Ultrafine pulverizer

Abstract

The utility model discloses an ultra-fine pulverizer which comprises an installation base, a pulverizing mechanism, a transmission mechanism and a feeding mechanism, the pulverizing mechanism comprises a pulverizing bin and a pulverizing impeller, a pulverizing bin front cover is hinged to the front side of the pulverizing bin, a feeding port is formed in the center of the pulverizing bin front cover, and a feeding pipe is connected to the corresponding feeding port; a material receiving opening used for being in butt joint with a feeding mechanism is formed in the feeding pipe, a discharging opening is formed in the upper portion of a rear cover plate of the smashing bin, a discharging pipe is installed in the discharging opening, an inner hole of the discharging pipe is of an eccentric structure relative to an outer ring, and the distance between the inner hole of the discharging pipe and the center of the smashing bin can be changed by rotating the discharging pipe. And the transmission mechanism comprises a driving shaft which penetrates through the rear cover of the crushing bin and is connected with the crushing impeller. According to the utility model, the feeding hole is formed in the front cover of the crushing bin, so that the structure is simpler, materials can be more sufficiently collided and sheared with the blades of the crushing impeller, and the crushing efficiency is improved; and by arranging the discharging pipe of an eccentric structure, the discharging thickness can be adjusted more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverizers, in particular to an ultra-fine pulverizer. Background Art

[0002] Ultrafine pulverizers are mainly used to crush materials into ultrafine particles and are widely used in pharmaceutical, food, chemical and other industries. At present, there are still some areas that need to be optimized in existing ultrafine pulverizers. For example, the pulverizing mechanism of an ultrafine pulverizer with announcement number CN207745917U and the new ultrafine pulverizer with announcement number CN113617458A both have the following problems: (1) The discharge port is set on the pulverizing chamber cover, which needs to be connected to a material collection system such as a cyclone separation cylinder, making it inconvenient to open the pulverizing chamber cover, and the feed port is set on one side of the transmission mechanism. Since the drive shaft needs to be installed in the center of the pulverizing chamber, the feed port cannot be set in the center of the pulverizing chamber, which will also affect the pulverizing effect; (2) To adjust the coarseness of the discharge, it is necessary to adjust the upper and lower positions of the pulverizing chamber cover, making the entire adjustment mechanism complicated and inconvenient to adjust. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides an ultra-fine grinding machine with simple structure, convenient adjustment and high grinding efficiency.

[0004] The technical scheme adopted by the utility model is as follows: an ultra-fine pulverizer comprises a mounting base, a pulverizing mechanism, a transmission mechanism and a feeding mechanism, the pulverizing mechanism comprises a pulverizing bin and a pulverizing impeller rotatably arranged in the pulverizing bin, the pulverizing bin is fixedly mounted on the mounting base, a pulverizing bin front cover is hingedly connected to the front side of the pulverizing bin, a feed port is provided on the pulverizing bin front cover corresponding to the rotation center of the pulverizing impeller, a feed pipe is connected to the outer side of the pulverizing bin front cover corresponding to the feed port, a receiving port for docking with the feeding mechanism is provided on the feed pipe; a discharge port is provided on the upper part of the rear cover plate of the pulverizing bin, a discharge pipe is installed in the discharge port, the inner hole of the discharge pipe is an eccentric structure relative to the outer ring, and the distance of the inner hole of the discharge pipe relative to the center of the pulverizing bin can be changed by rotating the discharge pipe; the transmission mechanism comprises a driving shaft which passes through the rear cover of the pulverizing bin and is connected to the pulverizing impeller.

[0005] Furthermore, the crushing impeller includes a rotating disk, on the circumference of which a plurality of large blades are evenly distributed, and between two adjacent large blades there are two or more small blades, the length of the large blades on the side close to the front cover of the crushing bin is greater than the length of the small blades, the length of the large blades on the side close to the rear cover of the crushing bin is equal to the length of the small blades, and the lengths of the large blades and the small blades on the side close to the front cover of the crushing bin are greater than the lengths on the side close to the rear cover of the crushing bin.

[0006] Furthermore, the outer ends of the large blades and the small blades are both inlaid with wear-resistant strips.

[0007] Furthermore, a material guide plate is provided on the inner side of the front cover at the upper part of the feed port. The material guide plate is in a semicircular shape with the rotation center of the grinding impeller as the center of the circle and is inclined toward one side of the grinding impeller.

[0008] Furthermore, a guide groove is arranged beside the discharge port.

[0009] Furthermore, a detachable multi-cavity inner ring is installed in the inner sleeve of the crushing bin.

[0010] Furthermore, the feed pipe is connected to an air inlet pipe which is in communication with the feed port.

[0011] Furthermore, an openable observation cover is provided on the top of the feed pipe.

[0012] Furthermore, the feeding mechanism includes a hopper, a feeding pipe is connected to the discharge end at the bottom of the hopper, the end of the feeding pipe matches the receiving port on the feed pipe, a feeding screw is arranged in the feeding pipe, and the feeding screw is connected to the feeding drive motor.

[0013] Furthermore, the feeding pipe is fixedly connected to a feeding mounting seat arranged on the top of the crushing bin.

[0014] The beneficial effects of the utility model are:

[0015] (1) The utility model sets the feed port on the front cover of the crushing bin, so that the front cover of the crushing bin does not need to be connected to a bulky material collection system, thereby reducing the overall weight of the front cover of the crushing bin, making it more convenient to open the front cover of the crushing bin and more conducive to cleaning the crushing bin;

[0016] (2) The feed port corresponds to the rotation center of the crushing impeller, so that the material entering through the feed port can collide and shear with the crushing impeller blades more fully, thereby improving the crushing efficiency;

[0017] (3) By installing an eccentric discharge pipe at the discharge port, when the coarseness of the discharge needs to be adjusted, it is only necessary to rotate the discharge pipe to change the distance between the inner hole of the discharge pipe and the center of the crushing bin. Compared with the prior art that requires adjusting the upper and lower positions of the crushing bin cover, the structure is simpler and the adjustment is more convenient;

[0018] (4) By arranging a material guide plate on the inner side of the front cover of the crushing bin, the space in the crushing bin is compressed, which enables the material to contact the blades more fully, thereby improving the crushing efficiency and crushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the front side of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the back side of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the utility model when the front cover of the crushing bin is opened.

[0022] Figure 4 It is a structural schematic diagram of the utility model in which the front cover of the crushing bin is opened and the crushing impeller is removed.

[0023] Figure 5 It is a cross-sectional schematic diagram of the utility model.

[0024] Figure 6 It is a structural schematic diagram of the pulverizing impeller of the utility model.

[0025] In the figure: mounting base 1, crushing bin 2, crushing bin front cover 201, feed pipe 202, air inlet pipe 203, observation cover 204, rear cover plate 205, discharge pipe 206, multi-cavity inner ring 207, crushing impeller 208, turntable 2081, large blades 2082, small blades 2083, wear-resistant strips 2084, feed port 209, guide plate 210, material receiving port 211, guide groove 212, discharge port 213, feeding mechanism 3, hopper 301, feed pipe 302, feed mounting seat 303, feed screw 304, feed drive motor 305, drive shaft 4. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and carefully below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0027] like Figure 1-Figure 5 As shown, an ultra-fine grinding machine of this embodiment includes a mounting base 1, a grinding mechanism, a transmission mechanism, and a feeding mechanism 3.

[0028] The crushing mechanism includes a crushing bin 2, which is a circular shell. A removable multi-cavity inner ring 207 is sleeved and installed inside the crushing bin 2. The multi-cavity inner ring 207 is covered with a large number of holes and can be removed for cleaning. A crushing impeller 208 is rotatably connected in the crushing bin 2, a crushing bin front cover 201 is hinged on the front side of the crushing bin 2, and a rear cover plate 205 is fixedly connected to the back of the crushing bin 2. The crushing bin 2 is fixedly installed on the mounting base 1.

[0029] A feed port 209 is provided on the crushing bin front cover 201 corresponding to the rotation center of the crushing impeller 208, and a feed pipe 202 is connected to the outer side of the crushing bin front cover 201 corresponding to the feed port 209, and a material receiving port 211 for docking with the feeding mechanism 3 is provided on the feed pipe 202. The feed port 209 of the utility model is provided on the openable crushing bin front cover 201, thereby avoiding the influence of the transmission mechanism on the feed, so that it can be provided corresponding to the rotation center of the crushing impeller 208, so that the material just added is farther from the material passing gap formed between the crushing impeller 208 and the multi-cavity inner ring 207, and the material can be more fully collided and sheared with the crushing impeller blades, thereby improving the crushing efficiency.

[0030] In this embodiment, the feed pipe 202 is connected to an air inlet pipe 203 which is in communication with the feed port 209, and clean air or cold / hot air from the outside can be connected through the air inlet pipe 203. An openable observation cover 204 is provided on the top of the feed pipe 202, and the state of the material in the feed pipe 202 can be observed by opening the observation cover 204.

[0031] In order to further improve the crushing effect and crushing efficiency, in this embodiment, a guide plate 210 is provided on the inner side of the front cover at the upper part of the feed port 209. The guide plate 210 is in the shape of a semicircle with the rotation center of the crushing impeller 208 as the center, and is inclined toward the crushing impeller 208. By providing the guide plate 210, the space in the crushing bin 2 is compressed, so that the material can be more fully in contact with the blades of the crushing impeller 208.

[0032] like Figure 3 , Figure 5 As shown, in this embodiment, the feeding mechanism 3 includes a hopper 301, and a feeding pipe 302 is connected to the discharge end at the bottom of the hopper 301. The feeding pipe 302 is fixedly connected to a feeding mounting seat 303 arranged on the top of the crushing bin 2. The end of the feeding pipe 302 matches the receiving port 211 on the feed pipe 202. A feeding screw 304 is arranged in the feeding pipe 302, and the feeding screw 304 is connected to a feeding drive motor 305. Driven by the feeding drive motor 305, the feeding screw 304 in the feeding pipe 302 rotates at a uniform speed, so that the material is discharged from the feeding pipe 302 at a uniform speed.

[0033] like Figure 2 , Figure 4As shown, a discharge port 213 is provided on the upper part of the rear cover plate 205 of the crushing bin 2, a guide groove 212 is provided beside the discharge port 213, a discharge pipe 206 is installed in the discharge port 213, the inner hole of the discharge pipe 206 is an eccentric structure relative to the outer ring, and the distance of the inner hole of the discharge pipe 206 relative to the center of the crushing bin 2 can be changed by rotating the discharge pipe 206. Under the action of centrifugal force, the farther away from the rotation center of the crushing impeller 208, the smaller the particle size of the material, and the coarseness of the powder during discharge can be adjusted by rotating the discharge pipe 206 to change the distance of the inner hole of the discharge pipe 206 relative to the center of the crushing bin 2.

[0034] The transmission mechanism includes a driving shaft 4 that passes through the rear cover plate 205 of the crushing bin 2 and is connected to the crushing impeller 208 , and the other end of the driving shaft 4 is connected to an external driving source.

[0035] like Figure 6 As shown, in this embodiment, the crushing impeller 208 includes a rotating disk 2081, and a plurality of large blades 2082 are evenly distributed on the circumference of the rotating disk 2081, and two or more small blades 2083 are arranged between two adjacent large blades 2082, the length of the large blade 2082 close to the side of the front cover 201 of the crushing bin is greater than the length of the small blade 2083, the length of the large blade 2082 close to the side of the rear cover of the crushing bin 2 is equal to the length of the small blade 2083, and the length of the large blade 2082 and the small blade 2083 close to the side of the front cover 201 of the crushing bin is greater than the length close to the side of the rear cover of the crushing bin 2. Through the above structural design, the lengths of the front and rear blades of the crushing impeller 208 are unequal, the blades are sparse and longer at the end close to the feed (close to the side of the crushing bin front cover 201), and the blades are dense and short at the rear end. After the material enters and is initially crushed at the front end of the blade, it enters the inner area of ​​the crushing impeller 208 for further crushing under the interaction of centrifugal force and structures such as the turntable 2081, and finally discharged from the discharge port 213. In order to increase the service life of the large blade 2082 and the small blade 2083, wear-resistant strips 2084 are embedded at the outer ends of the large blade 2082 and the small blade 2083.

[0036] In addition, the crushing bin 2, the crushing bin front cover 201, and the rear cover plate 205 can all adopt a double-layer structure, and a heat conduction system is set between the layers, which can transfer heat through the flow of water or other media inside the shell to achieve heating or cooling.

[0037] With the help of the teachings in the foregoing description and the related drawings, a person skilled in the art will be able to think of many modifications and other embodiments of the present invention. Therefore, it is to be understood that the present invention is not limited to the specific embodiments disclosed, and modifications and other embodiments are considered to be included within the scope of the appended claims. Although specific terms are used herein, they are used only in a general and descriptive sense and not for limitation.

Claims

1. An ultrafine pulverizer, comprising a mounting base (1), a pulverizing mechanism, a transmission mechanism, and a feeding mechanism (3), characterized in that: The pulverizing mechanism comprises a pulverizing bin (2), a pulverizing impeller (208) rotatably disposed in the pulverizing bin (2), the pulverizing bin (2) being fixedly mounted on the mounting base (1), a pulverizing bin front cover (201) being hingedly connected to the front side of the pulverizing bin (2), a feed opening (209) being provided on the pulverizing bin front cover (201) corresponding to the rotation center of the pulverizing impeller (208), a feed pipe (202) being connected to the outer side of the pulverizing bin front cover (201) corresponding to the feed opening (209), and the feed pipe (202) ) is provided with a receiving port (211) for docking with a feeding mechanism (3); a discharge port (213) is provided on the upper part of the rear cover plate (205) of the crushing bin (2), a discharge pipe (206) is installed in the discharge port (213), the inner hole of the discharge pipe (206) is eccentric relative to the outer ring, and the distance of the inner hole of the discharge pipe (206) relative to the center of the crushing bin (2) can be changed by rotating the discharge pipe (206); the transmission mechanism includes a drive shaft (4) that passes through the rear cover of the crushing bin (2) and is connected to the crushing impeller (208).

2. The ultrafine pulverizer according to claim 1, characterized in that: The pulverizing impeller (208) comprises a rotating disk (2081), a plurality of large blades (2082) are evenly distributed on the circumference of the rotating disk (2081), and two or more small blades (2083) are arranged between two adjacent large blades (2082), the length of the large blade (2082) on the side close to the front cover (201) of the pulverizing bin is greater than the length of the small blade (2083), the length of the large blade (2082) on the side close to the rear cover of the pulverizing bin (2) is equal to the length of the small blade (2083), and the length of the large blade (2082) and the small blade (2083) on the side close to the front cover (201) of the pulverizing bin is greater than the length on the side close to the rear cover of the pulverizing bin (2).

3. The ultrafine pulverizer according to claim 2, characterized in that: The outer ends of the large blade (2082) and the small blade (2083) are both inlaid with wear-resistant strips (2084).

4. The ultrafine pulverizer according to claim 1, characterized in that: A material guide plate (210) is provided on the inner side of the front cover at the upper part of the material feed port (209); the material guide plate (210) is in the shape of a semicircle with the rotation center of the crushing impeller (208) as the center of the circle, and is inclined toward one side of the crushing impeller (208).

5. The ultrafine pulverizer according to claim 1, characterized in that: A guide groove (212) is provided next to the discharge port (213).

6. The ultrafine pulverizer according to claim 1, characterized in that: A detachable multi-cavity inner ring (207) is installed in a sleeve mounted on the inner side of the crushing bin (2).

7. The ultrafine pulverizer according to claim 1, characterized in that: The feed pipe (202) is connected to an air inlet pipe (203) which is in communication with a feed port (209).

8. The ultrafine pulverizer according to claim 1, characterized in that: An openable observation cover (204) is provided on the top of the feeding pipe (202).

9. The ultrafine pulverizer according to claim 1, characterized in that: The feeding mechanism (3) comprises a hopper (301), a feeding pipe (302) is connected to the bottom discharge end of the hopper (301), the end of the feeding pipe (302) matches the receiving port (211) on the feed pipe (202), a feeding screw (304) is arranged in the feeding pipe (302), and the feeding screw (304) is connected to a feeding drive motor (305).

10. The ultrafine pulverizer according to claim 9, characterized in that: The feeding pipe (302) is fixedly connected to a feeding mounting seat (303) arranged on the top of the crushing bin (2).

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