CN116006736A - Axial flow type check valve - Google Patents
Axial flow type check valve Download PDFInfo
- Publication number
- CN116006736A CN116006736A CN202310025118.9A CN202310025118A CN116006736A CN 116006736 A CN116006736 A CN 116006736A CN 202310025118 A CN202310025118 A CN 202310025118A CN 116006736 A CN116006736 A CN 116006736A
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- valve body
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- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses an axial flow check valve, which relates to the field of valves and comprises a valve cover, a valve body, a valve clack and a valve rod, wherein the valve cover comprises a front valve cover and a rear valve cover, a piston assembly in sealing fit is arranged in the valve body, and the piston assembly comprises: a front cylinder block and a rear cylinder block fixedly installed in the valve body; a piston cylinder which is mounted between the front cylinder block and the rear cylinder block in a sealing and clamping manner; the piston piece is fixedly sleeved on the valve rod and is slidably arranged in the piston cylinder; and a cooling flow passage for taking away heat of sealing parts at all positions is arranged in the piston cylinder. The invention has the advantages of prolonging the service life and improving the working stability.
Description
Technical Field
The invention relates to the field of valves, in particular to an axial flow check valve.
Background
The ultra-high temperature air flow at the outlet end of the heating furnace in the fields of petroleum, chemical industry, coal chemical industry, polysilicon and the like has high temperature, contains solid particles and has lower pressure, such as an axial flow check valve disclosed in publication No. CN217842816U 2022-11-18, and the normal operation is often influenced because the valve clack (2) is not opened due to low pressure pushing.
Disclosure of Invention
In order to overcome the defects of the background technology, the invention provides the axial flow check valve which prolongs the service life and improves the working stability.
The invention adopts the technical scheme that: an axial flow check valve, its includes valve gap, valve body, valve clack and valve rod, the valve gap includes preceding valve gap and back valve gap, be equipped with sealed complex piston assembly in the valve body, piston assembly includes:
a front cylinder block and a rear cylinder block fixedly installed in the valve body;
a piston cylinder which is mounted between the front cylinder block and the rear cylinder block in a sealing and clamping manner;
the piston piece is fixedly sleeved on the valve rod and is slidably arranged in the piston cylinder;
and a cooling flow passage for taking away heat of sealing parts at all positions is arranged in the piston cylinder.
The cooling flow passage includes:
a water inlet passage provided in the front cylinder block;
a first annular channel disposed within the front cylinder block and disposed around the valve stem;
the spiral ring groove is positioned on the outer wall of the piston cylinder and corresponds to the movement stroke of the piston member;
a second annular channel disposed within the following cylinder block and disposed around the valve stem;
a water outlet passage provided in the following cylinder block;
the water inlet channel, the first annular channel, the spiral ring groove, the second annular channel and the water outlet channel are sequentially communicated.
The valve body is internally provided with a mounting seat for mounting the piston assembly, the mounting seat is hollow cylinder-shaped, a space for medium circulation is reserved between the outer wall of the mounting seat and the inner wall of the valve body, and a plurality of connecting ribs for connecting the mounting seat and the valve body are arranged between the mounting seat and the inner wall of the valve body.
The spiral ring groove is formed by arranging a tightly attached spring between the inner wall of the mounting seat and the outer wall of the piston cylinder.
The front cylinder seat and the rear cylinder seat are fixedly arranged on the mounting seat, the shapes of the front cylinder seat and the rear cylinder seat are matched with those of the mounting seat, and the outer wall of the valve body is provided with a water passage interface seat communicated with the water inlet passage and the water outlet passage.
A buffer mechanism is arranged between the left valve cover and the valve clack, and the buffer mechanism comprises:
the guide rod is fixedly arranged on one side end face of the valve clack;
the guide sleeve is fixedly arranged in the left valve cover and is in sliding fit with the guide rod;
the guide sleeve is provided with a first through hole positioned at the side wall and a second through hole positioned at the end part, the second through hole is provided with a screw-thread matched adjusting screw, and the side wall of the second through hole is provided with a third through hole communicated with the outside.
A graphite sealing ring is arranged between the front cylinder seat and the valve rod, and a pressing plate for fixing the graphite sealing ring is arranged on the front cylinder seat.
The front cylinder seat and the rear cylinder seat are respectively provided with a gas channel communicated with the interior of the piston cylinder; and the outer wall of the valve body is provided with a ventilation interface seat communicated with the gas channel.
The first annular channel and the second annular channel are internally provided with a partition board, and two sides of the partition board are provided with a water inlet and a water outlet.
The beneficial effects of the invention are as follows: according to the technical scheme, the valve clack is pushed open by the power provided by the piston assembly, so that the check valve works normally, in addition, the check valve of the technical scheme is applied to a high-temperature environment, and the material of the sealing ring cannot resist high temperature, so that the heat of sealing positions at all positions is taken away by arranging the cooling channel, the temperature around the cooling channel is reduced, the service life is prolonged, and the working stability is improved.
Drawings
Fig. 1 is a schematic structural view of an axial flow type check valve according to an embodiment of the present invention.
Fig. 2 is a schematic diagram showing a disassembled structure of an axial flow type check valve according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of an axial flow check valve according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view at a in fig. 3.
Fig. 5 is a cross-sectional view at B in fig. 3.
Fig. 6 is a schematic structural view of the valve body.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
as shown in the figure, an axial flow check valve comprises a valve cover, a valve body 1, a valve clack 2 and a valve rod 3, wherein the valve cover comprises a front valve cover 4 and a rear valve cover 5, a piston assembly in sealing fit is arranged in the valve body 1, and the piston assembly comprises:
a front cylinder block 6 and a rear cylinder block 7 fixedly mounted in said valve body 1;
a piston cylinder 8 sealingly clamped between the front cylinder block 6 and the rear cylinder block 7;
the piston piece 9 is fixedly sleeved on the valve rod 3 and is slidably arranged in the piston cylinder 8;
a cooling flow passage for taking away heat of sealing parts at all positions is arranged in the piston cylinder 8; according to the technical scheme, the valve clack is pushed open by the power provided by the piston assembly, so that the check valve works normally, in addition, the check valve of the technical scheme is applied to a high-temperature environment, and the material of the sealing ring cannot resist high temperature, so that the heat of sealing positions at all positions is taken away by arranging the cooling channel, the temperature around the cooling channel is reduced, the service life is prolonged, and the working stability is improved.
The cooling flow passage includes:
a water inlet passage 10 provided in the front cylinder block 6;
a first annular channel 11, which is arranged in the front cylinder block 6 and around the valve stem 3;
a spiral ring groove 12 which is positioned on the outer wall of the piston cylinder 8 and corresponds to the movement stroke of the piston member 9;
a second annular channel 13 provided in the following cylinder block 7 and around the valve stem 3;
a water outlet channel 14, which is arranged in the following cylinder block 7.
The water inlet channel 10, the first annular channel 11, the spiral ring groove 12, the second annular channel 13 and the water outlet channel 14 are communicated in sequence; the cooling water enters the first annular channel through the water inlet channel, the first annular channel is arranged around the sealing ring and can take away all heat in the circumferential direction of the sealing ring, then the cooling water enters the spiral ring groove, the cooling water can only circularly flow along the spiral ring groove, the cooling water flow is long, heat absorption is sufficient, the cooling effect is good, heat is taken away through the second annular channel, and finally the cooling water is discharged from the water outlet channel.
The first annular channel 11 and the second annular channel 13 are internally provided with a partition plate 29, and two sides of the partition plate 29 are provided with a water inlet 30 and a water outlet 31; the cooling water entering the annular channel can flow for a circle and then is discharged from the water outlet, and heat is fully taken away.
The valve body 1 is internally provided with a mounting seat 15 for mounting a piston assembly, the mounting seat 15 is hollow and cylindrical, a space for medium circulation is reserved between the outer wall of the mounting seat 15 and the inner wall of the valve body 1, a plurality of connecting ribs 16 for connecting the mounting seat and the inner wall of the valve body 1 are also arranged between the mounting seat and the mounting seat, the front cylinder seat 6 and the rear cylinder seat 7 are fixedly mounted on the mounting seat 15, the shapes of the front cylinder seat 6 and the rear cylinder seat 7 are matched with the shape of the mounting seat 15, and a water-through interface seat 18 for communicating the water inlet channel 10 and the water outlet channel 14 is mounted on the outer wall of the valve body 1; as shown in fig. 2, the space between the outer wall of the mounting seat 15 and the inner wall of the valve body 1 can allow medium to circulate, and the front cylinder seat 6 and the rear cylinder seat 7 can not block the medium, so that the flow and the flow resistance of the medium are not affected.
The spiral ring groove 12 is formed by arranging a spring 17 closely attached between the inner wall of the mounting seat 15 and the outer wall of the piston cylinder 8; the cooling water flows circularly.
A buffer mechanism is arranged between the left valve cover and the valve clack 2, and the buffer mechanism comprises:
a guide rod 19 fixedly installed at one end surface of the valve flap 2;
the guide sleeve 20 is fixedly arranged in the left valve cover and is in sliding fit with the guide rod 19;
the guide sleeve 20 is provided with a first through hole 21 positioned at the side wall and a second through hole 22 positioned at the end part, the second through hole 22 is provided with an adjusting screw 23 in threaded fit, and the side wall of the second through hole 22 is provided with a third through hole 24 communicated with the outside; the valve clack 2 is enabled to act stably through the cooperation of the guide rod 19 and the guide sleeve 20; by arranging the adjusting screw, the advancing speed of the valve clack 2 when the valve clack is close to sealing can be adjusted, so that impact vibration is prevented; in addition, to prevent particles from entering the guide sleeve 20, a steel wire mesh may be wrapped around the guide sleeve 20.
A graphite sealing ring 25 is arranged between the front cylinder seat 6 and the valve rod 3, and a pressing plate 26 for fixing the graphite sealing ring 25 is arranged on the front cylinder seat 6; preventing particles from blocking the movement of the valve stem 3.
The front cylinder seat 6 and the rear cylinder seat 7 are respectively provided with a gas passage 27 communicated with the interior of the piston cylinder 8; the outer wall of the valve body 1 is provided with a ventilation interface seat 28 communicated with the gas channel 27; the electromagnetic valve controls air flow into the piston cylinder 8, so that the piston piece 9 is controlled to drive the valve rod 3 to advance and retreat.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The skilled person will know: while the invention has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the invention, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.
Claims (9)
1. An axial-flow check valve, which comprises a valve cover, a valve body (1), a valve clack (2) and a valve rod (3), and is characterized in that: the valve gap includes preceding valve gap (4) and back valve gap (5), be equipped with sealing fit's piston assembly in valve body (1), piston assembly includes:
a front cylinder block (6) and a rear cylinder block (7), which are fixedly mounted in the valve body (1);
a piston cylinder (8) which is mounted in a sealing manner between the front cylinder block (6) and the rear cylinder block (7);
the piston piece (9) is fixedly sleeved on the valve rod (3) and is slidably arranged in the piston cylinder (8);
and a cooling flow passage for taking away heat of each sealing part is arranged in the piston cylinder (8).
2. The axial flow check valve of claim 1, wherein: the cooling flow passage includes:
a water inlet channel (10) arranged in the front cylinder block (6);
a first annular channel (11) arranged in the front cylinder block (6) and surrounding the valve stem (3);
the spiral ring groove (12) is positioned on the outer wall of the piston cylinder (8) and corresponds to the movement stroke of the piston member (9);
a second annular channel (13) arranged in the following cylinder block (7) and surrounding the valve stem (3);
a water outlet channel (14) arranged in the following cylinder block (7);
the water inlet channel (10), the first annular channel (11), the spiral ring groove (12), the second annular channel (13) and the water outlet channel (14) are sequentially communicated.
3. The axial flow check valve of claim 2, wherein: the valve body (1) is internally provided with a mounting seat (15) for mounting the piston assembly, the mounting seat (15) is hollow and cylindrical, a space for medium circulation is reserved between the outer wall of the mounting seat (15) and the inner wall of the valve body (1), and a plurality of connecting ribs (16) for connecting the mounting seat and the valve body are also arranged between the mounting seat and the inner wall of the valve body.
4. An axial flow check valve according to claim 3, wherein: the spiral ring groove (12) is formed by arranging a closely attached spring (17) between the inner wall of the mounting seat (15) and the outer wall of the piston cylinder (8).
5. An axial flow check valve according to claim 3, wherein: the front cylinder seat (6) and the rear cylinder seat (7) are fixedly arranged on the mounting seat (15), the shapes of the front cylinder seat (6) and the rear cylinder seat (7) are matched with the shape of the mounting seat (15), and the outer wall of the valve body (1) is provided with a water inlet interface seat (18) communicated with the water inlet channel (10) and the water outlet channel (14).
6. The axial flow check valve of claim 1, wherein: a buffer mechanism is arranged between the left valve cover and the valve clack (2), and the buffer mechanism comprises:
a guide rod (19) fixedly mounted on one end surface of the valve flap (2);
the guide sleeve (20) is fixedly arranged in the left valve cover and is in sliding fit with the guide rod (19);
the guide sleeve (20) is provided with a first through hole (21) positioned at the side wall and a second through hole (22) positioned at the end part, the second through hole (22) is provided with an adjusting screw (23) in threaded fit, and the side wall of the second through hole (22) is provided with a third through hole (24) communicated with the outside.
7. The axial flow check valve of claim 1, wherein: a graphite sealing ring (25) is arranged between the front cylinder seat (6) and the valve rod (3), and a pressing plate (26) for fixing the graphite sealing ring (25) is arranged on the front cylinder seat (6).
8. The axial flow check valve of claim 1, wherein: the front cylinder seat (6) and the rear cylinder seat (7) are respectively provided with a gas channel (27) communicated with the interior of the piston cylinder (8); the outer wall of the valve body (1) is provided with a ventilation interface seat (28) communicated with the gas channel (27).
9. The axial flow check valve of claim 2, wherein: the first annular channel (11) and the second annular channel (13) are internally provided with a partition plate (29), and two sides of the partition plate (29) are provided with a water inlet (30) and a water outlet (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310025118.9A CN116006736A (en) | 2023-01-09 | 2023-01-09 | Axial flow type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310025118.9A CN116006736A (en) | 2023-01-09 | 2023-01-09 | Axial flow type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116006736A true CN116006736A (en) | 2023-04-25 |
Family
ID=86022960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310025118.9A Pending CN116006736A (en) | 2023-01-09 | 2023-01-09 | Axial flow type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116006736A (en) |
-
2023
- 2023-01-09 CN CN202310025118.9A patent/CN116006736A/en active Pending
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