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Metering pump

A technology of metering pump and piston rod, applied in the direction of pump, pump element, pump control, etc., can solve the problems of unfavorable miniaturization design, complex transmission mechanism, high manufacturing cost, and achieve convenient miniaturization design, high transmission efficiency, and manufacturing cost. low effect

Inactive Publication Date: 2021-10-15
TAIZHOU ZHITONG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing metering pumps mostly adopt the transmission method of worm gear and worm. The power is transmitted through the worm gear structure to drive the connecting rod mechanism. Low efficiency, large space occupation, complex transmission mechanism, high manufacturing cost, high energy consumption, and not conducive to miniaturization design, not suitable for use in situations where the available space is small or the cost budget is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In order to prevent the piston rod 5 from rotating during the movement, the sliding bearing 2 is coaxial with the through hole of the output flange 4, and the inner wall of the box body 1 is provided with two rows of guide bearings 6 up and down along the moving direction of the annular slider 51. , the annular slider 51 is located between the upper row and the lower row of guide bearings 6 . In order to ensure the smooth sliding of the annular slider, at least four guide bearings 6 on one side clamp the annular slider 51 when the annular slider 51 slides. That is, at least three guide bearings 6 are arranged in each horizontal row, and there are 12 guide bearings 6 in total.

[0041] In order to prevent the thread from getting loose when the guide bearing 6 reverses. The guide bearing 6 is screwed and firmly connected to the inner surface of the box body 1, and the screw joint is coated with anti-loose glue.

[0042] The threaded hole for assembling the guide bearing...

Embodiment 2

[0044] The sliding bearing 2 is not coaxial with the through hole of the output flange 4 . The annular slider 51 cannot rotate, and there is no need to add a guide bearing 6, which reduces the difficulty of processing and assembly.

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PUM

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Abstract

The invention relates to a metering pump. The metering pump comprises a piston rod driving device, wherein the piston rod driving device comprises a fixed box body, wherein an end flange is arranged at one end of the box body, a sliding bearing is arranged in the end flange, the other end of the box body is not closed, the end face of the end flange is fixedly connected with an output end flange, a piston rod is arranged between the sliding bearing and the output end flange, an annular sliding block is arranged in the middle of the piston rod, two racks which are oppositely arranged are arranged on the inner side of the annular sliding block in the length direction, cylindrical rods are arranged at the two ends of the annular sliding block, the cylindrical rod matched with the output end flange is an output end piston rod, and the cylindrical rod matched with the sliding bearing is a driven piston rod; and a piston rod driving mechanism is arranged in the middle of the box body in the vertical direction and comprises a motor fixing flange and a bearing flange which are arranged in the middle of the upper surface and the middle of the lower surface of the box body respectively. The metering pump is exquisite in design, high in transmission efficiency, low in energy consumption, reasonable in layout, small in occupied space, low in manufacturing cost and convenient for miniaturization design.

Description

[0001] This application is a divisional application of an invention patent application with a patent application date of September 11, 2019, a patent application number of 201910856049.X, and an invention title of "Metering Pump Piston Rod Driving Device". technical field [0002] The invention relates to the technical field of metering pump equipment, in particular to a metering pump with a piston rod driving device with a specific structure. Background technique [0003] Metering pumps are also called quantitative pumps or proportional pumps. The metering pump is a special positive displacement pump that can meet the needs of various strict technological processes, and the flow rate can be adjusted steplessly. It is used to transport liquids (especially corrosive liquids). The metering pump is a kind of fluid conveying machinery, and its outstanding feature is that it can maintain a constant flow regardless of the discharge pressure. The use of metering pumps can simultan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B17/03F04B13/00F04B53/14F04B49/20F16H19/04
CPCF04B17/03F04B13/00F04B53/144F04B49/20F16H19/043Y02P20/10
Inventor 陈英米罗祥耀
Owner TAIZHOU ZHITONG TECH CO LTD