Sterilization and concentration equipment and working method thereof

Abstract

The invention discloses sterilization and concentration equipment and a working method for the sterilization and concentration equipment, and the sterilization and concentration equipment comprises a heat exchange sleeve, a material circulating system, a medium circulating system, a steam regulating valve, a material output pipe, a material temperature measuring element and a temperature regulating central module, the sterilization and concentration equipment disclosed by the invention realizes online heating, sterilization and concentration processing and self-cleaning, does not need to manually and frequently disassemble and wash a heat exchange sleeve and a medium circulation system, improves the automation degree and the production efficiency, and meanwhile, utilizes the temperature regulation central module to convey materials meeting the temperature standard to the next process, so that the production efficiency is improved. The materials which do not meet the temperature standard reflow again and are subsequently heated and concentrated, so that the qualification rate of the materials is increased.

Description

Technical Field

[0001] The invention relates to the field of industrial jam production equipment, in particular to a sterilization and concentration device. Background Art

[0002] The tubular sterilizer kills bacteria in the material by heating the casing with steam to a high temperature. It is mainly used for sterilization and cooling of various concentrated fruit pulps and various sauces. For example, the utility model with application number CN202123389000.X discloses a multiple concentration system for jam, which sterilizes and concentrates the jam by high-temperature concentration to increase its viscosity. However, the existing tubular sterilizer usually adopts manual control equipment and steam heating. When the steam pressure is unstable, the lag of manual operation will affect the control accuracy of the sterilization temperature, making it difficult to meet the more stringent sterilization time process requirements for jam processing. At the same time, after a long period of processing, a large amount of residual material will remain in the inner tube of the tubular heat exchanger, affecting subsequent processing, and manual shutdown and cleaning are required to continue working. The above shortcomings greatly reduce the working efficiency of the sterilization and concentration system. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a sterilization and concentration device that can realize production and cleaning online, improve the degree of automation, and improve production efficiency.

[0004] The present invention also provides a working method for the above-mentioned sterilization and concentration equipment.

[0005] The sterilization and concentration device according to the first embodiment of the present invention comprises: A heat exchange sleeve, comprising an outer tube and an inner tube, wherein the outer tube has a first end and a second end, and the inner tube has a third end and a fourth end; A material circulation system, comprising a material feed pipe, a material discharge pipe and a material return pipe, wherein the material discharge pipe and the material return pipe are respectively connected to the third end and the fourth end, so that the material can circulate in the material circulation system; A medium circulation system, comprising a medium feed pipe, a first medium discharge pipe, a second medium discharge pipe and a medium return pipe, wherein the medium feed pipe is connected to a high-temperature steam source and a clean medium source through a third three-way valve, wherein the first medium discharge pipe and the second medium discharge pipe are connected to the first end and the fourth end respectively, and the medium return pipe is connected to the second end and the third end through a second three-way valve; A steam regulating valve is arranged on the first medium discharge pipe, and the steam regulating valve is used to control the flow rate of high-temperature steam in the first medium discharge pipe; A material output pipe connected to the fourth end, a first three-way valve being provided between the material output pipe, the inner pipe and the material return pipe; a material temperature measuring element, disposed on the fourth end, and used to measure the temperature of the material flowing out of the fourth end; The temperature regulating central module is electrically connected to the material temperature measuring element, the first three-way valve and the steam regulating valve. The temperature regulating central module is used to receive temperature data from the material temperature measuring element, and to control the switching of the first three-way valve, and to control the output flow of the steam regulating valve.

[0006] The sterilization and concentration device according to the embodiment of the present invention has at least the following beneficial effects: 1. Realize heating sterilization, concentration processing and self-cleaning online, without the need for frequent manual disassembly and cleaning of the heat exchange sleeve and the medium circulation system, thus improving the degree of automation and production efficiency; 2. The temperature regulating central module is used to transport materials that meet the temperature standards to the next process, while materials that do not meet the temperature standards are recirculated and subsequently heated and concentrated to improve the qualified rate of the materials.

[0007] According to some embodiments of the present invention, the material circulation system also includes a material tank, the material feed pipe and the material return pipe are arranged above the material tank, the material discharge pipe is arranged on the material tank and the material return pipe is arranged on the material tank, the material discharge pipe is provided with a material pump, and the material tank is provided with a stirring mechanism for mixing materials.

[0008] According to some embodiments of the present invention, the side wall of the material tank is a double-layer structure and is provided with an interlayer space, in which a coiled heating tube is built in, the interlayer space is filled with a heat-conducting medium, and an ultraviolet sterilization lamp is provided on the top of the material tank.

[0009] According to some embodiments of the present invention, the stirring mechanism comprises: A rotating shaft is rotatably inserted in the middle of the material tank, and the rotating shaft is connected to a driving motor, and the driving motor is used to drive the rotating shaft to pivot; A first stirring blade is anchor-shaped, the first stirring blade is fixedly connected to the rotating shaft, the outer side of the first stirring blade is arranged parallel to the inner side wall of the material tank, a first scraper is arranged on the outer side of the first stirring blade, the first scraper is abutted against the inner side wall of the material tank, and the length of the first scraper is equal to the length of the inner side wall of the material tank; The second stirring blade is fixedly connected to the shaft body of the rotating shaft, and the second stirring blade extends outwardly and downwardly from the shaft body of the rotating shaft.

[0010] According to some embodiments of the present invention, a conical guide portion is provided at the bottom of the material tank, a second scraper is provided at the outer side of the bent portion at the bottom of the first stirring blade, and the second scraper is in abutment with the inner side wall of the guide portion.

[0011] According to some embodiments of the present invention, the medium circulation system also includes a medium tank and a heat exchanger, the medium feed pipe and the medium return pipe are arranged above the medium tank, the first medium discharge pipe and the second medium discharge pipe are arranged below the medium tank, the first medium discharge pipe is provided with a medium pump, the second medium discharge pipe is provided with a cleaning pump, the heat exchanger is arranged on the medium return pipe, and the medium tank is provided with a filtering mechanism.

[0012] According to some embodiments of the present invention, the filtering mechanism comprises: A plurality of filter screens are provided, and the plurality of filter screens are arranged in the medium tank at intervals along the vertical direction; A scraper plate is attached to the upper surface of the filter screen, one end of the scraper plate is rotatably connected to the center position of the filter screen, and the other end is attached to the inner wall surface of the medium tank.

[0013] According to some embodiments of the present invention, a same rotating shaft runs through multiple filter screens, the rotating shaft and the filter screens are rotatably connected, the rotating shaft is provided with a ring, the ring and the rotating shaft are fixedly connected, the end of the scraper plate is fixedly connected to the ring, and the rotating shaft is connected to a rotating motor.

[0014] According to some embodiments of the present invention, the mesh size of the filter screen decreases gradually from top to bottom.

[0015] The working method according to the second aspect of the present invention is used to control the sterilization and concentration equipment according to the first aspect of the present invention, comprising the following steps: Step 1: The material enters the material circulation system from the processing equipment through the material feed pipe; Step 2: The third three-way valve controls the medium feed pipe to be connected to the high-temperature steam source, the second three-way valve controls the medium return pipe to be connected to the second end, and the second medium discharge pipe is closed at the same time; Step 3: The high-temperature steam source injects high-temperature steam into the medium circulation system; Step 4: transporting the material to the inner tube through the material discharge pipe, and transporting high-pressure steam to the outer tube through the first medium discharge pipe; Step 5: The material temperature measuring element measures the temperature of the material output from the fourth end, and transmits the temperature data to the temperature regulating central module; Step 6: The temperature control central module compares the temperature data with the preset low temperature alarm setting value. If the temperature data is lower than the preset low temperature alarm setting value, proceed to step 7.1. If the temperature data is higher than the preset low temperature alarm setting value, proceed to step 7.2. Step 7.1: The first three-way valve connects the fourth end to the material return pipe, so that the material with a temperature lower than the preset value flows back into the material circulation system, and at the same time controls the steam regulating valve to increase the steam flow in the outer pipe; Step 7.2: The first three-way valve connects the fourth end to the material output pipe, so that the material with a temperature higher than the preset value is output to the next process; Step 8: After all materials in the material circulation system are output to the next process, the material feed pipe, the material discharge pipe, the material return pipe and the material output pipe are closed, the third three-way valve controls the medium feed pipe to be connected to the cleaning medium source, the second three-way valve controls the medium return pipe to be connected to the third end, and the first medium discharge pipe is closed at the same time; Step 9: The cleaning medium source injects the cleaning medium into the medium circulation system; Step 10: The cleaning medium circulates in the inner tube and the medium circulation system, and flushes and cleans the inner tube; Step 11: After cleaning, repeat step 1.

[0016] The working method according to the embodiment of the present invention has at least the following beneficial effects: 1. Realize heating, sterilization, concentration and self-cleaning online, without the need for frequent manual disassembly and cleaning of the heat exchange sleeve and the medium circulation system, thus improving the degree of automation and production efficiency; 2. The temperature regulating central module is used to transport materials that meet the temperature standards to the next process, while materials that do not meet the temperature standards are recirculated and subsequently heated and concentrated to improve the qualified rate of the materials.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 A schematic diagram of a sterilization and concentration device according to an embodiment of the present invention; Figure 2 A schematic diagram of the connection of the heat exchange sleeve of the sterilization and concentration equipment according to an embodiment of the present invention; Figure 3 It is a connection diagram of a material temperature measuring element, a temperature regulating central module, a steam regulating valve and a first three-way valve of a sterilization and concentration device according to an embodiment of the present invention; Figure 4A schematic diagram of a material circulation system of a sterilization and concentration device according to an embodiment of the present invention; Figure 5 A schematic diagram of a medium circulation system of a sterilization and concentration device according to an embodiment of the present invention; Figure 6 It is a schematic flow chart of the working method of the sterilization and concentration equipment according to an embodiment of the present invention.

[0019] 100, heat exchange sleeve; 110, outer tube; 111, first end; 112, second end; 120, inner tube; 121, third end; 122, fourth end; 200, material circulation system; 210, material tank; 211, interlayer space; 212, heating tube; 213, heat transfer medium; 214, ultraviolet sterilization lamp; 215, flow guide; 220, material feed pipe; 230, material discharge pipe; 231, material pump; 240, material return pipe; 250, stirring mechanism; 251, rotating shaft; 252, first stirring blade; 2521, first scraper; 2522, second scraper; 253, second stirring blade; 300, medium circulation system; 310, medium feed pipe; 311, third three-way valve; 320, first medium discharge pipe; 321, medium pump; 330, second medium discharge pipe; 331, cleaning pump; 340, medium return pipe; 341, second three-way valve; 350, medium tank; 360, heat exchanger; 370, filter mechanism; 371, filter screen; 372, scraper; 373, rotating shaft; 3731, ferrule; 380, sewage pipe; 400, steam regulating valve; 500, material output pipe; 510, first three-way valve; 600. Material temperature measuring element; 700, temperature control central module; DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] Reference Figures 1 to 5 The sterilization and concentration equipment of the embodiment of the present invention comprises a heat exchange sleeve 100, a material circulation system 200, a medium circulation system 300, a steam regulating valve 400, a material output pipe 500, a material temperature measuring element 600 and a temperature regulating central module 700. The heat exchange sleeve 100 comprises an outer tube 110 and an inner tube 120. The outer tube 110 has a first end 111 and a second end 112. The inner tube 120 has a third end 121 and a fourth end 122. The material circulation system 200 comprises a material feed pipe 220, a material outlet pipe 500, a material temperature measuring element 600 and a temperature regulating central module 700. The material discharge pipe 230 and the material return pipe 240 are respectively connected to the third end 121 and the fourth end 122, so that the material can circulate in the material circulation system 200; the medium circulation system 300 has a medium feed pipe 310, a first medium discharge pipe 320, a second medium discharge pipe 330 and a medium return pipe 340, the medium feed pipe 310 is connected to the high temperature steam source and the clean medium source through the third three-way valve 311, wherein the first medium discharge pipe 320 The first medium discharge pipe 320 and the second medium discharge pipe 330 are respectively connected to the first end 111 and the fourth end 122, and the medium return pipe 340 is connected to the second end 112 and the third end 121 through the second three-way valve 341; the steam regulating valve 400 is arranged on the first medium discharge pipe 320, and the steam regulating valve 400 is used to control the flow rate of the high-temperature steam in the first medium discharge pipe 320; the material output pipe 500 is connected to the fourth end 122, and a material output pipe 500, the inner pipe 120 and the material return pipe 240 are arranged between them. The first three-way valve 510; the material temperature measuring element 600 is arranged on the fourth end 122, and the material temperature measuring element 600 is used to test the temperature of the material flowing out from the fourth end 122; the temperature regulation central module 700 is electrically connected to the material temperature measuring element 600, the first three-way valve 510 and the steam regulating valve 400, and the temperature regulation central module 700 is used to receive temperature data from the material temperature measuring element 600, and is used to control the switching of the first three-way valve 510, and is used to control the output flow of the steam regulating valve 400.

[0025] Specifically, refer to Figure 6 The working method for controlling the sterilization and concentration device of the embodiment of the present invention comprises the following steps: Step 1: The material enters the material circulation system 200 from the processing equipment through the material feed pipe 220; Step 2: The third three-way valve 311 controls the medium feed pipe 310 to be connected to the high-temperature steam source, and the second three-way valve 341 controls the medium return pipe 340 to be connected to the second end 112, and at the same time closes the second medium discharge pipe 330; Step 3: The high-temperature steam source injects high-temperature steam into the medium circulation system 300; Step 4: The material is transported to the inner tube 120 through the material discharge pipe 230, and the high-pressure steam is transported to the outer tube 110 through the first medium discharge pipe 320; Step 5: The material temperature measuring element 600 measures the temperature of the material outputted from the fourth end 122 and transmits the temperature data to the temperature regulating central module 700; Step 6: The temperature adjustment central module 700 compares the temperature data with the preset low temperature alarm setting value. If the temperature data is lower than the preset low temperature alarm setting value, proceed to step 7.1. If the temperature data is higher than the preset low temperature alarm setting value, proceed to step 7.2. Step 7.1: The first three-way valve 510 connects the fourth end 122 and the material return pipe 240 to allow the material with a temperature lower than a preset value to flow back into the material circulation system 200, and at the same time controls the steam regulating valve 400 to increase the steam flow in the outer pipe 110; Step 7.2: The first three-way valve 510 connects the fourth end 122 and the material output pipe 500, so that the material with a temperature higher than the preset value is output to the next process; Step 8: After all materials in the material circulation system 200 are output to the next process, the material feed pipe 220, the material discharge pipe 230, the material return pipe 240 and the material output pipe 500 are closed, the third three-way valve 311 controls the medium feed pipe 310 to be connected to the cleaning medium source, the second three-way valve 341 controls the medium return pipe 340 to be connected to the third end 121, and the first medium discharge pipe 320 is closed at the same time; Step 9: The cleaning medium source injects the cleaning medium into the medium circulation system 300; Step 10: The cleaning medium circulates in the inner tube 120 and the medium circulation system 300 to flush and clean the inner tube 120; Step 11: After cleaning, repeat step 1.

[0026] Specifically, in step 1 to step 4, the process steps are almost synchronized, so that the material circulation system 200 and the medium circulation system 300 are both connected to the heat exchange sleeve 100, wherein the material circulation system 200 is connected to the inner tube 120, the medium circulation system 300 is connected to the outer tube 110, and the flow direction of the material in the material circulation system 200 ( Figure 2 A direction in the medium circulation system 300), and the flow direction of the high temperature steam in the medium circulation system 300 ( Figure 2 The direction B in the figure is opposite, and heat exchange occurs between the high-temperature steam in the outer tube 110 and the material in the inner tube 120, so that the material in the inner tube 120 is heated, and the boring is heated to a high temperature. The high temperature kills the harmful substances in the material, thereby achieving a sterilization function. At the same time, the high temperature can concentrate the material, and has a certain transpiration and concentration effect on the material itself, which further increases the viscosity of the product while sterilizing. It can be widely used in the sterilization and concentration of medium and high viscosity materials such as ketchup and jam.

[0027] On the other hand, in step 5 to step 7.2, the preset low temperature alarm setting value in the temperature regulating central module 700 is specifically set between 90 and 125 degrees, which meets the general needs of medium and high viscosity materials such as ketchup and jam. In actual processing, by setting the preset low temperature alarm setting value to a specific value and comparing the value with the temperature measured by the material temperature measuring element, the material from the fourth end 122 is diverted. The material whose temperature does not reach the preset low temperature alarm setting is not enough to achieve sterilization and concentration, and the viscosity it finally reaches is insufficient, so it needs to pass through the material circulation system 200 to reach the inner tube 120 again and be connected with the outer tube 11. 0 is further concentrated at high temperature to improve the concentration and viscosity of the material, and finally transported to the next process from the material output pipe 500, and steps 7.1 and 7.2 are a branch of step 6. As can be seen from the above, their function is to identify and divert the material. Further reference is made to step 7.1. In step 7.1, the steam regulating valve 400 is a device that can control the flow rate of the high-temperature steam in the current first medium discharge pipe 320, and can further dynamically adjust the flow rate of the high-temperature steam in the outer tube 110, increase the heat exchange with the material in the inner tube 120, and ensure that the material flowing out from the fourth end 122 meets the requirements of the next process.

[0028] Furthermore, in step 8 to step 10, the entire sterilization and concentration equipment is cleaned online. Specifically, in step 1 to step 7.2, all materials will eventually be transferred to the next process. At this time, the entire material circulation system 200 has no materials, and there is no need to sterilize and concentrate the materials at high temperature. However, some materials will remain in the sterilization and concentration equipment, and the residual materials will affect the subsequent material processing. For this reason, a cleaning medium is introduced from a cleaning medium source, and the cleaning medium can be tap water. Figure 2 In the C direction, tap water enters the inner tube 120 through the second medium discharge pipe 330, and the tap water circulates continuously between the inner tube 120 and the medium circulation system 300, and flushes the inner tube 120, so that the residual materials in the inner tube 120 are flushed into the medium circulation system 300. Furthermore, after a certain period of cleaning, by closing the second medium discharge pipe 330 in the medium circulation system 300, all sewage with residual materials can flow back to the medium circulation system 300 for centralized treatment.

[0029] In summary, the sterilization and concentration equipment of the present invention has the following advantages in use: 1. Realize heating sterilization, concentration processing and self-cleaning online, without the need for frequent manual disassembly and cleaning of the heat exchange sleeve 100 and the medium circulation system 300, thereby improving the degree of automation and production efficiency; 2. The temperature regulating central module 700 is used to convey the materials that meet the temperature standard to the next process, while the materials that do not meet the temperature standard are recirculated and subsequently heated and concentrated to improve the qualified rate of the materials.

[0030] In some embodiments, reference Figure 4 The material circulation system 200 also includes a material tank 210, a material feed pipe 220 and a material return pipe 240 are arranged above the material tank 210, a material discharge pipe 230 and a material return pipe 240 are both arranged on the material tank 210, a material discharge pipe 230 is provided with a material pump 231, and a stirring mechanism 250 for mixing materials is built into the material tank 210. The material tank 210 is used to hold materials from the previous process, specifically, materials that have not been heated and concentrated. Referring to step 1, after a certain amount of material enters the material tank 210, it will enter the inner tube 120 through the material discharge pipe 230, and return to the material tank 210 through the inner tube 120, or enter the next process. After all the materials in the material tank 210 enter the next process, the online cleaning of the inner tube 120 will be started. Referring to step 11, after the cleaning is completed, the new material from the previous process will enter the material tank 210 again through the material feed pipe 220, waiting for the subsequent steps 2 to 7.2.

[0031] Preferably, the side wall of the material tank 210 is a double-layer structure, and is provided with an interlayer space 211, in which a coiled heating tube 212 is built, and the interlayer space 211 is filled with a heat-conducting medium 213, and an ultraviolet sterilization lamp 214 is provided on the top of the material tank 210. In actual operation, the material pre-entered into the material tank 210 will be preheated in the material tank 210. Preheating the material before entering the inner tube 120 can increase the viscosity of the material as a whole, improve the smoothness of the material flowing in the material discharge pipe 230 and the inner tube 120, avoid blockage, and further improve the efficiency. At the same time, the preheated material can improve the concentration efficiency of the high-temperature steam on the material after entering the inner tube 120, ensuring that most of the material flowing out of the fourth end 122 meets the requirements of the next process, and with the above-mentioned stirring mechanism 250, stirring and preheating can improve the material uniformity and heat uniformity of the material, so that the temperature of the material in each area tends to be consistent, which can further improve the efficiency of subsequent heating.

[0032] Furthermore, referring to Figure 4The stirring mechanism 250 includes a rotating shaft 251, a first stirring blade 252 and a second stirring blade 253. The rotating shaft 251 is rotatably inserted in the middle of the material tank 210. The rotating shaft 251 is connected to a driving motor, and the driving motor is used to drive the rotating shaft 251 to pivot; the first stirring blade 252 is anchor-shaped, the first stirring blade 252 and the rotating shaft 251 are fixedly connected, the outer side of the first stirring blade 252 is parallel to the inner side wall of the material tank 210, and the outer side of the first stirring blade 252 is provided with a first scraper 2521, the first scraper 2521 is abutted against the inner side wall of the material tank 210, and the length of the first scraper 2521 is equal to the length of the inner side wall of the material tank 210; the second stirring blade 253 is fixedly connected to the shaft body of the rotating shaft 251, and the second stirring blade 253 extends outward and downward from the shaft body of the rotating shaft 251. During actual use, the rotating shaft 251 rotates under the drive of the driving motor, and drives the first stirring blade 252 and the second stirring blade 253 fixed on the rotating shaft 251 to rotate. During the rotation process, the anchor-shaped first stirring blade 252 produces a spiral upward movement trend for the material inside the material tank 210, while the second stirring blade 253 produces a spiral downward movement trend for the material inside the material tank 210. By generating two opposite rotation trends on the material inside the material tank 210, the turbulence in the upward direction caused by the first stirring blade 252 will offset and mix with the turbulence in the downward direction caused by the second stirring blade 253, thereby increasing the mixing degree of the viscous material, thereby making the materials inside the two turbulences more evenly mixed together. In addition, the first scraper 2521 abuts against the inner wall of the material tank 210, which can effectively scrape off the material adhering to the inner wall of the material tank 210 to avoid material residue, thereby further improving the utilization rate of the material and avoiding material residue in the material tank 210. Specifically, a conical guide portion 215 is provided at the bottom of the material tank 210, and a second scraper 2522 is provided on the outer side of the bent portion at the bottom of the first stirring blade 252, and the second scraper 2522 abuts against the inner wall of the guide portion 215.

[0033] In some embodiments, reference Figure 5 The medium circulation system 300 further includes a medium tank 350 and a heat exchanger 360. The medium feed pipe 310 and the medium return pipe 340 are arranged above the medium tank 350. The first medium discharge pipe 320 and the second medium discharge pipe 330 are arranged below the medium tank 350. The first medium discharge pipe 320 is provided with a medium pump 321, and the second medium discharge pipe 330 is provided with a cleaning pump 331. In the above step 2, high-temperature steam is injected into the medium tank 350 through the medium feed pipe 310, and in the above step 8, a cleaning medium (taking tap water as an example) is injected through the medium feed pipe 310. Therefore, the medium tank 350 can store gas or liquid.

[0034] When the high-temperature concentration process is performed (step 4 to step 7.2), the second medium discharge pipe 330 is closed, and only the medium pump 321 is used to inject high-temperature steam into the outer tube 110. Furthermore, in order to ensure that the circulating high-temperature steam carries a large amount of heat each time it enters the outer tube 110, the heat exchanger 360 is arranged on the medium return pipe 340, so that the steam entering the medium tank 350 through the medium return pipe 340 regains a large amount of heat and can pass through the outer tube 110 again to heat the material in the inner tube 120; On the other hand, when performing the online cleaning process (steps 8 to 10), the first medium discharge pipe 320 is closed, and only tap water is injected into the inner tube 120 through the cleaning pump 331, and the inner wall of the inner tube 120 is continuously flushed by tap water. The tap water is mixed with the viscous material to reduce its viscosity, thereby preventing the material from continuing to adhere to the inner wall of the inner tube 120, so that the material remaining on the inner wall of the inner tube 120 can be brought to the medium tank 350 through the tap water. Specifically, the medium tank 350 also has a drain pipe 380. After cleaning is completed, the liquid material can be recovered or centrally processed through the drain pipe 380 under the medium tank 350. In this embodiment, the material in the residue often contains small particles of solid impurities, which cannot be removed in subsequent processes. For this reason, the medium tank 350 is built with a filtering mechanism 370, and the residual material is filtered by the filtering mechanism 370 to facilitate subsequent recovery.

[0035] Specifically, refer to Figure 5 The filtering mechanism 370 includes a filter screen 371 and a scraper plate 372. A plurality of filter screens 371 are provided, and the plurality of filter screens 371 are arranged in the medium tank 350 at intervals along the vertical direction; the scraper plate 372 is attached to the upper surface of the filter screen 371, one end of the scraper plate 372 is rotatably connected to the center position of the filter screen 371, and the other end is attached to the inner wall surface of the medium tank 350. The scraper plate 372 continuously rotates on the surface of the filter 371, so that the filtered impurities will not remain in the same position of the filter 371, thereby preventing impurities from blocking the filter holes of the filter 371. In order to achieve synchronous driving of the scraper plates 372 of multiple filter screens 371, in some embodiments, the same rotating shaft 373 runs through the multiple filter screens 371, the rotating shaft 373 and the filter screen 371 are rotatably connected, the rotating shaft 373 is provided with a ring 3731, the ring 3731 and the rotating shaft 373 are fixedly connected, the end of the scraper plate 372 is fixedly connected to the ring 3731, and the rotating shaft 373 is connected to a rotating motor.

[0036] In addition, in order to filter impurities in a hierarchical manner, the mesh size of the filter screen 371 decreases gradually from top to bottom.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A sterilization and concentration device, characterized in that: include: A heat exchange sleeve (100) comprises an outer tube (110) and an inner tube (120), wherein the outer tube (110) has a first end (111) and a second end (112), and the inner tube (120) has a third end (121) and a fourth end (122); A material circulation system (200) comprising a material feed pipe (220), a material discharge pipe (230) and a material return pipe (240), wherein the material discharge pipe (230) and the material return pipe (240) are respectively connected to the third end (121) and the fourth end (122), so that the material can circulate in the material circulation system (200); A medium circulation system (300) comprises a medium feed pipe (310), a first medium discharge pipe (320), a second medium discharge pipe (330) and a medium return pipe (340), wherein the medium feed pipe (310) is connected to a high-temperature steam source and a clean medium source via a third three-way valve (311), wherein the first medium discharge pipe (320) and the second medium discharge pipe (330) are connected to the first end (111) and the fourth end (122) respectively, and the medium return pipe (340) is connected to the second end (112) and the third end (121) via a second three-way valve (341); a steam regulating valve (400), arranged on the first medium discharge pipe (320), the steam regulating valve (400) being used to control the flow rate of high-temperature steam in the first medium discharge pipe (320); a material output pipe (500) connected to the fourth end portion (122), wherein a first three-way valve (510) is disposed between the material output pipe (500), the inner pipe (120) and the material return pipe (240); A material temperature measuring element (600) is arranged on the fourth end portion (122), and the material temperature measuring element (600) is used to measure the temperature of the material flowing out from the fourth end portion (122); The temperature regulating central module (700) is electrically connected to the material temperature measuring element (600), the first three-way valve (510) and the steam regulating valve (400). The temperature regulating central module (700) is used to receive temperature data from the material temperature measuring element (600), and to control the switching of the first three-way valve (510), and to control the output flow of the steam regulating valve (400).

2. The sterilization and concentration equipment according to claim 1, characterized in that: The material circulation system (200) further comprises a material tank (210), the material feed pipe (220) and the material return pipe (240) are arranged above the material tank (210), the material discharge pipe (230) and the material return pipe (240) are both arranged on the material tank (210), the material discharge pipe (230) is provided with a material pump (231), and the material tank (210) is internally provided with a stirring mechanism (250) for mixing materials.

3. The sterilization and concentration equipment according to claim 2, characterized in that: The side wall of the material tank (210) is a double-layer structure and is provided with an interlayer space (211). A coiled heating tube (212) is built into the interlayer space (211). The interlayer space (211) is filled with a heat-conducting medium (213). An ultraviolet sterilization lamp (214) is provided on the top of the material tank (210).

4. The sterilization and concentration equipment according to claim 2 or 3, characterized in that: The stirring mechanism (250) comprises: A rotating shaft (251) is rotatably inserted in the middle of the material tank (210), and the rotating shaft (251) is connected to a driving motor, and the driving motor is used to drive the rotating shaft (251) to pivot; The first stirring blade (252) is anchor-shaped. The first stirring blade (252) is fixedly connected to the rotating shaft (251). The outer side of the first stirring blade (252) is arranged parallel to the inner side wall of the material tank (210). A first scraper (2521) is arranged on the outer side of the first stirring blade (252). The first scraper (2521) is in contact with the inner side wall of the material tank (210), and the length of the first scraper (2521) is equal to the length of the inner side wall of the material tank (210); The second stirring blade (253) is fixedly connected to the shaft body of the rotating shaft (251), and the second stirring blade (253) extends outward and downward from the shaft body of the rotating shaft (251).

5. The sterilization and concentration equipment according to claim 4, characterized in that: A conical guide portion (215) is provided at the bottom of the material tank (210), a second scraper (2522) is provided on the outer side of the bent portion at the bottom of the first stirring blade (252), and the second scraper (2522) is in abutment with the inner side wall of the guide portion (215).

6. The sterilization and concentration equipment according to claim 1, characterized in that: The medium circulation system (300) further comprises a medium tank (350) and a heat exchanger (360); the medium feed pipe (310) and the medium return pipe (340) are arranged above the medium tank (350); the first medium discharge pipe (320) and the second medium discharge pipe (330) are arranged below the medium tank (350); the first medium discharge pipe (320) is provided with a medium pump (321); the second medium discharge pipe (330) is provided with a cleaning pump (331); the heat exchanger (360) is arranged on the medium return pipe (340); and the medium tank (350) is provided with a filtering mechanism (370) therein.

7. The sterilization and concentration equipment according to claim 6, characterized in that: The filtering mechanism (370) comprises: A plurality of filter screens (371) are provided, and the plurality of filter screens (371) are arranged in the medium tank (350) at intervals along the vertical direction; The scraper plate (372) is attached to the upper surface of the filter screen (371), one end of the scraper plate (372) is rotatably connected to the center of the filter screen (371), and the other end is attached to the inner wall surface of the medium tank (350).

8. The sterilization and concentration equipment according to claim 7, characterized in that: A common rotating shaft (373) runs through the plurality of filter screens (371); the rotating shaft (373) and the filter screens (371) are rotatably connected; the rotating shaft (373) is sleeved with a ferrule (3731); the ferrule (3731) and the rotating shaft (373) are fixedly connected; the end of the scraper plate (372) and the ferrule (3731) are fixedly connected; and the rotating shaft (373) is connected to a rotating motor.

9. The sterilization and concentration equipment according to claim 6, 7 or 8, characterized in that: The mesh size of the filter screen (371) decreases gradually from top to bottom.

10. A working method, characterized in that Used to control the sterilization and concentration equipment according to any one of claims 1 to 9, comprising the following steps: Step 1: The material enters the material circulation system (200) from the processing equipment through the material feed pipe (220); Step 2: The third three-way valve (311) controls the medium feed pipe (310) to be connected to the high-temperature steam source, the second three-way valve (341) controls the medium return pipe (340) to be connected to the second end (112), and the second medium discharge pipe (330) is closed at the same time; Step 3: A high-temperature steam source injects high-temperature steam into the medium circulation system (300); Step 4: transporting the material to the inner tube (120) through the material discharge pipe (230), and transporting high-pressure steam to the outer tube (110) through the first medium discharge pipe (320); Step 5: The material temperature measuring element (600) measures the temperature of the material output from the fourth end (122), and transmits the temperature data to the temperature regulating central module (700); Step 6: The temperature adjustment central module (700) compares the temperature data with the preset low temperature alarm setting value. If the temperature data is lower than the preset low temperature alarm setting value, proceed to step 7.

1. If the temperature data is higher than the preset low temperature alarm setting value, proceed to step 7.

2. Step 7.1: The first three-way valve (510) connects the fourth end (122) and the material return pipe (240) to allow the material with a temperature lower than a preset value to flow back into the material circulation system (200), and at the same time controls the steam regulating valve (400) to increase the steam flow in the outer pipe (110); Step 7.2: The first three-way valve (510) connects the fourth end (122) and the material output pipe (500), so that the material with a temperature higher than the preset value is output to the next process; Step 8: After all materials in the material circulation system (200) are output to the next process, the material feed pipe (220), the material discharge pipe (230), the material return pipe (240) and the material output pipe (500) are closed, the third three-way valve (311) controls the medium feed pipe (310) to be connected to the cleaning medium source, the second three-way valve (341) controls the medium return pipe (340) to be connected to the third end (121), and the first medium discharge pipe (320) is closed at the same time; Step 9: The cleaning medium source injects the cleaning medium into the medium circulation system (300); Step 10: The cleaning medium circulates in the inner tube (120) and the medium circulation system (300) to flush and clean the inner tube (120); Step 11: After cleaning, repeat step 1.

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