Efficient powerful crushing and grinding machine for old sand regeneration

Abstract

The utility model discloses an efficient strong crushing grinding machine for old sand regeneration, which comprises a box body (1), a coarse tooth crushing wheel set (2) and a fine tooth crushing wheel set (3), the coarse tooth crushing wheel set (2) comprises two coarse gears (7), the diameters of the coarse gears (7) are sequentially increased from front to back, the fine tooth crushing wheel set (3) comprises a plurality of fine gears (8), and the diameters of the fine gears (8) are sequentially increased from front to back. The densities of teeth of the fine gears (8) are sequentially increased from front to back; and a material guide roller (10) with teeth is arranged above the middle of the coarse tooth crushing wheel set (2) at a certain distance. The sand crusher is ingenious in structure, used sand can be crushed and ground step by step, the grinding effect is good, the adaptability to the size of sand blocks is good, the coarse tooth crushing wheel sets with different diameters are arranged so that the coarse tooth crushing wheel sets can contain and bite slightly large materials more easily, and the slightly large materials are prevented from being clamped between the two coarse gears; and due to the arrangement of different tooth densities of the fine tooth crushing wheel set, the quality of the reclaimed sand can be further improved.

Description

Technical Field

[0001] The utility model belongs to the field of crushers, in particular to a powerful crushing and grinding machine for efficient regeneration of old sand. Background Art

[0002] With the advancement of science and technology, the demand for castings in industrial production is increasing, and the quality requirements for castings are getting higher and higher. Sand is an important material for casting production. With the increase in the amount of castings and the requirements for castings, more and more old sand is produced. If these sands are directly discarded, it will not only cause environmental pollution, but also waste a large amount of recyclable resources. Therefore, various companies usually choose old sand regeneration equipment to recycle old sand. The existing patent CN 205270723 U discloses a three-axis old sand grinding and regeneration machine, including a frame and a regeneration chamber, a sand inlet is provided on the end face of the head of the regeneration chamber, and a sand outlet is provided at the tail. Three motors are provided outside the regeneration chamber, and a transmission shaft is provided on each motor shaft. The transmission shaft passes through the regeneration chamber, and a bearing seat supporting the transmission shaft is provided on the other side of the regeneration chamber. The transmission shaft is provided with rubbing blades, and a boiling orifice plate is provided below the transmission shaft. A bellows is provided below the boiling orifice plate, and a blower is provided outside the bellows. The above-mentioned prior art solution is a used sand crushing and regeneration machine: when such a device is working, if the old sand blocks are large, the equipment is easily stuck, which affects the production efficiency, and the crushing effect is not good enough, and high recovery requirements cannot be met. Utility Model Content

[0003] The utility model aims to provide a powerful crushing and grinding machine for high-efficiency old sand regeneration which can prevent large old sand blocks from getting stuck and can achieve better grinding effect.

[0004] The utility model is realized by the following technical solutions:

[0005] A powerful crushing and grinding machine for efficient regeneration of old sand comprises a housing and a coarse-tooth crushing wheel group and a fine-tooth crushing wheel group arranged in sequence from front to back in the housing. A feed inlet and a dust-containing air collection inlet are arranged above the housing, and the feed inlet is located above the coarse-tooth crushing wheel group. A discharge port is arranged on the housing and behind the fine-tooth crushing wheel group. The coarse-tooth crushing wheel group comprises two coarse gears meshing in sequence from front to back, and the diameter of the coarse gears increases in sequence from front to back. The fine-tooth crushing wheel group comprises a plurality of fine gears meshing in sequence from front to back, and the density of the teeth of the fine gears increases in sequence from front to back. A bottom support with an arc-shaped bracket adapted to the outer shape of the coarse gear and the fine gear is provided in the housing and below the coarse-tooth crushing wheel group and the fine-tooth crushing wheel group to improve the grinding efficiency. A toothed guide roller is provided above the middle of the coarse-tooth crushing wheel group at a distance.

[0006] Preferably, an air inlet chamber is provided at the bottom of the box body and below the coarse-tooth crushing wheel set and the fine-tooth crushing wheel set to allow the material in the box body to boil and move.

[0007] Preferably, the fine-tooth crushing wheel set includes three fine gears meshed in sequence from front to back.

[0008] Preferably, a top arc-shaped material blocking piece for blocking material is provided above each fine gear in the fine-tooth crushing wheel set.

[0009] Preferably, a dust-proof spray head is provided above the coarse-tooth crushing wheel group.

[0010] The beneficial effects of the utility model are:

[0011] The utility model is a powerful crushing and grinding machine for high-efficiency regeneration of old sand, which has an ingenious structure. By arranging the coarse-tooth crushing wheel group and the fine-tooth crushing wheel group in the box body from front to back, the old sand can be ground step by step, and the grinding effect is good, the adaptability to the size of the old sand block is good, and the grinding speed is fast; the coarse-tooth crushing wheel group is set to a structure in which the diameter increases from front to back, so that there is a larger accommodating space between two adjacent coarse gears due to the height difference, so that slightly larger pieces of material can be more easily accommodated and bitten into, and slightly larger pieces of material can be prevented from being stuck between the two coarse gears, and the jumping of slightly larger pieces of material between the wheels can also be effectively prevented; by arranging the fine-tooth crushing wheel group so that the density of the teeth increases from front to back The structure can allow the old sand to be ground by increasingly dense teeth, so that it can be regenerated finer and better, thereby improving the quality of the regenerated sand; in addition, because of the presence of the guide roller, when the old sand block entering from the feed port is large, it can be broken up in advance when it hits the guide roller, which not only protects the coarse gear from being damaged, but also speeds up the grinding progress. When a larger old sand block temporarily hovers and rolls above the middle of the two coarse gears of the coarse-tooth crushing wheel group, the presence of the guide roller can prevent the larger old sand block from rolling directly to the other side of the coarse gear on the right side before being ground to a sufficient degree and directly entering the fine-tooth crushing wheel group, thereby increasing the rear-end risk. It has good protection, strong practicality, and is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0013] Figure 1 This is a schematic diagram of the structure of a powerful crushing and grinding machine according to an embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the coarse gear and its driving device;

[0015] Figure 3 It is a schematic diagram of the structure of the fine gear and its driving device. DETAILED DESCRIPTION

[0016] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0017] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0018] like Figure 1-3 As shown, a powerful crushing and grinding machine for efficient regeneration of old sand comprises a housing 1 and a coarse-tooth crushing wheel group 2 and a fine-tooth crushing wheel group 3 arranged in sequence from front to back in the housing. A feed inlet 4 and a dust-containing air collection port 5 are arranged above the housing 1. The feed inlet 4 is located above the coarse-tooth crushing wheel group 2. A discharge port 6 is arranged on the housing 1 and behind the fine-tooth crushing wheel group 3. The coarse-tooth crushing wheel group 2 comprises two coarse gears 7 arranged in sequence from front to back in meshing engagement. The diameter of the coarse gear 7 is arranged from front to back. The fine-tooth crushing wheel group 3 includes a plurality of fine gears 8 meshing with each other from front to back, and the tooth density of the fine gears 8 increases from front to back. A bottom support 9 with ventilation holes and arc-shaped brackets adapted to the outer shapes of the coarse gears 7 and the fine gears 8 is provided in the box body 1 and below the coarse-tooth crushing wheel group 2 and the fine-tooth crushing wheel group 3 to improve the grinding efficiency. A toothed guide roller 10 is provided above the middle of the coarse-tooth crushing wheel group 2 at a certain distance.

[0019] An air inlet chamber 11 is provided at the bottom of the box body 1 and below the coarse-tooth crushing wheel set 2 and the fine-tooth crushing wheel set 3. A fan is connected to the air inlet chamber 11 to allow the old sand material to boil and gradually move forward by blowing air into the box body 1.

[0020] The fine-toothed crushing wheel assembly 3 includes three fine gears 8 meshed in sequence from front to back.

[0021] A top arc-shaped material blocking piece 12 for blocking material is also provided above each fine gear 8 in the fine-tooth crushing wheel set 3 .

[0022] A dust-proof spray head 13 is also provided above the coarse-tooth crushing wheel group 2 .

[0023] Working process:

[0024] The old sand falls from the feed port 4 onto the coarse-tooth crushing wheel set 2. The gears in the coarse-tooth crushing wheel set 2 and the fine-tooth crushing wheel set 3 rotate in the same direction, gradually crushing and grinding the old sand material into fine particles and sending them forward in sequence until they are sent to the discharge port 6. While the material is being transported forward, the wind blowing up through the air inlet chamber 11 boils the material, helping it to roll and be transported forward. The dust-containing gas is collected from the dust-containing air collection port 5.

[0025] Because the diameters of the two coarse gears 7 in the coarse-tooth crushing wheel set 2 increase from front to back, there is a larger accommodation space between the two coarse gears 7 due to the height difference, so that slightly larger pieces of material can be more easily accommodated and bitten into, preventing slightly larger pieces of material from being stuck between the two coarse gears, and also effectively preventing slightly larger pieces of material from jumping between the wheels;

[0026] Because the density of the teeth of the three fine gears 8 in the fine-tooth crushing wheel group 6 increases from front to back, the old sand can be crushed and ground by increasingly dense teeth in the process of moving forward, so that the old sand can be regenerated finer and better, which is beneficial to improving the quality of the final regenerated sand; in addition, because of the presence of the guide roller 10, when the old sand block entering from the feed port 4 is large, it can be broken up in advance when it hits the guide roller 10, which not only protects the coarse gear 7 from being damaged, but also speeds up the grinding progress. When a larger old sand block temporarily hovers and rolls above the middle of the two coarse gears 7 of the coarse-tooth crushing wheel group 2, the presence of the guide roller 10 can also prevent the larger old sand block from directly rolling to the other side of the coarse gear 7 on the right side before being finely ground to a sufficient degree and directly entering the fine-tooth crushing wheel group 3 to increase the rear end risk.

[0027] The utility model is a powerful crushing and grinding machine for high-efficiency regeneration of old sand, which has an ingenious structure. By arranging the coarse-tooth crushing wheel group and the fine-tooth crushing wheel group in the box body from front to back, the old sand can be ground step by step, and the grinding effect is good, the adaptability to the size of the old sand block is good, and the grinding speed is fast; the coarse-tooth crushing wheel group is set to a structure in which the diameter increases from front to back, so that there is a larger accommodating space between two adjacent coarse gears due to the height difference, so that slightly larger pieces of material can be more easily accommodated and bitten into, and slightly larger pieces of material can be prevented from being stuck between the two coarse gears, and the jumping of slightly larger pieces of material between the wheels can also be effectively prevented; by arranging the fine-tooth crushing wheel group so that the density of the teeth increases from front to back The structure can allow the old sand to be ground by increasingly dense teeth, so that it can be regenerated finer and better, thereby improving the quality of the regenerated sand; in addition, because of the presence of the guide roller, when the old sand block entering from the feed port is large, it can be broken up in advance when it hits the guide roller, which not only protects the coarse gear from being damaged, but also speeds up the grinding progress. When a larger old sand block temporarily hovers and rolls above the middle of the two coarse gears of the coarse-tooth crushing wheel group, the presence of the guide roller can prevent the larger old sand block from rolling directly to the other side of the coarse gear on the right side before being ground to a sufficient degree and directly entering the fine-tooth crushing wheel group, thereby increasing the rear-end risk. It has good protection, strong practicality, and is worthy of promotion.

[0028] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. Powerful crushing and grinding machine for efficient regeneration of old sand, characterized by: The invention comprises a housing (1) and a coarse-toothed crushing wheel group (2) and a fine-toothed crushing wheel group (3) arranged in sequence from front to back in the housing. A feed inlet (4) and a dust-containing air collection port (5) are arranged above the housing (1). The feed inlet (4) is located above the coarse-toothed crushing wheel group (2). A discharge port (6) is arranged on the housing (1) and behind the fine-toothed crushing wheel group (3). The coarse-toothed crushing wheel group (2) comprises two coarse gears (7) arranged in sequence from front to back in meshing engagement. The diameters of the coarse gears (7) are arranged from front to back in accordance with The fine-tooth crushing wheel group (3) comprises a plurality of fine gears (8) meshed in sequence from front to back, and the density of the teeth of the fine gears (8) increases in sequence from front to back; a bottom bracket (9) with a ventilation hole and an arc-shaped bracket adapted to the outer shape of the coarse gear (7) and the fine gear (8) is further provided in the box body (1) and below the coarse-tooth crushing wheel group (2) and the fine-tooth crushing wheel group (3); and a toothed material guide roller (10) is further provided above the middle of the coarse-tooth crushing wheel group (2) at a distance.

2. The powerful crushing and grinding machine for efficient regeneration of old sand according to claim 1 is characterized in that: An air inlet chamber (11) is also provided at the bottom of the box body (1) and below the coarse-tooth crushing wheel group (2) and the fine-tooth crushing wheel group (3).

3. The powerful crushing and grinding machine for efficient regeneration of old sand according to claim 1 is characterized in that: The fine-toothed crushing wheel assembly (3) comprises three fine gears (8) arranged in sequence from front to back and meshing with each other.

4. The powerful crushing and grinding machine for efficient regeneration of old sand according to claim 1 is characterized in that: A top arc-shaped material blocking piece (12) for blocking material is also provided above each fine gear (8) in the fine-tooth crushing wheel set (3).

5. The powerful crushing and grinding machine for efficient regeneration of old sand according to claim 1 is characterized in that: A dust-proof spray head (13) is also provided above the coarse-tooth crushing wheel group (2).

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