CN218625480U

CN218625480U - Penetration type knife gate valve

Info

Publication number: CN218625480U
Application number: CN202223214072.5U
Authority: CN
Inventors: 魏明珍; 史庆泰; 杨玲玲; 魏明武
Original assignee: Quanhuiyou Fluid Technology Hubei Co ltd
Current assignee: Quanhuiyou Fluid Technology Hubei Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-03-14
Anticipated expiration: 2032-11-28

Abstract

The utility model provides a penetrating type knife gate valve, which comprises a valve body, be equipped with drive assembly on valve plate and the valve body in the valve body, be equipped with first disk seat and second disk seat in the valve body, one side that the valve plate was kept away from to first disk seat and one side that the valve plate was kept away from to the second disk seat are equipped with spacing hole respectively, be equipped with the through-hole on the valve body, spacing downthehole elastic component and the through-hole adjusting part that is equipped with, adjusting part includes adjust knob, adjust pole and clamp plate, adjust knob sets up the one end at the regulation pole, it is equipped with on screw thread portion and the clamp plate with screw thread portion matched with screw hole to adjust the pole, clamp plate and elastic component butt, spacing downthehole guide bar that still is equipped with, the axial of guide bar is equipped with on parallel to the axial and the clamp plate of regulation pole with guide bar matched with guiding hole. The utility model provides a technical problem that sealing performance descends after penetrating knife gate valve uses for a long time, produced the technological effect that makes penetrating knife gate valve keep sealed, do benefit to the long-term stable work of penetrating knife gate valve for a long time.

Description

Penetration type knife gate valve

Technical Field

The utility model relates to a knife gate valve technical field especially relates to a penetrating type knife gate valve.

Background

A penetration knife gate valve, also known as a manual gate valve, is a valve with a gate plate and a valve seat which are always in close contact and sealed, and the principle is that a round opening with the same size as the drift diameter is formed in the gate plate, the round opening on the gate plate is completely separated from and matched with the drift diameter through opening and closing of the gate plate, and the penetration knife gate valve is suitable for conveying systems of various media such as sewage, powder particles, paper pulp, ore pulp, coal slag and the like.

The utility model discloses a chinese utility model patent that the bulletin number is CN214146662U discloses a two-way hard seal knife gate valve of penetrating forging steel, including the valve body, be equipped with the valve pocket in the valve body, be equipped with the medium admission passageway and the medium outflow passageway that switch on with the valve pocket on the valve body, be equipped with the valve plate in the valve pocket, the valve body top is equipped with the valve rod of being connected with the valve plate and the executor of being connected with the valve rod, the inner wall of valve pocket is equipped with the disk seat, the surface of disk seat is equipped with the valve seat lid including wrapping up the disk seat, the valve seat lid is connected with the valve body, be equipped with dustproof subassembly between disk seat lid and the disk seat, the internal surface of valve seat lid is equipped with resistant scouring layer. Dustproof subassembly is equipped with the seal groove including last O shape circle and lower O shape circle on the terminal surface of disk seat towards the valve intracavity, and lower O shape circle is established and is contradicted sealedly with the disk seat lid in the seal groove, and the lateral surface of disk seat is equipped with the second seal groove, goes up the O shape circle and locates in the second seal groove and contradict sealedly with the disk seat lid. The end face of the valve body facing the valve seat is provided with a notch, the valve seat is provided with a lug arranged in the notch, the lug and the notch form step fit, the valve seat is provided with a third sealing groove, and a sealing ring which is in butt sealing with the valve body is arranged in the third sealing groove.

Above-mentioned utility model discloses a two-way hard seal knife gate valve of penetrating forged steel adopts the sealing washer sealed between with valve body and disk seat, because long-time use back sealing washer can be ageing to lose elasticity, and ageing sealing washer can produce moulding deformation and lead to the sealing performance to descend. And the flashboard and the valve body rub each other to produce wearing and tearing at the in-process of action of current penetrating type knife gate valve, can produce the clearance between long-term back of using between flashboard and the valve body, and then cause the disk seat to produce and leak and influence the normal operating of knife gate valve. Namely, the sealing performance of the existing penetration type knife gate valve is reduced after the existing penetration type knife gate valve is used for a long time, and the existing penetration type knife gate valve needs to be stopped for maintenance or replacement, so that the normal production is influenced.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides a penetrating knife gate valve, it has solved the problem that the sealing performance descends after the penetrating knife gate valve that exists uses for a long time among the prior art.

According to the utility model discloses an embodiment, a penetrating type knife gate valve, which comprises a valve body, be equipped with the valve plate in the valve body just be equipped with on the valve body with the drive assembly that the valve plate transmission is connected, be equipped with first disk seat and second disk seat in the valve body, first disk seat reaches the second valve seat for the valve plate symmetry sets up, first disk seat is kept away from one side of valve plate reaches the second valve seat is kept away from one side of valve plate is equipped with spacing hole respectively, be equipped with on the valve body with the through-hole that spacing hole aligns, spacing downthehole elastic component that is equipped with just be equipped with adjusting part in the through-hole, adjusting part includes adjust knob, regulation pole and clamp plate, adjust knob sets up adjust the one end of pole, it has screw thread portion just to adjust the pole be equipped with on the clamp plate with screw thread portion matched with screw hole, the clamp plate with the elastic component butt, still be equipped with the guide bar in the spacing hole, the axial of guide bar with adjust the axial direction parallel just be equipped with on the clamp plate with guide bar matched with guiding hole.

Furthermore, the adjusting rod is sleeved with a limiting block, a stop block is further arranged in the through hole, and two ends of the stop block are respectively abutted to the inner wall of the through hole and the limiting block.

Furthermore, the inner peripheral wall of the through hole is provided with a convex step part, and one end of the stop block, which is far away from the limit block, is abutted against the step part.

Furthermore, still be equipped with the lid that covers on the valve body the through-hole opening part, the lid is close to the stopper sets up just be equipped with on the lid and supply adjust the via hole that the pole passed.

Furthermore, the pressing plate is circular, the cross section of the through hole is covered by the pressing plate, and the guide hole is eccentrically arranged relative to the circle center of the pressing plate.

Furthermore, the number of the guide rods is at least two, and the guide rods are arranged at intervals along the circumferential direction of the adjusting rod.

Furthermore, a first annular groove is formed in one surface, close to the valve plate, of the first valve seat and one surface, close to the valve plate, of the second valve seat respectively, and a first sealing ring is arranged in the annular groove.

Furthermore, a second annular groove is formed in the peripheral wall of the first valve seat and the peripheral wall of the second valve seat respectively, and a second sealing ring is arranged in the second annular groove.

Furthermore, the inner peripheral walls of the first valve seat and the second valve seat are respectively provided with a third annular groove, and a third sealing ring is arranged in the third annular groove.

Furthermore, the edges of one surface, close to the valve plate, of the first valve seat and the second valve seat are respectively provided with a tangent plane, and an included angle between each tangent plane and the horizontal plane is an acute angle.

Compared with the prior art, the utility model discloses following beneficial effect has: the technical effect that the sealing performance of the penetration knife gate valve is reduced after the penetration knife gate valve is used for a long time is achieved, and the technical effect that the sealing performance of the penetration knife gate valve is kept for a long time and the penetration knife gate valve is beneficial to stable work for a long time is achieved.

Drawings

Fig. 1 is a schematic structural view of a penetration type knife gate valve according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a piercing knife gate valve according to an embodiment of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is a cross-sectional view of a first valve seat of a penetration type knife gate valve according to an embodiment of the present invention.

In the above drawings: 1. a valve body; 11. a cover body; 2. a valve plate; 3. a drive assembly; 4. a first valve seat; 41. a first annular groove; 42. a first seal ring; 43. a second annular groove; 44. a second seal ring; 45. a third annular groove; 46. a third seal ring; 47. cutting into noodles; 5. a second valve seat; 6. a limiting hole; 61. an elastic member; 62. a guide bar; 7. a through hole; 71. a stopper; 72. a step portion; 8. an adjustment assembly; 81. adjusting a knob; 82. adjusting a rod; 83. pressing a plate; 84. and a limiting block.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1 to 4, an embodiment of the present invention provides a penetration knife gate valve, which is installed in a conveying system for media such as sewage, powder particles, paper pulp, ore pulp, coal slag, etc. for controlling the on-off of the conveying system.

As shown in fig. 1 and 2, the penetration knife gate valve includes a valve body 1, the valve body 1 has a channel for medium to flow, a movable valve plate 2 is disposed in the valve body 1, a driving assembly 3 in transmission connection with the valve plate 2 is disposed on the top of the valve body 1, via holes and blind holes are disposed on the valve plate 2 at intervals along a vertical direction, when the valve plate 2 moves under the driving of the driving assembly 3 until the via holes are aligned with the channel, the penetration knife gate valve is opened, medium in a conveying system can pass through the valve body 1, and when the valve plate 2 moves under the driving of the driving assembly 3 until the blind holes are aligned with the channel, the valve plate 2 blocks the flow of the medium in the conveying system.

Referring to fig. 2 and 3, a first valve seat 4 and a second valve seat 5 are disposed in the valve body 1, the first valve seat 4 and the second valve seat 5 are symmetrically disposed with respect to the valve plate 2, the first valve seat 4 and the second valve seat 5 are respectively attached to two opposite sides of the valve plate 2, a limiting hole 6 is disposed on one side of the first valve seat 4 away from the valve plate 2 and one side of the second valve seat 5 away from the valve plate 2, a through hole 7 aligned with the limiting hole 6 is disposed on the valve body 1, an elastic member 61 is disposed in the limiting hole 6, an adjusting member 8 for driving the elastic member 61 to abut against the first valve seat 4 or the second valve seat 5 is disposed in the through hole 7, the adjusting member 8 includes an adjusting knob 81, an adjusting rod 82 and a pressing plate 83, one end of the adjusting rod 82, which extends into the limiting hole 6, the other end of the adjusting rod 82 extends out of the through hole 7, the adjusting knob 81 is disposed on one end of the adjusting rod 82, which extends out of the through hole 7, and is fixedly connected to the adjusting rod 82, one end of the adjusting rod 82, a screw thread portion 83 which extends into the limiting hole 6, and a guide rod 62 which is disposed in the valve seat 4, and the guide rod 62 of the pressing plate 83 which is disposed in the guide rod 62, and the guide rod 62 are parallel to the guide rod 62, and the guide rod 83, and the guide rod 62.

Specifically, the pressing plate 83 abuts against the elastic member 61 and compresses the elastic member 61, the elastic force generated by the elastic member 61 drives the first valve seat 4/the second valve seat 5 to be tightly attached to the valve plate 2, so that the penetration type knife gate valve is kept sealed, after a gap is generated between the valve plate 2 and the first valve seat 4/the second valve seat 5 due to abrasion of the valve plate 2, the first valve seat 4 or the second valve seat 5 in the use process of the penetration type knife gate valve, the adjusting rod 82 is driven to rotate by operating the adjusting knob 81, that is, the pressing plate 83 is driven to move along the axial direction of the adjusting rod 82 through the matching of the threaded portion and the threaded hole, when the pressing plate 83 moves towards the direction close to the first valve seat 4/the second valve seat 5, the elastic member 61 is further compressed, so that the elastic member 61 pushes the abraded first valve seat 4/the second valve seat 5 to be close to the valve plate 2, and the elastic force generated after the elastic member 61 is compressed is increased to ensure that the first valve seat 4/the second valve seat 5 and the valve seat 4/the valve plate 2 and the valve plate 2 are kept tightly attached to facilitate long-term operation of the penetration type knife gate valve.

Referring to fig. 3, in order to keep the position of the adjusting rod 82 in the through hole 7 stable, a limiting block 84 is sleeved on the adjusting rod 82, the limiting block 84 is fixedly connected with the adjusting rod 82, a stopper 71 is fixed on the inner circumferential wall of the through hole 7, and two ends of the stopper 71 are respectively abutted against the inner wall of the through hole 7 and the limiting block 84 to limit the limiting block 84, so that the position of the limiting block 84 in the through hole 7 is kept stable, and the limiting block 84 synchronously rotates when the adjusting knob 81 is operated to drive the adjusting rod 82 to rotate.

In detail, still be equipped with convex step portion 72 on the internal perisporium of through-hole 7, the dog 71 is kept away from the one end of stopper 84 with step portion 72 butt, dog 71 with step portion 72 bonds in order to incite somebody to action dog 71 is fixed in the through-hole 7, just still be equipped with the cover on the valve body 1 the lid 11 of through-hole 7 opening part, lid 11 is close to stopper 84 is kept away from the one side of dog 71 and with valve body 1 threaded connection, just be equipped with the confession on the lid 11 the through-hole 7 that pole 82 passed is adjusted to the prevention stopper 84 follows drop in the through-hole 7 and make stopper 84 can rotate in a flexible way in the through-hole 7.

As shown in fig. 3, in the present embodiment, the pressing plate 83 is circular, the pressing plate 83 covers the cross section of the through hole 7, and the guiding hole is eccentrically disposed with respect to the center of the pressing plate 83, so as to prevent the pressing plate 83 from rotating with the adjusting rod 82. The number of the guide rods 62 is two, and the two guide rods 62 are arranged along the circumferential direction of the adjusting rods 82 at intervals, so that the pressing plate 83 is prevented from inclining in the action process, and meanwhile, one ends of the two adjusting rods 82 far away from the limiting hole 6 are respectively fixedly connected with the stop block 71 to fix the positions of the adjusting rods 82.

As shown in fig. 3 and 4, in order to further improve the sealing performance of the penetration type knife gate valve, first annular grooves 41 are respectively formed on the surfaces of the first valve seat 4 and the second valve seat 5, which are close to the valve plate 2, first sealing rings 42 are arranged in the annular grooves, the first sealing rings 42 are used for preventing the leakage of media passing through the penetration type knife gate valve, and when the first sealing rings 42 are aged after long-term use, the adjusting assembly 8 can drive the first valve seat 4/the second valve seat 5 to press the first sealing rings 42, so that the sealing effect of the first sealing rings 42 is maintained.

Optionally, the outer peripheral walls of the first valve seat 4 and the second valve seat 5 are respectively provided with a second annular groove 43, a second sealing ring 44 is arranged in the second annular groove 43, the inner peripheral walls of the first valve seat 4 and the second valve seat 5 are respectively provided with a third annular groove 45, a third sealing ring 46 is arranged in the third annular groove 45, and the second sealing ring 44 and the third sealing ring 46 are arranged to prevent a medium from entering the valve body 1 and the first valve seat 4 or between the second valve seat 5.

Referring to fig. 2 and 4, a tangent plane 47 is respectively disposed on one surface of each of the first valve seat 4 and the second valve seat 5, which is close to the valve plate 2, and an included angle between the tangent plane 47 and the horizontal plane is an acute angle, so that the valve plate 2 can move between the first valve seat 4 and the second valve seat 5, and meanwhile, the valve plate 2 can effectively cut the soft and hard impurities remaining in the channel during the moving process, so as to protect the valve plate 2, the first valve seat 4, and the second valve seat 5, and prolong the service life of the penetrating knife gate valve.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a penetrating type knife gate valve, includes the valve body, be equipped with the valve plate in the valve body just be equipped with on the valve body with the drive assembly that the valve plate transmission is connected, its characterized in that: be equipped with first disk seat and second disk seat in the valve body, first disk seat reaches the second valve seat for the valve plate symmetry sets up, first disk seat is kept away from one side of valve plate reaches the second valve seat is kept away from one side of valve plate is equipped with spacing hole respectively, be equipped with on the valve body with the through-hole that spacing hole aligns, spacing downthehole elastic component just be equipped with adjusting part in the through-hole, adjusting part includes adjust knob, regulation pole and clamp plate, adjust knob sets up the one end of pole, it has screw thread portion just to adjust the pole be equipped with on the clamp plate with screw thread portion matched with screw hole, the clamp plate with the elastic component butt, spacing downthehole guide bar that still is equipped with, the axial of guide bar with adjust the axial direction parallel of pole just be equipped with on the clamp plate with guide bar matched with guiding hole.

2. A piercing knife gate valve as claimed in claim 1, wherein: the adjusting rod is sleeved with a limiting block, a stop block is further arranged in the through hole, and two ends of the stop block are respectively abutted to the inner wall of the through hole and the limiting block.

3. A piercing knife gate valve as claimed in claim 2, wherein: the inner peripheral wall of the through hole is provided with a convex step part, and one end of the stop block, far away from the limiting block, is abutted against the step part.

4. A piercing knife gate valve as claimed in claim 2, wherein: the valve body is further provided with a cover body covering the opening of the through hole, the cover body is close to the limiting block and is provided with a through hole for the adjusting rod to pass through.

5. A piercing knife gate valve as claimed in claim 1, wherein: the pressing plate is circular, the cross section of the through hole is covered by the pressing plate, and the guide hole is eccentrically arranged relative to the circle center of the pressing plate.

6. A piercing knife gate valve as claimed in claim 1, wherein: the number of the guide rods is at least two, and the guide rods are arranged at intervals along the circumferential direction of the adjusting rod.

7. A piercing knife gate valve as claimed in claim 1, wherein: first annular grooves are formed in the surfaces, close to the valve plate, of the first valve seat and the second valve seat respectively, and first sealing rings are arranged in the annular grooves.

8. A piercing knife gate valve as claimed in claim 1, wherein: and second annular grooves are respectively formed in the peripheral walls of the first valve seat and the second valve seat, and second sealing rings are arranged in the second annular grooves.

9. A piercing knife gate valve as claimed in claim 1, wherein: and third annular grooves are respectively formed in the inner peripheral walls of the first valve seat and the second valve seat, and third sealing rings are arranged in the third annular grooves.

10. A piercing knife gate valve as claimed in claim 1, wherein: the edges of one surfaces, close to the valve plate, of the first valve seat and the second valve seat are respectively provided with a tangent plane, and the included angle between the tangent plane and the horizontal plane is an acute angle.