Hexagonal nut for water gate

Abstract

The invention discloses a hexagonal nut for a water gate, comprising a nut body, a threaded hole, a sealing end, a locking spring, a tilting top block, a shrinking clamping block, a sealing closing groove and a rubber sealing ring. The invention can fully protect the threaded connection part of the hexagonal nut, effectively prevent the threaded connection part from rusting and loosening due to water vapor erosion, and improve the stability and safety of the nut connection.

Description

[Technical field]

[0001] The invention relates to the technical field of nuts, in particular to the technical field of hexagonal nuts for water gates. [Background technology]

[0002] Nuts are nuts, parts that are screwed together with bolts or screws for fastening. They are a must-have component for all manufacturing machinery. According to different materials, they are divided into several types, such as carbon steel, stainless steel, and non-ferrous metals (such as copper). Sluice gates are important control equipment in nuclear power and water conservancy projects. The nuts used in sluice gates are ordinary nuts. After the sluice gates have been working for a long time, the nuts are prone to rust and loosen, and even fall off from the bolts, causing safety accidents. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose a hexagonal nut for a sluice gate, which can fully protect the threaded connection parts of the hexagonal nut, effectively prevent the threaded connection parts from rusting and loosening due to water vapor erosion, and improve the stability and safety of the nut connection.

[0004] To achieve the above-mentioned purpose, the present invention proposes a hexagonal nut for a sluice gate, comprising a nut body, a threaded hole, a sealing end, a locking spring, a raised top block, a shrinking block, a sealing closing groove and a rubber sealing ring, wherein a threaded hole is axially arranged in the nut body, a sealing end is arranged at the top of the threaded hole, the sealing end and the nut body are an integrated structure, a sealing cavity is arranged inside the sealing end, a locking spring is installed in the sealing cavity, a raised top block is arranged in the middle of the locking spring, shrinking blocks are symmetrically arranged on both sides of the locking spring, a sealing closing groove is arranged at the bottom of the threaded hole, a plurality of rubber sealing rings are clamped in the sealing closing groove, and the inner diameter of the rubber sealing ring is smaller than the diameter of the threaded hole.

[0005] Preferably, the raised top block is a protruding flat-bottomed circular block, and the initial spacing of the shrinking blocks is greater than the diameter of the threaded hole.

[0006] Preferably, the shrink block is in a semicircular arc shape, and the diameter of the shrink block is the same as the diameter of the threaded hole.

[0007] Preferably, a wear-resistant rubber layer is adhered to the inner side of the shrink block.

[0008] Preferably, the number of the rubber sealing rings is at least three, and the rubber sealing rings are evenly distributed in parallel in the sealing groove, and a partition sealing cavity is formed between adjacent rubber sealing rings. An oil filling channel connected to the partition sealing cavity is provided on the side of the nut body, and a sealing oil plug is provided at the end of the oil filling channel.

[0009] Preferably, a sealing groove is provided on the inner side ring of the rubber sealing ring.

[0010] Preferably, a flange is provided at the bottom of the nut body, and a plurality of welding protrusions are evenly and radially provided at the bottom of the flange.

[0011] Beneficial effects of the invention: The invention combines the nut body, threaded hole, sealing end, locking spring, tilting top block, shrinking block, sealing closing groove and rubber sealing ring together, and after experimental optimization, can fully protect the threaded connection parts of the hexagonal nut, effectively prevent rust and loosening of the threaded connection parts caused by water vapor erosion, and improve the stability and safety of the nut connection.

[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0013] Figure 1 It is a structural schematic diagram of a hexagonal nut for a sluice gate of the present invention;

[0014] Figure 2 The utility model is a schematic diagram of the structure of a locking spring of a hexagonal nut for a water gate in a bottom view according to the present invention.

[0015] In the figure: 1-nut body, 2-threaded hole, 3-sealing end, 4-locking spring, 5-lifting top block, 6-contraction block, 7-sealing closing groove, 8-rubber sealing ring, 9-wear-resistant rubber layer, 10-oil filling channel, 11-sealing oil plug, 12-sealing groove, 13-flange, 14-welding protrusion, 15-sealing cavity. [Specific implementation method]

[0016] See also Figure 1 and Figure 2The present invention discloses a hexagonal nut for a water gate, comprising a nut body 1, a threaded hole 2, a sealing end 3, a locking spring 4, a tilting top block 5, a shrinking block 6, a sealing closing groove 7 and a rubber sealing ring 8. A threaded hole 2 is axially arranged in the nut body 1, a sealing end 3 is arranged on the top of the threaded hole 2, the sealing end 3 and the nut body 1 are an integrated structure, a sealing cavity 15 is arranged inside the sealing end 3, a locking spring 4 is installed in the sealing cavity 15, a tilting top block 5 is arranged in the middle of the locking spring 4, shrinking blocks 6 are symmetrically arranged on both sides of the locking spring 4, a sealing closing groove 7 is arranged at the bottom of the threaded hole 2, a plurality of rubber sealing rings 8 are clamped in the sealing closing groove 7, the inner diameter of the rubber sealing ring 8 is smaller than the diameter of the threaded hole 2, the tilting top block 5 is A protruding flat-bottomed circular block, the initial spacing of the shrinking block 6 is greater than the diameter of the threaded hole 2, the shape of the shrinking block 6 is a semicircular arc, the diameter of the shrinking block 6 is the same as the diameter of the threaded hole 2, a wear-resistant rubber layer 9 is adhered to the inner side of the shrinking block 6, the number of the rubber sealing rings 8 is at least three, the rubber sealing rings 8 are evenly and parallelly distributed in the sealing groove 7, and a partition sealing cavity 15 is formed between adjacent rubber sealing rings, an oil injection channel 10 connected to the partition sealing cavity 15 is provided on the side of the nut body 1, a sealing oil plug 11 is provided at the end of the oil injection channel 10, a sealing groove 12 is provided on the inner side of the rubber sealing ring 8, a flange 13 is provided at the bottom of the nut body 1, and a plurality of welding protrusions 14 are evenly and radially provided at the bottom of the flange 13.

[0017] The present invention combines a nut body 1, a threaded hole 2, a sealing end 3, a locking spring 4, a tilting top block 5, a shrinking block 6, a sealing closing groove 7 and a rubber sealing ring 8 together, and after experimental optimization, can fully protect the threaded connection part of the hexagonal nut, effectively prevent the threaded connection part from rusting and loosening due to water vapor erosion, and improve the stability and safety of the nut connection.

[0018] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A hexagonal nut for a sluice gate, characterized in that: The invention comprises a nut body (1), a threaded hole (2), a sealing end head (3), a locking spring (4), a tilting top block (5), a shrinking block (6), a sealing closing groove (7) and a rubber sealing ring (8), wherein a threaded hole (2) is axially arranged in the nut body (1), a sealing end head (3) is arranged at the top of the threaded hole (2), the sealing end head (3) and the nut body (1) are an integrated structure, a sealing cavity (15) is arranged inside the sealing end head (3), a locking spring (4) is installed in the sealing cavity (15), a tilting top block (5) is arranged in the middle of the locking spring (4), shrinking blocks (6) are symmetrically arranged on both sides of the locking spring (4), a sealing closing groove (7) is arranged at the bottom of the threaded hole (2), and a plurality of rubber sealing rings are clamped in the sealing closing groove (7). (8), the inner diameter of the rubber sealing ring (8) is smaller than the diameter of the threaded hole (2), the raised top block (5) is a protruding flat-bottomed circular block, the initial spacing of the shrinking block (6) is larger than the diameter of the threaded hole (2), the shrinking block (6) is in the shape of a semicircular arc, the diameter of the shrinking block (6) is the same as the diameter of the threaded hole (2), a wear-resistant rubber layer (9) is adhered to the inner side surface of the shrinking block (6), the number of the rubber sealing rings (8) is at least three, the rubber sealing rings (8) are evenly and parallelly distributed in the sealing groove (7), and a partition sealing cavity (15) is formed between adjacent rubber sealing rings, and an oil injection channel (10) connected to the partition sealing cavity (15) is provided on the side of the nut body (1), and a sealing oil plug (11) is provided at the end of the oil injection channel (10).

2. A hexagonal nut for a sluice gate as claimed in claim 1, characterized in that: The inner side surface of the rubber sealing ring (8) is provided with a sealing groove (12).

3. A hexagonal nut for a sluice gate as claimed in claim 1, characterized in that: A flange (13) is arranged at the bottom of the nut body (1), and a plurality of welding protrusions (14) are evenly and radially arranged at the bottom of the flange (13).

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