CN211563645U

CN211563645U - Sealing structure for installing screen of vibrating screen

Info

Publication number: CN211563645U
Application number: CN201922419872.2U
Authority: CN
Inventors: 谭劲; 何勇; 任万年
Original assignee: Guanghan Alishengmu Petroleum Equipment Co ltd
Current assignee: Guanghan Alishengmu Petroleum Equipment Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-25
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a sealing structure for installing a screen of a vibrating screen, wherein the screen is arranged on a support frame of the vibrating screen, the sealing structure comprises a support component and a sealing component which are arranged between the support frame and the screen, the support component comprises four support beams which are fixedly arranged on the support frame, and the sealing component comprises sealing elements which are respectively arranged on the support beams; the sealing element comprises a sealing body and a connecting part, the sealing element is fixedly sleeved on the supporting beam through the connecting part, at least one group of sealing convex strips are arranged on the sealing end face of the sealing body in a protruding mode, and the sealing convex strips are arranged along the length direction of the sealing body. The sealing structure can solve the problem that the vibrating screen can not be effectively sealed between the screen and the vibrating screen in the working process.

Description

Sealing structure for installing screen of vibrating screen

Technical Field

The utility model relates to a shale shaker technical field, in particular to a seal structure for installation of shale shaker screen cloth.

Background

The screen sealing device of the drilling fluid vibrating screen for the petroleum and natural gas drilling engineering has multiple types at present, if the sealing is not well treated, the screen is easy to displace or loosen in the using process, so that slurry leakage is caused, the solid content of slurry in a tank is increased, and the treatment effect of the whole process is influenced. At present, the existing sealing mode generally adopts the steps that C-shaped steel is welded on a rectangular pipe, and then a sealing element is clamped in a C-shaped groove; or the rubber plate and the rectangular pipe are connected together through the countersunk head bolt to seal the screen. According to the sealing mode adopting the rubber strip or the rubber plate, when the vibrating screen works, repeated friction occurs between the screen and the sealing element or the rubber plate, so that local abrasion to the rubber strip and the rubber plate is easily caused, and sealing failure is caused.

The utility model discloses a novel sealing device for a screen of a drilling fluid vibrating screen (CN207238475U), wherein a sealing component for sealing comprises a sealing strip and a sealing supporting beam, the sealing supporting beam is arranged on the upper surface of a rectangular pipe, the sealing strip is arranged between the sealing supporting beam and a supporting rod, the cross section of the sealing strip is C-shaped, and the sealing supporting beam is clamped in the sealing strip; meanwhile, the sealing strip comprises an arc section and a pair of clamping sections, the arc section of the sealing strip is arranged on the arc supporting surface, and when the wedge block above the screen is pressed downwards, the sealing strip is concentrated in the middle due to the arc surface design, so that the screen and the sealing strip can be tightly attached. The sealing surface of the sealing strip in the device adopts an arc surface structure, so that the screen and the sealing strip can have better sealing performance. However, when the screen of the vibrating screen is fixed, the screen is usually fixed at the middle position of the screen through the wedge, the wedge applies an acting force to the screen to press the screen against the sealing strip, at the moment, the force acting between the screen and the sealing strip at the middle position is the largest, and the two ends of the sealing strip are easy to warp in the vibrating process and separate from the supporting piece of the sealing strip, so that the sealing performance of the sealing strip is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealing reliability and job stabilization nature are high for the seal structure of shale shaker screen cloth installation can solve the shale shaker and can not effectively sealed problem between screen cloth and the shale shaker in the course of the work.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

the sealing structure comprises a supporting assembly and a sealing assembly, wherein the supporting assembly and the sealing assembly are arranged between the supporting frame and the screen, the supporting assembly comprises four supporting beams fixedly arranged on the supporting frame, the supporting beams form a frame structure matched with the shape of the screen, and the sealing assembly comprises sealing elements respectively arranged on the supporting beams;

the sealing member includes sealed body and connecting portion, and the sealing member passes through the fixed cover of connecting portion to be established on a supporting beam, the seal face protrusion of sealed body is provided with at least a set of sealed sand grip, sealed sand grip sets up along sealed body length direction, and sealed sand grip sets up the sealed sand grip in the left side and the right side at sealed body both ends including the symmetry, left side sealed sand grip and right side sealed sand grip are respectively from both ends to the middle part extension about sealed body.

Among the above-mentioned technical scheme, furtherly, the height of the sealed body of left side sealed sand grip and right side sealed sand grip protrusion diminishes gradually to the middle part direction from sealed body tip.

Among the above-mentioned technical scheme, furtherly, sealed sand grip is convex solid cross-sectional structure, and the cross sectional area of left side sealed sand grip and right side sealed sand grip diminishes from sealed this end of body to middle part direction gradually.

Among the above-mentioned technical scheme, further, between two sealing members that adjacent set up, the setting of butt joint each other of sealing sand grip on two sealing members of tip hookup location.

Among the above-mentioned technical scheme, furtherly, be provided with two sets of sealed sand grips on the sealed body, two sets of sealed sand grips set up along sealed body width direction interval side by side.

In the above technical scheme, further, the connecting portion includes cladding adhesive tape that sets up respectively in sealing body both sides, cladding adhesive tape one end is fixed connection respectively on sealing body, and cladding adhesive tape's free end sets up towards the middle relative slope of sealing body respectively.

In the above technical scheme, further, one side cladding adhesive tape thickness will be greater than the thickness of opposite side cladding adhesive tape, and the great cladding adhesive tape of thickness sets up in the one side outside towards the screen cloth.

Among the above-mentioned technical scheme, further, sealing convex strip is close to great cladding adhesive tape one side of thickness and sets up.

Among the above-mentioned technical scheme, further, be located the sealing member of shale shaker both sides, the one side that lies in being close to shale shaker sieve incasement wall on its sealed body is provided with the side seal strip, the side seal strip sets up between sieve incasement wall and screen cloth.

In the above technical scheme, further, the side sealing strip inclines towards screen box one side on sealed body and sets up.

The utility model discloses in with the fixed setting of sealing member on a supporting beam, the screen cloth setting realizes the installation and the sealing to the screen cloth on the sealing member, set up sealed sand grip respectively through the seal face both ends at the sealing member, adopt the wedge piece when screen cloth middle part position carries out fixed mounting to the screen cloth in shale shaker sieve case both sides, because the sealed sand grip of the protrusion setting in seal face both ends, make closely laminating between each part homoenergetic of whole seal face of sealing member and the screen cloth, realize the seal installation to the screen cloth, can guarantee well that the screen cloth possesses good sealing performance in the course of the work.

Meanwhile, the side sealing strips are arranged on the sealing parts positioned on the two sides of the screen box, so that the gap between the screen cloth and the screen box is further sealed, and the integral installation sealing performance of the screen cloth can be further improved.

Drawings

Fig. 1 is the utility model discloses shale shaker screen cloth mounting structure schematic diagram.

Fig. 2 is a schematic view of the installation structure of the middle sealing member of the present invention.

Fig. 3 is a partial schematic view of a portion a of fig. 2.

FIG. 4 is a schematic diagram of an embodiment of a sealing member according to the present invention; wherein a) is a front view of the sealing element structure, b) is a cross-sectional schematic view of the sealing element, and c) is a top view of the sealing element structure.

Fig. 5 is a schematic cross-sectional view of the sealing member structure located on both sides of the vibrating screen according to the present invention.

In the figure:

101. a screen box 201, a support frame 301, a support beam 401 and a screen;

501. a seal, 511, a seal body; 512. a left sealing bead 513, a right sealing bead;

514. coating an adhesive tape; 515. and (4) side sealing strips.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the screen 401 of the shaker is arranged on a support frame 201 of the shaker, the support frame 201 being typically fixedly mounted on the screen box 101 of the shaker. The seal structure described in this embodiment includes a support assembly and a seal assembly disposed between the support frame 201 and the screen 401; the support assembly comprises four support beams 301 fixedly arranged on the support frame, and the support beams 301 form a frame structure matched with the shape of the screen; the sealing assembly includes sealing members 501 respectively disposed on the support beams 301. The screen cloth sets up on a supporting beam's sealing member, carries out fixed mounting to the screen cloth through the wedge piece, realizes the sealed installation of screen cloth on the shale shaker.

As shown in fig. 4, the sealing member in this embodiment includes a sealing body 511 for performing a sealing function of the sealing member, and a connecting portion for fixing the sealing member, which is fixedly attached to the support beam. In this embodiment, the sealing body 511 is a strip structure with a rectangular cross section, and the sealing end surface of the sealing body is a plane. The connecting portion of sealing member is including setting up the cladding adhesive tape 514 in sealed body both sides respectively, and cladding adhesive tape 514 all is rectangular cross section strip structure. One end of each of the wrapping rubber strips 514 is fixedly connected to the sealing body 511, and the free ends of the two wrapping rubber strips 514 are inclined toward the middle of the sealing body. The sealing element is of a strip structure with a groove-shaped cross section, the whole sealing body and the connecting part are of an inverted trapezoidal cross section structure, and the groove-shaped cross section of the sealing element is also inverted trapezoidal. The connecting part with the structure can provide good fixing clamping force for the sealing element through the elasticity of the coating rubber strip, so that the sealing element can be fixedly arranged on the supporting beam.

The sealed terminal surface of sealed body 511 goes up the protrusion and is provided with two sets of sealed sand grips in this embodiment, and two sets of sealed sand grips set up along sealed body width direction interval side by side. The sealing convex strips are arranged along the length direction of the sealing body respectively, the sealing convex strips comprise a left sealing convex strip 512 and a right sealing convex strip 513 which are symmetrically arranged at two ends of the sealing body, and the left sealing convex strip 512 and the right sealing convex strip 513 extend from the left end and the right end of the sealing body to the middle part respectively. Set up sealed sand grip respectively through the seal face both ends at the sealing member, adopt the wedge piece to carry out fixed mounting in the middle part of the screen cloth in shale shaker sieve case both sides, because the protruding sealed sand grip that sets up in seal face both ends makes and closely laminates between each part homoenergetic of whole seal face of sealing member and the screen cloth, realize the seal installation to the screen cloth, can guarantee well that the screen cloth possesses good sealing performance in the course of the work.

Preferably, the height of the left and right sealing

ribs

512 and 513 protruding from the sealing body is gradually reduced from the end of the sealing body toward the middle. The convex height of sealed sand grip adopts gradual change structural style, and applicable middle part fixed mode who adopts when fixing the screen cloth in the shale shaker, joint strip when middle part atress is used, and the warpage can not take place for both ends under the effect of sealed sand grip to closely laminate between each part homoenergetic and the screen cloth.

Referring to fig. 4, the cross section of the sealing rib in this embodiment is a circular arc solid or hollow cross section with a radius of 2.5 mm. The cross-sectional areas of the left sealing rib 512 and the right sealing rib 513 are gradually reduced from the end portions toward the middle portions of the seal body.

As shown in fig. 2 and 3, in order to ensure the overall sealing performance of the sealing strip, in this embodiment, between two adjacent sealing elements, the sealing ribs on the two sealing elements 501 are butted against each other at the end connecting position. As shown in fig. 3, the end of each sealing strip is set to be at an inclination angle of 45 degrees, two adjacent sealing elements are vertically butted at the end, and the sealing convex strips arranged on the sealing elements correspond to each other, so that complete sealing is formed on the whole sealing end face, and the sealing structure is guaranteed to have better sealing performance.

Take the installation of screen cloth that the size is 1050mm 700mm as an example, the sealing member that adopts in the seal structure in this embodiment is two length long edge joint strip and two length short edge joint strip that are 705mm that length is 1070mm, and the height of sealing sand grip on long edge joint strip and the short edge joint strip at its tip is 2mm respectively to extend towards sealing member middle part direction and diminish gradually, the length of sealing sand grip on the long edge joint strip is 250mm, and the length of sealing sand grip on the short edge joint strip is 200 mm. At the moment, the four corners of the whole sealing structure are provided with the bulge structures to support and seal the four corners of the screen, so that the sealing structure has good sealing performance.

Preferably, in this embodiment, the thickness of the coating rubber strip 514 on one side of the joint portion of the sealing rubber strip is greater than the thickness of the coating rubber strip 514 on the other side; when the sealing rubber strip is installed, the coating rubber strip on one side with larger thickness is arranged towards the outer side, and the coating rubber strip on one side with smaller thickness is arranged towards the inner side. The sealing ribs are disposed near one side of the coating rubber strip 514 with a larger thickness to increase the overall usability of the sealing rubber strip.

Example two

The present embodiment differs from the first embodiment in structure in that:

as shown in fig. 1 and 5, in the sealing structure 501 of the present embodiment, which is located at both sides of the vibrating screen, a side sealing strip 515 is disposed on the sealing body 511 at a side close to the inner wall of the vibrating screen box, and the side sealing strip 515 is disposed between the inner wall of the screen box 101 and the screen cloth 401. Through setting up the side seal strip and sealing up between screen cloth terminal surface and the shale shaker sieve case, increase the area of contact between sealing rubber strip and the screen cloth simultaneously, increase sealed effect between the two.

Preferably, the side sealing strips 515 are disposed obliquely on the sealing body toward the side of the sieve box 101. The elasticity of usable side seal strip provides certain effort for between side seal strip and shale shaker sieve case and the screen cloth when joint strip installs to guarantee that the side seal strip can closely cooperate with between shale shaker sieve case and the screen cloth, guarantee the sealing performance between screen cloth and the shale shaker sieve case.

In this embodiment, the sealing member 501 is integrally formed of nitrile rubber.

The present invention is not limited to the above description and drawings, but should be understood as being illustrative and not restrictive, and the technical features can be replaced and modified without creative efforts by those skilled in the art according to the technical content disclosed, all falling within the scope of the present invention.

Claims

1. A seal structure for installation of shale shaker screen cloth, the screen cloth setting is on the support frame of shale shaker, its characterized in that: the sealing structure comprises a supporting assembly and a sealing assembly which are arranged between a supporting frame and the screen, the supporting assembly comprises four supporting beams fixedly arranged on the supporting frame, the supporting beams form a frame structure matched with the shape of the screen, and the sealing assembly comprises sealing elements respectively arranged on the supporting beams;

2. A seal arrangement for screen mounting of a vibrating screen as claimed in claim 1, wherein: the height of the left sealing convex strip and the right sealing convex strip protruding out of the sealing body is gradually reduced from the end part of the sealing body to the middle part.

3. A seal arrangement for screen mounting of a vibrating screen as claimed in claim 2, wherein: the sealing convex strips are of arc-shaped solid cross-section structures, and the cross-sectional areas of the left sealing convex strips and the right sealing convex strips are gradually reduced from the end part of the sealing body to the middle part.

4. A seal arrangement for screen mounting of a vibrating screen as claimed in claim 1, wherein: between two adjacent sealing members, the sealing convex strips on the two sealing members are butted with each other at the end connecting position.

5. A seal arrangement for screen mounting of a vibrating screen according to any of claims 1 to 4, characterised in that: the sealing body is provided with two groups of sealing convex strips, and the two groups of sealing convex strips are arranged side by side at intervals along the width direction of the sealing body.

6. A sealing arrangement for mounting of screens of vibrating screens according to any of claims 1-3, characterised in that: the connecting portion comprises coating rubber strips arranged on two sides of the sealing body respectively, one ends of the coating rubber strips are fixedly connected to the sealing body respectively, and free ends of the coating rubber strips are arranged in a manner of inclining towards the middle of the sealing body relatively.

7. A seal arrangement for screen mounting of a vibrating screen according to claim 6, wherein: the thickness of the coating rubber strip on one side is larger than that of the coating rubber strip on the other side, and the coating rubber strip with larger thickness is arranged on one side facing the outside of the screen.

8. A seal arrangement for screen mounting of a vibrating screen according to claim 7, wherein: the sealing convex strip is arranged close to one side of the coating rubber strip with larger thickness.

9. A sealing arrangement for mounting of screens of vibrating screens according to any of claims 1-3, characterised in that: the sealing elements are positioned on two sides of the vibrating screen, and side sealing strips are arranged on one side, close to the inner wall of the screen box of the vibrating screen, of the sealing body of the sealing elements, and the side sealing strips are arranged between the inner wall of the screen box and the screen.

10. A seal arrangement for screen mounting of a vibrating screen according to claim 9, wherein: the side sealing strips are obliquely arranged on the sealing body towards one side of the screen box.