CN212718354U - Soft sealing gate valve - Google Patents
Soft sealing gate valve Download PDFInfo
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- CN212718354U CN212718354U CN202021352562.XU CN202021352562U CN212718354U CN 212718354 U CN212718354 U CN 212718354U CN 202021352562 U CN202021352562 U CN 202021352562U CN 212718354 U CN212718354 U CN 212718354U
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- sealing
- valve rod
- bearing
- gate valve
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Abstract
The utility model provides a soft sealing gate valve, including valve body, valve gap, valve rod, be provided with on the valve rod be used for with valve body, valve gap complex location shaft shoulder, the up end of location shaft shoulder and the valve gap between be provided with first bearing, the location shaft shoulder and be provided with the second bearing between the valve body. The first bearing and the second bearing enable sliding friction between the positioning shaft shoulder of the valve rod and the valve cover and the valve body to be converted into bearing friction, and the bearing friction force is far smaller than the sliding friction force between the positioning shaft shoulder of the valve rod and the valve cover and the valve body, so that the friction force between the positioning shaft shoulder of the valve rod and the valve body and the valve cover is reduced, and the service life is prolonged; meanwhile, labor is saved when the valve rod is rotated.
Description
Technical Field
The utility model relates to a soft sealing gate valve technical field, concretely relates to soft sealing gate valve.
Background
The soft seal gate valve is an industrial valve and has wide application in various fields. The main components of the valve include valve body, valve plate, valve rod, valve cover, gland, and sealing part matching with the valve rod. The valve plate is located the valve body, is equipped with the nut on the valve plate, is equipped with the trapezoidal thread that corresponds with the nut on the valve plate on the valve rod, and the difference of the installation form of installation valve rod, soft seal gate valve can be divided into with bright pole soft seal gate valve and dark pole soft seal gate valve.
Among the prior art, for realizing the accurate positioning of valve rod, be equipped with the shaft shoulder on the valve rod, the hookup location department of valve body and valve gap is provided with the mounting groove that is used for installing the shaft shoulder, and at work, because the effect of axial force, the pressure between the up end of shaft shoulder, lower terminal surface and valve body, the valve gap is great, and then frictional force between it is also great, needs great moment like this just can rotate the valve rod, and the valve rod is big at the wearing and tearing volume of rotation in-process, influences life. Thereby causing the shaft shoulder to be installed in the installation groove through the copper collar seal often in the process of rotating the valve rod of the soft seal gate valve.
Disclosure of Invention
An object of the utility model is to provide a soft sealing gate valve aims at solving among the prior art technical problem that frictional force is big between the location shaft shoulder of the valve rod among the sealing gate valve and valve body, valve gap.
In order to achieve the above object, the utility model relates to a soft sealing gate valve adopts following technical scheme to do: the utility model provides a soft sealing gate valve, includes valve body, valve gap, valve rod, be provided with on the valve rod be used for with valve body, valve gap complex location shaft shoulder, be provided with first bearing between the up end of location shaft shoulder and the valve gap, be provided with the second bearing between location shaft shoulder and the valve body.
Preferably, the first bearing and the second bearing are both thrust bearings.
Preferably, the valve rod is provided with a sealing component matched with the valve rod, the sealing component comprises two stages arranged along the axial direction of the valve rod, and the two stages of sealing components are independently installed.
Preferably, the first sealing part is arranged at the first stage close to the inner end of the valve rod in the two-stage sealing part, the first sealing part is correspondingly installed by matching a pressing ring with an isolation pad, an installation groove is formed in the outer side of the valve cover, the isolation pad is installed at the bottom of the installation groove, and the pressing ring covers the isolation pad.
Preferably, the primary sealing member is a sealing ring and is compressed between the pressing ring and the spacer.
Preferably, one end of the pressing ring, which is used for pressing the primary sealing ring, is provided with a step surface, the step surface and an inner hole of the pressing ring form a step hole, the primary sealing part is pressed between the step surface of the step hole and the isolation pad, and the end surface of the pressing ring, which is close to one end of the primary sealing part, forms a limiting surface for limiting the compression amount of the primary sealing part.
Preferably, a detachable gland for covering the pressing ring is arranged on the valve cover at the mounting groove.
Preferably, one of the two-stage sealing components near the outer end of the valve stem is a second-stage sealing component which is a sealing ring and is compressed between the gland and the pressing ring.
The utility model has the advantages that: the utility model discloses a set up first bearing between the up end of the location shoulder of valve rod and the valve gap, and set up the second bearing between the up end of the location shoulder of valve rod and valve body, sliding friction between the location shoulder of valve rod and valve gap, valve body has so transformed into the bearing friction of first bearing, second bearing, the bearing friction power of first bearing, second bearing is far less than the sliding friction power between the location shoulder of valve rod and valve gap, valve body, thereby reduced the friction power between the location shoulder of valve rod and valve body, valve gap, prolonged life; meanwhile, labor is saved when the valve rod is rotated.
The gate valve sealing structure comprises a valve rod and a sealing part matched with the valve rod, the sealing part is provided with two stages and each stage of sealing part is independently installed along the axial direction, a second-stage part close to the outermost end of the valve rod is disassembled, a medium hand in the pipeline is close to the blocking of the first-stage sealing part of the valve cover and cannot be ejected outwards along the outer edge of the valve rod, the medium hand can only slowly leak outwards along the outer edge of the valve rod, therefore, when the sealing part is replaced, the medium in the pipeline does not need to be closed, and the second-stage part close to the outermost end of the valve rod is directly disassembled to.
Furthermore, one end of the pressing ring, which is used for pressing the primary sealing ring, is provided with a step surface, the step surface and an inner hole of the pressing ring form a step hole, the primary sealing part is pressed between the step surface of the step hole and the isolation pad, and the end surface of the pressing ring, which is close to one end of the primary sealing part, forms a limiting surface used for limiting the compression amount of the primary sealing part. The spacing face has restricted the screw in volume of clamping ring, and along with the screwing up of clamping ring, the sealing washer is constantly compressed tightly, until the clamping ring is twisted motionless, has prevented that the sealing washer from being damaged because of the compression is excessive.
Furthermore, the valve cover is provided with a detachable gland which is connected with a pressing ring through a bolt at the mounting groove, and the gland covers the pressing ring, so that the size of the pressing ring is small, the material for manufacturing the pressing ring is less, and the cost is saved.
Further, the second-level sealing part comprises two sealing rings, the sealing performance of the gate valve is further improved through the two sealing rings, and meanwhile, the period of replacing the sealing rings of the gate valve is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a specific embodiment of the soft seal gate valve of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses soft seal gate valve's embodiment, as shown in fig. 1, soft seal gate valve, including valve body 4, valve gap 1, valve rod 3, be provided with on the valve rod 3 be used for with valve body, valve gap complex location shaft shoulder 5, be provided with first bearing 6 between the up end of location shaft shoulder 5 and the valve gap 1, be provided with second bearing 7 between location shaft shoulder and the valve body 4.
In this embodiment, the first bearing 6 and the second bearing 7 are both thrust bearings.
In this embodiment, the valve rod 3 is provided with a sealing member matching with the valve rod, and the sealing member includes two stages arranged along the axial direction of the valve rod 3 and the two stages are independently installed.
In this embodiment, the one-level that sets up in the two-stage seal part and being close to valve rod 3 the inner is one-level seal part, and one-level seal part is installed through the cooperation of corresponding clamping ring 8 with isolating pad 9, the valve gap 1 outside is equipped with the mounting groove, and isolating pad 9 installs in the mounting groove bottom, and clamping ring 8 covers the top at isolating pad 9.
In this embodiment, the primary sealing member is a seal ring and is compressed between the pressing ring 8 and the spacer 9.
In this embodiment, a stepped surface is provided at one end of the pressing ring 8, which presses the primary sealing ring, the stepped surface and an inner hole of the pressing ring 8 form a stepped hole, the primary sealing member is pressed between the stepped surface of the stepped hole and the isolation pad 9, and an end surface of the pressing ring 8, which is close to one end of the primary sealing member, forms a limiting surface for limiting a compression amount of the primary sealing member. The spacing face has restricted the screw in volume of clamping ring, and along with the screwing up of clamping ring 8, the sealing washer is constantly compressed tightly, until the clamping ring is twisted motionless, has prevented that the sealing washer from being damaged because of the compression is excessive.
In this embodiment, be provided with on the valve gap 1 and adopt bolted connection to be used for covering the detachable gland 2 of clamping ring 8 in mounting groove department, gland 2 covers clamping ring 8, and the volume that needs clamping ring 8 like this is less, and the material of preparation clamping ring 8 is few, has practiced thrift the cost.
In this embodiment, one of the two sealing members near the outer end of the valve rod 3 is a second sealing member, which is a sealing ring and is compressed between the gland 2 and the pressing ring 8. The inner of gland 2 is equipped with the seal cover that gos deep into in the mounting groove, and the hole of seal cover and the valve rod perforation that supplies valve rod 3 to pass on the gland 2 have formed the step hole together, and the secondary seal part is compressed tightly between the step face in step hole and clamping ring 8, and the terminal surface that the seal cover is close to 8 one ends of clamping ring has constituted the spacing face of injecing the secondary seal part compression volume, and spacing face has restricted the screw in volume of gland 2, prevents that the sealing ring part from being damaged because of compressing the excess.
In this embodiment, second grade seal part includes twice sealing washer, and twice sealing washer has further improved the sealing performance of gate valve, has prolonged the cycle that the sealing washer was changed to the gate valve simultaneously.
The utility model relates to a soft sealing gate valve is in the phenomenon that the medium outwards leaked along the valve rod appearing, under the condition of the medium in not closing the pipeline, directly dismantles gland 2, and the medium in the pipeline receives blockking of one-level sealing washer and can not outwards spray along the outer fringe of valve rod 3 and go out, and it can only slowly outwards leak along the outer fringe of valve rod 3, and direct change second grade sealing washer this moment can to the realization does not close the purpose that the sealing washer was changed to the medium in the pipeline.
In other embodiments, the primary sealing member may be further provided with a plurality of sealing rings.
In other embodiments, the secondary component may also include only one or more than two sealing rings.
In other embodiments, the thrust bearing may be replaced with a ball bearing shaft.
In other embodiments, the pressing ring can be further provided with a sealing ring installation groove for installing the sealing ring.
In other embodiments, the gland may also be threadably connected to the valve cap.
In other embodiments, the seal ring may be replaced with a filler such as rubber, plastic, graphite, and rubber-asbestos plate.
Claims (8)
1. The utility model provides a soft sealing gate valve, includes valve body, valve gap, valve rod, be provided with on the valve rod be used for with valve body, valve gap complex location shaft shoulder, its characterized in that: a first bearing is arranged between the upper end face of the positioning shaft shoulder and the valve cover, and a second bearing is arranged between the positioning shaft shoulder and the valve body.
2. The soft seal gate valve of claim 1, wherein: the first bearing and the second bearing are both thrust bearings.
3. The soft seal gate valve of claim 1 or 2, wherein: the valve rod is provided with a sealing component matched with the valve rod, and the sealing component comprises two stages arranged along the axial direction of the valve rod and the two stages of sealing components are independently installed.
4. The soft seal gate valve of claim 3, wherein: the valve cover is characterized in that a first-stage sealing part close to the inner end of the valve rod is arranged in the two-stage sealing part, the first-stage sealing part is installed through the matching of a corresponding pressing ring and an isolation pad, a mounting groove is formed in the outer side of the valve cover, the isolation pad is installed at the bottom of the mounting groove, and the pressing ring covers the isolation pad.
5. The soft seal gate valve of claim 4, wherein: the primary sealing component is a sealing ring and is compressed between the pressing ring and the isolating pad.
6. The soft seal gate valve of claim 5, wherein: the one end that compresses tightly one-level sealing washer of clamping ring is provided with the step face, and this step face constitutes the step hole with the hole of clamping ring, and sealing element is compressed tightly between the step face and the isolating pad in step hole, the terminal surface that is close to one end of one-level sealing element of clamping ring constitutes the spacing face that is used for injecing one-level sealing element compression volume.
7. The soft seal gate valve according to any one of claims 4 to 6, wherein: and a detachable gland for covering the pressing ring is arranged at the mounting groove on the valve cover.
8. The soft seal gate valve of claim 7, wherein: one of the two-stage sealing components, which is close to the outer end of the valve rod, is a second-stage sealing component which is a sealing ring and is pressed between the gland and the pressing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021352562.XU CN212718354U (en) | 2020-07-10 | 2020-07-10 | Soft sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021352562.XU CN212718354U (en) | 2020-07-10 | 2020-07-10 | Soft sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212718354U true CN212718354U (en) | 2021-03-16 |
Family
ID=74982815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021352562.XU Active CN212718354U (en) | 2020-07-10 | 2020-07-10 | Soft sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212718354U (en) |
-
2020
- 2020-07-10 CN CN202021352562.XU patent/CN212718354U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230808 Address after: No. 98-1 Dengfeng Road, Shangjie District, Zhengzhou City, Henan Province, 450041 Patentee after: Zhengzhou zhengvalve Machinery Co.,Ltd. Address before: 450100 100m to the west at the intersection of Guodian Avenue and Tongxin Road, Xingyang City, Zhengzhou City, Henan Province Patentee before: Henan Daxin Valve Co.,Ltd. |