Grinding wheel type centrifugal rotor resin sand regenerator

Abstract

The utility model discloses a grinding wheel type centrifugal rotor resin sand regenerator which comprises a machine main body, a sand guide cone, an upper grinding wheel and a lower grinding wheel, the sand guide cone is arranged in the center of the bottom end in the machine body, and the upper grinding wheel and the lower grinding wheel are arranged at the upper end and the lower end of the sand guide cone correspondingly. According to the grinding wheel type centrifugal rotor resin sand regenerator, sand grains do circular motion similar to a wave shape between the upper grinding wheel and the lower grinding wheel by changing the motion trail of sand flow, relative friction and collision between the sand grains and the rotor disc and between the sand grains can be effectively improved, and therefore the regeneration efficiency of used sand is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of resin sand casting, and in particular relates to a grinding wheel type centrifugal rotor resin sand regenerator. Background Art

[0002] Resin sand regenerators are generally used in supporting resin sand production lines, and can also be used as a single machine for crushing. The first-level regeneration of resin sand generally uses a multifunctional vibration crushing regenerator, which mainly crushes large pieces of sand and rubs them to remove the film. The second-level regeneration generally uses centrifugal regeneration, which is mainly mechanical rubbing. Through strong centrifugal action, the resin film on the surface of the sand is removed. The sand blocks are rubbed and rubbed against each other in the resin sand centrifugal regenerator, and then basically form sand particles and a small number of tiny sand blocks. The small sand blocks in the old sand after crushing are removed by screening. The old sand after screening basically exists in the form of sand particles and then enters the rotor regenerator. In the rotor regenerator, the sand passes through the rapidly rotating blades, so that the sand flow that has just entered the top of the regenerator is immediately thrown to the wear-resistant cylinder wall under the action of centrifugal force, so that the old sand rubs against each other in the regenerator, and the residual adhesive film on the surface of the sand particles is removed by impact. The old sand regenerated by the regenerator contains a large amount of dust and particles. The presence of these substances will seriously affect the performance of the resin. Therefore, it must be cleaned by air selection. The regenerated sand after air separation can be transported to the sand storage for storage, cooling and standby use.

[0003] In the existing centrifugal rotor resin sand regenerator, when the intermediate rotor disk drives the sand to rotate at high speed, the sand is thrown onto the retaining ring by centrifugal force, so that the sand hits and rubs against the rotor disk and the retaining ring, and between the sand. However, due to the high rotation speed of the rotor disk, the contact time between the rotor disk and the sand is short, so the sand cannot be fully rubbed, and the friction is not sufficient, and the regeneration effect is not ideal. Utility Model Content

[0004] The utility model aims to provide a grinding wheel type centrifugal rotor resin sand regeneration machine, which can effectively improve the relative friction and collision between the sand particles and the rotor disk, and between the sand particles, thereby improving the regeneration efficiency of the old sand by changing the movement trajectory of the sand flow so that the sand particles make a wave-like circular motion between the upper grinding wheel and the lower grinding wheel.

[0005] To achieve the above-mentioned purpose, the utility model provides a grinding wheel type centrifugal rotor resin sand regeneration machine, comprising a machine body, a sand guide cone, an upper grinding wheel and a lower grinding wheel; the sand guide cone is arranged at the center of the bottom end of the machine body, and the upper and lower ends of the sand guide cone are respectively provided with an upper grinding wheel and a lower grinding wheel.

[0006] Preferably, both the upper grinding wheel and the lower grinding wheel are provided with tooth structures, and the tooth structures of the upper grinding wheel and the lower grinding wheel are opposite to each other and arranged in a staggered manner.

[0007] Preferably, retaining rings are provided on both sides of the upper end of the inner part of the machine body, and trays are provided on both sides of the upper end of the outer part of the machine body.

[0008] Preferably, a through hole is provided at the bottom end of the machine body, and a rotor disk and a transmission main shaft are provided at the bottom of the lower grinding wheel in sequence from top to bottom, and the output end of the transmission main shaft passes through the through hole and is connected to the bottom of the rotor disk.

[0009] Beneficial effects of the utility model:

[0010] Compared with the existing regeneration machines, the grinding wheel type centrifugal rotor resin sand regeneration machine in the utility model adds an upper grinding wheel and a lower grinding wheel. At the same time, the upper grinding wheel and the lower grinding wheel are provided with a tooth structure, which can effectively change the movement trajectory of the sand particles, so that the sand particles make a wave-like circular motion between the upper grinding wheel and the lower grinding wheel, and increase the relative friction and collision between the sand particles and the rotor disk, and between the sand particles, thereby improving the regeneration efficiency of the old sand.

[0011] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a grinding wheel type centrifugal rotor resin sand regeneration machine of the utility model;

[0013] Figure 2 This is a schematic diagram of the application of the upper grinding wheel and the lower grinding wheel of an embodiment of a grinding wheel type centrifugal rotor resin sand regeneration machine of the utility model;

[0014] Figure 3 It is a schematic diagram of the application of an embodiment of a grinding wheel type centrifugal rotor resin sand regeneration machine of the utility model.

[0015] Reference numerals

[0016] 1. Machine body; 2. Sand guide cone; 3. Upper grinding wheel; 4. Lower grinding wheel; 5. Retaining ring; 6. Tray; 7. Rotor disc; 8. Transmission spindle; 9. Used sand. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] Example

[0020] like Figure 1 As shown, a grinding wheel type centrifugal rotor resin sand regenerator includes a machine body 1, a sand guide cone 2, an upper grinding wheel 3, and a lower grinding wheel 4. The sand guide cone 2 is arranged at the center of the bottom end of the machine body 1, and the upper and lower ends of the sand guide cone 2 are respectively provided with an upper grinding wheel 3 and a lower grinding wheel 4. When the old sand 9 enters the inside of the machine body 1 from the top of the machine body 1, the old sand 9 is dispersed to the surroundings under the action of the sand guide cone 2.

[0021] like Figure 2 As shown, both the upper grinding wheel 3 and the lower grinding wheel 4 are provided with tooth structures, and the tooth structures of the upper grinding wheel 3 and the lower grinding wheel 4 are opposite and staggered. After the old sand 9 is dispersed to the surroundings, under the joint action of the upper grinding wheel 3 and the lower grinding wheel 4, the sand grains make a wave-like circular motion. The contact between the sand grains and the upper grinding wheel 3 and the lower grinding wheel 4 can effectively change the movement trajectory of the sand grains, so that the sand grains can be fully rubbed and collided with each other, thereby improving the regeneration efficiency of the old sand 9.

[0022] Retaining rings 5 ​​are provided on both sides of the upper end of the main body 1, and trays 6 are provided on both sides of the upper end of the main body 1. The trays 6 are used to adjust and fix the retaining rings 5. A through hole is provided at the bottom of the main body 1, and a rotor disk 7 and a transmission main shaft 8 are provided at the bottom of the lower grinding wheel 4 from top to bottom. The output end of the transmission main shaft 8 passes through the through hole and is connected to the bottom of the rotor disk 7.

[0023] The rotor disk 7 rotates at high speed with the transmission main shaft 8. Under the action of centrifugal force, the sand passes through the inner wall of the rotor disk 7 and reaches the retaining ring 5. Under the action of the blades of the retaining ring 5, the sand is decelerated and flows through the gap outside the rotor disk 7 to the bottom of the machine body 1.

[0024] like Figure 3As shown, when the present embodiment is used, when the old sand 9 enters the interior of the machine body 1 from the top, the old sand 9 is dispersed around under the action of the sand guide cone 2. After the old sand 9 is dispersed around, under the joint action of the upper grinding wheel 3 and the lower grinding wheel 4, the sand particles make a wave-like circular motion. Then the sand particles fall onto the rotor disk 7, and the rotor disk 7 rotates at high speed with the transmission main shaft 8. When the sand particles pass through the inner wall of the rotor disk 7 under the action of centrifugal force, they reach the retaining ring 5. Under the action of the blades of the retaining ring 5, the sand particles are decelerated and flow from the gap outside the rotor disk 7 to the bottom of the machine body 1.

[0025] Therefore, the utility model adopts the above-mentioned grinding wheel type centrifugal rotor resin sand regeneration machine, and by changing the movement trajectory of the sand flow, the sand particles are made to perform a wave-like circular motion between the upper grinding wheel and the lower grinding wheel, which can effectively improve the relative friction and collision between the sand particles and the rotor disk, and between the sand particles, thereby improving the regeneration efficiency of the old sand.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A grinding wheel type centrifugal rotor resin sand regeneration machine, characterized in that: It comprises a machine body, a sand guide cone, an upper grinding wheel and a lower grinding wheel; the sand guide cone is arranged at the center of the bottom end of the machine body, and the upper and lower ends of the sand guide cone are respectively provided with an upper grinding wheel and a lower grinding wheel.

2. A grinding wheel type centrifugal rotor resin sand regenerator according to claim 1, characterized in that: The upper grinding wheel and the lower grinding wheel are both provided with tooth structures, and the tooth structures of the upper grinding wheel and the lower grinding wheel are opposite and staggered.

3. The grinding wheel type centrifugal rotor resin sand regenerator according to claim 1, characterized in that: Retaining rings are arranged on both sides of the upper end of the main body, and trays are arranged on both sides of the upper end of the main body.

4. The grinding wheel type centrifugal rotor resin sand regenerator according to claim 1, characterized in that: A through hole is provided at the bottom of the machine body, and a rotor disk and a transmission main shaft are provided in sequence at the bottom of the lower grinding wheel from top to bottom. The output end of the transmission main shaft passes through the through hole and is connected to the bottom of the rotor disk.

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