CN110953358A - Stop valve for conveying medium containing granular substances - Google Patents
Stop valve for conveying medium containing granular substances Download PDFInfo
- Publication number
- CN110953358A CN110953358A CN201911325154.7A CN201911325154A CN110953358A CN 110953358 A CN110953358 A CN 110953358A CN 201911325154 A CN201911325154 A CN 201911325154A CN 110953358 A CN110953358 A CN 110953358A
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- China
- Prior art keywords
- valve
- valve rod
- groove
- rod
- column
- Prior art date
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- 239000000126 substance Substances 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 9
- 239000013618 particulate matter Substances 0.000 claims abstract description 8
- 238000012856 packing Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000004891 communication Methods 0.000 abstract description 2
- 230000013011 mating Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000003116 impacting effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/246—Combination of a sliding valve and a lift valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Lift Valve (AREA)
Abstract
The invention belongs to the technical field of instruments and meters, and particularly relates to a stop valve for conveying a medium containing granular substances, which comprises a valve body, a valve cover, a hand wheel, sealing filler, a valve rod nut, a circulation cavity, a liquid inlet cavity, a liquid outlet cavity and a communication hole; the valve rod comprises an upper valve rod, a lower valve rod and a connecting valve rod, a columnar hole and a columnar groove are formed in the lower valve rod, and the connecting valve rod is elastically connected with the bottom of the columnar groove; the valve seat is provided with an annular groove, and the bottom of the valve clack is provided with a clamping groove and an annular bulge; an annular fixing piece is arranged in the communicating hole, the bottom of the annular fixing piece is connected with the filter screen, and the annular fixing piece is elastically connected with the valve seat. Compared with the prior art, the invention has the following advantages: the device simple structure is reasonable, avoids the particulate matter to pile up on the disk seat surface, through setting up annular groove, screens groove and the protruding mating reaction of annular, compares current planar seal and has increased vertical sealed face, can guarantee the inseparable combination of valve clack and disk seat, and then guarantees the leakproofness.
Description
Technical Field
The invention belongs to the technical field of instruments and meters, and particularly relates to a stop valve for conveying a medium containing particles.
Background
The stop valve is mainly used in the clarification treatment process flow in the production process, and has the advantages of small friction force of a sealing surface in the opening and closing process, durability, small opening height, easy manufacture, convenient maintenance and suitability for high pressure and low pressure, so the stop valve is widely applied to the automatic production field, such as the fields of sugar manufacturing, medical food, petrochemical industry, lubricating oil, energy conservation, emission reduction and the like; the stop valve is usually used for sealing the communicating hole by matching the valve clack and the valve seat, and the valve seat is fixedly arranged in the communicating hole, so that if silt and hard particles exist in a medium, the silt and the hard particles are easily precipitated on a sealing surface of the valve seat, the valve seat and the valve clack cannot be tightly sealed, and the normal use of the stop valve is influenced; in order to solve this problem among the prior art, set up the brush hair on the valve clack, clean precipitative silt to improve the leakproofness between valve clack and the disk seat, but the clean dynamics of uncontrollable brush hair causes wearing and tearing easily, still can't guarantee its leakproofness finally, consequently, how to improve the stop valve that is used for transmitting the medium that contains the particulate matter and need further research.
Disclosure of Invention
The invention aims to provide a stop valve for conveying a medium containing particles, aiming at the problems that the existing stop valve for conveying the medium containing particles is difficult to ensure the sealing property between a valve clack and a valve seat or a hairbrush is easy to wear after the hairbrush is arranged.
The invention is realized by the following technical scheme: a stop valve for conveying media containing granular substances comprises a valve body, wherein a circulation cavity is formed in the valve body, a valve cover is fixedly connected to the valve body, sealing filler is arranged in the valve cover, a valve rod nut is fixed above the valve cover through a support, a valve rod penetrates through the valve rod nut, the sealing filler and the valve cover and then extends into the circulation cavity of the valve body, a hand wheel is arranged at the top of the valve rod, a valve clack is fixedly connected to the bottom of the valve rod, and an elastic sealing layer is arranged on the; a liquid inlet cavity and a liquid outlet cavity are arranged on two sides of the valve body, a valve seat matched with the valve clack is arranged between the liquid inlet cavity and the circulation cavity, a vertically-arranged communicating hole is formed in the valve seat, the valve rod comprises an upper valve rod and a lower valve rod, the upper valve rod and the lower valve rod are connected through a connecting valve rod, the upper end of the connecting valve rod is fixed with the upper valve rod through a connecting block, a limiting block is arranged at the bottom of the connecting valve rod, a cylindrical hole matched with the connecting valve rod is formed in the top of the lower valve rod, a cylindrical groove matched with the limiting block is connected to the bottom of the cylindrical hole, the limiting block can move up and down in the cylindrical groove, and the;
the valve seat is provided with an annular groove with an upward opening, the bottom of the valve clack is provided with a clamping groove with a downward opening and an annular bulge, and the clamping groove and the annular bulge are matched with the valve seat structure;
the filter screen is connected to the bottom of the annular fixing part, the side face of the annular fixing part is provided with a connecting rod, the connecting rod can move up and down in the connecting groove, the other end of the connecting rod is connected with the column-shaped limiting column, and the top end of the column-shaped limiting column is connected with the top of the connecting groove through a spring group II.
In order to protect the second spring group, a sealing element is arranged on the part, located on the periphery of the column-shaped limiting column, of the upper side of the column-shaped limiting groove; the rubber gasket is arranged at the bottom of the columnar limiting groove, so that overlarge impact force between the columnar limiting column and the columnar limiting groove can be avoided; the spring group II is reasonably arranged, so that the filter screen has a certain buffering effect under the action of medium impact, and the filter screen is prevented from being damaged by the medium; the filter screen is a spherical filter screen protruding downwards, so that the filter area of the medium can be effectively increased; the connecting rod is positioned at the uppermost side of the connecting groove, and when the valve clack is closely abutted with the valve seat, a gap is formed between the annular fixing piece and the lowest end of the valve clack, so that the annular fixing piece can be prevented from impacting the valve clack when moving up and down; when the valve clack is tightly abutted to the valve seat, the top surface of the lower valve rod is higher than the sealing filler, so that the sealing effect can be ensured.
Compared with the prior art, the invention has the following advantages: by arranging the filter screen, overlarge granular substances in a medium can be effectively filtered preliminarily, so that the accumulation of the substances on the surface of the valve seat is avoided; then, by arranging the second spring group and the column-shaped limiting column, the annular fixing piece and the filter screen can move up and down in the communicating hole, so that a buffering effect is achieved in the medium conveying process, and the filter screen is prevented from being damaged by excessive impact of a medium on the filter screen; through the matching effect of the annular groove, the clamping groove and the annular bulge, compared with the existing plane seal, the vertical sealing surface is added, so that the valve clack and the valve seat have a plurality of contact surfaces when being cut off, and a better sealing effect can be realized even if the bottom of the valve clack cannot be abutted against the top of the valve seat; through setting up valve rod, lower valve rod and connecting the valve rod cooperation, make the valve rod have certain elasticity in vertical direction, can guarantee the inseparable combination of valve clack and disk seat, and then guarantee the leakproofness.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the spring assembly in a natural state.
Fig. 3 is a schematic structural diagram of the second spring set in a pressing state.
Fig. 4 is an enlarged view at a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, a stop valve for conveying media containing particulate matters comprises a valve body 1, a circulation chamber 14 is arranged in the valve body 1, a valve cover 33 is fixedly connected to the valve body 1, a sealing filler 32 is arranged in the valve cover 33, a valve rod nut 34 is fixed above the valve cover 33 by a support, a valve rod penetrates through the valve rod nut 34, the sealing filler 32 and the valve cover 33 and then extends into the circulation chamber 14 of the valve body 1, a hand wheel 35 is arranged at the top of the valve rod, a valve clack 4 is fixedly connected to the bottom of the valve rod, and an elastic sealing layer 41 is arranged on the surface; a liquid inlet cavity 11 and a liquid outlet cavity 12 are arranged on two sides of the valve body 1, a valve seat (not shown in the figure) matched with the valve clack 4 is arranged between the liquid inlet cavity 11 and the circulation cavity 14, a vertically-arranged communication hole 13 is arranged in the valve seat, the valve rod comprises an upper valve rod 21 and a lower valve rod 22, the upper valve rod 21 and the lower valve rod 22 are connected through a connecting valve rod 23, the upper end of the connecting valve rod 23 is fixed with the upper valve rod 21 through a connecting block 231, a limiting block 232 is arranged at the bottom of the connecting valve rod 23, a column-shaped hole 221 matched with the connecting valve rod 23 is arranged at the top of the lower valve rod 22, the bottom of the column-shaped hole 221 is connected with a column-shaped groove 222 matched with the limiting block 232, the limiting block 232 can move up and down;
the valve seat is provided with an annular groove 16 with an upward opening, the bottom of the valve clack 4 is provided with a clamping groove 42 with a downward opening and an annular bulge 43, and the clamping groove 42 and the annular bulge 43 are matched with the valve seat structure;
be equipped with the spread groove 18 that a plurality of levels set up on the lateral wall of intercommunicating pore 13, the interior intercommunication post type spacing groove 17 of spread groove 18 is equipped with the annular mounting 5 that matches with the intercommunicating pore in intercommunicating pore 13, filter screen 51 is connected to annular mounting 5 bottom, and the 5 sides of annular mounting are equipped with connecting rod 52, connecting rod 52 can reciprocate in spread groove 18, the other end of connecting rod 52 connects the spacing post 53 of post type, the spacing post 53 top of post type is connected with spread groove 17 top through spring assembly two 54.
In order to protect the second spring set 54, a sealing element 19 is arranged on the part, located on the periphery of the column-shaped limiting column 53, of the upper side of the column-shaped limiting groove 17; the rubber gasket 55 is arranged at the bottom of the column-shaped limiting groove 17, so that overlarge impact force between the column-shaped limiting column 53 and the column-shaped limiting groove 17 can be avoided; the bottom of the column-shaped limiting column 53 is abutted to the bottom of the column-shaped limiting groove 17 when the spring set II 54 is in a natural state, and the spring set II 54 is reasonably arranged, so that the filter screen 51 has a certain buffering effect under the action of medium impact, and the filter screen 51 is prevented from being damaged by a medium; the filter screen 51 is a spherical filter screen protruding downwards, so that the filter area of the medium can be effectively increased; the connecting rod 52 is positioned at the uppermost side of the connecting groove 18, and when the valve clack 4 is closely abutted with the valve seat, a gap is formed between the annular fixing piece 5 and the lowest end of the valve clack 4, so that the annular fixing piece 5 can be prevented from impacting the valve clack 4 when moving up and down; when the valve clack 4 is tightly abutted to the valve seat, the top surface of the lower valve rod 22 is higher than the sealing filler 32, so that the sealing effect can be ensured.
When the filter screen 51 is used, overlarge granular substances in a medium can be effectively filtered preliminarily, and the accumulation of the substances on the surface of the valve seat is avoided; then, by arranging the second spring group 54 and the column-shaped limiting column 53, the annular fixing piece 5 and the filter screen 51 can move up and down in the communicating hole 13, so that a buffering effect is achieved in the medium conveying process, and the filter screen 51 is prevented from being damaged by medium impacting excessively; through the matching effect of the annular groove 16, the clamping groove 42 and the annular bulge 43, compared with the existing plane seal, the vertical sealing surface is increased, so that the valve clack 4 and the valve seat have a plurality of contact surfaces when being cut off, and a better sealing effect can be realized even if the bottom of the valve clack 4 cannot be abutted against the top of the valve seat; through setting up valve rod 21, lower valve rod 22 and connecting valve rod 23 cooperation, make the valve rod have certain elasticity in vertical direction, can guarantee the inseparable combination of valve clack 4 and disk seat, and then guarantee the leakproofness.
The device is simple and reasonable, is convenient to use, can avoid the influence of medium particles on closure tightness, can weaken the abrasion of the particles on the stop valve, and is convenient to maintain and use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A stop valve for conveying media containing granular substances comprises a valve body, wherein a circulation cavity is formed in the valve body, a valve cover is fixedly connected to the valve body, sealing filler is arranged in the valve cover, a valve rod nut is fixed above the valve cover through a support, a valve rod penetrates through the valve rod nut, the sealing filler and the valve cover and then extends into the circulation cavity of the valve body, a hand wheel is arranged at the top of the valve rod, a valve clack is fixedly connected to the bottom of the valve rod, and an elastic sealing layer is arranged on the; the valve body is characterized in that the valve rod comprises an upper valve rod and a lower valve rod, the upper valve rod and the lower valve rod are connected through a connecting valve rod, the upper end of the connecting valve rod is fixed with the upper valve rod through a connecting block, a limiting block is arranged at the bottom of the connecting valve rod, a column-shaped hole matched with the connecting valve rod is formed in the top of the lower valve rod, the bottom of the column-shaped hole is connected with a column-shaped groove matched with the limiting block, the limiting block can move up and down in the column-shaped groove, and the bottom of the limiting block is connected with the bottom of the column-shaped groove through a spring assembly I;
the valve seat is provided with an annular groove with an upward opening, the bottom of the valve clack is provided with a clamping groove with a downward opening and an annular bulge, and the clamping groove and the annular bulge are matched with the valve seat structure;
the filter screen is connected to the bottom of the annular fixing part, the side face of the annular fixing part is provided with a connecting rod, the connecting rod can move up and down in the connecting groove, the other end of the connecting rod is connected with the column-shaped limiting column, and the top end of the column-shaped limiting column is connected with the top of the connecting groove through a spring group II.
2. The shut-off valve for transporting a medium containing particulate matter according to claim 1, wherein a sealing member is provided on a portion of the upper side of the cylindrical restraint groove located on the outer periphery of the cylindrical restraint cylinder.
3. The shut-off valve for transporting a medium containing particulate matter of claim 1, wherein a rubber gasket is provided at the bottom of said cylindrical stopper groove.
4. The stop valve for transporting a medium containing particulate matter as claimed in claim 1, wherein said second spring set is such that the bottom of said cylindrical limiting post abuts against the bottom of said cylindrical limiting groove in a natural state.
5. A shut-off valve for the delivery of particulate matter-containing media as claimed in claim 1 wherein said screen is a downwardly convex spherical screen.
6. A stop valve for transporting particulate matter-containing media as claimed in claim 1 wherein the connecting rod is located on the uppermost side of the connecting channel and the annular retaining member is spaced from the lowermost end of the valve flap when the valve flap is in close abutment with the valve seat.
7. The shut-off valve for transporting media containing particulate matter of claim 1 wherein the top surface of the lower stem is above the packing when the valve flap is in close abutment with the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911325154.7A CN110953358A (en) | 2019-12-20 | 2019-12-20 | Stop valve for conveying medium containing granular substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911325154.7A CN110953358A (en) | 2019-12-20 | 2019-12-20 | Stop valve for conveying medium containing granular substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110953358A true CN110953358A (en) | 2020-04-03 |
Family
ID=69983331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911325154.7A Withdrawn CN110953358A (en) | 2019-12-20 | 2019-12-20 | Stop valve for conveying medium containing granular substances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110953358A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074257A (en) * | 2021-04-07 | 2021-07-06 | 沪航科技集团有限公司 | Stop valve with filtration |
-
2019
- 2019-12-20 CN CN201911325154.7A patent/CN110953358A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074257A (en) * | 2021-04-07 | 2021-07-06 | 沪航科技集团有限公司 | Stop valve with filtration |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200403 |