CN215763271U

CN215763271U - Axial sealing device for ball screw

Info

Publication number: CN215763271U
Application number: CN202122306162.6U
Authority: CN
Inventors: 王伟刚; 杨兴旺
Original assignee: Suzhou Fischer Purification Technology Co ltd
Current assignee: Suzhou Fischer Purification Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-08
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses an axial sealing device for a ball screw, which comprises a box body and the ball screw arranged in the box body, wherein an inner lining plate is arranged on the side wall of the box body; a fixed seat for mounting the ball screw is arranged on the fixed plate, and the ball screw penetrates through the fixed seat, the fixed plate and the inner lining plate to the outside of the box body; the sealing device is characterized in that a sealing seat for sealing is arranged outside the box body, a rubber mat is arranged on the sealing seat, and the sealing seat and the rubber mat are arranged on the ball screw. The ball screw is installed in a sealing mode, so that when the ball screw is used in a biological safety gas filter, harmful gas is prevented from leaking, and the safety of a working environment is ensured.

Description

Axial sealing device for ball screw

Technical Field

The utility model relates to the field of biological safety, in particular to an axial sealing device for a ball screw.

Background

The ball screw is the most commonly used transmission element on tool machinery and precision machinery, and has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency.

In the biological safety field, ball is used in biological safety gas filter, because operational environment is more complicated, when guaranteeing ball in using gas filter, harmful gas can not leaked, consequently seals into the important problem for ball in use, and current ball sealing performance is general, influences gas filter's result of use easily, leads to harmful gas's leakage, has the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a ball screw axial sealing device with good sealing performance.

In order to achieve the purpose, the utility model provides the following technical scheme:

a ball screw axial sealing device comprises a box body and a ball screw arranged in the box body, wherein an inner lining plate is arranged on the side wall of the box body, and a fixing plate for sealing is arranged on the inner lining plate; a fixed seat for mounting the ball screw is arranged on the fixed plate, and the ball screw penetrates through the fixed seat, the fixed plate and the inner lining plate to the outside of the box body; the sealing device is characterized in that a sealing seat for sealing is arranged outside the box body, a rubber mat is arranged on the sealing seat, and the sealing seat and the rubber mat are arranged on the ball screw.

Preferably, be provided with the orientation on the lateral wall of box the annular of seal receptacle is protruding, the seal receptacle has been seted up and has been corresponded the annular recess that the annular is protruding, the seal receptacle with the box passes through annular protruding and annular groove connect, annular protruding extrudees into in the annular recess, be favorable to with the seal receptacle is fixed on the box, increases the stability of seal receptacle, plays further sealed effect.

Preferably, the position that the seal receptacle is close to the box still is provided with the seal groove of a plurality of annular, the inside of seal groove is provided with the sealing washer, can prevent that gas from following flow out and pollute service environment in the junction gap of box and seal receptacle.

Preferably, the seal receptacle is provided with a plurality of and is used for installing the recess of cushion, be provided with a plurality of on the cushion and correspond the arch of recess, through protruding on the cushion and the groove connection of seal receptacle, be favorable to installing the cushion on the seal receptacle to it is sealed to the seal receptacle.

Preferably, the centers of the fixed plate and the inner lining plate are both provided with openings, the openings are in the same axial direction, the diameter of the opening of the fixed plate is smaller than that of the opening of the inner lining plate, and the fixing seat is mounted on the opening of the fixed plate, so that the ball screw shaft can conveniently penetrate through the box body, and meanwhile, the axial direction of the ball screw shaft is sealed.

Preferably, both surfaces of the lining plate are provided with openings and are hollow.

The utility model has the beneficial effects that: the installation to ball adopts sealed mode, when using ball in biosafety gas filter, prevents harmful gas's leakage, guarantees operational environment's safety.

Drawings

FIG. 1 is a schematic structural view of a ball screw axial sealing device according to the present invention;

FIG. 2 is a schematic structural diagram of a chassis of the present invention;

FIG. 3 is a schematic view of a partial structure in the direction H-H of A in FIG. 2;

wherein: the ball screw comprises a box body 10, a ball screw 12, an inner lining plate 14, a fixing plate 16, a fixing seat 18, a sealing seat 20, a rubber gasket 22, an annular protrusion 24, an annular groove 26, a sealing groove 28, a sealing ring 30, a groove 32 and a protrusion 34.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 3, an axial sealing device for a ball screw includes a housing 10 and a ball screw 12, wherein the ball screw 12 is disposed inside the housing 10. An inner lining plate 14 is installed on the inner side wall of the box 10, the centers of the fixed plate 16 and the inner lining plate 14 are both opened, and the openings are in the same axial direction, and both sides of the inner lining plate 14 are both opened and are hollow. The inner lining plate 14 is provided with a fixing plate 16 for sealing, and the fixing base 18 is mounted on an opening of the fixing plate 16 to mount the ball screw 12. The ball screw 12 passes through the fixing base 18, the fixing plate 16 and the inner lining plate 14 to the outside of the housing 10. The box body 10 is provided with a sealing seat 20 outside, a rubber gasket 22 is arranged on the sealing seat 20, and the sealing seat 20 and the rubber gasket 22 are arranged on the ball screw 12, so that the box body 10 is further sealed, and gas is prevented from escaping from the box body when the ball screw 12 is used.

The side wall of the case 10 is provided with an annular protrusion 24 facing the sealing seat 20, and the annular protrusion 14 is used for mounting the sealing seat 20. The sealing seat 20 is provided with an annular groove 26 corresponding to the annular protrusion 24, and the sealing seat 20 is connected with the box 10 through the annular protrusion 24 and the annular groove 26. The annular protrusion 24 is pressed into the annular groove 26, which is beneficial to fixing the seal seat 20 on the box body, and increases the stability of the seal seat 20, thereby playing a role in further sealing. The sealing seat 20 is further provided with a plurality of annular sealing grooves 28 at positions close to the box body 10, and sealing rings 30 are arranged inside the sealing grooves 28, so that gas can be prevented from flowing out of gaps at the joints of the box body 10 and the sealing seat 20 to pollute the use environment. A plurality of sealing rings 30 are arranged around the ball screw, so that the box body is prevented from air leakage, and further sealing is realized.

The sealing seat 20 is provided with a plurality of grooves 32 for mounting the rubber mat 22, the rubber mat 22 is provided with a plurality of protrusions 34 corresponding to the grooves 32, and the rubber mat 22 is mounted on the sealing seat 20 through the protrusions 34. The rubber gasket 22 is connected with the groove of the sealing seat 20 through the protrusion, so that the rubber gasket is mounted on the sealing seat to seal the sealing seat 20.

The diameter of the opening of the fixed plate 16 is smaller than that of the opening of the inner lining plate 14, the fixed seat 18 is mounted on the opening of the fixed plate 16 so that the fixed plate 16 covers the inner lining plate 14, and a cavity is formed among the fixed seat 18, the fixed plate 16 and the inner lining plate 14 to prevent gas from directly permeating through the box body 10 to leak. The ball screw shaft passes through the fixed plate 16 and the inner liner plate 14 to the outside of the housing 10.

The principle of the ball screw axial sealing device provided by the utility model is as follows: ball 12 passes the interior bushing plate 14 that sets up in the inside of box 10, the opening of fixed plate 16 and

fixing base

18, 18 openings of fixing base carry out sealed for the first time to ball 12 axial, seal receptacle 20 sets up the outside at box 10, because the fixing base 18, be formed with the cavity between fixed plate 16 and the interior bushing plate 14, seal receptacle 20 carries out sealed for the second time to ball 12's axial, flow out from box 10 with the gas that prevents to leak, cushion 22 sets up on the seal receptacle, carry out sealed for the third time to ball 12, with the purpose that prevents the leakage of harmful gas in the box 10, guarantee operational environment's safety.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a ball axial seal device, includes a box and sets up the inside ball of box, its characterized in that: an inner lining plate is arranged on the side wall of the box body, and a fixing plate for sealing is arranged on the inner lining plate; a fixed seat for mounting the ball screw is arranged on the fixed plate, and the ball screw penetrates through the fixed seat, the fixed plate and the inner lining plate to the outside of the box body; the sealing device is characterized in that a sealing seat for sealing is arranged outside the box body, a rubber mat is arranged on the sealing seat, and the sealing seat and the rubber mat are arranged on the ball screw.

2. The ball screw axial seal device according to claim 1, wherein: the side wall of the box body is provided with an annular protrusion facing the sealing seat, the sealing seat is provided with an annular groove corresponding to the annular protrusion, and the sealing seat is connected with the box body through the annular protrusion and the annular groove.

3. The ball screw axial seal device according to claim 2, wherein: the position that the seal receptacle is close to the box still is provided with the seal groove of a plurality of annular, the inside of seal groove is provided with the sealing washer.

4. The ball screw axial seal device according to claim 2, wherein: the sealing seat is provided with a plurality of grooves for mounting the rubber mat, and the rubber mat is provided with a plurality of bulges corresponding to the grooves.

5. The ball screw axial seal device according to claim 1, wherein: the centers of the fixed plate and the inner lining plate are both provided with openings, the openings are in the same axial direction, the diameter of the opening of the fixed plate is smaller than that of the opening of the inner lining plate, and the fixed seat is installed on the opening of the fixed plate.

6. The ball screw axial seal device according to claim 5, wherein: the two sides of the lining plate are both provided with openings and are hollow inside.