A spraying device

Abstract

The utility model relates to the technical field of UV paint, and discloses a spraying device, including a supporting plate, a fixing tube fixedly connected to the upper surface of the supporting plate, a liquid isolating plate fixedly connected to the end of the fixing tube away from the supporting plate, a liquid storage tube fixedly connected to the outer surface of the liquid isolating plate away from the fixing tube, a column collecting plate rotatably connected to the outer surface of the liquid storage tube away from the liquid isolating plate, a soft nozzle fixedly connected to the inner surface of the column collecting plate, an auxiliary rotating ring fixedly connected to the outer surface of the column collecting plate close to the supporting plate, and a liquid storage tube rotatably connected to the inner surface of the auxiliary rotating ring. In the spraying device, the pushing frame drives the push pulley to rotate through the extension rod during the rotation process, so that the teeth of the push pulley push the sliding top plate to lift, the spring of the rebound rod is squeezed through the return pressure frame during the lifting of the sliding top plate, and the pressure plate is lifted during the lifting of the sliding top plate, so that the pressure plate pushes the spray paint in the liquid storage tube into the soft nozzle, and the paint is accurately touched up at the position where the paint needs to be touched up.

Description

Technical Field

[0001] The utility model relates to the technical field of UV paint, in particular to a spraying device. Background Art

[0002] Another explanation for UV paint is ultraviolet light-curing paint, which is referred to as UV paint. It is named after the curing method of paint. It is a kind of paint that can quickly cure into a film within a few seconds under the irradiation of ultraviolet rays. The main characteristics of UV paint are: after strong ultraviolet light curing treatment, stable color, long-lasting newness, etc.

[0003] In the prior art, since the spraying force is strong and the spraying range is relatively fixed during the painting process, some narrow dead corners will be ignored during the spraying process and need additional touch-up paint. However, due to the spraying range and force, the touch-up paint may cover the original paint and make the paint surface thicker. If the spray device is not reset in time after use, the viscosity of the paint itself may cause adhesion inside the spray device, affecting the next use. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a spray device, which has the advantage of being able to finely adjust the spraying angle of the device according to the specific needs of the user, and extend the spray port to a narrow position to spray the UV paint therein to some dead corners. At the same time, the spray device in the device automatically resets after the UV paint therein is used, so as to prevent the internal devices from sticking to each other and affecting the next use of the device. It solves the problem that due to the strong spraying force and the relatively fixed spraying range during the spraying process, some narrow dead corners are ignored during the spraying process and need additional touch-up paint. However, due to the spraying range and force, the touch-up paint may cover the original paint and make the paint surface thicker. In addition, if the spray device is not reset in time after use, the viscosity of the paint itself may cause adhesion inside the spray device and affect the next use.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spraying device, including a supporting plate, a fixing tube fixedly connected to the upper surface of the supporting plate, a liquid isolating plate fixedly connected to the end of the fixing tube away from the supporting plate, a liquid storage tube fixedly connected to the outer surface of the liquid isolating plate away from the fixing tube, a column collecting plate rotatably connected to the outer surface of the liquid storage tube away from the liquid isolating plate, a soft spray pipe fixedly connected to the inner surface of the column collecting plate, an auxiliary rotating ring fixedly connected to the outer surface of the column collecting plate close to the supporting plate, a liquid storage tube rotatably connected to the inner surface of the auxiliary rotating ring, a liquid pressure plate slidably connected to the inner surface of the liquid pressure plate, a heating column fixedly connected to the outer circumference of the heating column The outer surface is slidably connected with a liquid isolation plate, the outer circumferential surface of the heating column is fixedly connected with an auxiliary lifting frame, the outer surface of the auxiliary lifting frame is fixedly connected with a sliding top plate, the outer surface of the sliding top plate away from the bottom support plate is fixedly connected with a pressure liquid plate, the outer surface of the sliding top plate is slidably connected with the liquid isolation plate, the outer surface of the sliding top plate is fixedly connected with a back pressure frame, the inner surface of the back pressure frame is slidably connected with a rebound rod, the lower end of the rebound rod is fixedly connected with the bottom support plate, the end of the rebound rod away from the bottom support plate is fixedly connected with the liquid isolation plate, the sliding top plate teeth are meshed with a push pulley, the inner surface of the push pulley is fixedly connected with an extension rod, the outer circumferential surface of the extension rod is rotatably connected with a firmware tube, and the outer circumferential surface of the extension rod is fixedly connected with the pushing frame.

[0008] In some embodiments, the firmware tube is a circular tube, the outer circumferential surface of the circular tube is provided with a circular hole that penetrates to the inner wall of the circular tube, the inner surface of the circular hole is rotatably connected to an extension rod, the lower end of the circular tube is fixedly connected to a supporting bottom plate, and the end of the circular tube away from the supporting bottom plate is fixedly connected to a liquid isolation plate.

[0009] In some embodiments, the liquid isolation plate is a circular plate, a fixing tube is fixedly connected to the lower surface of the circular plate, a liquid storage tube is fixedly connected to the outer surface of the circular plate away from the fixing tube, a square hole is provided on the outer surface of the circular plate close to the fixing tube, a sliding top plate is slidably connected to the inner surface of the square hole, two circular holes are provided on the outer surface of the circular plate close to the fixing tube, and a heating column is slidably connected to the inner surface of the circular hole.

[0010] In some embodiments, the column collecting plate is a circular plate with a circular hole at the center of the circular plate, a soft nozzle is fixedly connected to the inner surface of the circular hole, and an annular groove is provided on the outer surface of the circular plate close to the bottom plate, and the width of the annular groove is consistent with the diameter of the heating column.

[0011] In some embodiments, the liquid pressure plate is a circular plate, the outer circumference of the circular plate is slidably connected to the inner wall of the liquid storage tube, the outer surface of the circular plate is provided with two circular holes, the inner surface of the circular holes is fixedly connected to the heating column, and the outer surface of the circular plate close to the bottom plate is fixedly connected to the sliding top plate.

[0012] In some embodiments, the sliding top plate is a rectangular plate, the outer surface of the rectangular plate close to the extension rod is provided with teeth, the teeth are engaged with a push pulley, the outer surface of the rectangular plate away from the bottom plate is fixedly connected to a pressure liquid plate, the outer surface of the rectangular plate is fixedly connected to an auxiliary lifting frame, and the outer surface of the rectangular plate is fixedly connected to a back pressure frame.

[0013] In some embodiments, the rebound rod is a circular rod, the outer circumferential surface of the circular rod is slidably connected to a back-pressure frame, the lower end of the circular rod is fixedly connected to a supporting bottom plate, the upper end of the circular rod is fixedly connected to a liquid isolation plate, the outer circumferential surface of the circular rod is slidably connected to a spring, one end of the spring is fixedly connected to the back-pressure frame, and the end of the spring away from the back-pressure frame is fixedly connected to the liquid isolation plate.

[0014] In some embodiments, the push pulley is a circular disk with a circular hole at the center of the disk, an extension rod fixedly connected to the inner surface of the circular hole, and teeth are provided on two-thirds of the outer circumference of the circular disk, and the teeth are meshed with a sliding top plate.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a spraying device with the following beneficial effects:

[0017] 1. The spraying device drives the push pulley to rotate through the extension rod during the rotation of the push frame, so that the teeth of the push pulley push the sliding top plate to lift up. During the lifting of the sliding top plate, the spring of the rebound rod is squeezed by the return pressure frame, and the pressure plate is driven to lift up during the lifting of the sliding top plate, so that the pressure plate slowly pushes the spray paint in the liquid storage tube into the soft spray pipe, and accurately touches up the paint at the position where the paint needs to be touched up.

[0018] 2. For the spraying device, after the push pulley rotates two-thirds, the push pulley no longer meshes with the sliding top plate, so that the sliding top plate itself is pushed down by the spring of the rebound rod, so that the spring of the rebound rod pushes the return pressure frame to drive the sliding top plate to automatically reset, so as to ensure that the device will not be reset for a long time, causing the pressure liquid plate and the column collecting plate to stick to each other and affect the reuse of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the push frame of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the column receiving plate of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the rebound rod of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the sliding top plate of the utility model.

[0023] In the figure:

[0024] Bottom support plate 1; fastener tube 2; liquid partition plate 3; liquid storage tube 4; column collecting plate 5; soft nozzle 6; auxiliary rotating ring 7; liquid pressure plate 8; heating column 9; auxiliary lifting frame 10; sliding top plate 11; return pressure frame 12; rebound rod 13; push pulley 14; extension rod 15; push frame 16. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0029] When in use, the spraying device may make slight adjustments to the spraying angle of the device according to the specific needs of the user, and extend the spray port to a narrow position to spray the UV paint to some blind spots. At the same time, the spraying device in the device automatically resets after the UV paint is used up to prevent the internal devices from sticking to each other and affecting the next use of the device.

[0030] In the related art, since the spraying force is strong and the spraying range is relatively fixed during the painting process, some narrow dead corners will be ignored during the spraying process and need to be additionally touched up with paint. However, due to the spraying range and force, the touch-up paint may cover the original paint and make the paint surface thicker. In addition, if the spray device is not reset in time after use, the viscosity of the paint itself may cause adhesion inside the spray device, affecting the next use.

[0031] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a spraying device. When it is needed, the column receiving plate 5 is rotated so that the soft spray pipe 6 is aligned with the position where the paint needs to be touched up, and the pushing frame 16 is driven to rotate by an external power source. During the rotation of the pushing frame 16, the extension rod 15 drives the push pulley 14 to rotate, so that the teeth of the push pulley 14 push the sliding top plate 11 to lift. During the lifting of the sliding top plate 11, the spring of the rebound rod 13 is squeezed by the return pressure frame 12, and the pressure plate 8 is driven to move forward during the lifting of the sliding top plate 11. The paint in the liquid storage tube 4 is slowly pushed into the soft spray pipe 6 by the push pulley 14, and the position where the paint needs to be touched up is sprayed. When the push pulley 14 rotates two-thirds, the liquid pressure plate 8 is also fitted with the column receiving plate 5. At this time, the push pulley 14 is no longer engaged with the sliding top plate 11, so that the sliding top plate 11 itself is pushed down by the spring of the rebound rod 13, so that the spring of the rebound rod 13 pushes the return pressure frame 12 to drive the sliding top plate 11 to automatically reset, so as to ensure that the device will not be reset for a long time, causing the liquid pressure plate 8 and the column receiving plate 5 to stick to each other and affect the repeated use of the device.

[0032] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0033] Combination Figure 1-Figure 4, an embodiment of the present application provides a spraying device, including a supporting plate 1, a fixing tube 2 is fixedly connected to the upper surface of the supporting plate 1, a liquid isolating plate 3 is fixedly connected to the end of the fixing tube 2 away from the supporting plate 1, a liquid storage tube 4 is fixedly connected to the outer surface of the liquid isolating plate 3 away from the fixing tube 2, a column collecting plate 5 is rotatably connected to the outer surface of the liquid storage tube 4 away from the liquid isolating plate 3, a soft nozzle 6 is fixedly connected to the inner surface of the column collecting plate 5, an auxiliary rotating ring 7 is fixedly connected to the outer surface of the column collecting plate 5 close to the supporting plate 1, the inner surface of the auxiliary rotating ring 7 is rotatably connected to the liquid storage tube 4, a liquid pressure plate 8 is slidably connected to the inner surface of the liquid storage tube 4, a heating column 9 is fixedly connected to the inner surface of the liquid pressure plate 8, the outer circumferential surface of the heating column 9 is slidably connected to the liquid isolating plate 3, and the outer surface of the heating column 9 An auxiliary lifting frame 10 is fixedly connected to the circumferential surface, a sliding top plate 11 is fixedly connected to the inner surface of the outer surface of the auxiliary lifting frame 10, a pressure liquid plate 8 is fixedly connected to the outer surface of the sliding top plate 11 away from the bottom support plate 1, a liquid isolation plate 3 is slidably connected to the outer surface of the sliding top plate 11, a back pressure frame 12 is fixedly connected to the outer surface of the sliding top plate 11, a rebound rod 13 is slidably connected to the inner surface of the back pressure frame 12, the lower end of the rebound rod 13 is fixedly connected to the bottom support plate 1, and the end of the rebound rod 13 away from the bottom support plate 1 is fixedly connected to the liquid isolation plate 3, the sliding top plate 11 is meshed with teeth with a push pulley 14, the inner surface of the push pulley 14 is fixedly connected to an extension rod 15, the outer circumferential surface of the extension rod 15 is rotatably connected to the hardware tube 2, and the outer circumferential surface of the extension rod 15 is fixedly connected to a pushing frame 16.

[0034] Depend on Figure 3-Figure 4 It can be seen that after the push pulley 14 rotates two-thirds, the push pulley 14 no longer meshes with the sliding top plate 11, so that the sliding top plate 11 itself is pushed down by the spring of the rebound rod 13, so that the spring of the rebound rod 13 pushes the return pressure frame 12 to drive the sliding top plate 11 to automatically reset, so as to ensure that the device will not be reset for a long time, causing the pressure liquid plate 8 and the column collecting plate 5 to stick to each other and affect the reuse of the device.

[0035] In some embodiments, the firmware tube 2 is a circular tube, the outer circumferential surface of the circular tube is provided with a circular hole that penetrates to the inner wall of the circular tube, the inner surface of the circular hole is rotatably connected to an extension rod 15, the lower end of the circular tube is fixedly connected to a support plate 1, and the end of the circular tube away from the support plate 1 is fixedly connected to a liquid isolation plate 3.

[0036] The internal device is protected by the firmware tube 2 to prevent the components of the device from being damaged due to external collision.

[0037] In some embodiments, the liquid isolation plate 3 is a circular plate, and a fixing tube 2 is fixedly connected to the lower surface of the circular plate, and a liquid storage tube 4 is fixedly connected to the outer surface of the circular plate away from the fixing tube 2. A square hole is provided on the outer surface of the circular plate close to the fixing tube 2, and a sliding top plate 11 is slidably connected to the inner surface of the square hole. Two circular holes are provided on the outer surface of the circular plate close to the fixing tube 2, and a heating column 9 is slidably connected to the inner surface of the circular hole.

[0038] The partition plate 3 is used to separate the storage area of ​​the UV paint and the components.

[0039] In some embodiments, the column collecting plate 5 is a circular plate with a circular hole at the center of the circular plate, a soft nozzle 6 is fixedly connected to the inner surface of the circular hole, and an annular groove is provided on the outer surface of the circular plate close to the bottom plate 1, and the width of the annular groove is consistent with the diameter of the heating column 9.

[0040] The column plate 5 is used to fix the output end, and at the same time, it is ensured that the paint spray port can be rotated according to the user's needs to fill the vacant position of the material with paint.

[0041] In some embodiments, the liquid pressure plate 8 is a circular plate, the outer circumference of the circular plate is slidably connected to the inner wall of the liquid storage tube 4, the outer surface of the circular plate is provided with two circular holes, the inner surface of the circular holes is fixedly connected to the heating column 9, and the outer surface of the circular plate close to the bottom plate 1 is fixedly connected to the sliding top plate 11.

[0042] The paint in the liquid storage tube 4 is pressed into the soft spray pipe 6 by the liquid pressure plate 8 and sprayed out from the soft spray pipe 6.

[0043] In some embodiments, the sliding top plate 11 is a rectangular plate, and the outer surface of the rectangular plate close to the extension rod 15 is provided with teeth, and the teeth are meshed with a push pulley 14. The outer surface of the rectangular plate away from the bottom plate 1 is fixedly connected to a pressure liquid plate 8, the outer surface of the rectangular plate is fixedly connected to an auxiliary lifting frame 10, and the outer surface of the rectangular plate is fixedly connected to a back pressure frame 12.

[0044] The sliding top plate 11 itself is pushed by the teeth of the push pulley 14 to push the pressure liquid pan 8 up.

[0045] In some embodiments, the rebound rod 13 is a circular rod, the outer circumferential surface of the circular rod is slidably connected to the back-pressure frame 12, the lower end of the circular rod is fixedly connected to the bottom plate 1, the upper end of the circular rod is fixedly connected to the liquid isolation plate 3, the outer circumferential surface of the circular rod is slidably connected to a spring, one end of the spring is fixedly connected to the back-pressure frame 12, and the end of the spring away from the back-pressure frame 12 is fixedly connected to the liquid isolation plate 3.

[0046] When the push pulley 14 is no longer engaged with the sliding top plate 11, the rebound rod 13 pushes back the pressure frame 12 with its own spring, so that the pressure frame 12 drives the sliding top plate 11 to slide down, preventing the pressure liquid plate 8 from adhering to the column receiving plate 5 due to paint spraying.

[0047] In some embodiments, the push pulley 14 is a circular disk with a circular hole at the center of the disk. An extension rod 15 is fixedly connected to the inner surface of the circular hole. Two-thirds of the outer circumference of the circular disk is provided with teeth, and the teeth are meshed with the sliding top plate 11.

[0048] The teeth of the push pulley 14 push the sliding top plate 11 to rise during its rotation. After the push pulley 14 rotates two-thirds, its own teeth no longer restrict the sliding top plate 11, so that the sliding top plate 11 is pulled back and reset by the rebound rod 13.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0050] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spraying device, comprising a supporting plate (1), characterized in that: The upper surface of the bottom support plate (1) is fixedly connected with a fixing tube (2), one end of the fixing tube (2) away from the bottom support plate (1) is fixedly connected with a liquid isolating plate (3), the outer surface of the liquid isolating plate (3) away from the fixing tube (2) is fixedly connected with a liquid storage tube (4), the outer surface of the liquid storage tube (4) away from the liquid isolating plate (3) is rotatably connected with a column collecting plate (5), the inner surface of the column collecting plate (5) is fixedly connected with a soft spray pipe (6), the outer surface of the column collecting plate (5) close to the bottom support plate (1) is fixedly connected with an auxiliary rotating ring (7), the inner surface of the auxiliary rotating ring (7) is rotatably connected with the liquid storage tube (4), the inner surface of the liquid storage tube (4) is slidably connected with a liquid pressure plate (8), the inner surface of the liquid pressure plate (8) is fixedly connected with a heating column (9), the outer circumferential surface of the heating column (9) is slidably connected with the liquid isolating plate (3), and the outer circumferential surface of the heating column (9) is fixedly connected with an auxiliary lifting frame. (10), a sliding top plate (11) is fixedly connected to the outer surface of the auxiliary lifting frame (10), a liquid pressure plate (8) is fixedly connected to the outer surface of the sliding top plate (11) away from the bottom support plate (1), a liquid isolation plate (3) is slidably connected to the outer surface of the sliding top plate (11), a return pressure frame (12) is fixedly connected to the outer surface of the return pressure frame (12), a rebound rod (13) is slidably connected to the inner surface of the return pressure frame (12), the lower end of the rebound rod (13) is fixedly connected to the bottom support plate (1), and the end of the rebound rod (13) away from the bottom support plate (1) is fixedly connected to the liquid isolation plate (3), the teeth of the sliding top plate (11) are meshed with a push pulley (14), the inner surface of the push pulley (14) is fixedly connected to an extension rod (15), the outer circumferential surface of the extension rod (15) is rotatably connected to a fixing tube (2), and the outer circumferential surface of the extension rod (15) is fixedly connected to a push frame (16).

2. A spraying device according to claim 1, characterized in that: The hardware tube (2) is a circular tube, the outer circumferential surface of the circular tube is provided with a circular hole penetrating to the inner wall of the circular tube, the inner surface of the circular hole is rotatably connected to an extension rod (15), the lower end of the circular tube is fixedly connected to a supporting plate (1), and the end of the circular tube away from the supporting plate (1) is fixedly connected to a liquid isolation plate (3).

3. A spraying device according to claim 1, characterized in that: The liquid isolating plate (3) is a circular plate, the lower surface of the circular plate is fixedly connected to a fixing tube (2), the outer surface of the circular plate away from the fixing tube (2) is fixedly connected to a liquid storage tube (4), the outer surface of the circular plate close to the fixing tube (2) is provided with a square hole, the inner surface of the square hole is slidably connected to a sliding top plate (11), the outer surface of the circular plate close to the fixing tube (2) is provided with two circular holes, the inner surfaces of the circular holes are slidably connected to a heating column (9).

4. A spraying device according to claim 1, characterized in that: The column collecting plate (5) is a circular plate, a circular hole is provided at the center of the circular plate, a soft nozzle (6) is fixedly connected to the inner surface of the circular hole, and an annular groove is provided on the outer surface of the circular plate close to the bottom support plate (1), and the width of the annular groove is consistent with the diameter of the heating column (9).

5. A spraying device according to claim 1, characterized in that: The liquid pressure plate (8) is a circular plate, the outer circumferential surface of which is slidably connected to the inner wall of the liquid storage tube (4), the outer surface of the circular plate is provided with two circular holes, the inner surfaces of the circular holes are fixedly connected to the heating columns (9), and the outer surface of the circular plate close to the bottom support plate (1) is fixedly connected to the sliding top plate (11).

6. A spraying device according to claim 1, characterized in that: The sliding top plate (11) is a rectangular plate, and the outer surface of the rectangular plate close to the extension rod (15) is provided with teeth, and the teeth are meshed with a push pulley (14), the outer surface of the rectangular plate away from the supporting bottom plate (1) is fixedly connected to a pressure plate (8), the outer surface of the rectangular plate is fixedly connected to an auxiliary lifting frame (10), and the outer surface of the rectangular plate is fixedly connected to a back pressure frame (12).

7. A spraying device according to claim 1, characterized in that: The rebound rod (13) is a circular rod, the outer circumferential surface of the circular rod is slidably connected to a back pressure frame (12), the lower end of the circular rod is fixedly connected to a supporting plate (1), the upper end of the circular rod is fixedly connected to a liquid isolation plate (3), the outer circumferential surface of the circular rod is slidably connected to a spring, one end of the spring is fixedly connected to the back pressure frame (12), and the end of the spring away from the back pressure frame (12) is fixedly connected to the liquid isolation plate (3).

8. A spraying device according to claim 1, characterized in that: The push pulley (14) is a circular disk, a circular hole is provided at the center of the circular disk, an extension rod (15) is fixedly connected to the inner surface of the circular hole, and teeth are provided on two-thirds of the outer circumference of the circular disk, and the teeth are meshed with the sliding top plate (11).

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