阅读说明：本技术 一种高精度微控计量泵 (High-precision micro-control metering pump ) 是由 胡晓林 付艳 李凤来 张海林 于 2019-11-14 设计创作，主要内容包括：一种高精度微控计量泵,包括电机、上调节支架、下调节支架、关节轴承座、关节轴承及柱塞杆,其中下调节支架固装在电机顶部,下调节支架的一侧与上调节支架铰装连接,且下调节支架的另一侧通过螺杆与上调节支架偏角可调连接；关节轴承座的底部与电机的输出轴同轴固接；上调节支架中部活动并穿透安装有柱塞杆；柱塞杆底部径向固装有导杆,该导杆上活动套装有随关节轴承座周向转动的关节轴承。该计量泵将机械碰撞传动改进为机械摩擦传动,避免了计量泵运行过程中的内部传动构建碰撞问题,有效降低了泵体震动量,且单位时间内的流量可由机械结构控制,无需复杂的电路控制,降低了电机的使用要求,且流量精度高,运行振动小。(A high-precision micro-control metering pump comprises a motor, an upper adjusting support, a lower adjusting support, a joint bearing seat, a joint bearing and a plunger rod, wherein the lower adjusting support is fixedly arranged at the top of the motor, one side of the lower adjusting support is hinged with the upper adjusting support, and the other side of the lower adjusting support is adjustably connected with the upper adjusting support through a screw rod; the bottom of the joint bearing seat is coaxially and fixedly connected with an output shaft of the motor; the middle part of the upper adjusting bracket is movably and penetratingly provided with a plunger rod; the bottom of the plunger rod is radially and fixedly provided with a guide rod, and the guide rod is movably sleeved with a joint bearing which rotates along with the circumferential direction of the joint bearing seat. This measuring pump improves mechanical collision transmission into mechanical friction transmission, has avoided the inside transmission of measuring pump operation in-process to establish the collision problem, has effectively reduced the pump body vibrations volume, and the flow in the unit interval can be controlled by mechanical structure, need not complicated circuit control, has reduced the operation requirement of motor, and the flow precision is high, and the operation vibration is little.)

1. The utility model provides a high accuracy micro-control measuring pump, includes the motor, its characterized in that: the device also comprises a transmission unit and a liquid pumping and discharging execution unit, wherein the bottom of the transmission unit is connected with a motor, and the top of the transmission unit is connected with the liquid pumping and discharging execution unit; the transmission unit comprises an upper adjusting bracket, a lower adjusting bracket, a joint bearing seat, a joint bearing and a plunger rod, wherein the lower adjusting bracket is fixedly arranged at the top of the motor, one side of the lower adjusting bracket is hinged with the upper adjusting bracket, and the other side of the lower adjusting bracket is adjustably connected with the upper adjusting bracket through a screw rod; the joint bearing block rotates in the lower adjusting bracket, and the bottom of the joint bearing block is coaxially and fixedly connected with an output shaft of the motor; the top of the upper adjusting bracket is fixedly provided with a pumping and discharging execution unit, and the middle part of the upper adjusting bracket moves and penetrates through a plunger rod provided with the pumping and discharging execution unit; and a guide rod is fixedly arranged at the bottom of the plunger rod in the radial direction, and a joint bearing which rotates along with the circumferential direction of the joint bearing seat is movably sleeved on the guide rod.

2. The high-precision micro-control metering pump according to claim 1, characterized in that: the pumping and discharging execution unit further comprises a pump shell and a plunger cylinder, wherein the pump shell is coaxially and fixedly arranged at the top of the upper adjusting bracket, the plunger cylinder is axially and fixedly arranged in the pump shell, and a liquid inlet pipe and a liquid outlet pipe which are communicated with the interior of the plunger cylinder are arranged on the pump shell; the top of the plunger rod is provided with a plunger plane which enables the plunger cylinder to regulate and communicate the liquid inlet pipe and the liquid outlet pipe; and a sealing ring is hermetically sleeved on the plunger rod at the joint of the plunger cylinder and the upper adjusting support.

3. The high-precision micro-control metering pump according to claim 1, characterized in that: the outer walls of the upper adjusting bracket and the lower adjusting bracket are uniformly provided with connecting lugs, and threaded connecting shafts are rotatably arranged in the connecting lugs along the horizontal direction; the threaded connecting shaft is provided with a threaded hole which is through in the radial direction, and a screw rod for adjusting the connection deflection angle of the upper adjusting bracket and the lower adjusting bracket penetrates through the threaded hole and is in threaded connection with the threaded hole.

4. The high-precision micro-control metering pump according to claim 1, characterized in that: and a bearing hole is formed in the side wall of the joint bearing seat, and a joint bearing is installed in the bearing hole in a rotating fit mode.

5. The high-precision micro-control metering pump according to claim 1, characterized in that: and a light couple counting sheet is fixedly sleeved on an output shaft in the lower adjusting bracket.

Technical Field

The invention relates to the technical field of metering equipment, in particular to a metering pump, and particularly relates to a high-precision micro-control metering pump.

Background

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a high-precision micro-control metering pump, which improves mechanical collision transmission into mechanical friction transmission, avoids the problem of internal transmission construction collision in the operation process of the metering pump, effectively reduces the vibration quantity of a pump body, can control the flow in unit time by a mechanical structure, does not need complex circuit control, reduces the use requirement of a motor, and has high flow precision and small operation vibration.

A high-precision micro-control metering pump comprises a motor, a transmission unit and a liquid pumping and discharging execution unit, wherein the bottom of the transmission unit is connected with the motor, and the top of the transmission unit is connected with the liquid pumping and discharging execution unit; the transmission unit comprises an upper adjusting bracket, a lower adjusting bracket, a joint bearing seat, a joint bearing and a plunger rod, wherein the lower adjusting bracket is fixedly arranged at the top of the motor, one side of the lower adjusting bracket is hinged with the upper adjusting bracket, and the other side of the lower adjusting bracket is adjustably connected with the upper adjusting bracket through a screw rod; the joint bearing seat rotates in the lower adjusting bracket, and the bottom of the joint bearing seat is coaxially and fixedly connected with an output shaft of the motor; the top of the upper adjusting bracket is fixedly provided with a pumping and discharging execution unit, and the middle part of the upper adjusting bracket moves and penetrates through a plunger rod provided with the pumping and discharging execution unit; the bottom of the plunger rod is radially and fixedly provided with a guide rod, and the guide rod is movably sleeved with a joint bearing which rotates along with the circumferential direction of the joint bearing seat.

The pumping and discharging execution unit further comprises a pump shell and a plunger cylinder, wherein the pump shell is coaxially and fixedly arranged at the top of the upper adjusting bracket, the plunger cylinder is axially and fixedly arranged in the pump shell, and a liquid inlet pipe and a liquid outlet pipe which are communicated with the interior of the plunger cylinder are arranged on the pump shell; the top of the plunger rod is provided with a plunger plane which enables the plunger cylinder to regulate and communicate the liquid inlet pipe and the liquid outlet pipe; and a sealing ring is hermetically sleeved on the plunger rod at the joint of the plunger cylinder and the upper adjusting bracket.

Moreover, the outer walls of the upper adjusting bracket and the lower adjusting bracket are uniformly provided with connecting lugs, and threaded connecting shafts are rotatably arranged in the connecting lugs along the horizontal direction; the threaded connecting shaft is provided with a threaded hole which is radially communicated, and the threaded hole penetrates through and is in threaded connection with a screw for adjusting the connection deflection angle of the upper adjusting bracket and the lower adjusting bracket.

And the side wall of the joint bearing seat is provided with a bearing hole, and the joint bearing is installed in the bearing hole in a rotating fit mode.

And a light couple counting sheet is fixedly sleeved on an output shaft in the lower adjusting bracket.

The invention has the advantages and technical effects that:

the high-precision micro-control metering pump disclosed by the invention has the advantages that the motor drives the joint bearing seat to rotate, and power is provided for the piston motion and the rotating motion of the plunger rod through the joint bearing and the guide rod; the connection deflection angle adjustment of the upper adjusting bracket and the lower adjusting bracket is realized through the connection positions of the adjusting screw rod, the upper adjusting bracket and the lower adjusting bracket, and further the controllable mechanical adjustment of the motion amplitude of the piston of the plunger rod is realized; through the rotation movement of the plunger rod, the plunger plane at the top of the plunger rod is circularly communicated with the liquid inlet pipe and the liquid outlet pipe; the increase and decrease of the volume in the plunger cylinder are controlled by the movement of the piston of the plunger rod, and the liquid pumping and discharging functions are realized by the negative pressure of the plunger cylinder; and finally, recording the number of rotation turns of the output shaft of the motor by the optical coupling counting sheet, and sealing fluid in the plunger cylinder by the sealing ring to prevent the fluid from leaking into the joint bearing seat.

The high-precision micro-control metering pump solves the problem of mechanical collision and vibration in the metering pump, adopts the transmission structure of the joint bearing seat and the joint bearing to provide power for the rotation of the plunger rod and the movement of the piston, can control the liquid suction and discharge amount of the plunger cylinder by the screw, has simple structure, no collision transmission and low cost, and is a high-creative high-precision micro-control metering pump.

Drawings

FIG. 1 is a schematic structural view (half-sectional view) of the present invention;

FIG. 2 is a side view of FIG. 1 (semi-sectional view, liquid-absorbing state);

FIG. 3 is a side view of FIG. 1 (semi-sectional view, liquid discharge state);

in the figure: 1-pump housing; 2-plunger cylinder; 3-a plunger rod; 4-sealing ring; 5-a screw; 6-connecting lugs; 7-a threaded connection shaft; 8-a threaded hole; 9-joint bearing seat; 10-knuckle bearing; 11-an output shaft; 12-a photo-couple counting sheet; 13-lower adjustment bracket; 14-upper adjustment bracket; 15-liquid inlet pipe; 16-plunger plane; 17-a liquid outlet pipe; 18-a bearing bore; 20-a guide rod;

Detailed Description

For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are to be considered in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.

A high-precision micro-control metering pump comprises a motor, a transmission unit and a liquid pumping and discharging execution unit, wherein the bottom of the transmission unit is connected with the motor, and the top of the transmission unit is connected with the liquid pumping and discharging execution unit; the transmission unit comprises an upper adjusting bracket 14, a lower adjusting bracket 13, a joint bearing seat 9, a joint bearing 10 and a plunger rod 3, wherein the lower adjusting bracket is fixedly arranged at the top of the motor, one side of the lower adjusting bracket is hinged with the upper adjusting bracket, and the other side of the lower adjusting bracket is adjustably connected with the upper adjusting bracket through a screw 5; the joint bearing seat rotates in the lower adjusting bracket, and the bottom of the joint bearing seat is coaxially and fixedly connected with an output shaft 11 of the motor; the top of the upper adjusting bracket is fixedly provided with a pumping and discharging execution unit, and the middle part of the upper adjusting bracket moves and penetrates through a plunger rod provided with the pumping and discharging execution unit; the bottom of the plunger rod is radially and fixedly provided with a guide rod 20, and the guide rod is movably sleeved with a joint bearing which rotates along with the circumferential direction of the joint bearing seat.

The pumping and discharging execution unit further comprises a pump shell 1 and a plunger cylinder 2, wherein the pump shell is coaxially and fixedly arranged at the top of the upper adjusting bracket, the plunger cylinder is axially and fixedly arranged in the pump shell, and a liquid inlet pipe 15 and a liquid outlet pipe 17 which are communicated with the interior of the plunger cylinder are arranged on the pump shell; the top of the plunger rod is provided with a plunger plane 16 which enables the plunger cylinder to regulate and communicate the liquid inlet pipe and the liquid outlet pipe; a sealing ring 4 is hermetically sleeved on the plunger rod at the joint of the plunger cylinder and the upper adjusting bracket.

Moreover, the outer walls of the upper adjusting bracket and the lower adjusting bracket are uniformly provided with connecting lugs 6, and threaded connecting shafts 7 are rotatably arranged in the connecting lugs along the horizontal direction; the threaded connecting shaft is provided with a threaded hole 8 which is through in the radial direction, and the threaded hole penetrates through and is in threaded connection with a screw rod for adjusting the connection deflection angle of the upper adjusting bracket and the lower adjusting bracket.

Moreover, the side wall of the joint bearing seat is provided with a bearing hole 18, and the joint bearing is installed in the bearing hole in a rotating fit mode.

And, a light couple counting sheet 12 is fixedly sleeved on an output shaft in the lower adjusting bracket.

In addition, the optimal selection of the invention is that the motor, the sealing ring and the optical couple counting sheet are all mature products in the prior art.

In order to more clearly describe the specific embodiments of the present invention, an example is provided below:

when the high-precision micro-control metering pump is used, a motor is started to drive an output shaft to rotate, a photo-couple counting disc on the output shaft counts (the counting mode adopts a mature means in the prior art), the output shaft drives a joint bearing seat to coaxially rotate, the joint bearing seat drives a joint bearing on the side wall of the joint bearing seat to synchronously and circumferentially rotate by taking the output shaft as a circle center, the joint bearing applies circumferential rotating force to a plunger rod through a guide rod at the moment, and the circumferential rotation of the joint bearing also provides power for the plunger rod to move due to the fact that a certain connecting deflection angle exists between an upper adjusting support and a lower adjusting support, namely, in the process of one-circle rotation of the joint bearing, a plunger plane on the top of the plunger rod completes one cycle.

In addition, the metering pump of the present invention has produced a real object, and table 1 and table 2 show the precision experimental parameters of two randomly selected metering pumps.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

TABLE 1 measuring Pump accuracy test 1

Metering pump precision experiment (1) interface with liquid transfer device

Rated speed: 300n/min metering pump number:

date: 2019.3.13

TABLE 2 precision experiment of metering pump 2

Metering pump precision experiment (2) interface with liquid transfer device

Rated speed: 300n/min metering pump number:date: 2019.3.13

Remarking: the metering pump stops counting for 2 seconds, and starts the metering pump after reading for 1 second.