A double filter for extraction tank

Abstract

This utility model provides a dual-stage filter for an extraction tank, comprising two filters. Each filter includes a cylindrical body and a cap. The cylindrical body contains a ring support plate and an inner barrel. The ring support plate is located on the inner wall of the cylindrical body. The inner barrel includes a barrel body and a first support ring plate. A filter bag is placed inside the barrel, comprising a bag body and a second support ring. A hollow upper baffle plate is detachably provided above the second support ring. The first support ring plate, the second support ring, and the upper baffle plate cooperate with each other. The cylindrical body also includes a spray component and a guide pipe. The spray component is connected to the inner wall of the cap. One end of the guide pipe is located inside the filter bag, and the other end of the guide pipe is connected to an inlet branch pipe. The cylindrical body is also connected to an outlet branch pipe. The inlet branch pipes of the two filters are connected in parallel to the inlet pipe, and the outlet branch pipes of the two filters are connected in parallel to the outlet pipe. This dual-stage filter for an extraction tank, as provided by this utility model, mainly improves the sealing performance of the device, ensuring that the filtered liquid material is nearly 100% filtered, meeting production quality requirements.

Description

Technical Field

[0001] This utility model belongs to the technical field of traditional Chinese medicine manufacturing equipment, and relates to a dual-stage filter for an extraction tank. Background Technology

[0002] In the production process of traditional Chinese medicine extraction, the extract obtained by adding water to the material is discharged through a pipeline under gravity. After passing through a filter, the filtrate is transferred to the next process. Due to the uneven end face of the supporting annular gasket of the original filter inner cylinder, fine particles leak from the filter cylinder baffle joint into the filtered extract during the filter process, flowing out along the outlet. This causes frequent clogging of the extract nozzle during the subsequent granulation process, affecting product quality. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a dual-stage filter for extraction tanks, which ensures the sealing of the device, prevents leakage of impurity-containing liquid medicine that may lead to filtration failure, and ensures that the liquid medicine passing through the filter is almost 100% filtered to meet production quality requirements.

[0004] To achieve the above and other related objectives, this utility model provides a dual-stage extraction tank filter, comprising two filters. Each filter includes a cylindrical body and a cap. The cylindrical body is hollow and detachably connected to the cap. A ring support plate and an inner barrel are provided inside the cylindrical body. The ring support plate is disposed on the inner wall of the cylindrical body. The inner barrel includes a barrel body and a first support ring plate. The barrel body is hollow and open at the top. The first support ring plate is connected to the top of the barrel body. The barrel body is detachably fitted inside the ring support plate, and the first support ring plate cooperates with the ring support plate. A filter bag is provided inside the barrel body. The filter bag includes a bag body and a second support ring. The filter bag is hollow and open at the top. It is detachably fitted into the barrel. A hollow upper baffle plate is detachably provided above the second support ring. The first support ring plate, the second support ring, and the upper baffle plate cooperate to detachably fix the second support ring between the first support ring plate and the upper baffle plate. The barrel is also provided with a spray component and a guide pipe. The spray component is connected to the inner wall of the cover. One end of the guide pipe is located inside the filter bag, and the other end of the guide pipe is connected to the liquid inlet branch pipe. The barrel is also connected to the liquid outlet branch pipe. The liquid inlet branch pipes of the two filters are connected in parallel to the liquid inlet pipe, and the liquid outlet branch pipes of the two filters are connected in parallel to the liquid outlet pipe.

[0005] Preferably, the cylinder and the cover are provided with a locking unit. The locking unit includes a locking screw and a support. One end of the support is connected to the outer wall of the cylinder. The lower end of the locking screw is fixed inside the support. A locking nut and a locking pressure ring are sequentially sleeved on the outside of the locking screw from top to bottom. The locking pressure ring is fixedly sleeved on the outside of the locking screw, and the lower end of the locking pressure ring contacts the outer edge of the cover. The locking nut is sleeved on the outside of the locking screw and is movably threaded. A locking handle is provided through the upper end of the locking nut so that the locking handle can rotate to drive the locking nut to move up and down, thereby pressing down or releasing up the locking pressure ring.

[0006] More preferably, the locking handle includes a hand-held section that passes through the locking nut and slides back and forth within the locking nut. Each end of the hand-held section is provided with a fixing section. The diameter of the fixing section perpendicular to the axial direction of the hand-held section is larger than the diameter of the hole in the locking nut through which the hand-held section passes, so as to fix the hand-held section inside the locking nut.

[0007] More preferably, the number of locking units is 3-4.

[0008] Preferably, a third sealing ring layer is provided on the contact surface between the cap and the cylinder.

[0009] More preferably, the bottom surface of the cover 102 has an upwardly recessed third sealing groove, and a third sealing ring is embedded in the third sealing groove.

[0010] Preferably, the cover is provided with an observation mirror.

[0011] Preferably, the bottom of the cylinder is provided with several support legs.

[0012] More preferably, the number of supporting legs is not less than three.

[0013] Preferably, the spray element is a cleaning spray ball, and the cleaning spray ball is externally connected to a water supply pipe.

[0014] More preferably, the spraying direction of the spraying component is directly opposite the bag body of the filter bag.

[0015] Preferably, the guide pipe is clamped to the inner wall of the fixed cylinder and connected to the liquid inlet branch pipe. The liquid inlet branch pipe is provided with a first connecting valve, and the liquid inlet branch pipes on both sides of the first connecting valve are respectively provided with a first clamp.

[0016] Preferably, a second connecting valve is provided on the liquid outlet branch pipe, and a second clamp is provided on the liquid outlet branch pipe on both sides of the second connecting valve.

[0017] Preferably, the surface of the barrel is provided with a plurality of first filter holes.

[0018] Preferably, the ring support plate and the first support ring plate are hollow ring plates. One end of the ring support plate is connected to the inner wall of the cylinder along the circumference of the cylinder, and the other end of the ring support plate protrudes inward along the horizontal radial direction of the cylinder. A first sealing ring layer is provided on the top surface of the ring support plate. One end of the first support ring plate is connected to the top of the cylinder along the circumference of the cylinder, and the other end of the first support ring plate protrudes outward along the horizontal radial direction of the cylinder. The first support ring plate is stacked on the ring support plate.

[0019] More preferably, the width of the ring support plate along the horizontal radial direction of the cylinder is not less than the width of the first support ring plate along the horizontal radial direction of the cylinder.

[0020] More preferably, the top surface of the ring support plate has a downwardly recessed first sealing groove, and a first sealing ring layer is embedded in the first sealing groove.

[0021] Preferably, the surface of the bag is provided with a plurality of second filter holes.

[0022] More preferably, the pore size of the second filter pore is smaller than that of the first filter pore.

[0023] Preferably, the second support ring is hollow and one end of the second support ring is connected to the top of the bag body along the circumference of the bag body, and the second support ring is stacked on the first support ring plate.

[0024] Preferably, the upper baffle plate is in the shape of a hollow ring plate, and a second sealing ring layer is provided on the bottom surface of the upper baffle plate. The upper baffle plate is detachably stacked on the second support ring.

[0025] More preferably, the bottom surface of the upper baffle plate has an upwardly recessed second sealing groove, and a second sealing ring layer is embedded in the second sealing groove.

[0026] More preferably, the width of the upper baffle plate along the horizontal radial direction of the cylinder is not less than the width of the first support ring plate along the horizontal radial direction of the cylinder.

[0027] Preferably, the upper retaining ring plate, the first supporting ring plate, and the ring support plate are provided with a plurality of screw holes that correspond one-to-one. The ring support plate is provided with a plurality of fastening bolts. The fastening bolts include a detachable threaded screw and a wing nut. The number of screws is the same as the number of screw holes. The screw passes through the screw holes of the upper retaining ring plate, the first supporting ring plate, and the ring support plate from top to bottom and connects to the inner wall of the screw hole of the ring support plate. The upper retaining ring plate and the first supporting ring plate are detachably fixed by the screw and the wing nut so that the second supporting ring is fixed between the upper retaining ring plate and the first supporting ring plate.

[0028] More preferably, the screw hole on the ring support plate is located in the area between the first sealing ring layer and the inner wall of the cylinder, and the screw hole on the upper baffle ring plate is located in the area next to the second sealing ring layer and close to the inner wall of the cylinder.

[0029] As described above, the dual-stage filter for extraction tanks provided by this utility model has the following beneficial effects: (1) The present invention provides a dual-filter for extraction tanks, which can realize parallel filtration of two filters, and is particularly suitable for filtering extract materials containing a small amount of solid impurities.

[0030] (2) The dual-stage filter for extraction tank provided by this utility model addresses the problem that the inevitable wrinkles and gaps caused when the circular filter bag is unfolded and laid flat on the end face of the first support ring plate will cause the impurity-containing medicine to flow out through these gaps, resulting in filtration failure. A second support ring is provided, and a second sealing ring layer is provided between the end face of the second support ring and the first support ring plate. This can compress the wrinkled filter bag, maximize the compaction of the filter bag, reduce the generation of gaps, and thus construct a filtration and sealing defense line. (3) The dual-stage filter for extraction tank provided by this utility model thickens and widens the ring support plate of the inner tank, improves the flatness of the end face of the ring support plate, and provides a first sealing ring layer on the upper end face of the ring support plate, thereby ensuring the effectiveness of the sealing defense line.

[0031] (4) The present invention provides a dual-stage filter for extraction tanks, which provides a third sealing ring layer on the contact end face between the cylinder and the cap, so that the filter is a closed cylinder with no leakage, thus ensuring the sealing requirements of the drug solution filtration.

[0032] (5) The present invention provides a dual-stage filter for extraction tanks, which enables the medicinal liquid material to be filtered almost 100% and meets the production quality requirements.

[0033] (6) The extraction tank dual filter provided by this utility model is ingeniously designed and easy to use, and is very worthy of being promoted and applied in existing practical work. Attached Figure Description

[0034] Figure 1 The diagram shown is a schematic representation of the overall structure of a dual-stage filter for an extraction tank according to this invention.

[0035] Figure 2 The diagram shown is a schematic diagram of the internal structure of a dual-stage extraction tank filter according to this utility model.

[0036] Figure Labels 1 filter 101 cylinder 102 caps 103 Third sealing ring layer 104 Third Sealing Groove 2-ring support plate 21 First sealing ring layer 22 First sealing groove 3 Inner Buckets 31 barrels 32 First support ring plate 4 filter bags 41 bags 42 Second support ring 5 Upper baffle plate 51 Second sealing ring layer 52 Second sealing groove 6 spray components 7. Guide tubes 8 Inlet branch pipes 9. Outlet branch pipe 10 Inlet Pipe 11. Discharge tube 12 locking units 121 Locking Nut 122 locking screw 123 supports 124 locking pressure ring 13 Locking Handle 131 handheld segment 132 fixed section 14 supporting legs 15 First connecting valve 16 Second connecting valve 17 First clamp 18 Second clamp 19 Fastening Bolts 191 screw 192 wing nuts Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0038] Please see Figures 1 to 2 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0039] This utility model provides a dual-stage filter for an extraction tank, such as... Figure 1-2 As shown, the system includes two filters 1. Each filter 1 includes a cylindrical body 101 and a cap 102. The cylindrical body 101 is hollow and detachably connected to the cap 102. Inside the cylindrical body 101, there is a ring support plate 2 and an inner barrel 3. The ring support plate 2 is located on the inner wall of the cylindrical body 101. The inner barrel 3 includes a barrel body 31 and a first support ring plate 32. The barrel body 31 is hollow and open at the top. The first support ring plate 32 is connected to the top of the barrel body 31. The barrel body 31 is detachably fitted inside the ring support plate 2, and the first support ring plate 32 cooperates with the ring support plate 2. Inside the barrel body 31, there is a filter bag 4. The filter bag 4 includes a bag body 41 and a second support ring 42. The bag body 41 is hollow and open at the top. The bag body 41 is detachably fitted inside the barrel body 31. A hollow upper baffle plate 5 is detachably provided above the second support ring 42. The first support ring plate 32, the second support ring 42, and the upper baffle plate 5 cooperate to detachably fix the second support ring 42 between the first support ring plate 32 and the upper baffle plate 5. The barrel body 101 is also provided with a spray component 6 and a guide pipe 7. The spray component 6 is connected to the inner wall of the cover 102. One end of the guide pipe 7 is located inside the filter bag 4, and the other end of the guide pipe 7 is connected to the liquid inlet branch pipe 8. The barrel body 101 is also connected to the liquid outlet branch pipe 9. The liquid inlet branch pipes 8 of the two filters 1 are connected in parallel to the liquid inlet pipe 10, and the liquid outlet branch pipes 9 of the two filters 1 are connected in parallel to the liquid outlet pipe 11.

[0040] In the above-mentioned extraction tank dual filter, such as Figure 1 As shown, a locking unit 12 is provided outside the cylinder 101 and the cover 102. The locking unit 12 includes a locking screw 122 and a support 123. One end of the support 123 is connected to the outer wall of the cylinder 101. The lower end of the locking screw 122 is fixed inside the support 123. A locking nut 121 and a locking pressure ring 124 are sequentially sleeved on the outside of the locking screw 122 from top to bottom. The locking pressure ring 124 is fixedly sleeved on the outside of the locking screw 122, and the lower end of the locking pressure ring 124 contacts the outer edge of the cover 102. The locking nut 121 is sleeved on the outside of the locking screw 122 and is movably threaded. A locking handle 13 is provided through the upper end of the locking nut 121 so that the locking handle 13 rotates and drives the locking nut 121 to move up and down, thereby pressing down or releasing the locking pressure ring 124.

[0041] The aforementioned locking unit 12 is a specially designed locking structure. By rotating the locking handle 13 clockwise in the circumferential direction, the locking nut 121 moves downward along the thread of the locking screw 122, and the locking pressure is applied to the locking ring 124 through the locking nut 121. This causes the lower end of the locking ring 124, which is in contact with the outer edge of the cover 102, to press downward against the contact surface between the cylinder 101 and the cover 102, thereby locking the cylinder 101 and the cover 102. Conversely, by rotating the locking handle 13 counterclockwise in the circumferential direction, the locking nut 121 moves upward along the threaded outer edge of the locking screw 122, releasing the locking pressure applied to the locking ring 124 by the locking nut 121. This causes the lower end of the locking nut 121 to loosen upward and disengage from the locking ring 124, thereby releasing the locking ring 124 and contacting the outer edge of the cover 102, allowing the cover 102 to be disassembled from the cylinder 101. The aforementioned locking unit 12 makes the disassembly and locking of the cylinder 101 and the cover 102 more convenient.

[0042] In one implementation, such as Figure 1 As shown, the locking handle 13 includes a hand-held section 131, which passes through the locking nut 121 and slides back and forth within the locking nut 121. The two ends of the hand-held section 131 are respectively provided with fixing sections 132. The diameter of the fixing section 132 along the axis perpendicular to the hand-held section 131 is larger than the diameter of the hole in the locking nut 121 through which the hand-held section 131 passes, so as to fix the hand-held section 131 within the locking nut 121.

[0043] This allows the locking handle 13 to be movably and fixedly connected within the locking nut 121. Specifically, the locking handle 13 is secured to the locking nut 121 by the fixing section 132, while the handle can slide back and forth within the locking nut 121 via the hand grip section 131. This makes disassembly and assembly more convenient, eliminating the need for other tools and allowing the locking handle 13 to rotate effectively.

[0044] In one embodiment, the number of locking units 12 is 3-4, preferably 4.

[0045] In the above-mentioned extraction tank dual filter, such as Figure 1 As shown, a third sealing ring 103 is provided on the contact surface between the cap 102 and the cylinder 101. The third sealing ring 103 plays a sealing role. After the locking unit 12 is fixed, the filter 1 becomes a closed cylinder with no leakage, ensuring the sealing requirements of the medicine filtration.

[0046] In one embodiment, the third sealing ring layer 103 is made of silicone. The third sealing ring layer 103 is an elastic silicone sealing ring.

[0047] In one implementation, such as Figure 1As shown, the bottom surface of the cover 102 has an upwardly recessed third sealing groove 104, and a third sealing ring layer 103 is embedded in the third sealing groove 104.

[0048] The cylinder 102 can be covered by the cap 102, and a seal is formed between the end faces of the cylinder 101 and the cap 102 by the third sealing ring 104. Then, the locking unit 12 is operated by the locking handle 13 to fasten the cylinder and the cap.

[0049] The aforementioned cylinder 101 and cap 102 form a fully enclosed environment, avoiding interference from the external environment and ensuring the quality of drug production.

[0050] In the aforementioned dual-stage filter for the extraction tank, the cover 102 is equipped with an observation lens. The observation lens is a conventionally used transparent glass lens, used to observe the filtration process inside the cylinder 101 and the cleanliness after cleaning.

[0051] In the above-mentioned extraction tank dual filter, such as Figure 1 As shown, the cylinder 101 is a hollow cylinder; the diameter of the cylinder 101 is 300-400mm, preferably 350mm; the height of the cylinder 101 is 500-700mm, preferably 600mm.

[0052] In the above-mentioned extraction tank dual filter, such as Figure 1 As shown, the bottom of the cylinder 101 is provided with several support legs 14 for supporting and fixing the filter 1.

[0053] In one embodiment, the number of support legs 14 is not less than three, preferably three.

[0054] In the above-mentioned extraction tank dual filter, such as Figure 1 As shown, the spray element 6 is a cleaning spray ball, and a water supply pipe is connected to the outside of the cleaning spray ball. The cleaning spray ball is a conventionally used cleaning spray ball, which can automatically or manually clean the inside of the cylinder 101 360° without dead angles, thereby enabling continuous production and improving production efficiency.

[0055] In one implementation, such as Figure 1 As shown, the spraying direction of the spraying component 6 is directly facing the bag body 41 of the filter bag 4. In particular, it can perform targeted cleaning of the inside of the cylinder 101, and flush the filtrate impurities into the bag body 41 of the filter bag 4, making replacement and cleaning more convenient.

[0056] In the above-mentioned extraction tank dual filter, such as Figure 1As shown, the guide pipe 7 is snapped onto the inner wall of the fixed cylinder 101 and connected to the liquid inlet branch pipe 8. The liquid inlet branch pipe 8 is provided with a first connecting valve 15. The liquid inlet branch pipes 8 on both sides of the first connecting valve 15 are respectively provided with first clamps 17 for the liquid inlet branch pipes 8 to be detachably connected to the first connecting valve 15.

[0057] The aforementioned guide pipe 7 allows the liquid medicine to flow directly into the filter bag 4, reducing the impact of components such as the upper baffle plate 5 on filtration and minimizing liquid medicine loss. This structure allows the liquid medicine to be input into the cylinder 101 of the filter 1 via the inlet pipe 10, inlet branch pipe 8, and guide pipe 7 for filtration, achieving directional input of the liquid medicine. The first connecting valve 15 controls the input of the liquid medicine through the inlet pipe 10 into the cylinder 101 of the filter 1.

[0058] In the above-mentioned extraction tank dual filter, such as Figure 1 As shown, a second connecting valve 16 is provided on the liquid outlet branch pipe 9, and a second clamp 18 is provided on the liquid outlet branch pipe 9 on both sides of the second connecting valve 16 for detachable connection of the liquid outlet branch pipe 9 to the second connecting valve 16.

[0059] The above structure allows the filtered medicinal solution to be input externally through the outlet branch pipe 9 and outlet pipe 11 via the cylinder 101 of the filter 1, enabling directional output of the filtered medicinal solution. The second connecting valve 16 controls the output of the filtered medicinal solution from the cylinder 101 of the filter 1 through the outlet pipe 11.

[0060] The first connecting valve 15 and the second connecting valve 16 mentioned above are both conventionally used manual valves or diaphragm valves. The first clamp 17 and the second clamp 18 mentioned above are both conventionally used clamps for fixing pipelines.

[0061] In the above-mentioned extraction tank dual filter, the inner barrel 3 is made of stainless steel.

[0062] In the above-mentioned extraction tank dual filter, the surface of the barrel 31 is provided with a plurality of first filter holes.

[0063] In one embodiment, the pore size of the first filter pore is 4-6 mm, preferably 5 mm.

[0064] The inner barrel 3, through the barrel body 31 with filter holes, can provide a fixed shape and support for the filter bag 4 when the medicine is filtered through the filter bag 4, and can further filter the medicine.

[0065] In the above-mentioned extraction tank dual filter, such as Figure 2As shown, the ring support plate 2 and the first support ring plate 32 are hollow ring plates. One end of the ring support plate 2 is connected to the inner wall of the cylinder 101 around the circumference of the cylinder 101, and the other end of the ring support plate 2 protrudes inward along the horizontal radial direction of the cylinder 101. The top surface of the ring support plate 2 is provided with a first sealing ring layer 21. One end of the first support ring plate 32 is connected to the top of the barrel 31 around the circumference of the barrel 31, and the other end of the first support ring plate 32 protrudes outward along the horizontal radial direction of the barrel 31. The first support ring plate 32 is stacked on the ring support plate 2.

[0066] In one embodiment, the width of the ring support plate 2 along the horizontal radial direction of the cylinder 101 is not less than the width of the first support ring plate 32 along the horizontal radial direction of the cylinder 31.

[0067] In one embodiment, the thickness of the ring support plate 2 is 8-12 mm, preferably 10 mm; the width of the ring support plate 2 along the horizontal radial direction of the cylinder 101 is 45-55 mm, preferably 50 mm.

[0068] In one implementation, such as Figure 2 As shown, the ring support plate 2 remains flat along the horizontal radial direction of the cylinder 101, thus maintaining high support strength. The ring support plate 2 is welded to the inner wall of the cylinder 101.

[0069] In one embodiment, the thickness of the first support ring plate 32 is 8-12 mm, preferably 10 mm; the width of the first support ring plate 32 along the horizontal radial direction of the barrel body 31 is 45-55 mm, preferably 50 mm.

[0070] In one implementation, such as Figure 2 As shown, the first support ring plate 32 remains flat along the horizontal radial direction of the barrel body 31, thus maintaining high support strength. The first support ring plate 32 is welded to the top of the barrel body 31.

[0071] In one implementation, such as Figure 2 As shown, the top surface of the ring support plate 2 has a downwardly recessed first sealing groove 22, and a first sealing ring layer 21 is embedded in the first sealing groove 22. When the inner barrel 3 is placed into the cylinder 101, the lower end face of its first supporting ring plate 32 contacts the upper end face of the ring support plate 2. Since there is an unavoidable gap between the two metal end faces, the first sealing ring layer 21 provided on the first sealing groove 22 plays a sealing role to prevent the medicine from entering directly through this unfiltered area.

[0072] In one embodiment, the first sealing ring layer 21 is made of silicone. The first sealing ring layer 21 is a silicone sealing strip.

[0073] The above-mentioned first support ring plate 32 and ring support plate 2 cooperate to mean that the first support ring plate 32 is stacked on the ring support plate 2, which can effectively fix the barrel 31 inside the cylinder 101.

[0074] In the above-mentioned extraction tank dual filter, the bag body 41 is made of filter cloth.

[0075] In the above-mentioned extraction tank dual filter, the surface of the bag body 41 is provided with a plurality of second filter holes.

[0076] In one embodiment, the pore size of the second filter pore is smaller than that of the first filter pore.

[0077] The filter bag 4 can be made with different mesh sizes to meet the filtration needs of various products. In the filter bag 4, after the extract is filtered through the bag body 41, solid impurities are trapped inside the filter bag 4. The filtered medicine flows out of the bag body 41 through the second filter hole, then flows out of the tank 31 through the first filter hole, and then flows out of the cylinder 101 through the outlet branch pipe 9, and is stored in the medicine storage tank of the subsequent process, playing a key role in medicine filtration.

[0078] In the above-mentioned extraction tank dual filter, such as Figure 2 As shown, the second support ring 42 is a hollow ring shape. One end of the second support ring 42 is connected to the top of the bag body 41 along the circumference of the bag body 41. The second support ring 42 is stacked on the first support ring plate 32.

[0079] In one implementation, such as Figure 2 As shown, the second support ring 42 is a steel wire loop. The second support ring 42 is sewn to the top of the bag body 41, providing high support strength for the bag body 41.

[0080] In the above-mentioned extraction tank dual filter, the second support ring 42 is made of stainless steel.

[0081] In the above-mentioned extraction tank dual filter, such as Figure 2 As shown, the upper baffle plate 5 is made of stainless steel.

[0082] In the above-mentioned extraction tank dual filter, such as Figure 2 As shown, the upper baffle plate 5 is in the shape of a hollow ring plate, and the bottom surface of the upper baffle plate 4 is provided with a second sealing ring layer 51. The upper baffle plate 5 is detachably stacked on the second support ring 42.

[0083] In one embodiment, the second sealing ring layer 42 is made of silicone. The second sealing ring layer 42 is a silicone sealing strip.

[0084] In one implementation, such as Figure 2As shown, the bottom surface of the upper baffle plate 5 has an upwardly recessed second sealing groove 52, and a second sealing ring layer 51 is embedded in the second sealing groove 52. The upper baffle plate 5 is mounted on the second support ring 42, and the lower end face of the upper baffle plate 5 is in contact with the upper end face of the second support ring 42. Since there is an unavoidable gap between the two metal end faces, the second sealing ring layer 51 provided on the second sealing groove 52 plays a sealing role and can prevent external liquid from entering through the gap between these two end faces.

[0085] In one embodiment, the width of the upper baffle plate 5 along the horizontal radial direction of the cylinder 101 is not less than the width of the first support ring plate 32 along the horizontal radial direction of the cylinder 31.

[0086] In one embodiment, the upper baffle plate 5 remains flat along the horizontal radial direction of the cylinder 101, thus maintaining high fixation performance.

[0087] In the above-mentioned extraction tank dual filter, such as Figure 2 As shown, the upper baffle plate 5, the first support ring plate 32, and the ring support plate 2 are provided with a plurality of corresponding screw holes. The ring support plate 2 is provided with a plurality of fastening bolts 19. Each fastening bolt 19 includes a detachable threaded screw 191 and a wing nut 192. The number of screws 191 is the same as the number of screw holes. The screws 191 pass through the screw holes of the upper baffle plate 5, the first support ring plate 32, and the ring support plate 2 from top to bottom and are connected to the inner wall of the screw holes of the ring support plate 2. The upper baffle plate 5 and the first support ring plate 32 are detachably fixed by the screws 191 and the wing nuts 192 so that the second support ring 42 is fixed between the upper baffle plate 5 and the first support ring plate 32. This demonstrates the cooperative structure of the first support ring plate 32, the second support ring 42, and the upper baffle plate 5, which can effectively fix the bag body 41 inside the barrel body 31.

[0088] The screw 191 and wing nut 192 in the aforementioned fastening bolt 19 are conventionally used fastening bolt components, used to effectively fix the inner barrel 3 and filter bag 4 inside the cylinder 101 for easy filtration. The screw 191 is welded to the inner wall of the screw hole of the ring support plate 2. The upper baffle plate 5 and the first support ring plate 32 are detachably fixed by the screw 191 and the wing nut 192. The first support ring plate 32 and the upper baffle plate 5 are sequentially fitted onto the screw 191 in the screw hole of the ring support plate 2 from bottom to top through the corresponding screw holes, and then tightened by screwing the wing nut 192 downwards, thereby fixing the second support ring 42 between the upper baffle plate 5 and the first support ring plate 32. After unscrewing the wing nut 192 upwards, the upper baffle plate 5, filter bag 4, and inner barrel 3 can be removed sequentially from top to bottom.

[0089] In one implementation, such as Figure 2As shown, the screw hole on the ring support plate 2 is located in the area between the first sealing ring layer 21 and the inner wall of the cylinder 101, and the screw hole on the upper baffle plate 5 is located in the area next to the second sealing ring layer 51 and close to the inner wall of the cylinder 101.

[0090] In one implementation, such as Figure 2 As shown, the diameter of the screw hole or screw 191 is M6.

[0091] In one implementation, such as Figure 2 As shown, the number of screw holes or fastening bolts 19 is 3-5, preferably 4.

[0092] In one implementation, such as Figure 2 As shown, the spacing between adjacent fastening bolts 19 is equal, ensuring that the fastening bolts 19 are evenly distributed.

[0093] The following is combined Figure 1-2 This describes the specific usage process of a dual-stage filter for an extraction tank in this utility model.

[0094] Operator uses such Figure 1-2 When using the dual-stage filter in the extraction tank shown, hold the hand section of the locking handle 13 and rotate it counterclockwise in the circumferential direction. This causes the locking nut 121 to move upward along the threaded outer edge of the locking screw 122, releasing the locking pressure applied to the locking ring 124 by the locking nut 121. This allows the lower end of the locking ring 124 to loosen and contact the outer edge of the cover 102, opening the cover 102. The desired inner barrel 3 is then placed inside the cylinder 101. The barrel 31 with a first filter hole of a specific aperture is fitted inside the ring support plate 2, and the first support ring plate 32 is stacked on top of the ring support plate 2. The two are sealed by the first sealing ring layer 21. Next, the desired filter bag 4 is placed inside the inner barrel 3. The bag 41 with a second filter hole of a specific aperture is fitted inside the barrel 31, and the second support ring 42 is stacked on top of the first support ring plate 32. Next, the upper retaining ring plate 5 is stacked on the second support ring 42, and the two are sealed by the second sealing ring layer 52. When stacking, make sure that the first support ring plate 32 and the upper retaining ring plate 5 are sequentially fitted onto the screw rod 191 in the screw hole of the ring support plate 2 from bottom to top through the corresponding screw holes, and then tightened with the wing nut 192 downward thread to fix it, thereby fixing the second support ring 42 between the upper retaining ring plate 5 and the first support ring plate 32.

[0095] Cover the cap 102, and seal the cylinder 101 with the cap 102 through the third sealing ring 103. Hold the hand section of the locking handle 13 and rotate the locking handle 13 clockwise in the circumferential direction. This will cause the locking nut 121 to move downward along the thread of the locking screw 122, and apply locking pressure to the cap 102 through the locking ring 124. This will cause the lower end of the locking ring 124, which is in contact with the outer edge of the cap 102, to press downward against the contact surface between the cylinder 101 and the cap 102, thereby locking the cylinder 101 and the cap 102.

[0096] Next, the first connecting valve 15 is opened, and the extract containing a small amount of solid impurities is input through the inlet pipe 10, the inlet branch pipe 8, and the guide pipe 7 in sequence. After being filtered by the bag body 41 of the filter bag 4, it is filtered by the barrel body 31. Then, the second connecting valve 16 is opened, and the filtrate is output through the outlet branch pipe 9 and the outlet pipe 11 in sequence.

[0097] After use, hold the hand section of the locking handle 13 and rotate it counterclockwise in the circumferential direction. This will cause the locking nut 121 to move upward along the threaded edge of the locking screw 122, releasing the locking pressure applied to the cover 102 by the locking ring 124. This will cause the lower end of the locking ring 124 to loosen upward and contact the outer edge of the cover 102, opening the cover 102. After unscrewing the wing nut 192 upward, remove the upper retaining ring plate 5 and then remove the filter bag 4 containing solid impurities. Finally, tighten the wing nut 192 downward to secure the first support ring plate 32 and the ring support plate 2.

[0098] Cover the cylinder 101 with the cap 102, and seal the cylinder 101 with the cap 102 through the third sealing ring 103. Hold the hand section of the locking handle 13 and rotate it clockwise in the circumferential direction. This causes the locking nut 121 to move downward along the thread of the locking screw 122, applying locking pressure to the cap 102 through the locking ring 124. This causes the lower end of the locking ring 124, which is in contact with the outer edge of the cap 102, to press downward against the contact surface between the cylinder 101 and the cap 102, thereby locking the cylinder 101 and the cap 102. The cleaning spray ball, which acts as the spray element 6, performs 360° cleaning of the inside of the cylinder 101 without dead angles. Open the second connecting valve 16, and the cleaning fluid is output sequentially through the tank 31, the outlet branch pipe 9, and the outlet pipe 11. Repeat the above steps for reuse.

[0099] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A dual-stage filter for an extraction tank, characterized in that, The system includes two filters (1), each filter (1) comprising a cylindrical body (101) and a cap (102). The cylindrical body (101) is hollow and detachably connected to the cap (102). The cylindrical body (101) contains a ring support plate (2) and an inner barrel (3). The ring support plate (2) is located on the inner wall of the cylindrical body (101). The inner barrel (3) includes a barrel body (31) and a first support ring plate (32). The barrel body (31) is hollow and open at the top. The first support ring plate (32) is connected to the top of the barrel body (31). The barrel body (31) is detachably fitted inside the ring support plate (2), and the first support ring plate (32) cooperates with the ring support plate (2). A filter bag (4) is provided inside the barrel body (31). The filter bag (4) includes a bag body (41) and a second support ring (42). The bag body (41) is hollow and open at the top. The body (41) is detachably fitted inside the barrel (31). A hollow upper baffle plate (5) is detachably provided above the second support ring (42). The first support ring plate (32), the second support ring (42), and the upper baffle plate (5) cooperate to make the second support ring (42) detachably fixed between the first support ring plate (32) and the upper baffle plate (5). The barrel (101) is also provided with a spray component (6) and a guide pipe (7). The spray component (6) is connected to the inner wall of the cover (102). One end of the guide pipe (7) is located inside the filter bag (4). The other end of the guide pipe (7) is connected to the liquid inlet branch pipe (8). The barrel (101) is also connected to the liquid outlet branch pipe (9). The liquid inlet branch pipes (8) of the two filters (1) are connected in parallel to the liquid inlet pipe (10). The liquid outlet branch pipes (9) of the two filters (1) are connected in parallel to the liquid outlet pipe (11).

2. The dual-stage filter for an extraction tank according to claim 1, characterized in that, The cylinder (101) and the cover (102) are provided with a locking unit (12). The locking unit (12) includes a locking screw (122) and a support (123). One end of the support (123) is connected to the outer wall of the cylinder (101). The lower end of the locking screw (122) is fixed inside the support (123). A locking nut (121) and a locking pressure ring (124) are sequentially sleeved on the outside of the locking screw (122) from top to bottom. (124) The locking ring (124) is fixedly sleeved outside the locking screw (122) and the lower end of the locking ring (124) is in contact with the outer edge of the cover (102). The locking nut (121) is sleeved outside the locking screw (122) and is movably threaded. The upper end of the locking nut (121) is provided with a locking handle (13) so that the locking handle (13) can rotate to drive the locking nut (121) to move up and down, thereby pressing down or loosening up the locking ring (124).

3. The dual-stage filter for an extraction tank according to claim 2, characterized in that, The locking handle (13) includes a hand-held section (131) that passes through the locking nut (121) and slides back and forth within the locking nut (121). The two ends of the hand-held section (131) are respectively provided with fixing sections (132). The diameter of the fixing section (132) along the axis perpendicular to the hand-held section (131) is larger than the diameter of the hole in the locking nut (121) through which the hand-held section (131) passes, so as to fix the hand-held section (131) within the locking nut (121).

4. A dual-stage filter for an extraction tank according to claim 1, characterized in that, A third sealing ring (103) is provided on the contact surface between the cover (102) and the cylinder (101); a third sealing groove (104) with an upward recess is opened on the bottom surface of the cover (102), and the third sealing ring (103) is embedded in the third sealing groove (104).

5. A dual-stage filter for an extraction tank according to claim 1, characterized in that, The bottom of the cylinder (101) is provided with a plurality of support legs (14); the number of support legs (14) is not less than 3; And / or, the cover (102) is provided with an observation window; And / or, the spray element (6) is a cleaning spray ball, and the cleaning spray ball is externally connected to a water supply pipe.

6. A dual-stage filter for an extraction tank according to claim 1, characterized in that, The guide pipe (7) is snapped onto the inner wall of the fixed cylinder (101) and connected to the inlet branch pipe (8). The inlet branch pipe (8) is provided with a first connecting valve (15), and the inlet branch pipes (8) on both sides of the first connecting valve (15) are respectively provided with first clamps (17); the outlet branch pipe (9) is provided with a second connecting valve (16), and the outlet branch pipes (9) on both sides of the second connecting valve (16) are respectively provided with second clamps (18).

7. A dual-stage filter for an extraction tank according to claim 1, characterized in that, The ring support plate (2) and the first support ring plate (32) are hollow ring plates. One end of the ring support plate (2) is connected to the inner wall of the cylinder (101) around the circumference of the cylinder (101). The other end of the ring support plate (2) protrudes inward along the horizontal radial direction of the cylinder (101). The top surface of the ring support plate (2) is provided with a first sealing ring layer (21). One end of the first support ring plate (32) is connected to the top of the barrel (31) around the circumference of the barrel (31). The other end of the first support ring plate (32) protrudes outward along the horizontal radial direction of the barrel (31). The first support ring plate (32) is stacked on the ring support plate (2). The top surface of the ring support plate (2) has a downwardly recessed first sealing groove (22). The first sealing groove (22) is embedded with the first sealing ring layer (21).

8. A dual-stage filter for an extraction tank according to claim 1, characterized in that, The second support ring (42) is hollow and one end of the second support ring (42) is connected to the top of the bag body (41) along the circumference of the bag body (41). The second support ring (42) is stacked on the first support ring plate (32).

9. A dual-stage filter for an extraction tank according to claim 1, characterized in that, The upper baffle plate (5) is in the shape of a hollow ring plate. The bottom surface of the upper baffle plate (5) is provided with a second sealing ring layer (51). The upper baffle plate (5) is detachably stacked on the second support ring (42). The bottom surface of the upper baffle plate (5) has an upwardly recessed second sealing groove (52), and the second sealing ring layer (51) is embedded in the second sealing groove (52).

10. A dual-stage filter for an extraction tank according to claim 1, characterized in that, The upper retaining ring plate (5), the first supporting ring plate (32), and the ring support plate (2) are provided with a number of corresponding screw holes. The ring support plate (2) is provided with a number of fastening bolts (19). Each fastening bolt (19) includes a detachable threaded screw (191) and a wing nut (192). The number of screws (191) is the same as the number of screw holes. The screws (191) pass through the screw holes of the upper retaining ring plate (5), the first supporting ring plate (32), and the ring support plate (2) from top to bottom and then connect with the ring support plate. The inner walls of the screw holes of the plate (2) are connected. The upper baffle plate (5) and the first support ring plate (32) are detachably fixed by screws (191) and wing nuts (192) so that the second support ring (42) is fixed between the upper baffle plate (5) and the first support ring plate (32). The screw holes on the ring support plate (2) are located in the area between the first sealing ring layer (21) and the inner wall of the cylinder (101). The screw holes on the upper baffle plate (5) are located in the area next to the second sealing ring layer (51) and close to the inner wall of the cylinder (101).

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