CN210058459U - Stone powder mill - Google Patents

Abstract

The utility model discloses a stone grinding machine, which comprises a casing, a rotating shaft and a hammer head; a plurality of arc tooth plates connected end to end are arranged in the casing along the outer edge of the hammer head's rotation track; each tooth plate has a side close to the hammer head. There are teeth, and there is a gap between the tooth plate and the hammer head; and the tooth plates are arranged in a step-like manner, and the gap between each tooth plate and the hammer head is from wide to narrow with the direction of the hammer head rotation, forming a number of independent crushing cavity; the discharge port is connected with the exhaust fan. The tooth plate installed in the machine and the rotating hammer form a small crushing cavity; the actual number of crushing cavities can be corresponding to the actual situation of the raw materials to be crushed and the needs of users. The rotation directions of the upper and lower main shafts of the machine are opposite, and the effect is achieved by the form of the plate hammer heads hitting each other, which can reduce the wear of the hammer heads and reduce the consumption of electric energy. Because the feeding port is set as a V-shaped return air port, the air flow driven by the hammer head rotates back to the inside of the machine all the time, and does not go out from the feeding port, which is environmentally friendly and safe.

Description

Stone Grinder

technical field

The utility model relates to a device for making stone into powder.

Background technique

Grinders are widely used in chemical, mining, steel, thermal power, coal and other industries, and their purpose is to crush ores, coal, etc. into powder for use. The structure of the existing pulverizer is relatively complicated. Generally, the bulk material is first crushed to the required feeding size by the crusher, and then the material is transported to the storage bin by the bucket elevator, and then fed by the electromagnetic vibrating feeder. It is evenly sent to the grinding chamber of the pulverizer, and the shovel blade scoops up and throws the material between the grinding roller and the grinding ring during the same rotation with the grinding roller to form a pad layer, and the material is between the grinding roller and the grinding ring. Grinding to achieve the purpose of milling. The pulverized powder is brought to the analysis machine for powder selection by the air flow of the fan, and the fine powder that meets the fineness requirement enters the cyclone collector through the pipeline with the air flow, and is separated and collected. The blower is sucked into the air return pipe at the upper end of the cyclone collector. The unsatisfactory powder is thrown by the blade to the outer wall and separated from the airflow, and the coarse powder particles fall into the grinding chamber for regrinding due to their own gravity.

The above-mentioned pulverizer is relatively large and expensive, and is suitable for large-scale industrial production. For some small businesses, the cost is difficult to accept.

Utility model content

In view of this, the utility model provides a stone pulverizer, which has a simple structure and good pulverizing effect.

In order to solve the above technical problems, the technical solution of the present utility model is to use a stone grinder, which includes a casing, and the casing is provided with a feeding port and a discharging port; it is characterized in that: the casing is provided with There is a horizontal rotating shaft, and a hammer head that rotates with the rotating shaft is installed on the rotating shaft; a number of arc tooth plates connected end to end are arranged along the outer edge of the hammer head rotation track in the shell; each tooth plate is provided with a side close to the hammer head. There is a gap between the teeth, the tooth plate and the hammer head; and the tooth plates are arranged in a step-like manner, and the gap between each tooth plate and the hammer head is from wide to narrow with the direction of the hammer head rotation, forming several independent crushing chambers ; The outlet is connected with the exhaust fan. The principle of the utility model is to use the hammer head and the toothed plate to crush the stone material step by step, and then use the exhaust fan to filter the powder material through the screen. The toothed plates are arranged in a stepped shape, and the distance between each toothed plate and the hammer head becomes smaller, so that the stone is gradually crushed and beaten into powder with the rotation of the hammer head. The multi-stage tooth plate can form multiple crushing cavities, which can be crushed into powder to improve the crushing efficiency. The number of crushing chambers can be designed according to the actual situation.

As an improvement, a buffer spring is provided between the toothed plate and the housing. Avoid damage to the toothed plate and hammer head by the material that cannot be crushed.

As a further improvement, an adjusting screw is fixed on the back of the toothed plate, and the buffer spring is sleeved on the adjusting screw; the adjusting screw penetrates the casing and is locked by a nut. The distance between the toothed plate and the casing can be adjusted.

As another further improvement, the feed port is arranged on the top of the shell, and a rebound tooth plate is arranged in the feed port; a stopper is arranged between the tooth plate on the opposite side of the rebound tooth plate and the shell plate. The rebound tooth plate is used to rebound the thrown stone during extrusion, and the baffle is used to prevent the stone from entering the cavity between the tooth plate and the shell, so that the object can be fully crushed in the machine and is not easily thrown out of the machine .

As an improvement, the baffle plate extends to the position where the hammer head moves to form a V-shaped return cavity. The airflow lifted by the rotation of the hammer head is blocked by the baffle to prevent it from gushing out from the feed port and causing atmospheric pollution.

As an improvement, the discharge port is arranged on the top of the shell and communicates with the crushing cavity; a screen is arranged in the discharge port. The screen screen filters the crushed powder, and only the powder that meets the requirements can pass through the screen.

As an improvement, the tooth plate above the rotating shaft is an arc-shaped whole block, and the tooth plate on the side of the rotating shaft and the lower tooth plate are arranged in a stepped shape.

As an improvement, the rotating shafts are two parallel, and no toothed plate is provided between the rotating shafts.

As an improvement, the rotation directions of the two shafts are opposite. The effect is achieved in the form of mutual strikes between the plate and hammer heads, which can reduce the wear of the hammer heads and reduce the consumption of electric energy.

The utility model has the advantages that the stone pulverizer with the above-mentioned structure has a simple structure and good crushing effect. The effect is achieved by the form of tooth plate hammer crushing. The rotating hammer head and the tooth plate form a crushing cavity. Through this form, the wear of the hammer head can be reduced, the consumption of electric energy can be reduced, and the production cost can be reduced; the output is large; after crushing The product has good prismatic shape; the consumption of wearing parts is small, suitable for ferrosilicon and coal grinding, and has the characteristics of high efficiency, large output and low energy consumption.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model. The arrows represent the trajectory of the stone when it is crushed.

FIG. 2 is a top view of the utility model.

Marking in the picture: 1 shell, 2 rotating shaft, 3 hammer, 4 tooth plate, 5 rebound tooth plate, 6 baffle plate, 7 return cavity, 8 exhaust fan, 9 screen mesh, 10 discharge port, 11 adjusting screw, 12 Buffer spring, 13 flywheels, 14 pulleys, 15 feed ports.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the specific embodiments.

As shown in FIG. 1 and FIG. 2 , the present invention includes a casing 1, which is provided with a feeding port 15 and a discharging port 10; the casing 1 is provided with a horizontal rotating shaft 2, and the The rotary shaft 2 is provided with a hammer head 3 that rotates with the rotary shaft 2 ; the rotary shaft extends out of the casing, and one end of the rotary shaft is provided with a flywheel 13 and the other end is provided with a pulley 14 . A plurality of arc tooth plates 4 connected end to end are arranged in the casing 1 along the outer edge of the rotation track of the hammer head 3; and the tooth plates 4 are arranged in a step-like manner, and the gap between each tooth plate 4 and the hammer head 3 varies from wide to narrow with the rotation direction of the hammer head 3, forming several independent crushing chambers; preferably the shaft 2 The upper tooth plate 4 is an arc-shaped whole piece, and the tooth plate 4 on the side of the rotating shaft 2 and the lower tooth plate 4 is arranged in a stepped shape. The discharge port 10 is connected with the exhaust fan 8 . A buffer spring 12 is provided between the toothed plate 4 and the housing 1 . Specifically, an adjusting screw 11 is fixed on the back of the toothed plate 4 , and the buffer spring 12 is sleeved on the adjusting screw 11 ; the adjusting screw 11 penetrates through the housing 1 and is locked by a nut.

The feed port 15 is arranged on the top of the housing 1 , and a rebound tooth plate 5 is arranged in the feed port 15 ; a baffle 6 is provided between the tooth plate 4 on the opposite side of the rebound tooth plate 5 and the housing 1 . The baffle plate 6 extends to the movement track of the hammer head 3 to form a V-shaped return cavity 7 . The discharge port 10 is arranged on the top of the casing 1 and communicates with the crushing chamber; the discharge port 10 is provided with a screen 9 .

The rotating shafts 2 are two parallel ones, and no toothed plate is arranged between the rotating shafts 2 and the rotating shafts 2 .

The stroke of the material is shown by the arrow. It enters between the toothed plate 4 and the hammer head 3 from the feeding port 15. As the distance between the toothed plate 4 and the hammer head 3 is gradually narrowing, the stone, the toothed plate 4 and the hammer head 3 squeeze each other so that the The stone is gradually crushed. The toothed plate 4 is arranged in multiple stages in a stepped shape. After being squeezed, the stone material enters the next-stage toothed plate 4, and the extrusion process from wide to narrow is repeated. The exhaust fan 8 is used to suck the powder and collect it for use.

The above are only the preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limitations of the present invention, and the protection scope of the present invention should be based on the scope defined by the claims. For those skilled in the art, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (9)

1. A stone material pulverizer comprises a shell, wherein a feeding hole and a discharging hole are formed in the shell; the method is characterized in that: a horizontal rotating shaft is arranged in the shell, and a hammer head rotating along with the rotating shaft is arranged on the rotating shaft; a plurality of arc toothed plates which are connected end to end are arranged in the shell along the outer edge of the rotating track of the hammer head; one surface of each toothed plate, which is close to the hammer, is provided with teeth, and a gap is reserved between the toothed plate and the hammer; the toothed plates are arranged in a step shape, and the gap between each toothed plate and the hammer head is from wide to narrow along the rotating direction of the hammer head to form a plurality of independent crushing cavities; the discharge hole is connected with an exhaust fan.

2. A stone mill as claimed in claim 1, characterized in that: and a buffer spring is arranged between the toothed plate and the shell.

3. A stone mill as claimed in claim 2, characterized in that: an adjusting screw is fixed at the back of the toothed plate, and the buffer spring is sleeved on the adjusting screw; the adjusting screw penetrates through the shell and is locked by a nut.

4. A stone mill as claimed in claim 1, characterized in that: the feed inlet is arranged at the top of the shell, and a rebound toothed plate is arranged in the feed inlet; and a baffle is arranged between the toothed plate on the side opposite to the rebounding toothed plate and the shell.

5. A stone mill as claimed in claim 4, characterized in that: the baffle extends to the hammer head movement track to form a V-shaped backflow cavity.

6. A stone mill as claimed in claim 1, characterized in that: the discharge port is arranged at the top of the shell and is communicated with the crushing cavity; and a screen is arranged in the discharge port.

7. A stone mill as claimed in claim 1, characterized in that: the pinion rack of pivot top is for being curved monoblock, and pivot side is the echelonment with the pinion rack of transferring and arranges.

8. A stone mill as claimed in claim 1, characterized in that: the rotating shafts are two parallel shafts, and no toothed plate is arranged between the rotating shafts.

9. A stone mill as claimed in claim 8, characterized in that: the rotating directions of the two rotating shafts are opposite.

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