CN105436134A - Needle washing device for blood rheometer - Google Patents

Abstract

The invention discloses a needle washing device for a blood rheometer. The needle washing device is provided a needle washer, wherein the needle washer comprises a conical chamber and a vertical liquid outlet pipe, the conical chamber is of big top and small bottom and is arranged at the upper part, and the liquid outlet pipe is arranged at the lower part; the upper end of the conical chamber is opened, and a washing liquid inlet is formed in the side wall of the conical chamber; the lower end of the conical chamber is communicated with the liquid outlet pipe, and the shaft axis of the conical chamber and the shaft axis of the liquid outlet pipe are in a straight line; a spiral groove is formed in the inner wall of the liquid outlet pipe. The needle washing device has the beneficial effects of meeting the effects of great washing force, high washing speed, good washing effect and no pollution and meanwhile can be matched with the condition that washing liquid enters the washer. The inclined angle of the conical chamber and the thickness of the liquid outlet pipe are changed, and the washing effect is further improved.

Description

A kind of blood rheological instrument washes needle device

Technical field

The present invention relates to medical instruments field, particularly relate to a kind of blood rheological instrument and wash needle device.

Background technology

Blood rheological instrument is a kind of medical machinery for checking blood viscosity.Blood rheological instrument needs to carry out sampling processing to invisible spectro blood successively with sampling needle in the course of the work, and each sampling all needs instrument automatically to clean sampling needle.

At present, on blood rheological instrument, the cleaning way of various sampling needle generally has bubble type, spring formula and scrapes formula three kinds.Three kinds of cleaning ways are provided with washer, and sampling needle have passed through washer, and when cleaning, sampling needle also can be moved back and forth up and down by the control of computer.The obvious shortcomings such as bubble type and spring formula have cleaning not wash clean slowly, clearly, and the cleaning of spring formula also needs more cleaning fluid; Although it is fast to scrape formula cleaning cleaning, just has sample material after there is cleaning a period of time and remain and the shortcoming that pollutes.

Summary of the invention

Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide a kind of blood rheological instrument and washes needle device.

Technical solution of the present invention is as follows: a kind of blood rheological instrument washes needle device, have and wash pin device, the described drain pipe washed pin device and comprise the up big and down small conical bores in top and lower vertical shape, the upper end of conical bores is uncovered, the sidewall of this conical bores is provided with the inlet of cleaning fluid, the lower end of conical bores is communicated with drain pipe, and the axial line of the axial line of conical bores and drain pipe point-blank, and the inwall of described drain pipe is provided with spiral groove.

Adopt above technical scheme, lower openings and the sampling needle of washing the conical bores on pin device top are just right, and sampling needle moves up and down circularly, is entered in drain pipe by conical bores.While sampling needle moves up and down, the pipeline of inlet has accessed liquid feeding pump, cleaning fluid is poured to conical bores inner high voltage by inlet, under inertia and Action of Gravity Field, rotational flow is understood, meanwhile, because mid portion flow velocity is the fastest time cleaning fluid flows to, conical bores edge is because resistance flow velocity is the slowest, automatically can form whirlpool, circinate cleaning fluid fluid has larger scouring force to sampling needle, makes sampling needle be cleaned cleaner.Simultaneously, drain pipe pipeline has also accessed drawing liquid pump, the cleaning fluid making to have cleaned sampling needle is under the spiral groove positive action of drawing liquid pump and drain pipe inwall, by liquid flow with rotation, form revolving force, then drive the liquid in rotation of whole vertical portion to twist, and have again the pressure of drawing liquid pump, the power of this rotation is more powerful, produces more powerful liquid scouring force.

Present invention utilizes the setting of the spiral groove on conical bores and drain pipe, make cleaning fluid be that swirling is cleaned sampling needle, have cleaning great efforts, cleaning speed is fast, the good and free of contamination beneficial effect of cleaning performance.

Further, the sidewall of described conical bores and the angular range of horizontal plane are 25 °-70 °.There is identical flushing dynamics and angle enters into conical bores at cleaning fluid, when sidewall and the horizontal plane of conical bores have different angles, the swirl shape current that emergency degree is different can be produced, thus the scouring force had is also different, so according to the needs of working control, the conical bores of different angle can be adopted.

Further, the internal diameter of described drain pipe is 4mm-6mm.The sampling needle diameter of blood rheological instrument is on the market mostly 2mm, internal diameter is the drain pipe of 4mm-6mm is the gap that sampling needle and drain pipe inwall leave a suitable width, cleaning fluid can be made to contact with sampling needle well, be unlikely to again to lean on too recent photo ring the work of sampling needle.

Beneficial effect is: the present invention design ingenious, structure simple, implement easily, cost is low, meet cleaning great efforts, cleaning speed is fast, good and the free of contamination effect of cleaning performance, simultaneously can also enter into the situation of washer by matching purge liquid, the change angle of conical bores and the thickness of drain pipe improve the effect of cleaning further.

Accompanying drawing explanation

Fig. 1 is the structural representation of the embodiment of the invention.

1-washes pin device, 1a-conical bores, 1b-drain pipe, 1c-inlet, 1d-groove, A-horizontal line.

Detailed description of the invention

Below in conjunction with drawings and Examples, the invention will be further described.

As shown in Figure 1, wash pin device 1 to be made up of the up big and down small conical bores 1a on top and the drain pipe 1b of lower vertical shape.Wherein, the upper end of conical bores 1a is uncovered, and the sidewall of this conical bores 1a and the angle of horizontal line A are 25 °-70 °, and the present embodiment is preferably 60 °.The sidewall of conical bores 1a is provided with the inlet 1c of cleaning fluid.The lower end of conical bores 1a and the upper end of drain pipe 1b are connected as a single entity, and the lower port of conical bores 1a is communicated with the inside of drain pipe 1b, and the axial line of conical bores 1a and the axial line of drain pipe 1b are point-blank.The inwall of described drain pipe 1b is provided with spiral groove 1d, and that drain pipe 1b is 4mm-6mm, and the present embodiment is preferably 6mm.Be positioned over the circular tube shaped thing washed in pin device 1 in figure and be sampling needle, sampling needle external diameter current is on the market 2mm.

As shown in Figure 1, inlet 1c is as cleaning fluid upstream end, and its outside pipeline connected is provided with liquid feeding pump, and liquid feeding pump provides power, make, by the inlet 1c cleaning fluid entered in conical bores 1a, there is certain pressure, can rotational flow under inertia and Action of Gravity Field when flowing to.Meanwhile, because mid portion flow velocity is the fastest, conical bores 1a edge is because resistance flow velocity is the slowest, and automatically can form whirlpool, circinate cleaning fluid fluid has larger scouring force to sampling needle.Cleaning fluid enters into drain pipe 1b, under the spiral groove of drain pipe 1b inwall forces guide functions, liquid flow also produces rotation, form revolving force, then drive the liquid in rotation of whole vertical portion to twist, and simultaneously, the pipeline of drain pipe 1b is also provided with drawing liquid pump, drawing liquid pump extracts cleaning fluid, increases the flow strength of cleaning fluid, makes the whirlpool of formation more powerful.

In Fig. 1, conical bores 1a and horizontal angle be 60 ° as preferred value.By physical principle, we know, the power that cleaning fluid flows downward is that himself gravity is along the component on the sidewall of conical bores 1a, so the conical bores 1a component that has different size corresponding from horizontal different angle, and then affect the flowing severe degree of cleaning fluid and form the degree of whirlpool.Obviously, the flowing cleaning fluid of different severe degree has different cleaning performances, and this variable flowing can meet actual needs with the size cooperation of liquid feeding pump power.

Existing current sampling needle external diameter size is generally 2mm, and the drain pipe 1b of 6mm internal diameter size, on cooperation sampling needle, both can not leave too wide gap, also can not cause that cleaning fluid viscous force is too large and mobility is bad because of gap is too narrow.

In specific implementation process, open the liquid feeding pump on inlet 1c pipeline, liquid feeding pump starts to be pressed into cleaning fluid in conical bores 1a, cleaning fluid with certain speed rushes at the inwall of conical bores 1a and starts to produce whirlpool liquid stream, fully contact with the sampling needle entered in washer 1, generation is washed away simultaneously.Due to Action of Gravity Field, cleaning fluid meeting nature, toward current downflow, enters in drain pipe 1b.Due to the spiral groove 1d guide functions in drain pipe 1b, add the swabbing action of drawing liquid pump to cleaning fluid, the swirling disturbance of cleaning fluid in drain pipe 1b can strengthen, and produces the scouring force larger to sampling needle.Meanwhile, due to the larger swabbing action of drawing liquid pump, the cleaning fluid in conical bores 1a can be arranged cleaner.

Complete cleaning fast by the sampling needle washer in the present embodiment, and sampling needle after cleaning is clean, clean, can be used relievedly.

More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technical staff in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (1)

1. a blood rheological instrument washes needle device, have and wash pin device (1), it is characterized in that: described in wash the drain pipe (1b) that pin device (1) comprises the up big and down small conical bores in top (1a) and lower vertical shape, the upper end of conical bores (1a) is uncovered, the sidewall of this conical bores (1a) is provided with the inlet (1c) of cleaning fluid, the lower end of conical bores (1a) is communicated with drain pipe (1b), and the axial line of the axial line of conical bores (1a) and drain pipe (1b) point-blank, the inwall of described drain pipe (1b) is provided with spiral groove (1d),

The sidewall of described conical bores (1a) and the angular range of horizontal plane are 25 °-70 °;

The internal diameter of described drain pipe (1b) is 4mm-6mm.