CN115889061A - Spherical product surface spraying device - Google Patents

Abstract

The invention relates to the technical field of chemical equipment, in particular to a spherical product surface spraying device which comprises a spraying assembly, wherein an air nozzle for blowing and suspending a spherical product through cooling gas and a nozzle for spraying an anti-caking agent on the surface of the product are arranged in the spraying assembly; a material returning component for taking away the sprayed spherical products and a material supplying component for supplying new spherical products to the spraying position are arranged beside the spraying component; the invention uses the air nozzle to blow and float the spherical fertilizer product in the air, and simultaneously sprays the anti-caking agent on the surface of the product, and the air sprayed by the air nozzle can quickly dry the anti-caking agent on the surface of the product, thereby ensuring that a complete and undamaged anti-caking agent layer is formed on the surface of the product in the non-contact spraying process, and further prolonging the storage life of the product.

Description

Spherical product surface spraying device

Technical Field

The invention relates to the technical field of chemical equipment, in particular to a spherical product surface spraying device.

Background

During fertilizer production, before packaging formed fertilizer granules, a layer of anti-caking agent is usually required to be attached and coated on the surfaces of finished fertilizer granules, so that the fertilizer granules are prevented from caking in the processes of storage and transportation. In order to uniformly coat the anti-caking agent on the surface of the fertilizer granules, the anti-caking agent is usually sprayed on the surface of the fertilizer granules by using a sprayer, and the fertilizer granules are packaged after the anti-caking agent is dried.

The conventional fertilizer granule spraying method is to cool the fertilizer granules after the fertilizer granules are formed; and then pouring the cooled fertilizer particles into a packaging cellar, and spraying the surfaces of the fertilizer particles in the packaging cellar by using a sprayer. However, in the actual operation process, because the temperatures of the cooled fertilizer particles are different, the temperature difference exists among the fertilizer particles, so that in the spraying process, the anti-caking agent on the surfaces of the fertilizer particles with lower temperature is completely dried; the anti-caking agent sprayed on the surfaces of the fertilizer particles with higher temperature is in a slightly molten state, and the fertilizer particles in the molten state are easy to adhere to each other, so that the fertilizer in the packaging bag is agglomerated, and the storage and the use of the fertilizer are influenced. In order to solve the above technical problems, chinese utility model CN217585034U discloses a composite fertilizer coating kiln particle cooling device, and specifically discloses the following technical features: "the apparatus comprises a cooling assembly mounted in the working chamber of the wrap-around kiln; the cooling assembly and the wrapping kiln run independently of each other, and the cooling assembly receives the particles falling freely in the working cavity of the wrapping kiln and cools the particles through heat conduction. ". The fertilizer particles are cooled through the cooling assembly, so that the anti-caking agent on the surfaces of the fertilizer particles is completely dried, and the phenomenon of adhesion is avoided. The prior art effectively solves the problem that fertilizer granules are bonded because the anti-caking agent is not dried, so the prior art is widely popularized and applied.

In the production process of a conventional fertilizer, the particle size of fertilizer particles is usually less than 1 cm, and the fertilizer with small particle size can be quickly dissolved in the use process, so that active ingredients in the fertilizer can be quickly absorbed by crops. Because the small-particle fertilizer can be quickly dissolved, in order to avoid the loss of redundant active ingredients which can not be timely absorbed by crops in the soil environment, a timing and quantitative fertilization mode is adopted, so that the waste of the active ingredients can be avoided, and the requirement of the fertilizing amount of the crops can be met. The growth requirement of crops can be met by adopting a timing and quantitative fertilization mode, but the manpower input can be increased by too many fertilization times; therefore, in order to reduce the number of fertilization, people begin to produce fertilizer with large grain size larger than 1 cm. The fertilizer with large grain diameter can be placed at the root of the crop for a long time, and is slowly dissolved and released to continuously supply fertilizer for the crop. Chinese patents CN104193525A, CN102766002B, CN104341237A and CN101709018B disclose fertilizers with large particle size and manufacturing methods thereof, wherein the particle size of some fertilizers reaches 5-12 cm; the fertilizer with large grain diameter is placed at the root of the crop to be slowly dissolved, so that the fertilizing frequency can be reduced, and the fertilizing amount requirement of the crop can be met.

The cooling method in the prior art is suitable for fertilizer particles with the particle size of less than 1 cm, and the fertilizer particles with the particle size are light in weight, so that the fertilizer particles cannot be broken due to collision due to small inertia when the fertilizer particles roll in the wrapping cellar. However, when the fertilizer particles with large particle size, such as fertilizer particles with a diameter of more than 5 cm, are faced, the fertilizer particles are easy to be damaged due to collision in the process of repeatedly rolling in the wrapping cellar because of large mass. And the fertilizer particles with large particle size need more spraying time and cooling time, when the anti-sticking agent is sprayed on the surface of the fertilizer particles and is not completely dried, the fertilizer particles with larger mass roll, so that one indentation is rolled on the surface, the integrity of the anti-caking agent coating is damaged, water vapor enters the interior of the fertilizer particles from the indentation in the later storage process, the efficacy and the storage time of the fertilizer are influenced, and therefore the problem needs to be solved urgently.

Disclosure of Invention

In order to avoid and overcome the technical problems in the prior art, the invention provides a spherical product surface spraying device. The invention uses the air nozzle to blow and float the spherical fertilizer product in the air, and simultaneously sprays the anti-caking agent on the surface of the product, and the air sprayed by the air nozzle can quickly dry the anti-caking agent on the surface of the product, thereby ensuring that a complete and undamaged anti-caking agent layer is formed on the surface of the product in the non-contact spraying process, and further prolonging the storage life of the product.

In order to achieve the purpose, the invention provides the following technical scheme:

a spherical product surface spraying device comprises a spraying assembly, wherein an air nozzle for blowing, floating and suspending a spherical product through cooling gas and a nozzle for spraying an anti-caking agent on the surface of the product are arranged in the spraying assembly; the side of the spraying component is provided with a material returning component for taking away the spherical products after the spraying is finished and a material supplying component for supplying new spherical products to the spraying position.

As a still further scheme of the invention: the spraying assembly comprises a spraying seat arranged on the base, a concave cavity with an opening at the top end is formed in the spraying seat, a pressure-bearing disc is arranged in the concave cavity in a dynamic sealing manner, a closed air pressure chamber is formed between the pressure-bearing disc and the cavity bottom of the concave cavity, and an air pressure part for enabling the pressure-bearing disc to do reciprocating linear motion along the vertical direction is arranged in the air pressure chamber; the air tap connected with the air pressure chamber and the nozzle connected with the sprayer are both arranged on the pressure bearing disc, the spherical product falls into the concave cavity and is suspended above the air tap, and the spherical product can synchronously move upwards along with the pressure bearing disc.

As a still further scheme of the invention: a guide groove vertically extending in the groove length direction is arranged on the side wall of the concave cavity, and a guide block in sliding fit with the guide groove is arranged on the pressure bearing disc; the pneumatic pressing part comprises a supercharger which pressurizes the pneumatic chamber to push the bearing plate to move upwards and a return spring which can pull the bearing plate to move downwards; the air pressing part also comprises a pressure relief hole which is communicated with the air pressure chamber and the atmospheric environment when the pressure bearing disc moves to a preset position so as to enable the air pressure chamber to relieve pressure instantly, the pressure relief hole is arranged on the cavity wall of the concave cavity, and the preset position is a position where the pressure bearing disc rises when material returning operation and material taking operation are finished.

As a still further scheme of the invention: the limiting plate is arranged at the orifice of the cavity, the air bag capable of radially and centripetally expanding under the upward extrusion action of the pressure-bearing plate is arranged at the bottom of the limiting plate, the air bag is annularly distributed in the cavity, the sprayed spherical product is pressed on the closing-in of the expanded air bag, and the diameter of the closing-in is smaller than that of the spherical product.

As a still further scheme of the invention: the material returning assembly comprises an upright post arranged on the base, a material pushing rod is hinged on the upright post, a supporting seat is arranged at the cantilever end of the material pushing rod, and a cross rod which can only be bent downwards is hinged on the supporting seat through a torsion spring seat; the material returning pry bars which are mutually perpendicular to the cross bar in space are arranged on the material returning driving rod, and the cross bar is positioned on the moving path of the material returning pry bars; the material returning pry bar moves upwards, and the cross bar moves along the length direction of the material returning pry bar so that the cantilever end of the material pushing bar rotates to a spherical product positioned on the closing-in of the air bag and pushes the spherical product down into the collecting box; the material returning pry bar goes down after crossing the cross bar, and the material returning pry bar is pressed at the cantilever end of the cross bar and enables the cross bar to be bent downwards and then cross the cross bar.

As a still further scheme of the invention: the material returning driving rod further comprises a material returning straight rod, an L-shaped material returning curved rod is arranged at the top end of the material returning straight rod, and the material returning pry bar is arranged on the material returning curved rod; the material returning straight rod is inserted in the group of guide grooves in a sliding mode in the vertical direction, and the bottom end of the material returning straight rod is fixedly connected with the guide block.

As a still further scheme of the invention: the feeding assembly comprises a storage box capable of storing single spherical products, and the side surface of the cuboid storage box is provided with a feeding hole and the bottom surface is provided with a discharging hole; the frame at two sides of the feed port is symmetrically provided with feed chutes with the groove length direction extending along the length direction of the frame, and the feed chutes are internally and slidably connected with feed slide bars; discharge chutes extending along the length direction of the frame in the groove length direction are symmetrically formed in the frames on the two sides of the discharge port, discharge slide rods are connected in the discharge chutes in a sliding manner, and material carrying cloth is connected between the discharge slide rods and the feeding slide rods; the driving piece can pull the material loading cloth to move and cover the material inlet or the material outlet so as to enable the material outlet to close the material inlet and open the material outlet or close the material outlet and open the material inlet and the material outlet.

As a still further scheme of the invention: the driving piece comprises support columns arranged on the side face opposite to the feed port, and a traction spring for pulling the discharging slide rod to move along the discharging chute to be far away from the feed port is arranged between the two groups of support columns and two ends of the discharging slide rod; the driving piece also comprises a material taking driving rod for pushing the feeding sliding rod to move from bottom to top along the feeding chute; the frame that feed inlet and discharge gate intersect arranges the pivot of axial and this frame length direction parallel arrangement, and the material carrying cloth is connected each other with feeding slide bar and ejection of compact slide bar around the pivot.

As a still further scheme of the invention: the material taking driving rod comprises a material taking straight rod with a rod length extending along the vertical direction, the material taking straight rod is inserted in a group of guide grooves in a sliding mode along the vertical direction, and the bottom end of the material taking straight rod is fixedly connected with the guide blocks; get and be connected the material curved bar of getting that the slope set up on the material straight-bar, get and arrange the vertical upwards material push rod that extends in U type and both ends on the material curved bar, get the bayonet socket of the both ends joint that can correspond with the feeding slide bar arranged at the both ends of material push rod to it moves from bottom to top to make to get the material push rod to promote the feeding slide bar.

As a still further scheme of the invention: the feeding assembly further comprises a support frame, a material storage box is arranged on the support frame, the bottom of the material storage box is communicated with a feeding pipe, and the discharging end of the feeding pipe is communicated with the feeding hole; a blanking slideway is arranged below the discharge port and is arranged on the material taking curved rod, and the blanking slideway is downwards inclined and extends to the air bag from the discharge port so as to roll the spherical product to the spraying position

Compared with the prior art, the invention has the beneficial effects that:

1. the invention uses the air nozzle to blow and suspend the spherical fertilizer product in the air, and simultaneously sprays the anti-caking agent on the surface of the product, and the air sprayed by the air nozzle can quickly dry the anti-caking agent on the surface of the product and simultaneously keep the product in a suspended state, so the invention is dual-purpose. The suspension state of the spherical product can ensure that a complete and undamaged anti-caking agent layer is formed on the surface of the product in the non-contact spraying process, thereby prolonging the storage life of the product.

2. The tractive spring can be when waiting for getting the material, and pulling ejection of compact slide bar removes to the leftmost end of ejection of compact spout, and then will carry the below that the material cloth pulled out the mouth, avoids being located the globular product drop of material storage box. When materials need to be taken, the material carrying cloth moves to the material inlet under the action of the material taking driving rod and blocks the material taking opening, so that the spherical products in the material inlet pipe are prevented from rolling into the material storage box; meanwhile, the sealing effect of the material loading cloth on the discharge port is removed, so that the spherical product falls down smoothly. The reciprocating motion of the material loading cloth realizes the operation of material blocking and blanking, and the structure is stable and the design is ingenious.

3. The blanking slide way gradually rises and is close to the discharge hole in the material taking process, and keeps a short distance with the discharge hole in the material receiving process, so that the spherical product can be prevented from falling at a high speed, and the spherical product is prevented from being damaged.

4. The gasbag is the inflation that is continuous in the process of compression, on the one hand can compress tightly on the air cock, is the continuous increase of the inside pressure of pneumatic chamber, and then makes the pressure-bearing dish rise constantly, and then accomplishes the material returned and gets the material operation successively. On the other hand, the air bag can provide a temporary placing platform for the sprayed spherical product after being expanded, so that the distance between the spherical product and a material dropping point on a material returning slide way is further reduced, and the spherical product is prevented from being broken; meanwhile, the air bag which is slowly recovered can provide a buffering effect for the falling spherical product, the spherical product is prevented from being broken before spraying, the integrity of the product is improved, and the spraying effect is improved.

5. The spraying process comprises the steps that firstly, a supercharger is started to inflate the interior of an air pressure chamber, and a spherical product is slowly blown up; and then continuously pressurizing until the spherical products are stably suspended in the air, stabilizing the pressure, and spraying the stably suspended spherical products. After the spraying time is reached, stopping spraying, increasing the pressure, lifting the pressure bearing disc at the moment, and synchronously lifting the spherical products; the air bag is compressed and covers the air nozzle, and the material returning assembly and the material supplying assembly start corresponding actions in the process. When a new spherical product falls on the air bag, the air pressure chamber releases pressure, the booster stops working, the pressure bearing disc resets, and then a new round of spraying operation is started.

6. The horizontal pole passes through the cooperation of torsion spring seat and supporting seat, and the horizontal pole can only buckle downwards, and the purpose of doing so is in the in-process that resets in order to make the material returned pinch bar, can not make the ejector pad pole remove to the globular product that falls newly, avoids pushing this globular product into the collecting box, improves the controllability of device. When the material returning pry bars go downwards to cross the position of the cross bar, the cross bar is in a downward pressing state in the offside process, then the cross bar and the material returning pry bars are separated from each other, and the cross bar is reset to perform the next round of work.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the spray assembly of the present invention.

Fig. 3 is a schematic view of a disassembled structure of the spray assembly of the present invention.

FIG. 4 is a schematic view of the interior of the spray assembly of the present invention.

FIG. 5 is a schematic view of the structure of the feeding assembly of the present invention.

FIG. 6 is a schematic view of a disassembled structure of a feeding assembly of the present invention.

FIG. 7 is a schematic view of the storage case according to the present invention.

FIG. 8 is a schematic view of the storage box of the present invention during discharging.

Fig. 9 is a schematic structural view of the material returning assembly of the present invention.

Fig. 10 is a schematic view of a disassembled structure of the material returning assembly of the present invention.

FIG. 11 is a schematic view of the cross bar and the supporting seat of the present invention

In the figure:

10. a spray assembly; 11. a base; 12. a spraying base; 121. a guide groove; 122. a pressure relief vent;

13. a pressure bearing disc; 131. a guide block; 132. an air tap; 133. a nozzle; 134. a return spring;

14. an air bag; 15. a limiting plate; 16. a supercharger;

20. a supply assembly; 21. a material taking driving rod; 211. taking a straight rod; 212. taking a material crank;

213. a material taking push rod; 2131. a bayonet; 22. a blanking slideway; 23. a material storage box;

231. a feed inlet; 232. a discharge port; 233. a feed chute; 234. a discharge chute;

235. a feeding slide bar; 236. a discharging slide bar; 237. carrying cloth; 238. a tension spring;

239. a support pillar; 24. a feed pipe; 25. a material storage box; 26. a support frame;

30. a material returning component; 31. a material returning driving rod; 311. a material returning straight rod; 312. a material returning curved rod;

313. a material returning pry bar; 32. a column; 33. a material pushing rod; 331. a supporting base; 332. a cross bar;

34. a material returning slideway; 35. and a collection box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-11, the present invention generally includes a spray assembly 10, a supply assembly 20, and a return assembly 30.

As shown in fig. 1-4, the spray assembly 10 includes a base 11 for support; the base 11 is provided with a spraying base 12, the spraying base 12 is hollow and cylindrical, and an internal cavity is matched with the base 11 to form a cavity structure with an open top end. Two sets of guide grooves 121 extending in the vertical direction are symmetrically arranged on the side wall of the cavity. And the pressure bearing disc 13 is arranged in the cavity, and the shape of the pressure bearing plate is matched with that of the cavity, so that the pressure bearing disc 13 is in a dynamic sealing state when moving up and down in the cavity, and air leakage is avoided. Two sets of guide blocks 131 in sliding fit with the guide grooves 121 are symmetrically arranged on both sides of the pressure bearing disk 13, and the guide blocks 131 are in dynamic sealing fit with the guide grooves 121. The axis of the pressure bearing disc 13 is provided with a nozzle 133 which can spray the anti-caking agent on the surface of the spherical product, and the nozzle 133 is connected with a sprayer, so that the anti-caking agent can be continuously sprayed on the spherical product. Air nozzles 132 are opened on pressure receiving disk 13 and are uniformly distributed along the axial center of pressure receiving disk 13 outside nozzles 133. And a closed air pressure chamber is formed between the pressure bearing disc 13 and the cavity bottom of the concave cavity, and an air pressure piece is arranged in the air pressure chamber. The pneumatic pressing part comprises a supercharger 16 which pressurizes the pneumatic chamber to push the bearing disc 13 to move upwards and a return spring 134 which can pull the bearing disc to move downwards; the pressure-releasing member further includes a pressure-releasing hole 122 for communicating the pressure chamber with the atmosphere when the pressure-bearing plate 13 moves up to a predetermined position, so that the pressure chamber is released instantaneously, the pressure-releasing hole 122 is disposed on the cavity wall of the cavity, and the predetermined position is a position where the pressure-bearing plate 13 rises when the material returning operation and the material taking operation are completed. A limiting plate 15 is arranged at the orifice of the concave cavity, an air bag 14 capable of radially and centripetally expanding under the upward extrusion action of the pressure-bearing plate is arranged at the bottom of the limiting plate 15, the air bag 14 is annularly distributed in the concave cavity, the sprayed spherical product is pressed on a closing-in of the expanded air bag 14, and the diameter of the closing-in is smaller than that of the spherical product.

As shown in fig. 1, 5-8, the feed assembly 20 of the present invention includes a take-off drive bar 21. The material taking driving rod 21 comprises a material taking straight rod 211 with a rod length extending along the vertical direction, and a material taking curved rod 212 which is arranged upwards and slantwise is connected to the material taking straight rod 211. The material taking curved rod 212 is provided with a U-shaped material taking push rod 213 with two vertically and upwardly extending ends, and two ends of the material taking push rod 213 are provided with bayonets 2131 with two ends clamped with the corresponding material feeding slide rod 235, so that the material taking push rod 213 pushes the material feeding slide rod 235 to move from bottom to top. Get material straight-bar 211 and follow a set of guide way 121 along the vertical direction slip grafting, and get the bottom of straight-bar 211 and be connected each other with guide block 131, and then when pressure bearing disc 13 removed, get material actuating lever 21 and also can follow pressure bearing disc 13 synchronous motion.

The feeding assembly 20 further comprises a storage box 23 for storing single spherical products, wherein the storage box 23 is rectangular and has an inner space for accommodating only one spherical product. A feed port 231 is provided on a side surface of the rectangular parallelepiped storage box 23 and a discharge port 232 is provided on a bottom surface thereof. The inlet 231 and the outlet 232 are the same in size and shape. The feeding sliding grooves 233 extending along the length direction of the frame are symmetrically formed in the frames on the two sides of the feeding port 231, the feeding sliding rods 235 are connected to the feeding sliding grooves 233 in the sliding mode, the two ends of each feeding sliding rod 235 are located in the feeding sliding grooves 233 on the two sides respectively, and therefore the feeding sliding rods 235 can keep horizontal and move up and down in a reciprocating mode. Discharge chute 234 that the slot length direction extends along this frame length direction is seted up to the symmetry on the frame of discharge gate 232 both sides, and discharging chute 234 sliding connection has ejection of compact slide bar 236, and the both ends of ejection of compact slide bar 236 are located the ejection of compact spout 234 of both sides respectively, and then make ejection of compact slide bar 236 can keep the horizontality to do reciprocating motion along ejection of compact spout 234. A material loading cloth 237 is connected between the discharging slide bar 236 and the feeding slide bar 235, a rotating shaft axially arranged in parallel with the length direction of the frame is arranged at the frame where the feeding port 231 and the discharging port 232 are intersected, and the material loading cloth 237 is connected with the feeding slide bar 235 and the discharging slide bar 236 by bypassing the rotating shaft. In this way, in the process of repeatedly pulling the loading cloth 237, the rotation of the rotating shaft can reduce the friction of the loading cloth 237, and the service life of the loading cloth 237 is prolonged.

The driving member can pull the loading cloth 237 to move and cover the feed inlet 231 or the discharge outlet 232, so that the discharge outlet 232 closes the feed inlet 231 and opens or the feed inlet 231 closes the discharge outlet 232 and opens. The driving member comprises supporting columns 239 arranged on the side opposite to the feeding port 231, and a pulling spring 238 for pulling the discharging slide bar 236 to move along the discharging chute 234 to be far away from the feeding port 231 is arranged between the two groups of supporting columns 239 and the two ends of the discharging slide bar 236; the driving member further includes a material taking driving rod 21 for pushing the material feeding sliding rod 235 to move from bottom to top along the material feeding chute 233. The feeding assembly 20 further comprises a supporting frame 26, a storage box 25 is arranged on the supporting frame 26, the bottom of the storage box 25 is communicated with the feeding pipe 24, and the discharging end of the feeding pipe 24 is communicated with the feeding port 231. A discharging chute 22 is arranged below the discharging port 232, the discharging chute 22 is arranged on the material taking curved rod 212, and the discharging chute 22 extends from the discharging port 232 to the nozzle 133 component in a downward inclined manner, so that the spherical products can be rolled to the spraying position.

As shown in fig. 9-11, the material return assembly 30 includes two posts 32 disposed on the base 11. A material pushing rod 33 is hinged between the two upright posts 32, the material pushing rod 33 is of an L-shaped structure and naturally sinks under the action of self gravity. A supporting seat 331 is arranged on one side of the material pushing rod 33, and a cross rod 332 which can only be bent downwards is hinged on the supporting seat 331 through a torsion spring seat. The material returning driving rod 31 comprises a material returning straight rod 311 extending along the vertical direction, the material returning straight rod 311 is inserted into the group of guide grooves 121 in a sliding mode along the vertical direction, the bottom end of the material returning straight rod 311 is connected with the guide block 131, and therefore when the pressure bearing disc 13 moves, the material returning driving rod 31 can also move synchronously along with the pressure bearing disc 13. The top end of the material returning straight rod 311 is provided with an L-shaped material returning curved rod 312, and the material returning straight rod 311 and the material returning curved rod 312 form a Z-shaped structure.

The material returning toggle lever 312 is provided with a material returning lever 313 which is spatially perpendicular to the cross bar 332, and the cross bar 332 is located on a moving path of the material returning lever 313. When the material returning pry bar 313 moves upwards, the cross bar 332 moves along the length direction of the material returning pry bar 313 relative to the material returning pry bar 313, so that the cantilever end of the material pushing bar 33 rotates to the position of the spherical product on the closing-in of the air bag 14, and pushes the spherical product down onto the material returning slideway 34 and finally falls into the collection box 35. When material returning pry bar 313 passes through cross bar 332 and then descends, material returning pry bar 313 presses down on the cantilever end of cross bar 332 and causes cross bar 332 to bend downward and then pass through cross bar 332.

The specific using process comprises the following steps:

in the actual operation process, firstly, the supercharger 16 is started, and the supercharger 16 continuously fills cooling gas into the air pressure chamber to continuously increase the pressure in the air pressure chamber; the product balls falling at the cavity opening of the cavity are impacted by the gas from the nozzle 132. With the continuous increase of the pressure in the air pressure chamber, the spherical product stably floats at the cavity opening of the concave cavity. Because the pressure in the air pressure chamber is continuously increased, the pressure-bearing disc 13 is also continuously increased under the action of overcoming the tension of the return spring 134; when raised to a predetermined position, the booster 16 maintains the current pressure under the influence of the sensor and at the same time the nozzle 133 is spraying continuously. Because the spherical product rotates continuously in the suspension process, the surface of the spherical product can be sprayed fully and uniformly. And the cooling gas is used, so that the sprayed anti-caking agent can be quickly dried. After the spraying is continued for a set time, the sensor sends a signal to control the nozzle 133 to stop spraying, and the booster 16 is turned on to boost pressure. The pressure-bearing disc 13 is continuously raised, and at the same time, the spherical products are continuously raised. The pressure bearing disc 13 is contacted with the air bag 14 in the rising process; the balloon 14 is pressed to expand in the radial direction toward the center. The spherical product has moved above the air bag 14, and the air nozzle 132 is gradually pressed to cover under the continuous expansion of the air bag 14, and the buoyancy applied to the spherical product is gradually reduced and falls on the air bag 14.

In the process that the air bag 14 gradually contracts, the material pushing rod 33 is continuously pried; when the spherical product falls on the air bag 14, the cantilever end of the material pushing rod 33 can push the spherical product down. At the same time, the supply is started from the magazine 23.

During normal feeding, the spherical products in the storage magazine 23 slide along the feed tube 24, the frontmost one sliding into the storage magazine 23. At this time, the discharging slide rod 236 is located at the leftmost end of the discharging chute 234 under the action of the pulling spring 238, the feeding slide rod 235 is pulled to the lowermost end of the feeding chute 233, and the material carrying cloth 237 covers the discharging port 232. Since the size and shape of the loading cloth 237 are matched with the discharging port 232, the spherical products are pressed on the loading cloth 237, that is, the loading cloth 237 pockets the spherical products in the storage box 23. When materials need to be taken, the material taking push rod 213 moves upwards at this time, the bayonet 2131 is clamped with the two ends of the material taking push rod, so that the material feeding slide rod 235 is pushed to move upwards along the material feeding chute 233, and the material feeding slide rod 235 pulls the material discharging slide rod 236 to move along the material discharging chute 234 through the material loading cloth 237. When the feeding slide rod 235 moves to the topmost end of the feeding chute 233, the discharging slide rod 236 moves to the topmost end of the discharging chute 234, and the material loading cloth 237 at the moment cuts off the communication between the feeding pipe 24 and the material storage box 23, so that the spherical products are prevented from being continuously discharged under the condition that the discharging port 232 is opened. When the discharge port 232 is opened, the blanking slide is located below the discharge port 232, and the spherical products slide down along the blanking slide 22 onto the air bag 14. When the spherical product falls down, the pressure bearing disc 13 reaches the pressure relief hole 122 on the spraying base 12, at the moment, the air pressure chamber is communicated with the outside atmosphere, the pressure is relieved instantly, and the sensor simultaneously controls the booster to stop working. Pressure-bearing disc 13 moves downwards under the action of return spring 134 to its initial position, at which point booster 16, under the control of the sensor, resumes operation and starts a new spray cycle. During the process of resetting the pressure-bearing disc 13, the air bag 14 is also recovering the shape slowly, and the spherical product slowly falls into the concave cavity, finally presses on the air nozzle 132, and then suspends under the action of the air nozzle 132 again, thereby completing a new spraying operation.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (10)

1. The spherical product surface spraying device is characterized by comprising a spraying component (10), wherein an air nozzle (132) for blowing and suspending a spherical product through cooling gas and a nozzle (133) for spraying a anticaking agent on the surface of the product are arranged in the spraying component (10); a material returning component (30) for taking the ball-shaped products after the spraying is finished and a material supplying component (20) for supplying new ball-shaped products to the spraying position are arranged beside the spraying component (10).

2. The spherical product surface spraying device according to claim 1, characterized in that the spraying assembly (10) comprises a spraying base (12) arranged on the base (11), a cavity with an open top end is formed in the spraying base (12), a pressure bearing disc (13) is arranged in the cavity in a dynamic sealing manner, a closed air pressure chamber is formed between the pressure bearing disc (13) and the cavity bottom of the cavity, and an air pressure part for enabling the pressure bearing disc (13) to do reciprocating linear motion along the vertical direction is arranged in the air pressure chamber; an air nozzle (132) communicated with the air pressure chamber and a nozzle (133) connected with the sprayer are both arranged on the pressure bearing disc (13), the spherical products fall into the concave cavity and are suspended above the air nozzle (132), and the spherical products can synchronously move upwards along with the pressure bearing disc (13).

3. The spherical product surface spraying device according to claim 2, wherein a guide groove (121) vertically extending in the groove length direction is arranged on the side wall of the concave cavity, and a guide block (131) in sliding fit with the guide groove (121) is arranged on the pressure bearing disc (13); the pneumatic pressing part comprises a supercharger (16) which pressurizes the pneumatic chamber to push the pressure bearing disc (13) to move upwards and a return spring (134) which can pull the bearing disc to move downwards; the air pressure part further comprises a pressure relief hole (122) which is communicated with the air pressure chamber and the atmospheric environment when the pressure bearing disc (13) moves upwards to a preset position so as to enable the air pressure chamber to relieve pressure instantly, the pressure relief hole (122) is arranged on the cavity wall of the concave cavity, and the preset position is a position where the pressure bearing disc (13) ascends when material returning operation and material taking operation are completed.

4. The spherical product surface spraying device according to claim 3, characterized in that a limiting plate (15) is arranged at the mouth of the cavity, an air bag (14) which can radially and centripetally expand under the upward extrusion action of the pressure bearing plate is arranged at the bottom of the limiting plate (15), the air bag (14) is annularly distributed in the cavity, the sprayed spherical product is pressed on the closing-up of the expanded air bag (14), and the diameter of the closing-up is smaller than that of the spherical product.

5. The spherical product surface spraying device as claimed in claim 1, 2, 3 or 4, characterized in that the material returning assembly (30) comprises a vertical column (32) arranged on the base (11), a material pushing rod (33) is hinged on the vertical column (32), a supporting seat (331) is arranged on the cantilever end of the material pushing rod (33), and a cross rod (332) which can only be bent downwards is hinged on the supporting seat (331) through a torsion spring seat; the material returning pry bar (313) which is spatially vertical to the cross bar (332) is arranged on the material returning driving rod (31), and the cross bar (332) is positioned on the moving path of the material returning pry bar (313); the material returning pry bar (313) moves upwards, the cross bar (332) moves along the length direction of the material returning pry bar (313) so that the cantilever end of the material pushing bar (33) rotates to a spherical product position on the closing-in of the air bag (14) and pushes the spherical product down into the collection box (35); the material returning pry bar (313) goes downwards after crossing the cross bar (332), and the material returning pry bar (313) presses the cantilever end of the cross bar (332) downwards and enables the cross bar (332) to bend downwards and then cross the cross bar (332).

6. The spherical product surface spraying device as claimed in claim 5, characterized in that the material returning driving rod (31) further comprises a material returning straight rod (311), the top end of the material returning straight rod (311) is provided with an L-shaped material returning curved rod (312), and the material returning pry bar (313) is arranged on the material returning curved rod (312); the material returning straight rod (311) is inserted in the group of guide grooves (121) in a sliding mode along the vertical direction, and the bottom end of the material returning straight rod (311) is fixedly connected with the guide blocks (131).

7. The spherical product surface spraying device according to claim 5, wherein the feeding assembly (20) comprises a storage box (23) capable of storing single spherical product, the side surface of the rectangular storage box (23) is provided with a feeding hole (231) and the bottom surface is provided with a discharging hole (232); the frame at two sides of the feed port (231) is symmetrically provided with feed chutes (233) extending along the length direction of the frame, and the feed chutes (233) are connected with feed sliding rods (235) in a sliding manner; discharging sliding grooves (234) extending along the length direction of the frame in the groove length direction are symmetrically formed in the frames on the two sides of the discharging port (232), discharging sliding rods (236) are connected in the discharging sliding grooves (234) in a sliding mode, and a material carrying cloth (237) is connected between the discharging sliding rods (236) and the feeding sliding rods (235); the driving piece can pull the loading cloth (237) to move and cover the feed port (231) or the discharge port (232), so that the feed port (231) is closed by the discharge port (232) and the discharge port (232) is opened by the feed port (231).

8. The device for spraying the surface of the spherical product according to claim 7, wherein the driving member comprises supporting columns (239) arranged on the side opposite to the feeding port (231), and a pulling spring (238) for pulling the discharging slide bar (236) to move along the discharging chute (234) to be away from the feeding port (231) is arranged between two groups of supporting columns (239) and two ends of the discharging slide bar (236); the driving piece also comprises a material taking driving rod (21) which pushes the feeding sliding rod (235) to move from bottom to top along the feeding chute (233); the frame that feed inlet (231) and discharge gate (232) are crossing has arranged the axial and this frame length direction parallel arrangement's pivot, and the pivot is walked around in year material cloth (237) and feeding slide bar (235) and ejection of compact slide bar (236) are connected each other.

9. The spherical product surface spraying device as claimed in claim 8, wherein the material taking driving rod (21) comprises a material taking straight rod (211) with a rod length extending along the vertical direction, the material taking straight rod (211) is inserted into a group of guide grooves (121) in a sliding manner along the vertical direction, and the bottom end of the material taking straight rod (211) is fixedly connected with the guide block (131); get and be connected with material curved bar (212) of getting that the leaned on upward slope set up on material straight-bar (211), get and arrange material push rod (213) that the vertical upwards extension in U type and both ends on material curved bar (212), get the bayonet socket (2131) of arranging the both ends joint that can correspond with feeding slide bar (235) at the both ends of material push rod (213) to make and get material push rod (213) and promote feeding slide bar (235) and move from bottom to top.

10. A spherical product surface spraying device according to claim 4, characterized in that the feeding assembly (20) further comprises a support frame (26), a storage box (25) is arranged on the support frame (26), the bottom of the storage box (25) is communicated with a feeding pipe (24), and the discharging end and the feeding hole (231) of the feeding pipe (24) are communicated with each other; a blanking slide way (22) is arranged below the discharge hole (232), the blanking slide way (22) is arranged on the material taking curved rod (212), and the blanking slide way (22) is downwards inclined from the discharge hole (232) and extends to the air bag (14) so that the spherical products can be rolled to the spraying position.

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