CN105020130A - Three-way metering ball valve of metering pump - Google Patents
Three-way metering ball valve of metering pump Download PDFInfo
- Publication number
- CN105020130A CN105020130A CN201510472341.3A CN201510472341A CN105020130A CN 105020130 A CN105020130 A CN 105020130A CN 201510472341 A CN201510472341 A CN 201510472341A CN 105020130 A CN105020130 A CN 105020130A
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- metering
- channel
- metering pump
- valve
- ball valve
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Abstract
The invention discloses a three-way metering ball valve of a metering pump. The ball valve comprises a valve sleeve, a ball valve element rotatably arranged in the valve sleeve and a driving device for driving the valve element to rotate. The valve sleeve is provided with a public channel for being communicated with a pump chamber of the metering pump, an input channel and an output channel, wherein the input channel and the output channel are perpendicular to and are communicated with the public channel and are opposite in direction; an L-shaped channel is formed in the valve element and is provided with an axial channel communicated with the public channel and a radial channel which is communicated with the input channel and the output channel alternatively along with rotation of the valve element. The adaptation range of the metering pump to liquid materials is wider, and the metering pump almost adapts to liquid with various viscosities, liquid containing particles and liquid easily generating crystal substances. Due to the fact that the ball valve is simple in structure, only a single power source is needed, and the manufacturing cost can be effectively reduced.
Description
Technical field
The present invention relates to metering pump technical field, refer in particular to the control valve of metering pump.
Background technique
Plunger type, piston type and windbag formula metering pump can carry out intermittent delivery or fluid injection to measured liquid usually.The pump of plunger type, piston can show liquid meter very accurately, and the measuring accuracy of windbag formula metering pump is also very high.But the control valve controlling liquid input output is the key determining metering pump available accuracy.The more employing one-way valve of usual metering pump as the input output of metering pump, one-way valve pump in general low viscosity, not containing the metering in the liquid of particle and fluid injection, show reasonable performance; And for high viscosity liquid, the liquid of easy crystallization, or the liquid containing particle, one-way valve pump shows the situation of being far from suitable.To this, 90 ° of three way rotary valve usually can be adopted as the input output control valve of pump.This 90 ° of three way rotary valve majority adopts hard material as rotary spool and rotates valve pocket, by Spielpassung accurate between rotary plate and rotary valve housing, ensures the measuring accuracy of pump.Be characterized in, during excesssive gap between spool and valve pocket, to the low liquid of viscosity because the reason precision of leaking can decline, too small Spielpassung, can not adapt to high viscosity liquid again, for the liquid being easy to crystallization, easily occurs the phenomenon stuck.In addition, this 90 ° of three way rotary valve pump, the pressure that ability is not higher usually, the delivery pressure of pump is limited.
Summary of the invention
The technical problem to be solved in the present invention is to provide one can adapt to various physical property liquid, to realize the threeway metering ball valve of metering pump accurate measurement.
For solving the problems of the technologies described above adopted technological scheme: a kind of threeway metering ball valve of metering pump, include valve pocket, be installed in rotation on the ball valve core in valve pocket and drive the drive unit of valve core rotation, it is characterized in that: described valve pocket has to be communicated with the public passage of metering pump pump thorax, and perpendicular to and be communicated in public passage, the input channel that direction is contrary and output channel, spool offers L shape passage, L shape passage has the axial passage that is communicated with public passage and the radial passage of alternate communication input channel and output channel along with the rotation of spool.
On the basis of the above, described drive unit is rotary cylinder, and the rotating shaft of rotary cylinder is fixedly connected with spool circumference.
Can preferably, described metering pump is plunger type or fluid piston type or windbag formula metering pump.
Adopt the beneficial effect that the present invention brings: the accommodation of metering pump to liquid material is accomplished more extensive by the present invention, the liquid of nearly all various viscosity, the liquid containing the liquid of particle, easily generation crystal.Because structure of the present invention is simple, only need adopt single power source, effectively can reduce manufacture cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of threeway of the present invention metering ball valve.
Embodiment
As shown in Figure 1, a kind of threeway metering ball valve of metering pump, the drive unit including valve pocket 1, be installed in rotation on the ball valve core 2 in valve pocket 1 and drive spool 2 to rotate.In the present invention, described valve pocket 1 has to be communicated with metering pump (common part, do not indicate in figure) public passage 11 of pump thorax, and perpendicular to and be communicated in the contrary input channel 12 in public passage 11, direction and output channel 13, spool 2 offers L shape passage 21, L shape passage 21 have be communicated with public passage 11 axial passage 21.1 and along with the rotation of spool 2 radial passage 21.2 of alternate communication input channel 12 and output channel 13.
It is contrary that the input channel 12 of threeway metering ball valve of the present invention and output channel 13 are set as direction, forms 180 ° of rotary ball valves, is a kind of input output control valve of threeway metering ball valve as metering pump not having leak of liquid.The liquid of various range of viscosities, liquid containing particle can be successfully managed, and the liquid of easily crystallization.Precision and stability can be done well.90 ° of three relatively traditional way rotary valve, 180 ° of rotary ball valves of less volume, under the condition of not leaking when changing, can accomplish larger latus rectum.Meanwhile, metering pump can bear larger pressure, thus reaches larger delivery pressure.
Usually the ball valve of general liquid control, due to its structure, in ball valve transfer process, can not passage completely between hermetically closing constrained input, produce the loss of liquid capacity, accurate metering pump can not be used for and control, be used for control flow check to throttle down.
Threeway metering ball valve of the present invention, adopt the ball valve core 2 of the L-type passage 21 being 90 °, the axial passage 21 of L shape passage 21 keeps being communicated with public passage 11, and back rotation and alternate communication input channel 12 and output channel 13 are come along with 180 ° of spool 2 in radial passage 21.2.Any position rotated, input channel 12 and output channel 13 may without any what be communicated with.That is, the overall process of pump liquid input and output, input channel 12 liquid, can only be entered in the metering cavity of pump thorax by the public passage 11 of valve.And similarly, the liquid in pump thorax measuring cavity, can only flow out to output channel 13 by the public passage 11 of valve.Liquid does not have metered volume to lose in this metering ball valve, ensure that smart metastable metering effect.
In the present embodiment, drive 2 devices rotated of spool to adopt rotary cylinder 3, rotary cylinder 3 can be fixed on valve pocket 1, and the rotating shaft 31 of rotary cylinder 3 is fixedly connected with spool 2 circumference through valve pocket 1.Metering pump can adopt plunger type or fluid piston type or windbag formula metering pump.
Adopt threeway of the present invention to measure ball valve pump, compared with traditional unidirectional valve-type, rotary valve shape pump, show larger compatibility, on the basis remaining one-way valve pump, each advantage of rotary valve pump, substantially can be applicable to the liquid of all physical propertys.
Claims (3)
1. the threeway metering ball valve of a metering pump, include valve pocket, be installed in rotation on the ball valve core in valve pocket and drive the drive unit of valve core rotation, it is characterized in that: described valve pocket has to be communicated with the public passage of metering pump pump thorax, and perpendicular to and be communicated in the contrary input channel in public passage, direction and output channel, spool offers L shape passage, L shape passage has the axial passage that is communicated with public passage and the radial passage of alternate communication input channel and output channel along with the rotation of spool.
2. the threeway metering ball valve of metering pump according to claim 1, it is characterized in that: described drive unit is rotary cylinder, the rotating shaft of rotary cylinder is fixedly connected with spool circumference.
3. the threeway metering ball valve of metering pump according to claim 1, is characterized in that: described metering pump is plunger type or fluid piston type or windbag formula metering pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472341.3A CN105020130A (en) | 2015-08-02 | 2015-08-02 | Three-way metering ball valve of metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472341.3A CN105020130A (en) | 2015-08-02 | 2015-08-02 | Three-way metering ball valve of metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105020130A true CN105020130A (en) | 2015-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510472341.3A Pending CN105020130A (en) | 2015-08-02 | 2015-08-02 | Three-way metering ball valve of metering pump |
Country Status (1)
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| CN (1) | CN105020130A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179587B1 (en) * | 1998-05-19 | 2001-01-30 | Hassia Verpackungsmaschinen Gmbh | Dispensing valve mounted on dispensing pumps |
| CN1776273A (en) * | 2005-11-30 | 2006-05-24 | 叶葱 | Flow-selecting valve |
| CN101512148A (en) * | 2006-09-08 | 2009-08-19 | 诺登机械公司 | Metering pump |
| CN201377402Y (en) * | 2009-04-13 | 2010-01-06 | 成都经纬机械制造有限公司 | Rotary valve piston-type pneumatic stroke pump |
| CN201795094U (en) * | 2010-09-08 | 2011-04-13 | 鞍钢股份有限公司 | Three-way change valve |
| CN202252120U (en) * | 2011-08-30 | 2012-05-30 | 王振国 | Novel three-way switch valve |
| CN204941901U (en) * | 2015-08-02 | 2016-01-06 | 黄锦成 | The threeway metering ball valve of metering pump |
-
2015
- 2015-08-02 CN CN201510472341.3A patent/CN105020130A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179587B1 (en) * | 1998-05-19 | 2001-01-30 | Hassia Verpackungsmaschinen Gmbh | Dispensing valve mounted on dispensing pumps |
| CN1776273A (en) * | 2005-11-30 | 2006-05-24 | 叶葱 | Flow-selecting valve |
| CN101512148A (en) * | 2006-09-08 | 2009-08-19 | 诺登机械公司 | Metering pump |
| CN201377402Y (en) * | 2009-04-13 | 2010-01-06 | 成都经纬机械制造有限公司 | Rotary valve piston-type pneumatic stroke pump |
| CN201795094U (en) * | 2010-09-08 | 2011-04-13 | 鞍钢股份有限公司 | Three-way change valve |
| CN202252120U (en) * | 2011-08-30 | 2012-05-30 | 王振国 | Novel three-way switch valve |
| CN204941901U (en) * | 2015-08-02 | 2016-01-06 | 黄锦成 | The threeway metering ball valve of metering pump |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |
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| RJ01 | Rejection of invention patent application after publication |