CN209839201U - Gate valve and stop valve combined system - Google Patents
Gate valve and stop valve combined system Download PDFInfo
- Publication number
- CN209839201U CN209839201U CN201920611212.1U CN201920611212U CN209839201U CN 209839201 U CN209839201 U CN 209839201U CN 201920611212 U CN201920611212 U CN 201920611212U CN 209839201 U CN209839201 U CN 209839201U
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- valve
- stop valve
- plate
- gate valve
- stop
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Abstract
A gate valve and stop valve combined system comprises a gate valve and a stop valve which are sequentially connected in series through a pipeline; the gate valve comprises a gate valve body, a gate valve rod, a gate valve cover, a first valve plate, a second valve plate and a double-hinge assembly, wherein the gate valve body comprises a first vertical plate and a second vertical plate which are parallel to each other, and a pair of inclined plates arranged between the first vertical plate and the second vertical plate; the stop valve includes stop valve body, stop valve gap, stop valve clack and is used for driving the stop valve clack and is linear motion's about being stop valve rod, is equipped with the stop valve disk seat in the stop valve body, and the stop valve clack is contradicted with the stop valve disk seat and is connected, and the stop valve clack is disc structure, and the stop valve clack includes integrated into one piece's round platform sealing, ring sealing, disc portion and is located the valve rod connecting portion on disc. The utility model discloses effectively reduce the impact of stop valve switch period medium instantaneous flow to the stop valve, effectively prolong the life of stop valve.
Description
Technical Field
The utility model relates to a valving field, concretely relates to gate valve and stop valve allies oneself with system.
Background
At present, the existing stop valve is often used directly during use, and the instantaneous medium flow during opening and closing of the existing stop valve is very large, so that the impact of the instantaneous medium flow on the stop valve during opening and closing of the stop valve is very large, and the service life of the stop valve is shortened.
Disclosure of Invention
The utility model aims at the above insufficiency, and provide a gate valve and stop valve antithetical couplet system.
The utility model comprises a gate valve and a stop valve which are connected in series in sequence through pipelines;
the gate valve comprises a gate valve body, a gate valve rod, a gate valve cover, a first valve plate, a second valve plate and a double-hinge assembly, wherein the gate valve body comprises a first vertical plate and a second vertical plate which are parallel to each other, and a pair of inclined plates arranged between the first vertical plate and the second vertical plate, a valve main runner is arranged in the middle of each inclined plate, the pair of inclined plates are symmetrically arranged along the gate valve rod, the top and the bottom of the gate valve body are both open, a blind plate is arranged at the opening at the bottom of the gate valve body, two side faces of the first valve plate and the second valve plate are in clearance fit with the first vertical plate and the second vertical plate,
the double-hinge component comprises a first hinge part, a second hinge part, a first pin shaft, a U-shaped connecting rod and a valve rod fixing part,
the first hinge part and the second hinge part are hinged through a first pin shaft, the first hinge part is fixedly connected with the first valve plate, the second hinge part is fixedly connected with the second valve plate, shaft sleeves are arranged at two ends of the U-shaped connecting rod, the U-shaped connecting rod is movably arranged on the first pin shaft through the shaft sleeves, the first hinge part and the second hinge part are positioned between a pair of shaft sleeves of the U-shaped connecting rod, the top of the U-shaped connecting rod is hinged with the bottom of the valve rod fixing part through a second pin shaft, and the top of the valve rod fixing part is fixedly connected with the valve rod of the gate;
the stop valve comprises a stop valve body, a stop valve cover, a stop valve clack and a stop valve rod for driving the stop valve clack to do vertical linear motion, a stop valve seat is arranged in the stop valve body, the stop valve clack is connected with the stop valve seat in an abutting mode, the stop valve clack is of a disc-shaped structure and comprises an integrally-formed round platform sealing part, a circular ring sealing part, a disc part and a valve rod connecting part located on the upper portion of the disc part, the edge of the lower surface of the disc part is provided with the circular ring sealing part, the circular ring sealing part and the disc part are coaxially arranged, the outer diameter of the circular ring sealing part is the same as the diameter of the disc part, and an arc-shaped; the middle part of the lower surface of the disc part is provided with the circular platform sealing part, the circular platform sealing part is of an inverted circular platform-shaped structure and is coaxially arranged with the disc part, the distance between the lower end of the arc-shaped protruding part and the lower surface of the disc part is smaller than the height of the circular platform sealing part, the maximum diameter of the circular platform sealing part is smaller than the inner diameter of the circular ring sealing part, so that a gap part is formed between the circular platform sealing part and the circular ring sealing part, an annular rubber sealing ring is contained in the gap part, the upper part of the annular rubber sealing ring is pasted on the lower surface of the disc part, and the thickness of the annular rubber sealing ring is smaller than the height of the circular ring sealing;
the stop valve comprises a stop valve seat, a circular truncated cone sealing part and a circular groove, wherein the circular truncated cone sealing part is matched with the circular truncated cone sealing part, the circular groove is matched with the circular truncated cone sealing part, the bottom of the circular groove is provided with an annular rubber gasket, and the top of the annular rubber gasket is inwards sunken to form an arc-shaped sunken part matched with the arc-shaped protruding part.
And rigid plastic coatings are coated on the inner walls of the gate valve body and the stop valve body.
A packing groove is formed in the valve cover of the stop valve, a flexible packing pad is arranged at the bottom of the packing groove, packing is filled in the packing groove, and a packing pressing sleeve and a packing pressing plate are arranged on the upper portion of the packing groove.
The depth of the annular groove is greater than the height of the annular rubber gasket.
The stop valve flap is arranged as follows: under the drive of the valve rod of the stop valve, when the arc-shaped protruding part is abutted against the arc-shaped recessed part, the circular truncated cone sealing part is in sealing fit with the sealing surface of the valve seat, and the annular rubber sealing ring is abutted against the upper surface of the valve seat of the stop valve.
The fit clearance between the two side faces of the first valve plate and the first vertical plate and between the two side faces of the second valve plate and the second vertical plate is 0.2-0.5mm, and the fit clearance between the two side faces of the second valve plate and the first vertical plate and between the two side faces of the second valve plate and the second vertical plate is 0.2-0.5 mm.
The central line of the second pin shaft is spatially vertical to the central line of the first pin shaft.
The utility model has the advantages that: when the valve is used in a working period, the stop valve is not opened completely, then the gate valve is opened, and then the opening degree of the stop valve is adjusted according to the flow demand; when the valve is closed, the gate valve is closed first, and then the stop valve is closed. Therefore, the impact of the medium instantaneous flow on the stop valve during the opening and closing of the stop valve can be effectively reduced, and the service life of the stop valve can be effectively prolonged. The gate valve part changes point contact into line contact, has long service life, is not easy to wear, is convenient to process and reduces the production cost. The stop valve part realizes the cooperation with the valve seat sealing surface of the stop valve seat, the annular groove and the annular rubber gasket through the design of the integrally formed circular platform sealing part, the circular ring sealing part and the circular disk part, and changes the single sealing of the conventional stop valve into multiple sealing, the circular platform sealing part is in sealing fit with the valve seat sealing surface of the stop valve, the annular rubber sealing ring is in contact with the upper surface of the stop valve seat for secondary sealing, the arc-shaped protruding part is in tight contact with the arc-shaped recessed part to realize tertiary sealing, and the sealing performance is effectively guaranteed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the relationship of a stop valve flap to a stop valve seat;
FIG. 3 is a schematic diagram of the structure of the valve flap of the stop valve;
FIG. 4 is a schematic structural view of an annular rubber seal ring;
FIG. 5 is a schematic cross-sectional view of an annular rubber seal ring;
FIG. 6 is a schematic cross-sectional view of an annular rubber gasket;
FIG. 7 is a schematic structural view of a gate valve;
FIG. 8 is a partially hidden structure of the gate valve;
FIG. 9 is a schematic view of the dual hinge assembly concealing the first valve plate.
Detailed Description
As shown in the attached drawings, the utility model comprises a gate valve and a stop valve which are connected in series in sequence through a pipeline;
the gate valve comprises a gate valve body 31, a gate valve rod 32, a gate valve cover 33, a first valve plate 34 and a second valve plate 35, and is characterized by further comprising a double-hinge assembly 44, wherein the gate valve body 31 comprises a first vertical plate 41 and a second vertical plate 42 which are parallel to each other, and a pair of inclined plates 43 arranged between the first vertical plate 41 and the second vertical plate 42, a valve main flow channel is arranged in the middle of each inclined plate 43, the pair of inclined plates 43 are symmetrically arranged along the gate valve rod 32, the top and the bottom of the gate valve body 31 are both open, a blind plate 46 is arranged at the bottom opening of the gate valve body 31, two side faces of the first valve plate 34 and the second valve plate 35 are in clearance fit with the first vertical plate 41 and the second vertical plate 42,
the double hinge assembly 44 includes a first hinge part 36, a second hinge part 37, a first pin 38, a U-shaped link 39 and a valve stem fixing part 40,
the first hinge part 36 and the second hinge part 37 are hinged through a first pin shaft 38, the first hinge part 36 is fixedly connected with the first valve plate 34, the second hinge part 37 is fixedly connected with the second valve plate 35, shaft sleeves are arranged at two ends of the U-shaped connecting rod 39, the U-shaped connecting rod 39 is movably arranged on the first pin shaft 38 through the shaft sleeves, the first hinge part 36 and the second hinge part 37 are positioned between a pair of shaft sleeves of the U-shaped connecting rod 39, the top of the U-shaped connecting rod 39 is hinged with the bottom of the valve rod fixing part 40 through a second pin shaft 45, and the top of the valve rod fixing part 40 is fixedly connected with the gate valve rod 32;
the stop valve comprises a stop valve body 1, a stop valve bonnet 2, a stop valve clack 3 and a stop valve rod 4 used for driving the stop valve clack 3 to do vertical linear motion, a stop valve seat 5 is arranged in the stop valve body 1, the stop valve clack 3 is in conflict connection with the stop valve seat 5, the stop valve clack 3 is of a disc-shaped structure, the stop valve clack 3 comprises an integrally formed circular table sealing part 6, a circular ring sealing part 7, a disc part 8 and a valve rod connecting part 20 located on the upper part of the disc part 8, the edge of the lower surface of the disc part 8 is provided with the circular ring sealing part 7, the circular ring sealing part 7 and the disc part 8 are coaxially arranged, the outer diameter of the circular ring sealing part 7 is the same as that of the disc part 8, and the lower part of; the middle of the lower surface of the disc part 8 is provided with the circular truncated cone sealing part 6, the circular truncated cone sealing part 6 is of an inverted circular truncated cone-shaped structure and is coaxially arranged with the disc part 8, the distance between the lower end of the arc-shaped protruding part 9 and the lower surface of the disc part 8 is smaller than the height of the circular truncated cone sealing part 6, the maximum diameter of the circular truncated cone sealing part 6 is smaller than the inner diameter of the circular ring sealing part 7, so that a gap part is formed between the circular truncated cone sealing part 6 and the circular ring sealing part 7, an annular rubber sealing ring 10 is contained in the gap part, the upper part of the annular rubber sealing ring 10 is adhered to the lower surface of the disc part 8, and the thickness of the annular rubber sealing ring 10 is smaller than the height of;
the stop valve comprises a stop valve seat 5 and is characterized in that a valve seat sealing surface matched with the circular truncated cone sealing part 6 is arranged on the stop valve seat 5, an annular groove 11 matched with the circular annular sealing part 7 is further formed in the stop valve seat 5, an annular rubber gasket 12 is arranged at the bottom of the annular groove 11, and the top of the annular rubber gasket 12 is inwards sunken to form an arc-shaped sunken part 13 matched with the arc-shaped protruding part 9.
And rigid plastic coatings are coated on the inner walls of the gate valve body 31 and the stop valve body 1.
A packing groove 21 is formed in the stop valve cover 2, a flexible packing pad 22 is arranged at the bottom of the packing groove 21, packing is filled in the packing groove 21, and a packing pressing sleeve 23 and a packing pressing plate 24 are arranged on the upper portion of the packing groove 21.
The depth of the annular groove 11 is greater than the height of the annular rubber gasket 12.
The stop valve flap 3 is arranged such that: under the drive of the stop valve rod 4, when the arc-shaped protruding part 9 abuts against the arc-shaped recessed part 13, the circular truncated cone sealing part 6 is in sealing fit with the valve seat sealing surface, and the annular rubber sealing ring 10 abuts against the upper surface of the stop valve seat 5.
The fit clearance between the two side faces of the first valve plate 34 and the first vertical plate 41 and the second vertical plate 42 is 0.2-0.5mm, and the fit clearance between the two side faces of the second valve plate 35 and the first vertical plate 41 and the second vertical plate 42 is 0.2-0.5 mm.
The center line of the second pin 45 is perpendicular to the center line of the first pin 38.
The working mode is as follows: when the valve is used in a working period, the stop valve is not opened completely, then the gate valve is opened, and then the opening degree of the stop valve is adjusted according to the flow demand; when the stop valve is closed, the gate valve is closed first, and then the stop valve is closed, so that the impact of the instantaneous medium flow on the stop valve during the opening and closing of the stop valve can be effectively reduced, and the service life of the stop valve is effectively prolonged. When the gate valve needs to be closed, the gate valve rod 32 drives the first valve plate 4 and the second valve plate 5 to move downwards to be inserted into the bottom of the gate valve body 1, the first valve plate 4 and the second valve plate 5 form a wedge shape to seal the inner cavity of the gate valve body 1, the double-hinge assembly 44 enables the first valve plate 4 and the second valve plate 5 to slightly swing from front to back and from left to right, the jamming is prevented, the inner walls of the first vertical plate 11 and the second vertical plate 12 play a role in guiding the first valve plate 4 and the second valve plate 5, and the gate valve plate is prevented from being dislocated when the hand wheel is rotated. Through the design of integrated into one piece's round platform sealing 6, ring seal 7 and disc portion 8, realize with the cooperation of the sealed face of valve seat, annular groove 11, annular rubber packing ring 12 of stop valve disk seat 5, under the drive of stop valve rod 4, work as arc bellying 9 with when arc depressed part 13 offsets tightly, round platform sealing 6 with the sealed face seal fit of valve seat, annular rubber packing ring 10 offsets with the upper surface of stop valve disk seat 5, changes the single sealed of conventional stop valve into many times sealed, and round platform sealing 6 and the sealed face seal fit of stop valve disk seat, annular rubber packing ring 12 offsets with the upper surface of stop valve disk seat 5 and carries out secondary seal, arc bellying 9 with arc depressed part 13 offsets tightly to realize the cubic and seals, has effectively guaranteed sealing performance.
Claims (7)
1. A gate valve and stop valve combined system is characterized by comprising a gate valve and a stop valve which are sequentially connected in series through a pipeline;
the gate valve comprises a gate valve body (31), a gate valve rod (32), a gate valve cover (33), a first valve plate (34) and a second valve plate (35), and is characterized by further comprising a double-hinge assembly (44), wherein the gate valve body (31) comprises a first vertical plate (41) and a second vertical plate (42) which are parallel to each other, and a pair of inclined plates (43) arranged between the first vertical plate (41) and the second vertical plate (42), a valve main flow passage is arranged in the middle of each inclined plate (43), the pair of inclined plates (43) are symmetrically arranged along the gate valve rod (32), the top and the bottom of the gate valve body (31) are both open, a blind plate (46) is arranged at an opening at the bottom of the gate valve body (31), two side faces of the first valve plate (34) and the second valve plate (35) are in clearance fit with the first vertical plate (41) and the second vertical plate (42),
the double hinge assembly (44) comprises a first hinge part (36), a second hinge part (37), a first pin shaft (38), a U-shaped connecting rod (39) and a valve rod fixing part (40),
the first hinge part (36) and the second hinge part (37) are hinged through a first pin shaft (38), the first hinge part (36) is fixedly connected with the first valve plate (34), the second hinge part (37) is fixedly connected with the second valve plate (35), shaft sleeves are arranged at two ends of a U-shaped connecting rod (39), the U-shaped connecting rod (39) is movably arranged on the first pin shaft (38) through the shaft sleeves, the first hinge part (36) and the second hinge part (37) are positioned between a pair of shaft sleeves of the U-shaped connecting rod (39), the top of the U-shaped connecting rod (39) is hinged with the bottom of a valve rod fixing part (40) through a second pin shaft (45), and the top of the valve rod fixing part (40) is fixedly connected with a gate valve rod (32);
the stop valve comprises a stop valve body (1), a stop valve cover (2), a stop valve clack (3) and a stop valve rod (4) used for driving the stop valve clack (3) to do vertical linear motion, wherein a stop valve seat (5) is arranged in the stop valve body (1), the stop valve clack (3) is in conflict connection with the stop valve seat (5), the stop valve clack (3) is of a disc-shaped structure, the stop valve clack (3) comprises an integrally formed circular table sealing part (6), a circular ring sealing part (7), a disc part (8) and a valve rod connecting part (20) positioned at the upper part of the disc part (8), the edge of the lower surface of the disc part (8) is provided with the circular ring sealing part (7), the circular ring sealing part (7) is coaxially arranged with the disc part (8), and the outer diameter of the circular ring sealing part (7) is the same, the lower part of the circular ring sealing part (7) is provided with an arc-shaped bulge part (9); the middle of the lower surface of the disc part (8) is provided with the circular table sealing part (6), the circular table sealing part (6) is of an inverted circular table-shaped structure and is coaxially arranged with the disc part (8), the distance between the lower end of the arc-shaped protruding part (9) and the lower surface of the disc part (8) is smaller than the height of the circular table sealing part (6), the maximum diameter of the circular table sealing part (6) is smaller than the inner diameter of the circular ring sealing part (7) so that a gap part is formed between the circular table sealing part (6) and the circular ring sealing part (7), an annular rubber sealing ring (10) is contained in the gap part, the upper part of the annular rubber sealing ring (10) is pasted on the lower surface of the disc part (8), and the thickness of the annular rubber sealing ring (10) is smaller than the height of the circular ring sealing part (7);
the stop valve is characterized in that a valve seat sealing surface matched with the circular truncated cone sealing part (6) is arranged on the stop valve seat (5), an annular groove (11) matched with the circular ring sealing part (7) is further formed in the stop valve seat (5), an annular rubber gasket (12) is arranged at the bottom of the annular groove (11), and the top of the annular rubber gasket (12) is inwards sunken to form an arc-shaped sunken part (13) matched with the arc-shaped protruding part (9).
2. A gate valve and shut-off valve combination system according to claim 1, characterised in that the inner walls of the gate valve body (31) and the shut-off valve body (1) are coated with a rigid plastic coating.
3. The combined system of the gate valve and the stop valve as claimed in claim 1, wherein a packing groove (21) is formed in the valve cover (2) of the stop valve, a flexible packing pad (22) is arranged at the bottom of the packing groove (21), packing is filled in the packing groove (21), and a packing pressing sleeve (23) and a packing pressing plate (24) are arranged at the upper part of the packing groove (21).
4. A gate valve and shut-off valve combination system according to claim 1, characterised in that the depth of the annular groove (11) is greater than the height of the annular rubber gasket (12).
5. A gate valve and shut-off valve combination system according to claim 1, characterised in that the shut-off valve flap (3) is arranged to: under the drive of the stop valve rod (4), when the arc-shaped protruding part (9) is tightly abutted to the arc-shaped recessed part (13), the circular truncated cone sealing part (6) is in sealing fit with the valve seat sealing surface, and the annular rubber sealing ring (10) is abutted to the upper surface of the stop valve seat (5).
6. A gate valve and stop valve combination system according to claim 1, wherein the fit clearance between the two side faces of the first valve plate (34) and the first vertical plate (41) and the second vertical plate (42) is 0.2-0.5mm, and the fit clearance between the two side faces of the second valve plate (35) and the first vertical plate (41) and the second vertical plate (42) is 0.2-0.5 mm.
7. A gate valve and shut-off valve combination as claimed in claim 1, wherein the second pin (45) has a centre line which is spatially perpendicular to the centre line of the first pin (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920611212.1U CN209839201U (en) | 2019-04-30 | 2019-04-30 | Gate valve and stop valve combined system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920611212.1U CN209839201U (en) | 2019-04-30 | 2019-04-30 | Gate valve and stop valve combined system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209839201U true CN209839201U (en) | 2019-12-24 |
Family
ID=68915388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920611212.1U Expired - Fee Related CN209839201U (en) | 2019-04-30 | 2019-04-30 | Gate valve and stop valve combined system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209839201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889232A (en) * | 2024-03-15 | 2024-04-16 | 阳泉阀门股份有限公司 | Regulating valve for high-pressure hydrogen and regulating method thereof |
-
2019
- 2019-04-30 CN CN201920611212.1U patent/CN209839201U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889232A (en) * | 2024-03-15 | 2024-04-16 | 阳泉阀门股份有限公司 | Regulating valve for high-pressure hydrogen and regulating method thereof |
| CN117889232B (en) * | 2024-03-15 | 2024-05-28 | 阳泉阀门股份有限公司 | Regulating valve for high-pressure hydrogen and regulating method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20210430 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |