Polymerase chain reaction (PCR) particle powder desorption device

Abstract

The utility model discloses a PCR (Polymerase Chain Reaction) particle powder desorption device which comprises a hopper, a desorption mechanism and a feeding mechanism, the hopper is used for accommodating a mixture of PCR particles and powder, the desorption mechanism is provided with a desorption cavity, a separation filter cartridge is arranged in the desorption cavity, filter holes are formed in the outer surface of the separation filter cartridge, and a first rotating shaft piece is arranged in the separation filter cartridge; the desorption mechanism comprises a first driver in driving connection with the first rotating shaft part, the feeding mechanism is connected with the hopper and the desorption mechanism, mixed materials in the hopper can be conveyed into the separation filter cylinder, and the first driver can drive the first rotating shaft part to rotate so that the first rotating shaft part can drive the mixed materials in the separation filter cylinder to rotate; and the PCR particles and powder in the mixed material can be filtered and separated through the filtering holes. And PCR particles and powder in a mixed material are separated by utilizing the centrifugal force of rotation and the filtering effect of the filtering holes, so that a relatively good separation and desorption effect is achieved, and the production quality of the PCR particles is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of particle production equipment, in particular to a PCR particle powder desorption device. Background Art

[0002] PCR pellets are plastic pellets made from post-consumer recycled material (PCR). These pellets are made by sorting, cleaning, and granulating recycled waste plastics through a recycling system. They are widely used in the electronics, automotive, construction, and medical fields. During the PCR pellet production process, due to friction between the PCR pellets, powder inevitably becomes mixed in. Especially during high-speed pelletization, the amount of powder mixed in the PCR pellets increases, affecting the quality of the resulting PCR pellets. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a PCR particle powder desorption device that utilizes the centrifugal force of rotation and the filtering effect of the filter holes to separate the PCR particles and powder in the mixed material, thereby improving the production quality of PCR particles.

[0004] According to the PCR particle powder desorption device described in an embodiment of the present utility model, it includes a hopper, a desorption mechanism and a feeding mechanism. The hopper is used to accommodate a mixture of PCR particles and powder. The desorption mechanism has a desorption chamber. A separation filter cartridge is provided in the desorption chamber. The surface of the separation filter cartridge is provided with filter holes. A first rotating shaft is provided inside the separation filter cartridge. The desorption mechanism includes a first driver driven by the first rotating shaft. The feeding mechanism connects the hopper and the desorption mechanism and can transport the mixture in the hopper to the inside of the separation filter cartridge. The first driver can drive the first rotating shaft to rotate so that the first rotating shaft drives the mixture inside the separation filter cartridge to rotate. The filter holes can filter and separate the PCR particles and powder in the mixed material.

[0005] According to the PCR particle powder desorption device described in the embodiment of the utility model, it has at least the following beneficial effects: when in use, the mixture of PCR particles and powder is placed in a hopper, and the feeding mechanism transports the mixture in the hopper to the inside of the separation filter cartridge of the desorption mechanism. The first driver drives the first rotating shaft to rotate, so that the first rotating shaft drives the mixture inside the separation filter cartridge to rotate, and the centrifugal force of the rotation is used to make the mixture move toward the filter holes on the wall of the separation filter cartridge. The filter holes filter and separate the PCR particles and powder in the mixture, so that the powder is thrown out from the filter holes to the desorption chamber, and the PCR particles remain in the separation filter cartridge, thereby separating the PCR particles and powder in the mixture, achieving a better separation and desorption effect, which is beneficial to improving the production quality of PCR particles.

[0006] According to some embodiments of the present invention, the desorption mechanism has a first discharge channel and a second discharge channel. The first discharge channel is connected to the interior of the separation filter cartridge and is used to output the PCR particles in the separation filter cartridge. The second discharge channel is connected to the desorption chamber and is used to output the powder in the desorption chamber.

[0007] According to some embodiments of the present invention, the desorption mechanism includes a casing assembly, the desorption chamber is arranged in the casing assembly, the separation filter cartridge is extended in the up and down directions and is fixedly connected to the casing assembly, the first rotating shaft is provided with a first spiral blade to define a spiral first channel between the first rotating shaft and the inner wall of the separation filter cartridge, the first discharge channel is arranged on the upper side of the separation filter cartridge and is connected to the first channel, and the second discharge channel is arranged on the lower side of the casing assembly.

[0008] According to some embodiments of the present invention, the bottom wall of the desorption chamber is inclined, and the second discharge channel is connected to the downwardly inclined side of the bottom wall of the desorption chamber.

[0009] According to some embodiments of the present invention, the desorption mechanism includes a collecting tank, which is arranged corresponding to the second discharge channel and is used to collect powder output from the second discharge channel.

[0010] According to some embodiments of the present invention, the feeding mechanism includes a conveying pipe and a conveying assembly, the conveying pipe is respectively connected to the hopper and the separation filter cartridge, the conveying pipe is provided with a first material port and a second material port, the first material port connects the interior of the hopper and the interior of the conveying pipe, the second material port connects the interior of the conveying pipe and the interior of the separation filter cartridge, and the conveying assembly is arranged corresponding to the conveying pipe, for conveying the mixed material entering from the first material port to the second material port.

[0011] According to some embodiments of the present invention, the conveying assembly includes a second rotating shaft and a second driver, the first material port is arranged at the side of the conveying pipe, the second material port is arranged at the end of the conveying pipe, the second rotating shaft is arranged in the conveying pipe and is provided with a second spiral blade to define a spiral second channel between the second and the inner wall of the conveying pipe, and the second driver is driven and connected to the second rotating shaft to drive the second rotating shaft to rotate.

[0012] According to some embodiments of the present invention, the first material port is located at the lower side of the hopper, and the lower side wall of the hopper is in an inverted cone-shaped structure.

[0013] According to some embodiments of the present invention, the PCR particle powder desorption device further includes an auxiliary mechanism, which is arranged corresponding to the hopper and can moisten the mixed material in the hopper.

[0014] According to some embodiments of the present invention, the auxiliary mechanism includes a water pump, a water pipe and a water outlet joint. The water pump is connected to the water outlet joint through the water pipe and can supply water to the water outlet joint. The water outlet joint is arranged corresponding to the hopper and can output water flow to the hopper.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic structural diagram of a PCR particle powder desorption device according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the simplified cross-section of the PCR particle powder desorption device.

[0019] Reference numerals:

[0020] Hopper 100; material chamber 101; desorption mechanism 200; desorption chamber 201; first discharge channel 202; second discharge channel 203; first channel 204; casing assembly 210; separation filter cartridge 220; first rotating shaft 230; first spiral blade 231; first driver 240; collecting tank 250; feeding mechanism 300; first material port 301; second material port 302; second channel 303; delivery pipe 310; second rotating shaft 320; second spiral blade 321; second driver 330; auxiliary mechanism 400; water pump 410; water pipe 420; water outlet connector 430. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0023] In the description of this utility model, if the words "several", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0024] If the first and second are described, they are only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Reference Figure 1 and Figure 2, a PCR particle powder desorption device, which includes a hopper 100, a desorption mechanism 200 and a feeding mechanism 300, the hopper 100 is used to accommodate a mixture of PCR particles and powder, the desorption mechanism 200 has a desorption chamber 201, a separation filter cartridge 220 is provided in the desorption chamber 201, the outer surface of the separation filter cartridge 220 is provided with a filter hole (not shown in the figure), and a first rotating shaft 230 is provided inside the separation filter cartridge 220, the desorption mechanism 200 includes a first driver 240 driven by the first rotating shaft 230, the feeding mechanism 300 connects the hopper 100 and the desorption mechanism 200, and can transport the mixed material in the hopper 100 to the inside of the separation filter cartridge 220, the first driver 240 can drive the first rotating shaft 230 to rotate, so that the first rotating shaft 230 drives the mixed material inside the separation filter cartridge 220 to rotate, and the filter hole can filter and separate the PCR particles and powder in the mixed material.

[0027] It is understandable that if Figure 1 and Figure 2 As shown, when in use, the mixture of PCR particles and powder is placed in the hopper 100, and the feeding mechanism 300 transports the mixture in the hopper 100 to the interior of the separation filter cartridge 220 of the desorption mechanism 200. The first driver 240 drives the first rotating shaft 230 to rotate, so that the first rotating shaft 230 drives the mixture inside the separation filter cartridge 220 to rotate, and utilizes the centrifugal force of rotation to make the mixture move toward the filter holes on the wall of the separation filter cartridge 220. The aperture of the filter holes is smaller than the size of the PCR particles. The filter holes filter and separate the PCR particles and powder in the mixture, so that the powder is thrown out from the filter holes to the desorption chamber 201, while the PCR particles remain in the separation filter cartridge 220, thereby separating the PCR particles and powder in the mixture, achieving better separation and desorption effects, and helping to improve the production quality of PCR particles.

[0028] In actual application, the specific structures of the hopper 100, the desorption mechanism 200 and the feeding mechanism 300 can be set accordingly according to actual use needs, and will not be described in detail here. A detailed explanation will be given below.

[0029] In some embodiments, the desorption mechanism 200 has a first discharge channel 202 and a second discharge channel 203. The first discharge channel 202 is connected to the interior of the separation filter cartridge 220 for outputting the PCR particles in the separation filter cartridge 220. The second discharge channel 203 is connected to the desorption chamber 201 for outputting the powder in the desorption chamber 201.

[0030] It is understandable that if Figure 1 and Figure 2As shown, the desorption mechanism 200 includes a housing assembly 210, a desorption chamber 201, a first discharge channel 202 and a second discharge channel 203 are all arranged in the housing assembly 210, the first discharge channel 202 is connected to the interior of the separation filter cartridge 220, and the second discharge channel 203 is connected to the desorption chamber 201. When in use, the powder desorbed and thrown out from the separation filter cartridge 220 enters the desorption chamber 201, and is then output through the second discharge channel 203. The PCR particles remaining in the separation filter cartridge 220 are output from the first discharge channel 202, which facilitates the separate output of the separated PCR particles and powder, making it easy to use.

[0031] In actual application, in addition to the above structure, the casing assembly 210 can also be set as a detachable structure. For example, the side of the casing assembly 210 is a detachable structure so that the desorption chamber 201 can be opened to discharge the powder therein, and it is also convenient to clean the inside of the desorption chamber 201; the separation filter cartridge 220 can also be set as a detachable structure or a door that can be opened and closed, etc., which can be set accordingly according to actual use needs.

[0032] Furthermore, the desorption mechanism 200 includes a casing assembly 210, a desorption chamber 201 is arranged in the casing assembly 210, the separation filter cartridge 220 is extended in the up and down directions and is fixedly connected to the casing assembly 210, and a first spiral blade 231 is provided on the first rotating shaft member 230 to define a spiral first channel 204 between the first rotating shaft member 230 and the inner wall of the separation filter cartridge 220, the first discharge channel 202 is arranged on the upper side of the separation filter cartridge 220 and is connected to the first channel 204, and the second discharge channel 203 is arranged on the lower side of the casing assembly 210.

[0033] It is understandable that if Figure 1 and Figure 2 As shown, the separation filter cartridge 220 extends in the up and down directions to be uprightly arranged in the desorption chamber 201. The separation filter cartridge 220 is fixedly connected to the casing assembly 210. The first rotating shaft 230 is provided with a first spiral blade 231 to define a spiral first channel 204 between the first rotating shaft 230 and the inner wall of the separation filter cartridge 220. The first discharge channel 202 is provided on the upper side of the separation filter cartridge 220 and is connected to the first channel 204. The second discharge channel 203 is provided on the lower side of the casing assembly 210. During use, the feeding mechanism 300 allows the mixed material to enter the first channel 204 from the lower side of the separation filter cartridge 220, the first rotating shaft 230 rotates and drives the first spiral blade 231 to rotate, and the first spiral blade 231 drives the mixed material to rotate and lift along the first channel 204. During the lifting process, the powder and the PCR particles are separated, and the powder falls into the desorption chamber 201, while the PCR particles continue to be spirally transported upward, and thus output through the first discharge channel 202 on the upper side, and the powder that falls into the desorption chamber 201 is output from the second discharge channel 203 on the lower side of the desorption chamber 201. The structure is simple and easy to use.

[0034] In actual application, in addition to the above structure, the separation filter cartridge 220 can also be horizontally extended, that is, horizontally arranged, and a stirring blade can be provided on the first rotating shaft 230 to stir the mixed material in the separation filter cartridge 220, so that the powder in the separation filter cartridge 220 is subjected to the action of centrifugal force and gravity to facilitate the desorption of the powder from the filter hole to the desorption chamber 201. The specific setting can be made according to actual use needs.

[0035] Furthermore, the bottom wall of the desorption chamber 201 is tilted, and the second discharge channel 203 is connected to the downwardly inclined side of the bottom wall of the desorption chamber 201 .

[0036] It is understandable that if Figure 2 As shown, the bottom wall of desorption chamber 201 is inclined, and second discharge channel 203 is connected to the lowest point of the bottom wall of desorption chamber 201. The inclined bottom wall facilitates the discharge of powder from desorption chamber 201 into second discharge channel 203, facilitating its discharge and improving its usability. In actual use, the specific inclination angle of the bottom wall of desorption chamber 201 can be set according to actual needs.

[0037] In some embodiments, the desorption mechanism 200 includes a collecting tank 250 , which is disposed corresponding to the second discharge channel 203 and is used to collect powder outputted from the second discharge channel 203 .

[0038] It is understandable that if Figure 1 and Figure 2 As shown, the collecting tank 250 is provided below the outlet of the second discharge channel 203. The powder discharged from the second discharge channel 203 can fall into the collecting tank 250 for collection, facilitating subsequent processing. In actual application, the specific structure of the collecting tank 250 can be set accordingly according to actual use needs.

[0039] In some embodiments, the feeding mechanism 300 includes a conveying pipe 310 and a conveying assembly. The conveying pipe 310 is respectively connected to the hopper 100 and the separation filter cartridge 220. The conveying pipe 310 is provided with a first material port 301 and a second material port 302. The first material port 301 connects the interior of the hopper 100 and the interior of the conveying pipe 310. The second material port 302 connects the interior of the conveying pipe 310 and the interior of the separation filter cartridge 220. The conveying assembly is arranged corresponding to the conveying pipe 310, and is used to convey the mixed material entering from the first material port 301 to the second material port 302.

[0040] It is understandable that if Figure 1 and Figure 2As shown, the hopper 100 is provided with a material cavity 101 for accommodating a mixture of PCR particles and powder. The delivery pipe 310 is connected to the hopper 100 and the separation filter cartridge 220 respectively. The interior of the delivery pipe 310 is connected to the material cavity 101 through a first material port 301, and the interior of the delivery pipe 310 is connected to the interior of the separation filter cartridge 220 through a second material port 302. When in use, the mixed material in the material cavity 101 enters the delivery pipe 310 through the first material port 301, and the delivery component delivers the mixed material entering from one material port to the second material port 302, so that the mixed material enters the interior of the separation filter cartridge 220, thereby realizing the delivery of the mixed material. The structure is simple and easy to use.

[0041] In actual application, in addition to the above structure, the feeding mechanism 300 can also connect the hopper 100 to the separation filter cartridge 220 only through the conveying pipe 310. The hopper 100 is set at a high place, and the conveying pipe 310 is set at an angle to utilize gravity to enable the mixed material in the hopper 100 to be transported to the interior of the separation filter cartridge 220. The specific setting can be made according to actual use needs.

[0042] Furthermore, the conveying assembly includes a second rotating shaft 320 and a second driver 330, the first material port 301 is arranged on the side of the conveying pipe 310, the second material port 302 is arranged at the end of the conveying pipe 310, the second rotating shaft 320 is arranged in the conveying pipe 310 and is provided with a second spiral blade 321 to define a spiral second channel 303 between the second rotating shaft 320 and the inner wall of the conveying pipe 310, and the second driver 330 is driven and connected to the second rotating shaft 320 to drive the second rotating shaft 320 to rotate.

[0043] It is understandable that if Figure 1 and Figure 2 As shown, the conveying pipe 310 is arranged horizontally in the left and right directions, the second rotating shaft 320 is arranged in the conveying pipe 310 and is provided with a second spiral blade 321 to define a spiral second channel 303 between the conveying pipe 310 and the inner wall, the first material port 301 is arranged at the upper side of the conveying pipe 310 and connects the second channel 303 and the material cavity 101, the second material port 302 is arranged at the right end of the conveying pipe 310 and connects the second channel 303 and the interior of the separation filter cartridge 220. When in use, the second driver 330 drives the second rotating shaft 320 to rotate, driving the second spiral blade 321 to rotate, so as to spirally propel the mixed material in the second channel 303 to the right to the second material port 302, and output it from the second material port 302 to the interior of the separation filter cartridge 220, thereby realizing the in-pipe conveying of the mixed material. The structure is simple and easy to use.

[0044] In actual application, in addition to the above structure, the conveying component may also include a push plate, which is arranged in the conveying pipe 310 and connected to the second driver 330. The second driver 330 drives the push plate to move along the conveying pipe 310 to push the mixed material falling from the first material port 301 into the conveying pipe 310 to the second material port 302. The specific setting can be made according to actual usage needs.

[0045] In some embodiments, the first material port 301 is located at the lower side of the hopper 100 , and the lower side wall of the hopper 100 has an inverted cone-shaped structure.

[0046] It is understandable that if Figure 1 and Figure 2 As shown, the lower sidewall of the hopper 100 has an inverted pyramidal structure. By setting the lower sidewall of the hopper 100 in an inverted cone structure, it is convenient for the mixed material in the material cavity 101 to enter the first material port 301, thereby facilitating the discharge of the mixed material in the material cavity 101. In actual application, the lower sidewall of the hopper 100 can also have an inverted cone structure, which can be set accordingly according to actual use needs.

[0047] In some embodiments, the PCR particle powder desorption device further includes an auxiliary mechanism 400 , which is disposed corresponding to the hopper 100 and is capable of wetting the mixed material in the hopper 100 .

[0048] It is understandable that if Figure 1 and Figure 2 As shown, friction between PCR particles generates static charge, which makes the PCR particles statically charged and causes the powder to be adsorbed on the PCR particles. By setting an auxiliary mechanism 400 to wet the mixed material in the hopper 100, the water molecules are conductive so that the static charge on the PCR particles can be neutralized or dissipated, eliminating the static electricity on the PCR particles, which is beneficial to separate the powder from the PCR particles and achieve a better desorption effect.

[0049] Furthermore, the auxiliary mechanism 400 includes a water pump 410, a water pipe 420 and a water outlet joint 430. The water pump 410 is connected to the water outlet joint 430 through the water pipe 420 and can supply water to the water outlet joint 430. The water outlet joint 430 is set corresponding to the hopper 100 and can output water flow to the hopper 100.

[0050] It is understandable that if Figure 1 and Figure 2As shown, water outlet connector 430 is a faucet. During use, water pump 410 is connected to an external water source. Water pump 410 delivers water to water outlet connector 430 via water pipe 420. Water is then output from water outlet connector 430 into material chamber 101, thereby soaking the mixed material in material chamber 101 and eliminating static electricity on the PCR particles. Its structure is simple and easy to use. In actual use, water outlet connector 430 can also be a water flow nozzle. In addition to the above structure, auxiliary mechanism 400 can also include a steam generator to generate steam and pass the steam into material chamber 101 to moisten the mixed material in material chamber 101. The specific setting can be corresponding to actual use needs.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A PCR particle powder desorption device, characterized in that: include: A hopper for accommodating a mixture of PCR particles and powder; a desorption mechanism, the desorption mechanism comprising a desorption chamber, a separation filter cartridge disposed within the desorption chamber, a filter hole disposed on the surface of the separation filter cartridge, a first rotating shaft disposed within the separation filter cartridge, and the desorption mechanism comprising a first driver drivingly connected to the first rotating shaft; a feeding mechanism, the feeding mechanism being connected to the hopper and the desorption mechanism and capable of conveying the mixed material in the hopper to the interior of the separation filter cartridge; the first driver being capable of driving the first rotating shaft to rotate, so that the first rotating shaft drives the mixed material inside the separation filter cartridge to rotate; and the filter holes being capable of filtering and separating PCR particles and powder in the mixed material; An auxiliary mechanism is provided corresponding to the hopper and can moisten the mixed material in the hopper.

2. The PCR particle powder desorption device according to claim 1, characterized in that: The desorption mechanism has a first discharge channel and a second discharge channel. The first discharge channel is connected to the interior of the separation filter cartridge and is used to output the PCR particles in the separation filter cartridge. The second discharge channel is connected to the desorption chamber and is used to output the powder in the desorption chamber.

3. The PCR particle powder desorption device according to claim 2, characterized in that: The desorption mechanism includes a casing assembly, the desorption chamber is arranged in the casing assembly, the separation filter cartridge extends in the up and down directions and is fixedly connected to the casing assembly, the first rotating shaft is provided with a first spiral blade to define a spiral first channel between the first rotating shaft and the inner wall of the separation filter cartridge, the first discharge channel is arranged on the upper side of the separation filter cartridge and is connected to the first channel, and the second discharge channel is arranged on the lower side of the casing assembly.

4. The PCR particle powder desorption device according to claim 3, characterized in that: The bottom wall of the desorption chamber is inclined, and the second discharge channel is connected to the downwardly inclined side of the bottom wall of the desorption chamber.

5. The PCR particle powder desorption device according to claim 2, characterized in that: The desorption mechanism includes a collecting tank, which is arranged corresponding to the second discharge channel and is used to collect powder output from the second discharge channel.

6. The PCR particle powder desorption device according to claim 1, characterized in that: The feeding mechanism includes a conveying pipe and a conveying assembly, the conveying pipe is connected to the hopper and the separation filter cartridge respectively, the conveying pipe is provided with a first material port and a second material port, the first material port is connected to the interior of the hopper and the interior of the conveying pipe, the second material port is connected to the interior of the conveying pipe and the interior of the separation filter cartridge, the conveying assembly is arranged corresponding to the conveying pipe, and is used to convey the mixed material entering from the first material port to the second material port.

7. The PCR particle powder desorption device according to claim 6, characterized in that: The conveying assembly includes a second rotating shaft and a second driver. The first material port is arranged on the side of the conveying pipe, and the second material port is arranged at the end of the conveying pipe. The second rotating shaft is arranged in the conveying pipe and is provided with a second spiral blade to define a spiral second channel between the second rotating shaft and the inner wall of the conveying pipe. The second driver is driven and connected to the second rotating shaft to drive the second rotating shaft to rotate.

8. The PCR particle powder desorption device according to claim 6, characterized in that: The first material port is located at the lower side of the hopper, and the lower side wall of the hopper is in an inverted cone structure.

9. The PCR particle powder desorption device according to claim 1, characterized in that: The auxiliary mechanism includes a water pump, a water pipe and a water outlet joint. The water pump is connected to the water outlet joint through the water pipe and can supply water to the water outlet joint. The water outlet joint is set corresponding to the hopper and can output water flow to the hopper.

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