CN2527803Y - Pneumatic flat-plate gate valve - Google Patents
Pneumatic flat-plate gate valve Download PDFInfo
- Publication number
- CN2527803Y CN2527803Y CN 02219025 CN02219025U CN2527803Y CN 2527803 Y CN2527803 Y CN 2527803Y CN 02219025 CN02219025 CN 02219025 CN 02219025 U CN02219025 U CN 02219025U CN 2527803 Y CN2527803 Y CN 2527803Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- flashboard
- valve
- gate valve
- clamped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a low pressure, small nominal diameter air-powered flat gate valve. The flat gate valve is characterized in that a lip-shaped obturating ring is arranged on an upper valve body opposite to a restrictor; a valve rod at the rear part of the restrictor is a cylinder piston rod which is connected with a piston, the sealing effect is enhanced by adoption of the lip-shaped obturating ring and full utilization of pipeline pressure acted on the inner surface of the lip-shaped obturating ring. The gate valve rod is integrated with the cylinder elements, thereby the proper alignment of the axes of the cylinder and the restrictor are ensured, adapter parts are reduced and the production cost is lowered.
Description
Technical field
The utility model relates to a kind of gate valve, exactly is low pipeline pressure, the draining of little latus rectum size, blowdown pneumatic flat plate gate valve.
Background technique
Tube orientation draining, drainage adopt plate valve more, and the problem that existing plate valve exists is, and one, because what adopt is common seal washer, its sealing effect is relatively poor; Two, being connected of gate valve and cylinder, adopt the transition of various retaining member mode usually, the coaxality of cylinder shaft axis and flashboard shaft axis be cannot say for sure card.Three, existing plate valve all is a steel, for there being the corrosion protection anti-corrosive properties to require, adopt alloy materials more or spray the specific alloy material on vitals such as valve seat, flashboard surface, the plate valve that also has direct employing stainless steel material to make, for low-pressure, service condition that latus rectum is little, the manufacture cost height of above-mentioned these gate valves, that w/v is big, material resources takies many shortcoming is more apparent outstanding.
Summary of the invention
The utility model is at the deficiency that prior art exists, and provides a kind of better tightness, manufacture cost is lower, functional reliability is high, can satisfy the pneumatic flat plate gate valve that the corrosion protection anti-corrosive properties require.
Its concrete technological scheme is as follows:
The pneumatic flat plate gate valve comprises upper valve body, following valve body, flashboard and cylinder-piston assembly, it is characterized in that:
The upper valve body of A, a relative side with the flashboard plane axially is provided with a closure gasket groove, is provided with lip-type packing in the annular groove, and the sealing applying face width of lip-type packing contacts with presenting active line between the flashboard, makes sealing effect better;
B, be provided with more than one boss, to strengthen support to the flashboard top with the following body wall of the radially relative side of flashboard;
C, be provided with the body that is clamped and connected between cylinder barrel and upper and lower valve body, the body that is clamped and connected is provided with and valve rod hole, the coaxial axis hole of cylinder shaft axis, is provided with a suction port on cylinder one side, the body that is clamped and connected perpendicular to axis hole; The valve rod at flashboard rear portion is cylinder piston rod, and valve rod passes its other end of body that is clamped and connected and connecting the piston that is positioned at cylinder.The coaxality of cylinder shaft axis and flashboard shaft axis is guaranteed.
The material of described lip-type packing is a nitrile butadiene rubber, and its working surface is the fluorine material layer; Or fluorine rubber material.Upper and lower valve body, flashboard all can adopt the engineering plastics injection molding process, and once-through makes low-pressure, little latus rectum plate valve realize full engineering plastics making.
One end of the described body that is clamped and connected is set in the upper and lower valve end of valve rod one side, and the end face seal of the other end and cylinder barrel is fitted.This structure decrease the quantity of clamping transition piece.
The surperficial upper edge valve rod direction of following valve body one side of described flashboard is provided with the boss stripe of one or more.To reduce the frictional resistance of flashboard in movement process.
The utility model makes it to produce the advantage of several respects by the improvement to existing plate valve structure:
One, adopt lip-type packing on upper valve body, make sealing applying face width, it presents active line with flashboard and contacts, and makes full use of pipeline pressure and acts on the lip-type packing internal surface, the enhanced leaktightness effect.
Two, owing to down be provided with projection on the body wall, flashboard is lifted on running to behind the top, improve sealing effect, strengthened support to the gate valve top, improve the flashboard bearing capacity.
Three, gate valve bar and cylinder component are manufactured one, guaranteed the coaxality of cylinder shaft axis and flashboard shaft axis, reduced transition member, reduced manufacture cost.
Four, this structure plate valve, the draining, the blowdown that are suitable for low-pressure, little latus rectum pipeline are used, and can adopt full engineering plastic materials manufacturing.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is Figure 1A-A cutaway view Amplified image,
Fig. 3 is Figure 1B-B cutaway view Amplified image.
Embodiment
As seen from Figure 1, the pneumatic flat plate gate valve comprises upper valve body 4, following valve body 1, flashboard 2, planar sealing pad 3 and cylinder-piston assembly.
Have a closure gasket groove with the upper valve body 4 of the relative side in flashboard 2 planes on axially, a lip-type packing 5 is housed in the annular groove.The material of this lip-type packing 5 is a nitrile butadiene rubber, has sealing applying face width, and it presents active line with flashboard and contacts, and sees Fig. 2.
Be provided with two boss, 10, two boss tops with following valve body 4 sidewalls of the radially relative side of flashboard 2 and protrude from flashboard 2 operation planes slightly, appear on the stage after making flashboard run to the top, improve sealing effect; The support to flashboard 2 tops has been strengthened in the design of this two boss simultaneously, has improved the bearing capacity of flashboard 2, sees Fig. 3.
The surperficial upper edge valve rod direction of following valve body 1 one sides of flashboard 2 is provided with six boss stripes 12, thereby has reduced flashboard 2 at the frictional resistance of opening or closing in the closed procedure, sees Fig. 2.
One body 6 that is clamped and connected is housed between cylinder barrel 7 and upper and lower valve body, has on the body 6 that is clamped and connected and valve rod shaft axis, the coaxial axis hole of cylinder shaft axis, on cylinder barrel 7 one sides, the body 6 that is clamped and connected, have a suction port 11 perpendicular to axis hole; The valve rod at flashboard 2 rear portions is cylinder piston rod 9, and valve rod passes body 6 its other ends that are clamped and connected and is connected with the piston 8 that is positioned at cylinder barrel 7.
Figure 1 shows that gate valve is in closed state, when gate valve need be opened, anhydrous cleaning compressed air entered from cylinder front end suction port 11, promoted cylinder piston 8 and moved right; Cylinder piston 8 drives flashboard 2 by piston rod 9 and moves right together, till cylinder piston 8 moves to the tail cylinder cushion pad, and flashboard 2 complete opening conduits mouths.
When gate valve needed closure, anhydrous cleaning compressed air entered from the tail cylinder suction port, promoted cylinder piston 8 to left movement; Cylinder piston 8 drives flashboard 2 together to left movement by piston rod 9.Because the boss in valve body 1 passage leading edge design down exceeds flashboard 2 moving platforms, flashboard 2 is subjected to the thrust of piston 8, piston rod and pushes to plane on the boss, till piston 8 moves to the cylinder head cushion pad.Flashboard 2 is pushed to boss, has strengthened the decrement between lip-type packing 5 and the flashboard 2, helps increasing sealing effect, simultaneously for flashboard 2 provides front fulcrum, has improved the bearing capacity of flashboard 2.
Claims (4)
1, pneumatic flat plate gate valve comprises upper valve body, following valve body, flashboard and cylinder-piston assembly, it is characterized in that:
The upper valve body of A, a relative side with the flashboard plane axially is provided with a closure gasket groove, is provided with lip-type packing in the annular groove;
B, be provided with more than one boss with the following body wall of the radially relative side of flashboard;
C, be provided with the body that is clamped and connected between cylinder barrel and upper and lower valve body, the body that is clamped and connected is provided with and valve rod hole, the coaxial axis hole of cylinder-bore, is provided with a suction port on cylinder one side, the body that is clamped and connected perpendicular to axis hole; The valve rod at flashboard rear portion is cylinder piston rod, and valve rod passes its other end of body that is clamped and connected and connecting the piston that is positioned at cylinder.
2, pneumatic flat plate gate valve according to claim 1 is characterized in that: the material of described lip-type packing is a nitrile butadiene rubber, and its working surface is the fluorine material layer; Or fluorine rubber material.
3, pneumatic flat plate gate valve according to claim 1 is characterized in that: an end of the body that is clamped and connected is set in the upper and lower valve end of valve rod one side, and the end face seal of the other end and cylinder barrel is fitted.
4, pneumatic flat plate gate valve according to claim 1 is characterized in that: the surperficial upper edge valve rod direction of following valve body one side of described flashboard is provided with the boss stripe of one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02219025 CN2527803Y (en) | 2002-02-20 | 2002-02-20 | Pneumatic flat-plate gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02219025 CN2527803Y (en) | 2002-02-20 | 2002-02-20 | Pneumatic flat-plate gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2527803Y true CN2527803Y (en) | 2002-12-25 |
Family
ID=33697581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02219025 Expired - Lifetime CN2527803Y (en) | 2002-02-20 | 2002-02-20 | Pneumatic flat-plate gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2527803Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101379328B (en) * | 2006-02-09 | 2013-05-08 | 萨莱纳涡流公司 | Orifice valve for bulk solids |
-
2002
- 2002-02-20 CN CN 02219025 patent/CN2527803Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101379328B (en) * | 2006-02-09 | 2013-05-08 | 萨莱纳涡流公司 | Orifice valve for bulk solids |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120220 Granted publication date: 20021225 |