CN210675581U - Centrifugal electrostatic rotary cup sprayer - Google Patents

Abstract

The application discloses a centrifugal electrostatic rotary cup nozzle, which comprises an oil injection rod for conveying oil, a rotary cup, a turbine fixedly connected with the rotary cup and driving the rotary cup to rotate, a gas splitter and an atomization structure consisting of the rotary cup and a split atomizer; the atomizing structure and the gas splitter are mutually and airtightly installed to form an independent first gas passage structure which is used for driving the turbine to rotate for centrifugal atomization and a second gas passage structure which is used for carrying out gas flow convergence forming on oil subjected to centrifugal atomization by the rotary cup. The utility model discloses degree of atomization is high, and the convergence is formed effectually, does benefit to handheld spraying. And simultaneously, the utility model discloses can match current handheld static oil spout rifle universal handle, use when revolving the cup shower nozzle, need not to purchase other corollary equipment, utilize current handheld spray gun handle installation can the spraying, oil atomizing and shaping are effectual.

Description

Centrifugal electrostatic rotary cup sprayer

Technical Field

The utility model relates to a static revolves the cup field, especially relates to centrifugal static revolves cup, concretely relates to centrifugal static revolves cup shower nozzle.

Background

Paint application is a traditional process with a long history. With the progress of science and technology and the development of economy, the traditional coating process can not meet the requirements of modern society. The demand of the market for coating is rising, the quality requirement is higher, various new coating technologies and new processes (such as electrostatic coating, electrophoretic coating and the like) are continuously emerging, and the technology gradually becomes a modern practical industrial technology. The high-speed rotary cup type electrostatic spraying process has become one of the main means of modern automobile body coating from the viewpoints of improving product quality and production efficiency, saving paint, reducing environmental pollution and the like, and is widely applied to other industrial fields. Among them, the high-speed rotary cup type electrostatic spray gun has become an industrial coating device with wide application. The workpiece to be coated is grounded as an anode, an electrostatic spray gun (a rotary cup) is connected with negative high-voltage electricity (-50 to-120 kV) as a cathode, the rotary cup is driven by an air turbine, the rotating speed can reach 25000r/min in no-load operation, and can reach 30000 to 60000r/min in loaded operation. When the coating is sent to the rotary cup rotating at a high speed, the centrifugal action is generated by the rotary motion of the rotary cup, the coating is stretched to form a film on the inner surface of the rotary cup and moves to the edge of the rotary cup under the action of huge acceleration, the film is broken into superfine and charged fog drops under the double actions of centrifugal force and a strong electric field, the fog drops move to the coated workpiece with opposite polarity, and the fog drops are deposited on the surface of the coated workpiece to form a uniform, flat, smooth and full coating film.

The cup rotating principle is as follows: 1. the centrifugal atomization mechanism is that liquid flow thrown out by the rotary cup under the action of centrifugal force is dispersed into fog drops under the action of two forces: the first force is the friction generated by the relative movement between gas and liquid, and is called velocity atomization; the second force is a huge centrifugal force generated when the rotary cup rotates, and the atomization is accelerated and split under the action of the centrifugal force, so that the centrifugal atomization is called. The centrifugal atomization mechanism of liquids is classified into 3 types: directly split into fog drops, liquid filaments split into fog drops, and film-shaped split into fog drops. 2. Electrostatic atomization mechanism in electrostatic spraying, the droplets of coating material are broken into fine particles by the action of a high voltage electrostatic field, a phenomenon known as electrostatic atomization. The high voltage in electrostatic spraying is generated by high-frequency electrostatic generator, its negative pole is connected with gun head of spray gun, and its positive pole is connected with workpiece to be coated and grounded. A strong electrostatic field is formed between the spray gun head and the workpiece.

The most key technical indexes of the electrostatic rotary cup are two, wherein one is the atomization degree in the material spraying process; the second is the amount of the materials used, namely the degree of saving the materials. However, these two indexes often influence each other, and are closely related, and the higher the atomization degree of the material paint is, the better the surface effect of the sprayed workpiece is, and the more the material is saved. However, the degree of atomization is not only related to static electricity, but also more important to the action of high-pressure airflow, and different airflow strength, airflow velocity and blowing direction have very great influence on the centrifugal effect of the rotary cup and the atomization molding effect.

Electrostatic rotary cup spraying is a recognized environment-friendly and energy-saving spraying mode, but a rotary cup spray gun is heavy and needs more regulation and control assistance, so that the electrostatic rotary cup spraying is used for automatic spraying. At present, the cup-rotating spraying cannot be effectively realized by hand-held operation.

SUMMERY OF THE UTILITY MODEL

The electrostatic rotary cup aims at solving the technical problems that the electrostatic rotary cup in the prior art is large in size, heavy and almost incapable of being operated by hands. The application provides a centrifugal static revolves cup shower nozzle for need light nimble convenient spraying demand of adjustment. And simultaneously, the utility model discloses can match current handheld static oil spout rifle's universal handle, the utility model discloses a afterbody air inlet interface sets up according to current handle interface, consequently, uses when revolving the cup shower nozzle, realized and need not to purchase other corollary equipment, utilize current handheld spray gun handle installation can the spraying, realize convenient operation, and is light and handy, the cup rifle that revolves that can manual nimble operation. The formed air of the rotary cup gun is operated on the handle, and the paint is switched on and off and the oil quantity is controlled by the limiting knob and the trigger on the handle.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

a centrifugal electrostatic rotary cup nozzle comprises an oil injection rod for conveying oil, a rotary cup, a turbine fixedly connected with the rotary cup and driving the rotary cup to rotate, a gas splitter and an atomization structure consisting of the rotary cup and a split atomizer; the atomizing structure and the gas splitter are mutually and airtightly installed to form an independent first gas passage structure which is used for driving the turbine to rotate for centrifugal atomization and a second gas passage structure which is used for carrying out gas flow convergence forming on oil subjected to centrifugal atomization by the rotary cup. Description of the structure and working principle: the split atomizer and the gas splitter belong to non-standard part structures, and the manufacturing mode can be completed through machining and die manufacturing, but the sealing surface of a structural part needs to be subjected to subsequent polishing treatment, otherwise, the situation of not tight gas tightness is easy to occur. The split atomizer has two functions: in particular, oil from the oil injection rod is centrifuged, so that the aim of atomization in the first stage is fulfilled. Meanwhile, the rotary cup rotating at a high speed centrifugally atomizes the oil, and the outer wall of the rotary cup and the flow distribution atomizer form a second-stage pneumatic atomization effect due to the fact that gas and the oil are mixed in a crossed mode at a high speed. However, the driving rotating cup rotates at a high speed, the source and the trend of high-speed gas which is mixed with oil at a high speed in a crossed mode to generate atomization are determined by the gas splitter, the gas splitter is matched with the splitting atomizer through a channel arranged on the gas splitter to form closed airflow to pass through, the closed airflow is used for driving the turbine to rotate to achieve centrifugal action and blowing the airflow to the oil passing through centrifugation at a high speed respectively, the purpose of restricting the movement direction and the shape of the atomized oil is achieved, and the oil is sprayed uniformly conveniently. The technical effect is that the structure divides the high-pressure gas into two paths: one path is used for independently driving the turbine to rotate, and the other path is used for independently shaping the centrifugally atomized oil. It is to be explained here that the quality of the oil formation is directly determinative of the oil usage and the uniformity of the spray. Because the rotary cup is designed to be a horn mouth, after high-speed centrifugation, oil flies out in the tangential direction away from the rotary cup, so that the oil has a large expansion angle and is difficult to be directly sprayed on a workpiece, and the adverse results of uneven spraying and waste of a large amount of oil are brought. The advantage of adopting independent air current to take shape the oil after atomizing is that can adjust the velocity of flow size of shaping air current according to the oil atomizing degree after the actual centrifugation, and independent regulation can not influence the problem of centrifugal atomization like this, can reach very ideal atomizing and shaping effect. The problem of current cup shower nozzle mix the air supply, also can influence the flow condition of shaping air supply under the obstructed condition of centrifugal air supply flow of cup soon is solved, actual spraying effect can not receive linear technological effect because of adjusting the air supply size like this, is very difficult to master. In addition, when different workpieces are sprayed, the viscosity of oil and the spraying thickness are different, so that the spraying thickness is difficult to master, and the defective rate and the rejection rate are high.

In order to further clarify the structure and principle of the centrifugal rotation of the rotating cup, the present invention preferably adopts the following arrangement: the turbine is installed in the cavity of circling round between gas shunt and reposition of redundant personnel atomizer, first gas channel structure by with the high-pressure gas intercommunication first intake pipe, what set up on the gas shunt is used for impacting the rotatory pressure release drive hole of turbine, the cavity of circling round, retrieve high-pressure gas's return-air tank and with the first exhaust hole of return-air tank gas outgoing constitute. The key point here is the pressure relief driving hole provided in the gas splitter. The axial direction of the pressure relief driving hole is obliquely intersected with the length direction of the turbine blade, when high-speed airflow is ejected out from the pressure relief driving hole at a high speed, the airflow directly acts on the stress surface of the blade of the turbine, the airflow does not need to be guided through the turbine, the kinetic energy of the air is directly converted into the torque of the turbine, the air does not need to enter from one end of the turbine blade like the conventional turbine arrangement, and the air is formed to revolve through flowing along the surface of the turbine blade, so that the principle of high-speed rotation of the turbine is different. The utility model discloses a structure setting admits air from the turbine below, has avoided admitting air from the side among the prior art, and gaseous loss of circling round reduces gaseous energy conversion, leads to same atmospheric pressure, and same gas flow rate, under the condition of same turbine resistance, the turbine speed of current setting mode is less than the turbine speed that above-mentioned structure set up, under the equal rotational speed, can realize through lower atmospheric pressure value, the brief reduction compressed air's that also like this provides the cost. Then after the gas impact turbine, directly retrieve through the return-air groove that the cross-section is greater than the pressure release drive hole far away to discharge through first exhaust hole. The driving of the turbine rotation is completed, and the turbine can always keep extremely high speed rotation because the high-pressure high-speed airflow is constant. The purpose of setting the section of the air return groove to be obviously larger than the pressure relief driving hole is to prevent the influence of gas retention on the driving effect of the turbine caused by unsmooth gas discharge.

Preferably, the second air passage structure comprises a second air inlet pipe, a second air inlet hole, an air groove, an axial groove and a plurality of air guide holes, wherein the second air inlet pipe, the second air inlet hole, the air groove and the axial groove are mutually communicated and arranged on the gas splitter, and the air guide holes are arranged on a splitting atomizer axially mounted with the gas splitter and used for guiding and blowing high-pressure gas to the outer side surface of the rotating cup; the gas groove and the axial groove are sleeved with the gas splitter and the outer shell outside the split atomizer through the gas-tight sleeve to form a closed gas flow channel. The unique design of second air flue structure is that whole air flue does not carry out the trompil on a component, or sets up gas passage, but the gas passage that forms through the cooperation between a plurality of components, and the technological effect that brings like this is just reaching or optimizing under the prerequisite of technological effect, can very big simplification component's structure, great improvement component manufacturing's cost. And the air flow for converging the atomized and centrifuged paint materials is independently supplied and regulated. Gaseous at first entering into the setting through the second intake pipe and being in gas tank and the axial recess on the gas shunt lateral wall, owing to have blockking of airtight connection's shell body, consequently, high-pressure gas just can only flow to the direction of reposition of redundant personnel atomizer between gas shunt and shell body, because reposition of redundant personnel atomizer and gas shunt contact are sealed, reposition of redundant personnel atomizer links firmly sealedly with the shell body screw thread, gaseous just can only discharge and set up the static of reposition of redundant personnel atomizer and revolve cup body contact through running through a plurality of gas guide holes that set up on reposition of redundant personnel atomizer, realize the convergence after the material paint centrifugal atomization. It is worth mentioning that the sealing between the first air channel structure and the second air channel structure is realized by the sealing bearing in the axial structure, the sealing bearing is a standard component, the air tightness of the sealing bearing cannot be absolute under the static pressure, but no influence is caused on the dynamic air flow in the first air channel structure and the second air channel structure, because the influence of the fine air passing through the sealing bearing on the air flow pressure in the first air channel structure or the second air channel structure is nearly zero, and the fine air flow can realize the starting heat dissipation of the sealing bearing, thereby having a positive effect on the service life of the sealing bearing.

Preferably, the rotary cup is rotatably mounted in the split atomizer through at least one sealing bearing, and forms an annular slit for converging atomized paint on the outer wall of the rotary cup together with the split atomizer. The annular slit is the place for gas exhaust in the second air passage structure, after gas exhaust, the annular slit is tightly attached to the outer wall of the rotating cup to flow at a high speed, and finally, the annular slit and the oil after centrifugation are subjected to high-speed cross round, so that the oil after centrifugation atomization is subjected to secondary atomization and convergence forming. Further, two sealing bearings are usually adopted and are suitable, and a shaft sleeve is arranged between the two sealing bearings for separation, so that the sealing performance can be further improved, and the most important is the rotation stability of the rotating cup. Because the working rotating speed of the rotating cup is very high, under the condition of long-term high-speed motion, if one sealing bearing is used, the service life of the rotating cup is shortened, and after the sealing bearing is subjected to self-abrasion in the later period, the precision is difficult to ensure.

Preferably, reposition of redundant personnel atomizer lower part edge is provided with and is used for contacting sealed inclined plane with gas shunt upper portion, sealed inclined plane smooth setting and the smooth laminating of gas shunt's contact surface. Because the turbine is arranged between the flow dividing atomizer and the gas flow divider and is also the key for forming the first gas channel structure, the contacted sealing inclined plane is set to be smooth, and the contact sealing can be realized very easily. Of course, the sealing can be realized by using a sealing ring or other sealing modes through pressurization deformation; however, the structure complexity is increased, and even more structures are added, the assembly is not simplified enough, the electrostatic rotary cup belongs to precise equipment, the more parts are assembled, the more complicated the process is, and the airtightness and the flow rate control of gas are affected more adversely. Therefore, on the premise of not influencing the technical effect, the fewer the structural parts are, the lower the assembly difficulty is, the better the assembly difficulty is.

Preferably, the outer edge of the lower part of the gas splitter is provided with a sealing groove for installing a sealing ring, and the sealing ring arranged in the sealing groove is attached and sealed with the inner wall of the outer shell and the gas splitter.

Preferably, the inner cover of the rotary cup is provided with an oil distribution cap for dispersing and attaching the oil conveyed by the oil injection rod on the inner wall of the rotary cup.

Preferably, the atomizing structure further comprises a boss which is arranged on the outer wall of the rotary cup and protrudes outwards and is close to the upper edge of the rotary cup body, the outer circumferential side wall of the boss and the inner wall, opposite to the flow dividing atomizer, of the boss form the slit structure, and the outer side wall of the boss is parallel to the central axis of the rotary cup.

Preferably, a first exhaust hole a for exhausting gas in the first gas channel is arranged at a position of the outer shell corresponding to the first exhaust hole B; and a metal wire used for transmitting static electricity to the static electricity rotating cup is embedded in the gas splitter and is electrically connected with a static electricity conveying pipe arranged at the lower part of the gas splitter.

Preferably, the outer shell is radially provided with a material hole communicated with the oil injection rod, and the outer shell is detachably, hermetically and fixedly connected with the flow distribution atomizer through threads.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is an exploded perspective view of the present invention;

FIG. 2 is a schematic view from the opposite perspective of FIG. 1;

FIG. 3 is a front view of the present invention with a horizontally separated structure

FIG. 4 is a multi-layer rotary sectional structure view of the present invention;

FIG. 5 is another schematic view of FIG. 4;

FIG. 6 is another schematic view of FIG. 4;

FIG. 7 is a front view of the assembly structure of the present invention;

FIG. 8 is a full sectional view taken along section line H-H in FIG. 7;

in the figure: 1-an outer shell; 101-first exhaust hole a;

2-a gas splitter; 201-first venting hole B; 202-axial grooves; 203-gas tank; 204-a seal groove; 205-electrostatic delivery tube; 206-a first intake pipe; 207-second inlet pipe; 208-oil spray rod; 209-air return tank; 210-a turbine; 211-second intake holes; 212-pressure relief drive hole; 213-material holes;

3-sealing the bearing; 31-shaft sleeve;

4-a split-flow atomizer; 401-sealing bevel; 402-air vents; 403-threads;

5-rotating the cup;

6-oil separating cap;

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

referring to the attached drawings 1-4 of the specification, the centrifugal electrostatic rotary cup nozzle comprises an oil injection rod 208 for conveying oil, a rotary cup 5, a turbine 210 fixedly connected with the rotary cup 5 and driving the rotary cup 5 to rotate, a gas splitter 2 and an atomization structure consisting of the rotary cup 5 and a split atomizer 4; the atomizing structure and the gas splitter 2 are mutually and airtightly installed to form an independent first gas channel structure which is used for driving the turbine 210 to rotate for centrifugal atomization through gas flow and a second gas channel structure which is used for carrying out gas flow convergence forming on oil subjected to centrifugal atomization by the rotary cup 5. Description of the structure and working principle: the flow dividing atomizer 4 and the gas flow divider 2 belong to non-standard part structures, and the manufacturing mode can be completed through machining and die manufacturing, but the subsequent polishing treatment is required for the structural part sealing surface, otherwise, the situation of not tight air tightness is easy to occur. The split atomizer 4 has two functions: specifically, the oil from the oil injection rod 208 is centrifuged to achieve the first stage of atomization. Meanwhile, the high-speed rotating rotary cup 5 centrifugally atomizes the oil, and the outer wall of the rotary cup 5 and the flow distribution atomizer 4 form a second-stage pneumatic atomization effect due to high-speed cross mixing of gas and the oil. However, the driving rotating cup 5 rotates at a high speed, the source and the trend of the high-speed gas which is mixed with the oil at a high speed and atomized are determined by the gas splitter 2, the gas splitter 2 forms a closed gas flow through a channel arranged by the gas splitter 2 and the flow splitting atomizer 4 in a matching manner, the closed gas flow is respectively used for driving the turbine 210 to rotate to realize centrifugal action and blowing the gas flow to the oil passing through the centrifugation at a high speed, the purpose of restricting the motion direction and the shape of the atomized oil is achieved, and the uniform spraying of the oil is facilitated. The technical effect is that the structure divides the high-pressure gas into two paths: one path is used for independently driving the turbine 210 to rotate, and the other path is used for independently shaping the centrifugally atomized oil. It is to be explained here that the quality of the oil formation is directly determinative of the oil usage and the uniformity of the spray. Because the rotary cup 5 is designed to be a bell mouth, after high-speed centrifugation, oil flies out in the tangential direction away from the rotary cup 5, so that the oil has a large expansion angle and is difficult to be directly sprayed on a workpiece, and the adverse results of uneven spraying and waste of a large amount of oil are brought. The advantage of adopting independent air current to take shape the oil after atomizing is that can adjust the velocity of flow size of shaping air current according to the oil atomizing degree after the actual centrifugation, and independent regulation can not influence the problem of centrifugal atomization like this, can reach very ideal atomizing and shaping effect. The problem of current cup shower nozzle mix the air supply, also can influence the flow condition of shaping air supply under the obstructed condition of centrifugal air supply flow of cup 5 is revolved, actual spraying effect can not receive linear technological effect because of adjusting the air supply size like this, is very difficult to master is solved. In addition, when different workpieces are sprayed, the viscosity of oil and the spraying thickness are different, so that the spraying thickness is difficult to master, and the defective rate and the rejection rate are high.

Example 2:

as a preferred embodiment of the present invention, in order to further explain the principle of the present invention, the following configurations are specifically adopted in the present invention as shown in the attached drawings 1 to 8 of the specification: a centrifugal static rotary cup nozzle comprises an oil injection rod 208 for conveying oil, a rotary cup 5, a turbine 210 fixedly connected with the rotary cup 5 and driving the rotary cup 5 to rotate, a gas splitter 2 and an atomization structure consisting of the rotary cup 5 and a split atomizer 4; the atomizing structure and the gas splitter 2 are mutually and airtightly installed to form an independent first gas channel structure which is used for driving the turbine 210 to rotate for centrifugal atomization through gas flow and a second gas channel structure which is used for carrying out gas flow convergence forming on oil subjected to centrifugal atomization by the rotary cup 5. The turbine 210 is installed in a convolution cavity between the gas splitter 2 and the split atomizer 4, and the first air passage structure is composed of a first air inlet pipe 206 communicated with high-pressure gas, a pressure relief driving hole 212 arranged on the gas splitter 2 and used for guiding and impacting the high-pressure gas to the turbine 210 to rotate, a convolution cavity, a gas return groove 209 for recovering the high-pressure gas, and a first exhaust hole 201 for exhausting the gas in the gas return groove 209. The key point here is the pressure relief drive hole 212 provided in the gas splitter 3. The axial direction of the pressure relief driving hole 212 is obliquely intersected with the length direction of the blade of the turbine 210, when high-speed airflow is ejected from the pressure relief driving hole 212 at a high speed, the airflow directly acts on the stress surface of the blade of the turbine 210, the airflow does not need to be guided by the turbine 210, the kinetic energy of the air is directly converted into the torque of the turbine 210, the air does not need to enter from one end of a turbine blade like the existing turbine arrangement, and the air flows along the surface of the turbine blade to form convolution, so that the principle of high-speed rotation of the turbine is different. The utility model discloses a structure setting admits air from turbine 210 below, has avoided admitting air from the side among the prior art, and gas loss of circling round reduces gaseous energy conversion, leads to same atmospheric pressure, and same gas flow rate, under the condition of same turbine 210 resistance, the turbine speed of current setting mode is less than the turbine 210 rotational speed that above-mentioned structure set up, under the equal rotational speed, can realize through lower atmospheric pressure value, the reduction that also introduces like this compressed air provides the cost. Then, after the gas impacts the turbine, the gas is directly recovered through the air return groove 209 with the cross section far larger than that of the pressure relief driving hole 212 and is discharged through the first exhaust hole 201. The turbine 210 is driven to rotate, and the turbine 210 can always rotate at an extremely high speed because the high-pressure high-speed airflow is constant. The purpose of providing the cross section of the return groove 209 significantly larger than the relief drive hole 212 is to prevent gas stagnation from affecting the driving effect of the turbine 210 due to gas discharge failure.

In this embodiment, the second air channel structure includes a second air inlet pipe 207, a second air inlet hole 211, an air groove 203, an axial groove 202, which are mutually communicated and arranged on the gas splitter 2, and a plurality of air guide holes 402, which are arranged on the splitter atomizer 4 axially mounted with the gas splitter 2 and are used for guiding and blowing the high-pressure air to the outer side surface of the rotating cup 5; the gas groove 203 and the axial groove 202 are arranged in a sealed gas flow channel formed between the gas splitter 2 and the outer shell 1 outside the split atomizer 4 through a gas-tight sleeve. The unique design of second air flue structure is that whole air flue does not carry out the trompil on a component, or sets up gas passage, but the gas passage that forms through the cooperation between a plurality of components, and the technological effect that brings like this is just reaching or optimizing under the prerequisite of technological effect, can very big simplification component's structure, great improvement component manufacturing's cost. And the air flow for converging the atomized and centrifuged paint materials is independently supplied and regulated. Gas firstly enters the gas groove 203 and the axial groove 202 which are arranged on the outer side wall of the gas splitter 2 through the second gas inlet pipe 207, and due to the blocking of the outer shell 1 with airtight connection, high-pressure gas can only flow towards the direction of the split-flow atomizer 4 between the gas splitter 2 and the outer shell 1, the split-flow atomizer 4 is in contact sealing with the gas splitter 2, the split-flow atomizer 4 is in thread connection sealing with the outer shell 1, and gas can only be discharged through the plurality of gas guide holes 402 which are arranged on the split-flow atomizer 4 and is in contact with the static rotary cup body arranged on the split-flow atomizer 4, so that the convergence after the centrifugal atomization of the material paint is realized. It should be noted that the sealing between the first air duct structure and the second air duct structure is realized by the sealing bearing 3 in the axial structure, and the sealing bearing 3 is a standard component, and the air tightness thereof cannot achieve absolute 100% under static pressure, but has no influence on the dynamic air flow in the first air duct structure and the second air duct structure, because the influence of the fine air passing through the sealing bearing 3 on the air flow pressure in the first air duct structure or the second air duct structure is nearly zero, and the fine air flow can realize the starting heat dissipation of the sealing bearing 3, and has a positive effect on the service life of the sealing bearing 3.

Example 3:

in order to further optimize the structure of the present invention, the following settings are specifically adopted: such as the electrostatic bell cup spray head shown in fig. 1-8. The rotary cup 5 is rotatably arranged in the flow-dividing atomizer 4 through at least one sealing bearing 3, and forms an annular slit for converging atomized paint with the flow-dividing atomizer 4 on the outer wall of the rotary cup 5. The annular slit is the place for gas exhaust in the second air passage structure, after gas exhaust, the annular slit is tightly attached to the outer wall of the rotating cup 5 to flow at a high speed, and finally, the annular slit and the oil after centrifugation are subjected to high-speed cross round, so that the oil after centrifugation atomization is subjected to secondary atomization and convergence forming.

In this embodiment, the lower edge of the flow distribution atomizer 4 is provided with a sealing inclined plane 401 for contacting and sealing with the upper part of the gas distributor 2, and the sealing inclined plane 401 is smoothly arranged to be smoothly attached to the contact surface of the gas distributor 2. Since the turbine 210 is installed between the split atomizer 4 and the gas splitter 2 and is also the key to the structure of the first gas duct, the contact seal bevel 401 is smooth to realize the contact seal very easily. Of course, the sealing can be realized by using a sealing ring or other sealing modes through pressurization deformation; however, the structure complexity is increased, and even more structures are added, the assembly is not simplified enough, the electrostatic rotary cup belongs to precise equipment, the more parts are assembled, the more complicated the process is, and the airtightness and the flow rate control of gas are affected more adversely. Therefore, on the premise of not influencing the technical effect, the fewer the structural parts are, the lower the assembly difficulty is, the better the assembly difficulty is.

In this embodiment, the outer edge of the lower portion of the gas splitter 2 is provided with a sealing groove 204 for installing a sealing ring, and the sealing ring arranged in the sealing groove 204 is attached and sealed with the inner wall of the outer shell 1 and the gas splitter 2.

In this embodiment, the oil distribution cap 6 for dispersing and adhering the oil delivered by the oil injection rod 208 to the inner wall of the rotating cup 5 is covered in the rotating cup 5. The oil distribution cap 6 comprises an oil distribution cover which is vertically arranged in the axial direction of the oil injection rod 208, and the lower end face of the oil distribution cover axially extends downwards to form a plurality of connecting parts which are used for being fixedly clamped on the inner wall of the rotary cup 5 and are communicated with the oil injection port of the oil injection rod 208 in a sealing mode. The oil distribution cover is made of insulating materials, and the shortest distance between the outer circumference of the oil distribution cover and the inner wall of the rotating cup 5 is less than two millimeters. The purpose of adopting insulating material to set up is to reduce because the influence of static to the oil adhesive force, because divide the oil cover perpendicular to penetrate oil stick 208 and set up, the oil under the effect of high-speed centrifugation, can only throw the inner wall that falls on spinning cup 5 through dividing oil cover all around, consequently, adopt insulating material can reduce the adhesive resistance of oil as far as at this in-process, further can adopt the mode of tectorial membrane or coating film at the lower surface of dividing the oil cover further improvement oil separability.

In this embodiment, the atomizing structure further includes a boss protruding outward and arranged on the outer wall of the rotating cup 5 near the upper edge of the cup body of the rotating cup 5, the inner wall of the outer circumferential side wall of the boss opposite to the shunt atomizer 4 forms the slit structure, and the outer side wall of the boss is arranged in parallel with the central axis of the rotating cup 5.

In this embodiment, a first exhaust hole a101 for exhausting gas in a first air passage is arranged at a position of the outer shell 1 corresponding to the first exhaust hole 201B; a metal wire for transmitting static electricity to the static electricity rotating cup is further embedded in the gas splitter 2, and the metal wire is electrically connected with a static electricity conveying pipe 205 arranged at the lower part of the gas splitter 2. The negative electrode voltage of the electrostatic delivery pipe 205 connected with the low potential is-60 KV.

In this embodiment, the outer shell 1 is radially provided with a material hole 213 communicated with the oil injection rod 208, a conical adjusting needle capable of axially reciprocating along the oil injection rod 208 is arranged at a cross-section end of the material hole 213 communicated with the oil injection rod 208, and the adjustment of the oil supply amount is controlled by adjusting the position of the flow cross-section of the conical adjusting needle and the oil injection rod 208. When the conical adjusting needle is contacted with the oil injection rod 208, the oil flow cross section is blocked, and the oil is closed. And further, the outer shell 1 is detachably and hermetically fixedly connected with the flow distribution atomizer 4 through threads.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A centrifugal static electricity rotary cup spray head comprises an oil injection rod (208) used for conveying oil, a rotary cup (5), a turbine (210) fixedly connected with the rotary cup (5) and driving the rotary cup (5) to rotate, and is characterized in that: the atomizing device also comprises a gas splitter (2) and an atomizing structure consisting of a rotating cup (5) and a splitting atomizer (4); the atomizing structure and the gas splitter (2) are mutually and airtightly installed to form an independent first gas channel structure which is used for driving the turbine (210) to rotate for centrifugal atomization and a second gas channel structure which is used for carrying out gas flow convergence forming on oil subjected to centrifugal atomization by the rotary cup (5).

2. A centrifugal electrostatic spinning cup spray head according to claim 1, wherein: the turbine (210) is installed in the cavity of circling round between gas divider (2) and reposition of redundant personnel atomizer (4), first gas channel structure by with high-pressure gas intercommunication first intake pipe (206), what set up on gas divider (2) is used for the high-pressure gas direction impact the rotatory pressure release drive hole (212) of turbine (210), the cavity of circling round, retrieve high-pressure gas's gas return groove (209) and with gas return groove (209) gas outgoing's first exhaust hole B (201) constitute.

3. A centrifugal electrostatic spinning cup spray head according to claim 2, wherein: the second air channel structure comprises a second air inlet pipe (207), a second air inlet hole (211), an air groove (203), an axial groove (202) and a plurality of air guide holes (402) which are arranged on a flow dividing atomizer (4) axially arranged with the gas divider (2) and used for guiding and blowing high-pressure air to the outer side surface of the rotary cup (5), wherein the second air inlet pipe (207), the second air inlet hole (211), the air groove (203) and the axial groove are mutually communicated; the gas groove (203) and the axial groove (202) are sleeved through an airtight sleeve to form a closed gas flow channel between the gas flow divider (2) and the outer shell (1) outside the flow dividing atomizer (4).

4. A centrifugal electrostatic spinning cup spray head according to any one of claims 1 to 3 wherein: the rotary cup (5) is rotatably installed in the flow dividing atomizer (4) through at least one sealing bearing (3) and forms an annular slit for converging atomized paint with the flow dividing atomizer (4) on the outer wall of the rotary cup (5).

5. A centrifugal electrostatic spinning cup spray head according to claim 1, wherein: the edge of reposition of redundant personnel atomizer (4) lower part is provided with and is used for contacting sealed inclined plane (401) with gas shunt (2) upper portion, sealed inclined plane (401) smooth setting is laminated with the contact surface smoothness of gas shunt (2).

6. A centrifugal electrostatic spinning cup spray head according to claim 3, wherein: the gas distributor (2) lower part outer fringe is provided with seal groove (204) of installation sealing washer, the sealing washer of placing in seal groove (204) is sealed with shell body (1) inner wall and gas distributor (2) laminating.

7. A centrifugal electrostatic spinning cup spray head according to claim 1, wherein: an oil distributing cap (6) used for dispersing and attaching the oil material conveyed by the oil injection rod (208) on the inner wall of the rotary cup (5) is covered in the rotary cup (5).

8. A centrifugal electrostatic spinning cup spray head according to claim 1, wherein: the atomizing structure further comprises a boss protruding outwards and arranged close to the upper edge of the cup body of the rotary cup (5) on the outer wall of the rotary cup (5), a slit structure is formed between the outer circumferential side wall of the boss and the inner wall opposite to the shunt atomizer (4), and the outer side wall of the boss is parallel to the central axis of the rotary cup (5).

9. A centrifugal electrostatic spinning cup spray head according to claim 3, wherein: a first exhaust hole A (101) for exhausting gas in a first air channel is formed in the position, corresponding to the first exhaust hole B (201), of the outer shell (1); and a metal wire used for transmitting static electricity to the static electricity rotating cup is embedded in the gas splitter (2), and the metal wire is electrically connected with a static electricity conveying pipe (205) arranged at the lower part of the gas splitter (2).

10. A centrifugal electrostatic spinning cup spray head according to claim 3, wherein: the outer shell (1) is radially provided with a material hole (213) communicated with the oil injection rod (208), and the outer shell (1) is detachably, hermetically and fixedly connected with the flow distribution atomizer (4) through threads.

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