A multi-stage membrane filtration camel milk sterilization integrated device

Abstract

The utility model discloses a multistage membrane filtration camel milk sterilization integrated device relates to camel milk production field, including mounting seat, a plurality of filtering components, a plurality of camel milk feeding components, camel milk discharge component, flush feed component, flush pump and flush discharge component, a plurality of filtering components all set up on mounting seat, and filtering component is connected in proper order according to the order of primary filtration, secondary filtration, tertiary filtration, every filtering component all includes filter jar, be provided with filter core in filter jar, wherein one camel milk feeding component's output and primary filtration component's filter jar milk inlet communicate, the utility model discloses the filtering unit of three -level series connection realizes gradient filtration, and primary filtration component removes impurity, and secondary filtration component separates colloid, and tertiary filtration component intercepts spore and pathogenic bacteria, and normal temperature filtration can retain more than 90% immunoglobulin, and the sterilization rate reaches more than 99.99%, and prolongs camel milk shelf life.

Description

Technical Field

[0001] This utility model belongs to the field of camel milk production, specifically a multi-stage membrane filtration and sterilization integrated device for camel milk. Background Technology

[0002] In the camel milk production and processing sector, sterilization is a core step in ensuring product safety and extending shelf life. Simultaneously, it's crucial to preserve the bioactive nutrients in camel milk, such as immunoglobulins and lactoferrin—this dual requirement of "sterilization safety" and "nutritional integrity" places stringent demands on sterilization processes. Natural camel milk contains not only pathogenic bacteria like Brucella and Listeria, but also commonly carries Bacillus spores. These spores are highly heat-resistant, making them difficult to completely inactivate using conventional sterilization methods. Furthermore, these spores can easily reactivate as live bacteria at suitable temperatures, directly shortening the shelf life of camel milk and increasing food safety risks.

[0003] Existing camel milk sterilization technologies have significant drawbacks: While mainstream pasteurization (60-65℃ for 30 minutes) can kill some pathogens, it cannot destroy spore structures. After sterilization, camel milk still requires low-temperature storage and has a very short shelf life. Simultaneously, high temperatures cause a significant loss of heat-sensitive active ingredients (such as immunoglobulins) in camel milk, reducing its nutritional value. Some companies have attempted to use single-membrane filtration technologies (such as microfiltration or ultrafiltration), but the limited pore size of a single membrane makes it difficult to simultaneously achieve both "impurity removal" and "spore killing"—microfiltration membranes (pore size 1-5μm) can only retain large particles and some bacteria, failing to filter spores around 0.5μm; ultrafiltration membranes (molecular weight cutoff 10,000-50,000 Da), while removing smaller colloids and bacteria, still have limited effectiveness in retaining spores, making it difficult to meet food safety standards for sterilization. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage membrane filtration camel milk sterilization integrated device to solve the problem that existing camel milk sterilization technologies cannot simultaneously achieve spore inactivation and active ingredient retention, resulting in short shelf life and nutrient loss, making it difficult to meet both safety and nutritional needs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage membrane filtration camel milk sterilization integrated device, including a mounting base, several filter components, several camel milk feeding components, camel milk discharging components, rinsing feeding components, rinsing pump and rinsing discharging components;

[0006] Several filter components are mounted on a mounting base and are connected in series in the order of primary filtration, secondary filtration and tertiary filtration. Each filter component includes a filter canister and a filter element is disposed inside the filter canister.

[0007] The camel milk feeding assembly is mounted on the mounting base. The output end of one of the camel milk feeding assemblies is connected to the milk inlet of the filter tank of the primary filtration assembly, for feeding camel milk to be processed into the filtration assembly. The camel milk discharging assembly includes a milk discharging tee and a milk discharging control valve. One end of the milk discharging tee is connected to the milk outlet of the filter tank. The other end of the milk discharging tee of the primary filtration assembly is connected to the milk inlet of the filter tank of the secondary filtration assembly through one of the camel milk feeding assemblies. The other end of the milk discharging tee of the secondary filtration assembly is connected to the milk inlet of the filter tank of the tertiary filtration assembly through one of the camel milk feeding assemblies. The milk discharging control valve is located at the output end of the milk discharging tee of the tertiary filtration assembly.

[0008] The flushing feed assembly is mounted on the mounting base, the input end of the flushing pump is connected to the flushing feed assembly, and the output end of the flushing pump is connected to the flushing water inlet of each filter tank.

[0009] The flushing and discharge assembly is connected to the flushing outlet of each filter tank and is used to discharge the cleaning fluid.

[0010] Preferably, the filter element includes a primary filter element, a secondary filter element, and a tertiary filter element; the primary filter element is disposed in the filter canister of the primary filtration assembly, the secondary filter element is disposed in the filter canister of the secondary filtration assembly, and the tertiary filter element is disposed in the filter canister of the tertiary filtration assembly; the primary filter element is a polypropylene microfiltration membrane filter element, the secondary filter element is a polyethersulfone ultrafiltration membrane filter element, and the tertiary filter element is a polyvinylidene fluoride nanofiltration membrane filter element.

[0011] Preferably, the camel milk feeding assembly includes a milk pump, a milk extraction pipe, a milk supply pipe, a milk inlet tee, and a milk inlet control valve;

[0012] The milk pump is mounted on the mounting base. One end of the milk extraction tube is connected to the upper-level camel milk pretreatment equipment, and the other end of the milk extraction tube is connected to the input end of the milk pump.

[0013] One end of the milk supply tube is connected to the output end of the milk pump, and the other end of the milk supply tube is connected to one end of the milk inlet tee tube;

[0014] The other two ends of the milk inlet tee are respectively connected to the milk inlet end of the filter tank of the corresponding primary filtration component, and the milk inlet control valve is set between the milk inlet tee and the filter tank.

[0015] Preferably, the flushing and feeding assembly includes a water supply pipe, a water inlet tee pipe, and a water inlet control valve;

[0016] One end of the water supply pipe is used to connect to an external cleaning fluid storage tank, and the other end of the water supply pipe is connected to one end of the water inlet tee pipe;

[0017] The other two ends of the inlet tee are respectively connected to the flushing inlet of the corresponding filter tank, and the inlet control valve is set between the inlet tee and the filter tank.

[0018] The input end of the flushing pump is connected to the water supply pipe, and the output end of the flushing pump is connected to the inlet tee pipe.

[0019] Preferably, the flushing and discharge assembly includes a water outlet pipe, a water outlet tee pipe, and a water outlet control valve;

[0020] One end of the outlet tee is connected to the flushing outlet of the filter tank, and the other end of the outlet tee is connected to the outlet pipe.

[0021] One end of the outlet pipe is used to connect with external sewage treatment equipment, and the outlet control valve is set between the outlet tee and the outlet pipe.

[0022] Preferably, each of the filter canisters is provided with an exhaust valve at the top, the exhaust valve being in communication with the interior of the filter canister for discharging air from inside the filter canister.

[0023] Preferably, the primary filtration component, the secondary filtration component, and the tertiary filtration component each have two filter canisters, with the two primary filtration components connected in parallel, the two secondary filtration components connected in parallel, and the two tertiary filtration components connected in parallel.

[0024] Preferably, a flow sensor is installed on the pipeline between the milk inlet control valve and the filter tank, and the flow sensor is used to monitor the flow rate of camel milk entering the filter tank.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This utility model achieves gradient filtration through a three-stage series filtration unit. The primary filtration component removes impurities, the secondary filtration component separates colloids, and the tertiary filtration component traps spores and pathogens. This solves the problems of traditional heat sterilization destroying nutrients and single membrane filtration failing to remove spores. Room temperature filtration (25-35℃) can retain more than 90% of immunoglobulins, and the sterilization rate reaches more than 99.99%, extending the shelf life of camel milk.

[0027] 2. This utility model achieves automatic online cleaning through a flushing component, which shortens maintenance time, improves maintenance efficiency, extends the service life of membrane modules, and reduces consumable costs.

[0028] 3. This utility model adopts a parallel design of filter tanks of the same level, which can realize the continuous operation of one tank while the other tank is being maintained, thus solving the problem of traditional equipment maintenance requiring downtime, improving the continuous operation rate of the equipment, and meeting the needs of small and medium-sized processing plants. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 This is a first-view perspective three-dimensional structural diagram of an embodiment of the present utility model;

[0031] Figure 2 This is a second-view perspective three-dimensional structural diagram provided for an embodiment of the present utility model;

[0032] Figure 3 This is a front view sectional diagram of the structure provided in an embodiment of the present utility model;

[0033] Figure 4 This is a rear view structural diagram provided for an embodiment of the present utility model.

[0034] In the picture:

[0035] 1. Mounting base; 2. Filter tank; 3. Camel milk discharge assembly; 301. Milk discharge tee; 302. Milk discharge control valve; 4. Camel milk feeding assembly; 401. Milk pump; 402. Milk extraction pipe; 403. Milk supply pipe; 404. Milk inlet tee; 405. Milk inlet control valve; 5. Flushing feeding assembly; 501. Water supply pipe; 502. Water inlet tee; 503. Water inlet control valve; 6. Flushing pump; 7. Flushing discharge assembly; 701. Water outlet pipe; 702. Water outlet tee; 703. Water outlet control valve; 8. Air vent valve; 9. Primary filter element; 10. Secondary filter element; 11. Tertiary filter element. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0037] As attached Figure 1 To be continued Figure 4 As shown:

[0038] This utility model provides a multi-stage membrane filtration camel milk sterilization integrated device, including a mounting base 1, several filter components, several camel milk feeding components 4, camel milk discharging components 3, rinsing feeding components 5, rinsing pump 6, and rinsing discharging components 7; the filter components are all mounted on the mounting base 1 and connected in series in the order of primary filtration, secondary filtration, and tertiary filtration, each filter component including a filter tank 2, and a filter element is installed in the filter tank 2; the camel milk feeding components 4 are mounted on the mounting base 1, and the output end of one of the camel milk feeding components 4 is connected to the milk inlet end of the filter tank 2 of the primary filtration component for conveying camel milk to be processed to the filter components; the camel milk discharging components 3 include a milk discharging three-way pipe 301 and a milk discharging control valve 302. One end of the milk outlet tee 301 is connected to the milk outlet end of the filter tank 2. The other end of the milk outlet tee 301 of the primary filtration component is connected to the milk inlet end of the filter tank 2 of the secondary filtration component through one of the camel milk feed components 4. The other end of the milk outlet tee 301 of the secondary filtration component is connected to the milk inlet end of the filter tank 2 of the tertiary filtration component through one of the camel milk feed components 4. The milk outlet control valve 302 is located at the output end of the milk outlet tee 301 of the tertiary filtration component. The rinsing feed component 5 is located on the mounting base 1. The input end of the rinsing pump 6 is connected to the rinsing feed component 5. The output end of the rinsing pump 6 is connected to the rinsing water inlet end of each filter tank 2. The rinsing discharge component 7 is connected to the rinsing water outlet end of each filter tank 2 and is used to discharge the cleaning liquid.

[0039] The mounting base 1 is made of 304 stainless steel, welded and with a brushed surface. Bolts are welded to the four corners of the bottom for fixing to the workshop floor. Mounting base 1 has component fixing holes (12mm diameter, 200mm spacing) for bolting filter tank 2, milk pump 401, flushing pump 6, and other components. The filtration components are connected in series in a "primary → secondary → tertiary" configuration. Each stage contains two parallel filter tanks 2 (304 stainless steel, 50L capacity, 300mm diameter, 600mm height). The top of filter tank 2 has a DN50 milk inlet and a DN40 flushing inlet, while the bottom has a DN50 milk outlet and a DN40 flushing outlet. A temperature sensor (range 0-50℃, accuracy ±0.5℃) is attached to the tank body to monitor the filtration temperature. The camel milk feeding assembly 4 features a sanitary diaphragm pump 401, a milk extraction pipe 402 and a milk supply pipe 403 made of food-grade 316L stainless steel (50mm diameter, 3mm wall thickness), a DN50 stainless steel tee 404 (3mm wall thickness), and a sanitary solenoid valve 405 (DN50, 316L material, response time ≤0.5s). The camel milk discharging assembly 3 features a DN50 stainless steel tee 301 and a sanitary pneumatic valve 302 (DN50, 316L material, pressure resistance 1.0MPa). The rinsing feeding assembly 5 features a food-grade PVC pipe 501 (40mm diameter, 4mm wall thickness), a DN40 PVC tee 502, and a solenoid valve 503 (DN40, PVC material). The rinsing pump 6 is a sanitary diaphragm pump (flow rate 3m³ / h). 3 / h, head 15m, material 304 stainless steel); the outlet pipe 701 of the rinsing and discharging assembly 7 is a PVC pipe (diameter 40mm), the outlet tee pipe 702 is a DN40 PVC tee, and the outlet control valve 703 is a solenoid valve (DN40, material PVC). Referring to the existing publication CN216464325U "Camel Milk Sterilization Device", which uses pasteurization (60-65℃, 30min) resulting in an immunoglobulin loss rate ≥15% and cannot remove 0.5μm spores, this embodiment solves the above defects by using room temperature multi-stage membrane filtration.

[0040] During operation, the staff first fixes the mounting base 1 to the workshop floor using anchor bolts and checks the connections of each component: the milk extraction pipe 402 connects to the upstream camel milk pretreatment equipment (such as a centrifuge), the milk outlet control valve 302 connects to the subsequent filling equipment, the water supply pipe 501 connects to the external cleaning solution storage tank (containing a mixed cleaning solution of NaOH and citric acid), and the water outlet pipe 701 connects to the wastewater treatment equipment. Next, the staff opens the exhaust valve 8 on the top of the filter tank 2 of the primary, secondary, and tertiary filtration components, starts the milk pump 401, and opens the milk inlet control valve 405. The camel milk to be processed enters the filter tank 2 of the primary filtration component through the milk extraction pipe 402, the milk supply pipe 403, and the milk inlet tee pipe 404. Air inside filter tank 2 is discharged through exhaust valve 8 (exhaust valve 8 is closed after no more bubbles overflow); after camel milk is filtered by primary filter element 9, it is pumped into filter tank 2 of the secondary filter assembly by milk pump 401, then filtered by secondary filter element 10 before entering filter tank 2 of the tertiary filter assembly. Finally, it is pumped into filter tank 2 of the tertiary filter assembly by milk pump 401, and after filtration by tertiary filter element 11, milk discharge control valve 302 is opened, and qualified camel milk is delivered to the filling equipment; the filtration temperature is controlled at 25-35℃ throughout the process to avoid heat damage to nutrients. Through this process, the camel milk sterilization rate is ≥99.99% (removal of Brucella, Bacillus, etc.), the immunoglobulin retention rate is ≥98%, and the processing capacity reaches 5m³. 3 / h, far exceeding the capacity of existing single-membrane filtration devices (processing capacity ≤2m³). 3 / h).

[0041] As attached Figure 3 As shown: In one embodiment of this utility model, the filter element includes a primary filter element 9, a secondary filter element 10, and a tertiary filter element 11; the primary filter element 9 is disposed in the filter canister 2 of the primary filtration assembly, the secondary filter element 10 is disposed in the filter canister 2 of the secondary filtration assembly, and the tertiary filter element 11 is disposed in the filter canister 2 of the tertiary filtration assembly; the primary filter element 9 is a polypropylene microfiltration membrane filter element, the secondary filter element 10 is a polyethersulfone ultrafiltration membrane filter element, and the tertiary filter element 11 is a polyvinylidene fluoride nanofiltration membrane filter element.

[0042] The primary filter element 9 is a polypropylene (PP) microfiltration membrane (500mm long, 60mm outer diameter, 30mm inner diameter), with a pore size of 1-5μm and a porosity ≥80%. It can trap pasture dust, coarse fiber impurities, and large fat globules in camel milk. The secondary filter element 10 is a polyethersulfone (PES) ultrafiltration membrane (500mm long, 60mm outer diameter, 30mm inner diameter), with a molecular weight cutoff range of 10,000-50,000 Da. It can trap whey protein colloids (molecular weight ≥10,000 Da) and some pathogenic bacteria (such as Listeria, size ≥0.8μm). It has a temperature resistance range of 0-60℃ and is resistant to acids and alkalis at pH 2-12. The third-stage filter element 11 is a polyvinylidene fluoride (PVDF) nanofiltration membrane filter element (500mm in length, 60mm in outer diameter, and 30mm in inner diameter), with a membrane pore size of 0.01-0.4μm. It can retain microorganisms such as Bacillus spores (0.5μm in size) and Brucella (0.6-1.5μm in size), with a retention rate of ≥99.99%, and is resistant to fouling (it can withstand the adhesion of fat and protein in camel milk). All three filter elements are fixed to the inner wall of the filter tank 2 via flanges (flange material: 304 stainless steel, bolt specification: M8×20mm), which facilitates replacement (replacement time ≤10 minutes / element).

[0043] During operation, staff first select the appropriate filter cartridges based on filtration requirements: primary filter cartridge 9 for primary filter tank 2, secondary filter cartridge 10 for secondary filter tank 2, and tertiary filter cartridge 11 for tertiary filter tank 3. The flange bolts are tightened to ensure a seal (no milk leakage). The camel milk to be processed first enters primary filter tank 2, where dust and coarse fibers are trapped by primary filter cartridge 9, and the clear liquid enters secondary filter tank 2. Secondary filter cartridge 10 traps whey protein colloids, preventing them from clogging tertiary filter cartridge 11. Finally, tertiary filter cartridge 11 traps spores and pathogens, and qualified camel milk is discharged. This three-stage gradient filtration avoids overloading a single filter cartridge, preventing clogging (extending filter cartridge lifespan from 15 days to 30 days), while ensuring thorough sterilization and solving the problem of existing single ultrafiltration membranes being unable to remove spores.

[0044] As attached Figure 3 To be continued Figure 4 As shown: In one embodiment of this utility model, the camel milk feeding assembly 4 includes a milk pump 401, a milk extraction pipe 402, a milk supply pipe 403, a milk inlet tee pipe 404, and a milk inlet control valve 405; the milk pump 401 is mounted on the mounting base 1; one end of the milk extraction pipe 402 is connected to the upper-level camel milk pretreatment equipment, and the other end of the milk extraction pipe 402 is connected to the input end of the milk pump 401; one end of the milk supply pipe 403 is connected to the output end of the milk pump 401, and the other end of the milk supply pipe 403 is connected to one end of the milk inlet tee pipe 404; the other two ends of the milk inlet tee pipe 404 are respectively connected to the milk inlet end of the filter tank 2 of the corresponding primary filtration assembly, and the milk inlet control valve 405 is located between the milk inlet tee pipe 404 and the filter tank 2.

[0045] The 401 milk pump is a sanitary diaphragm pump with an inlet diameter of DN50 and an outlet diameter of DN40. The flow rate can be adjusted (3-5m) via a variable frequency motor. 3 / h), adaptable to the output of different pretreatment equipment. The milk extraction pipe 402 and milk supply pipe 403 are 316L stainless steel corrugated pipes (lengths 2m and 1.5m respectively, pressure resistant 1.6MPa), with polished inner walls (roughness Ra0.4) to avoid milk residue. The pipe fittings use quick-release clamps (model TCDN50, material 304 stainless steel) for easy disassembly and cleaning. The milk inlet tee pipe 404 is an equal diameter tee (DN50, material 304 stainless steel) with a smooth inner wall (fluid resistance coefficient ≤0.1), ensuring even distribution of camel milk to the two parallel primary filter tanks 2 (flow deviation ≤5%). The milk inlet control valve 405 is a sanitary solenoid valve (model 2W-500-50, material 316L, seals made of food-grade silicone rubber), which can be controlled to open / close via PLC, with a response time ≤0.5s to prevent camel milk stagnation and spoilage.

[0046] During operation, the operator first connects the milk extraction pipe 402 to the outlet of the upper-level pretreatment equipment via a quick-connect clamp, and connects the milk supply pipe 403 to the milk inlet tee pipe 404. The two outlets of the milk inlet tee pipe 404 are connected to the milk inlet of the primary filter tank 2 via the milk inlet control valve 405. The operator then starts the milk pump 401 and adjusts the pump frequency according to the output of the pretreatment equipment (e.g., if the pretreatment output is 4m³ / h). 3 / h (pump frequency adjusted to 80%); open the two milk inlet control valves 405, and camel milk enters the milk pump 401 through the milk extraction pipe 402. After being pressurized, it enters the milk inlet tee pipe 404 through the milk supply pipe 403 and is evenly distributed to the two primary filter tanks 2. If one of the primary filter tanks 2 needs maintenance, close the corresponding milk inlet control valve 405, and the other filter tank 2 continues to work to ensure continuous production. With this feeding structure, camel milk is transported without dead corners, the milk residue rate is ≤0.1%, and it can realize the maintenance of one tank while the other tank is working, improving equipment utilization.

[0047] As attached Figure 1 To be continued Figure 4 As shown: In one embodiment of this utility model, the rinsing feed assembly 5 includes a water supply pipe 501, a water inlet tee pipe 502, and a water inlet control valve 503; one end of the water supply pipe 501 is connected to an external cleaning fluid storage tank, and the other end of the water supply pipe 501 is connected to one end of the water inlet tee pipe 502; the other two ends of the water inlet tee pipe 502 are respectively connected to the rinsing water inlet end of the corresponding filter tank 2, and the water inlet control valve 503 is disposed between the water inlet tee pipe 502 and the filter tank 2; the input end of the rinsing pump 6 is connected to the water supply pipe 501, and the output end of the rinsing pump 6 is connected to the water inlet tee pipe 502.

[0048] The water supply pipe 501 is a food-grade PVC-U pipe (3m long, 40mm diameter, 4mm wall thickness, temperature resistant from -10℃ to 60℃), with graduations printed on the outer wall (10mm accuracy) for easy observation of the cleaning fluid flow. The inlet tee pipe 502 is a PVC equal-diameter tee (DN40, 3mm wall thickness), with each branch equipped with a sealing ring (nitrile rubber, Shore A hardness 70A) to ensure leak-free connection to the flushing inlet of filter tank 2. The inlet control valve 503 is a PVC solenoid valve (model 2W-400-40, voltage 220V, nominal diameter DN40), which can independently control the flushing inlet of each filter tank 2, avoiding insufficient pressure due to simultaneous flushing (flushing pressure must be ≥0.3MPa). The flushing pump 6 is a sanitary diaphragm pump (model ISG40-125, material 304 stainless steel, flow rate 3m³ / h). 3 / h, head 15m), the inlet is equipped with a Y-type filter (pore size 1mm, material 304 stainless steel) to prevent impurities in the cleaning fluid from clogging the filter element.

[0049] During operation, the operator first connects the water supply pipe 501 to the external cleaning solution storage tank (containing 0.5% NaOH solution, temperature 40℃), opens the inlet valve of the flushing pump 6, and starts the flushing pump 6. If the primary filter tank 2 needs to be cleaned, open the corresponding inlet control valve 503 of the primary filter tank 2, close the valves of the milk inlet control valve 405 and the milk outlet tee pipe 301, and the cleaning solution enters the primary filter tank 2 through the water supply pipe 501, the flushing pump 6, and the inlet tee pipe 502, back-flushing the primary filter element 9 (removing trapped impurities); similarly, the secondary and tertiary filter tanks 2 can be cleaned separately, or two filter tanks 2 of the same level can be cleaned simultaneously (the pressure of the flushing pump 6 must be ensured to be ≥0.3MPa). Through this flushing and feeding structure, graded and tank-by-tank cleaning is achieved, saving 30% of the cleaning solution consumption. Compared with overall cleaning, the filter element cleaning is more thorough (residual impurities ≤0.01%).

[0050] As attached Figure 1 To be continued Figure 4 As shown: In one embodiment of this utility model, the flushing and discharging assembly 7 includes a water outlet pipe 701, a water outlet tee pipe 702, and a water outlet control valve 703; one end of the water outlet tee pipe 702 is connected to the flushing water outlet end of the filter tank 2, and the other end of the water outlet tee pipe 702 is connected to the water outlet pipe 701; one end of the water outlet pipe 701 is used to connect to an external sewage treatment device, and the water outlet control valve 703 is disposed between the water outlet tee pipe 702 and the water outlet pipe 701.

[0051] The outlet pipe 701 is a PVC-U pipe (4m long, 40mm in diameter, 4mm in wall thickness), and a flow meter (model LZS-40, range 0-5m) is installed on the pipe. 3The system monitors the discharge rate of the cleaning fluid (±2%) to determine if the filter element is clean (stable discharge rate and absence of impurities indicate successful cleaning). The outlet tee 702 is a PVC equal-diameter tee (DN40, 3mm wall thickness), with each branch connected to the flushing outlet of filter tank 2 via threads (thread specification G1.5, PTFE sealing tape), ensuring no leakage. The outlet control valve 703 is a PVC ball valve (model Q11 F-10S, DN40, PVC material, EPDM rubber seal), with an operating torque ≤5N·m, facilitating manual or automatic control (an electric actuator can be added).

[0052] During operation, the operator first connects the outlet pipe 701 to the inlet of the external sewage treatment equipment, and the branch of the outlet tee pipe 702 is connected to the flushing outlet of filter tank 2. The outlet control valve 703 is closed. When starting the flushing process, the outlet control valve 703 of the corresponding filter tank 2 is opened. The cleaning solution enters the outlet pipe 701 through the flushing outlet of filter tank 2 and the outlet tee pipe 702, and is finally discharged into the sewage treatment equipment. The flow meter reading is observed. If the reading increases from the initial 2m... 3 / h decreased to 1.5m 3 If the reading is / h, it indicates that the filter element is clogged and not cleaned properly, and the rinsing time needs to be extended; if the reading is stable at 2m... 3 The cleaning fluid is clear at a rate of / h, indicating that the cleaning is qualified. The water outlet control valve 703 and flushing pump 6 are then shut off. This flushing and discharge structure allows for real-time monitoring of the cleaning status, avoiding water waste caused by indiscriminate flushing and improving cleaning efficiency.

[0053] As attached Figure 1 To be continued Figure 2 As shown: In one embodiment of the present invention, each filter canister 2 is provided with an exhaust valve 8 at its top. The exhaust valve 8 is connected to the inside of the filter canister 2 and is used to exhaust the air inside the filter canister 2.

[0054] The exhaust valve 8 is a sanitary manual exhaust valve (model G1 / 2, material 304 stainless steel, valve core made of polytetrafluoroethylene), with an internal thread (G1 / 2) interface that connects to the exhaust port (external thread G1 / 2) on the top of the filter tank 2. The sealing gasket is made of food-grade silicone rubber (temperature resistant from -40℃ to 200℃) to ensure no milk leakage. The opening angle of the exhaust valve 8 is adjustable (0-90°). When the opening angle is 15°, exhaust is slow to prevent milk from spraying out with the air; when the opening angle is 90°, exhaust is rapid to meet the initial feeding and exhaust requirements of the filter tank 2.

[0055] During operation, before starting the milk pump 401, the operator first opens the vent valves 8 of all filter tanks 2 to 15°. As camel milk enters the filter tank 2, air inside the tank is slowly expelled through the vent valves 8. When a small amount of milk overflows from the outlet of the vent valve 8, it is closed (to avoid milk waste). If air bubbles are generated inside the filter tank 2 during filtration (such as dissolved air in the camel milk), the vent valves 8 can be opened again to 15° to expel the bubbles before closing. When cleaning the filter tank 2, the vent valves 8 must also be opened to expel air introduced by the cleaning solution, ensuring the cleaning solution fills the filter tank 2 and improving the cleaning effect. The vent valves 8 prevent "air resistance" caused by air inside the filter tank 2, ensuring that the camel milk or cleaning solution evenly fills the filter tank 2, resulting in stable filtration and cleaning efficiency.

[0056] As attached Figure 1 To be continued Figure 2 As shown: In one embodiment of this utility model, the number of filter canisters 2 of the primary filter component, the secondary filter component, and the tertiary filter component are all two. The two filter canisters 2 of the primary filter component are connected in parallel, the two filter canisters 2 of the secondary filter component are connected in parallel, and the two filter canisters 2 of the tertiary filter component are connected in parallel.

[0057] The two filter tanks 2 of the primary filtration assembly are connected in parallel via a milk inlet tee pipe 404 (milk inlet end) and a milk outlet tee pipe 301 (milk outlet end). Each filter tank 2 is equipped with a milk inlet control valve 405 at the milk inlet end and a milk outlet valve (sanitary ball valve, DN50, 304 stainless steel) at the milk outlet end. The two filter tanks 2 of the secondary and tertiary filtration assemblies are similarly connected in parallel, forming an overall process of "dual-tank parallel connection + three-stage series connection". The distance between the two filter tanks 2 at each level is 300mm, which facilitates maintenance by operators (such as replacing filter elements and cleaning the tank body). A pressure sensor (range 0-1.0MPa, accuracy ±0.02MPa) is installed on the milk outlet pipe of the filter tank 2 to monitor the filter element clogging (the filter element needs to be cleaned or replaced when the pressure is ≥0.5MPa).

[0058] During operation, the staff first open the inlet and outlet valves of the two filter tanks 2 at each level during normal production. Camel milk flows through the two parallel filter tanks 2 simultaneously, increasing the processing capacity to twice that of a single tank (e.g., a primary single tank can process 2.5m³). 3 / h, dual tanks in parallel processing 5m 3 / h); If the pressure sensor of one of the filter tanks 2 in the primary filtration assembly shows 0.6MPa (filter element clogged), close the milk inlet control valve 405 and the milk outlet valve of that filter tank 2, start the flushing process to clean the filter element, and the other filter tank 2 continues to work, reducing the processing capacity to 2.5m³. 3 / h, ensuring uninterrupted production; after the clogged filter tank 2 is cleaned, its inlet and outlet milk valves are reopened to restore the parallel operation of the two tanks. Through the parallel design of the two tanks, the continuous operation rate of the equipment is increased from 80% to 98%, avoiding production stoppages caused by maintenance of a single tank.

[0059] As attached Figure 1 To be continued Figure 4 As shown: In one embodiment of this utility model, a flow sensor is provided on the pipeline between the milk inlet control valve 405 and the filter tank 2. The flow sensor is used to monitor the flow rate of camel milk entering the filter tank 2.

[0060] The flow sensor is a sanitary turbine flow meter (model LWGY-50, material 316L stainless steel, nominal diameter DN50), with an accuracy of ±1.0% and a measuring range of 1-10m. 3 The sensor outputs a 4-20mA current signal per hour, which is connected to the PLC control system to display flow data in real time. The sensor is installed on the pipeline between the milk inlet control valve 405 and the milk inlet of the filter tank 2, with the installation direction aligned with the camel milk flow direction (arrow indication). The straight pipe sections before and after the sensor are 5 times the pipe diameter (250mm) and 3 times the pipe diameter (150mm) respectively, ensuring measurement accuracy (avoiding the influence of turbulence).

[0061] During operation, the operator first sets the rated flow rate of each filter tank 2 in the PLC control system (e.g., the rated flow rate of primary filter tank 2 is 2.5m³ / h). 3 / h); During the production process, the flow sensor collects the camel milk flow rate entering filter tank 2 in real time. If the flow rate of one of the primary filter tanks 2 drops to 2.0m³ / h, 3 When the flow rate drops below 20% of the rated value, the PLC issues a warning (indicator light flashing + buzzer), suggesting that filter tank 2 may have a clogged filter element or the milk inlet control valve 405 may not be fully open. The operator checks the status of the milk inlet control valve 405 (adjusting it to full open if not fully open). If the flow rate remains low, filter tank 2 is shut off for filter element cleaning. After cleaning, it is reopened, and the flow rate returns to 2.5 m³ / h. 3 / h, warning lifted. The flow sensor allows for real-time monitoring of the feeding status of each filter tank 2, enabling early detection of faults (such as filter element blockage), preventing a significant drop in throughput due to escalating faults, and improving the timeliness of equipment maintenance.

[0062] Working principle: Start the upper-level camel milk pretreatment equipment (such as a centrifuge), connect the milk extraction pipe 402 to the outlet of the pretreatment equipment; open the exhaust valves 8 to 15° of all filter tanks 2, and open the milk discharge control valve 302.

[0063] Start the milk pump 401 of the primary filtration unit and adjust the frequency to 40-60% (corresponding to a flow rate of 2.5-3.5m). 3 / h), camel milk is fed through milk extraction pipe 402, milk pump 401, milk supply pipe 403, milk inlet three-way pipe 404, and two parallel filter tanks 2; air in filter tank 2 is discharged through exhaust valve 8, and exhaust valve 8 is closed when a small amount of milk overflows from the exhaust port.

[0064] After primary filtration, camel milk enters the milk pump 401 of the secondary filtration component through the milk outlet three-way pipe 301, repeating the above process, and then passes through the secondary filter element 10 to remove colloids and some bacteria.

[0065] After secondary filtration, camel milk enters the milk pump 401 of the tertiary filtration assembly. The tertiary filter cartridge 11 traps spores and pathogens, and finally delivers the milk to the filling equipment through the milk discharge control valve 302.

[0066] The PLC automatically shuts off all milk pumps 401 and milk discharge control valves 302, opens the exhaust valves 8 to 90° of all filter tanks 2, and turns on the flushing pump 6.

[0067] Tank cleaning:

[0068] When the two inlet control valves 503 and outlet control valve 703 of the primary filter assembly are opened, the cleaning liquid flows through the water supply pipe 501, flushing pump 6, inlet tee pipe 502, and filter tank 2 to backwash the primary filter element 9. The sewage then flows out through the tee pipe 702 and outlet pipe 701 to reach the sewage treatment equipment.

[0069] After the primary cleaning is completed, close the primary inlet / outlet valves and clean the secondary and tertiary filter components in sequence.

[0070] After cleaning, turn off the rinsing pump 6 and all inlet / outlet valves, turn on the milk pump 401, and after venting the air according to the normal filtration process, resume production.

[0071] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-stage membrane filtration and camel milk sterilization integrated device, characterized in that: It includes a mounting base (1), several filter components, several camel milk feeding components (4), camel milk discharging components (3), rinsing feeding components (5), rinsing pump (6) and rinsing discharging components (7); Several filter components are mounted on the mounting base (1), and the filter components are connected in series in the order of primary filtration, secondary filtration and tertiary filtration. Each filter component includes a filter canister (2), and a filter element is provided inside the filter canister (2). The camel milk feeding assembly (4) is mounted on the mounting base (1). The output end of one of the camel milk feeding assemblies (4) is connected to the milk inlet end of the filter tank (2) of the primary filtration assembly, and is used to feed the camel milk to be processed into the filtration assembly. The camel milk discharging assembly (3) includes a milk discharging tee (301) and a milk discharging control valve (302). One end of the milk discharging tee (301) is connected to the milk outlet end of the filter tank (2). The other end of the milk discharging tee (301) of the primary filtration assembly is connected to the milk inlet end of the filter tank (2) of the secondary filtration assembly through one of the camel milk feeding assemblies (4). The other end of the milk discharging tee (301) of the secondary filtration assembly is connected to the milk inlet end of the filter tank (2) of the tertiary filtration assembly through one of the camel milk feeding assemblies (4). The milk discharging control valve (302) is located at the output end of the milk discharging tee (301) of the tertiary filtration assembly. The flushing feed assembly (5) is mounted on the mounting base (1), the input end of the flushing pump (6) is connected to the flushing feed assembly (5), and the output end of the flushing pump (6) is connected to the flushing water inlet of each filter tank (2). The flushing and discharge assembly (7) is connected to the flushing outlet of each filter tank (2) and is used to discharge the cleaning liquid.

2. The multi-stage membrane filtration and camel milk sterilization integrated device according to claim 1, characterized in that: The filter element includes a primary filter element (9), a secondary filter element (10), and a tertiary filter element (11); the primary filter element (9) is installed in the filter canister (2) of the primary filtration assembly, the secondary filter element (10) is installed in the filter canister (2) of the secondary filtration assembly, and the tertiary filter element (11) is installed in the filter canister (2) of the tertiary filtration assembly; the primary filter element (9) is a polypropylene microfiltration membrane filter element, the secondary filter element (10) is a polyethersulfone ultrafiltration membrane filter element, and the tertiary filter element (11) is a polyvinylidene fluoride nanofiltration membrane filter element.

3. The multi-stage membrane filtration and camel milk sterilization integrated device according to claim 1, characterized in that: The camel milk feeding assembly (4) includes a milk pump (401), a milk extraction pipe (402), a milk supply pipe (403), a milk inlet tee pipe (404), and a milk inlet control valve (405); The milk pump (401) is mounted on the mounting base (1), one end of the milk extraction pipe (402) is used to connect with the upper camel milk pretreatment equipment, and the other end of the milk extraction pipe (402) is connected to the input end of the milk pump (401). One end of the milk supply pipe (403) is connected to the output end of the milk pump (401), and the other end of the milk supply pipe (403) is connected to one end of the milk inlet tee pipe (404); The other two ends of the milk inlet tee (404) are respectively connected to the milk inlet end of the filter tank (2) of the corresponding primary filter component, and the milk inlet control valve (405) is set between the milk inlet tee (404) and the filter tank (2).

4. The multi-stage membrane filtration and camel milk sterilization integrated device according to claim 1, characterized in that: The flushing and feeding assembly (5) includes a water supply pipe (501), a water inlet tee pipe (502), and a water inlet control valve (503); One end of the water supply pipe (501) is used to connect to an external cleaning fluid storage tank, and the other end of the water supply pipe (501) is connected to one end of the water inlet tee pipe (502); The other two ends of the inlet tee (502) are respectively connected to the flushing inlet of the corresponding filter tank (2), and the inlet control valve (503) is set between the inlet tee (502) and the filter tank (2); The input end of the flushing pump (6) is connected to the water supply pipe (501), and the output end of the flushing pump (6) is connected to the water inlet tee pipe (502).

5. The multi-stage membrane filtration and camel milk sterilization integrated device according to claim 1, characterized in that: The flushing and discharge assembly (7) includes a water outlet pipe (701), a water outlet tee pipe (702), and a water outlet control valve (703); One end of the outlet tee (702) is connected to the flushing outlet of the filter tank (2), and the other end of the outlet tee (702) is connected to the outlet pipe (701); One end of the outlet pipe (701) is used to connect with external sewage treatment equipment, and the outlet control valve (703) is set between the outlet tee pipe (702) and the outlet pipe (701).

6. The multi-stage membrane filtration and camel milk sterilization integrated device according to claim 1, characterized in that: Each of the filter canisters (2) is provided with an exhaust valve (8) at the top, which is connected to the inside of the filter canister (2) and is used to exhaust the air inside the filter canister (2).

7. The multi-stage membrane filtration and camel milk sterilization integrated device according to claim 1, characterized in that: The primary filter assembly, secondary filter assembly, and tertiary filter assembly each have two filter canisters (2). The two filter canisters (2) of the primary filter assembly are connected in parallel, the two filter canisters (2) of the secondary filter assembly are connected in parallel, and the two filter canisters (2) of the tertiary filter assembly are connected in parallel.

8. The multi-stage membrane filtration and camel milk sterilization integrated device according to claim 3, characterized in that: A flow sensor is installed on the pipeline between the milk inlet control valve (405) and the filter tank (2). The flow sensor is used to monitor the flow rate of camel milk entering the filter tank (2).

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