CN220063914U

CN220063914U - PH meter

Info

Publication number: CN220063914U
Application number: CN202321572945.1U
Authority: CN
Inventors: 朱嘉贝; 孙芸童; 张语鸽; 周文骏; 彭水英
Original assignee: Chongqing Jiuwu Technology Co ltd
Current assignee: Chongqing Jiuwu Technology Co ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-11-21
Anticipated expiration: 2033-06-20

Abstract

The PH meter comprises a machine body, a bracket, an electrode structure and a shell, wherein the machine body and the bracket relate to the technical field of experimental design; the electrode structure also comprises a control component for controlling the detection end of the electrode body to extend out of the shell and retract into the shell; the control assembly comprises a pressing rod for controlling the electrode body to stretch out and draw back, and the pressing rod is connected with the electrode body. The electrode structure can switch states between the stirring rod and detection through the control assembly, the stirring rod and the electrode do not need to be replaced, the operation time is shortened, and the working efficiency is improved; and the detection end of the electrode can be retracted into the shell, so that the detection end of the electrode is protected when the electrode is empty, foreign objects are prevented from being impacted to the detection end of the electrode, the accuracy of detection data is prevented from being reduced due to the impact of the foreign objects, and the service life of the detection end is prolonged.

Description

PH meter

Technical Field

The utility model relates to the technical field of experimental design, in particular to a PH meter.

Background

In experiments, it is often necessary to test some samples for PH, and in order to be able to accurately measure PH, it is necessary to uniformly distribute PH of the samples.

In the prior art, because the specificity of the detection end of the electrode can not be used as a stirring rod, an experimenter needs to stir a sample by using the stirring rod before using the PH meter to detect data, and then the detection end of the electrode of the PH meter is immersed into the sample to test the PH value, and the electrode of the PH meter is not directly used for stirring the sample. A great deal of time is wasted between the replacement of the stirring rod and the electrode, and the working efficiency is reduced; and when the electrode is empty, the detection end of the electrode is exposed, so that the electrode is easy to be impacted by foreign objects, and the accuracy and the service life of detection data are reduced.

Disclosure of Invention

In order to overcome the defect that a large amount of time is wasted between a stirring rod and an electrode in the prior art, the utility model aims to provide a PH meter.

The technical scheme adopted by the utility model is as follows: the PH meter comprises a machine body, a bracket and an electrode structure, wherein the electrode structure comprises an electrode body and a shell which can be used for stirring and is sleeved outside the electrode body; the electrode structure also comprises a control component for controlling the detection end of the electrode body to extend out of the shell and retract into the shell; the control assembly comprises a pressing rod for controlling the electrode body to be switched in a telescopic state, and the pressing rod is connected with the electrode body.

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

the electrode structure can switch states between the stirring rod and detection through the control assembly, the stirring rod and the electrode do not need to be replaced, the operation time is shortened, and the working efficiency is improved; the detection end of electrode can retract inside the casing, and when the electrode is empty, the casing has played the guard action to the detection end that the casing was inside to the shrink, avoids the foreign object to bump the detection end of electrode and reduces the precision of detection end, has increased the life-span of detection end.

As a preferred embodiment of the present utility model, the pressing rod is disposed at an end of the housing away from the detection end, the pressing rod is disposed along an axis of the electrode body, the pressing rod is connected to an end of the electrode body away from the detection end, one end of the pressing rod is disposed in the housing, and the other end of the pressing rod extends out of the housing.

Through will press the pole setting to be in the casing is kept away from the tip of detection end, the experimenter can be through holding in the use, then presses the pole through the thumb and switches the flexible state of electrode body, accords with the use habit, improves the operation degree of accuracy based on the use habit.

As a preferred embodiment of the utility model, an upper clamping block is arranged on the electrode body, a lower clamping block is arranged on the inner wall of the shell, a plurality of first sliding grooves are circumferentially and equally spaced on the inner wall of the end part of the shell far away from the detection end, a plurality of guiding helical teeth and clamping helical teeth are also arranged on the shell, the guiding helical teeth and the clamping helical teeth are alternately and equally spaced and circumferentially arranged in the shell, and the root parts of the guiding helical teeth are communicated with the first sliding grooves; the control assembly further comprises a rotating wheel and a compression spring, the pressing rod is connected with the electrode body through the rotating wheel, the rotating wheel is provided with a plurality of second sliding blocks, and the second sliding blocks are wedge-shaped towards one end of the pressing rod; the compression spring is sleeved on the electrode body, and two ends of the compression spring are respectively abutted against the upper clamping block and the lower clamping block.

When the detection end is in a state of shrinking into the shell, the second slide block and the first slide block are commonly accommodated in the first slide groove, the slope surface of the wedge-shaped end of the second slide block is in contact with the end part of the sawtooth-shaped bulge, when the pressing rod is pressed, the sawtooth-shaped bulge pushes the wedge-shaped end of the second slide block to enable the second slide block to withdraw from the first slide groove, at the moment, under the action of the compression spring, the wedge-shaped end of the second slide block slides to the connecting part of the adjacent sawtooth-shaped bulge along the sawtooth-shaped bulge, the rotating wheel automatically rotates by a certain angle around the central shaft, the pressing rod is cancelled, under the action of the compression spring, the wedge-shaped end of the second slide block is contacted with the end part of the clamping helical tooth, the wedge-shaped end of the second slide block slides to the root part of the clamping helical tooth along the clamping helical tooth to be in contact with the right-angle side of the clamping helical tooth, and the rotating wheel further automatically rotates by a certain angle around the central shaft, and at the moment, the detecting end is switched to a state extending out of the shell; the slope of the wedge-shaped end of the second sliding block is contacted with the end part of the zigzag protrusion to push the wedge-shaped end of the second sliding block to enable the right-angle edge of the second sliding block to be attached to the clamping helical tooth to withdraw from the clamping helical tooth, the wedge-shaped end of the second sliding block slides to the joint of the adjacent zigzag protrusions along the zigzag protrusion under the action of the compression spring, the rotating wheel automatically rotates by a certain angle around the central shaft to cancel the pressing of the pressing rod, the wedge-shaped end of the second sliding block is contacted with the end part of the guiding helical tooth under the action of the compression spring, the wedge-shaped end of the second sliding block slides into the first sliding groove of the root part of the guiding helical tooth along the guiding helical tooth, the state that the detection end is retracted into the shell is switched to different positions by pressing the pressing rod, and the electrode body telescopic state is switched.

As a preferred embodiment of the utility model, the end of the bracket is provided with a fixing component for vertically clamping and fixing the shell, and the bracket is a height-adjustable bracket.

The support is adjusted to a certain height, then the stirred electrode structure is vertically clamped and fixed on the fixing assembly, and the electrode body is suspended for detection, so that the detection end of the electrode body is prevented from being contacted with a container for containing a sample, and the container is prevented from being contacted with the detection end.

As a preferred embodiment of the present utility model, the fixing component includes a bottom plate and a top plate, the bottom plate is connected with the bracket, a protrusion is provided on the top surface of the bottom plate, a groove for being clamped on the protrusion is provided on the bottom surface of the top plate, and the top plate can rotate around the axis of the protrusion; the top tray is provided with a plurality of grooves for vertically clamping and fixing shells of various sizes.

Because the specifications of the electrode structures for testing different samples are inconsistent, the sizes of the electrode structures are inconsistent, the sizes of the grooves are different, after stirring is finished, the samples are placed below the fixed assembly, the top plate is rotated, and the electrode structures are clamped into the needed grooves, so that the pH value of the samples is detected in a suspended mode. Through the position of rotation recess, make the recess that needs to be used for vertical centre gripping fixed casing rotate to the position that is most distant from the support, avoid the support to the interference of experimenter with electrode structure fixed at recess operation.

As a preferred embodiment of the utility model, the chassis is provided with a sliding block, the end part of the bracket is provided with a second sliding groove which is clamped with the sliding block, the second sliding groove is arranged along the vertical direction, the bottom end of the second sliding groove is closed, and the top end of the second sliding groove is open.

The chassis and the support are arranged to be in sliding fit, after the test is finished, the fixed assembly and the electrode structure are directly soaked and cleaned on the detection end through the vertical whole taking of the opening at the top end of the sliding groove, and then the fixed assembly and the electrode structure are integrally placed on the support through the sliding groove, so that the operation of disassembling and fixing the electrode structure on the fixed assembly again after cleaning is reduced, and the operation efficiency is improved.

Drawings

FIG. 1 is a schematic view of an embodiment of a pH meter according to the present utility model;

FIG. 2 is a front view showing a state in which a detection end of an electrode structure of an embodiment of the PH meter according to the present utility model is retracted into a housing;

FIG. 3 is a cross-sectional view of an electrode structure of an embodiment of the PH meter of the utility model taken along section line A-A;

FIG. 4 is a schematic view of the structure of the fixing assembly of the PH meter according to the embodiment of the utility model.

In the reference numerals: the electrode structure comprises a machine body 1, a support 2, an electrode structure 3, a fixing assembly 4, a second sliding groove 21, an electrode body 31, a shell 32, a chassis 41, a top disc 42, a detection end 311, an upper clamping block 312, a lower clamping block 321, a first sliding groove 322, clamping helical teeth 323, guiding helical teeth 324, a pressing rod 331, a rotating wheel 332, a first sliding block 3311, serrated protrusions 3312 and a second sliding block 3321.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be set forth in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present utility model, the orientation or positional relationship indicated by the terms "first", "second", "one side", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

As shown in fig. 1: a PH meter comprises a machine body 1, a bracket 2 and an electrode structure 3.

As shown in fig. 2-3, the electrode structure 3 includes an electrode body 31 having a detection end 311 and a casing 32 that can be used for stirring and is sleeved outside the electrode body 31, the electrode body 31 is provided with a data line, and the electrode body 31 is provided with an upper clamping block 312; the casing 32 includes an upper casing and a lower casing, the upper casing and the lower casing are connected by threads, a lower clamping block 321 is disposed on the inner wall of the casing 32 below the upper clamping block 312 of the electrode body 31, and the lower clamping block 321 may be disposed on the inner wall of the lower casing; the casing 32 is kept away from the inner wall circumference equidistant distribution of the tip of detection end 311 and is set up a plurality of first spouts 322, casing 32 still is provided with a plurality of direction skewed tooth 324 and block skewed tooth 323, and direction skewed tooth 324 and block skewed tooth 323 alternate equidistant circumference setting are in inside casing 32, wherein the root and the first spout 322 intercommunication of direction skewed tooth 324, direction skewed tooth 324 and block skewed tooth 323 are right triangle-shaped.

The electrode structure 3 further includes a control assembly for controlling the detection end 311 of the electrode body 31 to extend out of the housing 32 and retract into the interior of the housing 32, the control assembly includes a rotating wheel 332, a compression spring, and a pressing rod 331 for controlling the telescopic state of the electrode body 31 to switch, wherein the pressing rod 331 is disposed at an end of the housing 32 far from the detection end 311, the pressing rod 331 is disposed along the axis of the electrode body 31, the pressing rod 331 is connected with an end of the electrode body 31 far from the detection end 311 through the rotating wheel 332, one end of the pressing rod 331 is disposed in the housing 32, and a plurality of mutually connected saw-tooth protrusions 3312 are disposed, the connection between adjacent saw-tooth protrusions 3312 is opposite to the guide bevel 324 and the engagement bevel 323, the pressing rod 331 and the rotating wheel 332 form a pressing rotating wheel structure, the top end of the saw-tooth protrusion 3312 faces the detection end 311, the other end of the pressing rod 331 extends out of the housing 32, and a plurality of first sliding blocks 1 engaged in the first sliding grooves 322 are further disposed; the rotating wheel 332 is provided with a plurality of second sliders 3321, and the second sliders 3321 are provided in a wedge shape toward one end of the pressing rod 331. When the detection end 311 is retracted into the housing 32, the second slide 3321 and the first slide 3311 are jointly accommodated in the first chute 322, the slope of the wedge-shaped end of the second slide 3321 is in contact with the end of the saw-tooth-shaped protrusion 3312, when the pressing rod 331 is pressed, the saw-tooth-shaped protrusion 3312 pushes the wedge-shaped end of the second slide 3321 to enable the second slide 3321 to withdraw from the first chute 322, at this time, under the action of a compression spring, the wedge-shaped end of the second slide 3321 slides to the connecting position of the adjacent saw-tooth-shaped protrusions 3312 along the saw-tooth-shaped protrusion 3312, the rotating wheel 332 automatically rotates by a certain angle around the central shaft, the pressing rod 331 is removed, the wedge-shaped end of the second slide 3321 is in contact with the end of the clamping helical tooth 323 under the action of the compression spring, the wedge-shaped end of the second slide 3321 slides to the root of the clamping helical tooth 323 along the clamping helical tooth 323, the second slide 3321 is in contact with the right-angle edge of the clamping helical tooth 323 at this time, the rotating wheel 332 further automatically rotates by a certain angle around the central shaft, and the rotating wheel 332 only has the first slide 1 in the first chute 322, and the corresponding detection end 311 extends out of the housing 32; continuing to press the pressing rod 331, the slope surface of the wedge-shaped end of the second sliding block 3321 is contacted with the end part of the sawtooth-shaped protrusion 3312 to push the wedge-shaped end of the second sliding block 3321 to enable the right-angle edge of the second sliding block 3321 to be jointed with the clamping helical tooth 323 to withdraw from the clamping helical tooth 323, under the action of a compression spring, the wedge-shaped end of the second sliding block 3321 slides to the joint of the adjacent sawtooth-shaped protrusion 3312 along the sawtooth-shaped protrusion 3312, the rotating wheel 332 automatically rotates around the central shaft by a certain angle, the pressing rod 331 is not pressed, under the action of the compression spring, the wedge-shaped end of the second sliding block 3321 is contacted with the end part of the guiding helical tooth 324, the wedge-shaped end of the second sliding block 3321 slides into the first sliding groove 322 at the root part of the guiding helical tooth 324 along the guiding helical tooth 324, and the detection end 311 is switched to a state of being retracted into the shell 32. As can be seen from the above description, the guiding bevel gear 324 and the engaging bevel gear 323 protrude from the inner wall of the housing 32, and the height of the protruding inner wall of the housing 32 is adapted to the height of the protruding rotating wheel 332 of the second sliding block 3321, so that the wedge-shaped end of the second sliding block 3321 can be engaged with the guiding bevel gear 324 and the engaging bevel gear 323.

The pressing rod 331 and the rotating wheel 332 are hollow, so that the data line of the electrode body 31 can pass through the pressing rod 331 and the rotating wheel 332 to be connected with the machine body 1; the compression spring is sleeved on the electrode body 31, and two ends of the compression spring respectively abut against the upper clamping block 312 and the lower clamping block 321.

As shown in fig. 4, the stand 2 is a height-adjustable stand 2, a fixing component 4 for vertically clamping and fixing the housing 32 is provided at an end of the stand 2, the fixing component 4 includes a bottom plate 41 and a top plate 42, the bottom plate 41 is connected with the stand 2, a protrusion is provided on a top surface of the bottom plate 41, a groove for being clamped on the protrusion is provided on a bottom surface of the top plate 42, and the top plate 42 can rotate around an axis of the protrusion; the top plate 42 is provided with a plurality of grooves for vertically clamping and fixing the various-sized cases 32. The chassis 41 is provided with the sliding block, and the sliding block is "T" type sliding block, the tip of support 2 is provided with the block the second spout 21 of sliding block, second spout 21 sets up along vertical direction, the bottom of second spout 21 is sealed, the open-ended of second spout 21. The section of the second chute 21 is of a "T" shape adapted to a "T" shaped slider.

Detailed description of the preferred embodiments

Before the PH meter is used for detecting the PH value data of the sample in the container, the pressing rod 331 is pressed, the rotating wheel 332 is driven by the pressing rod 331 to press the electrode body 31, so that the state of the electrode body 31 is switched to the state that the detecting end 311 of the electrode body 31 is retracted into the shell 32; stirring the sample in the container by using the shell 32 to ensure that the PH value of the sample in the container is in a uniform state; after stirring, the height of the bracket 2 is adjusted, a sample is placed below the fixed assembly 4, the top disc 42 is rotated, and the position of the groove is rotated, so that the groove required for vertically clamping the fixed shell 32 is rotated to the position farthest from the bracket 2, and the bracket 2 is prevented from interfering the operation of fixing the electrode structure 3 in the groove by an experimenter; the electrode structure 3 is clamped into the groove, the pressing rod 331 is pressed, the state of the electrode body 31 is switched to the state that the detection end 311 of the electrode body 31 extends out of the shell 32, and the detection end 311 is suspended and immersed into the sample to detect the PH value of the sample. The fixed assembly 4 and the electrode structure 3 are vertically and integrally taken through the opening at the top end of the sliding chute to soak and clean the detection end 311, then the fixed assembly 4 and the electrode structure 3 are integrally placed on the support 2 through the sliding chute, and the pressing rod 331 is pressed to switch the state of the electrode body 31 to the state that the detection end 311 of the electrode body 31 is retracted into the inner state of the shell 32.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. A PH meter comprising a body and a support, characterized in that: the electrode structure comprises an electrode body and a shell which can be used for stirring and is sleeved outside the electrode body; the electrode structure also comprises a control component for controlling the detection end of the electrode body to extend out of the shell and retract into the shell; the control assembly comprises a pressing rod for controlling the electrode body to be switched in a telescopic state, and the pressing rod is connected with the electrode body.

2. The PH meter of claim 1, wherein: the pressing rod is arranged at the end part of the shell away from the detection end, the pressing rod is arranged along the axis of the electrode body, the pressing rod is connected with the end of the electrode body away from the detection end, one end of the pressing rod is arranged in the shell, and the other end of the pressing rod extends out of the shell.

3. The PH meter of claim 2, wherein: the electrode body is provided with an upper clamping block, the inner wall of the shell is provided with a lower clamping block, a plurality of first sliding grooves are circumferentially and equally spaced on the inner wall of the end part of the shell, which is far away from the detection end, the shell is also provided with a plurality of guiding helical teeth and clamping helical teeth, the guiding helical teeth and the clamping helical teeth are alternately and equally spaced and circumferentially arranged in the shell, and the root parts of the guiding helical teeth are communicated with the first sliding grooves; the control assembly further comprises a rotating wheel and a compression spring, the pressing rod is connected with the electrode body through the rotating wheel, the rotating wheel is provided with a plurality of second sliding blocks, and the second sliding blocks are wedge-shaped towards one end of the pressing rod; the compression spring is sleeved on the electrode body, and two ends of the compression spring are respectively abutted against the upper clamping block and the lower clamping block.

4. The PH meter of claim 1, wherein: the end of the support is provided with a fixing component for vertically clamping and fixing the shell, and the support is a height-adjustable support.

5. The PH meter of claim 4, wherein: the fixing assembly comprises a base plate and a top plate, the base plate is connected with the bracket, a protrusion is arranged on the top surface of the base plate, a groove used for being clamped on the protrusion is arranged on the bottom surface of the top plate, and the top plate can rotate around the protruding shaft; the top tray is provided with a plurality of grooves for vertically clamping and fixing shells of various sizes.

6. The PH meter of claim 5, wherein: the chassis is provided with the sliding block, the tip of support is provided with the block the second spout of sliding block, the second spout sets up along vertical direction, the bottom of second spout is sealed, the open-ended of second spout.