CN204941901U - The threeway metering ball valve of metering pump - Google Patents
The threeway metering ball valve of metering pump Download PDFInfo
- Publication number
- CN204941901U CN204941901U CN201520580398.0U CN201520580398U CN204941901U CN 204941901 U CN204941901 U CN 204941901U CN 201520580398 U CN201520580398 U CN 201520580398U CN 204941901 U CN204941901 U CN 204941901U
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- China
- Prior art keywords
- passage
- metering
- metering pump
- pump
- ball valve
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- Expired - Fee Related
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- Check Valves (AREA)
Abstract
The utility model discloses 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, described valve pocket has the public passage being communicated with 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.The accommodation of metering pump to liquid material is accomplished more extensive by the utility model, the liquid of nearly all various viscosity, the liquid containing the liquid of particle, easily generation crystal.Because the utility model structure is simple, only need adopt single power source, effectively can reduce manufacture cost.
Description
Technical field
The utility model relates to metering pump technical field, refers 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.
Model utility content
The technical problems to be solved in the utility model 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 utility model brings: the accommodation of metering pump to liquid material is accomplished more extensive by the utility model, the liquid of nearly all various viscosity, the liquid containing the liquid of particle, easily generation crystal.Because the utility model structure is simple, only need adopt single power source, effectively can reduce manufacture cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model threeway 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 utility model, 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 the utility model threeway metering ball valve 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.
The utility model threeway metering ball valve, 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.
Threeway of the present utility model is adopted 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 |
|---|---|---|---|
| CN201520580398.0U CN204941901U (en) | 2015-08-02 | 2015-08-02 | The threeway metering ball valve of metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520580398.0U CN204941901U (en) | 2015-08-02 | 2015-08-02 | The threeway metering ball valve of metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941901U true CN204941901U (en) | 2016-01-06 |
Family
ID=55009339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520580398.0U Expired - Fee Related CN204941901U (en) | 2015-08-02 | 2015-08-02 | The threeway metering ball valve of metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204941901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020130A (en) * | 2015-08-02 | 2015-11-04 | 黄锦成 | Three-way metering ball valve of metering pump |
-
2015
- 2015-08-02 CN CN201520580398.0U patent/CN204941901U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020130A (en) * | 2015-08-02 | 2015-11-04 | 黄锦成 | Three-way metering ball valve of metering pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160802 |