Glass fiber reinforced plastic square tank
The fiberglass square storage tank, with its integral molding and corrugated design, solves the problems of insufficient sealing and durability, achieving high sealing reliability and structural strength, and is suitable for chemical and environmental protection fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNMING ZHONGTIANDA GLASS STEEL DEV CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-23
Smart Images

Figure CN224393582U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fiberglass technology, and more specifically, to a fiberglass square storage tank. Background Technology
[0002] Fiberglass square storage tanks are square or rectangular storage containers made primarily of fiberglass reinforced plastic (FRP). They are widely used in chemical, environmental protection, and new energy fields for storing corrosive liquids, chemicals, wastewater, and other media.
[0003] Currently, the utility model patent with announcement number CN213474195U provides a detachable fiberglass square storage tank, which solves the cleaning and transportation problems of traditional fiberglass storage tanks through a detachable snap-fit structure. However, in the actual use of fiberglass square storage tanks, their design, usage scenarios, and safety requirements dictate that they should be mainly in a fixed state during normal use. Frequent movement is neither practical nor in line with the safety operation standards of equipment, thus their practicality is low.
[0004] Furthermore, the detachable snap-fit structure sacrifices sealing reliability and structural strength, and the introduction of metal components increases corrosion risk and maintenance costs. Therefore, the aforementioned FRP square storage tanks are only suitable for small-scale, non-pressurized, non-corrosive media storage scenarios (such as water tanks), but cannot meet the high requirements for sealing and durability in fields such as chemical engineering and environmental protection. Utility Model Content
[0005] The purpose of this utility model is to provide a fiberglass square storage tank that can provide effective sealing reliability and structural strength, meeting the high requirements for sealing and durability in the fields of chemical industry and environmental protection.
[0006] The embodiments of this utility model are achieved through the following technical solutions:
[0007] A fiberglass square storage tank includes a base plate, a square tank body on the top of the base plate, the base plate and the square tank body being formed by one-time molding, the four corners of the square tank body being rounded, and wavy pleats being provided on the inner and outer sides of the four corners of the square tank body, the wavy pleats extending vertically to the top of the base plate; a top cover that matches the square tank body is provided on the top of the square tank body.
[0008] In some embodiments, the bottom of the top cover is provided with a groove whose shape matches the top of the square groove, and the inner wall of the top of the groove is provided with a quick-release sealing mechanism.
[0009] In some embodiments, the quick-release sealing mechanism includes a relief groove disposed on the surface of the groove, a screw fixedly connected in the relief groove, an elastic sealing strip disposed on the outside of the screw, a groove on one side of the elastic sealing strip that matches the head of the screw, and an arc-shaped convex surface on the other side of the elastic sealing strip.
[0010] In some embodiments, the sidewall of the groove is also provided with the quick-release sealing mechanism.
[0011] In some embodiments, a drain outlet is provided at the bottom of one side of the square trough, and a sealing plug is installed on the drain outlet; the top surface of the base plate is provided with a slope, and the bottom end of the slope is located on the side close to the drain outlet.
[0012] In some embodiments, the surface of the slope is provided with a guide channel, the bottom end of which points to the inner end of the drain outlet.
[0013] In some embodiments, the base plate has a honeycomb-shaped interlayer embedded inside.
[0014] In some embodiments, the surfaces of both the top cover and the square groove are provided with a fiberglass grid structure.
[0015] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:
[0016] 1. In this application, the base plate and the square tank are integrally molded, completely eliminating the snap-fit design of traditional detachable structures. This eliminates gaps between detachable parts, fundamentally improving sealing reliability, and avoids the introduction of metal connectors. The use of fiberglass material eliminates the possibility of electrochemical corrosion from the source.
[0017] 2. This device significantly improves crack resistance and the strength of the square tank by using rounded corners at the four corners and incorporating vertically extending wavy pleats on both the inner and outer sides. This effectively expands the practicality of FRP square storage tanks, meeting the high requirements for sealing and durability in chemical, environmental protection, and other fields. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the internal structure of a fiberglass square storage tank provided in an embodiment of the present invention;
[0020] Figure 2 This is a top view of the square groove provided in an embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of the quick-release sealing mechanism provided in an embodiment of the present invention.
[0022] Icons: 1. Base plate; 2. Square groove; 3. Rounded corners; 4. Wavy pleats; 5. Top cover; 6. Groove; 7. Quick-release sealing mechanism; 8. Relief groove; 9. Screw; 10. Elastic sealing strip; 11. Slot; 12. Arc-shaped convex surface; 13. Drain outlet; 14. Sealing plug; 15. Slope; 16. Guide channel; 17. Honeycomb interlayer; 18. Fiberglass grid structure. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of 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 some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0026] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] Please see Figures 1-2 As shown, the main body of this embodiment is a fiberglass square storage tank, including a base plate 1. A square tank body 2 is provided on the top of the base plate 1. The base plate 1 and the square tank body 2 are formed by one-time molding. The four corners of the square tank body 2 are rounded corners 3. Wavy pleats 4 are provided on the inner and outer sides of the four corners of the square tank body 2. The wavy pleats 4 extend vertically to the top of the base plate 1. A top cover 5 that cooperates with the square tank body 2 is provided on the top of the square tank body 2.
[0029] Furthermore, the bottom of the top cover 5 is provided with a groove 6 whose shape matches the top of the square groove 2, and the inner wall of the top of the groove 6 is provided with a quick-release sealing mechanism 7.
[0030] Furthermore, the quick-release sealing mechanism 7 includes a relief groove 8 disposed on the surface of the groove 6, and a screw 9 is fixedly connected in the relief groove 8. The screw 9 is made of glass fiber reinforced nylon material, and an elastic sealing strip 10 is provided on the outside of the screw 9. One side of the elastic sealing strip 10 is provided with a groove 11 that matches the head of the screw 9; the other side of the elastic sealing strip 10 is provided with an arc-shaped convex surface 12.
[0031] Furthermore, the sidewall of the groove 6 is also provided with the quick-release sealing mechanism 7.
[0032] Furthermore, a drain outlet 13 is provided on one side of the bottom of the square trough 2, and a sealing plug 14 is installed on the drain outlet 13; a slope 15 is provided on the top surface of the bottom plate 1, and the bottom end of the slope 15 is located on the side close to the drain outlet 13.
[0033] Furthermore, the surface of the slope 15 is provided with a guide channel 16, the bottom end of which points to the inner end of the drain outlet 13.
[0034] Furthermore, a honeycomb-shaped interlayer 17 is embedded inside the base plate 1.
[0035] Furthermore, both the top cover 5 and the square groove 2 are provided with fiberglass grid structures 18.
[0036] In this application, the base plate 1 and the square tank 2 are integrally molded, completely eliminating the traditional snap-fit design of detachable structures. This process eliminates gaps between detachable parts, fundamentally improving sealing reliability. The integrally molded fiberglass storage tank significantly reduces the risk of leakage during long-term use. Simultaneously, this process avoids the introduction of metal connectors, using only fiberglass material, thus eliminating the possibility of electrochemical corrosion at the source.
[0037] In addition, the four corners of the square tank 2 are rounded 3, and vertically extending wavy folds 4 are set on the inner and outer sides. By increasing the surface area and flexible deformation capacity, the stress concentration caused by hydrostatic pressure and temperature changes is effectively dispersed. This design can reduce the stress peak in the four corner areas and significantly improve crack resistance.
[0038] In addition, the folds extend vertically to the top of the bottom plate 1, forming a continuous reinforcing rib structure, which is equivalent to building "invisible support columns" at the four corners of the storage tank. This design improves the overall deformation resistance of the storage tank, and is especially suitable for the bottom support of large storage tanks, thereby greatly increasing the strength of the square tank body 2.
[0039] Secondly, the arc-shaped convex surface 12 of the elastic sealing strip 10 forms a line contact seal with the top of the groove during installation. The manufacturing tolerance is compensated by elastic deformation to ensure stable sealing pressure within a certain temperature range.
[0040] It is worth mentioning that the side walls and top surface of the groove 6 in the top cover 5 are equipped with quick-release sealing mechanisms 7, forming a double sealing barrier of "top surface-side". This design draws on the vacuum-assisted sealing concept of electrolytic cells. Through the multi-directional compression of the elastic sealing strip 10, the gas leakage path length is greater than that of traditional single-seal, which can meet the stringent sealing requirements of the chemical industry for volatile organic compounds (such as VOCs). Furthermore, the head of the screw 9 can be quickly separated from the slot 11, achieving a quick-release effect, which facilitates later maintenance and cleaning.
[0041] It is worth mentioning that a honeycomb sandwich layer 17 is embedded inside the bottom plate 1, thereby achieving high strength of the bottom plate 1 while achieving lightweight, increasing the bending stiffness of the bottom plate 1, and reducing the amount of bottom deformation when the storage tank is filled with medium.
[0042] It is worth mentioning that the top cover 5 and the surface of the tank are covered with a fiberglass grid structure 18, which reduces the weight of the square storage tank and improves its impact resistance.
[0043] It is worth mentioning that the top surface of the base plate 1 is provided with a slope 15, which, together with the guide channel 16, forms an efficient drainage path; the slope of the slope 15 is designed to be 3° to 5°, so that the liquid flows automatically to the drain outlet 13 under the action of gravity, avoiding liquid residue and facilitating drainage for subsequent cleaning.
[0044] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A fiberglass square storage tank, characterized in that, Includes a base plate (1), the top of which is provided with a square groove (2), the base plate (1) and the square groove (2) are formed by one-time molding, the four corners of the square groove (2) are rounded (3), and the inner and outer sides of the four corners of the square groove (2) are provided with wavy pleats (4), the wavy pleats (4) extend vertically to the top of the base plate (1); the top of the square groove (2) is provided with a top cover (5) that matches the square groove (2).
2. The fiberglass square storage tank according to claim 1, characterized in that, The bottom of the top cover (5) is provided with a groove (6) whose shape matches the top of the square groove (2), and the inner wall of the top of the groove (6) is provided with a quick-release sealing mechanism (7).
3. A fiberglass square storage tank according to claim 2, characterized in that, The quick-release sealing mechanism (7) includes a relief groove (8) provided on the surface of the groove (6), a screw (9) is fixedly connected in the relief groove (8), an elastic sealing strip (10) is provided on the outside of the screw (9), one side of the elastic sealing strip (10) is provided with a groove (11) that matches the head of the screw (9); the other side of the elastic sealing strip (10) is provided with an arc-shaped convex surface (12).
4. A fiberglass square storage tank according to claim 3, characterized in that, The sidewall of the groove (6) is also provided with the quick-release sealing mechanism (7).
5. A fiberglass square storage tank according to claim 1, characterized in that, The square trough (2) has a drain outlet (13) at the bottom of one side, and a sealing plug (14) is installed on the drain outlet (13); the top surface of the bottom plate (1) has a slope (15), and the bottom end of the slope (15) is located on the side close to the drain outlet (13).
6. A fiberglass square storage tank according to claim 5, characterized in that, The surface of the slope (15) is provided with a guide groove (16), the bottom end of which points to the inner end of the drain outlet (13).
7. A fiberglass square storage tank according to claim 1, characterized in that, The base plate (1) has a honeycomb sandwich layer (17) embedded inside.
8. A fiberglass square storage tank according to claim 7, characterized in that, The surfaces of the top cover (5) and the square groove (2) are both provided with fiberglass grid structures (18).