A magnetic separation device for foundry sand treatment

Abstract

This utility model discloses a magnetic separation device for casting sand treatment, relating to the field of casting sand treatment technology. It includes a housing and a mixing tank. A stirring shaft is rotatably connected inside the mixing tank, and several stirring rods are evenly distributed on the stirring shaft. A feed inlet is provided on one side of the mixing tank. A partition is fixedly connected to the top wall of the housing, and a processing mechanism for dispersing materials is provided on one side of the partition. Below the processing mechanism is a separation mechanism for magnetic separation of the materials. This utility model, through pre-treatment of the materials, effectively improves the adsorption efficiency of iron filings. The mixing tank and stirring shaft effectively break up agglomerated materials in the casting sand. The filter plates and brushes in the processing mechanism further disperse the materials, preventing large particles or agglomerates from affecting the magnetic separation efficiency. The use of overlapping first and second conveyor belts, combined with a powerful magnet, improves the adsorption rate and separation accuracy of iron filings.

Description

Technical Field

[0001] This utility model relates to the field of foundry sand treatment technology, specifically a magnetic separation device for foundry sand treatment. Background Technology

[0002] Casting is a method of pouring liquid metal into a casting cavity adapted to the shape of the part, and then cooling and solidifying it to obtain the part or blank. Currently, when processing waste sand into recycled sand, most methods use magnetic separation devices to remove iron filings from the waste sand. Existing magnetic separation devices mostly use a rotating conveyor belt and the magnetic properties of magnetic components to screen out the iron filings from the waste sand. For example, a foundry sand conveying device with a screening mechanism is described in patent CN216632489U. This device includes a magnetic separation device for processing foundry sand, but it lacks a pretreatment structure for the waste sand. This results in some materials being too large or clumped to be magnetically separated during the waste sand magnetic separation, leading to low efficiency in removing iron filings from the waste sand.

[0003] Based on this, a magnetic separation device for casting sand treatment is now provided, which can eliminate the drawbacks of existing technical solutions. Utility Model Content

[0004] The purpose of this invention is to provide a magnetic separation device for processing foundry sand, so as to solve the problem in the background art that some materials are too large or agglomerated and therefore cannot be magnetically separated.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A magnetic separation device for casting sand treatment includes a housing and a mixing tank fixedly installed inside the housing. The mixing tank is connected to the housing. A stirring shaft is rotatably connected inside the mixing tank. One end of the stirring shaft extends to the outer side of the top of the mixing tank and is fixedly connected to the output end of a drive motor. A plurality of stirring rods are evenly distributed on the stirring shaft. A feed inlet is provided on one side of the mixing tank.

[0007] A partition is fixedly connected to the top wall of the box. A processing mechanism for dispersing materials is provided on one side of the partition. A separation mechanism for magnetic separation of materials is provided below the processing mechanism.

[0008] The bottom of the mixing tank has a discharge port, and a baffle is provided at the discharge port. The baffle is rotatably connected to the inner wall of the tank via a rotating shaft. One end of the rotating shaft extends to the outside of the tank and is fixedly connected to a handle. The specifications and dimensions of the baffle are adapted to the specifications and dimensions of the discharge port.

[0009] Preferably, the processing mechanism includes a filter plate installed between the partition and the inner wall of the box. The filter plate is located below the discharge port. Both ends of the filter plate are connected to support plates. Slide grooves are provided on the inner walls of the two support plates. A screw is rotatably installed inside one slide groove, and a guide rod is fixedly installed inside the other slide groove. A sliding plate is installed between the screw and the guide rod. The sliding plate is threadedly connected to the screw and slidably connected to the guide rod. A brush is installed at the lower end of the sliding plate and is located above the filter plate. A guide plate for guiding material is provided below the filter plate. The guide plate is fixedly installed at the bottom of the two support plates, and the side of the guide plate near the partition is inclined downward.

[0010] Preferably, the separation mechanism includes a first conveyor belt and a second conveyor belt disposed below the guide plate. The first conveyor belt is located above the second conveyor belt. A powerful magnet is disposed inside the first conveyor belt. Limiting plates are disposed on both sides of the first conveyor belt. The powerful magnet is disposed in the overlapping area of ​​the upper and lower spaces of the first and second conveyor belts. The powerful magnet is fixedly installed on the limiting plates. A collection box is disposed below both the first and second conveyor belts. The collection box is slidably connected to the bottom wall of the box body.

[0011] Preferably, the width of the guide plate is smaller than the width of the first conveyor belt, the width of the first conveyor belt is smaller than the width of the second conveyor belt, the conveying directions of the first and second conveyor belts are opposite, and the second conveyor belt rotates toward the guide plate.

[0012] Preferably, a scraper is provided on the side of the box near the first conveyor belt, the scraper is in close contact with the surface of the first conveyor belt, and the scraper is positioned above the collection box.

[0013] Preferably, the mixing tank is provided with a positioning block inside to limit the rotation range of the baffle.

[0014] Preferably, a control panel is fixedly installed on one side of the enclosure.

[0015] Preferably, one side of the box is provided with an inspection door for observing the internal condition, and the box is provided with a door at the corresponding position of the collection box.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention effectively breaks up agglomerated materials in foundry sand by setting up a mixing tank and a mixing shaft. The filter plate and brush in the processing mechanism further disperse the materials to prevent large particles or agglomerates from affecting the magnetic separation efficiency. The use of overlapping first and second conveyor belts, combined with a powerful magnet, extends the magnetic adsorption path, improves the adsorption rate and separation accuracy of iron filings. By pre-treating the materials, the adsorption efficiency of iron filings can be effectively improved, waste generation can be reduced, and the recycling cost of foundry sand can be lowered. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of one side of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure on the other side of this utility model.

[0020] Figure 3 This is a top view of the present invention.

[0021] Figure 4 For the present utility model Figure 3 Cross-sectional view at point AA.

[0022] Figure 5 For the present utility model Figure 4 The front view.

[0023] Figure 6 For the present utility model Figure 3 Cross-sectional view at point BB.

[0024] Reference numerals in the attached drawings: 101. Box body; 102. Mixing tank; 103. Mixing shaft; 104. Feed inlet; 105. Baffle; 106. Positioning block; 107. Control panel; 108. Inspection door; 109. Box door; 110. Processing mechanism; 200. Filter plate; 201. Support plate; 202. Slide chute; 203. Screw; 204. Guide rod; 205. Slide plate; 206. Brush; 207. Guide plate; 208. Separation mechanism; 300. First conveyor belt; 301. Second conveyor belt; 302. Powerful magnet; 303. Limiting plate; 304. Collection box; 305. Scraper; 306. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] In this embodiment, as Figures 1-6As shown, a magnetic separation device for casting sand treatment includes a housing 101 and a mixing tank 102 fixedly installed inside the housing 101. The mixing tank 102 is connected to the housing 101. A stirring shaft 103 is rotatably connected inside the mixing tank 102. One end of the stirring shaft 103 extends to the outer side of the top of the mixing tank 102 and is fixedly connected to the output end of the drive motor. Several stirring rods are evenly distributed on the stirring shaft 103, which can effectively break up the agglomerated materials in the casting sand and ensure the uniformity and efficiency of the subsequent magnetic separation operation. A feed inlet 104 is provided on one side of the mixing tank 102 for feeding the casting sand to be treated.

[0028] A partition 105 is fixedly connected to the top wall of the box 101. A processing mechanism 200 for dispersing materials is provided on one side of the partition 105. A separation mechanism 300 for magnetic separation of materials is provided below the processing mechanism 200. By stirring and dispersing the agglomerated materials with the filter plate 201, the iron filings separation rate is improved.

[0029] The bottom of the mixing tank 102 is provided with a discharge port, and a baffle 106 is provided at the discharge port. The mixed material is discharged through the bottom discharge port. The baffle 106 is adjusted by a handle to control the material flow. The baffle 106 is rotatably connected to the inner wall of the tank body 101 by a rotating shaft. One end of the rotating shaft extends to the outside of the tank body 101 and is fixedly connected to the handle. The handle can be set to manual control mode and its position is fixed by bolts to avoid the mixing operation being unable to proceed smoothly. Alternatively, a motor drive can be selected according to the actual environmental requirements. The specifications and dimensions of the baffle 106 are adapted to the specifications and dimensions of the discharge port to increase the overall practicality.

[0030] Among them, such as Figure 4 - Figure 6As shown, the processing mechanism 200 includes a filter plate 201 installed between the partition 105 and the inner wall of the housing 101. The filter plate 201 is used to screen the stirred material. A vibrator can be provided on one side of the lower end of the filter plate 201 to promote the dispersion of the material and its fall through the filter holes. The filter plate 201 is located below the discharge port. Both ends of the filter plate 201 are connected to the support plate 202. The inner walls of the two support plates 202 are provided with grooves 203. A screw 204 is rotatably installed inside one groove 203. One end of the screw 204 extends to the outside of the housing 101 and is fixedly connected to the output end of the rotating motor. A guide rod 205 is fixedly installed inside the other groove 203. 05 serves as a guide. A sliding plate 206 is installed between the screw 204 and the guide rod 205. The sliding plate 206 is threadedly connected to the screw 204 and slidably connected to the guide rod 205. A brush 207 is installed at the lower end of the sliding plate 206. The brush 207 is positioned above the filter plate 201. The specifications and dimensions of the brush 207 are compatible with those of the filter plate 201. A guide plate 208 for guiding materials is provided below the filter plate 201. The guide plate 208 is fixedly installed at the bottom of the two support plates 202. The side of the guide plate 208 closest to the partition 105 is inclined downward to guide the material to the separation mechanism 300. Its inclined design ensures that the material falls evenly onto the conveyor belt and avoids accumulation.

[0031] Among them, such as Figure 4 - Figure 6 As shown, the separation mechanism 300 includes a first conveyor belt 301 and a second conveyor belt 302 disposed below the guide plate 208. Both the first conveyor belt 301 and the second conveyor belt 302 are driven by motors, which is existing technology. The first conveyor belt 301 is located above the second conveyor belt 302. A powerful magnet 303 is disposed inside the first conveyor belt 301. The powerful magnet 303 is used to attract iron filings. The material is selected according to the actual environmental requirements, such as permanent magnets, electromagnets, etc. Limiting plates 304 are provided on both sides of the first conveyor belt 301. The limiting plates 304 are used to fix the powerful magnet 303 and limit the material displacement. The powerful magnet 303 is disposed on the upper part of the first conveyor belt 301 and the second conveyor belt 302. In the lower space overlapping area, a strong magnet 303 is fixedly installed on the limiting plate 304. The strong magnet 303 is embedded inside the first conveyor belt 301. The length of the strong magnet 303 is less than the length of the first conveyor belt 301, so that there are magnetic and non-magnetic areas inside the first conveyor belt 301. This ensures that the iron filings fall off in the non-magnetic area. When the iron filings adsorbed on the surface of the first conveyor belt 301 rotate to the area where there is no magnetism of the strong magnet 303, the iron filings will automatically fall into the corresponding collection box 305 due to gravity for easy collection. Collection boxes 305 are provided below the first conveyor belt 301 and the second conveyor belt 302. The collection boxes 305 are slidably connected to the bottom wall of the box body 101 for easy subsequent processing.

[0032] Among them, such as Figure 4 - Figure 6 As shown, the width of the guide plate 208 is smaller than the width of the first conveyor belt 301, and the width of the first conveyor belt 301 is smaller than the width of the second conveyor belt 302. This limitation on size prevents materials from being unable to be smoothly conveyed to the surface of the conveyor belts. The conveying directions of the first conveyor belt 301 and the second conveyor belt 302 are opposite. The second conveyor belt 302 rotates toward the guide plate 208. The second conveyor belt 302 is used to receive non-magnetic materials, and the width difference design ensures complete separation of materials.

[0033] Among them, such as Figure 4 and Figure 5 As shown, a scraper 306 is provided on the side of the box body near the first conveyor belt 301. The scraper 306 is in close contact with the surface of the first conveyor belt 301. The scraper 306 is positioned above the collection box 305 to facilitate the scraping off of iron filings remaining on the surface of the first conveyor belt 301.

[0034] Among them, such as Figure 4 and Figure 5 As shown, the mixing tank 102 is equipped with a positioning block 107 inside, which is used to limit the rotation range of the baffle 106.

[0035] Example 2

[0036] The difference from Example 1 is that, as in Example 1, Figure 1 and Figure 3 As shown, a control panel 108 is fixedly installed on one side of the housing 101. The control panel 108 is electrically connected to the electrical components in the device, such as the drive motor, to facilitate the output of commands.

[0037] Among them, such as Figure 1 and Figure 3 As shown, a maintenance door 109 is provided on one side of the box 101 for observing the internal situation, which facilitates timely detection of faults. A box door 110 is provided at the corresponding position of the box 101 and the collection box 305, which facilitates subsequent processing of the materials inside the collection box 305.

[0038] In use, the material enters the mixing tank 102 through the feed inlet 104. The drive motor drives the mixing shaft 103 to rotate, thereby breaking up the lumpy material. The mixed material falls onto the surface of the filter plate 201 through the discharge port controlled by the baffle 106. The rotating motor drives the screw 204 to rotate, thereby moving the slide plate 206. The brush 207 cleans the filter plate 201 and further disperses the material. Qualified material falls onto the surface of the first conveyor belt 301 through the filter holes and the guide plate 208. Iron filings are attracted by the strong magnet 303. Non-magnetic materials are carried by the first conveyor belt 301 until they fall onto the surface of the second conveyor belt 302. When the first conveyor belt 301 rotates to the non-magnetic area, the iron filings will fall off due to gravity. The scraper 306 works together to remove the residual iron filings on the surface of the first conveyor belt 301. The iron filings and the magnetically separated material are collected into the corresponding collection boxes 305 for subsequent processing operations.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A magnetic separation device for casting sand treatment, comprising a housing (101) and a mixing tank (102) fixedly installed inside the housing (101), wherein the mixing tank (102) is connected to the housing (101), and a stirring shaft (103) is rotatably connected inside the mixing tank (102), one end of the stirring shaft (103) extends to the outer side of the top of the mixing tank (102) and is fixedly connected to the output end of a drive motor, wherein a plurality of stirring rods are evenly distributed on the stirring shaft (103), and a feed inlet (104) is provided on one side of the mixing tank (102); characterized in that A partition (105) is fixedly connected to the top wall of the box (101). A processing mechanism (200) for dispersing materials is provided on one side of the partition (105). A separation mechanism (300) for magnetic separation of materials is provided below the processing mechanism (200). The bottom of the mixing tank (102) is provided with a discharge port, and a baffle (106) is provided at the discharge port. The baffle (106) is rotatably connected to the inner wall of the tank body (101) through a rotating shaft. One end of the rotating shaft extends to the outside of the tank body (101) and is fixedly connected to a rotating handle. The specifications and dimensions of the baffle (106) are adapted to the specifications and dimensions of the discharge port.

2. A magnetic separation device for foundry sand treatment according to claim 1, characterized in that, The processing mechanism (200) includes a filter plate (201) installed between the partition plate (105) and the inner wall of the housing (101). The filter plate (201) is located below the discharge port. Both ends of the filter plate (201) are connected to the support plates (202). The inner walls of the two support plates (202) are provided with grooves (203). A screw (204) is rotatably installed inside one of the grooves (203), and a guide rod (205) is fixedly installed inside the other groove (203). The screw (204) and the guide rod (205) are connected. A slide plate (206) is installed between the two support plates (202). The slide plate (206) is threadedly connected to the screw (204). The slide plate (206) is slidably connected to the guide rod (205). A brush (207) is installed at the lower end of the slide plate (206). The brush (207) is set above the filter plate (201). A guide plate (208) for guiding material is provided below the filter plate (201). The guide plate (208) is fixedly installed at the bottom of the two support plates (202). The guide plate (208) is inclined downward on the side near the partition plate (105).

3. A magnetic separation device for foundry sand treatment according to claim 2, characterized in that, The separation mechanism (300) includes a first conveyor belt (301) and a second conveyor belt (302) disposed below the guide plate (208). The first conveyor belt (301) is located above the second conveyor belt (302). A powerful magnet (303) is disposed inside the first conveyor belt (301). Limiting plates (304) are provided on both sides of the first conveyor belt (301). The powerful magnet (303) is disposed in the overlapping area of ​​the upper and lower spaces of the first conveyor belt (301) and the second conveyor belt (302). The powerful magnet (303) is fixedly installed on the limiting plate (304). A collection box (305) is disposed below both the first conveyor belt (301) and the second conveyor belt (302). The collection box (305) is slidably connected to the bottom wall of the box body (101).

4. A magnetic separation device for foundry sand treatment according to claim 3, characterized in that The width of the guide plate (208) is smaller than the width of the first conveyor belt (301), the width of the first conveyor belt (301) is smaller than the width of the second conveyor belt (302), the conveying directions of the first conveyor belt (301) and the second conveyor belt (302) are opposite, and the second conveyor belt (302) rotates toward the guide plate (208).

5. A magnetic separation device for foundry sand treatment according to claim 4, characterized in that, A scraper (306) is provided on the side of the box close to the first conveyor belt (301). The scraper (306) is in close contact with the surface of the first conveyor belt (301). The scraper (306) is positioned above the collection box (305).

6. The magnetic separation device for foundry sand treatment of claim 1, wherein, The mixing tank (102) is provided with a positioning block (107) inside to limit the rotation range of the baffle (106).

7. The magnetic separation device for foundry sand treatment of claim 1, wherein, A control panel (108) is fixedly installed on one side of the housing (101).

8. The magnetic separation device for foundry sand treatment of claim 3, wherein, The box (101) has an inspection door (109) on one side for observing the internal condition, and the box (101) has a door (110) at the corresponding position of the collection box (305).

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