CN211009975U

CN211009975U - Continuously adjustable damping valve

Info

Publication number: CN211009975U
Application number: CN201922006065.8U
Authority: CN
Inventors: 王文晶; 韩雪; 杜福新; 杨三东; 封娇; 唐涛; 李彤
Original assignee: Elite Suzhou Analytical Instrument Co ltd
Current assignee: Elite Suzhou Analytical Instrument Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-07-14
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses a continuously adjustable damping valve, including the valve body, its characterized in that: the valve body consists of an upper valve body (1) and a lower valve body (2) which are connected with each other, a plurality of bottom feet (3) are arranged on the bottom end surface of the lower valve body (2), a first slide rail (2) and a second slide rail (3) which are parallel to each other are arranged on the bottom plate (1) on the upper valve body (1), a micrometer (4) is arranged on the upper valve body (1), a micrometer screw (5) of the micrometer (4) is positioned in a through hole formed in the upper valve body (1), a PEEK pipeline (7) is fixedly arranged between the upper valve body (1) and the lower valve body (2) through a pair of connecting screws (6), the bottom end surface of the micrometer screw (5) is contacted with the outer wall of the PEEK pipeline (7), two ends of the PEEK pipeline (7) are respectively connected with a two-way pipe (8) without dead volume, and the two-way valve (8) is also positioned between the upper valve body (1) and the lower valve body (2).

Description

Continuously adjustable damping valve

Technical Field

The utility model relates to a damping valve, especially a continuously adjustable damping valve.

Background

In a liquid chromatography system analysis experiment, an infusion pump is required to deliver fluid at a constant flow rate in order to obtain stable, reproducible analytical results. For the design of reciprocating plunger pumps, the output flow of the infusion pump is constant only within a certain system pressure range. Damping valves are often provided in the lines.

The existing damping valves are in a fixed damping structure form, for example, a section of thin inner diameter long stainless steel pipe is coiled up to be used as a damping providing device, the damping size of the damping providing device is related to the inner diameter, the length and the flow, so that once the system needs different damping amounts, the damping valve with another different specification needs to be replaced, the operation is very complicated, the operation can be carried out after the system is stopped and drained, and the working efficiency is seriously influenced. There is therefore a need for a method or apparatus that addresses the above-mentioned problems.

Disclosure of Invention

The utility model relates to a solve the above-mentioned not enough that prior art exists, provide a simple structure, design benefit, can realize online adjustment under the prerequisite of not shutting down, not flowing back, and can carry out the damping valve of continuous adjustment.

The technical solution of the utility model is that: the utility model provides a continuously adjustable damping valve, includes the valve body, its characterized in that: the valve body constitute by interconnect's last valve body 1 and lower valve body 2, be provided with a plurality of footing 3 on the bottom face of valve body 2 down, upward be provided with micrometer 4 on the valve body 1, micrometer 4's micrometer screw 5 is located the via hole of seting up in last valve body 1, it is provided with PEEK pipeline 7 through a pair of connecting screw 6 is fixed between valve body 1 and the lower valve body 2 to go up, micrometer screw 5's bottom face with the outer wall contact of PEEK pipeline 7, the both ends of PEEK pipeline 7 then link to each other with a two-way 8 that does not have the dead volume respectively, and two-way 8 also is located between valve body 1 and the lower valve body 2.

Compared with the prior art, the utility model, have following advantage:

this kind of structural style's continuously adjustable damping valve, its simple structure, design benefit, small in size, it adopts the PEEK pipeline that can realize elastic deformation as the infusion pipeline, through the mode that rotates the micrometer, drives micrometer screw on the micrometer along self axial motion, through letting the PEEK pipeline take place the mode of warping, changes the bulk flow of damping valve. The adjustment can be carried out on line under the conditions of no stop and liquid discharge, and the micrometer is used as a driving mechanism for adjustment, so that the very precise adjustment can be realized, and the method is very suitable for occasions with extremely high precision requirements. The damping valve has the advantages of simple manufacturing process and low manufacturing cost, so the damping valve is particularly suitable for popularization and application in the field and has very wide market prospect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The following description will explain embodiments of the present invention with reference to the drawings. As shown in fig. 1: the utility model provides a continuous adjustable damping valve, includes the valve body, and the valve body here comprises interconnect's last valve body 1 and lower valve body 2, is provided with a plurality of footing 3 on the bottom face of valve body 2 down, upward be provided with micrometer 4 on the valve body 1, micrometer 4's micrometer screw 5 is located and offers in the via hole in last valve body 1, go up and be provided with PEEK pipeline 7 through a pair of connecting screw 6 is fixed between valve body 1 and the lower valve body 2, micrometer screw 5's bottom face with the outer wall contact of PEEK pipeline 7, the both ends of PEEK pipeline 7 then link to each other with two logical 8 of a no dead volume respectively, and two logical 8 also are located between valve body 1 and the lower valve body 2.

The utility model discloses continuous adjustable damping valve's working process as follows: the damping valve is connected in a high performance liquid chromatography system, liquid enters from one two-way pipe 8 and is discharged from the other two-way pipe 8 after passing through a PEEK pipe 7, and resistance can be formed at the position due to the relatively small caliber of the PEEK pipe 7, so that the constant water flow speed and water pressure in a subsequent pipeline are ensured;

when needing to adjust, the user rotates the knob at 4 tops of micrometer, and micrometer screw 5 in micrometer 4 can be along the axis motion of self under the effect of spiral, applys pressure to PEEk pipeline 7 to make it take place to warp, and PEEK pipeline 7 warp the back, and its flow also can take place corresponding change, thereby realizes the online adjustment to the damping valve.

Claims

1. The utility model provides a continuously adjustable damping valve, includes the valve body, its characterized in that: the valve body constitute by interconnect's last valve body (1) and lower valve body (2), be provided with a plurality of footing (3) on the bottom face of valve body (2) down, upward be provided with micrometer (4) on valve body (1), micrometer (4) micrometer screw rod (5) are located and offer in the via hole in last valve body (1), it is provided with PEEK pipeline (7) through a pair of connecting screw (6) are fixed between valve body (1) and lower valve body (2), micrometer screw rod (5) the bottom face with the outer wall contact of PEEK pipeline (7), the both ends of PEEK pipeline (7) then link to each other with two logical (8) of a no dead volume respectively, and two logical (8) also are located between valve body (1) and the lower valve body (2).