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Adjustable-lift one-way valve used for micro reciprocating pump

A technology for one-way valves and reciprocating pumps, which is applied in the direction of control valves, valve devices, pump components, etc., can solve problems affecting the delivery accuracy of micro-volume reciprocating pumps, and achieve the effects of improving accuracy and covering the flow range, using simple methods, and high precision

Active Publication Date: 2017-04-19
HEFEI GENERAL MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the design process of ordinary micro-volume reciprocating pumps, the parameters of the check valve are all based on the rated flow rate. When the required flow rate is small during its use, due to its fixed relatively large lift, the ball of the check valve will The impact of return lag, relatively small flow rate can not be ignored, which seriously affects the delivery accuracy of micro-reciprocating pumps

Method used

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  • Adjustable-lift one-way valve used for micro reciprocating pump
  • Adjustable-lift one-way valve used for micro reciprocating pump
  • Adjustable-lift one-way valve used for micro reciprocating pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Depend on Figure 1-3 As shown, an adjustable lift one-way valve for a micro-volume reciprocating pump includes a one-way valve assembly and a lift adjustment assembly, the one-way valve assembly includes a valve core, and the lift adjustment assembly is used to control the lift of the valve core. stroke, and the lift adjustment assembly is provided with a scale 10 for quantitatively controlling the lift of the spool.

[0032] The valve core is a valve ball 20, and the one-way valve assembly also includes a valve seat 21, a valve body 22 and a valve sleeve 23; the valve seat 21 is arranged on the valve body 22; the valve sleeve 23 is arranged on the valve seat 21, and cooperate with the valve seat 21; the valve ball 20 is placed between the valve seat 21 and the valve sleeve 23.

[0033] The lift adjustment assembly includes an adjustment nut 11, an adjustment rod I12, a pressure rod 13 and a spring 14. The adjustment nut 11 is sleeved on the outside of the pressure ro...

Embodiment 2

[0038] Such as Figure 2-4 As shown, the valve core is a valve ball 20, the one-way valve assembly also includes a valve seat 21 and a valve body 22, the valve seat 21 is arranged on the valve body 22, and the valve ball 20 is placed on the valve seat 21 Above; the lift adjustment assembly includes an adjustment rod II17, the upper part of the adjustment rod II17 is arranged outside the valve body 22, and the lower part of the adjustment rod II17 is inserted into the valve body 22 to control the lift of the valve ball 20; the adjustment The rod II17 protruding from the outside of the valve body 22 is provided with a protrusion 18 that is convenient for turning the adjustment rod II17 to adjust the stroke; the adjustment rod II17 is provided with a through hole for the medium to flow through; the adjustment rod II17 and A sealing ring 15 is provided between the valve bodies 22 .

[0039] That is, the spring is canceled in this embodiment, and the adjusting nut 11, adjusting ro...

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Abstract

The invention discloses an adjustable-lift one-way valve used for a micro reciprocating pump, and relates to the field of micro reciprocating displacement pumps. The adjustable-lift one-way valve comprises a one-way valve assembly and a lift adjustment assembly. The one-way valve assembly comprises a valve element. The lift adjustment assembly is used for controlling the lift of the valve element. Scales used for quantitatively controlling the lift of the valve element are arranged on the lift adjustment assembly. According to the adjustable-lift one-way valve used for the micro reciprocating pump, the use method is simple, the lift of the one-way valve can be adjusted quantitatively and precisely through rotational adjustment of a nut and matching of the scales on a pressure lever and a reference line on a valve body, the lift of a valve ball of the one-way valve is precisely matched with the quantity of flow of the micro reciprocating pump, and accordingly, high-precision conveying of the micro reciprocating pump is achieved.

Description

technical field [0001] The invention relates to the field of micro-volume reciprocating volumetric pumps, in particular to an adjustable lift check valve for micro-volume reciprocating pumps. Background technique [0002] The one-way valve is a direct component of the working process of the reciprocating pump and an important factor affecting the delivery accuracy of the micro-volume reciprocating pump, and the lift of the one-way valve is one of its important parameters. The lift, ball diameter and other parameters of the check valve are directly related to the design flow rate of the micro reciprocating pump. When the flow rate of the reciprocating pump is large, the corresponding design parameters of the lift and ball diameter of the check valve are slightly larger, and vice versa. In the fields of chemical industry, medicine and chromatographic analysis, the required flow rate of reciprocating positive displacement pumps such as micro metering pumps and liquid phase pump...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/10F16K15/04F16K37/00
CPCF04B53/10F16K15/044F16K37/0016
Inventor 刘海山文宏刚张兴林丁强民温超王保权
Owner HEFEI GENERAL MACHINERY RES INST