Multifunctional pulverizer for traditional Chinese medicine preparation

Abstract

The invention discloses a multifunctional pulverizer for traditional Chinese medicine preparation in the technical field of biopharmaceutical equipment. The multifunctional pulverizer comprises a pulverizer body; a smashing cavity is formed in the smashing machine body, a smashing mechanism and a pressurizing mechanism used for conveying gas into the smashing cavity are arranged in the smashing cavity, the top of the smashing cavity communicates with a feeding mechanism used for feeding medicinal materials, one side of the bottom of the smashing cavity communicates with a connecting pipe, and the other end of the connecting pipe communicates with a spiral channel. The top in the spiral channel communicates with a plurality of backflow pipelines, the backflow pipelines are used for changing the flow direction of fluid and enabling the fluid to flow back into the spiral channel in the direction opposite to the flow direction in the spiral channel, the tops of the backflow pipelines communicate with ascension pipes, the other ends of the ascension pipes communicate with a collecting tank, and a gas powder separation mechanism is arranged between the ascension pipes and the collecting tank; the spiral center of the spiral channel communicates with a sinking pipe, and the sinking pipe communicates with a circulating mechanism used for conveying powder back to the smashing cavity. According to the scheme, the smashing uniformity can be improved, and meanwhile the occurrence probability of excessive smashing is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of biological pharmaceutical equipment, and particularly relates to a multifunctional pulverizer for traditional Chinese medicine preparation. BACKGROUND

[0002] In the production process of traditional Chinese medicine preparation, pulverization is a key link. After traditional Chinese medicinal materials are pulverized, the surface area of the medicine can be increased, the dissolution of effective components can be facilitated, the bioavailability of the medicine can be improved, and the curative effect of the traditional Chinese medicine preparation can be improved. Traditional traditional Chinese medicine pulverizing equipment is relatively single, and with the development of the traditional Chinese medicine industry and the continuous improvement of the quality requirements of preparations, higher requirements are put forward for the performance and function of the pulverizer.

[0003] The existing traditional Chinese medicine pulverizer has many problems in actual application. For example, the traditional traditional Chinese medicine pulverizing equipment is relatively single, but with the development of the traditional Chinese medicine industry and the improvement of the quality requirements of preparations, higher requirements are put forward for the performance and function of the pulverizer. There are many problems in the application of the current traditional Chinese medicine pulverizer. For example, the traditional pulverizer mainly adopts a single pulverizing principle and structural design, such as a common hammer pulverizer, which mainly relies on high-speed rotating hammers to impact and pulverize the materials. For hard mineral medicinal materials, although the impact of the hammer can initially break them, it is difficult to achieve fine and uniform pulverization, and large pieces are easily left, which requires repeated pulverization. In this way, the qualified powder is repeatedly pulverized, leading to over-pulverization and energy waste.

[0004] In view of the defects of the prior art, a multifunctional pulverizer capable of solving the problem of uneven pulverization is needed to improve the pharmaceutical level. SUMMARY

[0005] In order to solve the above problems, the purpose of the present application is to provide a multifunctional pulverizer for traditional Chinese medicine preparation, which can improve the uniformity of pulverization and reduce the probability of over-pulverization, so as to meet the high requirements of the pulverization link in the production process of traditional Chinese medicine preparation.

[0006] In order to achieve the above purpose, the technical scheme of the present application is as follows: A multifunctional pulverizer for traditional Chinese medicine preparation, comprising a pulverizer body; a pulverizing cavity is arranged in the pulverizer body, a pulverizing mechanism for pulverizing medicinal materials and a pressurizing mechanism for conveying gas into the pulverizing cavity are arranged in the pulverizing cavity, a feeding mechanism for feeding medicinal materials is communicated with the top of the pulverizing cavity, a connecting pipe is communicated with one side of the bottom of the pulverizing cavity, a spiral channel is communicated with the other end of the connecting pipe, a plurality of backflow pipelines are communicated with the top of the spiral channel, the backflow pipelines are used for changing the flow direction of the fluid and flowing back into the spiral channel in a direction opposite to the flow direction in the spiral channel, the top of each backflow pipeline is communicated with an ascending pipe, the other end of the ascending pipe is communicated with a collection tank, and a gas-powder separation mechanism is arranged between the ascending pipe and the collection tank; a sinking pipe is communicated with the spiral center of the spiral channel, and a circulating mechanism for sending powder back to the pulverizing cavity is communicated with the sinking pipe.

[0007] The above approach has the following beneficial effects: 1. In this scheme, the medicinal materials to be pulverized are fed into the pulverizing chamber through the feeding mechanism, and then pulverized by the pulverizing mechanism. At the same time, the pressurizing mechanism is activated to deliver gas into the pulverizing chamber, so that the pulverized powder enters the spiral channel along the connecting pipe. When this part of the fluid (mixed gas and powder) passes through the return pipe (because the flow direction of the return pipe is opposite to that of the spiral channel), turbulence is generated. The pulverized powder (smaller particle size and lighter weight) flows upward along the return channel to the riser pipe, while the pulverized powder (larger particle size and heavier weight) continues to flow along the bottom of the spiral channel until it flows to the sinker pipe in the center of the spiral and falls into the circulation mechanism, thus re-entering the pulverizing chamber for pulverization. The pulverized powder floats to the gas-powder separation mechanism through the riser pipe. After the powder and gas are separated, the powder is finally collected in the collection tank.

[0008] Through the coordinated use of spiral channels, reflux pipes, risers, sinkers, and circulation mechanisms, substandard powder can be re-entered into the grinding chamber for further grinding, while properly ground powder is separated and collected. This screening and circulation process ensures that the medicinal powder achieves a uniform particle size, avoiding differences in efficacy caused by uneven grinding.

[0009] 2. This solution utilizes the turbulence generated in the return pipe by the pulverized mixed gas and powder, effectively separating the smaller, lighter, qualified powder from the larger, heavier, substandard powder, further improving the uniformity of pulverization. Utilizing fluid mechanics principles, the pulverized powder is screened through the return pipe; only qualified powder enters the riser pipe, while substandard powder is guided to the circulation mechanism for re-pulverization. This avoids over-pulverization, ensuring the particle size of the medicinal powder is within an appropriate range, meeting production requirements without wasting resources or affecting efficacy due to over-pulverization.

[0010] Substandard powder is re-entered into the grinding chamber for further grinding, avoiding the possibility of over-grinding at one time. This makes the entire grinding process more controllable, allowing for precise control of the powder particle size according to actual needs and reducing the risk of over-grinding.

[0011] 3. This solution, through a reasonable crushing and recycling mechanism, makes the crushing process more efficient, reduces energy waste caused by over-crushing or uneven crushing, and lowers energy consumption in the production process.

[0012] Furthermore, the crushing mechanism includes a motor and a grinding shaft; the bottom of the grinding shaft is rotatably fitted with the bottom of the crushing chamber, and the output shaft of the motor is axially fixedly connected to the grinding shaft; several crushing blades are arranged circumferentially on the grinding shaft.

[0013] Beneficial effects: By adjusting the speed of the motor, the speed of the grinding shaft can be controlled, thereby adjusting the grinding force and speed of the grinding blades to meet the grinding needs of different medicinal materials.

[0014] Furthermore, the pressurization mechanism includes a pump assembly, the output end of which is connected to the bottom of the crushing chamber.

[0015] Beneficial effects: The pump assembly delivers a stable supply of gas to the grinding chamber, which plays a crucial role in the grinding process. As the medicinal materials are ground within the chamber, the airflow carries the powder, ensuring its even distribution and increasing the contact between the materials and the grinding blades, thereby improving grinding efficiency and uniformity.

[0016] High-speed airflow can also impact and rub against medicinal materials to a certain extent, assisting the pulverizing mechanism in pulverizing the materials. Especially for some hard or fibrous medicinal materials, the impact of airflow can pulverize them better, making the pulverization effect more ideal.

[0017] The gas output from the pump assembly enters the bottom of the grinding chamber, forming an upward airflow that propels the pulverized powder upward, allowing it to smoothly enter the spiral channel along the connecting pipe. This achieves automatic powder conveying, preventing powder accumulation at the bottom of the grinding chamber and ensuring the continuity and smoothness of the grinding process.

[0018] Stable airflow ensures that the pulverized powder leaves the pulverizing chamber promptly, reducing the residence time of the powder within the chamber and thus increasing the overall production speed of the pulverizing equipment.

[0019] Meanwhile, a stable airflow can carry away the heat generated during the pulverization process. Many Chinese medicinal herbs contain heat-sensitive components, such as volatile oils, alkaloids, and enzymes. The heat generated during pulverization may damage or reduce the activity of these components, thus affecting their efficacy. The heat-carrying effect of the airflow can effectively reduce the temperature inside the pulverization chamber, preventing chemical changes caused by overheating, protecting the effective components of the herbs, and ensuring the quality and efficacy of Chinese medicine preparations.

[0020] Furthermore, the feeding mechanism includes a feeding port located at the top of the crusher body, which is connected to the crushing chamber, and a sealing door is rotatably connected to the feeding port.

[0021] Beneficial effects: The feeding port is located at the top of the pulverizer, allowing for easy feeding of medicinal materials simply by inserting them through the port. A sealing door is rotatably connected to the feeding port; this door can be closed during the pulverizing process to effectively prevent dust generated during pulverization from overflowing from the feeding port, thus avoiding dust pollution to operators and the surrounding environment.

[0022] Furthermore, the gas powder separation mechanism includes a converging pipe, a separating pipe, and an exhaust pipe. The converging pipe is used to connect all risers to the top of the separating pipe, the bottom of the separating pipe is connected to the collection tank, and the diameter of the separating pipe gradually decreases from top to bottom. The exhaust pipe is used to connect the separating pipe to the outside world, and the height of the exhaust pipe's inlet is lower than that of the converging pipe's outlet.

[0023] Beneficial effects: The converging pipe gathers all the gas and powder from the riser pipes and then enters the separation pipe. The diameter of the separation pipe gradually decreases from top to bottom. This design allows the flow rate of gas and powder in the separation pipe to gradually increase. At the same time, due to the reduction in pipe diameter, the mixture of gas and powder forms a stronger vortex in the pipe, which is beneficial to the sedimentation and separation of powder.

[0024] As the pipe diameter gradually decreases, the flow direction of the gas and powder mixture changes, and the powder settles more easily under the influence of gravity, separating from the gas. This improves the separation efficiency, ensures that more powder can be collected in the collection tank, and reduces powder loss.

[0025] This separation mechanism mainly relies on the natural sedimentation and swirling action of gas and powder in the separation pipe for separation, without the need for additional energy consumption, thus reducing the energy consumption of the equipment and improving energy utilization efficiency.

[0026] Furthermore, the circulation mechanism includes an impact groove and an inclined pipe located on one side of the bottom of the submerged pipe. One end of the impact groove is vertically connected to the bottom of the submerged pipe, the bottom of the inclined pipe is connected to the bottom of the submerged pipe, and the top of the inclined pipe is connected to the crushing chamber. A cylinder, a protrusion, and a piston block are provided inside the impact groove. The cylinder and the piston block are slidably engaged with the impact groove. The protrusion is fixedly connected to the side wall of the impact groove. A compression spring is placed between the cylinder and the impact groove. The end of the cylinder away from the compression spring is rotatably connected to the piston block. At least two sets of straight grooves are provided on the outer side of the cylinder. The straight grooves are arranged along the length of the cylinder. An inclined groove connects adjacent straight grooves. The protrusion is slidably engaged with the straight grooves and the inclined grooves, respectively. A touch switch is provided in the straight groove near the piston block. The touch switch is electrically connected to an electric valve. The electric valve is located on the path connecting the inclined pipe and the crushing chamber.

[0027] Beneficial effects: As gas and substandard powder accumulate in the sinking tube, the air pressure in the impact chamber gradually increases. When the air pressure reaches a certain level, it pushes the piston block to move, which in turn moves the cylinder. Under the synergistic action of the protrusion and the inclined groove, the cylinder rotates during its movement, thereby compressing the compression spring. When the protrusion switches to the straight groove, it triggers a touch switch, opening the electric valve. At the same time, the compression spring releases energy, causing the cylinder and piston block to move rapidly towards the bottom of the sinking tube, flushing the substandard powder accumulated at the bottom of the sinking tube towards the inclined pipe, ultimately causing it to re-enter the grinding chamber for further grinding.

[0028] This solution can automatically sense changes in air pressure within the impact chamber. Through the coordinated action of a series of mechanical components, it automatically returns substandard powder to the grinding chamber for further grinding, eliminating the need for manual intervention and improving the automation level of the production process. By utilizing air pressure and the movement of mechanical components to achieve powder circulation, no additional energy consumption is required. Compared to other circulation methods that require additional power units, this is more energy-efficient and reduces production costs.

[0029] Furthermore, the output end of the pump assembly is arranged along the tangential direction of the crushing chamber.

[0030] Beneficial effects: The pump assembly output end, which is arranged tangentially, can make the airflow form a rotating airflow in the grinding chamber. This rotating airflow can drive the medicinal materials and powder to rotate together, increasing the relative speed and collision opportunities between the medicinal materials and the grinding blades, thereby improving the grinding efficiency and enabling the medicinal materials to reach the required particle size in a shorter time.

[0031] The rotating airflow can evenly disperse the pulverized powder into the pulverizing chamber, preventing the powder from accumulating or agglomerating locally within the chamber, thus allowing the powder to mix more evenly with the airflow.

[0032] Furthermore, a first screen is also installed inside the connecting pipe.

[0033] Beneficial effects: The initial screening through the first screen can intercept most of the larger powder particles, preventing them from entering subsequent stages. This ensures that the powder particles entering subsequent stages are more uniform in size, reducing the processing volume of subsequent separation stages (spiral channel).

[0034] Furthermore, a second screen is installed at the bottom of the exhaust pipe.

[0035] Beneficial effects: The second screen can intercept fine powder particles entrained in the exhaust pipe, avoiding the loss of these powders, improving the powder collection rate, reducing the waste of raw materials, and lowering production costs.

[0036] Furthermore, the top of the inclined pipe is positioned near the output end of the pump assembly.

[0037] Beneficial effects: The top of the inclined pipe is located near the output end of the pump assembly. When the pump assembly delivers gas into the grinding chamber, the high-speed airflow passes over the top of the inclined pipe. Due to the high airflow velocity, according to fluid mechanics principles, the high-speed airflow can generate a stronger impact and driving effect on substandard powders, giving them higher speed and kinetic energy when they re-enter the grinding chamber. Simultaneously, when the gas passes over the top of the inclined pipe, a localized negative pressure is generated within the inclined pipe.

[0038] Higher speed and kinetic energy enable more intense collisions between the powder and the pulverizing blades, thereby improving the pulverizing effect, allowing the powder to reach the required particle size more quickly, and reducing pulverizing time.

[0039] The local negative pressure generated in the inclined pipe can promote the flow of air in the inclined pipe, so that the airflow can more smoothly carry the substandard powder into the crushing chamber, further improving the circulation efficiency. At the same time, it also reduces the resistance of the airflow in the pipe and reduces energy consumption. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural schematic diagram of the multifunctional pulverizer for preparing traditional Chinese medicine according to the present invention.

[0041] Figure 2 for Figure 1 Top view.

[0042] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0043] Figure 4 for Figure 3 A partial cross-sectional top view of the central spiral channel.

[0044] Figure 5 for Figure 4 A partial cross-sectional side view of the central spiral channel.

[0045] Figure 6 for Figure 3 A magnified view of a portion of point M in the middle.

[0046] Figure 7 for Figure 6 A schematic diagram of the structure of the central cylinder.

[0047] The reference numerals in the accompanying drawings of the instruction manual include: 1. Crusher body; 2. Feed inlet; 3. Spiral channel; 101. Crushing chamber; 102. Grinding shaft; 103. Pump assembly; 104. Connecting pipe; 105. First screen; 106. Converging pipe; 107. Separating pipe; 108. Collection tank; 109. Exhaust pipe; 110. Second screen; 111. Inclined pipe; 112. Impact groove; 113. Motor; 114. Protrusion; 115. Cylindrical; 116. Inclined groove; 117. Piston block; 118. Compression spring; 119. Straight groove; 120. Electric valve; 121. Touch switch; 122. Pressure relief valve; 301. Ascending pipe; 302. Return pipe; 303. Submerged pipe. Detailed Implementation

[0048] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0049] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0051] The following detailed description illustrates the specific implementation method: The basic implementation examples are as follows: Figures 1-7 As shown: A multi-functional pulverizer for preparing traditional Chinese medicine includes a pulverizer body 1; a pulverizing chamber 101 is provided inside the pulverizer body 1. In this embodiment, the cross-section of the pulverizing chamber 101 is circular. The pulverizing chamber 101 is provided with a pulverizing mechanism for pulverizing medicinal materials and a pressurizing mechanism for conveying gas into the pulverizing chamber 101.

[0052] Specifically, this embodiment provides one type of crushing method. Other crushing methods may also be used in some other embodiments. The crushing mechanism includes a motor 113 and a grinding shaft 102. The bottom of the grinding shaft 102 is rotatably engaged with the bottom of the crushing chamber 101. The output shaft of the motor 113 is fixedly connected to the grinding shaft 102 through a coupling. The motor 113 is installed at the center of the bottom of the crushing chamber 101 (a groove is specially provided in the crusher body 1 to accommodate the motor 113). Several crushing blades are arranged circumferentially on the grinding shaft 102. The crushing blades are welded and fixed to the grinding shaft 102.

[0053] Specifically, the pressurization mechanism includes a pump assembly 103. In this embodiment, the pump assembly 103 includes an air pump and conduits connected to the output and input ends of the air pump. Figure 3As shown, the output end of the air pump is connected to the bottom right side of the grinding chamber 101 via a conduit. Preferably, the conduit connected to the output end of the air pump is arranged along the tangential direction of the grinding chamber 101.

[0054] The top of the crushing chamber 101 is connected to a feeding mechanism for feeding medicinal materials. Specifically, the feeding mechanism includes a feeding port 2 opened on the top of the crusher body 1. The feeding port 2 is connected to the crushing chamber 101, and a sealing door is rotatably connected to the edge of the feeding port 2 by a hinge.

[0055] Combined with appendix Figure 3 Appendix Figure 4 and attached Figure 5 As shown, a connecting pipe 104 is connected to the bottom left side of the grinding chamber 101. Preferably, a first screen 105 is bonded and fixed inside the connecting pipe 104. A spiral channel 3 is connected to the left end of the connecting pipe 104. In this embodiment, the spiral center of the spiral channel 3 is the end, i.e., the outlet end, and the first end (i.e., the end away from the spiral center) of the spiral channel 3 is the inlet end. The inlet end of the spiral channel 3 is connected to the connecting pipe 104. Several return pipes 302 are connected to the top of the spiral channel 3. Specifically, the return pipes 302 are similar to the structure of a Tesla valve. The return pipes 302 are used to change the flow direction of the fluid and make it flow back into the spiral channel 3 in a direction contrary to the flow direction inside the spiral channel 3. The top of each return pipe 302 is connected to an ascending pipe 301. The other end of the ascending pipe 301 is connected to a collecting tank 108. A gas powder is provided between the ascending pipe 301 and the collecting tank 108. The final separation mechanism includes a gas-powder separation mechanism comprising a converging pipe 106, a separating pipe 107, and an exhaust pipe 109. The converging pipe 106 connects all risers 301 to the top of the separating pipe 107. Preferably, a pressure relief valve 122 is installed on the connection path between the converging pipe 106 and the risers 301. The bottom of the separating pipe 107 connects to the collection tank 108, and the diameter of the separating pipe 107 gradually decreases from top to bottom. The exhaust pipe 109 connects the separating pipe 107 to the outside. In this embodiment, the exhaust pipe 109 is shaped like a "┓", with the bottom of the exhaust pipe 109 serving as the air inlet. The height of the air inlet of the exhaust pipe 109 is lower than the outlet of the converging pipe 106. Preferably, a second screen 110 is bonded and fixed to the bottom of the exhaust pipe 109.

[0056] The spiral center of the spiral channel 3 is connected to a sinker tube 303, which is connected to a circulation mechanism for sending powder back to the grinding chamber 101.

[0057] Specifically, in conjunction with the appendix Figure 6 and attached Figure 7As shown, the circulation mechanism includes an impact groove 112 located on the left side of the bottom of the submerged pipe 303 and an inclined pipe 111 located on the right side of the bottom of the submerged pipe 303. The right end of the impact groove 112 is vertically connected to the bottom of the submerged pipe 303, the bottom of the inclined pipe 111 is connected to the bottom of the submerged pipe 303, and the top of the inclined pipe 111 is connected to the crushing chamber 101. Preferably, the top of the inclined pipe 111 is arranged close to the output end of the pump assembly 103, that is, the gas delivered by the pump assembly 103 passes above the top of the inclined pipe 111 first. The impact groove 112 is provided with a cylinder 115, a protrusion 114, and a piston block 117. The cylinder 115 and the piston block 117 are slidably engaged with the impact groove 112. The protrusion 114 is integrally formed with the side wall of the impact groove 112. A compression spring 118 is placed between the left end of the cylinder 115 and the inner wall of the impact groove 112 (in this embodiment, the left end of the cylinder 115 is smooth, and the contact between the compression spring 118 and the cylinder 115 will not affect the rotation of the cylinder 115. In some other embodiments, a partition plate can be rotatably connected to the left end of the cylinder 115 to ensure smooth rotation of the cylinder 115). The right end of the cylinder 115 is rotatably connected to the piston block 117. At least two sets of straight grooves 119 are provided on the outer side of the cylinder 115. The straight grooves 119 are arranged along the length of the cylinder 115. An inclined groove 116 is connected between adjacent straight grooves 119. The protrusion 114 is slidably engaged with the straight grooves 119 and the inclined grooves 116 respectively. A touch switch 121 is provided in the right end of each straight groove 119, specifically at the junction of the straight groove 119 and the inclined groove 116. The touch switch 121 is electrically connected to an electric valve 120. The electric valve 120 is fixedly connected to the inclined pipe 111 and the crushing chamber 101 by screws.

[0058] The specific implementation process is as follows: The operator feeds the medicinal materials to be pulverized into the pulverizing chamber 101 through the feeding port 2. After feeding, the sealing door is closed, ensuring a tight seal between the sealing door and the edge of the feeding port 2 to guarantee airtightness during the pulverizing process and prevent dust from spilling out. The motor 113 and pump assembly 103 are started. The motor 113 drives the grinding shaft 102 to rotate at high speed via a coupling, and the pulverizing blades on the grinding shaft 102 pulverize the medicinal materials. Simultaneously, the air pump in the pressurization mechanism delivers gas to the bottom of the pulverizing chamber 101 through a conduit. The gas enters along the tangential direction of the pulverizing chamber 101, creating a rotating airflow between the medicinal materials and powder within the pulverizing chamber 101. This increases the relative speed and collision opportunities between the medicinal materials and the pulverizing blades, improving pulverizing efficiency and uniformity.

[0059] The pulverized mixed gas and powder enter the spiral channel 3 through the connecting pipe 104. The first screen 105 inside the connecting pipe 104 performs preliminary screening of the powder, intercepting larger powder particles. Inside the spiral channel 3, the mixed gas and powder generate turbulence when passing through the return pipe 302. Powder that meets the pulverization standard flows upward along the return pipe to the riser pipe 301, while powder that does not meet the standard (under the influence of gravity) continues to flow along the bottom of the spiral channel 3.

[0060] Until the substandard powder reaches the spiral center of the spiral channel 3, it enters the sinking tube 303 under the combined action of gravity and air pressure. The substandard powder accumulates in the sinking tube 303 (in this embodiment, the powder does not fill the sinking tube 303; what accumulates in the sinking tube 303 is a mixture of powder and gas, i.e., colloid). As the substandard powder continues to enter the sinking tube, the gas contained therein also accumulates in the impact groove. Since the space of the impact groove 112 is limited, as the substandard powder continues to enter and the gas continues to accumulate, its volume gradually increases, but the volume of the impact groove 112 is fixed. This inevitably leads to an increase in the air pressure inside the impact groove 112. The air pressure in the impact groove 112 increases (due to the presence of the pressure relief valve 122, the air pressure in the impact groove 122 will gradually increase to the threshold. In this embodiment, the preset pressure value of the pressure relief valve 122 (e.g., 10.5 Pa) is slightly higher than the threshold value of the impact groove 122 (e.g., 10 Pa). The threshold value of the impact groove 122 corresponds to the condition for triggering the compression spring 118 to release energy. For example, when the air pressure value in the impact groove 122 reaches 10 Pa, the protrusion 144 triggers the touch switch 121, causing the energy accumulated in the compression spring to be released), pushing the piston block 117 to move. The piston block 117 drives the cylinder 115 to move. Under the synergistic effect of the protrusion 114 and the inclined groove 116, the cylinder 115 rotates and squeezes the compression spring 118. When the bump 114 switches into the straight groove 119 (i.e., when the air pressure in the impact groove 112 rises to the threshold), the touch switch 121 is triggered. In this embodiment, the touch switch 121 uses a contact system (existing technology), which typically includes two main contacts: a fixed contact and a movable contact. When the switch is pressed (i.e., when the bump 114 contacts the touch switch 121), the movable contact contacts the fixed contact, thereby connecting the circuit; when released, the movable contact separates from the fixed contact, and the circuit is disconnected.The electric valve 120 opens (the electric valve 120 is driven to open and close by an electric actuator (existing technology). When the touch switch 121 is contacted, the electric actuator is energized, and the motor drives the valve stem or valve core to rotate or move linearly, opening the valve; when the touch switch 121 is released, the electric actuator is de-energized, the motor stops working, and the valve resets). The spring 118 releases energy, causing the cylinder 115 and piston block 117 to move rapidly towards the bottom of the sinker tube 303 (the protrusion 114 slides along the straight groove 119), applying an instantaneous impact force to the powder at the bottom of the sinker tube 303, thus pushing the sinker tube 303... 3. Substandard powder accumulated at the bottom is pushed towards the inclined pipe 111 (since the bottom of the sinker 303 is perpendicular to the impact groove 112, and the inclined pipe 111 is opposite to the impact groove 112, substandard powder and gas can more easily enter the inclined pipe 111). When the protrusion 114 slides to the end of the straight groove 119, the protrusion 114 collides with the cylinder 115. The shock wave generated after the collision will act on the gas and powder in the impact groove. Under the combined action of air pressure and the impact of the piston block 117, the substandard powder overcomes its own gravity and re-enters the crushing chamber 101 for crushing. Since the top of the inclined pipe 111 is close to the output end of the pump assembly 103, the airflow has a stronger impact and driving effect on the substandard powder, giving it higher speed and kinetic energy when it re-enters the crushing chamber 101, resulting in a more intense collision with the crushing blades and improving the crushing effect. Furthermore, according to Bernoulli's principle, when the high-speed airflow (output end of the pump assembly) flows through the top of the inclined pipe, a local low-pressure zone is formed at the pipe outlet (the higher the flow velocity, the lower the pressure). At this time, the air pressure at the outlet of the inclined pipe 111 is significantly lower than the overall air pressure of the grinding chamber, providing additional auxiliary power for the substandard powder to rise against gravity. The circulation mechanism achieves powder conveying through intermittent mechanical impact and air pressure difference, without needing to continuously overcome the overall high pressure of the grinding chamber 101.

[0061] When the air pressure in the riser pipe 301-return pipe 302-impact tank 112 rises to the preset pressure value of the pressure relief valve 122, the pressure relief valve 122 opens, and the riser pipe 301 transports the pulverized powder to the gas-powder separation mechanism. The converging pipe 106 in the gas-powder separation mechanism gathers all the gas and powder from the riser pipe 301 and enters the separation pipe 107. The diameter of the separation pipe 107 gradually decreases from top to bottom, causing the gas and powder to form a swirling flow inside the pipe. The powder settles down under gravity and separates from the gas. The separated gas is discharged through the exhaust pipe 109. The second screen 110 at the bottom of the exhaust pipe 109 intercepts fine powder particles entrained in the gas, preventing them from being released into the external environment.

[0062] The collection tank 108 at the bottom of the separation pipe 107 collects the powder that has been pulverized to the required standard, thus completing the powder collection process.

[0063] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific structures and / or characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A multi-functional pulverizer for preparing traditional Chinese medicine, characterized in that: The device includes a pulverizer body (1); the pulverizer body (1) is provided with a pulverizing chamber (101), the pulverizing chamber (101) is provided with a pulverizing mechanism for pulverizing medicinal materials and a pressurizing mechanism for conveying gas into the pulverizing chamber (101), the top of the pulverizing chamber (101) is connected to a feeding mechanism for feeding medicinal materials, one side of the bottom of the pulverizing chamber (101) is connected to a connecting pipe (104), the other end of the connecting pipe (104) is connected to a spiral channel (3), the top of the spiral channel (3) is connected to several return pipes (302), the return pipes (302) is used to change the direction of fluid flow and return it to the spiral channel (3) in a direction contrary to the flow direction in the spiral channel (3). The top of the return pipe (302) is connected to the riser pipe (301), and the other end of the riser pipe (301) is connected to the collection tank (108). A gas powder separation mechanism is provided between the riser pipe (301) and the collection tank (108). The spiral center of the spiral channel (3) is connected to the sinker pipe (303), and the sinker pipe (303) is connected to the circulation mechanism for sending the powder back to the crushing chamber (101).

2. The multifunctional pulverizer for preparing traditional Chinese medicine according to claim 1, characterized in that: The crushing mechanism includes a motor (113) and a grinding shaft (102); the bottom of the grinding shaft (102) is rotatably engaged with the bottom of the crushing chamber (101), and the output shaft of the motor (113) is axially fixedly connected to the grinding shaft (102); a number of crushing blades are arranged circumferentially on the grinding shaft (102).

3. The multifunctional pulverizer for preparing traditional Chinese medicine according to claim 2, characterized in that: The pressurization mechanism includes a pump assembly (103), the output end of which is connected to the bottom of the crushing chamber (101).

4. The multi-functional pulverizer for preparing traditional Chinese medicine according to claim 3, characterized in that: The feeding mechanism includes a feeding port (2) located on the top of the crusher body (1), which is connected to the crushing chamber (101). A sealing door is rotatably connected to the feeding port (2).

5. The multifunctional pulverizer for preparing traditional Chinese medicine according to claim 4, characterized in that: The gas powder separation mechanism includes a converging pipe (106), a separating pipe (107), and an exhaust pipe (109). The converging pipe (106) is used to connect all risers (301) to the top of the separating pipe (107). The bottom of the separating pipe (107) is connected to the collection tank (108). The diameter of the separating pipe (107) gradually decreases from top to bottom. The exhaust pipe (109) is used to connect the separating pipe (107) to the outside. The height of the air inlet of the exhaust pipe (109) is lower than that of the outlet of the converging pipe (106).

6. The multi-functional pulverizer for preparing traditional Chinese medicine according to claim 5, characterized in that: The circulation mechanism includes an impact groove (112) and an inclined pipe (111) located on one side of the bottom of the sinking pipe (303). One end of the impact groove (112) is vertically connected to the bottom of the sinking pipe (303), the bottom of the inclined pipe (111) is connected to the bottom of the sinking pipe (303), and the top of the inclined pipe (111) is connected to the crushing chamber (101). A cylinder (115), a protrusion (114), and a piston block (117) are provided inside the impact groove (112). The cylinder (115) and the piston block (117) are slidably engaged with the impact groove (112), the protrusion (114) is fixedly connected to the side wall of the impact groove (112), and a cylinder (115) is placed between the impact groove (112). There is a compression spring (118), and the end of the cylinder (115) away from the compression spring (118) is rotatably connected to the piston block (117). At least two sets of straight grooves (119) are opened on the outer side of the cylinder (115). The straight grooves (119) are arranged along the length of the cylinder (115). An inclined groove (116) connects adjacent straight grooves (119). The protrusion (114) slides with the straight grooves (119) and the inclined grooves (116) respectively. A touch switch (121) is provided in the end of the straight groove (119) near the piston block (117). The touch switch (121) is electrically connected to an electric valve (120). The electric valve (120) is located on the communication path between the inclined pipe (111) and the crushing chamber (101).

7. The multifunctional pulverizer for preparing traditional Chinese medicine according to claim 6, characterized in that: The output end of the pump assembly (103) is arranged along the tangential direction of the crushing chamber (101).

8. The multifunctional pulverizer for preparing traditional Chinese medicine according to claim 7, characterized in that: A first screen (105) is also provided inside the connecting pipe (104).

9. The multifunctional pulverizer for preparing traditional Chinese medicine according to claim 8, characterized in that: A second screen (110) is provided at the bottom of the exhaust pipe (109).

10. The multifunctional pulverizer for preparing traditional Chinese medicine according to claim 9, characterized in that: The top of the inclined pipe (111) is located near the output end of the pump assembly (103).

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