阅读说明：本技术 一种高性能硬密度双向刀阀阀 (High-performance hard-density bidirectional knife valve ) 是由 陈华崇 陈群 金定昌 吴王伟 丁铁山 于 2020-04-25 设计创作，主要内容包括：本发明公开了一种高性能硬密度双向刀阀阀,包括阀体、阀板,支架、气动缸和阀杆,所述阀体的内部设置有硬质密封件,所述阀体的底部内表壁位于阀板的正下方开设有阶梯槽,所述阶梯槽的两侧内壁上设置有密封垫,所述阶梯槽的底部内表壁通过弹簧一连接有楔块,所述楔块的上端面设置有V型凸块。本发明中,阀板关闭过程中,V型槽与V型凸块卡合,挤压楔块向下滑动,弹簧一压缩,阀板的底端移动至阶梯槽的内部,与密封垫形成正面挤压,实现密封,阀板向上运动时,楔块在弹簧一的作用下向上滑动至与阀体的底部内表壁相齐平的位置,防止固体残留物进入阶梯槽的内部对阀体造成腐蚀,残留物在水流的带动下直接排放出阀体的内部。(The invention discloses a high-performance hard-density two-way knife valve which comprises a valve body, a valve plate, a support, a pneumatic cylinder and a valve rod, wherein a hard sealing element is arranged inside the valve body, a stepped groove is formed in the bottom inner surface wall of the valve body and is positioned right below the valve plate, sealing gaskets are arranged on the inner walls of two sides of the stepped groove, the bottom inner surface wall of the stepped groove is connected with a wedge block through a spring, and a V-shaped convex block is arranged on the upper end surface of the wedge block. In the valve plate closing process, the V-shaped groove is clamped with the V-shaped lug, the extrusion wedge block slides downwards, the spring I is compressed, the bottom end of the valve plate moves to the inside of the stepped groove to form front extrusion with the sealing gasket, sealing is achieved, when the valve plate moves upwards, the wedge block slides upwards to a position flush with the inner wall of the bottom of the valve body under the action of the spring I, solid residues are prevented from entering the inside of the stepped groove to corrode the valve body, and the residues are directly discharged out of the inside of the valve body under the driving of water flow.)

1. The utility model provides a two-way sword valve of hard density of high performance, includes valve body (1), valve plate (2), support (3), pneumatic cylinder (4) and valve rod (5), its characterized in that, the inside of valve body (1) is provided with stereoplasm sealing member (18), table wall is located valve plate (2) in the bottom of valve body (1) and has seted up ladder groove (14) under, be provided with sealed pad (13) on the both sides inner wall of ladder groove (14), table wall is connected with voussoir (15) through spring (17) in the bottom of ladder groove (14), the up end of voussoir (15) is provided with V type lug (16), V type groove (12) with V type lug (16) cooperation block are seted up to the lower terminal surface of valve plate (2).

2. The high-performance hard-density bidirectional knife valve according to claim 1, characterized in that an expansion groove (10) and a mounting groove (7) located below the expansion groove (10) are formed in the side wall of the joint of the top of the valve body (1) and the valve plate (2), a rubber ring (8) is arranged inside the mounting groove (7), and a sealing plate (9) is arranged on the side wall of the rubber ring (8).

3. A high performance, hard density, two way knife valve according to claim 2, characterized in that the rubber ring (8) is internally provided with a second spring (11).

4. A high-performance hard-density two-way knife valve according to claim 1, characterized in that the bent part of the top end of the sealing plate (9) is fixedly connected with the bottom inner surface wall of the expansion groove (10) through sealing filler.

5. A high performance hard density bi-directional knife valve according to claim 4 characterized in that the sealing plate (9) is a hard rubber plate.

6. A high performance hard density bi-directional knife valve according to claim 1 characterized by that the outside of the valve stem (5) is provided with a sealing block (6).

Technical Field

The invention relates to the technical field of knife valve valves, in particular to a high-performance hard-density bidirectional knife valve.

Background

The knife valve is also called knife valve, slurry valve, the slurry valve, its opening and closing part is the valve plate, the movement direction of the valve plate is perpendicular to fluid direction, cut off the medium by the cutting edge-shaped valve plate that can cut the fibrous material, the valve plate has two sealed surfaces, two sealed surfaces of the most common model valve plate valve form wedge, the wedge angle is different with the valve parameter, usually 5 degrees, the valve plate of the knife valve of wedge type can be made into an entirety, called rigid valve plate; the valve plate can also be made into a valve plate capable of generating micro deformation so as to improve the manufacturability and make up the deviation of the angle of the sealing surface in the processing process, and the valve plate is called an elastic valve plate.

Firstly, in order to be matched with a valve plate for sealing, the valve body of the existing high-performance hard-density two-way sealing valve is usually provided with a groove which is correspondingly matched with the valve plate at the bottom of the valve body, and when the valve body is used, some residues can remain in the groove, so that the valve body can be corroded for a long time, and the service life of the valve body is shortened; secondly, the valve plate of the two-way sword valve of current high performance hard density is at the lift in-process, and the contact surface of the lateral wall of valve plate and valve body closely laminates, because valve plate and valve body material are all harder for the valve plate can produce the great wearing and tearing of intensity at the lift in-process, has reduced the leakproofness of valve sword valve.

Disclosure of Invention

The invention aims to: the high-performance hard-density bidirectional knife valve is provided for solving the problem that a groove at the bottom of the knife valve is easy to retain residues.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a two-way sword valve of hard density of high performance, includes valve body, valve plate, support, pneumatic cylinder and valve rod, the inside of valve body is provided with the stereoplasm sealing member, the table wall is located the valve plate in the bottom of valve body and has seted up the ladder groove under, be provided with sealed the pad on the both sides inner wall in ladder groove, the table wall is connected with the voussoir through spring coupling in the bottom in ladder groove, the up end of voussoir is provided with V type lug, the lower terminal surface of valve plate seted up with the V type groove of V type lug cooperation block.

As a further description of the above technical solution:

the valve body top and the valve plate junction lateral wall on seted up the expansion groove and be located the mounting groove of expansion groove below, the inside of mounting groove is provided with the rubber circle, be provided with the closing plate on the lateral wall of rubber circle.

As a further description of the above technical solution:

and a second spring is arranged in the rubber ring.

As a further description of the above technical solution:

the bending part at the top end of the sealing plate is fixedly connected with the inner surface wall at the bottom of the expansion groove through sealing filler.

As a further description of the above technical solution:

the sealing plate is a hard rubber plate.

As a further description of the above technical solution:

and a sealing block is arranged outside the valve rod.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, through the arrangement of the wedge block, the first spring and the sealing gasket, in the closing process of the valve plate, the V-shaped groove is clamped with the V-shaped lug, the extrusion wedge block slides downwards, the first spring compresses, the bottom end of the valve plate moves to the inside of the stepped groove to form front extrusion with the sealing gasket, so that sealing is realized, when the valve plate moves upwards, the wedge block slides upwards to a position flush with the inner surface wall of the bottom of the valve body under the action of the first spring, so that solid residues are prevented from entering the inside of the stepped groove to corrode the valve body, and the residues are directly discharged out of the inside of the valve body under the.

2. According to the invention, the expansion groove and the mounting groove are arranged, the valve plate is driven by the pneumatic cylinder to drive the valve plate to move downwards through the valve rod, in the downward movement process of the valve plate, the expansion groove and the mounting groove reduce the friction area between the valve plate and the valve body, the spring generates outward elastic force to the two pairs of rubber rings, and the sealing plate is subjected to elastic extrusion force of the rubber rings, so that the sealing plate generates clamping force to the valve plate, and the sealing plate is more stable in the movement process.

Drawings

FIG. 1 is a schematic structural diagram of a high performance hard density bi-directional knife valve according to the present invention in a front view;

FIG. 2 is a schematic cross-sectional side view of a high performance, hard density bi-directional knife valve according to the present invention;

FIG. 3 is an enlarged schematic view of part A of a high performance, hard density, bi-directional knife valve according to the present invention;

fig. 4 is an enlarged structural diagram of a portion B of a high-performance hard-density bidirectional knife valve according to the present invention.

Illustration of the drawings:

1. a valve body; 2. a valve plate; 3. a support; 4. a pneumatic cylinder; 5. a valve stem; 6. a sealing block; 7. mounting grooves; 8. a rubber ring; 9. a sealing plate; 10. an expansion slot; 11. a second spring; 12. a V-shaped groove; 13. a gasket; 14. a stepped groove; 15. a wedge block; 16. a V-shaped bump; 17. a first spring; 18. a hard seal.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.