Fermented grain sampler for layered digital display of temperature and humidity in fermentation process

Abstract

The utility model relates to a fermented grain sampler which is suitable for monitoring and sampling layered digital display temperature and humidity in a fermentation process. The conveying unit of the sampler partially extends into the hollow pipe cavity of the pipeline unit to provide driving force for fermented grain sampling. The pipeline unit is formed by sequentially connecting a discharging channel and a plurality of sampling channels in the axial direction, the bottom end of the discharging channel is connected with the top of the first section of sampling channel through a detachable axial joint part, and the adjacent sampling channels are connected through a detachable axial joint part. The sampler can be pre-buried in a cellar and does not need to be inserted again during sampling, so that time and energy are saved. And in a non-sampling period, the discharge port can be sealed, so that the influence on the fermentation environment is reduced, and the air tightness of the system is ensured. In addition, the sampler can also monitor and record the temperature and humidity of the fermented grains at the target height, so that workers can conveniently check the temperature and humidity conditions of the fermented grains in the pit at any time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fermented grains sampling, and particularly relates to a fermented grains sampler for displaying temperature and humidity of different layers in the fermentation process. BACKGROUND

[0002] Baijiu (liquor) of the Luzhou-flavor type is made from grains, using Luzhou-flavor Daqu as saccharifying and fermenting agent, through solid-state fermentation in pits, solid-state distillation, aging and blending. The Luzhou-flavor type of Baijiu has become the most popular type of Baijiu among consumers due to its strong pit aroma, well-coordinated flavor and long-lasting aftertaste. In the past two years, the market share of the Luzhou-flavor type of Baijiu has been about 60%. The diversity of microorganisms in the brewing process of the Luzhou-flavor type of Baijiu determines its unique flavor characteristics.

[0003] In the production of Baijiu, the solid fermentation method is usually used. In this method, solid fermentation materials are filled into pits and kept in a closed state to promote fermentation. Because the fermentation conditions (such as temperature, humidity, density and the degree of contact with the pit wall) are different in different areas of the pit, the fermented grains at different positions may be in different fermentation states even at the same time point. In order to ensure the quality of Baijiu and study various changes in the brewing process of fermented grains at different positions, such as the physical and chemical properties of fermented grain samples (including water content, acidity, reducing sugar content, starch level), flavor substances, changes in fermentation temperature and humidity, and succession rules of microbial community structure, etc., the selected position must be accurate when sampling fermented grains to avoid collecting samples from non-target areas, otherwise it may mislead the subsequent research or analysis results.

[0004] The existing fermented grains samplers are mostly Luoyang shovels. In the sampling process, multiple collections are required to reach the predetermined depth. The loose and easily-collapsing characteristics of fermented grains will affect the accuracy of sampling, and because multiple sampling is required in the process, it cannot be guaranteed that the same depth of fermented grains is collected each time. Due to the deposition of yellow water during the fermentation process, the fermented grains at the bottom of the pit often slide down.

[0005] CN208766006U discloses a temperature and humidity display of different layers of fermented grains sampler. The sampler realizes complete sampling by relatively rotating the inner pipe and the outer pipe and using the scraper on the outer pipe to scrape the fermented grains into the sampling bin. This design improves the accuracy and efficiency of sampling to some extent. However, the device still has some defects. On the one hand, the handle rotation needs manual operation and cannot realize automatic continuous sampling, which limits the further improvement of sampling efficiency. On the other hand, the device lacks a quantitative adjustment mechanism, resulting in large fluctuations in the sampling amount, making it difficult to meet the needs of precise analysis. This is an important limiting factor for research and production processes that require high-precision data. In addition, the opening and closing of the sampling port of the device is manually controlled, and only the simultaneous opening or closing can be achieved, and it is impossible to open a certain sampling port to sample the fermented grains at a certain depth.

[0006] In addition, on the one hand, there are differences in the understanding of those skilled in the art; on the other hand, the applicant has studied a large number of literatures and patents when making the utility model, but due to the limited space, all the details and contents are not listed in detail, which does not mean that the utility model does not have the characteristics of the prior art. On the contrary, the utility model already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art in the background art. Utility model content

[0007] In view of the deficiencies of the prior art, the present application provides a fermented grains sampler, especially a fermented grains sampler capable of displaying temperature and humidity of different layers during fermentation, aiming to solve one or more technical problems in the prior art.

[0008] The utility model relates to a fermented grains sampler capable of displaying temperature and humidity of different layers during fermentation, which comprises a pipeline unit and a conveying unit. The conveying unit can partially extend into the hollow pipe cavity of the pipeline unit and provide driving force for the sampling of fermented grains. The pipeline unit is composed of a discharge channel and a plurality of sampling channels in the axial direction to form an overall structure. The first end of the bottom end of the discharge channel and the second end of the top of the first sampling channel, as well as the second end and the third end of the adjacent sampling channels, constitute a detachable axial joint. The side wall of the sampling channel is provided with a sampling port, and the sampling port is provided with a scraping groove piece that can open and close along the circumferential direction of the side wall of the sampling channel. In the closed state of the scraping groove piece, the temperature sensor and the humidity sensor on the outer surface thereof are in contact with the fermented grains pile.

[0009] The axial expandable modular pipeline structure support of the fermented grains sampler can flexibly configure the sampling layer number according to the pit depth, the embedded sensor arranged in each layer of the sampling channel can capture the temperature and humidity data of the corresponding depth in real time, and the remote visual monitoring of the pit environment parameters is realized through the wireless transmission mode, so that the data distortion caused by the response lag and position deviation of the traditional plug-in probe is completely eliminated. The equipment pre-buried deployment scheme makes the sampling process not need to repeatedly puncture the fermented grains pile, the discharge outlet is in a sealed state during the non-operation period, the dynamic closing mechanism of the scraping groove device is combined, the stability of the anaerobic environment in the pit is effectively maintained, and the external interference is reduced. In addition, the layered independent control technology ensures that only the channel of the target depth is opened during sampling, the rest of the sampling ports are physically isolated through the scraping groove piece, the cross penetration of materials between different layers is completely blocked, and high-fidelity data support is provided for the fermentation process optimization.

[0010] According to a preferred embodiment, the top side wall of the discharge pipe of the discharge channel is provided with a discharge outlet bent towards the bottom end direction, the discharge outlet is provided with a beveled boundary, the outer edge of the discharge outlet is provided with a reverse folding flow guide lip structure, and the inner wall surface forms a double curvature transition surface. The beveled boundary design of the discharge outlet guides the fermented grains to discharge in a specific direction, avoids waste caused by material dispersion, and the reverse folding flow guide lip structure forms a fluid barrier through the outwardly folded arc edge, effectively inhibits the splashing or gravity backflow of fermented grains caused by inertia during the discharging process, and the double curvature transition surface of the inner wall optimizes the fermented grains flow path through the curvature gradient, reduces the local resistance of high-viscosity materials at the bending part, reduces the adhesion and residue of sugar and fiber on the inner wall of the discharge outlet, and ensures the smoothness of the discharge under continuous operation.

[0011] According to a preferred embodiment, when the scraping groove piece is closed, the rotating plane of the scraping groove piece and the pipe wall of the sampling channel form a smooth transition continuous closed surface; wherein the edge of the scraping groove piece is provided with a cutting edge to cut the fermented grains pile during the closing process of the scraping groove piece, and the fermented grains are collected into the sampling channel. The continuous closed surface of the scraping groove piece and the pipe wall forms a seamless sealed interface when the scraping groove piece is closed, completely blocks the contact of external air and the sampling channel, avoids the oxidation and deterioration of the fermented grains, the cutting edge adopts a progressive cutting design, synchronously completes the cutting and flow guiding of the fermented grains during the closing process of the scraping groove piece, replaces the tearing type sampling mode of the traditional sampler, eliminates the component distortion caused by the layered peeling of the material, and ensures the physical structure integrity and chemical property authenticity of the collected sample.

[0012] According to a preferred embodiment, the conveying unit comprises a plurality of conveying screws axially assembled, the fourth end and the fifth end of adjacent conveying screws are connected through detachable connection structure, the central axis of the conveying screw is coaxially arranged with the pipeline unit, and the outer edge of the axially extending helical blade forms a dynamically matched material pushing surface with the inner wall of the pipeline unit. The axial detachable assembly structure of the modular conveying screw allows dynamic adjustment of the conveying length according to the sampling depth requirement, and the dynamically matched gap between the outer edge of the helical blade and the inner wall of the pipeline forms a self-adaptive sealing layer using the viscoelastic properties of the fermented grains, which can not only reduce mechanical friction loss during conveying, but also dynamically adjust the gap width to adapt to the flow difference of materials with different moisture contents, while effectively preventing external air from penetrating into the fermentation environment and maintaining the stability of anaerobic fermentation conditions.

[0013] According to a preferred embodiment, the fifth end of the topmost conveying screw of the conveying unit penetrates the discharge pipe body, and a motor is connected to the end of the discharge pipe body. The through-type direct connection design of the motor and the end of the conveying screw realizes zero-loss power transmission, eliminates the intermediate link of traditional belt or gear transmission, avoids power attenuation and transmission error, and simplifies the maintenance complexity of the transmission system.

[0014] According to a preferred embodiment, the fourth end of the bottommost conveying screw of the conveying unit is detachably connected with the screw base, and the screw base is fixed to the bottom of the sampling channel at the axially bottommost end of the pipeline unit. The detachable connection structure of the bottom of the conveying screw and the base realizes quick separation and maintenance of the shafting, the rigid installation of the base fixed to the bottommost sampling channel forms a stable axial support point, which prevents the abnormal expansion of the gap between the helical blade and the pipe wall caused by the axial movement of the shafting due to material resistance during conveying, prevents the backflow of materials or the infiltration of air, and ensures the geometric precision and sealing reliability of the shafting during deep sampling.

[0015] According to a preferred embodiment, the connection area of the fourth end and the fifth end of adjacent conveying screws in the conveying unit forms a continuous helical guide surface in the axial and circumferential directions, and the helical pitch angle and lead of the helical blade are consistent at the connection area. The continuous helical guide surface design of adjacent helical blades at the connection area eliminates the stepped mutation at the joint of traditional modular conveying screws, maintains the continuity of the fermented grains conveying speed through the consistency of the helical pitch angle and the lead, avoids the local vortex or cavitation phenomenon caused by flow rate mutation, ensures the smooth transition of the material flow state during sampling, and reduces the risk of winding and accumulation of high-fiber fermented grains at the connection area.

[0016] According to a preferred embodiment, the detection heads of the temperature sensor and the humidity sensor are embedded in a wedge-shaped groove on the outer surface of the scraping blade, the long side direction of the groove is consistent with the rotation direction of the scraping blade, and the detection surfaces of the two sensors are flush with the outer surface of the scraping blade. The design of embedding the sensor detection heads in the wedge-shaped groove on the outer surface of the scraping blade and flush with the surface ensures that the detection surface is in direct contact with the fermented grains while avoiding interference with the material flow trajectory caused by protruding structures; the long side direction of the groove is consistent with the rotation direction of the scraping blade, which forms a fluid guiding effect, prevents fermented grain particles from entering the groove and causing contamination of the detection surface, ensures real-time and accurate measurement data, and at the same time, the side wall of the groove provides three-way mechanical protection for the sensor, reducing the probability of collision damage during equipment operation.

[0017] According to a preferred embodiment, the connecting surface of the screw base and the bottom of the sampling channel is provided with a positioning boss, the boss is matched with a complementary groove formed on the bottom of the sampling channel, and a through locking pin hole structure formed on the side wall of the boss is used for fixation. The complementary matching of the positioning boss and the groove realizes blind insertion type rapid positioning of the screw base, and the installation angle deviation is eliminated through mechanical limiting; the through locking pin hole structure adopts a bidirectional bolt fixation, which can still maintain the rigid connection between the base and the bottom of the sampling channel under vibration conditions, prevent the eccentric wear of the shaft system caused by micron-level displacement, ensure the coaxiality precision of the conveying unit during long-term operation, and prolong the service life of the key components.

[0018] According to a preferred embodiment, a tapered flow guiding gap is formed between the cutting edge of the scraping blade and the inner wall of the sampling port along the rotation direction of the scraping blade. The tapered flow guiding gap forms a progressive pressurization effect during the rotation of the scraping blade, forcing the fermented grains to be directed into the sampling channel along the gap, solving the problem of insufficient sampling amount caused by the backfall of loose materials due to gravity; the linearly decreasing gap width along the rotation direction can adaptively adjust the passing resistance of fermented grains with different densities, producing higher extrusion pressure when sampling low-moisture fermented grains to overcome the cohesion of the materials, and ensuring the representativeness and consistency of the stratified sampling data. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a disassembled structure schematic view of the pipeline unit and the conveying unit of the sampling device of the present application;

[0020] Figure 2 is a structure schematic view of the end joint position of the pipeline unit and the conveying unit of the sampling device of the present application under an oblique top view angle;

[0021] Figure 3 is a structure schematic view of the end joint position of the pipeline unit and the conveying unit of the sampling device of the present application under an oblique bottom view angle;

[0022] Figure 4is the external structure schematic diagram of pipeline unit and conveying unit of the sampling device after assembly of the utility model;

[0023] Figure 5 is the internal structure perspective view of pipeline unit and conveying unit of the sampling device after assembly of the utility model.

[0024] List of reference signs

[0025] 100: pipeline unit;110: discharge channel;111: discharge pipe body;112: discharge port;113: first end portion;120: sampling channel;121: sampling port;130: temperature sensor;140: humidity sensor;150: scraping blade;160: second end portion;170: third end portion;200: conveying unit;210: conveying screw;220: central shaft;221: fourth end portion;222: fifth end portion;223: spiral blade;224: screw base;230: motor. DETAILED DESCRIPTION

[0026] The utility model will be explained in detail below in combination with the drawings.

[0027] Orientation definition: combination Figure 1 With the material flow direction of pipeline unit 100 as the axial reference, the bottom end points to the upstream end where the material enters, that is, the axial position close to the driving starting point of conveying unit 200;The top end points to the downstream end where the material is output, that is, the axial end position close to discharge port 112.

[0028] The utility model relates to a kind of fermentation process number display temperature, humidity's fermented grains sampler, as Figure 1 As shown in the figure, the fermented grains sampler is composed of axial series discharge channel 110 and multiple sampling channels 120, which form the axial joint of pipeline unit 100, and conveying unit 200 can extend into the hollow lumen of pipeline unit 100, thereby providing the driving force required for sampling of fermented grains in it. Axial joint is a structural design in pipeline unit 100 for connecting different components in sections. The entire pipeline is composed of discharge channel 110 and multiple sampling channels 120, and these components are connected in turn along the length direction of the pipeline. This design allows operators to increase or decrease the number of sampling channels 120 according to actual needs, thereby flexibly adjusting the total length of the pipeline to adapt to fermentation pits of different depths without the need to customize a complete set of equipment. In specific use, axial joint has the characteristics of being detachable. When a certain section of pipeline unit 100 needs to be cleaned, repaired or replaced, only the corresponding interface needs to be disassembled to handle the local problem, without the need to disassemble the overall structure, significantly reducing the difficulty and time cost of maintenance.

[0029] Preferably, as Figure 1As shown, the first end 113 at the bottom of the discharge channel 110 is connected to the second end 160 at the top of the first sampling channel 120 via a threaded structure. Sealing grease is filled at the root of the thread to enhance sealing. The second end 160 and the third end 170 of adjacent sampling channels 120 are connected by the same threaded connection method, and the thread mating surfaces are ground to ensure axial alignment. A rectangular sampling port 121 is opened on the side wall of the sampling channel 120. The edges of the sampling port 121 are rounded and coated with a wear-resistant layer to prevent mash adhesion. A scraper blade 150 is mounted on the outside of the sampling port 121 via a rotating shaft mechanism. The curvature of its outer surface is consistent with that of the outer wall of the sampling channel 120, forming a continuous sealing interface when closed. The rotating shaft mechanism includes supports on both sides of the sampling port 121 and a rotating shaft passing through the scraper blade. The rotating shaft is connected to a drive assembly located inside the pipe wall. When the scraper blade 150 is in the closed state, the elastic sealing strip on its side edge forms a dynamic sealing interface with the inner wall of the sampling port 121. The pre-tightening force of the sealing strip is finely adjusted by the adjustment mechanism on the support. The cutting blade is set with a specific geometric angle along the rotation direction of the scraper blade 150, so that the cutting of the mash and the cleaning of the sealing interface are completed simultaneously during the closing process.

[0030] Preferably, such as Figure 1 As shown, the probes of the temperature sensor 130 and humidity sensor 140 are embedded in wedge-shaped grooves on the outer surface of the scraper blade 150. The groove depth matches the sensor package thickness, and the sensor surface is ground to ensure it is flush with the outer surface of the scraper blade 150. According to another embodiment, the end connection can adopt a flange structure, with a sealing ring on the flange mating surface and fastened with bolts. Anti-misalignment guide grooves are machined on the flange edge.

[0031] Preferably, such as Figure 1 , Figure 3 , Figure 4 As shown, the top sidewall of the discharge pipe body 111 of the discharge channel 110 has an inclined discharge port 112. The axis of the discharge port 112 forms an acute angle with the axis of the discharge pipe body 111. The outlet end is formed by multiple bevel cuts to create a progressive guide slope. The edges of the slope are rolled to enhance structural rigidity. The outer edge of the discharge port 112 is folded outward to form an arc-shaped guide lip. The guide lip has a streamlined cavity structure to optimize the flow path of the mash. The inner wall of the discharge port 112 is composed of a continuously and smoothly transitioning hyperbolic curved surface. The surface is mirror-polished and coated with a superhydrophobic coating to reduce mash residue. A diverter can be detachably installed at the end of the discharge port 112. The diverter includes radially distributed arc-shaped guide plates. The guide plates are thicker at the root to enhance support strength and gradually thin at the end to guide the mash to diffuse evenly.

[0032] Preferably, such as Figure 2As shown, the number of times the scraper blade 150 is activated can be manually determined by the operator based on the sampling amount, thereby improving sampling accuracy. When the scraper blade 150 is closed, its edge forms a dynamic sealing interface with the edge of the sampling port 121 through the sealing strip. The sealing strip uses a gradient porosity foam material to reduce structural damage caused during closure. The scraper blade 150 has a continuous cutting edge, and the surface of the cutting edge is coated with an anti-adhesion coating. The coating texture has a micro-nano composite structure to reduce mash adhesion. The back of the scraper blade 150 has a gradually expanding flow guiding cavity, and the cavity and the rotation trajectory of the scraper blade 150 form an optimized angle to improve the flow efficiency of the mash.

[0033] Preferably, such as Figure 5 As shown, the conveying unit 200 consists of multiple connectable conveying screws 210. The outer layer of the central shaft 220 of each screw section is made of high-hardness ceramic material, and the inner layer is made of a tough metal substrate. The central shaft 220 is coaxially arranged with the pipe unit 100, and the outer edge of the axially extending spiral blades 223 on its surface forms a dynamically cooperating material pushing surface with the inner wall of the pipe unit 100. The material pushing surface is an interface formed by the outer curved surface of the spiral blades 223 and the inner wall of the pipe, which is used to push the mash along the direction of rotation of the spiral blades 223 and finally discharge it from the outlet 112. The outer edge of the spiral blades 223 has a certain gap with the inner wall of the pipe, so that the viscosity of the mash can achieve dynamic sealing and isolate the influence of external air on the fermentation environment.

[0034] Preferably, such as Figure 5 As shown, the topmost conveying screw 210 penetrates the discharge channel 110 tube, and a bidirectional sealing thread is machined on the surface of the penetration section. The motor 230 is connected to the end of the conveying screw 210 via a nonlinear stiffness coupling. A multi-stage dynamic sealing system is installed at the through hole of the discharge channel 110, including an inner phase change sealant layer and an outer end face mechanical seal assembly. A micro oil reservoir structure is provided on the sealing surface to form a self-healing oil film on the surface of the conveying screw 210.

[0035] Preferably, such as Figure 5 As shown, the end of the bottommost conveying screw 210 is connected to the screw base 224 via an interlocking structure. A gradient porous damping pad is installed at the bottom of the screw base 224. The damping pad features a gradient pore size distribution design; the dense micropores on the surface filter high-frequency vibrations, while the large-pore structure at the bottom dissipates low-frequency energy. The base is fixed to the bottom of the sampling channel 120 via a self-centering locating pin. The surface of the locating pin is coated with a nano-composite coating to improve its resistance to fretting wear, and a shape memory alloy bushing is installed inside the pin hole to achieve a temperature-adaptive interference fit.

[0036] Preferably, such as Figure 3As shown, the spiral blades 223 of adjacent conveying screws 210 employ a three-dimensional curved surface overlap design at the connection area between the fourth end 221 and the fifth end 222 to ensure geometric continuity. The helix angle and lead of the overlap section are strictly consistent. The blade edges are treated with composite chamfering and deposited with a functional coating. The coating surface is made of a low-friction coefficient material, and the bottom layer is a high-bonding-strength transition layer. An axially extending fluid-guiding ridge is provided at the joint, and the ridge adopts a streamlined guide design to smoothly transition the material. The surface of the overlap area is precision polished to form an anisotropic texture, and the texture direction is consistent with the material flow direction to reduce flow resistance.

[0037] Preferably, such as Figure 2 , Figure 4 As shown, the temperature sensor 130 and humidity sensor 140 can be embedded in the wedge-shaped groove of the scraper blade 150, with the long side of the groove parallel to the rotation direction of the scraper blade 150 to avoid interference. Distributed microporous air channels are formed at the bottom of the groove, with superhydrophobic filter membranes embedded within the channels to prevent mash from seeping in. The cables of the temperature sensor 130 and humidity sensor 140 are led out through a pre-set stress relief channel inside the scraper blade 150. Flexible damping colloid is injected into the channel to absorb mechanical vibration, and the colloid forms a protective sleeve for the cables after curing.

[0038] Preferably, the bottom of the screw base 224 is provided with a polygonal anti-rotation positioning boss, the edges of which are reinforced and coated with a nano-composite wear-resistant coating. The boss and the groove at the bottom of the sampling channel 120 are designed with an interference fit, and the mating surfaces are provided with a self-lubricating layer to reduce assembly resistance. The sidewall of the boss has a through-hole locking pin hole structure, the pin shaft of the pin hole adopts a stepped sealing structure, the front end is provided with a guide chamfer, the middle integrates a multi-stage sealing ring, and the end is equipped with a torque-limiting tightening mechanism, thereby realizing the assembly between the screw base 224 and the sampling channel 120.

[0039] Preferably, a gradually narrowing flow guide gap is formed between the cutting edge of the scraper blade 150 and the inner wall of the sampling port 121. The width of the gap at the inlet end is greater than that at the outlet end to create a gradual pressurization effect, thereby improving the scraping and cutting ability of the mash pile during the closing process of the scraper blade 150. A drag-reducing texture is formed on the surface of the gap, and the texture units are asymmetrically distributed to induce the directional flow of the mash.

[0040] It should be noted that the above specific embodiments are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection scope. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A sampler for fermented mash with stratified digital display of temperature and humidity during fermentation, comprising a pipe unit (100) and a conveying unit (200), wherein the conveying unit (200) is capable of partially extending into the hollow cavity of the pipe unit (100) and providing driving force for sampling the mash, characterized in that, The pipeline unit (100) is an integral structure formed by axially assembling a discharge channel (110) and a plurality of sampling channels (120). The first end (113) at the bottom of the discharge channel (110) and the second end (160) at the top of the first sampling channel (120), as well as the second end (160) and the third end (170) of adjacent sampling channels (120), constitute a detachable axial joint. The sampling channel (120) has a sampling port (121) on its side wall. The sampling port (121) is equipped with a scraper (150) that can be opened and closed circumferentially along the side wall of the sampling channel (120). When the scraper (150) is closed, the temperature sensor (130) and humidity sensor (140) on its outer surface are in contact with the mash pile.

2. The fermented mash sampler according to claim 1, characterized in that, The top side wall of the discharge pipe body (111) of the discharge channel (110) is provided with a discharge port (112) that bends towards the bottom. The discharge port (112) is provided with a slanted boundary, and the outer edge of the discharge port (112) is provided with a reverse folding guide lip structure. The inner wall surface forms a double curvature transition surface.

3. The fermented mash sampler according to claim 1, characterized in that, When the scraper blade (150) is closed, its rotation plane forms a smooth transition continuous closed curved surface with the pipe wall of the sampling channel (120); wherein, the edge of the scraper blade (150) is provided with a cutting blade to cut the mash pile during the closing process of the scraper blade (150) and collect the mash into the sampling channel (120).

4. The fermented mash sampler according to claim 2, characterized in that, The conveying unit (200) includes a plurality of conveying screws (210) connected along the axial direction. The fourth end (221) and the fifth end (222) of adjacent conveying screws (210) are connected by a detachable connection structure. The central shaft (220) of the conveying screw (210) is coaxially arranged with the pipeline unit (100). The outer edge of the spiral blades (223) extending axially on its surface forms a dynamically cooperating material pushing surface with the inner wall of the pipeline unit (100).

5. The fermented mash sampler according to claim 4, characterized in that, The fifth end (222) of the topmost conveying screw (210) of the conveying unit (200) passes through the discharge pipe body (111) and extends to the end of the discharge pipe body (111) where a motor (230) is connected.

6. The fermented mash sampler according to claim 4, characterized in that, The fourth end (221) of the conveying screw (210) at the bottom of the conveying unit (200) is detachably connected to the screw base (224), and the screw base (224) is fixed to the bottom of the sampling channel (120) at the bottom of the axial direction of the pipeline unit (100).

7. The fermented mash sampler according to claim 4, characterized in that, In the conveying unit (200), the connecting area between the fourth end (221) and the fifth end (222) of the adjacent conveying screw (210) has a spiral blade (223) forming a continuously connected spiral guiding surface in the axial and circumferential directions, and the helix angle and lead of the spiral blade (223) are consistent at the connection point.

8. The fermented mash sampler according to claim 1, characterized in that, The probes of the temperature sensor (130) and the humidity sensor (140) are embedded in the wedge-shaped groove on the outer surface of the scraper (150). The long side of the groove is aligned with the rotation direction of the scraper (150), and the probe surfaces of the two sensors are flush with the outer surface of the scraper (150).

9. The fermented mash sampler according to claim 6, characterized in that, The connecting surface between the screw base (224) and the bottom of the sampling channel (120) is provided with a positioning boss. The boss cooperates with the complementary groove opened at the bottom of the sampling channel (120) and is fixed by the through locking pin hole structure opened on the side wall of the boss.

10. The fermented mash sampler according to claim 3, characterized in that, The cutting edge of the scraper blade (150) and the inner wall of the sampling port (121) form a guide gap that gradually narrows along the rotation direction of the scraper blade (150).

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