Surface spraying equipment and method for valve production

Abstract

The invention discloses surface spraying equipment and method for valve production, and relates to the technical field of spraying equipment. Comprising a feeding system, a control system and a rack, two sets of fixing plates are arranged on the rack, a plurality of rollers are installed between the two sets of fixing plates, a conveying belt is installed on the outer sides of the rollers, a plurality of clamping plates are installed on the conveying belt, valves are arranged on the clamping plates, a supporting plate is installed above the conveying belt, and a detection cylinder is installed on the supporting plate; a plurality of first temperature difference plates are arranged on the upper side of the detection cylinder, a paint spraying cylinder is arranged on the lower side of the detection cylinder, a paint storage box is connected to one side of the paint spraying cylinder, a drying box is installed on the other side of the paint spraying cylinder, a stirring shaft is installed in the paint storage box, a plurality of mixing plates are arranged on the stirring shaft, and spray paint is heated and mixed through rotation and revolution of the mixing plates. The mixing effect is improved, the sprayed paint is uniformly heated, and the problem of coagulation and blocking is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of spraying equipment, in particular to a surface spraying equipment and method for valve production. Background Art

[0002] ‌Valve spray painting equipment is a special equipment used for spraying paint on the valve surface during the valve production and processing process. It mainly includes key equipment such as valve accumulation spray painting line and spray equipment curing oven. The valve accumulation spray painting line, with its accumulation design and unique valve control technology, realizes the precise control and uniform spraying of paint or coating, and improves the spraying quality and efficiency. The spray equipment curing oven heats and cures the sprayed product through advanced heating technology and excellent thermal insulation performance, ensuring that the coating can better adhere to the product surface, improving the corrosion resistance, aesthetics and service life of the product.

[0003] The existing valve painting equipment has the following main problems: (1) the sprayed paint easily condenses into lumps, resulting in poor painting effect; (2) the paint is not mixed evenly, which makes it difficult to meet the painting needs of the valve. Summary of the invention

[0004] The object of the present invention is to provide a surface spraying device and method for valve production to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a surface spraying device for valve production, including a feeding system and a control system, the spraying device including a frame, two groups of fixed plates are arranged on the frame, a plurality of rollers are installed between the two groups of fixed plates, a plurality of conveyor belts are installed outside the plurality of rollers, a plurality of clamping plates are installed on the conveyor belts, a valve is arranged on the clamping plates, a support plate is installed above the conveyor belt, a detection cylinder is installed on the support plate, a plurality of first temperature difference plates are arranged on the upper side of the detection cylinder, a paint spraying cylinder is arranged on the lower side of the detection cylinder, a paint storage box is connected to one side of the paint spraying cylinder, a drying box is installed on the other side of the paint spraying cylinder, a stirring shaft is installed in the paint storage box, and a plurality of mixing plates are arranged on the stirring shaft; The feeding system and the clamping plate cooperate to clamp the valve, the stirring shaft and the mixing plate mix and heat the paint, the paint spraying cylinder sprays paint on the valve, and the drying box dries the valve after painting.

[0006] The support plate is installed on the frame, the paint storage box is hollow inside and is arranged on the support plate, and spray paint is stored in the paint storage box. Both ends of the stirring shaft are rotatably installed on the paint storage box through bearings, and a plurality of transverse shafts are arranged on the stirring shaft. The stirring shaft and the plurality of transverse shafts are hollow inside, and the interior of the stirring shaft and the interior of the transverse shaft are connected to each other. The inner walls and outer walls of the plurality of transverse shafts are respectively provided with a first spiral groove and a second spiral groove, and the first spiral groove and the second spiral groove are both spirally distributed. After the stirring shaft passes through the paint storage box, it is connected to the output end of the driving motor, and the driving motor is installed on the paint storage box; A movable plate is installed inside several of the horizontal shafts, and several movable shafts are arranged on the outside of the movable plates. Several of the movable shafts are inserted into the first spiral groove. The movable plates slide inside the horizontal shafts through the cooperation of the movable shafts and the first spiral grooves. A rotating plate is rotatably installed on one side of the movable plate through a bearing, and a reset tension spring is connected between the rotating plate and the stirring shaft.

[0007] The mixing plate is provided with a through slot, the mixing plate is sleeved on the horizontal axis through the through slot, a plurality of sliding shafts are provided on the mixing plate in the through slot, the plurality of sliding shafts are respectively inserted into the second spiral groove, the mixing plate slides on the horizontal axis through the sliding shaft and the second spiral groove, the inside of the mixing plate is made of magnetic shielding material, and the outside of the mixing plate is made of metal material; A coil is buried on the inner wall of the paint storage box, and both ends of the coil are electrically connected to the control system. A filling port and a paint discharge port are respectively provided at the upper and lower ends of the paint storage box. The paint discharge port is connected to the inlet of a vacuum pump through a pipeline, and the outlet of the vacuum pump is connected to a paint spray tube. The vacuum pump is installed on a support plate.

[0008] A first magnet is arranged between two adjacent moving shafts, a second magnet is arranged between two adjacent sliding shafts, a plurality of the first magnets are respectively opposite to a plurality of the second magnets, and the polarities of the opposite sides of the first magnet and the second magnet are different.

[0009] A plurality of carrier plates are arranged on the conveyor belt, a plurality of support plates are vertically arranged on the carrier plates, a plurality of sliding grooves are arranged on the support plates, a plurality of clamping plates are respectively slidably installed in the plurality of sliding grooves, a first spring is connected between the clamping plates and the support plates, and a plurality of the clamping plates are adapted to the interior of the valve.

[0010] The detection tube and the paint spray tube are hollow inside, and the insides of the detection tube and the paint spray tube are adapted to the shape of the valve. The detection tube is connected to a telescopic rod of a lifting electric cylinder, and the lifting electric cylinder is installed on a support plate, and a plurality of second temperature difference plates are arranged on the support plate; The drying box is installed on the support plate, the interior of the drying box is hollow, a fan blade is installed in the drying box, the middle of the fan blade is connected to the output shaft of the rotating motor, the rotating motor is installed on the drying box, a plurality of refrigeration plates are arranged on the inner wall of the drying box, and a plurality of air inlets and a plurality of air outlets are respectively arranged on the top and bottom of the drying box.

[0011] A plurality of the first temperature difference plates and a plurality of the second temperature difference plates correspond one to one, the first temperature difference plate, the second temperature difference plate and the refrigeration plate are all provided with a metal plate and two semiconductors of different materials, one end of the two semiconductors of different materials are connected to the metal plate, the two semiconductors on the first temperature difference plate and the two semiconductors on the second temperature difference plate are connected by wires, one of which is connected to a control system, and the two semiconductors on the refrigeration plate are connected to the control system by wires.

[0012] A plurality of paint spray holes are arranged on the lower side and the inner wall of the paint spray tube, a check valve is arranged in each of the plurality of paint spray holes, and a plurality of the paint spray holes are directly opposite to the valve; The inside of the stirring shaft is connected to the outlet of the air slip ring through a pipeline, the inlet of the air slip ring passes through the paint storage box through a pipeline and is connected to the pressure pump, the air slip ring is sleeved on the stirring shaft, and the air slip ring and the pressure pump are both installed on the paint storage box; The paint storage box, paint spray barrel and drying box are all provided with temperature sensors, the filling port, paint discharge port and outlet of the air slip ring are all installed with solenoid valves and flow meters, and the temperature sensors, solenoid valves and flow meters are all electrically connected to the control system.

[0013] The interior of the drum is an electric drum structure, the drum and the rotating motor are both equipped with built-in encoders, a control panel is arranged on the frame, and the control system is arranged in the control panel.

[0014] A surface spraying method for valve production, using a surface spraying device for valve production, and including the following spraying method: S1, convey the valve through the feeding system and the roller; S2, the mixing board mixes and heats the spray paint; S3, the paint spraying tube sprays paint on the valve through the paint spraying hole; S4. Use drying box to quickly dry the valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Paint mixing treatment improves the valve painting effect. Several first magnets move and rotate with the moving plate, several first magnets drive several second magnets to move and rotate, several second magnets drive the mixing plate to move and rotate, the mixing plate rotates, revolves and moves on the horizontal axis through the sliding shaft and the second spiral groove, and the paint is heated and mixed through the rotation and revolution of the mixing plate, which improves the mixing effect, makes the paint heated evenly, and avoids the problem of condensation.

[0017] 2. Check whether the valve is missing during painting, and recycle the heat generated during the painting of the valve to reduce the energy consumption of the painting equipment. The two semiconductors and metal plates on the second temperature difference plate are the cold ends of the Seebeck effect. Since the first temperature difference plate is close to the valve after painting, and the paint has a certain temperature, the hot end and the cold end generate current through the Seebeck effect and transmit it to the control system. The control system detects the magnitude of the current and compares it with the set current in the control system; when the detected current differs greatly from the set current, it means that the valve has a position where the paint is missing; when the detected current is basically consistent with the set current, it means that the valve has no position where the paint is missing. By detecting the current generated by the Seebeck effect, it is known whether the paint is missing, and the heat generated during the valve painting is recycled to reduce the energy consumption of the painting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 Top view after removing the second temperature difference plate; Figure 3 yes Figure 2 Sectional view at the AA position; Figure 4 yes Figure 3 A partial enlarged view of the middle B area; Figure 5 yes Figure 3 Bottom view of the middle and upper side structure; Figure 6 It is a schematic diagram of the internal structure of the detection tube and the paint spray tube; Figure 7 It is a schematic diagram of the internal structure of the drying box; Figure 8 It is a schematic diagram of the installation structure of the fixed plate, conveyor belt, clamping plate and support plate; Fig. 9 It is a schematic diagram of the internal structure of the paint storage box; Fig.10 It is a schematic diagram of the structure of the hybrid plate; Fig.11 It is a schematic diagram of the structure of the horizontal axis; Fig.12It is a schematic diagram of the installation structure of the reset tension spring, the rotating plate, the moving plate and the moving shaft.

[0019] In the figure: 1. control panel; 11. frame; 111. fixed plate; 112. roller; 113. conveyor belt; 114. clamping plate; 115. support plate; 12. loading plate; 121. support plate; 2. detection cylinder; 201. first temperature difference plate; 202. paint spraying cylinder; 203. second temperature difference plate; 21. lifting electric cylinder; 3. paint storage box; 301. coil; 302. filling port; 303. paint discharge port; 31. stirring shaft; 32. horizontal axis; 321. first spiral groove; 322. second spiral groove; 33. moving plate; 331. moving shaft; 34. rotating plate; 341. reset tension spring; 35. mixing plate; 351. sliding shaft; 36. driving motor; 4. drying box; 41. fan blade; 42. rotating motor; 43. cooling plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example: Figure 1-Figure 12 As shown, the present invention provides a technical solution of a surface spraying device and method for valve production, including a feeding system (not shown in the figure), a control system and a frame 11, two sets of fixed plates 111 are arranged on the frame 11, a plurality of rollers 112 are installed between the two sets of fixed plates 111, the inside of the rollers 112 is an electric roller structure, a conveyor belt 113 is installed outside the plurality of rollers 112, a plurality of clamping plates 114 are installed on the conveyor belt 113, a valve (not shown in the figure) is arranged on the clamping plate 114, a support plate 115 is installed above the conveyor belt 113, and a detection cylinder 2 is installed on the support plate 115 A plurality of first temperature difference plates 201 are arranged on the upper side of the detection cylinder 2, a paint spray cylinder 202 is arranged on the lower side of the detection cylinder 2, one side of the paint spray cylinder 202 is connected to a paint storage box 3, and a drying box 4 is installed on the other side of the paint spray cylinder 202. A stirring shaft 31 is installed in the paint storage box 3, and a plurality of mixing plates 35 are arranged on the stirring shaft 31; the feeding system and the clamping plate 114 cooperate to clamp the valve, the stirring shaft 31 and the mixing plate 35 mix and heat the paint, the paint spray cylinder 202 sprays paint on the valve, and the drying box 4 dries the valve after painting. A control panel 1 is arranged on the frame 11, and the control system is arranged in the control panel 1.

[0022] The support plate 115 is mounted on the frame 11, the paint storage box 3 is hollow inside and is arranged on the support plate 115, the paint storage box 3 stores spray paint, both ends of the stirring shaft 31 are rotatably mounted on the paint storage box 3 through bearings, a plurality of transverse shafts 32 are arranged on the stirring shaft 31, the stirring shaft 31 and the plurality of transverse shafts 32 are both hollow inside, the interior of the stirring shaft 31 and the interior of the transverse shaft 32 are connected to each other, the inner wall and the outer wall of the plurality of transverse shafts 32 are respectively provided with a first spiral groove 321 and a second spiral groove 322, the first spiral groove 321 and the second spiral groove 322 are both spiral divisions After the stirring shaft 31 passes through the paint storage box 3, it is connected to the output end of the driving motor 36, and the driving motor 36 is installed on the paint storage box 3; a plurality of horizontal shafts 32 are installed with moving plates 33, and a plurality of moving shafts 331 are arranged on the outside of the moving plates 33, and a plurality of moving shafts 331 are inserted into the first spiral groove 321. The moving plate 33 slides inside the horizontal shaft 32 through the cooperation of the moving shaft 331 and the first spiral groove 321. A rotating plate 34 is rotatably installed on one side of the moving plate 33 through a bearing, and a reset tension spring 341 is connected between the rotating plate 34 and the stirring shaft 31.

[0023] A through groove is provided on the mixing plate 35, and the mixing plate 35 is sleeved on the horizontal shaft 32 through the through groove. A plurality of sliding shafts 351 are provided on the mixing plate 35 in the through groove, and the plurality of sliding shafts 351 are respectively inserted into the second spiral groove 322. The mixing plate 35 slides on the horizontal shaft 32 through the sliding shaft 351 and the second spiral groove 322. The inside of the mixing plate 35 is made of magnetic shielding material, and the outside of the mixing plate 35 is made of metal material; a coil 301 is buried on the inner wall of the paint storage box 3, and both ends of the coil 301 are electrically connected to the control system. The upper and lower ends of the paint storage box 3 are respectively provided with a filling port 302 and a paint discharge port. Port 303, the paint discharge port 303 is connected to the inlet of a vacuum pump (not shown in the figure) through a pipeline, the outlet of the vacuum pump is connected to the paint spray tube 202, and the vacuum pump is installed on the support plate 115; a first magnet (not shown in the figure) is arranged between two adjacent movable shafts 331, and a second magnet (not shown in the figure) is arranged between two adjacent sliding shafts 351, and a plurality of first magnets are respectively opposite to a plurality of second magnets, and the polarities of the opposite sides of the first magnet and the second magnet are different, and the magnetic fields of the first magnet and the second magnet are separated from the magnetic field of the coil 301 by the magnetic shielding material on the mixing plate 35.

[0024] A plurality of carrier plates 12 are arranged on the conveyor belt 113, support plates 121 are vertically arranged on the plurality of carrier plates 12, a plurality of sliding grooves are arranged on the support plates 121, a plurality of clamping plates 114 are slidably installed in the plurality of sliding grooves respectively, a first spring is connected between the clamping plates 114 and the support plates 121, and the plurality of clamping plates 114 are adapted to the interior of the valve.

[0025] The detection tube 2 and the paint spraying tube 202 are hollow inside, and the insides of the detection tube 2 and the paint spraying tube 202 are adapted to the shape of the valve. The detection tube 2 is connected to the telescopic rod of the lifting electric cylinder 21, and the lifting electric cylinder 21 is installed on the support plate 115. A plurality of second temperature difference plates 203 are arranged on the support plate 115; the drying box 4 is installed on the support plate 115, and the interior of the drying box 4 is hollow. A fan blade 41 is installed in the drying box 4, and the middle of the fan blade 41 is connected to the output shaft of the rotating motor 42, and the rotating motor 42 is installed on the drying box 4. The drum 112 and the rotating motor 42 are both equipped with encoders, and a plurality of refrigeration plates 43 are arranged on the inner wall of the drying box 4. A plurality of air inlets and Several air outlet holes; several paint spray holes are arranged on the lower side and inner wall of the paint spray tube 202, several of the paint spray holes are arranged with one-way valves, and several of the paint spray holes are facing the valve; the inside of the stirring shaft 31 is connected with the outlet of the air slip ring through a pipeline, and the inlet of the air slip ring passes through the paint storage box 3 through a pipeline and is connected with the booster pump (not shown in the figure), the air slip ring (not shown in the figure) is sleeved on the stirring shaft 31, and the air slip ring and the booster pump are both installed on the paint storage box 3; temperature sensors are arranged in the paint storage box 3, the paint spray tube 202 and the drying box 4, and electromagnetic valves and flow meters are installed in the filling port 302, the paint discharge port 303 and the outlet of the air slip ring, and the temperature sensor, the electromagnetic valve and the flow meter are all electrically connected to the control system.

[0026] A plurality of first temperature difference plates 201 and a plurality of second temperature difference plates 203 correspond one to one. The first temperature difference plate 201, the second temperature difference plate 203 and the refrigeration plate 43 are all provided with metal plates and semiconductors of two different materials. One end of the semiconductors of the two different materials is connected to the metal plate. The two semiconductors on the first temperature difference plate 201 and the two semiconductors on the second temperature difference plate 203 are connected by wires, one of which is connected to the control system. The two semiconductors on the refrigeration plate 43 are connected to the control system through wires.

[0027] A surface spraying method for valve production, using a surface spraying device for valve production, and including the following spraying method: S1, conveying the valve through the feeding system and the roller 112; S2, the mixing plate 35 mixes and heats the spray paint; S3, the paint spraying tube 202 sprays paint on the valve through the paint spraying hole; S4, drying box 4 quickly dries the valve.

[0028] Working principle: Press the start button on the control panel 1, the spraying equipment starts, the feeding system transports the valve to the support plate 121, and drives the valve to move downward through the feeding system. The valve pushes several clamping plates 114 to slide into the sliding groove. The clamping plates 114 compress the first spring at the same time. Multiple clamping plates 114 clamp the valve to facilitate subsequent painting and drying processes.

[0029] When the spraying equipment is started, the control system connects the two ends of the coil 301 to the circuit, and drives the stirring shaft 31 to rotate through the driving motor 36. The stirring shaft 31 drives the mixing plate 35 to revolve. The metal material on the outside of the mixing plate 35 cuts the magnetic flux lines in the magnetic field of the coil 301. When the mixing plate 35 is heated, the heat is transferred to the paint. Through the revolution and heating of the mixing plate 35, the paint in the paint storage box 3 is fully mixed and heated evenly, avoiding the problem of condensation into lumps.

[0030] While the driving motor 36 drives the mixing plate 35 to revolve through the stirring shaft 31, the encoder in the driving motor 36 feeds back the revolving data of the mixing plate 35 to the control system, and the control system opens the solenoid valve in the outlet of the air slip ring, and pressurizes the external air through the pressure pump and transports it to the inside of the stirring shaft 31 through the pipeline and the air slip ring. The pressurized air flows through the stirring shaft 31 to the inside of the horizontal shaft 32, and the pressurized air pushes the moving plate 33 to move away from the stirring shaft 31. Since the plurality of moving shafts 331 outside the moving plate 33 are inserted into the first spiral groove 321, the moving plate 33 is The plate 33 rotates while moving, and the moving plate 33 drives the rotating plate 34 to move along, and the rotating plate 34 stretches the reset tension spring 341 at the same time, and a number of first magnets move and rotate along with the moving plate 33, and a number of first magnets drive a number of second magnets to move and rotate, and a number of second magnets drive the mixing plate 35 to move and rotate, and the mixing plate 35 rotates, revolves and moves on the horizontal axis 32 through the sliding shaft 351 and the second spiral groove 322, and the paint is heated and mixed by the rotation and revolution of the mixing plate 35, thereby improving the mixing effect and making the paint heated evenly.

[0031] When the mixing plate 35 moves to the outermost end of the horizontal axis 32, the pressure sensor in the pressure pump feeds back the pressure data of the pressurized air to the control system, and the control system controls the pressure pump to connect with the external air and be in a normal pressure state. At this time, the reset spring 341 is released, and the reset spring 341 pulls the rotating plate 34 to move toward the side of the stirring shaft 31, and the rotating plate 34 drives the moving plate 33 to move toward the side of the stirring shaft 31. Since several moving shafts 331 on the moving plate 33 are inserted into the first spiral groove 321, the moving plate 33 moves and rotates in the opposite direction. Several first magnets follow the moving plate 33 to move and rotate, and several first magnets drive several second magnets to move and rotate, and several second magnets drive the mixing plate 35 to move and rotate in the opposite direction, which further helps the mixing of the paint and makes the paint heated more evenly.

[0032] When the valve is clamped by the clamping plate 114, the feeding system feeds back the displacement data of the valve to the control system. The control system drives the conveyor belt 113 to move right through the roller 112, and the conveyor belt 113 drives the carrier plate 12 to move right. The carrier plate 12 drives the support plate 121, the clamping plate 114 and the clamped valve to move right, so that the clamped valve moves to the top of the paint spray barrel 202.

[0033] When the clamped valve moves to the bottom of the paint spray tube 202, the encoder inside the roller 112 feeds back the displacement data of the valve to the control system, and the control system drives the detection tube 2 and the paint spray tube 202 to move downward through the lifting electric cylinder 21. At this time, the solenoid valve in the pipeline between the paint discharge port 303 and the vacuum pump opens and the vacuum pump works. The vacuum pump transports the paint in the paint storage box 3 to the paint spray tube 202 through the paint discharge port 303 and the vacuum pump. The pressure in the paint spray tube 202 continues to increase, the one-way valve in the paint spray hole opens, and the paint is sprayed on the valve through the paint spray hole, thereby realizing the surface spraying treatment of the valve.

[0034] When the lifting electric cylinder 21 drives the paint spraying tube 202 to spray the valve, at this time, the detection tube 2 is located on the outside of the valve, and the first temperature difference plate 201 on the detection tube 2 is adapted to the shape of the valve. Several first temperature difference plates 201 are close to the valve after spraying. The control system connects the two semiconductors on the first temperature difference plate 201 and the second temperature difference plate 203 to the circuit. The two semiconductors and the metal plate on the first temperature difference plate 201 are the hot ends of the Seebeck effect, and the two semiconductors and the metal plate on the second temperature difference plate 203 are the cold ends of the Seebeck effect. Since the first temperature difference plate 201 is close to the valve after spraying and the paint has a certain temperature, the hot end and the cold end generate current through the Seebeck effect and transmit it to the control system. The control system detects the magnitude of the current and compares it with the set current in the control system; when the detected current is significantly different from the set current, that is, the valve has a position where the paint is leaking, at this time, the control system will alarm to remind the staff; when the detected current is basically consistent with the set current, that is, the valve has no position where the paint is leaking.

[0035] When the control system determines whether the valve has paint leakage, the control system will transform and rectify the current generated by the Seebeck effect for reuse. The control system will simultaneously control the lifting electric cylinder 21 to drive the detection cylinder 2 and the paint spray cylinder 202 to move upward to prevent the paint spray cylinder 202 from interfering with the movement of the valve. Afterwards, the staff will remove the valve that has leaked paint, and continue to drive the valve that has no paint leakage to move to the right through the roller 112, so that the valve that has no paint leakage is moved to the bottom of the drying box 4.

[0036] When the valve moves to the bottom of the drying box 4, the encoder in the drum 112 feeds back data to the control system. The control system drives the fan blade 41 to rotate through the rotating motor 42, and connects the two semiconductors on the refrigeration plate 43 to the circuit. The two semiconductors and the metal plate on the refrigeration plate 43 are the refrigeration end of the Peltier effect. The temperature of the valve drying is adjusted by the refrigeration end. The fan blade 41 drives the external air to enter through the air inlet, and reaches the set temperature through the refrigeration end, and then blows onto the valve from the air outlet to speed up the drying of the valve. After the valve is dried by the drying box 4, the drum 112 continues to drive the valve to move to the right. At this time, the staff removes the valve through the feeding system.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A surface spraying equipment for valve production, including a feeding system and a control system, characterized in that: The spraying equipment comprises a frame (11), two groups of fixed plates (111) are arranged on the frame (11), a plurality of rollers (112) are installed between the two groups of fixed plates (111), a conveyor belt (113) is installed outside the plurality of rollers (112), a plurality of clamping plates (114) are installed on the conveyor belt (113), a valve is arranged on the clamping plate (114), a support plate (115) is installed above the conveyor belt (113), and the plurality of rollers (112) are installed outside the plurality of rollers (112). A detection cylinder (2) is installed on the support plate (115), a plurality of first temperature difference plates (201) are arranged on the upper side of the detection cylinder (2), a paint spray cylinder (202) is arranged on the lower side of the detection cylinder (2), one side of the paint spray cylinder (202) is connected to a paint storage box (3), a drying box (4) is installed on the other side of the paint spray cylinder (202), a stirring shaft (31) is installed in the paint storage box (3), and a plurality of mixing plates (35) are arranged on the stirring shaft (31); The feeding system and the clamping plate (114) cooperate to clamp the valve, the stirring shaft (31) and the mixing plate (35) mix and heat the paint, the paint spraying barrel (202) sprays paint on the valve, and the drying box (4) dries the valve after painting.

2. The surface spraying equipment for valve production according to claim 1 is characterized in that: The support plate (115) is mounted on the frame (11); the paint storage box (3) is hollow inside and is arranged on the support plate (115); the paint storage box (3) stores spray paint; both ends of the stirring shaft (31) are rotatably mounted on the paint storage box (3) via bearings; a plurality of transverse shafts (32) are arranged on the stirring shaft (31); the stirring shaft (31) and the plurality of transverse shafts (32) are both hollow inside; the interior of the stirring shaft (31) and the interior of the transverse shaft (32) are interconnected; the inner walls and outer walls of the plurality of transverse shafts (32) are respectively provided with a first spiral groove (321) and a second spiral groove (322); the first spiral groove (321) and the second spiral groove (322) are both spirally distributed; the stirring shaft (31) is connected to the output end of a drive motor (36) after passing through the paint storage box (3); the drive motor (36) is mounted on the paint storage box (3); A plurality of movable plates (33) are installed inside the transverse shafts (32), a plurality of movable shafts (331) are arranged outside the movable plates (33), a plurality of movable shafts (331) are inserted into the first spiral groove (321), a rotating plate (34) is rotatably installed on one side of the movable plate (33) via a bearing, and a return tension spring (341) is connected between the rotating plate (34) and the stirring shaft (31).

3. The surface spraying equipment for valve production according to claim 2 is characterized in that: The mixing plate (35) is provided with a through slot, the mixing plate (35) is sleeved on the transverse shaft (32) through the through slot, a plurality of sliding shafts (351) are provided on the mixing plate (35) in the through slot, and the plurality of sliding shafts (351) are respectively inserted into the second spiral slot (322), the interior of the mixing plate (35) is made of a magnetic shielding material, and the exterior of the mixing plate (35) is made of a metal material; A coil (301) is embedded in the inner wall of the paint storage box (3), and both ends of the coil (301) are electrically connected to a control system. A filling port (302) and a paint discharge port (303) are respectively provided at the upper and lower ends of the paint storage box (3), and the paint discharge port (303) is connected to the inlet of a vacuum pump via a pipeline. The outlet of the vacuum pump is connected to a paint spraying cylinder (202), and the vacuum pump is mounted on a support plate (115).

4. The surface spraying equipment for valve production according to claim 3 is characterized in that: A first magnet is arranged between two adjacent movable shafts (331), a second magnet is arranged between two adjacent sliding shafts (351), a plurality of the first magnets are respectively opposite to a plurality of the second magnets, and the polarities of the opposite sides of the first magnet and the second magnet are different.

5. The surface spraying equipment for valve production according to claim 4 is characterized in that: A plurality of carrier plates (12) are arranged on the conveyor belt (113), a plurality of support plates (121) are vertically arranged on the carrier plates (12), a plurality of sliding grooves are arranged on the support plates (121), a plurality of clamping plates (114) are slidably installed in the plurality of sliding grooves respectively, a first spring is connected between the clamping plates (114) and the support plates (121), and the plurality of clamping plates (114) are mutually adapted to the interior of the valve.

6. The surface spraying equipment for valve production according to claim 5 is characterized in that: The detection tube (2) and the paint spray tube (202) are hollow inside, and the insides of the detection tube (2) and the paint spray tube (202) are mutually compatible with the appearance of the valve; the detection tube (2) is connected to a telescopic rod of a lifting electric cylinder (21); the lifting electric cylinder (21) is mounted on a support plate (115); and a plurality of second temperature difference plates (203) are arranged on the support plate (115); The drying box (4) is mounted on the support plate (115); the interior of the drying box (4) is hollow; a fan blade (41) is mounted in the drying box (4); the middle of the fan blade (41) is connected to the output shaft of a rotating motor (42); the rotating motor (42) is mounted on the drying box (4); a plurality of cooling plates (43) are arranged on the inner wall of the drying box (4); and a plurality of air inlet holes and a plurality of air outlet holes are respectively arranged on the top and bottom of the drying box (4).

7. The surface spraying equipment for valve production according to claim 6 is characterized in that: A plurality of the first temperature difference plates (201) and a plurality of the second temperature difference plates (203) correspond one to one; a metal plate and two semiconductors of different materials are provided on the first temperature difference plate (201), the second temperature difference plate (203) and the refrigeration plate (43); one end of the semiconductors of two different materials are connected to the metal plate; the two semiconductors on the first temperature difference plate (201) and the two semiconductors on the second temperature difference plate (203) are connected via wires, one of which is connected to a control system; and the two semiconductors on the refrigeration plate (43) are connected to the control system via wires.

8. The surface spraying equipment for valve production according to claim 7 is characterized in that: The paint spraying tube (202) is provided with a plurality of paint spraying holes on its lower side and inner wall, each of the plurality of paint spraying holes is provided with a one-way valve, and a plurality of the paint spraying holes are directly opposite to the valve; The interior of the stirring shaft (31) is connected to the outlet of the air slip ring through a pipeline, the inlet of the air slip ring passes through the pipeline out of the paint storage box (3) and is connected to the pressure pump, the air slip ring is sleeved on the stirring shaft (31), and the air slip ring and the pressure pump are both installed on the paint storage box (3); The paint storage box (3), the paint spraying tube (202) and the drying box (4) are all provided with temperature sensors, and the filling port (302), the paint discharge port (303) and the outlet of the air slip ring are all installed with electromagnetic valves and flow meters, and the temperature sensors, electromagnetic valves and flow meters are all electrically connected to the control system.

9. The surface spraying equipment for valve production according to claim 8, characterized in that: The interior of the drum (112) is an electric drum structure, the drum (112) and the rotary motor (42) are both equipped with encoders, a control panel (1) is provided on the frame (11), and the control system is provided in the control panel (1).

10. A spraying method applied to a surface spraying equipment for valve production as claimed in any one of claims 1 to 9, characterized in that: The spraying method comprises the following specific steps: S1, conveying the valve through a feeding system and a roller (112); S2, a mixing plate (35) mixes and heats the spray paint; S3, a paint spraying tube (202) sprays paint on the valve through the paint spraying hole; S4. Drying box (4) quickly dries the valve.

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