CN202082457U - Magnetofluid medical electromagnetic valve - Google Patents

Abstract

The utility model discloses a magnetofluid medical electromagnetic valve. The magnetofluid medical electromagnetic valve comprises an emergency hand push rod, an electromagnetic valve press cap, an electromagnetic valve shell, an exciting coil, an electromagnetic valve rod, a magnetofluid seal, nanometer magnetofluid, a floating piston, a return spring, a photoelectrical counting rod, cooling magnetofluid, an electromagnetic shielding layer and a friction reduction layer. The magnetofluid medical electromagnetic valve is installed on the blood separator and is used for controlling the separation and conveying of the blood. The magnetofluid medical electromagnetic valve also can be independently used for controlling the opening and the closing of a clinical transfusion tube. Due to the adoption of the magnetofluid medical electromagnetic valve, the weaknesses of the traditional electromagnetic valve for the blood machine that the resource consumption is large, the noise is large, electromagnetic interference on the control computer can be caused, noise influences the patients, structural technical content is low, the valve is difficult to maintain and repair, and the like can be overcome. The nanometer magnetofluid is used for substituting electrician pure iron, so the weight of the electromagnetic valve is reduced by 50 percent compared with that of a traditional medical electromagnetic valve, no application danger exists, the occupied field is small, the electromagnetic valve is convenient to produce, the resource consumption is small, no pollution is produced, no noise exists, and the electromagnetic valve belongs to the environment-friendly medical equipment.

Description

Magnetic fluid electro-medical magnet valve

Technical field

The utility model belongs to green medical equipment field, is used for medical blood separator blood plasma transfer passage control and the control of medical transfusion tube passage, i.e. magnetic fluid electro-medical magnet valve.

Background technique

The mutual rigidity of conventional medical solenoid valve iron core and money circle metal frame attracts collision, and the fluctuation of impact noise and blood plasma quantity delivered when easily forming spool self-oscillation and switch produces certain behaviour's sound stimulation and spirit interference to the prescription on individual diagnosis patient.Consume electrical pure iron more, electromagnetic interference is arranged to defectives such as computer are influential.

Summary of the invention

The purpose of this utility model provides electromagnetism a kind of many fields of employment, no, magnetic fluid electro-medical magnet valve chemical contamination, low in resources consumption equipment.

In order to achieve the above object, the utility model has adopted following technological scheme;

The utility model organization plan comprises; Comprise emergent hand push-rod, the solenoid valve clamping cap, the solenoid valve housing, drive coil, the electromagnetism valve rod, magnet fluid sealing, nanometer magnetofluid, floating piston, Returnning spring, the photoelectric counting bar, the cooling magnetic fluid, coating for EMI shielding, the antifriction layer, the blood plasma delivery hose, the switch power line, emergent hand push-rod is installed on the solenoid valve clamping cap, the blood plasma delivery hose is installed between solenoid valve clamping cap and the electromagnetism valve rod, the solenoid valve housing is installed on solenoid valve clamping cap two place's scrobicular rings, drive coil is contained on the interior pipe of solenoid valve housing, the cooling magnetic fluid is coated on around the drive coil, the electromagnetism valve rod is installed in simultaneously on solenoid valve clamping cap endoporus and the solenoid valve housing endoporus and forms sliding pair, in electromagnetism valve rod lower loop shape groove and between the pipe magnet fluid sealing is installed in the solenoid valve housing, floating piston is installed on the interior pipe of solenoid valve housing, in the circular groove of floating piston and in the solenoid valve housing, between the pipe magnet fluid sealing is installed, the nanometer magnetofluid of packing between the electromagnetism valve rod lower end surface in the solenoid valve housing and the upper-end surface of floating piston, between floating piston lower end surface and solenoid valve housing lower end surface, Returnning spring is installed, bondingly in the endoporus of floating piston lower end surface press-fit the photoelectric counting bar, photoelectric counting bar bottom cylindrical surface slides and passes solenoid valve housing lower end center hole.The magnetic fluid electro-medical magnet valve of being formed is installed on the medical equipment blood separator, is used for the control that plasma separation is carried, and is vital parts on the blood separator.Also can independently be used for open and close control to the clinical transfusion pipe.

The utility model has adopted the cooling magnetic fluid to replace the electromagnet metal frame and has played cooling action to drive coil.Adopt the high molecular floating piston of soft magnetism, nanometer magnetofluid, the flexible move mode of electromagnetism valve rod to replace the traditional electrical magnet valve iron core and the mutual rigid collision attraction of the money circle metal frame kind of drive, spool impact noise when having solved spool self-oscillation and switch.Avoided that the prescription on individual diagnosis patient is produced certain behaviour's sound and disturbed the electromagnetic interference that reaches controlling computer.Switch on saturated formation magnetic field, cooling magnetic fluid intelligence of drive coil becomes the class solid mutually, form magnetic pole and discharge micro-heat, under this action of a magnetic field, force nanometer magnetofluid to move downward and promote the floating piston compression reseting spring, driving the electromagnetism valve rod simultaneously moves downward, the electromagnetism valve rod is separated, i.e. the released conducting of blood plasma delivery pipe with the solenoid valve clamping cap.Simultaneously, to make it because of magnetic intensity increases to certain position be class solid and from locking in this position by liquid phase-change intelligently along with nanometer magnetofluid moves downward.When drive coil dead electricity, magnetic field diminishes, this change of perception of cooling magnetic fluid also becomes liquid intelligently mutually, and absorbing certain heat simultaneously is cooler environment.This moment nanometer magnetofluid also this variation of perception become liquid immediately intelligently mutually, under action of reset spring, floating piston, nanometer magnetofluid, solenoid valve valve rod integral body move up to electromagnetism valve rod and solenoid valve clamping cap to compress the blood plasma delivery hose only are that the blood plasma delivery hose is closed.So far finish a work Xun ring.By the antifriction layer slip and seal friction coefficient between electromagnetism valve rod, floating piston, magnetic current sealing and the solenoid valve inner walls are reduced greatly.Thereby the poppe tvalve core spool uses and receives a mandate significantly.By the application of magnetic current sealing (6), make nanometer magnetofluid (7) not to external leaks, and become colloidal state intelligently at this place mutually and seal " O " type circle.Make leakage way sealed.

Description of drawings

Fig. 1 magnetic fluid electro-medical magnet valve plan view;

Fig. 2 magnetic fluid electro-medical magnet valve left view;

Fig. 3 magnetic fluid electro-medical magnet valve plan view;

Fig. 4 magnetic fluid electro-medical magnet valve master looks enlarged view;

Among the figure; Emergent hand push-rod (1), solenoid valve clamping cap (2), solenoid valve housing (3), drive coil (4), electromagnetism valve rod (5), magnetic current sealing (6), nanometer magnetofluid (7), floating piston, Returnning spring (9), photoelectric counting bar (10), cooling magnetic fluid (11), coating for EMI shielding (12), antifriction layer (13), blood plasma delivery hose (14), switch power line (15).

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

As shown in Figure 1.Emergent hand push-rod (1), solenoid valve clamping cap (2), solenoid valve housing (3), drive coil (4), electromagnetism valve rod (5), magnet fluid sealing (6), nanometer magnetofluid (7), floating piston (8), Returnning spring (9), photoelectric counting bar (10), cooling magnetic fluid (11), coating for EMI shielding (12), antifriction layer (13), blood plasma delivery hose (14), switch power line (15), emergent hand push-rod (1) is installed on the solenoid valve clamping cap (2), there is slight clearance the lower end surface and electromagnetism valve rod (5) upper-end surface of emergent hand push-rod (1), blood plasma delivery hose (14) is installed between solenoid valve clamping cap (2) and the electromagnetism valve rod (5), solenoid valve housing (3) is installed on solenoid valve clamping cap (2) two place's scrobicular rings, drive coil (4) is contained in the solenoid valve housing (3), cooling magnetic fluid (11) is coated on drive coil (4) on every side, antifriction layer (13) is coated on solenoid valve housing (3) inner tube wall, electromagnetism valve rod (5) is installed in simultaneously on solenoid valve clamping cap (2) endoporus and solenoid valve housing (3) endoporus and forms sliding pair, in the circular groove of electromagnetism valve rod (5) lower end and in the solenoid valve housing (3), between the pipe magnet fluid sealing (6) is installed, floating piston (8) is installed on the interior pipe of solenoid valve housing (3), in floating piston (8) circular groove and in the solenoid valve housing (3), between the pipe magnet fluid sealing (6) is installed, the nanometer magnetofluid (7) of packing between electromagnetism valve rod (5) lower end surface in solenoid valve housing (3) and the upper-end surface of floating piston (8), between floating piston (8) lower end surface and solenoid valve housing (3) lower end surface, Returnning spring (9) is installed, bondingly in the endoporus of floating piston (8) lower end surface press-fit photoelectric counting bar (10), photoelectric counting bar (10) bottom cylindrical surface slides and passes solenoid valve housing (3) lower end center hole.As shown in Figure 4, cooling magnetic fluid (11) all is a magnetic liquid with nanometer magnetofluid (7), has adopted cooling magnetic fluid (7) to replace the electromagnet metal frame and plays cooling action to drive coil (4).Adopt floating piston (8), the nanometer magnetofluid (7) of macromolecular material and adopt the electromagnetism valve rod (5) of macromolecule soft magnetic material under drive coil (4) the action of a magnetic field, to move in flexibility interlock mode, replace the mutual rigid collision of traditional electrical magnet spool and money circle metal frame and attract move mode, spool impact noise when having solved spool self-oscillation and switch.Avoided that the prescription on individual diagnosis patient is produced certain behaviour's sound and disturbed the electromagnetic interference that reaches controlling computer.Antifriction layer (13) reduces slip and the seal friction coefficient between electromagnetism valve rod (5), floating piston (8), magnetic current sealing (6) and the solenoid valve housing (3) greatly, thus poppe tvalve core working life and dynamic responding speed significantly.Application by magnetic current sealing (6) makes nanometer magnetofluid (7) to the sealed constraint of the infiltration of outside, and becomes colloidal state " O " type circle intelligently mutually.

The utility model cost of production is low, also provides advantage for making full use of production site.

Claims (2)

1. magnetic fluid electro-medical magnet valve, comprise emergent hand push-rod (1), solenoid valve clamping cap (2), solenoid valve housing (3), drive coil (4), electromagnetism valve rod (5), magnet fluid sealing (6), nanometer magnetofluid (7), floating piston (8), Returnning spring (9), photoelectric counting bar (10), cooling magnetic fluid (11), coating for EMI shielding (12), antifriction layer (13), blood plasma delivery hose (14), switch power line (15), emergent hand push-rod (1) is installed on the solenoid valve clamping cap (2), blood plasma delivery hose (14) is installed between solenoid valve clamping cap (2) and the electromagnetism valve rod (5), solenoid valve housing (3) is installed on two place's scrobicular rings of solenoid valve clamping cap (2), drive coil (4) is contained on the interior pipe of solenoid valve housing (3), cooling magnetic fluid (11) is coated on drive coil (4) on every side, electromagnetism valve rod (5) is installed in simultaneously on solenoid valve clamping cap (2) endoporus and solenoid valve housing (3) endoporus and forms sliding pair, in the circular groove of electromagnetism valve rod (5) lower end and in the solenoid valve housing (3), between the pipe magnet fluid sealing (6) is installed, floating piston (8) is installed on the interior pipe of solenoid valve housing (3), in floating piston (8) circular groove and in the solenoid valve housing (3), between the pipe magnet fluid sealing (6) is installed, the nanometer magnetofluid (7) of packing between electromagnetism valve rod (5) lower end surface in solenoid valve housing (3) and the upper-end surface of floating piston (8), between floating piston (8) lower end surface and solenoid valve housing (3) lower end surface, Returnning spring (9) is installed, bondingly in the endoporus of floating piston (8) lower end surface press-fit photoelectric counting bar (10), photoelectric counting bar (10) bottom cylindrical surface slides and passes solenoid valve housing (3) lower end center hole.

2. magnetic fluid electro-medical magnet valve according to claim 1, it is characterized in that cooling off magnetic fluid (11) all is magnetic liquid with nanometer magnetofluid (7).

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