CN214637459U - Metering control device for spraying - Google Patents

Abstract

The utility model provides a metering control device is used in spraying, epitheca top opening part is equipped with the top cap, and the top cap rotates with the epitheca to be connected, epitheca bottom fixedly connected with inferior valve, the support frame is installed to inferior valve bottom symmetry, inferior valve both sides are the first discharge tube of fixedly connected with and second discharge tube respectively, the inside fixed mounting of epitheca has the filter, and epitheca one side is located filter bottom fixed mounting and has first control mechanism, this metering control device is used in spraying, under first control mechanism and second control mechanism's cooperation, spraying raw materials discharge velocity has been realized, the effective control of discharge, the real time monitoring to the spraying raw materials use has been realized under the effect of liquid sensing device, cooperation through slewing mechanism and spraying mouth, the efficient spraying has been realized carrying out to different objects.

Description

Metering control device for spraying

Technical Field

The utility model relates to a second spraying technical field especially relates to a metering control device for spraying.

Background

In ancient times of China, people can dye clothes and porcelain by using natural dyes for a long time. The spraying tool used at that time can be said to be a writing brush or a manual. With the development of industrial technology, the market demand cannot be met by simple manual operation, the spraying is developed from manual operation to industrial automation, and the automation degree is higher and higher, so that the application of a spraying production line is wider and wider, and the spraying production line is deep into multiple fields of national economy. After the innovation of China is opened, spraying equipment is greatly developed.

The spraying device can not control the discharging speed and the spraying amount well in real life, and is not beneficial to pertinence spraying, so that the waste of spraying raw materials is caused.

Therefore, it is necessary to provide a new control device for spraying to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a can effective control spraying raw materials ejection of compact speed and select the spraying of different spraying mouths with metering control device to different objects.

The utility model provides a pair of control device for spraying includes: the liquid spraying device comprises a top cover, an upper shell, a lower shell, a support frame, a first control mechanism, a liquid sensing device, a second control mechanism, a second rotary disc, a first spraying device, a second spraying device, a rotating mechanism, a filter plate, a first discharge pipe and a second discharge pipe, wherein the top cover is arranged at an opening at the top of the upper shell and is rotationally connected with the upper shell, the lower shell is fixedly connected with the bottom of the upper shell, the support frame is symmetrically arranged at the bottom of the lower shell, the first discharge pipe and the second discharge pipe are respectively and fixedly connected with the two sides of the lower shell, the filter plate is fixedly arranged in the upper shell, the first control mechanism is fixedly arranged at the bottom of the filter plate at one side of the upper shell, the liquid sensing device is fixedly arranged at one end, close to the upper shell, in the lower shell, the second control mechanism is fixedly arranged at one side, far away from the liquid sensing device, and is in sliding contact with the second discharge pipe, the one end fixedly connected with first spraying device of inferior valve is kept away from to first discharge tube, the one end fixedly connected with second spraying device of inferior valve is kept away from to the second discharge tube, and inferior valve 4 is through first discharge tube intercommunication, and the inferior valve passes through second discharge tube and second spraying device intercommunication, slewing mechanism is installed in the rotation of second spraying device top.

Preferably, the sliding contact of epitheca bottom and inferior valve open-top junction has first baffle, the epitheca bottom be provided with a plurality of delivery ports corresponding with first baffle, first baffle top is fixed with the fixed block, and fixed block and first control mechanism fixed connection, inferior valve and second discharge pipe junction sliding connection have the second baffle, and second baffle and second control mechanism bottom fixed connection.

Preferably, first control mechanism includes first carousel, driving gear, first tensile shell, driven gear, threaded rod and threaded sleeve, first tensile shell is fixed in the epitheca bottom, and the inside fixed mounting of first tensile shell has driving gear, driven gear and threaded sleeve, the driving gear is connected with the driven gear meshing, the one end of the first carousel of driving gear axle center fixedly connected with is located, and the other end of first carousel is worn out the epitheca and is rotated with the epitheca through the pivot and be connected, follow fixed cup joint on the telescopic surface of screw thread in gear axle center department, threaded sleeve one end is rotated with the epitheca through the pivot and is connected, and the meshing of the screw thread sleeve other end is connected with the threaded rod, the threaded rod is kept away from the telescopic one end of screw thread and is worn out first tensile shell through with fixed block fixed connection.

Preferably, the second control mechanism includes the tensile shell of second carousel, second, first branch, second branch, slider and spout, the tensile shell of second and inferior valve inner wall fixed connection, and the tensile shell inside fixed mounting of second has first branch, first branch top rotates the one end that is connected with the second carousel through the pivot, and the second carousel other end wears out the inferior valve and rotates with the inferior valve through the pivot and be connected, first branch bottom rotates through the pivot and is connected with second branch, and second branch and second baffle fixed connection, second branch both sides are fixed with the slider, the spout is fixed at inferior valve inner wall, slider and second baffle all with spout sliding connection.

Preferably, the support frame is connected with a roller, and the connecting position of the roller is adjustable, so that the roller can be away from the ground by a set distance or can be in contact with the ground.

Preferably, the second spraying device includes spraying, hose, slewing mechanism, shelters from cover, first spraying mouth, second spraying mouth and third spraying mouth, the fixed intercommunication of one end of inferior valve is kept away from with the second discharge pipe to spraying case one side, and spraying roof portion fixedly connected with hose, the one end fixedly connected with slewing mechanism of spraying case is kept away from to the hose, and slewing mechanism top fixed mounting has first spraying mouth, second spraying mouth and third spraying mouth, first spraying mouth, second spraying mouth and third spraying mouth opening part diameter reduce in proper order, and second spraying mouth top equidistance has seted up the orifice, the fixed cover that has connect in slewing mechanism top has sheltered from the cover.

Preferably, slewing mechanism is including rotating base, turning block, draw-in groove, fixture block and reset spring, the one end fixed connection that the spraying case was kept away from to rotating base bottom and hose, and the inside rotation of rotating base is connected with the turning block, the equal fixed mounting in turning block both sides has reset spring, and reset spring top fixedly connected with fixture block, the draw-in groove has been seted up with the corresponding rigidity of fixture block to the rotating base, the fixed cover that has connect of one end that the hose was kept away from to the rotating base has the shelter from the cover, the turning block is close to the first spraying mouth of one end fixedly connected with, second spraying mouth and the third spraying mouth of shelter from the cover.

Preferably, the upper shell, the lower shell, the first discharge pipe and the second discharge pipe are all made of aluminum alloy materials.

Compared with the prior art, the utility model provides a pair of metering control device for spraying has following beneficial effect:

the utility model provides a metering control device is used in spraying:

the working principle is as follows: when the device is used, the spraying raw material is sent into the epitheca from the epitheca opening part, after the filter fully filters, manually rotate first carousel, it is rotatory to make the driving gear rotate drive driven gear and threaded sleeve, when the threaded rod is shrink under the meshing effect, because the fixed connection of threaded rod and fixed block, thereby it slides along the direction of threaded rod shrink to drive first baffle, thereby can open the delivery port of different quantity, from the epitheca to the epitheca carry the spraying raw material of setting for flow, when first baffle removed first tensile shell bottom, epitheca and inferior valve were the complete intercommunication state this moment, wherein the content of the inside spraying raw material of inferior valve can be fed back to liquid sensing device, use first spraying device to carry out the spraying with the spraying raw material in the inferior valve.

In addition, the second turntable can be manually rotated through the passing, the second turntable rotates to drive the rotating shaft to rotate, so that the first supporting rod is driven to do pendulum motion, the second supporting rod stretches the second partition plate to rise along with the transmission of the connecting rod, the lower shell is communicated with the second discharge pipe, the rotating mechanism is rotated according to the size of an object to be sprayed, and a suitable spraying opening is selected for efficient spraying of the object.

This control device for spraying, under first control mechanism and second control mechanism's cooperation, can use first spraying device and second spraying device to carry out different intensity spraying, and can realize the effective control to spraying raw materials discharge speed, load according to liquid sensing device's feedback control spraying measurement.

Drawings

Fig. 1 is a schematic view of the overall structure provided by the present invention;

fig. 2 is a schematic diagram of the internal structure provided by the present invention;

fig. 3 is a schematic connection diagram of a first control mechanism provided by the present invention;

fig. 4 is a schematic structural diagram of a second control mechanism provided by the present invention;

fig. 5 is a schematic view of the connection between the rotating block and the rotating base provided by the present invention;

fig. 6 is a schematic view of the connection between the turning block and the spraying opening provided by the present invention.

Reference numbers in the figures: 1. a top cover; 2. an upper shell; 3. a first control mechanism; 31. a first turntable; 32. a driving gear; 33. a first tensile outer shell; 34. a driven gear; 35. a threaded rod; 36. a threaded sleeve; 4. a lower case; 5. a liquid sensing device; 6. a support frame; 61. a roller; 7. a second control mechanism; 71. a second turntable; 72. a second stretch shell; 73. a first support bar; 74. a second support bar; 75. a slider; 76. a chute; 8. a first spray coating device; 9. a second spraying device; 91. a spraying box; 92. a hose; 93. a rotating mechanism; 931. rotating the base; 932. rotating the block; 933. a card slot; 934. a clamping block; 935. a return spring; 94. a shield cover; 95. a first spray opening; 96. a second spraying port; 97. a third spraying port; 10. a first separator; 101. a fixed block; 11. a filter plate; 12. a second separator; 13. a first discharge pipe; 14. a delivery orifice; 15. a second discharge pipe.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6 in combination, wherein fig. 1 is a schematic diagram of an overall structure provided by the present invention; fig. 2 is a schematic diagram of the internal structure provided by the present invention; fig. 3 is a schematic connection diagram of a first control mechanism provided by the present invention; fig. 4 is a schematic structural diagram of a second control mechanism provided by the present invention; fig. 5 is a schematic view of the connection between the rotating block and the rotating base provided by the present invention; fig. 6 is a schematic view of the connection between the turning block and the spraying opening provided by the present invention.

The utility model provides a metering control device for spraying, it includes top cap 1, epitheca 2, inferior valve 4, support frame 6, first control mechanism 3, liquid sensing device 5, second control mechanism 7, second carousel 71, first spraying device 8, second spraying device 9, slewing mechanism 93, filter 11, first discharge tube 13 and second discharge tube 15.

The top opening of the upper shell 2 is provided with a top cover 1, the top cover 1 is rotatably connected with the upper shell 2, the bottom of the upper shell 2 is fixedly connected with a lower shell 4, the bottom of the lower shell 4 is symmetrically provided with a support frame 6, two sides of the lower shell 4 are respectively fixedly connected with a first discharge pipe 13 and a second discharge pipe 15, the interior of the upper shell 2 is fixedly provided with a filter plate 11, one side of the upper shell 2 is positioned at the bottom of the filter plate 11 and is fixedly provided with a first control mechanism 3, one end of the interior of the lower shell 4 close to the upper shell 2 is fixedly provided with a liquid sensing device 5, one side of the lower shell 4 far away from the liquid sensing device 5 is fixedly provided with a second control mechanism 7, the second control mechanism 7 is in sliding contact with the second discharge pipe 15, one end of the first discharge pipe 13 far away from the lower shell 4 is fixedly connected with a first spraying device 8, one end of the second discharge pipe 15 far away from the lower shell 4 is fixedly connected with a second spraying device 9, the lower shell 4 is communicated with the second spraying device 9 through a first discharge pipe 13, the lower shell 4 is communicated with the second spraying device 9 through a second discharge pipe 15, and a rotating mechanism 93 is rotatably installed at the top of the second spraying device 9.

Under the cooperation of the first control mechanism 3, the second control mechanism 7 and the first spraying device 8, the spraying raw materials are effectively controlled, the discharging speed of the spraying raw materials is controlled, the spraying raw materials can also pass through the process, and the liquid sensing device 5 is the prior art and has the same working principle as a liquid sensor in real life.

Referring to fig. 2, a first partition plate 10 is in sliding contact with the top opening joint of the upper shell 2 bottom and the lower shell 4, a plurality of conveying holes 14 corresponding to the first partition plate 10 are formed in the bottom of the upper shell 2, a fixing block 101 is fixed to the top of the first partition plate 10, the fixing block 10 is fixedly connected with the first control mechanism 3, a second partition plate 12 is in sliding connection with the joint of the lower shell 4 and the second discharge pipe 15, the second partition plate 12 is fixedly connected with the bottom of the second control mechanism 7, the first partition plate 10 is connected with the upper shell 2 and the lower shell 4, the second partition plate 12 is connected with the lower shell 4 and the second discharge pipe 15, and timely blocking and discharging of spraying raw materials are achieved.

Referring to fig. 2 and 3, the first control mechanism 3 includes a first rotary table 31, a driving gear 32, a first stretching casing 33, a driven gear 34, a threaded rod 35 and a threaded sleeve 36, the first stretching casing 33 is fixed at the bottom of the upper casing 2, the driving gear 32, the driven gear 34 and the threaded sleeve 36 are fixedly installed inside the first stretching casing 33, the driving gear 32 is engaged with the driven gear 34, the axis of the driving gear 32 is fixedly connected with one end of the first rotary table 31, the other end of the first rotary table 31 penetrates through the upper casing 2 and is rotationally connected with the upper casing 2 through a rotating shaft, the axis of the driven gear 34 is fixedly sleeved on the surface of the threaded sleeve 36, one end of the threaded sleeve 36 is rotationally connected with the upper casing 2 through a rotating shaft, the other end of the threaded sleeve 36 is engaged with the threaded rod 35, one end of the threaded rod 35 far away from the threaded sleeve 36 penetrates through the first stretching casing 33 and is fixedly connected with the fixed block 101, first carousel 31 of manual rotation, order about driving gear 32 and rotate, thereby driven gear 34 also follows the rotation, the meshing that drives threaded sleeve 36 and threaded rod 35 is connected, when threaded rod 35 contracts under the meshing effect, because threaded rod 35 and fixed block 101's fixed connection, thereby drive first baffle 10 and remove along the direction that threaded rod 35 contracts, and first tensile shell 33 bottom is equipped with the gliding holding tank of confession first baffle 10, when first baffle 10 removed first tensile shell 33 bottom, epitheca 2 and inferior valve 4 are the connected state this moment.

Referring to fig. 2 and 4, the second control mechanism 7 includes a second rotary disk 71, a second stretching casing 72, a first supporting rod 73, a second supporting rod 74, a sliding block 75 and a sliding groove 76, the second stretching casing 72 is fixedly connected with the inner wall of the lower casing 4, the first supporting rod 73 is fixedly mounted inside the second stretching casing 72, the top of the first supporting rod 73 is rotatably connected with one end of the second rotary disk 71 through a rotating shaft, the other end of the second rotary disk 71 penetrates out of the lower casing 4 and is rotatably connected with the lower casing 4 through a rotating shaft, the bottom of the first supporting rod 73 is rotatably connected with the second supporting rod 74 through a rotating shaft, the bottom of the second supporting rod 74 is fixedly connected with the second partition plate 12, sliding blocks 75 are fixed on two sides of the second supporting rod 74, the sliding groove 76 is fixed on the inner wall of the lower casing 4, the sliding blocks 75 and the second partition plate 12 are both slidably connected with the sliding groove 76, the second rotary disk 71 is rotated to drive the rotating shaft to rotate, thereby drive first branch 73 and make pendulum motion, follow the connecting rod transmission, second branch 74 stretches second baffle 12 and rises to make inferior valve 4 and second discharge pipe 15 intercommunication, on the contrary second baffle 12 then plays the effect of separation, and the elevating movement of second branch 74 and second baffle 12 has all been gone on in spout 76, and spout 76 has played spacing effect.

Referring to fig. 1, a roller 61 may be connected to the support frame 6, and the connection position of the roller 61 may be adjusted so that the roller 61 may be spaced apart from or in contact with the ground.

Referring to fig. 2 and 6, the second spraying device 9 includes a spraying box 91, a hose 92, a rotating mechanism 93, a shielding cover 94, a first spraying port 95, a second spraying port 96 and a third spraying port 97, the spraying box 91 is a spraying pump body for providing spraying power, one side of the spraying box 91 is fixedly communicated with one end of the second discharge pipe 15 far away from the lower shell 4, the hose 92 is fixedly connected to the top of the spraying box 91, the rotating mechanism 93 is fixedly connected to one end of the hose 92 far away from the spraying box 91, the first spraying port 95, the second spraying port 96 and the third spraying port 97 are fixedly installed on the top of the rotating mechanism 93, the diameters of the openings of the first spraying port 95, the second spraying port 96 and the third spraying port 97 are sequentially reduced, spray holes are equidistantly formed in the top of the second spraying port 96, the shielding cover 94 is fixedly connected to the top of the rotating mechanism 93, spraying raw materials enter the spraying box 91 from the second discharge pipe 15, the spraying box 91 and the spraying port are both in the prior art and have the same working principle as the paint box and the paint sprayer in real life.

The spraying principle of the first spraying device 8 is similar to that of the second spraying device 9, and the main difference is that no flow control mechanism similar to the second control mechanism 7 is adopted for the first spraying device 8, and the first spraying device 8 is not described in detail here.

Referring to fig. 5, the rotating mechanism 93 includes a rotating base 931, a rotating block 932, a clamping groove 933, a clamping block 934 and a return spring 935, the bottom of the rotating base 931 is fixedly connected to one end of the hose 92 far away from the spraying box 91, the rotating block 932 is rotatably connected to the inside of the rotating base 931, the return spring 935 is fixedly installed on both sides of the rotating block 932, the clamping block 934 is fixedly connected to the top of the return spring 935, the clamping groove 933 is fixedly formed in the corresponding position of the rotating base 931 and the clamping block 934, the shielding cover 94 is fixedly connected to one end of the rotating base 931 far away from the hose 92, the first spraying port 95, the second spraying port 96 and the third spraying port 97 are fixedly connected to one end of the rotating block 932 close to the shielding cover 94, according to the size of the object to be sprayed, when the spraying port is changed, the rotating block 932 can be rotated, at this time, the clamping block 934 and the clamping groove 933 can be separated under the action of external force, reset spring 935 can compress this moment, and when going to next fixture block 934, fixture block 934 can continue to get into draw-in groove 933, and each spraying mouth all corresponds there is fixture block 934.

Referring to fig. 1, the upper casing 2, the lower casing 4, the first discharge pipe 13 and the second discharge pipe 15 are made of aluminum alloy, and the aluminum alloy has high corrosion resistance.

The working principle is as follows: when the device is used, spraying raw materials are sent into the upper shell 2 from the opening of the upper shell 2, after being fully filtered by the filter plate 11, the first rotating disc 31 is manually rotated, the driving gear 32 is enabled to rotate to drive the driven gear 34 and the threaded sleeve 36 to rotate, when the threaded rod 35 contracts under the meshing action, due to the fixed connection of the threaded rod 35 and the fixed block 101, the first partition plate 10 is driven to slide along the contraction direction of the threaded rod 35, the conveying holes 14 with different quantities can be opened, the spraying raw materials with set flow are conveyed to the lower shell 4 from the upper shell 2, when the first partition plate 10 moves to the bottom of the first stretching shell 33, the upper shell 2 and the lower shell 4 are in a complete communication state at the moment, the content of the spraying raw materials inside the lower shell 4 can be fed back by the liquid sensing device 5, and the spraying raw materials in the lower shell 4 can be sprayed by the first spraying device 8.

In addition, the second turntable 71 can be manually rotated, the second turntable 71 rotates to drive the rotating shaft to rotate, so that the first supporting rod 73 is driven to perform pendulum motion, the second supporting rod 74 stretches the second partition plate 12 to ascend along with the transmission of the connecting rod, the lower shell 4 is communicated with the second discharge pipe 15, and the rotating mechanism 93 is rotated according to the size of an object to be sprayed, so that a suitable spraying opening is selected for efficiently spraying the object.

This control device for spraying can use first spraying device 8 and second spraying device 9 to carry out different intensity spraying under the cooperation of first control mechanism 3 and second control mechanism 7, and can realize the effective control to spraying raw materials discharge speed, load according to the feedback control spraying measurement of liquid sensing device 5.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (8)

1. A metering control device for spray coating, comprising: the device comprises a top cover (1), an upper shell (2), a lower shell (4), a support frame (6), a first control mechanism (3), a liquid sensing device (5), a second control mechanism (7), a second rotary table (71), a first spraying device (8), a second spraying device (9), a rotating mechanism (93), a filter plate (11), a first discharge pipe (13) and a second discharge pipe (15), wherein the top opening of the upper shell (2) is provided with the top cover (1), the top cover (1) is rotationally connected with the upper shell (2), the bottom of the upper shell (2) is fixedly connected with the lower shell (4), the support frame (6) is symmetrically arranged at the bottom of the lower shell (4), the two sides of the lower shell (4) are respectively and fixedly connected with the first discharge pipe (13) and the second discharge pipe (15), the filter plate (11) is fixedly arranged in the upper shell (2), and the first control mechanism (3) is fixedly arranged at the bottom of the filter plate (11) at one side of the upper shell (2), inferior valve (4) inside one end fixed mounting that is close to epitheca (2) has liquid sensing device (5), one side fixed mounting that liquid sensing device (5) were kept away from in inferior valve (4) has second control mechanism (7), and second control mechanism (7) and second discharge pipe (15) sliding contact, the first spraying device (8) of one end fixedly connected with of inferior valve (4) are kept away from in first discharge pipe (13), the one end fixedly connected with second spraying device (9) of inferior valve (4) are kept away from in second discharge pipe (15), and inferior valve (4) are through first discharge pipe (13) intercommunication, and inferior valve (4) are through second discharge pipe (15) and second spraying device (9) intercommunication, slewing mechanism (93) are installed in second spraying device (9) top rotation.

2. The metering control device for spraying as claimed in claim 1, wherein a first partition plate (10) is in sliding contact with the joint of the bottom of the upper shell (2) and the top opening of the lower shell (4), a plurality of conveying holes (14) corresponding to the first partition plate (10) are formed in the bottom of the upper shell (2), a fixed block (101) is fixed to the top of the first partition plate (10), the fixed block (101) is fixedly connected with the first control mechanism (3), a second partition plate (12) is in sliding connection with the joint of the lower shell (4) and the second discharge pipe (15), and the second partition plate (12) is fixedly connected with the bottom of the second control mechanism (7).

3. The metering control device for spraying according to claim 1, wherein the first control mechanism (3) comprises a first rotary disc (31), a driving gear (32), a first stretching outer shell (33), a driven gear (34), a threaded rod (35) and a threaded sleeve (36), the first stretching outer shell (33) is fixed at the bottom of the upper shell (2), the driving gear (32), the driven gear (34) and the threaded sleeve (36) are fixedly installed inside the first stretching outer shell (33), the driving gear (32) is meshed with the driven gear (34), one end of the first rotary disc (31) is fixedly connected to the axis of the driving gear (32), the other end of the first rotary disc (31) penetrates through the upper shell (2) and is rotatably connected with the upper shell (2) through a rotating shaft, the axis of the driven gear (34) is fixedly sleeved on the surface of the threaded sleeve (36), threaded sleeve (36) one end is rotated through pivot and epitheca (2) and is connected, and threaded sleeve (36) other end meshing is connected with threaded rod (35), threaded rod (35) are kept away from the one end of threaded sleeve (36) and are worn out first tensile shell (33) through with fixed block (101) fixed connection.

4. The metering control device for spraying according to claim 1, wherein the second control mechanism (7) comprises a second rotary disc (71), a second stretching shell (72), a first support rod (73), a second support rod (74), a sliding block (75) and a sliding groove (76), the second stretching shell (72) is fixedly connected with the inner wall of the lower shell (4), the first support rod (73) is fixedly installed inside the second stretching shell (72), the top of the first support rod (73) is rotatably connected with one end of the second rotary disc (71) through a rotating shaft, the other end of the second rotary disc (71) penetrates through the lower shell (4) and is rotatably connected with the lower shell (4) through a rotating shaft, the bottom of the first support rod (73) is rotatably connected with the second support rod (74) through a rotating shaft, the second support rod (74) is fixedly connected with the second partition plate (12), the sliding block (75) is fixed on two sides of the second support rod (74), the sliding groove (76) is fixed on the inner wall of the lower shell (4), and the sliding block (75) and the second partition plate (12) are both in sliding connection with the sliding groove (76).

5. A metering control device for spraying according to claim 1, characterized in that a roller (61) is connected to the support frame (6), the connection position of the roller (61) being adjustable so that the roller (61) can be set at a distance or in contact with the ground.

6. The metering control device for spraying as claimed in claim 1, characterized in that the second spraying device (9) comprises a spraying box (91), a hose (92), a rotating mechanism (93), a shielding cover (94), a first spraying port (95), a second spraying port (96) and a third spraying port (97), one side of the spraying box (91) is fixedly communicated with one end of the second discharge pipe (15) far away from the lower shell (4), the hose (92) is fixedly connected to the top of the spraying box (91), the rotating mechanism (93) is fixedly connected to one end of the hose (92) far away from the spraying box (91), the first spraying port (95), the second spraying port (96) and the third spraying port (97) are fixedly installed to the top of the rotating mechanism (93), and the diameters of the openings of the first spraying port (95), the second spraying port (96) and the third spraying port (97) are sequentially reduced, and the top of the second spraying opening (96) is equidistantly provided with spraying holes, and the top of the rotating mechanism (93) is fixedly sleeved with a shielding cover (94).

7. The metering control device for spraying as claimed in claim 6, wherein the rotating mechanism (93) comprises a rotating base (931), a rotating block (932), a clamping groove (933), a clamping block (934) and a return spring (935), one end of the bottom of the rotating base (931) and the hose (92) are fixedly connected with one end of the spraying box (91), the rotating base (931) is connected with the rotating block (932) in an internal rotating manner, the return spring (935) is fixedly mounted on two sides of the rotating block (932), the clamping block (934) is fixedly connected with the top of the return spring (935), the clamping groove (933) is fixedly arranged on the corresponding position of the rotating base (931) and the clamping block (934), a shielding cover (94) is fixedly connected to one end of the rotating base (931) far away from the hose (92), and the first spraying port (95) and the first spraying port (932) are fixedly connected with one end of the rotating block (932) close to the shielding cover (94), A second spray opening (96) and a third spray opening (97).

8. The metering control device for spraying as claimed in claim 1, characterized in that the upper casing (2), the lower casing (4), the first discharge pipe (13) and the second discharge pipe (15) are made of aluminum alloy.

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