CN209925184U

CN209925184U - Stroke adjusting display for metering pump

Info

Publication number: CN209925184U
Application number: CN201920663935.6U
Authority: CN
Inventors: 许赫; 尚玉泉
Original assignee: Beijing Fangzhou Tongda Mechanical And Electrical Technology Co Ltd
Current assignee: Beijing Fangzhou Tongda Mechanical And Electrical Technology Co Ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-01-10
Anticipated expiration: 2029-05-09

Abstract

The utility model provides a display is adjusted to measuring pump stroke relates to measuring pump technical field, has solved the technical problem that needs that adjustment handle scale mark brought are estimated and are read or the scale mark of seeing the mistake. The device comprises a box body and a fixed threaded sleeve fixedly connected with a metering pump shell, wherein the box body is arranged on the metering pump shell and is positioned through the fixed threaded sleeve, a stroke adjusting rod is connected in the fixed threaded sleeve and extends into the box body, a rotating shaft, a rotary encoder and a PCB are arranged in the box body, and a display panel and a battery are arranged outside the box body; the utility model discloses a rotary encoder links the angle that rotary motion is rotatory with stroke length's change, and the processing back of rethread singlechip can directly read out current stroke length's percentage on display panel.

Description

Stroke adjusting display for metering pump

Technical Field

The utility model relates to a measuring pump technical field especially relates to a display is adjusted to measuring pump stroke.

Background

The metering pump is also called a quantitative pump or a proportional pump, belongs to a reciprocating displacement pump, and is generally divided into a driving part, an adjusting part, a mechanical transmission part and a liquid passing part. The mechanical transmission part can convert the rotary motion of the motor into linear motion, so that the ejector rod driving the diaphragm moves back and forth in a reciprocating mode, the diaphragm reciprocates to achieve the function of the metering pump, and the function is achieved through an eccentric ejector rod or a crank oscillating bar generally.

The eccentric ejector rod is not fixed with the top cover, so that the stroke is changed by changing the position of the end point of the ejector rod, and the lower dead center reached by the ejector rod can be changed by connecting a stroke adjusting rod with a rotating shaft, so that the volume change of the cavity of the metering pump is changed, and the displacement is changed.

The method needs a user to know the adjustment amount clearly, so that the prior art generally adopts an adjusting handle with scales, but the user is not intuitive in use, inconvenient in reading and easy to make mistakes.

To this end, we propose a metering pump stroke length adjustment display that is easy to observe.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming this kind of traditional measuring pump adjustment mechanism, cause the reading difficulty and use inconvenient defect to the user, the utility model provides a metering pump stroke length adjustment display to the direct indication current stroke has reduced the probability that the user misread, ensures that the use of measuring pump is more directly perceived, more convenient.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a stroke adjusting display of a metering pump comprises an angle conversion device connected with a rotating shaft, wherein the rotating shaft drives the angle conversion device to rotate when rotating, and the angle conversion device can convert the rotating angle of the rotating shaft into the length of a stroke adjusting rod moving back and forth and display the length on an electronic display device of the angle conversion device.

Preferably, the angle conversion device comprises a rotary encoder, a PCB, a battery and a display panel, wherein the rotary encoder is connected with the PCB, the PCB is connected with the display panel, and the battery supplies power to the PCB.

Preferably, the PCB is integrated with an amplifying circuit, a shaping circuit, a first filter circuit, a second filter circuit, a power converter and a single chip microcomputer, the rotary encoder is connected with the amplifying circuit, the amplifying circuit is connected with the shaping circuit, the shaping circuit is connected with the first filter circuit, the first filter circuit is connected with the single chip microcomputer, the single chip microcomputer is connected with the display panel, and the battery supplies power to the single chip microcomputer through the power converter and the second filter circuit.

Preferably, the rotary encoder rotates together with the rotating shaft, the rotating angle is transmitted to the single chip microcomputer in a pulse form through the amplifying circuit, the shaping circuit and the first filter circuit, and the single chip microcomputer reads the pulse, calculates a numerical value and transmits the numerical value to the display panel.

Preferably, the rotary encoder does not output pulse, the display panel is automatically powered off, and the rotary encoder outputs pulse, and the display panel is powered on again.

Preferably, the metering pump further comprises a box body and a fixed threaded sleeve fixedly connected with the metering pump shell, the box body is installed on the metering pump shell and is positioned through the fixed threaded sleeve, and a stroke adjusting rod is connected in the fixed threaded sleeve and extends into the box body.

Preferably, the stroke adjusting rod is connected with the rotating shaft, an adjusting handle is arranged at one end, far away from the stroke adjusting rod, of the rotating shaft, and a dial is arranged on the inner side of the adjusting handle.

Preferably, a positioning pin penetrates through one end, far away from the metering pump shell, of the stroke adjusting rod, and one end, close to the stroke adjusting rod, of the rotating shaft is hollow and provided with a guide groove.

Preferably, the stroke adjusting rod is detachably connected with the rotating shaft through a positioning pin and a guide groove, and the positioning pin can move in the guide groove.

Preferably, the stroke adjusting rod is in threaded connection with the inner end of the fixed threaded sleeve.

Compared with the prior art, the utility model has the advantages that:

the utility model provides a metering pump stroke length adjustment display links the rotatory angle of rotary motion with stroke length's change through angle conversion equipment, can directly read out current stroke length's percentage on electronic display device to the needs of having avoided the scale mark to bring are estimated and are read or the defect of misreading the scale mark.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a stroke adjustment display for a metering pump according to an embodiment of the present invention;

fig. 2 is a circuit diagram of a measuring pump stroke adjustment display according to an embodiment of the present invention.

In the figure: 1. fixing the threaded sleeve; 2. a stroke adjusting rod; 3. a box body; 4. a dial scale; 5. an adjusting handle; 6. positioning pins; 7. a rotating shaft; 8. a rotary encoder; 9. a PCB board; 901. an amplifying circuit; 902. a shaping circuit; 903. a first filter circuit; 904. a power converter; 905. a second filter circuit; 906. a single chip microcomputer; 10. a display panel; 11. a battery.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples

Referring to fig. 1, a stroke adjustment display for a metering pump includes a box body 3 and a fixed threaded sleeve 1 fixedly connected with a housing of the metering pump, the box body 3 is installed on the housing of the metering pump and is positioned by the fixed threaded sleeve 1, a stroke adjustment rod 2 is connected in the fixed threaded sleeve 1 and extends into the box body 3, and the stroke adjustment rod 2 is in threaded connection with an inner end of the fixed threaded sleeve 1.

The inside rotation axis 7 that is equipped with of box 3, rotary encoder 8 and PCB board 9, rotation axis 7 is connected with stroke adjusting rod 2, positioning pin 6 has been worn to the one end that metering pump shell was kept away from to stroke adjusting rod 2, the one end that rotation axis 7 is close to stroke adjusting rod 2 is hollow, and be equipped with the guide way, stroke adjusting rod 2 passes through positioning pin 6 with rotation axis 7 and can dismantle with the guide way and be connected, positioning pin 6 can remove in the guide way.

The rotary encoder 8 is fixed on the rotary shaft 7, the PCB 9 is fixed in the box 3 through bolts, the rotary shaft 7 is connected with the rotary motion of the stroke adjusting rod 2 through the positioning pin 6, meanwhile, the positioning pin 6 can freely move through the guide groove in the rotary shaft 7, when the rotary encoder rotates, although the stroke adjusting rod 2 can move, the rotary shaft 7 can still be kept in a matching relation with the rotary encoder 8, and accurate display is guaranteed.

An adjusting handle 5 is arranged at one end of the rotating shaft 7, which is far away from the stroke adjusting rod 2, a dial 4 is arranged on the inner side of the adjusting handle 5, and the dial 4 is connected with the box body 3 to form a rear cover of the box body 3; the outside of box 3 is equipped with display panel 10 and battery 11, and rotary encoder 8 is connected with PCB board 9, and PCB board 9 is connected with display panel 10, and battery 11 is the power supply of PCB board 9, and box 3 passes through bolt and measuring pump shell fixed connection.

Referring to fig. 2, an amplifying circuit 901, a shaping circuit 902, a first filter circuit 903, a second filter circuit 905, a power converter 904 and a single chip microcomputer 906 are integrated on a PCB 9, a rotary encoder 8 is connected with the amplifying circuit 901, the amplifying circuit 901 is connected with the shaping circuit 902, the shaping circuit 902 is connected with the first filter circuit 903, the first filter circuit 903 is connected with the single chip microcomputer 906, the single chip microcomputer 906 is connected with a display panel 10, and a battery 11 supplies power to the single chip microcomputer 906 through the power converter 904 and the second filter circuit 905.

The battery 11 supplies power to the singlechip 906 through the power converter 904 and the second filter circuit 905, and when the rotary encoder 8 does not output pulses, the display panel 10 is not automatically powered off after working for a period of time; when the rotary encoder 8 outputs a pulse, the display panel 10 is re-lit to display the current stroke length percentage.

The utility model discloses a rotatory adjustment handle 5 directly can read out current stroke percentage on display panel 10, it is rotatory to drive rotation axis 7 when adjustment handle 5 is rotatory, because relatively fixed between rotary encoder 8 and the rotation axis 7, so rotary encoder 8 begins rotatory output pulse, rotation axis 7 drives the stroke control pole 2 rotation of having worn locating pin 6 simultaneously, the helical pitch screw motion of stroke control pole 2 in along fixed thread cover 1 this moment, clockwise rotation stroke control pole 2 will remove left, reduce stroke length, anticlockwise rotation stroke control pole 2 will remove right, increase stroke length.

The rotary encoder 8 can convert the rotation angle in the form of pulses, the converted pulses are transmitted to the single chip microcomputer 906 through the amplifying circuit 901, the shaping circuit 902 and the first filter circuit 903, the single chip microcomputer 906 performs increment or decrement calculation according to the current value through the identified signals, and then the numerical value is displayed on the display panel 10.

The utility model provides a measuring pump stroke adjustment display, through rotary encoder 8 with the rotatory angle of rotary motion and the change of stroke length link, rotary encoder 8 is the same with the rotatory angle of stroke adjusting lever 2, can turn into the pulse number with the change of stroke length to reach the purpose that shows stroke length; after the processing through singlechip 906 again, can directly read out the percentage of current stroke length on the panel, saved the awkwardness that needs that the scale mark brought were estimated and were read and the scale mark was seen by mistake, and need not to consider the power supply problem owing to use battery 11 power supply, the utility model discloses can furthest's extension stand-by time from taking the dormancy function.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above description is only for the specific implementation of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can change, modify, replace and modify the above embodiments within the technical scope of the present invention, and all such changes, modifications, substitutions and variations are intended to be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A stroke adjustment display for a metering pump is characterized in that: the angle conversion device is connected with a rotating shaft (7), the rotating shaft (7) drives the angle conversion device to rotate when rotating, and the angle conversion device can convert the rotating angle of the rotating shaft (7) into the length of the stroke adjusting rod (2) moving back and forth and display the length on an electronic display device of the angle conversion device.

2. The display of claim 1, wherein: the angle conversion device comprises a rotary encoder (8), a PCB (printed circuit board) board (9), a battery and a display panel (10), wherein the rotary encoder (8) is connected with the PCB board (9), the PCB board (9) is connected with the display panel (10), and the battery (11) supplies power to the PCB board (9).

3. The display of claim 2, wherein: the PCB (9) is integrated with an amplifying circuit (901), a shaping circuit (902), a first filter circuit (903), a second filter circuit (905), a power converter (904) and a single chip microcomputer (906), the rotary encoder (8) is connected with the amplifying circuit (901), the amplifying circuit (901) is connected with the shaping circuit (902), the shaping circuit (902) is connected with the first filter circuit (903), the first filter circuit (903) is connected with the single chip microcomputer (906), the single chip microcomputer (906) is connected with a display panel (10), and the battery (11) supplies power to the single chip microcomputer (906) through the power converter (904) and the second filter circuit (905).

4. The display of claim 3, wherein: the rotary encoder (8) rotates together with the rotating shaft (7), the rotating angle is transmitted to the single chip microcomputer (906) in a pulse mode through the amplifying circuit (901), the shaping circuit (902) and the first filter circuit (903), and the single chip microcomputer (906) reads pulses, calculates numerical values and transmits the numerical values to the display panel (10).

5. The display of claim 4, wherein: the rotary encoder (8) is automatically powered off without outputting the pulse display panel (10), and the rotary encoder (8) outputs the pulse display panel (10) to be powered on again.

6. The display according to any one of claims 1-5, wherein: still include box (3) and with measuring pump shell fixed connection's fixed thread cover (1), install on the measuring pump shell box (3), and pass through fixed thread cover (1) location, fixed thread cover (1) in-connection has stroke adjusting lever (2), and extends to in the box (3).

7. The display of claim 6, wherein: stroke regulation pole (2) are connected with the rotation axis, keep away from on rotation axis (7) the one end of stroke regulation pole (2) is equipped with adjustment handle (5), the inboard of adjustment handle (5) is equipped with calibrated scale (4).

8. The display of claim 7, wherein: the stroke adjusting rod (2) is far away from one end of the metering pump shell and is penetrated with a positioning pin (6), and one end of the rotating shaft (7) close to the stroke adjusting rod (2) is hollow and is provided with a guide groove.

9. The display of claim 8, wherein: the stroke adjusting rod (2) is detachably connected with the rotating shaft (7) through a positioning pin (6) and a guide groove, and the positioning pin (6) can move in the guide groove.

10. The display of claim 9, wherein: the stroke adjusting rod (2) is in threaded connection with the inner end of the fixed threaded sleeve (1).