Conductivity meter

Abstract

The utility model provides a conductivity meter, which relates to the technical field of detection instruments, and comprises a shell, an electrode lead and an electrode support, the electrode support comprises a first support rod, a hinged shaft block, a second support rod, an electrode clamp and a conductive electrode, and the first support rod and the second support rod are provided with positioning wire slots. A sliding wheel set and a positioning wheel set are installed in the positioning wire groove, the sliding wheel set comprises a sliding shell, a guide sliding rod, a reset spring, a sliding seat and a sliding guide wheel, the guide sliding rod is arranged in the sliding shell in a sliding and penetrating mode, and the positioning wheel set comprises a positioning shaft rod, a positioning guide wheel and a locking cam. A transverse sliding rail is arranged on the bottom wall of the positioning wire groove, a locking block is arranged at the end of the positioning sliding rail, and the locking cam abuts against the locking block. According to the utility model, the condition of poor contact of the electrode wire which affects the top of the upper conductive electrode due to adjustment of the motor bracket can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of detection instrument, concretely is a kind of conductivity meter. BACKGROUND

[0002] Conductivity meter is a kind of equipment specially used to measure the current transmission capacity between liquid medium, its working principle is to determine the conductivity of electrolyte solution by electrochemical measurement method, two parallel electrode plates are placed in the solution to be measured, a certain electric potential is applied and the current flowing between electrode plates is measured, according to Ohm's law, the conductivity is calculated by known electrode constant and measured solution resistance or conductivity.

[0003] The existing conductivity meter usually includes shell and electrode support connected on shell, and electrode support is set as first support rod and second support rod hinged to each other, and hinge shaft is arranged between first support rod and second support rod. In order to avoid the influence of messy electrode wire on test operation, electrode lead is usually connected on shell and fixed in wire slot on first support rod and second support rod, and electrode lead is wound on hinge shaft in middle part, and the length of electrode lead wound on hinge shaft will change in the process of adjusting the angle of first support rod and second support rod, so electrode lead will be pulled, and then the contact between conductive electrode and electrode lead is poor, which affects the accuracy of detection. UTILITY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the deficiencies of prior art, the utility model provides a conductivity meter, which solves the problems proposed in the above background.

[0006] (II) technical scheme

[0007] To achieve the above object, the utility model is realized by the following technical scheme:

[0008] The utility model provides a conductivity appearance, including the electrode lead wire of shell and electrode, the side wall of shell is fixedly installed with the mounting seat, the top rotationally connected with electrode support of mounting seat, electrode support includes first support, hinge shaft piece, second support and electrode clamp, the lower end of first support is hinged on mounting seat, hinge shaft piece is hinged between first support and second support, and the electrode clamp is hinged on the one end of second support away from hinge shaft assembly, and the electrode clamp is installed with the conductive electrode, is set with the slipper group and the positioning wheel group in the positioning line groove of first support and second support, and the electrode lead wire is sequentially wound over hinge shaft piece, slipper group and positioning wheel group and is connected on the conductive electrode, and the slipper group includes slipper shell, guide slide bar, reset spring, slipper seat and slipper guide wheel, the slipper shell is fixedly installed in the positioning line groove, the guide slide bar is slid through in the slipper shell, the reset spring is connected between the guide slide bar and the slipper shell, the slipper seat is fixed on the one end of guide slide bar towards hinge shaft piece, the slipper shaft rod is rotatably connected on the slipper seat, and the slipper guide wheel is fixed on the slipper shaft rod, and the electrode lead wire is wound on the slipper guide wheel.

[0009] Preferably, the positioning wheel group includes a positioning shaft, a positioning guide wheel, and a locking cam, a transverse slide rail is arranged on the bottom wall of the positioning line groove, the positioning shaft is slidably installed on the transverse slide rail, the positioning guide wheel and the locking cam are fixed on the positioning shaft, the electrode lead wire is wound on the positioning guide wheel, and end portions of the positioning slide rail are provided with locking blocks, and the locking cam abuts against the locking blocks.

[0010] Preferably, a transverse slide rod is slidably arranged on the locking block, an end portion of the transverse slide rod is fixed with a guide shaft support, a locking spring is connected between the guide shaft support and the locking block, and the positioning shaft is rotatably connected through the guide shaft support.

[0011] Preferably, hinge shaft holes are arranged on the front and back sides of the hinge shaft piece, hinge shaft bolts are rotatably connected in the hinge shaft holes, hinge shaft nuts are fixedly installed on the first support and the second support, and the hinge shaft bolts pass through the first support and the hinge shaft piece and are connected to the hinge shaft nuts.

[0012] Preferably, a wire groove is arranged on the outer side wall of the hinge shaft piece, and a wire clamp is arranged in the wire groove, and the electrode lead wire is clamped on the wire clamp.

[0013] (Three) beneficial effects

[0014] The utility model provides a conductivity appearance. Has the following beneficial effects:

[0015] 1. The electrode lead is wound on the sliding wheel set and the positioning wheel set in the utility model, when the first supporting rod, the hinge shaft block and the second supporting rod are rotated to adjust the position of the conductive electrode, the electrode lead pulls the sliding guide wheel to extrude the return spring to provide displacement for the electrode lead length required in the bending state of the electrode support, which avoids the electrode lead pulling the electrode lead on the top of the conductive electrode, causing the poor contact between the conductive electrode and the electrode lead.

[0016] 2. When the electrode lead has a pulling trend, the electrode lead drives the positioning guide wheel and the locking cam to rotate as a whole, the positioning guide wheel slides towards the positioning line groove direction through the resistance of the locking block by the locking cam, so as to clamp and lock the electrode lead on one side of the conductive electrode, avoiding the influence of the electrode lead on the electrode lead on the conductive electrode in the pulling state. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the electric conductivity instrument of the utility model;

[0018] Figure 2 It is a structural schematic view of the second supporting rod in the utility model;

[0019] Figure 3 It is Figure 2 the local enlarged view of A in the utility model;

[0020] Figure 4 It is a sectional view of the second supporting rod in the utility model Figure 1 ;

[0021] Figure 5 It is a sectional view of the second supporting rod in the utility model Figure 2 .

[0022] In the drawing: 1, shell; 2, mounting seat; 3, first supporting rod; 4, hinge shaft block; 5, second supporting rod; 6, electrode clamp; 7, positioning line groove; 8, hinge shaft bolt; 9, hinge shaft nut; 10, conductive electrode; 11, sliding shell; 12, guide sliding rod; 13, return spring; 14, sliding seat; 15, sliding guide wheel; 16, limiting ring; 17, sliding shaft; 18, positioning shaft; 19, positioning guide wheel; 20, locking cam; 21, transverse sliding rail; 22, locking block; 23, transverse sliding rod; 24, locking spring; 25, guide shaft support. DETAILED DESCRIPTION

[0023] The technical scheme in the utility model embodiment will be clearly and completely described in combination with the drawings in the utility model embodiment.

[0024] The utility model embodiment provides a kind of electric conductivity instrument, such as Figures 1-5As shown, including the shell 1 and electrode lead, the side wall of the shell 1 is fixedly installed with a mounting seat 2, the top of the mounting seat 2 is rotatably connected with an electrode support, the electrode support includes a first support rod 3, a hinge shaft block 4, a second support rod 5 and an electrode clamp 6, a conductive electrode 10 is installed on the electrode clamp 6, the electrode clamp 6 is hinged at one end of the second support rod 5 away from the hinge shaft assembly, one end of the electrode lead is connected to the shell 1, the other end is connected to the top end of the conductive electrode 10, the middle part of the electrode lead is sequentially wound on the first support rod 3, the hinge shaft block 4 and the second support rod 5, the top of the mounting seat 2 is provided with a hinge groove, the two sides of the hinge groove are integrally formed with hinge pieces, the lower end of the first support rod 3 is integrally formed with a centering piece and a clamping piece, a rotating shaft is connected between the centering piece and the clamping piece, and the rotating shaft is rotatably connected to the hinge piece.

[0025] As shown in Figure 1 , the hinge shaft block 4 is hinged between the first support rod 3 and the second support rod 5, the outer side wall of the hinge shaft block 4 is provided with a wire groove, the wire groove is provided with a wire clamp, the electrode lead is clamped on the wire clamp, the front and rear sides of the hinge shaft block 4 are provided with hinge shaft holes, the hinge shaft holes are rotatably connected with hinge shaft bolts 8, the first support rod 3 and the second support rod 5 are fixedly installed with hinge shaft nuts 9, the hinge shaft bolts 8 pass through the first support rod 3 and the hinge shaft block 4 and are connected to the hinge shaft nuts 9, the hinge shaft bolts 8 are threadedly connected with the hinge shaft nuts 9, rotating the hinge shaft bolts 8 can be separated from the hinge shaft nuts 9, the first support rod 3, the second support rod 5 and the hinge shaft block 4 can be loosened in the axial direction, in the unlocked state, the first support rod 3 and the second support rod 5 can be freely rotated and adjusted, and the first support rod 3, the second support rod 5 and the hinge shaft block 4 can be clamped and fixed, so that the conductive electrode 10 can be kept at any angle position.

[0026] As shown in Figures 1-2 , the first support rod 3 and the second support rod 5 are provided with a positioning wire groove 7, the positioning wire groove 7 is installed with a sliding wheel set and a positioning wheel set, the electrode lead sequentially passes through the hinge shaft block 4, the sliding wheel set and the positioning wheel set and is connected to the conductive electrode 10.

[0027] As shown in Figures 2-3As shown in the figure, the sliding wheel set comprises a sliding shell 11, a guide sliding rod 12, a reset spring 13, a sliding seat 14 and a sliding guide wheel 15, the sliding shell 11 is fixedly installed in the positioning wire slot 7, an internal telescopic slot is formed in the sliding shell 11, a sliding hole is formed in the side wall of the telescopic slot, the guide sliding rod 12 is slidably arranged in the sliding hole, a limiting ring 16 is arranged at the end of the guide sliding rod 12, the reset spring 13 is connected between the limiting ring 16 and the inner wall of the sliding shell 11, the sliding seat 14 is fixed at one end of the guide sliding rod 12 towards the hinge shaft block 4, the sliding shaft rod 17 is rotatably connected to the sliding seat 14, the sliding guide wheel 15 is fixed on the sliding shaft rod 17, the sliding guide wheel 15 and the inner wall of the positioning wire slot 7 are provided with a threading gap for placing the electrode wire on the sliding guide wheel 15, and the electrode wire is wound on the sliding guide wheel 15.

[0028] As shown in the figure, Figure 2 , Figure 3 , Figure 5 As shown in the figure, the positioning wheel set comprises a positioning shaft rod 18, a positioning guide wheel 19 and a locking cam 20, the bottom wall of the positioning wire slot 7 is provided with a transverse sliding rail 21, the end of the positioning sliding rail is provided with a locking block 22, the locking block 22 is provided with a transverse sliding hole, the transverse sliding rod 23 is slidably arranged in the transverse sliding hole, the end of the transverse sliding rod 23 is provided with a guide shaft support 25, the locking spring 24 is connected between the guide shaft support 25 and the locking block 22, the positioning shaft rod 18 is rotatably connected to the guide shaft support 25, the guide sliding block is installed on the transverse sliding rail 21, the positioning shaft rod 18 is rotatably connected to the guide sliding block, the positioning guide wheel 19 is fixed on the top of the positioning shaft rod 18, the locking cam 20 is fixed on the lower part of the positioning shaft rod 18, the outer edge of the locking cam 20 abuts against the side wall of the locking block 22, the electrode wire is wound on the positioning guide wheel 19, when the electrode wire is pulled towards one side of the hinge shaft block 4, the electrode wire will pull the positioning guide wheel 19 to rotate on the guide shaft support 25, and the locking cam 20 always abuts against the locking block 22 in the rotating process, and the rotation of the locking cam 20 will make the positioning shaft rod 18 slide along the transverse sliding rail 21 towards the side wall of the positioning wire slot 7, so as to clamp and lock the electrode wire on the side wall of the positioning wire slot 7, and the electrode wire on one side of the conductive electrode 10 will not be affected when the electrode wire is pulled.

[0029] Working principle:

[0030] In the utility model, the electrode wire is wound on the first supporting rod 3, the hinge shaft block 4 and the second supporting rod 5, when the angle of the first supporting rod 3 and the second supporting rod 5 is adjusted, the conductive electrode 10 can be adjusted to any position, the conductivity detection operation is facilitated, the angle between the first supporting rod 3 and the second supporting rod 5 is rotated, the length of the arc surface outside the hinge shaft block 4 hinged part can be changed, at this time, the electrode wire is pulled to provide the required length;

[0031] In the natural state, under the pulling action of the reset spring 13, the electrode wire wound on the sliding guide wheel 15 and the positioning guide wheel 19 will form a bent Z-shaped state, when the electrode wire is pulled, the friction between the electrode wire and the sliding guide wheel 15 will pull the sliding guide wheel 15 to slide towards the direction of the hinge block 4, the Z-shaped electrode wire is pulled flat and straight, providing the required electrode wire length, avoiding rigid pulling on the electrode wire at the top of the conductive electrode 10, and avoiding poor contact between the conductive electrode 10 and the electrode wire;

[0032] At the same time, the friction between the electrode wire and the positioning guide wheel 19 will pull the positioning guide wheel 19 to rotate, so as to drive the locking cam 20 on the positioning shaft 18 to rotate synchronously, the outer edge of the locking cam 20 rotates and abuts against the locking block 22 to push the guide shaft frame 25 to drive the positioning shaft 18 to slide on the transverse sliding rail 21 towards one side of the side wall of the positioning wire groove 7, so as to push the positioning guide wheel 19 to clamp the electrode wire, and lock the electrode wire between the positioning guide wheel 19 and the top of the conductive electrode 10, so that the electrode wire at the top of the conductive electrode 10 will not be affected when the electrode wire is pulled.

[0033] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A conductivity meter comprising a housing and an electrode lead, characterized in that: The side wall of the shell is fixedly provided with a mounting seat, the top of the mounting seat is rotationally connected with an electrode support, the electrode support comprises a first support rod, a hinge shaft block, a second support rod and an electrode clamp, the lower end of the first support rod is hingedly connected to the mounting seat, the hinge shaft block is hingedly connected between the first support rod and the second support rod, the electrode clamp is hingedly connected to the end of the second support rod away from the hinge shaft assembly, a conductive electrode is mounted on the electrode clamp, positioning line grooves are formed in the first support rod and the second support rod, sliding wheel sets and positioning wheel sets are mounted in the positioning line grooves, the electrode lead wire is sequentially wound around the hinge shaft block, the sliding wheel sets and the positioning wheel sets and is connected to the conductive electrode, the sliding wheel set comprises a sliding shell, a guide sliding rod, a return spring, a sliding seat and a sliding guide wheel, the sliding shell is fixedly mounted in the positioning line groove, the guide sliding rod is slidably arranged in the sliding shell, the return spring is connected between the guide sliding rod and the sliding shell, the sliding seat is fixed to the end of the guide sliding rod facing the hinge shaft block, a sliding shaft rod is rotationally connected to the sliding seat, the sliding guide wheel is fixed to the sliding shaft rod, and the electrode lead wire is wound around the sliding guide wheel.

2. The conductivity meter of claim 1, wherein: The positioning wheel set comprises a positioning shaft rod, a positioning guide wheel and a locking cam, the bottom wall of the positioning line groove is provided with a transverse sliding rail, the positioning shaft rod is slidably mounted on the transverse sliding rail, the positioning guide wheel and the locking cam are fixed to the positioning shaft rod, the electrode lead wire is wound around the positioning guide wheel, and the end of the transverse sliding rail is provided with a locking block, the locking cam abuts against the locking block.

3. A conductivity meter according to claim 2, characterised in that: A transverse sliding rod is slidably arranged on the locking block, the end of the transverse sliding rod is fixedly provided with a guide shaft support, a locking spring is connected between the guide shaft support and the locking block, and the positioning shaft rod is rotationally connected to the guide shaft support.

4. A conductivity meter according to claim 3, characterised in that: Hinge shaft holes are formed in the front and rear sides of the hinge shaft block, hinge shaft bolts are rotationally connected to the hinge shaft holes, hinge shaft nuts are fixedly mounted on the first support rod and the second support rod, and the hinge shaft bolts are connected to the hinge shaft nuts by penetrating the first support rod and the hinge shaft block.

5. A conductivity meter according to claim 4, characterised in that: A line groove is formed in the outer side wall of the hinge shaft block, a wire clamp is arranged in the line groove, and the electrode lead wire is clamped to the wire clamp.

Images