CN211660329U - A kind of spraying equipment for uniform spraying of furniture surface - Google Patents

Abstract

The utility model discloses a spraying device for spraying paint evenly on the surface of furniture, which comprises a mixing bucket and a paint spraying pipe. The flat rod is riveted to the eccentric position of the first turbine, the first turbine is engaged with a first worm, the bottom of the first worm is fixed to the stirring blade, and the top is connected to the second worm; the upper part of the second worm is not fully meshed Gear, the smooth section of the second worm is sleeved with a tension spring; the mixing barrel is equipped with an air inlet pipe, a pump, a feeding hopper, a sampling pipe, a roller and a straight-through chute, and an annular vortex plate and a semi-circular vortex plate are arranged inside. The utility model generates a material-lifting stirring mode through the interstitial worm precession of the incomplete gear-second worm-stretching spring; Twisting track; the utility model has good stirring effect, uniform mixing and spraying, and is suitable for large-scale furniture production lines.

Description

A kind of spraying equipment for uniform spraying of furniture surface

technical field

The utility model relates to the technical field of furniture processing, in particular to a spraying device for uniform spraying of furniture surfaces.

Background technique

Wood furniture spraying is often the last step in the final molding of furniture. The success of spraying determines the quality, price and artistic aesthetics of the finished furniture. In order to make the surface of the furniture evenly painted, the spraying process of general home improvement furniture uses roller brushes multiple times. way to make the paint film even. However, the pure manual brush painting method is inefficient and is not suitable for the mass production process of industrial large-scale furniture.

The existing higher-grade wood furniture is still sprayed with a spray gun. In view of the high pressure of the traditional air spray gun, it is easy to cause an impact on the surface of the furniture, making the paint film too thick or too thin, or forming a scattered flower-like paint film on the surface of the furniture. , resulting in extremely uneven paint film; at the same time, the transfer efficiency of the traditional air spray gun (that is, the paint utilization rate) is about 30%, and the other 70% of the spray solvent is dispersed into the surrounding environment with the flying mist, which wastes a lot of paint or coating. , not only increases the economic cost, but also emits a lot of toxic and harmful substances such as VOC, benzene and formaldehyde, which seriously pollutes the atmosphere and water environment, and at the same time damages the health of the constructors.

Therefore, some manufacturers have developed airless spraying technology (airless) and low spraying pressure technology (HVLP), both of which realize the spraying effect of only paint without air in the spray gun, thus greatly improving the utilization rate of paint; The impact force of the furniture surface is small, thus ensuring the uniformity of the paint film. However, the capacity of both is small, and it is still necessary to mix the paint evenly before adding it to the paint tank. There are paint losses during the transfer process, and there are defects such as inconvenient cleaning. In a word, the current airless spraying technology (airless) and low spraying pressure technology (HVLP) are not mature products of furniture spraying equipment, and need to be further improved.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and proposes a spraying device for uniform spraying of furniture surfaces and a method of using the same.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A spraying device for uniform spraying of furniture surfaces, comprising a mixing bucket and a spraying pipe, the bottom wall and the side wall of the mixing bucket are provided with a sandwich cavity structure, the spraying pipe is specifically a corrugated pipe, and one end of the spraying pipe is connected to the mixing barrel. The bottom wall of the bucket is connected with the interior of the mixing bucket, and the other end of the paint spraying pipe is arranged at the upper position in the interlayer of the side wall of the mixing bucket and is connected with a round pipe. One end of the round pipe is an open end and the other end is a closed end. The open end of the pipe passes through a small ring on the outer side wall of the mixing barrel and is connected with a nozzle. The outer ring of the small ring is sealed and fixed to the outer side wall of the mixing barrel through a rubber cloth. One side surface of the mixing barrel is provided with spray holes, and the part of the round pipe extending out of the mixing barrel is also provided with a flow valve;

The closed end of the round tube passes through the large ring on the inner side wall of the mixing barrel and is fixed with a flat rod. The outer ring of the large ring is fixed and nested on the inner side wall of the mixing barrel, and the large ring and the small ring are opposite to each other. The side surfaces of the first turbine are connected to each other by compression springs, the end of the flat rod away from the round tube is riveted to the eccentric position of the first turbine through a pin, and the center position of the first turbine is erected on the inner sidewall of the mixing bucket through a fixed shaft, and is fixed One end of the shaft is fixed on the inner and outer side walls of the mixing tank through a cross arm;

The first turbine is engaged with a first worm, the bottom of the first worm is fixed with a stirring blade, the top of the first worm is fixedly connected with a second worm, and the lower part of the second worm is a smooth section and is sleeved on the center of the top wall of the mixing bucket. On the bearing seat of the second worm, the upper part of the second worm is a threaded segment and is meshed with an incomplete gear. The number of consecutive teeth of the incomplete gear accounts for 1/3-3/7 of the whole circle. The smooth section is sleeved with a tension spring, the top end of the tension spring is fixedly connected with the threaded section of the second worm, the bottom end of the tension spring is fixedly connected with the bearing seat, the center of the incomplete gear is threaded with a driving shaft, and the driving shaft is connected with a The motor, the top of the motor is provided with a support seat, and the support seat is fixed on the upper surface of the top wall of the mixing tank;

The top of the mixing barrel is also provided with an air inlet pipe and a feeding hopper, and the end of the air inlet pipe extending out of the mixing barrel is connected with a pump;

There is an annular vortex plate under the top wall of the mixing bucket, the annular vortex plate and the top wall of the mixing bucket form a gas isolation chamber, the bottom end of the air inlet pipe is located inside the gas isolation chamber, and the bottom end of the feed hopper passes through the annular vortex plate. And located below the annular vortex plate, the central position of the annular vortex plate is a reducing tube with a diameter gradually decreasing from top to bottom, the top of the second worm is sleeved in the reducing tube in the center of the annular vortex plate and is connected with the annular vortex plate. not in contact;

A semicircular vortex plate is arranged below the annular vortex plate. The semicircular vortex plate is a half-cut structure with a symmetrical plate structure with the annular vortex plate. The semicircular vortex plate and the annular vortex plate form an open turbine protection chamber. The first turbine is located inside the turbine protection chamber;

The bottom position of the side wall of the mixing tank is provided with a sampling pipe;

The lower surface of the bottom wall of the mixing barrel is provided with a roller, and the center position of the lower surface of the bottom wall of the mixing barrel is provided with a straight through chute with a concave cross-section.

Preferably, the large ring and the small ring are connected by 10-16 compression springs, and the compression springs are specifically SP 9733 compression springs produced by Prime-Line Products. , the large ring is fixed, the small ring slides and sleeves the circular tube, and one end of the circular tube rotates around the first turbine, so that the nozzle at the other end of the circular tube produces a pendulum clock-like twisting trajectory. During the twisting process, the small ring Its supporting and positioning function makes the direction of the spray head change regularly, and its spraying direction and distance have certain regional restrictions, so as to avoid the spray head running around. It will produce uneven phenomenon that the paint film is too thick or too thin, which should be promoted.

Preferably, the extension spring is a galvanized stainless steel equal-diameter thick spring, and the motor is a low-speed forward and reverse motor. By rotating the incomplete gear at a low speed, the second worm is lifted up. Then it descends rapidly. During the intermittent lifting-descending process, the first worm drives the first turbine to reciprocate, which drives the stirring blade to reciprocate helical precession, resulting in a stirring and material-lifting movement mode. This low-speed stirring method makes the paint liquid The air content is less, and the air always has an interface with the surface of the paint liquid, which improves the utilization rate of the paint.

Preferably, the pump machine is a small air compressor, and its pressure value is 0.1-1.5MPa. The internal pressure during painting and cleaning is adjusted by the pump machine, so that the paint liquid quickly rushes from the bottom to the spray head during painting, avoiding excessive Air enters the nozzle to further improve paint utilization.

Preferably, the circular tube and the inner ring of the small ring are smoothly sleeved and coated with lubricating oil, so as to ensure a certain degree of sealing between the circular tube and the small ring under low pressure, and avoid insufficient air pressure inside the mixing tank. At the same time, this setting will also produce air leakage when it is higher than 0.8MPa, so as to avoid the phenomenon that the air pressure inside the mixing tank is too high. The setting is not only for the convenience of making one end of the round tube rotate around the first turbine, so that the nozzle at the other end of the round tube produces a pendulum-like twisting trajectory, thereby improving the uniformity of painting; but also to adjust and control the internal pressure of the mixing tank. The principle is to use the characteristic that the seal of the collar sleeve is easily broken by the high-pressure airflow.

Preferably, the feeding hopper is provided with a sealing cover, and both the intake pipe and the sampling pipe are provided with electromagnetic on-off valves, which can maintain the overall sealing of the mixing tank, thereby controlling the single direction of the paint liquid and gas.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The utility model uses the intermittent worm precession structure of the incomplete gear-second worm-stretching spring, the incomplete gear rotates at a low speed, and the second worm is lifted up, and under the action of the stretching spring, the second worm is fast again. During the intermittent lifting-lowering process, the first worm screw drives the first turbine to reciprocate, and drives the stirring blade to reciprocate helical precession, resulting in a stirring and material-lifting movement mode; the stirring mode of the present utility model has a slow speed, The stirring effect is good, it will not produce a lot of bubbles, and it will not cause adverse consequences such as shearing and curing. It is conducive to spraying the paint liquid from the bottom through the pressure paint liquid on the upper surface. Before the spraying is completed, the air basically does not enter the nozzle. Therefore, the paint utilization rate of the traditional air spray gun is greatly improved, and the problems of uneven mixing and inconvenient cleaning of the existing airless spraying technology and low spraying pressure technology are also improved.

2. The utility model is set by the sleeve connection of the circular tube-small circular ring-large circular ring, so that the large circular ring is fixed, the small circular ring is slidingly sleeved on the circular tube, and one end of the circular tube rotates around the first turbine, so that the other end of the circular tube is rotated. During the twisting process, the support and positioning of the small ring makes the direction of the nozzle change regularly, and the spraying direction and distance are limited by certain areas to avoid the chaos of the nozzle. Compared with manual hand-held spraying, the spraying uniformity of the utility model is better, and the uneven phenomenon that the paint film is too thick or too thin will not be produced, which should be promoted.

3. During the painting process of the utility model, the mixing bucket can be moved by rollers, and a slide rail is provided in the straight-through chute, and the mixing bucket can be moved at a constant speed by the electric cart, so that the entire production line can be uniformly sprayed. The new type is a new structure integrating mixing, spraying and walking, which is beneficial to improve the uniformity of paint mixing and spraying, and is suitable for wide-scale promotion and use, thereby providing effective equipment support for the efficient production of existing furniture.

Description of drawings

Fig. 1 is the structural representation of a kind of spraying equipment for furniture surface homogenization spraying proposed by the utility model;

Fig. 2 is a perspective view of a round pipe of a spraying equipment for uniform spraying of furniture surfaces proposed by the utility model;

3 is a schematic diagram of the connection structure of a small ring and a large ring of a spraying equipment for uniform spraying of furniture surfaces proposed by the utility model;

FIG. 4 is a schematic diagram of the connection structure of the incomplete gears of a spraying equipment for the uniform spraying of furniture surfaces proposed by the utility model.

In the figure: mixing bucket 1, paint spraying pipe 2, round pipe 3, small ring 4, nozzle 5, flow valve 6, large ring 7, flat rod 8, compression spring 9, first turbine 10, fixed shaft 11, The first worm 12, the stirring blade 13, the second worm 14, the bearing seat 15, the incomplete gear 16, the tension spring 17, the driving shaft 18, the motor 19, the support seat 20, the air intake pipe 21, the feeding hopper 22, the pump 23. The annular vortex plate 24, the semicircular vortex plate 25, the sampling tube 26, the roller 27, the straight-through chute 28.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

1-4, a kind of spraying equipment for uniform spraying of furniture surface, including mixing bucket 1 and spraying pipe 2, the bottom wall and side wall of mixing bucket 1 are provided with interlayer cavity structure, and the spraying pipe 2 is specifically Corrugated pipe, one end of the paint spraying pipe 2 is connected to the bottom wall of the mixing barrel 1 and communicated with the interior of the mixing barrel 1, and the other end of the spraying pipe 2 is arranged at the upper position in the interlayer of the side wall of the mixing barrel 1 and is connected with a round pipe 3. One end of the circular tube 3 is an open end and the other end is a closed end. The open end of the circular tube 3 passes through the small ring 4 on the outer side wall of the mixing barrel 1 and is connected with the nozzle 5, and the outer ring of the small circular ring 4 passes through. The rubber cloth is sealed and fixed to the outer side wall of the mixing bucket 1, the nozzle 5 is specifically disc-shaped, and the side surface of the nozzle 5 away from the mixing bucket 1 is laid with spray holes, and the circular pipe 3 extends out of the mixing bucket 1. A flow valve 6 is also provided; the closed end of the round pipe 3 passes through the large ring 7 on the inner side wall of the mixing barrel 1 and is fixed with a flat rod 8, and the outer ring of the large ring 7 is fixedly nested in the mixing barrel 1 On the inner side wall of the large ring 7 and the small ring 4, the opposite sides of the large ring 7 and the small ring 4 are connected to each other through the compression spring 9, and the end of the flat rod 8 away from the circular tube 3 is riveted to the eccentric position of the first turbine 10 through the pin. The central position of the turbine 10 is erected on the inner side wall of the mixing barrel 1 through the fixed shaft 11, and one end of the fixed shaft 11 is fixed on the inner and outer side walls of the mixing barrel 1 through a cross arm; the first turbine 10 is engaged with the first A worm 12, a stirring blade 13 is fixedly connected to the bottom of the first worm 12, a second worm 14 is fixedly connected to the top of the first worm 12, and the lower part of the second worm 14 is a smooth section and is sleeved on the top wall of the mixing bucket 1 On the bearing seat 15 in the center, the upper part of the second worm 14 is a threaded segment and is meshed with an incomplete gear 16. The number of consecutive teeth of the incomplete gear 16 accounts for 1/3-3/7 of the whole circle, and the threaded segment of the second worm 14 The smooth section between the bearing seat 15 is sleeved with a tension spring 17, the top end of the tension spring 17 is fixedly connected with the threaded section of the second worm 14, and the bottom end of the tension spring 17 is fixedly connected with the bearing seat 15, which is not completely The center of the gear 16 is connected with a driving shaft 18, and the driving shaft 18 is connected with a motor 19. The top of the motor 19 is provided with a support seat 20, and the support seat 20 is fixed on the upper surface of the top wall of the mixing barrel 1; the top of the mixing barrel 1 is also An air inlet pipe 21 and a feeding hopper 22 are provided, and one end of the air inlet pipe 21 extending out of the mixing barrel 1 is connected with a pump 23; an annular vortex plate 24 is arranged under the top wall of the mixing barrel 1, and the annular vortex plate 24 is connected with the mixing barrel 1. The top wall of the material bucket 1 forms a gas isolation chamber, the bottom end of the intake pipe 21 is located inside the gas isolation chamber, and the bottom end of the feed hopper 22 passes through the annular vortex plate 24 and is located below the annular vortex plate 24. The central position is a reducing tube with a diameter gradually decreasing from top to bottom, the top of the second worm 14 is sleeved in the reducing tube in the center of the annular vortex plate 24 and is not in contact with the annular vortex plate 24; below the annular vortex plate 24 There is a semicircular vortex plate 25, the semicircular vortex plate 25 is a half-cut structure with a symmetrical plate structure with the annular vortex plate 24, and the semicircular vortex plate 25 and the annular vortex plate 24 form an open turbine protection chamber, The first turbine 10 is located in the turbine protection chamber The bottom position of the side wall of the mixing barrel 1 is provided with a sampling pipe 26; the lower surface of the bottom wall of the mixing barrel 1 is provided with a roller 27, and the central position of the lower surface of the bottom wall of the mixing barrel 1 is provided with a concave straight through Chute 28.

1-3, the large ring 7 and the small ring 4 are connected by 10-16 compression springs 9, the compression springs 9 are specifically SP 9733 compression springs produced by Prime-Line Products Company, round tube-small ring- The socket connection of the large ring is set, so that the large ring 7 is fixed, the small ring 4 is slidably connected to the circular tube 3, and one end of the circular tube 3 rotates around the first turbine 10, so that the nozzle 5 at the other end of the circular tube 3 generates a pendulum clock type. During the twisting process, the supporting and positioning function of the small ring 4 makes the direction of the nozzle 5 change regularly, and its spraying direction and distance have a certain area limit to prevent the nozzle 5 from running around. Compared with manual hand-held spraying, the spraying uniformity of the utility model is better, and the uneven phenomenon that the paint film is too thick or too thin will not occur, and it should be popularized.

Referring to FIG. 4 , the extension spring 17 is specifically a galvanized stainless steel equal-diameter thick spring, and the motor 19 is specifically a low-speed forward and reverse motor. Under the action, the second worm 14 rapidly descends again. During the intermittent lifting-lowering process, the first worm 12 drives the first turbine 10 to reciprocate, and drives the stirring blade 13 to reciprocate helical precession, resulting in a stirring and lifting motion. , This low-speed stirring method makes the air content in the paint liquid less, the air always has an interface with the paint liquid surface, and improves the paint utilization rate.

1, the pump 23 is specifically a small air compressor, and its pressure value is 0.1-1.5MPa, and the internal pressure during painting and cleaning is adjusted by the pump 23, so that the paint liquid is quickly rushed from the bottom to the nozzle 5 during painting, Avoid excessive air from entering the nozzle 5, and further improve the paint utilization rate.

Referring to Figure 1-2, the inner ring of the round tube 3 and the small ring 4 is smoothly sleeved and coated with lubricating oil, so as to ensure a certain degree of sealing between the round tube 3 and the small ring 4 under low pressure, to avoid The air pressure inside the mixing barrel 1 is not enough, and at the same time, this setting will also produce air leakage when it is higher than 0.8MPa, so as to avoid the phenomenon that the air pressure inside the mixing barrel 1 is too high, so this round pipe in the present utility model- The novel arrangement of the small ring-large ring is not only for the convenience of making one end of the circular tube 3 rotate around the first turbine 10, so that the nozzle 5 at the other end of the circular tube 3 produces a pendulum clock-like twisting trajectory, thereby improving the painting efficiency. It also has the effect of adjusting and controlling the internal pressure of the mixing barrel 1. The principle is to use the characteristic that the sealing property of the collar sleeve is easily broken by the high-pressure airflow and destroyed.

1 , the feeding hopper 22 is provided with a sealing cover, and the intake pipe 21 and the sampling pipe 26 are provided with electromagnetic on-off valves, which can maintain the overall sealing performance of the mixing tank 1, thereby controlling the single direction of the paint liquid and gas.

The working process of the present utility model can include the following steps:

a. Cleaning treatment: add cleaning agent and foaming agent from the feeding hopper 22 for soaking treatment, turn on the motor 19, make the incomplete gear 16 rotate counterclockwise at a low speed, and the rotation speed is 1-2r/min, and lift the second worm 14, Under the action of the tension spring 17, the second worm 14 rapidly descends again. During the intermittent lifting-lowering process, the first worm 12 drives the first turbine 10 to reciprocate and drive the stirring blade 13 to reciprocate and spirally precess to generate stirring. In this case, the flow valve 6 can be properly opened in the small flow mode, so that the cleaning agent enters the paint spraying pipe 2, the round pipe 3 and the spray head 5, so as to clean the mixing tank 1 and the spraying pipe 2. After cleaning The waste liquid is discharged through the sampling pipe 26 and the paint residue is detected;

b. Drying treatment: from the intake pipe 21, the heated air is pumped through the pump 23, the heated air is supplied by the air heater, the temperature is controlled to 180-250 ℃, the flow valve 6 is opened to the full flow mode, and other pipelines are closed, Make the heated air continuously flow through the paint spraying pipe 2, and measure the air humidity at the nozzle 5. When the humidity reaches below 30%, the drying can be stopped, so as to prevent the residual water in the mixing tank 1 from affecting the initial spraying effect;

c. Mixing process: add solvent, paint and other additives from the feeding hopper 22, turn on the motor 19, make the incomplete gear 16 rotate counterclockwise at a low speed, the rotation speed is 2-3r/min, repeat the second worm 14 of step a. During the intermittent lifting-lowering operation process, stir for 10-20min, and acupuncture sampling from the sampling tube 26 to understand the solubility, viscosity and uniformity of the paint liquid;

d. Painting process: Aim the nozzle 5 at the area to be painted on the furniture, close all other pipelines, only open the intake pipe 21 to pump dry air at room temperature through the pump 23, keep the pressure in the mixing tank 1 to about 0.3MPa, and keep the 3-5min; slowly open the flow valve 6, so that the paint liquid quickly pours into the paint spraying pipe 2, the round pipe 3 and the nozzle 5, and immediately increase the pressure of the pump 23 to 0.5-0.6MPa, so that the twisting movement of the nozzle 5 The surface of the furniture is sprayed; during the painting process, the mixing bucket 1 is moved by the roller 27, the slide rail is provided in the straight-through chute 28, and the mixing bucket 1 is moved at a constant speed by the electric cart, so as to uniformly spray the entire production line. .

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (7)

1. A spraying equipment for uniform spraying of furniture surfaces, comprising a mixing bucket (1) and a paint spraying pipe (2), characterized in that the bottom wall and the side wall of the mixing bucket (1) are provided with interlayer hollows. Cavity structure, the paint spraying pipe (2) is specifically a corrugated pipe, one end of the paint spraying pipe (2) is connected to the bottom wall of the mixing bucket (1) and communicated with the interior of the mixing bucket (1). The other end of the pipe (2) is arranged at the upper position in the interlayer of the side wall of the mixing barrel (1) and is connected with a circular pipe (3), one end of the circular pipe (3) is an open end and the other end is a closed end, the The open end of the round pipe (3) passes through the small ring (4) on the outer side wall of the mixing bucket (1) and is connected with the nozzle (5). The outer side wall of the material bucket (1) is sealed and fixed, the spray head (5) is specifically disc-shaped, and spray holes are laid on the side surface of the spray head (5) away from the mixing bucket (1). ) The part extending out of the mixing barrel (1) is also provided with a flow valve (6); The closed end of the circular tube (3) passes through the large circular ring (7) on the inner side wall of the mixing bucket (1) and is fixed with a flat rod (8), and the outer ring of the large circular ring (7) is fixed Nested on the inner side wall of the mixing barrel (1), the large circular ring (7) and the small circular ring (4) are connected to each other by compression springs (9) on the opposite sides, and the flat rod (8) is away from One end of the circular tube (3) is riveted at the eccentric position of the first turbine (10) through a pin, and the center position of the first turbine (10) is erected on the inner side of the mixing barrel (1) through a fixed shaft (11). wall, and one end of the fixed shaft (11) is fixed on the inner and outer side walls of the mixing barrel (1) through a cross arm; The first turbine (10) is engaged with a first worm (12), the bottom of the first worm (12) is fixedly connected with a stirring blade (13), and the top of the first worm (12) is fixedly connected with a first worm (12). Two worms (14), the lower part of the second worm (14) is a smooth section and is sleeved on the bearing seat (15) in the center of the top wall of the mixing bucket (1), and the upper part of the second worm (14) It is a threaded segment and is engaged with an incomplete gear (16). The number of consecutive teeth of the incomplete gear (16) accounts for 1/3-3/7 of the whole circle. The thread segment of the second worm (14) is connected to the bearing seat. The smooth section between (15) is sleeved with an extension spring (17), and the top end of the extension spring (17) is fixedly connected with the threaded section of the second worm (14). The bottom end is fixedly connected with the bearing seat (15), the center of the incomplete gear (16) is connected with a driving shaft (18), the driving shaft (18) is connected with a motor (19), and the motor (19) is The top is provided with a support seat (20), and the support seat (20) is fixed on the upper surface of the top wall of the mixing bucket (1); The top of the mixing barrel (1) is further provided with an air inlet pipe (21) and a feeding hopper (22), and the end of the air inlet pipe (21) extending out of the mixing barrel (1) is connected with a pump (23). ); An annular vortex plate (24) is arranged below the top wall of the mixing bucket (1), and the annular vortex plate (24) and the top wall of the mixing bucket (1) form a gas isolation chamber, and the air inlet pipe The bottom end of (21) is located inside the gas isolation chamber, and the bottom end of the feed hopper (22) passes through the annular vortex plate (24) and is located below the annular vortex plate (24), the annular vortex plate ( The center position of 24) is a reducing tube with a diameter gradually decreasing from top to bottom, and the top of the second worm (14) is sleeved in the reducing tube in the center of the annular vortex plate (24) and is connected to the annular vortex. The plate (24) is not in contact; A semi-circular vortex plate (25) is arranged below the annular vortex plate (24), and the semi-circular vortex plate (25) is a half-cut structure of a symmetrical plate structure with the annular vortex plate (24), so The semicircular vortex plate (25) and the annular vortex plate (24) form an open turbine protection chamber, and the first turbine (10) is located inside the turbine protection chamber; A sampling pipe (26) is provided at the bottom position of the side wall of the mixing bucket (1); A roller (27) is provided on the lower surface of the bottom wall of the mixing bucket (1), and a straight through chute (28) with a concave cross-section is arranged at the center of the lower surface of the bottom wall of the mixing bucket (1). 2. The spraying equipment for uniform spraying of furniture surfaces according to claim 1, wherein the large ring (7) and the small ring (4) pass through 10-16 compression springs (9) Connected, the compression spring (9) is specifically SP 9733 compression spring produced by Prime-Line Products. 3 . The spraying equipment for uniform spraying of furniture surfaces according to claim 1 , wherein the tension spring ( 17 ) is specifically a galvanized stainless steel equal-diameter thick spring. 4 . 4 . The spraying equipment for uniform spraying of furniture surfaces according to claim 1 , wherein the motor ( 19 ) is specifically a low-speed forward and reverse motor. 5 . 5 . The spraying equipment for uniform spraying of furniture surfaces according to claim 1 , wherein the pump ( 23 ) is a small air compressor with a pressure value of 0.1-1.5 MPa. 6 . 6 . The spraying equipment for uniform spraying of furniture surfaces according to claim 1 , wherein the circular tube ( 3 ) is smoothly sleeved with the inner ring of the small circular ring ( 4 ) and coated with lubricating oil. 7 . . 7. The spraying equipment for uniform spraying of furniture surfaces according to claim 1, characterized in that the feeding hopper (22) is provided with a sealing cover, the air inlet pipe (21) and the sampling pipe (26) ) are equipped with electromagnetic switch valve.

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