CN201517615U - Buffering type hydraulic mud valve - Google Patents
Buffering type hydraulic mud valve Download PDFInfo
- Publication number
- CN201517615U CN201517615U CN2009200610863U CN200920061086U CN201517615U CN 201517615 U CN201517615 U CN 201517615U CN 2009200610863 U CN2009200610863 U CN 2009200610863U CN 200920061086 U CN200920061086 U CN 200920061086U CN 201517615 U CN201517615 U CN 201517615U
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- Prior art keywords
- valve
- flap
- seal ring
- fixed
- gap
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- Expired - Fee Related
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Abstract
A buffering type hydraulic mud valve, comprises a valve body, a valve cover fixed on the valve body in the sealing way, a valve flap arranged in the valve body, a valve shaft fixed at the upper end of the valve flap, a cylinder of a hydraulic cylinder, a piston arranged in the hydraulic cylinder and a cylinder cap fixed on the cylinder in the sealing way, wherein the cylinder of the hydraulic cylinder is fixed on the valve cover in the sealing way, the valve shaft runs through the valve cover and extends into the hydraulic cylinder, the piston is fixed at the upper end of the valve shaft. The buffering type hydraulic mud valve is characterized in that a lower damping sleeve is fixed on the valve shaft and is arranged at the lower side of the piston, a first clearance concave hole matched with the damping sleeve is arranged at the upper end of the valve cover, the external diameter of the lower damping sleeve is smaller than the interior diameter of the first clearance concave hole. The utility model has the advantages of simple structure and good damping effect.
Description
Technical field
The utility model relates to a kind of buffering type soil discharging valve that surges, and particularly relates to the surge damping device of soil discharging valve of a kind of buffering type.
Background technique
Be 200420069012.1 in the patent No., name is called in the model utility of quick-opening mud valve, disclosed soil discharging valve comprises valve body, piston cylinder valve gap, dividing plate guide way, openings lead slip ring, valve core rod, taper valve, fluid pressure difference seal ring, return spring, solenoid valve, hand control valve etc., nesting type soft seal circle is arranged on the taper valve, make pass valve shock-absorbing capacity better.Though the nesting type soft seal circle in this patent has certain damping effect, only depends on the elastic shock attenuation of seal ring, damping effect is poor, and repeatedly behind the use bump, the damping effect of seal ring is variation progressively, and easily nesting type soft seal circle is damaged by pressure.
Summary of the invention:
The purpose of this utility model is to provide a kind of buffering type simple in structure, good damping effect soil discharging valve that surges.
Realize a kind of buffering type of the present utility model soil discharging valve that surges, comprise valve gap on valve body of valve body, sealing and fixing, place the flap in the valve body, the valve shaft that is fixed on the flap upper end, oil hydraulic cylinder cylinder body, place piston, the cylinder cap of sealing and fixing on cylinder body in the oil hydraulic cylinder; The cylinder body sealing and fixing of oil hydraulic cylinder is on valve gap; Valve shaft passes valve gap and extend in the oil hydraulic cylinder, and piston is fixed on the upper end of valve shaft, is fixed with down damping cover on valve shaft, following damping cover be positioned at piston below; Be provided with the first empty avoiding shrinkage pool that cooperates with the damping cover in the upper end portion of valve gap, the external diameter of following damping cover is less than the internal diameter of the first empty avoiding shrinkage pool.
Utilize the press water of tap water pipe network be connected to valve on, following water inlet, when valve closing, press water water inlet from the cylinder cap enters, piston drives valve rod, the damping cover, flap moves downward fast, when damping covers into empty avoiding shrinkage pool on the valve gap because the water in the first empty avoiding shrinkage pool can only be along the radial gap discharge of the damping cover and the first empty avoiding shrinkage pool, because the water exhaust port in the first empty avoiding shrinkage pool becomes very little suddenly, will produce the very big resistance that makes progress to the lower end surface of damping cover, piston drives valve rod, the damping cover, flap moves downward speed to be reduced greatly, make flap slowly contact valve body and make valve closing, because flap is slow the contact with valve body when closing, avoided the impact of flap to valve body, reduced wearing and tearing, good damping effect, and damping effect is not subjected to the influence of access times.
As improvement, also be fixed with the damping cover in valve shaft upper end, last damping cover be positioned at piston above; Be provided with the second empty avoiding shrinkage pool that cooperates with last damping block on the lower end surface of cylinder cap, the external diameter of last damping cover is less than the internal diameter of the second empty avoiding shrinkage pool.Utilize the press water of tap water pipe network to be connected to the upper and lower water inlet of valve, when valve open, press water enters from the following water inlet of valve gap, piston drive valve rod, damping block, flap move upward fast, the speed that moves upward when damping block enters on the cylinder cap damping hole is slack-off, reduces the impact to cylinder cap.Owing in the open and close process of valve resistance has been arranged, has avoided producing water hammer.
As further improvement, the gap of the external diameter of following damping cover and the internal diameter of the first empty avoiding shrinkage pool is 0.4-1.2mm; The gap of the external diameter of last damping cover and the internal diameter of the second empty avoiding shrinkage pool is 0.4-1.2mm.The resistance that excesssive gap produces is not enough to slow down and makes flap slowly contact valve body to make valve closing, and still with higher speed contact valve body, damping effect is bad for flap; The resistance that too small flap moves downward is too big, influences the motion of flap.
As further improving, the gap of the external diameter of following damping cover and the internal diameter of the first empty avoiding shrinkage pool is 0.65-0.9mm again; The gap of the external diameter of last damping cover and the internal diameter of the second empty avoiding shrinkage pool is 0.65-0.9mm.This gap makes flap decline reach optimum speed, and effectively damping does not cause flap decline resistance too big again.
Common improvement as such scheme also comprises first seal ring, press table; Be provided with first bulge loop concentric in the upper-end surface of first seal ring, be provided with second bulge loop concentric in the lower end surface of first seal ring with first seal ring with first seal ring; Be provided with three bulge loop concentric in the lower end of flap, be provided with first annular groove in the periphery of the 3rd bulge loop with flap; On the upper-end surface of press table, be provided with second annular groove concentric with press table; First seal ring be installed in flap below, press table is installed in the following of first seal ring and is fixed on the flap; Be provided with the recessed through hole of the taper that cooperates with first seal ring, press table in the bottom of valve body.
This flap structure, resistance is little when flap rising and descending motion; When the flap sealed valve body, be difficult for residual slip between flap and valve body, the good sealing effect of flap and valve body; This ring structure has radial and axial sealing effect, and sealability is better.
As improvement, on valve gap, be provided with guide sleeve, between guide sleeve and valve shaft, be provided with second seal ring, be provided with the 3rd seal ring at guide sleeve and valve cover chamber.The wearing and tearing of resistance when guide sleeve can reduce the valve shaft motion and minimizing valve shaft.
As another improvement, the flap central hollow, gravity alleviates, and can reduce the manufacture cost of flap and reduce the power that needs when flap moves up and down.
Improve as another, be provided with end difference in the lower end of valve shaft, gland is installed on end difference, gland is fixed on the flap, and valve shaft is fixed on the flap by gland; This means of fixation valve shaft is fixed on convenient, fixation on the flap.
The beneficial effects of the utility model are, by damping cover and this simple damping device of damping hole, reach good damping effect, and damping effect can be with the increase of access times variation.
Description of drawings
Fig. 1 is the cross-sectional schematic that the utility model dissects from the valve body central position.
Embodiment
As shown in Figure 1, a kind of buffering type soil discharging valve that surges, comprise valve body 8, by nut 23, bolt 24 be fixed on valve gap 28 on the valve body 8, place the flap 16 in the valve body 8, the valve shaft 12 that is fixed on flap 16 upper ends, oil hydraulic cylinder cylinder body 5, place piston 6 in the oil hydraulic cylinder, by hexagon nut 1 and the cylinder cap 3 of bolt 2 sealing and fixing on cylinder body 5; Cylinder body 5 sealing and fixing of oil hydraulic cylinder are on valve gap 28; Valve shaft 12 passes valve gap 28 and extend in the oil hydraulic cylinder, and piston 6 is fixed on the upper end of valve shaft 12.Be provided with seal ring 7 at valve body 8 and 28 of valve gaps, 3 are provided with seal ring 4. between cylinder body 5 and cylinder cap
Also be fixed with down damping cover 29 on valve shaft 12, following damping cover 29 is positioned at the below of piston 6, establishes with following damping at the shaft core position of the upper end portion of valve gap 28 and overlaps the 29 first empty avoiding shrinkage pools 20 that cooperate, and 29 the external diameter internal diameter less than the first empty avoiding shrinkage pool 20 is overlapped in following damping.Also be fixed with damping cover 31 in valve shaft 12 upper ends, last damping cover 31 is a nut, last damping overlap 31 be positioned at piston 6 above; On the lower end surface of cylinder cap 3, be provided with the second empty avoiding shrinkage pool 21 that cooperates with last damping block 31.The gap of the external diameter of following damping cover 31 and the internal diameter of the first empty avoiding shrinkage pool 20 is 0.5mm; The gap of the external diameter of last damping cover 31 and the internal diameter of the second empty avoiding shrinkage pool 21 is for being 0.5mm.
Be provided with guide sleeve 27 on valve gap 28, be provided with second seal ring 26, dust ring 11 at guide sleeve 27 and 12 of valve shafts, be provided with the 3rd seal ring 9 at guide sleeve 27 and 28 of valve gaps, guide sleeve 27 is fixed on the valve gap 28 by fluting awl end Cock screw 10.
Be provided with end difference 15 in the lower end of valve shaft 12, end difference 15 is equipped with gland 25 for splitting annulus on end difference 42, and gland 25 is fixed on the flap 16 by bolt 13, also is provided with spring washer 14 at bolt 13 and 25 on gland.
The buffering type soil discharging valve that surges also comprises and also comprises first seal ring 17, press table 19; Be provided with first bulge loop 22 concentric in the upper-end surface of first seal ring 17, be provided with second bulge loop 30 concentric in the lower end surface of first seal ring 17 with first seal ring 17 with first seal ring 17; Be provided with three bulge loop 32 concentric in the lower end of flap 16, be provided with first annular groove 33 in the periphery of the 3rd bulge loop 32 with flap 16; On the upper-end surface of press table 19, be provided with second annular groove 34 concentric with press table 19; First seal ring 17 be installed in flap 16 below, press table 19 is installed in the following of first seal ring 17 and is fixed on the flap 16 by screw 18; Be provided with the recessed through hole 35 of the taper that cooperates with first seal ring 17, press table 19 in the bottom of valve body.
Claims (8)
1. buffering type soil discharging valve that surges, comprise valve gap on valve body of valve body, sealing and fixing, place the flap in the valve body, the valve shaft that is fixed on the flap upper end, oil hydraulic cylinder cylinder body, place piston, the cylinder cap of sealing and fixing on cylinder body in the oil hydraulic cylinder; The cylinder body sealing and fixing of oil hydraulic cylinder is on valve gap; Valve shaft passes valve gap and extend in the oil hydraulic cylinder, and piston is fixed on the upper end of valve shaft, it is characterized in that: on valve shaft, be fixed with down damping cover, following damping cover be positioned at piston below; Be provided with the first empty avoiding shrinkage pool that cooperates with the damping cover in the upper end portion of valve gap, the external diameter of following damping cover is less than the internal diameter of the first empty avoiding shrinkage pool.
2. a kind of buffering type as claimed in claim 1 soil discharging valve that surges is characterized in that: also be fixed with the damping cover in the valve shaft upper end, last damping cover be positioned at piston above; Be provided with the second empty avoiding shrinkage pool that cooperates with last damping block on the lower end surface of cylinder cap, the external diameter of last damping cover is less than the internal diameter of the second empty avoiding shrinkage pool.
3. a kind of buffering type as claimed in claim 1 or 2 soil discharging valve that surges is characterized in that: the gap of the external diameter of following damping cover and the internal diameter of the first empty avoiding shrinkage pool is 0.4-1.2mm; The gap of the external diameter of last damping cover and the internal diameter of the second empty avoiding shrinkage pool is 0.4-1.2mm.
4. a kind of buffering type as claimed in claim 3 soil discharging valve that surges is characterized in that: the gap of the external diameter of following damping cover and the internal diameter of the first empty avoiding shrinkage pool is 0.65-0.9mm; The gap of the external diameter of last damping cover and the internal diameter of the second empty avoiding shrinkage pool is 0.65-0.9mm.
5. a kind of buffering type as claimed in claim 1 or 2 soil discharging valve that surges is characterized in that: also comprise first seal ring, press table; Be provided with first bulge loop concentric in the upper-end surface of first seal ring, be provided with second bulge loop concentric in the lower end surface of first seal ring with first seal ring with first seal ring; Be provided with three bulge loop concentric in the lower end of flap, be provided with first annular groove in the periphery of the 3rd bulge loop with flap; On the upper-end surface of press table, be provided with second annular groove concentric with press table; First seal ring be installed in flap below, press table is installed in the following of first seal ring and is fixed on the flap; Be provided with the recessed through hole of the taper that cooperates with first seal ring, press table in the bottom of valve body.
6. a kind of buffering type as claimed in claim 5 soil discharging valve that surges is characterized in that: be provided with guide sleeve on valve gap, be provided with second seal ring between guide sleeve and valve shaft, be provided with the 3rd seal ring at guide sleeve and valve cover chamber.
7. a kind of buffering type as claimed in claim 5 soil discharging valve that surges is characterized in that: the flap central hollow.
8. a kind of buffering type as claimed in claim 5 soil discharging valve that surges, it is characterized in that: the lower end at valve shaft is provided with end difference, and gland is installed on end difference, and gland is fixed on the flap, and valve shaft is fixed on the flap by gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200610863U CN201517615U (en) | 2009-07-23 | 2009-07-23 | Buffering type hydraulic mud valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200610863U CN201517615U (en) | 2009-07-23 | 2009-07-23 | Buffering type hydraulic mud valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201517615U true CN201517615U (en) | 2010-06-30 |
Family
ID=42498338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200610863U Expired - Fee Related CN201517615U (en) | 2009-07-23 | 2009-07-23 | Buffering type hydraulic mud valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201517615U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144967A (en) * | 2013-03-26 | 2013-06-12 | 无锡锡南铸造机械有限公司 | Dual-tank dense-phase pneumatic conveying device |
| CN105465449A (en) * | 2016-01-04 | 2016-04-06 | 淮北矿业股份有限公司 | Time-controlled electric mud draining valve |
| CN112344028A (en) * | 2020-11-05 | 2021-02-09 | 深能合和电力（河源）有限公司 | Mud valve |
-
2009
- 2009-07-23 CN CN2009200610863U patent/CN201517615U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144967A (en) * | 2013-03-26 | 2013-06-12 | 无锡锡南铸造机械有限公司 | Dual-tank dense-phase pneumatic conveying device |
| CN103144967B (en) * | 2013-03-26 | 2015-08-19 | 无锡锡南铸造机械股份有限公司 | Two tank dense-phase pneumatic conveying device |
| CN105465449A (en) * | 2016-01-04 | 2016-04-06 | 淮北矿业股份有限公司 | Time-controlled electric mud draining valve |
| CN112344028A (en) * | 2020-11-05 | 2021-02-09 | 深能合和电力（河源）有限公司 | Mud valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20130723 |