A double-layer sewage tank with replaceable lining

Abstract

This utility model relates to the field of sewage tank technology, and in particular to a double-layer sewage tank with replaceable lining plates. It includes a tank body with protective strips welded to the outer edge of the tank body. The tank body has multiple inner lining plates inside, with sealant strips inserted between adjacent inner lining plates. A sealing strip is provided between the inner lining plates and the inner wall of the tank body. The number of inner lining plates matches the number of rectangular panels and is set according to different sizes. The edges of the inner lining plates are bent at 45°, and multiple pressure-bearing protrusions are horizontally and equidistantly arranged on the outer side of each inner lining plate. This device achieves graded sealing through a double sealing structure of "sealant strip + sealing strip." The inner lining plates are not fixedly connected to the tank body, making replacement simple and preventing damage to the main body of the tank. Furthermore, the inner lining plates are set according to the size of the rectangular panels of the tank body, allowing for individual replacement of damaged inner lining plates without replacing the entire inner layer structure, significantly reducing maintenance costs and material waste.

Description

Technical Field

[0001] This utility model relates to the field of sewage tank technology, specifically to a double-layer sewage tank with replaceable lining. Background Technology

[0002] In the field of wastewater treatment technology, wastewater tanks are core equipment for the temporary storage and pretreatment of wastewater. Their inner walls are in long-term contact with wastewater containing corrosive substances and suspended impurities. Therefore, lining plates are usually installed on the inner walls of the tanks to achieve corrosion and wear protection and extend the overall service life of the wastewater tanks.

[0003] Currently, most sewage tanks on the market adopt a single-layer tank structure, with the liner connected to the inner wall of the tank by welding or adhesive. This structure has obvious drawbacks: First, when the liner is damaged due to corrosion or wear and needs to be replaced, the welded points need to be cut or the adhesive removed, which is cumbersome and can easily cause secondary damage to the inner wall of the tank, resulting in long maintenance cycles and high labor costs. Second, although some double-layer sewage tanks can improve the strength of the tank, the liner still uses an integrated fixed design, which does not solve the problem of replacing the liner separately. Once the liner is damaged, it is often necessary to replace the entire inner structure of the double-layer tank, resulting in material waste.

[0004] In summary, existing sewage tanks are inadequate in terms of the ease of liner replacement and the cost of maintenance. There is an urgent need for a double-layer sewage tank structure that can enable rapid liner replacement, reduce maintenance costs, and does not affect the main structure of the tank, so as to meet the actual needs of efficient operation and maintenance in the sewage treatment field. Utility Model Content

[0005] The purpose of this invention is to provide a double-layer sewage tank with replaceable lining plates to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a double-layer sewage tank with replaceable lining plates, comprising a tank body, a protective edge strip welded to the outer wall edge of the tank body, a plurality of inner lining plates provided inside the tank body, a sealant strip inserted between adjacent inner lining plates, and a sealing strip provided between the inner lining plates and the inner wall of the tank body.

[0007] The number of inner lining plates is consistent with the number of rectangular panels, and is set according to different sizes. The edges of the inner lining plates are bent at 45°, and multiple pressure-bearing protrusions are provided horizontally and equidistantly on the outer side of the inner lining plates.

[0008] The beneficial effects of this utility model are: it achieves graded sealing through a double sealing structure of "sealing strip + sealing strip".

[0009] The sealant strip is made of polytetrafluoroethylene (PTFE). During sewage storage, the sewage pressure can compress the sealant strip, making the sealant blocks and protrusions fit more tightly against the inner lining plate. This automatically enhances the sealing effect between adjacent inner lining plates and effectively prevents sewage from seeping into the gaps in the inner lining plate. The sealing strip is made of ethylene propylene rubber. Its embedded groove precisely fits the edge of the inner lining plate, while the sealant protrusions fill the gaps in the inner lining plate. This can stably maintain the seal between the inner lining plate and the inner wall of the tank, preventing sewage from contacting the tank body and causing corrosion. This double sealing significantly improves the overall leak-proof capability of the sewage tank.

[0010] The inner lining is not fixedly connected to the enclosure, and its edges are bent at 45° to fit the embedded groove of the sealing strip. When replacing it, there is no need to cut the welding points or remove the adhesive. Simply remove the old lining and the corresponding sealant and sealing strip, and then install the new lining and reassemble the sealing components. The operation is simple and will not damage the main body of the enclosure. At the same time, the inner lining is set according to the size of the rectangular panel of the enclosure, and the damaged inner lining can be replaced individually without replacing the entire inner structure, which significantly reduces maintenance costs and material waste.

[0011] Because the liner replacement operation is simple and quick, and does not require complex maintenance of the main body of the tank, the damaged liner can be replaced quickly, which greatly reduces the downtime of the sewage tank. It is especially suitable for small and medium-sized sewage treatment plants, and can effectively reduce the impact of equipment downtime on sewage treatment capacity and ensure the continuous and stable operation of the sewage treatment system.

[0012] Further configuration: The enclosure is composed of multiple rectangular panels assembled by welding, with protective strips wrapped around the outside of the weld seams between the panels, and pressure-bearing feet welded at each corner of the bottom of the enclosure.

[0013] Further configuration: the top of the protective edge strip protrudes from the top of the housing, and its protrusion height is adapted to the height of the pressure-bearing support feet.

[0014] Further configuration: The joint sealant is attached to the inner wall surface of the lining panel. The joint sealant consists of a covering strip and a joint sealant block, which are integrated into one piece. The joint sealant is made of polytetrafluoroethylene.

[0015] The front end of the covering strip is rounded, and its rear end is 90°. Both sides are attached to the surfaces of the two inner lining plates respectively.

[0016] The sealant block has a strip-shaped structure, with raised strips evenly spaced on both sides of its surface, and the raised strips are inclined.

[0017] Further configuration: The sealing strip is made of ethylene propylene rubber.

[0018] Further configuration: the outer surface of the sealing strip is fitted to the inner wall of the box, the inner wall of the sealing strip is symmetrically provided with two embedded grooves that fit the edge of the inner lining plate, and a filling protrusion located between the two embedded grooves is provided between the inner lining plate.

[0019] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0020] Figure 1 This is a frontal half-sectional view of the present invention;

[0021] Figure 2 This is a top view of the present invention;

[0022] Figure 3 This utility model Figure 2 Enlarged diagram of point A in the diagram;

[0023] Figure 4 This is an enlarged schematic diagram of the sealant strip of this utility model;

[0024] Figure 5 This is an enlarged schematic diagram of the sealing strip of this utility model.

[0025] In the diagram: 1. Box body; 2. Protective edge strip; 3. Inner lining plate; 301. Pressure-bearing protrusion strip; 4. Sealing strip; 5. Sealing strip. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0027] Please see Figures 1 to 5 A double-layer sewage tank with replaceable lining plates includes a tank body 1, a protective edge strip 2 welded to the outer edge of the tank body 1, a plurality of inner lining plates 3 provided inside the tank body 1, a sealant strip 4 inserted between adjacent inner lining plates 3, and a sealing strip 5 provided between the inner lining plate 3 and the inner wall of the tank body 1.

[0028] The number of inner lining plates 3 is consistent with the number of rectangular panels, and is set according to different sizes. The edges of the inner lining plates 3 are bent at 45°, and multiple pressure-bearing protrusions 301 are provided horizontally and equidistantly on the outer side of the inner lining plates 3.

[0029] In this embodiment, as Figure 1 As shown, the box body 1 is composed of multiple rectangular panels assembled by welding. Its protective edge strip 2 is wrapped around the outside of the weld seam between the panels. Each corner of the bottom of the box body 1 is also welded with a pressure-bearing support foot.

[0030] In this embodiment, as Figure 1 As shown, the top of the protective edge strip 2 protrudes from the top of the housing 1, and its protrusion height is adapted to the height of the pressure-bearing support foot.

[0031] In this embodiment, as Figure 1 As shown, the joint sealant 4 is attached to the inner wall surface of the inner lining plate 3. The joint sealant 4 consists of a covering strip and a joint sealant block, which are integrated into one piece. The joint sealant 4 is made of polytetrafluoroethylene.

[0032] The front end of the covering strip is rounded, and its rear end is 90°. Both sides are attached to the surfaces of the two inner lining plates 3 respectively.

[0033] The sealant block has a strip-shaped structure, with raised strips evenly spaced on both sides of its surface, and the raised strips are inclined.

[0034] In this embodiment, as Figure 1 As shown, the sealing strip 5 is made of ethylene propylene rubber.

[0035] In this embodiment, as Figure 1 As shown, the outer surface of the sealing strip 5 is fitted with the inner wall of the box 1. The inner wall of the sealing strip 5 is symmetrically provided with two embedded grooves that fit with the edge of the inner lining plate 3. A caulking protrusion located between the two embedded grooves is provided between the inner lining plates 3.

[0036] The working process of this double-layered sewage tank with replaceable lining is as follows:

[0037] First, the enclosure 1 is assembled by welding rectangular panels. Protective edge strips 2 are welded to the outside of the weld seams of the enclosure 1, and pressure-bearing feet are welded to the bottom corners. Then, the sealing strips 5 made of ethylene propylene rubber are attached to the inner wall of the enclosure 1, so that the outer surface of the sealing strips 5 is in close contact with the inner wall of the enclosure 1. Next, according to the size of each rectangular panel of the enclosure 1, the inner lining plates 3 with 45° bent edges are installed in the enclosure 1, so that the edges of the inner lining plates 3 are embedded in the grooves of the sealing strips 5, and the gaps between adjacent inner lining plates 3 are filled by the caulking protrusions of the sealing strips 5. Finally, polytetrafluoroethylene caulking strips 4 are inserted into the inner wall surfaces of adjacent inner lining plates 3, so that the two sides of the caulking strips 4 are attached to the surface of the inner lining plates 3, completing the overall structural assembly.

[0038] When sewage is injected into the tank 1, it exerts pressure on the inner wall of the tank 1. This pressure acts on the sealant strip 4, squeezing the sealant block of the sealant strip 4, causing the inclined protrusions on both sides of the sealant block to further adhere to the inner lining plate 3, enhancing the sealing effect between adjacent inner lining plates 3 and preventing sewage from seeping into the gaps of the inner lining plate 3. On the other hand, the sewage pressure causes the inner lining plate 3 to fit tightly against the sealing strip 5, making the groove of the sealing strip 5 fit more firmly with the edge of the inner lining plate 3. At the same time, the elastic properties of the sealing strip 5 itself can offset some of the impact of sewage pressure on the gap between the tank 1 and the inner lining plate 3, preventing sewage from seeping in from between the inner lining plate 3 and the inner wall of the tank 1, achieving double sealing protection and avoiding sewage contact with the main body of the tank 1 to prevent corrosion.

[0039] When the inner liner 3 is damaged due to corrosion or wear, first drain the sewage from the tank 1; then remove the sealant strip 4 corresponding to the damaged inner liner 3, and then remove the damaged inner liner 3 from the groove of the sealing strip 5; replace the new inner liner 3 and re-insert it into the groove of the sealing strip 5, then insert the new sealant strip 4, ensuring that the sealant strip 4 fits the surface of the inner liner 3; after the assembly is completed, sewage can be refilled to restore the sewage tank to use. The entire maintenance process does not require damage to the main structure of the tank 1, and the liner can be replaced quickly.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A double layer sewage tank with replaceable liner comprising a tank body (1), characterized in that, The outer wall edge of the box (1) is welded with a protective edge strip (2), and the inside of the box (1) is provided with multiple inner lining plates (3). A sealant strip (4) is inserted between adjacent inner lining plates (3), and a sealing strip (5) is provided between the inner lining plate (3) and the inner wall of the box (1). The number of inner lining plates (3) is consistent with the number of rectangular panels, and is set according to different sizes. The edges of the inner lining plates (3) are bent at 45°. Multiple pressure-bearing protrusions (301) are provided horizontally and equidistantly on the outer side of the inner lining plates (3).

2. The replaceable liner double wall sewage tank according to claim 1, wherein, The box (1) is composed of multiple rectangular panels welded together. Its protective strip (2) is wrapped around the outside of the weld seam between the panels. Each corner of the bottom of the box (1) is also welded with a pressure-bearing support.

3. The replaceable liner double wall sewage tank of claim 1, wherein, The top of the protective strip (2) protrudes from the top of the box body (1), and its protrusion height is adapted to the height of the pressure-bearing support foot.

4. The replaceable liner double wall sewage tank of claim 1, wherein, The joint filler strip (4) is attached to the inner wall surface of the inner lining plate (3). The joint filler strip (4) consists of a covering strip and a joint filler block, which are integrated into one piece. The joint filler strip (4) is made of polytetrafluoroethylene. The front end of the adhesive strip is rounded, and its rear end is 90°. Both sides are attached to the surfaces of the two inner lining plates (3). The sealant block has a strip-shaped structure, with raised strips evenly spaced on both sides of its surface, and the raised strips are inclined.

5. The replaceable liner double wall sewage tank of claim 1, wherein, The sealing strip (5) is made of ethylene propylene rubber.

6. The replaceable liner double wall sewage tank of claim 1, wherein, The outer surface of the sealing strip (5) is fitted to the inner wall of the box (1). The inner wall of the sealing strip (5) is symmetrically provided with two embedded grooves that fit the edge of the inner lining plate (3). A filling protrusion located between the two embedded grooves is provided between the inner lining plates (3).

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