CN211231835U - Wear-resistant sliding valve - Google Patents
Wear-resistant sliding valve Download PDFInfo
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- CN211231835U CN211231835U CN201921559321.XU CN201921559321U CN211231835U CN 211231835 U CN211231835 U CN 211231835U CN 201921559321 U CN201921559321 U CN 201921559321U CN 211231835 U CN211231835 U CN 211231835U
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Abstract
The wear-resistant slide valve of the utility model is provided with a first channel in the left and right directions on the valve body, and a second channel vertical to the first channel is arranged on the valve body and the valve cover; valve body components are arranged in the first channel and the second channel; the valve body assembly comprises a valve rod, a guide plate, a valve seat retainer ring and a valve seat. The lower end of the valve rod is connected with a sliding plate. The two side walls of the valve body in the first channel are provided with guide plate grooves, and guide plates are arranged in the guide plate grooves to guide the sliding plate and limit the sliding plate to slide up and down. The valve seat retainer ring is fixed on the valve body on one side of the first channel. The valve seat is arranged in the first channel and positioned on one side of the valve seat retainer ring, and the edge of the flow hole of the valve seat is in plane contact sealing with the sliding plate. An upper sealing seat, a lower spacer ring, a lower low-leakage combined packing, an upper spacer ring, an upper low-leakage combined packing and a packing pressing sleeve are sequentially arranged between the valve cover and the valve rod from bottom to top, and a packing gland is fixed at the top of the packing pressing sleeve. The utility model discloses a wear-resisting slide valve can satisfy wearing and tearing operating mode requirement and long service life.
Description
Technical Field
The utility model belongs to the technical field of the valve, concretely relates to wear-resisting slide valve.
Background
In the severe working condition of gas-solid two-phase flow, the valve body, the internal parts and the sealing surface of the valve have larger erosion and abrasion, and the severe medium condition of the valve can cause the problems of scaling, abrasion, corrosion and the like of the valve. Such as a slide valve used in a gasoline adsorption desulfurization (S Zorb) process refinery, the medium is hydrogen + adsorbent, is a gas-solid two-phase flow, and is installed at the outlet of the regenerator, and its main function is the flow control of the adsorbent. The desulfurized sorbent is combusted in the regenerator, and the sorbent, which has recovered activity after combustion, is recycled through the slide valve. In the traditional regulating valve at present, a medium channel of the valve body has sharp turning or stagnation points, the flow resistance coefficient is large, and the solid adsorbent is easy to erode the valve body. In addition, the common filler and the filler compacting structure are adopted, so that the low leakage requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists provides a wear-resisting slide valve to it is big to solve current governing valve flow resistance coefficient, and the solid adsorbent is easy to the erosion valve body and be difficult to satisfy the problem of low leakage requirement.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a wear-resistant slide valve comprises a valve body and a valve cover which are fixed together, wherein a first channel in the left-right direction is arranged on the valve body, and a second channel vertical to the first channel in the up-down direction is arranged on the valve body and the valve cover; valve body components are arranged in the first channel and the second channel; the valve body assembly includes:
the lower end of the valve rod is connected with the sliding plate and can move up and down;
the guide plate grooves are formed in two side walls of the valve body in the first channel, and the guide plates are installed in the guide plate grooves and used for guiding the sliding plate and limiting the sliding plate to slide up and down;
the valve seat retainer ring is fixed on the valve body on one side of the first channel;
the valve seat is arranged in the first channel and positioned on one side of the valve seat retainer ring, the edge of the flow hole of the valve seat is in planar contact sealing with the sliding plate, and the flow is changed along with the up-and-down movement of the sliding plate;
the valve comprises a valve rod and a valve cover, wherein an upper sealing seat, a lower spacer ring, a lower low-leakage combined packing, an upper spacer ring, an upper low-leakage combined packing and a packing pressing sleeve are sequentially arranged between the valve cover and the valve rod from bottom to top, and a packing gland is fixed at the top of the packing pressing sleeve.
The utility model discloses further set up to, go up the seal receptacle with threaded connection is adopted to the valve gap.
The utility model discloses further set up to, open porosely the valve body bottom, downthehole bottom and welded fastening have been inserted to the hole.
The utility model discloses further set up to, go up low the combination of leaking pack with low the combination of leaking down packs the flexible graphite of the embedded wire including upper portion and lower part to and the flexible graphite of shaping at middle part.
The utility model discloses further set up to go up the spacer ring outside be equipped with the plug screw on the valve gap and annotate the fat valve, go up the plug screw with annotate the fat valve and respectively through annotating fat passageway intercommunication on two go up the spacer ring.
The utility model discloses further set up to be in the spacer ring outside down be equipped with down the plug screw on the valve gap, the plug screw is through annotating fat passageway intercommunication down the spacer ring down.
The utility model discloses further set up to, the valve body with the junction of valve gap is equipped with the seal groove, be equipped with the gasket in the seal groove.
The utility model discloses further set up to, gland is fixed to through packing gland double-screw bolt the valve gap top, the cover is equipped with dish type spring assembly on the packing gland double-screw bolt, dish type spring assembly's top is fixed by packing gland nut locking.
The utility model discloses further set up to, go up the seal receptacle lower extreme with adopt the tapering contact between the valve rod.
The utility model discloses further set up to, be equipped with on the valve body and sweep the unit, sweep the unit including sweeping the flange, sweeping the passageway and oblique discharge hole, it sets up to sweep the flange the valve body is outside and intercommunication sweep the passageway, it sets up to sweep the passageway the valve body is interior and the intercommunication first passageway, oblique discharge hole intercommunication first passageway and second passageway.
To sum up, the utility model discloses following beneficial effect has:
1) the valve body sweeps the flange and can blow clean, discharge the remaining adsorbent of valve body disk seat side through sweeping the passageway, keeps clean, prevents that the adsorbent from piling up, can effectively prolong the life of valve.
2) The valve body medium channel, namely the first channel, is a straight channel, so that a sharp turn or a stagnation point does not exist, the flow resistance coefficient is small, and the erosion of the solid adsorbent to the valve body is reduced to the maximum extent.
3) The inclined discharge holes are beneficial to discharging the residual adsorbent in the valve cavity, so that the adsorbent is prevented from being accumulated in the valve cavity, and the service life of the valve can be effectively prolonged.
4) Two groups of low-leakage combined packing are adopted for the valve rod, and two sealing can be realized.
5) The outer side of the valve cover is provided with the screw plug and the grease injection valve, so that emergency grease injection sealing can be realized when the valve rod leaks.
6) The low-leakage combined filler is fixed by adopting structures such as a disc spring set and the like, so that the pretightening force of the low-leakage combined filler is continuously compensated in temperature and stress alternation, and the leakage from the valve rod is avoided.
Drawings
Fig. 1 is a front view of an embodiment of the present invention;
fig. 2 is a left side view (partially in section) of an embodiment of the invention;
fig. 3 is a top view of a valve body and a purge unit in an embodiment of the invention.
Wherein, 1-valve body, 1 a-blowing flange, 1 b-blowing channel, 1 c-guide plate groove, 1 d-inclined discharge hole, 1 e-first channel, 2-bottom cover, 3-slide plate, 4-valve seat, 5-valve seat retainer ring, 6-valve rod, 7-guide plate, 8-gasket, 9-valve cover, 10-stud, 11-nut, 12-upper sealing seat, 13-lower spacer ring, 14-lower low leakage combined packing, 15-upper spacer ring, 16-upper plug screw, 17-grease injection valve, 18-upper low leakage combined packing, 19-packing press sleeve, 20-packing press cover, 21-disc spring group, 22-packing press stud, 23-packing press nut, 24-lower plug screw, 25-lower lipid pouring channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As an embodiment of the utility model provides, a wear-resisting slide valve, including fixed valve body 1 and valve gap 9 together, accessible double-screw bolt 10 and nut 11 are fixed, and the optional foundry goods of valve body 1 and forging are made, and preferred forging can overcome the inherent defect of foundry goods, like gas pocket, inclusion sediment, loose etc. and have the integrality on higher pressure boundary than the foundry goods. The valve body 1 is provided with a first channel 1e in the left-right direction, and the valve body 1 and the valve cover 9 are provided with a second channel perpendicular to the first channel 1e in the up-down direction. The first channel 1e is a straight channel, so that a sharp turn or a stagnation point does not exist, the flow resistance coefficient is small, and the solid adsorbent is furthest reduced from eroding the valve body 1. The first channel 1e and the second channel are internally provided with a valve body 1 assembly, and the valve body 1 assembly comprises a valve rod 6, a guide plate 7, a valve seat retainer ring 5 and a valve seat 4. The lower end of the valve rod 6 is connected with the sliding plate 3 and can move up and down; specifically, the lower end of the valve rod 6 and the sliding plate 3 can be connected in a T shape. The two side walls of the valve body 1 in the first channel 1e are provided with guide plate grooves 7, and the guide plates 7 are installed in the guide plate grooves 1c to guide the sliding plate 3 and limit the sliding plate to slide up and down. The valve seat retainer ring 5 is fixed on the valve body 1 on one side of the first channel 1e and can be fixed by welding to prevent the valve seat 4 from axially moving. The valve seat 4 is arranged in the first channel 1e and is positioned on one side of the valve seat retainer ring 5, the edge of the flow hole of the valve seat 4 is in plane contact sealing with the sliding plate 3, and the flow is changed along with the up-and-down movement of the sliding plate 3.
An upper sealing seat 12, a lower spacer ring 13, a lower low-leakage combined packing 14, an upper spacer ring 15, an upper low-leakage combined packing 18 and a packing pressing sleeve 19 are sequentially arranged between the valve cover 9 and the valve rod 6 from bottom to top, and a packing pressing cover 20 is fixed at the top of the packing pressing sleeve 19. The upper sealing seat 12 and the valve cover 9 can be connected by screw threads. The lower spacer ring 13 is arranged above the upper sealing seat 12, not only plays a role of guiding the valve rod 6, but also can scrape attachments adhered to the surface of the valve rod 6. The lower low-leakage combined packing 14 is arranged above the lower spacer ring 13 to realize the first sealing of the valve rod 6. The upper low-leakage combined packing 18 is arranged above the upper spacer ring 15 to realize the second sealing of the valve rod 6.
Furthermore, the sliding plate 3, the valve seat 4 and the guide plate 7 are made of stellite 6 hard alloy, so that the sliding plate 3, the valve seat 4 and the guide plate 7 are prevented from being scoured and worn by solid adsorbent. The surface of the valve rod 6 is sprayed with the wear-resistant coating, so that the erosion and the abrasion of the solid adsorbent can be effectively prevented.
Furthermore, a hole is formed in the bottom of the valve body 1, a bottom cover 2 is inserted into the hole and is welded and fixed, the medium is prevented from leaking outwards, and meanwhile the upper end face of the valve body is used for limiting the downward sliding of the sliding plate 3.
Further, the upper low-leakage combined packing 18 and the lower low-leakage combined packing 14 include flexible graphite with embedded wires at the upper and lower portions, and formed flexible graphite at the middle portion.
As the utility model provides a partial embodiment is equipped with plug screw 16 and notes fat valve 17 on the valve gap 9 in the upper spacer ring 15 outside, and plug screw 16 and notes fat valve 17 communicate upper spacer ring 15 through two last notes fat passageways respectively. The grease injection valve 17 can inject sealing grease into the upper spacer ring 15 through the upper grease injection channel of the valve cover 9 when the valve rod 6 leaks, so that emergency grease injection sealing is realized. The upper screw 16 is used as a backup, and in the case where the grease filling valve 17 is damaged or the grease filling passage on the grease filling valve 17 side is clogged, the upper screw 16 can be removed to fill the sealing grease.
As the utility model provides a partial embodiment, be equipped with down plug screw 24 on the valve gap 9 in the spacer ring 13 outside down, lower plug screw 24 is through annotating grease passageway 25 intercommunication spacer ring 13 down. When the valve rod 6 leaks, sealing grease can be injected into the lower spacer ring 13 through the lower grease injection channel 25 of the valve cover 9, so that emergency grease injection sealing is realized.
Furthermore, a sealing groove is formed in the joint of the valve body 1 and the valve cover 9, and a gasket 8 is arranged in the sealing groove, so that the medium is prevented from leaking outwards from the joint of the valve body 1 and the valve cover 9.
The packing gland 20 is fixed to the top of the valve cover 9 through a packing gland stud 22, a disc-shaped spring group 21 is sleeved on the packing gland stud 22, and the top of the disc-shaped spring group 21 is locked and fixed by a packing gland nut 23. In the process of alternating temperature and stress, the pretightening force of the low-leakage combined filler is continuously compensated, and the leakage from the valve rod 6 is avoided
The lower end of the upper sealing seat 12 and the valve rod 6 are in taper contact, namely in inclined plane contact, so that the valve rod 6 can be prevented from being sprayed upwards, damage to equipment and personnel is avoided, and the effect of taper sealing can be achieved.
As the utility model provides a partial embodiment is equipped with on the valve body 1 and sweeps the unit, sweeps the unit including sweeping flange 1a, sweeping passageway 1b and oblique discharge hole 1d, sweeps flange 1a and sets up and sweep passageway 1b in 1 outside and intercommunication of valve body, sweeps passageway 1b and sets up and communicate first passageway 1e in valve body 1, oblique discharge hole 1d communicates first passageway 1e and second passageway.
The blowing flange is located on the side of the valve seat 4 of the valve body 1 and is connected with the valve body 1 in a welding mode, the residual adsorbent on the side of the valve seat 4 of the valve body 1 can be blown clean and discharged through the blowing channel, the cleanness is kept, the adsorbent is prevented from being accumulated, and the service life of the valve can be effectively prolonged. The first channel 1e is a straight channel, so that a sharp turn or a stagnation point does not exist, the flow resistance coefficient is small, and the solid adsorbent is furthest reduced from eroding the valve body 1. The inclined discharge holes are beneficial to discharging the residual adsorbent in the valve cavity (namely the cavity inside the valve body 1), so that the adsorbent is prevented from being accumulated in the valve cavity, and the service life of the valve can be effectively prolonged.
The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A wear-resistant slide valve is characterized by comprising a valve body and a valve cover which are fixed together, wherein a first channel in the left-right direction is arranged on the valve body, and a second channel which is vertical to the first channel in the up-down direction is arranged on the valve body and the valve cover; valve body components are arranged in the first channel and the second channel; the valve body assembly includes:
the lower end of the valve rod is connected with the sliding plate and can move up and down;
the guide plate grooves are formed in two side walls of the valve body in the first channel, and the guide plates are installed in the guide plate grooves and used for guiding the sliding plate and limiting the sliding plate to slide up and down;
the valve seat retainer ring is fixed on the valve body on one side of the first channel;
the valve seat is arranged in the first channel and positioned on one side of the valve seat retainer ring, the edge of the flow hole of the valve seat is in planar contact sealing with the sliding plate, and the flow is changed along with the up-and-down movement of the sliding plate;
the valve comprises a valve rod and a valve cover, wherein an upper sealing seat, a lower spacer ring, a lower low-leakage combined packing, an upper spacer ring, an upper low-leakage combined packing and a packing pressing sleeve are sequentially arranged between the valve cover and the valve rod from bottom to top, and a packing gland is fixed at the top of the packing pressing sleeve.
2. A wear resistant slide valve as claimed in claim 1 wherein the upper seal seat is threadably connected to the valve cover.
3. A wear resistant slide valve in accordance with claim 1 in which the valve body has a bottom opening with a bottom cover inserted and welded therein.
4. The wear resistant spool valve of claim 1, wherein said upper and lower low leakage combined packing comprises flexible graphite with embedded wires in upper and lower portions and molded flexible graphite in a middle portion.
5. A wear-resistant slide valve according to claim 1, wherein an upper plug screw and a grease injection valve are provided on the valve cover outside the upper spacer ring, the upper plug screw and the grease injection valve communicating with the upper spacer ring through two upper grease injection passages, respectively.
6. A wear resistant slide valve as claimed in claim 1 wherein a lower plug screw is provided on the valve cover outside the lower spacer ring, the lower plug screw communicating with the lower spacer ring through a lower grease injection passage.
7. A wear resistant spool valve in accordance with claim 1 in which a seal groove is provided at the junction of the valve body and the valve cover, and a gasket is provided in the seal groove.
8. A wear-resistant slide valve according to claim 1, wherein the packing gland is fixed to the top of the valve cover by packing gland studs, disc spring sets are sleeved on the packing gland studs, and the tops of the disc spring sets are locked and fixed by packing gland nuts.
9. A wear resistant slide valve as set forth in claim 1 wherein a tapered contact is provided between the lower end of the upper seal retainer and the valve stem.
10. A wear resistant slide valve according to any one of claims 1-9, wherein the valve body is provided with a purge unit comprising a purge flange disposed outside the valve body and communicating with the purge passage, a purge passage disposed inside the valve body and communicating with the first passage, and an inclined vent hole communicating with the first passage and the second passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921559321.XU CN211231835U (en) | 2019-09-19 | 2019-09-19 | Wear-resistant sliding valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921559321.XU CN211231835U (en) | 2019-09-19 | 2019-09-19 | Wear-resistant sliding valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211231835U true CN211231835U (en) | 2020-08-11 |
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ID=71922144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921559321.XU Active CN211231835U (en) | 2019-09-19 | 2019-09-19 | Wear-resistant sliding valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211231835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060695A1 (en) * | 2022-09-21 | 2024-03-28 | 北京航天石化技术装备工程有限公司 | Slide valve for conveying dense particle flow |
-
2019
- 2019-09-19 CN CN201921559321.XU patent/CN211231835U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060695A1 (en) * | 2022-09-21 | 2024-03-28 | 北京航天石化技术装备工程有限公司 | Slide valve for conveying dense particle flow |
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