Glass fiber reinforced plastic storage tank

Abstract

The utility model relates to a glass fiber reinforced plastic storage tank which comprises a tank body and further comprises a first round pipe, a second round pipe and a sealing piece, the first round pipe is communicated with the top of the tank body, the top face of the first round pipe is sunken downwards to form an annular groove, and the lower portion of the second round pipe is fixedly arranged outside the first round pipe in a sleeved mode. The sealing piece comprises a bearing plate, a clamping ring, a sealing ring and a connecting rod, the bearing plate is arranged in the second round pipe, the clamping ring is fixed to the bottom face of the bearing plate, the clamping ring is sleeved with the sealing ring through the annular groove, air holes are formed in the bearing plate in an array mode, the bearing plate makes contact with the upper end of the first round pipe, and the sealing ring stretches into the annular groove along with the clamping ring. A bearing cylinder covering the multiple air holes is fixed to the top face of the bearing plate, the connecting rod movably penetrates through a top plate of the bearing cylinder, the lower end of the connecting rod is connected with a piston plate located in the bearing cylinder, and the upper portion of the connecting rod is sleeved with a connecting rod in threaded connection with a second round pipe. The glass fiber reinforced plastic storage tank solves the problem that a sealing ring of an existing glass fiber reinforced plastic storage tank is prone to abrasion, and consequently sealing performance is insufficient.

Description

Technical Field

[0001] The utility model relates to the technical field of storage tanks, and particularly relates to a glass fiber reinforced plastic storage tank. Background Art

[0002] A glass fiber reinforced plastic storage tank is a liquid storage container made of glass fiber reinforced plastic (FRP). It is made by a specific process with glass fiber as the reinforcing agent and resin as the binder. The glass fiber reinforced plastic storage tank has a low density, but its tensile strength is close to or even exceeds that of carbon steel, so it has the characteristics of light weight and high strength.

[0003] The sealing performance of a glass fiber reinforced plastic storage tank is an important part of its performance and safety. Ensuring that the liquid or gas in the storage tank does not leak is crucial for preventing environmental pollution, protecting personnel safety, and maintaining the continuity of the production process. During the use of existing storage tanks, there is often only a single sealing ring structure on the tank cover at the top. When the sealing ring wears, it is likely to result in a poor sealing effect. Summary of the Invention

[0004] The utility model aims to solve the problem that the sealing ring of the existing glass fiber reinforced plastic storage tank is prone to wear, resulting in insufficient sealing performance, and provides a glass fiber reinforced plastic storage tank that can improve the sealing effect of the glass fiber reinforced plastic storage tank.

[0005] To solve the above problems, the technical solution of the utility model is as follows:

[0006] A glass fiber reinforced plastic storage tank includes a tank body, and also includes a first round tube, a second round tube, and a sealing member. The first round tube communicates with the top of the tank body. A circular groove is recessed downward on the top surface of the first round tube. The lower part of the second round tube is sleeved and fixed outside the first round tube. The sealing member includes a bearing plate, a snap ring, a sealing ring, and a connecting rod. The bearing plate is arranged inside the second round tube. A snap ring is fixed to the bottom surface of the bearing plate. The sealing ring is sleeved outside the snap ring through a circular ring groove opened at the top. The upper ends of both sides of the circular ring groove of the sealing ring are respectively connected to the upper ends of the inner and outer sides of the snap ring. The bearing plate is provided with air holes in an array. Each air hole penetrates downward through the bearing plate and the snap ring. The bearing plate contacts the upper end of the first round tube, and the sealing ring extends into the circular groove along with the snap ring. A bearing cylinder covering the plurality of air holes is fixed to the top surface of the bearing plate. The connecting rod movably penetrates the top plate of the bearing cylinder. The lower end of the connecting rod is connected to a piston plate located inside the bearing cylinder. A connecting plate threadedly connected to the second round tube is sleeved outside the upper part of the connecting rod.

[0007] Further, a sealing ring that slidably contacts the inner side surface of the bearing cylinder is provided on the circumferential surface of the piston plate. The lower end of the connecting rod is rotatably connected to the piston plate. A limiting rod is connected between the inner top surface of the bearing cylinder and the bearing plate. The limiting rod penetrates the piston plate.

[0008] Further, the sealing ring is an annular body made of elastic rubber. When the piston plate contacts the inner top surface of the bearing plate, the sealing ring is in a natural state. The distance from the inner ring to the outer ring of the sealing ring corresponds to the distance from the inner ring to the outer ring of the annular groove, and the annular groove and the snap ring correspond to each other.

[0009] Further, a plurality of annular arc grooves 1 are provided at intervals from top to bottom on the outer side surface of the annular groove, and a plurality of annular arc grooves 2 are provided at intervals from top to bottom on the inner side surface.

[0010] Further, after the gas in the bearing cylinder is driven by the piston plate to enter the annular groove through the air hole, the outer wall of the sealing ring is embedded in each arc groove 1, and the inner wall of the sealing ring is embedded in each arc groove 2.

[0011] Further, a thread 1 is provided on the inner wall of the second circular tube on the upper side of the first circular tube, and a thread 2 corresponding to the thread 1 is provided on the circumferential surface of the connecting plate.

[0012] By the above technical solutions, the beneficial effects of the present utility model are as follows:

[0013] After the snap ring and the sealing ring extend into the annular groove in the present utility model, during the process of the connecting plate connecting the second circular tube, the connecting plate drives the piston plate to move downward through the connecting rod. The piston plate drives the gas in the bearing cylinder to drive the sealing ring to expand. The sealing ring is squeezed and expanded by the gas in the annular groove, enhancing the sealing performance between the sealing ring and the annular groove. The outer wall of the sealing ring is embedded in each arc groove 1, and the inner wall of the sealing ring is embedded in each arc groove 2, further enhancing the sealing performance between the sealing ring and the annular groove; therefore, the sealing effect can be improved.

[0014] The present utility model is less affected by the wear of the sealing ring and improves the service life of the sealing ring. Description of the Drawings

[0015] Figure 1 is the main sectional view of the present utility model;

[0016] Figure 2 is Figure 1 the partial enlarged view at A in

[0017] Figure 3 is the structural schematic diagram of the connecting rod, connecting plate and piston plate connection of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the bearing plate connecting the snap ring of the present utility model Figure 1 ;

[0019] Figure 5 is the structural schematic diagram of the bearing plate connecting the snap ring of the present utility model Figure 2 ;

[0020] Figure 6It is a schematic structural view of the sealing ring of the present utility model.

[0021] The reference numerals in the drawings are: 1, tank body; 2, first circular pipe; 3, second circular pipe; 4, annular groove; 5, bearing plate; 6, snap ring; 7, sealing ring; 8, connecting rod; 9, circular ring groove; 10, air hole; 11, bearing cylinder; 12, piston plate; 13, connecting plate; 14, sealing ring; 15, limiting rod; 17, first arc groove; 18, second arc groove; 19, first thread; 20, second thread; 21, rotating plate. Specific embodiments

[0022] The present utility model will be further described below in conjunction with the drawings and specific embodiments:

[0023] As Figures 1 to 6 shown, a fiberglass storage tank includes a tank body 1, and also includes a first circular pipe 2, a second circular pipe 3 and a sealing member. Both ends of the first circular pipe 2 are open, and the first circular pipe 2 communicates with the top of the tank body 1. The top surface of the first circular pipe 2 is recessed downward to form an annular groove 4. Both ends of the second circular pipe 3 are open, and the inner diameter of the second circular pipe 3 matches the outer diameter of the first circular pipe 2. The lower part of the second circular pipe 3 is sleeved and fixed outside the first circular pipe 2. The sealing member includes a bearing plate 5, a snap ring 6, a sealing ring 7 and a connecting rod 8. The bearing plate 5 is arranged inside the second circular pipe 3. The bearing plate 5 is a circular plate body, and a snap ring 6 is fixed on the bottom surface of the bearing plate 5. The sealing ring 7 is sleeved outside the snap ring 6 through a circular ring groove 9 opened at the top. The upper ends of both sides of the circular ring groove 9 on the sealing ring 7 are respectively connected to the upper ends of the inner and outer side surfaces of the snap ring 6. The bearing plate 5 is provided with air holes 10 in an array. Each air hole 10 penetrates downward through the bottom surface of the bearing plate 5 and the bottom surface of the snap ring 6. The bearing plate 5 contacts the upper end of the first circular pipe 2, and the sealing ring 7 extends into the annular groove 4 along with the snap ring 6. A bearing cylinder 11 covering a plurality of air holes 10 is fixed on the top surface of the bearing plate 5. The bearing cylinder 11 is a circular cylinder body with an open bottom end, and the outer diameter of the bearing cylinder 11 is smaller than the inner diameter of the second circular pipe 3. The connecting rod 8 movably penetrates the top plate of the bearing cylinder 11. The lower end of the connecting rod 8 is connected to a piston plate 12 located inside the bearing cylinder 11. A connecting plate 13 threadedly connected to the second circular pipe 3 is sleeved outside the upper part of the connecting rod 8. The upper end of the connecting rod 8 is connected to a rotating plate 21.

[0024] The piston plate 12 is a circular ring plate. A sealing ring 14 that is in sliding contact with the inner side surface of the bearing cylinder 11 is provided on the circumferential surface of the piston plate 12. The lower end of the connecting rod 8 is rotatably connected to the piston plate 12. A limiting rod 15 is connected between the inner top surface of the bearing cylinder 11 and the bearing plate 5. The limiting rod 15 penetrates the piston plate 12.

[0025] The sealing ring 7 is a circular ring body made of elastic rubber. When the piston plate 12 contacts the inner top surface of the bearing plate 5, the sealing ring 7 is in a natural state. The distance from the inner ring to the outer ring of the sealing ring 7 matches the distance from the inner ring to the outer ring of the annular groove 4. The circular ring groove 9 matches the snap ring 6.

[0026] The outer side surface of the annular groove 4 is provided with a plurality of annular arc grooves one 17 at intervals from top to bottom, and the inner side surface is provided with a plurality of annular arc grooves two 18 at intervals from top to bottom; the outer side surface of the annular groove 4 is the side surface far from the inner wall of the first circular tube 2, and the inner side surface is the side surface close to the inner wall of the first circular tube 2.

[0027] After the piston plate 12 drives the gas in the bearing cylinder 11 to enter the circular ring groove 9 through the air holes 10, the outer wall of the sealing ring 7 is embedded in each arc groove one 17, and the inner wall of the sealing ring 7 is embedded in each arc groove two 18.

[0028] A first thread 19 is provided on the inner wall of the second circular tube 3 on the upper side of the first circular tube 2. The connecting plate 13 is a circular plate body, and a second thread 20 matching the first thread 19 is provided on the circumferential surface of the connecting plate 13.

[0029] Before the tank body 1 needs to be sealed, when the connecting plate 13 on the sealing member is not connected to the second circular tube 3, the piston plate 12 is made to contact the inner top surface of the bearing cylinder 11. At this time, the sealing ring 7 is in a natural state, and the circular ring groove 9 on the sealing ring 7 contacts the side surface of the snap ring 6;

[0030] When the tank body 1 needs to be sealed, the bearing plate 5 is made to drive the snap ring 6 to extend into the annular groove 4 of the first circular tube 2. The sealing ring 7 enters the annular groove 4 along with the snap ring 6. The sealing ring 7 contacts the side surface of the annular groove 4, and the bearing plate 5 contacts the upper end of the first circular tube 2. Then, the connecting rod 8 is made to drive the connecting plate 13 to rotate. The connecting plate 13 is threadedly connected to the second circular tube 3 and moves downward. The sealing member is connected to the second circular tube 3 through the connecting plate 13. During the downward movement of the connecting rod 8, the piston plate 12 is driven to move downward. The piston plate 12 drives the gas in the bearing cylinder 11 to enter the circular ring groove 9 of the sealing ring 7 through a plurality of air holes 10. The sealing ring 7 is extruded and expanded by the gas in the circular ring groove 9, enhancing the contact between the sealing ring 7 and the side surface of the annular groove 4, and enhancing the sealing performance between the sealing ring 7 and the annular groove 4. The outer wall of the sealing ring 7 is embedded in each arc groove one 17, and the inner wall of the sealing ring 7 is embedded in each arc groove two 18, further enhancing the sealing performance between the sealing ring 7 and the annular groove 4;

[0031] Moreover, even after the outer side surface of the sealing ring 7 is worn, the piston plate 12 is driven to move downward by the connecting rod 8, and the sealing ring 7 will still be in close contact with the side surface of the annular groove 4 under the action of the gas, improving the service life of the sealing ring 7 and the sealing effect of the tank body 1.

[0032] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Without departing from the spirit of the present invention, that is, within the scope of disclosure, any equivalent or equivalent deformation or replacement of the technical solutions of the present invention belongs to the protection scope of the present invention.

Claims

1. A glass fiber reinforced plastic storage tank, comprising a tank body (1), characterized in that: It also comprises a circular tube (2), a circular tube (3) and a sealing member, wherein the circular tube (2) is connected to the top of the tank body (1), the top surface of the circular tube (2) is recessed with an annular groove (4), and the lower part of the circular tube (3) is sleeved and fixed outside the circular tube (2); the sealing member comprises a bearing plate (5), a clamping ring (6), a sealing ring (7) and a connecting rod (8), wherein the bearing plate (5) is arranged inside the circular tube (3), the bottom surface of the bearing plate (5) is fixed with a clamping ring (6), the sealing ring (7) is sleeved outside the clamping ring (6) through an annular groove (9) opened at the top, and the upper ends of the sealing rings (7) on both sides of the annular groove (9) are respectively connected to the clamping rings (6) At the upper ends of the inner and outer side surfaces of the support plate (5), there are air holes (10) arranged in an array on the support plate (5), each air hole (10) penetrating downwardly through the support plate (5) and the retaining ring (6), the support plate (5) contacts the upper end of the circular tube (2), and the sealing ring (7) extends into the annular groove (4) along with the retaining ring (6), a support cylinder (11) is fixed on the top surface of the support plate (5) and covers the plurality of air holes (10), the connecting rod (8) movably penetrates the top plate of the support cylinder (11), the lower end of the connecting rod (8) is connected to a piston plate (12) located in the support cylinder (11), and a connecting plate (13) threadedly connected to the circular tube (3) is provided on the upper outer sleeve of the connecting rod (8).

2. A glass fiber reinforced plastic storage tank according to claim 1, characterized in that: A sealing ring (14) is provided on the circumferential surface of the piston plate (12) and is in sliding contact with the inner side surface of the bearing cylinder (11); the lower end of the connecting rod (8) is rotatably connected to the piston plate (12); a limiting rod (15) is connected between the inner top surface of the bearing cylinder (11) and the bearing plate (5); and the limiting rod (15) passes through the piston plate (12).

3. A glass fiber reinforced plastic storage tank according to claim 2, characterized in that: The sealing ring (7) is a circular ring made of elastic rubber. When the piston plate (12) contacts the inner top surface of the bearing plate (5), the sealing ring (7) is in a natural state. The distance from the inner ring to the outer ring of the sealing ring (7) matches the distance from the inner ring to the outer ring of the annular groove (4). The annular groove (9) and the clamping ring (6) match each other.

4. A glass fiber reinforced plastic storage tank according to claim 3, characterized in that: The outer side surface of the annular groove (4) is provided with a plurality of annular arc grooves 1 (17) spaced from top to bottom, and the inner side surface is provided with a plurality of annular arc grooves 2 (18) spaced from top to bottom.

5. A glass fiber reinforced plastic storage tank according to claim 4, characterized in that: After the piston plate (12) drives the gas in the bearing cylinder (11) to enter the annular groove (9) through the air hole (10), the outer wall of the sealing ring (7) is embedded in each arc groove (17), and the inner wall of the sealing ring (7) is embedded in each arc groove (18).

6. A glass fiber reinforced plastic storage tank according to claim 1, characterized in that: A first thread (19) is provided on the inner wall of the second circular tube (3) on the upper side of the first circular tube (2), and a second thread (20) matching the first thread (19) is provided on the circumferential surface of the connecting plate (13).

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