CN205173565U - Rotatory check valve of tee bend - Google Patents
Rotatory check valve of tee bend Download PDFInfo
- Publication number
- CN205173565U CN205173565U CN201520972281.7U CN201520972281U CN205173565U CN 205173565 U CN205173565 U CN 205173565U CN 201520972281 U CN201520972281 U CN 201520972281U CN 205173565 U CN205173565 U CN 205173565U
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- moving plate
- still
- check valve
- port
- fitting surface
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Abstract
The utility model provides a rotatory check valve of tee bend for the sampling system of analytical instrument belongs to the analysis field. This rotatory check valve of tee bend includes moving plate, still and motor, moving plate and still contact cooperation, and moving plate upper portion is connected with motor drive, is equipped with E type recess on the moving plate fitting surface, rather than matching, is equipped with three L of group type holes on the still fitting surface, E type recess is formed by connecting convex recess and the radial groove through the centre of a circle, each organizes L type hole all has a port to establish on the still fitting surface, and another port is established on the still periphery wall, and the three port on the still fitting surface is the straight line arranges, and wherein a set of port lies in the still center, and two sets of ports distribute in both sides in addition. The utility model discloses the simple structure, processing is convenient, and is not high to the material requirements, easily improves the machining precision. The whole direction of rotation who advances the process step motor of appearance, evacuation does not change, has avoided traditional rotation type check valve to need clockwise, anticlockwise switching rotatory, and the axle that causes and the wearing and tearing phenomenon of locating pin.
Description
technical field:
The utility model relates to the one-way valve in a kind of analytical instrument, for the inlet system of analytical instrument, belongs to analysis field.
background technique:
Common or comparatively early one-way valve general on the market is all made up of valve body, valve rod and spool, can only complete the fluid path of unidirectional single-pass, in the stream of some complexity, need multiple one-way valve to work simultaneously and just can reach the job requirement of stream.The drawback of this kind of one-way valve needs higher accuracy of manufacturing, and preparation process requires higher, cost is high; And particulate contamination receptance in convection cell is high, if valve body and spool speckle with small dust, the grains of sand, fiber etc., directly will affects sealing, cause leakage; This kind of one-way valve often needs axle and moving plate to do reciprocating rotation simultaneously, exacerbates the wearing and tearing at axle and locating stud position, shortens working life.
summary of the invention:
The utility model is the shortcoming overcoming above-mentioned traditional one-way valve, provides a kind of threeway rotary check valve.
Concrete technological scheme of the present utility model is as follows:
A kind of threeway rotary check valve, comprise moving plate, still and motor, moving plate contacts with still and coordinates, moving plate top is connected with motor-driven, moving plate fitting surface is provided with E type groove, match with it, still fitting surface is provided with three groups of L-type holes, and described E type groove is formed by connecting by circular groove with through the radial groove in the center of circle; Three groups of L-type holes all have Single port to be located on still fitting surface, and another port is located on still periphery wall, and three ports on still fitting surface are linearly arranged, and wherein one group of port is positioned at still central position, and another two groups of port distribution are in both sides.
Further design of the present utility model is:
The L-type hole that port is positioned at still central position is that port is positioned at the L-type hole of both sides, still central position respectively as entrance and exit as pump interface.
Circular groove length is at least semicircle, and be positioned at moving plate center through the radial groove one end in the center of circle, the other end is connected with the middle part of circular groove.
Rotating ring top is set with moving plate seat, is pressed on by moving plate on still, and moving plate top and moving plate platform are located by connecting, and moving plate platform is connected with motor output shaft simultaneously.
Moving plate top is provided with boss, and moving plate cover for seat is contained on this boss, and is provided with groove in the middle part of this boss, is provided with valve rod bottom moving plate platform, and this valve rod is inserted in boss central slot, and is located by connecting by locating stud.
Described motor adopts stepper motor.
the utility model tool has the following advantages:
1, the utility model simple structure, easy to process, not high to material requirements, easily improves machining accuracy.
2, because the volume of the circular groove on moving plate is certain, and the rotating speed of stepper motor can control, and therefore this one-way valve can realize quantitative sample injection, can carry out fixing quantity for operator.
3, moving plate is directly connected by an axle with stepper motor, makes the conformity of moving plate and stepper motor high, and in quantitative sample injection, a this axle connection can be avoided producing sample introduction error in the axle or gear transmission of complexity, effectively improves precision.
4, the utility model does not change in the sense of rotation of whole sample introduction, emptying process stepper motor, and avoiding conventional rotary one-way valve needs to switch rotation clockwise, counterclockwise, and the wear phenomenon of the axle caused and locating stud.
accompanying drawing illustrates:
Fig. 1 is the structural representation of the utility model threeway rotary check valve.
Fig. 2 is the sectional view of the utility model spool part.
Fig. 3 is the plane view of moving plate in the utility model.
Fig. 4 is the plane view of stator in the utility model.
In figure: 1-exports; 2-pump interface; 3-entrance; 4-pump; 5-stepper motor; 6-stator; 7-moving plate assembly parts; 71-moving plate; 72-moving plate seat; 73-moving plate platform; 8-is dynamic, stator rubbing surface; 9-circular groove; 10-radial groove.
embodiment:
Below in conjunction with accompanying drawing, the utility model will be further described:
embodiment one:
As shown in Figure 1 and Figure 2, threeway rotary check valve of the present utility model comprises moving plate, still and stepper motor, moving plate lower surface contacts with still upper surface and coordinates, moving plate top and stepper motor are in transmission connection, moving plate fitting surface is provided with E type groove, match with it, still fitting surface is provided with three groups of L-type holes.
As shown in Figure 3, on moving plate, E type groove is formed by connecting by circular groove with through the radial groove in the center of circle.Circular groove length is the distance that semicircle adds the circular radius of undercut of two machining tools.Be positioned at moving plate center through the radial groove one end in the center of circle, the other end is connected with the middle part of circular groove.Three ends of E type are located along the same line.
As shown in Figure 4, three groups of L-type holes all have Single port to be located on still fitting surface, another port is located on still periphery wall, three ports on still fitting surface are linearly arranged, wherein one group of port is positioned at still central position, another two groups of port distribution are in both sides, and namely two groups of ports are circumferentially distributed on still fitting surface in 180 °.
Port be two L-type holes of 180 ° of distributions respectively as entrance and exit, the L-type hole that port is positioned at still central position is for as pump interface.Three holes on stator are specifically as follows the entrance of water sample/reagent, the outlet of water sample/reagent and pump interface.
embodiment two:
On the basis of embodiment one, the structure of moving plate and stepper motor attachment portion is as follows: moving plate seat, moving plate platform and moving plate together form moving plate assembly parts.Moving plate top is provided with boss, and moving plate cover for seat is contained on this boss, and is provided with groove in the middle part of this boss, is provided with valve rod bottom moving plate platform, and this valve rod is inserted in boss central slot, and is located by connecting by locating stud.Moving plate platform one end connects stepper motor, and the other end is connected to moving plate by valve rod and locating stud, and moving plate is rotated along with stepper motor is lasting.
Working principle of the present utility model is as follows:
When valve work, c and entrance 3, according to rotating clockwise, overlap by moving plate, and the moment that a and outlet 1 overlap thinks position 1, and when moving plate turns over position 1, vibrating armature pump is outwards taken out, and water sample/reagent is just drawn into one-way valve from entrance 3; A and entrance 3 are overlapped, think position 2 when c and outlet 1 overlap, when moving plate turns to position 2, entrance and exit is connected, and vibrating armature pump outwards pumps to inner extruding, and the water sample/reagent being before drawn into one-way valve starts emptying; When moving plate turns over position 2, entrance is cut off, and one-way valve enters evacuation procedure, and the water sample/liquid before in suction one-way valve is emptying to outlet.Deng when moving plate turns to position 1 again, again start by entrance sample introduction, back and forth complete thus and sample/get reagent process emptying again.
Claims (6)
1. a threeway rotary check valve, comprise moving plate, still and motor, moving plate contacts with still and coordinates, moving plate top is connected with motor-driven, it is characterized in that: moving plate fitting surface is provided with E type groove, match with it, still fitting surface is provided with three groups of L-type holes, and described E type groove is formed by connecting by circular groove with through the radial groove in the center of circle; Three groups of L-type holes all have Single port to be located on still fitting surface, and another port is located on still periphery wall, and three ports on still fitting surface are linearly arranged, and wherein one group of port is positioned at still central position, and another two groups of port distribution are in both sides.
2. threeway rotary check valve according to claim 1, is characterized in that: the L-type hole that port is positioned at still central position is for as pump interface, and port is positioned at the L-type hole of both sides, still central position respectively as entrance and exit.
3. threeway rotary check valve according to claim 1, it is characterized in that: circular groove length is at least semicircle, be positioned at moving plate center through the radial groove one end in the center of circle, the other end is connected with the middle part of circular groove.
4. threeway rotary check valve according to claim 1,2 or 3, is characterized in that: rotating ring top is set with moving plate seat, and moving plate top and moving plate platform are located by connecting, and moving plate platform is connected with motor output shaft simultaneously.
5. threeway rotary check valve according to claim 4, it is characterized in that: moving plate top is provided with boss, moving plate cover for seat is contained on this boss, and be provided with groove in the middle part of this boss, be provided with valve rod bottom moving plate platform, this valve rod is inserted in boss central slot, and is located by connecting by locating stud.
6. threeway rotary check valve according to claim 1, is characterized in that: described motor adopts stepper motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520972281.7U CN205173565U (en) | 2015-11-30 | 2015-11-30 | Rotatory check valve of tee bend |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520972281.7U CN205173565U (en) | 2015-11-30 | 2015-11-30 | Rotatory check valve of tee bend |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205173565U true CN205173565U (en) | 2016-04-20 |
Family
ID=55737559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520972281.7U Active CN205173565U (en) | 2015-11-30 | 2015-11-30 | Rotatory check valve of tee bend |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205173565U (en) |
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2015
- 2015-11-30 CN CN201520972281.7U patent/CN205173565U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |