CN112586482A

CN112586482A - Square straw burning gun

Info

Publication number: CN112586482A
Application number: CN202011589832.3A
Authority: CN
Inventors: 张存; 张建达; 张宁婷
Original assignee: Ningbo Yinzhou Tailongxing Welding Tools Co ltd
Current assignee: Ningbo Yinzhou Tailongxing Welding Tools Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-02

Abstract

The application provides a square straw burning gun, which comprises a handle, a gas tank, a connecting pipe and a spray head, wherein the handle is fixedly connected with one end of the connecting pipe; the tank body continuously conveys gas to the spray head through the switch regulating valve, the connecting pipe and the nozzle, after the gas is ignited at the spray head, flame is sprayed out from the air hole to burn weeds between the lower surface of the spray head and the ground, the noise is very low in the burning weeding process, and the influence on physical and psychological health of a user can be reduced; the device can be used immediately, for example, when one grass is struck, the gas is closed after the grass is burnt out, and then the next grass is searched, so that the device is light, high in efficiency and energy-saving.

Description

Square straw burning gun

Technical Field

The application relates to weeding device technical field especially relates to a square rifle of burning grass.

Background

Weeding device among the prior art utilizes the blade of high-speed rotation to get rid of the subaerial weeds of cutting usually, but the blade rotation needs motor drive, can produce a large amount of noises and vibrations in the motor working process, causes the injury to staff's physical and mental health, and the blade can produce noise and raise dust with air and grass collision in addition in cutting process, has further increased the injury to staff. Workers usually need to wear protective articles such as protective clothing, protective glasses, masks, gloves and the like, and the workers are easy to heatstroke when working in summer. Therefore, a weeding apparatus capable of quickly weeding and having low noise is required.

Disclosure of Invention

The application provides a square rifle of burning grass for solve the big problem of weeding device weeding in-process noise among the prior art.

In order to achieve the above purpose, the embodiments of the present application propose the following technical solutions:

the utility model provides a square rifle of burning grass, includes handle, gas jar, connecting pipe and shower nozzle, the handle with the wherein one end fixed connection of connecting pipe, the gas jar with handle fixed connection, the gas outlet of gas jar with the connecting pipe passes through the on-off control valve intercommunication, the other end of connecting pipe be equipped with the nozzle and with shower nozzle fixed connection, the lower surface of shower nozzle is equipped with align to grid's gas pocket, the gas pocket with the connecting pipe intercommunication, the lower surface of shower nozzle is the rectangle.

In some embodiments, the nozzle includes a box body, a cover plate and a burner, the opening of the box body faces downwards, the cover plate is covered on the opening of the box body, the cover plate is fixedly connected with the box body, the burner is located inside the opening of the box body, the burner is fixedly connected with the box body, the burner is parallel to the cover plate, uniformly arranged airflow channels are arranged on the burner, the box body is fixedly connected with the connecting pipe, the connecting pipe passes through the nozzle and is communicated with the inner space of the box body, the air holes are formed in the cover plate, the cover plate is rectangular, the air holes penetrate through the cover plate, the air holes are communicated with the airflow channels, and the airflow channels are communicated with the inner space of the box body.

In some embodiments, a partition plate is fixedly connected to the inner wall of the box body, the partition plate is located on one side, away from the cover plate, of the combustor, a gap is formed between the partition plate and the combustor, through holes are uniformly arranged on the partition plate, the partition plate and the inner wall of the box body surround to form a buffer cavity, and a port of one end, connected with the box body, of the connecting pipe is located inside the buffer cavity.

In some embodiments, the end of the connecting tube located inside the buffer chamber is ported parallel to the cover plate, and the central axis of the air flow channel is perpendicular to the cover plate.

In some embodiments, the handle includes a holding portion and a pulling portion, the holding portion and the pulling portion are integrally connected, the holding portion is fixedly connected to the connecting pipe, a holding space is provided between the holding portion and the pulling portion, the holding portion is detachably and fixedly connected to the connecting pipe, and the holding portion is in threaded connection with the connecting pipe.

In some embodiments, the holding portion includes a straight line segment and a curved segment, the straight line segment is integrally connected with the curved segment, a central axis of the straight line segment is tangent to a central axis of the curved segment, one end of the straight line segment, which is far away from the curved segment, is in threaded connection with the connecting pipe, and one end of the curved segment, which is far away from the straight line segment, is integrally connected with the pulling portion.

In some embodiments, the square burning straw gun further comprises a supporting device, the supporting device comprises a supporting rod and a rolling member, one end of the supporting rod is rotatably connected with the rolling member, and the other end of the supporting rod is connected with the spray head.

In some embodiments, the rolling member includes a roller rotatably connected to the support rod, a central axis of the roller relative to the support rod is parallel to the lower surface of the spray head, and the lower surface of the roller is lower than the lower surface of the spray head.

In some embodiments, the support rod is a hollow tubular structure, and one end of the support rod, which is far away from the roller, is fixedly connected with the spray head.

In some embodiments, the support rod is arranged obliquely, one end of the support rod close to the spray head is higher than the other end of the support rod, the roller is positioned on one side of the spray head close to the handle, and the center of gravity of the square grass burning gun is positioned right above the roller.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a square burning grass gun in the embodiment of the present application;

FIG. 2 is a schematic structural diagram of a support device of a square grass burning gun and a spray head connection of the square grass burning gun in the embodiment of the application;

FIG. 3 is a schematic structural diagram of a spray head of a square grass burning gun in the embodiment of the application;

fig. 4 is a schematic structural diagram of a handle of a square grass burning gun in the embodiment of the application.

Description of reference numerals:

100. a handle; 110. a grip portion; 111. a straight line segment; 112. a curved section; 120. a pulling part; 121. a first push surface; 122. a second push surface; 130. a holding space;

200. a spray head; 210. a box body; 211. a gas and air mixing chamber; 220. a cover plate; 230. a burner; 240. a partition plate; 241. a buffer chamber;

300. a support device; 310. a support bar; 320. a roller;

400. a gas tank;

500. and (4) connecting the pipes.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

In the embodiments of the present application, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," "some examples," or "possible implementations" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The following describes the square burning straw gun with reference to fig. 1 to 4.

Example one

Referring to fig. 1 to 4, the present embodiment provides a square straw burning gun, which includes a handle 100, a gas tank 400, a connecting pipe 500 and a nozzle 200, wherein the handle 100 is fixedly connected to one end of the connecting pipe 500, the gas tank 400 is fixedly connected to the handle 100, an air outlet of the gas tank 400 is communicated with the connecting pipe 500 through a switch regulating valve, a nozzle is installed at the other end of the connecting pipe 500 and is fixedly connected to the nozzle 200, uniformly arranged air holes are formed in a lower surface of the nozzle 200, the air holes are communicated with the connecting pipe 500, and the lower surface of the nozzle 200 is rectangular.

In some embodiments, the nozzle 200 includes a box 210, a cover 220 and a burner 230, the opening of the box 210 faces downward, the cover 220 covers the opening of the box 210, the cover 220 is fixedly connected with the box 210, the burner 230 is located inside the opening of the box 210, the burner 230 is fixedly connected with the box 210, the burner 230 is parallel to the cover 220, the burner 230 is in a ceramic plate structure, the burner 230 is provided with uniformly arranged airflow channels, the box 210 is fixedly connected with a connecting pipe 500, the connecting pipe 500 is communicated with the inner space of the box 210 through a nozzle, an air hole is formed in the cover 220, the cover 220 is rectangular, the air hole penetrates through the cover 220, the air hole is communicated with the airflow channels, and the airflow channels are communicated with the inner space of the box 210.

In some embodiments, a partition 240 is fixedly connected to the inner wall of the box body 210, the partition 240 is located on a side of the burner 230 away from the cover plate 220, a gap is formed between the partition 240 and the burner 230, through holes are uniformly arranged on the partition 240, the partition 240 and the inner wall of the box body 210 surround to form a buffer chamber 241, and a port at one end of the connection pipe 500 connected to the box body 210 is located inside the buffer chamber 241.

In some embodiments, the end of the connection pipe 500 located inside the buffer chamber 241 is ported parallel to the cover plate 220, and the central axis of the air flow channel is perpendicular to the cover plate 220.

In some embodiments, the handle 100 includes a holding portion 110 and a pulling portion 120, the holding portion 110 and the pulling portion 120 are integrally connected, the holding portion 110 is fixedly connected to the connection pipe 500, a holding space 130 is provided between the holding portion 110 and the pulling portion 120, the holding portion 110 is detachably and fixedly connected to the connection pipe 500, and the holding portion 110 is in threaded connection with the connection pipe 500.

In some embodiments, the grip portion 110 includes a straight line segment 111 and a curved segment 112, the straight line segment 111 is integrally connected to the curved segment 112, a central axis of the straight line segment 111 is tangent to a central axis of the curved segment 112, an end of the straight line segment 111 away from the curved segment 112 is screwed to the connection pipe 500, and an end of the curved segment 112 away from the straight line segment 111 is integrally connected to the pulling portion 120.

In some embodiments, the square burning straw gun further comprises a supporting device 300, the supporting device 300 comprises a supporting rod 310 and a rolling member, one end of the supporting rod 310 is rotatably connected with the rolling member, and the other end of the supporting rod 310 is connected with the spray head 200.

In some embodiments, the rolling member includes a roller 320, the roller 320 is rotatably connected to the support rod 310, a central axis of the roller 320 and the support rod 310 are parallel to the lower surface of the spray head 200, and the lower surface of the roller 320 is lower than the lower surface of the spray head 200.

In some embodiments, the supporting rod 310 has a hollow tubular structure, and an end of the supporting rod 310 away from the roller 320 is fixedly connected to the spraying head 200.

In some embodiments, the support rod 310 is disposed obliquely, one end of the support rod 310 close to the spray head 200 is higher than the other end, the roller 320 is located on one side of the spray head 200 close to the handle 100, and the center of gravity of the square burning grass gun is located right above the roller 320.

In the square burning grass gun provided by the embodiment, combustible gas such as natural gas is stored in the gas tank 400, a valve is arranged on the tank body, the valve is manually opened during use, and the gas is ignited at the spray head 200 through electronic ignition or open fire, wherein electronic ignition is preferably used in the embodiment. The handle 100 is held by hand, the spray head 200 is attached to the ground, the lower surface of the spray head 200 is approximately parallel to the ground, weeds are clamped in a space between the lower surface of the spray head 200 and the ground, the tank body continuously conveys gas to the spray head 200 through the switch adjusting valve and the connecting pipe 500, after the gas is ignited at the spray head 200, flames are sprayed out from the air holes, the weeds between the lower surface of the spray head 200 and the ground are burnt, the noise is very small in the burning weeding process, and the influence on the physical and mental health of a user can be reduced. The device can be used immediately, for example, when one grass is struck, the gas is closed after the grass is burnt out, and then the next grass is searched, so that the device is light, high in efficiency and energy-saving.

Example two

Referring to fig. 3, the embodiment provides a nozzle of a square burning grass gun, including a box body 210, a cover plate 220 and a burner 230, wherein an opening of the box body 210 faces downward, the cover plate 220 is covered on the opening of the box body 210, the cover plate 220 is fixedly connected with the box body 210, the burner 230 is located inside the opening of the box body 210, the burner 230 is fixedly connected with the box body 210, the burner 230 is parallel to the cover plate 220, uniformly arranged airflow channels are arranged on the burner 230, the box body 210 is fixedly connected with a connecting pipe 500 of the square burning grass gun, the connecting pipe 500 is communicated with the inner space of the box body 210, an air hole is arranged on the cover plate 220, the cover plate 220 is rectangular, the air hole penetrates through the cover plate 220, the air hole is communicated with the airflow channels.

In some embodiments, the buffer chamber 241 is located at one side of the center of the case 210.

In some embodiments, the cover 220 is a grid, and the air holes are surrounded by the grid.

In some embodiments, there is a gap between the cover plate 220 and the combustor 230.

In some embodiments, the clearance between the cover plate 220 and the combustor 230 is less than the clearance between the baffle 240 and the combustor 230.

The air holes, through holes, air flow channels, grids and other structures are small in size and difficult to represent in the drawings, so that the air holes, the through holes, the air flow channels, the grids and other structures are not drawn in the drawings.

According to the spray head of the square grass burning gun provided by the embodiment, the inner space of the box body 210 forms the gas and air mixing chamber 211, and the gas is fully mixed with the air after entering the gas and air mixing chamber 211, so that the combustion efficiency is improved, and the generation of harmful gases such as carbon monoxide is reduced. The combustion temperature is increased, thereby improving the weeding efficiency. The gas is compressed in the buffer cavity 241 and primarily mixed with the air, the gas flows through a 90-degree turn and then is diffused in the gas and air mixing chamber 211, and starts to burn after entering the airflow channel, so that the flame size and the flow rate of each airflow channel are more uniform, the flame heats the burner 230 after flowing through the airflow channel, the burner 230 is burned red, the gas enters a gap between the burner 230 and the cover plate 220 after passing through the airflow channel and burns again, the air holes are attached to the ground or blocked by weeds, the flame is extinguished, at the moment, the burner 230 burns the weeds by means of a large amount of waste heat, open fire is generated again, so that the subsequent gas can be continuously burnt, the gas can be recovered to burn after contacting the red burner 230, and the combustion continuity and the flame stability are improved. The cover plate 220 is arranged in a grid shape to prevent debris such as stones and stakes with large volume from contacting the burner 230, and to prevent the edge of the airflow channel on the burner 230 from being broken or blocked. The cover plate 220 is configured to be a rectangular structure, and moves vertically and horizontally along a direction parallel to the ground, so that a rectangular sweep area can be formed, and the omitted sweep rate and the repeated sweep rate are low.

EXAMPLE III

Referring to fig. 4, the present embodiment provides a handle of a square burning grass gun, which includes a holding portion 110 and a pulling portion 120, wherein the holding portion 110 and the pulling portion 120 are integrally connected, the holding portion 110 is fixedly connected to a connecting pipe 500 of the square burning grass gun, and a holding space 130 is disposed between the holding portion 110 and the pulling portion 120.

In some embodiments, the holding portion 110 is detachably and fixedly connected to the connection tube 500.

In some embodiments, grip 110 is threadably coupled to coupling tube 500.

In some embodiments, straight section 111 is a hollow tubular structure, and connecting tube 500 is inserted inside straight section 111.

In some embodiments, the curved section 112 is a hollow structure, and the inner space of the straight section 111 is communicated with the inner space of the curved section 112.

In some embodiments, the end of the pulling portion 120 away from the curved section 112 extends to the end of the straight section 111 away from the curved section 112.

In some embodiments, the holding space 130 is an ellipse, and the major axis of the ellipse of the holding space 130 is parallel to the central axis of the straight section 111.

In some embodiments, a first pushing surface 121 and a second pushing surface 122 are disposed on a surface of the pulling portion 120 away from the holding space 130, the first pushing surface 121 and the second pushing surface 122 are both arc-shaped, a central axis of the first pushing surface 121 is parallel to a central axis of the second pushing surface 122, the central axis of the first pushing surface 121 is parallel to the central axis of the holding space 130, the first pushing surface 121 is located at one end of the pulling portion 120 close to the curved section 112, the second pushing surface 122 is located at one end of the pulling portion 120 close to the straight section 111, and a center distance between the first pushing surface 121 and the second pushing surface 122 is smaller than a sum of a radius of the first pushing surface 121 and a radius of the second pushing surface 122.

The handle of the square burning torch provided by the embodiment is used for pushing the spray head 200 to move forwards or lifting the spray head 200 upwards by holding the holding part 110 with a hand when sweeping forwards, so that the spray head 200 is suspended above the ground. When backward sweeping, the pulling part 120 is held by hand, and the shower head 200 is pulled or dragged to move backward. The holding space 130 is for fingers to pass through, so as to facilitate the gripping of the holding portion 110 or the pulling portion 120. Handle 100 is connected with connecting pipe 500 is detachable, is convenient for change handle 100 or maintain handle 100, and the handle 100 structure or the handle 100 model that are suitable for in the operating mode of difference are different, select to be suitable for the handle 100 model that matches relatively more according to the operating mode, also can select to use different handle 100 according to the user of difference. When the first pushing surface 121 is held by a hand, the first pushing surface 121 is pushed, the front end of the lower surface of the spray head 200 can incline downwards, the rear end of the lower surface of the spray head 200 can tilt upwards, the second pushing surface 122 is held by a hand, when the second pushing surface 122 is pushed, the downward inclined angle of the front end of the lower surface of the spray head 200 is reduced, and the upward tilted angle of the rear end of the lower surface of the spray head 200 is reduced, so that different pushing modes are switched according to different slopes of the ground and the concentration degree of weeds, and a more appropriate use effect is achieved.

Example four

Referring to fig. 2, the present embodiment provides a supporting device for a square burning grass gun, which includes a supporting rod 310 and a rolling member, wherein one end of the supporting rod 310 is rotatably connected to the rolling member, the other end of the supporting rod 310 is connected to a nozzle of the square burning grass gun, the rolling member includes a roller 320, the roller 320 is rotatably connected to the supporting rod 310, a central axis of relative rotation of the roller 320 and the supporting rod 310 is parallel to a lower surface of the nozzle 200, and a lower surface of the roller 320 is lower than the lower surface of the nozzle 200.

In some embodiments, the support rod 310 is a hollow tubular structure.

In some embodiments, an end of the support rod 310 away from the roller 320 is fixedly connected to the nozzle 200.

In some embodiments, the support bar 310 is disposed obliquely, and one end of the support bar 310 near the showerhead 200 is higher than the other end.

In some embodiments, the roller 320 is located on the side of the spray head 200 adjacent to the handle of the square burning torch.

In some embodiments, the center of gravity of the square burning lance is located directly above the roller 320.

The supporting device of the square grass burning gun provided by the embodiment has the advantages that the structure is simple, the weight is light, one side of the spray head 200 close to the handle 100 can be supported, the spray head 200 is pushed by hands to move forwards or pulled to move backwards, the roller 320 rolls along the ground, the supporting rod 310 enables the lower surface of the spray head 200 to keep a stable distance with the ground, so that the spray head 200 is pushed and pulled to move along the ground at a more uniform speed, over-burning (weeds are continuously burnt after being burnt into ash) or under-burning (weeds are removed without finishing burning the spray head 200) is avoided, and the grass burning efficiency and the grass burning quality are improved. In the weeding process, the spray head 200 does not need to be lifted up by hands to be suspended above the ground, so that the use is more convenient.

The above examples are only for explaining the present application and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments of the present application without inventive contribution as needed after reading the present specification, but are protected by patent laws within the scope of the claims of the present application.

Claims

1. The utility model provides a square rifle of burning grass, its characterized in that, includes handle (100), gas jar (400), connecting pipe (500) and shower nozzle (200), handle (100) with wherein one end fixed connection of connecting pipe (500), gas jar (400) with handle (100) fixed connection, the gas outlet of gas jar (400) with connecting pipe (500) communicate through the switch governing valve, the other end of connecting pipe (500) be equipped with the nozzle and with shower nozzle (200) fixed connection, the lower surface of shower nozzle (200) is equipped with align to grid's gas pocket, the gas pocket with connecting pipe (500) intercommunication, the lower surface of shower nozzle (200) is the rectangle.

2. The square burning grass gun according to claim 1, wherein the nozzle (200) comprises a box body (210), a cover plate (220) and a burner (230), the opening of the box body (210) faces downwards, the cover plate (220) is covered on the opening of the box body (210), the cover plate (220) is fixedly connected with the box body (210), the burner (230) is positioned at the inner side of the opening of the box body (210), the burner (230) is fixedly connected with the box body (210), the burner (230) is parallel to the cover plate (220), the burner (230) is provided with uniformly arranged airflow channels, the box body (210) is fixedly connected with the connecting pipe (500), the connecting pipe (500) is communicated with the inner space of the box body (210) through the nozzle, and the air hole is arranged on the cover plate (220), the cover plate (220) is rectangular, the air holes penetrate through the cover plate (220), the air holes are communicated with the air flow channel, and the air flow channel is communicated with the inner space of the box body (210).

3. The square grass burning gun according to claim 2, wherein a partition plate (240) is fixedly connected to the inner wall of the box body (210), the partition plate (240) is located on one side of the burner (230) away from the cover plate (220), a gap is formed between the partition plate (240) and the burner (230), through holes are uniformly arranged in the partition plate (240), the partition plate (240) and the inner wall of the box body (210) surround to form a buffer cavity (241), and a port at one end of the connecting pipe (500) connected with the box body (210) is located inside the buffer cavity (241).

4. The square burning straw gun as claimed in claim 3, wherein the end of the connecting pipe (500) inside the buffer chamber (241) is ported parallel to the cover plate (220), and the central axis of the air flow channel is perpendicular to the cover plate (220).

5. The square burning grass gun according to claim 1, wherein the handle (100) comprises a holding part (110) and a pulling part (120), the holding part (110) is integrally connected with the pulling part (120), the holding part (110) is fixedly connected with the connecting pipe (500), a holding space (130) is arranged between the holding part (110) and the pulling part (120), the holding part (110) is detachably and fixedly connected with the connecting pipe (500), and the holding part (110) is in threaded connection with the connecting pipe (500).

6. The square grass burning gun as claimed in claim 5, wherein the holding part (110) comprises a straight line section (111) and a curved section (112), the straight line section (111) is integrally connected with the curved section (112), the central axis of the straight line section (111) is tangent to the central axis of the curved section (112), one end of the straight line section (111) far away from the curved section (112) is in threaded connection with the connecting pipe (500), and one end of the curved section (112) far away from the straight line section (111) is integrally connected with the pulling part (120).

7. The square burning grass gun as claimed in claim 1, further comprising a supporting device (300), wherein the supporting device (300) comprises a supporting rod (310) and a rolling member, one end of the supporting rod (310) is rotatably connected with the rolling member, and the other end of the supporting rod (310) is connected with the spray head (200).

8. The square burning grass gun as claimed in claim 7, wherein the rolling member comprises a roller (320), the roller (320) is rotatably connected with the support rod (310), a central axis of relative rotation of the roller (320) and the support rod (310) is parallel to the lower surface of the nozzle (200), and the lower surface of the roller (320) is lower than the lower surface of the nozzle (200).

9. The square burning grass gun as claimed in claim 8, wherein the support rod (310) is a hollow tubular structure, and one end of the support rod (310) far away from the roller (320) is fixedly connected with the spray head (200).

10. The square burning grass gun as claimed in claim 9, wherein the support bar (310) is arranged obliquely, one end of the support bar (310) close to the spray head (200) is higher than the other end, the roller (320) is arranged at one side of the spray head (200) close to the handle (100), and the gravity center of the square burning grass gun is arranged right above the roller (320).