Anode mold dry powder electrostatic spraying device

Abstract

The invention relates to the technical field of anode mold surface treatment, in particular to an anode mold dry powder electrostatic spraying device which comprises a bearing frame, a screw feeder is arranged on the bearing frame, and a drum screening machine is arranged on one side of the screw feeder. The spiral feeding machine is responsible for feeding, the roller screening machine screens materials and then feeds the materials into the spraying mechanism, the spraying mechanism treats the materials and conveys the treated materials to the spraying gun mechanism for spraying, the material recycling mechanism can recycle barium sulfate dry powder accumulated at the bottom of a spraying tank, material recycling is achieved, cost is reduced, and the energy-saving and environment-friendly effects are achieved. The air supply dehumidification device provides dry air for the spraying process, the situation that the dry powder electrostatic spraying effect is affected due to the air humidity problem is avoided, the dry powder is prevented from being affected with damp, and the adhesiveness of the dry powder is affected is prevented, the spray gun mechanism evenly sprays the processed dry powder material on the surface of the anode mold in an electrostatic spraying mode, and then the dry powder electrostatic spraying operation of the anode mold is completed. Therefore, the surface treatment quality of the anode mold is improved.

Description

Technical Field

[0001] The invention relates to a spraying device, in particular to an anode mold dry powder electrostatic spraying device, belonging to the technical field of anode mold surface treatment. Background Art

[0002] Dry powder electrostatic spraying technology is applied to the anode plate casting production process in the copper smelting industry. The main equipment in the copper anode plate casting process is the disc casting unit. Anode mold spraying is an equipment component of the disc casting unit. Anode mold spraying is an important link in the copper anode plate production process. The quality of spraying directly determines the difficulty of demoulding the anode plate after forming and the appearance quality of the anode plate.

[0003] Barium sulfate is used as a release agent for anode mold spraying. Traditional anode mold spraying uses a stirring tank and a spray pneumatic pump box to mix and stir barium sulfate and water, which is conducive to the pneumatic diaphragm pump to absorb the mixture and spray it on the inner surface of the anode mold through a nozzle. After the anode mold is sprayed, the thickness of barium sulfate attached to the surface is large and uneven, and contains water, which leads to more impurities in the anode plate after casting and the formation of pores, thereby reducing the quality of the copper anode plate and easily causing adverse effects on subsequent electrolysis and other processes.

[0004] Therefore, it is urgent to improve the anode mold dry powder electrostatic spraying device to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an anode mold dry powder electrostatic spraying device, in which a spiral feeder is responsible for feeding, a drum screening machine screens the material and then sends it to a spraying mechanism, the spraying mechanism processes the material and transports the processed material to a spray gun mechanism for spraying, and a material recovery mechanism can recover the barium sulfate dry powder accumulated at the bottom of the spray tank, thereby realizing material recycling and reducing costs, and an air supply and dehumidification device provides dry gas for the spraying process to avoid affecting the dry powder electrostatic spraying effect due to gas humidity problems and preventing the dry powder from being affected by moisture and affecting its adhesion, while the spray gun mechanism sprays the processed dry powder material evenly on the surface of the anode mold by electrostatic spraying, thereby completing the anode mold dry powder electrostatic spraying operation, thereby improving the surface treatment quality of the anode mold.

[0006] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present invention includes: an anode mold dry powder electrostatic spraying device, comprising a carrier, a screw feeder is fixedly installed on the carrier, a drum screening machine is arranged on one side of the screw feeder, a spraying mechanism is arranged below the drum screening machine, a material recovery mechanism is arranged on one side of the spraying mechanism, an air supply and dehumidification device is arranged below the material recovery mechanism, and a spray gun mechanism is arranged on one side of the air supply and dehumidification device; The spray mechanism includes a spray tank, a feed port of the spray tank is provided with a pneumatic butterfly valve, and a orifice plate is provided inside the spray tank, a level detection mechanism is provided above the orifice plate, one side of the spray tank is fixedly connected with a discharge pipe, and the other side of the spray tank is fixedly connected with a return pipe, an air inlet pipe is provided below the return pipe, a ventilation pipe is provided above the return pipe, a ball valve is fixedly installed on the ventilation pipe, the air inlet pipe and the ventilation pipe are both connected to the spray tank, and the lower end of the spray tank is fixedly connected with a discharge pipe.

[0007] Preferably, the drum screening machine includes a screening drum, which is fixedly mounted on the supporting frame, one end of the screening drum is fixedly connected to a collecting hopper, one side of the collecting hopper is provided with a discharge hopper, one end of the discharge hopper is connected to the screening drum, and the other end of the discharge hopper is connected to the feed port of the spray tank, and a plurality of evenly distributed heating coils are fixedly connected to the inner side of the screening drum.

[0008] Preferably, the screw feeder includes a driving member, the output end of the driving member is fixedly connected to a screw shaft, the screw shaft is fixedly connected to a spiral blade, a casing is provided on the outer side of the spiral blade, one end of the casing is connected to the screening drum, and a feed hopper is fixedly connected to the top of the casing.

[0009] Preferably, one end of the screw shaft away from the driving member passes through the casing and extends to the interior of the screening drum, and one end of the screw shaft located inside the screening drum is rotatably connected to the inner end surface of the screening drum.

[0010] Preferably, the material recovery mechanism includes a pneumatic diaphragm pump body, a suction port is fixedly connected at the bottom of the pneumatic diaphragm pump body, the suction port is connected to the discharge pipe, and a discharge port is fixedly connected at the top of the pneumatic diaphragm pump body, the discharge port is connected to the return pipe.

[0011] Preferably, the air supply and dehumidification device includes an air distribution tank, which is fixedly mounted on the supporting frame, and one end of the air distribution tank is fixedly connected to an air source triplet, the other end of the air distribution tank is fixedly connected to a dehumidifier, and the other end of the dehumidifier is connected to the air inlet pipe, and the air distribution tank is fixedly connected to a one-way controller, a two-way controller and a three-way controller.

[0012] Preferably, the one-way controller is connected to the pneumatic diaphragm pump body, and the two-way controller is connected to the pneumatic butterfly valve.

[0013] Preferably, the spray gun mechanism includes a spray gun rack, two slide rails are fixedly mounted on the spray gun rack, and a cylinder is fixedly mounted on one end of the spray gun rack, an output end of the cylinder is fixedly connected to a hydraulic rod, an output end of the hydraulic rod is fixedly connected to a slide plate, the slide plate is slidably connected to the two slide rails, and a number of evenly distributed mobile spray guns are fixedly mounted on the slide plate, a positioning spray gun is arranged on one side of the mobile spray gun, two of the positioning spray guns are fixedly mounted on the spray gun rack, and a spray hood is arranged on the end of the spray gun rack away from the cylinder, and an exhaust pipe is fixedly connected to the top of the spray hood.

[0014] Preferably, a spray controller is fixedly mounted on the carrier frame, the spray controller is connected to the discharge pipe, and the air inlet port on the spray controller is connected to the three-way controller.

[0015] Preferably, the plurality of movable spray guns and the two positioning spray guns are all connected to the spray controller.

[0016] The present invention has at least the following beneficial effects: The spiral feeder of the present invention is responsible for feeding, the drum screening machine screens the materials and then sends them to the spraying mechanism, the spraying mechanism processes the materials and sends the processed materials to the spray gun mechanism for spraying, the material recovery mechanism can recover the barium sulfate dry powder accumulated at the bottom of the spray tank, so as to realize the recycling of materials and reduce costs, the air supply and dehumidification device provides dry gas for the spraying process, avoids the influence of the dry powder electrostatic spraying effect due to the gas humidity problem, and prevents the dry powder from being affected by moisture and affecting its adhesion, and the spray gun mechanism sprays the processed dry powder material evenly on the surface of the anode mold in an electrostatic spraying manner, thereby completing the anode mold dry powder electrostatic spraying operation, thereby improving the surface treatment quality of the anode mold.

[0017] 2. The present invention can suck the barium sulfate dry powder accumulated at the bottom of the spray tank into the pneumatic diaphragm pump body during the spraying process through the suction port below the pneumatic diaphragm pump body, and the discharge port above the pneumatic diaphragm pump body can discharge the sucked material from the discharge port through the conveying effect of the pneumatic diaphragm pump body and return it to the spray tank through the return pipe, thereby realizing the recycling of materials, thereby avoiding material waste and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 A schematic diagram of the overall structure provided by the present invention; Figure 2 Partial structural diagram provided by the present invention Figure 1 ; Figure 3 A schematic diagram of the spraying mechanism and material recovery mechanism provided by the present invention; Figure 4 A cross-sectional view of the spraying mechanism provided by the present invention; Figure 5 A cross-sectional view of a spiral feeder and a drum screening machine provided by the present invention; Figure 6 A schematic diagram of the structure of the air supply and dehumidification device provided by the present invention; Figure 7 A top view of the overall structure provided by the present invention; Figure 8 Partial structural diagram provided by the present invention Figure 2 .

[0019] In the figure, 1, carrier frame; 2, screw feeder; 201, driving member; 202, screw shaft; 203, screw blade; 204, housing; 205, feed hopper; 3, drum screening machine; 301, screening drum; 302, collecting hopper; 303, discharge hopper; 304, heating coil; 4, spraying mechanism; 401, spraying tank; 402, pneumatic butterfly valve; 403, orifice plate; 404, level detection mechanism; 405, discharge pipe; 406, return pipe; 407, air inlet pipe; 408, vent pipe; 409, ball valve; 410, discharge pipe; 5. Material recovery mechanism; 501. Pneumatic diaphragm pump body; 502. Inlet; 503. Exhaust; 6. Air supply and dehumidification device; 601. Air distribution tank; 602. Air source triplex; 603. Dehumidifier; 604. One-way controller; 605. Two-way controller; 606. Three-way controller; 7. Spray gun mechanism; 701. Spray gun stand; 702. Slide rail; 703. Cylinder; 704. Hydraulic rod; 705. Slide plate; 706. Mobile spray gun; 707. Positioning spray gun; 708. Spray hood; 709. Exhaust pipe; 8. Spray controller. DETAILED DESCRIPTION

[0020] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] like Figure 1 - Figure 8 As shown, the anode mold dry powder electrostatic spraying device provided in this embodiment includes a carrier 1, a screw feeder 2 is fixedly installed on the carrier 1, a drum screening machine 3 is arranged on one side of the screw feeder 2, a spraying mechanism 4 is arranged below the drum screening machine 3, a material recovery mechanism 5 is arranged on one side of the spraying mechanism 4, an air supply and dehumidification device 6 is arranged below the material recovery mechanism 5, and a spray gun mechanism 7 is arranged on one side of the air supply and dehumidification device 6; The spraying mechanism 4 includes a spraying tank 401, a pneumatic butterfly valve 402 is provided at the feed port of the spraying tank 401, and a perforated plate 403 is provided inside the spraying tank 401, and a level detection mechanism 404 is provided above the perforated plate 403, a discharge pipe 405 is fixedly connected to one side of the spraying tank 401, and a return pipe 406 is fixedly connected to the other side of the spraying tank 401, an air inlet pipe 407 is provided below the return pipe 406, and a vent pipe 407 is provided above the return pipe 406. 8. A ball valve 409 is fixedly installed on the ventilation pipe 408. The air inlet pipe 407 and the ventilation pipe 408 are both connected to the spray tank 401, and the lower end of the spray tank 401 is fixedly connected to a discharge pipe 410. The material is transported by the screw feeder 2, and the drum screening machine 3 screens the material. The feed port of the spray tank 401 controls the material entry through the pneumatic butterfly valve 402. The internal orifice plate 403 helps to evenly distribute the material. The level detection mechanism 404 can monitor the material in real time. The material liquid level ensures the stability of material supply during the spraying process. The discharge pipe 405 transports the processed material to the spray gun mechanism 7 for spraying. The return pipe 406, the air inlet pipe 407, the vent pipe 408 and the discharge pipe 410 cooperate with each other to realize the air circulation and material reflux in the spray tank 401, ensuring that the material is in a good state in the tank. The vent pipe 408 ensures the balance of the air pressure in the spray tank 401, and the ventilation volume is controlled by the opening of the ball valve 409. The material recovery mechanism 5 can recover the barium sulfate dry powder accumulated at the bottom of the spray tank 401 to achieve material recycling and reduce costs. The air supply and dehumidification device 6 provides dry gas for the spraying process to avoid the influence of gas humidity on the dry powder electrostatic spraying effect and prevent the dry powder from being affected by moisture and affecting its adhesion. The spray gun mechanism 7 sprays the processed dry powder material evenly on the surface of the anode mold in an electrostatic spraying manner, thereby completing the anode mold dry powder electrostatic spraying operation, thereby improving the surface treatment quality of the anode mold; Further, such as Figure 1 - Figure 8As shown, the drum screening machine 3 includes a screening drum 301, which is fixedly mounted on the carrier frame 1, one end of the screening drum 301 is fixedly connected to a collecting hopper 302, one side of the collecting hopper 302 is provided with a discharging hopper 303, one end of the discharging hopper 303 is connected to the screening drum 301, and the other end of the discharging hopper 303 is connected to the feeding port of the spray tank 401, and a plurality of uniformly distributed heating coils 304 are fixedly connected to the inner side of the screening drum 301, and the screw feeder 2 includes a driving member 201, the output end of the driving member 201 is fixedly connected to a screw shaft 202, and the screw feeder 2 includes a driving member 201, and the output end of the driving member 201 is fixedly connected to a screw shaft 202. A spiral blade 203 is fixedly connected to the rotating shaft 202, and a housing 204 is arranged outside the spiral blade 203. One end of the housing 204 is connected to the screening drum 301, and a feed hopper 205 is fixedly connected above the housing 204. The end of the spiral shaft 202 away from the driving member 201 passes through the housing 204 and extends to the inside of the screening drum 301, and the end of the spiral shaft 202 located inside the screening drum 301 is rotatably connected to the inner end surface of the screening drum 301. The driving member 201 drives the spiral shaft 202 to rotate, so that the spiral blade 203 enters the housing 204 from the feed hopper 205. The material is transported to the screening drum 301, and the screening drum 301 of the drum screening machine 3 can screen the delivered material, and the fine powder material enters the spray tank 401 through the discharge hopper 303, and the large particles are discharged into the collecting hopper 302, so as to ensure that the quality of the material entering the spraying link meets the standard, and the several heating coils 304 inside the screening drum 301 can heat the material in the screening drum 301, so that the moisture of the material can be fully dried during the transportation process, so that the material can be more evenly dried, and the adhesion effect of the dry powder on the anode mold is avoided to be affected by factors such as moisture, thereby ensuring the spraying quality of the final anode mold surface treatment; Furthermore, if Figure 1 - Figure 8 As shown, the material recovery mechanism 5 includes a pneumatic diaphragm pump body 501, a suction port 502 is fixedly connected at the bottom of the pneumatic diaphragm pump body 501, and the suction port 502 is connected to the discharge pipe 410, and a discharge port 503 is fixedly connected at the top of the pneumatic diaphragm pump body 501, and the discharge port 503 is connected to the return pipe 406. Through the suction port 502 at the bottom of the pneumatic diaphragm pump body 501, the barium sulfate dry powder accumulated at the bottom of the spray tank 401 can be sucked into the pneumatic diaphragm pump body 501, and the discharge port 503 at the top of the pneumatic diaphragm pump body 501 can discharge the sucked material from the discharge port 503 through the conveying effect of the pneumatic diaphragm pump body 501 and send it back to the spray tank 401 through the return pipe 406, thereby realizing the recycling of materials, thereby avoiding the waste of materials and reducing production costs; Furthermore, if Figure 1 - Figure 8As shown, the air supply and dehumidification device 6 includes an air distribution tank 601, which is fixedly installed on the carrier frame 1, and one end of the air distribution tank 601 is fixedly connected to an air source triplet 602, and the other end of the air distribution tank 601 is fixedly connected to a dehumidifier 603, and the other end of the dehumidifier 603 is connected to the air inlet pipe 407. The air distribution tank 601 is fixedly connected to a one-way controller 604, a two-way controller 605 and a three-way controller 606, the one-way controller 604 is connected to the pneumatic diaphragm pump body 501, and the two-way controller 605 is connected to the pneumatic butterfly valve 402, and the air distribution tank 601 is connected to the air source triplet 602. The air source is dehumidified by the dehumidifier 603, and then the dehumidified gas is transported to the spray tank 401 through the air inlet pipe 407, so as to ensure that the electrostatic spraying of the dry powder is not disturbed by moisture and ensure the good fluidity and adhesion of the dry powder. At the same time, the one-way controller 604 on the gas distribution tank 601 is connected to the pneumatic diaphragm pump body 501, which can control the operation of the pneumatic diaphragm pump body 501 to realize the recovery of the barium sulfate dry powder accumulated at the bottom of the spray tank, and the two-way controller 605 is connected to the pneumatic butterfly valve 402, which can regulate the entry of the material into the feed port of the spray 401, thereby ensuring that the electrostatic spraying operation of the anode mold dry powder is completed efficiently and stably; Further, such as Figure 1 - Figure 8 As shown, the spray gun mechanism 7 includes a spray gun frame 701, on which two slide rails 702 are fixedly installed, and a cylinder 703 is fixedly installed at one end of the spray gun frame 701, and an output end of the cylinder 703 is fixedly connected to a hydraulic rod 704, and an output end of the hydraulic rod 704 is fixedly connected to a slide plate 705, the slide plate 705 is slidably connected to the two slide rails 702, and a plurality of evenly distributed mobile spray guns 706 are fixedly installed on the slide plate 705, and a positioning spray gun 707 is arranged on one side of the mobile spray gun 706, and two positioning spray guns 707 are fixedly installed on the spray gun frame 701, and a spray hood 708 is arranged at one end of the spray gun frame 701 away from the cylinder 703, and the spray hood 708 An exhaust pipe 709 is fixedly connected to the top of the anode mold, and the cylinder 703 drives the hydraulic rod 704 to move, driving the slide plate 705 to move on the slide rail 702, so that several mobile spray guns 706 fixed on the slide plate 705 can do reciprocating motion to spray the plane of the inner plate body of the anode mold, and the two positioning spray guns 707 can spray the inner plate ears of the anode mold, and cooperate with the mobile spray guns 706 to ensure the accuracy and integrity of the spraying, and the spray hood 708 is used to collect excess dust generated during spraying, and discharge it to the outside through the exhaust pipe 709 connected thereto, so as to maintain the cleanliness and stability of the spraying environment, so that the anode mold dry powder electrostatic spraying operation can be completed efficiently, accurately and with high quality; Furthermore, Figure 1 - Figure 8As shown, a spray controller 8 is fixedly installed on the carrier 1, and the spray controller 8 is connected to the discharge pipe 405, and the air inlet port on the spray controller 8 is connected to the three-way controller 606, and a plurality of mobile spray guns 706 and two positioning spray guns 707 are connected to the spray controller 8. The spray controller 8 is connected to the discharge pipe 405, and can monitor and control the material flow and state output from the discharge pipe 405 of the spray tank 401 in real time, ensure that the dry powder material supply delivered to the spray gun mechanism 7 meets the spraying requirements, and ensure the continuity and uniformity of the spraying. The gas port is connected to the three-way controller 606, which can receive the gas distributed by the gas distribution tank 601 from the gas supply and dehumidification device 6, and provide a stable gas source condition for the subsequent electrostatic spraying operation of the spray gun, ensuring that the dry powder can form a good atomization effect when sprayed and effectively adhere to the surface of the anode mold with a charge. At the same time, the spray controller 8 can control the opening, closing, spraying pressure, spraying angle and other parameters of several mobile spray guns 706 and two positioning spray guns 707, so as to realize the coordinated scheduling of different spray guns, thereby ensuring that the entire anode mold dry powder electrostatic spraying process is carried out efficiently and stably.

[0022] like Figure 1 - Figure 8 As shown, the principle of an anode mold dry powder electrostatic spraying device provided in this embodiment is as follows: First, the material is conveyed to the drum screening machine 3 through the screw feeder 2 for screening. During the conveying process, a number of heating coils 304 heat the material in the screening drum 301 to fully dry the moisture of the material. At this time, the two-way controller 605 on the gas distribution tank 601 controls the pneumatic butterfly valve 402 to open, and the fine powder material enters the spray tank 401, while the large particles are discharged into the collecting hopper 302. The amount of material in the spray tank is known through the level detection mechanism 404. When the material reaches the set amount, the pneumatic butterfly valve 402 is closed. At this time, the gas dehumidified by the dehumidifier 603 on the gas distribution tank 601 is conveyed to the spray tank 401 through the air inlet pipe 407 to blow the material, so that The material floats in the spray tank 401. At this time, the three-way controller 606 on the gas tank 601 supplies air to the spray controller 8. The spray controller 8 transports the material in the spray tank 401 through the discharge pipe 405 to several mobile spray guns 706 and two positioning spray guns 707. At this time, the cylinder 703 drives the hydraulic rod 704 to drive the slide plate 705 to move on the slide rail 702, and then the several mobile spray guns 706 make reciprocating motion to spray the flat surface of the plate body inside the anode mold, while the two positioning spray guns 707 spray the plate ears inside the anode mold. The spray hood 708 collects excess dust generated during spraying and discharges it to the outside through the exhaust pipe 709 connected to it, thereby completing the entire anode mold spraying process.

[0023] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0024] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0025] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. An anode mold dry powder electrostatic spraying device, comprising a carrier frame (1), characterized in that: A screw feeder (2) is fixedly mounted on the carrier frame (1); a drum screening machine (3) is arranged on one side of the screw feeder (2); a spraying mechanism (4) is arranged below the drum screening machine (3); a material recovery mechanism (5) is arranged on one side of the spraying mechanism (4); an air supply and dehumidification device (6) is arranged below the material recovery mechanism (5); and a spray gun mechanism (7) is arranged on one side of the air supply and dehumidification device (6); The spray mechanism (4) comprises a spray tank (401), a pneumatic butterfly valve (402) is provided at the feed port of the spray tank (401), an orifice plate (403) is provided inside the spray tank (401), a level detection mechanism (404) is provided above the orifice plate (403), a discharge pipe (405) is fixedly connected to one side of the spray tank (401), and a return pipe (406) is fixedly connected to the other side of the spray tank (401), an air intake pipe (407) is provided below the return pipe (406), a vent pipe (408) is provided above the return pipe (406), a ball valve (409) is fixedly installed on the vent pipe (408), the air intake pipe (407) and the vent pipe (408) are both connected to the spray tank (401), and a discharge pipe (410) is fixedly connected to the lower end of the spray tank (401).

2. The anode mold dry powder electrostatic spraying device according to claim 1 is characterized in that: The drum screening machine (3) comprises a screening drum (301), wherein the screening drum (301) is fixedly mounted on the supporting frame (1), one end of the screening drum (301) is fixedly connected to a collecting hopper (302), a discharge hopper (303) is arranged on one side of the collecting hopper (302), one end of the discharge hopper (303) is connected to the screening drum (301), and the other end of the discharge hopper (303) is connected to a feed port of the spray tank (401), and a plurality of evenly distributed heating coils (304) are fixedly connected to the inner side of the screening drum (301).

3. The anode mold dry powder electrostatic spraying device according to claim 2 is characterized in that: The screw feeder (2) comprises a driving member (201), the output end of the driving member (201) being fixedly connected to a screw shaft (202), the screw shaft (202) being fixedly connected to a screw blade (203), a casing (204) being arranged outside the screw blade (203), one end of the casing (204) being connected to the screening drum (301), and a feed hopper (205) being fixedly connected above the casing (204).

4. The anode mold dry powder electrostatic spraying device according to claim 3 is characterized in that: One end of the screw shaft (202) away from the driving member (201) passes through the housing (204) and extends into the interior of the screening drum (301), and one end of the screw shaft (202) located inside the screening drum (301) is rotatably connected to the inner end surface of the screening drum (301).

5. The anode mold dry powder electrostatic spraying device according to claim 4, characterized in that: The material recovery mechanism (5) comprises a pneumatic diaphragm pump body (501), a suction port (502) is fixedly connected at the bottom of the pneumatic diaphragm pump body (501), the suction port (502) is connected to the discharge pipe (410), and a discharge port (503) is fixedly connected at the top of the pneumatic diaphragm pump body (501), the discharge port (503) is connected to the return pipe (406).

6. The anode mold dry powder electrostatic spraying device according to claim 5, characterized in that: The air supply and dehumidification device (6) comprises an air distribution tank (601), the air distribution tank (601) being fixedly mounted on the support frame (1), and one end of the air distribution tank (601) being fixedly connected to an air source triplex (602), the other end of the air distribution tank (601) being fixedly connected to a dehumidifier (603), the other end of the dehumidifier (603) being connected to the air inlet pipe (407), and the air distribution tank (601) being fixedly connected to a one-way controller (604), a two-way controller (605) and a three-way controller (606).

7. The anode mold dry powder electrostatic spraying device according to claim 6, characterized in that: The first-way controller (604) is connected to the pneumatic diaphragm pump body (501), and the second-way controller (605) is connected to the pneumatic butterfly valve (402).

8. The anode mold dry powder electrostatic spraying device according to claim 7, characterized in that: The spray gun mechanism (7) comprises a spray gun frame (701), two slide rails (702) are fixedly mounted on the spray gun frame (701), a cylinder (703) is fixedly mounted on one end of the spray gun frame (701), an output end of the cylinder (703) is fixedly connected to a hydraulic rod (704), an output end of the hydraulic rod (704) is fixedly connected to a slide plate (705), the slide plate (705) is slidably connected to the two slide rails (702), a plurality of evenly distributed mobile spray guns (706) are fixedly mounted on the slide plate (705), a positioning spray gun (707) is arranged on one side of the mobile spray gun (706), two positioning spray guns (707) are fixedly mounted on the spray gun frame (701), and a spray hood (708) is arranged on one end of the spray gun frame (701) away from the cylinder (703), an exhaust pipe (709) is fixedly connected to the top of the spray hood (708).

9. The anode mold dry powder electrostatic spraying device according to claim 8, characterized in that: A spray controller (8) is fixedly mounted on the carrier frame (1), the spray controller (8) is connected to the discharge pipe (405), and the air inlet port on the spray controller (8) is connected to the three-way controller (606).

10. The anode mold dry powder electrostatic spraying device according to claim 9, characterized in that: The plurality of movable spray guns (706) and the two positioning spray guns (707) are all connected to the spray controller (8).

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