Replaceable polytetrafluoroethylene storage tank lining plate structure
By introducing an electric push rod and lifting plate assembly into the PTFE storage tank, combined with a limiting ring, buffer pad, and venting groove, the problem of inconvenient disassembly of the PTFE storage tank liner is solved, achieving stable insertion and easy disassembly, thus improving assembly efficiency and ease of replacement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-14
AI Technical Summary
The existing PTFE storage tank liner is difficult to disassemble after being inserted into the tank body, which affects subsequent assembly and replacement.
A replaceable PTFE tank liner structure is designed, which uses an electric push rod and lifting plate assembly, combined with a limiting ring, buffer pad and venting groove, to achieve stable insertion and easy disassembly of the PTFE inner liner.
It enables stable insertion and easy disassembly of the PTFE inner liner, improving assembly efficiency and ease of replacement, and reducing operational complexity.
Smart Images

Figure CN224118005U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of PTFE storage tank technology, specifically relating to a replaceable PTFE storage tank liner structure. Background Technology
[0002] Steel-lined polytetrafluoroethylene (PTFE) storage tanks (including tanks, containers, and vessels) are widely used in chemical, fertilizer, pharmaceutical, pesticide, and construction industries due to their excellent corrosion resistance and resistance to alternating high and low temperatures. These tanks typically use PTFE sheets as the inner lining, which are then welded to the inner wall of the metal tank using a fully manual process. This creates a smooth, robust, and even inner surface, effectively isolating the metal tank from corrosive media and replacing traditional corrosion-resistant containers such as enamel-lined or rubber-lined ones.
[0003] In current technology, the internal liner of PTFE storage tanks is installed by inserting the liner into the tank body during assembly. After installation and fixation, it is inconvenient to disassemble, which affects subsequent assembly. Therefore, it is necessary to design a replaceable PTFE storage tank liner structure to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a replaceable PTFE storage tank liner structure to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a replaceable PTFE storage tank liner structure, including a tank body, a support leg fixedly connected to the bottom of the tank body, and mounting holes equidistantly opened at the opening position of the tank body. A PTFE inner liner is inserted into the inside of the tank body, and a limit ring is fixedly connected to the opening position of the PTFE inner liner.
[0006] A lifting assembly is installed at the bottom of the tank. The lifting assembly includes an electric push rod fixedly connected to the bottom of the tank and a lifting plate driven by the transmission output end of the electric push rod.
[0007] Preferably, the tank body has buffer grooves equidistantly spaced around its inner bottom circumference, and the bottom end of the PTFE inner liner is fixedly connected to a buffer pad, with the buffer pad and the buffer grooves being inserted into each other.
[0008] Preferably, the bottom of the tank is provided with an exhaust groove, and the exhaust groove and the buffer groove are arranged alternately at equal intervals.
[0009] Preferably, a limiting groove is provided at the opening position of the tank, and the limiting ring and the limiting groove are inserted into each other.
[0010] Preferably, a through hole is provided at the middle position of the bottom of the tank, and the through hole and the exhaust groove of the tank are connected.
[0011] Preferably, the fixed end of the electric push rod is fixedly connected to a mounting base, and the surface of the mounting base is provided with mounting holes.
[0012] Preferably, the transmission end of the electric push rod passes through the through hole of the tank body, and the lifting plate is located inside the tank body.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. When assembling the PTFE liner relative to the tank body, the buffer pads and buffer grooves of the PTFE liner are inserted and correspond to each other, providing excellent buffer protection. An exhaust groove is provided at the bottom of the tank body. The exhaust groove and buffer groove are arranged alternately at equal intervals. The exhaust groove is designed to expel residual air inside the tank body, facilitating assembly. After the electric push rod of the lifting assembly is energized, the lifting plate connected to the transmission output end of the electric push rod is driven to lift the PTFE liner longitudinally. This makes it easier to disassemble the tank body, simplifying the operation and facilitating the replacement of the internal PTFE liner.
[0015] 2. The fixed end of the electric push rod is fixedly connected to an assembly base. The surface of the assembly base has an assembly hole. The assembly base fits against the bottom of the tank. A locking element passes through the assembly hole of the assembly base for easy assembly and fixing. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the tank of this utility model;
[0018] Figure 3 This is a schematic diagram of the tank body and electric push rod structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the PTFE inner liner structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the lifting plate and electric push rod structure of this utility model.
[0021] In the diagram: 1. Tank body; 2. Mounting hole; 3. Support leg; 4. PTFE inner liner; 5. Limiting ring; 6. Buffer pad; 7. Limiting groove; 8. Buffer groove; 9. Exhaust groove; 10. Lifting plate; 11. Electric push rod; 12. Assembly base; 13. Assembly hole. Detailed Implementation
[0022] 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.
[0023] Example 1: Please refer to Figures 1 to 5 This utility model provides a replaceable PTFE storage tank liner structure technical solution: including a tank body 1, a support leg 3 fixedly connected to the bottom of the tank body 1, and mounting holes 2 equidistantly opened at the opening position of the tank body 1. The mounting holes 2 are designed to allow for the installation of a cover plate at the top opening position of the tank body 1. A PTFE inner liner 4 is inserted into the inside of the tank body 1. A limiting ring 5 is fixedly connected to the opening position of the PTFE inner liner 4. The PTFE inner liner 4 is inserted into the inside of the tank body 1. The limiting ring 5 and the limiting groove 7 are inserted into each other, the insertion process is stable, and the limiting effect is good.
[0024] A lifting assembly is installed at the bottom of the tank body 1. The lifting assembly includes an electric push rod 11 fixedly connected to the bottom of the tank body 1. The electric push rod 11 is of model KMNTL. After the electric push rod 11 of the lifting assembly is energized, it drives the lifting plate 10 connected to the transmission output end of the electric push rod 11. The PTFE inner liner 4 is lifted longitudinally by the lifting plate 10, which makes it more convenient to disassemble the tank body 1, and the operation process is simple, making it easy to replace the internal PTFE inner liner 4.
[0025] The tank body 1 has buffer grooves 8 evenly spaced around its inner bottom circumference. The bottom of the PTFE liner 4 is fixedly connected to a buffer pad 6. The buffer pad 6 and the buffer groove 8 are inserted into each other. The buffer pad 6 is made of flexible material and its outer diameter is smaller than the inner diameter of the buffer groove 8. When the PTFE liner 4 is assembled relative to the tank body 1, the buffer pad 6 and the buffer groove 8 of the PTFE liner 4 are inserted into each other, which has a good buffering and protection effect. The tank body 1 has an exhaust groove 9 at its inner bottom. The exhaust groove 9 and the buffer groove 8 are arranged alternately at equal intervals. The exhaust groove 9 is designed to expel residual air inside the tank body 1 and facilitates assembly. The opening of the tank body 1 is provided with a limit groove 7. The limit ring 5 and the limit groove 7 are inserted into each other. The limit groove 7 limits the limit ring 5.
[0026] As can be seen from the above description, this utility model has the following beneficial effects: The opening position of the PTFE inner liner 4 is fixedly connected to the limiting ring 5, and the PTFE inner liner 4 is inserted into the inside of the tank body 1. The limiting ring 5 and the limiting groove 7 are inserted and correspond to each other, the insertion process is stable, and the limiting effect is good; When assembling the PTFE inner liner 4 relative to the tank body 1, the buffer pad 6 and the buffer groove 8 of the PTFE inner liner 4 are inserted and correspond to each other, which has a good buffer protection effect. An exhaust groove 9 is opened at the bottom of the inside of the tank body 1. The exhaust groove 9 and the buffer groove 8 are arranged alternately at equal intervals. The exhaust groove 9 is set to discharge the residual air inside the tank body 1, which is convenient for assembly; After the electric push rod 11 of the lifting component is energized, the lifting plate 10 is connected to the transmission output end of the electric push rod 11. The PTFE inner liner 4 is lifted longitudinally by the lifting plate 10, which makes it more convenient to disassemble relative to the tank body 1. The operation process is simple and it is convenient to replace the internal PTFE inner liner 4.
[0027] Example 2: Please refer to Figures 1 to 5 As shown, based on Embodiment 1, this utility model provides a technical solution for a replaceable PTFE storage tank liner structure: a through hole is provided at the middle of the bottom of the tank body 1, and the through hole and the vent groove 9 of the tank body 1 are connected. The fixed end of the electric push rod 11 is fixedly connected to the mounting base 12, and the surface of the mounting base 12 is provided with the mounting hole 13. The mounting base 12 fits against the bottom of the tank body 1, and a locking member is used to pass through the mounting hole 13 of the mounting base 12 for easy assembly and fixing. The transmission end of the electric push rod 11 passes through the through hole of the tank body 1. The lifting plate 10 is located inside the tank body 1, and the lifting plate 10 lifts the PTFE inner liner 4.
[0028] Using the above technical solution, the fixed end of the electric push rod 11 is fixedly connected to the mounting base 12. The surface of the mounting base 12 is provided with mounting holes 13. The mounting base 12 is attached to the bottom of the tank body 1. A locking member is used to pass through the mounting holes 13 of the mounting base 12 for easy assembly and fixing.
[0029] The working principle and usage process of this utility model are as follows: A limiting ring 5 is fixedly connected to the opening of the PTFE liner 4. The PTFE liner 4 is inserted into the inside of the tank body 1. The limiting ring 5 and the limiting groove 7 are inserted and correspond, ensuring a stable insertion process and good limiting effect. When assembling the PTFE liner 4 relative to the tank body 1, the buffer pad 6 of the PTFE liner 4 and the buffer groove 8 are inserted and correspond, providing excellent buffering and protection. An exhaust groove 9 is provided at the bottom of the inside of the tank body 1. The exhaust groove 9 and the buffer groove 8 are arranged alternately at equal intervals. The exhaust groove 9 allows residual air inside the tank body 1 to be discharged. This facilitates assembly and processing. After the electric push rod 11 of the lifting assembly is energized, the lifting plate 10, which is connected to the transmission output end of the electric push rod 11, lifts the PTFE inner liner 4 longitudinally through the lifting plate 10. This makes it easier to disassemble the tank body 1, and the operation process is simple, making it convenient to replace the internal PTFE inner liner 4. The fixed end of the electric push rod 11 is fixedly connected to the mounting base 12. The surface of the mounting base 12 has a mounting hole 13. The mounting base 12 fits against the bottom of the tank body 1. A locking piece passes through the mounting hole 13 of the mounting base 12 for easy assembly and fixing.
[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0031] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A replaceable PTFE storage tank liner structure, comprising a tank body (1), support legs (3) fixedly connected to the bottom of the tank body (1), and mounting holes (2) equidistantly spaced at the opening positions of the tank body (1), characterized in that: The tank body (1) is fitted with a PTFE inner liner (4), and a limit ring (5) is fixedly connected to the opening of the PTFE inner liner (4). A lifting assembly is installed at the bottom of the tank (1). The lifting assembly includes an electric push rod (11) fixedly connected to the bottom of the tank (1) and a lifting plate (10) connected to the transmission output end of the electric push rod (11).
2. The replaceable PTFE storage tank liner structure according to claim 1, characterized in that: The tank body (1) has buffer grooves (8) evenly spaced at the bottom of the inner circumference. The bottom of the PTFE inner liner (4) is fixedly connected to a buffer pad (6). The buffer pad (6) and the buffer groove (8) are inserted into each other.
3. The replaceable PTFE storage tank liner structure according to claim 1, characterized in that: The tank (1) has an exhaust groove (9) at the bottom of its interior, and the exhaust groove (9) and the buffer groove (8) are arranged alternately at equal intervals.
4. The replaceable PTFE storage tank liner structure according to claim 1, characterized in that: The opening of the tank (1) is provided with a limiting groove (7), and the limiting ring (5) and the limiting groove (7) are inserted into each other.
5. The replaceable PTFE storage tank liner structure according to claim 1, characterized in that: A through hole is provided at the middle position of the bottom of the tank (1), and the through hole and the exhaust groove (9) of the tank (1) are connected.
6. The replaceable PTFE storage tank liner structure according to claim 1, characterized in that: The fixed end of the electric push rod (11) is fixedly connected to the mounting base (12), and the surface of the mounting base (12) is provided with mounting holes (13).
7. The replaceable PTFE storage tank liner structure according to claim 1, characterized in that: The transmission end of the electric push rod (11) passes through the through hole of the tank body (1), and the lifting plate (10) is located inside the tank body (1).