Milk pre-treatment filtering device

Abstract

The utility model discloses a milk pretreatment filtering device relates to dairy processing equipment technical field, including support seat, the front end of support seat is installed with control system, one end of support seat is installed with two groups of ring seat, the upper end of support seat is installed with support seat, and the inner wall of support seat is installed with front -positioned slag -removing device, and the inside of two groups ring seat installs respectively first -stage filter cylinder and second -stage filter cylinder, and the upper end opening of front -positioned slag -removing device is fixed with liquid inlet pipe intercommunication. The utility model, grading filtration improves purification effect: through the three -stage filtration structure of "front -positioned slag -removing + first -stage filter cylinder + second -stage filter cylinder", intercepts big, medium, small particle impurity in proper order, can effectively remove various impurities in raw milk, avoids the abrasion of subsequent processing equipment, and guarantees the quality of finished dairy product.

Description

Technical Field

[0001] This utility model relates to the field of dairy processing equipment technology, and in particular to a milk pretreatment filtration device. Background Technology

[0002] In the dairy production process, milk pretreatment filtration is a key step in ensuring product quality. Its core function is to remove impurities such as hair, grass clippings, mud, and microbial clots from the raw milk, thus preventing wear and tear on subsequent processing equipment or affecting the quality of the finished product.

[0003] However, in existing technologies, traditional filtration devices often employ a single filtration stage or a simple two-stage filtration design. The connection between pre-filtration and graded filtration is not smooth enough, resulting in incomplete impurity interception. For example, some devices only use a single-layer filter screen for filtration, which cannot achieve graded removal of large, medium, and small particles. If a fine-pore filter screen is used, it is prone to clogging, requiring frequent shutdowns for cleaning and reducing production efficiency. If a coarse-pore filter screen is used, more tiny impurities remain, which can easily cause wear and tear on homogenizers, heat exchangers, and other equipment during subsequent processing, while also affecting the taste and purity of the finished dairy product. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a milk pretreatment and filtration device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a milk pretreatment filtration device, comprising a support base, a control system installed at the front end of the support base, two sets of annular seats installed at one end of the support base, a support base installed at the upper end of the support base, a pre-filter installed on the inner wall of the support base, a primary filter cartridge and a secondary filter cartridge respectively installed inside the two sets of annular seats, an inlet pipe fixedly connected to the upper opening of the pre-filter, a flow regulating valve fixedly installed at the upper end of the inlet pipe, a drain valve fixedly connected to the lower opening of the pre-filter, and a connecting pipe fixedly connected to the outer wall opening of the primary filter cartridge.

[0006] Preferably, the lower end of the drain valve is fixedly connected to the upper opening of the primary filter cartridge, and the other end of the connecting pipe is fixedly connected to the upper opening of the secondary filter cartridge.

[0007] Preferably, the lower openings of both the primary and secondary filter cartridges are fixedly connected to discharge valves, and the lower ends of both sets of discharge valves are fixedly connected to discharge pipes.

[0008] Preferably, both the flow regulating valve and the drain valve are connected to the control system signal, and both sets of the discharge valves are connected to the control system signal.

[0009] Preferably, a check valve is fixedly connected to the outer wall opening of the secondary filter cartridge, and a sampling valve is fixedly connected to the other end of the check valve. The check valve is connected to the control system signal.

[0010] Preferably, a water tank and a high-pressure pump are installed at the other end of the support base, and a diversion pipe is provided inside the support base. The two openings on the outer wall of the diversion pipe are fixedly connected to flushing pipes.

[0011] Preferably, one end of the diversion pipe penetrates the inner wall of the support base and is fixedly connected to the outlet end of the high-pressure pump; the other ends of the two sets of flushing pipes are fixedly connected to the upper openings of the primary filter cartridge and the secondary filter cartridge, respectively; the inlet end of the high-pressure pump is fixedly connected to the upper opening of the water tank; and the high-pressure pump is signal-connected to the control system.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the graded filtration improves the purification effect: through the three-stage filtration structure of "pre-filter + primary filter + secondary filter", large, medium and small particle impurities are intercepted in sequence, which can effectively remove various impurities in raw milk, avoid wear and tear on subsequent processing equipment, and ensure the quality of finished dairy products.

[0013] 2. In this utility model, intelligent control reduces operation and maintenance costs: the control system realizes automated control of processes such as flow regulation, sewage discharge, and cleaning, without the need for frequent manual intervention; the status of components such as discharge valve and check valve is fed back in real time, making it easy to detect faults in a timely manner; the convenient design of the sampling valve simplifies the filtration effect detection process, and the overall operation and maintenance efficiency is improved by more than %.

[0014] 3. In this utility model, online cleaning extends the filter element life: The backwash cleaning system can perform targeted rinsing of the filter elements of the primary and secondary filter cartridges, effectively removing impurities attached to the surface of the filter elements, avoiding filter element clogging, improving the service life of the filter elements, and reducing filter element replacement costs; at the same time, the cleaning process does not require disassembling the equipment, avoiding secondary pollution. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a milk pretreatment filtration device; Figure 2 This utility model provides a front structural diagram of a milk pretreatment filtration device; Figure 3 This utility model provides a structural schematic diagram of a pre-removal device, a primary filter cartridge, and a secondary filter cartridge for a milk pretreatment filtration device. Figure 4 This invention provides a partial rear structure diagram of a milk pretreatment filtration device.

[0016] Legend: 1. Support base; 2. Control system; 3. Circular seat; 4. Support base; 5. Pre-filter; 6. Primary filter cartridge; 7. Secondary filter cartridge; 8. Inlet pipe; 9. Flow regulating valve; 10. Water tank; 11. High-pressure pump; 12. Drain valve; 13. Discharge valve; 14. Discharge pipe; 15. Connecting pipe; 16. Check valve; 17. Sampling valve; 18. Diverter pipe; 19. Flushing pipe. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a milk pretreatment filtration device, including a support base 1, a control system 2 installed at the front end of the support base 1, two sets of annular seats 3 installed at one end of the support base 1, a support base 4 installed at the upper end of the support base 1, a pre-filter 5 installed on the inner wall of the support base 4, a primary filter cartridge 6 and a secondary filter cartridge 7 respectively installed inside the two sets of annular seats 3, an inlet pipe 8 fixedly connected to the upper opening of the pre-filter 5, a flow regulating valve 9 fixedly installed at the upper end of the inlet pipe 8, and a fixed lower opening of the pre-filter 5. A drain valve 12 is connected to the outer wall opening of the primary filter cartridge 6, and a connecting pipe 15 is fixedly connected to it. The lower end of the drain valve 12 is fixedly connected to the upper opening of the primary filter cartridge 6, and the other end of the connecting pipe 15 is fixedly connected to the upper opening of the secondary filter cartridge 7. The lower openings of both the primary filter cartridge 6 and the secondary filter cartridge 7 are fixedly connected to the discharge valve 13, and the lower ends of both sets of discharge valves 13 are fixedly connected to the discharge pipe 14. The flow regulating valve 9 and the drain valve 12 are both connected to the control system 2. The two sets of discharge valves 13 are both connected to the control system 2. The outer wall opening of the secondary filter cartridge 7 is fixedly connected to a check valve 16, and the other end of the check valve 16 is fixedly connected to a sampling valve 17. The check valve 16 is connected to the control system 2 via signal.

[0020] The specific settings and functions of this embodiment are described in detail below. The support base 1, as the basic support component of the device, is welded from high-strength stainless steel profiles. It is equipped with adjustable anchor bolts at the bottom, which can be leveled according to the flatness of the ground to ensure the stability of the device during operation. The spatial layout of the support base 1 has been optimized: the front end has a reserved installation position for fixing the control system 2, which is convenient for operators to monitor and operate in real time; two sets of circular seats 3 are symmetrically set at one end, which are fixed to the circular seats 3 with bolts to provide stable support for the primary filter cartridge 6 and the secondary filter cartridge 7. The inner wall of the circular seat 3 is equipped with a buffer rubber pad to absorb the vibration generated during the filtration process; the upper end is welded with an integrated support base 4. The inner wall of the support base 4 is tightly fixed to the outer wall of the pre-filter 5 with a clamp to ensure that the pre-filter 5 does not shift during operation; the other end is planned with an independent installation area for fixing the water tank 10 and the high-pressure pump 11. At the same time, a pipeline laying channel is reserved inside to hide the pipelines such as the diversion pipe 18, improving the overall neatness of the device.

[0021] The liquid inlet filtration system consists of an inlet pipe 8, a flow regulating valve 9, a pre-slag remover 5, and a drain valve 12. Its main function is to achieve the smooth introduction of raw milk and complete the initial slag removal.

[0022] The inlet pipe 8 is made of food-grade stainless steel. One end is connected to the outlet of the raw milk storage tank, and the other end is fixedly connected to the upper opening of the pre-filter 5 through a flange to ensure a tight connection. The flow regulating valve 9 is an electric regulating butterfly valve, which is fixedly installed at the upper end of the inlet pipe 8 and establishes a signal connection with the control system 2. According to the subsequent filtration load requirements, the raw milk feeding rate can be precisely adjusted by the control system 2 to avoid filter blockage due to excessive feeding or production efficiency affected by excessively slow feeding.

[0023] The pre-filter 5 adopts a conical structure design with a conical filter screen inside. The conical structure allows the raw milk to form a spiral flow inside, using centrifugal force to throw large particles of impurities (such as grass clippings, mud, hair, etc.) to the inner wall of the filter screen and deposit them to the bottom. The shell of the filter is made of thickened stainless steel to ensure stable operation under negative or positive pressure conditions.

[0024] The drain valve 12 is a quick-opening electric ball valve, which is fixedly connected to the lower opening of the pre-mounted slag remover 5 and is linked to the control system 2. The control system 2 can preset the drain cycle, and automatically open the drain valve 12 when the time comes to quickly discharge the deposited large particles of impurities. After the drain is completed, it will automatically close without manual intervention, effectively reducing operation and maintenance costs.

[0025] The primary filter cartridge 6 is installed inside a set of circular seats 3. Its upper opening is fixedly connected to the lower end of the drain valve 12 via a flange, receiving the raw milk after preliminary filtration by the pre-filter 5. The filter cartridge is equipped with a detachable stainless steel woven mesh filter element, which is mainly used to intercept medium-sized particulate impurities (such as fine mud, feed residue, etc.) in the raw milk. The filter element adopts a drawer-type structure, which cooperates with the groove on the inner wall of the filter cartridge. It can be quickly disassembled and installed without tools, which is convenient for later cleaning and replacement. The secondary filter cartridge 7 is installed inside another set of annular seats 3 and is connected in series with the primary filter cartridge 6 through a connecting pipe 15. One end of the connecting pipe 15 is fixedly connected to the opening in the middle of the outer wall of the primary filter cartridge 6, and the other end is connected to the upper opening of the secondary filter cartridge 7, so that the milk after primary filtration flows smoothly into the secondary filter cartridge 7. The secondary filter cartridge 7 is equipped with a glass fiber composite filter element, which can accurately capture tiny particulate impurities (such as microbial clots, fine dust, etc.) in the raw milk. The filter element is fitted with a hollow stainless steel support frame to prevent the filter element from deforming under working pressure and ensure stable filtration accuracy. Both the lower openings of the primary filter cartridge 6 and the secondary filter cartridge 7 are fixedly connected to discharge valves 13. The discharge valves 13 are electric shut-off valves, which are connected to the control system 2 and can be individually controlled to open and close according to the filtration conditions. The lower ends of both discharge valves 13 are connected to discharge pipes 14. The discharge pipe 14 of the primary filter cartridge 6 can be used as an emergency discharge channel. When the secondary filter cartridge 7 malfunctions, the valve of the connecting pipe 15 can be closed by the control system 2 and the discharge valve 13 of the primary filter cartridge 6 can be opened to temporarily discharge the milk that has been filtered in the primary stage. The discharge pipe 14 of the secondary filter cartridge 7 serves as the main discharge channel, which transports the finally filtered milk to subsequent processing equipment (such as homogenizers and sterilizers).

[0026] Check valve 16 is fixedly connected to the opening in the middle of the outer wall of the secondary filter cartridge 7 to prevent backflow of clean milk after secondary filtration, thus avoiding contamination of the filtered milk or affecting filtration efficiency. Check valve 16 is connected to the control system 2 for real-time feedback on the valve's opening and closing status. Sampling valve 17 is fixedly connected to the other end of check valve 16 and is located on the operating side of the device, facilitating operators to periodically extract samples of filtered milk. The valve port of sampling valve 17 is equipped with a dustproof sealing cap. When sampling, opening the sealing cap allows for precise extraction of a small amount of sample through the needle valve to test indicators such as impurity level and purity, verify the filtration effect, and ensure that product quality meets requirements.

[0027] The control system 2 is fixedly installed at the front end of the bracket 1. It uses a PLC controller as the core control unit and is equipped with a 7-inch color touch screen to realize real-time monitoring and automated control of the device's operating status. The control system 2 establishes signal connections with the flow regulating valve 9, the drain valve 12, the discharge valve 13, the check valve 16, the high-pressure pump 11 and other actuators.

[0028] Example 2: Figure 1 , Figure 2 and Figure 4 As shown, a water tank 10 and a high-pressure pump 11 are installed at the other end of the support base 1. A diversion pipe 18 is provided inside the support base 1. Two openings on the outer wall of the diversion pipe 18 are fixedly connected to flushing pipes 19. One end of the diversion pipe 18 passes through the inner wall of the support base 1 and is fixedly connected to the outlet end of the high-pressure pump 11. The other ends of the two sets of flushing pipes 19 are fixedly connected to the upper openings of the first-stage filter cartridge 6 and the second-stage filter cartridge 7, respectively. The inlet end of the high-pressure pump 11 is fixedly connected to the upper opening of the water tank 10. The high-pressure pump 11 is connected to the control system 2 via signal.

[0029] The overall effect of this embodiment is that the water tank 10 has a sealed cover at the upper water inlet to prevent dust and other impurities from falling in; the water inlet of the high-pressure pump 11 is fixedly connected to the upper opening of the water tank 10 through a pipe, and the water outlet is connected to the diversion pipe 18. The high-pressure pump 11 is linked with the control system 2 and can adjust the output pressure according to the cleaning needs to provide sufficient power for cleaning. The diversion pipe 18 is concealed inside the support base 1 and is made of DN32 food-grade stainless steel. One end of it penetrates the inner wall of the support base 1 and is fixedly connected to the outlet end of the high-pressure pump 11. The outer wall has two branch openings, which are fixedly connected to two sets of flushing pipes 19 respectively. The other end of the flushing pipe 19 is fixedly connected to the upper opening of the first-stage filter cartridge 6 and the second-stage filter cartridge 7 respectively, and the outlet end of the flushing pipe 19 extends into the inside of the filter cartridge, facing the upper end face of the filter element. During cleaning, the high-pressure pump 11 pressurizes the clean water in the water tank 10 and delivers it to the diversion pipe 18. The water is then distributed to the two sets of flushing pipes 19. The high-pressure water flow directly impacts the surface of the filter element, washing away the impurities attached to the filter element. The wastewater after rinsing is discharged through the discharge valve 13 at the lower end of the filter cartridge.

[0030] The operation and working principle of this device: Preparation stage: The operator opens the water tank 10 through the control system 2 to add water to the set liquid level, checks whether the initial state of each valve is normal, and starts the device after confirming that there is no problem. Liquid inlet filtration stage: Control system 2 opens flow regulating valve 9, and raw milk flows into pre-detergent 5 through liquid inlet pipe 8. Under the action of conical filter screen, large particles of impurities are intercepted. After the impurities are deposited to the bottom, control system 2 opens drain valve 12 to discharge the impurities according to preset cycle. Staged filtration: After pre-removal of residue, milk flows into the first-stage filter cartridge 6 through the drain valve 12, where the stainless steel woven mesh filter element intercepts particulate impurities; then, the milk enters the second-stage filter cartridge 7 through the connecting pipe 15, where the glass fiber composite filter element filters out tiny impurities; finally, the filtered clean milk is transported to subsequent equipment through the check valve 16, the discharge valve 13 and the discharge pipe 14. Operators can periodically take samples through the sampling valve 17 to test the filtration effect. Backwashing stage: When the device reaches the preset cleaning cycle or the filtration pressure is too high, the control system 2 automatically closes the flow regulating valve 9 and the discharge valve 13, and turns on the high-pressure pump 11. Clean water flows through the diversion pipe 18 and the flushing pipe 19 to impact the filter elements of the first and second stage filter cartridges under high pressure. The wastewater generated during flushing is discharged through the open drain valve 12 and the discharge valve 13. After cleaning is completed, the control system 2 turns off the high-pressure pump 11, restores all valves to the filtration state, and the device continues to operate.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A milk pretreatment filtration device, comprising a support base (1), characterized in that: The front end of the support base (1) is equipped with a control system (2), one end of the support base (1) is equipped with two sets of annular seats (3), the upper end of the support base (1) is equipped with a support seat (4), the inner wall of the support seat (4) is equipped with a pre-filter (5), the two sets of annular seats (3) are respectively equipped with a primary filter cartridge (6) and a secondary filter cartridge (7), the upper opening of the pre-filter (5) is fixedly connected to an inlet pipe (8), the upper end of the inlet pipe (8) is fixedly equipped with a flow regulating valve (9), the lower opening of the pre-filter (5) is fixedly connected to a drain valve (12), and the outer wall opening of the primary filter cartridge (6) is fixedly connected to a connecting pipe (15).

2. The milk pretreatment filtration device according to claim 1, characterized in that: The lower end of the drain valve (12) is fixedly connected to the upper opening of the primary filter cylinder (6), and the other end of the connecting pipe (15) is fixedly connected to the upper opening of the secondary filter cylinder (7).

3. The milk pretreatment filtration device according to claim 2, characterized in that: The lower openings of the primary filter cartridge (6) and the secondary filter cartridge (7) are both fixedly connected to discharge valves (13), and the lower ends of the two sets of discharge valves (13) are both fixedly connected to discharge pipes (14).

4. The milk pretreatment filtration device according to claim 3, characterized in that: The flow regulating valve (9) and the drain valve (12) are both connected to the control system (2) via signal, and the two sets of discharge valves (13) are both connected to the control system (2) via signal.

5. The milk pretreatment filtration device according to claim 1, characterized in that: The outer wall opening of the secondary filter cartridge (7) is fixedly connected to a check valve (16), and the other end of the check valve (16) is fixedly connected to a sampling valve (17). The check valve (16) is signal-connected to the control system (2).

6. The milk pretreatment filtration device according to claim 1, characterized in that: A water tank (10) and a high-pressure pump (11) are installed at the other end of the support base (1). A diversion pipe (18) is provided inside the support base (1). Two openings on the outer wall of the diversion pipe (18) are fixedly connected to a flushing pipe (19).

7. The milk pretreatment filtration device according to claim 6, characterized in that: One end of the diversion pipe (18) penetrates the inner wall of the support base (1) and is fixedly connected to the outlet end of the high pressure pump (11). The other ends of the two sets of flushing pipes (19) are fixedly connected to the upper openings of the first-stage filter cylinder (6) and the second-stage filter cylinder (7), respectively. The inlet end of the high pressure pump (11) is fixedly connected to the upper opening of the water tank (10). The high pressure pump (11) is signal-connected to the control system (2).

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