阅读说明：本技术 定量注液机 (Quantitative liquid injection machine ) 是由 梁彤明 于 2019-11-06 设计创作，主要内容包括：本发明公开了一种可以定量供给液体、固液双向混合物、膏状物料的设备,其特征在于：步进电机固定在电机固定支架上,步进电机直接驱动丝杆左右旋转。电机固定支架侧方有丝杆定位导向槽,丝杆导向件在槽内做往复运动。丝母与活塞杆连接,活塞杆为空心结构,丝杆置于活塞杆中孔内。活塞与活塞杆连接,活塞上装有耐磨环和油封。活塞与缸筒配合做轴向往复运动,缸筒总成上方有排气孔。缸筒用于储液、排液。缸筒总成下方有进出液螺纹孔,三通接在螺纹孔上,一通接止回阀,用于供液入口,另一通接截止阀,用于出液。该装置实用性强,设计简单,可利用在各种小型涉及到罐装类的设备上。(The invention discloses a device capable of quantitatively supplying liquid, solid-liquid bidirectional mixture and pasty material, which is characterized in that: the stepping motor is fixed on the motor fixing support and directly drives the screw rod to rotate left and right. The side of the motor fixing bracket is provided with a screw rod positioning guide groove, and a screw rod guide piece reciprocates in the groove. The screw nut is connected with the piston rod, the piston rod is of a hollow structure, and the screw rod is arranged in the middle hole of the piston rod. The piston is connected with the piston rod, and the piston is provided with a wear-resisting ring and an oil seal. The piston and the cylinder barrel are matched to do axial reciprocating motion, and an exhaust hole is formed above the cylinder barrel assembly. The cylinder barrel is used for storing and discharging liquid. A liquid inlet and outlet threaded hole is formed in the lower portion of the cylinder barrel assembly, the tee joint is connected to the threaded hole, one end of the check valve is connected with the liquid supply inlet, and the other end of the check valve is connected with the stop valve and used for discharging liquid. The device practicality is strong, and the design is simple, and the usable is on various small-size equipment that involves the canning class.)

1. An equipment capable of quantitatively supplying liquid, solid-liquid mixture and pulp material comprises a stepping motor, a motor fixing support, a lead screw, a screw nut, a piston rod, a cylinder barrel assembly, a piston, an oil seal, a wear-resisting ring, a lead screw guide piece, a tee joint, a check valve and a stop valve.

2. An apparatus for dosing liquids, solid-liquid mixtures, pulp-like materials according to claim 1, characterised in that the stepping motor is directly connected to the screw.

3. The apparatus according to claim 1, wherein the stepping motor is fixed on a motor fixing bracket, and a screw rod positioning guide groove is formed on a side of the motor fixing bracket.

4. The apparatus for quantitatively supplying liquid, solid-liquid mixture, and pulp-like material according to claim 1, wherein the nut is connected to a piston rod, and the piston rod has a hollow structure.

5. An apparatus for dosing liquids, solid-liquid mixtures, slurries according to claim 1, wherein the piston is connected to a piston rod, which is provided with a wear ring and an oil seal.

6. An apparatus for quantitatively supplying liquid, solid-liquid mixture, or pulp material as claimed in claim 1, wherein the piston is axially movable in cooperation with the cylinder, and the cylinder assembly has vent holes above it.

7. The apparatus as claimed in claim 1, wherein the cylinder assembly has a threaded hole for liquid inlet and outlet, a tee connected to the threaded hole, a check valve connected to the liquid inlet, and a stop valve connected to the other hole for liquid outlet.

The technical field is as follows:

the invention relates to equipment with similar functions to a metering pump, in particular to the field of quantitative supply of liquid, solid-liquid bidirectional mixture and paste materials.

Background art:

in the field of quantitative liquid supply, a plurality of metering pumps can realize the function of quantitative supply, such as a diaphragm pump, a plunger pump and the like, and the working principle is as follows: the motor drives the worm through the coupling and reduces the speed through the worm wheel to make the main shaft and the eccentric wheel rotate, and the eccentric wheel drives the sliding adjusting seat of the bow-shaped connecting rod to reciprocate. When the plunger moves towards the rear dead center, vacuum is gradually formed in the pump cavity, the suction valve is opened, and liquid is sucked; when the plunger moves towards the front dead center, the suction valve is closed, the discharge valve is opened, the liquid is discharged when the plunger moves further, and the pump works in a reciprocating way to form continuous pressure and quantitative liquid discharge. The principle of flow regulation is as follows: the flow regulation of the pump is realized by rotating a regulating hand wheel to drive a regulating screw rod to rotate, so that the distance between the arch-shaped connecting rods is changed, the moving stroke of a plunger (piston) in a pump cavity is changed to determine the flow, the stroke of the plunger is determined by the scale of the regulating hand wheel, and the accuracy is 95%. However, this configuration is not suitable for high frequency small dose delivery. Then on the basis of the working principle of plunger pump, a quantitative canning mechanism is derived, the cylinder barrel is enlarged, the stroke of piston is lengthened, the cylinder is used for driving piston to make reciprocating motion, every time the piston makes reciprocating motion, the liquid whose volume is equal to that of cylinder barrel can be poured out, and the liquid discharge quantity can be controlled by using the method of controlling stroke of cylinder with hand wheel. The structure is suitable for high-frequency small-dose supply, but the structure can be used only by matching with an air source, and in addition, the adjustment precision of each time needs to be manually mastered by a method for manually adjusting the stroke of the air cylinder, so that the accuracy is difficult to master the consistency of each time of supply. And at the same time, the adjustment time is lengthened.

With the development of the times and the progress of science and technology, people tend to be more and more automatic to the operation machine, and the adaptation of the machine to various working conditions is more and more diversified.

The invention content is as follows:

the invention provides a quantitative supply device which is suitable for quantitatively supplying liquid, solid-liquid bidirectional mixture and paste materials.

The technical scheme of the invention is as follows: the stepping motor drives the screw rod to rotate left and right. The screw nut is connected with the piston rod, the piston rod is of a hollow structure, and the screw rod is arranged in the middle hole of the piston rod. The piston is connected with the piston rod, the piston is provided with a wear-resisting ring and an oil seal, and the piston is matched with the cylinder barrel to do axial reciprocating motion. When the piston moves upwards, the piston sucks in the materials, when the piston moves downwards, the materials are sent out, and the material inlet and outlet are provided with valves for controlling the materials to enter and exit.

Description of the drawings:

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is an isometric illustration of the present invention;

in the figure: the device comprises a stepping motor 1, a motor fixing support 2, a screw 3, a piston rod 4, a cylinder barrel assembly 5, a piston 6, an oil seal 7, a tee joint 8, a check valve 9, a stop valve 10, a wear-resistant ring 11, an exhaust hole 12, a lead screw guide 13, a lead screw 14 and a lead screw positioning guide groove 15.

The specific implementation mode is as follows:

the technical scheme of the invention is as follows: the stepping motor 1 is fixed on the motor fixing support 2, and the stepping motor 1 directly drives the screw rod 14 to rotate left and right. A screw positioning guide groove 15 is formed in the side of the motor fixing support 2, and a screw guide piece 13 reciprocates along with the screw nut 3 in the screw positioning guide groove 15. The screw nut 3 is connected with the piston rod 4, the piston rod 4 is of a hollow structure, and the screw 14 is arranged in a middle hole of the piston rod 4. The piston 6 is connected with the piston rod 4, and the piston 6 is provided with a wear-resisting ring 11 and an oil seal 7. The piston 6 is matched with a cylinder barrel of the cylinder barrel assembly 5 to do axial reciprocating motion, and an exhaust hole 12 is arranged above the cylinder barrel assembly 5. The cylinder barrel is used for storing and discharging liquid. A liquid inlet and outlet threaded hole is formed in the lower portion of the cylinder barrel assembly 5, the tee joint 8 is connected to the threaded hole, an interface of the lowest lower portion of the tee joint is connected with the check valve 9 and serves as a material inlet, and an interface of the upper portion of the tee joint is connected with the stop valve 10 and serves as a material outlet. When the piston 6 moves upwards, the stop valve 10 is closed, the check valve 9 is opened, the material is sucked into the cylinder barrel, when the piston 6 moves downwards, the stop valve 10 is opened, the check valve 9 is closed, and the material is extruded out of the cylinder barrel. The up-down stroke of the piston 6 is accurately controlled by the stepping motor 1, so that the volume of the sucked and extruded materials can be accurately controlled.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.