CN218031499U

CN218031499U - Rising stem soft seal gate valve

Info

Publication number: CN218031499U
Application number: CN202222425847.7U
Authority: CN
Inventors: 康栩冬
Original assignee: Shijiazhuang Lanze Valve Co ltd
Current assignee: Shijiazhuang Lanze Valve Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2022-12-13
Anticipated expiration: 2032-09-13

Abstract

The utility model relates to the technical field of valves, a rising stem soft seal gate valve is proposed, including valve body, the valve gap of setting on the valve body, valve body and valve gap enclose into the slip cavity, and the valve plate slides and sets up in the slip cavity, and the support setting is on the valve gap, and the valve rod rotates and sets up on the support, and passes the valve gap setting on the valve plate, through threaded connection between valve gap and the valve body, still includes: the first sealing ring is arranged between the valve cover and the valve body. Through above-mentioned technical scheme, valve gap and valve body in the gate valve of having solved among the correlation technique lead to occupation space big through flange joint, are difficult to the problem of installation and dismantlement in the narrow and small position in space.

Description

Rising stem soft seal gate valve

Technical Field

The utility model relates to the technical field of valves, it is specific, relate to a rising stem soft sealing gate valve.

Background

The gate valve has the advantage of the change of having maintained dismantlement, and some narrow and small positions need can conveniently be adjusted with the valve rod extension, and valve body and valve gap adopt flange joint more in the current gate valve, and flange joint needs a plurality of bolt fastener to fasten, and at the same inconvenient installation and the dismantlement of narrow and small position department, the flange also can increase the volume of valve body itself simultaneously, it is big to lead to the space to occupy, the installation is inconvenient scheduling problem, and be in humid environment when the valve for a long time, easily rust and lead to valve body and valve gap adhesion to appear, further lead to dismantling the difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rising stem soft sealing gate valve has solved valve gap and the valve body in the gate valve among the correlation technique and has leaded to occupation space big through flange joint, is difficult to the problem of installation and dismantlement in the narrow and small position in space.

The technical scheme of the utility model as follows:

the utility model provides an rising stem soft seal gate valve, includes the valve body, sets up valve gap on the valve body, the valve body with the valve gap encloses into the slip cavity, and the valve plate slides and sets up in the slip cavity, the support sets up on the valve gap, the valve rod rotates and sets up on the support, and passes the valve gap sets up on the valve plate, the valve gap with through threaded connection between the valve body, still include:

the first sealing ring is arranged between the valve cover and the valve body.

As a further technical scheme, a plurality of lubrication holes are circumferentially distributed on the valve cover, an annular oil inlet groove is formed in the upper portion of the threaded portion of the valve cover, and the annular oil inlet groove is communicated with the plurality of lubrication holes, and the lubricating device further comprises:

and the oil plug is arranged at the lubricating hole.

As a further technical solution, the method further comprises:

and the second sealing ring is arranged between the valve cover and the valve body, and the threaded part and the annular oil inlet groove are positioned between the first sealing ring and the second sealing ring.

As a further technical scheme, the valve body is provided with a bearing platform, the valve cover is provided with a lapping platform, the lapping platform is lapped on the bearing platform after the valve cover is in threaded connection with the valve body, and the second sealing ring is located between the bearing platform and the lapping platform.

As a further technical solution, the method further comprises:

and the hand wheel is arranged on the valve rod and used for driving the valve rod to rotate.

As a further technical scheme, a first guide inclined plane is arranged on the bearing platform, a second guide inclined plane is arranged on the lapping platform, and the first guide inclined plane and the second guide inclined plane are arranged in a matched mode.

As a further technical scheme, the valve body is provided with a first protrusion and a second protrusion which are arranged at intervals, a sealing gap is formed between the first protrusion and the second protrusion, and the valve plate is located in the sealing gap after sliding.

The utility model discloses a theory of operation and beneficial effect do:

the utility model discloses in, lead to occupation space big for valve gap and the valve body in the gate valve of solving among the correlation technique through flange joint, the problem of installation and dismantlement is difficult to in the narrow and small position in space, a rising stem soft seal gate valve has been designed, specifically do, change threaded connection into by flange joint through the connected mode with valve body and valve gap, the volume of valve body and valve gap has been reduced, occupation space has been reduced, avoid moist environment to lead to the fact the corruption to the screw thread part equally, seal structure has been increased, first sealing washer has been set up between screw thread part and exterior space, outside humid air has been avoided getting into the slip cavity, and then avoid corroding after moisture and the oxygen contact in screw thread part and the humid air, stable connection has been guaranteed, the dismantlement and the installation in valve body and the valve gap later stage have been made things convenient for equally.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic three-dimensional structure diagram of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the structure of part A of FIG. 2;

in the figure: 1. a valve body, 2, a valve cover, 3, a sliding cavity, 4, a valve plate, 5, a bracket, 6, a valve rod, 7, a first sealing ring, 8, a lubricating hole, 9, a threaded part, 10, an annular oil inlet groove, 11 and an oil plug, 12, a second sealing ring, 13, a supporting platform, 14, a lapping platform, 15, a hand wheel, 16, a first guide inclined plane, 17, a second guide inclined plane, 18, a first bulge, 19, a second bulge, 20 and a sealing gap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work, are related to the scope of the present invention.

As shown in FIGS. 1 to 3, the present embodiment proposes

The utility model provides an rising stem soft seal gate valve, includes valve body 1, sets up valve gap 2 on valve body 1, and valve body 1 and valve gap 2 enclose into sliding cavity 3, and valve plate 4 slides and sets up in sliding cavity 3, and support 5 sets up on valve gap 2, and valve rod 6 rotates and sets up on support 5, and passes valve gap 2 and set up on valve plate 4, through threaded connection between valve gap 2 and the valve body 1, still includes:

and the first sealing ring 7 is arranged between the valve cover 2 and the valve body 1.

In this embodiment, in order to solve the problem that valve gap 2 and valve body 1 in the gate valve among the correlation technique lead to occupation space big through flange joint, be difficult to installation and dismantlement in the narrow and small position in space, a rising stem soft seal gate valve has been designed, specifically, change the connected mode of valve body 1 and valve gap 2 into threaded connection by flange joint, the volume of valve body 1 and valve gap 2 has been reduced, occupation space has been reduced, likewise avoid moist environment to lead to the fact corruption to screw thread portion 9, seal structure has been increased, first sealing washer 7 has been set up between screw thread portion 9 and exterior space, outside humid air has been avoided getting into in the slip cavity 3, and then avoid corroding after moisture and the oxygen contact in screw thread portion 9 and the humid air, stable connection has been guaranteed, the dismantlement and the installation in valve body 1 and valve gap 2 later stage have been made things convenient for the same.

Further, circumference distributes on valve gap 2 and is provided with a plurality of

lubrication hole

8, and 9 upper portions of the screw thread portion of valve gap 2 are opened there is annular oil feed groove 10 to annular oil feed groove 10 communicates a plurality of lubrication hole 8, still includes:

and an oil plug 11 provided at the lubrication hole 8.

Further, the method also comprises the following steps:

and a second seal ring 12 disposed between the bonnet 2 and the valve body 1, wherein the threaded portion 9 and the annular oil inlet groove 10 are located between the first seal ring 7 and the second seal ring 12.

In this embodiment, in order to further facilitate the disassembly and assembly of the valve cap 2, and prevent the threaded portion 9 from corroding to cause large rotation resistance, the problem of difficulty in disassembly is solved, after the valve body 1 and the valve cap 2 are screwed together at the initial stage of use of an operator, by opening the oil plug 11, the lubricating oil is injected into the lubricating hole 8, the lubricating oil enters the threaded portion 9 through the oil inlet groove, and forms a layer of oil seal at the threaded portion 9, the oil plug 11 is put in again after the addition is completed to form a seal, further avoid the corrosion of the external humid air to the threaded portion 9, and reduce the friction force of the threaded portion 9, so that the operator saves more labor when operating, and when the operator is disassembled, when the resistance is found to be large, by opening the oil plug 11, the lubricating oil is replenished again, and the valve cap 2 is rotated left and right, so that the lubricating oil fully enters the threaded portion 9, and further reduce the friction, and easily cause pollution to the inside of the pipeline after the sealing oil is added, the second sealing ring 12 is arranged between the threaded portion 9 and the sliding cavity 3, so that the sealing effect of the lubricating oil is ensured, and the corrosion of the threaded portion 9 caused by the fluid inside of the pipeline is prevented from being corroded.

Further, the valve body 1 is provided with a bearing platform 13, the valve cover 2 is provided with a lapping platform 14, after the valve cover 2 is in threaded connection with the valve body 1, the lapping platform 14 is lapped on the bearing platform 13, and the second sealing ring 12 is located between the bearing platform 13 and the lapping platform 14.

In this embodiment, in order to further ensure the sealing performance and the stability, the contact area between the valve body 1 and the valve cap 2 is increased by the overlapping table 14 and the supporting table 13, the installation space of the second sealing ring 12 is increased, the sealing performance of the second sealing ring 12 is ensured, and the structural stability is increased.

Further, still include:

and the hand wheel 15 is arranged on the valve rod 6 and used for driving the valve rod 6 to rotate.

Furthermore, the supporting platform 13 is provided with a first guiding inclined surface 16, the lapping platform 14 is provided with a second guiding inclined surface 17, and the first guiding inclined surface 16 and the second guiding inclined surface 17 are arranged in a matching mode.

In this embodiment, in order to avoid the overflow of the lubricating oil, which causes the lubricating oil to enter the inside of the pipeline, the upper end surface of the supporting platform 13 is set to be the upward first guiding inclined surface 16, and the lapping platform 14 is matched with the first guiding inclined surface 17 to be set, and after the two are matched with the second sealing ring 12, the lubricating oil is prevented from entering the sliding cavity 3.

Further, the valve body 1 has a first protrusion 18 and a second protrusion 19 arranged at an interval, a sealing gap 20 is formed between the first protrusion 18 and the second protrusion 19, and the valve plate 4 is located in the sealing gap 20 after sliding.

In this embodiment, in order to guarantee the leakproofness of valve plate 4, set up first arch 18 and second arch 19 in the bottom of valve body 1, first arch 18 and second arch 19 all have the transition cambered surface to the two has formed seal clearance 20, and valve plate 4 is deep in seal clearance 20, increases the area of contact between the seal structure on the valve plate 4 and the valve body 1, and then increases sealed effect.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. The utility model provides an outspoken pole soft seal gate valve, includes valve body (1), sets up valve gap (2) on the valve body (1), valve body (1) with valve gap (2) enclose into slip cavity (3), and valve plate (4) slide to set up in slip cavity (3), support (5) set up on valve gap (2), valve rod (6) rotate to set up on support (5), and pass valve gap (2) set up on valve plate (4), its characterized in that, valve gap (2) with pass through threaded connection between valve body (1), still include:

the first sealing ring (7) is arranged between the valve cover (2) and the valve body (1).

2. An rising stem soft seal gate valve according to claim 1, wherein a plurality of lubricating holes (8) are circumferentially distributed on the valve cover (2), an annular oil inlet groove (10) is opened on the upper part of the threaded part (9) of the valve cover (2), and the annular oil inlet groove (10) is communicated with the plurality of lubricating holes (8), further comprising:

an oil plug (11) provided at the lubrication hole (8).

3. The rising stem soft seal gate valve of claim 2, further comprising:

and the second sealing ring (12) is arranged between the valve cover (2) and the valve body (1), and the threaded part (9) and the annular oil inlet groove (10) are positioned between the first sealing ring (7) and the second sealing ring (12).

4. A rising stem soft sealing gate valve according to claim 3, characterized in that the valve body (1) has a bearing platform (13), the valve cover (2) has a lapping platform (14), after the valve cover (2) and the valve body (1) are screwed, the lapping platform (14) is lapped on the bearing platform (13), and the second sealing ring (12) is positioned between the bearing platform (13) and the lapping platform (14).

5. The rising stem soft seal gate valve of claim 1, further comprising:

and the hand wheel (15) is arranged on the valve rod (6) and is used for driving the valve rod (6) to rotate.

6. A rising stem soft seal gate valve according to claim 4, characterized in that the supporting platform (13) is provided with a first guiding inclined surface (16), the overlapping platform (14) is provided with a second guiding inclined surface (17), and the first guiding inclined surface (16) and the second guiding inclined surface (17) are arranged in a matching way.

7. Rising stem soft sealing gate valve according to claim 1, characterized in that the valve body (1) has a first protrusion (18) and a second protrusion (19) which are arranged at intervals, a sealing gap (20) is formed between the first protrusion (18) and the second protrusion (19), and the valve plate (4) is located in the sealing gap (20) after sliding.