CN210239923U - Three-way ball valve piston type metering pump - Google Patents
Three-way ball valve piston type metering pump Download PDFInfo
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- CN210239923U CN210239923U CN201921105874.8U CN201921105874U CN210239923U CN 210239923 U CN210239923 U CN 210239923U CN 201921105874 U CN201921105874 U CN 201921105874U CN 210239923 U CN210239923 U CN 210239923U
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- ball valve
- way ball
- flow passage
- liquid
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Abstract
The utility model discloses a three-way ball valve piston measuring pump, including three-way ball valve and piston measuring pump, its characterized in that: the left side and the right side of the valve seat of the three-way ball valve are respectively provided with a feeding port and a discharging port, the ball valve core of the three-way ball valve is provided with an L-shaped flow passage, and the L-shaped flow passage is composed of a lateral flow passage used for respectively communicating the feeding port and the discharging port and a central flow passage used for communicating the piston metering pump. The utility model discloses accomplish more extensively with the measuring pump to the accommodation of liquid material, almost all various viscosity's liquid, the liquid that contains the granule, produce the liquid of crystal easily. The utility model discloses simple structure can realize accurate pump sending liquid measure.
Description
Technical Field
The utility model belongs to the technical field of the measuring pump technique and specifically relates to indicate piston measuring pump.
Background
Plunger, piston and bellows metering pumps generally provide intermittent delivery or filling of metered liquids. The plunger type and piston type pump can show very accurate liquid metering, and the metering accuracy of the air sac type metering pump is also high. However, the control valve controlling the input and output of the liquid is the key to determining the actual accuracy of the metering pump. Generally, a metering pump adopts a check valve as the input and output of the metering pump, and the check valve pump shows better performance in the aspects of metering and liquid injection of liquid with low viscosity and no particles; however, the one-way valve pump shows a poor adaptation to a high viscosity liquid, a liquid which is easily crystallized, or a liquid containing particles. For this purpose, a 90 ° three-way rotary valve is generally used as an input/output control valve of the pump. The 90-degree three-way rotary valve mostly adopts hard materials as a rotary valve core and a rotary valve sleeve, and the metering precision of the pump is ensured by the precise clearance fit between the rotary valve core and the rotary valve sleeve. The clearance between the valve core and the valve sleeve is too large, the precision of the liquid with low viscosity can be reduced due to leakage, the clearance fit is too small, the valve can not adapt to the liquid with high viscosity, and the clamping phenomenon is easy to occur on the liquid easy to crystallize. In addition, such 90 ° three-way rotary valve pumps generally cannot withstand higher pressures, and the output pressure of the pump is limited.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a piston measuring pump that adaptability is wide, can realize accurate measurement.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a three-way ball valve piston type measuring pump, including three-way ball valve and piston measuring pump, its characterized in that: the left side and the right side of the valve seat of the three-way ball valve are respectively provided with a feeding port and a discharging port, the ball valve core of the three-way ball valve is provided with an L-shaped flow passage, and the L-shaped flow passage is composed of a lateral flow passage used for respectively communicating the feeding port and the discharging port and a central flow passage used for communicating the piston metering pump.
On the basis, the ball valve core is driven to rotate by a rotary air cylinder.
Adopt the utility model discloses the beneficial effect who brings: the utility model discloses accomplish more extensively with the measuring pump to the accommodation of liquid material, almost all various viscosity's liquid, the liquid that contains the granule, produce the liquid of crystal easily. The utility model discloses simple structure can realize accurate pump sending liquid measure.
Drawings
FIG. 1 is a front view of the three-way ball valve piston type metering pump of the present invention;
fig. 2 is a side view of the three-way ball valve piston type metering pump of the present invention.
Detailed Description
As shown in fig. 1 and 2, a three-way ball valve piston type metering pump, including three-way ball valve 1 and piston metering pump 10 the utility model discloses in, the 2 left and right sides of disk seat of three-way ball valve 1 are equipped with pan feeding mouth 3 and discharge gate 4 respectively, and its ball case 5 is opened has L shape runner 6, and L shape runner 6 comprises the side direction runner 7 that is used for putting through pan feeding mouth 3 and discharge gate 4 respectively and the centre runner 8 of putting through piston metering pump 2.
The utility model provides a pan feeding mouth 3 and discharge gate 4 branch of three-way ball valve establish in the left and right sides of disk seat 2, form 180 rotatory ball valves. A ball valve core 5 with an L-shaped flow channel 6 at an angle of 90 degrees is adopted, and a lateral flow channel 7 of the ball valve core 5 rotates back and forth at 180 degrees and is alternately communicated with a feeding port 3 and a discharging port 4. At any position of rotation, the feed inlet 3 and the discharge outlet 4 are not communicated, so that the accurate and stable metering effect is ensured. Compared with a traditional 90-degree three-way rotary valve, the 180-degree rotary ball valve with a smaller volume can achieve a larger drift diameter under the condition of no leakage during conversion. Meanwhile, the metering pump can bear higher pressure, so that higher output pressure is achieved. It can effectively cope with liquids in various viscosity ranges, liquids containing particles, and liquids which are easy to crystallize. Both accuracy and stability are very good.
In the present embodiment, the ball valve element 5 is driven to rotate by a rotary cylinder 9. The rotary cylinder 9 is adopted to realize simpler and more controllable structure of the three-way ball valve piston type metering pump.
Claims (2)
1. The utility model provides a three-way ball valve piston type measuring pump, including three-way ball valve and piston measuring pump, its characterized in that: the left side and the right side of the valve seat of the three-way ball valve are respectively provided with a feeding port and a discharging port, the ball valve core of the three-way ball valve is provided with an L-shaped flow passage, and the L-shaped flow passage is composed of a lateral flow passage used for respectively communicating the feeding port and the discharging port and a central flow passage used for communicating the piston metering pump.
2. The three-way ball valve piston metering pump of claim 1, wherein: the ball valve core is driven to rotate by a rotary cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921105874.8U CN210239923U (en) | 2019-07-12 | 2019-07-12 | Three-way ball valve piston type metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921105874.8U CN210239923U (en) | 2019-07-12 | 2019-07-12 | Three-way ball valve piston type metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210239923U true CN210239923U (en) | 2020-04-03 |
Family
ID=69991857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921105874.8U Active CN210239923U (en) | 2019-07-12 | 2019-07-12 | Three-way ball valve piston type metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210239923U (en) |
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2019
- 2019-07-12 CN CN201921105874.8U patent/CN210239923U/en active Active
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