CN210545783U

CN210545783U - Low-pressure high-atomization high-speed rotary cup sprayer

Info

Publication number: CN210545783U
Application number: CN201920858064.3U
Authority: CN
Inventors: 杨建伟
Original assignee: Dongguan Shangduo Automation Spraying Equipment Co ltd
Current assignee: Dongguan Shangduo Automation Spraying Equipment Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-05-19
Anticipated expiration: 2029-06-06

Abstract

The utility model relates to the technical field of spraying devices, in particular to a high-speed rotary cup sprayer with low air pressure and high atomization, which comprises a base, an atomization cover, an oil rod, a rotary rod, a magnet ring, a graphite shaft sleeve, an atomization cover sealing sleeve and an atomization cup head, wherein the atomization cover is provided with a plurality of atomization inclined holes, the atomization cup head comprises a conveying part and an paint outlet part, the paint outlet part is provided with a hollow cavity, a plurality of rectangular oil outlet holes are all communicated with the hollow cavity, the number of the atomization inclined holes is 65-75, the aperture of each atomization inclined hole is 0.6mm, the paint outlet part is provided with a plurality of buffer holes, the paint outlet part is sleeved with a guide sleeve, a liquid discharge gap is arranged between the guide sleeve and the paint outlet part, and the plurality of buffer holes are all communicated with the liquid discharge gap; the utility model discloses can reduce the operational aspect of discontinuity, improve the atomization effect to paint, reduce the bad condition of spraying, reduce the probability of jam, and paint can spray on the product softly, the phenomenon of paint bounce-back can not appear, has saved the quantity of paint.

Description

Low-pressure high-atomization high-speed rotary cup sprayer

Technical Field

The utility model belongs to the technical field of spraying device's technique and specifically relates to indicate a high-speed cup sprayer that revolves of low atmospheric pressure high atomizing.

Background

With the understanding and treatment of environmental protection in countries around the world, particularly China, the paint technology gradually transits from the use of oil paint types to the use of paint types with less harm to the environment in recent decades. Along with the improvement of aesthetic requirements of human beings on the surface of products, the technology of the coating machine in the surface treatment coating industry is also improved, and a rotary cup coating device is produced. The rotary cup sprayer has been one of the tools with higher painting rates in spray tools. However, the impact force of the paint sprayed by the existing rotary cup sprayer is large, the paint is easy to rebound when sprayed on the surface of a product, the paint is not easy to attach to the surface of the product, the loss of the paint is large, and the paint spraying cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses problem to prior art provides a high-speed cup sprayer that revolves of low atmospheric pressure high atomizing, and atomization effect is good, and paint can be sprayed on the product softly, can not appear the phenomenon of paint bounce-back, has saved the quantity of paint, the cost is reduced.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a high-speed rotary cup sprayer with low air pressure and high atomization, which comprises a base and an atomization cover connected with the base, wherein an oil rod, a rotary rod, a magnet ring, a graphite shaft sleeve and an atomization cover sealing sleeve are arranged in the atomization cover; the rotary rod is sleeved outside the oil rod, the oil outlet end of the oil rod extends out of the atomizing cover and is connected with the atomizing cup head, the magnet ring and the graphite shaft sleeve are sleeved outside the rotary rod, the atomizing cover sealing sleeve is sleeved outside the graphite shaft sleeve, the atomizing cover is sleeved outside the atomizing cover sealing sleeve, an atomizing cavity is formed between the atomizing cover sealing sleeve and the atomizing cover in a sealing mode, a plurality of atomizing inclined holes are annularly arranged at one end, close to the atomizing cup head, of the atomizing cover, the plurality of atomizing inclined holes are inclined towards the direction of the atomizing cup head, and the atomizing inclined holes are communicated with the atomizing cavity; the base is provided with an air-flotation compressed air hole, an atomization air hole and a rotation air hole, an air-flotation cavity is arranged between the graphite shaft sleeve and the rotation rod, the air-flotation compressed air hole is communicated with the air-flotation cavity, the atomization air hole is communicated with the atomization cavity, the rotation rod is provided with a rotation impeller, the rotation impeller is annularly provided with a plurality of impeller pushing grooves, and the rotation air hole is communicated with the impeller pushing grooves; the atomizing cup head comprises a conveying part for conveying paint and a paint outlet part arranged at the paint outlet end of the conveying part and used for spraying the paint, the conveying part is hollow and cylindrical, a hollow cavity is arranged in the middle of the paint outlet part, a plurality of rectangular oil outlet holes are annularly arranged around the hollow cavity and are communicated with the hollow cavity, the number of atomizing inclined holes is 65-75, the aperture of each atomizing inclined hole is 0.6mm, a plurality of buffer holes for discharging the redundant paint in the conveying part are circumferentially arranged on the side wall of the paint outlet part, an inner hollow guide sleeve is sleeved on the outer side of the paint outlet part and covers the buffer holes, the conveying part extends out of the guide sleeve and is communicated with the oil outlet end of an oil rod, the oil outlet end of the oil rod is communicated with the hollow cavity through the conveying part, and a liquid discharge gap is arranged between the guide sleeve and the paint outlet part, the plurality of buffer holes are communicated with the liquid discharge gap.

Further, the outlet ends of the plurality of atomizing inclined holes face to the center of the atomizing cup head.

Furthermore, well cavity still is provided with the fender oil board that is used for preventing paint from flowing backward, the middle part of fender oil board is provided with the anti-flowing backward inclined plane of contradicting with the oil outlet end of beam hanger, the anti-flowing backward inclined plane is located the cavity intracavity, the anti-flowing backward inclined plane is the cone, and a plurality of rectangle oil outlet surround the central line setting of fender oil board.

Furthermore, four air-floating air holes are annularly formed in the top end of the graphite shaft sleeve at equal intervals; a plurality of annular airflow holes are annularly formed in the outer wall ring of the graphite shaft sleeve at equal intervals; the air flotation air hole and the annular airflow hole are communicated with the air flotation cavity.

Further, the base still is provided with the inlet port, the inlet port communicates with the oil feed end of fuel rod.

Further, the hollow cavity is cylindrical.

Further, the outer surface of the atomizing cup head is coated with a non-stick pan layer.

Furthermore, a plurality of fan-shaped elastic blocking pieces are arranged on the inner wall of the buffer hole and are concentrically arranged; when the elastic blocking piece is in a natural state, each buffer hole is in a closed state; the flowing direction of the paint in each buffer hole is crossed with the flowing direction of the paint in the conveying part.

Further, go out lacquer portion including being connected and being the play liquid end of transport portion horn-shaped with lead the lacquer cover and set up leading the lacquer shell of lacquer cover inside, it is cylindricly to go out the lacquer shell, well cavity sets up in the middle part of going out the lacquer shell, and the lateral wall of a lacquer shell is evenly located to a plurality of rectangle oil outlet ring, go out the lacquer shell and be close to the play liquid end of transport portion and offer the feed liquor hole with transport portion intercommunication, the feed liquor hole communicates with a plurality of rectangle oil outlet via well cavity respectively.

Furthermore, a conical flow guide block is arranged on the bottom wall of the hollow cavity, the flow guide block and the liquid inlet hole are coaxially arranged, and the flow guide block is used for guiding paint flowing out of the liquid inlet hole to flow to the rectangular oil outlet hole; one end of the paint guide cover, which is far away from the conveying part, is bent inwards; the guide sleeve is in threaded connection with the conveying part.

The utility model has the advantages that:

the utility model has simple structure and reasonable design, simultaneously, the magnetic attraction is provided for the suspended rotary rod through the magnet ring, and the control is carried out on the charged compressed air, so that the magnetic attraction is consistent with the suspension force in the air flotation cavity, the suspension of the rotary rod in the graphite shaft sleeve is ensured to be stabilized, the continuous rotation of the rotary rod is ensured, and the discontinuous working condition is reduced; in addition, atomized air is input into the atomized air hole and enters the atomization cavity, the atomized air is sprayed out from the atomization inclined hole towards the atomization cup head, paint thrown out by the atomization cup head in a rotating mode is atomized, the probability of blockage of the atomization cup head is effectively reduced by the hollow cavity and the plurality of rectangular oil outlet holes, the service life is prolonged, and then the maintenance cost is reduced; simultaneously, because atomizing inclined hole ring establishes on the atomizing cover, atomizing inclined hole spun atomizing air alternately hits for the rotatory paint of throwing away of atomizing cup head alternately hits under atomizing air's effect, improves the utility model discloses to the atomization effect of paint, and then improve the utility model discloses a spraying effect reduces the bad condition of spraying. The quantity of atomizing inclined hole is 65-75, and the aperture of every atomizing inclined hole is 0.6mm, specifically speaking, the quantity of atomizing inclined hole is 72, and 72 atomizing inclined hole annular array sets up, and the contained angle between two adjacent atomizing inclined holes is 5, and 72 atomizing inclined holes make the air current taper with quantitative compressed gas reposition of redundant personnel, and then make atomizing cup better to the atomization effect of paint, and the paint spraying is soft on the product, is favorable to paint attached to the surface of product, avoided leading to paint spraying on the product and bounce-back because atmospheric pressure is too big, and then reduced the loss volume of paint, reach the purpose of economizing on lacquer, reduced the cost of spraying paint. Wherein, under the same condition, the same atomization effect can be achieved only by low air pressure.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the exploded structure of the present invention.

Fig. 3 is a schematic structural diagram of the rotary rod of the present invention.

Fig. 4 is a schematic structural view of the graphite shaft sleeve of the present invention.

Fig. 5 is a schematic structural view of the atomizing cup head of the present invention.

Fig. 6 is a schematic structural view of another viewing angle of the atomizing cup head of the present invention;

fig. 7 is a sectional view of the atomizing cup of the present invention;

fig. 8 is a schematic structural view of the elastic blocking piece in the buffer hole of the present invention.

The reference numerals in fig. 1 to 8 include:

1-base 2-atomizing cover 3-oil rod

4-5 rotary rods-6 magnetic rings-graphite shaft sleeve

7-atomizing cover sealing sleeve 8-atomizing cup head 80-drainage block

81-hollow cavity 82-rectangular oil outlet 83-conveying part

84-buffer hole 85-elastic baffle 86-paint outlet part

87-paint guide cover 88-paint outlet shell 89-liquid inlet hole

891-guide sleeve 9-atomization inclined hole 10-air-flotation compressed air hole

11-atomizing air hole 12-rotating air hole 13-rotating impeller

14-impeller pushing groove 15-oil baffle plate 16-air floatation air hole

17-annular airflow hole 18-oil inlet hole.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, a low-pressure high-atomization high-speed rotary cup sprayer comprises a base 1 and an atomization hood 2 connected with the base 1, wherein an oil rod 3, a rotary rod 4, a magnet ring 5, a graphite shaft sleeve 6 and an atomization hood sealing sleeve 7 are installed in the atomization hood 2; the rotary rod 4 is sleeved outside the oil rod 3, the oil outlet end of the oil rod 3 extends out of the atomizing cover 2 and is connected with an atomizing cup head 8, the magnet ring 5 and the graphite shaft sleeve 6 are sleeved outside the rotary rod 4, the atomizing cover sealing sleeve 7 is sleeved outside the graphite shaft sleeve 6, the atomizing cover 2 is sleeved outside the atomizing cover sealing sleeve 7, an atomizing cavity is formed between the atomizing cover sealing sleeve 7 and the atomizing cover 2 in a sealing mode, a plurality of atomizing inclined holes 9 are annularly arranged at one end, close to the atomizing cup head 8, of the atomizing cover 2, the plurality of atomizing inclined holes 9 are inclined towards the atomizing cup head 8, and the atomizing inclined holes 9 are communicated with the atomizing cavity; the base 1 is provided with an air-flotation compressed air hole 10, an atomization air hole 11 and a rotation air hole 12, an air-flotation cavity is arranged between the graphite shaft sleeve 6 and the rotation rod 4, the air-flotation compressed air hole 10 is communicated with the air-flotation cavity, the atomization air hole 11 is communicated with the atomization cavity, the rotation rod 4 is provided with a rotation impeller 13, the rotation impeller 13 is annularly provided with a plurality of impeller pushing grooves 14, and the rotation air hole 12 is communicated with the impeller pushing grooves 14; the atomizing cup head 8 comprises a conveying part 83 for conveying paint and a paint outlet part 86 arranged at a liquid outlet end of the conveying part 83 and used for spraying paint, the conveying part 83 is hollow and cylindrical, a hollow cavity 81 is arranged in the middle of the paint outlet part 86, a plurality of rectangular oil outlet holes 82 are annularly arranged around the hollow cavity 81, the rectangular oil outlet holes 82 are communicated with the hollow cavity 81, the number of the atomizing inclined holes 9 is 65-75, the aperture of each atomizing inclined hole 9 is 0.6mm, a plurality of buffer holes 84 for discharging redundant paint in the conveying part 83 are circumferentially arranged on the side wall of the paint outlet part 86, an inner hollow guide sleeve 891 is sleeved outside the paint outlet part 86, the guide sleeve 891 covers the buffer holes 84, the conveying part 83 extends out of the guide sleeve 891 and is communicated with the oil outlet end of an oil rod, the oil outlet end of the oil rod is communicated with the hollow cavity 81 through the conveying part 83, a liquid drainage gap is arranged between the guide sleeve 891 and the paint outlet part 86, and the plurality of buffer holes 84 are communicated with the liquid drainage gap.

Specifically, the utility model discloses during operation, input compressed air earlier through air supporting compressed air hole 10 of base 1 and enter into the air supporting intracavity, through filling compressed air in a large number, make the air supporting intracavity produce powerful atmospheric pressure and make rotary rod 4 suspend in graphite axle sleeve 6, simultaneously, utilize magnet ring 5 to have a magnetic attraction to the rotary rod 4 that suspends, through controlling the compressed air that fills, make magnetic attraction unanimous with the suspension power in the air supporting intracavity, guarantee the suspension of rotary rod 4 stable in graphite axle sleeve 6, guarantee the continuous rotation of rotary rod 4, reduce the operating condition of discontinuity; in addition, the rotary air is charged into the rotary air hole 12 and enters the impeller pushing groove 14 to push the rotary impeller 13 to rotate, and then the rotary rod 4 is pushed to rotate to drive the oil rod 3 to rotate, so that the paint flowing out of the oil outlet end of the oil rod 3 is thrown out through the rotation of the atomizing cup head 8; furthermore, atomized air is input into the atomized air hole 11, and enters the atomization cavity, and is sprayed out from the atomization inclined hole 9 towards the atomization cup head 8, so that paint thrown out by the atomization cup head 8 in a rotating manner is atomized, and meanwhile, because the atomization inclined hole 9 is annularly arranged on the atomization cover 2, the atomized air sprayed out from the atomization inclined hole 9 is collided in a cross manner, so that the paint thrown out by the atomization cup head 8 in a rotating manner is collided in a cross manner under the action of the atomized air, the atomization effect of the paint is improved, the spraying effect of the paint is further improved, and the bad spraying condition is reduced; specifically, after paint passes into the atomizing cup 8, the paint flows through the delivery portion 83 and is then sprayed from the paint outlet portion 86. When the paint outlet 86 is blocked, paint can flow out from the buffer hole 84 on the conveying part 83, and the atomizing cup head 8 is prevented from cracking and being damaged due to overlarge internal pressure of the atomizing cup head 8. Meanwhile, the outer guide sleeve 891 of the conveying portion 83 has a guiding function, so that the paint sprayed from the cushion hole 84 can flow along the inner wall of the guide sleeve 891 toward the paint outlet portion 86, and the paint is prevented from splashing toward other directions. In addition, the hollow cavity 81 and the plurality of rectangular oil outlet holes 82 are arranged, so that the probability of blockage of the atomizing cup head 8 is effectively reduced, the service life is prolonged, and the maintenance cost is reduced; the quantity of atomizing inclined hole 9 is 65-75, and the aperture of every atomizing inclined hole 9 is 0.6mm, specifically speaking, the quantity of atomizing inclined hole 9 is 72, and 72 atomizing inclined hole 9 ring array sets up, and the contained angle between two adjacent atomizing inclined holes 9 is 5, and 72 atomizing inclined holes 9 make the air current thin with quantitative compressed gas reposition of redundant personnel, and then make atomizing cup head 8 better to the atomization effect of paint, and the paint spraying is soft on the product, is favorable to the paint to adhere to the surface at the product, has avoided leading to paint spraying and rebounding on the product because atmospheric pressure is too big, and then has reduced the loss volume of paint, reaches the purpose of province lacquer, has reduced the cost of spraying paint. Wherein, under the same condition, the same atomization effect can be achieved only by low air pressure.

Preferably, the rotating rod 4 is made of metallic iron.

Preferably, the outlet ends of a plurality of the atomizing inclined holes 9 are all towards the center of the atomizing cup head 8. Specifically, the exit end of atomizing inclined hole 9 all is located towards the center of atomizing cup head 8, can guarantee from atomizing inclined hole 9 spun atomizing air can intercrossing collision, further improves the atomization effect to paint.

This embodiment a high-speed cup sprayer that revolves of low atmospheric pressure high atomizing, well cavity 81 still is provided with the fender oil board 15 that is used for preventing paint from flowing backward, the middle part of fender oil board 15 is provided with the anti-flowing backward inclined plane of contradicting with the play oil end of oil pole 3, the anti-flowing backward inclined plane is located well cavity 81, the anti-flowing backward inclined plane is the cone, and a plurality of rectangle oil outlet 82 encircle the central line setting of fender oil board 15. Specifically, the inclined plane of preventing flowing backward of fender 15 can delay the speed when paint flows backward for the paint that flows backward can not flow backward at once the utility model discloses in, guarantee that rotary rod 4 can have the rotatory paint of will flowing backward of sufficient time to throw away.

In the low-pressure high-atomization high-speed rotary cup sprayer of the embodiment, four air-floating air holes 16 are annularly formed at equal intervals at the top end of the graphite shaft sleeve 6; a plurality of annular airflow holes 17 are annularly arranged on the outer wall ring of the graphite shaft sleeve 6 at equal intervals; the air flotation air holes 16 and the annular airflow holes 17 are communicated with the air flotation cavity. Specifically, the magnet ring 5 is located above the graphite shaft sleeve 6, and the input air floatation enters the air floatation cavity and flows to the air floatation air holes 16, so that air buoyancy is generated on the air floatation air holes 16, and the rotating rod 4 is suspended in the graphite shaft sleeve 6 under the action of the magnetic attraction of the magnet ring 5; meanwhile, the compressed air enters the annular airflow holes 17 by utilizing the effect of annularly arranging the annular airflow holes 17, the annularly arranged annular airflow holes 17 form an annular airflow ring to stabilize the rotating rod 4 in the graphite shaft sleeve 6, the inclination of the rotating rod 4 during working is reduced, the stable working of the rotating rod 4 is ensured, and the discontinuous working condition is reduced.

In the low-pressure high-atomization high-speed rotary cup sprayer of the embodiment, the base 1 is further provided with an oil inlet hole 18, and the oil inlet hole 18 is communicated with the oil inlet end of the oil rod 3. Specifically, the paint enters from the oil inlet hole 18, and flows into the oil rod 3 at the oil inlet end of the oil rod 3.

In this embodiment, the hollow cavity 81 is cylindrical, so that the rectangular oil outlets 82 are uniformly distributed on the peripheral surface of the hollow cavity 81.

In this embodiment, the outer surface of the atomizing cup 8 is coated with a non-stick pan layer, and the non-stick pan layer is made of non-stick pan coating, so that the paint is prevented from adhering to the atomizing cup 8, and the probability of blocking the atomizing cup 8 is further reduced.

In order to avoid that a large amount of paint in the atomizing cup head 8 is sprayed out of the cushion holes 84 during spraying, four fan-shaped elastic blocking pieces 85 are arranged on the inner wall of each cushion hole 84, the elastic blocking pieces 85 are made of rubber materials, and the four elastic blocking pieces 85 are concentrically arranged; when the elastic blocking piece 85 is in a natural state, each buffer hole 84 is in a closed state. When the internal pressure of the atomizing cup head 8 is too high, the paint can be sprayed out from the cushion hole 84 by opening the elastic blocking piece 85; specifically, the flow direction of the paint in each buffer hole 84 is arranged to intersect with the flow direction of the paint in the conveying portion 83, and the buffer holes 84 can enable the paint flowing in the conveying portion 83 to have a large turning direction when flowing out of the buffer holes 84, so that the paint is not easily sprayed out of the buffer holes 84 when the pressure in the atomizing cup head 8 is uniform.

Preferably, in order to clean the buffer hole 84 conveniently, the smaller opening end of the guide sleeve 891 is provided with a thread to be connected with the conveying part 83, so that the guide sleeve 891 can be detached from the conveying part 83 conveniently.

In this embodiment, go out lacquer portion 86 including be connected with the play liquid end of conveying part 83 and be the lacquer cover 87 that leads of loudspeaker form and set up leading the inside play lacquer shell 88 of lacquer cover 87, it is cylindricly to go out lacquer shell 88, well cavity 81 sets up in the middle part of going out lacquer shell 88, and the lateral wall of going out lacquer shell 88 is located to the even ring of a plurality of rectangle oil outlet 82, go out lacquer shell 88 and be close to the play liquid end of conveying part 83 and offer the feed liquor hole 89 with conveying part 83 intercommunication, feed liquor hole 89 communicates with a plurality of rectangle oil outlet 82 respectively via well cavity 81. The paint in the conveying part 83 enters the paint outlet shell 88 from the liquid inlet hole 89, then the paint in the paint outlet shell 88 is sprayed out from the rectangular oil outlet hole 82 onto the inner wall of the paint guide cover 87, and then the paint is sprayed to the front of the atomizing cup head 8 along the inner wall of the paint guide cover 87 under the guiding action of the paint guide cover 87.

In this embodiment, a conical flow guide block 80 is disposed on the bottom wall of the hollow cavity 81, the flow guide block 80 is disposed coaxially with the liquid inlet hole 89, and the flow guide block 80 is used for guiding the paint flowing out from the liquid inlet hole 89 to flow to the rectangular oil outlet hole 82; the setting of drainage piece 80 can guide the paint flow direction rectangle oil outlet 82 that gets into out lacquer shell 88 from feed liquor hole 89, avoids paint to strike out lacquer shell 88's bottom surface after getting into out lacquer shell 88, makes the speed of paint slow down, reduces the kinetic energy of paint, simultaneously, still plays the effect of preventing flowing backward.

Preferably, in order to avoid the paint sprayed out from the paint guide cover 87 from being too dispersed, one end of the paint guide cover 87 far away from the conveying part 83 is bent inwards, so that the color of the paint edge sprayed on the product can be more concentrated, and the spot is not easy to appear.

The guide sleeve 891 is in threaded connection with the conveying part 83, and is convenient to disassemble, assemble and maintain.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a high-speed cup sprayer that revolves of low atmospheric pressure high atomizing which characterized in that: the atomizing device comprises a base and an atomizing cover connected with the base, wherein an oil rod, a rotating rod, a magnet ring, a graphite shaft sleeve and an atomizing cover sealing sleeve are arranged in the atomizing cover; the rotary rod is sleeved outside the oil rod, the oil outlet end of the oil rod extends out of the atomizing cover and is connected with the atomizing cup head, the magnet ring and the graphite shaft sleeve are sleeved outside the rotary rod, the atomizing cover sealing sleeve is sleeved outside the graphite shaft sleeve, the atomizing cover is sleeved outside the atomizing cover sealing sleeve, an atomizing cavity is formed between the atomizing cover sealing sleeve and the atomizing cover in a sealing mode, a plurality of atomizing inclined holes are annularly arranged at one end, close to the atomizing cup head, of the atomizing cover, the plurality of atomizing inclined holes are inclined towards the direction of the atomizing cup head, and the atomizing inclined holes are communicated with the atomizing cavity; the base is provided with an air-flotation compressed air hole, an atomization air hole and a rotation air hole, an air-flotation cavity is arranged between the graphite shaft sleeve and the rotation rod, the air-flotation compressed air hole is communicated with the air-flotation cavity, the atomization air hole is communicated with the atomization cavity, the rotation rod is provided with a rotation impeller, the rotation impeller is annularly provided with a plurality of impeller pushing grooves, and the rotation air hole is communicated with the impeller pushing grooves; the atomizing cup head comprises a conveying part for conveying paint and a paint outlet part arranged at the paint outlet end of the conveying part and used for spraying the paint, the conveying part is hollow and cylindrical, a hollow cavity is arranged in the middle of the paint outlet part, a plurality of rectangular oil outlet holes are annularly arranged around the hollow cavity and are communicated with the hollow cavity, the number of atomizing inclined holes is 65-75, the aperture of each atomizing inclined hole is 0.6mm, a plurality of buffer holes for discharging the redundant paint in the conveying part are circumferentially arranged on the side wall of the paint outlet part, an inner hollow guide sleeve is sleeved on the outer side of the paint outlet part and covers the buffer holes, the conveying part extends out of the guide sleeve and is communicated with the oil outlet end of an oil rod, the oil outlet end of the oil rod is communicated with the hollow cavity through the conveying part, and a liquid discharge gap is arranged between the guide sleeve and the paint outlet part, the plurality of buffer holes are communicated with the liquid discharge gap.

2. A low pressure, high atomization, high speed bell cup sprayer according to claim 1 wherein: the outlet ends of the plurality of atomization inclined holes face the center of the atomization cup head.

3. A low pressure, high atomization, high speed bell cup sprayer according to claim 1 wherein: the hollow cavity is further provided with an oil baffle plate for preventing paint from flowing backwards, a backflow preventing inclined plane which is abutted against the oil outlet end of the oil rod is arranged in the middle of the oil baffle plate, the backflow preventing inclined plane is located in the hollow cavity and is a cone, and the rectangular oil outlet holes are arranged around the central line of the oil baffle plate.

4. A low pressure, high atomization, high speed bell cup sprayer according to claim 1 wherein: four air-floating air holes are annularly formed in the top end of the graphite shaft sleeve at equal intervals; a plurality of annular airflow holes are annularly formed in the outer wall ring of the graphite shaft sleeve at equal intervals; the air flotation air hole and the annular airflow hole are communicated with the air flotation cavity.

5. A low pressure, high atomization, high speed bell cup sprayer according to claim 1 wherein: the base is also provided with an oil inlet hole, and the oil inlet hole is communicated with the oil inlet end of the oil rod.

6. A low pressure, high atomization, high speed bell cup sprayer according to claim 1 wherein: the hollow cavity is cylindrical.

7. A low pressure, high atomization, high speed bell cup sprayer according to claim 1 wherein: the outer surface of the atomizing cup head is coated with a non-stick pan layer.

8. A low pressure, high atomization, high speed bell cup sprayer according to claim 1 wherein: a plurality of fan-shaped elastic blocking pieces are arranged on the inner wall of the buffer hole and are concentrically arranged; when the elastic blocking piece is in a natural state, each buffer hole is in a closed state; the flowing direction of the paint in each buffer hole is crossed with the flowing direction of the paint in the conveying part.

9. A low pressure, high atomization, high speed bell cup sprayer according to claim 1 wherein: go out lacquer portion and include that the play liquid end of portion of carrying is connected and be the lacquer cover of leading of loudspeaker form and set up leading the lacquer shell of lacquer cover inside, it is cylindricly to go out the lacquer shell, well cavity sets up in the middle part of going out the lacquer shell, and the lateral wall of going out the lacquer shell is evenly located to a plurality of rectangle oil outlet ring, go out the lacquer shell and be close to the play liquid end of portion of carrying and set up the feed liquor hole with the portion of carrying intercommunication, the feed liquor hole communicates with a plurality of rectangle oil outlet via well cavity respectively.

10. A low pressure, high atomization, high speed bell cup sprayer according to claim 9 wherein: the bottom wall of the hollow cavity is provided with a conical drainage block, the drainage block is coaxially arranged with the liquid inlet hole, and the drainage block is used for guiding the paint flowing out of the liquid inlet hole to flow to the rectangular oil outlet hole; one end of the paint guide cover, which is far away from the conveying part, is bent inwards; the guide sleeve is in threaded connection with the conveying part.