Corrosion-resistant nut for crushing equipment

Abstract

The corrosion-resistant nut for the smashing equipment comprises a nut body, a fixing cylinder, a protective cover and an elastic sealing ring, a threaded hole is formed in the nut body, the fixing cylinder is fixed to the upper end of the nut body and is a cylinder body with the upper end and the lower end open, the outer portion of the fixing cylinder is cylindrical, and the protective cover is arranged on the outer portion of the fixing cylinder. A first external thread is arranged on the outer wall of the fixing cylinder, the fixing cylinder and the threaded hole are located on the same vertical central axis, the whole threaded hole is surrounded by the inner cylinder wall of the fixing cylinder, the protective cover is composed of a mounting cylinder, a connecting ring and a protective cylinder, and the mounting cylinder is a cylinder body with the upper end closed. According to the anti-corrosion nut, the nut body is covered with the protective cover, so that the nut body does not make contact with external substances, the nut body is not prone to corrosion, and the nut body has the good anti-corrosion effect.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to the technical field of corrosion-resistant nuts. Background Art

[0002] A nut is a nut that is screwed together with a bolt or a screw for fastening. It is a component that must be used in all manufacturing machinery. According to the different materials, it is divided into several types such as carbon steel, stainless steel, and non-ferrous metals. When the nut is used, it is usually directly threaded onto the outer wall of the screw or bolt. In order to improve the corrosion resistance of the nut, anti-rust paint is generally sprayed on the outside of the nut. However, when such an anti-rust nut crushing equipment is used inside, the nut will come into contact, friction, and collision with the particles produced by the crushing, and the anti-rust coating will be quickly worn, making the nut no longer corrosion-resistant. The nut is easily corroded. When the nut is severely corroded, the fastening effect of the nut will fail, which will cause damage to the equipment. Utility Model Content

[0003] The purpose of the utility model is to solve the problems in the prior art and to provide a corrosion-resistant nut for a crushing device, which can make the nut have good corrosion resistance.

[0004] To achieve the above-mentioned purpose, the utility model proposes a corrosion-resistant nut for crushing equipment, including a nut body, a fixing cylinder, a protective cover, and an elastic sealing ring. A threaded hole is provided on the nut body, and a fixing cylinder is fixed to the upper end of the nut body. The fixing cylinder is a cylinder with openings at both ends. The outside of the fixing cylinder is cylindrical, and a first external thread is provided on the outer wall of the fixing cylinder. The fixing cylinder and the threaded hole are located on the same vertical central axis, and the inner cylinder wall of the fixing cylinder surrounds the entire threaded hole. The protective cover consists of a mounting cylinder, a connecting ring, and a protective cylinder. The mounting cylinder is a cylinder with a closed upper end, and a first internal thread matching the first external thread is provided on the inner wall of the mounting cylinder. The mounting cylinder is screwed on the fixing cylinder, and a connecting ring is fixed to the bottom of the mounting cylinder, and a protective cylinder is fixed to the bottom of the connecting ring. The protective cylinder surrounds the nut body, and an elastic sealing ring is provided at the bottom of the protective cylinder.

[0005] Preferably, the interior of the fixing cylinder is a hexagonal hole.

[0006] Preferably, the height of the protective tube is greater than the height of the nut body.

[0007] Preferably, the outer wall of the protective tube is provided with a second external thread, a mounting ring is screwed on the outer wall of the protective tube, a second internal thread matching the second external thread is provided on the inner wall of the mounting ring, a protective tube is fixed to the bottom end of the mounting ring, and the protective tube surrounds the elastic sealing ring.

[0008] Preferably, a columnar installation box is screwed inside the installation tube, a third external thread matching the first internal thread is provided on the outer wall of the installation box, dry particles are placed inside the installation box, and a vent hole is provided on the bottom wall of the installation box.

[0009] The beneficial effects of the utility model are as follows: the utility model covers the nut body with a protective cover so that the nut body will not come into contact with external substances, making the nut body not easy to be corroded and having good corrosion resistance; the provision of the protective tube makes it difficult for the elastic sealing ring to come into contact with particles generated inside the crushing equipment, and the elastic sealing ring is not easy to be worn, thereby effectively ensuring the sealing effect of the elastic sealing ring.

[0010] 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

[0011] Figure 1 This is a front cross-sectional view of the first embodiment of the corrosion-resistant nut for crushing equipment of the utility model;

[0012] Figure 2 This is a front cross-sectional view of the second embodiment of the corrosion-resistant nut for crushing equipment of the utility model;

[0013] Figure 3 It is a top view of a cross-sectional view of a third embodiment of the utility model of a corrosion-resistant nut for a pulverizing device.

[0014] In the figure: 1-nut body, 2-protective cover, 3-elastic sealing ring, 10-threaded hole, 11-fixing cylinder, 21-installing cylinder, 22-connecting ring, 23-protective cylinder, 24-installing ring, 25-protective cylinder, 26-installing box. DETAILED DESCRIPTION

[0015] Embodiment 1:

[0016] See also Figure 1The utility model discloses a corrosion-resistant nut for crushing equipment, comprising a nut body 1, a fixing cylinder 11, a protective cover 2 and an elastic sealing ring 3. The nut body 1 is provided with a threaded hole 10. A fixing cylinder 11 is fixed to the upper end of the nut body 1. The fixing cylinder 11 is a cylinder with openings at both ends. The fixing cylinder 11 is cylindrical in shape. The outer wall of the fixing cylinder 11 is provided with a first external thread. The fixing cylinder 11 and the threaded hole 10 are located on the same vertical central axis. The inner cylinder wall of the fixing cylinder 11 surrounds the entire threaded hole 10. The protective cover 2 is composed of a mounting cylinder 21, a connecting ring 22 and a protective cylinder 23. The mounting cylinder 21 is a cylinder with a closed upper end. The inner wall of the mounting cylinder 21 is provided with a first internal thread matching the first external thread. The mounting cylinder 21 is screwed on the fixing cylinder 11. A connecting ring 22 is fixed to the bottom of the mounting cylinder 21. A protective cylinder 23 is fixed to the bottom of the connecting ring 22. The protective cylinder 23 surrounds the nut body 1. An elastic sealing ring 3 is provided at the bottom of the protective cylinder 23.

[0017] The interior of the fixing cylinder 11 is a hexagonal hole.

[0018] In order to ensure that the protection tube 23 will not be resisted by the nut body 1 , the height of the protection tube 23 is greater than the height of the nut body 1 .

[0019] Embodiment 2:

[0020] See also Figure 2 On the basis of the first embodiment, in order to avoid the wear of the elastic sealing ring 3, a second external thread is provided on the outer wall of the protective tube 23, a mounting ring 24 is screwed on the outer wall of the protective tube 23, and a second internal thread matching the second external thread is provided on the inner wall of the mounting ring 24. A protective tube 25 is fixed to the bottom end of the mounting ring 24, and the protective tube 25 surrounds the elastic sealing ring 3.

[0021] Embodiment three:

[0022] See also Figure 3 On the basis of Embodiment 1 or 2, in order to prevent the nut body 1 from being in a humid environment and improve the corrosion resistance of the nut body 1, a columnar installation box 26 is screwed inside the installation tube 21, and a third external thread matching the first internal thread is provided on the outer wall of the installation box 26. Dry particles are placed inside the installation box 26, and a vent hole is provided on the bottom wall of the installation box 26.

[0023] Working process of this utility model:

[0024] During the operation of the corrosion-resistant nut for the pulverizing equipment of the utility model, the nut body 1 is screwed onto the screw rod, and after the nut body 1 is tightened, the elastic sealing ring 3 is sleeved on the outside of the nut body 1, and then the installation box 26 is screwed on the inside of the protective cover 2, and then the protective cover 2 is screwed on the fixed cylinder 11 until the protective cover 2 compresses the elastic sealing ring 3, and then the combination of the installation ring 24 and the protective cylinder 25 is screwed on the protective cylinder 23, and the protective cylinder 23 surrounds the elastic sealing ring 3 to prevent it from rubbing and colliding with the debris generated during the operation of the pulverizing equipment, and the elastic sealing ring 3 is not easy to be worn. At this time, the nut body 1 is in a relatively independent environment, it is not easy to come into contact with external substances, the nut body 1 is not easy to be corroded, and the connection reliability of the nut body 1 can be effectively guaranteed.

[0025] 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 falls within the protection scope of the present invention.

Claims

1. Corrosion-resistant nuts for crushing equipment, characterized by: The invention comprises a nut body (1), a fixing cylinder (11), a protective cover (2), and an elastic sealing ring (3). The nut body (1) is provided with a threaded hole (10). A fixing cylinder (11) is fixed to the upper end of the nut body (1). The fixing cylinder (11) is a cylinder with openings at both ends. The fixing cylinder (11) is cylindrical in shape. A first external thread is provided on the outer wall of the fixing cylinder (11). The fixing cylinder (11) and the threaded hole (10) are located on the same vertical central axis. The inner cylinder wall of the fixing cylinder (11) surrounds the entire threaded hole (10). The protective cover (2) is composed of a mounting tube (21), a connecting ring (22), and a protective tube (23). The mounting tube (21) is a cylindrical body with a sealed upper end. A first internal thread matching a first external thread is provided on the inner wall of the mounting tube (21). The mounting tube (21) is screwed onto the fixing tube (11). A connecting ring (22) is fixed at the bottom of the mounting tube (21). A protective tube (23) is fixed at the bottom end of the connecting ring (22). The protective tube (23) surrounds the nut body (1). An elastic sealing ring (3) is provided at the bottom of the protective tube (23).

2. The corrosion-resistant nut for crushing equipment according to claim 1, characterized in that: The interior of the fixing cylinder (11) is a hexagonal hole.

3. The corrosion-resistant nut for a pulverizing device according to claim 1, characterized in that: The height of the protection tube (23) is greater than the height of the nut body (1).

4. The corrosion-resistant nut for a pulverizing device according to claim 1, characterized in that: The outer wall of the protection tube (23) is provided with a second external thread, a mounting ring (24) is screwed onto the outer wall of the protection tube (23), a second internal thread matching the second external thread is provided on the inner wall of the mounting ring (24), a protection tube (25) is fixed at the bottom end of the mounting ring (24), and the protection tube (25) surrounds the elastic sealing ring (3).

5. The corrosion-resistant nut for a pulverizing device according to any one of claims 1 to 4, characterized in that: A columnar installation box (26) is screwed into the installation cylinder (21), a third external thread matching the first internal thread is provided on the outer wall of the installation box (26), dry particles are placed inside the installation box (26), and a vent hole is provided on the bottom wall of the installation box (26).

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