Resin complete equipment filter core sealing structure

Abstract

The utility model discloses resin complete equipment filter core sealing structure belongs to filter equipment technical field, aims at solving the problem of filter core interface sealing unreliable and installation replacement operation complex in prior art. Structure includes shell, end cover and installs filter core in the inside, is provided with the leakage prevention mechanism between filter core and end cover, is equipped with positioning mechanism in filter core bottom. The leakage prevention mechanism includes the connecting pipe and outer ring of fixed in filter core one end and the fixed assembly of fixed in one side of end cover, and fixed assembly is equipped with the ball of can be inserted into the ring groove of outer ring to realize quick -witted connection, and is equipped with the screw ring and outer ring thread cooperation for secondary locking, and the inside of connecting pipe still is equipped with push column, sealing washer and spring no.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and in particular to the sealing structure of filter element in resin complete equipment. Background Technology

[0002] Resin processing equipment plays a crucial role in chemical, water treatment, and materials manufacturing industries. To ensure the purity and performance of resin products, filter cartridges are typically installed in the equipment to efficiently filter out various impurities and particulate matter from raw materials or circulating fluids. As a core consumable, filter cartridges have a limited lifespan and require regular inspection and replacement based on operating conditions. Therefore, the design of the sealing structure connecting the filter cartridge to the main body of the equipment directly affects the maintenance efficiency and operational reliability of the equipment.

[0003] Currently, the connection between conventional filter elements and equipment end caps mostly uses a single threaded connection. This structure relies on tightening the thread to generate a strong axial clamping force, causing the seal to deform and thus achieve a seal. While this method provides good sealing performance and connection strength, its operation is relatively cumbersome, especially on production lines where filter elements need to be replaced frequently. Repeatedly loosening and tightening not only consumes a lot of time but can also damage the threads due to improper operation, affecting overall production and maintenance efficiency.

[0004] To improve ease of operation, some quick-release or snap-fit ​​connection structures have emerged in the market. While these structures offer significant advantages in installation and disassembly speed, the stability of the connection and the long-term reliability of the seal face challenges. During the operation of resin equipment, fluctuations in fluid pressure or mechanical vibrations of the equipment itself can easily cause minor loosening of simple snap-fit ​​connections. This loosening can disrupt the original uniform stress state of the seal, eventually leading to potential leaks that may not only contaminate the product but also threaten production safety.

[0005] In summary, existing filter element sealing structures in resin-based complete sets of equipment often fail to simultaneously meet the dual requirements of high-reliability sealing and quick and convenient operation; pursuing one aspect at the expense of the other. Therefore, designing a filter element connection structure that enables both rapid assembly and disassembly while ensuring long-term stable sealing under high pressure and vibration conditions is a pressing technical problem that needs to be solved in this field.

[0006] Therefore, this utility model proposes a sealing structure for the filter element of a resin complete set of equipment to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems of cumbersome and time-consuming connection operation and difficulty in ensuring sealing reliability and convenience by a single connection method in the existing resin complete equipment filter element sealing structure, this utility model aims to provide a resin complete equipment filter element sealing structure with improved structure that can effectively solve the above problems.

[0008] This utility model provides a sealing structure for a filter element in a resin complete equipment, including: a shell, a filter element, an end cap; and a leak-proof mechanism.

[0009] The leak-proof mechanism is located between the top of the filter element and the bottom of the end cap. The leak-proof mechanism includes a connecting pipe, a spring, a connecting ring, a push post, a sealing ring, a limiting block, an outer ring, a ring groove, a ball, and a fixing component.

[0010] Furthermore, the connecting tube is fixedly connected to one end of the filter element, and the outer ring is sleeved on the outside of the connecting tube. The inner surface of the outer ring has an annular groove. The fixing assembly is fixedly connected to the bottom of the end cap, and includes a connecting post. The outer side of the connecting post has a circular groove for accommodating a ball, and a spiral ring is threaded onto the outside of the connecting post. When the outer ring is axially inserted into the connecting post, the ball is inserted into the annular groove, and the spiral ring is threaded onto the outer ring. One end of the spring is connected to the connecting tube, and the other end is connected to the connecting ring. The connecting ring has a push post that slides inside, and a sealing ring is sleeved on the outside of the push post. The sealing ring can abut against the inside of the limiting block.

[0011] Preferably, the resin complete equipment filter element sealing structure further includes a positioning mechanism, which is fixedly connected to the bottom of the housing and used to position the bottom of the filter element.

[0012] Preferably, the positioning mechanism includes a base plate, a cylinder, a fixed ring, a sliding ring, a second spring, a slider, and a second connecting ring; the base plate is fixedly connected to the bottom of the outer shell, and the cylinder is fixedly connected to the base plate; the second connecting ring is fixedly connected to the bottom of the filter element, and the second spring and the slider are disposed inside the second connecting ring; the slider can engage with the fixed ring under the action of the second spring.

[0013] Preferably, the slip ring is sleeved on the cylinder, and the outer surface of the slip ring is provided with an inclined surface, which is used to guide the slider to disengage from the locking engagement with the fixed ring when the filter element is pressed.

[0014] Preferably, when the filter element is mated with the end cap, the pusher moves under pressure, causing the sealing ring to tightly abut against the inside of the limiting block to form a seal.

[0015] Preferably, the threaded connection between the spiral ring and the outer ring applies an axial locking force to the snap-fit ​​structure between the ball and the ring groove.

[0016] Preferably, there are multiple beads, which are evenly distributed around the circumference of the circular groove.

[0017] Preferably, the limiting block is integrally formed inside the outer ring.

[0018] This utility model has the following beneficial effects: 1. This utility model solves the problem of leakage caused by poor sealing of filter element interface and weak connection in the prior art by setting an anti-leakage mechanism that integrates internal push column sealing, external quick locking ball and spiral ring thread secondary fastening at the connection between filter element and end cover. It achieves the dual effect of reliable sealing performance and stable connection.

[0019] 2. This utility model solves the problem of complex, time-consuming and labor-intensive filter element installation and disassembly in the prior art by combining a quick-connecting ball-type snap-fit ​​mechanism with a press-type self-locking positioning mechanism, thus achieving the technical effect of convenient installation and operation and high replacement efficiency.

[0020] 3. This utility model solves the problem that the filter element is only fixed at the top in the prior art and is prone to vibration or shaking during equipment operation by setting a press-type self-locking positioning mechanism at the bottom of the filter element. It achieves the effect of effectively supporting and stabilizing the filter element and improving the stability of the overall structure. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the filter element sealing structure of the resin complete set of equipment proposed in this utility model; Figure 2 This is a schematic diagram of the filter element structure of the resin complete equipment filter element sealing structure proposed in this utility model; Figure 3 This is a schematic diagram of the anti-leakage mechanism of the filter element sealing structure of the resin complete equipment proposed in this utility model; Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0022] Legend: 1. End cap; 2. Leak-proof mechanism; 21. Connecting pipe; 22. Spring 1; 23. Connecting ring 1; 24. Push post; 25. Sealing ring; 26. Restricting block; 27. Outer ring; 28. Ring groove; 29. ​​Ball; 210. Fixing component; 2101. Connecting post; 2102. Circular groove; 2103. Spiral ring; 3. Positioning mechanism; 31. Base plate; 32. Cylinder; 33. Fixing ring; 34. Slip ring; 35. Spring II; 36. Slider; 37. Connecting ring II; 4. Filter element; 5. Outer shell. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] Example: Please refer to Figures 1 to 4 This utility model provides a filter element sealing structure for a complete resin equipment, which aims to solve the problems of unreliable sealing of the filter element 4 interface, complicated installation and replacement operations, and unstable positioning in the prior art.

[0025] like Figure 1 and Figure 2 As shown, the filter element sealing structure of the resin complete equipment includes a housing 5, an end cap 1 set on the top of the housing 5, and a filter element 4 installed inside the housing 5. The housing 5 is used to form the main container of the equipment. The top of the filter element 4 is connected to the bottom of the end cap 1. A leak-proof mechanism 2 is provided between the top of the filter element 4 and the bottom of the end cap 1. The leak-proof mechanism 2 is used to achieve a sealing and locking connection between the filter element 4 and the end cap 1. Specifically, refer to Figure 3 and Figure 4 The leak-proof mechanism 2 includes a connecting pipe 21, a spring 22, a connecting ring 23, a push post 24, a sealing ring 25, a limiting block 26, an outer ring 27, a ring groove 28, a ball 29, and a fixing component 210. As a connection structure at one end of the filter element 4, the connecting tube 21 is fixedly connected to the top of the filter element 4, and one end of the outer ring (27) is fixedly connected to one end of the connecting tube (21). The inner surface of the outer ring 27 is surrounded by a ring groove 28 for snap-fit. As a connection structure at one end of the end cap 1, the fixing component 210 is fixedly connected to the bottom of the end cap 1. The fixing component 210 includes a connecting post 2101 as the main body. The outer radial opening of the connecting post 2101 is provided with a circular groove 2102 for accommodating the ball 29. The spiral ring 2103 is threadedly engaged with the outer side of the connecting post 2101. When the filter element 4 is installed and connected to the end cap 1, the outer ring 27 is axially inserted into the connecting post 2101, and the ball 29 protrudes outward from the circular groove 2102 and is stuck into the ring groove 28 under the action of the elastic element, so as to achieve initial quick locking. Then, the spiral ring 2103 is rotated, and the spiral ring 2103 is threadedly connected to the outer wall of the outer ring 27 to form a second locking. As an internal sealing structure, one end of spring 22 is fixedly connected to the inside of connecting tube 21, and the other end of spring 22 is connected to connecting ring 23. Push post 24 is slidably fitted inside connecting ring 23. A sealing ring 25 is sleeved on the outer peripheral wall of push post 24. Restriction block 26 is integrally formed inside outer ring 27 and is used to provide a contact surface for sealing ring 25 to form a seal when push post 24 is pressed and moved.

[0026] Reference Figure 1 and Figure 4 The positioning mechanism 3 has a base plate 31 as the mounting base, a cylinder 32 extending vertically upward from the surface of the base plate 31, a fixing ring 33 fixed on the cylinder 32, and a sliding ring 34 sleeved on the cylinder 32 and located below the fixing ring 33. The base plate 31 is fixedly connected to the bottom inner wall of the housing 5 by screws, and its function is to provide a reliable locking platform for the bottom of the filter element 4. A connecting ring 37 is correspondingly provided at the bottom of the filter element 4. The interior of the connecting ring 37 is provided with a cavity for accommodating the moving component. The moving component includes a spring 35 and a slider 36. One end of the spring 35 abuts against the inner wall of the cavity, and the other end is connected to the slider 36. When the filter element 4 is pressed down in the assembled state, the connecting ring 37 at its bottom is fitted onto the outside of the cylinder 32, and the slider 36 is driven to extend radially outward under the elastic force of the spring 35, and slide into the bottom of the fixing ring 33. This pressing-type snap-fit ​​structure ensures that the bottom of the filter element 4 is firmly locked, preventing it from vibrating or displacing during equipment operation.

[0027] In a preferred embodiment, the slip ring 34 has an inclined surface on its outside, which forms a cam structure. When the filter element 4 is pressed again, the slider 36 is guided to retract radially inward, thereby disengaging from the locking engagement with the fixed ring 33, so that the filter element 4 can be easily removed. In a preferred embodiment, there are multiple beads 29, which are evenly distributed around the circumference of the outer circular groove 2102 of the connecting post 2101. This ensures that the outer ring 27 is subjected to uniform force during snap-fit, and the connection is more stable. In a preferred embodiment, when the filter element 4 is fully connected to the end cap 1, the pusher 24 is displaced under axial pressure, so that its outer sealing ring 25 is tightly pressed against the inner wall of the limiting block 26, forming a reliable internal seal. As a preferred embodiment, the threaded connection between the spiral ring 2103 and the outer ring 27 not only provides axial locking, but also applies preload to the snap-fit ​​structure between the ball 29 and the ring groove 28, effectively eliminating connection gaps and resisting vibration and pressure impacts.

[0028] The working principle is as follows: When installing filter element 4, first align the leak-proof mechanism 2 on the top of filter element 4 with the fixing component 210 at the bottom of end cap 1 and push it upward. The connecting post 2101 is inserted into the outer ring 27. During the pushing process, the ball 29 is first pressed into the groove 2102 by the inner wall of the outer ring 27. When it reaches the predetermined position, the ball 29 is just aligned with the ring groove 28 and pops out and is stuck in the ring groove 28 under the action of its own elastic element, completing the quick connection. At this time, the push post 24 passes through the connecting ring 23 through the spring 22 and the connecting tube 21 and also abuts against the corresponding part on the side of end cap 1. Under pressure, the sealing ring 25 abuts against the inner wall of the limiting block 26 to form a pre-seal. Then, rotate the spiral ring 2103 to make it engage with the outer ring 27 thread and tighten it to achieve the second mechanical locking and enhance the sealing effect. After the top of the filter element 4 is fixed, press down on the entire filter element 4. The connecting ring 37 of the bottom positioning mechanism 3 of the filter element 4 moves down and is sleeved on the cylinder 32 on the bottom plate 31. The bottom of the bottom plate 31 is fixed inside the outer shell 5. During the pressing process, the slider 36 inside the connecting ring 37 slides over the outer wall of the cylinder 32 under the push of the spring 35. Finally, when it reaches the locking position, it pops out and gets stuck in the fixing ring 33, thus completing the firm positioning of the bottom of the filter element 4. When disassembling filter element 4, first press filter element 4 down gently again. The slider 36 will continue to move down and contact the slip ring 34. The slider 36 slides along the inclined surface of the slip ring 34 and is forced to compress inward by the inclined surface, thereby disengaging from the locking with the fixed ring 33. At this time, release your hand, and filter element 4 will bounce up under the reset spring force, releasing the bottom lock. Then, rotate the spiral ring 2103 in the opposite direction to loosen it. Finally, pull out filter element 4 with force, so that the ball 29 overcomes the locking force and comes out of the ring groove 28, thus completing the entire disassembly process.

Claims

1. A filter element sealing structure for resin-based complete sets of equipment, comprising: A housing (5), and a filter element (4) installed inside the housing (5); End cap (1), the end cap (1) is disposed on the top of the outer shell (5), and the top of the filter element (4) is connected to the bottom of the end cap (1); The resin complete equipment filter element sealing structure is characterized in that it further includes a leak-proof mechanism (2), which is disposed between the top of the filter element (4) and the bottom of the end cap (1); The leak-proof mechanism (2) includes a connecting pipe (21), a spring (22), a connecting ring (23), a pusher (24), a sealing ring (25), a limiting block (26), an outer ring (27), a ring groove (28), a ball (29), and a fixing component (210). The connecting pipe (21) is fixedly connected to one end of the filter element (4), and one end of the outer ring (27) is fixedly connected to one end of the connecting pipe (21). The inner surface of the outer ring (27) is provided with a ring groove (28). The fixing component (210) is fixedly connected to the bottom of the end cap (1), and includes a connecting post (2101). The connecting post (2101) has a circular groove (2102) on its outside to accommodate the ball (29). The connecting post (2101) has a spiral ring (2103) threaded on its outside. One end of the spring (22) is connected to the connecting tube (21), and the other end is connected to the connecting ring (23). The push post (24) is slidably fitted inside the connecting ring (23). A sealing ring (25) is sleeved on the outside of the push post (24). The sealing ring (25) can abut against the inside of the limiting block (26).

2. The resin complete set of equipment filter element sealing structure according to claim 1, characterized in that, It also includes a positioning mechanism (3), which is fixedly connected to the bottom of the outer shell (5) and is used to position the bottom of the filter element (4).

3. The resin complete set of equipment filter element sealing structure according to claim 2, characterized in that, The positioning mechanism (3) includes a base plate (31), a cylinder (32), a fixing ring (33), a sliding ring (34), a second spring (35), a slider (36), and a second connecting ring (37). The base plate (31) is fixedly connected to the bottom of the outer shell (5), and the cylinder (32) is fixedly connected to the base plate (31). The second connecting ring (37) is fixedly connected to the bottom of the filter element (4), and the second spring (35) and the slider (36) are disposed inside the second connecting ring (37). The slider (36) can engage with the fixing ring (33) under the action of the second spring (35).

4. The resin complete set of equipment filter element sealing structure according to claim 3, characterized in that, The slip ring (34) is sleeved on the cylinder (32). The outer side of the slip ring (34) has an inclined surface, which is used to guide the slider (36) to disengage from the locking engagement with the fixing ring (33) when the filter element (4) is pressed.

5. The resin complete equipment filter element sealing structure according to claim 1, characterized in that, When the filter element (4) is connected to the end cap (1), the pusher (24) is pressed and moved, so that the sealing ring (25) tightly abuts against the inside of the limiting block (26) to form a seal.

6. The resin complete equipment filter element sealing structure according to claim 1, characterized in that, The threaded connection between the spiral ring (2103) and the outer ring (27) applies an axial locking force to the snap-fit ​​structure between the ball (29) and the ring groove (28).

7. The resin complete equipment filter element sealing structure according to claim 1, characterized in that, The number of the beads (29) is multiple and they are evenly distributed around the circumference of the circular groove (2102).

8. The resin complete set of equipment filter element sealing structure according to claim 1, characterized in that, The limiting block (26) is integrally formed inside the outer ring (27).

Images