High-efficiency vertical shaft pulverizer

Abstract

The application discloses a high-efficiency vertical shaft pulverizer, which comprises a shell, a pulverizing device arranged in the shell, a grading device arranged at the upper portion of the pulverizing device, a feeding port arranged at one side of the shell in communication, a discharging port arranged at the upper portion of the grading device in communication, an air inlet arranged at the bottom of the side surface of the shell, and a screen device arranged between the grading device and the pulverizing device.

Description

Technical Field

[0001] This utility model relates to the technical field of vertical shaft pulverizers, and in particular to a high-efficiency vertical shaft pulverizer. Background Technology

[0002] With the development of modern mechanical technology, grinding of Chinese medicinal herbs has begun to be done using pulverizers instead of the early manual grinding. Pulverizers are mainly used for crushing materials. Patent document C203316215U discloses an ultrafine pulverizer. This technical solution uses a hammer and toothed ring to cut and pulverize materials at high speed. The pulverized solid particles rise to the classifying impeller under the negative pressure outside the discharge port. After the high-speed rotation of the classifying impeller, gas-solid separation is achieved. The ultrafine powder of Chinese herbal medicine that meets the pulverization requirements, due to its small mass and low centrifugal force, is output from the discharge port with the air under the negative pressure. Larger solid particles, due to their heavy mass and high centrifugal force, are thrown outward and fall onto the pulverizing disc at the bottom. This technical solution mainly utilizes the cyclone generated by the rotation of the classifying impeller to screen solid particles. However, since most Chinese medicinal materials are lightweight plant fibers, even if the pulverized solid particles do not reach the required pulverization precision, they can easily be output from the discharge port with the air under the negative pressure, making it difficult to accurately control the pulverization precision.

[0003] Patent document CN216538865U discloses a dust-free pulverizing unit for Chinese medicinal materials. This technical solution uses a sieve to filter the dust discharged from the pulverizer and sends the dust that does not meet the requirements back to the pulverizer for reprocessing, thereby improving the control of pulverizing accuracy. However, since some dust will circulate in the connecting pipe between the sieve and the pulverizer during the pulverizing process, the pulverizing time is increased, which will reduce the pulverizing efficiency and also has the problem of large equipment size.

[0004] In summary, the relevant technologies for pulverizing Chinese medicinal materials suffer from problems such as difficulty in controlling pulverization precision, low pulverization efficiency, and large equipment size. Utility Model Content

[0005] In response to the problems in related technologies, this application discloses a high-efficiency vertical shaft pulverizer, which can not only accurately control the pulverization precision, but also has a compact structure, small equipment footprint, and high pulverization efficiency.

[0006] To achieve the above objectives, this application provides the following technical solution: a high-efficiency vertical shaft impact crusher, comprising a casing, a crushing device inside the casing, a grading device on the upper part of the crushing device, a feed inlet connected to one side of the casing, a discharge outlet connected to the upper part of the grading device, and an air inlet at the bottom of the side of the casing. The crushing device crushes the material, and the crushed qualified material is discharged from the discharge outlet through the grading device under the action of air force. A screen device is provided between the grading device and the crushing device. The screen device intercepts and screens large particles, and small particles can be graded by the grading device through the screen device.

[0007] By adopting the above technical solution, after the Chinese herbal medicine materials are crushed by the crushing device, they rotate and move towards the air outlet under the action of wind. The solid particles of Chinese herbal medicine that do not meet the crushing precision requirements are intercepted by the screen device and remain in the crushing device with the airflow to continue rotating until they are crushed to meet the crushing precision requirements. After being filtered by the screen device and separated by the grading device, they are discharged from the air outlet.

[0008] As a further embodiment of this application, the sieve device includes a filter mesh sieve, which is detachably mounted on the outside of the feed end of the grading device. This structure separates the space of the crushing device and the grading device into two relatively independent spaces, saving the circulation path in the process of cutting Chinese herbal medicine materials, saving cutting time, and is simple in structure, easy to install and maintain.

[0009] As a further aspect of this application, the sieve is cone-shaped. When solid particles of Chinese medicinal materials that do not meet the requirements for pulverization precision are intercepted by the sieve, they are less likely to be adsorbed onto the sieve. This structure facilitates the falling of solid particles and keeps the sieve clean.

[0010] As a further aspect of this application, the pulverizing device includes a pulverizing motor, which is located at the bottom of the casing. The pulverizing motor is poweredly connected to the pulverizing disc via a motor shaft. Multiple pulverizing blades are arranged around the pulverizing disc, and pulverizing toothed plates are fitted around the outer perimeter of the blades. The pulverizing toothed plates are fixedly mounted on the inner wall of the casing. This structure, by placing the pulverizing blades and pulverizing toothed plates at the bottom of the pulverizing device, not only facilitates high-speed cutting of large-particle Chinese medicinal materials but also drives the air inside the pulverizing device to rotate at high speed.

[0011] As a further aspect of this application, the grading device includes a grading frame, which is powered by a grading motor via a power shaft. The grading motor is located on the top outer side of the housing, and multiple grading blades are evenly distributed around the grading frame. This structure facilitates the grading blades rotating around the power shaft, driving the air to rotate at high speed for gas-solid separation.

[0012] As a further aspect of this application, the classifying blades are arranged at an angle, which matches the angle of the screening mesh. This structure helps the airflow generated by the rotation of the classifying blades to pass quickly through the screening mesh, reducing resistance.

[0013] As a further aspect of this application, the feed inlet is connected to a screw feeder. This structure helps to break the medicinal materials into relatively short and small material shapes during the feeding process before they enter the crushing device, and it also prevents the material from escaping from the feed inlet.

[0014] As a further aspect of this application, a negative pressure suction device is provided at the discharge port. This structure helps maintain suction at the discharge port, increasing the speed at which the screened solid particles move towards the discharge port with the air, thereby improving crushing efficiency.

[0015] In summary, the beneficial effects of this application are as follows: 1. By adopting a built-in screen device, the circulation path during solid particle crushing is shortened, crushing time is saved, and crushing efficiency is improved.

[0016] 2. By adopting the method of grading blades and screening screen being tilted at the same angle, the influence of screening screen on the wind force of grading device is minimized, thus taking into account both screening and gas-solid separation functions. Attached Figure Description

[0017] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0018] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the present application; Figure 2 This is a partial cross-sectional view of the structure of this application; Figure 3 This is a schematic diagram of the structure of the screening device of this application; Figure 4 This is a schematic diagram of the grading device of this application; Figure 5 This is a schematic diagram of the pulverizing device of this application.

[0019] Figure label annotations: 1. Machine casing; 11. Feed inlet; 12. Discharge outlet; 13. Air inlet; 2. Crushing device; 21. Crushing motor; 22. Motor shaft; 23. Crushing disc; 24. Crushing blade; 25. Crushing toothed plate; 3. Grading device; 31. Feed end; 32. Grading frame; 33. Power shaft; 34. Grading motor; 35. Grading blades; 4. Screening device; 41. Screening screen; 5. Screw feeder; 6. Negative pressure extraction device. Detailed Implementation

[0020] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects disclosed in this embodiment as detailed in the appended claims.

[0021] It should be noted that all directional indicators in the embodiments (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in the embodiments is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit this application. It is merely to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0023] To further understand the content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings: like Figure 1 , Figure 2 As shown, a high-efficiency vertical shaft impact crusher includes a casing 1, a crushing device 2 inside the casing 1, a grading device 3 on the upper part of the crushing device 2, a feed inlet 11 connected to one side of the casing 1, a discharge outlet 12 connected to the upper part of the grading device 3, and an air inlet 13 at the bottom of the side of the casing 1. The crushing device 2 crushes the material, and the crushed qualified material is discharged from the discharge outlet 12 through the grading device 3 under the action of air force. A screen device 4 is provided between the grading device 3 and the crushing device 2. The screen device 4 intercepts and screens large particles, and small particles can be graded by the grading device 3 through the screen device 4.

[0024] like Figure 2 , Figure 3As shown, the screen device 4 includes a filter mesh screen 41, which is detachably mounted on the outside of the feed end 31 of the grading device 3. The screen screen 41 is conical in shape.

[0025] like Figure 2 , Figure 5 As shown, the crushing device 2 includes a crushing motor 21, which is located on the outer side of the bottom of the housing 1. The crushing motor 21 is poweredly connected to the crushing disc 23 via a motor shaft 22. Multiple crushing blades 24 are arranged around the crushing disc 23, and crushing toothed plates 25 are fitted around the outer sides of the crushing blades 24. The crushing toothed plates 25 are fixedly installed on the inner wall of the housing 1. After the crushing motor 21 starts, it drives the crushing disc 23 to rotate at high speed via the motor shaft 22. The crushing blades 24 around the crushing disc 23, together with the outer crushing toothed plates 25, crush the material entering the crushing device. Air enters through the air inlet and rotates in the same direction as the crushing motor, forming an air vortex that drives the material to rotate within the crushing device.

[0026] like Figure 2 , Figure 4 As shown, the grading device 3 includes a grading frame 32, which is powered by a grading motor 34 via a power shaft 33. The grading motor 34 is located on the top outer side of the housing 1. Multiple grading blades 35 are evenly distributed around the grading frame 32. After starting, the grading motor 34 rotates in the opposite direction to the pulverizing motor 21. The grading motor 34 drives the grading frame 32 and the grading blades 35 to rotate in the opposite direction, thereby causing the airflow direction within the grading device 3 to be opposite to the airflow direction within the pulverizing device 2, thus achieving the grading and collection of solid particles in the mixed airflow.

[0027] When the gas-solid mixed airflow in the crushing device 2 enters the grading device 3 through the screen device 4, large particles are initially intercepted and screened by the screen 41 and then returned to the crushing device 2 for further crushing, while small particles pass through the screen device 4 and enter the grading device 3 for further grading.

[0028] The grading blades 35 are set at an angle, and the angle of inclination of the grading blades 35 is consistent with the angle of inclination of the screening screen 41.

[0029] like Figure 1 , Figure 2 As shown, the feed inlet 11 is connected to a screw feeder 5, which cuts the medicinal materials into relatively short and small shapes during the feeding process before they enter the crushing device, and prevents the materials from escaping from the feed inlet. The discharge outlet 12 is connected to a negative pressure extraction device 6, which creates a stable air pressure difference at the discharge outlet, thereby ensuring that the mixed gas is continuously discharged from the grading device.

[0030] The implementation principle of a high-efficiency vertical shaft pulverizer according to an embodiment of this application is as follows: After the material is crushed by the high-speed rotating crushing blades 24 in the crushing device 2, the gas-solid mixed airflow is screened by the screen device 4 and then enters the grading device 3. Large particles are screened by the particle screening screen 41 and remain in the crushing device 2 for further crushing. Small particles are graded by the high-speed rotating grading device 3 in the opposite direction. Small particles that meet the crushing precision continue to flow with the airflow and are discharged through the discharge port. Small particles that do not meet the crushing precision fall back into the crushing device 2 due to gravity and are crushed again.

[0031] Finally, it should be noted that the above disclosure is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. The scope of this application is limited only by the appended claims.

Claims

1. A high-efficiency vertical shaft impact crusher, comprising a casing (1), wherein an impact crushing device (2) is provided inside the casing (1), and a grading device (3) is provided on the upper part of the impact crushing device (2), a feed inlet (11) is provided on one side of the casing (1), a discharge outlet (12) is provided on the upper part of the grading device (3), and an air inlet (13) is provided at the bottom of the side of the casing (1), wherein the impact crushing device (2) crushes the material, and the crushed qualified material is discharged from the discharge outlet (12) through the grading device (3) under the action of air force, characterized in that: A screen device (4) is provided between the grading device (3) and the crushing device (2). The screen device (4) intercepts and screens large particles, and small particles can be graded by the grading device (3) through the screen device (4).

2. The high-efficiency vertical shaft pulverizer according to claim 1, characterized in that: The screen device (4) includes a filter mesh screen (41), which is detachably covered outside the feed end (31) of the grading device (3).

3. The high-efficiency vertical shaft pulverizer according to claim 2, characterized in that: The screening screen (41) is in the shape of a cone.

4. The high-efficiency vertical shaft pulverizer according to claim 1, characterized in that: The crushing device (2) includes a crushing motor (21), which is located on the outer side of the bottom of the housing (1). The crushing motor (21) is connected to the crushing disc (23) via a motor shaft (22). The crushing disc (23) is provided with multiple crushing blades (24) around its perimeter. Crushing tooth plates (25) are provided around the outer perimeter of the crushing blades (24). The crushing tooth plates (25) are fixedly installed on the inner wall of the housing (1).

5. A high-efficiency vertical shaft pulverizer according to claim 3, characterized in that: The grading device (3) includes a grading frame (32), which is powered by a grading motor (34) via a power shaft (33). The grading motor (34) is located on the top of the outer side of the housing (1), and multiple grading blades (35) are evenly arranged around the grading frame (32).

6. The high-efficiency vertical shaft pulverizer according to claim 5, characterized in that: The grading blades (35) are arranged at an angle, and the angle of the grading blades (35) is consistent with the angle of the sieve (41).

7. The high-efficiency vertical shaft pulverizer according to claim 1, characterized in that: The feed inlet (11) is connected to a screw feeder (5).

8. A high-efficiency vertical shaft pulverizer according to claim 1, characterized in that: The discharge port (12) is connected to a negative pressure material extraction device (6).

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