CN115055297A

CN115055297A - Powder storage cup applied to electrostatic spray gun

Info

Publication number: CN115055297A
Application number: CN202210414765.4A
Authority: CN
Inventors: 刘君; 龙开成; 龙开华; 龙开相; 毛鹏磊
Original assignee: Ningbo Licheng Coating Technology Co ltd
Current assignee: Ningbo Licheng Coating Technology Co ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-09-16

Abstract

The application discloses be applied to electrostatic spray gun's powder storage cup, cup and whirl atomizer including storage powder coating, the cup on be provided with and be used for to leading-in gaseous air inlet in the cup, the suspension of powder coating in the leading-in gas drive cup of air inlet, the cup is provided with the play powder mouth that is used for supplying powder coating to electrostatic spray gun, whirl atomizer include gas generating device and set up the fumarole at the cup wall, in the gaseous leading-in cup of fumarole that gas generating device produced, remove along the cup wall from the leading-in gas of fumarole department and produce the whirl. Parts such as a funnel cup, a powder pump, a stirrer motor and the like are omitted, the parts of the electrostatic spray gun in use and the weight of the parts are greatly simplified, and the electrostatic spray gun is convenient to use; the powder coating is atomized, and the phenomenon of uneven powder discharge in the spraying process is avoided.

Description

Be applied to electrostatic spray gun's powder storage cup

Technical Field

The application relates to the field of electrostatic powder spraying, in particular to a powder storage cup applied to an electrostatic spray gun.

Background

The electrostatic powder spray gun is a spraying tool for surface coating, and is mainly used for electrostatic powder spraying of metal or surface conductive workpieces. The working principle of the electrostatic powder spray gun is as follows: under the drive of the powder sucking and conveying airflow provided by the Venturi powder pump, the powder paint flows into the gun body via the powder conveying pipe and is sprayed out from the nozzle of the gun head in an atomized state, an electrode needle capable of releasing high-voltage static electricity is arranged in the center of the nozzle and can radiate an electrostatic field, when the atomized powder paint passes through the high-voltage electrostatic corona field, the powder is charged to carry electrostatic charges, and finally the powder paint is adsorbed on the surface of a grounded workpiece to be sprayed, flows into a high-temperature drying tunnel via a production line to melt the powder and is cooled and solidified, so that the electrostatic spraying process is the electrostatic spraying process.

When the powder electrostatic spray gun is used, the powder electrostatic spray gun is generally divided into two conditions, one is used for continuously spraying products in batches for a long time, the other is used for trial spraying of the products to confirm whether the detection indexes of the cured powder coating, such as color, thickness, fastness, surface smoothness, environmental protection and the like, are qualified, and the powder electrostatic spray gun can be put into batch spraying production after all the detection indexes meet the requirements.

Under normal conditions, powder coating of a batch spraying product needs to be filled into a large-capacity powder storage barrel, the powder coating is conveyed to a powder electrostatic spray gun through a powder pump arranged on the powder storage barrel and finally sprayed out of the spray gun to a sprayed workpiece to realize the coating of the powder coating, and the powder coating is filled into the large-capacity powder storage barrel to store more powder coating, so that the powder coating does not need to be frequently supplemented into the powder storage barrel during batch spraying production, and the labor intensity and the working efficiency of workers are reduced. But the product is sprayed in a test way, whether the properties of the used powder coating after baking can meet the requirements or not is not known, whether all indexes of the powder coating are qualified or not is determined, whether the powder coating can be used for batch spraying production or not, therefore, the product is sprayed in a test way before the batch production, the powder quantity required by the product is small, if the powder coating sprayed in the test way is poured into a large-capacity powder barrel to spray the product in a test way, even if only one product is sprayed, a plurality of powder coatings are required to be poured to spray normally, and different types or colors of powder coatings in the powder barrel need to be cleaned up carefully before the powder barrel produces in a normal batch, otherwise the next normal spraying production can be influenced, the product can be sprayed and produced without stopping a redundant production line to provide the product test spraying, and the powder spraying in a test way is actually prepared before the powder coating in batch, so that the powder coating cannot be qualified and can be purchased again for several days, therefore, the situation that the direct production is carried out when the test spraying is finished and the product is qualified does not exist. Therefore, when powder coating is tried to be sprayed, a smaller powder storage cup is needed to store the powder coating so as to facilitate powder replacement and cleaning and save time, but if a powder pump is simply additionally arranged on a cup capable of containing the powder coating and a plurality of related auxiliary parts are additionally arranged to achieve the function of the powder barrel, the powder barrel is equivalently manufactured into a miniature powder barrel, the structure is relatively complex, and the manufactured powder barrel is relatively heavy.

The powder coating test spray gun commonly used in the prior art has the following publication numbers: CN 214107545U's patent discloses a high-efficient convenient manual electrostatic spray gun, including the spray gun body, the lower extreme of the spray gun body is fixed with the handle, the lower extreme fixedly connected with power cord of handle, the fixed feeding that is equipped with of right-hand member of the spray gun body connects, the fixed solid fixed ring that is equipped with of upside opening part of feeding joint, gu fixed ring's upper end is provided with the toper storage bottle, the bottleneck department fixedly connected with connecting pipe of toper storage bottle, the outer pipe wall of connecting pipe and solid fixed ring's interior rampart sliding connection, gu fixed ring's inside is located the downside department fixed connection of connecting pipe and has the horizontally ring baffle, the ring baffle upper end offsets with the lower extreme of connecting pipe and sets up, the circular slot has been seted up to the outer pipe wall symmetry in the left and right sides of connecting pipe. The utility model discloses be convenient for carry out the dismouting to the storage bottle when reloading, labour saving and time saving is efficient.

The test spray gun is characterized in that a cup for containing powder coating is made into a funnel shape and is arranged on a manual powder spray gun, a powder pump device for sucking powder by adopting a Venturi pneumatic principle is arranged at the lowest end of the funnel, and when the powder coating is tested and sprayed, the powder coating in a powder storage cup is sucked by the powder pump and is sprayed out by an electrostatic spray gun. This powder test spray gun has the following disadvantages: 1. the powder spraying is not uniform; 2. the spraying posture is limited; it is inconvenient to spray a product having a complicated shape. 3. The spray gun is heavy and inconvenient to use.

There is also a publication number in the prior art: CN 213377290U's utility model discloses a powder coating electrostatic spray gun device is with powder bucket mechanism, including spray gun body, powder bucket body, interior bucket and motor, the one end of spray gun body is fixed with the connecting block, the inside diaphragm that is provided with of lower extreme of powder bucket body, the internally mounted of powder bucket body has interior bucket, the draw-in groove has been seted up to the upper surface of interior bucket, the lower fixed surface of apron has the inserted block, the surface of apron is provided with the motor, and the output of motor is connected with the (mixing) shaft, the surface mounting of (mixing) shaft has the puddler, and the below of (mixing) shaft is fixed with the connecting rod. This powder coating electrostatic spray gun is powder bucket mechanism for device, the surface mounting of apron has motor, (mixing) shaft and puddler, drives the (mixing) shaft through the motor and rotates, can carry out abundant stirring to the inside powder coating of interior bucket, avoids the coating to produce the phenomenon that the agglomeration appears condensing to the ejection of compact that makes the spray gun body is more smooth and easy, lets workpiece surface's coating thickness more even.

The powder barrel mechanism for the powder coating electrostatic spray gun device is disclosed as follows in the prior art: the patent of CN214107545U discloses on the basis of a high-efficient convenient manual static spray gun, installed the agitator additional in funnel-shaped powder storage cup, can prevent that powder coating caking can not flow to the phenomenon of the secondary disconnected powder of spraying in-process appears in the gun body spray pipe in the cup, nevertheless causes whole gun body to become heavier because of increasing relevant devices such as agitator and motor that drive the agitator, and still exists the drawback that the gun body can not deflect or the spraying of falling over.

Disclosure of Invention

The technical problem to be solved by the application is to provide a powder storage cup applied to an electrostatic spray gun, components such as a funnel cup, a powder pump, a stirrer and a stirrer motor are omitted, accessories of the electrostatic spray gun in use and the weight of the accessories are greatly simplified, and the electrostatic spray gun is convenient to use; the powder coating is atomized, and the phenomenon of uneven powder discharge in the spraying process is avoided.

The technical scheme adopted by the application is as follows: the utility model provides a be applied to electrostatic spray gun's powder storage cup, includes storage powder coating's cup and whirl atomizer, the cup on be provided with the air inlet that is used for leading-in gas in the cup, the suspension of powder coating in the leading-in gas drive cup of air inlet, the cup is provided with the play powder mouth that is used for supplying powder coating to electrostatic spray gun, whirl atomizer include gas generating device and set up the fumarole at the cup wall, in the gaseous leading-in cup of fumarole that gas generating device produced, the gaseous along cup wall removal production whirl of the leading-in gas of fumarole department.

Compared with the prior art, the application has the advantages that: first, a gas inlet is provided for introducing gas, and the gas introduced by the gas inlet drives the powder coating in the cup to suspend. The powder coating of suspension state has also avoided piling up, receives the effort of whirl after, can be in the cup internal rotation, realizes abundant atomizing.

And secondly, a rotational flow atomizer is arranged, a gas generating device of the rotational flow atomizer generates gas, and the gas is introduced into the cup body through the gas injection holes. The gas introduced by the gas injection holes moves along the wall surface of the cup body and generates rotational flow. That is, the operation of the swirl atomizer will generate a swirl flow in the cup in which the powder coating is stored. Naturally, the rotational flow will act on the powder coating in a suspended state, and the powder coating is driven by the rotating airflow to rotate in the cup body. Under the disturbance of the rotating airflow, the powder coating is fully atomized in the cup body, and the atomized powder coating flows to the powder outlet pipe interface under the action of the air pressure in the cup body and is input to the powder electrostatic spray gun, so that the powder coating is sprayed.

Compare the powder coating that electrostatic spray gun was spouted in prior art trial does not pass through the fluidization but depends on gravity to flow down along the funnel, and at the in-process that powder coating slided down along the funnel inner wall, the narrow department of funnel inner wall lower extreme often has the powder to be detained the phenomenon, the powder caking is blocked the phenomenon that can not flow downwards and takes place, causes to flow to the powder of bottleneck department under the funnel and appears retardation or discontinuous situation. Therefore, the venturi powder supply device can not suck the powder intermittently, which causes the phenomenon that the powder sprayed by the powder gun is discontinuous and uneven. This application supplies powder not relying on gravity at the during operation, and what lean on is the inside rotatory air current of cup, powder intermittent type nature interrupt phenomenon can not appear to the inhomogeneous problem of spraying because of indirect disconnected powder appears has been avoided.

This application does not direct mount on electrostatic spray gun, has consequently subtracted the weight that funnel stored up powder cup, powder coating, powder agitator and driving motor etc. on the spray gun, and the spray gun is used more lightly. Great improvement the static spray gun's that tries to spout convenience of use and practicality. This application separates with the electrostatic spray gun, can adopt arbitrary powder electrostatic spray gun as the electrostatic spray gun of trying to spout.

In some embodiments of the present application, the powder outlet is connected to the electrostatic spray gun through a powder conveying pipe. The powder conveying pipe is a hose. The electrostatic spray gun is not directly arranged on the electrostatic spray gun, and powder supply is realized through the powder conveying pipe. And then make electrostatic spray gun's spraying gesture unrestricted, can the more complicated product of spraying shape, the electrostatic spray gun of prior art trial spraying makes the powder flow direction funnel cup bottom narrow exit and gets into the powder pump and realize supplying the powder because of the funnel cup on the spray gun relies on powder coating self gravity, therefore the spray gun can only keep funnel cup rim of a cup state up and just can spray, that is to say that powder electrostatic spray gun can only positive gesture spraying. If the spray gun is tilted, crossed or turned upside down, the powder supply is stopped and the spraying is not carried out. In the actual spraying process, due to the fact that the sprayed products are different in shape complexity, the spray gun is often required to be transversely or reversely sprayed to be sprayed to the surfaces of some special corner portions of the products for construction, however, when the gun body inclines, transversely or reversely, the powder cup on the spray gun body cannot supply powder, and therefore the powder test spray gun has spraying posture and angle limitations. This application is not installed on the rifle body, but by defeated powder hose connection electrostatic spray gun for powder spray gun can adopt any gesture to carry out the spraying when the spraying, the condition that the confession powder was interrupted can not appear.

In some embodiments of the present application, the air inlet is located at the bottom of the cup. The gas introduced by the gas inlet is mainly used for resisting the gravity of the powder coating and driving the powder coating in the cup body to suspend. Specifically, the gas introduced through the gas inlet is high-pressure gas.

In some embodiments of the present application, the powder outlet is located at an upper portion of the cup body. Specifically, the powder outlet is positioned in the cup body or on the wall surface of the cup body. In practical application, the position of the powder outlet is not lower than the position of the air injection hole. The powder coating can be led into the powder outlet after the rotational flow effect, and the moving direction of the powder coating to the powder outlet is not opposite to the gas direction of the gas inlet, so that the powder movement disorder is caused.

In some embodiments of the present application, the cup body includes a base, a lid, and a body, which are connected to form a cavity for holding the powder coating. The cup body is provided with a circular inner wall.

Specifically, the air inlet is arranged on the base, the bottom of the cup body is provided with a fluidization plate, the surface of the fluidization plate is provided with air holes, a space exists between the vulcanization plate and the inner bottom surface of the base, the vulcanization plate and the base form a fluidization cavity, and the air inlet is communicated to the inner bottom surface of the base.

The gas is introduced into the cup body through the gas inlet and can reach the fluidization cavity in advance, and after the gas is uniformly buffered in the fluidization cavity, the gas is differentiated into soft gas flow through the fluidization plate to act on the powder coating so as to drive the powder coating to be in a floating fluidization state.

Specifically, dense micropores are distributed on the fluidization plate.

In some embodiments of the present application, the powder outlet is disposed on the cup lid. The atomized powder coating can flow to the powder outlet under the action of air pressure in the cup body. Specifically, the cup cover is provided with a powder outlet port, the powder outlet port is communicated with the powder outlet port, and the powder outlet port is connected with the powder conveying pipe.

In some embodiments of the present application, the cup wall is provided with at least one gas injection hole. Preferably, the wall surface of the cup body is symmetrically provided with two air injection holes which are arranged back to back.

In some embodiments of the present application, the air injection holes are arranged in a direction of an axis tangential to the wall surface of the cup body. The gas introduced from the gas injection holes can move along the wall surface of the cup body to form a rotational flow.

Specifically, the air injection holes are positioned in a plane vertical to the axial direction of the cup body. Namely, the angle of the air injection hole is tangential to the right transverse direction of the section of the inner wall of the cup body. If the cup body is placed on a horizontal plane, the air injection holes are also positioned in the same horizontal plane.

In another embodiment, the gas injection holes are at an acute angle to a plane perpendicular to the axial direction of the cup. Specifically, the air injection holes are inclined toward the side of the fluidization plate. Can achieve better powder coating atomization effect. Specifically, the inclination angle of the air injection hole and the section of the inner wall of the cup body can be set according to the designed powder loading amount of the cup body, so that more ideal rotation and disturbance effects on the powder coating in the cup body can be achieved.

In some embodiments of the present application, the cup body is provided with a vent pipe, the vent pipe penetrates through the wall surface of the cup body, and the gas is introduced into the cup body through the vent pipe. The wall of the vent pipe is provided with a gas orifice, and the axial direction of the gas orifice is tangent to the circumferential surface of the inner wall of the cup body.

Specifically, one end of the vent pipe penetrating through the wall surface of the cup body is a closed blind end, and the wall of the vent pipe close to the inner wall part of the cup body in the cup body is provided with a gas orifice penetrating through the wall of the vent pipe, and the gas orifice and the inner wall of the cup body are in a tangent direction.

The vent pipe can rotate around the axis thereof. And then the angle of the air injection hole is adjusted to realize that the compressed air is injected into the rotating airflow generated in the cup body through the air injection hole to achieve a better powder coating atomization effect.

Preferably, the vent pipe vertically penetrates through the wall surface of the cup body. The part of the vent pipe, which is positioned outside the cup body, is provided with a vent interface which is used for communicating compressed air.

In some embodiments of the present application, the cup body is sleeved with a sleeve, an annular cavity is formed by the inner wall surface of the sleeve and the outer surface of the cup body, the sleeve is provided with an air inlet, and compressed air is introduced into the annular cavity through the air inlet. Compressed air is guided into the annular cavity body through the air inlet interface and then guided into the cup body through the air injection holes on the surface of the cup body to form rotational flow.

Specifically, the outer peripheral face of the cup body is provided with an annular boss, the upper end of the pipe sleeve is provided with a pressing ring, the pressing ring is pressed down on the annular boss, and a sealing gasket is arranged between the pressing ring and the annular boss. The base surface be provided with the external screw thread, the lower extreme of pipe box is provided with the internal thread, pipe box and base threaded connection.

Furthermore, a sealing ring groove is arranged below the external thread, and a sealing ring is arranged in the sealing ring groove. When the sleeve is screwed with the cup body and screwed tightly, the sealing ring is pressed by the inner wall of the sleeve.

So far, the sleeve pipe and the cup body are connected in a sealing mode, and gas in the annular cavity can only be discharged through the gas injection holes. When the air inlet interface is communicated with the compressed air, the compressed air is filled in the annular cavity, flows to the air injection holes and starts to provide rotary air flow into the cup body through the air injection holes. At the moment, the rotational flow atomizer starts to work, and the powder coating atomization effect which is the same as that of the powder coating atomized by directly connecting compressed air into the air injection holes can be achieved.

In some embodiments of the present application, the upper end of the sleeve is provided with a convex ring, the inner wall of the convex ring is provided with a sealing ring groove, and a sealing ring is arranged in the sealing ring groove. The convex ring acts on the outer surface of the cup body, and the sealing ring deforms under pressure. The cup body and the upper end of the sleeve are sealed, so that a good sealing effect can be achieved.

In some embodiments of the present application, a powder outlet tube is disposed in the cup body, and the powder outlet is disposed on a wall of the powder outlet tube. The powder outlet port is arranged on the base, and the powder outlet pipe is partially inserted into the base and communicated with the powder outlet port. Namely, the powder coating positioned in the cup body enters the powder outlet pipe from the powder outlet, and then reaches the powder outlet port through the powder outlet pipe. The powder outlet interface is connected with the electrostatic spray gun through a powder conveying pipe.

In some embodiments of the present application, an end of the powder outlet tube located in the cup body is open, and the open end of the powder outlet tube forms the powder outlet.

In some embodiments of the present application, one end of the powder outlet tube located in the cup body is a blind end, and the powder outlet is located on a wall surface of the powder outlet tube. Preferably, the wall surface of the powder outlet pipe can be provided with a plurality of powder outlets.

Specifically, the lower end of the powder outlet pipe penetrates through the fluidization plate, and the lower end of the powder outlet pipe is in threaded connection with the base.

Drawings

The present application will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a first embodiment of the present application;

FIG. 2 is a cross-sectional guidance view of the first embodiment of the present application;

FIG. 3 is a cross-sectional view G-G of FIG. 2;

FIG. 4 is a cross-sectional view H-H of FIG. 2;

FIG. 5 is a schematic structural diagram of a third embodiment of the present application;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural diagram of a fourth embodiment of the present application;

FIG. 8 is a cross-sectional guidance view of a fourth embodiment of the present application;

FIG. 9 is a schematic cross-sectional view E-E of FIG. 8;

FIG. 10 is a cross-sectional view F-F of FIG. 8;

FIG. 11 is a schematic structural diagram of a fifth embodiment of the present application;

FIG. 12 is a cross-sectional view M-M of FIG. 11;

FIG. 13 is a cross-sectional view N-N of FIG. 11;

FIG. 14 is a schematic cross-sectional view illustrating a sixth embodiment of the present invention;

FIG. 15 is a schematic structural diagram of a seventh embodiment of the present application;

FIG. 16 is a cross-sectional view of FIG. 15;

fig. 17 is another schematic structural diagram of a seventh embodiment of the present application.

Wherein the reference numerals are specified as follows: 1. a cup body; 1a, a base; 1b, a cup cover; 1c, a cup body; 2. an air inlet; 3. a powder outlet; 4. a gas injection hole; 6. a fluidization plate; 7. a fluidization chamber; 8. a hasp;

9. a breather pipe; 11. a first seal ring;

12. a sleeve; 13. an annular cavity; 14. an air inlet interface; 15. an annular boss; 16. pressing a ring; 17. a gasket; 18. a second seal ring; 19. a convex ring; 20. a third seal ring;

21. a powder outlet pipe; 22. and a powder outlet port.

Detailed Description

The present application will now be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

A powder storage cup for an electrostatic spray gun, embodying a structure as shown in fig. 1 to 4: including storage powder coating's cup 1 and whirl atomizer, cup 1 on be provided with and be used for leading-in gaseous air inlet 2 in the cup 1, the suspension of powder coating in the gaseous drive cup 1 of air inlet 2 leading-in, cup 1 is provided with the play powder mouth 3 that is used for supplying powder coating to electrostatic spray gun, whirl atomizer include gas generator and set up the fumarole 4 at 1 wall of cup, in the gaseous leading-in cup 1 of fumarole 4 that produces, follow the gaseous 1 wall removal production whirl of fumarole 4 department leading-in gas.

Before the cup is used, the cup body 1 is placed on the ground or a workbench, and a proper amount of powder coating is added into the cup body 1. Gas (typically compressed air) is introduced into the gas inlet 2 so that the powder coating material is in a fluidized suspension within the cup 1. At this time, the gas (generally, compressed air) introduced from the gas injection holes 4 generates a whirling gas flow in the cup body 1. Under the disturbance of the rotating air flow, the powder coating in the suspension state is driven to rotate in the cup body 1 together, and the powder coating is fully atomized in the cup body 1.

Along with the fumarole 4 constantly blows and jets compressed air to the cup 1, atmospheric pressure in the cup 1 can be higher than the atmospheric pressure outside the cup 1, under the promotion of pressure differential, the powder coating of atomizing in the cup 1 can flow to powder outlet 3. The powder coating led out from the powder outlet 3 is input into the electrostatic spray gun so as to realize the spraying of the powder coating.

Example two, as shown in fig. 1 to 4: the powder outlet 3 is connected with the electrostatic spray gun through a powder conveying pipe. The powder conveying pipe is a hose. Since the hose and the electrostatic spray gun are prior art products in the field, they are not further developed in the present application, and a specific structural schematic diagram is not provided in the drawings of the specification.

The powder coating is conveyed to the electrostatic spray gun through the powder conveying pipe, and powder is not supplied through the funnel storage cup arranged on the spray gun like the electrostatic spray gun for trial spraying in the prior art, so that the powder electrostatic spray gun eliminates the weight of the funnel storage cup, the powder coating or a powder stirrer, a driving motor and the like, and the powder electrostatic spray gun does not need to use a special powder electrostatic trial spray gun provided with auxiliary parts such as the funnel cup and the like.

Specifically, the cup body 1 comprises a base 1a, a cup cover 1b and a cup body 1c, wherein the base 1a, the cup body 1c and the cup cover 1b are connected to form a cavity for containing powder coating. The upper end of the cup body 1c is inserted into the cup cover 1b, and the cup cover 1b and the cup body 1c are locked through the hasps 8. The base 1a is provided with internal threads, the bottom of the cup body 1c is provided with external threads, and the base 1a is in threaded connection with the cup body 1 c.

The air inlet 2 is arranged on the base 1a, the bottom of the cup body 1c is provided with a fluidization plate 6, air holes are distributed on the surface of the fluidization plate 6, a distance exists between the fluidization plate and the inner bottom surface of the base 1a, the fluidization plate and the base 1a form a fluidization cavity 7, and the air inlet 2 is communicated to the inner bottom surface of the base 1 a.

The gas is introduced into the cup body 1 through the gas inlet 2 and reaches the fluidization cavity 7 in advance, and after the gas is uniformly buffered in the fluidization cavity 7, the gas is divided into soft gas flow through the fluidization plate 6 to act on the powder coating so as to drive the powder coating to be in a floating fluidization state. Specifically, dense micropores are distributed on the fluidization plate 6.

The powder outlet 3 is arranged on the cup cover 1 b. The atomized powder coating can flow to the powder outlet 3 under the action of the air pressure in the cup body 1. Specifically, the cup cover 1b is provided with a powder outlet port 22, the powder outlet port 22 is communicated with the powder outlet port 3, and the powder outlet port 22 is connected with the powder conveying pipe.

The wall surface of the cup body 1 is provided with at least one air injection hole 4. Preferably, the wall surface of the cup body 1 is symmetrically provided with two air injection holes 4, and the two air injection holes 4 are arranged back to back. The axial direction of the air injection hole 4 is tangential to the wall surface of the cup body 1. The gas introduced from the gas injection holes 4 can be surely moved along the wall surface of the cup body 1 to form a swirl flow. Specifically, the air injection holes 4 are positioned in a plane perpendicular to the axial direction of the cup body 1. Namely, the angle of the air injection hole 4 is tangential to the cross section of the inner wall of the cup body 1 in the right transverse direction. If the cup body 1 is placed on a horizontal plane, the air injection holes 4 are also located in a horizontal plane.

The cup cover 1b is opened, a proper amount of powder coating is added into the cup body 1c, then the cup cover 1b is covered, and the cup cover 1b is locked and sealed by the hasp 8. When the air inlet 2 is connected with compressed air, the fluidizing chamber 7 is filled with the compressed air, the compressed air flows into the cup body 1 from the bottom of the cup body 1 after passing through a plurality of dense micropores on the fluidizing plate 6, and the powder coating starts to be in a fluidized suspension state in the cup body 1 under the blowing and jetting of the soft air flow. At the moment, compressed air is introduced into the air injection holes 4 of the cup body 1, high-speed compressed air jet flow is ejected tangentially along the inner wall of the cup body 1 from the air injection holes 4, rotational flow is generated in the cup body 1, and the powder coating is fully atomized in the cup body 1. The powder coating after full atomization can move upwards and flow to the powder outlet 3 on the cup cover 1 b. The powder coating led out from the powder outlet 3 is input into the electrostatic spray gun through the powder conveying pipe so as to realize the spraying of the powder coating.

In order to introduce gas into the gas injection holes 4 and the gas inlet 2, the gas generation device can be connected with the gas injection holes 4 and the gas inlet 2 through hoses, which are also shown in the attached drawings of the specification.

The other contents of the second embodiment are the same as those of the first embodiment.

In the third embodiment, as shown in fig. 5 and 6, the other contents of the third embodiment are the same as those of the second embodiment, and the difference is that: the included angle between the air injection holes 4 and the plane vertical to the axial direction of the cup body 1 is an acute angle. Specifically, the gas injection holes 4 are inclined toward the side of the fluidization plate 6. The air flow sprayed out from the air injection holes is blown to the fluidized powder, so that better powder coating atomization effect can be achieved. Specifically, the inclination angle of the air injection hole 4 and the section of the inner wall of the cup body 1 can be set according to the designed powder loading amount of the cup body 1, so that more ideal rotation and disturbance effects on the powder coating in the cup body 1 are achieved.

Fourth embodiment, as shown in fig. 7 to 10, the cup body 1 is provided with a vent pipe 9, the vent pipe 9 penetrates the cup body 1, and gas is introduced into the cup body 1 through the vent pipe 9. The surface of the vent pipe 9 is provided with air injection holes 4, and the axial direction of the air injection holes 4 is tangent to the circumferential surface of the inner wall of the cup body 1.

Specifically, a through hole is formed in the cup body 1c of the cup body 1, and a first sealing ring 11 is arranged between the vent pipe 9 and the through hole.

Specifically, one end of the vent pipe 9 extending into the cup body 1 is a closed blind end, the wall of the vent pipe 9 close to the inner wall part of the cup body 1 in the cup body 1 is provided with a gas orifice 4 penetrating through the wall of the vent pipe 9, and the gas orifice 4 and the inner wall part of the cup body 1 are in a tangent direction.

The vent tube 9 is rotatable about its axis. And then the angle of the air injection holes 4 is adjusted to realize that the compressed air is injected into the rotary airflow generated in the cup body 1 through the air injection holes 4 to achieve a better powder coating atomization effect. Preferably, the vent pipe 9 vertically penetrates through the wall surface of the cup body 1. The part of the vent pipe 9, which is positioned outside the cup body 1, is provided with a vent interface which is used for communicating compressed air.

The working principle of the powder coating spraying device is the same as that of the first embodiment, the powder coating is disturbed by the aid of jet air flow, air pressure is generated in the cup body 1 at the same time, and accordingly the atomized powder coating is pushed to pass through the powder outlet 3 and then is sprayed out through the powder conveying pipe and the powder electrostatic spray gun, and the purpose of spraying the powder coating is achieved.

The rest of the fourth embodiment is the same as the first or second embodiment.

In the fifth embodiment, as shown in fig. 11 to 13, a sleeve 12 is sleeved outside the cup body 1, an annular cavity 13 is formed by the inner wall surface of the sleeve 12 and the outer surface of the cup body 1, the sleeve 12 is provided with an air inlet 14, and compressed air is introduced into the annular cavity through the air inlet 14. Compressed air is guided into the annular cavity 13 through the air inlet port 14 and then guided into the cup body 1 through the air injection holes 4 on the surface of the cup body 1 to form rotational flow.

Specifically, the outer peripheral surface of the cup body 1 is provided with an annular boss 15, the upper end of the pipe sleeve is provided with a pressing ring 16, the pressing ring 16 is pressed down on the annular boss 15, and a sealing gasket 17 is arranged between the pressing ring 16 and the annular boss 15. The surface of the base 1a is provided with external threads, the lower end of the pipe sleeve is provided with internal threads, and the pipe sleeve is in threaded connection with the base 1 a.

Further, a seal ring groove is arranged below the external thread, and a second seal ring 18 is arranged in the seal ring groove. When the sleeve 12 is screwed with the cup body 1 and screwed tightly, the second sealing ring 18 is pressed by the inner wall of the sleeve 12.

At this point, the sleeve 12 and the cup body 1 are connected in a sealing manner, and the gas in the annular cavity 13 can be discharged only from the gas injection holes 4. When the air inlet port 14 is connected with the compressed air, the compressed air fills the annular cavity 13, flows to the air injection holes 4, and starts to provide rotating air flow into the cup body 1 through the air injection holes 4. At the moment, the rotational flow atomizer starts to work, and the powder coating atomization effect which is the same as that of the powder coating atomization effect of the compressed air directly connected into the air injection holes 4 can be achieved.

The other contents of the fifth embodiment are the same as those of the first embodiment, the second embodiment or the third embodiment.

Example six, as shown in fig. 14: the rest of the sixth embodiment is the same as the fifth embodiment, except that: the upper end of sleeve 12 is equipped with bulge loop 19, bulge loop 19 inner wall is equipped with the sealing washer slot, the sealing washer slot in be equipped with third sealing washer 20. The convex ring 19 acts on the outer surface of the cup body 1, and the third sealing ring 20 is deformed under pressure. The cup body 1 and the upper end of the sleeve 12 are sealed, so that a good sealing effect can be achieved.

The working principle of the sixth embodiment is the same as that of the fifth embodiment.

Seventh embodiment, as shown in fig. 15 to 17, a powder outlet tube 21 is disposed in the cup body 1, and the powder outlet 3 is disposed on a tube wall of the powder outlet tube 21. The powder outlet port 22 is arranged on the base 1a, and the powder outlet pipe 21 is partially inserted into the base 1a and communicated with the powder outlet port 22. Namely, the powder coating in the cup body 1 enters the powder outlet pipe 21 from the powder outlet 3 and then reaches the powder outlet port 22 through the powder outlet pipe 21. The powder outlet port 22 is connected with the electrostatic spray gun through a powder conveying pipe.

The powder outlet pipe 21 is provided with an opening at one end in the cup body 1, and the opening at one end of the powder outlet pipe 21 forms the powder outlet 3.

Or, one end of the powder outlet pipe 21 in the cup body 1 is a blind end, and the powder outlet 3 is located on the wall surface of the powder outlet pipe 21. Preferably, the powder outlet pipe 21 may be provided with a plurality of powder outlets 3 on the wall surface. Specifically, the lower end of the powder outlet pipe 21 penetrates through the fluidization plate 6, and the lower end of the powder outlet pipe 21 is in threaded connection with the base 1 a.

The remainder of the seventh embodiment may be the same as any of the above-described embodiments. In the drawings in the specification of the present application, two structures are specifically given. The rest of the description of the seventh embodiment is the same as the fourth embodiment, as shown in fig. 15 and 6. Or the other contents of the seventh embodiment are the same as those of the fifth embodiment, as shown in fig. 17.

The present application has been described in detail above, and specific examples thereof are used herein to explain the principles and implementations of the present application, which are presented solely to aid in understanding the present application and its core concepts. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. The utility model provides a be applied to electrostatic spray gun's powder storage cup, its characterized in that is including storing powder coating's cup and whirl atomizer, the cup on be provided with the air inlet that is used for leading-in gas in to the cup, the suspension of powder coating in the leading-in gas drive cup of air inlet, the cup is provided with the powder outlet that is used for supplying powder coating to electrostatic spray gun, whirl atomizer include gas generating device and set up the fumarole at the cup wall, in the gaseous leading-in cup of fumarole that gas generating device produced, remove along the cup wall from the leading-in gas of fumarole and produce the whirl.

2. The powder storage cup for an electrostatic spray gun according to claim 1, wherein the powder outlet is connected to the electrostatic spray gun through a powder delivery pipe; the powder conveying pipe is a hose.

3. A powder storage cup for an electrostatic spray gun according to claim 1, wherein the air inlet is located at the bottom of the cup body; the powder outlet is positioned at the upper part of the cup body.

4. The powder storage cup applied to the electrostatic spray gun of claim 1 or 3, wherein the cup body comprises a base, a cup cover and a cup body, the cup body is provided with a circular inner wall, and the base, the cup body and the cup cover are connected to form a cavity for containing powder coating; the bottom of the cup body is provided with a fluidization plate, the surface of the fluidization plate is provided with air holes, a space exists between the fluidization plate and the inner bottom surface of the base, the fluidization plate and the base form a fluidization cavity, and the air inlet is communicated to the inner bottom surface of the base; the powder outlet is arranged on the cup cover.

5. The powder storage cup for an electrostatic spray gun of claim 1, wherein the cup body wall is provided with at least one air injection hole; the axial direction of the air injection hole is tangential to the wall surface of the cup body.

6. The powder storage cup as claimed in claim 5, wherein the air injection hole is located in a plane perpendicular to an axial direction of the cup body.

7. The powder storage cup of claim 5, wherein the air injection hole is formed at an acute angle with respect to a plane perpendicular to the axial direction of the cup body; the air injection holes are inclined towards the side of the fluidization plate.

8. The powder storage cup for an electrostatic spray gun according to claim 1, wherein the cup body is provided with a vent pipe, the vent pipe penetrates through a wall surface of the cup body, and gas is introduced into the cup body through the vent pipe; the wall of the vent pipe is provided with a gas orifice, and the axial direction of the gas orifice is tangential to the circumferential surface of the inner wall of the cup body; the vent pipe can rotate around the axis thereof.

9. The powder storage cup for the electrostatic spray gun according to claim 4, wherein a sleeve is sleeved outside the cup body, an annular cavity is formed by the inner wall surface of the sleeve and the outer surface of the cup body, the sleeve is provided with an air inlet port, and compressed air is introduced into the annular cavity through the air inlet port.

10. The powder storage cup for an electrostatic spray gun as claimed in claim 9, wherein the base has an external thread formed on a surface thereof, and an internal thread formed at a lower end thereof, the sleeve being threadedly coupled to the base; a sealing ring groove is arranged below the external thread, and a second sealing ring is arranged in the sealing ring groove; when the sleeve is screwed with the cup body and screwed tightly, the second sealing ring is pressed tightly by the inner wall of the sleeve.

11. The powder storage cup for an electrostatic spray gun according to claim 10, wherein an annular boss is provided on the outer circumferential surface of the cup body, a pressing ring is provided at the upper end of the pipe sleeve, the pressing ring presses down on the annular boss, and a sealing gasket is provided between the pressing ring and the annular boss.

12. The powder storage cup for an electrostatic spray gun of claim 10, wherein the upper end of the sleeve is provided with a protruding ring, the inner wall of the protruding ring is provided with a sealing ring groove, and a third sealing ring is arranged in the sealing ring groove; the bulge loop act on the cup surface, and third sealing washer pressurized deformation.

13. The powder storage cup for the electrostatic spray gun according to claim 1 or 9, wherein a powder outlet pipe is arranged in the cup body, and the powder outlet is arranged on the wall of the powder outlet pipe; the powder outlet port is arranged on the base, and the powder outlet pipe is partially inserted into the base and communicated with the powder outlet port.