Fermentation slurry sampling device and system

Abstract

The utility model relates to the technical field of fermentation agent production, especially a kind of fermentation bacteria mud sample dividing device and system, fermentation bacteria mud sample dividing device includes sample dividing chamber, emulsion tank, agitator, rotor pump and CIP component, and disinfection equipment is equipped in sample dividing chamber inside;Emulsion tank is connected with bacteria mud feed pipe, protective agent feed pipe and discharge pipe, and the output end of discharge pipe is located in sample dividing chamber, and the output end of discharge pipe is equipped with sampling valve;Agitator is located in emulsion tank;Rotor pump is located in discharge pipe, to drive material to move along discharge pipe.This device eliminates freeze-drying step, can shorten the production cycle of fermentation agent, save energy, reduce production cost, while maximum degree maintains the fermentation activity of bacteria body, and the whole process of wet bacteria mud from entering emulsion tank to completing sample dividing filling is in high cleanliness environment, can greatly reduce the probability of miscellaneous bacteria pollution.

Description

Technical Field

[0001] This utility model relates to the field of fermentation agent production technology, and in particular to a fermentation sludge sampling device and system. Background Technology

[0002] In the production and processing of fermented foods, starter cultures are commonly used materials. Especially for fermented dairy products, to ensure the stability of fermentation time, flavor, and other quality aspects during fermentation, it is necessary to select starter cultures with better fermentation activity and more stable quality. Currently, most commonly used starter cultures are freeze-dried bacterial powders, which need to be dissolved and activated with sterile water before use. After complete dissolution, they are added to the working solution, stirred evenly, and then fermentation and cultivation begin. This process is complex, and there is a high risk of contamination during the dissolution and activation process.

[0003] The common production process of fermentation agents is: centrifugation of fermentation broth → bacterial sludge → emulsification → freeze drying → bacterial powder. This process has the following problems: the entire production process, especially the freeze drying stage, has a long production cycle, very high energy consumption, high cleaning costs, and will also cause the death of a large number of bacteria, reducing the fermentation activity of the bacteria, thus resulting in low fermentation activity of the fermentation agent.

[0004] In response, during internal discussions, the applicant believed that the above-mentioned production process could be improved to solve at least some of the problems. One improvement is to omit the freeze-drying step and directly sample and fill the wet bacterial sludge, thereby shortening the production cycle, saving energy, reducing production costs, and maximizing the preservation of bacterial fermentation activity.

[0005] However, the process of separating and filling wet bacterial sludge requires a high degree of cleanliness, and such equipment is currently lacking. Utility Model Content

[0006] This invention provides a fermentation sludge sampling device and system, which aims to meet the needs of sampling and filling wet sludge.

[0007] In a first aspect, this utility model provides a fermentation sludge sampling device, comprising: The sample separation room is equipped with disinfection equipment. The emulsification tank is connected to a sludge feed pipe, a preservative feed pipe, and a discharge pipe. The output end of the discharge pipe is located in the sample distribution chamber, and a sampling valve is provided at the output end of the discharge pipe. A stirrer is provided inside the emulsification tank; A rotary pump, located in the discharge pipe, is used to drive the material to move along the discharge pipe; The CIP assembly includes a CIP workstation, a sprayer, a first outlet pipe, and a first return pipe. The sprayer is located inside the emulsification tank. The first outlet pipe connects the CIP workstation and the sprayer, and the first return pipe connects the emulsification tank and the CIP workstation.

[0008] In some embodiments, the discharge pipe includes a first pipe section and a second pipe section, and a diverting valve is provided between the first pipe section and the second pipe section. One end of the first return pipe is connected to the diverting valve, and the other end is connected to the CIP workstation. The diverting valve can switch between a first state and a second state. In the first state, the first pipe section is connected to the second pipe section. In the second state, the first pipe section is connected to the first return pipe.

[0009] In some embodiments, the CIP assembly further includes a second outlet pipe and a second return pipe. One end of the second outlet pipe is connected to the discharge pipe and is provided with a first shut-off valve, and the other end is connected to the CIP workstation. One end of the second return pipe is detachably connected to the output end of the discharge pipe, and the other end is connected to the CIP workstation.

[0010] In some embodiments, the second return pipe includes a solid section and a flexible section, one end of the solid section is connected to the CIP workstation, and the other end is used to connect to the flexible section; the flexible section is detachably disposed between the solid section and the discharge pipe.

[0011] In some embodiments, the fermentation sludge sampling device further includes a SIP component, which includes a SIP workstation and a steam pipe, the steam pipe being connected to the SIP workstation and the emulsification tank.

[0012] In some embodiments, the SIP assembly further includes a drain pipe, one end of which is connected to the discharge pipe and is provided with a second shut-off valve.

[0013] In some embodiments, the disinfection device includes an ultraviolet lamp and an ozone generator.

[0014] In some embodiments, the sampling chamber is further provided with a protective cover, and the sampling valve is located inside the protective cover.

[0015] In a second aspect, the present invention provides a fermentation sludge sampling system, comprising the fermentation sludge sampling device as described above, wherein the sludge feed pipe injects wet sludge into the emulsification tank, the preservative feed pipe injects preservative into the emulsification tank, the agitator mixes the wet sludge and the preservative, and the rotor pump moves the mixed material along the discharge pipe to the output end of the discharge pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The fermentation sludge sampling device provided by this utility model can disinfect and sterilize the sampling chamber, improving its internal cleanliness. The wet sludge can enter the emulsification tank along the sludge feed pipe, and the preservative can enter the emulsification tank along the preservative feed pipe. The wet sludge and preservative are mixed by a stirrer to obtain a mixture. Driven by a rotor pump, the mixture can move along the discharge pipe to the output end of the discharge pipe located in the sampling chamber. Then, the mixture can be sampled and filled by repeatedly opening and closing the sampling valve. The entire process of the wet sludge from entering the emulsification tank to completing the sampling and filling is in a high-cleanliness environment, which can significantly reduce the probability of contamination by miscellaneous bacteria. This device eliminates the freeze-drying step, which can shorten the production cycle of the fermentation agent, save energy, reduce production costs, and at the same time maximize the fermentation activity of the bacteria.

[0017] 2. By setting up CIP components, dirt and residues can be removed by the flow of cleaning fluid inside the pipes and tanks without disassembling the equipment, providing a high-cleanliness environment for the sample filling of wet sludge. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the fermentation sludge sampling device described in an embodiment of this utility model.

[0019] Figure 2 This is a schematic diagram of the sample filling process of the fermentation sludge sampler described in this embodiment of the utility model.

[0020] Figure 3 This is a schematic diagram of the CIP process (cleaning emulsification tank) of the fermentation sludge sampling device described in this embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the CIP process (cleaning discharge pipe) of the fermentation sludge sampling device described in this embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the SIP process of the fermentation sludge sampling device described in an embodiment of this utility model.

[0023] Marked in the image: 1-Sample separation room; 11-Ultraviolet lamp; 12-Ozone generator; 13-Protective cover; 14-Perforated stainless steel platform; 2-Emulsifying tank; 21-Inoculum inlet pipe; 22-Preservative inlet pipe; 23-Outlet pipe; 231-First pipe section; 232-Second pipe section; 24-Sampling valve; 25-Diverting valve; 26-Third shut-off valve; 3-Agitator; 4-Driver; 5-Rotor pump; 6-CIP components; 61-CIP workstation; 62-Sprayer; 63-First outlet pipe; 64-First return pipe; 65-Second outlet pipe; 66-Second return pipe; 661-Fixed pipe section; 662-Flexible pipe section; 67-First shut-off valve; 68-Outgoing pump; 69-Return pump; 7-SIP components; 71 - SIP workstation; 72 - Steam piping; 8-Drainage pipe; 81 - Second shut-off valve. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0025] Unless otherwise specified, the use of terms such as "upper," "lower," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the use of the term "vertical" does not imply that the corresponding device / component / element must be absolutely vertical. A slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. Alternatively, it can be simplified to mean that the corresponding device / component / element, when positioned in a "vertical" direction, can have an error / deviation of ±10% relative to that direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element remains within the error / deviation range and still fulfills its function in this invention, it is acceptable.

[0027] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0028] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. They can be any number, such as two, three, four, five, six, seven, eight, nine, or even more than nine.

[0029] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connected," "linked," "provided with," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0030] During internal discussions, the applicant believed that the common production process of the fermentation agent could be improved. One improvement method is to eliminate the freeze-drying step and directly sample and fill the wet bacterial sludge, thereby shortening the production cycle, saving energy, reducing production costs, and maximizing the fermentation activity of the bacteria.

[0031] However, the process of separating and filling wet bacterial sludge requires a high degree of cleanliness, and such equipment is currently lacking.

[0032] This application is described below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] The first aspect of this utility model provides a fermentation sludge sampling device, including a sampling chamber 1, an emulsification tank 2, a stirrer 3, and a rotor pump 5.

[0034] Combination Figure 1 The sample distribution chamber 1 is equipped with a disinfection device. The emulsification tank 2 is connected to a sludge feed pipe 21, a preservative feed pipe 22, and a discharge pipe 23. The output end of the discharge pipe 23 is located inside the sample distribution chamber 1, and a sampling valve 24 is provided at the output end of the discharge pipe 23. The agitator 3 is located inside the emulsification tank 2, and the rotor pump 5 is located at the discharge pipe 23 to drive the material to move along the discharge pipe 23.

[0035] The sampling chamber 1 is a functional room that has undergone strict disinfection and air purification treatment. The emulsification tank 2 is a sealed tank. Wet bacterial sludge can enter the emulsification tank 2 through the bacterial sludge inlet pipe 21, and the preservative can enter the emulsification tank 2 through the preservative inlet pipe 22. The wet bacterial sludge and the preservative are mixed by the agitator 3 to obtain a mixture. Driven by the rotor pump 5, the mixture can move along the discharge pipe 23 to the output end of the discharge pipe 23 located in the sampling chamber 1. The output end is equipped with a sampling valve 24, which can be repeatedly opened and closed to achieve the sampling and filling of the mixture. Figure 2 As shown, Figure 2 The thick lines and arrows in the diagram indicate the direction of the material. The wet bacterial sludge is kept in a high-cleanliness environment from the moment it enters the emulsification tank 2 until it is sampled and filled. This can significantly reduce the probability of contamination by other microorganisms. This device eliminates the freeze-drying step, which can shorten the production cycle of the fermenting agent, save energy, reduce production costs, and at the same time maintain the fermentation activity of the microorganisms to the greatest extent.

[0036] Wet sludge refers to sludge that has not been freeze-dried and can be obtained directly from a centrifuge, meaning the sludge feed pipe 21 can be connected to a centrifuge. Protectants are auxiliary additives used to maintain the activity of the sludge and reduce damage to the microorganisms, such as at least one of skim milk powder, trehalose, and monosodium glutamate.

[0037] The sludge inlet pipe 21, the preservative inlet pipe 22, and the outlet pipe 23 are sealed pipes connecting the various components. They can all be made of 304 or 316L stainless steel. The inner walls of these pipes can be polished to improve their smoothness and reduce sludge adhesion; for example, they can be polished to a sanitary grade with Ra ≤ 0.8 μm, where Ra is a surface roughness evaluation parameter. Shut-off valves can be installed on each pipe to control the opening and closing of the pipes; these shut-off valves can be, for example, sanitary diaphragm valves. The pipes described below can also adopt the same structure and treatment as described above.

[0038] The output end of the discharge pipe 23 refers to the pipe end of the discharge pipe 23 that supplies the bacterial sludge / mixed material during the sample separation operation. This output end is located in the high-cleanliness sample separation room 1, which can greatly reduce the probability of contamination by miscellaneous bacteria during the sample separation process.

[0039] The disinfection equipment is used to disinfect and sterilize the interior space of the sample distribution room 1, thereby improving the cleanliness of the interior space and reducing the probability of contamination by miscellaneous bacteria during the sample distribution and filling process of wet bacterial sludge / mixed materials. The disinfection equipment may include an ultraviolet lamp 11 and an ozone generator 12. The ultraviolet lamp 11 refers to a lamp or light source that emits ultraviolet light, which can disinfect and sterilize the interior space of the sample distribution room 1. The ultraviolet lamp 11 can be installed on the inner ceiling wall of the sample distribution room 1. The ozone generator 12 refers to a device that can artificially generate ozone, for example, by converting oxygen in the air into ozone through electricity or ultraviolet light. The strong oxidizing properties of ozone are used to disinfect, deodorize, and purify the sample distribution room 1.

[0040] Optionally, the internal space of the sampling chamber 1 can accommodate operators, allowing them to enter the sampling chamber 1 to perform sampling and filling operations. Sampling and filling refers to dividing a large amount of fungal sludge into several small portions and placing each small portion into containers such as cans, bottles, or aluminum foil bags for storage. The operation method can be as follows: the operator first moves the container to the sampling port of the sampling valve 24, then opens the sampling valve 24 to allow the fungal sludge / mixed material to flow out and fall into the container, then closes the sampling valve 24, and finally seals the container; this process can be repeated multiple times to obtain multiple containers containing fungal sludge / mixed material.

[0041] The sampling valve 24 is a valve used to extract samples from pipelines, storage tanks, or reaction vessels. Industrially, it can be a plunger, piston, or needle type. Exemplarily, the sampling valve 24 includes two ports for connection to a pipeline and a sampling port located between the two ports. One port can be connected to the output end of the discharge pipe 23, and the other port can be sealed by a plug, such as a blind flange. During sampling, the operator repeatedly opens and closes the sampling valve 24 to allow the bacterial sludge / mixture to flow out of the sampling port to complete the sampling.

[0042] Optionally, a protective cover 13 is also provided in the sample distribution chamber 1, and the sampling valve 24 is located inside the protective cover 13 to further reduce the probability of contamination by miscellaneous bacteria during the sample distribution process. The protective cover 13 can be truncated cone-shaped, with its large end facing down and its small end surrounding the outside of the output end of the discharge pipe 23. The sampling valve 24 can be located within the space enclosed by the protective cover 13, thereby playing a role in dust prevention and pollution prevention through the protective cover 13.

[0043] The agitator 3 is a device that mixes materials by rotation. The agitator 3 can be a frame agitator, with its main body being a plate-shaped body extending into the emulsification tank 2. This plate-shaped body can be vertically arranged and rotate around a vertical axis to mix the wet bacterial sludge and the preservative. The plate-shaped body can be connected to a stirring shaft, part of which extends out of the emulsification tank 2 and is connected to a driver 4. The driver 4, for example, is a three-phase asynchronous motor, used to drive the stirring shaft to rotate and thus rotate the plate-shaped body. Exemplarily, the lower end of the stirring shaft is connected to the plate-shaped body, and the upper end passes through the top wall of the emulsification tank 2. The driver 4 is connected to the portion of the stirring shaft extending out of the emulsification tank 2.

[0044] Rotary pump 5 is a type of positive displacement pump that relies on the change in sealed volume formed by one or more pairs of synchronously rotating rotors inside the pump casing to transport materials, thereby driving the materials to move along the discharge pipe 23. The connection between rotary pump 5 and discharge pipe 23 can be as follows: the discharge pipe 23 is divided into two sections at the installation position of rotary pump 5. The front section is connected to the inlet of rotary pump 5, and the rear section is connected to the outlet of rotary pump 5. The bacterial sludge / mixed material flows into rotary pump 5 from the front section and then into the rear section. The other end of the front section can be connected to emulsification tank 2, and the other end of the rear section can extend into the sample distribution chamber 1 as the output end of discharge pipe 23.

[0045] It is understood that the fermentation sludge sampling device described in this application has high requirements for cleanliness and needs to be cleaned as soon as possible after use.

[0046] To achieve cleaning, the fermentation sludge sampling device also includes a CIP component 6, which is used to perform CIP (Clean-in-Place) cleaning on the device. This means that without disassembling the equipment, dirt and residue are removed by the flow of cleaning fluid inside the pipes and tanks.

[0047] In some embodiments, combined with Figure 1 The CIP component 6 includes a CIP workstation 61, a sprayer 62, a first outlet pipe 63, and a first return pipe 64. The sprayer 62 is located inside the emulsification tank 2. The first outlet pipe 63 connects the CIP workstation 61 and the sprayer 62. The first return pipe 64 connects the emulsification tank 2 and the CIP workstation 61.

[0048] In the above structure, the first outlet pipe 63 can be connected to the cleaning fluid output port of the CIP workstation 61, and one end of the first return pipe 64 can be connected to the bottom of the emulsification tank 2, and the other end can be connected to the input port of the CIP workstation 61. The cleaning fluid is, for example, water, acid, alkali, disinfectant, etc. The cleaning fluid flows from the output port of the CIP workstation 61 along the first outlet pipe 63 to the sprayer 62, and then is sprayed out from the sprayer 62 to spray onto the inner wall of the emulsification tank 2. Then, the cleaning fluid flows to the bottom of the emulsification tank 2 and flows back to the CIP workstation 61 along the first return pipe 64. Figure 3 As shown, Figure 3 The thick lines and arrows indicate the direction of the cleaning fluid; continue the above steps to complete the internal cleaning of emulsification tank 2.

[0049] CIP workstation 61 is the main body of CIP and may include components such as a cleaning fluid storage tank, a recovery fluid storage tank, and a transfer pump. The transfer pump pumps the cleaning fluid from the storage tank to the pipes or tanks to be cleaned. The cleaning fluid in the pipes or tanks can flow into the recovery fluid storage tank for recycling under the action of another transfer pump. For example, CIP may include pre-rinsing, alkaline washing, intermediate rinsing, acid washing, and final rinsing. The cleaning fluid for pre-rinsing, intermediate rinsing, and final rinsing can be clean water; the cleaning fluid for alkaline washing can be sodium hydroxide solution; and the cleaning fluid for acid washing can be dilute nitric acid or phosphoric acid.

[0050] The sprayer 62 is used to evenly distribute the cleaning solution onto the inner wall of the emulsification tank 2 for thorough cleaning. The cleaning solution can be pressurized before being output from the sprayer 62 to form multiple high-speed jets arranged circumferentially. The impact force of the jets is used to peel off attached dirt, residues, and microorganisms. Optionally, some nozzles on the sprayer 62 face the top wall of the emulsification tank 2. Optionally, the sprayer 62 is a rotating spray ball, which is a rotatable cleaning sprayer. Rotation can increase the circumferential coverage of the cleaning solution and reduce dead zones. Furthermore, the rotating spray ball is driven by recoil force. When the cleaning solution is sprayed from the eccentric nozzle or oblique hole of the spray head, a reverse thrust is generated, which pushes the ball to rotate.

[0051] The first outlet pipe 63 and the first return pipe 64 can be the pipe structures described above. To promote the flow of cleaning fluid along the first return pipe 64, a return pump 69 can be installed on the first return pipe 64. The return pump 69 can be a positive displacement pump, such as a rotary pump.

[0052] Optionally, combined Figure 1 The discharge pipe 23 includes a first pipe section 231 and a second pipe section 232. A diverting valve 25 is provided between the first pipe section 231 and the second pipe section 232. The first return pipe 64 is connected to the diverting valve 25. The diverting valve 25 can switch between a first state and a second state. In the first state, the first pipe section 231 is connected to the second pipe section 232. In the second state, the first pipe section 231 is connected to the first return pipe 64.

[0053] The first pipe section 231 and the second pipe section 232 here both belong to the front pipe section mentioned above, that is, the pipe section located between the rotor pump 5 and the emulsifying tank 2. For example, one end of the first pipe section 231 is connected to the emulsifying tank 2 and the other end is connected to the diverting valve 25. One end of the second pipe section 232 is connected to the diverting valve 25 and the other end is connected to the rotor pump 5. One end of the first return pipe 64 is connected to the diverting valve 25 and the other end is connected to the input port of the CIP workstation 61. In this way, by adjusting the diverting valve 25 to change its internal passage, different external passages can be formed for different operations. For example, in the first state, the first pipe section 231 and the second pipe section 232 are connected, and sample filling can be performed. In the second state, the first pipe section 231 is connected to the first return pipe 64, and CIP can be performed. By adopting this connection method, under the condition that the first return pipe 64 is connected to the emulsification tank 2, the bottom opening of the emulsification tank 2 and the sanitary dead corners formed by the opening can be reduced. The cleaning liquid and the bacterial mud / mixed material flow out from the same opening, which can reduce sanitary dead corners and achieve more thorough cleaning.

[0054] The diverting valve 25, also known as a reversing valve, can be used to change the flow direction of the medium in the pipeline, thereby switching the flow direction, such as switching the flow direction from the first pipe section 231 to the second pipe section 232, to the first pipe section 231 to the first return pipe 64; the diverting valve 25 is, for example, a three-way ball valve.

[0055] In some embodiments, combined with Figure 1 The CIP assembly 6 also includes a second outlet pipe 65 and a second return pipe 66. One end of the second outlet pipe 65 is connected to the discharge pipe 23 and is provided with a first shut-off valve 67, and the other end is connected to the CIP workstation 61. One end of the second return pipe 66 is detachably connected to the output end of the discharge pipe 23, and the other end is connected to the CIP workstation 61.

[0056] In the above structure, one end of the second outlet pipe 65 is connected to the outlet pipe 23, and this end is equipped with a first shut-off valve 67. The other end is connected to the output port of the CIP workstation 61 to receive cleaning fluid. The first shut-off valve 67 is used to adjust the opening and closing of the second outlet pipe 65. For example, when the first shut-off valve 67 is open, the cleaning fluid can flow from the second outlet pipe 65 into the outlet pipe 23. When the first shut-off valve 67 is closed, the cleaning fluid is blocked at the end of the second outlet pipe 65. One end of the second return pipe 66 is detachably connected to the output end of the outlet pipe 23, and the other end is connected to the input port of the CIP workstation 61. During cleaning, the second return pipe 66 is connected to the output end of the outlet pipe 23, and the cleaning fluid can flow from the output end of the outlet pipe 23 into the second return pipe 66, and then flow back to the CIP workstation 61. Figure 4 As shown, Figure 4 The thick lines and arrows in the text indicate the direction of the cleaning fluid; during the sample filling process, the second return pipe 66 is separated from or not connected to the output end of the discharge pipe 23, and the operator performs sample filling from the sampling port of the sampling valve 24.

[0057] Specifically, in combination Figure 1 The second outlet pipe 65 can be connected to the outlet pipe 23 section between the diverting valve 25 and the emulsifying tank 2. In this way, the diverting valve 25 can be switched first to connect the first pipe section 231 with the first return pipe 64 for cleaning the emulsifying tank 2, and then the diverting valve 25 can be switched to connect the first pipe section 231 with the second pipe section 232 for cleaning the outlet pipe 23, thereby completing the full path cleaning of the outlet pipe and reducing sanitary dead corners.

[0058] The second outlet pipe 65 and the second return pipe 66 can be the pipe structure described above. To promote the flow of cleaning fluid along the second outlet pipe 65, a return pump 68 is provided on the second outlet pipe 65. The return pump 68 can be a positive displacement pump, such as a rotary pump.

[0059] In one alternative embodiment, a shut-off valve is connected to another port of the sampling valve 24. The end of the shut-off valve away from the sampling valve 24 is connected to the second return pipe 66. By adjusting the opening and closing state of the shut-off valve, the connection state between the second return pipe 66 and the discharge pipe 23 can be changed, thereby achieving detachable connection.

[0060] In another alternative, the second return pipe 66 is detachably connected to the other port of the sampling valve 24, and the detachable connection is achieved through physical disassembly; when the other port of the sampling valve 24 is not connected to the second return pipe 66, the port is sealed by a plug or a shut-off valve.

[0061] Optionally, the second return pipe 66 includes a fixed pipe section 661 and a flexible pipe section 662. One end of the fixed pipe section 661 is connected to the CIP workstation 61, and the other end is used to connect to the flexible pipe section 662. The flexible pipe section 662 is detachably located between the fixed pipe section 661 and the discharge pipe 23.

[0062] The fixed pipe section 661 can be fixedly installed, with one part located inside the sample distribution chamber 1 and the other part located outside the sample distribution chamber 1 and connected to the CIP workstation 61; the movable pipe section 662 can be a shorter pipe section for easy installation and removal by operators. One end of the movable pipe section 662 can be detachably connected to the fixed pipe section 661, and the other end can be detachably connected to the discharge pipe 23 or the sampling valve 24. In this way, the connection state between the second return pipe 66 and the discharge pipe 23 can be switched by installing and removing the movable pipe section 662, which simplifies the operation. Figure 1 As shown, Figure 1 The central connecting pipe section 662 is shown with a dashed line.

[0063] Optionally, a third shut-off valve 26 is provided at the end of the discharge pipe 23 adjacent to the emulsification tank 2. The third shut-off valve 26 is used to control the communication between the emulsification tank 2 and the discharge pipe 23. The third shut-off valve 26 can be opened after the wet bacterial sludge and the preservative are mixed evenly to allow the mixture to move along the discharge pipe 23. When cleaning the discharge pipe 23, the third shut-off valve 26 can be closed to prevent the cleaning liquid from flowing into the emulsification tank 2.

[0064] To achieve sterilization, the fermentation sludge sampling device also includes a SIP component 7, which is used to perform SIP (in-situ sterilization) on the device, that is, without dismantling the equipment, by injecting steam into the pipes and tanks to kill most of the bacteria.

[0065] In some embodiments, combined with Figure 1 The SIP assembly 7 includes a SIP workstation 71 and a steam pipe 72, which connects the SIP workstation 71 and the emulsification tank 2.

[0066] In the above structure, the SIP workstation 71 is the main body of the SIP system, primarily including a steam generator. The steam pipe 72 can be the pipe structure described above, with one end connected to the SIP workstation 71 and the other end connected to the emulsifying tank 2. The steam emitted by the SIP workstation 71 can enter the emulsifying tank 2 along the steam pipe 72, then move along the discharge pipe 23 to the sampling valve 24, and be discharged from the sampling port of the sampling valve 24. Figure 5 As shown, Figure 5 The thick lines and arrows indicate the direction of steam, which allows for sterilization of the entire flow path of the bacterial sludge / mixture, reducing the probability of contamination by other microorganisms during the sampling process.

[0067] Optionally, the SIP assembly 7 also includes a drain pipe 8, one end of which is connected to the discharge pipe 23 and is equipped with a second shut-off valve 81. The drain pipe 8 is used to discharge condensate after steam cooling. Specifically, in conjunction with Figure 1 One end of the drain pipe 8 is connected to the lower section of the discharge pipe 23 so that most of the condensate can flow into the drain pipe 8 naturally under gravity. For example, one end of the drain pipe 8 is connected to the discharge pipe 23 section between the emulsifying tank 2 and the rotor pump 5, and the other end can be connected to the wastewater treatment system. After SIP is completed, the condensate in the emulsifying tank 2 can be discharged by opening the second shut-off valve 81. During sample filling, the second shut-off valve 81 is in the closed state.

[0068] During sterilization, the sludge feed pipe 21 and the preservative feed pipe 22 can be connected to the SIP workstation 71 respectively, and the sludge feed pipe 21 and the preservative feed pipe 22 can be sterilized by steam; or, other equipment can be used to sterilize the sludge feed pipe 21 and the preservative feed pipe 22.

[0069] Optionally, a perforated stainless steel platform 14 is provided at the bottom of the sample chamber 1. The perforated stainless steel platform 14 is spaced apart from the bottom surface of the sample chamber 1. The condensate after steam cooling can pass through the holes of the perforated stainless steel platform 14, which helps to improve the dryness and cleanliness of the sample chamber 1.

[0070] A second aspect of this utility model provides a fermentation sludge sampling system, including the fermentation sludge sampling device described above.

[0071] In some embodiments, the sludge feed pipe 21 is connected to a centrifuge, and the preservative feed pipe 22 is connected to a preservative tank. The wet sludge separated by the centrifuge enters the emulsification tank 2 along the sludge feed pipe 21, and the preservative enters the emulsification tank 2 along the preservative feed pipe 22. After the wet sludge and preservative are evenly mixed by the agitator 3 in the emulsification tank 2, the mixed material is moved to the output end of the discharge pipe 23 by the rotor pump 5. The operator performs sample filling by repeatedly opening and closing the sampling valve 24.

[0072] A centrifuge is a device that uses centrifugal force generated by high-speed rotation to separate bacterial sludge; a preservative tank is a container filled with a preservative.

[0073] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fermentation sludge sampling device, characterized in that, include: The sample sorting room (1) is equipped with disinfection equipment. Emulsification tank (2) is connected to a sludge feed pipe (21), a preservative feed pipe (22) and a discharge pipe (23). The output end of the discharge pipe (23) is located in the sample distribution chamber (1). The output end of the discharge pipe (23) is equipped with a sampling valve (24). A stirrer (3) is located inside the emulsification tank (2); A rotor pump (5) is installed in the discharge pipe (23) to drive the material to move along the discharge pipe (23); The CIP assembly (6) includes a CIP workstation (61), a sprayer (62), a first outlet pipe (63) and a first return pipe (64). The sprayer (62) is located inside the emulsification tank (2). The first outlet pipe (63) connects the CIP workstation (61) and the sprayer (62). The first return pipe (64) connects the emulsification tank (2) and the CIP workstation (61).

2. The fermentation sludge sampling device according to claim 1, characterized in that, The discharge pipe (23) includes a first pipe section (231) and a second pipe section (232). A diverting valve (25) is provided between the first pipe section (231) and the second pipe section (232). One end of the first return pipe (64) is connected to the diverting valve (25), and the other end is connected to the CIP workstation (61). The diverting valve (25) can switch between a first state and a second state. In the first state, the first pipe section (231) is connected to the second pipe section (232). In the second state, the first pipe section (231) is connected to the first return pipe (64).

3. The fermentation sludge sampling device according to claim 1, characterized in that, The CIP assembly (6) further includes a second outlet pipe (65) and a second return pipe (66). One end of the second outlet pipe (65) is connected to the discharge pipe (23) and is provided with a first shut-off valve (67), and the other end is connected to the CIP workstation (61). One end of the second return pipe (66) is detachably connected to the output end of the discharge pipe (23), and the other end is connected to the CIP workstation (61).

4. The fermentation sludge sampling device according to claim 3, characterized in that, The second return pipe (66) includes a fixed pipe section (661) and a movable pipe section (662). One end of the fixed pipe section (661) is connected to the CIP workstation (61), and the other end is used to connect to the movable pipe section (662). The movable pipe section (662) is detachably located between the fixed pipe section (661) and the discharge pipe (23).

5. The fermentation sludge sampling device according to claim 1, characterized in that, It also includes a SIP assembly (7), which includes a SIP workstation (71) and a steam pipe (72) that connects the SIP workstation (71) and the emulsifying tank (2).

6. The fermentation sludge sampling device according to claim 5, characterized in that, The SIP assembly (7) also includes a drain pipe (8), one end of which is connected to the discharge pipe (23) and is provided with a second shut-off valve (81).

7. The fermentation sludge sampling device according to any one of claims 1-6, characterized in that, The disinfection equipment includes an ultraviolet lamp (11) and an ozone generator (12).

8. The fermentation sludge sampling device according to any one of claims 1-6, characterized in that, The sampling chamber (1) is also equipped with a protective cover (13), and the sampling valve (24) is located inside the protective cover (13).

9. A fermentation sludge sampling system, characterized in that, The fermentation sludge sampling device includes any one of claims 1-8, wherein the sludge feed pipe (21) injects wet sludge into the emulsification tank (2), the preservative feed pipe (22) injects preservative into the emulsification tank (2), the agitator (3) mixes the wet sludge and the preservative, and the rotor pump (5) moves the mixed material along the discharge pipe (23) to the output end of the discharge pipe (23).

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