CN218177966U

CN218177966U - Double-gate airlock wear-resistant valve capable of improving sealing reliability

Info

Publication number: CN218177966U
Application number: CN202222524924.4U
Authority: CN
Inventors: 刘光明; 刘萍
Original assignee: Changzhou Longjin Machinery Co ltd
Current assignee: Changzhou Longjin Machinery Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2022-12-30
Anticipated expiration: 2032-09-22

Abstract

The utility model belongs to the technical field of the valve and specifically relates to a improve two floodgates airlock wear-resisting valve of sealing reliability is related to, it includes the disk seat, be provided with first valve plate and second valve plate on the disk seat, first valve plate is located the feed inlet department of disk seat, the second valve plate is located the discharge gate department of disk seat, be provided with supporting mechanism on the disk seat, supporting mechanism is close to first valve plate department, supporting mechanism is including the fixed prop that slides the setting and the control assembly who is used for controlling the fixed prop and slides, the fixed prop is located one side that first valve plate is close to the second valve plate, the fixed prop is used for supporting first valve plate. This application has the effect that improves double-brake airlock wear valve sealing reliability.

Description

Double-gate airlock wear-resistant valve capable of improving sealing reliability

Technical Field

The application relates to the field of valves, in particular to a double-gate airlock wear-resistant valve capable of improving sealing reliability.

Background

The double-gate air-lock wear-resistant valve is a valve widely used in pipeline valves, and is suitable for opening and closing inlet and outlet pipelines of dry ash systems and slag systems in power plants and cement plants.

In the related art, the double-gate airlock wear-resistant valve comprises a valve seat, wherein a first valve plate and a second valve plate are arranged on the valve seat, the first valve plate is used for closing a feed port of the valve seat, the second valve plate is used for closing a discharge port of the valve seat, the first valve plate and the second valve plate are connected through a tensioning spring, the tensioning spring generates opposite tension to the first valve plate and the second valve plate, and the first valve plate and the second valve plate are extruded to enable the first valve plate and the second valve plate to generate a trend of moving towards directions away from each other; the valve seat is provided with a cylinder for driving the valve plate to open or close the feed inlet and the discharge outlet, and the cylinder is connected to the tension spring.

When the materials need to circulate, the cylinder is started to enable the first valve plate to be separated from the feeding hole of the valve seat and the second valve plate to be separated from the discharging hole of the valve seat, and the materials can circulate;

when the material circulation is not needed, the cylinder is started to enable the first valve plate to close the feeding hole of the valve seat and the second valve plate to close the discharging hole of the valve seat.

In view of the above related art, the inventor believes that, when the double-gate airlock wear-resistant valve is in the closed state, and the instant pressure when the material flows onto the first valve plate is greater than the tension of the tensioning spring on the first valve plate, the first valve plate is pushed by the material in the direction toward the second valve plate, at this time, the feed inlets of the first valve plate and the valve seat are separated from each other to generate a gap, the material easily flows out from the gap, and therefore the sealing reliability of the double-gate airlock wear-resistant valve needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve the reliability of double-brake airlock wear-resisting valve seal, the application provides a double-brake airlock wear-resisting valve for improving the seal reliability.

The application provides a pair of floodgate airlock wear-resisting valve who improves sealing reliability adopts following technical scheme:

the utility model provides an improve sealed reliability's double-gate airlock wear-resisting valve, includes the disk seat, is provided with first valve plate and second valve plate on the disk seat, and first valve plate is located the feed inlet department of disk seat, and the second valve plate is located the discharge gate department of disk seat, be provided with supporting mechanism on the disk seat, supporting mechanism is close to first valve plate department, supporting mechanism includes the fixed prop, the fixed prop is located one side that first valve plate is close to the second valve plate, the fixed prop is used for supporting first valve plate.

Through adopting above-mentioned technical scheme, when first valve plate closed the feed inlet of disk seat, even when the material circulation produced pressure in the twinkling of an eye to first valve plate was greater than the tension of tensioning spring to first valve plate, because fixed prop provides the support for first valve plate can with the disk seat on the outer wall laminating of feed inlet department, thereby improved the sealed reliability of double-gate airlock wear-resisting valve.

Optionally, a first yielding groove is formed in the valve seat, and the fixed support is arranged in the first yielding groove in a sliding mode.

Through adopting above-mentioned technical scheme, the fixed stay sets up that slides, and when first valve plate removed the feed inlet to the closed disk seat, the fixed stay slides again and provides the support to first valve plate, reduces when the feed inlet of first valve plate closed disk seat and the collision between the fixed stay, has reduced the wearing and tearing to first valve plate and fixed stay, has increased the life of first valve plate and fixed stay.

Optionally, the supporting mechanism further comprises a control assembly, the control assembly controls the fixed support to slide, and the control assembly comprises a control column and a control rod;

a second abdicating groove is formed in the valve seat, and the control column is arranged in the second abdicating groove in a sliding manner;

the valve seat is provided with an installation cavity, the installation cavity is communicated with the first abdicating groove and the second abdicating groove, and the control rod is rotatably arranged in the installation cavity;

the utility model discloses a valve plate, including fixed support, control post, connecting piece and fixed support, fixed support and control post are located the both sides of control lever axis of rotation respectively, the one end of control lever is passed through the connecting piece and is connected with the fixed support, the control post can slide to pushing control lever and rotate to the primary importance, works as when the control lever is located the primary importance, the one end that the control lever is connected with the fixed support promotes fixed support to the second place, works as when the fixed support is located the second place, one side butt that fixed support and first valve plate are close to the second valve plate.

By adopting the technical scheme, when the first valve plate is not closed to the feeding hole of the valve seat, the control column is not contacted with the first valve plate, and the fixed support column is not contacted with the first valve plate;

when the first valve plate moves to completely close the feed port of the valve seat and the first valve plate is attached to the inner wall of the valve seat, the first valve plate pushes the control column to slide towards the direction of the mounting chamber, the control column slides to push the control rod to rotate, the control rod rotates to push the fixed support column to slide, and the fixed support column moves to abut against one surface, close to the second valve plate, of the first valve plate;

when the first valve plate moves to the feed inlet separated from the valve seat, the control rod rotates to push the control column to restore the original position, and the control rod enables the fixed support column to slide to be separated from the first valve plate through the connecting piece;

above-mentioned process has realized when first valve plate removes the feed inlet to closing the disk seat, and control assembly control fixed stay slides to and is close to the one side butt of second valve plate with first valve plate, and controls the slip of fixed stay and control post, the rotation of control lever, green by the removal of first valve plate.

Optionally, a first sliding block is arranged on the fixed strut, and a first sliding groove for the first sliding block to penetrate through is formed in the inner wall of the first abdicating groove; the control post is provided with a second sliding block, and a second sliding groove for the second sliding block to penetrate is formed in the inner wall of the second abdicating groove.

By adopting the technical scheme, the first sliding block and the first sliding groove are matched for use, so that the fixed support column is not easy to slide out of the first abdicating groove, and the stability of the fixed support column during sliding is improved; the second slider and the cooperation of second spout are used for the control post is difficult to let the inslot roll-off from the second, has still improved the stability when control post slides.

Optionally, the distance between one surface of the fixing support far away from the second valve plate and one surface of the second valve plate close to the first valve plate is greater than the distance between one surface of the first valve plate far away from the second valve plate and one surface of the second valve plate close to the first valve plate; a compensation assembly is arranged on the inner wall of the first sliding block and comprises an expansion spring, one end of the expansion spring is connected with the first sliding block, and the other end of the expansion spring is abutted against the inner wall of the first sliding groove; the inner wall of the first abdicating groove is provided with an elastic pad, and the elastic pad is connected with the inner wall of the first abdicating groove.

By adopting the technical scheme, the distance between the surface of the fixed support far away from the second valve plate and the surface of the second valve plate close to the first valve plate is larger than the distance between the surface of the first valve plate far away from the second valve plate and the surface of the second valve plate close to the first valve plate, so that when the first valve plate closes the feed port of the valve seat, the telescopic spring is compressed; when the first valve plate opens and closes the feed inlet of the valve seat, the first valve plate and the outer wall of the feed inlet on the valve seat collide with each other, and certain abrasion can be caused by long-term collision;

when first valve plate produced wearing and tearing, expanding spring for resumeing to original length, provides an effort towards the disk seat feed inlet for the fixed bolster, and the cushion provides the surplus that moves towards the disk seat feed inlet for the fixed bolster to make first valve plate still can with the disk seat on the outer wall laminating of feed inlet department.

Optionally, the compensation assembly further comprises a telescopic rod, one end of the telescopic rod is connected with the first sliding block, the other end of the telescopic rod is abutted to the inner wall of the first sliding groove, and the telescopic rod is sleeved with the telescopic spring.

Through adopting above-mentioned technical scheme, expanding spring breaks away from the butt along with the easy diapire with first spout of in-process that first slider removed, and makes expanding spring produce the damage, and setting up of telescopic link provides support and spacing for expanding spring, has reduced expanding spring and has produced the possibility of damaging.

Optionally, the first sliding block is a dovetail block, and the first sliding groove is a dovetail groove.

Through adopting above-mentioned technical scheme, the stability when the fixed stay slides has further been improved in setting up of dovetail and forked tail piece, and makes expanding spring when providing the compensation for the fixed stay, and roll-off in the first spout is difficult followed to first slider.

Optionally, the telescopic link includes the barrel and the body of rod, the body of rod slips in the barrel, be provided with the gag lever post on the week lateral wall of the body of rod, set up the spacing groove that supplies the gag lever post to slide on the inner wall of barrel.

Through adopting above-mentioned technical scheme, gag lever post and spacing groove cooperation are used, have reduced the body of rod and have followed the interior possibility that slips of barrel.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the first valve plate moves to the feed inlet of the closed valve seat, the control assembly controls the fixed support column to slide to abut against one surface, close to the second valve plate, of the first valve plate, and the sliding of the fixed support column and the control column and the rotation of the control rod are controlled by the movement of the first valve plate, so that the valve seat is green and environment-friendly;

2. because the distance between one surface of the fixed support far away from the second valve plate and one surface of the second valve plate close to the first valve plate is larger than the distance between one surface of the first valve plate far away from the second valve plate and one surface of the second valve plate close to the first valve plate, when the first valve plate closes the feed port of the valve seat, the expansion spring is compressed; when the first valve plate is abraded, the expansion spring returns to the original length to provide an acting force towards the feeding hole of the valve seat for the fixed support column, and the elastic pad provides a moving allowance towards the feeding hole of the valve seat for the fixed support column, so that the first valve plate can still be attached to the outer wall of the feeding hole in the valve seat;

3. the telescopic link set up to the expanding spring provides support and spacing, has reduced the possibility that expanding spring produced the damage.

Drawings

Fig. 1 is a schematic view of the overall structure of a double-gate airlock wear-resistant valve for improving sealing reliability according to an embodiment of the present application.

Fig. 2 is a schematic structural view for showing that the fixing support is not in contact with the first valve plate in the embodiment of the present application.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a schematic view for showing a structure when the fixing support is in contact with the first valve plate in the embodiment of the present application.

Fig. 5 is a schematic structural diagram for showing a compensation component in the embodiment of the present application.

Fig. 6 is a sectional view showing a stopper rod and a stopper groove in the embodiment of the present application.

Description of reference numerals: 1. a valve seat; 2. a first valve plate; 3. a second valve plate; 4. tensioning the spring; 5. a cylinder; 6. a support mechanism; 61. fixing the strut; 611. a first abdicating groove; 612. a first slider; 613. a first chute; 62. a control component; 621. a control column; 6211. a second abdicating groove; 6212. a second slider; 6213. a second chute; 622. a control lever; 6221. installing a chamber; 623. a connecting member; 7. a compensation component; 71. a tension spring; 72. a telescopic rod; 721. a cylinder body; 722. a rod body; 7221. a limiting rod; 7222. a limiting groove; 8. a cushion pad.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a double-brake airlock wear-resistant valve capable of improving sealing reliability. Referring to fig. 1 and 2, the double-gate airlock wear-resistant valve for improving sealing reliability comprises a valve seat 1, a first valve plate 2 and a second valve plate 3 are installed on the valve seat 1, the first valve plate 2 is located at a feed inlet of the valve seat 1, the second valve plate 3 is located at a discharge outlet of the valve seat 1, the first valve plate 2 is used for sealing the feed inlet of the valve seat 1, the second valve plate 3 is used for sealing the discharge outlet of the valve seat 1, the first valve plate 2 and the second valve plate 3 are connected through a tensioning spring 4, a cylinder 5 is installed on the valve seat 1, a piston rod of the cylinder 5 is fixedly connected with the tensioning spring 4, and the cylinder 5 drives the first valve plate 2 and the second valve plate 3 to be opened and closed simultaneously.

When the material needs to be circulated, the cylinder 5 is started to enable the first valve plate 2 to be separated from the feeding hole of the valve seat 1 and the second valve plate 3 to be separated from the discharging hole of the valve seat 1, and the material is circulated; when the material circulation is not needed, the cylinder 5 is started to enable the first valve plate 2 to close the feeding hole of the valve seat 1 and the second valve plate 3 to close the discharging hole of the valve seat 1.

Referring to fig. 2 and 3, the support mechanism 6 is mounted on the valve seat 1, and the support mechanism 6 includes a fixed support 61 slidably disposed and a control assembly 62 for controlling the fixed support 61. The fixed support 61 is located on one side of the first valve plate 2 close to the second valve plate 3, the valve seat 1 is provided with a first yielding groove 611, the fixed support 61 can slide to be located in the first yielding groove 611, and the fixed support 61 can also slide to be abutted against one surface of the first valve plate 2 close to the second valve plate 3.

When first valve plate 2 seals the feed inlet of disk seat 1, even when the material circulation is greater than tensioning spring 4 to the tension of first valve plate 2 to the pressure in the twinkling of an eye that first valve plate 2 produced, because fixed stay 61 provides the support for first valve plate 2 can with disk seat 1 go up the outer wall laminating of feed inlet department, thereby has improved the sealed reliability of double-gate airlock wear-resisting valve. Because the fixing support post 61 slides in the first receding groove 611, when the first valve plate 2 moves to the feed inlet of the closed valve seat 1, the fixing support post 61 slides to abut against one surface, close to the second valve plate 3, of the first valve plate 2 again, so as to support the first valve plate 2, reduce the collision between the first valve plate 2 and the fixing support post 61 when the first valve plate 2 closes the feed inlet of the closed valve seat 1, reduce the abrasion to the first valve plate 2 and the fixing support post 61, and prolong the service life of the first valve plate 2 and the fixing support post 61.

Referring to fig. 2, 3 and 4, the control assembly 62 includes a control post 621 slidably disposed and a control rod 622 rotatably disposed, a second recess 6211 is disposed on the valve seat 1, the control post 621 slidably moves in the second recess 6211, an installation chamber 6221 is disposed on the valve seat 1, the installation chamber 6221 is communicated with both the first recess 611 and the second recess 6211, and the control rod 622 is rotatably connected to an inner wall of the installation chamber 6221 through a torsion spring; the fixed support post 61 and the control post 621 are respectively located on two sides of the rotating shaft of the control rod 622, one end of the control rod 622 is connected with the fixed support post 61 through a connecting piece 623, and in the embodiment, the connecting piece 623 is a connecting rope.

When the first valve plate 2 is not closed to the feed port of the valve seat 1, the control column 621 does not contact with the first valve plate 2, and the fixed support column 61 does not contact with the first valve plate 2;

when the first valve plate 2 moves to completely close the feed port of the valve seat 1 and the first valve plate 2 is attached to the inner wall of the valve seat 1, the first valve plate 2 pushes the control column 621 to slide towards the direction of the mounting chamber 6221, the control column 621 slides to push the control rod 622 to rotate, the control rod 622 rotates to push the fixed support post 61 to slide, and the fixed support post 61 slides to abut against one surface of the first valve plate 2 close to the second valve plate 3;

when the first valve plate 2 moves to the feed port separated from the valve seat 1, the control rod 622 rotates to push the control post 621 to restore the original position, and the control rod 622 slides the fixing support post 61 to be separated from the first valve plate 2 through the connecting piece 623;

above-mentioned process has realized when first valve plate 2 removes the feed inlet of closing valve seat 1, and control assembly 62 control fixed pillar 61 cunning is to being close to the one side butt of second valve plate 3 with first valve plate 2, and is controlled the slip of fixed pillar 61 and control post 621, the rotation of control lever 622 by the removal of first valve plate 2, green.

Referring to fig. 3, a first slider 612 is fixedly connected to the bottom surface of the fixed support 61, a first sliding groove 613 for the first slider 612 to penetrate through is formed in the bottom wall of the first abdicating groove 611, the first slider 612 is located in the first sliding groove 613 to slide, so that the fixed support 61 is not easy to slide out of the first abdicating groove 611, and the stability of the fixed support 61 during sliding is further improved; fixedly connected with second slider 6212 on the bottom surface of control post 621, offer the second spout 6213 that supplies second slider 6212 to wear to establish on the inner wall of second groove 6211 of stepping down for the difficult roll-off in the second groove 6211 of stepping down of follow of control post 621 has still improved the stability when control post 621 slides.

Referring to fig. 2, fig. 3 and fig. 5, the distance between the one side of the second valve plate 3 and the one side of the second valve plate 3 close to the first valve plate 2, which are far away from the second valve plate 3, of the fixing strut 61 is greater than the distance between the one side of the first valve plate 2 and the one side of the second valve plate 3 close to the first valve plate 2, the one end of the fixing strut 61 close to the first valve plate 2 is in a wedge shape, collision between the fixing strut 61 and the first valve plate 2 is reduced, abrasion to the fixing strut 61 and the first valve plate 2 is reduced, and the service life of the fixing strut 61 and the first valve plate 2 is prolonged. The height of the first sliding block 612 is smaller than the depth of the first sliding groove 613, the compensation assembly 7 is mounted on the bottom surface of the first sliding block 612, the compensation assembly 7 comprises an expansion spring 71 and an expansion link 72 for limiting the expansion spring 71, and the expansion spring 71 is sleeved on the expansion link 72. One end of the extension spring 71 is fixedly connected to the bottom surface of the first slider 612, and the other end of the extension spring 71 abuts against the bottom wall of the first chute 613. A cushion pad 8 is fixedly mounted on the inner wall of the top of the first abdicating groove 611, one surface of the cushion pad 8 away from the fixing support 61 is fixedly connected with the inner wall of the top of the first abdicating groove 611, in this embodiment, the cushion pad 8 is made of silica gel.

Since the distance between the surface of the fixing support 61 far from the second valve plate 3 and the surface of the second valve plate 3 close to the first valve plate 2 is greater than the distance between the surface of the first valve plate 2 far from the second valve plate 3 and the surface of the second valve plate 3 close to the first valve plate 2, when the first valve plate 2 closes the feed opening of the valve seat 1, the extension spring 71 is compressed; when the first valve plate 2 opens and closes the feed port of the valve seat 1, the first valve plate 2 and the outer wall of the feed port on the valve seat 1 collide with each other, and certain abrasion is caused by long-term collision; when the first valve plate 2 is worn, the extension spring 71 provides an acting force towards the feeding hole of the valve seat 1 for the fixing support column 61 to restore to the original length, and the elastic pad provides a moving allowance towards the feeding hole of the valve seat 1 for the fixing support column 61, so that the first valve plate 2 can still be attached to the outer wall of the feeding hole of the valve seat 1.

Referring to fig. 3 and 6, the telescopic rod 72 includes a cylinder 721 and a rod body 722, the rod body 722 slides in the cylinder 721, the cylinder 721 is located above the rod body 722, the top surface of the cylinder 721 is fixedly connected with the bottom surface of the first slider 612, the bottom surface of the rod body 722 is abutted with the bottom wall of the first sliding groove 613, a limiting rod 7221 is fixedly connected to the peripheral side wall of the rod body 722, a limiting groove 7222 for the limiting rod 7221 to slide is provided on the inner wall of the cylinder 721, and the limiting groove 7222 penetrates through the side wall of the cylinder 721.

The extension spring 71 is easy to be separated from and abutted against the bottom wall of the first sliding groove 613 in the process of moving along with the first sliding block 612, so that the extension spring 71 is damaged, the extension rod 72 is arranged to provide support and limit for the extension spring 71, and the possibility of damage to the extension spring 71 is reduced; the limiting rod 7221 and the limiting groove 7222 are matched for use, so that the possibility that the rod body 722 slides out of the cylinder 721 is reduced.

The implementation principle of the double-gate airlock wear-resistant valve for improving the sealing reliability in the embodiment of the application is as follows: when the first valve plate 2 is not closed to the feed port of the valve seat 1, the control column 621 does not contact with the first valve plate 2, and the fixed support column 61 does not contact with the first valve plate 2;

when the cylinder 5 drives the first valve plate 2 to move until the first valve plate 2 is attached to the inner wall of the feeding port of the valve seat 1, the first valve plate 2 pushes the control post 621 to slide towards the direction of the mounting chamber 6221, the control post 621 slides until the control rod 622 is pushed to rotate, the control rod 622 rotates until the fixed support post 61 is pushed to slide, and the fixed support post 61 moves until the fixed support post abuts against one surface, close to the second valve plate 3, of the first valve plate 2;

when the first valve plate 2 moves to the position where the first valve plate is separated from the inlet of the valve seat 1, the control rod 622 rotates to push the control post 621 to return to the original position, and the control rod 622 slides the fixing support post 61 to be separated from the first valve plate 2 through the connecting piece 623.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an improve two floodgates airlock wear-resisting valves of sealing reliability, includes disk seat (1), is provided with first valve plate (2) and second valve plate (3) on disk seat (1), and first valve plate (2) are located the feed inlet department of disk seat (1), and second valve plate (3) are located the discharge gate department of disk seat (1), its characterized in that: be provided with supporting mechanism (6) on disk seat (1), supporting mechanism (6) are close to first valve plate (2) department, supporting mechanism (6) are including fixed pillar (61), fixed pillar (61) are located one side that first valve plate (2) are close to second valve plate (3), fixed pillar (61) are used for supporting first valve plate (2).

2. The double-gate airlock abrasion resistant valve with improved seal reliability of claim 1, wherein: the valve seat (1) is provided with a first yielding groove (611), and the fixed support column (61) is arranged in the first yielding groove (611) in a sliding mode.

3. The double-gate airlock abrasion resistant valve with improved seal reliability of claim 2, wherein: the supporting mechanism (6) further comprises a control assembly (62), the control assembly (62) controls the fixed supporting column (61) to slide, and the control assembly (62) comprises a control column (621) and a control rod (622);

a second yielding groove (6211) is formed in the valve seat (1), and the control column (621) is slidably arranged in the second yielding groove (6211);

the valve seat (1) is provided with an installation cavity (6221), the installation cavity (6221) is communicated with the first yielding groove (611) and the second yielding groove (6211), and the control rod (622) is rotatably arranged in the installation cavity (6221);

fixed pillar (61) and control column (621) are located the both sides of control lever (622) axis of rotation respectively, the one end of control lever (622) is passed through connecting piece (623) and is connected with fixed pillar (61), control column (621) can slide and rotate to first position to push control lever (622), works as when control lever (622) is located the first position, the one end that control lever (622) and fixed pillar (61) are connected promotes fixed pillar (61) to the second position, works as when fixed pillar (61) are located the second position, fixed pillar (61) and first valve plate (2) are close to the one side butt of second valve plate (3).

4. The double-gate airlock abrasion resistant valve with improved seal reliability of claim 3, wherein: a first sliding block (612) is arranged on the fixed supporting column (61), and a first sliding groove (613) for the first sliding block (612) to penetrate through is formed in the inner wall of the first abdicating groove (611); the control column (621) is provided with a second sliding block (6212), and the inner wall of the second abdicating groove (6211) is provided with a second sliding groove (6213) for the second sliding block (6212) to penetrate through.

5. The double-gate airlock abrasion resistant valve with improved seal reliability of claim 4, wherein: the distance between one surface, far away from the second valve plate (3), of the fixed support column (61) and one surface, close to the first valve plate (2), of the second valve plate (3) is larger than the distance between one surface, far away from the second valve plate (3), of the first valve plate (2) and one surface, close to the first valve plate (2), of the second valve plate (3); a compensation assembly (7) is arranged on the inner wall of the first sliding block (612), the compensation assembly (7) comprises an expansion spring (71), one end of the expansion spring (71) is connected with the first sliding block (612), and the other end of the expansion spring (71) is abutted against the inner wall of the first sliding groove (613); an elastic pad is arranged on the inner wall of the first yielding groove (611), and the elastic pad is connected with the inner wall of the first yielding groove (611).

6. The double-gate airlock abrasion resistant valve with improved seal reliability of claim 5, wherein: the compensation assembly (7) further comprises an expansion rod (72), one end of the expansion rod (72) is connected with the first sliding block (612), the other end of the expansion rod (72) is abutted to the inner wall of the first sliding groove (613), and the expansion spring (71) is sleeved on the expansion rod (72).

7. The double-gate airlock abrasion resistant valve with improved seal reliability of claim 4, wherein: the first slider (612) is a dovetail block, and the first runner (613) is a dovetail groove.

8. The double-gate airlock abrasion resistant valve with improved seal reliability of claim 6, wherein: the telescopic link (72) includes barrel (721) and body of rod (722), body of rod (722) slides in barrel (721), be provided with gag lever post (7221) on the week lateral wall of the body of rod (722), offer on the inner wall of barrel (721) and supply spacing groove (7222) that gag lever post (7221) slided.