A liquor sampling device

Abstract

The application discloses a lees sampler, and relates to the technical field of liquor brewing. The lees sampler comprises an inner rod and a sleeve pipe sleeved on the inner rod, both ends of the inner rod are arranged outside the sleeve pipe, one end of the inner rod is provided with two sampling heads symmetrically arranged along the axis of the inner rod, the two sampling heads are connected with the inner rod and the sleeve pipe through a planar linkage mechanism respectively, the inner rod can move relative to the sleeve pipe, and the two sampling heads are driven to open or close through the planar linkage mechanism, and a sampling cavity is formed when the two sampling heads are closed. The lees sampler can be used for sampling lees in a saccharification heap. Compared with a traditional sampler with a lateral opening, the lees sampler can accurately obtain a sample of lees at a preset depth, and avoid the sample from being polluted by lees at other depths. After the obtained sample is detected and analyzed, the fermentation state of the lees at the preset depth can be accurately reflected, so that the detection result can be directly used for accurately regulating process parameters for entering a cellar.

Description

Technical Field

[0001] This application relates to the field of liquor brewing technology, specifically to a sampler for fermented mash. Background Technology

[0002] Heap fermentation, also known as saccharification heap fermentation, is a core process in the brewing of Maotai-flavor liquor. Essentially, it is a high-temperature, open-air solid-state fermentation process. The degree of fermentation of the mash at this stage directly determines the subsequent process parameters before fermentation in the cellar, exerting an irreversible regulatory effect on the flavor profile, yield, and typical style of the liquor. Therefore, precise sampling and analysis of mash at different depths in the saccharification heap is a necessary prerequisite for ensuring the scientific nature of process decisions.

[0003] Currently, the industry commonly uses samplers disclosed in CN202631306U, CN215640249U, and CN221199042U for sampling. These samplers mainly consist of a conical head with a sampling chamber, an operating rod connected to the conical head, and a sampling port on the side wall of the conical head that communicates with the sampling chamber. The sampling port is equipped with an openable sampling cover. During sampling, the operator holds the operating rod, inserts the conical head into the saccharification pile to a preset depth, opens the sampling cover, and uses rotation or shaking to force the mash from the sampling port into the sampling chamber. The conical head is then pulled out, completing a single sampling.

[0004] However, the above-mentioned sampler has the following drawbacks in practical applications: because the mash is wet, sticky, and has long fibers, and becomes viscoelastic after high-temperature gelatinization, the sampling port is easily blocked by rice husks, which prevents the mash from continuously entering the sampling chamber, often resulting in no sample or a small amount of sample in the sampling chamber; in order to overcome the blockage, the sampling personnel need to tap the operating lever or rotate it violently, which will destroy the original density gradient of the saccharification pile, causing vertical mixing between the upper and lower layers of mash, and the obtained sample may be contaminated by mash from other depths, making the sample unable to accurately reflect the fermentation state at the preset depth, resulting in a weak guidance role of the test results for production. Utility Model Content

[0005] The purpose of this application is to provide a fermented mash sampler that solves the problem that samples obtained by existing samplers may be contaminated by fermented mash from other depths.

[0006] The technical solution adopted by this application to solve its technical problem is: A fermented mash sampler includes an inner rod and a sleeve fitted on the inner rod. The two ends of the inner rod are respectively located outside the sleeve. One end of the inner rod is provided with two sampling heads arranged symmetrically about its axis. The two sampling heads are connected to the inner rod and the sleeve respectively through a planar linkage mechanism. The inner rod can move relative to the sleeve and drive the two sampling heads to open or close through the planar linkage mechanism, forming a sampling cavity when the two sampling heads are closed.

[0007] Furthermore, the inner rod is rotatably connected to the sleeve, so that the inner rod can rotate relative to the sleeve about its own axis.

[0008] Furthermore, the planar linkage mechanism includes a mounting base, a transmission base, two fixed connecting rods, and two movable connecting rods; the mounting base is fixedly connected to the sleeve, and the transmission base is threadedly connected to the inner rod; one end of each of the two fixed connecting rods is fixedly connected to the mounting base, and the other end is correspondingly hinged to the two sampling heads; one end of each of the two movable connecting rods is hinged to the transmission base, and the other end is correspondingly hinged to the two sampling heads.

[0009] Furthermore, the mounting base is fixed to the end of the sleeve and its opening is closed. The mounting base is provided with a through hole that communicates with the inner cavity of the sleeve. The inner rod passes through the through hole and can rotate within the through hole.

[0010] Furthermore, the inner rod is connected to two limiting parts, which are respectively located on both sides of the through hole to limit the axial movement of the inner rod.

[0011] Furthermore, the limiting portion between the mounting base and the transmission base is connected to the inner rod via a detachable structure.

[0012] Furthermore, the mounting base has a guide cone sleeved on the sleeve on the side away from the sampling head. The large end of the guide cone is connected to the mounting base, and the small end of the guide cone is connected to the sleeve.

[0013] Furthermore, the inner rod is provided with an inner rod handle at the end away from the sampling head, and the sleeve is provided with a sleeve handle at the end away from the sampling head.

[0014] Furthermore, the outer contour of the two sampling heads when closed includes a cylindrical segment and a conical segment, the cylindrical segment being close to the inner rod and the conical segment being away from the inner rod.

[0015] Furthermore, a steering plate is provided at the corner of the sampling chamber.

[0016] The beneficial effects of this application are: The sampler provided in this application embodiment is used to sample the mash in the saccharification pile. The specific sampling process is as follows: First, the two sampling heads are completely closed to seal the sampling cavity. The sampling heads are then inserted downward into the saccharification pile to prevent mash from other depths from entering the sampling cavity during this process. When the sampling heads reach a preset depth, the inner rod is controlled to move relative to the sleeve, and the two sampling heads are opened by the planar linkage mechanism, so that a downward-facing inlet is formed between the lower ends of the two sampling heads. At this time, the sampler only needs to be pressed down as a whole to press the mash into the sampling cavity without repeated knocking or violent rotation of the sleeve, thus avoiding vertical mixing of the upper and lower layers of mash. After the sample is loaded, the inner rod is controlled to move in the opposite direction relative to the sleeve, and the two sampling heads are closed again by the planar linkage mechanism to seal the sampling cavity and protect the sample inside. Then the sampler is pulled out to prevent mash from other depths from entering the sampling cavity and contaminating the sample inside the sampling cavity during this process.

[0017] Compared to traditional side-opening samplers, this application can accurately obtain samples of mash at a preset depth, avoiding contamination of the samples by mash at other depths. After the obtained samples are tested and analyzed, they can accurately reflect the fermentation state of the mash at the preset depth, so that the test results can be directly used to accurately control the fermentation process parameters. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the fermented mash sampler provided in the embodiments of this application; Figure 2 This is a state diagram of the two sampling heads in the fermented mash sampler provided in the embodiments of this application when they are open; Figure 3 This is a cross-sectional view of the fermented mash sampler provided in the embodiments of this application; Figure 4 yes Figure 3 Enlarged view of section A in the middle; Figure 5 This is a state diagram showing the state when the mash sampler provided in the embodiments of this application is inserted into the saccharification pile at a predetermined depth; Figure 6 This is a state diagram of sampling in the saccharification pile using the mash sampler provided in the embodiments of this application.

[0020] Figure label: 1-Inner rod; 2-Casing; 3-Sampling head; 31-Sampling chamber; 32-Cylindrical section; 33-Conical section; 4-Planar linkage mechanism; 41-Mounting base; 411-Through hole; 42-Transmission base; 43-Fixed connecting rod; 44-Modible connecting rod; 5-Limiting part; 6-Guide cone; 7-Inner rod handle; 8-Sleeve handle; 9-Steering wheel; 100-saccharification pile. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] In the description of this application, the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in actual application, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] See Figure 1 , Figure 2 , Figure 3This application provides a fermentation sampler, including an inner rod 1 and a sleeve 2 sleeved on the inner rod 1. The two ends of the inner rod 1 are respectively located outside the sleeve 2. One end of the inner rod 1 is provided with two sampling heads 3 arranged symmetrically with respect to their axis. The two sampling heads 3 are connected to the inner rod 1 and the sleeve 2 respectively through a planar linkage mechanism 4. The inner rod 1 can move relative to the sleeve 2 and drive the two sampling heads 3 to open or close through the planar linkage mechanism 4, and form a sampling cavity 31 when the two sampling heads 3 are closed.

[0025] Both the inner rod 1 and the sleeve 2 are vertically oriented. Their upper ends are the operating ends, allowing the sampling personnel to hold and control the sampling action. Their lower ends are the sampling ends, used to install the sampling head 3. The inner diameter of the sleeve 2 is larger than the outer diameter of the inner rod 1, allowing the sleeve 2 to be fitted over the inner rod 1. The length of the sleeve 2 is shorter than the length of the inner rod 1. When the sleeve 2 is fitted over the inner rod 1, the upper end of the inner rod 1 extends above the sleeve 2, and the lower end of the inner rod 1 extends below the sleeve 2. The inner rod 1 and the sleeve 2 are movably connected, allowing the inner rod 1 to move relative to the sleeve 2. Graduation marks can be provided on the outer wall of the sleeve 2 to indicate its insertion depth into the saccharification pair 100. These graduation marks start from the lower end of the sleeve 2 and are distributed axially upwards, with a graduation value of 1 cm. They can be formed by laser marking, etching, or printing.

[0026] Two sampling heads 3 are located below the lower end of the inner rod 1 and are symmetrically arranged about the axis of the inner rod 1. The upper ends of the two sampling heads 3, the lower end of the inner rod 1, and the lower end of the sleeve 2 are connected by a vertically arranged planar linkage mechanism 4. When the inner rod 1 moves relative to the sleeve 2, it drives the planar linkage mechanism 4 to move in the vertical plane, thereby causing the two sampling heads 3 to open or close. The opposite sides of the two sampling heads 3 are provided with concave grooves, which can be semi-cylindrical or hemispherical. When the two sampling heads 3 open outward, a funnel-shaped inlet is formed between their lower ends, facilitating the entry of the mash; when the two sampling heads 3 close inward, the two grooves meet to form a closed sampling cavity 31, which is used to intercept and preserve the mash that enters it, preventing it from falling or becoming contaminated.

[0027] The fermented grain sampler provided in this application embodiment can be made of food-grade stainless steel for all components to meet the corrosion resistance and hygiene requirements of the high temperature, high humidity and acidic environment in the liquor brewing workshop. For example, the inner rod 1 is machined from a stainless steel rod to ensure axial rigidity; the sleeve 2 is made of stainless steel tube with a polished outer surface to reduce frictional resistance when inserting into the fermented grain; the sampling head 3 is made of stainless steel plate by cutting, bending and welding, with a polished groove surface to prevent fermented grain residue and facilitate cleaning; the planar linkage mechanism 4 is made of stainless steel plate, stainless steel rod and other materials.

[0028] See Figure 5 , Figure 6The fermented mash sampler provided in this application embodiment is used to sample the fermented mash within 100 cubic meters of the saccharification pile. The specific sampling process is as follows: S1. According to the sampling depth range required by the process, mark the erasable sampling start and end marks on the scale of the sleeve 2; select the sampling position on the saccharification pile 100, and adjust the sampling angle β between the sampler axis and the horizontal plane, β is usually 45° to 90°; control the two sampling heads 3 to be in a closed state so that the sampling chamber 31 is completely closed; keep the inner rod 1 and the sleeve 2 relatively stationary, and insert the entire sampler into the saccharification pile 100 at a uniform speed along the sampling angle β until the sampling start mark on the sleeve 2 just coincides with the surface of the saccharification pile 100. At this time, the lower end of the sampling head 3 is located within the preset sampling range, i.e. Figure 5 Inside the dashed circle.

[0029] S2. Maintaining the axial position of the sleeve 2 unchanged, control the movement of the inner rod 1 relative to the sleeve 2, drive the planar linkage mechanism 4 to cause the two sampling heads 3 to open outward, forming a trumpet-shaped sampling port between the lower ends of the two sampling heads 3, such as Figure 6 As shown; keep the inner rod 1 and the sleeve 2 relatively stationary, and continue to press down the entire sampler along the original sampling angle β, so that the lees in the sampling range naturally fill between the two sampling heads 3; when the sampling end mark just coincides with the surface of the saccharification pile 100, stop pressing down. At this time, the lees between the two sampling heads 3 have been filled with a preset volume of lees; control the inner rod 1 to move in the opposite direction relative to the sleeve 2, drive the planar linkage mechanism 4 to drive the two sampling heads 3 to close inward, so as to preserve the lees sample in the closed sampling cavity 31 and realize quantitative sealing.

[0030] S3. Keep the inner rod 1 and the sleeve 2 relatively stationary, and pull the entire sampler upward out of the saccharification pile 100; then control the inner rod 1 to move relative to the sleeve 2, drive the planar linkage mechanism 4 to drive the two sampling heads 3 to open outward, so as to open the sampling chamber 31 and unload the mash sample inside into the sample bag; then rinse all surfaces in contact with the mash with clean water, and after there is no visible residue, the next sampling can be carried out.

[0031] Compared to traditional side-opening samplers, this application inserts the sampling head 3 into the saccharification pile 100 in a closed state during sampling, preventing mash from other depths from entering the sampling chamber 31. The sampling chamber 31 only opens after reaching the preset depth, allowing the mash to enter naturally as it moves downwards, without the need for repeated tapping or violent rotation of the sleeve 2, thus avoiding vertical mixing of upper and lower layers of mash. After the sample is loaded, the sampling chamber 31 is immediately closed to prevent mash from other depths from entering and contaminating the sample inside. This allows for the accurate acquisition of samples from the preset depth of mash. When the acquired samples are tested and analyzed, they can accurately reflect the fermentation state of the mash at the preset depth, enabling the test results to be directly used for precise control of the fermentation process parameters.

[0032] In some embodiments, see Figure 1 , Figure 2 The inner rod 1 can move axially relative to the sleeve 2, thereby driving the two sampling heads 3 to open or close via the planar linkage mechanism 4. For example, when the inner rod 1 moves upward relative to the sleeve 2, the two sampling heads 3 are driven to close via the planar linkage mechanism 4; when the inner rod 1 moves downward relative to the sleeve 2, the two sampling heads 3 are driven to open via the planar linkage mechanism 4.

[0033] For example, the inner hole of the sleeve 2 is provided with an internal thread section, and the outer surface of the inner rod 1 is provided with an external thread section. The external thread section is threadedly connected to the internal thread section and can be self-locking. By rotating the inner rod 1, it can be moved up or down relative to the sleeve 2. The planar linkage mechanism 4 includes a mounting base 41, a transmission base 42, two fixed connecting rods 43, and two movable connecting rods 44. The mounting base 41 is fixedly connected to the sleeve 2, and the transmission base 42 is rotatably connected to the lower end of the inner rod 1 through bearings or other structures. The two fixed connecting rods 43 are arranged symmetrically about the axis of the inner rod 1, and the upper ends of the two fixed connecting rods 43 are fixedly connected to the mounting base 41 through flat pins. The lower ends of the two fixed connecting rods 43 are correspondingly hinged to the two sampling heads 3 through cylindrical pins. The two movable connecting rods 44 are arranged symmetrically about the axis of the inner rod 1, and the upper ends of the two movable connecting rods 44 are hinged to the transmission base 42 through cylindrical pins. The lower ends of the two movable connecting rods 44 are correspondingly hinged to the two sampling heads 3 through cylindrical pins. All cylindrical pins are parallel.

[0034] During operation, controlling the inner rod 1 to rotate counterclockwise causes the inner rod 1 to move upward relative to the sleeve 2. The inner rod 1 rotates relative to the transmission seat 42, driving the transmission seat 42 to move the two movable connecting rods 44 upward, causing the two sampling heads 3 to rotate inward around their hinge points with the corresponding fixed connecting rods 43 to close. Controlling the inner rod 1 to rotate clockwise causes the inner rod 1 to move downward relative to the sleeve 2. The inner rod 1 rotates relative to the transmission seat 42, driving the transmission seat 42 to move the two movable connecting rods 44 downward, causing the two sampling heads 3 to rotate outward around their hinge points with the corresponding fixed connecting rods 43 to open.

[0035] In other embodiments, the inner rod 1 and the sleeve 2 can also be moved relative to each other using an axial sliding pair well known to those skilled in the art. This application does not limit the comparison to a single one.

[0036] In some embodiments, see Figure 1 , Figure 2 , Figure 3The inner rod 1 is rotatably connected to the sleeve 2, allowing the inner rod 1 to rotate relative to the sleeve 2 around its own axis. This, in turn, drives the two sampling heads 3 to open or close via the planar linkage mechanism 4. For example, when the inner rod 1 rotates clockwise relative to the sleeve 2, the planar linkage mechanism 4 drives the two sampling heads 3 to close; when the inner rod 1 rotates counterclockwise relative to the sleeve 2, the planar linkage mechanism 4 drives the two sampling heads 3 to open.

[0037] For example, the inner rod 1 is connected to the sleeve 2 via a bearing, so that the inner rod 1 can rotate relative to the sleeve 2, but cannot move axially relative to the sleeve 2. The planar linkage mechanism 4 includes a mounting base 41, a transmission base 42, two fixed connecting rods 43, and two movable connecting rods 44. The mounting base 41 is fixedly connected to the sleeve 2. The upper end of the transmission base 42 is provided with an internal threaded hole, and the lower end of the inner rod 1 is provided with an external threaded section. The external threaded section of the inner rod 1 is threadedly connected to the internal threaded hole of the transmission base 42 and can be self-locking. The two fixed connecting rods 43 are arranged symmetrically about the axis of the inner rod 1. The upper ends of the two fixed connecting rods 43 are fixedly connected to the mounting base 41 by flat pins, and the lower ends of the two fixed connecting rods 43 are correspondingly hinged to the two sampling heads 3 by cylindrical pins. The two movable connecting rods 44 are arranged symmetrically about the axis of the inner rod 1. The upper ends of the two movable connecting rods 44 are hinged to the transmission base 42 by cylindrical pins, and the lower ends of the two movable connecting rods 44 are correspondingly hinged to the two sampling heads 3 by cylindrical pins. All cylindrical pins are parallel.

[0038] During operation, controlling the inner rod 1 to rotate clockwise causes the inner rod 1 to drive the transmission seat 42 to move upward. The transmission seat 42 then drives the two movable connecting rods 44 to move upward, causing the two sampling heads 3 to rotate inward around their hinge points with the corresponding fixed connecting rods 43 to close. Controlling the inner rod 1 to rotate counterclockwise causes the inner rod 1 to drive the transmission seat 42 to move downward. The transmission seat 42 then drives the two movable connecting rods 44 to move downward, causing the two sampling heads 3 to rotate outward around their hinge points with the corresponding fixed connecting rods 43 to open.

[0039] In some embodiments, see Figure 3 , Figure 4 The mounting base 41 is fixed to the end of the sleeve 2 and its opening is closed. The mounting base 41 is provided with a through hole 411 that communicates with the inner cavity of the sleeve 2. The inner rod 1 passes through the through hole 411 and can rotate within the through hole 411.

[0040] Specifically, the mounting base 41 can be a circular structure made of stainless steel plate, with an outer diameter larger than that of the sleeve 2. The upper end face of the mounting base 41 is welded to the lower end face of the sleeve 2, and the upper end of the fixing rod 43 is fixedly connected to the lower end face of the mounting base 41 by a flat pin.

[0041] Correspondingly, the lower end opening of the sleeve 2 is closed by the mounting base 41 to form an end face seal, preventing the lees from entering the inner cavity of the sleeve 2 during the sampling process; the inner rod 1 and the through hole 411 can be fitted with a clearance fit, which serves both as a guide and radial support, reducing the shaking of the inner rod 1 during rotation.

[0042] In some embodiments, see Figure 4 The inner rod 1 is connected to two limiting parts 5, which are respectively located on both sides of the through hole 411 to limit the axial movement of the inner rod 1.

[0043] Correspondingly, by setting two limiting parts 5, the inner rod 1 is axially limited, so that the inner rod 1 can only rotate around its own axis and cannot move axially. This structure eliminates the need for traditional rotating support components such as bearings between the inner rod 1 and the sleeve 2, simplifying the overall structure and reducing manufacturing and assembly costs.

[0044] In some embodiments, see Figure 4 The limiting part 5 between the mounting base 41 and the transmission base 42 is connected to the inner rod 1 through a detachable structure.

[0045] Correspondingly, the limiting part 5 between the mounting base 41 and the transmission base 42 is located on the outside of the sleeve 2. By detachably connecting the limiting part 5 to the inner rod 1, when maintenance of the inner rod 1 is required, the limiting part 5 can be removed from the outside of the sleeve 2, allowing the inner rod 1 to be pulled out of the sleeve 2 without obstruction, thus achieving quick maintenance or replacement. The limiting part 5 can be a retaining spring, and the outer surface of the inner rod 1 has an annular groove that mates with the retaining spring. During installation, the retaining spring uses its own elasticity to lock into the groove, forming the limiting part 5 to restrict the axial movement of the inner rod 1. During disassembly, the retaining spring can be pried open with retaining spring pliers to remove it without damage, achieving quick assembly and disassembly.

[0046] See Figure 4 The limiting part 5 above the mounting base 41 is hidden in the inner cavity of the sleeve 2. The limiting part 5 can be an annular boss integrally formed with the inner rod 1, or it can be independently inserted into the preset slot of the inner rod 1 by a snap ring.

[0047] In some embodiments, see Figure 1 , Figure 2 , Figure 3 The mounting base 41 is provided with a guide cone 6 on the side away from the sampling head 3, which is sleeved on the sleeve 2. The large end of the guide cone 6 is connected to the mounting base 41, and the small end of the guide cone 6 is connected to the sleeve 2.

[0048] Specifically, the guide cone 6 is positioned above the mounting base 41, with its cross-section gradually decreasing from bottom to top. The outer diameter of the large end of the guide cone 6 is consistent with the outer diameter of the mounting base 41, while the outer diameter of the small end of the guide cone 6 smoothly transitions with the outer diameter of the sleeve 2. During the process of pulling the sampler out of the saccharification pile 100, the conical surface of the guide cone 6 can gradually expand the mash, squeezing the mash radially outward to form a transition channel, avoiding the removal of too much mash, and reducing the pulling resistance.

[0049] In some embodiments, see Figure 1 , Figure 2 , Figure 3 The inner rod 1 is provided with an inner rod handle 7 at the end away from the sampling head 3, and the sleeve 2 is provided with a sleeve handle 8 at the end away from the sampling head 3.

[0050] For example, both the inner rod handle 7 and the sleeve handle 8 can be made of stainless steel, with knurled surfaces or covered with anti-slip silicone sleeves, and are vertically welded to the upper ends of the inner rod 1 and sleeve 2 respectively, forming a T-shaped grip structure. By setting the inner rod handle 7 and sleeve handle 8, it is convenient for operators to apply force to the inner rod 1 and sleeve 2. During operation, the sampling personnel can hold the sleeve handle 8 with one hand to complete insertion, extraction and axial force application, and hold the inner rod handle 7 with the other hand to rotate or push and pull, realizing single-person operation.

[0051] In some embodiments, see Figure 1 When the two sampling heads 3 are closed, their outer contours include a cylindrical section 32 and a conical section 33. The cylindrical section 32 is close to the inner rod 1, and the conical section 33 is away from the inner rod 1. Accordingly, this structure can reduce the initial resistance when inserting the sampler into the saccharification pile 100 by utilizing the conical section 33, making it easier to insert the sampler into the saccharification pile 100 and reducing labor intensity.

[0052] In some embodiments, see Figure 3 A deflector plate 9 is provided at the corner of the sampling chamber 31. For example, the surface of the deflector plate 9 facing the inside of the chamber is a concave arc surface or a chamfered bevel, and it smoothly transitions with the adjacent chamber wall. Accordingly, by providing the deflector plate 9 at the corner of the sampling chamber 31, the accumulation and jamming of the mash at the corner is reduced, which facilitates the discharge of the material and makes cleaning easier after discharge, thus reducing the difficulty of cleaning residual mash.

[0053] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A sampler for fermented grains, characterized in that, It includes an inner rod (1) and a sleeve (2) sleeved on the inner rod (1). The two ends of the inner rod (1) are respectively located outside the sleeve (2). One end of the inner rod (1) is provided with two sampling heads (3) arranged symmetrically with respect to their axis. The two sampling heads (3) are connected to the inner rod (1) and the sleeve (2) respectively through a planar linkage mechanism (4). The inner rod (1) can move relative to the sleeve (2) and drive the two sampling heads (3) to open or close through the planar linkage mechanism (4). When the two sampling heads (3) are closed, they form a sampling cavity (31).

2. The fermented mash sampler according to claim 1, characterized in that, The inner rod (1) is rotatably connected to the sleeve (2) so that the inner rod (1) can rotate about its own axis relative to the sleeve (2).

3. The fermented mash sampler according to claim 2, characterized in that, The planar linkage mechanism (4) includes a mounting base (41), a transmission base (42), two fixed connecting rods (43) and two movable connecting rods (44); the mounting base (41) is fixedly connected to the sleeve (2), and the transmission base (42) is threadedly connected to the inner rod (1); one end of the two fixed connecting rods (43) is fixedly connected to the mounting base (41), and the other end is correspondingly hinged to the two sampling heads (3); one end of the two movable connecting rods (44) is hinged to the transmission base (42), and the other end is correspondingly hinged to the two sampling heads (3).

4. The fermented mash sampler according to claim 3, characterized in that, The mounting base (41) is fixed to the end of the sleeve (2) and its opening is closed. The mounting base (41) is provided with a through hole (411) that communicates with the inner cavity of the sleeve (2). The inner rod (1) passes through the through hole (411) and can rotate within the through hole (411).

5. The fermented grain sampler according to claim 4, characterized in that, The inner rod (1) is connected to two limiting parts (5), which are respectively provided on both sides of the through hole (411) to limit the inner rod (1) axially.

6. The fermented mash sampler according to claim 5, characterized in that, The limiting part (5) between the mounting base (41) and the transmission base (42) is connected to the inner rod (1) through a detachable structure.

7. The fermented grain sampler according to claim 4, 5 or 6, characterized in that, The mounting base (41) has a guide cone (6) on the side away from the sampling head (3) that is sleeved on the sleeve (2). The large end of the guide cone (6) is connected to the mounting base (41), and the small end of the guide cone (6) is connected to the sleeve (2).

8. The fermented mash sampler according to claim 1, characterized in that, The inner rod (1) is provided with an inner rod handle (7) at one end away from the sampling head (3), and the sleeve (2) is provided with a sleeve handle (8) at one end away from the sampling head (3).

9. The fermented mash sampler according to claim 1, characterized in that, The outer contours of the two sampling heads (3) when closed include a cylindrical segment (32) and a conical segment (33), the cylindrical segment (32) being close to the inner rod (1) and the conical segment (33) being away from the inner rod (1).

10. The fermented mash sampler according to claim 1, characterized in that, A steering plate (9) is provided at the corner of the sampling chamber (31).

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