A casting sand vibrating screen

Abstract

The utility model belongs to foundry sand recycling technical field especially is a kind of foundry sand vibrating screen machine, including vibrating screen machine subassembly, the vibrating screen machine subassembly includes screening box, anti-vibration chassis and vibration motor, the screening box inner wall supports two layers of sieve plate, the vibrating screen machine subassembly one end is equipped with the discharge hole for discharging impurities, the vibrating screen machine subassembly top is equipped with closed assembly, the closed assembly includes sealing plate, pull plate and pull rod;The sliding type slide plate sealing plate design of closed assembly closed assembly can tightly close screening box screening box top, cooperate the sealing type unloading structure of feeding assembly feeding assembly, can effectively block the sand dust diffusion generated in vibrating screening process, after material enters after the docking groove of feed port, need to be pushed to the discharge opening feeding hole by partition plate to enter screening box, avoid the sand dust overflow caused by vibration when directly feeding, simultaneously realize uniform feeding, improve screening efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of foundry sand recycling technology, specifically relating to a foundry sand vibrating screen. Background Technology

[0002] The recycling and screening of foundry sand is a key link in the circular economy of foundry production. Existing vibrating screens mostly adopt open or simple cover plate designs. When the vibrating motor drives the screening box to operate, the sand is subjected to vertical vibration and mixes violently with the air, forming a large amount of dust. This dust diffuses outward through the gaps at the top of the box due to air shearing. Existing dust prevention equipment is difficult to prevent dust from being discharged directly through the old sand discharge point, which is directly connected to the top of the box. As a result, the existing dust prevention effect is poor. Utility Model Content

[0003] To address the above problems, the purpose of this utility model is to provide a foundry sand vibrating screen that solves the traditional problem that existing dust control equipment cannot prevent a large amount of dust from being discharged directly through the old sand feeding location when old sand is fed.

[0004] To achieve the above objectives, a foundry sand vibrating screen includes a vibrating screen assembly, which comprises a screening box, an anti-vibration base frame, and a vibrating motor. The inner wall of the screening box supports upper and lower screen plates. One end of the vibrating screen assembly has a discharge hole for discharging impurities. A sealing assembly is installed on the top of the vibrating screen assembly, which includes a sealing plate, a pull plate, and a pull rod. The sealing plate slides on the top of the screening box, and the top of the screening box is sealed by the sealing assembly. A feeding assembly is installed on the top of the vibrating screen assembly, which includes a feeding box, a feeding hole, a connecting sleeve, and four partitions. A dustproof pipe corresponding to the top of the screening box is installed at the bottom of the feeding hole. Arc-shaped slots for accommodating the dustproof pipe are provided on the two anti-vibration base frames. The four partitions are equidistantly distributed.

[0005] Preferably, the screening box is equipped with a frame for supporting the screen plate, and the top of the screening box is provided with a clearance hole that matches the sealing plate.

[0006] Preferably, the screening box is equipped with limiting frames that are flush with the sealing plate on both sides, and one end of the pull rod passes through the limiting frames.

[0007] Preferably, one end of the screening box is equipped with a reinforcing member that is connected to the bottom end of the feeding box. A support rod is installed on the top of the reinforcing member. A connecting sleeve is rotatably connected to the outer wall of the support rod. Several partitions are connected by the connecting sleeve. A connecting ring is installed on the top of the partition. Four positioning rods are installed on the outer wall of the connecting ring.

[0008] Preferably, a top plate is installed at the top of the support rod, and a docking groove is formed on the top plate.

[0009] Preferably, the docking groove corresponds to the two partitions.

[0010] This utility model has the following beneficial effects: 1. The sliding plate sealing plate design of the enclosed component can tightly seal the top of the screening box. Combined with the sealed feeding structure of the feeding component, it can effectively prevent the spread of sand and dust generated during the vibrating screening process.

[0011] 2. The feeding component uses four equally spaced partition plates that work in conjunction with the transmission belt connecting sleeve. By rotating the partition plates, the amount and rhythm of casting sand feeding can be controlled. After the material enters through the feed inlet docking groove, it needs to be pushed through the partition plates to the feed outlet before entering the screening box. This avoids sand and dust overflow caused by vibration when feeding directly, and at the same time achieves uniform feeding and improves screening efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the motion structure of the closed component in this utility model; Figure 3 This is a cross-sectional structural diagram of the feeding component in this utility model; Figure 4 This is a schematic diagram of the internal structure of the screening box in this utility model.

[0013] In the diagram: 1. Vibrating screen assembly; 11. Screening box; 12. Anti-vibration base frame; 13. Vibrating motor; 14. Screen plate; 2. Enclosure assembly; 21. Sealing plate; 22. Pull plate; 23. Pull rod; 24. Limiting frame; 3. Feeding assembly; 31. Feeding box; 32. Feeding hole; 321. Dustproof pipe; 33. Connecting sleeve; 34. Partition plate; 341. Connecting ring; 342. Positioning rod; 35. Support rod; 351. Reinforcing component; 36. Top plate; 361. Connecting groove. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way. Example

[0015] like Figure 1As shown in Figure 4, this utility model provides the following technical solution: it includes a vibrating screen assembly 1, which includes a screening box 11, an anti-vibration base frame 12, and a vibrating motor 13. The inner wall of the screening box 11 supports two layers of screen plates 14. One end of the vibrating screen assembly 1 is provided with a discharge hole for discharging impurities. A sealing assembly 2 is installed on the top of the vibrating screen assembly 1. The sealing assembly 2 includes a sealing plate 21, a pull plate 22, and a pull rod 23. The sealing plate 21 slides on the top of the screening box 11, and the top of the screening box 11 is sealed by the sealing assembly 2. A feeding assembly 3 is installed on the top of the vibrating screen assembly 1. The feeding assembly 3 includes a feeding box 31, a feeding hole 32, a connecting sleeve 33, and four partitions 34. The bottom end of the feeding hole 32 is provided with a dustproof pipe 321 corresponding to the top of the screening box 11. The two anti-vibration base frames 12 are provided with arc-shaped slots for making way for the dustproof pipe 321. The four partitions 34 are equidistantly distributed.

[0016] In this implementation scheme: the vibrating screen assembly 1 is used to screen foundry sand. Through the upper and lower screen plates 14 supported within the screening box 11, impurities such as metal scraps, riser residue, refractory material blocks, undissolved sand lumps, and clay clumps mixed in with the old sand are separated by the physical barrier of the screen plates 14. The impurities are discharged from the ends of the screen plates 14, and discharged through discharge holes corresponding to the screen plates 14 at the ends of the vibrating screen assembly 1. Clean sand particles are left to be discharged through the bottom of the equipment. Driven by the vibrating motor 13, the equipment screens... After the screening box 11 vibrates, the top of the vibrating screen assembly 1 can be sealed by the sealing component 2. The sealing plate 21 slides on the top of the screening box 11, allowing the two symmetrical sealing plates 21 to slide and close at both ends, sealing the top of the screening box 11. This prevents a large amount of sand and dust from being trapped inside the screening box 11 during vibration, reducing the amount of sand and dust scattered around the equipment and affecting the screening of foundry sand. Furthermore, when feeding old sand, it can be supported at the top of the screening box 11 by the feeding box 31. The feeding hole 32 on the feed box 31 can communicate with the top cavity of the screening box 11 through the dustproof pipe 321. The anti-vibration base frame 12 has a clearance arc groove, which allows the anti-vibration base frame 12 to fit against the outer wall of the dustproof pipe 321 and seal it. The inner cavity of the feed box 31 is divided into four cavities by the partition plate 34, and the top of the feed box 31 is sealed by the top plate 36. The docking groove 361 can put old sand into the feed box 31 and place it between the two partition plates 34. At this time, the position of the old sand does not correspond to the feeding hole 32, so that the old sand can rotate through the partition plate 34. The device pushes the old sand through the partition 34 into the dustproof pipe 321, and then it falls onto the partition 34. This allows the device to avoid the old sand being vibrated by the screening box 11 and the screen plate 14 when it is fed through the feeding component 3, thus reducing the spread of sand and dust and improving the working environment for the staff. The device can also separate the feeding component 3 from the top of the screening box 11, pull the sealing plate 21 outward, and separate the sealing plate 21 from the top cavity of the screening box 11, so that the device can be used normally and thus improve the convenience of using the device.

[0017] The screening box 11 is equipped with a frame for supporting the screen plate 14. The top of the screening box 11 is provided with a clearance hole that matches the sealing plate 21. The frame installed in the screening box 11 can support the screen plate 14, so that the screen plate 14 can be stably placed in the screening box 11 for screening old sand.

[0018] The screening box 11 is equipped with limiting frames 24 that are flush with the sealing plate 21 on both sides, and one end of the pull rod 23 passes through the limiting frame 24. The limiting frames 24 installed on both sides of the screening box 11 are used to limit the outer end of the sealing plate 21, so that the sealing plate 21 slides in the limiting frame 24, so that the sealing plate 21 can maintain a stable sliding and keep it horizontal.

[0019] One end of the screening box 11 is equipped with a reinforcement 351 that connects to the bottom of the feeding box 31. A support rod 35 is installed on the top of the reinforcement 351. A connecting sleeve 33 is rotatably connected to the outer wall of the support rod 35. Several partitions 34 are connected by the connecting sleeve 33. A connecting ring 341 is installed on the top of the partition 34. Four positioning rods 342 are installed on the outer wall of the connecting ring 341. The reinforcement 351 is used to support the support rod 35. By rotating the connecting sleeve 33 on the outer wall of the support rod 35, several partitions 34 can rotate independently on the inner wall of the feeding box 31, so that the connecting ring 341 is connected to the partition 34. The positioning rods 342 are supported on the outer wall of the connecting ring 341, so that the pushing of the positioning rods 342 can facilitate the pushing and adjustment of the partitions 34. The position of the positioning rods 342 corresponds to the cavity between every two partitions 34, so as to push the cavity for storing old sand to the opening position of the feeding hole 32.

[0020] A top plate 36 is installed at the top of the support rod 35, and a docking groove 361 is provided on the top plate 36; the top plate 36 is installed at the top of the support rod 35 and is connected and fixed to the support rod 35, and the position of the support rod 35 is fixed, so that the position of the docking groove 361 remains stable.

[0021] The docking groove 361 corresponds to the two partitions 34; the docking groove 361 corresponds to the cavity between the two partitions 34, so that the cavity between the partitions 34 can temporarily store old sand.

[0022] The working principle of this technical solution is as follows: Turn on the vibration motor 13 to put the screening box 11 into the vibration working state. Pour the foundry sand to be screened into the feeding component 3 through the docking groove 361. The sand is temporarily stored in the cavity between the two partitions 34. Rotate the connecting sleeve 33 and the partition 34. The sand enters the screening box 11 through the dustproof pipe 321. Under the action of vibration, the sand passes through the two layers of screen plates 14 for graded filtration. Impurities slide along the inclined surface of the screen plate 14 to the discharge hole and are discharged. Clean sand particles fall into the bottom of the box. After stopping the feeding, continue to vibrate for several minutes to ensure that the sand remaining on the screen plate 14 is completely filtered. Turn off the vibration motor 13, pull the pull plate 22 to open the sealing plate 21, clean the stubborn impurities that may remain on the surface of the screen plate 14, and collect the discharged impurities and the clean sand particles at the bottom of the vibrating screen component 1 to complete the screening operation.

[0023] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A foundry sand vibrating screen, characterized in that, The vibrating screen assembly (1) includes a screening box (11), an anti-vibration base frame (12), and a vibrating motor (13). The inner wall of the screening box (11) supports two layers of screen plates (14). One end of the vibrating screen assembly (1) has a discharge hole for discharging impurities. A sealing assembly (2) is installed on the top of the vibrating screen assembly (1). The sealing assembly (2) includes a sealing plate (21), a pull plate (22), and a pull rod (23). The sealing plate (21) slides on the top of the screening box (11). The top of the screening box (11) is sealed by the sealing component (2). The top of the vibrating screen assembly (1) is equipped with a feeding component (3). The feeding component (3) includes a feeding box (31), a feeding hole (32), a connecting sleeve (33), and four partitions (34). The bottom of the feeding hole (32) is equipped with a dustproof pipe (321) corresponding to the top of the screening box (11). The two anti-vibration base frames (12) are provided with arc-shaped slots for making way for the dustproof pipe (321). The four partitions (34) are evenly distributed.

2. The foundry sand vibrating screen according to claim 1, characterized in that: The screening box (11) is equipped with a frame for supporting the screen plate (14), and the top of the screening box (11) has a clearance hole that matches the sealing plate (21).

3. The foundry sand vibrating screen according to claim 1, characterized in that: The screening box (11) is equipped with a limiting frame (24) that is flush with the sealing plate (21) on both sides, and one end of the pull rod (23) passes through the limiting frame (24).

4. A foundry sand vibrating screen according to claim 1, characterized in that: One end of the screening box (11) is equipped with a reinforcement member (351) that is connected to the bottom end of the feeding box (31). A support rod (35) is installed on the top of the reinforcement member (351). A connecting sleeve (33) is rotatably connected to the outer wall of the support rod (35). Several partitions (34) are connected by the connecting sleeve (33). A connecting ring (341) is installed on the top of the partition (34). Four positioning rods (342) are installed on the outer wall of the connecting ring (341).

5. A foundry sand vibrating screen according to claim 4, characterized in that: The top of the support rod (35) is fitted with a top plate (36), and the top plate (36) has a docking groove (361).

6. A foundry sand vibrating screen according to claim 5, characterized in that: The docking groove (361) corresponds to the two partitions (34).

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