Traditional Chinese medicine decoction piece medicinal material sterilization device

Abstract

This invention discloses a sterilization device for traditional Chinese medicine decoction pieces, comprising an outer steam cylinder and an inner steam cylinder coaxially arranged inside, forming a jacketed space between them. A heating plate at the bottom of the outer steam cylinder heats the sterilization liquid to generate steam. The inner steam cylinder has a baffle plate on its side wall that opens inwards due to pressure difference, eliminating cold bridging while uniformly introducing steam. An arc-shaped plate supported by a spring is located above the inner steam cylinder. When condensate accumulates, its gravity presses down on the arc-shaped plate, causing it to deflect and guide the water to the inner wall for drainage. When the arc-shaped plate presses down, a linkage limit rod inserts into a plum blossom ring at the top of the rotating shaft to lock the turbulence fan, preventing water droplets from splashing and contaminating the medicinal materials. The transmission spring continuously stores energy. The upper and lower ends of the placement cylinder for the medicinal materials are pressed together by springs, using a breathable plate to hold a hydrophobic and breathable membrane to prevent liquid water from seeping in. This invention achieves a mechanical linkage of uniform steam penetration, automatic condensate diversion, and anti-splashing, ensuring the high-temperature sterilization quality and drying and moisture-proof properties of the decoction pieces.

Description

Technical Field

[0001] This invention relates to the field of equipment for processing Chinese herbal medicine slices, and specifically to a sterilization device for Chinese herbal medicine slices. Background Technology

[0002] Chinese medicinal herbs are susceptible to microbial contamination during processing and storage. Sterilization is a key physical process to ensure the quality of Chinese medicinal herbs and the safety of medication. Chinese medicinal herb sterilization equipment is a special treatment device used to kill bacteria, fungi and spores attached to the surface and inside of Chinese medicinal herbs. It usually uses high temperature and high pressure steam as the sterilization medium to achieve a sterilization effect with strong penetration and no chemical residue.

[0003] In the existing large-scale production of Chinese herbal medicine slices, single-layer vertical or horizontal high-pressure sterilizers are usually used for batch processing. In actual production operations, operators load the herbs to be processed into porous trays or mesh baskets and push them into the sterilization chamber. Then, the chamber door is closed. After the equipment is started, the external steam generator directly forces high-temperature and high-pressure steam into the sterilization chamber, which is at room temperature. The steam diffuses in the chamber and comes into full contact with the herbs for heat exchange. The latent heat released by the high-temperature steam causes the proteins of microorganisms to coagulate and denature, thereby completing the sterilization process. After the set sterilization time requirement is reached, the exhaust and depressurization are carried out to discharge the materials.

[0004] The existing technology has a drawback: the sterilization method of directly introducing high-temperature steam into a single-layer chamber structure leads to severe condensation on the inner wall of the sterilization chamber during the initial steam introduction. Since the sterilization chamber is at room temperature when it leaves the factory and during initial operation, when high-temperature steam suddenly enters, there is a huge temperature difference between the metal inner wall of the chamber and the high-temperature steam. When the steam comes into contact with the low-temperature chamber wall, it will quickly liquefy and condense into a large number of water droplets. This structural condensation caused by excessive temperature difference not only consumes a lot of steam heat energy, resulting in slow heating in the chamber and difficulty in quickly establishing and maintaining a stable high-temperature sterilization environment, but also causes a large amount of suddenly generated condensate to drip or adhere to the surface of the medicinal materials, resulting in localized excessive moisture in the medicinal materials, which seriously affects the overall sterilization quality and subsequent storage of the Chinese herbal medicines. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a sterilization device for Chinese herbal medicine slices in response to the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a sterilization device for traditional Chinese medicine decoction pieces, comprising an outer steam cylinder with an external cylindrical dome structure, and further comprising: The inner steam cylinder is coaxially disposed inside the outer steam cylinder, and a jacket space is formed between the outer steam cylinder and the inner steam cylinder. Both the outer steam cylinder and the inner steam cylinder have through holes at their bottoms. Multiple brackets are fixedly connected between the bottom of the inner steam cylinder and the inner wall of the outer steam cylinder; a heating plate is installed at the bottom of the inner wall of the outer steam cylinder. Multiple mounting holes are provided on the side wall of the inner steam cylinder; A baffle is rotatably connected in each of the mounting holes. The top of the baffle is rotatably connected to the top edge of the mounting hole via a pin. When the internal pressure of the jacket between the outer steam cylinder and the inner steam cylinder is greater than the internal pressure of the inner steam cylinder, the baffle is deflected and opened towards the inner side of the inner steam cylinder by the pressure difference. A placement mechanism is located at the center of the interior of the steam inner cylinder. The placement mechanism includes a placement cylinder, the outer wall of which is fixed to the inner wall of the steam inner cylinder by multiple fixing plates.

[0007] Preferably, a support leg is fixedly connected to the bottom of the outer wall of the steam cylinder; A drain pipe is installed at the bottom of the outer wall of the steam cylinder, and a valve is installed on the drain pipe; A door panel one is installed at the opening on the side wall of the outer steam cylinder, and a door panel two is installed at the corresponding opening on the inner steam cylinder. A sealed connecting sleeve is fixedly connected between the outer steam cylinder and the inner steam cylinder where the door panel one is located.

[0008] Preferably, an anti-condensation mechanism is provided above the interior of the steam inner cylinder. The anti-condensation mechanism includes a fixing ring fixedly connected to the upper part of the inner wall of the steam inner cylinder, and the fixing ring has multiple mounting grooves along the circumferential direction. Multiple arc-shaped plates are rotatably connected to the inner wall of each mounting slot via pins; Multiple springs are connected between each of the arc-shaped plates and the inner wall of the steam cylinder, and the springs push the arc-shaped plates to maintain a horizontal reset state.

[0009] Preferably, a baffle fan is provided above the placement cylinder, and a vertical rotating shaft is fixed through the center of the fan blades of the baffle fan; The transmission box is installed inside the inner steam cylinder by a bracket, and one end of the transmission box is fixedly extended outward through the inner steam cylinder and the outer steam cylinder; An electric motor is installed on the outer wall of the steam cylinder, and the output end of the electric motor is connected to the extension end of the transmission box. A transmission rod is installed at the other end of the transmission box, with the outer wall of the transmission rod inserted upward into a groove opened at the bottom of the rotating shaft; A coil spring is sleeved on the outer wall of the transmission rod, and the two ends of the coil spring are fixedly connected to the transmission rod and the rotating shaft, respectively.

[0010] Preferably, a limiting component is also provided above the interior of the steam inner cylinder, and an exhaust pipe is fixedly inserted through the center of the top of the steam inner cylinder; A cross-shaped fixing sleeve is fixedly connected to the inside of the exhaust pipe, and a movable rod is vertically slidably connected to the inner wall of the cross-shaped fixing sleeve; A circular plate is fixedly connected to the bottom of the movable rod; Multiple limiting rods are fixedly connected downwards to the bottom of the circular plate; A plum blossom ring is fixedly sleeved on the top extension end of the rotating shaft, and the edge of the plum blossom ring has multiple notches. A cross-shaped movable sleeve is fixedly fitted onto the upper outer wall of the movable rod; a movable ring is movably fitted onto the outer wall of the exhaust pipe. Spring three is sleeved on the outer wall of the movable rod and located between the cross-shaped fixed sleeve and the cross-shaped movable sleeve.

[0011] Preferably, the outer wall of the exhaust pipe is provided with a plurality of sliding holes in the vertical direction, and the outer end of the cross-shaped movable sleeve movably passes through the sliding holes and is fixedly connected to the movable ring; The inner edge of the arc-shaped plate is located above the movable ring. When the gravity of the condensate forces the arc-shaped plate to deflect downward, the inner edge of the arc-shaped plate presses down on the movable ring, causing the limiting rod to move down synchronously and insert into the notch of the plum blossom ring to restrict the rotation of the shaft. The ultimate output torque of the coil spring in its maximum torsional energy storage state is less than the overall shear yield torque of the limiting rod.

[0012] Preferably, the placement mechanism is provided with a blocking mechanism to prevent liquid water from seeping in. The blocking mechanism includes two ventilated plates respectively disposed at the top and bottom of the placement cylinder. Multiple T-shaped rods are fixedly connected to the top and bottom of the placement cylinder at equal intervals around the circumference, and the edge of the vent plate is perforated and slidably sleeved on the outer wall of the T-shaped rods; Multiple springs are sleeved on the outer wall of the T-shaped rod and located outside the ventilated plate. The springs use their own elasticity to push the upper and lower ventilated plates to press against the upper and lower end faces of the placement cylinder.

[0013] Preferably, a return pipe is fixedly installed at the top of the exhaust pipe, and the other end of the return pipe extends downward and is fixedly inserted through the outer wall of the steam outer cylinder to connect to the internal jacket space at the bottom of the steam outer cylinder.

[0014] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This sterilization device for Chinese herbal medicine slices forms an annular jacketed space by coaxially setting an inner steam cylinder inside the outer steam cylinder. The bottom heating plate heats the sterilization liquid to generate steam. In conjunction with a unidirectionally opening baffle installed in the side wall of the inner steam cylinder, the high-pressure steam generated in the jacket can first heat the inner steam cylinder from the outside to reduce the temperature difference between the inside and outside. Then, under the action of pressure difference, the baffle is pushed open and evenly sprayed into the inner steam cylinder. This effectively eliminates the cold bridge effect and prevents a large amount of condensation from suddenly forming on the inner wall of the inner steam cylinder due to excessive temperature difference, thus ensuring that the Chinese herbal medicine slices are in a stable high-temperature sterilization environment.

[0015] 2. This sterilization device for Chinese herbal medicine slices uses multiple upward-converging arc-shaped plates connected to the upper part of the inner steam cylinder, with a supporting spring connecting the arc-shaped plates to the inner wall of the inner steam cylinder. During the sterilization process, when the condensate from the rising steam adheres to and accumulates on the arc-shaped plates, the gravity of the condensate can overcome the elastic force of the spring, forcing the arc-shaped plates to tilt downward around the pin axis. This directs the condensate to the inner wall of the inner steam cylinder and slides down the inner wall to the bottom to drain it out. This prevents the condensate from dripping directly onto the Chinese herbal medicine slices below, causing localized over-wetting and deterioration of the medicinal materials or loss of effective components.

[0016] 3. This sterilization device for Chinese herbal medicine slices, by setting a movable ring on the outside of the exhaust pipe and fixing a circular plate with a limit rod at the bottom of the connected movable rod, and installing a plum blossom ring on the top of the turbulence fan shaft, allows the curved plate to deflect downwards due to the gravity of the condensate water, pressing down on the movable ring and driving the limit rod to move down and insert into the plum blossom ring to lock the shaft. The transmission rod continues to rotate, torsionally storing energy in the coil spring. This achieves automatic stopping of the turbulence fan during the condensate water diversion stage to prevent water droplets from splashing from the fan blades and contaminating the Chinese herbal medicine. After the water is drained, the coil spring releases the stored energy to quickly restore the steam turbulence circulation.

[0017] 4. This sterilization device for Chinese herbal medicine slices utilizes a spring two that provides thrust by slidingly connecting breathable plates to the top and bottom of the placement cylinder and attaching them to the outer T-shaped rod. This allows the spring two to firmly clamp and press the hydrophobic and breathable membrane between the end face of the placement cylinder and the breathable plate. Combined with the characteristic of the hydrophobic and breathable membrane that allows water vapor to pass through but blocks liquid water droplets from penetrating, this device ensures that high-temperature steam effectively penetrates the placement cylinder to kill bacteria in the medicinal materials while precisely intercepting condensate dripping from the top, thus ensuring that the Chinese herbal medicine slices remain dry and moisture-proof during sterilization. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the steam outer cylinder of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the outer steam cylinder of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the steam inner cylinder of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the anti-condensation structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the exploded structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C; Figure 10 For the present invention Figure 8 Enlarged structural diagram at point D; Figure 11 This is a schematic diagram of the exploded structure of the blocking mechanism and the placement mechanism of the present invention.

[0019] In the diagram: 1. Steam outer cylinder; 2. Return pipe; 3. Support leg; 4. Door panel 1; 5. Connecting sleeve; 6. Steam inner cylinder; 7. Placement mechanism; 71. Placement tube; 72. Fixing plate; 73. Door panel two; 8. Anti-condensation mechanism; 81. Fixing ring; 82. Arc plate; 83. Spring 1; 84. Baffle fan; 85. Rotating shaft; 86. Transmission box; 87. Motor; 88. Transmission rod; 89. Coil spring; 810. Limiting component; 8101. Movable ring; 8102. Cross-shaped fixing sleeve; 8103. Movable rod; 8104. Spring three; 8105. Cross-shaped movable sleeve; 8106. Circular plate; 8107. Limiting rod; 8108. Plum blossom ring; 9. Blocking mechanism; 91. Ventilation plate; 92. T-shaped rod; 93. Spring II; 10. Heating plate; 11. Bracket; 12. Mounting hole; 13. Baffle; 14. Exhaust pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-11This invention provides a sterilization device for Chinese herbal medicine slices, including an outer steam cylinder with a cylindrical dome structure. The bottom of the outer wall of the outer steam cylinder is fixedly connected to a support leg for stable support of the sterilization device. An inner steam cylinder is coaxially arranged inside the outer steam cylinder. Multiple supports are fixedly connected between the bottom of the inner steam cylinder and the inner wall of the outer steam cylinder. The inner steam cylinder is suspended and supported inside the outer steam cylinder by the supports. An annular jacket space is formed between the outer steam cylinder and the inner steam cylinder. During the high-temperature steam sterilization process, the jacket is filled with high-temperature steam, which heats the inner steam cylinder from the outside, reduces the temperature difference between the inside and outside of the inner steam cylinder, and prevents condensation from forming on the inner wall of the inner steam cylinder.

[0022] A heating plate is installed at the bottom of the inner wall of the outer steam cylinder to heat the sterilization liquid stored in the jacket space at the bottom of the outer steam cylinder, causing the sterilization liquid to boil and generate high-temperature and high-pressure steam. Both the outer and inner steam cylinders have through holes at the bottom to drain condensate after sterilization. A drain pipe is installed at the bottom of the outer wall of the outer steam cylinder, and a valve is installed on the drain pipe to control the outflow of liquid.

[0023] Multiple mounting holes are provided on the side wall of the steam inner cylinder. Each mounting hole is rotatably connected to a baffle. The top of the baffle is rotatably connected to the top edge of the mounting hole by a pin, which plays a one-way guiding role. When water vapor is generated in the jacket and the pressure inside the jacket is greater than the pressure inside the steam inner cylinder, the pressure difference of the steam pushes the baffle to deflect and open inward to allow steam to enter the steam inner cylinder.

[0024] A placement mechanism is located at the center of the inner steam cylinder for placing Chinese medicinal herbs to be sterilized. The placement mechanism includes a placement cylinder, the outer wall of which is supported by multiple fixed plates welded to the inner wall of the inner steam cylinder. Multiple air holes are opened at the top and bottom of the placement cylinder to ensure that the heat in the steam penetrates the layer of medicinal herbs. For easy handling of medicinal herbs, a door panel is installed at the opening on the side wall of the outer steam cylinder, and a door panel is installed at the corresponding opening on the inner steam cylinder. A sealed connecting sleeve is fixedly connected between the outer steam cylinder and the inner steam cylinder where door panel one is located, forming a material handling channel that runs through the jacket. A double-walled structure is adopted (there is a "jacket" between the inner liner and the outer shell). Before the sterilization steam is introduced into the inner cavity, steam is first introduced into the jacket for heating, so that the inner wall temperature is consistent with the sterilization temperature. There is no "cold bridge" effect of alternating hot and cold, and the steam is not easy to liquefy when it comes into contact with the inner wall. Example

[0025] Please see Figure 1-11Based on the above embodiment one, an anti-condensation mechanism and a limiting component are provided on the upper part of the steam inner cylinder. The anti-condensation mechanism includes a fixing ring fixedly connected to the upper part of the inner wall of the steam inner cylinder. Multiple mounting grooves are opened on the fixing ring along the circumferential direction. An arc-shaped plate is rotatably connected to the inner wall of each mounting groove through a pin. Multiple arc-shaped plates converge upward to form an umbrella-shaped water-blocking structure. The edge curvature of the arc-shaped plate is adapted to the inner wall of the steam inner cylinder. Multiple springs are connected between each arc-shaped plate and the inner wall of the steam inner cylinder. The springs provide upward support force to push the arc-shaped plate to maintain a horizontal reset state.

[0026] To ensure that the steam entering the inner steam cylinder penetrates the medicinal materials evenly, a baffle fan is installed above the placement cylinder. A vertical rotating shaft is fixed through the center of the baffle fan blades. A transmission box is installed inside the inner steam cylinder via a bracket. One end of the transmission box extends outward through the inner and outer steam cylinders. A motor is installed on the outer wall of the outer steam cylinder. The output end of the motor is connected to the extended end of the transmission box. A transmission rod is installed at the other end of the transmission box. The outer wall of the transmission rod is inserted upward into a groove at the bottom of the rotating shaft. A coil spring is fitted on the outer wall of the transmission rod. The two ends of the coil spring are fixedly connected to the transmission rod and the rotating shaft, respectively. When the motor starts, it drives the transmission rod to rotate through the transmission box. The transmission rod transmits power to the rotating shaft through the torque of the coil spring, driving the baffle fan to rotate.

[0027] Working principle: During the sterilization process, the rising steam condenses into condensate on the arc plate. When the weight of the condensate attached to the arc plate overcomes the supporting elastic force of the spring, the arc plate tilts downward around the pin shaft at the edge. The tilted arc plate guides the condensate to the inner wall of the steam cylinder, allowing the condensate to slide down the inner wall of the steam cylinder to the bottom through hole for discharge, preventing the condensate from dripping onto the Chinese medicinal materials. The critical state for the downward deflection of the curved plate must satisfy the following moment balance equation:

[0028] In the formula: The mass of condensate collected on a single curved plate; It is the acceleration due to gravity; This is the horizontal distance from the center of gravity of the condensate water to the pin shaft. Let be the spring constant of spring one; Let be the compression deformation of spring one; The horizontal distance from the point of application of the spring to the pin. This is the frictional resistance torque at the pin.

[0029] To prevent the condensate from splashing onto the medicinal materials during operation, an exhaust pipe is fixedly installed at the center of the top of the steam cylinder. A cross-shaped fixed sleeve is fixedly connected inside the exhaust pipe. A movable rod is vertically slidably connected to the inner wall of the cross-shaped fixed sleeve. A circular plate is fixedly connected to the bottom of the movable rod, and multiple limiting rods are fixedly connected downwards to the bottom of the circular plate. A plum blossom ring is fixedly fitted at the top extension of the rotating shaft, with multiple notches on its edge. A cross-shaped movable sleeve is fixedly fitted on the upper part of the outer wall of the movable rod. A movable ring is movably fitted on the outer wall of the exhaust pipe, and multiple sliding holes are opened vertically on the outer wall of the exhaust pipe. The outer end of the cross-shaped movable sleeve movably passes through the sliding holes and is fixedly connected to the movable ring. A spring three is fitted between the cross-shaped fixed sleeve and the cross-shaped movable sleeve on the outer wall of the movable rod, providing upward elastic force.

[0030] When the curved plate deflects downwards, its inner edge presses down on the lower movable ring. The movable ring, under pressure, overcomes the spring force and moves downwards, causing the movable rod, circular plate, and limit rod to move downwards synchronously via the cross-shaped movable sleeve. The limit rod inserts into the notch of the plum blossom ring, restricting the rotation of the shaft. Once the shaft is locked, the spoiler fan stops rotating, while the motor and transmission rod continue to rotate. The power of the transmission rod is converted into torsional energy storage on the coil spring, preventing motor overload.

[0031] When the shaft is locked and the coil spring continues to store energy, the shear strength of the limiting rod must satisfy the following mechanical equation:

[0032] In the formula: The allowable shear stress of the limiting rod material; The cross-sectional area of ​​a single limiting rod; The number of limit rods that are simultaneously inserted into the notch and subjected to force; The radius of the circle containing the limiting rod; This is the maximum torque output by the coil spring under maximum energy storage conditions.

[0033] After the condensate on the curved plate is drained, spring one pushes the curved plate upward to reset, the movable ring loses downward pressure, spring three pushes the movable rod upward, the limit rod disengages from the plum blossom ring, the rotating shaft is unlocked, the coil spring releases the stored torque, and drives the turbulence fan to rotate, thus turbulent the steam. Example

[0034] Please see Figure 1-11Based on the above embodiments one and two, the placement mechanism is provided with a blocking mechanism. The blocking mechanism includes two ventilated plates respectively disposed at the top and bottom of the placement cylinder. Multiple T-shaped rods are fixedly connected to the top and bottom of the placement cylinder at equal intervals around the circumference. The edges of the ventilated plates are perforated and slidably sleeved on the outer walls of the T-shaped rods. Multiple springs are sleeved on the outer walls of the T-shaped rods on the outside of the ventilated plates. In the natural state, the springs provide an inward pushing force, pushing the upper and lower ventilated plates to adhere tightly to the upper and lower end faces of the placement cylinder respectively.

[0035] In practical use, a hydrophobic and breathable membrane is laid between the upper and lower perforated ends of the placement cylinder and the breathable plate. Spring two presses the breathable plate firmly, fixing the hydrophobic and breathable membrane to both ends of the placement cylinder. The hydrophobic and breathable membrane allows water vapor to pass through while preventing water vapor or water droplets from seeping in. Condensate dripping is intercepted by the breathable plate and the hydrophobic and breathable membrane, keeping the medicinal herbs dry.

[0036] A return pipe is fixedly installed at the top of the exhaust pipe, and the other end of the return pipe extends downward and is fixedly connected through the outer wall of the steam outer cylinder to the jacket at the bottom of the steam outer cylinder. Excess steam above the inner steam cylinder is guided into the jacket of the steam outer cylinder through the exhaust pipe and the return pipe for secondary heating, maintaining the pressure balance inside the steam outer cylinder and reducing energy consumption.

[0037] This invention provides a sterilization device for traditional Chinese medicine decoction pieces. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A sterilization device for traditional Chinese medicine decoction pieces, comprising an outer steam cylinder (1) with an external cylindrical dome structure, characterized in that, Also includes: The inner steam cylinder (6) is coaxially disposed inside the outer steam cylinder (1), and a jacket space is formed between the outer steam cylinder (1) and the inner steam cylinder (6). Both the outer steam cylinder (1) and the inner steam cylinder (6) have through holes at their bottoms. Multiple supports (11) are fixedly connected between the bottom of the inner steam cylinder (6) and the inner wall of the outer steam cylinder (1); a heating plate (10) is installed at the bottom of the inner wall of the outer steam cylinder (1); Multiple mounting holes (12) are provided on the side wall of the steam inner cylinder (6); A baffle (13) is rotatably connected in each of the mounting holes (12). The top of the baffle (13) is rotatably connected to the top edge of the mounting hole (12) by a pin. When the internal pressure of the jacket between the outer steam cylinder (1) and the inner steam cylinder (6) is greater than the internal pressure of the inner steam cylinder (6), the baffle (13) is deflected and opened to the inside of the inner steam cylinder (6) by the pressure difference. The placement mechanism (7) is located at the center of the steam inner cylinder (6). The placement mechanism (7) includes a placement cylinder (71). The outer wall of the placement cylinder (71) is fixed to the inner wall of the steam inner cylinder (6) by multiple fixing plates (72).

2. The sterilization device for traditional Chinese medicine decoction pieces according to claim 1, characterized in that: The outer wall bottom of the steam cylinder (1) is fixedly connected with a support leg (3); A drain pipe is installed at the bottom of the outer wall of the steam outer cylinder (1), and a valve is installed on the drain pipe; A door panel 1 (4) is installed at the opening on the side wall of the outer steam cylinder (1), and a door panel 2 (73) is installed at the corresponding opening of the inner steam cylinder (6). A sealed connecting sleeve (5) is fixedly connected between the outer steam cylinder (1) where the door panel 1 (4) is located and the inner steam cylinder (6).

3. The sterilization device for prepared Chinese medicinal materials according to claim 2, characterized in that: An anti-condensation mechanism (8) is provided above the interior of the steam inner cylinder (6). The anti-condensation mechanism (8) includes a fixing ring (81) fixedly connected to the upper part of the inner wall of the steam inner cylinder (6). Multiple mounting grooves are provided on the fixing ring (81) along the circumferential direction. Multiple arc-shaped plates (82) are rotatably connected to the inner wall of each of the mounting slots via pins; Multiple springs (83) are connected between each of the arc-shaped plates (82) and the inner wall of the steam cylinder (6), and the springs (83) push the arc-shaped plates (82) to maintain a horizontal reset state.

4. The sterilization device for prepared Chinese medicinal materials according to claim 3, characterized in that: A baffle fan (84) is provided above the placement cylinder (71), and a vertical rotating shaft (85) is fixed through the center of the fan blades of the baffle fan (84). The transmission box (86) is installed inside the steam inner cylinder (6) by a bracket, and one end of the transmission box (86) is fixedly extended outward through the steam inner cylinder (6) and the steam outer cylinder (1); A motor (87) is installed on the outer wall of the steam cylinder (1), and the output end of the motor (87) is connected to the extension end of the transmission box (86). A transmission rod (88) is installed at the other end of the transmission box (86), with the outer wall of the transmission rod (88) inserted upward into the groove at the bottom of the rotating shaft (85); A coil spring (89) is sleeved on the outer wall of the transmission rod (88), and the two ends of the coil spring (89) are fixedly connected to the transmission rod (88) and the rotating shaft (85) respectively.

5. The sterilization device for traditional Chinese medicine decoction pieces according to claim 4, characterized in that: A limiting component (810) is also provided above the interior of the steam inner cylinder (6), and an exhaust pipe (14) is fixedly passed through the top center of the steam inner cylinder (6). A cross-shaped fixing sleeve (8102) is fixedly connected inside the exhaust pipe (14), and a movable rod (8103) is vertically slidably connected to the inner wall of the cross-shaped fixing sleeve (8102). A circular plate (8106) is fixedly connected to the bottom of the movable rod (8103); Multiple limiting rods (8107) are fixedly connected downward to the bottom of the circular plate (8106); A plum blossom ring (8108) is fixedly sleeved on the top extension end of the rotating shaft (85), and the edge of the plum blossom ring (8108) has multiple notches; A cross-shaped movable sleeve (8105) is fixedly sleeved on the upper part of the outer wall of the movable rod (8103); a movable ring (8101) is movably sleeved on the outer wall of the exhaust pipe (14); Spring 3 (8104) is sleeved on the outer wall of the movable rod (8103) and located between the cross fixed sleeve (8102) and the cross movable sleeve (8105).

6. The sterilization device for traditional Chinese medicine decoction pieces according to claim 5, characterized in that: The outer wall of the exhaust pipe (14) is provided with a plurality of sliding holes in the vertical direction, and the outer end of the cross movable sleeve (8105) movably passes through the sliding holes and is fixedly connected to the movable ring (8101). The inner edge of the arc plate (82) is located above the movable ring (8101). When the gravity of the condensate forces the arc plate (82) to deflect downward, the inner edge of the arc plate (82) presses down on the movable ring (8101), causing the limiting rod (8107) to move down and insert into the notch of the plum blossom ring (8108) to restrict the rotation of the shaft (85). The ultimate output torque of the coil spring (89) when it is in the maximum torsional energy storage state is less than the overall shear yield torque of the limit rod (8107).

7. The sterilization device for traditional Chinese medicine decoction pieces according to claim 1, characterized in that: The placement mechanism (7) is provided with a blocking mechanism (9) to prevent liquid water from seeping in. The blocking mechanism (9) includes two breathable plates (91) respectively disposed at the top and bottom of the placement cylinder (71). Multiple T-shaped rods (92) are fixedly connected to the top and bottom of the placement cylinder (71) at equal intervals around the circumference, and the edge of the vent plate (91) is perforated and slidably sleeved on the outer wall of the T-shaped rods (92); Multiple springs (93) are sleeved on the outer wall of the T-shaped rod (92) and located outside the ventilated plate (91). The springs (93) use their own elasticity to push the upper and lower ventilated plates (91) to press against the upper and lower end faces of the placement cylinder (71).

8. The sterilization device for traditional Chinese medicine decoction pieces according to claim 5, characterized in that: A return pipe (2) is fixedly installed on the top of the exhaust pipe (14). The other end of the return pipe (2) extends downward and is fixedly connected through the outer wall of the steam outer cylinder (1) to the inner jacket space at the bottom of the steam outer cylinder (1).

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