CN211852949U

CN211852949U - Electric switching valve for chromatograph

Info

Publication number: CN211852949U
Application number: CN202020482226.0U
Authority: CN
Inventors: 田隆伟
Original assignee: Chongqing Jinyi Technology Co ltd
Current assignee: Chongqing Jinyi Technology Co ltd
Priority date: 2020-04-06
Filing date: 2020-04-06
Publication date: 2020-11-03
Anticipated expiration: 2030-04-06

Abstract

The utility model relates to the technical field of chromatograph assembly parts, in particular to an electric switching valve for a chromatograph, which comprises a protective cover and a base arranged in the protective cover, wherein the front end surface of the protective cover is provided with a first groove, the front end surface of the base is provided with a second groove, an integrated circuit board is arranged on the bottom wall of one end part of the base, the bottom wall of the other end part of the base is provided with a supporting frame, a stepping motor is also arranged above the integrated circuit board, and the tail end of an output shaft of the stepping motor is also provided with a valve body; still be provided with the card line device in the support frame, the card line device is provided with a plurality of fixture blocks that are linear equidistant range including setting up the fixed plate between two vertical section plate bodies of support frame on the fixed plate. The utility model is simple in operation, also be convenient for simultaneously lay wire the operation, offer convenience for the user.

Description

Electric switching valve for chromatograph

Technical Field

The utility model relates to a zero technical field of chromatograph assembly, specifically speaking relates to an electric changeover valve for chromatograph.

Background

The chromatograph is the equipment of carrying out chromatographic fractionation analysis usefulness, generally installs corresponding diverter valve in the chromatograph for switch the valve plate, but conventional diverter valve is when using, and it does not rely on step motor work to realize switching, and then causes its operation process more loaded down with trivial details, has brought more inconvenience for the user.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic diverter valve for chromatograph to solve certain or some defects that propose in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an electric switching valve for a chromatograph comprises a protective cover and a base arranged in the protective cover, wherein a first groove is arranged on the front end face of the protective cover, a second groove is arranged on the front end face of the base, an integrated circuit board is arranged on the bottom wall of one end part of the base, a support frame is arranged on the bottom wall of the other end part of the base, the cross section of the support frame is U-shaped, shaft holes communicated with the outside are formed in two vertical section plates of the support frame, a stepping motor is further arranged above the integrated circuit board, a fixed base on the stepping motor is fixedly arranged on the support frame, an output shaft of the stepping motor penetrates through one of the shaft holes, a valve body is further arranged at the tail end of the output shaft of the stepping motor, one end part of the valve body penetrates through the other shaft hole and is fixedly arranged on the output shaft, the other end of the valve body passes through the first groove and the second groove and is positioned outside the protective cover.

Preferably, still be provided with a plurality of linear equidistant range and the radiating groove that is linked together with the external world on the rear end casing of safety cover, the heat in the safety cover of being convenient for is in time outwards dispelled.

Preferably, still be provided with the card line device in the support frame, the card line device is including setting up fixed plate between two vertical section plate bodies of support frame, be provided with a plurality of fixture blocks that are linear equidistant range on the fixed plate, guarantee when using, can fix the wire, avoid intertwining between the wire.

Preferably, the clamping grooves which are symmetrical to each other are formed in the two vertical section plate bodies of the supporting frame, the clamping rods are arranged at the positions of the clamping grooves on the fixing plate, and the clamping rods correspond to the clamping grooves, so that the fixing plate can be conveniently mounted and dismounted.

Preferably, still be provided with a plurality of first ring channels that are linear equidistant range in the fixed plate, be provided with the second ring channel on the diapire of first ring channel, integrated into one piece has the projection on the bottom surface of fixture block, the projection inserts extremely in the first ring channel, the bottom integrated into one piece of projection has the spacing dish, spacing dish is located in the second ring channel, the orientation of convenient adjustment fixture block brings the facility for the user.

Preferably, the convex column and the surface of the limiting disc are both provided with anti-slip layers, and the anti-slip layers are in interference fit with the groove wall of the first annular groove and the groove wall of the second annular groove, so that the convex column cannot easily rotate under the action of no external force.

Preferably, the inner diameter of the second annular groove is larger than that of the first annular groove, and the size of the limiting disc is matched with that of the second annular groove, so that the limiting disc cannot be separated from the second annular groove and enter the first annular groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a step motor who sets up guarantees when using, utilizes the output shaft on the step motor to rotate, can drive the valve body and rotate, further realizes every position that corresponds the screw hole on the adjustment valve body terminal surface, finally realizes switching the valve plate of installing on the valve body, facilitates the use, solved conventional diverter valve when using, it does not rely on step motor work to realize switching, and then causes its operation process more loaded down with trivial details, brought more inconvenient problem for the user.

2. The utility model discloses a card line device that sets up guarantees when using, can arrange in order and fix the wire, reduces intertwine between the wire, conveniently overhauls the operation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a rear view of the protective cover of the present invention;

FIG. 4 is a schematic structural view of the support frame and the wire clamping device of the present invention;

fig. 5 is an exploded view of the wire clamping device of the present invention.

In the figure: 1. a protective cover; 10. a first groove; 101. a heat sink; 11. a base; 111. a second groove; 12. an integrated circuit board; 13. a support frame; 131. a shaft hole; 132. a card slot; 14. a stepping motor; 15. a valve body; 2. a wire clamping device; 20. a fixing plate; 21. a clamping rod; 22. a first annular groove; 221. a second annular groove; 23. a clamping block; 231. a convex column; 232. a limiting disc; 24. and an anti-slip layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-5, the present invention provides a technical solution:

an electric switching valve for a chromatograph comprises a protective cover 1 and a base 11 arranged in the protective cover 1, wherein corresponding threaded holes are formed in the base 11 and the protective cover 1, and the base 11 is fixedly arranged on the protective cover 1 by using fastening screws, so that the base 11 and the protective cover 1 can be conveniently installed and detached;

specifically, a first groove 10 is formed in the front end face of the protective cover 1, a second groove 111 is formed in the front end face of the base 11, an integrated circuit board 12 is fixedly mounted on the bottom wall of one end portion of the base 11 through a plurality of fastening screws, a support frame 13 is fixedly mounted on the bottom wall of the other end portion of the base 11 through a plurality of fastening screws, the cross section of the support frame 13 is in a U shape, shaft holes 131 communicated with the outside are formed in two vertical section boards of the support frame 13, the positions of the two shaft holes 131 are opposite to each other, a stepping motor 14 is further arranged above the integrated circuit board 12, a fixing base on the stepping motor 14 is fixedly mounted on the support frame 13, corresponding threaded holes are formed in the fixing base on the stepping motor 14 and in the support frame 13, and then the fixing base on the stepping motor 14 is fixedly mounted on; the output shaft of the stepping motor 14 passes through one of the shaft holes 131, the tail end of the output shaft of the stepping motor 14 is also provided with a valve body 15, one end part of the valve body 15 passes through the other shaft hole 131 and is tightly welded on the output shaft of the stepping motor 14, and the other end part of the valve body 15 passes through the first groove 10 and the second groove 111 and is positioned outside the protective cover 1.

In this embodiment, the rear end portion of the protection cover 1 is further provided with a plurality of heat dissipation grooves 101 which are linearly arranged at equal intervals and are communicated with the outside, so that heat in the protection cover 1 can be dissipated outwards in time.

Specifically, the wire clamping device 2 is further arranged in the support frame 13, the wire clamping device 2 comprises a fixing plate 20 arranged between two vertical section plate bodies of the support frame 13, and a plurality of clamping blocks 23 which are linearly arranged at equal intervals are arranged on the fixing plate 20, so that when the wire clamping device is used, wires can be fixed, and the wires are prevented from being wound; all be provided with the draw-in groove 132 of controlling two mutual symmetries in two vertical section boards of support frame 13, just there is kelly 21 to the position department integrated into one piece of draw-in groove 132 on the fixed plate 20, the joint cooperation between kelly 21 and the draw-in groove 132 that corresponds with it, be convenient for install and dismantle fixed plate 20, and kelly 21 adopts rubber materials to make, guarantee that kelly 21 has certain elasticity, can take place deformation, conveniently go into draw-in groove 132 with kelly 21 card in or follow draw-in groove 132 and take out.

Further, still be provided with a plurality of first ring channels 22 that are linear equidistant range and are linked together with the external world in the fixed plate 20, be provided with second annular groove 221 on the diapire of first ring channel 22, integrated into one piece has projection 231 on the bottom surface of fixture block 23, projection 231 inserts to first ring channel 22 in, the bottom integrated into one piece of projection 231 has spacing dish 232, spacing dish 232 is located second annular groove 221, projection 231 and spacing dish 232 homoenergetic free rotation, conveniently adjust fixture block 23's orientation, it is more smooth to make the operation of laying wire, bring the facility for the user.

In addition, the surfaces of the protruding column 231 and the limiting disc 232 are both provided with an anti-slip layer 24, and the anti-slip layer 24 is in interference fit with the groove wall of the first annular groove 22 and the groove wall of the second annular groove 221, so that the protruding column 231 cannot easily rotate under the action of no external force.

It should be noted that the inner diameter of the second annular groove 221 is larger than the inner diameter of the first annular groove 22, and the size of the limiting disk 232 is matched with the size of the second annular groove 221, so as to ensure that the limiting disk 232 cannot be separated from the second annular groove 221 and enter the first annular groove 22.

Notably, the stepping motor 14 may be a GMP36M545 series stepping motor; furthermore, the utility model discloses in relate to circuit and electronic components and module be prior art, the technical staff in the field can realize completely, no longer gives unnecessary details here, the utility model discloses the content of protection also does not relate to the improvement to software and method.

The utility model discloses an electric changeover valve for chromatograph is when using, switch on external power supply and make its work with step motor 14, output shaft rotation above that drives valve body 15 and rotates, further realize the position that corresponds the screw hole on the adjusting valve body 15, finally realize adjusting a plurality of positions of installing the valve plate on valve body 15, accomplish the switching of valve plate, and convenient operation has solved conventional diverter valve when using, it does not rely on step motor work to realize switching, and then causes its operation process more loaded down with trivial details, more inconvenient problem has been brought for the user.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electric switching valve for a chromatograph, characterized by: the protective cover comprises a protective cover (1) and a base (11) arranged inside the protective cover (1), wherein a first groove (10) is formed in the front end face of the protective cover (1), a second groove (111) is formed in the front end face of the base (11), an integrated circuit board (12) is arranged on one end bottom wall of the base (11), a support frame (13) is arranged on the other end bottom wall of the base (11), the cross section of the support frame (13) is U-shaped, shaft holes (131) communicated with the outside are formed in two vertical section boards of the support frame (13), a stepping motor (14) is further arranged above the integrated circuit board (12), a fixed base on the stepping motor (14) is fixedly arranged on the support frame (13), and an output shaft of the stepping motor (14) penetrates through one of the shaft holes (131), the tail end of an output shaft of the stepping motor (14) is further provided with a valve body (15), one end portion of the valve body (15) penetrates through the other shaft hole (131) and is fixedly mounted on the output shaft of the stepping motor (14), and the other end portion of the valve body (15) penetrates through the first groove (10) and the second groove (111) and is located outside the protective cover (1).

2. The electrically operated switching valve for chromatograph of claim 1, characterized in that: the rear end shell of the protective cover (1) is also provided with a plurality of heat dissipation grooves (101) which are linearly arranged at equal intervals and communicated with the outside.

3. The electrically operated switching valve for chromatograph of claim 1, characterized in that: still be provided with card line device (2) in support frame (13), card line device (2) are including setting up fixed plate (20) between two vertical section plate bodies of support frame (13), be provided with a plurality of fixture blocks (23) that are linear equidistant range on fixed plate (20).

4. The electrically operated switching valve for chromatograph of claim 3, characterized in that: all be provided with draw-in groove (132) of controlling two mutual symmetries in two vertical section plat bodies of support frame (13), it is just right on fixed plate (20) the position department of draw-in groove (132) is provided with kelly (21), kelly (21) and correspond with it joint cooperation between draw-in groove (132).

5. The electrically operated switching valve for chromatograph of claim 3, characterized in that: still be provided with a plurality of first ring channels (22) that are linear equidistant range in fixed plate (20), be provided with second ring channel (221) on the diapire of first ring channel (22), integrated into one piece has projection (231) on the bottom surface of fixture block (23), projection (231) insert extremely in first ring channel (22), the bottom integrated into one piece of projection (231) has spacing dish (232), spacing dish (232) are located in second ring channel (221).

6. The electrically operated switching valve for chromatograph of claim 5, characterized in that: the surface of the convex column (231) and the surface of the limiting disc (232) are both provided with anti-slip layers (24), and the anti-slip layers (24) are in interference fit with the groove wall of the first annular groove (22) and the groove wall of the second annular groove (221).

7. The electrically operated switching valve for chromatograph of claim 5, characterized in that: the inner diameter of the second annular groove (221) is larger than that of the first annular groove (22), and the size of the limiting disc (232) is matched with that of the second annular groove (221).