CN102631960B

CN102631960B - Switching device

Info

Publication number: CN102631960B
Application number: CN201210130602XA
Authority: CN
Inventors: 徐继文
Original assignee: CHANGZHOU PAISIJIE MEDICAL EQUIPMENT Co Ltd
Current assignee: CHANGZHOU PAISIJIE MEDICAL EQUIPMENT Co Ltd
Priority date: 2012-04-28
Filing date: 2012-04-28
Publication date: 2013-12-11
Anticipated expiration: 2032-04-28
Also published as: CN102631960A

Abstract

The invention discloses a switching device. An output shaft of a motor is connected with a rotating shaft joint in a transmission manner; a graduated disk seat is fixedly connected with one end of a shaft core; a graduated disk is mounted on the graduated disk seat; an optoelectronic switch can sense the readings of the graduated disk; the rotating shaft joint is fixedly connected with the shaft core; an elastic piece is sleeved on the shaft core; one end of the elastic piece is abutted against the shaft core, and the other end of the elastic piece is abutted against the inner end of a shaft sleeve; a shaft seat is provided with eight radial flow through holes and axial flow through holes, which are uniformly distributed at intervals in an angle of 45 degrees; the radial flow through holes are communicated with the respective axial flow through holes; the shaft core is provided with a first radial switching hole and a second radial switching hole; the first radial switching hole and the second radial switching hole are distributed in an angle of 45 degrees; the two ends of the first radial switching hole and the second radial switching hole are respectively communicated with axial switching holes; and the respective axial switching holes at the two ends of the first radial switching hole and the second radial switching hole on the shaft core are respectively communicated with the respective axial flow through holes of the eight radial flow through holes on the corresponding shaft sleeve. The switching device disclosed by the invention improves the test precision.

Description

Switching device shifter

Technical field

The present invention relates to a kind of switching device shifter, reagent switching device shifter in turn for the test that especially relates to a kind of laboratory.

Background technology

In the laboratories such as chemical industry, medical treatment and universities and colleges, all need extract and react high-purity and high-precision reagent is tested by reactor, some is that several reagent need to carry out in turn, traditional reagent inlet and outlet reactor is realized by pump, the reagent that enters reactor by pump normally has been mingled with impurity, has so just affected test accuracy.

Summary of the invention

The object of the present invention is to provide a kind of switching device shifter that improves test accuracy.

In order to achieve the above object, technical scheme of the present invention is: a kind of switching device shifter, comprise motor, support bar, index dial, the index dial seat, the axle core, axle sleeve, axle bed, optoelectronic switch, rotating shaft joint and elastic component, motor is fixedly connected with axle sleeve by support bar, axle bed is fixedly connected with axle sleeve, there is axle sleeve hole on axle sleeve, the other end of axle core is positioned at axle sleeve hole, and outside an end projecting shaft trepanning, the output shaft of motor and rotating shaft joint are in transmission connection, the index dial seat is fixedly connected with an end of axle core, and index dial is arranged on the index dial seat, optoelectronic switch and axle sleeve load, and can respond to the number of degrees of index dial, the rotating shaft joint is fixedly connected with the axle core by the index dial seat, elastic component is sleeved on the axle core, one end and axle core offset, the other end and axle sleeve the inner offset, eight the radial flow through holes and the axial flow through hole that there are the 45 ° of distributions in even interval on described axle bed, and each radial flow through hole all is communicated with corresponding separately axial flow through hole, having first on the axle core radially switches hole and second and radially switches hole, first radially switches hole and second radially switches hole and is 45 ° of distributions, and first radially switches hole and second radially switches the two ends in hole and is respectively equipped with the axial switching hole separately be communicated with it, and when the axle core rotates, on the axle core, first radially switches hole and second and radially switches the axial switching hole separately, two ends in hole and can be communicated with eight radial flow through holes axial flow through hole separately on corresponding axle sleeve.

Also be set with thrust bearing on described axle core, an end and the thrust bearing of elastic component offset.

Described motor is fixedly connected with support bar by motor mounting plate.

Have accommodation hole on described support bar, have the fine setting cover in accommodation hole, have trimming bolt on motor mounting plate, trimming bolt is connected with the fine setting external threading.

Described elastic component is stage clip.

After adopting said structure, due to eight radial flow through holes that there are the 45 ° of distributions in even interval on axle bed and axial flow through hole, and each radial flow through hole all is communicated with axial flow through hole separately, having first on the axle core radially switches hole and second and radially switches hole, first radially switches hole and second radially switches hole and is 45 ° of distributions, and first radially switches hole and second radially switches the two ends in hole and is communicated with axial switching hole separately respectively, and when the axle core rotates, on the axle core, first radially switches hole and second and radially switches the axial switching hole separately, two ends in hole and can be communicated with eight radial flow through holes axial flow through hole separately on corresponding axle sleeve, therefore pass through the rotation of driven by motor axle core in the present invention, coordinate air pump, can drive the conversion that air pressure carries out positive and negative air-pressure, for extracting various reagent, enter in reactor and tested, do not have impurity to enter reactor, improved test accuracy.

The accompanying drawing explanation

Fig. 1 is structure cutaway view of the present invention;

Fig. 2 is the A-A cutaway view in Fig. 1;

Fig. 3 is B-B cutaway view in Fig. 1;

Fig. 4 is negative pressure state figure of the present invention;

Fig. 5 is barotropic state figure of the present invention.

The specific embodiment

The present invention is further detailed explanation for the embodiment provided below in conjunction with accompanying drawing.

Referring to Fig. 1, 2, shown in 3, a kind of switching device shifter, comprise motor 1, support bar 2, index dial 3, index dial seat 4, axle core 5, axle sleeve 6, axle bed 7, optoelectronic switch 8, rotating shaft joint 9 and elastic component 10, motor 1 is fixedly connected with axle sleeve 6 by support bar 2, axle bed 7 is fixedly connected with axle sleeve 6, there is axle sleeve hole 6-1 on axle sleeve 6, the other end of axle core 5 is positioned at axle sleeve hole 6-1, and outside an end projecting shaft trepanning 6-1, the output shaft 1-1 of motor 1 and rotating shaft joint 9 are in transmission connection, index dial seat 4 is fixedly connected with an end of axle core 5, and index dial 3 is arranged on index dial seat 4, optoelectronic switch 8 and axle sleeve 6 loads, and can respond to the number of degrees of index dial 3, rotating shaft joint 9 is fixedly connected with axle core 5 by index dial seat 4, elastic component 10 is sleeved on axle core 5, one end and axle core 5 offset, the other end and axle sleeve 6 the inners offset, eight the radial flow through hole 7-1 and the axial flow through hole 7-2 that there are the 45 ° of distributions in even interval on described axle bed 7, and each radial flow through hole 7-1 all is communicated with corresponding separately axial flow through hole 7-2, having first on axle core 5 radially switches hole 5-1 and second and radially switches hole 5-2, first radially switches hole 5-1 and second radially switches hole 5-2 and is 45 ° of distributions, and first radially switches hole 5-1 and second radially switches 5-2 two ends, hole and is respectively equipped with the axial switching hole 5-3 separately be communicated with it, and when axle core 5 rotates, on axle core 5, first radially switches hole 5-1 and second and radially switches 5-2 two ends, hole axial switching hole 5-3 separately and can be communicated with eight radial flow through hole 7-1 axial flow through hole 7-2 separately on corresponding axle sleeve 6.

Shown in Figure 1, for better sealing, on described axle core 5, also be set with thrust bearing 11, an end and the thrust bearing 11 of elastic component 10 offset.

Shown in Figure 1, more reasonable for structure, described motor 1 is fixedly connected with support bar 2 by motor mounting plate 13.

Shown in Figure 1, in order to adjust the concentricity of axial switching hole 5-3 axial flow through hole 7-2, and there is accommodation hole 2-1 on described support bar 2, there is fine setting cover 12 in accommodation hole 2-1, have trimming bolt 14 on motor mounting plate 13, trimming bolt 14 is threaded with fine setting cover 12.

Shown in Figure 1, for better sealing, described elastic component 10 is stage clip.

Shown in Fig. 1,2,3,4,5, when the present invention uses, the escape pipe 15-1 of air pump 15 is divided into to two-way to be communicated with two adjacent radial flow through hole 7-1 respectively, air inlet pipe 15-2 is divided into two-way two adjacent radial flow through hole 7-1 connections of the first two radial flow through hole 7-1 with it respectively, the turnover tracheae 16-1 of reactor 16 is divided into two-way and is communicated with a radial flow through hole 7-1 on a road respectively, and another Lu Yuyi radial flow through hole 7-1 is communicated with, when motor 1 drives index dial 3 rotations, optoelectronic switch 8 detects index dial 3 in the time of 0, shown in Figure 4, now first of axle core 5 the axial switching hole 5-3 that radially switches hole 5-1 mono-end is communicated with the turnover tracheae 16-1 of reactor 16, the road pipeline connection of the air inlet pipe 15-2 of the other end and air pump 15, the end that second of axle core 5 radially switches hole 5-2 is communicated with atmosphere, the other end is communicated with the escape pipe 15-1 of air pump 15, now negative pressure state appears in reactor, current divider 17 is switched to A, B, C, D, E, F, any one reagent container of G, extraction reagent enters reactor 16 and is tested, when driven by motor index dial 3 is rotated counterclockwise 90 ° again, shown in Figure 5, now first of axle core 5 the axial switching hole 5-3 that radially switches hole 5-1 mono-end is communicated with the turnover tracheae 16-1 of reactor 16, another road pipeline connection of the escape pipe 15-1 of the other end and air pump 15, the end that second of axle core 5 radially switches hole 5-2 is communicated with atmosphere, the other end is communicated with the air inlet pipe 15-2 of air pump 15, now barotropic state appears in reactor, air pump 15 again flows into the reagent in reactor 16 in cell therefor and preserves, to treat use next time, therefore the present invention's rotation with moving axis core 5 by motor 1, coordinate air pump 15, can drive the conversion that air pressure carries out positive and negative air-pressure, for extracting various reagent, enter in reactor 16 and tested, do not have impurity to enter reactor, improved test accuracy.

Claims

1. a switching device shifter, it is characterized in that: comprise motor (1), support bar (2), index dial (3), index dial seat (4), axle core (5), axle sleeve (6), axle bed (7), optoelectronic switch (8), rotating shaft joint (9) and elastic component (10), motor (1) is fixedly connected with axle sleeve (6) by support bar (2), axle bed (7) is fixedly connected with axle sleeve (6), there is axle sleeve hole (6-1) on axle sleeve (6), the other end of axle core (5) is positioned at axle sleeve hole (6-1), and outside an end projecting shaft trepanning (6-1), the output shaft (1-1) of motor (1) is in transmission connection with rotating shaft joint (9), index dial seat (4) is fixedly connected with an end of axle core (5), and index dial (3) is arranged on index dial seat (4), optoelectronic switch (8) and axle sleeve (6) load, and can respond to the number of degrees of index dial (3), rotating shaft joint (9) is fixedly connected with axle core (5) by index dial seat (4), elastic component (10) is sleeved on axle core (5), one end and axle core (5) offset, the other end and axle sleeve (6) the inner offsets, eight the radial flow through holes (7-1) and the axial flow through hole (7-2) that there are the 45 ° of distributions in even interval on described axle bed (7), and each radial flow through hole (7-1) all is communicated with corresponding separately axial flow through hole (7-2), having first on axle core (5) radially switches hole (5-1) and second and radially switches hole (5-2), first radially switches hole (5-1) and second radially switches hole (5-2) and is 45 ° of distributions, and first radially switches hole (5-1) and second radially switches the two ends in hole (5-2) and is respectively equipped with the axial switching hole (5-3) separately be communicated with it, and when axle core (5) rotates, axle core (5) upper first radially switches hole (5-1) and second and radially switches the axial switching hole (5-3) separately, two ends in hole (5-2) and can be communicated with upper eight the radial flow through holes of corresponding axle sleeve (6) (7-1) axial flow through hole (7-2) separately.

2. switching device shifter according to claim 1, it is characterized in that: also be set with thrust bearing (11) on described axle core (5), an end of elastic component (10) and thrust bearing (11) offset.

3. switching device shifter according to claim 1, it is characterized in that: described motor (1) is fixedly connected with support bar (2) by motor mounting plate (13).

4. switching device shifter according to claim 3, it is characterized in that: there is accommodation hole (2-1) on described support bar (2), there is fine setting cover (12) in accommodation hole (2-1), have trimming bolt (14) on motor mounting plate (13), trimming bolt (14) is threaded with fine setting cover (12).

5. switching device shifter according to claim 1, it is characterized in that: described elastic component (10) is stage clip.