阅读说明：本技术 带中置密封结构的闸阀 (Gate valve with middle sealing structure ) 是由 王跃 戴恒杰 于 2018-06-26 设计创作，主要内容包括：本发明公开了一种带中置密封结构的闸阀,包含一阀体和一阀盖,所述的阀体内设有一阀闸和一对连接筒,所述的连接筒位于所述的阀闸的两侧,所述的阀闸包含一板状的闸板,所述的闸板的顶部设有一连接螺筒,所述的闸板的中部设有一贯穿的闸孔,所述的闸孔的两端面上分别设有一环形的密封环,所述的密封环的端面上设有一环形的密封环槽,所述的密封环槽内设有一可拆卸的密封圈。当阀闸上下活动时,通过密封环与密封圈的配合,大大提高了闸板与连接筒之间的密封性,同时还有效提高了阀闸上下活动的顺滑性。(The invention discloses a gate valve with a middle-arranged sealing structure, which comprises a valve body and a valve cover, wherein a valve gate and a pair of connecting cylinders are arranged in the valve body, the connecting cylinders are positioned at two sides of the valve gate, the valve gate comprises a plate-shaped gate plate, a connecting screw cylinder is arranged at the top of the gate plate, a through gate hole is arranged in the middle of the gate plate, annular sealing rings are respectively arranged on two end surfaces of the gate hole, an annular sealing ring groove is arranged on the end surface of each sealing ring, and a detachable sealing ring is arranged in each sealing ring groove. When the valve gate moves up and down, the sealing performance between the flashboard and the connecting cylinder is greatly improved through the matching of the sealing ring and the sealing ring, and the smoothness of the up-and-down movement of the valve gate is effectively improved.)

1. The gate valve with the middle-arranged sealing structure is characterized in that the gate valve (1) with the middle-arranged sealing structure comprises a valve body (2) and a valve cover (3), a valve gate (4) and a pair of connecting cylinders (5) are arranged in the valve body (2), the connecting cylinders (5) are located on two sides of the valve gate (4), the valve gate (4) comprises a platy gate plate (41), a connecting screw cylinder (42) is arranged at the top of the gate plate (41), a through gate hole (43) is arranged in the middle of the gate plate (41), annular sealing rings (44) are respectively arranged on two end faces of the gate hole (43), an annular sealing ring groove (441) is arranged on the end face of the sealing rings (44), a detachable sealing ring (45) is arranged in the sealing ring groove (441), a plurality of protruding sealing isolation caulking grooves (442) are respectively arranged on two side walls of the sealing ring groove (441), the two outer walls of the sealing ring (45) are respectively provided with a plurality of protruding sealing embedding protrusions (451), and the sealing embedding protrusions (451) are matched with the sealing isolation embedding grooves (442).

2. The gate valve with the centrally installed seal structure of claim 1, wherein the seal ring (44) is made of teflon, and the seal ring (45) is made of rubber.

Technical Field

The invention relates to a valve, in particular to a gate valve with a middle sealing structure.

Background

After the flashboard of the existing gate valve repeatedly moves up and down, the sealing performance of the flashboard is reduced, and the reliability of the gate valve is influenced.

Disclosure of Invention

The invention mainly solves the technical problems in the prior art, and provides the gate valve with the middle sealing structure.

The technical problem of the invention is mainly solved by the following technical scheme:

a gate valve with a middle sealing structure is characterized in that the gate valve with the middle sealing structure comprises a valve body and a valve cover, a valve gate and a pair of connecting cylinders are arranged in the valve body, the connecting cylinders are positioned at two sides of the valve gate, the valve gate comprises a plate-shaped gate plate, a connecting screw cylinder is arranged at the top of the gate plate, a gate hole penetrating through the gate plate is arranged in the middle of the gate plate, two end faces of the gate hole are respectively provided with an annular sealing ring, the end face of the sealing ring is provided with an annular sealing ring groove, a detachable sealing ring is arranged in the sealing ring groove, a plurality of protruding sealing isolation caulking grooves are respectively arranged on two side walls of the sealing ring groove, the two outer walls of the sealing ring are respectively provided with a plurality of protruding sealing clamping and embedding protrusions, and the sealing clamping and embedding protrusions are matched with the sealing isolation embedding grooves.

As a preferred embodiment of the invention, the sealing ring is made of polytetrafluoroethylene, and the sealing ring is made of rubber.

The gate valve with the middle sealing structure has the following advantages: when the valve gate is used, when the valve gate moves up and down, the sealing performance between the gate plate and the connecting cylinder is greatly improved through the matching of the sealing ring and the sealing ring, and meanwhile, the smoothness of the up-and-down movement of the valve gate is effectively improved. The gate valve with the middle sealing structure is simple in structure, obvious in effect, low in cost and high in practicability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a gate valve with a mid-seal structure according to the present invention;

FIG. 2 is an exploded perspective view of the gate valve of FIG. 1 with a mid-seal configuration;

FIG. 3 is a further exploded perspective view of the gate valve of FIG. 2 with a mid-seal arrangement;

FIG. 4 is a cross-sectional view of the mid-seal ring of the gate valve with a mid-seal structure of FIG. 3;

FIG. 5 is an enlarged detail view of area A in FIG. 4;

FIG. 6 is a cross-sectional view schematically illustrating a mid-packing of the gate valve with a mid-packing structure of FIG. 3;

FIG. 7 is an enlarged detail view of the area B in FIG. 6;

wherein the content of the first and second substances,

1. a gate valve; 2. a valve body; 3. a valve cover; 4. a valve gate; 41. a shutter plate; 42. connecting the screw cylinder; 43. a gate hole; 44. a seal ring; 441. sealing the ring groove; 442. sealing the isolated caulking groove; 45. a seal ring; 451. the sealing, clamping and embedding are protruded; 5. a connecting cylinder.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.

As shown in fig. 1 to 7, the gate valve 1 with a mid-sealing structure comprises a valve body 2 and a valve cover 3, a valve gate 4 and a pair of connecting cylinders 5 are arranged in the valve body 2, the connecting cylinders 5 are located at two sides of the valve gate 4, the valve gate 4 comprises a plate-shaped gate plate 41, a connecting screw cylinder 42 is arranged at the top of the gate plate 41, a gate hole 43 penetrating through the gate plate 41 is arranged at the middle of the gate plate 41, annular sealing rings 44 are respectively arranged on two end faces of the gate hole 43, an annular sealing ring groove 441 is arranged on an end face of the sealing ring 44, a detachable sealing ring 45 is arranged in the sealing ring groove 441, a plurality of protruding sealing isolation caulking grooves 442 are respectively arranged on two side walls of the sealing ring groove 441, a plurality of protruding sealing embedding protrusions 451 are respectively arranged on two outer walls of the sealing ring 45, and the sealing embedding protrusions 451 are matched with the sealing isolation caulking grooves 442.

The sealing ring 44 is made of polytetrafluoroethylene, and the sealing ring 45 is made of rubber.

When the valve gate 4 moves up and down, the sealing performance between the gate plate 41 and the connecting cylinder 5 is greatly improved through the matching of the sealing ring 44 and the sealing ring 45, and the smoothness of the up-and-down movement of the valve gate 4 is also effectively improved.

The gate valve with the middle sealing structure is simple in structure, obvious in effect, low in cost and high in practicability.

Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.