CN110947546A

CN110947546A - Spraying equipment for uniformly spraying paint on surface of furniture and using method thereof

Info

Publication number: CN110947546A
Application number: CN201911371832.3A
Authority: CN
Inventors: 夏德强
Original assignee: Lixin Ailyu Furniture Processing Co ltd
Current assignee: Lixin Ailyu Furniture Processing Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-04-03

Abstract

The invention discloses spraying equipment for uniformly spraying paint on the surface of furniture, which comprises a mixing barrel and a paint spraying pipe, wherein one end of the paint spraying pipe is connected with a round pipe, the open end of the round pipe penetrates through a small round ring and is connected with a spray head, the closed end of the round pipe penetrates through a large round ring and is fixedly connected with a flat rod, the flat rod is riveted at the eccentric position of a first turbine, the first turbine is meshed with a first worm, the bottom of the first worm is fixedly connected with a stirring blade, and the top end of the first worm is connected with a second; the upper part of the second worm is meshed with an incomplete gear, and the smooth section of the second worm is sleeved with an extension spring; the mixing barrel is externally provided with an air inlet pipe, a pump, a feed hopper, a sampling pipe, a roller and a through chute, and is internally provided with an annular vortex plate and a semicircular vortex plate. According to the invention, a material lifting type stirring mode is generated through a clearance worm precession structure of an incomplete gear, a second worm and an extension spring; the nozzle generates a pendulum clock type twisting track through the sleeve joint arrangement of the circular tube, the small circular ring and the large circular ring; the invention has good stirring effect and uniform mixing and spraying, and is suitable for large-scale furniture production lines.

Description

Spraying equipment for uniformly spraying paint on surface of furniture and using method thereof

Technical Field

The invention relates to the technical field of furniture processing, in particular to spraying equipment for uniformly spraying paint on the surface of furniture and a using method thereof.

Background

The painting of wood furniture is often the last step of the final forming process of furniture, the success of painting determines the quality, price and artistic aesthetic property of the finished furniture product, and in order to make the paint on the surface of the furniture uniform, the painting process of common home decoration furniture adopts a mode of rolling and brushing for many times to make the paint film uniform. However, the pure manual rolling brush painting mode has low efficiency, and is not suitable for the mass production process of industrial large-scale furniture.

The existing higher-grade wood furniture still adopts a spray gun spraying mode, and in view of the fact that the pressure of a traditional air spray gun is high, the traditional air spray gun is easy to impact the surface of the furniture, so that a paint film is too thick or too thin, or a scattered paint film is formed on the surface of the furniture, and the paint film is extremely uneven; meanwhile, the transfer efficiency (namely the paint utilization rate) of the traditional air spray gun is about 30%, and about 70% of spraying solvent is scattered to the surrounding environment along with flying fog, so that a large amount of paint or coating is wasted, the economic cost is increased, toxic and harmful substances such as voc, benzene, formaldehyde and the like are greatly discharged, the atmosphere and the water body environment are seriously polluted, and the health of constructors is damaged.

So some manufacturers develop airless spray technology (airless) and low spray pressure technology (HVLP), both of which achieve the spray effect of only paint in the spray gun without air, thereby greatly improving the paint utilization rate; because the spray gun has no air, the impact force on the surface of the furniture is small, thereby ensuring the uniformity of a paint film. But the capacities of the two are smaller, and the paint still needs to be added into the coating cylinder after being uniformly mixed, so that the paint is lost in the transferring process, and the defects of inconvenient cleaning and the like exist. In summary, the current airless spray technology (airless) and low spray pressure technology (HVLP) are not mature products of furniture painting equipment and further improvements are needed.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a spraying device for uniformly spraying the surface of furniture and a using method thereof.

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

a spraying device for uniformly spraying paint on the surface of furniture comprises a mixing barrel and a paint spraying pipe, wherein the bottom wall and the side wall of the mixing barrel are both provided with interlayer cavity structures, the paint spraying pipe body is a corrugated pipe, one end of the paint spraying pipe is connected to the bottom wall of the mixing barrel and communicated with the interior of the mixing barrel, the other end of the paint spraying pipe is arranged at the upper part in the interlayer of the side wall of the mixing barrel and is connected with a round pipe, one end of the round pipe is an open end, the other end of the round pipe is a closed end, the open end of the round pipe penetrates through a small ring on the outer side wall of the mixing barrel and is connected with a spray head, the outer ring of the small ring is fixedly connected with the outer side wall of the mixing barrel in a sealing mode through;

the closed end of the circular tube penetrates through a large circular ring on the inner side wall of the mixing barrel and is fixedly connected with a flat rod, the outer ring of the large circular ring is fixedly embedded on the inner side wall of the mixing barrel, the opposite side surfaces of the large circular ring and the small circular ring are connected with each other through a compression spring, one end part, away from the circular tube, of the flat rod is riveted at the eccentric position of a first turbine through a pin shaft, the central position of the first turbine is erected on the inner side wall of the mixing barrel through a fixing shaft, and one end of the fixing shaft is fixed on the inner side wall and the outer side wall of the;

the first worm wheel is meshed with a first worm, the bottom of the first worm is fixedly connected with a stirring blade, the top end of the first worm is fixedly connected with a second worm, the lower part of the second worm is a smooth section and is sleeved on a bearing seat at the center of the top wall of the mixing barrel, the upper part of the second worm is a threaded section and is meshed with an incomplete gear, the number of continuous teeth of the incomplete gear accounts for 1/3-3/7 of a whole circle, an extension spring is sleeved on the smooth section between the threaded section of the second worm and the bearing seat, the top end of the extension spring is fixedly connected with the threaded section of the second worm, the bottom end of the extension spring is fixedly connected with the bearing seat, the center of the incomplete gear is connected with a driving shaft in a penetrating manner, the driving shaft is connected with a motor;

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

an annular vortex plate is arranged below the top wall of the mixing barrel, a gas isolation chamber is formed by the annular vortex plate and the top wall of the mixing barrel, the bottom end of the gas inlet pipe is positioned in the gas isolation chamber, the bottom end of the feed hopper penetrates through the annular vortex plate and is positioned below the annular vortex plate, the central position of the annular vortex plate is in a reducing pipe shape with the diameter gradually reduced from top to bottom, and the top of the second worm is sleeved in a reducing pipe in the center of the annular vortex plate and is not in contact with the annular vortex plate;

a semicircular vortex plate is arranged below the annular vortex plate, the semicircular vortex plate is of a half-cut structure of a plate structure symmetrical to the annular vortex plate, the semicircular vortex plate and the annular vortex plate form an open turbine protection chamber, and the first turbine is positioned in the turbine protection chamber;

a sampling pipe is arranged at the bottom of the side wall of the mixing barrel;

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

Preferably, the large ring and the small ring are connected through 10-16 compression springs, the compression springs are SP 9733 compression springs produced by Prime-Line Products company, the circular tube-small ring-large ring are sleeved to fix the large ring, the small ring is sleeved with the circular tube in a sliding manner, one end of the circular tube rotates around the first turbine to enable the spray head at the other end of the circular tube to generate a pendulum-type twisting track, the small ring plays a supporting and positioning role in the twisting process to enable the direction of the spray head to generate regular change, the spraying direction and the spraying distance of the small ring are limited by a certain area, the spray head is prevented from being disorderly run, compared with manual handheld spraying, the spraying uniformity of the invention is better, the phenomenon that the paint film is too thick or too thin and uneven is avoided, and the invention is to be popularized.

Preferably, the extension spring is a galvanized stainless steel equal-diameter coarse spring, the motor is a low-speed positive and negative motor, the second worm is lifted up by low-speed rotation of the incomplete gear, the second worm rapidly descends under the action of the extension spring, and in the intermittent lifting-descending process, the first worm drives the first turbine to rotate in a reciprocating mode to drive the stirring blades to perform reciprocating spiral precession to generate a stirring and lifting motion mode.

Preferably, the pump is a small air compressor, the pressure value of the pump is 0.1-1.5MPa, and the pump adjusts the internal pressure during painting and cleaning, so that paint liquid quickly washes from the bottom to the spray head during painting, excessive air is prevented from entering the spray head, and the paint utilization rate is further improved.

Preferably, the circular tube and the inner ring of the small circular ring are sleeved smoothly and coated with lubricating oil, so that certain tightness under the low-pressure condition of the sleeving between the circular tube and the small circular ring is ensured, insufficient air pressure in the mixing barrel is avoided, and meanwhile, the air leakage phenomenon can be generated when the air pressure is higher than 0.8MPa, so that the phenomenon of overhigh air pressure in the mixing barrel is avoided; the principle of the mixer is that the sealing performance of the sleeved collar is easily broken by high-pressure airflow.

Preferably, the feeder hopper is equipped with sealed lid, and intake pipe and sampling pipe all are equipped with the electromagnetic switch valve, can keep the whole leakproofness of compounding bucket to control the single trend of lacquer liquid and gas.

The invention also provides a using method of the spraying equipment for uniformly spraying the paint on the surface of the furniture, which comprises the following steps:

a. cleaning treatment: adding a cleaning agent and a foaming agent from a feed hopper for soaking treatment, starting a motor to enable an incomplete gear to rotate at a low speed anticlockwise, wherein the rotating speed is 1-2r/min, lifting a second worm, rapidly descending the second worm under the action of an extension spring, driving a first turbine to rotate in a reciprocating manner by the first worm in an intermittent lifting-descending process, driving a stirring blade to advance in a reciprocating spiral manner to generate a stirring and lifting motion mode, properly opening a flow valve low-flow mode at the moment, enabling the cleaning agent to enter a paint spraying pipe, a round pipe and a spray nozzle so as to clean a mixing barrel and the paint spraying pipe, and discharging a waste liquid after cleaning through a sampling pipe and detecting the residual condition of paint;

b. drying treatment: pumping heated air from an air inlet pipe through a pump, wherein the heated air is supplied by an air heater, the temperature is controlled to be 180-;

c. the material mixing process comprises the following steps: adding a solvent, a paint vehicle and other auxiliary agents from a feed hopper, starting a motor to enable an incomplete gear to rotate at a low speed anticlockwise, wherein the rotating speed is 2-3r/min, repeating the intermittent lifting-descending operation process of the second worm in the step a, stirring for 10-20min, and carrying out needle sampling from a sampling tube to know the solubility, viscosity and uniformity of a paint liquid;

d. and (3) paint spraying process: aligning a spray head to the area of the furniture to be painted, closing all other pipelines, only opening an air inlet pipe, pumping room-temperature dry air through a pump, keeping the pressure in a mixing barrel to be about 0.3MPa, and keeping for 3-5 min; slowly opening the flow valve to enable the paint liquid to rapidly flow into the paint spraying pipe, the round pipe and the spray head, immediately increasing the pressure of the pump to 0.5-0.6MPa, and enabling the spray head to move in a twisting manner to carry out spraying treatment on the surface of the furniture; in the paint spraying process, the mixing barrel is moved through the idler wheels, the slide rails are arranged in the straight-through sliding grooves, and the mixing barrel is moved at a constant speed through the electric cart, so that the whole production line is uniformly sprayed with paint.

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

1. according to the intermittent worm precession structure, the incomplete gear rotates at a low speed through the incomplete gear-second worm-extension spring clearance worm precession structure, the second worm is lifted up, the second worm rapidly descends under the action of the extension spring, and in the intermittent lifting-descending process, the first worm drives the first turbine to rotate in a reciprocating manner to drive the stirring blades to perform reciprocating spiral precession, so that a stirring and lifting motion mode is generated; the stirring mode of the invention has the advantages of low speed, good stirring effect, no generation of a large amount of bubbles, no adverse consequences such as shearing solidification and the like, is beneficial to spraying the paint liquid from the bottom through the air pressure paint liquid on the upper surface, and the air does not basically enter the spray head before the spraying is finished, thereby greatly improving the paint utilization rate of the traditional air spray gun, and simultaneously improving the defects of uneven material mixing and inconvenient cleaning of the existing airless spraying technology and low spraying pressure technology.

2. The large circular ring is fixed through the sleeving arrangement of the circular pipe, the small circular ring and the large circular ring, the small circular ring is sleeved with the circular pipe in a sliding mode, one end of the circular pipe rotates around the first turbine, the spray head at the other end of the circular pipe generates a pendulum-type twisting track, the small circular ring plays a supporting and positioning role in the twisting process, the direction of the spray head is changed regularly, the spray painting direction and distance of the spray head are limited by a certain area, the spray head is prevented from running around, compared with manual handheld spray painting, the spray painting device is better in spray painting uniformity, the phenomenon that a paint film is too thick or too thin and uneven is avoided, and the spray painting device is to be popularized.

3. In the paint spraying process, the mixing barrel can be moved through the idler wheels, the slide rail is arranged in the straight-through chute, and the mixing barrel is moved at a constant speed through the electric cart, so that the whole production line is uniformly sprayed with paint.

Drawings

FIG. 1 is a schematic view of a painting apparatus for the uniform painting of furniture surfaces according to the present invention;

FIG. 2 is a perspective view of a circular tube of the painting equipment for uniformly painting the surface of furniture according to the present invention;

FIG. 3 is a schematic view of a connection structure of a small ring and a large ring of the spraying equipment for uniformly spraying paint on the surface of furniture according to the present invention;

FIG. 4 is a schematic view showing a coupling structure of a partial gear of a painting apparatus for uniformly painting surfaces of furniture according to the present invention.

In the figure: the device comprises a mixing barrel 1, a paint spraying pipe 2, a circular pipe 3, a small circular ring 4, a spray head 5, a flow valve 6, a large circular ring 7, a flat rod 8, a compression spring 9, a first turbine 10, a fixed shaft 11, a first worm 12, a stirring blade 13, a second worm 14, a bearing seat 15, an incomplete gear 16, an extension spring 17, a driving shaft 18, a motor 19, a supporting seat 20, an air inlet pipe 21, a feed hopper 22, a pump 23, an annular vortex plate 24, a semicircular vortex plate 25, a sampling pipe 26, a roller 27 and a straight-through chute 28.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a spraying device for uniformly spraying paint on the surface of furniture, which comprises a mixing barrel 1 and a paint spraying pipe 2, wherein the bottom wall and the side wall of the mixing barrel 1 are both provided with interlayer cavity structures, 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 barrel 1 and communicated with the interior of the mixing barrel 1, the other end of the paint spraying pipe 2 is arranged at the upper part of the interlayer of the side wall of the mixing barrel 1 and connected with a round pipe 3, one end of the round pipe 3 is an open end and the other end is a closed end, the open end of the round pipe 3 penetrates through a small ring 4 on the outer side wall of the mixing barrel 1 and is connected with a spray head 5, the outer ring of the small ring 4 is fixedly connected with the outer side wall of the mixing barrel 1 through rubber cloth in a sealing manner, the spray head 5 is specifically; the closed end of the circular tube 3 penetrates through a large circular ring 7 on the inner side wall of the mixing barrel 1 and is fixedly connected with a flat rod 8, the outer ring of the large circular ring 7 is fixedly embedded on the inner side wall of the mixing barrel 1, the opposite side surfaces of the large circular ring 7 and the small circular ring 4 are mutually connected through a compression spring 9, one end part, far away from the circular tube 3, of the flat rod 8 is riveted at the eccentric position of a first turbine 10 through a pin shaft, the central position of the first turbine 10 is erected on the inner side wall of the mixing barrel 1 through a fixing shaft 11, and one end of the fixing shaft 11 is fixed on the inner side wall and the outer side wall of the mixing; the first turbine 10 is meshed with a first worm 12, the bottom of the first worm 12 is fixedly connected with a stirring blade 13, the top end of the first worm 12 is fixedly connected with a second worm 14, the lower part of the second worm 14 is a smooth section and is sleeved on a bearing seat 15 at the center of the top wall of the mixing barrel 1, the upper part of the second worm 14 is a threaded section and is meshed with an incomplete gear 16, the number of continuous teeth of the incomplete gear 16 accounts for 1/3-3/7 of a whole circle, a tension spring 17 is sleeved on the smooth section between the threaded section of the second worm 14 and the bearing seat 15, the top end of the tension spring 17 is fixedly connected with the threaded section of the second worm 14, the bottom end of the tension spring 17 is fixedly connected with the bearing seat 15, the center of the incomplete gear 16 is connected with a driving shaft 18 in a penetrating manner, the driving shaft 18 is connected with a motor 19, a supporting seat; the top of the mixing barrel 1 is also provided with an air inlet pipe 21 and a feed hopper 22, 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 below the top wall of the mixing barrel 1, a gas isolation chamber is formed by the annular vortex plate 24 and the top wall of the mixing barrel 1, the bottom end of the air inlet pipe 21 is positioned in the gas isolation chamber, the bottom end of the feed hopper 22 penetrates through the annular vortex plate 24 and is positioned below the annular vortex plate 24, the central position of the annular vortex plate 24 is in a reducing pipe shape with the diameter gradually reduced from top to bottom, and the top of the second worm 14 is sleeved in the reducing pipe in the center of the annular vortex plate 24 and is not in contact with the annular vortex plate 24; a semicircular vortex plate 25 is arranged below the annular vortex plate 24, the semicircular vortex plate 25 is of a half-cut structure of a plate structure symmetrical to the annular vortex plate 24, the semicircular vortex plate 25 and the annular vortex plate 24 form an open turbine protection chamber, and the first turbine 10 is positioned in the turbine protection chamber; a sampling pipe 26 is arranged at the bottom of the side wall of the mixing barrel 1; 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 straight-through chute 28 with a concave section.

Referring to fig. 1-3, a large ring 7 and a small ring 4 are connected through 10-16 compression springs 9, the compression springs 9 are specifically SP 9733 compression springs produced by Prime-Line Products, the large ring 7 is fixed by the sleeving of the circular tube-small ring-large ring, the small ring 4 is sleeved with the circular tube 3 in a sliding manner, one end of the circular tube 3 rotates around a first turbine 10, so that a nozzle 5 at the other end of the circular tube 3 generates a pendulum-type twisting track, the small ring 4 has a supporting and positioning function in the twisting process, so that the direction of the nozzle 5 is regularly changed, the spraying direction and distance of the nozzle 5 are limited by a certain area, the nozzle 5 is prevented from running around in a disorderly manner, compared with manual handheld spraying, the spraying uniformity of the invention is better, the phenomenon that the paint film is too thick or too thin and the invention is suitable for popularization.

Referring to fig. 4, the extension spring 17 is a galvanized stainless steel equal-diameter coarse spring, the motor 19 is a low-speed positive and negative motor, the second worm 14 is lifted up by the low-speed rotation of the incomplete gear 16, the second worm 14 is rapidly descended under the action of the extension spring 17, the first worm 12 drives the first turbine 10 to rotate in a reciprocating manner in an reciprocating manner to drive the stirring blade 13 to advance in a reciprocating spiral manner in an intermittent lifting-descending process, and a stirring and material lifting movement mode is generated.

Referring to fig. 1, the pump 23 is a small air compressor, the pressure value is 0.1-1.5MPa, and the pump 23 adjusts the internal pressure during painting and cleaning, so that paint liquid quickly washes from the bottom to the spray nozzle 5 during painting, excessive air is prevented from entering the spray nozzle 5, and the paint utilization rate is further improved.

Referring to fig. 1-2, the circular tube 3 is smoothly sleeved with the inner ring of the small circular ring 4 and is coated with lubricating oil, so that certain sealing performance under a low-pressure condition of sleeving between the circular tube 3 and the small circular ring 4 is ensured, insufficient air pressure inside the mixing barrel 1 is avoided, and meanwhile, air leakage phenomenon can be generated when the pressure is higher than 0.8MPa, so that the phenomenon that the air pressure inside the mixing barrel 1 is too high is avoided, therefore, the novel arrangement of the circular tube, the small circular ring and the large circular ring is not only convenient for rotating one end of the circular tube 3 around the first turbine 10, but also enabling the spray head 5 at the other end of the circular tube 3 to generate a pendulum-type twisting track, so that the uniformity of spray painting is improved; the principle of the device is that the sealing performance of the collar sleeve joint is easy to break by high-pressure airflow and damage.

Referring to fig. 1, the feed hopper 22 is provided with a sealing cover, and the air inlet pipe 21 and the sampling pipe 26 are provided with electromagnetic switch valves, so that the overall sealing performance of the mixing barrel 1 can be maintained, and the single trend of paint liquid and gas can be controlled.

a. cleaning treatment: adding a cleaning agent and a foaming agent from a feed hopper 22 for soaking treatment, starting a motor 19 to enable an incomplete gear 16 to rotate at a low speed in a counterclockwise direction, wherein the rotating speed is 1-2r/min, lifting a second worm 14, rapidly descending the second worm 14 under the action of an extension spring 17, driving a first turbine 10 to rotate in a reciprocating manner by a first worm 12 in an intermittent lifting-descending process, driving a stirring blade 13 to advance in a reciprocating spiral manner to generate a stirring and material lifting movement mode, appropriately opening a flow valve 6 low-flow mode at the moment, enabling the cleaning agent to enter a paint spraying pipe 2, a circular pipe 3 and a spray head 5, cleaning the mixing barrel 1 and the paint spraying pipe 2, and discharging the waste liquid after cleaning through a sampling pipe 26 and detecting the residual condition of paint;

b. drying treatment: pumping heated air from an air inlet pipe 21 through a pump 23, wherein the heated air is supplied by an air heater, the temperature is controlled to be 180-;

c. the material mixing process comprises the following steps: adding solvent, paint and other auxiliary agents from a feed hopper 22, starting a motor 19 to enable an incomplete gear 16 to rotate at a low speed anticlockwise, wherein the rotating speed is 2-3r/min, repeating the intermittent lifting-descending operation process of the second worm 14 in the step a, stirring for 10-20min, and performing needle punching sampling from a sampling pipe 26 to know the solubility, viscosity and uniformity of paint liquid;

d. and (3) paint spraying process: aligning the spray head 5 to the area of the furniture to be painted, closing all other pipelines, only opening the air inlet pipe 21, pumping room-temperature dry air through the pump 23, keeping the pressure in the mixing barrel 1 to be about 0.3MPa, and keeping for 3-5 min; slowly opening the flow valve 6 to enable the paint liquid to rapidly flow into the paint spraying pipe 2, the circular pipe 3 and the spray head 5, immediately increasing the pressure of the pump 23 to 0.5-0.6MPa, and enabling the spray head 5 to move in a twisting mode to carry out spraying treatment on the surface of the furniture; in the paint spraying process, the mixing barrel 1 is moved through the idler wheels 27, the slide rails are arranged in the through slide grooves 28, and the mixing barrel 1 is moved at a constant speed through the electric cart, so that the whole production line is uniformly sprayed with paint.

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

Claims

1. The utility model provides a spraying equipment of furniture surface homogenization usefulness of spraying paint, includes compounding bucket (1) and the pipe (2) that sprays paint, a serial communication port, the intermediate layer cavity structure is all established to the diapire and the lateral wall of compounding bucket (1), spray paint pipe (2) specifically are the bellows, spray paint pipe (2) one end is connected at the diapire position of compounding bucket (1) and is linked together with compounding bucket (1) is inside, spray paint pipe (2) other end sets up at compounding bucket (1) lateral wall clamp intraformational upper portion position and is connected with pipe (3), pipe (3) one end is the open end and the other end is the blind end, the open end of pipe (3) passes little ring (4) on compounding bucket (1) lateral wall and is connected with shower nozzle (5), the outer lane of little ring (4) passes the sealed rigid coupling of lateral wall of rubber blanket and compounding bucket (1), shower nozzle (5) specifically are disc and shower nozzle (5) and one side surface of keeping away from compounding bucket (1) is laid the orifice The part of the circular tube (3) extending out of the mixing barrel (1) is also provided with a flow valve (6);

the closed end of the circular tube (3) penetrates through a large circular ring (7) on the inner side wall of the mixing barrel (1) and is fixedly connected with a flat rod (8), the outer ring of the large circular ring (7) is fixedly embedded on the inner side wall of the mixing barrel (1), the opposite side surfaces of the large circular ring (7) and the small circular ring (4) are connected with each other through a compression spring (9), one end part, far away from the circular tube (3), of the flat rod (8) is riveted to the eccentric position of a first turbine (10) through a pin shaft, the central position of the first turbine (10) is erected on the inner side wall of the mixing barrel (1) through a fixed shaft (11), and one end of the fixed shaft (11) is fixed on the inner side wall and the outer side wall of the mixing barrel (1) through a cross arm;

the first worm wheel (10) is engaged with a first worm (12), the bottom of the first worm (12) is fixedly connected with a stirring blade (13), the top end of the first worm (12) is fixedly connected with a second worm (14), the lower part of the second worm (14) is a smooth section and is sleeved on a bearing seat (15) at the center of the top wall of the mixing barrel (1), the upper part of the second worm (14) is a threaded section and is engaged with an incomplete gear (16), the number of continuous teeth of the incomplete gear (16) accounts for 1/3-3/7 of a whole circle, an extension spring (17) is sleeved on the smooth section between the threaded section of the second worm (14) and the bearing seat (15), the top end of the extension spring (17) is fixedly connected with the threaded section of the second worm (14), the bottom end of the extension spring (17) is fixedly connected with the bearing seat (15), and the center of the incomplete gear (16) is connected with a driving shaft (18) in a penetrating way, the driving shaft (18) is connected with a motor (19), a supporting seat (20) is arranged at the top of the motor (19), and the supporting 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 provided with an air inlet pipe (21) and a feed hopper (22), 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 below the top wall of the mixing barrel (1), a gas isolation chamber is formed by the annular vortex plate (24) and the top wall of the mixing barrel (1), the bottom end of the air inlet pipe (21) is positioned in the gas isolation chamber, the bottom end of the feed hopper (22) penetrates through the annular vortex plate (24) and is positioned below the annular vortex plate (24), the central position of the annular vortex plate (24) is in a reducing pipe shape with the diameter gradually reduced from top to bottom, and the top of the second worm (14) is sleeved in a reducing pipe at the center of the annular vortex plate (24) and is not in contact with the annular vortex plate (24);

a semicircular vortex plate (25) is arranged below the annular vortex plate (24), the semicircular vortex plate (25) is of a half-cut structure which is symmetrical to the annular vortex plate (24) in plate structure, the semicircular vortex plate (25) and the annular vortex plate (24) form an open turbine protection chamber, and the first turbine (10) is positioned in the turbine protection chamber;

a sampling pipe (26) is arranged at the bottom of the side wall of the mixing barrel (1);

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 straight-through chute (28) with a concave section.

2. The painting installation for the homogenized painting of surfaces of furniture according to claim 1, characterised in that said large (7) and small (4) rings are connected by 10-16 compression springs (9), said compression springs (9) being in particular the SP 9733 compression spring manufactured by Prime-Line Products.

3. The painting installation for the homogenized painting of furniture surfaces according to claim 1, characterised in that said tension spring (17) is in particular a galvanized stainless steel constant-diameter coarse spring.

4. The painting installation for the homogenised painting of surfaces of pieces of furniture according to claim 1, characterised in that said motor (19) is in particular a low-speed positive and negative motor.

5. The painting installation for the homogenised painting of surfaces of furniture according to claim 1, characterised in that said pump (23) is in particular a miniature air compressor, with a pressure value of 0.1-1.5 MPa.

6. The painting equipment for the homogenized painting of furniture surfaces according to claim 1, characterized in that said circular tube (3) is sleeved smoothly with the inner ring of the small circular ring (4) and is coated with a lubricating oil.

7. The painting equipment for the homogenized painting of furniture surfaces according to claim 1, characterized in that said feed hopper (22) is provided with a sealing cover, and said intake pipe (21) and sampling pipe (26) are provided with electromagnetic on-off valves.

8. Use of a device for the uniform painting of surfaces of furniture according to claim 1, characterised in that it comprises the following steps:

a. cleaning treatment: adding a cleaning agent and a foaming agent from a feed hopper (22) for soaking treatment, starting a motor (19) to enable an incomplete gear (16) to rotate at a low speed anticlockwise at a rotating speed of 1-2r/min, lifting a second worm (14), rapidly descending the second worm (14) under the action of an extension spring (17), driving a first turbine (10) to rotate in a reciprocating manner by a first worm (12) in an intermittent lifting-descending process, driving a stirring blade (13) to advance in a reciprocating spiral manner to generate a stirring and material lifting movement mode, properly opening a flow valve (6) in a low-flow mode at the moment, enabling the cleaning agent to enter a paint spraying pipe (2), a round pipe (3) and a spray nozzle (5), cleaning a mixing barrel (1) and the paint spraying pipe (2), discharging waste liquid after cleaning through a sampling pipe (26), and detecting the residual condition of paint;

b. drying treatment: pumping heated air from an air inlet pipe (21) through a pump (23), wherein the heated air is supplied by an air heater, the temperature is controlled to be 180-;

c. the material mixing process comprises the following steps: adding solvent, paint and other auxiliary agents from a feed hopper (22), starting a motor (19) to enable an incomplete gear (16) to rotate at a low speed anticlockwise, wherein the rotating speed is 2-3r/min, repeating the intermittent lifting-descending operation process of the second worm (14) in the step a, stirring for 10-20min, and carrying out needle sampling from a sampling pipe (26) to know the solubility, viscosity and uniformity of the paint liquid;

d. and (3) paint spraying process: aligning a spray head (5) to the area of the furniture to be painted, closing all other pipelines, only opening an air inlet pipe (21), pumping room-temperature dry air through a pump (23), keeping the pressure in a mixing barrel (1) to be about 0.3MPa, and keeping for 3-5 min; slowly opening the flow valve (6) to enable paint liquid to rapidly flow into the paint spraying pipe (2), the round pipe (3) and the spray head (5), immediately increasing the pressure of the pump (23) to 0.5-0.6MPa, and enabling the spray head (5) to move in a twisting manner to perform spraying treatment on the surface of furniture; in the paint spraying process, the mixing barrel (1) is moved through the idler wheel (27), a slide rail is arranged in the through chute (28), and the mixing barrel (1) is moved at a constant speed through the electric cart, so that the whole production line is uniformly sprayed with paint.