CN208213299U - A kind of free wheel base and centrifugal bump pulverizer for centrifugal bump pulverizer - Google Patents

Abstract

The utility model discloses a flywheel seat used for a centrifugal collision pulverizer and a centrifugal collision pulverizer, comprising a base and a seat head arranged concentrically from bottom to top, and the center of the bottom of the flywheel seat has a hole penetrating through the base and extending into the seat head. shaft hole; the base is disc-shaped, and the base has a plurality of first connection points arranged around its center; the seat head has a frustum-shaped head crown; the radius of the base is greater than the maximum of the seat head Radius; the maximum radius of the seat head is less than the distance from the connection point to the center of the base, the flywheel seat can effectively deflect the particles, and protect the connection point between the flywheel and the flywheel seat from being impacted by the particle flow, eliminating the need for safety Hidden danger.

Description

Flywheel seat for centrifugal collision pulverizer and centrifugal collision pulverizer

technical field

The utility model belongs to the technical field of powder crushing, in particular to a flywheel seat used for a centrifugal collision crushing machine.

Background technique

At present, with the development of industrial technology, both military and civilian fields need to use crushing technology. Crushing refers to crushing raw materials into fine particles or ultrafine powders. According to the way of applying force in the crushing process, the common crushing devices can be divided into: extrusion crushing, impact crushing, shearing crushing and splitting crushing.

Impact crushing means that the high-speed movement of the working parts impacts the material or the high-speed movement of the material impacts the fixed wall to cause crushing. At present, pulverizers are mostly used in the impact crushing process. The principle of this kind of pulverizer is to accelerate the particles to the crushing wall (plate) by setting a high-speed rotating impeller, and exert various forces such as impact, friction, and shear on the particles. , crush the particles to a certain fineness. In this type of pulverizer, a stable connection of the impeller to the rotating shaft is especially important. At present, the impeller and the rotating shaft are mostly connected by an impeller seat, such as a kind of impeller seat shown in Figure 1, which consists of a bottom 14 and a head 15. The center of the bottom 14 has a shaft hole for connecting the transmission shaft, and the bottom 14 is a circle. Disc-shaped, its top surface is used for fixed connection with the impeller.

Utility model content

The purpose of the utility model is to provide a flywheel seat for a centrifugal impact crusher, which solves the technical problem that when the material is sucked into the crushing chamber, it first impacts the connection point between the flywheel seat and the flywheel and causes the flywheel to loosen.

In order to achieve the above object, the utility model provides a flywheel seat for a centrifugal collision pulverizer, the flywheel seat includes a base and a seat head arranged concentrically from bottom to top, and the center of the bottom of the flywheel seat has a The shaft hole in the head; the base is disc-shaped, and the base has a plurality of first connection points arranged around its center; the seat head has a frustum-shaped head crown; the radius of the base is larger than that of the seat The maximum radius of the head; the maximum radius of the seat head is less than the distance from the connection point to the center of the base.

Further, the top end surface of the crown is a spherical surface.

Further, the seat head also has a connection part between the crown and the base, and the diameter of the connection part is smaller than the diameter of the bottom of the crown.

Further, the crown and the connection part are integrally formed and fixedly connected to each other.

In the second aspect, the utility model provides a centrifugal collision pulverizer using the above-mentioned flywheel seat. The centrifugal collision pulverizer includes a casing, a transmission shaft and a rotating mechanism; a cylindrical crushing chamber is arranged inside the casing, and the The rotating mechanism is located in the crushing chamber; the top of the casing is provided with an opening; the rotating mechanism includes the above-mentioned flywheel seat and the disc-shaped rotating impeller fixedly connected to each other; the transmission shaft passes through the The bottom protrudes into the crushing chamber and is fixedly connected with the flywheel seat; the rotating impeller includes a disk-shaped impeller bottom, and the center of the impeller bottom is provided with an impeller shaft hole and a plurality of second shaft holes arranged around the impeller shaft hole. Two connection points and vanes, the positions of the second connection point and the vanes are mutually staggered, and the vanes extend radially along the bottom of the impeller with a length greater than the radius of the bottom of the impeller.

Further, the bottom of the rotating impeller has a plurality of return openings distributed in the circumferential direction, and the positions of the return openings and the second connection point and the vanes are mutually staggered.

Further, the shape of the return opening is any one of circle, strip and rectangle.

Further, the end of the vane away from the center of the bottom of the impeller is provided with a wear-resistant head.

Further or preferably, it is characterized in that the casing includes: a circular bottom plate, a top plate, and a side wall plate, and the space enclosed by the bottom plate, the top plate, and the side wall plate is configured as the crushing chamber; the drive shaft Extending through the bottom plate into the crushing chamber; the top plate has the opening.

Further, the centrifugal collision pulverizer further includes a plurality of arc-shaped liners, which are located in the pulverization chamber and arranged around the rotating mechanism, and are detachably connected to the side wall plates.

The flywheel seat provided by the utility model includes a base and a seat head concentrically arranged from bottom to top, and the center of the bottom of the flywheel seat has a shaft hole extending through the base to the seat head; the base is disc-shaped, and the base has A plurality of first connection points arranged around its center; the seat head has a frustum-shaped crown; the radius of the base is greater than the maximum radius of the seat head; the maximum radius of the seat head is smaller than the connection point to The distance between the center of the base and the flywheel seat can effectively deflect the particles, protecting the connection point between the flywheel and the flywheel seat from being impacted by the particle flow, and eliminating potential safety hazards.

Description of drawings

Fig. 1 is a front view of a flywheel seat in the prior art.

Fig. 2 is a front view of a flywheel seat used in a centrifugal collision pulverizer provided by the utility model.

Fig. 3 is a top view of a flywheel seat used in a centrifugal collision pulverizer provided by the utility model.

Fig. 4 is a front view of a centrifugal collision pulverizer using the flywheel seat of the present invention.

Fig. 5 is a front view of a rotating impeller of a centrifugal collision pulverizer using a flywheel seat of the present invention.

Fig. 6 is a front view of a rotating impeller of a centrifugal collision pulverizer using a flywheel seat of the present invention.

In the picture:

1. Base 2. Seat head 3. Shaft hole 4. First connection point 5. Transmission shaft 6. Crushing chamber 7. Opening 8. Flywheel seat 9. Rotary impeller 10. Bottom plate 11. Top plate 12. Side wall plate 13 Lining plate 14. Bottom 15. Head 21. Head crown 22. Connecting part 91. Impeller bottom 92. Vane 93. Return port 94. Wear-resistant head 95. Second connection point 96. Impeller seat hole.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Figures 2 to 6, the flywheel seat provided by the utility model includes a base 1 and a seat head 2 arranged concentrically from bottom to top, and the center of the bottom of the flywheel seat has a hole extending through the base 1 and extending into the seat head 2 shaft hole 3; the base 1 is disc-shaped, and the base 1 has a plurality of second connection points 95 arranged around its center; it should be understood that the second connection points 95 are the first connection with the above-mentioned flywheel The points 4 cooperate with each other, and their positions correspond to each other; the seat head 2 has a truncated seat crown; the diameter of the base 1 is greater than the diameter of the bottom of the seat head 2; the radius of the bottom of the seat head 2 is smaller than the connection The distance from the point to the center of the base 1.

The effect of adopting the truncated seat crown is: when the particles are sucked into the flywheel, some particles move to the edge of the flywheel according to the above-mentioned working principle of the flywheel, but there are still some particles that do not change significantly in the direction of motion under the action of inertia, and continue to move downward. Move until it hits the connection between the bottom of the wheel and the flywheel seat, causing an impact on it. After this impact lasts for a period of time, the connection between the flywheel and the flywheel seat will be destroyed and the flywheel will become loose, affecting the working efficiency of the flywheel. During the process, the flywheel fell off and a safety accident occurred. The flywheel seat with a circular truncated seat crown can effectively deflect the particles, protect the connection point between the flywheel and the flywheel seat from the impact of the particle flow, and eliminate potential safety hazards. It should be understood that the dimensional parameters of the truncated seat crown are properly set by those skilled in the art according to the movement of the particle flow, and the dimensional parameters such as the length of the generatrix or the angle between the generatrix and the horizontal plane do not constitute a limitation to the present invention. limits.

Its top end surface that has the conical truncated crown 21 can be plane, also can adopt spherical surface. The use of the crown 21 on the top of the spherical surface can enhance the deflection effect on the particle flow. In addition, when the flywheel and the flywheel seat are fixedly connected to each other, the top of the spherical crown 21 can protect the hands and provide a support point for the hands during installation.

The seat head 2 can be set in the shape of a perfect circular frustum as a whole, that is, the crown 21 is directly connected with the base 1 . In some other embodiments, the seat head 2 also has a connecting portion 22, which is arranged between the crown 21 and the base 1, and the diameter may be smaller than the maximum diameter of the crown 21. The seat head 2 with the above-mentioned settings has an overall structure similar to that of a mushroom. type structure. The crown 21 and the connecting portion 22 can be set separately, or integrally formed and fixedly connected to each other. The integrally formed seat head 2 can be processed by turning process.

In a second aspect, the utility model provides a centrifugal collision pulverizer using the above-mentioned flywheel seat, as shown in Figure 4, the centrifugal collision pulverizer includes a casing, a transmission shaft 5 and a rotating mechanism; Cylindrical crushing chamber 6, the rotating mechanism is located in the crushing chamber 6; the structure of the crushing chamber 6 is based on the prior art, as in some embodiments, the casing includes a circular bottom plate 10 and a top plate 11, and a side wall plate 12, the space enclosed by the bottom plate 10, the top plate 11 and the side wall plate 12 is configured as the crushing chamber 6; the top of the casing is provided with an opening 7; the transmission shaft 5 passes through The bottom of the casing extends into the crushing chamber 6; the rotating mechanism includes a flywheel seat 8 and a disc-shaped rotating impeller 9 that are fixedly connected to each other, and the flywheel seat 8 is connected to the transmission shaft 5 Fixed connection.

The operation process of the centrifugal collision pulverizer provided by the utility model is as follows: the rotating impeller 9 rotates at a high speed under the drive of the motor to generate a strong centrifugal force, and a negative pressure is formed in the center of the rotating impeller 9, and the negative pressure is used in each cubic meter of the intake air. Mix about 100 grams of coarse powder with a particle size of less than 1mm, and then be sucked into the crushing chamber 6, and diffuse from the center of the rotating impeller 9 to the surroundings under the action of centrifugal force, so that the material can obtain greater kinetic energy together with the high-speed gas in the crushing chamber , accelerate the material to a linear velocity of about 180m/s, so that the material particles are thrown to the inner wall of the crushing chamber 6 and collide with it to be crushed. At the same time, the rebound of the inner wall of the crushing chamber 6 changes the direction of movement, and then with Other particles collide with each other to be further crushed. Repeatedly, the particles collide with each other and are crushed by various forces such as shearing and friction, and finally achieve fine crushing. The crushed materials are sucked out of the crushing chamber after the materials are qualified through process control.

In the centrifugal collision pulverizer provided by the utility model, the function of the rotating impeller 9 is to generate negative pressure through the rotation to suck the particles, and then apply a certain speed to the inner wall of the crushing chamber 6 through the centrifugal force generated by the rotation. In this embodiment, (as shown in FIGS. 5 and 6 ) the impeller includes a disk-shaped impeller bottom 91, which is centrally provided with an impeller seat hole 96 and a plurality of second connections arranged around the impeller seat hole 96. The point 95 and the vane 92 , the positions of the second connection point 95 and the vane 92 are mutually staggered, and the vane 92 extends radially along the impeller bottom 91 and its length is greater than the radius of the impeller bottom 91 . When the impeller rotates at a high speed, the role of the vane 92 is to generate negative pressure to first suck the particles to the center area close to the vane 92, and then throw the particles to the front end of the vane 92 by centrifugal force, so that the particles hit the inner wall of the crushing chamber 6 , to complete the crushing of particles.

Due to the frequent contact and friction of the particles during the operation of the rotating impeller 9, the vane 92 is severely worn, especially at the end far away from the center of the rotating impeller 9. In some preferred embodiments, the vane 92 is equipped with a wear-resistant Head 94. The wear-resistant head 94 is made of wear-resistant material, and it can be arranged integrally with the vane 92, and can also be arranged separately for easy replacement.

Due to the repeated high-speed collisions between the particles and the inner wall of the crushing chamber 6, it is easy to wear the inner wall of the crushing chamber 6. In order to facilitate the maintenance of the crushing chamber 6, as an improved embodiment, the centrifugal impact crusher also includes multiple arcs. Shaped liner 13 is located in the crushing chamber 6 and arranged around the rotating mechanism, and is detachably connected to the side wall 12 .

In this paper, specific examples are used to illustrate the inventive concept in detail, and the descriptions of the above embodiments are only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, any obvious modifications, equivalent replacements or other improvements made without departing from the inventive concept should be included within the protection scope of the present utility model .

Claims (10)

1. A flywheel seat for a centrifugal impact crusher, characterized in that the flywheel seat includes a base and a seat head concentrically arranged from bottom to top, and the center of the bottom of the flywheel seat has a shaft extending through the base into the seat head hole; the base is disc-shaped, and the base has a plurality of first connection points arranged around its center; the seat head has a frustum-shaped head crown; the radius of the base is greater than the maximum radius of the seat head ; The maximum radius of the seat head is smaller than the distance from the connecting point to the center of the base. 2. The flywheel seat for a centrifugal impact crusher according to claim 1, wherein the top end surface of the crown is a spherical surface. 3. The flywheel seat for a centrifugal impact crusher according to claim 1, wherein the seat head also has a connecting portion between the crown and the base, and the diameter of the connecting portion is less than The diameter of the base of the crown. 4 . The flywheel seat for a centrifugal impact crusher according to claim 3 , wherein the crown and the connecting portion are integrally formed and fixedly connected to each other. 5. A centrifugal collision pulverizer, characterized in that the centrifugal collision pulverizer comprises a casing, a transmission shaft and a rotating mechanism; a cylinder-shaped crushing chamber is arranged in the casing, and the rotating mechanism is located in the crushing chamber The top of the casing is provided with an opening; the rotating mechanism includes a flywheel seat and a disk-shaped rotating impeller as described in any one of claims 1 to 4 that are fixedly connected to each other; the transmission shaft passes through the machine The bottom of the shell protrudes into the crushing chamber and is fixedly connected with the flywheel seat; the rotating impeller includes a disc-shaped impeller bottom, and the center of the impeller bottom is provided with an impeller shaft hole and a plurality of holes arranged around the impeller shaft hole. A second connection point and a vane, the positions of the second connection point and the vane are staggered from each other, and the vane extends radially along the bottom of the impeller, and its length is greater than the radius of the bottom of the impeller. 6. The centrifugal collision pulverizer according to claim 5, characterized in that, the bottom of the rotating impeller has a plurality of return ports distributed in the circumferential direction, and the return ports are mutually connected with the second connection point and the positions of the vanes. stagger. 7. The centrifugal collision mill according to claim 6, characterized in that, the shape of the return opening is any one of circle, strip and rectangle. 8 . The centrifugal impact mill according to claim 6 , wherein a wear-resistant head is provided at the end of the vane away from the center of the bottom of the impeller. 9. The centrifugal collision pulverizer according to any one of claims 5-8, wherein the casing comprises: a circular bottom plate and a top plate, and a side wall plate, and the bottom plate, the top plate and the side wall plate are surrounded by a The space in the crushing chamber is configured as the crushing chamber; the transmission shaft extends into the crushing chamber through the bottom plate; the top plate has the opening. 10. The centrifugal collision pulverizer according to claim 9, characterized in that, the centrifugal collision pulverizer further comprises a plurality of arc-shaped liners, and the liners are located in the pulverization chamber and arranged around the rotating mechanism , and detachably connected with the side wall.