CN215762755U

CN215762755U - Bolt rust-proof protective sleeve

Info

Publication number: CN215762755U
Application number: CN202121076976.9U
Authority: CN
Inventors: 左文; 晏仁斌; 常娜
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2022-02-08
Anticipated expiration: 2031-05-19

Abstract

A bolt antirust protective sleeve comprises a threaded sleeve, wherein a drying agent box is detachably arranged at the top of the threaded sleeve, a top cover is detachably arranged at the top of the drying agent box, and drying agents are filled in the drying agent box; the threaded sleeve comprises a nut protection cavity, and the nut protection cavity is communicated with the screw rod protection hole; the bottom of the drying agent box is provided with a gas permeable hole plate which is communicated with the screw rod protection hole. The protective sleeve adopts the matching of internal threads and bolts, can be disassembled and recycled, and can be repeatedly used; the protective sheath is isolated with bolt and external environment, and inside packing drier, can keep inside dry well, ensures that the bolt is difficult for the corrosion.

Description

Bolt rust-proof protective sleeve

Technical Field

The utility model belongs to the field of bolt protection devices, and particularly relates to an antirust protective sleeve for a bolt.

Background

In industrial production, many bolts are in a dark and humid environment, and severe corrosion on the surfaces of the bolts is common. It is also common that the bolt is loosened and broken due to corrosion of the bolt, and thus serious production accidents may occur. Therefore, the bolts at important parts need to be subjected to rust prevention treatment, the common rust prevention measure is paint spraying, but the bolts are not easy to detach after the paint spraying, and the bolts are not easy to maintain in a later period.

SUMMERY OF THE UTILITY MODEL

In view of the technical problems in the background art, the bolt antirust protective sleeve provided by the utility model adopts the matching of the internal thread and the bolt, can be disassembled and recycled, and can be repeatedly used; the protective sheath is isolated with bolt and external environment, and inside packing drier, can keep inside dry well, ensures that the bolt is difficult for the corrosion.

In order to solve the technical problems, the utility model adopts the following technical scheme to realize:

a bolt antirust protective sleeve comprises a threaded sleeve, wherein a drying agent box is detachably arranged at the top of the threaded sleeve, a top cover is detachably arranged at the top of the drying agent box, and drying agents are filled in the drying agent box; the threaded sleeve comprises a nut protection cavity, and the nut protection cavity is communicated with the screw rod protection hole; the bottom of the drying agent box is provided with a gas permeable hole plate which is communicated with the screw rod protection hole.

In a preferred scheme, the bottom of the nut protection cavity is of an open structure, and the bottom edge of the nut protection cavity is detachably provided with a concave seal.

In the preferred scheme, the concave seal is of an annular structure, an annular groove is arranged at the top of the concave seal, and the annular groove is in plug-in fit with the bottom edge of the nut protection cavity.

In a preferable scheme, the threaded sleeve is in threaded connection with the drying agent box, and a second flat sealing gasket is arranged between the threaded sleeve and the drying agent box.

In a preferable scheme, the drying agent box is in threaded connection with the top cover, and a first flat sealing gasket is arranged between the drying agent box and the top cover

In the preferred scheme, the thread bush further comprises a top cavity, the top cavity is communicated with the screw rod protection hole, and the air vent plate is arranged above the top cavity.

In a preferred scheme, the threaded sleeve, the drying agent box and the top cover are made of nylon or polyurethane.

This patent can reach following beneficial effect:

1. the protective sheath adopts internal thread and bolt cooperation, can dismantle the recovery, repeatedly usable.

2. The protective sheath is isolated with bolt and external environment, and inside packing drier, can keep inside dry well, ensures that the bolt is difficult for the corrosion.

3. The upper part of the protective sleeve is provided with a rotary cover which can be manually unscrewed, the drying agent can be replaced regularly, and the bolt protection period is long.

4. This protective sheath adopts non-metallic material preparation such as nylon, polyurethane that hardness is high, intensity is big to form, and protective sheath itself can not the corrosion, and protective sheath live time is long.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a cross-sectional view of the present invention;

fig. 2 is a diagram illustrating the effect of the present invention.

In the figure: the drying agent box comprises a threaded sleeve 1, a nut protection cavity 101, a screw rod protection hole 102, a top cavity 103, a drying agent box 2, an air vent plate 201, a top cover 3, a first flat sealing gasket 4, a second flat sealing gasket 5, a concave sealing 6, a protected nut 7 and a protected screw rod 8.

Detailed Description

A preferable scheme is as shown in fig. 1, the bolt antirust protective sleeve comprises a threaded sleeve 1, a drying agent box 2 is detachably arranged at the top of the threaded sleeve 1, a top cover 3 is detachably arranged at the top of the drying agent box 2, and a drying agent is filled in the drying agent box 2; the threaded sleeve 1 comprises a nut protection cavity 101, and the nut protection cavity 101 is communicated with a screw rod protection hole 102; the bottom of the drying agent box 2 is provided with a vent plate 201, and the vent plate 201 is communicated with the screw rod protection hole 102.

As shown in fig. 2, the nut protection cavity 101 is used for covering the protected nut 7, the vent plate 201 is used for sleeving the protected screw 8, the desiccant box 2 is used for containing desiccant, and the desiccant is used for removing moisture in air and preventing a bolt from rusting. When the device is installed, the threaded sleeve 1 is rotatably installed from the top of the protected screw 8.

Further, the bottom of the nut protection cavity 101 is of an open structure, and the bottom edge of the nut protection cavity 101 is detachably provided with a concave seal 6. The concave seal 6 is made of an elastic material and is used for sealing the basic surface of the equipment.

Further, the concave seal 6 is of an annular structure, an annular groove is formed in the top of the concave seal 6, and the annular groove is in plug-in fit with the bottom edge of the nut protection cavity 101. The concave seal 6 can be made of rubber and has a certain deformation amount, and the width of the annular groove is slightly smaller than the thickness of the outer wall of the nut protection cavity 101.

Further, as shown in fig. 1, a threaded sleeve 1 is threadedly connected with the drying agent box 2, and a second flat gasket 5 is provided between the threaded sleeve 1 and the drying agent box 2. The drying agent box 2 is in threaded connection with the top cover 3, and a first flat sealing gasket 4 is arranged between the drying agent box 2 and the top cover 3.

Further, the thread bushing 1 further comprises a top cavity 103, the top cavity 103 is communicated with the screw rod protection hole 102, and a vent plate 201 is arranged above the top cavity 103. The top cavity 103 provides a redundant space because the length of each exposed by the protective screw 8 is not exactly equal.

Further, the threaded sleeve 1, the drying agent box 2 and the top cover 3 are made of nylon or polyurethane.

The working principle is as follows:

the utility model designs a bolt protective sleeve which is arranged on the surface of a bolt and used for isolating the bolt from the external environment. And a drying agent is filled in the protective sleeve, so that the environment in the protective sleeve is kept dry, the bolt is in a dry environment, and the bolt is ensured not to be easily rusted. The thread sleeve is made of non-metal materials with high hardness and high strength, such as nylon, polyurethane and the like, and the concave rubber seal (namely, concave seal) is arranged on the lower end surface of the thread sleeve. The interior of the thread bush is an internal thread which is matched with the exposed thread (namely, the protected screw 8) of the bolt. The protective sleeve is installed on the bolt by utilizing exposed threads of the bolt.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. The utility model provides an antirust protective sleeve for bolt which characterized in that: the drying machine comprises a threaded sleeve (1), wherein a drying agent box (2) is detachably arranged at the top of the threaded sleeve (1), a top cover (3) is detachably arranged at the top of the drying agent box (2), and a drying agent is filled in the drying agent box (2); the threaded sleeve (1) comprises a nut protection cavity (101), and the nut protection cavity (101) is communicated with the screw rod protection hole (102); the bottom of the drying agent box (2) is provided with an air vent plate (201), and the air vent plate (201) is communicated with the screw rod protection hole (102).

2. The rust inhibitive protective sleeve for bolts according to claim 1, characterized in that: the bottom of the nut protection cavity (101) is of an open structure, and the bottom edge of the nut protection cavity (101) is detachably provided with a concave seal (6).

3. The rust inhibitive protective sleeve for bolts according to claim 2, characterized in that: the concave seal (6) is of an annular structure, an annular groove is formed in the top of the concave seal (6), and the annular groove is in inserting fit with the bottom edge of the nut protection cavity (101).

4. The rust inhibitive protective sleeve for bolts according to claim 1, characterized in that: the threaded sleeve (1) is in threaded connection with the drying agent box (2), and a second flat sealing gasket (5) is arranged between the threaded sleeve (1) and the drying agent box (2).

5. The rust inhibitive protective sleeve for bolts according to claim 1, characterized in that: the drying agent box (2) is in threaded connection with the top cover (3), and a first flat sealing gasket (4) is arranged between the drying agent box (2) and the top cover (3).

6. The rust inhibitive protective sleeve for bolts according to claim 1, characterized in that: the thread bushing (1) further comprises a top cavity (103), the top cavity (103) is communicated with the screw rod protection hole (102), and a gas permeable hole plate (201) is arranged above the top cavity (103).

7. The rust inhibitive protective sleeve for bolts according to claim 1, characterized in that: the threaded sleeve (1), the drying agent box (2) and the top cover (3) are made of nylon or polyurethane.