Spraying device and slicer

Abstract

This invention provides a spraying device and a slicer. The spraying device includes an upper spraying section, a lower spraying section, an upper infusion pipe, and a lower infusion pipe. The upper spraying section has an upper solution chamber, and the lower spraying section has a lower solution chamber. The upper spraying section is installed above the lower spraying section, and the spraying range of the upper spraying section avoids the lower spraying section. The upper infusion pipe has at least two upper infusion ports spaced apart along the length of the upper spraying section, each infusion port communicating with the upper solution chamber. The lower infusion pipe has at least two lower infusion ports spaced apart along the length of the lower spraying section, each infusion port communicating with the lower solution chamber. In this design, the spraying range of the upper spraying section avoids the lower spraying section, solving the problem of obstruction between adjacent spraying sections and improving the spraying effect of the spraying device. Increasing the number of infusion ports enables rapid fluid diversion, thereby ensuring the uniformity and continuity of the spraying liquid supply, which can meet the spraying requirements of large-load silicon rods.

Description

Technical Field

[0001] This utility model relates to the field of slicer technology, and more specifically, to a spraying device and a slicer. Background Technology

[0002] The spray pipe of a photovoltaic slicing machine is a core component in the cutting process, mainly divided into two parts: cutting spray and blade retraction spray. The cutting spray provides cooling and lubrication during the cutting of silicon rods, thereby ensuring cutting quality; the blade retraction spray is applied during the blade retraction process to wash away the silicon powder generated during cutting, ensuring that the silicon wafer exits the wire mesh smoothly, while also ensuring slicing quality.

[0003] Traditional spray pipes have only one inlet for both cutting spray and retraction spray. When cutting large-load silicon rods, the spray liquid cannot quickly and evenly cover the silicon rods, resulting in poor spraying effect and affecting the slice quality. Utility Model Content

[0004] This invention provides a spraying device and a slicer to solve the problem in the prior art where the number of liquid inlets of the spraying device limits the spraying effect when cutting large-load silicon rods, thus affecting the slice quality.

[0005] To address the aforementioned problems, according to one aspect of this utility model, a spraying device is provided, comprising an upper spraying section, a lower spraying section, an upper infusion pipe, and a lower infusion pipe. The upper spraying section has an upper solution chamber, and the lower spraying section has a lower solution chamber. The upper spraying section is installed above the lower spraying section, and the spraying range of the upper spraying section avoids the lower spraying section. The upper infusion pipe has at least two upper infusion ports spaced apart along the length direction of the upper spraying section, each upper infusion port communicating with the upper solution chamber. The lower infusion pipe has at least two lower infusion ports spaced apart along the length direction of the lower spraying section, each lower infusion port communicating with the lower solution chamber.

[0006] Furthermore, the upper infusion tube includes an upper main tube and at least two upper branch tubes, each of which is connected to the upper main tube and has an upper infusion port; the lower infusion tube includes a lower main tube and at least two lower branch tubes, each of which is connected to the lower main tube and has a lower infusion port.

[0007] Furthermore, there are two upper branch pipes and two lower branch pipes. In the length direction of the upper spray section, the two upper branch pipes are located between the two lower branch pipes.

[0008] Furthermore, the length of the upper spray section is 1000-1500mm, and the length L of the lower spray section is 1000-1500mm; the lower infusion tube has two lower infusion ports, and the distance between the lower infusion ports and the nearest end of the lower spray section is 1 / 5L to 3 / 10L.

[0009] Furthermore, the lower spray section includes a lower spray body and a flow regulating plate installed on the lower spray body. The lower spray body has a lower solution chamber and a long spray nozzle communicating with the lower solution chamber. The flow regulating plate is used to adjust the opening of the long spray nozzle. The upper spray section is installed on the upper surface of the lower spray body.

[0010] Furthermore, the bottom of the lower spray body has a base plate, and a spray channel is formed between the upper surface of the base plate and the lower surface of the flow regulating plate. The spray channel is connected to the long spray nozzle.

[0011] Furthermore, the upper surface of the base plate is flat, the end of the base plate closer to the flow regulating plate is the first end, and the end of the base plate farther away from the flow regulating plate is the second end, wherein the thickness of the first end is less than the thickness of the second end.

[0012] Furthermore, the end of the base plate closest to the flow regulating plate is the first end, which protrudes from the flow regulating plate in the output direction of the spray channel.

[0013] Furthermore, the lower spray body or flow regulating plate has multiple elongated mounting holes, and the lower spray part also includes multiple fasteners, each of which passes through a mounting hole. The flow regulating plate is connected to the lower spray body through multiple fasteners. The relative positions of the fasteners and the corresponding mounting holes are adjustable to adjust the position of the flow regulating plate. By changing the position of the flow regulating plate, the occlusion area of ​​the flow regulating plate on the long spray nozzle is changed to adjust the opening of the long spray nozzle. And / or, a sealing gasket is provided between the flow regulating plate and the lower spray body. The bottom plate of the lower spray body protrudes from the long spray nozzle. The distance between the flow regulating plate and the bottom plate of the lower spray body is adjustable to adjust the opening of the long spray nozzle. The flow regulating plate is a flat plate or an L-shaped plate.

[0014] Furthermore, the lower spray section includes a lower spray body, which includes a support plate, a first structural member, and a second structural member. The upper spray section is installed on the upper side of the support plate, the first structural member is disposed on the lower side of the support plate, and the second structural member is disposed on the lower side of the first structural member. A first cavity is formed between the first structural member and the support plate, and a second cavity is formed between the first structural member, the second structural member, and the support plate. The spray liquid received in the first cavity is transported to the second cavity, and the gap between the lower end of the support plate and the second structural member forms a long spray nozzle communicating with the second cavity.

[0015] Furthermore, the sidewall of the first structural member has a fluid inlet, and the bottom wall of the first structural member has multiple diversion holes, which are spaced apart along the length of the first cavity, and the multiple diversion holes connect the first cavity and the second cavity; the lower spray body also includes multiple flow-slowing baffles, which are distributed on the inner wall of the second cavity; and / or, the support plate includes an inclined plate and a folded plate, the inclined plate is inclined relative to the horizontal plane, the upper spray part is installed on the upper side of the inclined plate, the first structural member is disposed on the lower side of the inclined plate, the upper end of the folded plate is connected to the lower end of the inclined plate, and the gap between the lower end of the folded plate and the bottom plate of the second structural member forms a long spray nozzle.

[0016] Furthermore, the upper spray section includes an upper spray body and multiple nozzles, the multiple nozzles being spaced apart along the length of the upper spray body, each nozzle being connected to the upper solution chamber within the upper spray body; the upper spray section also includes an adjustment structure, the adjustment structure being connected to the upper spray body and / or the multiple nozzles to adjust the spray angle of the multiple nozzles.

[0017] According to another aspect of the present invention, a slicing machine is provided, which includes a wire mesh and the above-mentioned spraying device. The spraying device is arranged in two symmetrical sets, with the wire mesh located between the two sets of spraying devices. The upper spraying part is used for blade retraction spraying, and the lower spraying part is used for cutting spraying.

[0018] In this design, the upper spray section is installed above the lower spray section, and the spray range of the upper spray section avoids the lower spray section, thus solving the problem of obstruction between adjacent spray sections and improving the spraying effect of the spraying device. At least two upper liquid inlets are spaced apart along the length of the upper spray section, and at least two lower liquid inlets are spaced apart along the length of the lower spray section. By setting multiple liquid inlets on the upper and lower liquid inlets, rapid fluid diversion can be achieved, allowing the fluid to be evenly distributed in the solution chamber of the longer spraying device, thereby ensuring the uniformity and continuity of the spraying liquid supply. This configuration can meet the spraying requirements of large-load silicon rods and improve the applicability of the spraying device. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of the spraying device provided in an embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of the spraying device provided in an embodiment of the present invention is shown from another angle;

[0022] Figure 3 It shows Figure 1 A cross-sectional view of one of the spray devices in the middle;

[0023] Figure 4 It shows Figure 1 A cross-sectional view of another set of spray devices symmetrically arranged in the middle.

[0024] The above figures include the following reference numerals:

[0025] 10. Upper spray section; 11. Upper spray body; 111. Upper solution chamber; 12. Nozzle; 13. Adjustment structure;

[0026] 20. Lower spray section; 21. Lower spray body; 211. Lower solution chamber; 2111. First chamber; 2112. Second chamber; 212. Long spray nozzle; 213. Support plate; 2131. Inclined plate; 2132. Bending plate; 214. First structural component; 2141. Fluid inlet; 2142. Diverting hole; 215. Second structural component; 2151. Base plate; 22. Flow regulating plate; 23. Fastener; 24. Flow damper;

[0027] 30. Connect the infusion tubing; 31. Connect the main tubing; 32. Connect the branch tubing; 321. Connect the infusion port;

[0028] 40. Lower the infusion tubing; 41. Lower the main tubing; 42. Lower the branch tubing; 421. Lower the infusion port;

[0029] 50. Spray channel; 60. Sealing gasket. Detailed Implementation

[0030] The technical solutions in at least one embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one embodiment is merely illustrative and is not intended to limit this application or its applications. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application.

[0031] like Figures 1 to 4As shown, an embodiment of the present invention provides a spraying device, including an upper spraying part 10, a lower spraying part 20, an upper infusion pipe 30, and a lower infusion pipe 40. The upper spraying part 10 has an upper solution chamber 111, and the lower spraying part 20 has a lower solution chamber 211. The upper spraying part 10 is installed on the upper side of the lower spraying part 20, and the spraying range of the upper spraying part 10 avoids the lower spraying part 20. The upper infusion pipe 30 has at least two upper infusion ports 321 spaced apart along the length direction of the upper spraying part 10, and each upper infusion port 321 is connected to the upper solution chamber 111. The lower infusion pipe 40 has at least two lower infusion ports 421 spaced apart along the length direction of the lower spraying part 20, and each lower infusion port 421 is connected to the lower solution chamber 211.

[0032] In this design, the upper spray section 10 is installed above the lower spray section 20, and the spray range of the upper spray section 10 avoids the lower spray section 20, thus solving the problem of obstruction between adjacent spray sections and improving the spraying effect of the spraying device. At least two upper liquid inlets 321 are spaced apart along the length of the upper spray section 10, and at least two lower liquid inlets 421 are spaced apart along the length of the lower spray section 20. By setting multiple liquid inlets on the upper liquid pipe 30 and the lower liquid pipe 40, rapid fluid diversion can be achieved, so that the fluid is evenly distributed in the solution chamber of the longer spraying device, thereby ensuring the uniformity and continuity of the spraying liquid supply. This configuration can meet the spraying requirements of large-load silicon rods and improve the applicability of the spraying device.

[0033] like Figure 1 , Figure 2 As shown, the upper infusion pipe 30 includes an upper main pipe 31 and at least two upper branch pipes 32, each upper branch pipe 32 being connected to the upper main pipe 31, and each upper branch pipe 32 having an upper infusion port 321; the lower infusion pipe 40 includes a lower main pipe 41 and at least two lower branch pipes 42, each lower branch pipe 42 being connected to the lower main pipe 41, and each lower branch pipe 42 having a lower infusion port 421. The fluid is evenly distributed to each branch pipe through the upper main pipe 31 and the lower main pipe 41, and then sprayed out from the infusion ports on the branch pipes, ensuring uniform distribution of the fluid within the spray device. This makes the flow rate and pressure of the fluid more uniform during the cutting process, avoiding local overheating or insufficient lubrication, and improving cutting quality and efficiency.

[0034] In this embodiment, there are two upper branch pipes 32 and two lower branch pipes 42. Along the length of the upper spray section 10, the two upper branch pipes 32 are located between the two lower branch pipes 42. By placing the two upper branch pipes 32 between the two lower branch pipes 42 along the length of the upper spray section 10, the distribution of the sprayed fluid on the silicon rod is more uniform. This also optimizes the structure, avoids direct interference between the upper spray section 10 and the lower spray section 20, and improves cutting quality and efficiency.

[0035] In this embodiment, the length of the upper spray section 10 is 1000-1500 mm, and the length L of the lower spray section 20 is 1000-1500 mm. The lower infusion pipe 40 has two lower infusion ports 421, and the distance between the lower infusion port 421 and the nearest end of the lower spray section 20 is 1 / 5L to 3 / 10L. To improve production efficiency and save time when changing silicon rods, large-capacity silicon rods are often used for cutting, and the length of large-capacity silicon rods is usually around 1200 mm. By extending the length of the spray device, it is ensured that the fluid can cover the entire cutting area of ​​the large-capacity silicon rod. At the same time, by optimizing the position of the lower infusion port 421, the distribution of the sprayed fluid on the silicon rod is more uniform, avoiding cutting quality problems caused by improper infusion port position.

[0036] like Figure 3 As shown, the lower spray section 20 includes a lower spray body 21 and a flow regulating plate 22 installed on the lower spray body 21. The lower spray body 21 has a lower solution chamber 211 and a long spray nozzle 212 communicating with the lower solution chamber 211. The flow regulating plate 22 is used to adjust the opening of the long spray nozzle 212. The upper spray section 10 is installed on the upper surface of the lower spray body 21. By changing the distance between the flow regulating plate 22 and the bottom plate of the lower spray body 21, the opening of the long spray nozzle 212 is adjusted, thereby controlling the flow rate and distribution of the spray fluid, ensuring the spraying effect, making the spray flow more uniform, and improving product quality.

[0037] like Figure 3 , Figure 4 As shown, the bottom of the lower spray body 21 has a base plate 2151. A spray channel 50 is formed between the upper surface of the base plate 2151 and the lower surface of the flow regulating plate 22. The spray channel 50 is connected to the long spray nozzle 212. The spray channel 50 enables the smooth flow of spray fluid from the lower inlet pipe 40 to the long spray nozzle 212, making the flow rate and pressure of the spray fluid more stable during the cutting process and improving the cutting quality.

[0038] In this embodiment, the upper surface of the base plate 2151 is flat. The end of the base plate 2151 closer to the flow regulating plate 22 is the first end, and the end of the base plate 2151 farther from the flow regulating plate 22 is the second end. The thickness of the first end is less than the thickness of the second end. The lower surface of the base plate 2151 is chamfered to reduce the thickness of the base plate. At the same time, in order to maintain the distance between the spray device and the wire mesh, the position of the spray device is adaptively adjusted. This setting increases the installation distance between the spray device and other devices above it, and also avoids interference between the adjusted base plate 2151 and the wire mesh.

[0039] In this embodiment, the end of the base plate 2151 closest to the flow regulating plate 22 is the first end, which protrudes from the flow regulating plate 22 in the output direction of the spray channel 50. By extending the first end of the base plate 2151, the slow flow length is increased, ensuring smooth flow of the spray fluid, making the flow rate and pressure of the spray liquid more stable during the cutting process, ensuring the continuity of the spray fluid at low inlet volume, and making the cutting quality more reliable.

[0040] In this embodiment, the lower spray body 21 or the flow regulating plate 22 has multiple elongated mounting holes. The lower spray part 20 also includes multiple fasteners 23, each of which passes through a mounting hole. The flow regulating plate 22 is connected to the lower spray body 21 through multiple fasteners 23. The relative positions of the fasteners 23 and the corresponding mounting holes are adjustable to adjust the position of the flow regulating plate 22. By changing the position of the flow regulating plate 22, the area of ​​the flow regulating plate 22 blocking the long spray nozzle 212 is changed, thereby adjusting the opening of the long spray nozzle 212.

[0041] The position of the flow regulating plate 22 is adjusted by adjusting the relative position of the fastener 23 in the corresponding mounting hole, thereby adjusting the opening of the long spray nozzle 212. When the flow regulating plate 22 is adjusted upward, the opening of the long spray nozzle 212 increases, and the liquid flow rate increases; when the flow regulating plate 22 is adjusted downward, the opening of the long spray nozzle 212 decreases, and the liquid flow rate decreases.

[0042] A sealing gasket 60 is provided between the flow regulating plate 22 and the lower spray body 21. The bottom plate 2151 of the lower spray body 21 protrudes from the long spray nozzle 212. The distance between the flow regulating plate 22 and the bottom plate 2151 of the lower spray body 21 is adjustable to adjust the opening of the long spray nozzle 212. The flow regulating plate 22 can be a flat plate or an L-shaped plate. By providing the sealing gasket 60, the sealing performance between the flow regulating plate 22 and the lower spray body 21 is improved. Specifically, when the flow regulating plate 22 is an L-shaped plate, the longer transition structure makes the spray fluid in the lower spray body 21 more stable. However, since the L-shaped plate has high requirements for flatness, when the requirements for the slow flow effect are lower, the flow regulating plate 22 can be a flat plate, which is convenient for processing and manufacturing, and saves production costs.

[0043] In this embodiment, the lower spray section 20 includes a lower spray body 21, which includes a support plate 213, a first structural member 214, and a second structural member 215. The upper spray section 10 is mounted on the upper side of the support plate 213. The first structural member 214 is disposed on the lower side of the support plate 213, and the second structural member 215 is disposed on the lower side of the first structural member 214. A first cavity 2111 is formed between the first structural member 214 and the support plate 213, and a second cavity 2112 is formed between the first structural member 214, the second structural member 215, and the support plate 213. The spray liquid received in the first cavity 2111 is transported to the second cavity 2112. The gap between the lower end of the support plate 213 and the second structural member 215 forms a long spray nozzle 212 communicating with the second cavity 2112. Through multi-stage diversion and slow-flow settings, the uniform distribution of the spray fluid is ensured, the spraying effect is improved, the uniformity and stability of the spraying are significantly improved, and the product quality is further enhanced.

[0044] In this embodiment, the sidewall of the first structural member 214 has a fluid inlet 2141, and the bottom wall of the first structural member 214 has a plurality of diversion holes 2142. The plurality of diversion holes 2142 are spaced apart along the length direction of the first cavity 2111, and the plurality of diversion holes 2142 connect the first cavity 2111 and the second cavity 2112. The lower spray body 21 also includes a plurality of slow-flow baffles 24, which are distributed on the inner wall of the second cavity 2112.

[0045] Multiple diversion holes 2142 are spaced apart along the length of the first cavity 2111. Water flowing into the first cavity 2111 from the fluid inlet 2141 enters the second cavity 2112 through the multiple diversion holes 2142, which buffers the fluid. Multiple flow damping baffles 24 are set to further buffer the fluid, which not only avoids the vibration of the equipment caused by fluid impact, affecting the operation and service life of the equipment, but also ensures the continuous and stable flow of the spray fluid and avoids the phenomenon of flow interruption.

[0046] The support plate 213 includes an inclined plate 2131 and a folded plate 2132. The inclined plate 2131 is inclined relative to the horizontal plane. The upper spray section 10 is installed on the upper side of the inclined plate 2131. The first structural member 214 is disposed on the lower side of the inclined plate 2131. The upper end of the folded plate 2132 is connected to the lower end of the inclined plate 2131. The gap between the lower end of the folded plate 2132 and the bottom plate 2151 of the second structural member 215 forms a long spray nozzle 212. The inclined plate 2131 separates the upper spray section 10 and the first structural member 214, and at the same time serves as a guide and support. The upper end of the folded plate 2132 is connected to the lower end of the inclined plate 2131. This arrangement optimizes the internal structure of the equipment, and the downward orientation of the folded plate 2132 avoids obstructing the upper spray section 10.

[0047] In this embodiment, the upper spray section 10 includes an upper spray body 11 and a plurality of nozzles 12. The plurality of nozzles 12 are spaced apart along the length direction of the upper spray body 11, and each nozzle 12 is connected to the upper solution chamber 111 inside the upper spray body 11. The upper spray section 10 also includes an adjustment structure 13, which is connected to the upper spray body 11 and / or the plurality of nozzles 12 to adjust the spray angle of the plurality of nozzles 12. The nozzles 12 facilitate the spraying of fluid from the upper solution chamber 111 to achieve the function of cooling or lubrication. The nozzles 12 improve the spraying accuracy. The plurality of nozzles 12 are spaced apart along the length direction of the upper spray body 11, which greatly improves the spraying efficiency. By adjusting the spray angle of the plurality of nozzles 12 through the adjustment structure 13, the fluid direction can be adjusted according to the real-time spraying requirements, further ensuring the spraying efficiency.

[0048] An embodiment of this utility model also provides a slicing machine, which includes a wire mesh and the aforementioned spraying device. The spraying device consists of two symmetrically arranged sets, with the wire mesh located between the two sets of spraying devices. The upper spraying section 10 is used for blade retraction spraying, and the lower spraying section 20 is used for cutting spraying. This arrangement satisfies the cooling and lubrication requirements during cutting and blade retraction. Furthermore, by increasing the number of inlet ports, the structural layout of the spraying device is optimized, improving the spraying uniformity and operational convenience of the equipment. It meets the spraying requirements for large-load silicon rods, significantly enhancing the cooling and lubrication effects during cutting and blade retraction. Simultaneously, it ensures the continuity of the spraying fluid at low inlet volumes, reducing wire jamming rates and improving cutting quality and production efficiency.

[0049] The above descriptions are merely some embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0050] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification.

[0051] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0053] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0054] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0055] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

Claims

1. A spraying device, characterized in that, The system includes an upper spray section (10), a lower spray section (20), an upper infusion tube (30), and a lower infusion tube (40). The upper spray section (10) has an upper solution chamber (111), and the lower spray section (20) has a lower solution chamber (211). The upper spray section (10) is installed on the upper side of the lower spray section (20), and the spray range of the upper spray section (10) avoids the lower spray section (20). The upper infusion tube (30) has at least two upper infusion ports (321) spaced apart along the length direction of the upper spray section (10), and each upper infusion port (321) is connected to the upper solution chamber (111). The lower infusion tube (40) has at least two lower infusion ports (421) spaced apart along the length direction of the lower spray section (20), and each lower infusion port (421) is connected to the lower solution chamber (211).

2. The spraying device according to claim 1, characterized in that, The upper infusion tube (30) includes an upper main tube (31) and at least two upper branch tubes (32), each of the upper branch tubes (32) being connected to the upper main tube (31), and each of the upper branch tubes (32) having an upper infusion port (321); the lower infusion tube (40) includes a lower main tube (41) and at least two lower branch tubes (42), each of the lower branch tubes (42) being connected to the lower main tube (41), and each of the lower branch tubes (42) having a lower infusion port (421).

3. The spraying device according to claim 2, characterized in that, There are two upper branch pipes (32) and two lower branch pipes (42). In the length direction of the upper spray section (10), the two upper branch pipes (32) are located between the two lower branch pipes (42).

4. The spraying device according to claim 2, characterized in that, The length of the upper spray section (10) is 1000-1500mm, and the length L of the lower spray section (20) is 1000-1500mm; the lower infusion tube (40) has two lower infusion ports (421), and the distance between the lower infusion port (421) and the nearest end of the lower spray section (20) is 1 / 5L to 3 / 10L.

5. The spraying device according to claim 1, characterized in that, The lower spray section (20) includes a lower spray body (21) and a flow regulating plate (22) installed on the lower spray body (21). The lower spray body (21) has a lower solution chamber (211) and a long spray nozzle (212) communicating with the lower solution chamber (211). The flow regulating plate (22) is used to adjust the opening of the long spray nozzle (212). The upper spray section (10) is installed on the upper surface of the lower spray body (21).

6. The spraying device according to claim 5, characterized in that, The bottom of the lower spray body (21) has a base plate (2151), and a spray channel (50) is formed between the upper surface of the base plate (2151) and the lower surface of the flow regulating plate (22), and the spray channel (50) is connected to the long spray nozzle (212).

7. The spraying device according to claim 6, characterized in that, The upper surface of the base plate (2151) is flat. The end of the base plate (2151) closer to the flow regulating plate (22) is the first end, and the end of the base plate (2151) away from the flow regulating plate (22) is the second end. The thickness of the first end is less than the thickness of the second end.

8. The spraying device according to claim 6, characterized in that, The end of the base plate (2151) near the flow regulating plate (22) is the first end, which protrudes from the flow regulating plate (22) in the output direction of the spray channel (50).

9. The spraying device according to claim 5, characterized in that, The lower spray body (21) or the flow regulating plate (22) has multiple elongated mounting holes. The lower spray part (20) also includes multiple fasteners (23), each of which passes through one of the mounting holes. The flow regulating plate (22) is connected to the lower spray body (21) through multiple fasteners (23). The relative positions of the fasteners (23) and the corresponding mounting holes are adjustable to adjust the position of the flow regulating plate (22). By changing the position of the flow regulating plate (22), the blocking area of ​​the flow regulating plate (22) on the long spray nozzle (212) is changed to adjust the opening of the long spray nozzle (212). And / or, a sealing gasket (60) is provided between the flow regulating plate (22) and the lower spray body (21), the bottom plate (2151) of the lower spray body (21) protrudes from the long spray nozzle (212), the distance between the flow regulating plate (22) and the bottom plate (2151) of the lower spray body (21) is adjustable to adjust the opening of the long spray nozzle (212), the flow regulating plate (22) is a flat plate, or the flow regulating plate (22) is an L-shaped plate.

10. The spraying device according to claim 1, characterized in that, The lower spray section (20) includes a lower spray body (21), which includes a support plate (213), a first structural member (214), and a second structural member (215). The upper spray section (10) is mounted on the upper side of the support plate (213), the first structural member (214) is disposed on the lower side of the support plate (213), and the second structural member (215) is disposed on the lower side of the first structural member (214). The first structural member (214) and... A first cavity (2111) is formed between the support plates (213), and a second cavity (2112) is formed between the first structural member (214), the second structural member (215), and the support plate (213). The spray liquid received by the first cavity (2111) is transported to the second cavity (2112). The gap between the lower end of the support plate (213) and the second structural member (215) forms a long spray nozzle (212) that communicates with the second cavity (2112).

11. The spraying device according to claim 10, characterized in that, The first structural member (214) has a fluid inlet (2141) on its sidewall and a plurality of diversion holes (2142) on its bottom wall. The plurality of diversion holes (2142) are spaced apart along the length of the first cavity (2111) and the plurality of diversion holes (2142) connect the first cavity (2111) and the second cavity (2112). The lower spray body (21) also includes a plurality of slow-flow baffles (24), which are distributed on the inner wall of the second cavity (2112). And / or, the support plate (213) includes an inclined plate (2131) and a folded plate (2132), the inclined plate (2131) is inclined relative to the horizontal plane, the upper spray part (10) is installed on the upper side of the inclined plate (2131), the first structural member (214) is disposed on the lower side of the inclined plate (2131), the upper end of the folded plate (2132) is connected to the lower end of the inclined plate (2131), and the gap between the lower end of the folded plate (2132) and the bottom plate (2151) of the second structural member (215) forms the long spray nozzle (212).

12. The spraying device according to claim 1, characterized in that, The upper spray section (10) includes an upper spray body (11) and a plurality of nozzles (12). The plurality of nozzles (12) are spaced apart on the upper spray body (11) along the length direction of the upper spray body (11), and each nozzle (12) is connected to the upper solution chamber (111) in the upper spray body (11). The upper spray section (10) also includes an adjustment structure (13), which is connected to the upper spray body (11) and / or the plurality of nozzles (12) to adjust the spray angle of the plurality of nozzles (12).

13. A slicer, characterized in that, The slicer includes a wire mesh and a spraying device as described in any one of claims 1 to 12, wherein the spraying device is arranged in two symmetrical groups, and the wire mesh is located between the two groups of spraying devices; wherein the upper spraying part (10) is used for blade retraction spraying, and the lower spraying part (20) is used for cutting spraying.

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