A casting flow coating equipment

Abstract

The present application discloses a casting flow coating device, which relates to the technical field of the casting refractory coating process, and includes a coating cylinder, a flow coating trough, and a coating agitator for stirring the coating in the coating cylinder, the coating cylinder is connected to a discharge cylinder, a delivery pump is arranged on the discharge cylinder, the delivery pump is connected to a feed pipe, the feed pipe is connected to the flow coating trough, the flow coating trough is provided with a coating outlet, the coating outlet is connected to a return pipe, and the return pipe is connected to the coating cylinder. The casting flow coating device of the present application requires a small floor space, has a high coating utilization rate, and ensures the uniformity of the coating and the stability of the coating Baume degree in the entire flow coating process, thereby improving the finished product quality of the casting.

Description

Technical Field

[0001] The present application relates to the technical field of a casting refractory coating coating process, and in particular to a casting flow coating device. Background Art

[0002] At present, in the foundry industry, in order to improve the quality and performance of castings, a layer of refractory coating is usually applied to the surface of the castings. This practice can effectively prevent the oxidation of the castings at high temperatures and improve the surface quality of the castings.

[0003] The traditional casting refractory coating process mainly includes spraying, brushing and dipping. Although the spraying and brushing processes are highly flexible, they generally have problems such as uneven coating distribution and low efficiency. In the dipping process, the casting is completely immersed in the coating pool and the coating thickness is controlled by the immersion time. Although the coating is evenly coated on a large area of ​​the casting and the uniformity of the coating is ensured, the coating pool of the dipping process occupies too large an area, the utilization rate of the coating is low, and it is easy to cause waste of coating. In addition, it is difficult to control the uniformity of the coating and the stability of the coating Baume, which affects the quality of the finished casting. Summary of the invention

[0004] In view of the problems existing in the prior art, the present application provides a casting flow coating device.

[0005] The present application provides a casting flow coating device, which adopts the following technical solution:

[0006] A casting flow coating device comprises a coating cylinder, a flow coating trough, and a coating stirrer for stirring the coating in the coating cylinder, wherein the coating cylinder is connected to a discharge cylinder, a delivery pump is provided on the discharge cylinder, a delivery pump is connected to a feed pipe, the feed pipe is connected to the flow coating trough, a coating outlet is provided in the flow coating trough, the coating outlet is connected to a reflux pipe, and the reflux pipe is connected to the coating cylinder.

[0007] Optionally, a feed zone, a stirring zone and a discharge zone are provided in the paint tank, the reflux pipe is connected to the feed zone, the discharge zone is connected to the discharge tank, the feed zone is provided with a first connection port connected to the stirring zone, the discharge zone is provided with a second connection port connected to the agitator, the first connection port is provided at the bottom position of the paint tank, the second connection port is provided at the top position of the paint tank, and the paint agitator is used to stir the paint in the stirring zone.

[0008] Optionally, an annular air pipe is fixedly installed in the stirring zone, and the annular air pipe is arranged at the bottom of the stirring zone. The annular air pipe is connected to a plurality of air flow pipes, and each of the air flow pipes is distributed along the circumference of the stirring zone. The annular air pipe is connected to an air pump, and a plurality of air outlet holes are opened on the annular air pipe and the air flow pipe. The air outlet holes on the annular air pipe are opened obliquely upward toward the center of the stirring zone, and the air outlet holes on the air flow pipes are opened toward the center of the stirring zone.

[0009] Optionally, a film is provided at the air outlet, and a plurality of micro air holes are provided on the film to prevent the paint from entering the annular air pipe or the air flow duct.

[0010] Optionally, the flow coating trough includes a flow coating pool and a baffle fixedly arranged on the flow coating pool, the paint outlet is opened at the bottom of the flow coating pool, the bottom wall of the flow coating pool is inclined downward in a direction close to the paint outlet, and the baffle is detachably arranged on the flow coating pool.

[0011] Optionally, a filter screen is installed in the feed area of ​​the paint tank, and the filter screen is arranged at the outlet position of the reflux pipe to filter the paint flowing back to the paint tank.

[0012] Optionally, a guide rail is fixedly provided in the paint cylinder, a sliding frame is slidably provided on the guide rail, at least two filter screens are installed on the sliding frame, and each of the filter screens can be detachably provided on the sliding frame.

[0013] Optionally, a mounting ring is fixedly provided on the filter screen cover along the circumference of the filter screen cover, a plurality of brackets are fixedly provided on the sliding frame, and a placement opening for placing the filter screen cover is provided on the bracket.

[0014] Optionally, a connecting mesh plate is installed on the sliding frame and between two adjacent brackets, and side panels are fixedly provided on both sides of the connecting mesh plate.

[0015] Optionally, a positioning block is slidably provided on the sliding frame, and an elastic member is provided on the sliding frame for driving the positioning block to slide toward the guide rail. A spherical ball is provided on the end face of the positioning block close to the guide rail. A plurality of positioning grooves for inserting the spherical ball are provided on the guide rail, and each of the positioning grooves is distributed along the length direction of the guide rail. The positioning grooves correspond to the brackets one by one, and the positioning grooves are adapted to the spherical ball.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The present application adds the coating to the coating tank, stirs the coating to a suitable Baume degree using a coating stirrer, and the stirred coating enters the discharge tank. The casting is placed in the flow coating tank, and then the delivery pump is started. The coating is pumped into the flow coating tank through the delivery pump and the feeding pipe, and the casting is flow-coated. At the same time, the coating in the flow coating tank flows out through the coating outlet under the action of gravity, and flows back to the coating tank through the reflux pipe, continues to be stirred and then enters the cycle again, and the flow coating operation is carried out in this cycle. The entire flow coating process requires a small floor space, and the utilization rate of the coating is high. After the coating flows back to the coating tank, it continues to be stirred and then enters the cycle again, which ensures the uniformity of the coating and the stability of the coating Baume degree, thereby improving the quality of the finished casting.

[0018] 2. The present application provides a feed zone, a stirring zone and a discharge zone inside the paint cylinder. The paint flows back into the feed zone, enters the stirring zone through a first connection port located at the bottom of the paint cylinder for stirring, and then enters the discharge zone through a second connection port located at the top of the paint cylinder for circulation. After the paint flows back into the paint cylinder, it can be fully stirred, thereby ensuring the uniformity of the paint during stirring and the stability of the Baume degree, thereby improving the consistency and uniformity of the paint quality in the flow coating operation.

[0019] 3. The present application installs an annular air pipe and multiple air flow pipes in the stirring zone, and air outlet holes are set on the annular air pipe and the air flow pipes, and the opening directions of the air outlet holes on the annular air pipe and the air flow pipes are controlled; when in use, air is delivered to the annular air pipe and each air flow pipe through an air pump, and the gas flows out from the air outlet holes, thereby increasing the fluidity of the paint in the stirring zone, avoiding the precipitation of the paint, achieving effective stirring of the paint, and ensuring that the paint is evenly mixed.

[0020] 4. This application installs a filter screen in the feed area of ​​the paint tank, and the filter screen is installed at the outlet of the reflux pipe, which can effectively filter the paint returning to the paint tank, thereby preventing impurities from circulating again into the flow coating tank, ensuring the purity and flow coating quality of the paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of the structure of the paint tank used in the embodiment of the present application;

[0023] Figure 3 This is a cross-sectional view of the structure of the paint tank used to express the embodiment of the present application;

[0024] Figure 4 yes Figure 3 A magnified view of part A;

[0025] Figure 5It is a schematic diagram of the structure of the filter screen used in the embodiment of the present application;

[0026] Figure 6 yes Figure 5 Magnified view of section B.

[0027] Explanation of reference numerals: 1, bottom plate; 11, air pump; 12, air supply pipe; 2, frame; 21, step; 3, paint tank; 31, feeding area; 32, stirring area; 33, discharging area; 34, first connecting port; 35, second connecting port; 36, annular air pipe; 361, air flow duct; 362, air outlet; 363, film; 37, filter screen; 371, mounting ring; 38, guide rail; 381, positioning groove; 4, flow coating tank; 41, paint outlet; 42, reflux pipe; 43, flow coating pool; 44, baffle; 5, paint agitator; 51, machine body; 52, stirring rod; 53, motor; 6, discharge cylinder; 61, delivery pump; 62, feed pipe; 63, mounting plate; 64, feed pipe; 7, sliding frame; 71, push handle; 72, bracket; 721, placement port; 73, connecting mesh plate; 731, side plate; 74, positioning block; 741, spherical ball; 75, slide groove; 76, elastic part. DETAILED DESCRIPTION

[0028] The following will be combined with the attached Figure 1 -Attached Figure 6 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0029] The inventor of the present application has found that in the foundry industry, the traditional casting refractory coating dip coating process generally has the problems of large floor space, low coating utilization, coating uniformity and coating Baume stability that are difficult to control, which in turn affects the final casting product quality. To this end, the present application discloses a casting flow coating device, which mainly adopts the following scheme:

[0030] The present application embodiment discloses a casting flow coating device. Figure 1 , including a base plate 1, a frame 2, a paint cylinder 3 fixedly arranged on the base plate 1, and a flow coating trough 4 fixedly arranged on the frame 2, a paint stirrer 5 for stirring the paint in the paint cylinder 3 is arranged on the base plate 1, the paint cylinder 3 is connected with a discharge cylinder 6, a delivery pump 61 is installed on the discharge cylinder 6, the delivery pump 61 is connected with the flow coating trough 4 through a feeding pipe 62, the flow coating trough 4 is provided with a paint outlet 41, the paint outlet 41 is connected with a return pipe 42, the return pipe 42 is connected with the paint cylinder 3, a paint circulation system is formed, and the paint utilization rate is improved.

[0031] Reference Figure 1 The flow coating tank 4 includes a flow coating pool 43 fixed on the frame 2 and a baffle 44 fixed on the flow coating pool 43. The flow coating pool 43 is arranged above the paint cylinder 3, and a step 21 is arranged on the frame 2. The paint outlet 41 is opened at the bottom of the flow coating pool 43, and the bottom wall of the flow coating pool 43 is tilted downward in the direction close to the paint outlet 41, so that the paint can flow smoothly into the return pipe 42. Specifically, the tilt angle of the bottom of the flow coating pool 43 is controlled within the range of 15° to 30°, which is conducive to the smooth outflow of the paint and does not affect the smooth progress of the flow coating operation.

[0032] Reference Figure 1 The baffles 44 are provided with multiple pieces, and are all fixed at the edge of the flow coating pool 43, which are used to prevent the paint from splashing in the flow coating pool 43. The material is selected from corrosion-resistant stainless steel or anti-aging plastic to ensure that it will not be damaged by paint erosion during long-term use. The baffles 44 are installed on the flow coating pool 43 in a detachable manner and are fixed to the flow coating pool 43 by bolts. Specifically, the side wall of the flow coating pool 43 is provided with a plug-in slot for the baffles 44 to be inserted, so as to facilitate the positioning of the baffles 44.

[0033] Reference Figure 2 and Figure 3 The paint tank 3 includes a feed zone 31, a stirring zone 32 and a discharge zone 33. The reflux pipe 42 is connected to the feed zone 31, and the discharge zone 33 is connected to the discharge tank 6. The connecting end of the discharge zone 33 and the discharge tank 6 is close to the bottom of the paint tank 3. The feed zone 31 is provided with a first connecting port 34 connected to the stirring zone 32. The first connecting port 34 is arranged at the bottom of the paint tank 3. The discharge zone 33 is provided with a second connecting port 35 connected to the stirrer. The second connecting port 35 is arranged at the top of the paint tank 3.

[0034] Reference Figure 2 and Figure 3 The paint stirrer 5 is purchased from the market and assembled, and a spiral blade stirrer or a paddle blade stirrer can be selected. Specifically, the paint stirrer 5 includes a body 51, a stirring rod 52 rotatably arranged on the body 51, and a motor 53 for driving the stirring rod 52 to rotate, and the stirring rod 52 extends into the stirring area 32.

[0035] The paint flows back to the feed area 31 through the reflux pipe 42, enters the stirring area 32 through the first connection port 34 located at the bottom of the paint cylinder 3 for stirring, and then enters the discharge area 33 through the second connection port 35 located at the top of the paint cylinder 3 for circulation, so that the paint can be fully stirred after flowing back to the paint cylinder 3, thereby ensuring the uniformity of the paint during stirring and the stability of the Baume degree, thereby improving the consistency and uniformity of the paint quality in the flow coating operation.

[0036] Reference Figure 2 and Figure 3 An annular air pipe 36 is fixedly arranged in the stirring zone 32, and the annular air pipe 36 is arranged at the bottom position of the stirring zone 32, and the first connecting port 34 is located above the annular pipe. The annular air pipe 36 is connected to a plurality of air flow pipes 361, and each air flow pipe 361 is distributed at equal intervals along the circumference of the stirring zone 32. An air pump 11 is fixedly arranged on the bottom plate 1, and the air pump 11 is connected to the air supply pipe 12, and the air supply pipe 12 is connected to the annular air pipe 36.

[0037] Reference Figure 3 and Figure 4 A plurality of air outlet holes 362 are provided on the annular air pipe 36 and the air flow pipe 361. The air outlet holes 362 on the annular pipe are evenly spaced along the circumference of the annular pipe, and the air outlet holes 362 on the annular air pipe 36 are opened obliquely upward toward the center of the stirring zone 32. The air outlet holes 362 on the air flow pipe 361 are evenly spaced along the length direction of the air flow pipe 361, and the air outlet holes 362 on the air flow pipe 361 are opened toward the center of the stirring zone 32.

[0038] Reference Figure 4 A film 363 is provided at the air outlet 362, and a plurality of micro pores are provided on the film 363 to prevent the paint from entering the annular air pipe 36 or the air flow duct 361; the film 363 can be made of polytetrafluoroethylene (PTFE), nylon or polyurethane. The most suitable film 363 material is selected according to the type of paint to ensure the cleanliness and reliability of the system.

[0039] Reference Figure 2 and Figure 3 A mounting plate 63 is fixedly provided on the top of the discharge cylinder 6, and the delivery pump 61 is fixed on the mounting plate 63 by bolts. The inlet end of the delivery pump 61 is connected to a feed pipe 64, which extends into the discharge cylinder 6, and the end of the feed pipe 64 away from the delivery pump 61 is close to the bottom of the discharge cylinder 6.

[0040] Reference Figure 5 A filter screen 37 is installed in the feed area 31 of the paint tank 3, and the filter screen 37 is set at the outlet of the return pipe 42. The specific filter screen 37 is woven into a mesh structure by metal wires, and the mesh size can be customized according to the type of paint. Generally, the mesh spacing is more suitable between 0.5 mm and 2 mm, which can not only block larger foreign matter but also ensure the smooth passage of paint. The filter screen 37 can filter the paint that flows back to the paint tank 3, effectively remove impurities in the paint, and ensure the purity and flow coating quality of the paint.

[0041] Reference Figure 5In order to clean the impurities in the filter screen cover 37 without affecting the flow coating process, at least two filter screen covers 37 are provided. In the embodiment of the present application, two filter screen covers 37 are provided, and a sliding frame 7 is slidably provided in the feed area 31. Each filter screen cover 37 is mounted on the sliding frame 7, and each filter screen cover 37 can be disassembled and cleaned or replaced individually; further, in order to facilitate the sliding of the sliding frame 7, a guide rail 38 is fixedly provided on the side wall of the feed area 31 of the paint tank 3, and the guide rail 38 is arc-shaped. An arc-shaped slider is fixedly provided on the sliding frame 7, and the slider is slidably provided in the guide rail 38. A push handle 71 is fixedly provided on the sliding frame 7 for pushing the sliding frame 7 to slide.

[0042] Reference Figure 5 A mounting ring 371 is fixedly provided on the filter screen cover 37 along the circumference of the filter screen cover 37, and a plurality of brackets 72 are fixedly provided on the sliding frame 7. In the embodiment of the present application, the number of brackets 72 is equal to the number of filter screen covers 37, and a circular arc-shaped placement opening 721 is provided on the bracket 72. The filter screen cover 37 is placed at the placement opening 721 position of the bracket 72, and the mounting ring 371 is overlapped on the top wall of the bracket 72, so as to facilitate the installation and removal of the filter screen cover 37.

[0043] Reference Figure 5 A connecting mesh plate 73 is installed on the sliding frame 7 and between two adjacent brackets 72. Side plates 731 are fixedly arranged on both sides of the connecting mesh plate 73. The mesh size of the connecting mesh plate 73 is consistent with the mesh size of the filter screen 37. When the sliding frame 7 is sliding, the paint flowing back to the paint tank 3 is filtered through the connecting mesh plate 73 to prevent the paint from directly flowing back to the feeding area 31 of the paint tank 3 and affecting the purity of the paint.

[0044] Reference Figure 5 and Figure 6 A positioning block 74 is slidably arranged on the sliding frame 7, and a slide groove 75 is provided on the sliding frame 7 for the positioning block 74 to slide. An elastic member 76 is arranged in the slide groove 75 for driving the positioning block 74 to slide toward the guide rail 38. The elastic member 76 includes a compression spring, which is arranged in the slide groove 75. One end of the compression spring abuts against the side wall of the slide groove 75, and the other end of the compression spring abuts against the positioning block 74. A spherical ball 741 is arranged on the end surface of the positioning block 74 close to the guide rail 38. The guide rail 38 8 is provided with a plurality of positioning grooves 381 for inserting spherical balls 741, the positioning grooves 381 are adapted to the spherical balls 741, each positioning groove 381 is distributed along the length direction of the guide rail 38, and the positioning grooves 381 correspond to the brackets 72 one by one. When the filter screen cover 37 is connected to the return pipe 42, the spherical balls 741 on the positioning block 74 are just inserted into one of the positioning grooves 381 on the guide rail 38, ensuring that the filter screen cover 37 remains relatively stable during operation.

[0045] The implementation principle of a casting flow coating device in the embodiment of the present application is as follows: by adding the coating to the coating tank 3, using the coating stirrer 5 to stir the coating to a suitable Baume degree, the stirred coating enters the discharge tank 6, the casting is placed in the flow coating trough 4, and then the delivery pump 61 is started, and the coating is pumped into the flow coating trough 4 through the delivery pump 61 and the feeding pipe 62, and the worker performs flow coating on the casting by holding the feeding pipe 62. At the same time, the coating in the flow coating trough 4 flows out through the coating outlet 41 under the action of gravity, and flows back to the coating tank 3 through the return pipe 42, and continues to stir and then enters the cycle again, so as to perform the flow coating operation in this cycle. The entire flow coating process requires a small floor space, and the utilization rate of the coating is high. After the coating flows back to the coating tank 3, it continues to stir and then enters the cycle again, which ensures the uniformity of the coating and the stability of the coating Baume degree, thereby improving the quality of the finished casting.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A casting flow coating device, characterized in that: The invention comprises a paint tank (3), a coating flow trough (4), and a paint stirrer (5) for stirring the paint in the paint tank (3); the paint tank (3) is connected to a discharge tank (6); the discharge tank (6) is provided with a delivery pump (61); the delivery pump (61) is connected to a delivery pipe (62); the delivery pipe (62) is connected to the coating flow trough (4); the coating flow trough (4) is provided with a paint outlet (41); the paint outlet (41) is connected to a return pipe (42); the return pipe (42) is connected to the paint tank (3); The paint tank (3) is provided with a feeding area (31), a stirring area (32) and a discharging area (33); the reflux pipe (42) is connected to the feeding area (31); the discharging area (33) is connected to the discharging tank (6); the feeding area (31) is provided with a first connecting port (34) connected to the stirring area (32); the discharging area (33) is provided with a second connecting port (35) connected to the stirrer; the first connecting port (34) is provided at the bottom of the paint tank (3); the second connecting port (35) is provided at the top of the paint tank (3); the paint stirrer (5) is used to stir the paint in the stirring area (32); An annular air pipe (36) is fixedly arranged in the stirring zone (32), and the annular air pipe (36) is arranged at the bottom of the stirring zone (32). The annular air pipe (36) is connected to a plurality of air flow pipes (361), and each of the air flow pipes (361) is distributed along the circumference of the stirring zone (32). The annular air pipe (36) is connected to an air pump (11). A plurality of air outlet holes (362) are provided on the annular air pipe (36) and the air flow pipe (361). The air outlet holes (362) on the annular air pipe (36) are opened obliquely upward toward the center of the stirring zone (32), and the air outlet holes (362) on the air flow pipe (361) are opened toward the center of the stirring zone (32); A film (363) is provided at the air outlet (362), and a plurality of micro air holes are provided on the film (363) for preventing the paint from entering the annular air pipe (36) or the air flow pipe (361).

2. A casting flow coating device according to claim 1, characterized in that: The flow coating trough (4) comprises a flow coating pool (43) and a baffle (44) fixedly arranged on the flow coating pool (43); the coating outlet (41) is opened at the bottom of the flow coating pool (43); the bottom wall of the flow coating pool (43) is inclined downward in a direction close to the coating outlet (41); and the baffle (44) is detachably arranged on the flow coating pool (43).

3. A casting flow coating device according to claim 1, characterized in that: A filter screen (37) is installed in the feed area (31) of the paint tank (3). The filter screen (37) is arranged at the outlet of the return pipe (42) and is used to filter the paint flowing back to the paint tank (3).

4. A casting flow coating device according to claim 3, characterized in that: A guide rail (38) is fixedly arranged in the paint tank (3), a sliding frame (7) is slidably arranged on the guide rail (38), at least two filter screens (37) are installed on the sliding frame (7), and each of the filter screens (37) can be detachably arranged on the sliding frame (7).

5. A casting flow coating device according to claim 4, characterized in that: A mounting ring (371) is fixedly arranged on the filter screen cover (37) along the circumference of the filter screen cover (37), a plurality of brackets (72) are fixedly arranged on the sliding frame (7), and a placement opening (721) for placing the filter screen cover (37) is arranged on the bracket (72).

6. A casting flow coating device according to claim 5, characterized in that: A connecting mesh plate (73) is installed on the sliding frame (7) and between two adjacent brackets (72), and side plates (731) are fixedly arranged on both sides of the connecting mesh plate (73).

7. A casting flow coating device according to claim 5, characterized in that: A positioning block (74) is slidably arranged on the sliding frame (7), and an elastic member (76) is arranged on the sliding frame (7) for driving the positioning block (74) to slide in a direction close to the guide rail (38). A spherical ball (741) is arranged on the end surface of the positioning block (74) close to the guide rail (38). The guide rail (38) is provided with a plurality of positioning grooves (381) for inserting the spherical ball (741), and each of the positioning grooves (381) is distributed along the length direction of the guide rail (38). The positioning grooves (381) correspond to the brackets (72) one by one, and the positioning grooves (381) are adapted to the spherical ball (741).

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