Foundry waste molding sand screening equipment

Abstract

This utility model relates to the technical field of screening equipment, and discloses a screening device for foundry waste molding sand, including a machine body. A pretreatment mechanism is arranged on the top left side of the machine body for adsorbing magnetic waste materials. A humidification mechanism is installed on the top of the machine body for humidifying the dry waste materials. The pretreatment mechanism includes a fixed plate, with a knob on the front left end of the fixed plate. A threaded rod is fixedly connected to the right side of the knob, and a fixed block is rotatably connected to the right end of the threaded rod. A threaded block is threadedly connected to the outer side of the threaded rod, and a magnetic rod mesh is fixedly connected to the front side of the threaded block. In this utility model, during the waste adsorption process, rotating the knob causes the threaded rod to rotate, which in turn pushes the threaded block to move along the rod body. The magnetic rod moves accordingly, approaching the coarse screen on the machine body, and uses magnetic force to adsorb magnetic waste materials, ensuring complete separation of the waste materials.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, and in particular to a screening equipment for foundry waste molding sand. Background Technology

[0002] Waste molding sand is a type of waste molding material generated during the casting production process. It mainly consists of raw sand, binder, additives, and metal oxides. In the casting process, molding sand is used to make molds. After being poured at high temperatures, its physical and chemical properties change, making it unusable and thus waste. It is characterized by large production volume and complex composition. If not handled properly, it can occupy land and pollute soil and water sources. However, through reasonable recycling technologies, such as screening, crushing, delamination, and calcination, it can regain its usability and achieve resource recycling, which is of great significance for environmental protection and resource conservation.

[0003] Waste molding sand screening equipment is a specialized machine used to screen and process waste molding sand generated during foundry production. Its core function is to separate sand lumps, metal scraps, binder residues, and other impurities mixed in the waste molding sand using screens or screening devices of different specifications. Simultaneously, it classifies the sand according to particle size, ensuring the recycled sand meets reuse standards. This type of equipment can be flexibly selected based on the complexity of the waste molding sand composition and the processing scale. It consists of a feeding system, a screening main unit, an impurity discharge mechanism, and a sand particle collection device. Its working principle utilizes mechanical vibration, rotational motion, or airflow separation to separate the waste molding sand according to particle size and physical properties during its movement. This removes impurities that affect the performance of the recycled sand and also classifies the sand... Waste molding sand is classified by particle size for subsequent regeneration or direct reuse. Screening equipment is a key pre-treatment device in the waste molding sand recycling process, playing a crucial role in improving the quality of recycled sand and resource recovery efficiency. During use, a large amount of quartz dust is generated during screening. If the dust removal system is poorly designed, the dust concentration in the workshop can easily exceed the standard, threatening workers' health. In existing technologies, atomizing nozzles are installed at the inlet, outlet, and above the belt conveyor of the screening equipment to form a water curtain to suppress dust. However, the debris contains metal fragments with high hardness and sharp shapes, which frequently impact and scrape the screen during screening, causing deformation, tearing, or breakage of the screen holes, thus reducing work efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a desulfurization disc dewatering machine, which aims to improve the problem in the prior art where, after the material accumulates at the bottom, if it is not stirred, fine particles and high-viscosity materials tend to remain in the bottom area for a long time, forming a dense filter cake, which leads to the rapid clogging of the filter cloth pores in this area.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a foundry waste molding sand screening device, comprising a machine body, a pretreatment mechanism provided on the top left side of the machine body, the pretreatment mechanism being used to adsorb magnetic waste in the waste, a spraying mechanism installed on the top of the machine body, the spraying mechanism being used to spray and wet the dry waste, the pretreatment mechanism comprising a fixing plate, a knob provided on the front left end of the fixing plate, a threaded rod fixedly connected to the right side of the knob, a fixing block rotatably connected to the right end of the threaded rod, a threaded block threadedly connected to the outer side of the threaded rod, a magnet rod fixedly connected to the front side of the threaded block, a coarse screen provided in the upper middle part of the left side of the inside of the machine body, and a fine screen provided in the middle part of the left side of the inside of the machine body.

[0006] As a further description of the above technical solution:

[0007] The spraying mechanism includes a disc disposed on the rear side of the machine body. A mounting rod is fixedly connected to the top of the disc, and a connecting rod is fixedly connected to the outer side of the mounting rod. A moving block is fixedly connected to the other end of the connecting rod, and a liquid storage box is fixedly connected to the bottom of the moving block. Multiple nozzles are equidistantly arranged at the bottom of the liquid storage box. A placement rod is provided at the center of the top of the machine body, and a drive assembly is installed at the bottom of the disc.

[0008] As a further description of the above technical solution:

[0009] The drive assembly includes a motor, which is located on the rear side of the machine body, and a rotating shaft is fixedly connected to the output end of the motor.

[0010] As a further description of the above technical solution:

[0011] A support plate is fixedly connected to the upper rear side of the machine body, and the top of the support plate is fixedly connected to the bottom of the motor.

[0012] As a further description of the above technical solution:

[0013] The top of the machine body is provided with a sliding groove, which is opened at the top of the mounting rod, and the inner wall of the sliding groove is slidably connected to the bottom of the moving block.

[0014] As a further description of the above technical solution:

[0015] A movable groove is provided on the left side of the body, and the movable groove is opened on the front side of the outer wall of the fixed plate.

[0016] As a further description of the above technical solution:

[0017] A limit rod is provided on the top left side of the machine body. The limit rod is fixedly connected to the rear side of the threaded block, and the rear side of the limit rod is slidably connected to the inner wall of the moving groove.

[0018] As a further description of the above technical solution:

[0019] Multiple elastic ropes are equidistantly arranged on the left side of the machine body, and the elastic ropes are fixedly connected to the outside of the coarse screen.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, during the waste adsorption process, rotating the knob causes the threaded rod to rotate, which in turn pushes the threaded block to move along the rod. The magnetic rod moves accordingly and approaches the coarse screen on the machine body, using magnetic force to adsorb magnetic waste, ensuring complete separation of waste.

[0022] 2. In this utility model, the starting motor transmits its kinetic energy through the rotating shaft and the disc, causing the moving block to move in a circular motion around the machine body. The liquid storage box rotates accordingly, and the liquid is sprayed evenly through the nozzle to moisten and dry the waste. The mounting rod supports the rotating structure to ensure full coverage spraying and efficient treatment of waste. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a front view of the foundry waste molding sand screening equipment proposed in this utility model;

[0025] Figure 2 This is a perspective view of the foundry waste molding sand screening equipment proposed in this utility model;

[0026] Figure 3 This is a side view of the foundry waste molding sand screening equipment proposed in this utility model;

[0027] Figure 4 This is a partial structural diagram of the foundry waste molding sand screening equipment proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the spraying mechanism of the foundry waste molding sand screening equipment proposed in this utility model.

[0029] In the diagram: 1. Machine body; 2. Pretreatment mechanism; 201. Fixing plate; 202. Knob; 203. Threaded rod; 204. Fixing block; 205. Threaded block; 206. Magnet rod; 207. Coarse screen; 208. Fine screen; 3. Spraying mechanism; 301. Disc; 302. Mounting rod; 303. Connecting rod; 304. Moving block; 305. Liquid storage box; 306. Nozzle; 307. Placement rod; 308. Drive assembly; 3081. Motor; 3082. Rotating shaft; 4. Bearing plate; 5. Sliding groove; 6. Moving groove; 7. Limiting rod; 8. Elastic rope. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 4 One embodiment of this utility model is a waste casting sand screening device, comprising a body 1. A pretreatment mechanism 2 is provided on the top left side. The pretreatment mechanism 2 is used to adsorb magnetic waste in the waste. A spraying mechanism 3 is installed on the top of the machine body 1. The spraying mechanism 3 is used to spray wet the dry waste. The pretreatment mechanism 2 includes a fixed plate 201. A knob 202 is provided on the front left end of the fixed plate 201. A threaded rod 203 is fixedly connected to the right side of the knob 202. Rotating the knob 202 will drive the threaded rod 203 to rotate. A fixed block 204 is rotatably connected to the right end of the threaded rod 203. A threaded block 205 is threadedly connected to the outside of the threaded rod 203, so that the threaded block 205 can move. A magnet rod 206 is fixedly connected to the front side of the threaded block 205, so that the magnet rod 206 can move. A coarse screen 207 is provided in the upper middle part of the left side of the inside of the machine body 1. A fine screen 208 is provided in the middle part of the left side of the inside of the machine body 1. A moving groove 6 is provided on the left side of the machine body 1. The moving groove 6 is opened on the front side of the outer wall of the fixed plate 201.

[0032] Specifically, in the waste adsorption process, by rotating the knob 202 on the left side of the front of the fixed plate 201, the threaded rod 203 on the right side is rotated. The threaded rod 203 then drives the threaded block 205, which is threaded to its outer side, to move along the rod body, so that the magnet rod 206 fixed on the front side of the threaded block 205 moves synchronously. During the movement, the magnet rod 206 approaches the coarse screen 207 on the machine body 1 and uses magnetic force to adsorb the magnetic waste on the coarse screen 207. The fine screen 208 in the middle left side of the machine body 1 performs secondary screening of the waste to ensure the thorough separation of waste. The coarse screen 207 is arranged in the upper middle left area of ​​the machine body 1, while the fine screen 208 is arranged in the middle left area. The left side of the machine body 1 is provided with a moving groove 6, which is opened on the front side of the outer wall of the fixed plate 201.

[0033] Reference Figure 2 , Figure 3 and Figure 5 The spraying mechanism 3 includes a disc 301, which is located on the rear side of the body 1. A mounting rod 302 is fixedly connected to the top of the disc 301. A connecting rod 303 is fixedly connected to the outer side of the mounting rod 302. A moving block 304 is fixedly connected to the other end of the connecting rod 303. A liquid storage box 305 is fixedly connected to the bottom of the moving block 304. Multiple nozzles 306 are equidistantly arranged at the bottom of the liquid storage box 305. A mounting rod 307 is provided at the top center of the disc 301. A drive assembly 308 is installed at the bottom of the disc 301. The drive assembly 308 includes a motor 3081. The motor 3081 is located at the rear of the body 1. A rotating shaft 3082 is fixedly connected to the output end of the motor 3081. The rotating shaft 3082 is driven to rotate by the kinetic energy of the motor 3081. A support plate 4 is fixedly connected to the upper rear of the body 1. The top of the support plate 4 is fixedly connected to the bottom of the motor 3081. The support plate 4 is used to support the motor 3081. A sliding groove 5 is provided at the top of the body 1. The sliding groove 5 is opened at the top of the mounting rod 307. The inner wall of the sliding groove 5 is slidably connected to the bottom of the moving block 304. The moving block 304 can move within the sliding groove 5.

[0034] Specifically, after the motor 3081 is started, the power it generates is transmitted to the rotating shaft 3082, which in turn drives the disc 301 to rotate. The disc 301, through the mounting rod 302 on its top and the connecting rod 303 on its outer side, drives the moving block 304 to perform a circular motion around the machine body 1. This motion causes the liquid storage box 305 at the bottom of the moving block 304 to rotate synchronously. The liquid in the liquid storage box 305 is evenly sprayed through multiple nozzles 306 arranged at equal intervals at the bottom, effectively moistening the dry waste. The top center of the machine body 1 The mounting rod 307 provides necessary support to ensure full coverage of the spraying range, thereby efficiently treating the waste with moisture. The support plate 4 is fixedly connected to the upper rear side of the machine body 1. The top of the support plate 4 is fixedly connected to the bottom of the motor 3081 to provide support for the motor 3081. The top of the machine body 1 is provided with a sliding groove 5, which is located at the top of the mounting rod 307. The inner wall of the sliding groove 5 is slidably connected to the bottom of the moving block 304, so that the moving block 304 can move freely in the sliding groove 5.

[0035] Reference Figure 4 A limit rod 7 is provided on the top left side of the machine body 1. The limit rod 7 is fixedly connected to the rear side of the threaded block 205. The rear side of the limit rod 7 is slidably connected to the inner wall of the moving groove 6 to play a limiting role. Multiple elastic ropes 8 are equidistantly arranged on the left side inside the machine body 1. The elastic ropes 8 are fixedly connected to the outer side of the coarse screen 207 to help the coarse screen 207 reset.

[0036] Specifically, a limiting rod 7 is configured on the top left side of the machine body 1. The limiting rod 7 is fixedly connected to the rear side of the threaded block 205. The rear side of the limiting rod 7 is slidably connected to the inner wall of the moving groove 6 to perform the limiting function. Multiple elastic ropes 8 are equidistantly arranged on the left side inside the machine body 1. These elastic ropes 8 are fixedly connected to the outer side of the coarse screen 207 to facilitate the reset operation of the coarse screen 207.

[0037] Working principle: In the waste adsorption process, the knob 202 on the left side of the front of the fixed plate 201 is rotated, which drives the threaded rod 203 on the right side to rotate. The threaded rod 203 drives the threaded block 205 connected to the outer thread to move along the rod body, so that the magnetic rod 206 fixed in front of the threaded block 205 moves synchronously. During the movement, the magnetic rod 206 comes close to the coarse screen 207 on the machine body 1 and uses magnetic force to adsorb the magnetic waste on the coarse screen 207. At the same time, the fine screen 208 in the middle of the left side inside the machine body 1 performs secondary screening of the waste to ensure thorough separation of waste.

[0038] The motor 3081 is started, and its output kinetic energy drives the rotating shaft 3082 to rotate. The rotating shaft 3082 drives the disc 301 to rotate. The disc 301 drives the moving block 304 to move around the machine body 1 in a circular motion through the top mounting rod 302 and the outer connecting rod 303. This causes the liquid storage box 305 at the bottom of the moving block 304 to rotate synchronously. The liquid in the liquid storage box 305 is evenly sprayed through multiple nozzles 306 arranged at equal intervals at the bottom to moisten the dry waste. The mounting rod 307 at the top center of the machine body 1 provides support to ensure that the spraying range is fully covered and to achieve efficient moistening of the waste.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waste casting sand screening device, comprising a body (1), characterized in that: The machine body (1) has a pretreatment mechanism (2) on the top left side, which is used to adsorb magnetic waste in the waste. The machine body (1) has a spraying mechanism (3) on the top, which is used to spray the dry waste. The pretreatment mechanism (2) includes a fixed plate (201), a knob (202) is provided on the left front side of the fixed plate (201), a threaded rod (203) is fixedly connected to the right side of the knob (202), a fixed block (204) is rotatably connected to the right end of the threaded rod (203), a threaded block (205) is threadedly connected to the outside of the threaded rod (203), a magnet rod (206) is fixedly connected to the front side of the threaded block (205), a coarse screen (207) is provided in the upper middle part of the left side inside the machine body (1), and a fine screen (208) is provided in the middle part of the left side inside the machine body (1).

2. The foundry waste molding sand screening equipment according to claim 1, characterized in that: The spraying mechanism (3) includes a disc (301), which is located on the rear side of the body (1). A mounting rod (302) is fixedly connected to the top of the disc (301), and a connecting rod (303) is fixedly connected to the outer side of the mounting rod (302). A moving block (304) is fixedly connected to the other end of the connecting rod (303). A liquid storage box (305) is fixedly connected to the bottom of the moving block (304). Multiple nozzles (306) are equidistantly arranged at the bottom of the liquid storage box (305). A placement rod (307) is provided at the top center of the body (1), and a drive assembly (308) is installed at the bottom of the disc (301).

3. The foundry waste molding sand screening equipment according to claim 2, characterized in that: The drive assembly (308) includes a motor (3081), which is located on the rear side of the body (1), and the output end of the motor (3081) is fixedly connected to a rotating shaft (3082).

4. The foundry waste molding sand screening equipment according to claim 3, characterized in that: A support plate (4) is fixedly connected to the upper rear side of the body (1), and the top of the support plate (4) is fixedly connected to the bottom of the motor (3081).

5. The foundry waste molding sand screening equipment according to claim 2, characterized in that: The top of the body (1) is provided with a sliding groove (5), which is opened on the top of the mounting rod (307). The inner wall of the sliding groove (5) is slidably connected to the bottom of the moving block (304).

6. The foundry waste molding sand screening equipment according to claim 1, characterized in that: The left side of the body (1) is provided with a moving groove (6), which is opened on the front side of the outer wall of the fixed plate (201).

7. The foundry waste molding sand screening equipment according to claim 6, characterized in that: A limiting rod (7) is provided on the top left side of the body (1). The limiting rod (7) is fixedly connected to the rear side of the threaded block (205). The rear side of the limiting rod (7) is slidably connected to the inner wall of the moving groove (6).

8. The foundry waste molding sand screening equipment according to claim 1, characterized in that: Multiple elastic ropes (8) are equidistantly arranged on the left side of the inner side of the machine body (1), and the elastic ropes (8) are fixedly connected to the outside of the coarse screen (207).

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