A rapid detection device for foundry sand

Abstract

The application discloses casting technical field and relates to a kind of casting raw sand rapid detection device, including rotating cavity mechanism, filter cavity, cleaning blow-drying mechanism, DD motor, rotating cavity mechanism bottom coaxial fixed installation has DD motor, DD motor coaxial fixed installation is at the top of cleaning blow-drying mechanism, cleaning blow-drying mechanism top coaxial fixed has cleaning pipe, cleaning pipe is sequentially sealed sliding coaxially through rotating cavity mechanism, filter cavity, DD motor from below to top, rotating cavity mechanism top is provided with the sealing door plate of symmetrical fixed connection by hinge, filter cavity and sealing door plate constitute back sand mechanism, and the even distribution on filter cavity inner wall is simultaneously when the mould sand in filter cavity is under the action of centrifugal force, and when mould sand moves to top, again falls into filter cavity under the action of back mechanism, and the mud sand on the surface of mould sand can be cleaned more cleanly by such multiple dispersing and cleaning, so that detection result is more accurate.

Description

Technical Field

[0001] This invention relates to the field of casting technology, specifically to a rapid detection device for raw sand used in casting. Background Technology

[0002] Casting is an ancient metal heat treatment process that requires the use of various materials. Among them, sand casting is the most common. The quality of the finished product is closely related to the quality of the sand mold. In the process of making sand molds, the quality control of the molding sand, especially the clay content, is very important. However, existing methods for testing clay content are time-consuming and labor-intensive. For example, the patent application number CN111239348B, entitled "An Auxiliary Device for Testing Clay Content in Casting Molding Sand", addresses this problem by using a method of stirring, extracting mud and water, and then drying and testing.

[0003] Although this device is more time-saving and labor-saving compared to existing clay content testing methods, when cleaning the molding sand, the abrasive aggregates into a clump, making it impossible to clean the mud and sand off the surface of the molding sand. Although a conveyor belt can be used to spread the molding sand, this method takes up a lot of space. In addition, during the extraction of mud and water, the molding sand is easily extracted along with the mud and water, and the mud and water contained in the molding sand cannot be completely extracted. After drying the molding sand, clay will still remain inside, affecting the accuracy of the test results.

[0004] Based on this, the present invention designs a rapid detection device for raw sand used in casting to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid detection device for raw sand used in casting, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rapid detection device for raw sand used in casting, comprising a rotating cavity mechanism, a filter cavity, a cleaning and drying mechanism, and a DD motor. The DD motor is coaxially fixedly installed at the bottom of the rotating cavity mechanism, and the DD motor is coaxially fixedly installed at the top of the cleaning and drying mechanism. The inner side of the filter cavity is configured as an inverted frustum shape. A cleaning pipe is coaxially fixed at the top of the cleaning and drying mechanism. The cleaning pipe passes through the rotating cavity mechanism, the filter cavity, and the DD motor in a sealed sliding manner from bottom to top. The cleaning pipe is coaxially and sealedly slidably connected to a sliding hole opened on the air blowing pipe. Water spray holes for spraying water are distributed on the side wall of the cleaning pipe near the filter cavity. A sealing door plate is provided at the top of the rotating cavity mechanism and is symmetrically fixedly connected by a hinge. The filter cavity and the sealing door plate constitute a sand return mechanism. The sealing door plate is provided with an upper plate and a lower plate. The surface of the upper plate adjacent to the top of the filter cavity has air outlet holes evenly distributed along the circumference. An inverted... A conical semi-conical hole is formed by the tight fit of the semi-conical hole of the lower plate with the sealing door in the closed state, forming a conical hole coaxial with the cleaning pipe. The upper plate is fixedly connected to the lower plate through a connecting column. The upper plate and the lower plate form a sand return cavity in the middle. The air outlet is connected to the sand return cavity. The outer side of the lower plate and the inner side of the upper plate form a sand return groove. The sand return groove is connected to the sand return cavity. When the sealing door is closed, the surface of the sand return groove near the rotating cavity mechanism and the inner sidewall of the filter cavity form a closed and continuous arc-shaped surface. Air blowing pipes for ventilation are evenly distributed along the circumference of the inner sidewall and bottom of the filter cavity. When the sealing door is closed, the air blowing pipes are sealed to the air outlet on one side of the top of the filter cavity. A conveying pipe for ventilation is opened in the sidewall of the cleaning pipe. The cleaning pipe has an air supply groove connected to the air blowing pipe at the sliding hole position. The cleaning pipe has an air inlet connected to the air supply pipe at the position near the cleaning and drying mechanism.

[0007] As a further embodiment of the present invention, square grooves of the same height as the filter cavity are symmetrically opened on the inner side wall of the rotating cavity mechanism, and positioning blocks are symmetrically installed on the outer side wall of the filter cavity. The surface of the positioning block adjacent to the side wall of the filter cavity is in close contact with the outer side wall of the filter cavity, and the square grooves are in a sealed sliding connection with the positioning blocks.

[0008] As a further embodiment of the present invention, the connecting column is slidably connected to the lower plate, a support spring is fixedly installed near the center of the sand return cavity, and a thrust spring is installed in the middle of the sand return groove.

[0009] As a further embodiment of the present invention, the bottom of the filter chamber is provided with uniformly distributed small holes.

[0010] As a further embodiment of the present invention, a coaxial conical separation block with a diameter larger than that of the conical hole is fixedly installed on the top of the cleaning tube, and the top of the separation block is lower than the top of the filter chamber.

[0011] As a further embodiment of the present invention, the cleaning pipe is vertically and fixedly sealed at the top of the water-air inlet block through the conical hole. The water-air inlet block is fixedly installed inside the mud-water collection box, with the center of the water-air inlet block coinciding with the center of the mud-water collection box. The top of the water-air inlet block has a guide pipe, a cleaning agent pipe, and a compressed air inlet pipe that completely penetrate the water-air inlet block. The compressed air inlet pipe is sealed to the inlet hole via a rubber hose. The guide pipe and the cleaning agent pipe are sealed to the cleaning pipe. A non-penetrating groove is formed on the side of the water-air inlet block, passing through the guide pipe and the cleaning agent pipe and slidably sealed to a switching plate. The bottom of the groove is fixedly connected to the switching plate via a return spring. The switching plate has a selection hole for switching between water and air. The selection hole is coaxial with the cleaning agent pipe when the switching plate is in its original position. One end of the switching plate away from the water-air inlet block is fixed. A movable rod is installed, which is vertically slidably connected to a switching support block. The switching support block is vertically fixed inside the mud and water collection box. The end of the movable rod, which is different from the fixed connection to the switching plate, is tightly connected to a cam. The cam is mounted on a fixed plate via a convex floating fixing rod. The convex floating fixing rod passes through the fixed plate and can rotate independently. The fixed plate is vertically fixed inside the mud and water collection box. A float is fixedly installed at the end of the convex floating fixing rod, which is different from the fixed installation of the cam. A return water groove coaxial with the mud and water collection box is opened on one side of the top of the mud and water collection box. An isolation plate for support is installed inside the mud and water collection box cavity. The isolation plate is provided with a water passage hole for connecting the inner and outer cavities. A drain pipe is installed at the bottom of the rotating cavity mechanism, which is connected, sealed, and fixedly penetrates the bottom of the rotating cavity mechanism. The drain pipe is slidably connected to the return water groove.

[0012] As a further embodiment of the present invention, an adjusting plate is slidably and sealed on one side of the isolation plate where a water passage hole is provided. The adjusting plate passes through the bottom of the mud and water collection box and is slidably and sealed to the mud and water collection box. An adjusting hole is provided on the adjusting plate.

[0013] As a further embodiment of the present invention, the inner diameter of the cleaning pipe at one end of the water spray hole is smaller than the diameter of the air guide pipe and the cleaning agent pipe.

[0014] As a further aspect of the present invention, the cam is configured to be elliptical in shape;

[0015] As a further embodiment of the present invention, a lifting mechanism is provided inside the rotating cavity mechanism. A symmetrical square groove is formed on the inner sidewall of the rotating cavity mechanism near the bottom. A lead screw groove connected to the square groove is formed on the sidewall of the rotating cavity mechanism from the top. An upper lifting fixing block and a lower lifting fixing block for supporting the lifting lead screw are fixedly installed in the lead screw groove. A driven bevel gear is fixedly installed at the end of the lifting lead screw adjacent to the lower lifting fixing block. The driven bevel gear meshes with a bevel gear. The driven bevel gear and the bevel gear are located within the square groove. The bevel gear is fixedly installed on the power lead screw. The power lead screw is fixedly installed on the rotating cavity mechanism via a guide fixing plate. Inside the cavity of the rotating cavity mechanism, a sliding plate is slidably mounted on the power screw through a screw hole. A guide rod is slidably mounted and fixedly mounted on the guide fixing plate through a hole on the sliding plate. A movable section is mounted on the side of the sliding plate away from the bottom of the rotating cavity mechanism. A transmission connecting rod is rotatably connected to the movable section. A filter support plate is rotatably connected to the other end of the transmission connecting rod relative to the other end of the movable section. The filter support plate is slidably sleeved on the cleaning pipe. A lifting slider is sleeved on the lifting screw. A connecting rod is movably connected to the end of the lifting slider away from the bottom of the rotating cavity mechanism. The connecting rod is fixedly mounted on the sealing door plate by a connecting fixing block.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention utilizes a centrifugal force to evenly distribute the molding sand along the inner wall of the filter chamber. As the molding sand undergoes centrifugal motion, it accumulates at the top of the inner wall of the filter chamber. Then, a sand return mechanism allows the sand to fall back into the filter chamber, resulting in a more even distribution during this fall. At this point, cleaning agent is sprayed through the nozzles on the cleaning pipe to clean the molding sand. This even distribution allows for better cleaning, resulting in cleaner removal of mud and sand from the surface of the molding sand, leading to more accurate test results. Furthermore, it accelerates the cleaning process and reduces testing time.

[0018] 2. The present invention has a separation block fixedly installed at the top of the cleaning pipe. When the molding sand falls back into the filter chamber from the sand return mechanism, the separation block will break up the aggregated molding sand again. Through this cyclical movement, the molding sand is broken up and cleaned multiple times, so that the molding sand is thoroughly cleaned.

[0019] 3. The present invention provides a lifting mechanism inside the rotating cavity mechanism, which makes it easier to remove the sand for weighing after the sand is cleaned, thus reducing the time required for sand removal.

[0020] 4. The present invention uses a cleaning and drying mechanism with a float, a moving rod, a cam, and a switching plate inside. The switching plate has a single selection hole. As the water level inside the cleaning and drying mechanism changes, the float moves the switching plate to switch the water and air inside the cleaning pipe. This switching action automatically dries the molding sand. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a main sectional view of the overall structure of the present invention;

[0023] Figure 3 This is a side sectional view of the overall structure of the present invention;

[0024] Figure 4 This is a front sectional view of the rotary cavity mechanism;

[0025] Figure 5 This is a schematic diagram of the rotating cavity mechanism;

[0026] Figure 6 This is a schematic diagram of the filter chamber;

[0027] Figure 7 Main sectional view of the cleaning and drying structure;

[0028] Figure 8 A schematic diagram showing the cleaning and drying structure after removing the mud and water collection box and cleaning pipe;

[0029] Figure 9 for Figure 7 Enlarged view of point A in the middle;

[0030] Figure 10 for Figure 4 Enlarged diagram of point B in the middle.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] Rotating cavity mechanism 100, sealing door panel 101, connecting rod 102, lifting slider 103, connecting fixing block 104, lifting screw 105, upper lifting fixing block 106, lower lifting fixing block 107, bevel gear 108, driven bevel gear 109, power screw 110, guide rod 111, filter support plate 112, transmission connecting rod 113, guide fixing plate 114, sliding plate 115, hinge 116, drain pipe 117, filter cavity 200, positioning block 201 202. Air blowing pipe, 300. Cleaning and drying mechanism, 301. Mud and water collection box, 302. Water return tank, 303. Cleaning pipe, 304. Water and air inlet block, 305. Return spring, 306. Switching plate, 307. Switching support block, 308. Cam, 309. Fixing plate, 310. Float ball, 311. Convex floating fixing rod, 312. Moving rod, 313. Air guide pipe, 314. Cleaning agent pipe, 315. Compressed air inlet pipe, 316. Rubber hose, 317. Adjusting plate, 400. DD motor. Detailed Implementation

[0033] Please see Figure 1--10. A DD motor 400 is coaxially fixedly mounted at the bottom of the rotating cavity mechanism 100. The DD motor 400 is coaxially fixedly mounted at the top of the cleaning and drying mechanism 300. The inner side of the filter cavity 200 is designed as an inverted frustum. A cleaning pipe 303 is coaxially fixed at the top of the cleaning and drying mechanism 300. The cleaning pipe 303 passes through the rotating cavity mechanism 100, the filter cavity 200, and the DD motor 400 in a sealed sliding manner from bottom to top. The cleaning pipe 303 has a sliding hole opened on the air blowing pipe 202. A coaxial, sealed sliding connection is used. Water spray holes for spraying water are distributed on the side wall of the cleaning pipe 303 near the filter chamber 200. A sealing door plate 101, symmetrically fixedly connected by a hinge 116, is provided at the top of the rotating chamber mechanism 100. The filter chamber 200 and the sealing door plate 101 constitute a sand return mechanism. The sealing door plate 101 has an upper plate and a lower plate. Air outlet holes evenly distributed along the circumference are opened on the surface of the upper plate adjacent to the top of the filter chamber 200. An inverted conical semi-conical hole is opened at the center of the lower plate. When the sealing door panel 101 is closed, the semi-conical hole of the lower plate fits tightly to form a conical hole coaxial with the cleaning pipe 303. The upper plate is fixedly connected to the lower plate via a connecting column. A sand return chamber is formed between the upper and lower plates. The air outlet is connected to the sand return chamber. A sand return groove is formed between the outer side of the lower plate and the inner side of the upper plate. The sand return groove is connected to the sand return chamber. When the sealing door panel 101 is closed, the surface of the sand return groove close to the rotating cavity mechanism 100 forms a closed and continuous arc-shaped surface with the inner wall of the filter chamber 200. Air blowing pipes 202 for ventilation are evenly distributed along the circumference of the inner side wall and bottom of the cavity 200. When the sealing door 101 is closed, the air blowing pipes 202 are sealed to the air outlet on one side of the top of the filter cavity 200. A conveying pipe for ventilation is opened in the inner side wall of the cleaning pipe 303. The cleaning pipe 303 is provided with an air supply groove connected to the air blowing pipe 202 at the sliding hole position. The cleaning pipe 303 is provided with an air inlet connected to the air supply pipe at the position close to the cleaning and drying mechanism 300.

[0034] During operation, this system features a rotating cavity mechanism 100, a filter chamber 200, a cleaning and drying mechanism 300, and a DD motor 400. Unlike traditional detection methods, the cleaning pipe 303 is fixedly mounted on the cleaning and drying mechanism 300 and is slidably sealed to the rotating cavity mechanism 100 and the filter chamber 200. The filter chamber 200 is connected to the rotating cavity mechanism 100 via a positioning block 201. The cleaning pipe 303 remains stationary. The molding sand, under centrifugal force within the filter chamber 200, distributes evenly along its inner wall. Simultaneously, during centrifugal motion, the molding sand adheres to the inner wall of the filter chamber 200. During the tumbling process, cleaning agent is sprayed through the water spray holes distributed on the cleaning pipe 303 to clean the molding sand. This cleans the mud and sand on the surface of the molding sand more thoroughly, making the test results more accurate. It also speeds up the cleaning process and reduces test time. A sand return mechanism is included here. The purpose of the sealing door plate 101 is that during the centrifugal motion of the molding sand, the sand will accumulate on the top of the inner wall of the filter chamber 200 as the motion time increases. A sand return chamber and a sand return trough are formed between the upper and lower plates of the sealing door plate 101. When the sealing door plate 101 is closed, the sand return trough... The top of the inner wall of the filter chamber 200 forms a closed, continuous arc-shaped surface. When the molding sand undergoes centrifugal motion, the molding sand gathered at the top of the inner wall of the filter chamber 200 will enter the sand return trough due to centrifugal force. The purpose of the air blowing pipe 202 is to deliver compressed air to the air blowing pipe 202 through the air supply pipe. An air outlet is provided on the surface of the upper plate adjacent to the filter chamber 200. The air outlet is connected to the sand return chamber. When the sealing door 101 is closed, the air supply pipe is sealed to the air outlet. Compressed air enters the sand return chamber through the air outlet. Under the action of the compressed air, the molding sand in the sand return trough is pushed away. The sand is introduced into the sand return chamber. Air blowing pipes 202 are evenly distributed along the circumference inside the side wall of the filter chamber 200. The molding sand in the sand return chamber is transported to the center of the lower plate by the action of the compressed air around it. A semi-conical hole in the shape of an inverted cone is opened at the center of the lower plate. When the sealing door 101 is closed, the semi-conical holes on both sides form a complete conical hole. The molding sand transported to the center by the compressed air falls back into the filter chamber 200 through the conical hole. Through this cyclical movement, the molding sand is cleaned multiple times, making the molding sand cleaner, improving the test results, and reducing the test time.

[0035] As a further embodiment of the present invention: square grooves of the same height as the filter cavity 200 are symmetrically opened on the inner side wall of the rotating cavity mechanism 100, and positioning blocks 201 are symmetrically installed on the outer side wall of the filter cavity 200. The surface of the positioning block 201 adjacent to the side wall of the filter cavity 200 is in close contact with the outer side wall of the filter cavity 200, and the square grooves are in a sealed sliding connection with the positioning blocks 201.

[0036] During operation, a positioning block 201 is set here. The purpose of setting the positioning block 201 is to make a sealed sliding connection between the positioning block 201 and the square groove opened on the inner wall of the rotating cavity mechanism 100. The positioning block 201 is fixedly installed on the filter cavity 200. After the DD motor 400 is started, the DD motor 400 drives the rotating cavity mechanism 100 to rotate and simultaneously drives the filter cavity 200 to rotate, so that the molding sand is evenly distributed on the inverted frustum-shaped inner wall of the filter cavity 200, which can evenly clean the molding sand.

[0037] As a further embodiment of the present invention: the connecting column is slidably connected to the lower plate, a support spring is fixedly installed near the center of the sand return cavity, and a thrust spring is installed in the middle of the sand return groove;

[0038] During operation, a support spring and a thrust spring are installed here. The purpose of these springs is that during the closing process of the sealing door panel 101, the lower panels are pressed against each other, and the support spring and the thrust spring are compressed under the force. When the sealing door panel 101 is in place, the support spring and the thrust spring are used to push the lower panel back to its original position. The semi-conical holes of the lower panel form a sealed conical hole.

[0039] As a further embodiment of the present invention: uniformly distributed small holes are formed at the bottom of the filter chamber 200;

[0040] During operation, small holes are provided here. The bottom of the filter chamber 200 has evenly distributed small holes. The purpose of providing these small holes is to allow the washed mud and water to be recycled back into the rotating chamber mechanism 100 through the evenly distributed small holes at the bottom of the filter chamber 200.

[0041] As a further embodiment of the present invention: a coaxial conical separation block with a diameter larger than that of the conical hole is fixedly installed on the top of the cleaning tube 303, and the top of the separation block is lower than the top of the filter chamber 200;

[0042] During operation, a separation block is installed here. The purpose of this separation block is to fix a separation block at the top of the cleaning pipe 303. The diameter of the separation block is larger than that of the conical hole and the height is lower than that of the top of the filter chamber 200. When the molding sand falls back into the filter chamber 200 from the conical hole, the separation block installed at the top of the cleaning pipe 303 will break up the aggregated molding sand again. Through this cyclical movement, the molding sand is broken up and cleaned multiple times, making the molding sand cleaner, improving the test results, and reducing the test time.

[0043] As a further embodiment of the present invention: the cleaning pipe 303 is vertically and fixedly sealed at the top of the water and air inlet block 304 through the conical hole. The water and air inlet block 304 is fixedly installed inside the mud and water collection box 301. The center of the water and air inlet block 304 coincides with the center of the mud and water collection box 301. The top of the water and air inlet block 304 is provided with a guide pipe 313, a cleaning agent pipe 314, and a compressed air inlet pipe 315 that completely penetrate the water and air inlet block 304. The compressed air inlet pipe 315 is sealed to the air inlet hole through a rubber tube 316. The cleaning agent pipe 313 and cleaning pipe 314 are sealed together with the cleaning pipe 303. A non-penetrating groove is provided on the side of the water / air inlet block 304, through which the air guide pipe 313 and cleaning agent pipe 314 are sealed and slidably connected to the switching plate 306. The bottom of the groove is fixedly connected to the switching plate 306 by a return spring 305. A selection hole for switching between water and air is provided on the switching plate 306. When the switching plate 306 is in its original position, the selection hole is coaxial with the cleaning agent pipe 314. The end of the switching plate 306 furthest from the water / air inlet block 304 is fixedly installed. A movable rod 312 is vertically slidably connected to a switching support block 307. The switching support block 307 is vertically fixedly installed inside the mud and water collection box 301. The movable rod 312, unlike the fixedly connected switching plate 306, is tightly connected to a cam 308. The cam 308 is mounted on a fixed plate 309 via a convex floating fixing rod 311. The convex floating fixing rod 311 passes through a hole in the fixed plate 309 and can rotate independently. The fixed plate 309 is vertically fixedly installed inside the mud and water collection box 301. The convex floating fixing rod 311 is distinct from the fixed plate 309. A float ball 310 is fixedly installed at one end of the fixed mounting cam 308. A return water groove 302 coaxial with the mud and water collection box 301 is opened on one side of the top of the mud and water collection box 301. A partition plate for support is installed inside the mud and water collection box 301. The partition plate divides the mud and water collection box 301 into inner and outer cavities. A water passage hole for connecting the inner and outer cavities is opened on the partition plate. A drain pipe 117 is installed at the bottom of the rotating cavity mechanism 100 and is connected to seal and fix the bottom of the rotating cavity mechanism 100. The drain pipe 117 is slidably connected to the return water groove 302.

[0044] During operation, a drain pipe 117 and a mud-water collection box 301 are installed here. The purpose of connecting the drain pipe 117 to the mud-water collection box 301 is to collect the wastewater after cleaning into the mud-water collection box 301. A float 310, a moving rod 312, and a cam 308 are also installed here. The float 310 is fixedly connected to the cam 308 through a convex float fixing rod 311. The convex float fixing rod 311 passes through a hole in the fixing plate 309 and can rotate independently. The cam 308 is tightly connected to one end of the moving rod 312. The purpose of the float 310 is to rotate under the action of buoyancy after the wastewater is collected into the mud-water collection box 301. This rotation, in turn, drives the cam 308 to rotate through the convex float fixing rod 311. The purpose of the cam 308 is to... The moving rod 312 is pushed down to move towards the water and air inlet block 304. A switching plate 306 is set here. The purpose of setting the switching plate 306 is that it has a single selection hole. As the moving rod 312 drives the switching plate 306 to move into the slide groove, the rotating hole coaxial with the cleaning agent pipe 314 will be coaxial with the air guide pipe 313 when it is in the original position. At this time, the cleaning liquid in the cleaning pipe 303 will be changed to compressed air as the hole position changes, and the cleaning sand will be dried. A return spring 305 is set here. The purpose of setting the return spring 305 is that after the process is completed and the wastewater in the mud and water collection box 301 is discharged, the switching plate 306 can automatically return to its original position. The molding sand can also be cleaned multiple times through such cyclic movement.

[0045] As a further embodiment of the present invention: an adjusting plate 317 is slidably installed on one side of the isolation plate where a water passage hole is provided. The adjusting plate 317 passes through the bottom of the mud and water collection box 301 and is slidably connected to the mud and water collection box 301. An adjusting hole is provided on the adjusting plate 317.

[0046] During operation, an adjustment plate 317 is installed here. The adjustment plate 317 has a water passage hole on one side and a sealing sliding connection with the isolation plate. The purpose of setting up the adjustment plate 317 here is to select the water passage hole at different positions according to the amount of molding sand put into the filter chamber 200, so as to control the cleaning time of the molding sand.

[0047] As a further embodiment of the present invention: the inner diameter of the cleaning pipe 303 at one end of the water spray hole is smaller than the diameter of the air guide pipe 313 and the cleaning agent pipe 314.

[0048] During operation, the purpose of setting the inner diameter of the water spray hole at one end of the cleaning pipe 303 to be smaller than that of the air guide pipe 313 and the cleaning agent pipe 314 is to increase the cleaning power of the cleaning agent and the drying power of the compressed air when cleaning or drying the mold sand.

[0049] As a further embodiment of the present invention: the cam 308 is configured to be elliptical in shape;

[0050] During operation, the purpose of setting the cam 308 to be elliptical is that when the float 310 rotates the cam 308 under the action of buoyancy, no matter which side the float 310 floats upward, the moving rod 312 can drive the switching plate 306 to move into the groove.

[0051] As a further aspect of the present invention: a lifting mechanism is provided inside the rotating cavity mechanism 100. A symmetrical square groove is formed on the inner sidewall of the rotating cavity mechanism 100 near the bottom. A lead screw groove, connected to the square groove, is formed on the sidewall of the rotating cavity mechanism 100 from the top. An upper lifting fixing block 106 and a lower lifting fixing block 107 for supporting the lifting lead screw 105 are fixedly installed in the lead screw groove. A bevel gear 109 is fixedly installed at the end of the lifting lead screw 105 adjacent to the lower lifting fixing block 107. The bevel gear 109 meshes with a bevel gear 108. The bevel gear 109 and bevel gear 108 are located within the square groove. The bevel gear 108 is fixedly installed on the power lead screw 110. The power lead screw 110 is fixedly installed on the rotating cavity mechanism 100 via a guide fixing plate 114. Inside cavity 0, a sliding plate 115 is slidably installed on the power screw 110 through the screw hole. A guide rod 111 is slidably installed and fixedly installed on the guide fixing plate 114 through a hole on the sliding plate 115. A movable section is installed on the side of the sliding plate 115 away from the bottom of the rotating cavity mechanism 100. The movable section is rotatably connected to a transmission connecting rod 113. The transmission connecting rod 113 is rotatably connected to a filter support plate 112 relative to the other end of the connected movable section. The filter support plate 112 is slidably sleeved on the cleaning pipe 303. A lifting slider 103 is sleeved on the lifting screw 105. A connecting rod 102 is movably connected to the end of the lifting slider 103 away from the bottom of the rotating cavity mechanism 100. The connecting rod 102 is fixedly installed on the sealing door plate 101 through a connecting fixing block 104.

[0052] During operation, a lifting mechanism is installed here. The purpose of this lifting mechanism is to allow the filter support plate 112 to be rotatably connected to the transmission connecting rod 113, which in turn is rotatably connected to the sliding plate 115. The sliding plate 115 is slidably connected to the guide rod 111. The sliding plate 115 is mounted on the power screw 110. The power screw 110 is fixedly connected to the bevel gear 108 at one end of the square groove. The bevel gear 108 meshes with the driven bevel gear 109. The driven bevel gear 109 is fixed to the lower lifting block 107 at one end of the square groove. A lifting slider 103 is installed on the lower lifting block 107. The lifting slider 103 is connected to the guide rod 111. The connecting rod 102 is rotatably connected by the connecting fixing block 104, which is fixedly installed on the sealing door panel 101. When the sealing door panel 101 is opened, the lifting slider 103 moves downward, driving the bevel gear 109 to rotate. The bevel gear 108 rotates with the bevel gear 109, driving the sliding plate 115 to move towards the center of the rotating cavity mechanism 100. The transmission connecting rod 113 is subjected to force, causing the filter support plate 112 to move upward. The filter cavity 200 installed on the filter support plate 112 moves upward accordingly, making it easier to remove and weigh the sand after the sand is cleaned, reducing the time required for sand removal.

Claims

1. A rapid testing device for raw casting sand, comprising a rotating chamber mechanism (100), a filter chamber (200), a cleaning and drying mechanism (300), and a DD motor (400), characterized in that: The DD motor (400) is coaxially fixedly mounted at the bottom of the rotating cavity mechanism (100). The DD motor (400) is coaxially fixedly mounted at the top of the cleaning and drying mechanism (300). The inner side of the filter cavity (200) is configured as an inverted frustum. A cleaning tube (303) is coaxially fixed at the top of the cleaning and drying mechanism (300). The cleaning tube (303) passes through the rotating cavity mechanism (100), the filter cavity (200), and the DD motor (400) in a sealed, sliding, and coaxial manner from top to bottom. The cleaning tube (303) is aligned with the sliding hole opened on the air blowing pipe (202). The shaft seal is slidably connected. Water spray holes for spraying water are distributed on the side wall of the cleaning pipe (303) near the filter chamber (200). A sealing door plate (101) is symmetrically fixedly connected to the top of the rotating chamber mechanism (100) via a hinge (116). The filter chamber (200) and the sealing door plate (101) constitute a sand return mechanism. The sealing door plate (101) has an upper plate and a lower plate. Air outlet holes are evenly distributed along the circumference on the surface of the upper plate adjacent to the top of the filter chamber (200). An inverted conical semi-conical hole is opened at the center of the lower plate. When the sealing door panel (101) is closed, the semi-conical hole of the lower plate fits tightly to form a conical hole coaxial with the cleaning pipe (303). The upper plate is fixedly connected to the lower plate through a connecting column. The upper plate and the lower plate form a sand return cavity in the middle. The air outlet is connected to the sand return cavity. The outer side of the lower plate and the inner side of the upper plate form a sand return groove. The sand return groove is connected to the sand return cavity. When the sealing door panel (101) is closed, the surface of the sand return groove close to the rotating cavity mechanism (100) and the inner wall of the filter cavity (200) form a closed and continuous arc-shaped surface. The filter chamber (200) has air blowing pipes (202) evenly distributed along the circumference of its side wall and bottom. When the sealing door (101) is closed, the air blowing pipes (202) are sealed to the air outlet on one side of the top of the filter chamber (200). The cleaning pipe (303) has a conveying pipe for air supply in its side wall. The cleaning pipe (303) has an air supply groove connected to the air blowing pipes (202) at the sliding hole position. The cleaning pipe (303) has an air inlet connected to the air supply pipe at a position close to the cleaning and drying mechanism (300).

2. The rapid detection device for raw casting sand according to claim 1, characterized in that: The inner wall of the rotating cavity mechanism (100) is symmetrically provided with square grooves of the same height as the filter cavity (200). Positioning blocks (201) are symmetrically installed on the outer wall of the filter cavity (200). The surface of the positioning block (201) adjacent to the side wall of the filter cavity (200) is in close contact with the outer wall of the filter cavity (200). The square grooves are in a sealed sliding connection with the positioning blocks (201).

3. The rapid detection device for raw casting sand according to claim 1, characterized in that: The connecting column is slidably connected to the lower plate, a support spring is fixedly installed near the center of the sand return cavity, and a thrust spring is installed in the middle of the sand return groove.

4. The rapid detection device for raw casting sand according to claim 1, characterized in that: The bottom of the filter chamber (200) has evenly distributed small holes.

5. The rapid detection device for raw casting sand according to claim 1, characterized in that: A coaxial conical separation block with a diameter larger than that of the conical hole is fixedly installed on the top of the cleaning tube (303), and the top of the separation block is lower than the top of the filter chamber (200).

6. The rapid detection device for raw casting sand according to claim 1, characterized in that: The cleaning pipe (303) is vertically and fixedly sealed at the top of the water and air inlet block (304) through the conical hole. The water and air inlet block (304) is fixedly installed inside the mud and water collection box (301). The center of the water and air inlet block (304) coincides with the center of the mud and water collection box (301). The top of the water and air inlet block (304) is provided with a guide pipe (313), a cleaning agent pipe (314), and a compressed air inlet pipe (315) that completely penetrate the water and air inlet block (304). The compressed air inlet pipe (315) is sealed to the air inlet hole through a rubber tube (316). The guide pipe (313) and the cleaning agent pipe... The channel (314) is sealed to the cleaning pipe (303). The side of the water and air inlet block (304) has a non-penetrating groove that passes through the air guide pipe (313), the cleaning agent pipe (314) and is sealed and slidably connected to the switching plate (306). The bottom of the groove is fixedly connected to the switching plate (306) by a return spring (305). The switching plate (306) has a selection hole for switching water and air. When the switching plate (306) is in its original position, the selection hole is coaxial with the cleaning agent pipe (314). A moving rod (3) is fixedly installed at the end of the switching plate (306) away from the water and air inlet block (304). 12) The movable rod (312) is vertically slidably connected to the switching support block (307). The switching support block (307) is vertically fixedly installed inside the mud and water collection box (301). The movable rod (312) is distinct from the fixedly connected switching plate (306) and is tightly connected to the cam (308). The cam (308) is mounted on the fixed plate (309) through a convex floating fixing rod (311). The convex floating fixing rod (311) passes through the fixed plate (309) and can rotate independently. The fixed plate (309) is vertically fixedly installed inside the mud and water collection box (301). The convex floating fixing rod (311) is distinct from the fixed plate (309) and is tightly connected to the cam (308). A float ball (310) is fixedly installed at one end of the mounting cam (308). A return water trough (302) coaxial with the mud and water collection box (301) is provided on one side of the top of the mud and water collection box (301). A partition plate for support is installed inside the mud and water collection box (301). The partition plate divides the mud and water collection box (301) into inner and outer cavities. A water passage hole for connecting the inner and outer cavities is provided on the partition plate. A drain pipe (117) that is connected, sealed and fixed through the bottom of the rotating cavity mechanism (100) is installed at the bottom. The drain pipe (117) is slidably connected to the return water trough (302).

7. A rapid detection device for raw casting sand according to claim 6, characterized in that: An adjusting plate (317) is slidably installed on one side of the isolation plate with a water passage hole. The adjusting plate (317) passes through the bottom of the mud and water collection box (301) and is slidably connected to the mud and water collection box (301). An adjusting hole is provided on the adjusting plate (317).

8. The rapid detection device for raw casting sand according to claim 6, characterized in that: The inner diameter of the cleaning pipe (303) located at one end of the water spray hole is smaller than the diameter of the air guide pipe (313) and the cleaning agent pipe (314).

9. A rapid detection device for raw casting sand according to claim 6, characterized in that: The cam (308) is elliptical in shape.

10. A rapid detection device for raw casting sand according to claim 1, characterized in that: The rotating cavity mechanism (100) is equipped with a lifting mechanism. A symmetrical square groove is formed on the inner sidewall of the rotating cavity mechanism (100) near the bottom. A lead screw groove, connected to the square groove, is formed on the sidewall of the rotating cavity mechanism (100) from the top. An upper lifting fixing block (106) and a lower lifting fixing block (107) for supporting the lifting lead screw (105) are fixedly installed in the lead screw groove. A driven bevel gear (109) is fixedly installed at the end of the lifting lead screw (105) adjacent to the lower lifting fixing block (107). The driven bevel gear (109) meshes with a bevel gear (108). The driven bevel gear (109) and the bevel gear (108) are located within the square groove. The bevel gear (108) is fixedly installed on a power lead screw (110). The power lead screw (110) is fixedly installed within the cavity of the rotating cavity mechanism (100) via a guide fixing plate (114). A sliding plate (115) is slidably mounted on the rod (110) through a lead screw hole. A guide rod (111) is slidably mounted and fixedly mounted on the guide fixing plate (114) through a hole on the sliding plate (115). A movable section is mounted on the side of the sliding plate (115) away from the bottom of the rotating cavity mechanism (100). The movable section is rotatably connected to a transmission connecting rod (113). The transmission connecting rod (113) is rotatably connected to a filter support plate (112) relative to the other end of the connected movable section. The filter support plate (112) is slidably sleeved on the cleaning pipe (303). A lifting slider (103) is sleeved on the lifting lead screw (105). A connecting rod (102) is movably connected to the end of the lifting slider (103) away from the bottom of the rotating cavity mechanism (100). The connecting rod (102) is fixedly mounted on the sealing door plate (101) through a connecting fixing block (104).

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