mechanism moves the nozzle up and down along the gaps in the membrane module, and the forward / backward mechanism moves the nozzle back and forth along the gaps in the membrane module, spraying water onto the hollow fiber membrane. The operator only needs to position the membrane cleaning device, start the self-priming water pump or submersible pump, the lifting motor, and the forward / backward motor, and then observe the degree of cleaning. Once the desired cleaning effect is achieved, turn off the water pump, the lifting motor, and the forward / backward motor. Afterward, immerse the membrane module along with the membrane frame in the cleaning agent to complete the subsequent cleaning operation. Compared to manually cleaning contaminants from the membrane module surface, the labor intensity of using this membrane cleaning device is greatly reduced.

[0023] When the forward and backward movement mechanism uses a hydraulic forward and backward movement mechanism, the operating steps are as follows: During the forward pushing operation, open the forward pushing oil valve, open the forward extending oil valve, close the backward extending oil inlet valve, close the backward extending oil outlet valve, and start the hydraulic oil pump. The hydraulic oil in the hydraulic oil tank enters the hydraulic oil pump along the forward pushing oil pipe and the oil pump inlet manifold. Powered by the hydraulic oil pump, the hydraulic oil flows out from the oil pump outlet manifold, then through the forward pushing oil pipe and the inlet and outlet manifolds into the hydraulic cylinder. According to Pascal's principle, this pushes the telescopic rod forward. The backward movement operation steps of the hydraulic mechanism are: close the forward... Push the oil valve forward, close the forward push oil valve, open the retraction inlet oil valve, open the retraction outlet oil valve, and start the hydraulic oil pump. The hydraulic oil in the hydraulic cylinder flows along the inlet and outlet oil manifolds and the retraction inlet oil pipe to the oil pump inlet manifold and then enters the hydraulic oil pump inlet. Powered by the hydraulic oil pump, the hydraulic oil flows out from the oil pump outlet manifold, through the retraction outlet oil pipe, and into the hydraulic oil tank. After all the hydraulic oil in the hydraulic cylinder has flowed into the hydraulic oil tank, the telescopic rod retracts to its original position. Repeating the forward and retraction operations can realize the forward and retraction action of the water spray support rod driving the nozzle.

[0024] The suction pump, self-priming pump and submersible pump mentioned in this specification are existing pumps, and this technical solution does not involve any modification to their technology.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A filter membrane cleaning device, mainly composed of a frame, a cleaner, and a water supply mechanism; characterized in that: Its structure includes a frame, a washer, a water supply mechanism, a lifting mechanism, and a forward / backward mechanism. The frame includes an upper horizontal tube, a middle horizontal tube, a lower horizontal tube, a vertical tube, a support plate, and casters. There are four vertical tubes, each with a caster fixedly installed at its lower end. There are four lower horizontal tubes, horizontally positioned above the casters, with both ends fixedly connected to the lower parts of the vertical tubes. There are four middle horizontal tubes, horizontally positioned above the lower horizontal tubes, with both ends fixedly connected to the middle of the vertical tubes. There are four upper horizontal tubes, horizontally positioned above the middle horizontal tubes, with both ends fixedly connected to the top of the vertical tubes. The support plate is placed on the lower horizontal tube and fixedly connected to it on all four sides. The washer includes a water spray pipe, a nozzle, a spray bar, and a spray bar slider. The spray bar is divided into single-bar spray bar and multi-bar spray bar. Single-bar spray bar... The system includes a water spray support rod and a nozzle. The nozzle is located at the front end of the water spray support rod, which is horizontally positioned. Multi-rod spray booms include horizontal and vertical types. A horizontal multi-rod spray boom includes at least two water spray support rods, horizontally positioned, with their rear ends connected via a main water spray rod. The spacing between adjacent water spray support rods ranges from 5 mm to 150 mm. A vertical multi-rod spray boom also includes at least two water spray support rods, vertically positioned, with the spacing between adjacent water spray support rods ranging from 100 mm to 500 mm. The nozzle is located at the front end of each water spray support rod. A water inlet is provided on either the water spray support rod or the main water spray rod, and the inlet connects to the upper end of a water spray pipe. The water supply mechanism includes a water pump and an inlet pipe. The water pump is either a self-priming pump or a submersible pump. The pump, a self-priming water pump, is mounted on the support plate. The inlet of the self-priming water pump is connected to one end of the inlet pipe, and the outlet is connected to the lower end of the spray pipe, or the outlet of the submersible pump is connected to the lower end of the spray pipe. The lifting mechanism includes a screw-type lifting mechanism or a chain-type lifting mechanism. The screw-type lifting mechanism includes a lifting motor, a vertical rod, and a screw assembly. The screw assembly includes a bearing support, a nut, and a screw. The screw and vertical rod are vertically arranged. The upper part of the screw passes through the inner hole of the bearing on the upper bearing support, which is connected to the upper part of the vertical rod. The lower part of the screw passes through the inner hole of the bearing on the lower bearing support, which is connected to the lower part of the vertical rod. The nut is mounted on the screw and connected to the rear end of the spray support rod or the main spray rod. The spray rod slider passes through… The horizontal branch pipe is connected to the nut, the spray bar slider is engaged with the vertical rod, and the lifting motor is fixedly installed at the upper or lower part of the vertical rod. The shaft of the lifting motor is connected to one end of the screw through a coupling. The chain-type lifting mechanism includes a lifting motor, a vertical rod, two sprockets, and a chain. The vertical rod is vertically arranged, the lifting motor is located at the upper or lower part of the vertical rod and is fixedly connected to the vertical rod, one sprocket is installed on the shaft of the lifting motor, and the other sprocket is installed at the other end of the vertical rod opposite to the lifting motor through a bracket. The chain is located between the two sprockets and is connected to the rear end of the water spray support rod or the main water spray rod. The spray bar slider is connected to the rear end of the water spray support rod or the main water spray rod through the horizontal branch pipe, and the spray bar slider is engaged with the vertical rod. The forward and backward mechanism includes a screw-type forward and backward mechanism or a hydraulic forward and backward mechanism.The screw-type forward / reverse mechanism includes a forward / reverse motor, a push rod, a slide rail assembly, and a screw assembly. The screw assembly includes a bearing support, a nut, and a screw. The slide rail assembly includes a slide rail, a slider, and a connecting plate. There are two slide rails, horizontally mounted on the left and right transverse tubes. The slider engages with the slide rails, and the sliders on the two slide rails are respectively connected to the left and right sides of the connecting plate. The screw is horizontally mounted. The front part of the screw passes through the inner hole of the bearing on the front bearing support, which connects to the front transverse tube. The rear part of the screw passes through the inner hole of the bearing on the rear bearing support, which connects to the rear transverse tube. The seat is connected to the rear middle horizontal tube. A nut is set on the screw rod. The lower part of the nut is fixedly connected to the connecting plate, and the upper part is fixedly connected to the rear part of the push rod. The push rod is horizontally set, and its front end is fixedly connected to the vertical rod. The forward and backward motor is fixedly set on the bracket fixedly connected to the rear middle horizontal tube. The shaft of the forward and backward motor is connected to the rear end of the screw rod through a coupling. The hydraulic forward and backward mechanism includes a slide rail assembly, a push rod, a telescopic rod, a hydraulic oil tank, a hydraulic oil pump, and a hydraulic cylinder. The slide rail assembly includes a slide rail, a slider, and a connecting plate. There are two slide rails, which are horizontally set on the upper horizontal tubes on the left and right sides. The slider and the slide rail engage. The system is as follows: The sliders on the two slide rails are connected to the left and right sides of the connecting plate, respectively. The push rod is horizontally positioned, with its rear fixedly connected to the connecting plate and its front fixedly connected to the vertical rod. The telescopic rod is horizontally positioned, with its top fixedly connected to the vertical rod. The rear of the telescopic rod is housed within the hydraulic cylinder and connected to the piston. The hydraulic cylinder is fixedly connected to the front and rear transverse tubes. The rear of the hydraulic cylinder is connected to one end of the inlet and outlet oil manifolds. The other ends of the inlet and outlet oil manifolds are respectively connected to one end of the forward push-out oil pipe and one end of the retraction inlet oil pipe. A forward push-out valve is installed on the forward push-out oil pipe, and a retraction inlet valve is installed on the retraction inlet oil pipe. The hydraulic valve has the following connections: one end of the forward-pull oil pipe connects to one end of the oil pump's main outlet pipe; one end of the retractable oil pipe connects to one end of the oil pump's main outlet pipe, and the other end is located in the hydraulic oil tank; the other end of the oil pump's main outlet pipe connects to the outlet of the hydraulic oil pump; the retractable oil outlet valve is located on the retractable oil outlet pipe; the other end of the retractable oil inlet pipe connects to one end of the oil pump's main inlet pipe; one end of the forward-pull oil pipe is located in the hydraulic oil tank, and the other end connects to one end of the oil pump's main inlet pipe; the other end of the oil pump's main inlet pipe connects to the inlet of the hydraulic oil pump; the forward-pull oil valve is located on the forward-pull oil pipe.

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