A blocking device for water storage test of activated carbon filter tank

Abstract

The utility model discloses a kind of plugging devices for activated carbon filter tank water storage test, comprising: conical cylinder, the small-caliber end of conical cylinder is provided with conical water inlet cavity along its axis;Plugging assembly, plugging assembly includes water filling air bag coaxially sleeved and fixedly connected in the outer circumferential middle part of conical cylinder, and multiple water inlets are arranged in the cavity wall of water inlet cavity along the radial direction of conical cylinder, and multiple water inlets are distributed in circumferential interval.This application puts conical cylinder into filter hole, when fluid is injected into conical water inlet cavity, fluid makes air bag expand and stick hole wall through water inlet, and air bag elasticity can be self-adapting hole wall deviation, fill gap, completely solve the sealing failure problem of traditional mechanical extrusion type plugging, and filter tank water storage water pressure further extrudes hole wall to push air bag, form the effect that the greater water pressure, the more stable plugging, resist displacement and ensure long-term plugging stability, provide structural guarantee for activated carbon filter tank water storage test efficient development and reliable result.

Description

Technical Field

[0001] This utility model relates to the field of water storage test sealing technology, and in particular to a sealing device for activated carbon filter water storage test. Background Technology

[0002] During the construction and maintenance of activated carbon filters, the water storage test is a key step to verify the airtightness of the filter structure and ensure the subsequent water treatment effect. As the core component of the test, the sealing device must reliably seal various pores of the filter (such as water distribution holes and drainage holes) to prevent water leakage during the test from affecting the accuracy of the test.

[0003] Currently, there are still many areas for improvement in the existing plugging devices used for activated carbon filter water storage tests: some devices adopt a mechanical extrusion plugging structure, which relies on the tight fit between rigid components and the pore wall to achieve a seal. However, due to the processing precision of the filter pore wall or wear after use, gaps may appear, leading to seal failure. Some devices with elastic plugging function are prone to axial displacement along the pore channel under water pressure, making it difficult to maintain a plugging state for a long time, which affects the efficiency and reliability of activated carbon filter water storage tests. Utility Model Content

[0004] The purpose of this invention is to provide a sealing device for water storage tests in activated carbon filter ponds, so as to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A plugging device for water storage test of activated carbon filter, comprising: A conical tube, wherein a conical water inlet cavity is formed along its axis at the small-diameter end of the conical tube; The sealing assembly includes a water-filled airbag coaxially sleeved and fixedly connected to the middle of the outer periphery of a conical cylinder, and a plurality of water inlet holes radially opened on the wall of the water inlet cavity. The plurality of water inlet holes are circumferentially spaced, and one end of each water inlet hole communicates with the inside of the water inlet cavity, while the other end extends through the wall of the conical cylinder to the inner cavity of the water-filled airbag and is sealed and communicated with the inner cavity of the water-filled airbag, for injecting fluid into the water-filled airbag from the water inlet cavity to cause it to expand. The limiting component includes a plurality of anti-slip rings that are spaced apart and fixedly connected along the outer periphery of the large-diameter end of the conical cylinder, and each anti-slip ring has a serrated cross-section.

[0006] Furthermore, the outer peripheral surface of the water-filled airbag is provided with anti-slip texture, which is used to enhance the friction between the outer peripheral surface of the water-filled airbag and the filter pore wall.

[0007] Furthermore, a first threaded hole is provided in the middle of the large-diameter end of the conical cylinder, one end of the first threaded hole is connected to the inner cavity of the water inlet cavity, and a first sealing post is screwed into the inner thread of the first threaded hole.

[0008] Furthermore, two L-shaped drainage channels are symmetrically opened on the outer periphery of the conical shaft between the anti-slip ring and the water-filled airbag. The two ends of the drainage channels pass through the inclined surface of the conical cylinder and the large-diameter end face of the conical cylinder, respectively. A second threaded hole is opened on the inner wall of the drainage channel on the large-diameter end face of the conical cylinder. A second sealing post is screwed into the inner thread of the second threaded hole to drain the residual water between the anti-slip ring, the water-filled airbag, the outer periphery of the conical cylinder and the filter bed hole wall.

[0009] Furthermore, a filter disc is installed at one end of the opening of the water inlet chamber via a disassembly assembly. The surface of the filter disc has several filter holes, and the filter disc is used to filter the liquid entering the water inlet chamber.

[0010] Furthermore, the assembly / disassembly assembly includes a fixing ring fixedly connected to the outer periphery of the filter disc, a fixing bolt passing through the fixing ring, and the fixing bolt being threadedly screwed onto the small-diameter end face of the conical cylinder.

[0011] Furthermore, both the first and second sealing posts are fitted with sealing rings on their outer peripheries, and the sealing rings are elastic.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This application places a conical cylinder into the filter bed pores. When fluid is injected into the conical inlet chamber, the fluid causes the airbag to expand and adhere to the pore wall through the inlet hole. The elasticity of the airbag can adapt to the deviation of the pore wall and fill the gap, completely solving the sealing failure problem of traditional mechanical extrusion sealing. Moreover, the water pressure in the filter bed pushes the airbag to further squeeze the pore wall, forming a more stable sealing effect as the water pressure increases. This resists the pushing force, prevents the device from shifting, and ensures long-term sealing stability, providing structural protection for the efficient conduct and reliable results of activated carbon filter bed water storage tests. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a sealing device for water storage test in an activated carbon filter, as proposed in this utility model. Figure 2 This is an overall internal front view of a sealing device for water storage test in an activated carbon filter proposed in this utility model; Figure 3 This utility model provides a front view of a sealing device for water storage testing in an activated carbon filter, which is inserted entirely into the filter channel. Figure 4 This is an enlarged view of point A of a sealing device for water storage test in an activated carbon filter pond according to the present invention.

[0014] In the diagram: 1. Conical cylinder; 2. Water-filled airbag; 3. Anti-slip texture; 4. Drainage channel; 5. Anti-slip ring; 6. Filter plate; 7. Fixing ring; 8. Fixing bolt; 9. Second sealing post; 10. First threaded hole; 11. First sealing post; 12. Water inlet hole; 13. Second threaded hole; 14. Water inlet cavity; 15. Sealing ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-4 A plugging device for water storage test in an activated carbon filter, comprising: The conical tube 1 has a conical water inlet cavity 14 opened along its axis at the small diameter end of the conical tube 1; The sealing assembly includes a water-filled airbag 2 coaxially sleeved and fixedly connected to the middle of the outer periphery of the conical cylinder 1, and a plurality of water inlet holes 12 radially opened in the wall of the water inlet cavity 14. The plurality of water inlet holes 12 are circumferentially spaced, and one end of each water inlet hole 12 is connected to the inside of the water inlet cavity 14, and the other end extends through the wall of the conical cylinder 1 to the inner cavity of the water-filled airbag 2 and is sealed and connected to the inner cavity of the water-filled airbag 2, for the water inlet cavity 14 to inject fluid into the water-filled airbag 2 to make it expand. The limiting component includes a plurality of anti-slip rings 5 ​​that are spaced apart and fixedly connected along the outer circumference of the large-diameter end of the conical cylinder 1, and each anti-slip ring 5 has a serrated cross-section. Preferably, the water-filled airbag 2 is made of nitrile rubber, and the conical cylinder is made of PP (polypropylene).

[0017] This application first places the conical cylinder 1 into the filter channel F. The serrated anti-slip ring 5 on the outer periphery of its large-diameter end forms a preliminary engagement and limiting with the inner wall of the channel. The serrated structure enhances the engagement with the channel wall, preventing the water-filled airbag 2 from shaking, shifting, or leaking before it is filled with water due to gaps between the device and the channel wall. This provides a positioning basis for subsequent sealing. Then, fluid is injected into the conical water inlet cavity 14 at the small-diameter end of the conical cylinder 1. The fluid passes through the circumferentially spaced water inlet holes 12 on the wall of the water inlet cavity 14, penetrates the wall of the conical cylinder 1, and enters the inner cavity of the water-filled airbag 2. This causes the water-filled airbag 2 to expand along the outer periphery of the conical cylinder 1 and initially adhere to the filter channel wall. The water pressure generated by the subsequent water storage in the filter will act on the side of the water-filled airbag 2 facing the water body. On the other hand, because the water-filled airbag 2 is already filled with fluid and has elasticity, the water pressure will push the airbag in the opposite direction to further squeeze the pore wall, so that the tightness of the fit between the airbag and the pore wall increases with the increase of water pressure. This creates an adaptive effect where the greater the water pressure, the more stable the blockage. It resists the pushing force generated by the water pressure on the device, prevents the device from shifting along the axial direction of the channel, and ensures the stability of the long-term blockage state. This provides structural protection for the efficient implementation and reliability of the activated carbon filter water storage test. It also adapts to the processing accuracy deviation or wear marks of the filter pore wall by utilizing the elastic expansion characteristics of the water-filled airbag 2, and fills the gap of the pore wall through flexible fit, perfecting the blockage of the channel. This completely solves the sealing failure problem caused by the rigid fit of traditional mechanical compression blockage.

[0018] In the example of this application, the outer peripheral surface of the water-filled airbag 2 is provided with anti-slip texture 3, which is used to enhance the friction between the outer periphery of the water-filled airbag 2 and the filter pore wall.

[0019] As a preferred example of this utility model, after the water-filled airbag 2 expands under the action of fluid, the anti-slip texture 3 on its outer periphery will come into close contact with the filter pore wall. The anti-slip texture 3 can increase the friction between the airbag and the pore wall. Compared with the airbag with a smooth surface, it can effectively resist the axial thrust generated by the water pressure on the device during the water storage test, and prevent relative sliding between the airbag and the pore wall. Even if there is slight wear or unevenness in the pore wall, the anti-slip texture 3 can enhance the fit stability through local interlocking, avoid the displacement of the sealing position due to slippage of the contact surface, further consolidate the sealing effect, ensure that the water-filled airbag 2 always maintains a tight fit with the pore wall, avoid the sealing gap caused by displacement, ensure no water leakage during the water storage test, and improve the test efficiency and reliability.

[0020] In the example of this application, a first threaded hole 10 is provided in the middle of the large diameter end of the conical cylinder 1. One end of the first threaded hole 10 is connected to the inner cavity of the water inlet chamber 14, and a first sealing post 11 is screwed into the inner thread of the first threaded hole 10.

[0021] As a preferred example of this utility model, after the water-filled airbag 2 expands through the water inlet 12 and reaches the preset sealing pressure, the first sealing column 11 is screwed into the first threaded hole 10 in the middle of the large diameter end of the conical cylinder 1 to maintain the pressure stability between the water inlet chamber 14 and the inner cavity of the airbag to ensure the sealing effect. After the activated carbon filter tank water storage test is completed, the first sealing column 11 is screwed out from the first threaded hole 10. At this time, the water in the filter tank can be drained smoothly to the outside of the device through the first threaded hole 10 connected to the water inlet chamber 14 to form a drainage channel 4. When the water in the filter tank is completely drained, the water-filled airbag 2 loses the reverse squeezing effect of the water pressure, and its tightness with the hole wall naturally weakens. Then the conical cylinder 1, together with the water-filled airbag 2, anti-slip ring 5 and other components, can be taken out from the filter tank channel. The whole operation does not require disassembling the core structure of the device, and the process is simple and efficient.

[0022] In the example of this application, two L-shaped drainage channels 4 are symmetrically opened on the outer periphery of the conical shaft between the anti-slip ring 5 and the water-filled airbag 2. The two ends of the drainage channel 4 pass through the inclined surface of the conical cylinder 1 and the large-diameter end face of the conical cylinder 1, respectively. A second threaded hole 13 is opened on the inner wall of the drainage channel 4 on the large-diameter end face of the conical cylinder 1. A second sealing post 9 is screwed into the inner thread of the second threaded hole 13 to drain the residual water between the anti-slip ring 5, the water-filled airbag 2, the outer periphery of the conical cylinder 1 and the filter hole wall.

[0023] As a preferred example of this utility model, after the conical cylinder 1 is placed into the filter bed channel and initially positioned by the serrated anti-slip ring 5, and after the water-filled airbag 2 is inflated, water tends to remain in the space formed by the anti-slip ring 5, the water-filled airbag 2, the outer periphery of the conical cylinder 1, and the filter bed wall. At this point, the second sealing post 9 on the inner wall of the drainage channel 4 at the large diameter end of the conical cylinder 1 is unscrewed, and the residual water in this enclosed area will naturally drain out along the preset L-shaped drainage channel 4 (one end penetrates the inclined surface of the conical cylinder 1, and the other end penetrates the large diameter end face). In addition, this effectively prevents residual water from being squeezed between the airbag and the pore wall during the subsequent water inflation and expansion of the water-filled airbag 2, thus preventing water accumulation from hindering the normal local expansion of the airbag. This also prevents the airbag from failing to fully fit the pore wall due to uneven expansion, resulting in sealing gaps. Ultimately, this ensures that the water-filled airbag 2 can fully and evenly fit tightly against the filter pore wall, further improving the sealing reliability of the device, effectively avoiding the interference of water accumulation on the sealing effect, and providing a stable guarantee for the smooth conduct of the activated carbon filter water storage test.

[0024] In the example of this application, a filter disc 6 is installed at one end of the opening of the water inlet chamber 14 via a disassembly assembly. The surface of the filter disc 6 is provided with several filter holes. The filter disc 6 is used to filter the liquid entering the water inlet chamber 14.

[0025] As a preferred example of this utility model, when fluid flows into the inlet chamber 14 to fill the water-filling airbag 2, the fluid must first pass through the surface of the filter plate 6. Several filter holes on the filter plate 6 will intercept impurities mixed in the fluid (such as rust in the pipe, suspended particles in the water, etc.), preventing impurities from entering the inner cavity of the water-filling airbag 2 through the inlet hole 12 with the fluid. This can avoid impurities clogging the inlet hole 12, causing poor water filling or uneven water filling of the airbag, or impurities getting stuck inside the airbag and affecting its elastic expansion performance. This ensures that the sealing component is always in normal working condition, reduces device failures caused by impurities clogging, and reduces maintenance frequency.

[0026] In the example of this application, the assembly includes a retaining ring 7 fixedly connected to the outer periphery of the filter disc 6, a retaining bolt 8 passing through the retaining ring 7, and the retaining bolt 8 being threadedly connected to the small-diameter end face of the conical cylinder 1.

[0027] As a preferred example of this utility model, when installing the filter disc 6, the retaining ring 7 on the outer periphery of the filter disc 6 is fitted against the small-diameter end face of the conical cylinder 1, and the retaining bolt 8 passes through the retaining ring 7 and is screwed into the threaded hole on the small-diameter end face of the conical cylinder 1, thus achieving a firm fixation of the filter disc 6. When the filter disc 6 becomes clogged due to long-term use or needs to be replaced and cleaned, simply unscrew the retaining bolt 8, and the retaining ring 7 and the filter disc 6 can be removed from the conical cylinder 1 together without disassembling the entire sealing device, reducing downtime during maintenance, avoiding delays in the test schedule due to the troublesome replacement of the filter disc 6, and improving the convenience of operation and maintenance and the efficiency of the test.

[0028] In the example of this application, a sealing ring 15 is fitted around the outer periphery of both the first sealing post 11 and the second sealing post 9, and the sealing ring 15 is elastic and made of rubber.

[0029] As a preferred example of this utility model, when the first sealing post 11 is screwed into the first threaded hole 10 and the second sealing post 9 is screwed into the second threaded hole 13, the elastic sealing ring 15 fitted around its outer periphery will deform under the squeezing action of the threaded connection. The deformed sealing ring 15 can fully fill the tiny gap between the sealing post and the inner wall of the threaded hole, forming a secondary seal. For the first sealing post 11, it can prevent the fluid in the water inlet cavity 14 from leaking from the threaded gap, ensure the stability of the airbag pressure, further improve the sealing reliability, avoid the sealing failure caused by the poor connection of the sealing post, and provide double sealing protection for the stable conduct of the water storage test.

[0030] Working principle: First, the conical cylinder 1 is placed into the filter tank to be sealed through the channel. The serrated anti-slip ring 5 on the outer circumference of the large-diameter end of the conical cylinder 1 will initially engage and limit the movement of the device with the inner wall of the channel, preventing the device from shaking, shifting, or leaking before the water-filled airbag 2 inflates. After the water-filled airbag 2 is filled with water and expands, the second sealing post 9 on the inner wall of the drainage channel 4 at the large-diameter end of the conical cylinder 1 is then unscrewed, allowing the residual water in the space enclosed by the anti-slip ring 5, the water-filled airbag 2, and the outer circumference of the conical cylinder 1 to drain along the L-shaped drainage channel 4. Natural drainage prevents water accumulation from hindering subsequent airbag expansion. At this point, the fluid first passes through the filter holes of the filter plate 6 to intercept impurities before entering the inlet chamber 14. Then, it passes through the circumferentially distributed inlet holes 12 on the wall of the inlet chamber 14, penetrating the wall of the conical cylinder 1 and sealingly flowing into the inner cavity of the water-filled airbag 2. This causes the airbag to expand along the outer circumference of the conical cylinder 1. During expansion, the anti-slip texture 3 on the outer circumference of the airbag will make close contact with the hole wall to enhance friction. Furthermore, the water pressure generated by subsequent water storage in the filter tank will act on the side of the water-filled airbag 2 facing the water body. The water pressure pushes the airbag to further compress the hole wall, forming an adaptive effect where the greater the water pressure, the more stable the seal becomes. This resists the axial thrust generated by the water pressure and prevents the device from shifting. After the water-filled airbag 2 expands through the water inlet 12 and reaches the preset sealing pressure, the first sealing column 11 is screwed into the first threaded hole 10 at the middle of the large-diameter end of the conical cylinder 1. This maintains the pressure stability between the water inlet chamber 14 and the inner cavity of the airbag to ensure the sealing effect. After the activated carbon filter tank water storage test is completed, the first sealing column 11 is screwed out from the first threaded hole 10. At this time, the water in the filter tank can be drained smoothly to the outside of the device through the first threaded hole 10 connected to the water inlet chamber 14 to form a drainage channel 4. When the water in the filter tank is completely drained, the water-filled airbag 2 loses the reverse squeezing effect of the water pressure, and its tightness with the hole wall naturally weakens. Then, the conical cylinder 1, along with the water-filled airbag 2, anti-slip ring 5 and other components, can be removed from the filter tank channel. The entire operation does not require disassembling the core structure of the device, and the process is simple and efficient.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing device for water storage tests in activated carbon filter ponds, characterized in that, include: A conical tube (1) has a conical water inlet cavity (14) at its small diameter end along its axis. The sealing assembly includes a water-filled airbag (2) coaxially sleeved and fixedly connected to the middle of the outer periphery of the conical cylinder (1), and a plurality of water inlet holes (12) radially opened on the wall of the water inlet cavity (14) of the conical cylinder (1). The plurality of water inlet holes (12) are circumferentially spaced, and one end of each water inlet hole (12) is connected to the inside of the water inlet cavity (14), and the other end extends through the wall of the conical cylinder (1) to the inner cavity of the water-filled airbag (2) and is sealed and connected to the inner cavity of the water-filled airbag (2) for the water inlet cavity (14) to inject fluid into the water-filled airbag (2) to make it expand. The limiting component includes a plurality of anti-slip rings (5) that are spaced apart and fixedly connected along the outer periphery of the large diameter end of the conical cylinder (1), and the cross section of each anti-slip ring (5) is serrated.

2. The sealing device for activated carbon filter water storage test according to claim 1, characterized in that, The outer peripheral surface of the water-filled airbag (2) is provided with anti-slip texture (3), which is used to enhance the friction between the outer peripheral surface of the water-filled airbag (2) and the filter pore wall.

3. The sealing device for activated carbon filter water storage test according to claim 1, characterized in that, The tapered cylinder (1) has a first threaded hole (10) in the middle of the large diameter end. One end of the first threaded hole (10) is connected to the inner cavity of the water inlet cavity (14), and a first sealing post (11) is screwed into the inner thread of the first threaded hole (10).

4. The sealing device for activated carbon filter water storage test according to claim 3, characterized in that, Two L-shaped drainage channels (4) are symmetrically opened on the outer periphery of the conical shaft between the anti-slip ring (5) and the water-filled airbag (2). The two ends of the drainage channel (4) pass through the inclined surface of the conical cylinder (1) and the large-diameter end face of the conical cylinder (1) respectively. A second threaded hole (13) is opened on the inner wall of the drainage channel (4) on the large-diameter end face of the conical cylinder (1). A second sealing column (9) is screwed into the inner thread of the second threaded hole (13) for draining the residual water between the outer periphery of the anti-slip ring (5), the water-filled airbag (2), the conical cylinder (1) and the filter hole wall.

5. The sealing device for activated carbon filter water storage test according to claim 1, characterized in that, The inlet chamber (14) has a filter disc (6) installed at one end of the opening via a disassembly assembly. The filter disc (6) has several filter holes on its surface and is used to filter the liquid entering the inlet chamber (14).

6. A sealing device for an activated carbon filter tank water storage test according to claim 5, characterized in that, The assembly and disassembly assembly includes a fixing ring (7) fixedly connected to the outer periphery of the filter disc (6), a fixing bolt (8) passing through the fixing ring (7), and the fixing bolt (8) being threadedly connected to the small diameter end face of the conical cylinder (1).

7. A plugging device for an activated carbon filter tank water storage test according to claim 4, characterized in that, The outer periphery of the first sealing post (11) and the second sealing post (9) is fitted with a sealing ring (15), and the sealing ring (15) is elastic.

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