CN203412884U - Sealing screw - Google Patents

Abstract

The utility model discloses a sealing screw. The sealing screw is characterized by comprising a main body, wherein the main body is a hexagonal prism; a screw sealing structure is arranged at one end or each of the two ends of the main body; the screw sealing structure comprises a thread structure on the end part; the thread structure is connected with the main body by a thin neck; one side of the thread structure, which is close to the main body, is provided with a circular platform; one side with larger area of the circular platform is close to the main body. According to the sealing screw, the sealing part and the main body part are molded integrally; when the sealing screw is mounted, the operation is simple and convenient; after the sealing screw is completely arranged in a screw hole, and a sealing taper angle face and a screw hole taper angle face are tightly fitted, the main body part are twisted off.

Description

A kind of sealing screw

Technical field

The utility model relates to a kind of sealing screw, belongs to hydraulic pressure series products technical field.

Background technique

Hydraulic pressure class component, can be according to different requirements in course of working, and inside parts will be processed oil channel hole, and many ends will seal, and this just requires there is excellent obturator, prevents from occurring in the course of the work leakage of oil situation.

In the design of hydraulic pressure series products, Sealing is a kind of important element, and the quality of Sealing directly has influence on sealing and the Economy of hydraulic product.Existing Sealing generally adopts screw plug to seal, and as shown in Figure 1-2, screw plug 1 is cylindrical body to traditional screw plug structure, and the outside of screw plug 1 is provided with the screw thread matching with sealing place screw, is provided with hexagon ring 2 in screw plug 1.There is the deficiency of following several respects in the structure of tradition screw plug:

1. in assembly process, do not have main body auxiliary, by interior hexagonal rotation assembling, be difficult for tightening; And deep mixed the causing being threaded into, affects attractive in appearance;

2. 1 one-tenth one cone of whole screw plug, the screw thread by screw plug 1 coordinates and seals with screw, and sealability is not fine, and plug screw packs in hexagon ring 2 and can not well fix;

3. conventional screw plug 1 wants combination seal glue to use, and for disposable, easily pollutes.

Above structure has just caused sealing place of existing hydraulic product often to there will be leakage of oil situation, has a strong impact on the use of product.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of novel sealing structure, can replace traditional screw plug, makes up the defect of its sealing deficiency.

In order to address the above problem, the technical solution of the utility model is to provide a kind of sealing screw, it is characterized in that, comprise main body, main body is six prisms, the one or both ends of main body are provided with screw nail sealing structure, and described screw nail sealing structure comprises the worm structure of end, and worm structure is connected with main body by thin neck; Worm structure is provided with round platform near a side of main body, and the larger side of round platform basal area is near main body.

Preferably, the angle between described frustum cone side and bottom surface is 30 °, 40 ° or 60 °.

Preferably, described worm structure matches with M6, M8 or M10 screw.

In the utility model, sealing screw hermetic unit and main body are formed in one, simple to operation during installation, and screw to be sealed packs in screw completely, after sealing cone angle face and screw cone angle face fit tightly, main body are twisted into two parts.

Compared with prior art, the utility model has the advantage of:

1. this use novel overall is simple in structure, easily processing, and the two ends of a main body can process two screws, have greatly improved manufacturing efficiency and utilization efficiency; Cost is low and easy to assembly;

2. according to the size in concrete aperture, adjust the thread size of sealing screw, the best is applicable to the screw thread of M6, M8 and M10;

While 3. using this sealing screw assembling, reject rate is low, and working efficiency is high;

4. this sealing screw has increased sealing cone angle face, by screw thread and sealing cone angle double seal, contact compacter, better tightness.Common sealing angle of taper is 60 °, 40 ° and 30 °;

5. assembly process does not need to use sealer, saves cost, reduces system oil contamination.

Accompanying drawing explanation

Fig. 1 is the sectional view of traditional screw plug;

Fig. 2 is the plan view of traditional screw plug;

The structural representation of the sealing screw that Fig. 3 provides for embodiment;

Fig. 4 is the plan view of Fig. 3;

Fig. 5 is the schematic diagram after the utility model assembling.

Embodiment

For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.

Embodiment

As shown in Figure 3-4, the structural representation of the sealing screw providing for the present embodiment, comprises main body 3, and main body 3 is six prisms, and the two ends of main body 3 are respectively equipped with screw nail sealing structure.Described screw nail sealing structure comprises the worm structure 4 of end, and worm structure 4 is connected with main body 3 by thin neck 5; Worm structure 4 is provided with round platform 6 near a side of main body 3, and the larger side of round platform 6 basal areas is near main body 3.Angle between round platform 6 sides and bottom surface is 40 °.Worm structure 4 can match with M6, M8 or M10 screw according to need of production.

During above-mentioned sealing screw assembling, by main body 3 is auxiliary, assemble, at cone angle face 8 matching with round platform 6 of the end of screw 7 short; Treat whole sealing screw all to screw in screw 7, when round platform 6 and the cone angle face 8 of setting up fitted completely, twist into two parts main body 3.Whole sealing screw is simple in structure, easily processing.

Air tightness test: the pump cover of fitting tight screw is installed on plunger pump, plunger pump inner chamber is full of to the clean gas that pressure is 0.16MPa, is then immersed in antirust solution, more than stopping 1min, and shake a little, observe in liquid and have or not Bubble formation.Test result is without Bubble formation.

Claims (3)

1. a sealing screw, it is characterized in that, comprise main body (3), main body (3) is six prisms, the one or both ends of main body (3) are provided with screw nail sealing structure, described screw nail sealing structure comprises the worm structure (4) of end, and worm structure (4) is connected with main body (3) by thin neck (5); Worm structure (4) is provided with round platform (6) near a side of main body (3), and the larger side of round platform (6) basal area is near main body (3).

2. a kind of sealing screw as claimed in claim 1, is characterized in that, the angle (α) between described round platform (6) side and bottom surface is 30 °, 40 ° or 60 °.

3. a kind of sealing screw as claimed in claim 1, is characterized in that, described worm structure (4) matches with M6, M8 or M10 screw.

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