A food grade quick connect filter
Through an innovative connection mechanism consisting of connecting blocks, insert blocks, and magnetic blocks, combined with a screw and pressure plate structure, the problem of inconvenient replacement of existing food-grade Y-type filter screens has been solved, enabling quick disassembly and installation of the filter screen, improving replacement efficiency and meeting food-grade safety standards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA PUHUI TECH CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-19
AI Technical Summary
Existing food-grade Y-type filters require the removal of multiple nuts and studs when replacing the filter screen, making filter screen replacement inconvenient and affecting efficiency.
The system employs a connecting mechanism consisting of connecting blocks, connecting rings, insert blocks, and magnetic blocks, combined with a screw and pressure plate structure. Through the attraction of the magnetic blocks and connecting rings and the positioning of the limit card, the filter screen can be quickly disassembled and installed. The valve cover can be quickly locked and opened by operating the screw with a wrench.
It enables quick filter replacement and sealing, improves replacement efficiency, meets food-grade safety standards, and avoids the risk of liquid leakage and contamination.
Smart Images

Figure CN224370847U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filters, and more particularly to a food-grade quick-connect filter. Background Technology
[0002] Food-grade quick-connect filters are filtration devices designed specifically for food processing and production. Y-type filters made of food-grade materials can be used as liquid food filtration devices.
[0003] Currently, the Chinese patent with announcement number CN221412463U describes a utility model that adopts a full-bore flow channel structure, which changes the traditional flow channel structure with raised sections inside the valve body of the Y-shaped filter. This facilitates media flow, reduces pressure loss, and effectively protects the filter screen.
[0004] Some existing Y-type filters for filtering liquid food use valve covers secured with multiple nuts and studs. When the internal filter screen needs to be replaced, multiple nuts must be removed to open the valve cover, and then the filter screen must be pulled out separately. This makes it inconvenient to quickly pull out and insert the filter screen, affecting the efficiency of replacing the internal filter screen of the Y-type filter. Utility Model Content
[0005] The main purpose of this utility model is to provide a food-grade quick-connect filter, which aims to solve the problem that some existing Y-type filters for filtering liquid food have valve covers that are fixed by multiple nuts and studs. When it is necessary to replace the internal filter screen, multiple nuts must be removed to open the valve cover, and then the filter screen must be pulled out separately. This is inconvenient for quickly pulling out and inserting the filter screen, which affects the efficiency of replacing the internal filter screen of the Y-type filter.
[0006] To achieve the above objectives, the present invention proposes a food-grade quick-connect filter comprising a Y-shaped filter housing, a valve cover body being provided on the top of the Y-shaped filter housing, a connecting mechanism being provided inside the Y-shaped filter housing, and a pressure plate being provided on the top of the valve cover body.
[0007] The connecting mechanism includes a filter body, a connecting block, a connecting ring, an insert block, and a magnetic block. The bottom of the connecting block is fixedly connected to the top of the filter body. The connecting block is movably inserted into the inside of the connecting ring. The rear side of the insert block passes through the connecting ring and the connecting block in sequence and extends to the outside of the connecting ring. The rear side of the magnetic block is fixedly connected to the front side of the insert block. The surface of the magnetic block is magnetically attracted to the surface of the connecting ring. The top of the connecting ring is fixedly connected to the bottom of the valve cover body. The filter body is inserted into the inside of the Y-type filter housing.
[0008] Preferably, the top of the Y-shaped filter housing is provided with a sealing groove, and there are two sealing grooves. A sealing ring is provided inside the sealing groove, and the top of the sealing ring is in close contact with the bottom of the valve cover body.
[0009] Preferably, limit clips are fixedly connected to the front and rear sides of the top of the Y-shaped filter housing, and limit blocks are fixedly connected to the front and rear sides of the valve cover body, with the surface of the limit block contacting the inner wall of the limit clip.
[0010] Preferably, a pull block is fixedly connected to the front side of the magnetic block, and pull rings are fixedly connected to both the front and rear sides of the top of the valve cover body.
[0011] Preferably, a fixing plate is provided on the top of the valve cover body, and a lead screw is threadedly connected to the inside of the fixing plate. The top of the pressure plate is rotatably connected to the bottom of the lead screw, and the bottom of the pressure plate is in contact with the top of the valve cover body.
[0012] Preferably, a hexagonal screw head is fixedly connected to the top of the lead screw.
[0013] Preferably, a connecting frame is fixedly connected to both the front and rear sides of the bottom of the fixing plate, and a slot is provided on the surface of the Y-shaped filter housing to cooperate with the connecting frame, and the connecting frame is snapped into the inside of the slot.
[0014] Preferably, the Y-type filter housing, valve cover body, connecting block, connecting ring, insert block and pull block are all made of 316 stainless steel, the magnetic block is wrapped with 316 stainless steel, and the sealing ring is made of silicone rubber.
[0015] In this utility model's technical solution, when the filter body needs cleaning or replacement after intercepting impurities inside liquid food, an external wrench is used to turn the hexagonal screw head at the top of the lead screw, causing the lead screw to rise and drive the pressure plate upward. At this time, the connecting bracket at the bottom of the fixing plate separates from the slot on the Y-type filter housing. The fixing plate is then held and removed. Subsequently, the pull ring at the top of the valve cover body is pulled. Since the filter body is connected to the bottom connecting ring of the valve cover body via a connecting block, and through an insert block and a magnetic block, the filter body can be pulled out of the Y-type filter housing along with the valve cover body. Pull the pull block on the front side of the magnetic block to disengage the insert block from the connecting ring, thus separating the connecting block from the connecting ring. Disassemble the filter body. After cleaning or replacing the filter body, insert the connecting block into the connecting ring, allowing the insert block to pass through both and be magnetically secured to the connecting ring. Next, insert the valve cover body along with the filter screen into the Y-type filter housing, ensuring the limiting block on the valve cover body aligns with the limiting clip on the top of the Y-type filter housing. Then, reset the fixing plate, turn the hexagonal screw head to tighten the threaded rod, causing the pressure plate to press down on the valve cover body, and the connecting bracket at the bottom of the fixing plate to engage. The valve cover body features a double-layer sealing groove where a food-grade silicone rubber sealing ring at the bottom is deformed under pressure, tightly fitting the Y-type filter housing and valve cover body to create a seal and prevent food liquid leakage and contamination. The valve cover body can be easily opened and locked by loosening and tightening a single screw. The valve cover body connects to the filter body, facilitating quick insertion and removal of the filter body from the Y-type filter housing, improving filter replacement efficiency. The Y-type filter housing, valve cover body, connecting block, connecting ring, insert block, and pull block are all made of 316 stainless steel, and the magnetic block is also wrapped in 316 stainless steel. The sealing ring is made of silicone rubber, ensuring the entire filter meets food-grade standards. This solves the problem of existing Y-type filters for filtering liquid food where the valve cover is fixed with multiple nuts and studs. When replacing the internal filter, multiple nuts must be removed to open the valve cover, and then the filter must be pulled out separately, making quick insertion and removal inconvenient and affecting the efficiency of filter replacement. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0018] Figure 2This is a three-dimensional connection diagram of the valve cover body and the Y-type filter housing in an embodiment of the present utility model;
[0019] Figure 3 This is a three-dimensional exploded view of the Y-type filter housing and sealing ring in an embodiment of this utility model;
[0020] Figure 4 This is a three-dimensional structural diagram of the bottom of the valve cover body in an embodiment of this utility model;
[0021] Figure 5 This is a three-dimensional connection diagram of the fixing plate and the lead screw in an embodiment of this utility model;
[0022] Figure 6 This is a perspective sectional view of the Y-shaped filter housing in an embodiment of this utility model.
[0023] The reference numerals in the attached diagrams are as follows: 1. Y-type filter housing; 2. Connecting frame; 3. Fixing plate; 4. Valve cover body; 5. Limiting clip; 6. Pull ring; 7. Sealing ring; 8. Connecting mechanism; 801. Filter screen body; 802. Connecting block; 803. Connecting ring; 804. Insert block; 805. Magnetic block; 9. Pulling block; 10. Screw; 11. Pressure plate; 12. Hexagonal screw head; 13. Sealing groove; 14. Slot; 15. Limiting block.
[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0027] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0029] This utility model provides a food-grade quick-connect filter, which aims to solve the problem that some existing Y-type filters used for filtering liquid food have valve covers that are fixed by multiple nuts and studs. When it is necessary to replace the internal filter screen, multiple nuts must be removed to open the valve cover, and then the filter screen must be pulled out separately. This is inconvenient for quickly pulling out and inserting the filter screen, which affects the efficiency of replacing the internal filter screen of the Y-type filter.
[0030] like Figure 1-6 As shown, the present invention provides a food-grade quick-connect filter, including a Y-shaped filter housing 1, a valve cover body 4 on the top of the Y-shaped filter housing 1, a connecting mechanism 8 inside the Y-shaped filter housing 1, and a pressure plate 11 on the top of the valve cover body 4.
[0031] The connecting mechanism 8 includes a filter body 801, a connecting block 802, a connecting ring 803, an insert block 804, and a magnetic block 805. The bottom of the connecting block 802 is fixedly connected to the top of the filter body 801. The connecting block 802 is movably inserted into the inside of the connecting ring 803. The rear side of the insert block 804 passes through the connecting ring 803 and the connecting block 802 in sequence and extends to the outside of the connecting ring 803. The rear side of the magnetic block 805 is fixedly connected to the front side of the insert block 804. The surface of the magnetic block 805 is magnetically attracted to the surface of the connecting ring 803. The top of the connecting ring 803 is fixedly connected to the bottom of the valve cover body 4. The filter body 801 is inserted into the inside of the Y-type filter housing 1.
[0032] In the technical solution of this utility model, when the filter body 801 needs to be cleaned or replaced after intercepting impurities inside liquid food, an external wrench is used to turn the hexagonal screw head 12 at the top of the screw 10, causing the screw 10 to rise and drive the pressure plate 11 to move upward. At this time, the connecting bracket 2 at the bottom of the fixing plate 3 separates from the slot 14 on the Y-type filter housing 1. The fixing plate 3 is held and moved away. Then, the pull ring 6 at the top of the valve cover body 4 is pulled. Since the filter body 801 is connected to the bottom connecting ring 803 of the valve cover body 4 through the connecting block 802, and through the insert block 804 and the magnetic block 805, the filter body 801 can be removed from the Y-type filter housing 1 together with the valve cover body 4. Pull out the internal parts, then pull the pull block 9 on the front side of the magnetic block 805 to disengage the insert block 804 from the connecting ring 803, thus separating the connecting block 802 from the connecting ring 803. Disassemble the filter screen body 801. After cleaning or replacing the filter screen body 801, insert the connecting block 802 into the connecting ring 803, allowing the insert block 804 to pass through both and be magnetically secured to the connecting ring 803 using the magnetic block 805. Next, insert the valve cover body 4 along with the filter screen into the Y-type filter housing 1, ensuring that the limiting block 15 on the valve cover body 4 is engaged and positioned with the limiting clip 5 at the top of the Y-type filter housing 1. Then, reset the fixing plate 3 and rotate the hexagonal screw head 12 to tighten the screw 10. The pressure plate 11 presses down on the valve cover body 4, and the bottom connecting bracket 2 of the fixing plate 3 snaps into the slot 14. At this time, the sealing ring 7 made of food-grade silicone rubber at the bottom of the valve cover body 4 is deformed under pressure in the double-layer sealing groove 13, tightly fitting the Y-type filter housing 1 and the valve cover body 4 to form a sealing effect, eliminating the risk of food liquid leakage and contamination. Only the loosening and tightening of one screw 10 is needed to easily open and lock the valve cover body 4. The valve cover body 4 is connected to the filter screen body 801, which facilitates the quick insertion and removal of the filter screen body 801 into the Y-type filter housing 1, improving the replacement efficiency of the filter screen body 801. The filter housing 1, valve cover body 4, connecting block 802, connecting ring 803, insert block 804, and pull block 9 are all made of 316 stainless steel, and the magnetic block 805 is also wrapped in 316 stainless steel. The sealing ring 7 is made of silicone rubber, making the entire filter meet food-grade standards. This solves the problem of existing Y-type filters for filtering liquid food where the valve cover is fixed by multiple nuts and studs. When it is necessary to replace the internal filter screen, multiple nuts must be removed to open the valve cover, and then the filter screen must be pulled out separately. This is inconvenient for quickly pulling out and inserting the filter screen, which affects the efficiency of replacing the internal filter screen of the Y-type filter.
[0033] Please refer to the following: Figure 2 , Figure 3 and Figure 6The top of the Y-type filter housing 1 has two sealing grooves 13, and a sealing ring 7 is installed inside each sealing groove 13. The top of the sealing ring 7 is in close contact with the bottom of the valve cover body 4. In this embodiment, by opening two sealing grooves 13 on the top of the Y-type filter housing 1 and installing silicone rubber sealing rings 7, the sealing rings 7 fit tightly when the valve cover body 4 is pressed down, forming a double sealing structure, which effectively prevents liquid food leakage. At the same time, the silicone rubber material meets food-grade safety standards, avoiding the risk of contamination and ensuring the hygiene requirements of food production.
[0034] For further information, please continue to refer to [link / reference]. Figure 2 , Figure 3 and Figure 4 Limiting clips 5 are fixedly connected to the front and rear sides of the top of the Y-type filter housing 1, and limiting blocks 15 are fixedly connected to the front and rear sides of the valve cover body 4. The surface of the limiting block 15 contacts the inner wall of the limiting clip 5. In this embodiment, the limiting clips 5 and limiting blocks 15 are correspondingly set on the Y-type filter housing 1 and the valve cover body 4. During installation, the limiting block 15 is embedded in the inner wall of the limiting clip 5 to accurately position the valve cover body 4 and the Y-type filter housing 1, preventing installation misalignment that could lead to sealing failure.
[0035] Please continue to refer to this. Figure 4 A pull block 9 is fixedly connected to the front side of the magnetic block 805, and pull rings 6 are fixedly connected to the front and rear sides of the top of the valve cover body 4. In this embodiment, the pull block 9 on the front side of the magnetic block 805 facilitates the manual separation of the connecting block 802 and the connecting ring 803 by the operator, improving the ease of disassembly of the filter body 801. The pull ring 6 added to the top of the valve cover body 4 facilitates the overall lifting of the valve cover body 4 and the filter body 801.
[0036] Please refer to Figure 1 and Figure 5 A fixing plate 3 is provided on the top of the valve cover body 4. A screw rod 10 is threadedly connected to the inside of the fixing plate 3. The top of the pressure plate 11 is rotatably connected to the bottom of the screw rod 10, and the bottom of the pressure plate 11 contacts the top of the valve cover body 4. In this embodiment, by providing a combination structure of fixing plate 3, screw rod 10 and pressure plate 11 on the top of the valve cover body 4, the pressure of the pressure plate 11 on the valve cover body 4 can be adjusted by rotating the screw rod 10, so as to realize the quick locking and unlocking of the valve cover body 4 and the Y-type filter housing 1. Compared with the traditional method of fixing with multiple studs and nuts, the operation is simpler and the time for disassembling and installing the cover is greatly shortened.
[0037] Additionally, please refer to Figure 5 A hexagonal screw head 12 is fixedly connected to the top of the lead screw 10. In this embodiment, the lead screw 10 is equipped with a hexagonal screw head 12, and the lead screw 10 can be easily rotated by using an external wrench to rotate the hexagonal screw head 12.
[0038] Please refer to Figure 1 , Figure 5 and Figure 6 Connecting brackets 2 are fixedly connected to the front and rear sides of the bottom of the fixing plate 3. The surface of the Y-shaped filter housing 1 is provided with a slot 14 for cooperating with the connecting bracket 2, and the connecting bracket 2 is snapped into the inside of the slot 14. In this embodiment, by cooperating with the slot 14 of the Y-shaped filter housing 1 through the bottom connecting bracket 2 of the fixing plate 3, the connecting bracket 2 is snapped into the slot 14 when the screw 10 is tightened, ensuring that the pressure plate 11 applies stable pressure to the valve cover body 4.
[0039] Additionally, please refer to Figure 1 Figure 2 and Figure 4 The Y-type filter housing 1, valve cover body 4, connecting block 802, connecting ring 803, insert block 804, and pull block 9 are all made of 316 stainless steel. The magnetic block 805 is wrapped in 316 stainless steel, and the sealing ring 7 is made of silicone rubber. In this embodiment, the Y-type filter housing 1, valve cover body 4, connecting block 802, connecting ring 803, insert block 804, and pull block 9 are all made of 316 stainless steel, and the magnetic block 805 is wrapped in 316 stainless steel, meeting the requirements of food production environments. The silicone rubber sealing ring 7 is non-toxic and odorless, meeting food contact safety standards, and comprehensively ensuring the food-grade safety characteristics of the filter.
[0040] It should be noted that the Y-type filter housing 1 is a mature technology that has been published, and its basic filtration mechanism will not be elaborated here.
[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.
Claims
1. A food grade quick connect filter characterized in that, The food-grade quick-connect filter includes a Y-type filter housing (1), a valve cover body (4) is provided on the top of the Y-type filter housing (1), a connecting mechanism (8) is provided inside the Y-type filter housing (1), and a pressure plate (11) is provided on the top of the valve cover body (4). The connecting mechanism (8) includes a filter body (801), a connecting block (802), a connecting ring (803), an insert block (804), and a magnetic block (805). The bottom of the connecting block (802) is fixedly connected to the top of the filter body (801). The connecting block (802) is movably inserted into the inside of the connecting ring (803). The rear side of the insert block (804) passes through the connecting ring (803) and the connecting block (802) in sequence and extends to the outside of the connecting ring (803). The rear side of the magnetic block (805) is fixedly connected to the front side of the insert block (804). The surface of the magnetic block (805) is magnetically attracted to the surface of the connecting ring (803). The top of the connecting ring (803) is fixedly connected to the bottom of the valve cover body (4). The filter body (801) is inserted into the inside of the Y-type filter housing (1).
2. The food grade quick disconnect filter of claim 1, wherein, The top of the Y-type filter housing (1) is provided with a sealing groove (13), and there are two sealing grooves (13). A sealing ring (7) is provided inside the sealing groove (13), and the top of the sealing ring (7) is in close contact with the bottom of the valve cover body (4).
3. The food grade quick disconnect filter of claim 1, wherein, Limiting clips (5) are fixedly connected to the front and rear sides of the top of the Y-type filter housing (1), and limiting blocks (15) are fixedly connected to the front and rear sides of the valve cover body (4). The surface of the limiting block (15) is in contact with the inner wall of the limiting clip (5).
4. The food grade quick disconnect filter of claim 2, wherein, A pull block (9) is fixedly connected to the front side of the magnetic block (805), and a pull ring (6) is fixedly connected to the front and rear sides of the top of the valve cover body (4).
5. The food grade quick disconnect filter of claim 1, wherein, The valve cover body (4) is provided with a fixing plate (3) on the top. The fixing plate (3) is internally threaded with a screw rod (10). The top of the pressure plate (11) is rotatably connected to the bottom of the screw rod (10). The bottom of the pressure plate (11) is in contact with the top of the valve cover body (4).
6. The food grade quick disconnect filter of claim 5, wherein, The top of the lead screw (10) is fixedly connected to a hexagonal screw head (12).
7. The food-grade quick-connect filter according to claim 5, characterized in that, The front and rear sides of the bottom of the fixed plate (3) are fixedly connected to the connecting bracket (2). The surface of the Y-type filter housing (1) is provided with a slot (14) that cooperates with the connecting bracket (2). The connecting bracket (2) is snapped into the inside of the slot (14).
8. The food-grade quick-connect filter according to claim 4, characterized in that, The Y-type filter housing (1), valve cover body (4), connecting block (802), connecting ring (803), insert block (804) and pull block (9) are all made of 316 stainless steel. The magnetic block (805) is wrapped with 316 stainless steel. The sealing ring (7) is made of silicone rubber.