Extraction method and decoction device of heat-clearing and detoxifying Chinese medicine composition

Abstract

The invention discloses a decocting device for a heat-clearing and detoxifying Chinese medicine composition, comprising a decocting cylinder, a hollow connecting column being vertically arranged at the bottom inner side of the decocting cylinder, a pressure cap being threadedly connected to the cylinder mouth of the decocting cylinder at the top thereof, a pressure relief structure and a sealing and pressurizing structure being arranged inside the pressure cap, and a plurality of pressure holes being arranged on the circumference of the hollow connecting column; the pressure relief structure is communicated with the interior of the decocting cylinder when the internal pressure of the decocting cylinder reaches a preset value, and the sealing and pressurizing structure is used to seal the connection between the pressure relief structure and the outside of the decocting cylinder at the same time interval, and compress the gas inside the pressure relief structure and release it into the decocting cylinder through the pressure holes on the hollow connecting column; the invention uses the sealing and pressurizing structure to regularly seal the pressure relief structure and compress the gas, so that the gas discharged from the decocting cylinder through the pressure relief structure returns to the decocting cylinder again through the hollow connecting column to produce a stirring effect on the internal medicine and the medicinal liquid, so that the medicine is mixed evenly.

Description

Technical Field

[0001] The invention relates to the technical field of Chinese medicine decoction, and in particular to an extraction method and a decoction device for a heat-clearing and detoxifying Chinese medicine composition. Background Art

[0002] Traditional Chinese medicine is a drug that is collected, processed, and prepared under the guidance of traditional Chinese medical theory, and its mechanism of action and clinical application are explained. That is, it is a substance used to prevent, treat and diagnose diseases and has rehabilitation and health-care effects. There are many types of traditional Chinese medicine, and the traditional Chinese medicine compositions prepared by combining different traditional Chinese medicines have different effects, such as clearing away heat and detoxifying, cooling blood and calming the fetus.

[0003] Traditional Chinese medicine compositions with cooling and antipyretic effects are generally extracted from a combination of traditional Chinese medicines with similar effects, such as honeysuckle and isatis root. When preparing the traditional Chinese medicine compositions, they are generally prepared through processes such as grinding and decoction. During the decoction process, the medicines are generally stationary, but this will lead to uneven mixing between the medicines, and the efficacy cannot be optimized. In addition, the medicines are prone to sticking when in direct contact with the inner wall of the decoction container during decoction, resulting in reduced efficacy and affecting the normal use of the decoction solution.

[0004] In the prior art, a stirring mechanism is generally provided on the cover of the decoction container to stir the decocted medicine, so as to avoid the problem of stickiness caused by long-term contact between the medicine and the decoction container and to ensure that the medicines are evenly mixed to obtain the maximum efficacy. However, by providing a stirring mechanism on the cover of the decoction container and inserting it into the decoction container, not only the internal space of the stirring container is reduced, but also when the cover is removed, the stirring mechanism will bring out a large amount of liquid medicine and medicine residue, resulting in waste, and causing pollution to the surrounding environment. Summary of the Invention

[0005] The purpose of the present invention is to provide an extraction method and a decoction device for a heat-clearing and detoxifying Chinese medicine composition, which solves the problem that the existing decoction container, due to the provision of a stirring mechanism on the cover, brings out a large amount of medicinal liquid and medicinal residue when the cover is removed, causing waste and polluting the surrounding environment.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A method for extracting a heat-clearing and detoxifying Chinese medicine composition comprises the steps of:

[0008] S100, grinding the forsythia suspensa, scutellaria baicalensis and orientale to obtain a mixed medicinal powder for later use;

[0009] S200, adding honeysuckle, isatis root, dandelion and bitter herb to a decoction cylinder, sealing the decoction cylinder with a pressure cap, then adding water and decocting for 1-2 hours, and sealing the pressure structure and the pressure relief structure at regular intervals during the decoction process, and releasing the compressed internal gas into the decoction cylinder to stir the medicinal materials to obtain a mixed medicinal liquid;

[0010] S300, adding the mixed medicinal liquid to the mixed medicinal powder, mixing, and drying to obtain a Chinese medicine composition.

[0011] As a preferred solution of the present invention, in step S200, the path for releasing the compressed internal gas is the pressure hole on the hollow connecting column.

[0012] In order to solve the above technical problems, the present invention further provides the following technical solutions:

[0013] A decoction device for extracting a heat-clearing and detoxifying Chinese medicine composition, comprising a decoction cylinder, a hollow connecting column vertically disposed at the inner bottom of the decoction cylinder, a pressure cap threadedly connected to the top of the hollow connecting column and sealed to the cylinder mouth of the decoction cylinder, a pressure relief structure in communication with the hollow connecting column and a sealed pressurizing structure disposed within the pressure cap, and a plurality of pressure holes disposed on the circumference of the hollow connecting column;

[0014] Wherein, the pressure relief structure is connected to the interior of the decoction cylinder when the internal pressure of the decoction cylinder reaches a preset value, and the sealing and pressurizing structure is used to seal the connection between the pressure relief structure and the outside of the decoction cylinder at the same interval, and compress the gas inside the pressure relief structure and release it into the decoction cylinder through the pressure hole on the hollow connecting column.

[0015] As a preferred embodiment of the present invention, the hollow connecting column comprises a hollow cylinder vertically arranged on the inner bottom of the cooking cylinder, the top of the hollow cylinder is provided with a threaded connection portion, and a plurality of side hollow plates are evenly arranged around the axis around the bottom of the hollow cylinder and fixed to the inner bottom of the cooking cylinder, and the pressure cover is provided with a threaded hole threadedly connected to the threaded connection portion;

[0016] Wherein, the side hollow plates are communicated with the interior of the hollow cylinder, and the plurality of pressure holes are respectively arranged on the surfaces of the plurality of side hollow plates.

[0017] As a preferred solution of the present invention, the side hollow plate is a semi-cylinder, and the semi-circular surface of the side hollow plate does not contact the inner bottom of the boiling cylinder, and the pressure hole is provided on the semi-circular surface of the side hollow plate.

[0018] As a preferred solution of the present invention, a filter is provided at the connection point between the pressure hole and the outer surface of the side hollow plate.

[0019] As a preferred embodiment of the present invention, the pressure relief structure includes a cavity provided inside the pressure cover, a connecting hole communicating with the threaded hole and an air inlet communicating with the interior of the cooking cylinder provided on a side wall of the cavity near the cooking cylinder, an extension pipe for being inserted from the top end of the hollow cylinder into the interior and slidingly sealed therein connected to the end of the connecting hole, and a one-way valve is connected to both the extension pipe and the air inlet, and a plurality of side walls in the cavity parallel to the vertical plane are provided with pressure relief grooves extending upward to the exterior of the pressure cover in the vertical direction;

[0020] Wherein, the distance between the pressure relief groove and the side wall provided with the air inlet hole is greater than zero, and the sealing and pressurizing structure is used to seal or open multiple pressure relief grooves at the same time.

[0021] As a preferred solution of the present invention, the cavity and the pressure relief groove are both inclined planes on one side close to the boiling cylinder, and a drainage groove connected to the peripheral surface of the pressure cover is provided at the lowest point of the inclined plane in the cavity, and the connection between the drainage groove and the outer surface of the pressure cover is connected to a solenoid valve, and the connection between the inclined plane in the pressure relief groove and the inner wall of the cavity is the lowest point in horizontal height.

[0022] As a preferred embodiment of the present invention, the sealing and pressurizing structure includes a lifting device arranged inside the cavity and lifted and lowered in the vertical direction, and a pressure plate is provided at the end of the lifting device which is slidingly and sealingly connected to the inner wall of the cavity, and the lifting device is arranged on the side of the cavity away from the decoction cylinder, and the sum of the shortest length of the lifting device and the thickness of the pressure plate is less than the distance between the inclined plane in the pressure relief groove and the side of the cavity away from the decoction cylinder.

[0023] As a preferred solution of the present invention, a side of the pressure plate close to the cooking cylinder matches a side of the cavity close to the cooking cylinder.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention timely seals the pressure relief structure and compresses the gas through the sealing pressurization structure, so that the gas discharged from the decoction cylinder through the pressure relief structure returns to the decoction cylinder through the hollow connecting column to produce a stirring effect on the internal medicine and liquid medicine, thereby preventing the medicine from being sticky due to long-term contact with the inner wall of the decoction cylinder and making the medicine mixed evenly. In addition, there is no structure on both sides of the pressure cover extending into the interior of the decoction cylinder, so that when it is removed, the liquid medicine and medicine residue in the decoction cylinder will not be brought out, thereby avoiding pollution to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0027] Figure 1 A schematic structural diagram of a decoction device for a method of extracting a heat-clearing and detoxifying Chinese medicine composition according to an embodiment of the present invention;

[0028] Figure 2 A schematic side cross-sectional view of the interior of a pressure cover is provided for an embodiment of the present invention;

[0029] Figure 3 A structural schematic diagram of a hollow connecting column is provided for an embodiment of the present invention.

[0030] The numbers in the figure represent the following:

[0031] 1-decoction cylinder; 2-hollow connecting column; 3-pressure cover; 4-pressure relief structure; 5-sealed pressurization structure; 6-pressure hole;

[0032] 201-hollow cylinder; 202-threaded connection; 203-side hollow plate; 204-threaded hole; 205-filter;

[0033] 401-cavity; 402-connection hole; 403-air inlet; 404-extension pipe; 405-pressure relief groove; 406-drainage groove;

[0034] 501-lifting device; 502-pressure plate. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1:

[0037] The present invention provides a method for extracting a heat-clearing and detoxifying Chinese medicine composition, comprising the steps of:

[0038] S100, grinding the forsythia suspensa, scutellaria baicalensis and orientale to obtain a mixed medicinal powder for later use;

[0039] S200, adding honeysuckle, isatis root, dandelion and bitter herb to a decoction cylinder, sealing the decoction cylinder with a pressure cap, then adding water and decocting for 1-2 hours, and sealing the pressure structure and the pressure relief structure at regular intervals during the decoction process, and releasing the compressed internal gas into the decoction cylinder to stir the medicinal materials to obtain a mixed medicinal liquid;

[0040] S300, adding the mixed medicinal liquid to the mixed medicinal powder, mixing, and drying to obtain a Chinese medicine composition.

[0041] In the step S200, the path for releasing the compressed internal gas is the pressure hole on the hollow connecting column.

[0042] Example 2:

[0043] like Figures 1 to 3 As shown, the present invention also provides a decoction device for extracting a heat-clearing and detoxifying Chinese medicine composition, comprising a decoction cylinder 1, a hollow connecting column 2 being vertically provided at the inner bottom of the decoction cylinder 1, a pressure cap 3 being threadedly connected to the top of the hollow connecting column 2 and being sealed with the cylinder mouth of the decoction cylinder 1, a pressure relief structure 4 communicating with the hollow connecting column 2, and a sealing pressurizing structure 5 being provided inside the pressure cap 3, and a plurality of pressure holes 6 being provided on the circumference of the hollow connecting column 2;

[0044] Among them, the pressure relief structure 4 is connected to the inside of the decoction cylinder 1 when the internal pressure of the decoction cylinder 1 reaches a preset value, and the sealing pressurization structure 5 is used to seal the connection between the pressure relief structure 4 and the outside of the decoction cylinder 1 at the same interval, and compress the gas inside the pressure relief structure 4 and release it into the decoction cylinder 1 through the pressure hole 6 on the hollow connecting column 2.

[0045] When the present invention is used, Chinese medicines such as honeysuckle are mixed and placed in the decoction cylinder 1, and then the pressure cover 3 is threadedly connected to the hollow connecting column 2 so that the pressure cover 3 is sealed to the cylinder mouth of the decoction cylinder 1, and the decoction cylinder 1 is heated to decoct the Chinese medicine inside.

[0046] The water vapor generated during the boiling process is discharged to the outside through the pressure relief structure 4, so as to avoid the danger caused by excessive pressure inside the boiling cylinder 1.

[0047] At the same time intervals, the sealing pressurizing structure 5 seals the connection between the pressure relief structure 4 and the outside, and then pressurizes the gas inside the pressure relief structure 4, so that the gas is released into the inside of the decoction tube 1 through the pressure hole 6 on the hollow connecting column 2 under the action of pressure, thereby stirring the Chinese medicine and medicinal liquid decocted in the decoction tube 1, avoiding the problem of Chinese medicine sticking due to long-term contact with the inner wall of the decoction tube 1. Secondly, the decocted Chinese medicine is evenly mixed and has better medicinal effect.

[0048] In addition, the two sides of the pressure cover 3 of the present invention are flat, which avoids the problem of dragging out a lot of drug liquid and drug residue when removing the pressure cover 3, resulting in drug waste, and avoids the problem of causing pollution to the surrounding environment.

[0049] The reverse effect of the water vapor generated during decoction is used to stir the medicine and the liquid medicine, thus avoiding the problem of drug contamination caused by the introduction of external gas.

[0050] Furthermore, the pressure hole 6 opens when subjected to the internal gas pressure of the hollow connecting column 2, and opens from the inside of the middle connecting column 2 to the outside, preventing the medicinal liquid inside the decoction tube 1 from entering the hollow connecting column 2 and affecting the stirring of the medicine and the medicinal liquid.

[0051] The hollow connecting column 2 includes a hollow cylinder 201 vertically arranged on the inner bottom of the boiling cylinder 1. A threaded connection portion 202 is provided on the top of the hollow cylinder 201. A plurality of side hollow plates 203 are evenly arranged around the axis around the bottom of the hollow cylinder 201 and are fixed to the inner bottom of the boiling cylinder 1. The pressure cover 3 is provided with a threaded hole 204 threadedly connected to the threaded connection portion 202.

[0052] The side hollow plates 203 are connected to the interior of the hollow cylinder 201 , and a plurality of pressure holes 6 are respectively provided on the surfaces of the plurality of side hollow plates 203 .

[0053] When the hollow connecting column 2 is in use, the pressure cover 3 is threadedly connected to the threaded connection portion 202 through the threaded hole 204 to seal the boiling cylinder 1.

[0054] The side hollow plate 203 is connected to the interior of the hollow body 201 and is evenly distributed around the circumference of the hollow body 201, so that the gas released into the medicinal liquid inside the decoction cylinder 1 through the pressure hole 201 under the action of the sealing pressurization structure 5 is evenly distributed inside the medicinal liquid, thereby improving the uniformity of mixing the medicine and the medicinal liquid, and providing a larger stirring coverage area inside the decoction cylinder 1, reducing the amount of medicine that is not stirred by the gas.

[0055] Secondly, the side hollow plate 203 is arranged at the inner bottom of the decoction cylinder 1, so that the gas for stirring the medicine and the medicinal liquid surges from the lowest point in the decoction cylinder 1, thereby improving the effect of mixing and stirring the medicine and the medicinal liquid.

[0056] The side hollow plate 203 is a semi-cylinder, and the semi-circular surface of the side hollow plate 203 does not contact the inner bottom of the boiling tube 1 . The pressure hole 6 is provided on the semi-circular surface of the side hollow plate 203 .

[0057] The semicircular side hollow plate 203 not only reduces the probability of the drug accumulating on the surface and clogging the pressure hole 6, but also allows the pressure hole 6 to be set in more directions. The airflow released by the pressure hole 6 can radiate a larger angle range, further reducing the dead angle of stirring the mixture of the drug and the liquid medicine, and improving the stirring effect.

[0058] A filter screen 205 is provided at the connection point between the pressure hole 6 and the outer surface of the side hollow plate 203 .

[0059] The filter 205 is provided to prevent drug residues from clogging the pressure hole 6 .

[0060] The pressure relief structure 4 includes a cavity 401 disposed within the pressure cover 3. A connecting hole 402 communicating with the threaded hole 204 and an air inlet 403 communicating with the interior of the cooking cylinder 1 are provided on the side wall of the cavity 401 near the cooking cylinder 1. An extension pipe 404 is connected to the end of the connecting hole 402, which is inserted from the top of the hollow cylinder 201 into the interior and slidably and sealed therewith. Both the extension pipe 404 and the air inlet 403 are connected to a one-way valve. Multiple side walls parallel to the vertical plane within the cavity 401 are vertically provided with pressure relief grooves 405 extending upward to the exterior of the pressure cover 3.

[0061] The distance between the pressure relief groove 405 and the side wall provided with the air inlet 403 is greater than zero, and the sealing and pressurizing structure 5 is used to seal or open multiple pressure relief grooves 405 at the same time.

[0062] When the pressure relief structure 4 is in use, the water vapor generated by boiling in the boiling cylinder 1 enters the cavity 401 through the one-way valve and the air inlet 403, and is discharged to the outside of the boiling cylinder 1 through the pressure relief groove 405, avoiding the problem of excessive air pressure inside the boiling cylinder 1 causing danger.

[0063] When the sealing and pressurizing structure 5 seals the pressure relief groove 405, the gas in the cavity 401 is squeezed by the sealing and pressurizing structure 5 and enters the interior of the hollow body 201 through the connecting hole 402, the extension pipe 404 and the one-way valve, and then is released into the interior of the decoction cylinder 1 through the pressure hole 6 on the side hollow plate 203 to stir the medicine and the liquid medicine, thereby avoiding the problem of the Chinese medicine becoming sticky due to long-term contact with the inner wall of the decoction cylinder 1 and ensuring uniform mixing of the medicine.

[0064] When the pressure cover 3 is threadedly connected to the threaded connection part 202, the top of the hollow cylinder 201 rotates into the threaded hole 204. When the hollow cylinder 201 enters to a certain depth, the extension pipe 404 is inserted from the top of the hollow cylinder 201 to the interior of the hollow cylinder 201, and is slidingly sealed and connected to the inner wall of the hollow cylinder 201, ensuring the airtightness of the gas in the cavity 401 when passing through the hollow cylinder 201, avoiding the problem of gas leakage resulting in a small amount of gas released at the pressure hole 6, thereby causing no stirring effect on the medicine and the medicine liquid.

[0065] The inside of the cavity 401 and the side of the pressure relief groove 405 close to the boiling tube 1 are both inclined planes, and a drainage groove 406 connected to the side surface of the pressure cover 3 is provided at the lowest point of the inclined plane in the cavity 401. The connection between the drainage groove 406 and the outer surface of the pressure cover 3 is connected to a solenoid valve. The connection between the inclined plane in the pressure relief groove 405 and the inner wall of the cavity 401 is the lowest point in horizontal height.

[0066] Since the gas discharged from the decoction cylinder 1 contains a large amount of water vapor, it will condense on the inner wall of the cavity 401 and the inner wall of the pressure relief groove 405 during the discharge process, causing water to gradually accumulate inside the cavity 401. When the sealing and pressurizing structure 5 seals the cavity 401 and pressurizes it, the accumulated water moves to the side hollow plate 203 and accumulates. When the accumulated water in the side hollow plate 203 overflows, it enters the decoction cylinder 1, causing it to mix with the accumulated water when different Chinese medicines are decocted. Since the accumulated water is accumulated when other Chinese medicines are decocted, the efficacy of the medicine is reduced and may even cause harm to the human body.

[0067] By setting the inner bottom of the cavity 401 and the bottom of the pressure relief groove 405 into an inclined plane, the condensed water droplets are gathered to the drainage groove 406 at the lowest point in the cavity 401 under the action of gravity and discharged to the outside of the pressure cover 3, thereby avoiding the problem of water accumulation in the cavity 401 and affecting the subsequent decoction of Chinese medicine.

[0068] The solenoid valve closes the drain groove 406 when the sealing and pressurizing structure 5 is working, and opens the drain groove 406 after the sealing and pressurizing structure 5 finishes working, ensuring that the sealing and pressurizing structure 5 can release the pressurized gas into the boiling tube 1.

[0069] The sealing and pressurizing structure 5 includes a lifting device 501 arranged inside the cavity 401 and lifted and lowered in the vertical direction. A pressure plate 502 is provided at the end of the lifting device 501 and is slidingly and sealingly connected to the inner side wall of the cavity 401. The lifting device 501 is arranged on the side of the cavity 401 away from the boiling cylinder 1. The sum of the shortest length of the lifting device 501 and the thickness of the pressure plate 502 is less than the distance between the inclined plane in the pressure relief groove 405 and the side of the cavity 401 away from the boiling cylinder 1.

[0070] When the sealing and pressurizing structure 5 is in use, the pressurizing plate 502 is driven to move in the vertical direction by the lifting device 501. When the lifting device 501 moves upward to the highest point, the pressurizing plate 502 is at the highest point. At this time, one side of the pressure relief groove 405 is located in the space between the pressurizing plate 502 and the side of the cavity 401 close to the boiling cylinder 1, so that the water vapor discharged from the boiling cylinder 1 is discharged to the outside of the boiling cylinder 1 through the cavity 401 and the pressure relief groove 405, avoiding the problem of excessive air pressure inside the boiling cylinder 1 causing danger.

[0071] When the lifting device 501 drives the pressure plate 502 to move downward to the inner bottom of the cavity 401, the pressure plate 502 is slidably and sealedly connected to the inner wall of the cavity 401, and the pressure relief groove 405 is closed after the pressure plate 502 moves a certain distance, so that the inner wall of the cavity 401 is sealed. The pressure plate 502 can squeeze the gas through the hollow cylinder 201 and the side hollow plate 203 to release the gas into the decoction tube 1 to stir the medicine and the liquid medicine, avoiding the problem of the medicine becoming sticky due to long-term contact with the inner wall of the decoction tube 1, and making the medicine mixed evenly, thereby improving the efficacy.

[0072] The side of the pressure plate 502 close to the boiling cylinder 1 matches the side of the cavity 401 close to the boiling cylinder 1 .

[0073] The setting of the conical surface allows the water droplets condensed on the bottom of the pressure plate 502 to drip under the action of gravity, avoiding a large number of water droplets adhering to the surface of the pressure plate 502. Secondly, the pressure plate 502 matches the inner wall of the cavity 501, allowing the pressure plate 502 to move to the maximum distance to increase the amount of gas released inside the boiling tube 1, thereby improving the stirring effect.

[0074] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A decoction device for a heat-clearing and detoxifying Chinese medicine composition, characterized in that: The invention comprises a decoction cylinder (1), wherein a hollow connecting column (2) is vertically arranged at the inner bottom of the decoction cylinder (1), a pressure cover (3) which is sealed with the cylinder mouth of the decoction cylinder (1) and is threadedly connected to the top of the hollow connecting column (2), a pressure relief structure (4) which is in communication with the hollow connecting column (2) and a sealing pressurizing structure (5) are arranged inside the pressure cover (3), and a plurality of pressure holes (6) are arranged on the circumference of the hollow connecting column (2); The pressure relief structure (4) is connected to the interior of the decoction cylinder (1) when the internal pressure of the decoction cylinder (1) reaches a preset value, and the sealing and pressurizing structure (5) is used to seal the connection between the pressure relief structure (4) and the outside of the decoction cylinder (1) at the same time interval, and to compress the gas inside the pressure relief structure (4) and release it into the decoction cylinder (1) through the pressure hole (6) on the hollow connecting column (2); The hollow connecting column (2) comprises a hollow column (201) vertically arranged on the inner bottom of the boiling cylinder (1); a threaded connection portion (202) is provided on the top of the hollow column (201); a plurality of side hollow plates (203) are evenly arranged around the axis around the bottom of the hollow column (201) and are fixed to the inner bottom of the boiling cylinder (1); and a threaded hole (204) is provided on the pressure cover (3) and is threadedly connected to the threaded connection portion (202); The side hollow plates (203) are connected to the interior of the hollow cylinder (201), and the plurality of pressure holes (6) are respectively arranged on the surfaces of the plurality of side hollow plates (203); The side hollow plate (203) is a semi-cylinder, and the semi-circular surface of the side hollow plate (203) does not contact the inner bottom of the boiling cylinder (1), and the pressure hole (6) is provided on the semi-circular surface of the side hollow plate (203); A filter screen (205) is provided at the connection point between the pressure hole (6) and the outer surface of the side hollow plate (203); The pressure relief structure (4) comprises a cavity (401) arranged inside the pressure cover (3); a connecting hole (402) communicating with the threaded hole (204) and an air inlet (403) communicating with the interior of the pressure cover (1) are provided on a side wall of the cavity (401) close to the boiling cylinder (1); an end of the connecting hole (402) is connected to an extension pipe (404) for being inserted from the top end of the hollow cylinder (201) into the interior and slidingly sealed, and both the extension pipe (404) and the air inlet (403) are connected to a one-way valve; and a plurality of side walls in the cavity (401) parallel to the vertical plane are provided with pressure relief grooves (405) extending upward to the exterior of the pressure cover (3) in the vertical direction; wherein the distance between the pressure relief groove (405) and the side wall provided with the air inlet (403) is greater than zero, and the sealing and pressurizing structure (5) is used to simultaneously seal or open a plurality of the pressure relief grooves (405); The cavity (401) and the pressure relief groove (405) are both inclined planes on one side close to the boiling cylinder (1), and a drainage groove (406) communicating with the peripheral surface of the pressure cover (3) is provided at the lowest point of the inclined plane in the cavity (401), and the connection point between the drainage groove (406) and the outer surface of the pressure cover (3) is connected to a solenoid valve, and the connection point between the inclined plane in the pressure relief groove (405) and the inner wall of the cavity (401) is the lowest point in horizontal height; The sealing and pressurizing structure (5) comprises a lifting device (501) arranged inside the cavity (401) and lifting and lowering in a vertical direction, a pressure plate (502) slidably and sealedly connected to the inner wall of the cavity (401) is provided at the end of the lifting device (501), and the lifting device (501) is arranged on a side of the cavity (401) away from the boiling cylinder (1), and the sum of the shortest length of the lifting device (501) and the thickness of the pressure plate (502) is less than the distance between the inclined plane in the pressure relief groove (405) and the side of the cavity (401) away from the boiling cylinder (1); The side of the pressure plate (502) close to the boiling cylinder (1) matches the side of the cavity (401) close to the boiling cylinder (1).

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