CN207554823U - A kind of ore pulp valve using limited step limiting gland - Google Patents
A kind of ore pulp valve using limited step limiting gland Download PDFInfo
- Publication number
- CN207554823U CN207554823U CN201721670800.XU CN201721670800U CN207554823U CN 207554823 U CN207554823 U CN 207554823U CN 201721670800 U CN201721670800 U CN 201721670800U CN 207554823 U CN207554823 U CN 207554823U
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- Prior art keywords
- valve
- gland
- ore pulp
- limited step
- valve rod
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Abstract
The utility model discloses a kind of ore pulp valves using limited step limiting gland, including the pressing plate, stripper rubber and gland being sequentially arranged at from the bottom to top on valve rod, limited step is provided on valve rod, the lower face of limited step is bonded with the upper surface of gland, the lower thread of one limiting end and valve rod connects, and pressing plate, stripper rubber and gland are pressed between the lower face of limited step and the upper surface of limiting end by limiting end.The utility model compresses stripper rubber using limited step and limiting end, the loosening of the screw thread in conventional valve group between gland and valve rod is avoided so as to cause rubber seal failure, the valve group service life significantly shortens, stripper rubber is also avoided to be destroyed by stripper rubber molecular structure caused by the frictional force of gland, force way when valve is closed is changed to step stress by traditional screw thread stress, workpiece stressed effect is more preferable, improves the leak-proof energy and service life of ore pulp valve.
Description
Technical field
The utility model is related to Special valve technical field more particularly to a kind of ore pulps using limited step limiting gland
Valve.
Background technology
Ore pulp valve is gained the name when being applied on mine, has that wear-resisting, corrosion-resistant, service life is long, interchangeability is strong, assembling side
Just, the industries such as the features such as maintenance cost is low, high financial profit, sealed reliable, metallurgical suitable for mine, coal, chemical industry, power plant
Granule materials conveyance conduit cut-off, be current domestic slurry pipeline steel system preferably preferred valve
Traditional ore pulp valve is mainly made of valve rod, gland, pressing plate and stripper rubber, is bonded by stripper rubber with valve seat
Or turning off or on for ore pulp valve is realized in separation.In the assembling process of ore pulp valve, need first to fix valve rod lower end, pacify successively
Fill pressing plate and stripper rubber, finally fastened with gland, since gland is screw thread rotation fastening, stripper rubber be not only squeezed also by
To the frictional force of circumferencial direction, since the rubbing surface of stripper rubber and gland is outer, therefore the Tightening moment needed is very big.Valve is closing
When closing between gland and valve rod screw thread can be vibrated by upward impact force, and during ore pulp valve working condition it is larger, easily
Thread looseness is caused, so as to compress stripper rubber, leading to valve, stripper rubber can not be tight with the sealing surface of valve seat when closed
Closely connected conjunction, causes leakage rate to increase, in addition, in the reciprocatory movement of valve rod, the particulate matter in ore pulp medium can enter valve
Thread pitch between bar and gland so as to wear screw thread, further shortens the service life of ore pulp valve, and stripper rubber meeting
By the frictional force that gland transmits, destroyed so as to cause the structure of stripper rubber.
Utility model content
For deficiencies of the prior art, the technical problems to be solved in the utility model is：How to solve existing
Ore pulp valve, the screw thread between gland and valve rod easily loosens and is worn, so as to make stripper rubber that can not be compacted, cause
Leakage rate increases.
In order to solve the above technical problems, the utility model employs following technical solution：
It is a kind of using limited step limiting gland ore pulp valve, including be sequentially arranged at from the bottom to top on valve rod pressing plate,
Stripper rubber and gland, which is characterized in that be provided with limited step on the valve rod, the lower face of the limited step with it is described
Gland upper surface fitting, one limiting end connect with the lower thread of the valve rod, it is described limit end by the pressing plate,
The stripper rubber and the gland are pressed between the lower face of the limited step and the upper surface of the limiting end.
Preferably, the limited step is provided with the structure for limiting the valve rod axial rotation.
Preferably, the cross section of the limited step is hexagon.
Preferably, the inner surface of the runner of valve seat of the limiting end towards the ore pulp valve stretches out multiple position-limited claws, institute
State between the position-limited claw guiding end face opposite with the runner and the inner surface of the runner that there are gaps.
Preferably, the ore pulp valve limits end with valve rod by being threadedly coupled, and spot welding is locking.
Preferably, the valve rod is installed with being provided with seal groove on the face of pressing plate cooperation in the seal groove
There is sealing ring.
Preferably, the upper surface between the pressing plate and the gland is stretched out on the stripper rubber for described in a direction
The conical surface of the axis of valve rod obliquely.
It is to sum up shown, the utility model discloses it is a kind of using limited step limiting gland ore pulp valve, including by down toward
On be sequentially arranged at pressing plate, stripper rubber and gland on valve rod, be provided with limited step, the limited step on the valve rod
Lower face be bonded with the upper surface of the gland, one limiting end connect with the lower thread of the valve rod, the limiting
The pressing plate, the stripper rubber and the gland are pressed on the lower face of the limited step and the limiting end by end
Upper surface between.The utility model provides the compression mode of a kind of new stripper rubber and gland, using limited step with
It limits end and compresses stripper rubber, avoid the loosening of screw thread between gland and valve rod with being worn, it is thus also avoided that fluid sealant
Skin is improved the leak-proof energy of ore pulp valve and using the longevity by stripper rubber structural damage caused by the frictional force of gland
Life.
Description of the drawings
It is new to this practicality below in conjunction with attached drawing in order to make the purpose, technical scheme and advantage of utility model clearer
Type is described in further detail, wherein：
Fig. 1 is a kind of structure diagram for the ore pulp valve that gland is limited using limited step disclosed in the utility model.
The correspondence of attached figure label is：Valve seat 1, pressing plate 2, stripper rubber 3, gland 4, valve rod 5, limited step 51,
Limit end 6, position-limited claw 61, sealing ring 8, seal groove 53, be oriented to end face 611, runner inner surface 11.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model discloses it is a kind of using limited step limiting gland ore pulp valve, including by down toward
On be sequentially arranged at pressing plate 2, stripper rubber 3 and gland 4 on valve rod 5, be provided with limited step 51, limited step on valve rod 5
51 lower face is bonded with the upper surface of gland 4, and a limiting end 6 is connect with the lower thread of valve rod 5, and limiting end 6 will
Pressing plate 2, stripper rubber 3 and gland 4 are pressed between the lower face of limited step 51 and the upper surface of limiting end 6.
Compared with existing ore pulp valve, the utility model uses limited step 51 and limiting 6 clamping platen 2 of end, sealing
Rubber 3 and gland 4 solve the problems, such as that the screw thread between gland 4 and valve rod 5 is hit in the ore pulp valve course of work and is loosened,
It also avoids the particulate matter in ore pulp medium and enters gland 4 and screw thread is caused to wear with valve rod 5, in addition, existing ore pulp valve,
When gland 4 is installed, in order to ensure to compress stripper rubber 3, need to apply larger torque to gland 4, so as to cause stripper rubber 3
By the frictional force that gland 4 is larger, due to 3 generally use rubber material of stripper rubber, meeting when by larger frictional force
The molecular structure of stripper rubber 3 is destroyed, and in the utility model, it is metal to limit contact surface between end 6 and pressing plate 2
Face, the torque transmitted to pressing plate 2 is smaller, and stripper rubber 3 is only squeezed power, and the molecular structure for avoiding stripper rubber 3 is broken
It is bad, also, when ore pulp valve is closed, impact force is mainly born by valve rod 5 and limited step 51, the impact that limiting end 6 is subject to
Power is smaller, therefore limits end 6 and be not easy to loosen, and further improves the service life of ore pulp valve.To sum up, the utility model discloses
Limit the ore pulp valve of gland 4 compared with existing ore pulp valve using limited step 51, the ability of anti-leak is more preferable, and using the longevity
It orders longer.
When it is implemented, limited step 51 is provided with the structure for limiting 5 axial rotation of valve rod, can will specifically limit
The cross section of step 51 is set as hexagon.
Ore pulp valve in the utility model needs first to be inverted valve when mounted, fixed valve rod 5, installs gland 4, close successively
Sealing skin 3 and pressing plate 2 finally limit end 6 and fasten.Therefore, it sets to limit 5 axial rotation of valve rod on limited step 51
Structure, convenient for fastening limit end 6, improve efficiency of assembling, further, the cross section of limited step 51 is set as six
Side shape can directly be fixed valve rod 5 using existing spanner.
When it is implemented, the inner surface 11 of limiting end 6 towards the runner of the valve seat 1 of ore pulp valve stretches out multiple position-limited claws 61,
There are gaps between the guiding end face 611 opposite with runner of position-limited claw 61 and the inner surface 11 of runner.
Position-limited claw 61 plays the role of guiding, 61 this structure of position-limited claw, and the material used is less, you can reduces product
Weight can also save manufacture cost, and reduce the interference to ore pulp media flow.
When it is implemented, ore pulp valve limits end 6 with valve rod 5 by being threadedly coupled, and spot welding is locking.
When it is implemented, being provided with seal groove 53 on the face that valve rod 5 coordinates with pressing plate 2, it is equipped in seal groove 53
Sealing ring 8.
In the course of work of valve, it may appear that gap of the ore pulp medium between pressing plate 2 and gland 4 flows into limiting end
The situation of screw thread between 6 and valve rod 5 so as to cause to wear to screw thread, therefore, sealing ring is set between valve plate and valve rod 5
8, it can prevent medium from entering screw thread, avoid the abrasion of screw thread.
When it is implemented, it is an axis towards valve rod 5 that the upper surface between pressing plate 2 and gland 4 is stretched out on stripper rubber 3
The conical surface of line obliquely.
Existing stripper rubber 3, in order to save material, the upper surface between pressing plate 2 and gland 4 is plane, in valve
During closing, the sealing surface deformation of stripper rubber 3 is larger, and sealing effect is poor, uses structure this disclosed in the utility model
Stripper rubber 3, mechanical property is more preferable, and the deformation of sealing surface is smaller when valve is closed, and sealing effect is more preferable.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although logical
The preferred embodiment crossed with reference to the utility model has been described the utility model, but those of ordinary skill in the art
It should be appreciated that various changes can be made to it in the form and details, without departing from the appended claims institute
The spirit and scope of the utility model of restriction.
Claims (7)
1. a kind of ore pulp valve using limited step limiting gland, including the pressing plate, close being sequentially arranged at from the bottom to top on valve rod
Sealing skin and gland, which is characterized in that limited step, the lower face of the limited step and the pressure are provided on the valve rod
The upper surface fitting of lid, a limiting end are connect with the lower thread of the valve rod, and the end that limits is by the pressing plate, institute
It states stripper rubber and the gland is pressed between the lower face of the limited step and the upper surface of the limiting end.
2. ore pulp valve as described in claim 1, which is characterized in that the limited step is provided with to limit the stem shaft
To the structure of rotation.
3. ore pulp valve as claimed in claim 2, which is characterized in that the cross section of the limited step is hexagon.
4. ore pulp valve as described in claim 1, which is characterized in that the runner of valve seat of the limiting end towards the ore pulp valve
Inner surface stretch out multiple position-limited claws, the position-limited claw inner surface that is oriented to end face and the runner opposite with the runner it
Between there are gaps.
5. ore pulp valve as described in claim 1, which is characterized in that the ore pulp valve limits end with valve rod by being threadedly coupled,
And spot welding is locking.
6. ore pulp valve as described in claim 1, which is characterized in that be provided on the face that the valve rod coordinates with the pressing plate close
Seal slot is equipped with sealing ring in the seal groove.
7. ore pulp valve as described in claim 1, which is characterized in that the pressing plate and the gland are stretched out on the stripper rubber
Between upper surface be the conical surface of an axis towards the valve rod obliquely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721670800.XU CN207554823U (en) | 2017-12-05 | 2017-12-05 | A kind of ore pulp valve using limited step limiting gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721670800.XU CN207554823U (en) | 2017-12-05 | 2017-12-05 | A kind of ore pulp valve using limited step limiting gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554823U true CN207554823U (en) | 2018-06-29 |
Family
ID=62664742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721670800.XU Active CN207554823U (en) | 2017-12-05 | 2017-12-05 | A kind of ore pulp valve using limited step limiting gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554823U (en) |
-
2017
- 2017-12-05 CN CN201721670800.XU patent/CN207554823U/en active Active
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