CN215720936U

CN215720936U - Novel high-sealing parallel gate valve

Info

Publication number: CN215720936U
Application number: CN202122196297.1U
Authority: CN
Inventors: 项勇; 袁勇刚; 郑�勋; 郑炜
Original assignee: Wenzhou Daan Instrument Equipment Co ltd
Current assignee: Wenzhou Daan Instrument Equipment Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-01
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a novel high-sealing parallel gate valve, which comprises a valve body, a valve cover, a left valve seat, a right valve seat, a valve rod and a valve plate assembly, wherein the valve plate assembly comprises a left valve plate, a positioning base plate and a right valve plate, a hard alloy reinforcing plate is fixedly welded on the right end surface of the left valve plate, a plurality of positioning shaft holes are transversely formed in the hard alloy reinforcing plate, a rubber positioning layer is fixedly bonded between the right end surface of the hard alloy reinforcing plate and the left end surface of the positioning base plate, a stainless steel spring is arranged in each spring through hole of the rubber positioning layer, a transverse through hole is formed in the rubber positioning layer at the position aligned with each positioning shaft hole, a stainless steel positioning rod is welded at the position aligned with each transverse through hole on the left end surface of the positioning base plate, and the left end of each stainless steel positioning rod is inserted into the aligned positioning shaft hole after passing through the aligned transverse through hole. Above-mentioned technical scheme, structural design is reasonable, sealed effectual, reliable operation, valve plate and the difficult pulling of disk seat, long service life and practicality are good.

Description

Novel high-sealing parallel gate valve

Technical Field

The utility model relates to the technical field of gate valves, in particular to a novel high-sealing parallel gate valve.

Background

A gate valve is a valve commonly used in a pipeline system, and is used for connecting or disconnecting a medium in the pipeline system. The opening and closing piece of the gate valve is a valve plate, and at present, the gate valve with the mature technology in China is a wedge-shaped gate valve. When the wedge-shaped gate valve works in a high-temperature and high-pressure environment, the wedge-shaped gate valve is easy to block, so that a parallel gate valve is generally selected for gate valves applied to the high-temperature and high-pressure environment at home and abroad, for example, a high-temperature and high-pressure emptying gate valve used on an oil refining hydrogenation device and a high-temperature and high-pressure steam switch gate valve of a power station are imported parallel gate valves. The middle spring of loading in the middle of two valve plates of parallel gate valve constitutes the valve plate subassembly: on one hand, the sealing effect can be strengthened by utilizing the pressure of a high-pressure medium, and the sealing effect is better when the pressure is higher; on the other hand because the existence of middle spring, under the high temperature condition, the dead phenomenon of card can not appear in the valve plate subassembly. However, two valve plates and a valve plate sleeve of the existing parallel gate valve are mostly in step fit, when the valve plate assembly runs to a full-open position, the two valve plates can open due to the action of an intermediate spring, the two valve plates open at a certain angle and are in an inverted splayed shape, and when the valve plate assembly is closed downwards, the valve plates and the valve seats can be cut downwards, so that the valve plates and the valve seats are damaged by pulling.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the novel high-sealing parallel gate valve which is reasonable in structural design, good in sealing effect, reliable in work, long in service life and good in practicability, and a valve plate and a valve seat are not easy to pull.

In order to achieve the purpose, the utility model provides the following technical scheme: a novel high-sealing parallel gate valve comprises a valve body, a valve cover, a left valve seat, a right valve seat, a valve rod and a valve plate assembly, wherein a medium inflow channel, a valve cavity and a medium outflow channel are arranged in the valve body, the left valve seat is fixedly arranged at the right end of the medium inflow channel, the right valve seat is fixedly arranged at the left end of the medium outflow channel, the valve plate assembly is arranged in the valve cavity, the valve plate assembly comprises a left valve plate, a positioning base plate and a right valve plate, a hard alloy reinforcing plate is fixedly welded on the right end surface of the left valve plate, a plurality of positioning shaft holes are transversely arranged on the hard alloy reinforcing plate, a rubber positioning layer is fixedly bonded between the right end surface of the hard alloy reinforcing plate and the left end surface of the positioning base plate, a plurality of spring through holes are transversely arranged in the rubber positioning layer, a stainless steel spring is arranged in each spring through hole, and a transverse through hole is arranged at the position of the rubber positioning layer, which is aligned to each positioning shaft hole, a stainless steel positioning rod is welded at the position, aligned with each transverse through hole, of the left end face of the positioning substrate, and the left end of each stainless steel positioning rod penetrates through the aligned transverse through hole and then is inserted into the aligned positioning shaft hole.

The utility model is further configured to: the left end face of the right valve plate is welded and fixed with the right end face of the positioning base plate, the right end face of the right valve plate is fixedly provided with a silicon rubber sealing layer, the local position of the right end face of the silicon rubber sealing layer and the left end face of the right valve seat are compressed to form sealing, and the right valve seat is made of hard alloy materials.

The utility model is further configured to: the left valve seat is made of silicon rubber materials, and the right end face of the left valve seat and the local position of the left end face of the left valve plate are compressed to form sealing.

The utility model is further configured to: the left valve plate, the positioning substrate, the right valve plate and the valve rod are all made of stainless steel materials, the left valve plate and the right valve plate are parallel to each other, and the positioning substrate is welded and fixed with the lower end of the valve rod or is connected and fixed through bolts.

The utility model is further configured to: the valve cover is fixedly locked with the upper end of the valve body through bolts, a valve rod through hole is formed in the middle of the valve cover, and the valve rod penetrates into the valve cavity from the valve rod through hole.

The utility model is further configured to: the left valve seat is fixedly bonded with the inner wall surface of the valve body or fixedly locked through a screw, and the right valve seat is fixedly welded with the inner wall surface of the valve body.

The utility model has the advantages that: compared with the prior art, the structure of the utility model is more reasonable, a stainless steel positioning rod is welded at the position of the left end surface of the positioning base plate, which is aligned with each transverse through hole, the left end of each stainless steel positioning rod passes through the aligned transverse through hole and then is inserted into the aligned positioning shaft hole, the hard alloy reinforcing plate not only reinforces the left valve plate, but also positions the left valve plate through the stainless steel positioning rod, the right valve plate and the positioning base plate are fixedly arranged, the left valve plate and the right valve plate can not generate the inverted splayed condition, the left valve plate is made of stainless steel materials, the left valve seat is made of silicon rubber materials, the left valve plate and the left valve seat adopt a sealing mode of combining soft and hard materials, the left valve plate is not easy to scratch, and the sealing performance is good; the right end face of the right valve plate is provided with a silicone rubber sealing layer, the right valve seat is made of hard alloy materials, the right valve plate is tightly pressed and sealed with the right valve seat through the silicone rubber sealing layer, the sealing mode is also a sealing mode combining soft and hard materials, and parts are not easy to be pulled in the use process; the valve plate has the advantages of reasonable structural design, good sealing effect, reliable work, difficult strain of the valve plate and the valve seat, long service life and good practicability.

The utility model is further described with reference to the drawings and the specific embodiments in the following description.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of section I of FIG. 1;

FIG. 3 is a schematic structural view of a valve plate assembly according to an embodiment of the present invention.

Detailed Description

In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, 2 and 3, the utility model discloses a novel high-sealing parallel gate valve, which comprises a valve body 1, a valve cover 2, a left valve seat 3, a right valve seat 4, a valve rod 5 and a valve plate assembly 6, wherein a medium inflow channel 11, a valve cavity 12 and a medium outflow channel 13 are arranged in the valve body 1, the left valve seat 3 is fixedly arranged at the right end of the medium inflow channel 11, the right valve seat 4 is fixedly arranged at the left end of the medium outflow channel 13, the valve plate assembly 6 is arranged in the valve cavity 12, the valve plate assembly 6 comprises a left valve plate 61, a positioning base plate 62 and a right valve plate 63, a hard alloy reinforcing plate 64 is fixedly welded on the right end surface of the left valve plate 61, a plurality of positioning shaft holes 641 are transversely arranged on the hard alloy reinforcing plate 64, and a rubber positioning layer 65 is fixedly bonded between the right end surface of the hard alloy reinforcing plate 64 and the left end surface of the positioning base plate 62, transversely be provided with a plurality of spring through-hole 651 in the rubber location layer 65, all be provided with a stainless steel spring 66 in every spring through-hole 651, just rubber location layer 65 is aimed at every location axle hole position and all is provided with a horizontal through-hole 652, every horizontal through-hole position is aimed at to the left end face of location base plate 62 all the welding has a stainless steel locating lever 67, and the left end of every stainless steel locating lever 67 inserts in the location axle hole 641 of alignment after passing the horizontal through-hole of alignment.

Preferably, the medium inflow channel 11, the valve cavity 12 and the medium outflow channel 13 are communicated with each other, the number of the spring through holes 651 and the number of the stainless steel springs 66 are more than 4, the left end of each stainless steel spring 66 is welded and fixed with the right end face of the hard alloy reinforcing plate 64, and the right end of each stainless steel spring 66 is welded and fixed with the left end face of the positioning substrate 62; the number of the positioning shaft holes 641 and the number of the transverse through holes 652 are more than 2, and the number of the stainless steel positioning rods 67 is more than 2.

In order to make the structure of the present invention more reasonable, preferably, the left end surface of the right valve plate 63 is welded and fixed with the right end surface of the positioning substrate 62, the right end surface of the right valve plate 63 is fixedly provided with a silicone rubber sealing layer 68, a local position of the right end surface of the silicone rubber sealing layer 68 is pressed against the left end surface of the right valve seat 4 to form a seal, and the right valve seat 4 is made of a hard alloy material.

The left valve seat 3 is made of a silicon rubber material, and the right end face of the left valve seat 3 and the left end face of the left valve plate 61 are compressed to form sealing.

The left valve plate 61, the positioning base plate 62, the right valve plate 63 and the valve rod 5 are all made of stainless steel materials, the left valve plate 61 and the right valve plate 63 are parallel to each other, and the positioning base plate 62 is fixed with the lower end of the valve rod 5 in a welding mode or in a bolt connection mode.

The valve cover 2 is locked and fixed with the upper end of the valve body 1 through bolts, a valve rod through hole is formed in the middle of the valve cover 2, and the valve rod 5 penetrates into the valve cavity 12 from the valve rod through hole.

The left valve seat 3 is fixedly bonded with the inner wall surface of the valve body 1 or fixedly locked through a screw, and the right valve seat 4 is fixedly welded with the inner wall surface of the valve body 1.

In practical application, a stainless steel positioning rod is welded at the position, aligned with each transverse through hole, of the left end face of the positioning substrate, the left end of each stainless steel positioning rod penetrates through the aligned transverse through hole and then is inserted into the aligned positioning shaft hole, the hard alloy reinforcing plate not only has a reinforcing effect on the left valve plate, but also has a positioning effect on the left valve plate through the stainless steel positioning rod, the right valve plate and the positioning substrate are fixedly arranged, the left valve plate and the right valve plate cannot have the inverted splayed condition, the left valve plate is made of stainless steel materials, the left valve seat is made of silicon rubber materials, the left valve plate and the left valve seat are sealed in a soft and hard material combination mode, scratch is not prone, and sealing performance is good; the right end face of the right valve plate is provided with a silicone rubber sealing layer, the right valve seat is made of hard alloy materials, the right valve plate is tightly pressed and sealed with the right valve seat through the silicone rubber sealing layer, the sealing mode is also a sealing mode combining soft and hard materials, and parts are not easy to be pulled in the use process; the valve plate has the advantages of reasonable structural design, good sealing effect, reliable work, difficult strain of the valve plate and the valve seat, long service life and good practicability.

The above embodiments are only for further illustration of the present invention, and should not be construed as limiting the scope of the present invention, and the technical engineers in the art can make insubstantial modifications and adaptations of the present invention based on the above disclosure and disclosure of the utility model.

Claims

1. The utility model provides a novel high sealed parallel gate valve, includes valve body (1), valve gap (2), left disk seat (3), right disk seat (4), valve rod (5) and valve plate subassembly (6), be provided with medium inflow passageway (11), valve pocket (12) and medium outflow passageway (13) in valve body (1), left side disk seat (3) are fixed to be set up at medium inflow passageway (11) right-hand member, and right side disk seat (4) are fixed to be set up at medium outflow passageway (13) left end, valve plate subassembly (6) set up in valve pocket (12), its characterized in that: the valve plate assembly (6) comprises a left valve plate (61), a positioning base plate (62) and a right valve plate (63), a hard alloy reinforcing plate (64) is fixedly welded on the right end face of the left valve plate (61), a plurality of positioning shaft holes (641) are transversely formed in the hard alloy reinforcing plate (64), a rubber positioning layer (65) is fixedly bonded between the right end face of the hard alloy reinforcing plate (64) and the left end face of the positioning base plate (62), a plurality of spring through holes (651) are transversely formed in the rubber positioning layer (65), a stainless steel spring (66) is arranged in each spring through hole (651), a transverse through hole (652) is formed in the position, aligned to each positioning shaft hole, of the rubber positioning layer (65), a stainless steel positioning rod (67) is welded at the position, aligned to each transverse through hole, of the left end face of the positioning base plate (62), the left end of each stainless steel positioning rod (67) passes through the aligned transverse through hole and then is inserted into the aligned positioning shaft hole (641).

2. The novel high seal parallel gate valve of claim 1, wherein: the left end face of right side valve plate (63) and the right-hand member face welded fastening of location base plate (62), the right-hand member face of right side valve plate (63) is gone up the fixed silicon rubber sealing layer (68) that is provided with, and constitutes sealedly after the right-hand member face local position of silicon rubber sealing layer (68) and the left end face of right valve seat (4) compress tightly, right valve seat (4) are made by carbide material.

3. The novel high seal parallel gate valve of claim 2, wherein: the left valve seat (3) is made of a silicon rubber material, and the right end face of the left valve seat (3) and the local position of the left end face of the left valve plate (61) are compressed to form sealing.

4. The novel high seal parallel gate valve of claim 3, wherein: the left valve plate (61), the positioning base plate (62), the right valve plate (63) and the valve rod (5) are all made of stainless steel materials, the left valve plate (61) and the right valve plate (63) are parallel to each other, and the positioning base plate (62) is fixed with the lower end of the valve rod (5) in a welding mode or in a bolt connection mode.

5. The novel high seal parallel gate valve of claim 4, wherein: the valve cover (2) is fixedly locked with the upper end of the valve body (1) through bolts, a valve rod through hole is formed in the middle of the valve cover (2), and the valve rod (5) penetrates into the valve cavity (12) from the valve rod through hole.

6. The novel high seal parallel gate valve of claim 1 or 5, wherein: the left valve seat (3) is fixedly bonded with the inner wall surface of the valve body (1) or fixedly locked through a screw, and the right valve seat (4) is fixedly welded with the inner wall surface of the valve body (1).