CN102606470A - Linear sliding-vane type check valve and slurry pump - Google Patents

Linear sliding-vane type check valve and slurry pump Download PDF

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Publication number
CN102606470A
CN102606470A CN2012100566551A CN201210056655A CN102606470A CN 102606470 A CN102606470 A CN 102606470A CN 2012100566551 A CN2012100566551 A CN 2012100566551A CN 201210056655 A CN201210056655 A CN 201210056655A CN 102606470 A CN102606470 A CN 102606470A
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China
Prior art keywords
valve
sealing
slide plate
block seat
rod
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CN2012100566551A
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CN102606470B (en
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陈益人
袁发菊
黎泽洲
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Three river moral young worker journey Machinery Co., Ltd.s
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Black whirlwind engineering machinery Development Co Ltd
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Abstract

The invention discloses a linear sliding-vane type check valve, comprising a valve chamber, wherein a sliding vane in the valve chamber forms a slidable sealing fit with a valve seat; the sealing surface of the sliding vane is connected to a connection rod; and the connection rod is connected to a driving device which is used for driving the sliding vane to slide along a plane vertical to the axis of a sliding valve seat. The linear sliding-vane type check valve and the slurry pump disclosed by the invention use a radially moving valve core to realize the direct communication of the check valve of the slurry pump; the flowing resistance of the concentrated concrete slurry is effectively reduced; and the phenomenon that the slurry is easy to block the valve in a transportation process can be avoided. As the connection rod used for driving the sliding vane which serves as the valve core to move is connected to a sealing surface of the sliding vane, the pressure in the valve chamber strengthens the sealing effect; and the structure can self-compensate error caused by abrasion of the sliding vane or a sealing sliding rail to a certain extent, so that the valve body can be operated reliably and is suitable for a bad working environment for a long period of time without any trouble; and the volumetric efficiency of the slurry pump is effectively increased.

Description

Straight line sliding vane one-way valve and slurry pump
Technical field
The present invention relates to a kind of one-way valve and adopt the slurry pump of this one-way valve, especially a kind ofly be used for straight line sliding vane one-way valve and the slurry pump that thick slurry is carried.
Background technique
One-way valve commonly used in the state of the art has non-return valve and one way poppet valve.Its characteristics are following:
(1) non-return valve.
One-way valve is to be used to make medium only to flow along suction port; And the valve that the medium of exhaust port can't reflux; The spool that adopts in the non-return valve is generally steel ball, and non-return valve sealing pair (being sealing surface of seat and ball seal face) is through the motion formation opening and closing of steel ball; In dense thick concrete slurry, adopt non-return valve, the problem that exists in the use is:
1, the steel ball as spool can only move in a limited space, and when non-return valve was opened, dense thick concrete slurry need repeatedly change shape, because the viscosity of fluid, a large amount of kinetic energy are lost.
Frictional force formula according to the working fluid interlayer:
F f=Aμdu/dy
Wherein μ is a viscosity coefficient, and A is the area of contact of liquid layer, the velocity gradient between the du/dy liquid layer.
Concrete coefficient commonly used is 1.3, because the existence of steel ball, dense thick concrete slurry is by layering, and then A increases, and because the existence of viscosity, the velocity gradient between the du/dy liquid layer also increases, and promptly the liquid level skin sharply descends compared to the speed of liquid level internal layer.
Can find out that above formula in the runner of dense thick concrete slurry, baffle being set is that spool can consume a large amount of kinetic energy.
2, for to guarantee that non-return valve has enough apertures; It is the size that its aperture is not less than the valve seat opening; So that non-return valve does not become the bottleneck in the runner; Then the steel ball spool need move enough distances, and the steel ball spool operation be to promote by dense thick concrete slurry, then promote that the steel ball spool opens or close apart from T in the kinetic energy that produces of the range ability of piston cylinder lost.Specifically as shown in Figure 9.As can be seen from the figure; Dense thick concrete slurry is forced the change shape, flow through around the spool, the spool opening and closing apart from T; When the distance of T be provided with too small; Can the dense thick concrete slurry of influence flow, and be provided with excessively when the distance of T, lost for the energy in the running of T in distance.
3, dense thick concrete slurry can't keep its flowability always, and dense over time thick concrete slurry can solidify, thereby stops up non-return valve, makes them can't opening and closing, and whole slurry pump can't be moved.
(2) one way poppet valve.
1, existing one way poppet valve, spool is connected with driving element, and the working surface of spool is generally conical surface, and conical surface cooperates with valve seat, and described driving element is generally oil hydraulic cylinder or pneumatic linear actuator.One way poppet valve exists the kinetic energy rejection identical with non-return valve to reach the problem of easy blocking greatly.
Specifically as shown in Figure 10, the distance of spool opening and closing is T, and the distance of T is provided with too small then dense thick concrete slurry constricted flow, and is excessive then in control system, needs the stand-by period elongated.
2, because need to give the independent outfit driving element of spool; And the piston rod of spool and driving element also moves in dense thick concrete slurry; Then the sealing of driving element also is a problem; The sealing part that is piston rod has increased new source of leaks, and on a slurry pump, has two one way poppet valve at least, and this structure has also limited the lifting of one way poppet valve valve pocket internal pressure.Therefore need the occasion of high-pressure delivery, still adopting non-return valve in the existing technology usually.
(3)Multidigit dual face seals valve
Germany Schwing GmbH F. is respectively " 200580012885.6 " a kind of thick matter piston pump and " 200580012886.0 " a kind of thick matter piston pump in two related patent U.S. Patent No. of China's application.
Its core is to connect double piston cylinder and Y type exhaust port with a valve body; On its valve body, can realize the function of feeding, sealing and discharging, both its spool had three kinds of states---and feeding, sealing and straight-through, feeding are that cylinder body and feed bin are communicated with; Sealing is to seal between cylinder body and the exhaust port; Straight-through is straight-through between cylinder body and the exhaust port, just can realize designing the process of the feeding to twin-tub, precompressed sealing and discharge very ingenious through a valve.
But the valve body shape and structure of being mentioned in the above-mentioned patent is all comparatively complicated; Because there be the position of a Vertical direction to the substantially horizontal conversion in the inlet on top; Therefore thickness can't reduce, and spool and valve body exist difficulty of processing height, technological requirement complicated, the low problem of bringing owing to dual face seals of sealing serviceability; And, also can't reduce cost through large batch of production as this fractional yield less equipment of slurry pump; Two kinds of valve bodies mentioning hereof all are to be in dual face seals at connection part; Be that its spool needs the two sides all to seal, and in sealing, the slip that spool also need not stop; This also is the difficulty place of processing technology; Spool can produce wearing and tearing in the slip, thereby produces bigger gap, in the 15th page the 4th section of " 200580012886.0 " a kind of thick matter piston pump file, also mentions; " it is useful perhaps being set to thin slice with the mode of boring a hole, thereby discharges the water that infiltrates between control slide plate and the guide structure ".Along with the aggravation of wearing and tearing can predict seepage can be increasing; Thereby must change spare part ability proper functioning; With this type of non-return valve and poppet valve can self compensation the valve of (promptly within the specific limits wearing and tearing can not influence use) compare, this has increased production cost.
Summary of the invention
Technical problem to be solved by this invention provides a kind of straight line sliding vane one-way valve and slurry pump, can realize dense thick slurries direct expedite passing through in valve body, and can realize the sealing of self compensation mode, and can be used under high-lift, the high interior operating mode of pressing.
For solving the problems of the technologies described above; The technological scheme that the present invention adopted is: a kind of straight line sliding vane one-way valve; Comprise valve pocket; Slide plate in the valve pocket and valve block seat form and slidably are sealed and matched, and the sealing surface of slide plate is connected with connecting rod, and connecting rod is connected with the drive unit of the planar slide of the axis normal of valve block seat with driving slide plate edge.
Be provided with the sealing slide rail between described slide plate and the valve block seat.
Opposing side one side of the sealing surface of the inherent slide plate of described valve pocket is provided with anti-recoil guide rail.
The edge of described slide plate is provided with chamfering.
Described valve block seat one side is provided with and is used for the chute that connecting rod slides, and the periphery of chute is provided with Sealing, and when opening of valves or sealing, slide plate all forms with Sealing and is sealed and matched.
Be respectively equipped with the accommodating groove that is used to hold connecting rod on the sidewall of the sidewall of the through hole of described valve block seat and relative opposite side.
A kind of slurry pump; Comprise clutch release slave cylinder; Clutch release slave cylinder is communicated with discharge one-way valve and suction one-way valve respectively, and in the described suction one-way valve, slide plate in the valve pocket and valve block seat form and slidably be sealed and matched; The sealing surface of slide plate is connected with connecting rod, and connecting rod is connected with the drive unit of the planar slide of the axis normal of valve block seat with driving slide plate edge.
Be respectively equipped with the accommodating groove that is used to hold connecting rod on the sidewall of the sidewall of described valve block seat and relative opposite side.
Be provided with the sealing slide rail between described slide plate and the valve block seat, the sealing slide rail is provided with the accommodating groove that is used to hold connecting rod;
Opposing side one side of the sealing surface of the inherent slide plate of described valve pocket is provided with anti-recoil guide rail.
In the described discharge one-way valve, slide plate in the valve pocket and valve block seat form and slidably are sealed and matched, and the sealing surface of slide plate is connected with connecting rod, and connecting rod is connected with the drive unit of the planar slide of the axis normal of valve block seat with driving slide plate edge;
Be provided with the sealing slide rail between described slide plate and the valve block seat;
Opposing side one side of the sealing surface of the inherent slide plate of described valve pocket is provided with anti-recoil guide rail;
Described valve block seat one side is provided with and is used for the chute that connecting rod slides, and the periphery of chute is provided with Sealing, and when opening of valves or sealing, slide plate all forms with Sealing and is sealed and matched.
With the spool of non-return valve and one way poppet valve be move vertically different; Can hinder concrete flowing at axial spool; And the structure of one-way valve of the present invention is moving radially along pipeline; Concrete slurry is formed shearing force, and the resistance in concrete slurry will be significantly smaller than the spool of non-return valve and one way poppet valve.This structure is highly suitable for the slurries of concrete slurry and various thickness.
A kind of straight line sliding vane one-way valve provided by the invention and slurry pump through adopting the spool of radial motion, have been realized the straight-through of slurry pump one-way valve, promptly dense thick concrete slurry, direct expedite passing through in valve body.Effectively reduce the flow resistance of the concrete slurry of thickness, avoided the easy blocking phenomenon that in slurries are carried, occurs; Because driving is connected with the sealing surface of slide plate as the connecting rod of the vane motion of spool; Pressure in the valve pocket has been strengthened the effect of sealing; And this structure can compensate slide plate or the error that causes because of wearing and tearing of sealing slide rail to a certain extent voluntarily, so valve body can move reliably, is suitable for competent bad working environment; Accident-free duration is long, and has increased the volumetric efficiency of slurry pump effectively.Because under high-lift, the high interior operating mode of pressing that valve body and spool in elevated pressures lower seal better effects if, are specially adapted to.Because the list of slurry pump is criticized manufacture usually can be not too many, be worthless so adopt processing technology, because this processing technology can increase into the cost of product greatly as precision die casting, powder casting and so on.Valve body among the present invention and spool are less demanding for precision, are convenient to make, and shape processing technology difficulty is little, and is also not harsh to the requirement of material, thereby helps reducing production costs.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 looks schematic representation for the overall structure master of the embodiment of the invention 1, the structure when wherein the top is open position, the structure the when below is the sealing position.
Fig. 2 is the overall structure schematic top plan view of the embodiment of the invention 1, the structure when wherein the top is open position, the structure the when below is the sealing position.
Fig. 3 is the structural representation of sealing slide rail and Sealing on embodiment's 1 valve block seat among the present invention.
Fig. 4 is the partial enlarged drawing at A place among Fig. 1.
Fig. 5 is the partial enlarged drawing at B place among Fig. 1.
Fig. 6 looks schematic representation for embodiment's 2 among the present invention master, the structure when wherein the top is for the sealing position, the structure the when below is open position.
Fig. 7 is embodiment's 2 among the present invention schematic top plan view, has mainly shown the structure of sealing slide rail on the valve block seat.
Fig. 8 is the overall structure schematic representation of slurry pump among the present invention.
Fig. 9 is the structural representation of non-return valve in the existing technology.
Figure 10 is the structural representation of one way poppet valve in the existing technology.
Among the figure: drive unit 1, valve pocket 2, slide plate 3, valve block seat 4, anti-recoil guide rail 5, Sealing 6, sealing slide rail 7, accommodating groove 8, connecting rod 9 is discharged one-way valve 10, sucks one-way valve 11, clutch release slave cylinder 12, chute 13.
Embodiment
Embodiment 1:
In Fig. 1,2; A kind of straight line sliding vane one-way valve comprises valve pocket 2, and the slide plate 3 in the valve pocket 2 forms with valve block seat 4 and slidably is sealed and matched; The sealing surface of slide plate 3 is connected with connecting rod 9, and connecting rod 9 is connected with the drive unit 1 of the planar slide of the axis normal of valve block seat 4 with driving slide plate 3 edges.Drive unit 1 adopts oil hydraulic cylinder usually, adopts other driving mode, and for example air cylinder driven, slidercrank mechanism drive and the gear rack driving also is feasible.
Be provided with sealing slide rail 7 between described slide plate 3 and the valve block seat 4.In Fig. 3,4 and 5, sealing slide rail 7 is arranged on the sliding trace of periphery and slide plate 3 in valve block seat 4 holes.
Described valve block seat 4 one sides are provided with and are used for the chute 13 that connecting rod 9 slides, and the periphery of chute 13 is provided with Sealing 6, and when opening of valves or sealing, slide plate 3 all forms with Sealing 6 and is sealed and matched.In use, connecting rod 9 slides in chute 13, receives the pressure in the valve pocket 2, and slide plate 3 forms sealing with chute 13 simultaneously, and structure has thus been guaranteed the reliable sealing of slide plate 3 driving mechanisms.
During use; (this pressure is provided by clutch release slave cylinder 12 pressure in slide plate 3 receives valve pocket 2 usually; And in the discharge side of discharging one-way valve 10, then produce by the dense thick slurries of carrying) big more, high pressure makes slide plate 3 press to the Sealing 6 of sealing slide rail 7 and chute 13 peripheries; Thereby realization selfsealings, pressure high sealing effect more are good more.Sealing slide rail 7 adopts teflon, pottery or their composite usually, to realize low-frictional force, wear-resisting and corrosion resistant effect.
Opposing side one side of the sealing surface of described valve pocket 2 inherent slide plates 3 is provided with anti-recoil guide rail 5.Be used to prevent the improper recoil that causes is set because of automatic Control Parameter.Because anti-recoil guide rail 5 is merely the effect of protection, therefore very not high for the requirement of precision, be beneficial to make.
The edge of described slide plate 3 is provided with chamfering.The chamfering effect is that one is to reduce the frictional force of slide plate 3 in the concrete slurry of thickness, because the existence of chamfering, and 3 its cross-section areas of the slide plate in the slip sheet mechanism are less, are merely 1/4-1/6 of one way poppet valve, so the resistance in the motion is very little.
The 2nd, the chamfering of slide plate 3 can produce a downward component in movement process, makes slide plate 3 better compress sealing slide rail 7, thereby realizes sealing reliably.
Embodiment 2:
In the scheme of optimizing; In Fig. 6; A kind of straight line sliding vane one-way valve comprises valve pocket 2, and the slide plate 3 in the valve pocket 2 forms with valve block seat 4 and slidably is sealed and matched; The sealing surface of slide plate 3 is connected with connecting rod 9, and connecting rod 9 is connected with the drive unit 1 of the planar slide of the axis normal of valve block seat 4 with driving slide plate 3 edges.Drive unit 1 adopts oil hydraulic cylinder usually, and it also is feasible adopting other driving mode, and for example air cylinder driven, slidercrank mechanism drive and the gear rack driving also is feasible.
Be provided with sealing slide rail 7 between described slide plate 3 and the valve block seat 4.In Fig. 7, sealing slide rail 7 is arranged on the sliding trace of periphery and slide plate 3 in valve block seat 4 holes.
In Fig. 6,7, be respectively equipped with the accommodating groove 8 that is used to hold connecting rod 9 on the sidewall of the sidewall of the through hole of described valve block seat 4 and relative opposite side, the drive unit 1 for example piston rod of the oil hydraulic cylinder sidewall that passes the through hole of valve block seat 4 is connected with connecting rod 9.Because this moment, piston rod was to be positioned at the suction side, when being used to suck one-way valve 11, because working pressure is little, the seal request of piston rod is not high.
When slide plate 3 is positioned at the opening and closing of fault state; Connecting rod 9 is in the accommodating groove 8, thereby slide plate 3 can not interfered flowing of dense thick slurries when opening, and guarantees that sealing is reliable during sealing; Compare with embodiment 1 structure; Drive unit 1 piston rod of oil hydraulic cylinder for example in this example, the sidewall of the through hole through valve block seat 4 is connected with connecting rod 9, thereby has reduced whole volume.Be highly suitable for to bear the suction one-way valve 11 of pressure.
Embodiment 3:
In Fig. 8; A kind of slurry pump comprises clutch release slave cylinder 12, and clutch release slave cylinder is communicated with discharge one-way valve 10 and suction one-way valve 11 respectively; In the described suction one-way valve 11; Slide plate 3 in the valve pocket 2 forms with valve block seat 4 and slidably is sealed and matched, and the sealing surface of slide plate 3 is connected with connecting rod 9, and connecting rod 9 is connected with the drive unit 1 of the planar slide of the axis normal of valve block seat 4 with driving slide plate 3 edges.
Be respectively equipped with the accommodating groove 8 that is used to hold connecting rod on the sidewall of the sidewall of described valve block seat 4 and relative opposite side.
Be provided with sealing slide rail 7 between described slide plate 3 and the valve block seat 4, sealing slide rail 7 is provided with the accommodating groove 8 that is used to hold connecting rod;
Opposing side one side of the sealing surface of described valve pocket 2 inherent slide plates 3 is provided with anti-recoil guide rail 5.
Because connecting rod 9 is positioned at the suction end that sucks one-way valve 11, does not bear pressure here, little for the sealing influence of driving mechanism, therefore adopt embodiment 2 structure can reduce the volume of equipment effectively.And slide plate 3 is pressed in sealing slide rail 7 behind valve pocket 2 pressurizeds, and the sealing effect during work is identical with embodiment 1 effect.
Promptly sucking one-way valve 11 adopts like embodiment's 2 described one-way valves.
In the described discharge one-way valve 10, the slide plate 3 in the valve pocket 2 forms with valve block seat 4 and slidably is sealed and matched, and the sealing surface of slide plate 3 is connected with connecting rod 9, and connecting rod 9 is connected with the drive unit 1 of the planar slide of the axis normal of valve block seat 4 with driving slide plate 3 edges; Be provided with sealing slide rail 7 between described slide plate 3 and the valve block seat 4;
Opposing side one side of the sealing surface of described valve pocket 2 inherent slide plates 3 is provided with anti-recoil guide rail 5;
Described valve block seat 4 one sides are provided with and are used for the chute 13 that connecting rod 9 slides, and the periphery of chute 13 is provided with Sealing 6, and when opening of valves or sealing, slide plate 3 all forms with Sealing 6 and is sealed and matched.All can bear pressure owing to discharge the both sides of one-way valve 10, it is useful therefore adopting embodiment 1 structure, and driving mechanism also is positioned at the sealing surface of slide plate 3, has improved the reliability of valve.
In the induction stroke and discharge stroke of clutch release slave cylinder 12; Particularly, a precompression program is arranged, promptly discharge one-way valve 10 at this moment and seal with suction one-way valve 11 in the stage that discharge stroke begins; The pressure state of this moment does; The suction end pressure that sucks one-way valve 11 is lower than the pressure of exhaust end, and the suction end pressure of discharge one-way valve 10 also is lower than the pressure of exhaust end, discharges one-way valve 10 if open this moment; The material of then discharging the exhaust end of one-way valve 10 can recoil and enter in the clutch release slave cylinder 12; Influencing the smooth running of equipment integral, therefore make the pressure of the concrete slurry in clutch release slave cylinder 12 cylinder bodies consistent with the pressure that is positioned at the high pressure pipe line of discharging one-way valve 10 exhaust ends, is useful in case the pressure of high pressure pipe line forms recoil to the one-way valve that sucks.Avoid recoiling for the having relatively high expectations of automatic control, need in high pressure pipe line and clutch release slave cylinder 12 cylinder bodies, pressure transducer be set so that the pressure between the two is as much as possible little.
Concrete suction control flow is: in Fig. 8, suck one-way valve 11 and open, discharge one-way valve 10 and close; The piston right lateral of clutch release slave cylinder 12 begins to suck concrete slurry, and when being sucked near the top, selector valve switches; Clutch release slave cylinder 12 left lateral get into the precompression operation, and the pressure transducer in high pressure pipe line and clutch release slave cylinder 12 cylinder bodies measures pressure difference between the two less than the value of setting, and then control is discharged one-way valve 10 and opened; Concrete slurry in the clutch release slave cylinder 12 is discharged from this moment; Discharge one-way valve 10 and close this moment, sucks one-way valve 11 and open, and carries out next stroke.
Slurry pump in this example is owing to adopted the one-way valve among embodiment 1 and the embodiment 2; The working life and the reliability of easily damaged parts one-way valve have been prolonged effectively; And, also increased the volumetric efficiency of slurry pump effectively because the one-way valve among embodiment 1 and the embodiment 2 has straight-through and sealability is outstanding.

Claims (10)

1. straight line sliding vane one-way valve; Comprise valve pocket (2); It is characterized in that: the slide plate (3) in the valve pocket (2) forms with valve block seat (4) and slidably is sealed and matched; The sealing surface of slide plate (3) is connected with connecting rod (9), and connecting rod (9) is connected with the drive unit (1) of the planar slide of the axis normal of valve block seat (4) with driving slide plate (3) edge.
2. a kind of straight line sliding vane one-way valve according to claim 1 is characterized in that: be provided with sealing slide rail (7) between described slide plate (3) and the valve block seat (4).
3. a kind of straight line sliding vane one-way valve according to claim 2 is characterized in that: opposing side one side of the sealing surface of the inherent slide plate of described valve pocket (2) (3) is provided with anti-recoil guide rail (5).
4. a kind of straight line sliding vane one-way valve according to claim 1, it is characterized in that: the edge of described slide plate (3) is provided with chamfering.
5. according to claim 1,2,3 or 4 described a kind of straight line sliding vane one-way valves; It is characterized in that: described valve block seat (4) one sides are provided with and are used for the chute (13) that connecting rod (9) slides; The periphery of chute (13) is provided with Sealing (6); When opening of valves or sealing, slide plate (3) all forms with Sealing (6) and is sealed and matched.
6. according to claim 1,2,3 or 4 described a kind of straight line sliding vane one-way valves, it is characterized in that: be respectively equipped with the accommodating groove (8) that is used to hold connecting rod on the sidewall of the sidewall of described valve block seat (4) and relative opposite side.
7. slurry pump; Comprise clutch release slave cylinder (12); Clutch release slave cylinder is communicated with discharge one-way valve (10) and suction one-way valve (11) respectively, it is characterized in that: in the described suction one-way valve (11), the slide plate (3) in the valve pocket (2) forms with valve block seat (4) and slidably is sealed and matched; The sealing surface of slide plate (3) is connected with connecting rod (9), and connecting rod (9) is connected with the drive unit (1) of the planar slide of the axis normal of valve block seat (4) with driving slide plate (3) edge.
8. a kind of straight line sliding vane one-way valve according to claim 7 is characterized in that: be respectively equipped with the accommodating groove (8) that is used to hold connecting rod on the sidewall of the sidewall of the through hole of described valve block seat (4) and relative opposite side.
9. a kind of straight line sliding vane one-way valve according to claim 8 is characterized in that: be provided with sealing slide rail (7) between described slide plate (3) and the valve block seat (4), sealing slide rail (7) is provided with the accommodating groove (8) that is used to hold connecting rod;
Opposing side one side of the sealing surface of the inherent slide plate of described valve pocket (2) (3) is provided with anti-recoil guide rail (5).
10. a kind of straight line sliding vane one-way valve according to claim 7; It is characterized in that: in the described discharge one-way valve (10); Slide plate (3) in the valve pocket (2) forms with valve block seat (4) and slidably is sealed and matched; The sealing surface of slide plate (3) is connected with connecting rod (9), and connecting rod (9) is connected with the drive unit (1) of the planar slide of the axis normal of valve block seat (4) with driving slide plate (3) edge;
Be provided with sealing slide rail (7) between described slide plate (3) and the valve block seat (4);
Opposing side one side of the sealing surface of the inherent slide plate of described valve pocket (2) (3) is provided with anti-recoil guide rail (5);
Described valve block seat (4) one sides are provided with and are used for the chute (13) that connecting rod (9) slides, and the periphery of chute (13) is provided with Sealing (6), and when opening of valves or sealing, slide plate (3) all forms with Sealing (6) and is sealed and matched.
CN201210056655.1A 2012-03-06 2012-03-06 Linear sliding-vane type check valve and slurry pump Active CN102606470B (en)

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Publication number Priority date Publication date Assignee Title
CN111622915A (en) * 2020-06-22 2020-09-04 范凯 Flat straight-connected concrete ultrahigh-pressure delivery pump

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CN201896963U (en) * 2010-11-26 2011-07-13 武汉木兰环保设备有限公司 Sealing gate valve
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JPH0650440A (en) * 1992-07-27 1994-02-22 Kubota Corp Slide valve
WO1996012129A1 (en) * 1994-10-13 1996-04-25 Heinz Biesemeier Stop slide valve with a housing and a joint pipe
CN2526621Y (en) * 2002-02-01 2002-12-18 段永跃 Integrated self-pressure serous fluid valve
DE102007024792B3 (en) * 2007-05-26 2008-04-30 Abs-Armaturen Gmbh Abwasser-Systemelemente Slide valve without housing has one-piece integral seal with structure seal section, slide element seal section, seal holder as pressure rail with protrusions that pass through integral seal in installed position to engage frame openings
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Cited By (1)

* Cited by examiner, † Cited by third party
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CN111622915A (en) * 2020-06-22 2020-09-04 范凯 Flat straight-connected concrete ultrahigh-pressure delivery pump

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