CN216718414U

CN216718414U - Multichannel fast switching device suitable for water quality automatic detector

Info

Publication number: CN216718414U
Application number: CN202220217820.6U
Authority: CN
Inventors: 范德齐
Original assignee: Chengdu Xinkunlun Measurement And Control Technology Co ltd
Current assignee: Chengdu Xinkunlun Measurement And Control Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-10
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a multi-channel quick switching device suitable for an automatic water quality detector, relates to the field of water quality detection, and can realize quick switching of a plurality of channels. The rotary cover comprises a cover body and a rotating body, wherein the cover body and the opposite side of the rotating body are mutually attached; the cover body is provided with a first channel and a plurality of second channels, ports on one sides of the first channel and the second channels are arranged on one side, facing the rotating body, of the cover body, wherein the port of the first channel is located on the axis, and the ports of the second channels are circumferentially arranged around the axis; one side of the rotating body facing the cover body is provided with a switching groove, one end of the groove is located on the axis and communicated with the port of the first channel, and the other end of the groove can be communicated with the port of the second channel through rotation of the rotating body. According to the utility model, the switching groove is driven to rotate by the rotating body, so that the second channel communicated with the first channel is switched, and the rapid switching of a plurality of channels can be realized by the rotation of the rotating body, and the switching process is simple and reliable.

Description

Multichannel fast switching device suitable for water quality automatic detector

Technical Field

The utility model relates to the field of water quality detection, in particular to a multi-channel quick switching device suitable for an automatic water quality detector.

Background

Human beings can not leave water in life and production activities, and the quality of water such as sewage, surface water is closely related to human health. With the development of social economy, scientific progress and improvement of the living standard of people, the requirement of people on water quality is continuously improved, so that a water quality sample needs to be detected through water quality monitoring equipment.

The existing automatic water quality detector needs to collect and extract various reagents and samples in a short time to carry out chemical reaction, and is mostly provided with a plurality of peristaltic pumps to extract multi-channel reagents and samples, but the structure is complex, the cost is high, the reliability is not high, and a multi-channel quick switching device of the automatic water quality detector with a simpler structure and higher reliability is needed.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: provided is a multichannel fast switching device capable of realizing fast switching of a plurality of channels.

The utility model is realized by the following technical scheme:

a multi-channel quick switching device suitable for a water quality automatic detector comprises a cover body and a rotating body which are sequentially arranged along the same axis, wherein the opposite sides of the cover body and the rotating body are mutually attached;

the cover body is provided with a first channel and a plurality of second channels, first ports of the first channel and the second channels are arranged on the outer side of the cover body, second ports of the first channel and the second channels are arranged on one side, facing the rotating body, of the cover body, the second port of the first channel is located on the axis, and the second ports of the second channels are circumferentially arranged around the axis;

the rotor can be rotated around the axis under drive arrangement's drive, one side of rotor towards the lid is equipped with switches the recess, the one end of switching the recess is located on the axis and with the second port intercommunication of first passageway, the other end is to keeping away from the direction of axis extends and can communicate with the second port of arbitrary second passageway.

Optionally, the second channels are uniformly circumferentially arranged around the axis and are rotationally symmetric with the axis as a central line.

Optionally, the rotor includes along keeping away from the axis direction of lid fixed connection's contact piece, support piece and connecting axle in proper order, the contact piece towards one side of lid is equipped with switch the recess, the connecting axle is kept away from one side of support piece and is opened be used for with the opening that the drive arrangement drive end is connected.

Further optionally, the lid includes the lid shell, the lid shell towards one side card of rotor be equipped with the lid inside lining, the lid inside lining towards one side of rotor with the contact piece laminating, wherein the first port of first passageway and second passageway set up in on the lid shell, the second port of first passageway and second passageway set up in on the lid inside lining.

Optionally, the rotary part further comprises a shell, and the shell is sleeved outside the rotary part and detachably connected with the cover body.

Further optionally, a plurality of ball bushings are provided between the inner wall of the housing and the outside of the rotor.

Optionally, a supporting seat for pressing the supporting member toward the cover body is disposed on a side of the supporting member away from the cover body, and the supporting seat can move in the casing along the axial direction.

Further optionally, the supporting seat comprises a supporting ring and a supporting spring, the supporting ring and the supporting spring are sleeved outside the connecting shaft, the supporting ring can move in the shell along the axis direction, and two ends of the supporting spring abut against one side of the supporting ring opposite to the supporting piece.

Further optionally, the inner wall of the housing is provided with internal threads distributed along the axial direction, and the outer side of the support ring is provided with external threads matched with the internal threads.

Optionally, a first positioning bump is arranged on the inner wall of the shell, a second positioning bump is arranged on the support member, and the second positioning bump can abut against the first positioning bump in the rotating process.

The utility model has the following advantages and beneficial effects:

according to the multi-channel quick switching device suitable for the automatic water quality detector, the switching groove is driven to rotate through the rotating body, so that the second channel communicated with the first channel is switched, the quick switching of a plurality of channels can be realized through the rotation of the rotating body, and the switching process is simple and reliable. When the automatic water quality monitor is arranged in the automatic water quality monitor, the first ports of the first channel and the second channel are respectively communicated with samples and reagents required for detection, and the collection is completed in a short time through the switching of the channels so as to carry out chemical reaction.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:

FIG. 1 is a plan view of the whole structure of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the entire structure of embodiment 1 of the present invention;

FIG. 3 is a front sectional view of the whole structure of embodiment 1 of the present invention;

fig. 4 is a top view of the contact sheet of example 1 of the present invention.

Reference numbers and corresponding part names in the drawings:

1-cover body, 11-cover body shell, 12-cover body inner liner, 13-first channel, 14-second channel, 2-rotating body, 21-switching groove, 22-contact piece, 23-supporting piece, 24-connecting shaft, 25-second positioning lug, 3-shell body, 31-supporting ring, 32-supporting spring, 33-first positioning lug and 34-ball bush.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the utility model. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.

Example 1:

a multi-channel quick switching device suitable for a water quality automatic detector is shown in figures 1 to 4 and comprises a cover body 1 and a rotating body 2 which are sequentially arranged along the same axis, wherein the opposite sides of the cover body 1 and the rotating body 2 are mutually attached;

a first channel 13 and a plurality of second channels 14 are formed in the cover body 1, first ports of the first channel 13 and the second channel 14 are arranged on the outer side of the cover body 1, second ports of the first channel 13 and the second channel 14 are arranged on one side, facing the rotating body 2, of the cover body 1, wherein the second port of the first channel 13 is located on the axis, and the second port of the second channel 14 is arranged circumferentially around the axis;

rotor 2 can rotate around the axis under drive arrangement's drive, drive arrangement is rotated by control mainboard MCU's control, rotor 2 is equipped with switching recess 21 towards one side of lid 1, the one end of switching recess 21 is located on the axis and with the second port intercommunication of first passageway 13, the other end is to keeping away from the direction of axis extends and can communicate with the second port of arbitrary second passageway 14.

The second port of the first channel 13 is always communicated with one end of the switching groove 21, and the second port of any second channel 14 can be communicated with the other end of the switching groove 21 when the rotating body 2 rotates to the corresponding position respectively, so that the first channel 13 is communicated with the second channel 14. Therefore, the rotating body 2 rotates to realize the quick switching of a plurality of channels, and the switching process is simple and reliable. When the device is applied to the automatic water quality monitor, the first ports of the first channel 13 and the second channel 14 can be respectively communicated with samples and detection reagents required by detection, and the samples can be detected in a short time by switching the channels, so that the content of the relevant elements of the samples can be obtained.

Wherein the first ports of the first and

second channels

13 and 14 may be connected to the fastening joint through female screw holes, and to the respective pipettes through the fastening joint.

In one or more embodiments, the second channels 14 are uniformly circumferentially arranged about the axis and are rotationally symmetric about the axis. At this time, the driving device can be connected with the next second channel 14 every time the driving device rotates by the same angle, so that the accuracy of the rotation of the driving device is improved.

In one or more embodiments, the rotating body 2 includes a contact piece 22, a support piece 23, and a connecting shaft 24 fixedly connected in sequence along an axial direction away from the cover body 1, the switching groove 21 is disposed on one side of the contact piece 22 facing the cover body 1, and an opening for connecting with the driving end of the driving device is opened on one side of the connecting shaft 24 away from the support piece 23.

The driving device can be a stepping motor, a convex block matched with the opening is arranged on the output end of the driving device, and the driving device and the rotating body 2 are driven by the convex block and the opening in a clamping mode.

The support sheet and the support 23 may be connected by bolts, as shown in fig. 4, three corresponding screw holes are respectively provided at the outer sides of the contact sheet 22 and the support 23, and a stud for fixing is inserted therein.

In one or more embodiments, the cover 1 includes a cover shell 11, a cover liner 12 is clamped on a side of the cover shell 11 facing the rotator 2, and a side of the cover liner 12 facing the rotator 2 is attached to the contact piece 22, wherein first ports of the first channel 13 and the second channel 14 are disposed on the cover shell 11, and second ports of the first channel 13 and the second channel 14 are disposed on the cover liner 12.

The material of the contact sheet 22 and the cover liner 12 is preferably polychlorotrifluoroethylene, which is a part of the channel in the switching device, has sufficient corrosion resistance, heat resistance, incombustibility, non-hygroscopicity, and gas impermeability, and can have high stability even when the detection reagent passes through.

In addition, the cover body shell 11 can be made of stainless steel, so that corrosion or rust generation at the first port part can be avoided when the cover body shell is used for a long time.

In one or more embodiments, the portable electronic device further comprises a housing 3, wherein the housing 3 is sleeved outside the rotating body 2 and detachably connected with the cover body 1.

Through the setting of casing 3, right rotor 2 protects, ensures rotor 2's rotation process normal operating, avoids rotor 2 to produce the skew under the influence of external force.

The housing 3 may be a cylindrical structure with two open ends, one open end is used for penetrating the rotor 2, and the other open end is used for penetrating the output end of the driving device, so that the driving device is matched with the opening of the connecting shaft 24.

The connection between the housing 3 and the cover 1 is preferably through a screw, and as shown in fig. 1 to 3, three corresponding screw holes are respectively provided on the housing 3 and the cover 1, and a screw for fixing is inserted therein.

In one or more embodiments, a side of the support member 23 away from the lid body 1 is provided with a support seat for pressing the support member 23 toward the lid body 1, and the support seat can move in the axial direction in the housing 3.

Therefore, by adjusting the axial position of the supporting seat in the housing 3, the supporting force applied to the supporting member 23 can be changed, and the joint strength between the contact piece 22 and the cover body 1 can be adjusted, so that the contact piece 22 and the cover body 1 are tightly jointed, and leakage is avoided.

Further, in one or more embodiments, the supporting seat includes a supporting ring 31 and a supporting spring 32, the supporting ring 31 is sleeved outside the connecting shaft 24, the supporting ring 31 can move in the housing 3 along the axial direction, and two ends of the supporting spring 32 abut against the side of the supporting ring 31 facing the supporting piece 23.

The support spring 32 is disposed between the support ring 31 and the support 23 and is pressed by the support ring 31 and the support 23, so that the axial position of the support ring 31 is adjusted to change the compression amount of the support spring 32 and further change the supporting force applied to the support 23, thereby adjusting the bonding strength between the contact piece 22 and the cover 1. The supporting spring 32 is sleeved outside the connecting shaft 24, so that the uniform distribution of the extrusion force of the supporting spring 32 on the supporting member 23 can be ensured, and the contact piece 22 is prevented from loosening while being tight when being attached to the cover body 1, and leakage is avoided.

Furthermore, in one or more embodiments, the inner wall of the housing 3 is provided with an internal thread distributed along the axial direction, and the outer side of the support ring 31 is provided with an external thread matched with the internal thread. Through the cooperation of the internal thread of casing 3 inner wall and the external thread of supporting seat outside for operating personnel can change the axial position of support ring 31 simply swift through the mode of rotating support ring 31.

Wherein, in one or more embodiments, a plurality of ball bushes 34 are provided between the inner wall of the housing 3 and the outside of the rotor 2. Through the cooperation of ball bush 34 the rotation of rotor 2 is fixed a position rotor 2's axiality simultaneously, avoids its skew, causes the laminating of the side in opposite directions of lid 1 and rotor 2 is not tight, produces and reveals.

Wherein said ball bushing 34 may be arranged between the support ring 31 and the housing 3 as shown in fig. 2-3.

Furthermore, the end of the supporting spring 32 close to the supporting seat can be arranged on a ball bush 34 on the supporting ring 31, rotating together with the rotor 2, ensuring that the supporting spring 32 does not change in compression due to rotation and thus influence its supporting force.

In one or more embodiments, a first positioning protrusion 33 is disposed on an inner wall of the housing 3, and a second positioning protrusion 25 is disposed on the supporting member 23, wherein the second positioning protrusion 25 can abut against the first positioning protrusion 33 during rotation.

The position of the second positioning bump 25 is abutted against the first positioning bump 33 to position the initial point, so that the rotation initial position of the rotor 2 in the control mainboard MCU can be positioned and readjusted by matching the first positioning bump 33 with the second positioning bump 25 when needed, and errors generated in the channel switching process in the long-term use process are reduced.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A multi-channel quick switching device suitable for an automatic water quality detector is characterized by comprising a cover body (1) and a rotating body (2) which are sequentially arranged along the same axis, wherein the opposite sides of the cover body (1) and the rotating body (2) are mutually attached;

a first channel (13) and a plurality of second channels (14) are formed in the cover body (1), first ports of the first channel (13) and the second channels (14) are arranged on the outer side of the cover body (1), second ports of the first channel (13) and the second channels (14) are arranged on one side, facing the rotating body (2), of the cover body (1), wherein the second port of the first channel (13) is located on the axis, and the second port of the second channel (14) is circumferentially arranged around the axis;

rotor (2) can be under drive arrangement's drive around the axis rotation, rotor (2) are equipped with switching recess (21) towards one side of lid (1), the one end that switches recess (21) is located on the axis and with the second port intercommunication of first passageway (13), the other end is to keeping away from the direction of axis extends and can communicate with the second port of arbitrary second passageway (14).

2. The multi-channel quick switching device for the automatic water quality detector is characterized in that the second channels (14) are uniformly and circumferentially arranged around an axis and are rotationally symmetrical by taking the axis as a center line.

3. The multichannel quick switching device suitable for the water quality automatic detector is characterized in that the rotating body (2) comprises a contact piece (22), a support piece (23) and a connecting shaft (24) which are fixedly connected in sequence along the axial direction far away from the cover body (1), the switching groove (21) is formed in one side, facing the cover body (1), of the contact piece (22), and an opening used for being connected with the driving end of the driving device is formed in one side, far away from the support piece (23), of the connecting shaft (24).

4. The multichannel fast switching device suitable for the automatic water quality detector is characterized in that the cover body (1) comprises a cover body outer shell (11), a cover body inner lining (12) is clamped on one side, facing the rotating body (2), of the cover body outer shell (11), one side, facing the rotating body (2), of the cover body inner lining (12) is attached to the contact piece (22), wherein first ports of the first channel (13) and the second channel (14) are arranged on the cover body outer shell (11), and second ports of the first channel (13) and the second channel (14) are arranged on the cover body inner lining (12).

5. The multichannel quick switching device suitable for the automatic water quality detector is characterized by further comprising a shell (3), wherein the shell (3) is sleeved outside the rotating body (2) and detachably connected with the cover body (1).

6. The multi-channel fast switching device for the automatic water quality detecting instrument is characterized in that a plurality of ball bushings (34) are arranged between the inner wall of the shell (3) and the outer side of the rotating body (2).

7. The multi-channel fast switching device for the automatic water quality detecting instrument is characterized in that a supporting seat for pressing the supporting piece (23) towards the cover body (1) is arranged on one side, away from the cover body (1), of the supporting piece (23), and the supporting seat can move in the shell (3) along the axial direction.

8. The multichannel quick switching device suitable for the automatic water quality detector is characterized in that the supporting seat comprises a supporting ring (31) and a supporting spring (32), the supporting ring (31) is sleeved outside the connecting shaft (24), the supporting ring (31) can move in the housing (3) along the axial direction, and two ends of the supporting spring (32) are abutted against one side, facing the supporting ring (31) and the supporting piece (23).

9. The multi-channel quick switching device for the automatic water quality detector is characterized in that inner threads distributed along the axial direction are arranged on the inner wall of the shell (3), and outer threads matched with the inner threads are arranged on the outer side of the support ring (31).

10. The multi-channel quick switching device suitable for the automatic water quality detector is characterized in that a first positioning lug (33) is arranged on the inner wall of the shell (3), a second positioning lug (25) is arranged on the supporting piece (23), and the second positioning lug (25) can abut against the first positioning lug (33) in the rotating process.