Quality detection device for yoghourt production

Abstract

The invention discloses a quality detection device for yoghurt production, and relates to the technical field of yoghurt detection, the quality detection device comprises a production unit, the production unit comprises a fermentation tank for fermentation production of yoghurt, and the detection unit is arranged at the side part of the production unit; the detection unit comprises a hollow pipe rotationally arranged in the fermentation tank. The yoghourt in the fermentation tank is mixed and stirred through the rotary motion and the radial reciprocating motion of the sampling barrel in the fermentation tank, and multi-point dynamic sampling is carried out on areas with different heights in the fermentation tank through the sampling openings with different heights in the surface of the sampling barrel along with the motion of the sampling barrel. The sampled yogurt sample can enter a uniform cavity in the storage cavity, so that the storage cavity rotates along with the sampling barrel to uniformly mix the multi-point sampled yogurt, the diversity of the detected sample is ensured, and the sampled sample can fully represent the quality of the yogurt at each position in the fermentation tank.

Description

Technical Field

[0001] The present invention relates to the technical field of yogurt detection, in particular to a quality detection device for yogurt production. Background Art

[0002] In yogurt production, low-viscosity liquid milk needs to be inoculated with lactic acid bacteria in a tank to ferment into high-viscosity semi-fluid yogurt. The fermented yogurt will be stirred to break the emulsion, forming a highly viscous liquid. During this process, sample testing is required to determine the pH value and viscosity of the yogurt after fermentation and emulsion breaking.

[0003] Chinese patent CN120399862A discloses a yogurt fermentation quality detection mechanism, which includes a fermentation tank, a temperature detection unit installed inside the fermentation tank, and is used to detect the temperature distribution and quality factors of the yogurt sample; a sampling unit installed in the temperature detection unit and is used to sample the fermented yogurt in a sealed state; a sealing unit installed at the tank mouth of the fermentation tank and is used to seal and detect the yogurt fermentation process; a bacteria detection unit installed on the sealing unit, and a three-electrode system is used to detect the yogurt fermentation quality index. The sealing unit and the sampling unit are designed to achieve sealed sampling and detection, avoiding exposure of the yogurt and the sample to the air; the outer cover and the inner cover of the sealing unit cooperate to create a sealed environment during fermentation and sampling; the sampling unit completes operations in the temperature detection unit, reducing the mixing of bacteria, ensuring that the detection results truly reflect the quality of the yogurt in the fermentation tank, preventing misjudgment caused by interference from bacteria, and avoiding affecting the subsequent production process control.

[0004] The above patents and prior art have the following problems: When the yogurt is stirred after fermentation, a high shear area will be formed near the stirring blades, making the viscosity of the yogurt at this location lower than that of the yogurt near the tank body. In addition, during the fermentation process of yogurt, heat will be generated, causing the temperature of the yogurt to decrease from the center of the tank body to the tank wall. As a result, the microorganisms in the center of the tank body form a high activity area relative to the tank wall due to the temperature, making the fungi at this location more active and causing the pH value at this location to drop faster. Therefore, the above two factors will cause the pH value and viscosity of the yogurt in different areas inside the tank body to be different. If a sampling valve connected to the tank body is used for release sampling, there will be a large single-point sampling error, resulting in inaccurate detection sample parameters during the yogurt production process, thereby affecting the judgment of relevant parameters in yogurt production. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A quality inspection device for yogurt production, comprising: a production unit, the production unit comprising a fermentation tank for fermenting and producing yogurt; and a detection unit, the detection unit being provided on a side of the production unit; The detection unit includes a hollow tube rotatably arranged inside the fermentation tank, a storage cavity for mixed sampled yogurt is fixedly connected to the bottom of the hollow tube, a plurality of sampling cylinders are movably arranged at the bottom of the storage cavity, the sampling cylinders move reciprocatingly radially inside the fermentation tank, and the sampling cylinders rotate with the storage cavity, a plurality of sampling ports are opened on the side wall of the sampling cylinder, and the sampling ports opened on the side wall of the sampling cylinder are all located at different heights, and the sampling cylinder is connected to the storage cavity through a hose at its top.

[0007] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: The production unit further comprises a rotary drive source mounted on the top of the fermentation tank, wherein the rotary drive source is connected to the hollow tube via a transmission member; A feed port is provided on the side of the fermentation tank, and a discharge port is provided on the bottom of the fermentation tank.

[0008] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: The bottom of the storage cavity is fixedly connected to the equipment cavity, and the equipment cavity is fixedly connected through the fixing rod and the fixing disk at the bottom. A control drive source is installed inside the equipment cavity, and the output shaft of the control drive source rotates through the equipment cavity and the fixing disk and is fixedly connected to the rotating disk.

[0009] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: The surface of the fixed disk is provided with a plurality of straight sliding grooves, which extend outward from the center of the fixed disk, and the surface of the rotating disk is provided with a plurality of arc sliding grooves, which are evenly distributed along the outer circumference of the rotating disk; The top of the sampling cylinder is fixedly connected with a cannula, and the cannula is movably arranged inside the sliding straight groove and the sliding arc groove.

[0010] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: The outer side of the fixed disk is fixedly connected to a plurality of folding plates along its circumferential direction. The folding plates are arranged between adjacent sampling cylinders. The bottom of the folding plates is arranged at the bottom end of the rotating disk and extends toward the center of the rotating disk. The bottom of the folding plate is fixedly connected with an extension rod, and a plurality of stirring blades are arranged at intervals on the surface of the extension rod, and the stirring blades are arranged obliquely on the side of the extension rod.

[0011] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: The production unit also includes a pumping member installed on the top of the fermentation tank. The air inlet of the pumping member is connected to the sampling bottle through a conduit. The side of the sampling bottle is plugged with a pumping tube, and the pumping tube is movably plugged into the interior of the hollow tube.

[0012] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: A uniform cavity is provided inside the storage cavity, and the uniform cavity is communicated with the pumping tube and the hose respectively. There is a space between the bottom of the uniform cavity and the bottom of the pumping tube.

[0013] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: The position of the sampling port on the side wall of the sampling tube is opposite to the direction in which the sampling port rotates inside the fermenter; The fixed disk and the rotating disk are rotatably arranged inside the fermentation tank, and a space for accommodating yogurt fermentation is provided at the bottom of the fixed disk and the rotating disk.

[0014] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: A polymer tube is provided inside the sampling cylinder, a side of the polymer tube is connected to a sampling port, and the sampling port is connected to a hose through the polymer tube.

[0015] As a preferred embodiment of the quality inspection device for yogurt production of the present invention, wherein: The inner ring of the sampling port is provided with a blocking block, the surface of the blocking block is installed with an elastic part, the inner part of the sampling port is provided with a blocking ball, the surface of the blocking ball is wrapped with a silicone layer, the middle ring of the blocking ball is provided with a collar, the collar is fixedly connected to the blocking block through the elastic part, and the blocking ball is in contact and closed with the groove on the surface of the blocking block.

[0016] Beneficial effects of the present invention: The yogurt inside the fermentation tank is mixed and stirred by the rotational motion and radial reciprocating motion of the sampling tube inside the fermentation tank, and multi-point dynamic sampling is performed on areas at different heights inside the fermentation tank through sampling ports at different heights on the surface of the sampling tube as the sampling tube moves. The yogurt sample after sampling will enter the uniform cavity inside the storage chamber, so that the storage chamber rotates with the sampling tube to complete the uniform mixing of the multi-point sampled yogurt, thereby ensuring the diversity of the test samples and making the sampled samples more fully represent the quality of the yogurt at various positions inside the fermentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments, wherein: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A; Figure 3 This is a schematic diagram of the connection structure of the fermentation tank top of the present invention; Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part B; Figure 5 This is a schematic diagram of the internal structure connection between the storage chamber and the equipment chamber of the present invention; Figure 6 This is a schematic diagram of the internal structure connection of the sampling tube of the present invention; Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part C; Figure 8 This is a schematic diagram of the spacing distribution of sampling ports on the surface of multiple sampling tubes of the present invention; Figure 9 This is a schematic diagram of uniform distribution of sampling ports on the surfaces of multiple sampling tubes of the present invention; Figure 10 Schematic diagram of the distribution of sliding arc grooves at the bottom of the rotating disk of the present invention; Figure 11 This is a schematic diagram of the sampling tube of the present invention deployed inside a fermentation tank; Figure 12 This is a schematic diagram of the position distribution of the stirring blades and sampling tube of the present invention.

[0018] In the picture: 1. Production unit; 101. Support legs; 102. Fermentation tank; 103. Feeding port; 104. Feeding port; 105. Pumping element; 1051. Sampling bottle; 1052. Pumping tube; 2. Detection unit; 201. Hollow tube; 2011. Transmission part; 2012. Rotational drive source; 202. Storage chamber; 2021. Hose; 2022. Uniform chamber; 203. Equipment chamber; 2031. Fixed rod; 2032. Control drive source; 204. Fixed disk; 2041. Sliding straight groove; 2042. Folding plate; 2043. Extension rod; 2044. Stirring blade; 205. Rotating disk; 2051. Sliding arc groove; 206. Sampling tube; 2061. Polymer tube; 2062. Sampling port; 2063. Blocking block; 2064. Elastic part; 2065. Ring; 2066. Blocking ball; 2067. Cannula. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1: This example Figure 1 - Figure 12 As shown, a quality inspection device for yogurt production includes: a production unit 1, wherein the production unit 1 includes a fermentation tank 102 for fermenting and producing yogurt, wherein the bottom of the fermentation tank 102 is provided with support legs 101, and the side of the fermentation tank 102 is provided with a ladder; and further includes: a detection unit 2, wherein the side of the production unit 1 is provided with the detection unit 2; The detection unit 2 includes a hollow tube 201 rotatably arranged inside the fermentation tank 102, a storage chamber 202 for mixing and sampling yogurt is fixedly connected to the bottom of the hollow tube 201, and a plurality of sampling cylinders 206 are movably arranged at the bottom of the storage chamber 202. The sampling cylinders 206 move radially back and forth inside the fermentation tank 102, and the sampling cylinders 206 rotate with the storage chamber 202. The side wall of the sampling cylinder 206 is provided with a plurality of sampling ports 2062, and the sampling ports 2062 opened on the side wall of the sampling cylinder 206 are all located at different heights. Figure 8 As shown, of course, the side wall of the sampling tube 206 can also be provided with sampling ports 2062 at the same height as shown in FIG. Figure 9 As shown, sampling is carried out during the movement of the sampling cylinder 206, and the sampling cylinder 206 is connected to the storage chamber 202 through the hose 2021 at the top thereof. A flow balancer or an electromagnetic flow valve controlled by a PLC connection is provided at the connection between the hose 2021 and the storage chamber 202 to ensure that the flow of each hose 2021 is consistent when the pumping member 105 moves, thereby achieving relatively equal suction.

[0021] like Figure 1 - Figure 3 As shown, the production unit 1 further includes a rotary drive source 2012 installed on the top of the fermentation tank 102, and the rotary drive source 2012 is connected to the hollow tube 201 through a transmission member 2011. The rotary drive source 2012 is preferably a three-phase reduction motor and is controlled by a PLC and an encoder. The transmission member 2011 is preferably a pulley or sprocket installed on the output shaft of the rotary drive source 2012, or a pulley or sprocket on the top of the hollow tube 201, and a belt is provided between the two pulleys or a chain is provided between the two sprockets. A feed port 104 is provided on the side of the fermentation tank 102, and a discharge port 103 is provided on the bottom of the fermentation tank 102. The outsides of the feed port 104 and the discharge port 103 are connected to external pipelines through valves, and the hollow tube 201 is rotatably connected to the fermentation tank 102 through a sealing ring and a bearing.

[0022] like Figure 2 - Figure 5 as well as Figure 10 - Figure 12 As shown, the bottom of the storage chamber 202 is fixedly connected to the equipment chamber 203, and the equipment chamber 203 is fixedly connected to the fixed disk 204 through a fixed rod 2031 at the bottom thereof. A control drive source 2032 is installed inside the equipment chamber 203. The output shaft of the control drive source 2032 rotates through the equipment chamber 203 and the fixed disk 204 and is fixedly connected to the rotating disk 205. The control drive source 2032 is preferably a reduction motor and is controlled by a PLC and an encoder. like Figure 6 and Figure 10 - Figure 12 4. The yogurt production quality inspection device according to claim 3, characterized in that: The fixed disk 204 has a plurality of straight sliding grooves 2041 extending outward from the center of the fixed disk 204. The rotating disk 205 has a plurality of arcuate sliding grooves 2051 evenly distributed along the outer circumference of the rotating disk 205. The number of straight sliding grooves 2041 and the number of arcuate sliding grooves 2051 are the same, and the bottoms of the straight sliding grooves 2041 are correspondingly provided with arcuate sliding grooves 2051. The top of the sampling tube 206 is fixedly connected with a cannula 2067, and the cannula 2067 is movably arranged inside the sliding straight groove 2041 and the sliding arc groove 2051; The surface of the insert 2067 is provided with four discs, and the insert 2067 is movably connected to the upper and lower sides of the sliding straight groove 2041 and the upper and lower sides of the sliding arc groove 2051 through two discs. Of course, in order to make the insert 2067 move smoothly in the sliding straight groove 2041 and the sliding arc groove 2051, a round sleeve can be installed on the surface of the insert 2067 through a bearing. The surface of the round sleeve is coated with a polytetrafluoroethylene coating, thereby reducing the friction coefficient of the insert 2067 as the insert 2067 moves in the sliding straight groove 2041 and the sliding arc groove 2051. The material of the round sleeve can also be selected to embed a solid lubricant such as molybdenum disulfide into the metal to form a self-lubricating surface layer, or use food-grade base oil as the lubricant, so that the insert 2067 can slide in the sliding straight groove 2041 and the sliding arc groove 2051.

[0023] Operation process: Yogurt raw materials that need to be processed and mixed with lactic acid bacteria are added to the interior of the fermentation tank 102 through the feed port 104. When the preset fermentation time is reached and demulsification and stirring are required, the rotary drive source 2012 is started, so that the rotary drive source 2012 drives the hollow tube 201 to rotate through the transmission member 2011. When the hollow tube 201 rotates, the storage chamber 202, the equipment chamber 203, the fixed disk 204, the rotating disk 205 and the sampling cylinder 206 at the bottom thereof are driven to rotate, so that the sampling cylinder 206 rotates in the fermentation tank 102, thereby stirring the interior of the fermentation tank 102, so that the yogurt in the fermentation tank 102 is stirred, demulsified and mixed; During the rotation of the sampling cylinder 206, the control driving source 2032 intermittently drives the rotating disk 205 at the bottom thereof to rotate forward and reverse. Then, when the control driving source 2032 drives the rotating disk 205 to rotate forward, the rotating disk 205 squeezes the cannula 2067 through the sliding arc groove 2051, so that it and the sampling cylinder 206 move outward along the sliding straight groove 2041. When the control driving source 2032 drives the rotating disk 205 to rotate reversely, the rotating disk 205 squeezes the cannula 2067 along the sliding straight groove 2041 through the sliding arc groove 2051, driving the sampling cylinder 206 to move inward. Therefore, the forward and reverse rotation of the rotating disk 205 causes the sliding arc groove 2051 to squeeze the cannula 2067 to reciprocate inside the sliding straight groove 2041, thereby driving the sampling cylinder 206 to move radially inside the fermentation tank 102. Reciprocating motion, so that during the process of the sampling cylinder 206 rotating and stirring inside the fermentation tank 102, the sampling cylinder 206 can also reciprocate radially, and then during the radial reciprocating motion of the sampling cylinder 206, the yogurt in the fermentation tank 102 is forcibly pushed from the center to the edge, and then pulled back from the edge to the center, thereby effectively eliminating the uneven stirring of the yogurt caused by the low fluidity of the yogurt near the outer wall of the fermentation tank 102, and the composite shear force generated by the rotation of the sampling cylinder 206 and the radial reciprocating motion of the sampling cylinder 206, so that the stirring of the yogurt can be quickly transmitted to the entire yogurt inside the fermentation tank 102, and the composite shear force can break the stirring boundary generated by the rotation of the conventional sampling cylinder 206, so that the yogurt inside the fermentation tank 102 is stirred more evenly. Embodiment 2: This embodiment differs from the first embodiment in that: like Figure 12 As shown, a plurality of folding plates 2042 are fixedly connected to the outer side of the fixed disk 204 along its circumferential direction. The folding plates 2042 are arranged between adjacent sampling cylinders 206. The bottom of the folding plates 2042 is arranged at the bottom end of the rotating disk 205 and extends toward the center of the rotating disk 205. The bottom of the folding plate 2042 is fixedly connected to an extension rod 2043 , and a plurality of stirring blades 2044 are arranged at intervals on the surface of the extension rod 2043 , and the stirring blades 2044 are arranged obliquely on the side of the extension rod 2043 .

[0024] The rest of the structure is the same as that of the first embodiment.

[0025] Operation process: In order to further improve the stirring effect of the yogurt inside the fermentation tank 102, a plurality of stirring blades 2044 are set at the bottom of the fixed disk 204, so that the stirring blades 2044 stir the inside of the fermentation tank 102 along with the fixed disk 204, so that the stirring blades 2044 can rotate and turn the yogurt inside the fermentation tank 102 during rotation, and combined with the rotation of the sampling cylinder 206 and the radial reciprocating motion of the sampling cylinder 206, the mixing effect can be further enhanced. That is, the design of the stirring blades 2044 increases axial mixing, and combined with the rotation of the sampling cylinder 206 The circumferential mixing and the radial mixing of the reciprocating motion of the sampling cylinder 206 enhance the mixing effect and prevent the mixing and stratification of the yogurt. In the implementation of the circumferential mixing of the rotating sampling cylinder 206 and the radial mixing of the reciprocating motion of the sampling cylinder 206, the yogurt is mainly "kneaded" and "pushed and pulled" relatively horizontally, and the axial mixing ability is weak. The added stirring blades 2044 make up for this weakness, so that the sampling cylinder 206 and the stirring blades 2044 are combined to perform multi-dimensional mixing of the yogurt inside the fermentation tank 102, avoiding the axial stratification of the yogurt under the influence of its high viscosity. Example 3: This embodiment is different from the above embodiment in that: like Figure 1 - Figure 5 As shown, the production unit 1 also includes a pumping member 105 installed on the top of the fermentation tank 102. The pumping member 105 is preferably a vacuum pump controlled by a PLC. The air inlet of the pumping member 105 is connected to the sampling bottle 1051 through a conduit. A pumping tube 1052 is connected to the side of the sampling bottle 1051. The pumping tube 1052 is movably inserted into the interior of the hollow tube 201. The pumping tube 1052 and the hollow tube 201 are connected by a bearing, and a sealing ring is provided between the top of the hollow tube 201 and the pumping tube 1052, and is fixed by an end cover so that the end cover is fixed to the top of the hollow tube 201 with the sealing ring at its center, and the pumping tube 1052 is rotatably set at the center of the sealing ring and the end cover. Of course, a gas-liquid separator / buffer tank can also be installed between the sampling bottle 1051 and the pumping member 105.

[0026] like Figure 5 and Figure 11 - Figure 12As shown, a uniform cavity 2022 is opened inside the storage cavity 202, and the uniform cavity 2022 is respectively connected to the pumping tube 1052 and the hose 2021. There is a space between the bottom of the uniform cavity 2022 and the bottom of the pumping tube 1052, and the pumping tube 1052 is located at the height of the uniform cavity 2022 to control the content of yogurt sucked into the storage cavity 202. When the yogurt sucked into the storage cavity 202 reaches a preset height, it will be drawn out by the pumping tube 1052 into the interior of the sampling bottle 1051. The pumping tube 1052 is preferably a food-grade steel pipe.

[0027] like Figure 8 - Figure 11 As shown, the sampling port 2062 is opened on the side wall of the sampling cylinder 206 , and the position thereof is opposite to the direction in which the sampling port 2062 rotates inside the fermentation tank 102 ; The fixed disk 204 and the rotating disk 205 are rotatably arranged inside the fermentation tank 102. The bottom of the fixed disk 204 and the rotating disk 205 is provided with a space for accommodating yogurt fermentation, that is, the fixed disk 204 and the rotating disk 205 are not immersed in the interior of the yogurt, so that only the sampling cylinder 206 is inserted into the interior of the yogurt, thereby preventing the expanded movement structure of the sampling cylinder 206 from being immersed in the yogurt and causing contamination of the yogurt.

[0028] like Figure 6 As shown, a polymer tube 2061 is provided inside the sampling barrel 206, and a sampling port 2062 is connected to the side of the polymer tube 2061. The sampling port 2062 is connected to the hose 2021 through the polymer tube 2061, so that the hose 2021 can pump the liquid inside the polymer tube 2061, so that the yogurt outside the sampling port 2062 is drawn into the polymer tube 2061 by the sampling port 2062 and then reaches the inside of the hose 2021 and enters the interior of the uniform cavity 2022. The hose 2021 is provided with sufficient length between the storage cavity 202 and the sampling barrel 206, so that when the sampling barrel 206 moves back and forth, the hose 2021 will not be excessively pulled.

[0029] like Figure 6 - Figure 7 As shown, the inner ring of the sampling port 2062 is provided with a blocking block 2063, and the surface of the blocking block 2063 is installed with an elastic member 2064, and the elastic member 2064 is preferably a spring. The interior of the sampling port 2062 is movably provided with a blocking ball 2066, and the surface of the blocking ball 2066 is wrapped with a silicone layer. The middle ring of the blocking ball 2066 is provided with a collar 2065, and the collar 2065 is fixedly connected to the blocking block 2063 through the elastic member 2064, and the blocking ball 2066 is in contact with and closed by the groove on the surface of the blocking block 2063.

[0030] By blocking the blocking ball 2066 and the sampling port 2062 being located on the side wall of the sampling cylinder 206 in a direction opposite to the direction in which the sampling port 2062 rotates inside the fermentation tank 102, the amount of yogurt squeezed into the polymerization tube 2061 during the movement of the sampling cylinder 206 is reduced. Of course, the blocking ball 2066 may not be provided, and the pumping member 105 may blow air into the uniform cavity 2022 and the polymerization tube 2061 before suctioning, so that the yogurt entering the polymerization tube 2061 is discharged. However, in this process, the air or gas blown out by the pumping member 105 needs to be sterilized.

[0031] The rest of the structure is the same as that of the first and second embodiments.

[0032] Operation: After the yogurt in the fermentation tank 102 is stirred, the pumping member 105 is activated, pumping the air in the sampling bottle 1051, the pumping tube 1052, and the storage chamber 202, thereby generating a negative pressure inside the storage chamber 202. This negative pressure in the storage chamber 202 generates suction through the hose 2021 on the polymerization tube 2061 and the sampling port 2062, causing the sampling port 2062 to sample the yogurt outside of the sampling port and draw the sampled yogurt into the homogenization chamber 2022. The sampling ports 2062 on the surfaces of the different sampling cylinders 206 are at different heights. Combined with the fact that during negative pressure suction in the storage chamber 202, the rotary drive source 2012 drives the sampling cylinder 206 to rotate at a low speed within the yogurt, and in conjunction with the forward and reverse rotation of the control drive source 2032, the sampling cylinder 206 maintains a dynamic operating state of rotational motion and reciprocating linear motion within the yogurt. Consequently, the sampling cylinder 206, in conjunction with its motion trajectory and the sampling ports 2062 on its surface, can dynamically sample yogurt at various locations within the fermentation tank 102 over a wide range and at varying heights, thereby ensuring sample diversity. Furthermore, the storage chamber 202 rotates with the activation of the rotary drive source 2012, allowing the diversely sampled yogurt sample to be drawn into the homogenizing chamber 2022 and then thoroughly mixed as the storage chamber 202 rotates. The rotation of the storage chamber 202 can cause the uniformity chamber 2022 to rotate as a whole, reducing its internal mixing dead angle, so that the sample yogurt at multiple positions is mixed inside the uniformity chamber 2022, and then sucked into the sampling bottle 1051 after passing through the uniformity chamber 2022, which is convenient for subsequent detection of the yogurt inside the sampling bottle 1051.

[0033] Of course, the device can also install a food-grade water pump on the top of the fermentation tank 102, connect the water pump to pure water, and mix the pure water with lactic acid bacteria. The water pump is connected to the pumping tube 1052, so that the water mixed with lactic acid bacteria is transported by the water pump and then poured into the yogurt entering the fermentation tank 102 through the feed port 104 through the sampling port 2062. The rotational motion and reciprocating radial motion of the sampling cylinder 206 are combined to ensure that the lactic acid bacteria are fully mixed into the yogurt. In this process, the blocking ball 2066 is not located inside the sampling port 2062. The above process can also achieve flushing of the internal pipeline, which is convenient for keeping the pipeline clean.

[0034] In summary, the yogurt inside the fermentation tank 102 is mixed and stirred by the rotational motion and radial reciprocating motion of the sampling cylinder 206 inside the fermentation tank 102, and multi-point dynamic sampling is performed on areas at different heights inside the fermentation tank 102 through the sampling ports 2062 at different heights on the surface of the sampling cylinder 206 as the sampling cylinder 206 moves. The sampled yogurt sample enters the uniform cavity 2022 inside the storage cavity 202, so that the storage cavity 202 rotates with the sampling cylinder 206 to complete the uniform mixing of the multi-point sampled yogurt, thereby ensuring the diversity of the test samples and making the sampled samples more fully represent the quality of the yogurt at various positions inside the fermentation tank 102.

Claims

1. A quality inspection device for yogurt production, comprising: a production unit (1), wherein the production unit (1) comprises a fermentation tank (102) for fermenting yogurt, characterized in that: Also includes: A detection unit (2), wherein the side of the production unit (1) is provided with a detection unit (2); The detection unit (2) includes a hollow tube (201) rotatably arranged inside a fermentation tank (102), a storage chamber (202) for mixing and sampling yogurt is fixedly connected to the bottom of the hollow tube (201), a plurality of sampling cylinders (206) are movably arranged at the bottom of the storage chamber (202), the sampling cylinders (206) move back and forth radially inside the fermentation tank (102), and the sampling cylinders (206) rotate with the storage chamber (202), a plurality of sampling ports (2062) are opened on the side wall of the sampling cylinder (206), and the plurality of sampling ports (2062) opened on the side wall of the sampling cylinder (206) are all located at different heights, and the sampling cylinder (206) is connected to the storage chamber (202) through a hose (2021) at its top.

2. The yogurt production quality inspection device according to claim 1, wherein: The production unit (1) further comprises a rotary drive source (2012) mounted on the top of the fermentation tank (102), wherein the rotary drive source (2012) is connected to the hollow tube (201) via a transmission member (2011); A feed port (104) is provided on the side of the fermentation tank (102), and a discharge port (103) is provided on the bottom of the fermentation tank (102).

3. The yogurt production quality inspection device according to claim 2, wherein: The bottom of the storage chamber (202) is fixedly connected to an equipment chamber (203), and the equipment chamber (203) is fixedly connected to a fixed disk (204) via a fixed rod (2031) at its bottom. A control drive source (2032) is installed inside the equipment chamber (203), and an output shaft of the control drive source (2032) rotates through the equipment chamber (203) and the fixed disk (204) and is fixedly connected to a rotating disk (205).

4. The yogurt production quality inspection device according to claim 3, wherein: The surface of the fixed disk (204) is provided with a plurality of sliding straight grooves (2041), and the sliding straight grooves (2041) extend outward along the center of the fixed disk (204); the surface of the rotating disk (205) is provided with a plurality of sliding arc grooves (2051), and the plurality of sliding arc grooves (2051) are evenly distributed along the outer circumference of the rotating disk (205); The top of the sampling tube (206) is fixedly connected with a cannula (2067), and the cannula (2067) is movably arranged inside the sliding straight groove (2041) and the sliding arc groove (2051).

5. The yogurt production quality inspection device according to any one of claims 3-4, characterized in that: The outer side of the fixed disk (204) is fixedly connected to a plurality of folding plates (2042) along its circumferential direction. The folding plates (2042) are arranged between adjacent sampling cylinders (206). The bottom of the folding plates (2042) is arranged at the bottom end of the rotating disk (205) and extends toward the center of the rotating disk (205). The bottom of the folding plate (2042) is fixedly connected to an extension rod (2043), and a plurality of stirring blades (2044) are arranged at intervals on the surface of the extension rod (2043), and the stirring blades (2044) are arranged obliquely on the side of the extension rod (2043).

6. The yogurt production quality inspection device according to claim 5, characterized in that: The production unit (1) further comprises a pumping member (105) mounted on the top of the fermentation tank (102); the air inlet of the pumping member (105) is connected to a sampling bottle (1051) through a conduit; a pumping tube (1052) is connected to the side of the sampling bottle (1051); and the pumping tube (1052) is movably connected to the interior of the hollow tube (201).

7. The yogurt production quality inspection device according to claim 5, wherein: A uniform cavity (2022) is provided inside the storage cavity (202), and the uniform cavity (2022) is communicated with the pumping tube (1052) and the hose (2021) respectively, and a space exists between the bottom of the uniform cavity (2022) and the bottom of the pumping tube (1052).

8. The yogurt production quality inspection device according to claim 5, wherein: The sampling port (2062) is opened on the side wall of the sampling cylinder (206) in a position opposite to the direction in which the sampling port (2062) rotates inside the fermentation tank (102); The fixed disk (204) and the rotating disk (205) are rotatably arranged inside the fermentation tank (102), and a space for accommodating yogurt fermentation is provided at the bottom of the fixed disk (204) and the rotating disk (205).

9. The yogurt production quality inspection device according to claim 8, wherein: A polymer tube (2061) is provided inside the sampling cylinder (206), and a sampling port (2062) is connected to the side of the polymer tube (2061). The sampling port (2062) is connected to the hose (2021) through the polymer tube (2061).

10. The yogurt production quality inspection device according to claim 9, wherein: The inner ring of the sampling port (2062) is provided with a blocking block (2063), the surface of the blocking block (2063) is installed with an elastic member (2064), the inner part of the sampling port (2062) is provided with a blocking ball (2066) for movement, the surface of the blocking ball (2066) is wrapped with a silicone layer, the middle ring of the blocking ball (2066) is provided with a collar (2065), the collar (2065) is fixedly connected to the blocking block (2063) through the elastic member (2064), and the blocking ball (2066) is in contact with and sealed with a groove on the surface of the blocking block (2063).

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