Laser weeding water cooling machine

Abstract

This invention discloses a laser weeding water-cooled machine, relating to the technical field of laser weeding equipment. The water-cooled machine includes a heat dissipation unit, a cooling unit, and a filtration unit. The heat dissipation unit includes a casing, a back plate, a fan, a heat dissipation fin assembly, and a U-shaped tube passing through the heat dissipation fin assembly. The cooling unit includes a cooling housing, an inlet pipe, an outlet pipe, a compressor, a water tank, and a circulating water pump. The inlet and outlet pipes are connected to the U-shaped tube via flexible hoses. The heat dissipation unit and the cooling unit are separate units connected by flexible hoses. The heat dissipation unit is installed on the side of the laser reactor to directly blow cool air, while the cooling unit is installed on the weeding machine frame. The filtration unit includes an air inlet pipe and a filter assembly. The filter assembly consists of a dust cover, a ring-shaped filter screen, and a connecting plate forming a shell. Internally, it contains airflow-driven fan blades, a cleaning rack, and a brush plate, which can automatically clean the inner wall of the filter screen. This invention features a flexible layout, saves installation space, has a self-cleaning dustproof function, and effectively improves the cooling efficiency and service life of laser weeding equipment.

Description

Technical Field

[0001] This invention relates to the field of laser weeding equipment technology, and in particular to a laser weeding water-cooled machine. Background Technology

[0002] Laser weeding is an emerging green agricultural weeding technology that uses a high-energy laser beam to irradiate weeds, destroying their cell structure and causing them to die. The laser generator produces a large amount of heat during operation, requiring a water-cooling system. Existing laser weeders typically use high-power water-coolers, which are generally integrated designs and quite large. These require a significant amount of space to install within the laser weeder, resulting in a bulky overall device and inflexible layout.

[0003] In addition, laser weed trimmers often operate in dusty environments such as fields and wilderness. The cooling unit of the water-cooled machine is prone to absorbing a large amount of dust, which adheres to the surface of the cooling fins and seriously affects the heat dissipation effect.

[0004] Although traditional water chillers are equipped with filtration devices, the filters are prone to clogging, requiring frequent manual replacement or cleaning, resulting in high maintenance costs. Summary of the Invention

[0005] In view of the above-mentioned problems in the prior art, the present invention is proposed.

[0006] The purpose of this invention is to provide a laser weeding water-cooled machine, which aims to solve the problems of existing laser weeding water-cooled machines being large in size, inflexible in layout, easy to accumulate dust in the heat dissipation unit, and inconvenient to clean the filter screen.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a laser weeding water-cooled machine, comprising a heat dissipation unit, including a machine cover, a back plate mounted on the machine cover, multiple sets of fans embedded in the machine cover, a heat dissipation fin group fixedly connected to one side of the back plate, and a U-shaped tube penetrating the heat dissipation fin group; the machine cover and the back plate form a closed space, and an air inlet port is provided on the back plate;

[0008] The refrigeration unit includes a refrigeration housing, an inlet pipe and an outlet pipe disposed on the top of the refrigeration housing, and a compressor, a water tank and a circulating water pump built into the refrigeration housing; the inlet pipe and the outlet pipe are respectively connected to the two ends of the U-shaped pipe through connecting hoses.

[0009] In a preferred embodiment of the laser weeding water-cooled machine of the present invention, the water inlet pipe, the water tank, the circulating water pump, the compressor and the water outlet pipe are connected in sequence.

[0010] In a preferred embodiment of the laser weeding water-cooled machine of the present invention, the heat dissipation unit is used to be installed on the side of the laser reactor, the cooling unit is used to be installed on the frame of the weeding machine, and the connecting hose is a flexible hose.

[0011] As a preferred embodiment of the laser weeding water-cooled machine of the present invention, it further includes a filtration unit, wherein the filtration unit includes an air inlet pipe connected to the air inlet port and a filtration component disposed at the tail end of the air inlet pipe.

[0012] As a preferred embodiment of the laser weeding water-cooled machine of the present invention, the filter assembly includes a dust cover, an annular filter screen and a connecting plate;

[0013] The dust cover, the annular filter screen, and the connecting plate together form a housing;

[0014] The outer wall of the dust cover is fixedly connected to a first connecting ear, and the outer wall of the connecting plate is fixedly connected to a connecting frame. The connecting plate and the first connecting ear are fixedly connected by screws. The facing surfaces of the connecting plate and the dust cover are provided with grooves, and the annular filter screen is placed in the grooves.

[0015] The outer wall of the connecting plate is fixedly connected to a second connecting ear for connecting to the body of the weeder.

[0016] As a preferred embodiment of the laser weeding water-cooled machine of the present invention, the filter assembly further includes a fixed base installed in the inner cavity of the dust cover, a rotating shaft rotatably connected to the fixed base, a fan blade and a cleaning frame fixedly connected to the rotating shaft, and a brush plate fixedly connected to the tail end of the cleaning frame.

[0017] The fan blades are located on the air inlet side of the dust cover, the rotating shaft extends along the axial direction of the dust cover, and one end of the shaft is inserted into the connecting plate and limited by the connecting plate.

[0018] In a preferred embodiment of the laser weeding water-cooled machine of the present invention, the brush plate is located inside the annular filter screen and in contact with the inner wall of the annular filter screen, and is used to clean along the inner wall of the filter screen when rotating.

[0019] As a preferred embodiment of the laser weeding water-cooled machine of the present invention, the shell is in the shape of a frustum, wherein the connecting plate is the bottom surface of the frustum, the annular filter screen is the cylindrical section of the frustum, and the dust cover is the conical surface of the frustum.

[0020] The conical structure of the dust cover increases the airflow velocity as it flows from the large end to the small end of the frustum, thereby driving the fan blades to rotate.

[0021] In a preferred embodiment of the laser weeding water-cooled machine of the present invention, the dust cover and the connecting plate are detachably fixedly connected by the first connecting ear, the connecting frame and screws, so as to facilitate the replacement of the annular filter screen.

[0022] In a preferred embodiment of the laser weeding water-cooled machine of the present invention, the cleaning frame is a radially outwardly extending spoke-shaped structure, and the brush plate is fixed to the tail end of the cleaning frame and extends along the axial direction of the annular filter screen.

[0023] The beneficial effects of the laser weeding water-cooled machine of this invention are as follows:

[0024] 1. By dividing the water chiller into a heat dissipation unit and a cooling unit, which are connected by a flexible connecting hose, the heat dissipation unit can be compactly installed on the side of the laser reactor and blow cold air directly onto the laser reactor; the cooling unit can be flexibly arranged in the empty space of the weeder frame without reserving too much installation space, which significantly improves the flexibility of equipment layout and space utilization.

[0025] 2. A filter unit is installed at the air intake port to filter the air entering the heat dissipation unit, preventing dust from accumulating on the surface of the heat dissipation fins and ensuring the cooling effect for long-term use.

[0026] 3. The filter assembly uses a dust cover, a ring-shaped filter screen and a connecting plate for detachable connection. The filter screen is placed in the groove, making replacement convenient and quick.

[0027] 4. The fan blades are driven to rotate by the flow of air, which in turn drives the brush plate to automatically clean along the inner wall of the filter screen. No additional power source is required, the structure is simple and reliable, and the filter screen replacement cycle is effectively extended.

[0028] 5. The dust cover, filter screen and connecting plate are constructed together into a frustum-shaped shell. The contraction effect of the frustum-shaped cone surface accelerates the airflow, ensuring that the fan blades can be driven to rotate even at low wind speeds, thus improving the reliability of the self-cleaning system. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the back structure of the present invention.

[0032] Figure 3This is a schematic diagram of the internal structure of the heat dissipation unit in this invention.

[0033] Figure 4 This is a schematic diagram of the internal structure of the refrigeration unit in this invention.

[0034] Figure 5 This is a schematic diagram of the structure of the filter component in this invention.

[0035] Figure 6 This is a cross-sectional view of the filter component in this invention.

[0036] In the diagram: 100, heat dissipation unit; 110, hood; 120, backplate; 130, fan; 140, heat dissipation fin assembly; 150, U-shaped tube; 160, air intake port; 200, cooling unit; 210, cooling cabinet; 220, water inlet pipe; 230, water outlet pipe; 240, connecting hose; 250, compressor; 260, water tank; 270, circulating water pump; 300, filter unit; 310, air inlet pipe; 320, filter assembly; 321, dust cover; 322, connecting plate; 323, first connecting ear; 324, connecting bracket; 325, groove; 326, filter screen; 327, second connecting ear; 328, mounting base; 329, rotating shaft; 3210, fan blade; 3211, cleaning rack; 3212, brush plate. Detailed Implementation

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0040] Reference Figures 1 to 4This is the first embodiment of the present invention. This embodiment provides a laser weeding water-cooled machine, including a heat dissipation unit 100, including a machine cover 110, a back plate 120 mounted on the machine cover 110, multiple sets of fans 130 embedded in the machine cover 110, a heat dissipation fin assembly 140 fixedly connected to one side of the back plate 120, and a U-shaped tube 150 passing through the heat dissipation fin assembly 140; the machine cover 110 and the back plate 120 form a closed space, and the back plate 120 is provided with an air inlet port 160;

[0041] It should be noted that the heat dissipation unit 100 includes a shroud 110, a backplate 120, multiple fans 130, a heat dissipation fin group 140, and a U-shaped tube 150. The shroud 110 is fixedly connected to the backplate 120 to form a relatively enclosed space. An air intake port 160 is provided on the backplate 120.

[0042] Multiple fans 130 are embedded in the shroud 110 to draw outside air into the shroud 110. The heat dissipation fin assembly 140 is fixedly connected to one side of the back plate 120, such as inside the shroud 110. A U-shaped tube 150 passes through the heat dissipation fin assembly 140. Cooling fluid provided by the cooling unit 200 flows through the U-shaped tube 150 to cool the heat dissipation fin assembly 140.

[0043] The airflow introduced by the fan 130 flows through the cooling heat sink fin assembly 140, and the air temperature decreases, forming cold air that is blown out from the air outlet of the shroud 110 and blows directly onto the laser reactor installed on one side of the heat sink unit 100, thereby cooling the laser reactor.

[0044] The refrigeration unit 200 includes a refrigeration housing 210, an inlet pipe 220 and an outlet pipe 230 disposed on the top of the refrigeration housing 210, and a compressor 250, a water tank 260 and a circulating water pump 270 built into the refrigeration housing 210; the inlet pipe 220 and the outlet pipe 230 are respectively connected to the two ends of the U-shaped pipe 150 through a connecting hose 240.

[0045] It should be noted that the refrigeration unit 200 includes a refrigeration housing 210, a water inlet pipe 220, a water outlet pipe 230, a compressor 250, a water tank 260, and a circulating water pump 270.

[0046] The refrigeration unit 210 is an independent unit structure, with the water inlet pipe 220 and water outlet pipe 230 located on the top of the refrigeration unit 210. The compressor 250, water tank 260, and circulating water pump 270 are all built into the interior of the refrigeration unit 210.

[0047] The inlet pipe 220, water tank 260, circulating water pump 270, compressor 250 and outlet pipe 230 are connected in sequence to form a circulation path for the coolant.

[0048] Specifically, the coolant in the water tank 260 is transported to the compressor 250 by the circulating water pump 270 for cooling and cooling down. After becoming cold coolant, it flows out from the outlet pipe 230 and enters the U-shaped pipe 150 of the heat dissipation unit 100 through the connecting hose 240.

[0049] After the coolant flows through the heat dissipation fin assembly 140 in the U-shaped tube 150, its temperature rises. It then returns to the refrigeration unit 200 through the water inlet pipe 220 and re-enters the water tank 260 to complete the circulation.

[0050] The heat dissipation unit 100 is installed on the side of the laser reactor, the cooling unit 200 is installed on the frame of the weeder, and the connecting hose 240 is a flexible hose.

[0051] It should be noted that the inlet pipe 220 and the outlet pipe 230 are respectively connected to the two ends of the U-shaped pipe 150 in the heat dissipation unit 100 through the connecting hose 240. The connecting hose 240 is a flexible hose, which allows the heat dissipation unit 100 and the cooling unit 200 to be arranged relatively flexibly.

[0052] In use, the heat dissipation unit 100 is installed on the side of the laser reactor with its air outlet facing the laser reactor, directly blowing cold air to it for cooling; the cooling unit 200 is installed in a suitable position on the weeder frame, such as the chassis or side space, and is connected to the heat dissipation unit 100 through the connecting hose 240. The split design avoids the problem of traditional integrated water chillers requiring a large installation space.

[0053] like Figure 2 As shown, in one optional embodiment, the filter unit 300 includes an intake pipe 310 connected to the intake port 160, and a filter assembly 320 disposed at the end of the intake pipe 310.

[0054] It should be noted that one end of the air intake pipe 310 is connected to the air intake port 160 on the back plate 120 of the heat dissipation unit 100, and the other end of the air intake pipe 310 is connected to the filter assembly 320. The filter assembly 320 is used to filter the air entering the heat dissipation unit 100 and can be installed in areas of the lawnmower with less dust.

[0055] like Figures 5 to 6 As shown, in one optional embodiment, the filter assembly 320 includes a dust cover 321, an annular filter screen 326, and a connecting plate 322;

[0056] The dust cover 321, the annular filter screen 326, and the connecting plate 322 together form a housing;

[0057] The outer wall of the dust cover 321 is fixedly connected to a first connecting ear 323, and the outer wall of the connecting plate 322 is fixedly connected to a connecting bracket 324. The connecting plate 322 and the first connecting ear 323 are fixedly connected by screws. The facing surfaces of the connecting plate 322 and the dust cover 321 are provided with a groove 325, and an annular filter screen 326 is placed in the groove 325.

[0058] The outer wall of the connecting plate 322 is fixedly connected with a second connecting ear 327 for connecting to the body of the weeder.

[0059] It should be noted that the dust cover 321, the annular filter 326, and the connecting plate 322 together constitute a housing.

[0060] Specifically, a first connecting ear 323 is fixedly connected to the outer wall of the dust cover 321, and a connecting bracket 324 is fixedly connected to the outer wall of the connecting plate 322. The connecting plate 322 and the first connecting ear 323 are fixedly connected by screws. A groove 325 is formed on the facing surfaces of the connecting plate 322 and the dust cover 321, and an annular filter screen 326 is placed in the groove 325. A second connecting ear 327 is also fixedly connected to the outer wall of the connecting plate 322 for connecting to the weeder body.

[0061] like Figures 5 to 6 As shown, as an optional embodiment, the filter assembly 320 further includes a fixed base 328 installed in the inner cavity of the dust cover 321, a rotating shaft 329 rotatably connected to the fixed base 328, a fan blade 3210 fixedly connected to the rotating shaft 329, and a cleaning frame 3211, with a brush plate 3212 fixedly connected to the tail end of the cleaning frame 3211.

[0062] The fan blade 3210 is located on the air inlet side of the dust cover 321, and the rotating shaft 329 extends along the axial direction of the dust cover 321, with one end inserted into the connecting plate 322 and limited by the connecting plate 322.

[0063] The cleaning frame 3211 is a spoke-shaped structure extending radially outward, and the brush plate 3212 is fixed to the tail end of the cleaning frame 3211 and extends along the axial direction of the annular filter screen 326.

[0064] It should be noted that a fixed base 328 is installed in the inner cavity of the dust cover 321, and a rotating shaft 329 is rotatably connected to the fixed base 328. A fan blade 3210 and a cleaning rack 3211 are fixedly connected to the rotating shaft 329.

[0065] A brush plate 3212 is fixedly connected to the tail end of the cleaning rack 3211. The fan blade 3210 is located on the air inlet side of the dust cover 321, that is, the end close to the air inlet pipe 310. The rotating shaft 329 extends along the axial direction of the dust cover 321, and one end of it is inserted into the connecting plate 322 and limited by the connecting plate 322 to ensure the stable rotation of the rotating shaft 329.

[0066] The brush plate 3212 is located inside the annular filter screen 326 and is in contact with the inner wall of the annular filter screen 326, and is used to clean along the inner wall of the filter screen 326 when rotating.

[0067] It should be noted that when the fan 130 of the heat dissipation unit 100 is started, outside air is drawn in, and the airflow enters the heat dissipation unit 100 through the filter component 320, the air intake pipe 310, and the air intake port 160 in sequence.

[0068] In the filter assembly 320, air is filtered through the filter screen 326 between the dust cover 321 and the connecting plate 322 and enters the inner cavity. It then flows to the fan blade 3210. The airflow drives the fan blade 3210 to rotate. The fan blade 3210 drives the rotating shaft 329 and the cleaning frame 3211 to rotate, thereby causing the brush plate 3212 to sweep along the inner wall of the filter screen 326, brushing off the dust attached to the inner wall of the filter screen 326 and preventing the filter screen from clogging.

[0069] like Figures 5 to 6 As shown, in one optional embodiment: the housing is in the shape of a frustum, wherein the connecting plate 322 is the bottom surface of the frustum, the annular filter screen 326 is the cylindrical section of the frustum, and the dust cover 321 is the conical surface of the frustum;

[0070] The conical structure of the dust cover 321 increases the airflow velocity as it flows from the large end to the small end of the frustum, thereby driving the fan blade 3210 to rotate.

[0071] It should be noted that, to further optimize the self-cleaning effect, the housing consisting of the dust cover 321, the annular filter 326, and the connecting plate 322 is designed in a frustum shape.

[0072] Among them, the connecting plate 322 is the bottom surface of the frustum, the annular filter screen 326 is the cylindrical section of the frustum, and the dust cover 321 is the conical surface of the frustum. According to Bernoulli's principle, when the airflow flows from the end of the frustum where the filter screen 326 is located to the tip of the dust cover 321 at the small end, which is connected to the end of the air intake pipe 310, the flow cross section gradually decreases and the airflow speed increases, thereby impacting the fan blade 3210 at a higher flow rate. This ensures that even when the fan speed 130 is low and the overall air volume is not large, the fan blade 3210 can obtain sufficient driving force to rotate, thus ensuring the reliability of the self-cleaning function.

[0073] like Figure 5 As shown, in one optional embodiment, the dust cover 321 and the connecting plate 322 are detachably fixedly connected by the first connecting ear 323, the connecting bracket 324 and the screws, so as to facilitate the replacement of the annular filter screen 326.

[0074] It should be noted that when the filter screen 326 needs to be replaced due to wear or severe blockage after long-term use, simply unscrew the screws, separate the dust cover 321 from the connecting plate 322, and you can take out the old filter screen 326 from the groove 325 and put in the new filter screen 326. The operation is simple.

[0075] Working principle:

[0076] The heat dissipation unit 100 is installed on the side of the laser reactor with its air outlet facing the laser reactor; the cooling unit 200 is installed in the empty space of the weeder frame; the filter assembly 320 is installed on the weeder in a less dusty position through the second connecting ear 327, and the filter assembly 320 is connected to the air inlet port 160 of the heat dissipation unit 100 by the air inlet pipe 310.

[0077] When the circulating water pump 270 and compressor 250 are started, the refrigeration unit 200 generates coolant: the coolant is transported from the water tank 260 to the compressor 250 for cooling and cooling, and then flows out from the outlet pipe 230 and enters the U-shaped pipe 150 of the heat dissipation unit 100 through the connecting hose 240.

[0078] When the fan 130 is turned on, outside air enters the heat dissipation unit 100 through the filter assembly 320, the air intake pipe 310, and the air intake port 160. In the filter assembly 320, the air is first filtered by the annular filter screen 326, and then enters the inner cavity of the frustum-shaped housing. After being accelerated in the conical contraction section, it impacts the fan blades 3210, driving the fan blades 3210 and the brush plate 3212 to rotate. The brush plate 3212 continuously cleans the inner wall of the filter screen 326.

[0079] The filtered clean air enters the housing 110 of the heat dissipation unit 100 and flows through the heat dissipation fin group 140, which has been cooled by the coolant in the U-shaped tube 150. The air temperature decreases, and the resulting cold air is blown out from the air outlet of the housing 110 and blows directly onto the laser reactor to cool it.

[0080] After heat exchange in the U-tube 150, the coolant returns to the refrigeration unit 200 through the inlet pipe 220, enters the water tank 260, and is once again transported by the circulating water pump 270 to the compressor 250 for cooling, forming a cycle.

[0081] When the filter 326 needs to be replaced, remove the filter assembly 320, unscrew the screws, separate the dust cover 321 from the connecting plate 322, take out the old filter 326, put in the new filter 326, and reassemble.

[0082] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A laser weeding water-cooled machine, characterized in that: include, The heat dissipation unit (100) includes a shroud (110), a backplate (120) mounted on the shroud (110), multiple fans (130) embedded in the shroud (110), a heat dissipation fin assembly (140) fixedly connected to one side of the backplate (120), and a U-shaped tube (150) penetrating the heat dissipation fin assembly (140); the shroud (110) and the backplate (120) form a closed space, and the backplate (120) is provided with an air intake port (160). The refrigeration unit (200) includes a refrigeration housing (210), an inlet pipe (220) and an outlet pipe (230) disposed on the top of the refrigeration housing (210), and a compressor (250), a water tank (260) and a circulating water pump (270) built into the refrigeration housing (210); the inlet pipe (220) and the outlet pipe (230) are respectively connected to the two ends of the U-shaped pipe (150) through connecting hoses (240).

2. The laser weeding water-cooled machine as described in claim 1, characterized in that: The inlet pipe (220), the water tank (260), the circulating water pump (270), the compressor (250), and the outlet pipe (230) are connected in sequence.

3. The laser weeding water-cooled machine as described in claim 1, characterized in that: The heat dissipation unit (100) is used to be installed on the side of the laser reactor, the cooling unit (200) is used to be installed on the frame of the weeder, and the connecting hose (240) is a flexible hose.

4. The laser weeding water-cooled machine as described in claim 1, characterized in that: It also includes a filter unit (300); The filter unit (300) includes an intake pipe (310) connected to the intake port (160) and a filter assembly (320) disposed at the end of the intake pipe (310).

5. The laser weeding water-cooled machine as described in claim 4, characterized in that: The filter assembly (320) includes a dust cover (321), an annular filter screen (326), and a connecting plate (322). The dust cover (321), the annular filter (326), and the connecting plate (322) together form a housing; The outer wall of the dust cover (321) is fixedly connected to a first connecting ear (323), and the outer wall of the connecting plate (322) is fixedly connected to a connecting frame (324). The connecting plate (322) and the first connecting ear (323) are fixedly connected by screws. The facing surfaces of the connecting plate (322) and the dust cover (321) are provided with grooves (325), and the annular filter screen (326) is placed in the grooves (325). The outer wall of the connecting plate (322) is fixedly connected to a second connecting ear (327) for connecting to the body of the weeder.

6. The laser weeding water-cooled machine as described in claim 5, characterized in that: The filter assembly (320) also includes a fixed base (328) installed in the inner cavity of the dust cover (321), a rotating shaft (329) rotatably connected to the fixed base (328), a fan blade (3210) fixedly connected to the rotating shaft (329), and a cleaning frame (3211), with a brush plate (3212) fixedly connected to the tail end of the cleaning frame (3211). The fan blade (3210) is located on the air inlet side of the dust cover (321), and the rotating shaft (329) extends along the axial direction of the dust cover (321), with one end inserted into the connecting plate (322) and limited by the connecting plate (322).

7. The laser weeding water-cooled machine as described in claim 6, characterized in that: The brush plate (3212) is located inside the annular filter screen (326) and is in contact with the inner wall of the annular filter screen (326), and is used to clean along the inner wall of the filter screen (326) when rotating.

8. The laser weeding water-cooled machine as described in claim 5, characterized in that: The housing is shaped like a frustum, wherein the connecting plate (322) is the bottom surface of the frustum, the annular filter screen (326) is the cylindrical section of the frustum, and the dust cover (321) is the conical surface of the frustum. The conical structure of the dust cover (321) increases the airflow velocity as it flows from the large end to the small end of the frustum, thereby driving the fan blades (3210) to rotate.

9. The laser weeding water-cooled machine as described in claim 5, characterized in that: The dust cover (321) and the connecting plate (322) are detachably fixedly connected by the first connecting ear (323), the connecting bracket (324) and screws, so as to facilitate the replacement of the annular filter screen (326).

10. The laser weeding water-cooled machine as described in claim 6, characterized in that: The cleaning rack (3211) is a radially outwardly extending spoke-shaped structure, and the brush plate (3212) is fixed to the tail end of the cleaning rack (3211) and extends along the axial direction of the annular filter screen (326).

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