Storage tank breather valve with good sealing performance

Abstract

The utility model provides a storage tank breather valve with good sealing performance, and relates to the technical field of breather valve equipment, the storage tank breather valve comprises a storage tank breather valve body and a storage tank interface, one end of the storage tank breather valve body and one end of the storage tank interface are respectively and fixedly connected with an upper butt-joint disc and a lower butt-joint disc, a fixing outer ring is fixedly connected to the surface of the upper butt-joint disc, a lead screw and a rail rod are fixedly connected to the surface of one side of the fixing outer ring, and after the extrusion plate is assembled at the storage tank connector and butt joint of the upper butt-joint disc and the lower butt-joint disc is completed, the extrusion plate is moved upwards to penetrate through the lead screw and the rail rod; and a nut is rotationally mounted below the upper butt-joint disc, so that the extrusion plate stably and horizontally moves upwards to uniformly extrude the lower butt-joint disc, and the condition of poor sealing performance caused by non-uniform stress on the sealing surfaces of the upper butt-joint disc and the lower butt-joint disc is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of breathing valve equipment, in particular to a storage tank breathing valve with good sealing performance. Background Art

[0002] The tank breathing valve mainly meets the ventilation requirements of different sizes of tanks and is installed on the top of tanks storing Class A, B and C liquids in conjunction with flame arresters. The tank breathing valve is an important accessory to protect the safety of oil tanks. It is installed on the top plate of the oil tank and consists of two parts: a pressure valve and a vacuum valve. Under normal circumstances, its function is to maintain the airtightness of the oil tank and reduce the evaporation loss of oil products to a certain extent.

[0003] However, in the prior art, most of the existing tank breathing valves are connected to the tank with the help of flanges and bolts, and there are multiple bolts on the flange, which need to be installed one by one. However, since they are installed step by step, the tightening force of the bolts may be uneven, resulting in an unbalanced sealing surface, thereby causing a poor sealing problem. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art: since the bolts are installed step by step, uneven tightening force of the bolts may occur, resulting in an unbalanced sealing surface, thereby causing a problem of poor sealing.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a storage tank breathing valve with good sealing performance, comprising a storage tank breathing valve body and a storage tank interface, wherein one end of the storage tank breathing valve body and the storage tank interface are respectively fixedly connected with an upper docking plate and a lower docking plate, and a fixed outer ring is fixedly connected to the surface of the upper docking plate, and a screw rod and a track rod are respectively fixedly connected to the surface of one side of the fixed outer ring, an extrusion plate is slidably penetrated on the surface of the screw rod, and a plurality of extrusion plates are provided, an interlaced block is fixedly connected to the surface of the extrusion plate, and the interlaced block is clamped and connected to the surface of the extrusion plate opposite to it, the track rod is connected through the extrusion plate and the interlaced block, and a nut is threadedly connected on the surface of the screw rod.

[0006] As a preferred implementation, a sealing cushion is fixedly connected to the inner surface of the fixed outer ring.

[0007] As a preferred embodiment, the size of the inner circle after the extrusion plates are combined is adapted to the size of the tank interface.

[0008] As a preferred implementation, a slide rail block is fixedly connected to the lower surface of the extrusion plate, and a movable stopper is slidably connected to the surface of the slide rail block.

[0009] As a preferred implementation, a clamping block is fixedly connected to one side surface of the slide rail block, and the clamping block is interlaced and engaged with the movable limiting member.

[0010] Compared with the prior art, the advantages and positive effects of the utility model are:

[0011] According to the utility model, after the extrusion plate is assembled at the interface of the storage tank, the upper docking plate and the lower docking plate are docked by arranging a fixed outer ring sleeve on the lower docking plate, and then the extrusion plate is moved up to pass through the screw rod and the track rod, and the nut is rotated and installed on the screw rod below the extrusion plate, so that the extrusion plate can be stably moved up horizontally with the help of the screw rod and the track rod, and then the lower docking plate is evenly squeezed, so that the sealing surfaces of the upper docking plate and the lower docking plate are evenly and balancedly stressed, and the poor sealing is effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of a storage tank breathing valve with good sealing performance provided by the utility model;

[0013] Figure 2 A schematic diagram of the structure of a tank breathing valve with good sealing provided by the utility model, viewed from above at the tank breathing valve body;

[0014] Figure 3 A schematic diagram of the structure around the extrusion plate of a storage tank breathing valve with good sealing performance provided by the utility model;

[0015] Figure 4 The utility model provides a storage tank breathing valve with good sealing performance Figure 3 Enlarged view of point A in the middle.

[0016] Legend:

[0017] 1. Storage tank breathing valve body; 2. Storage tank interface; 3. Upper docking plate; 4. Lower docking plate; 5. Fixed outer ring; 6. Screw rod; 7. Track rod; 8. Sealing cushion; 9. Extrusion plate; 10. Insert block; 11. Slide block; 12. Movable limiter; 13. Block; 14. Nut. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] like Figure 1-4 As shown, the utility model provides a technical solution: a storage tank breathing valve with good sealing performance, including a storage tank breathing valve body 1 and a storage tank interface 2, the storage tank breathing valve body 1 and one end of the storage tank interface 2 are respectively fixedly connected with an upper docking plate 3 and a lower docking plate 4, and a fixed outer ring 5 is fixedly connected to the surface of the upper docking plate 3, with the help of the fixed outer ring 5, it is convenient to make the upper docking plate 3 and the lower docking plate 4 dock more accurately up and down, and a screw rod 6 and a track rod 7 are respectively fixedly connected to the surface of one side of the fixed outer ring 5, with the help of the screw rod 6 and the track rod 7, it is convenient for the combined extrusion plate 9 to move stably up and down horizontally, and the surface of the screw rod 6 An extrusion plate 9 is slidably penetrated on the surface, and there are multiple extrusion plates 9. An insertion block 10 is fixedly connected to the surface of the extrusion plate 9, and the insertion block 10 is snap-connected to the surface of the extrusion plate 9 opposite to it. With the help of the insertion block 10, it is convenient to stably connect and combine the two extrusion plates 9. The track rod 7 is penetrated and connected with the extrusion plate 9 and the insertion block 10. A nut 14 is threadedly connected to the surface of the screw rod 6. By rotating the nut 14 on the screw rod 6 under the extrusion plate 9, the extrusion plate 9 can be stably moved upward horizontally and the lower docking plate 4 can be evenly squeezed, effectively avoiding the situation where the sealing surfaces of the upper docking plate 3 and the lower docking plate 4 are subjected to uneven force and cause poor sealing.

[0021] Example 2

[0022] like Figure 1-4 As shown, a sealing gasket 8 is fixedly connected to the inner surface of the fixed outer ring 5, and the sealing gasket 8 is closely attached to the gap between the upper docking plate 3 and the lower docking plate 4 to further improve the overall sealing of the device. The size of the inner ring after the combination between the extrusion plates 9 is adapted to the size of the tank interface 2, so that the combined extrusion plates 9 can be standardized to perform up and down linear movement and left and right rotation adjustment, which is convenient for the subsequent docking work between the extrusion plates 9 and the screw rod 6 and the track rod 7. A slide block 11 is fixedly connected to the lower surface of the extrusion plate 9, and a movable limiter 12 is slidably connected to the surface of the slide block 11. After the nut 14 is rotated and installed, the movable limiter 12 on the slide block 11 is pushed to one side, so that the movable limiter 12 limits the movement of the nut 14, thereby reducing the accidental loosening of the nut 14. A clamping block 13 is fixedly connected to the surface of one side of the slide block 11, and the clamping block 13 is interlaced and engaged with the movable limiter 12, and the clamping block 13 plays a role in improving the stability of the movable limiter 12 after movement.

[0023] Working principle:

[0024] like Figure 1-4After that, the user can manually push the extrusion plate 9 upward to make the screw rod 6 pass through the extrusion plate 9 and the track rod 7 pass through the extrusion plate 9 and the insertion block 10. After that, the nut 14 is rotated and installed on the screw rod 6 under the extrusion plate 9. The nut 14 is continuously rotated and moved upward, driving the extrusion plate 9 as a whole to stably move horizontally upward along the screw rod 6 and the track rod 7. Finally, the extrusion plate 9 evenly squeezes the lower docking plate 4, so that the sealing surfaces of the upper docking plate 3 and the lower docking plate 4 are evenly and balancedly stressed, effectively avoiding the occurrence of poor sealing. After that, the movable limiter 12 on the slide rail block 11 is moved to one side and engaged with the card block 13 to limit the movement of the nut 14.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A tank breathing valve with good sealing performance, comprising a tank breathing valve body (1) and a tank interface (2), characterized in that: The storage tank breathing valve body (1) and one end of the storage tank interface (2) are respectively fixedly connected to an upper docking plate (3) and a lower docking plate (4), and a fixed outer ring (5) is fixedly connected to the surface of the upper docking plate (3), and a screw rod (6) and a track rod (7) are respectively fixedly connected to the surface of one side of the fixed outer ring (5), and an extrusion plate (9) is slidably penetrated through the surface of the screw rod (6), and the extrusion plate (9) is provided with a plurality of them, and an interpenetrating block (10) is fixedly connected to the surface of the extrusion plate (9), and the interpenetrating block (10) is snap-connected with the surface of the extrusion plate (9) opposite to it, and the track rod (7) is connected through the extrusion plate (9) and the interpenetrating block (10), and a nut (14) is threadedly connected to the surface of the screw rod (6).

2. A tank breathing valve with good sealing performance according to claim 1, characterized in that: A sealing cushion (8) is fixedly connected to the inner surface of the fixed outer ring (5).

3. The tank breathing valve with good sealing performance according to claim 1 is characterized in that: The size of the inner circle after the extrusion plates (9) are combined is adapted to the size of the storage tank interface (2).

4. The tank breathing valve with good sealing performance according to claim 1 is characterized in that: The lower surface of the extrusion plate (9) is fixedly connected to a slide rail block (11), and a movable stopper (12) is slidably connected to the surface of the slide rail block (11).

5. A tank breathing valve with good sealing performance according to claim 4, characterized in that: A clamping block (13) is fixedly connected to one side surface of the slide rail block (11), and the clamping block (13) is interlaced and clamped with the movable stopper (12).

Images