CN102619743B - Distributing valve, pumping system and engineering machinery - Google Patents
Distributing valve, pumping system and engineering machinery Download PDFInfo
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- CN102619743B CN102619743B CN201210112694.9A CN201210112694A CN102619743B CN 102619743 B CN102619743 B CN 102619743B CN 201210112694 A CN201210112694 A CN 201210112694A CN 102619743 B CN102619743 B CN 102619743B
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Abstract
The invention provides a distributing valve. The distributing valve comprises a drive mechanism, a first valve body, a second valve body, a first valve plug and a second valve plug, wherein the first valve plug and the second valve plug are arranged in the first valve body and the second valve body respectively; the first valve body is provided with a first valve port and a second valve port which are communicated through the valve cavity; the second valve body is provided with a third valve port and a fourth valve port which are communicated through the valve cavity; the drive mechanism can drive the first valve plug and the second valve plug to synchronously move; when the first valve plug is used for closing the first valve port, the third valve port is opened; and when the second valve plug is used for closing the third valve port, the first valve port is opened. The invention also provides a pumping system and engineering machinery. According to the distributing valve, the pumping system and the engineering machinery, the aims of sucking materials and pumping can be filled by means of the two valve plugs, and the distributing valve has a simple structure, reliably distributes, saves the cost and can save assembly space. One drive mechanism is used for synchronously driving the two valve plugs, a control system is greatly simplified, the weight of the whole machine is reduced, and the distributing valve is convenient to assemble and transport.
Description
Technical field
The present invention relates to engineering machinery field, in particular to a kind of distributing valve, a kind of pumping system and a kind of engineering machinery.
Background technique
As shown in Figure 1, be the structural representation of a kind of distributing valve of the prior art, be for example applied in the conveying of carrying out slurry in grouting pump.Above-mentioned distributing valve comprises discharging oil cylinder 000, valve body 100, material feeding mouth 200, charging oil cylinder 300 and discharge port 400.When hydraulic oil enters left master cylinder rodless cavity, piston rod promotes left side concrete piston and will carry the slurry in cylinder to discharge; Now charging valve plug in left side, under the effect of left side charging oil cylinder 310, has sealed left side and has carried cylinder to lead to the passage of hopper, and discharging valve plug in left side, under the effect of left side discharging oil cylinder 010, is opened left side and carried cylinder to lead to the passage of discharge port 400; Carry the slurry of discharging in cylinder by discharged to discharge port 400, discharge port 400 is connected with conveyance conduit.Meanwhile, hydraulic oil enters right side master cylinder rod chamber makes piston rod drive right side concrete piston-retraction and suck slurry, and right side discharging valve plug 021 is under the effect of right side discharging oil cylinder 020, having sealed right side carries cylinder to lead to the passage of discharge port, right side charging valve plug 321 is under the effect of right side charging oil cylinder 320, opened right side and carried cylinder to lead to the passage of hopper, the slurry in hopper is inhaled into right conveying cylinder.When above-mentioned motion is reached home, left side master cylinder rodless cavity hydraulic oil promotes pilot operated directional control valve, realizes automatic reverse.So right side carries slurry in cylinder by discharged to discharge port 400, left side carries cylinder suck the slurry in hopper and complete a work cycle.Yet, use above-mentioned four oil cylinders to control respectively four valve plugs, complex structure, take up room and cost higher.
Summary of the invention
Technical problem to be solved by this invention is, a kind of new distributing valve is provided, and takes up room little, simple in structure, and cost is lower.
In view of this, the invention provides a kind of distributing valve, comprise driving mechanism, the first valve body and the second valve body, and be separately positioned on the first valve plug and the second valve plug in described the first valve body and described the second valve body, wherein, on described the first valve body, be provided with the first valve port and the second valve port that by valve pocket, are communicated with, described the second valve body is provided with the 3rd valve port and the 4th valve port being communicated with by valve pocket, described driving mechanism can drive described the first valve plug and described the second valve plug to be synchronized with the movement: when described the first valve plug seals described the first valve port, described the 3rd valve port is opened, when described the second valve plug seals described the 3rd valve port, described the first valve port is opened.
Preferably, described driving mechanism is hydraulic cylinder with double piston rods, the two ends of the cylinder barrel of described hydraulic cylinder with double piston rods are connected to respectively the first valve body and the second valve body, and piston rod one end of described hydraulic cylinder with double piston rods is connected with described the first valve plug after penetrating described the first valve body, the other end is connected with described the second valve plug after penetrating described the second valve body.
Preferably, at the two ends of described cylinder barrel, be installed with respectively the first flange and the second flange, one end of described cylinder barrel is connected to described the first valve body by described the first flange, and the other end of described cylinder barrel is connected to described the second valve body by described the second flange.
Preferably, described the first flange is provided with the first boss with one end that described the first valve body is connected, and described the second flange is provided with the second boss with one end that described the second valve body is connected; On described the first valve body, be provided with the first mounting hole matching with described the first boss, on described the second valve body, be provided with the second mounting hole matching with described the second boss; Described the first boss stretches in described the first mounting hole, and described the second boss stretches in described the second mounting hole.
Preferably, described the second valve port and described the 4th valve port are incorporated into a passage by breeches pipe.
The present invention also provides a kind of pumping system, comprise and carry cylinder, supply pipe and discharge nozzle, also comprise the distributing valve described in any one in technique scheme, wherein, described the first valve port is connected to described discharge nozzle, described the 3rd valve port is connected to described supply pipe, and described the second valve port and described the 4th valve port are all connected to described conveying cylinder.
Preferably, comprise two described conveying cylinders and two described distributing valves, described in each, carry cylinder to be connected with the 4th valve port with the second valve port of a described distributing valve.
Preferably, described second valve body is positioned at the top of described the first valve body.
The present invention also provides a kind of pumping system, comprise that two are carried cylinder, supply pipe and discharge nozzle, also comprise the distributing valve described in any one in two technique scheme, wherein, carry cylinder to be respectively the first conveying cylinder and second for two and carry cylinder, two described distributing valves are the first distributing valve and the second distributing valve, described first valve port of two described distributing valves is all connected to described first and carries cylinder, described the 3rd valve port of two described distributing valves is all connected to described second and carries cylinder, the second valve port of described the first distributing valve and the 4th valve port are all connected to described supply pipe, the second valve port of described the second distributing valve and the 4th valve port are all connected to described discharge nozzle.
Preferably, the first valve port of two described distributing valves is incorporated into a passage by breeches pipe; And/or the 3rd valve port of two described distributing valves is incorporated into a passage by breeches pipe.
Preferably, described in each, the first valve port of distributing valve and the 3rd valve port are all positioned in same level.
The present invention also provides a kind of engineering machinery, comprises the concrete pumping system described in any one in technique scheme, and described concrete pumping system obviously should have the beneficial effect that above-mentioned distributing valve has.
In sum, according to distributing valve of the present invention, adopt two valve plugs just can reach the object of suction and pumping, simple in structure, distribute reliably, save cost and can save installing space, adopt two valve plugs actions of the synchronous driving of a driving mechanism, simplified greatly control system, and alleviated the weight of complete machine, be convenient to install and transportation.In the pumping system of the above-mentioned distributing valve of application, can comprise two covers or the above distributing valve of two covers that link into an integrated entity, realize the uninterrupted pumping work that two or more carry cylinder.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of a kind of concrete valve of the prior art;
Fig. 2 is according to the schematic diagram of the distributing valve of the first embodiment of the present invention;
Fig. 3 is the schematic diagram of hydraulic cylinder with double piston rods in Fig. 2;
Fig. 4 is according to the schematic diagram of the concrete pumping system of second embodiment of the invention;
Fig. 5 is the schematic diagram of the first distributing valve when the first state in Fig. 4;
Schematic diagram when Fig. 6 is the second state of the first distributing valve in Fig. 4;
Fig. 7 is according to the schematic diagram of the first state of the pumping system of third embodiment of the invention;
Schematic diagram when Fig. 8 is the second state of pumping system in Fig. 7.
Embodiment
Below in conjunction with accompanying drawing, illustrate according to the specific embodiment of the present invention.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Fig. 2 is according to the schematic diagram of the distributing valve of the first embodiment of the present invention.
As shown in Figure 2, distributing valve in the present embodiment, comprise driving mechanism, the first valve body 1 and the second valve body 2 and be separately positioned on the first valve body 1 and the second valve body 2 in the first valve plug 104 and the second valve plug 204, wherein, on the first valve body 1, be provided with the first valve port 102 and the second valve port 103 that by valve pocket, are communicated with, the second valve body 2 is provided with the 3rd valve port 202 and the 4th valve port 203 being communicated with by valve pocket, driving mechanism can drive the first valve plug 104 and the second valve plug 204 to be synchronized with the movement: when first valve plug 104 sealing the first valve port 102, the 3rd valve port 202 is opened; When the second valve plug 204 sealing the 3rd valve port 202, the first valve port 102 is opened.
Adopt this distributing valve, by a driving mechanism, be alternately closed the first valve port 102 and the 3rd valve port 202, realize between the 3rd valve port 202 and the 4th valve port 203, being alternately communicated with between the first valve port 102 and the second valve port 103, it is simple in structure, allocation performance is reliable, provide cost savings and can save installing space and alleviated the weight of complete machine, be convenient to install and transportation.
In a kind of specific embodiment, this driving mechanism is hydraulic cylinder with double piston rods, the two ends of the cylinder barrel 5 of hydraulic cylinder with double piston rods are connected to respectively the first valve body 1 and the second valve body 2, and piston rod one end of hydraulic cylinder with double piston rods is connected with the first valve plug 104 after penetrating the first valve body 1, the other end is connected with the second valve plug 204 after penetrating the second valve body 2.
The first valve plug 104 and the second valve plug 204 drive by hydraulic cylinder with double piston rods, adopt an oil hydraulic cylinder just can control two pistons, have simplified the structure of distributing valve, have reduced space hold, have reduced the weight of distributing valve, are convenient to install and transportation; And, adopt hydraulically powered mode, can also use common working connection with pumping oil cylinder, be convenient to the setting of power source, control operation is convenient.
Certainly, this driving mechanism can also be motor driven gear or rack structure, or the linkage mechanism under actuated by cams etc., and this driving mechanism can have a lot, according to enlightenment of the present invention without realizing by creative work again.
In this distributing valve, oil hydraulic cylinder demand motive valve plug alternately seals the first valve port 102 and the 3rd valve port 202, when specific design, the first valve port 102 and the 3rd valve port 202 are oppositely arranged, and the end face of the first valve port 102 and the 3rd valve port 202 is arranged in parallel, to guarantee the sealability of two valve plugs and two valve ports.
Further, the second valve port 103 and the 4th valve port 203 are incorporated into a passage by breeches pipe 61, have expanded the using scope of distributing valve, make distributing valve can meet single pass need of work, and are beneficial to runner optimization, reduce the circulating resistance of medium.
Fig. 3 is the schematic diagram of hydraulic cylinder with double piston rods in Fig. 2.
Particularly, as shown in Figure 3, hydraulic cylinder with double piston rods and two valve bodies 1 and 2 Placement can be, at the two ends of cylinder barrel 5, be installed with respectively the first flange 41 and the second flange 42, one end of cylinder barrel 5 is connected to the first valve body 1 by the first flange 41, and the other end of cylinder barrel 5 is connected to the second valve body 2 by the second flange 42.
In a kind of specific embodiment, one end that the first flange 41 is connected with the first valve body 1 is provided with one end that the first boss 411, the second flanges 42 are connected with the second valve body 2 and is provided with the second boss 421; On the first valve body 1, be provided with the first mounting hole matching with the first boss 411, on the second valve body 2, be provided with the second mounting hole matching with the second boss 421; The first boss 411 stretches in the first mounting hole, and the second boss 421 stretches in the second mounting hole.
Adopted technique scheme, can reach the good sealing effect of flange and valve body joint, effectively avoided by the seepage of the medium of valve body, and such structure can be born higher pressure, can meet the operating mode in jumbo, have again, distributing valve also comprises that two flanges can prevent from contacting the cylinder barrel 5 that concrete piston rod enters hydraulic cylinder with double piston rods in the process retreating, after just having avoided adhering on hydraulic cylinder with double piston rods piston rod concrete, there are strong wearing and tearing with cylinder barrel 5, and then avoided sealing good between piston rod and cylinder barrel 5 destroyed.
Wherein, owing to man type pipe fitting, two valve bodies being coupled together, so as preferred implementation, only in one end of hydraulic cylinder with double piston rods, by flange, be fixedly connected with valve body, but not two ends are all fixedly connected with valve body, thereby can avoid oil cylinder or humanoid pipe fitting size slightly during deviation two valve bodies the constraint of crossing of oil cylinder is caused installing the problems such as difficulty, only at one end be fixedly connected with the requirement that can reduce the accuracy of manufacturing of man type pipe fitting and oil cylinder with valve body, reduce manufacture cost, be also convenient to install.
Fig. 4 is according to the schematic diagram of the concrete pumping system of second embodiment of the invention; Fig. 5 is the schematic diagram of the first distributing valve when the first state in Fig. 4; Schematic diagram when Fig. 6 is the second state of the first distributing valve in Fig. 4.
On the basis of above-mentioned distributing valve, the present invention proposes a kind of pumping system of applying above-mentioned distributing valve, this pumping system comprises carries cylinder 9, supply pipe 7 and discharge nozzle 8, the distributing valve that also comprises any one in technique scheme, wherein, the first valve port 102 is connected to discharge nozzle 8, the three valve ports 202 and is connected to supply pipe 7, the second valve ports 103 and the 4th valve port 203 and is all connected to and carries cylinder 9.
As shown in Figure 4, in concrete application process, in order to realize the uninterrupted pumping effect to material, above-mentioned pumping system can comprise that two are carried cylinder 9 and two distributing valves, and each carries cylinder 9 to be connected with the 4th valve port 203 with the second valve port 103 of a distributing valve respectively.
Adopt in the pumping system of two distributing valves, in order to improve the holistic resistant behavior of distributing mechanism, two independent moulding of distributing valve, and between is fixed by connected element.
As preferred embodiment, in distributing valve, the top that the second valve body 2 is positioned at the first valve body 1 is set, be that pumping system is from the top charging of distributing valve, and from the below discharging of distributing valve, like this, in suction and stock process, can also play by the gravity of material auxiliary effect, so that improve suction and stock performance.
In the present embodiment, the second valve port 103 is incorporated into a passage with the 4th valve port 203 by breeches pipe 61 and is connected with carrying cylinder, has expanded the using scope of distributing valve, makes distributing valve can meet single pass need of work, and be beneficial to runner optimization, reduce the circulating resistance of medium.
In addition, as seen from the figure, breeches pipe 61 top is shorter than bottom, is to be used for charging due to top, and shorter setting in the time of can avoiding carrying cylinder pump material the top of too much feed blocking, has optimized pumping procedure, has improved pumping efficiency.
Above-mentioned pumping system in working order under, by hydraulic cylinder with double piston rods, alternately seal the first valve port 102 and the 3rd valve port 202, realize to carry the switching of cylinder under suction and stock state, thereby realize the uninterrupted pumping of material.
Particularly, two distributing valves are that the first distributing valve 301 and 302, two conveying cylinders 9 of the second distributing valve are that the first conveying cylinder 901 and second is carried cylinder 902.
In the first distributing valve 301:
As shown in Figure 5, under the first state, first valve plug 104 sealing the first valve ports 102, the 3rd valve port 202 is opened, the 3rd valve port 202 is communicated with the 4th valve port 203, and material enters and carries cylinder 901 by valve pocket and through the 4th valve port 203 from the 3rd valve port 202, carries cylinder 901 to carry out suction action;
As shown in Figure 6, under the second state, the second valve plug 204 sealing the 3rd valve ports 202, the first valve port 102 is opened, the first valve port 102 is communicated with the second valve port 102, carry the material in cylinder 901 to pump by valve pocket and through the first valve port 102 from the second valve port 103, carry cylinder 901 to carry out stock action.
In the second distributing valve 302 with the opposite states of the first distributing valve 301, the first distributing valve 301 is when the first state, the second distributing valve 302 is in the second state, otherwise in like manner.Another carries cylinder pump material simultaneously so just can to carry cylinder suction at one, carries cylinder to pass through alternately suction and stock, has realized material uninterrupted pumping effect for two.
Fig. 7 is according to the schematic diagram of the first state of the pumping system of third embodiment of the invention; Schematic diagram when Fig. 8 is the second state of pumping system in Fig. 7.
As shown in Figure 7 and Figure 8, pumping system in the present embodiment, comprise that two are carried cylinder 9, supply pipe 7 and discharge nozzle 8, the distributing valve that also comprises any one in two technique scheme, wherein, carry cylinder 9 to be respectively the first conveying cylinder 901 and second for two and carry cylinder 902, two distributing valves are the first distributing valve 301 and the second distributing valve 302, the first valve port 102 of two distributing valves is all connected to the first conveying cylinder 901, the 3rd valve port 202 of two distributing valves is all connected to the second conveying cylinder 902, the second valve port 103 and the 4th valve port 203 of the first distributing valve are all connected to supply pipe 7, the second valve port 103 and the 4th valve port 203 of the second distributing valve are all connected to discharge nozzle 8.
When specific design, the first valve port 102 of two distributing valves is incorporated into a passage by breeches pipe 62; And/or the 3rd valve port 202 of two distributing valves is incorporated into a passage by breeches pipe 62.In this technological scheme, expanded the using scope of distributing valve, make distributing valve can meet single pass need of work, and be beneficial to runner optimization, reduce the circulating resistance of medium.
In this embodiment, two are carried cylinders 9 is horizontal arrangement, so that the first valve port 102 of each distributing valve and the 3rd valve port 202 are all positioned in same level is more reasonable, accordingly, the oil hydraulic cylinder of two distributing valves is horizontally disposed with, as shown in Figure 7 and Figure 8.
In the present embodiment, distributing valve can be made of one moulding, and moulding being fixed by modes such as bolts respectively, does not repeat them here yet.
Based on technique scheme, the working method of the pumping system in the present embodiment is as follows:
When pumping system is during in the first state shown in Fig. 7, in the first distributing valve 301, the first valve plug 104 seals the first valve port 103, the 3rd valve port 202 is communicated with the 4th valve port 203, material is entered in the second conveying cylinder 902 by valve pocket and by the 3rd valve port 202 by the 4th valve port 203, and second carries cylinder 902 to carry out suction by the first distributing valve 301 moves; And now in the second distributing valve 302, the first valve port 102 is opened, the second valve plug 204 seals the 3rd valve port 202, the first valve port 102 is communicated with the second valve port 103, first carries the material in cylinder 901 outwards to be pumped by valve pocket and by the second valve port 103 by the first valve port 102, and first carries cylinder 901 to carry out stock by the second distributing valve 302 moves.
When completing this pumping stroke, enter next pumping stroke, now, the commutation of pumping main system, carries cylinder to switch pumping state thereby control two, first carries cylinder 901 to switch to suction by stock action moves, and second carries cylinder 902 to switch to stock by suction action moves.
Under the second state, as shown in Figure 8, in the first distributing valve 301, the first valve port 102 is opened, the second valve plug 204 seals the 3rd valve port 202, the first valve port 102 is communicated with the second valve port 103, and material is entered in the first conveying cylinder 901 by valve pocket and by the first valve port 102 by the secondth valve port 103, and first carries cylinder 901 to carry out suction by the first distributing valve 301 moves; And now in the second distributing valve 302, the first valve plug 104 seals the first valve port 103, the second valve port 202 is communicated with the 4th valve port 203, second carries the material in cylinder 902 outwards to be pumped by valve pocket and by the 4th valve port 203 by the 3rd valve port 202, and second carries cylinder 902 to carry out stock by the second distributing valve 302 moves.
Pumping system in the present embodiment is compared with pumping system in the second embodiment, in the second embodiment, valve plug in a distributing valve can be controlled the state switching that this distributing valve carries out suction and stock, and in the present embodiment, valve plug in a distributing valve can be controlled this distributing valve to different conveying cylinder suctions, and the valve plug in another distributing valve can be controlled this distributing valve to different conveying cylinder pump material.
Pumping system provided by the invention is applied in engineering machinery, can obtains the embodiment of engineering machinery provided by the present invention, described engineering machinery obviously should have the beneficial effect that above-mentioned pumping system has.
In sum, according to distributing valve of the present invention, adopt two valve plugs just can reach the object of suction and pumping, simple in structure, distribute reliably, save cost and can save installing space, adopt two valve plugs actions of the synchronous driving of a driving mechanism, simplified greatly control system, and alleviated the weight of complete machine, be convenient to install and transportation.And, in the pumping system of the above-mentioned distributing valve of application, can comprise two covers or two distributing valves that overlap with upper valve body and valve plug that link into an integrated entity, realize the uninterrupted pumping work that two or more carry cylinders.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a distributing valve, it is characterized in that, comprise driving mechanism, the first valve body (1) and the second valve body (2) and be separately positioned on described the first valve body (1) and described the second valve body (2) in the first valve plug (104) and the second valve plug (204), wherein
On described the first valve body (1), be provided with the first valve port (102) and the second valve port (103) that by valve pocket, are communicated with, described the second valve body (2) is provided with the 3rd valve port (202) and the 4th valve port (203) being communicated with by valve pocket, and described driving mechanism can drive described the first valve plug (104) and described the second valve plug (204) to be synchronized with the movement:
When described the first valve plug (104) seals described the first valve port (102), described the 3rd valve port (202) is opened;
When described the second valve plug (204) seals described the 3rd valve port (202), described the first valve port (102) is opened;
Described driving mechanism is hydraulic cylinder with double piston rods, the two ends of the cylinder barrel of described hydraulic cylinder with double piston rods (5) are connected to respectively the first valve body (1) and the second valve body (2), and piston rod one end of described hydraulic cylinder with double piston rods is connected with described the first valve plug (104) after penetrating described the first valve body (1), the other end is connected with described the second valve plug (204) after penetrating described the second valve body (2);
At the two ends of described cylinder barrel (5), be installed with respectively the first flange (41) and the second flange (42), one end of described cylinder barrel (5) is connected to described the first valve body (1) by described the first flange (41), and the other end is connected to described the second valve body (2) by described the second flange (42).
2. distributing valve according to claim 1, is characterized in that,
One end that described the first flange (41) is connected with described the first valve body (1) is provided with the first boss (411), and one end that described the second flange (42) is connected with described the second valve body (2) is provided with the second boss (421);
On described the first valve body (1), be provided with the first mounting hole matching with described the first boss (411), on described the second valve body (2), be provided with the second mounting hole matching with described the second boss (421);
Described the first boss (411) stretches in described the first mounting hole, and described the second boss (421) stretches in described the second mounting hole.
3. distributing valve according to claim 1 and 2, is characterized in that, described the second valve port (103) is incorporated into a passage with described the 4th valve port (203) by breeches pipe.
4. a pumping system, is characterized in that, comprises and carries cylinder (9), supply pipe (7) and discharge nozzle (8), it is characterized in that, also comprises distributing valve as claimed any one in claims 1 to 3, wherein,
Described the first valve port (102) is connected to described discharge nozzle (8), described the 3rd valve port (202) is connected to described supply pipe (7), and described the second valve port (103) and described the 4th valve port (203) are all connected to described conveying cylinder (9).
5. pumping system according to claim 4, it is characterized in that, comprise two described conveying cylinders (9) and two described distributing valves, described in each, carry cylinder (9) to be connected with the 4th valve port (203) with second valve port (103) of a described distributing valve.
6. pumping system according to claim 5, is characterized in that, described the second valve body (2) is positioned at the top of described the first valve body (1).
7. a pumping system, is characterized in that, comprises that two are carried cylinder (9), supply pipe (7) and discharge nozzle (8), it is characterized in that, also comprises two distributing valves as claimed any one in claims 1 to 3, wherein,
Carry cylinder (9) to be respectively the first conveying cylinder (901) and second for two and carry cylinder (902), two described distributing valves are the first distributing valve (301) and the second distributing valve (302),
Described first valve port (102) of two described distributing valves is all connected to described first and carries cylinder (901), described the 3rd valve port (202) of two described distributing valves is all connected to described second and carries cylinder (902), second valve port (103) of described the first distributing valve and the 4th valve port (203) are all connected to described supply pipe (7), and second valve port (103) of described the second distributing valve and the 4th valve port (203) are all connected to described discharge nozzle (8).
8. pumping system according to claim 7, is characterized in that, first valve port (102) of two described distributing valves is incorporated into a passage by breeches pipe; And/or the 3rd valve port (202) of two described distributing valves is incorporated into a passage by breeches pipe.
9. according to the pumping system described in claim 7 or 8, it is characterized in that, described in each, first valve port (102) of distributing valve is all positioned in same level with the 3rd valve port (202).
10. an engineering machinery, is characterized in that, comprises the pumping system as described in any one in claim 4 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112694.9A CN102619743B (en) | 2012-04-17 | 2012-04-17 | Distributing valve, pumping system and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112694.9A CN102619743B (en) | 2012-04-17 | 2012-04-17 | Distributing valve, pumping system and engineering machinery |
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| Publication Number | Publication Date |
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| CN102619743A CN102619743A (en) | 2012-08-01 |
| CN102619743B true CN102619743B (en) | 2014-12-10 |
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| CN104358684B (en) * | 2014-10-30 | 2016-08-24 | 合肥工业大学 | A kind of flow equilibrium device for piston pump |
| CN107956666A (en) * | 2018-01-09 | 2018-04-24 | 长沙紫宸科技开发有限公司 | A kind of two-cylinder type sludge pump with discharging sealing switching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07253078A (en) * | 1994-03-14 | 1995-10-03 | Ishigaki Mech Ind Co | Valve device at carrying device of heavily viscous object |
| IL143599A (en) * | 2001-06-06 | 2009-06-15 | Zvi Weingarten | Control valve |
| JP4335543B2 (en) * | 2003-01-27 | 2009-09-30 | 東京都 | Reciprocating double-row volumetric pump |
| JP2008075583A (en) * | 2006-09-22 | 2008-04-03 | Mhi Environment Engineering Co Ltd | Reciprocating piston pump, its control method and force feed amount detection method |
| CN201671345U (en) * | 2010-06-11 | 2010-12-15 | 三一重工股份有限公司 | Pumping device and allocating mechanism thereof and concrete pumping vehicle |
| CN201902607U (en) * | 2010-11-01 | 2011-07-20 | 深圳市首熙机械设备有限公司 | Single-cylinder pipeline type proportional valve |
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