CN220251888U

CN220251888U - Portable pH meter and support frame for same

Info

Publication number: CN220251888U
Application number: CN202321544010.2U
Authority: CN
Inventors: 宋侠侠; 姜孝明; 花海莹; 李晓慧; 朱盼
Original assignee: Shenzhen Letu Nanke Gene Medicine Co ltd
Current assignee: Shenzhen Letu Nanke Gene Medicine Co ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2023-12-26
Anticipated expiration: 2033-06-16

Abstract

The utility model relates to accessories for a portable pH meter, in particular to a support frame for the portable pH meter. A support rack for a portable pH meter, comprising: a retractable support rod; the driving seat is sleeved on the supporting rod and can move along the axis of the supporting rod; the control handle is fixed at the bottommost end of the supporting rod; the bearing arm is provided with a clamping end and a hinging end, and the clamping end is provided with an electrode clamping seat; the hinged end is hinged to the top of the supporting rod so as to realize swinging, and the swinging axis is perpendicular to the axis of the supporting rod; the bearing arm is provided with an unfolding position and a folding position; the two ends of the connecting rod are respectively hinged with the driving seat and the bearing arm, and the connecting rod, the supporting rod, the driving seat, the control handle and the bearing arm are linked through an automatic umbrella opening and closing mechanism so as to realize the expansion and the folding of the bearing arm; and the base is connected to the bottom end of the control handle and used for supporting the control handle on the bearing substrate. The utility model mainly solves the technical problem of inconvenient operation of the portable pH meter.

Description

Portable pH meter and support frame for same

Technical Field

The utility model relates to accessories for a portable pH meter, in particular to a support frame for the portable pH meter.

Background

The pH meter is also called an acid-base meter, and is an instrument for potentiometrically measuring the pH value of a solution by using a pH indicating electrode. The detection principle of the pH meter is as follows: the pH indicating electrode (such as a pH glass electrode) and the reference electrode (such as a saturated calomel electrode) are immersed in the solution to form a measurement cell, and the potential of the pH indicating electrode can be changed along with the change of the pH value of the solution.

The pH meter can be divided into a pen-type acid-base meter, a portable acid-base meter, a laboratory acid-base meter and an industrial acid-base meter according to the application occasions. The pen-type acid-base meter is mainly used for replacing the function of acid-base test paper, has lower precision, and is convenient to use; the portable acid-base meter is mainly used for field and field measurement, has higher precision and more perfect functions, generally comprises a host, a detection electrode, a cable and the like, wherein the detection electrode comprises a handle and an electrode element assembled on the handle, and the electrode element can be immersed into a solution to be measured by operating the handle; the laboratory acid-base meter also generally comprises a host, a detection electrode and a cable, but the host is generally in a seat shape and has larger volume, and is placed on an indoor workbench for use, so that higher detection precision can be realized; industrial acid-base meters are commonly used for continuous measurement of industrial processes, and generally have alarm and control functions.

For the laboratory acid-base meter, a pH meter support is generally configured on a host, one end of the pH meter support is fixed on the host, and an electrode clamping seat is arranged at the other end of the pH meter support, so that the detection electrode can be supported and adjusted to be suspended at a specific position, a user can not need to hold the electrode all the time in the measuring process, the experimental efficiency is improved, and the laboratory acid-base meter is convenient to use. The pH meter bracket structure of the laboratory pH meter can refer to a convenient-to-use pH meter bracket for a laboratory disclosed in Chinese patent document with the publication number of CN 218502115U.

However, in the case of the portable pH meter, the pH meter holder is not disposed on the main body in consideration of portability of the main body, so that the detection electrode is often operated by hand. However, the user needs to perform more auxiliary actions, such as operating the host computer, and calibrating the pH meter with the standard buffer solution, so that the operation is inconvenient, which affects the detection efficiency.

Disclosure of Invention

The utility model mainly solves the technical problem of inconvenient operation of the portable pH meter.

In a first aspect, the present utility model provides a support stand for a portable pH meter.

A support rack for a portable pH meter, comprising:

the support rod is a telescopic rod;

the driving seat is sleeved on the supporting rod and can move along the axis of the supporting rod;

the control handle is fixed at the bottommost end of the supporting rod;

the bearing arm is provided with a clamping end and a hinging end, the clamping end is provided with an electrode clamping seat, and the electrode clamping seat is used for fixing a detection electrode of the portable pH meter; the hinged end is hinged to the top of the supporting rod so as to realize swinging, and the swinging axis is perpendicular to the axis of the supporting rod; the bearing arm is provided with an unfolding position for bearing the detection electrode and a folding position for being close to the outer peripheral surface of the supporting rod on the swing stroke;

the two ends of the connecting rod are respectively hinged with the driving seat and the bearing arm, and the connecting rod, the supporting rod, the driving seat, the control handle and the bearing arm are linked through an automatic umbrella opening and closing mechanism to realize the unfolding and folding of the bearing arm;

and the base is connected to the bottom end of the control handle and used for supporting the control handle on the bearing substrate.

In one embodiment, the control handle is pivotally mounted on the base.

In one technical scheme, a universal joint is arranged between the control handle and the base, and the universal joint enables the control handle to swing relative to the base.

In one aspect, the support arm forms an obtuse angle with the support bar when the support arm is in the deployed position.

In one technical scheme, the base is an adsorption base, the base comprises a vacuum chuck or a magnet, and the base is used for being fixed on a bearing substrate in a vacuum adsorption or magnetic adsorption mode.

In one technical scheme, the electrode clamping seat is provided with a clamping groove, the clamping groove is provided with a lateral opening, and the lateral opening is used for embedding a detection electrode of the pH meter.

In one technical scheme, the electrode clamping seat is provided with two bearing sides which are arranged along the length direction perpendicular to the bearing arms, and each bearing side is provided with the clamping groove.

In one technical scheme, the bearing arms are provided with at least two parts, and each bearing arm is uniformly distributed around the axis of the supporting rod.

In one embodiment, the support bar is formed from at least three telescoping bar sections nested in sequence.

In a second aspect, the present utility model provides a portable pH meter.

A portable pH meter comprising:

a host;

a detection electrode comprising a handle and an electrode element disposed on the handle for generating a detection signal;

and the supporting frame is the supporting frame in any one of the technical schemes.

The utility model has the beneficial effects that:

according to the supporting frame for the portable pH meter, the supporting frame comprises the supporting rod, the driving seat, the control handle, the bearing arm and the connecting rod, and all parts can be linked through the automatic umbrella opening and closing mechanism, so that the corresponding control buttons of the automatic umbrella opening and closing mechanism can be triggered to conveniently realize the unfolding and folding of the bearing arm by one hand; simultaneously, the base of support frame can realize the support frame fixed on bearing the base member to can bear the weight of the detection electrode of pH meter, compare in adopting the mode of handheld detection electrode to detect, the user can accomplish different actions more conveniently, also is favorable to improving detection efficiency.

Further, through making the bracing piece swing, the carrier arm can stretch out more farther to the side to can avoid because of the length of carrier arm is longer and lead to the whole space occupation increase of support frame, can portable more, adapt to portable pH meter's user demand.

Drawings

FIG. 1 is a schematic view of one embodiment of a support stand for a portable pH meter according to the present utility model;

FIG. 2 is a schematic view of the support frame in FIG. 1 in a folded state;

fig. 3 is a schematic view of the support stand in fig. 1 in use.

List of feature names corresponding to reference numerals in the figure:

10. a support rod; 11. a top pole segment; 12. an intermediate pole segment; 13. a bottom end pole section;

20. a driving seat;

30. a control handle; 31. a control button; 32. a universal joint;

40. a load-bearing arm; 41. a clamping groove;

50. a connecting rod;

60. a base; 61. a vacuum chuck;

70. a carrier substrate;

80. and a detection electrode.

Detailed Description

The utility model will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.

Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.

In the embodiment of the support frame for the portable pH meter, the support frame comprises a support rod 10, a driving seat 20, a control handle 30, a bearing arm 40 and a connecting rod 50, wherein the parts can be linked through an automatic umbrella opening and closing mechanism, and the unfolding and folding of the bearing arm 40 can be conveniently realized by one hand by pressing a control button 31 corresponding to the automatic umbrella opening and closing mechanism; meanwhile, the base 60 of the supporting frame can be used for fixing the supporting frame on the bearing substrate 70, so that the detecting electrode 80 of the pH meter can be borne, and compared with the detection of the handheld detecting electrode 80, the base can be used for conveniently completing different actions by a user, and the detection efficiency is also improved.

Specifically, the support pole 10 is a telescoping pole, and in one embodiment, the support pole 10 is formed from at least three telescoping pole segments nested in sequence. According to the common detection electrode 80 on the market, the length of each telescopic rod section is 9cm, and the length of each 3 telescopic rod sections can reach about 25cm when the telescopic rod sections are fully extended, and the detection electrode 80 can be suspended to a certain height by matching with the inclination of the support rod 10 and the expansion of the bearing arm 40. It should be noted that, the telescopic rod formed by nesting the telescopic rod sections in turn is a conventional structure, and the adjacent two telescopic rod sections can keep a nested state and cannot be separated from each other, and meanwhile, the telescopic function can be realized to change the length of the telescopic rod, and the space occupation can be saved in a shortened state, so that the telescopic rod is convenient to carry and store. Referring to fig. 1, the support rod 10 includes three telescopic rod sections, namely a top rod section 11, a middle rod section 12 and a bottom rod section 13 in order from the top to the bottom. Of course, in other embodiments, only two sections of the telescoping pole segments may be provided, and in some other embodiments, more than four sections of telescoping pole segments may be provided.

The driving seat 20 is of a ring structure, and the driving seat 20 is sleeved on the top end rod section 11 of the supporting rod 10 so as to move along the axis of the supporting rod 10 under the guiding action of the supporting rod 10. The control handle 30 of the support frame is fixed at the bottommost end of the support bar 10, i.e. at the lower end of the bottom bar section 13. The control handle 30 is provided with a control button 31, and the control button 31 can be a single button, and can be used for respectively realizing the unfolding and folding actions of the bearing arm 40 by pressing twice, or can be two separated buttons, wherein one button controls the unfolding, and the other button controls the folding. Both forms of control button 31 may take the form of prior art structures and are not described in detail herein.

In order to realize the support of the detection electrode 80 and form a complete automatic umbrella opening and closing mechanism, two ends of a bearing arm 40 of the support frame are respectively provided with a clamping end and a hinging end, the clamping end is provided with an electrode clamping seat, and the electrode clamping seat is used for fixing the detection electrode 80 of the portable pH meter; the hinged end is hinged at the top of the support rod 10 to realize swinging, and the swinging axis is perpendicular to the axis of the support rod 10; the carrying arm 40 has an extended position for carrying the detection electrode 80 and a folded position for being close to the outer peripheral surface of the support rod 10 on the swing stroke. In addition, the bearing arm 40 is connected with a connecting rod 50, and both ends of the connecting rod 50 are respectively hinged with the driving seat 20 and the bearing arm 40. The link 50 enables the drive base 20 to move up and down to drive the carrier arm 40 between the extended position and the collapsed position, as will be described in detail below in connection with an automatic umbrella opening and closing mechanism.

The automatic opening and closing umbrella mechanism is a mechanism for realizing automatic opening and automatic folding of an umbrella through a control button 31, the basic principle is that the first spring in the telescopic rod is used for providing the unfolding power of the telescopic rod, the second spring on the umbrella rib is used for providing the folding power of the umbrella rib, in addition, a pulley is arranged on a movable nest seat hinged with each umbrella rib at the same time as a movable pulley, a fixed pulley is arranged at the top end of the telescopic rod, and the unfolding control of the umbrella rib is realized by virtue of a pull rope bypassing the movable pulley and the fixed pulley; the control handle 30 is provided with two latches, the first latch can lock the telescopic rod to maintain a compressed state and release the telescopic rod to realize the extension of the telescopic rod, and the second latch can lock the tail end of the stay cord to enable the umbrella rib to be unfolded when the telescopic rod is extended, and is triggered to release the tail end of the stay cord after the umbrella rib is unfolded, so that the umbrella rib is folded under the action of the second spring. Of course, those skilled in the art will appreciate that the folding of the rib is not the complete folding of the umbrella, and if the umbrella is desired to be completely folded, the external force should overcome the elastic force of the first spring to completely compress the telescopic rod and the first spring of the umbrella, and the first lock catch locks the telescopic rod (and the second lock catch locks the end of the pull rope). In the present utility model, a torsion spring may be provided as the second spring at the hinge of the carrier arm 40 and the support lever 10, or a tension spring may be provided as the second spring between the support lever 10 and the link 50.

The automatic opening and closing mechanism may be any structure in the prior art, and the specific structure is not described in detail here. For example, the automatic opening and closing mechanism can adopt an automatic umbrella honeycomb of Chinese patent with publication number of CN211632050U and an automatic umbrella opening and closing mechanism disclosed in the automatic umbrella, and can also adopt an automatic umbrella handle of Chinese patent with publication number of CN114617345A and an automatic umbrella opening and closing mechanism disclosed in the automatic umbrella, and the basic principles of the automatic umbrella opening and closing mechanism are the same, and although the specific implementation forms are different, the automatic opening and closing mechanism can realize automatic opening and closing, and the automatic opening and closing requirement of the support frame is met.

In addition, it should be emphasized that the core of the present utility model is not an improvement of the automatic opening and closing mechanism in the prior art, but the supporting frame and the automatic opening and closing mechanism are combined to have the functions of automatic opening and closing by designing the corresponding carrying arm 40 and the connecting rod 50, and the principle of the automatic opening and closing mechanism is still the existing principle. The key function of the automatic umbrella mechanism is that when the control handle 30 is triggered for opening the umbrella, the supporting rod 10 is extended and drives the driving seat 20 to move upwards, and the automatic umbrella mechanism is also used for enabling the driving seat 20 to freely move along the supporting rod 10 when the control handle 30 is triggered for closing the umbrella, so that the supporting arm can be unfolded and folded respectively by means of the connecting rod 50.

In one embodiment, in order to enable the carrying arm 40 to fix the detection electrode 80 of the portable pH meter, the electrode holder is provided with a clamping groove 41, and the clamping groove 41 is slightly larger than a semicircle, and has a lateral opening, and the detection electrode 80 of the pH meter is embedded by moving along the horizontal direction. In some cases, the detecting electrode 80 needs to be matched with other detecting elements, or more than two detecting electrodes 80 need to be used simultaneously, in order to meet such use requirements, the electrode clamping seat is provided with two bearing sides which are arranged along the length direction perpendicular to the bearing arm 40, and each bearing side is provided with a clamping groove 41, so that a shape similar to a fishbone is formed. The use of the clamping groove 41 to secure the detection electrode 80 is a conventional form of securing in the art and will not be described in greater detail herein. In other embodiments, the clamping end of the carrying arm 40 may also adopt other structures other than the clamping groove 41 to fix the detecting electrode 80, for example, a retractable clamping body is adopted, the detecting electrode 80 is installed when the clamping body is opened, and the detecting electrode 80 is clamped and fixed when the clamping body is closed. Referring to FIG. 1, in one embodiment, the length of the carrier arm 40 is 15cm, depending on the fixed requirements of the pH meter.

In one embodiment, the carrying arms 40 are provided with two parts, and the two carrying arms 40 are uniformly distributed around the axis of the supporting rod 10, so that the stress of the supporting rod 10 and the base 60 can be balanced, and the carrying requirement of more detecting electrodes 80 can be met. In some other embodiments, the carrying arm 40 may be provided with more than three positions according to the use requirement. It should be noted that the specific structural form of the carrying arm 40 is not limited, for example, the carrying arm 40 may be a cylinder with a circular cross section and a prism with a square cross section, and for example, the carrying arm 40 may also be a plate-like structure. Considering that the carrying arms 40 need to be folded, in one embodiment, the carrying arms 40 may be configured as a columnar structure, so as to reduce space occupation, and particularly when the number of carrying arms 40 is large, the use of the columnar structure may be more advantageous in terms of space occupation.

In one embodiment, the hinge between the link 50 and the carrier arm 40 is located at the middle section of the carrier arm 40, facilitating easier deployment of the carrier arm 40. Of course, in some other embodiments, the hinge point of the link 50 with the carrier arm 40 may be located on one of the sides of the middle section of the carrier arm 40, i.e., at the clamping end or the hinge end of the carrier arm 40.

In one embodiment, a base 60 is attached to the bottom end of the control handle 30 for support to a load bearing base 70. Depending on the environment of use, the load bearing substrate 70 may be a floor, a table top, a wall, a glass window, etc., and correspondingly, the base 60 may take different forms. For example, for a portable pH meter that is primarily used in a field environment, base 60 may be inserted directly into the ground layer using a wedge-shaped plug. For another example, for a portable pH meter that is primarily used in an indoor environment, the base 60 may employ a vacuum chuck 61. Referring to fig. 1 and 2, in one embodiment, the base 60 of the support frame is an adsorption base, and the base 60 includes a vacuum chuck 61 for being fixed to the supporting substrate 70 in a vacuum adsorption manner. In one embodiment, the vacuum chuck 61 has a diameter of 10cm and is capable of being firmly attached to the carrier substrate 70. Of course, in other embodiments, the base 60 may be other structures, such as a more steel-structured use environment, where the base 60 may include a magnet that is magnetically attracted to the ferromagnetic carrier substrate 70. In some other embodiments, the base 60 may also be a replaceable base that can be removed and replaced to accommodate different use environments.

Because the base 60 occupies the space at the bottom of the support frame to a certain extent, and the length of the carrying arm 40 is long, the storage difficulty is increased, so in one embodiment, the control handle 30 is swingably assembled on the base 60, so that the support rod 10 can be tilted, and the pH meter can be far away from the base 60, and the fixed height of the pH meter can be adjusted. In an embodiment, referring to fig. 2 and 3, a universal joint 32 is disposed between the control handle 30 and the base 60, the universal joint 32 is provided for swinging the control handle 30 relative to the base 60, and the universal joint 32 is in a spherical hinge structure and can be locked after being adjusted to a certain angle. Those skilled in the art will appreciate that the locking of the ball joint may generally be by tightening a set screw or by holding the ball joint support, and will not be described in detail herein. The universal joint 32 can adapt to different swinging directions, so that operation requirements can be better met, and particularly, the support rod 10 can be flexibly inclined towards the unfolding direction of the bearing arms 40 when the number of the bearing arms 40 is more than or equal to two. To facilitate the folding of the carrying arm 40 with less space, the carrying arm 40 is a straight arm, but for the carrying arm 40 in the form of a straight arm, the carrying arm 40 may be inclined after the supporting arm 10 swings at an angle, which is disadvantageous for the pH meter to be fixed vertically, and in order to avoid this problem, in one embodiment, the carrying arm 40 forms an obtuse angle with the supporting arm 10 when the carrying arm 40 is in the unfolded position, so that the carrying arm 40 is just horizontal after the supporting arm 10 swings at an angle, and the pH meter may be vertical. Of course, in some other embodiments, the carrying arm 40 may be bent or curved so that the pH meter is vertically fixed when the support bar 10 swings to an inclined state. In addition, in some other embodiments, the supporting rod 10 may also be directly fixedly connected with the base 60, and when in use, the fixing position of the base 60 may be adjusted to achieve the inclination of the supporting rod 10, or, in case of meeting the use requirement of the pH meter, the supporting rod 10 may also be arranged in a vertical state, where the carrying arm and the supporting rod may also be mutually perpendicular or form an acute angle. In other embodiments, the control handle 30 may also be hinged to the base 60 by a pivot.

When in use, the base 60 of the support frame is supported on the bearing matrix 70 in a clamping or adsorbing mode, and the extension of the support rod 10 and the unfolding of the bearing arm 40 can be realized simultaneously by pressing the control button 31 on the control handle 30. Then, the angle of the support bar 10 (refer to fig. 3) is adjusted or the support bar 10 is kept vertical, and the pH detection electrode 80 of the pH meter is mounted on the clamping end of the carrying arm 40, so that the pH detection can be performed on the sample in the sample container. After the detection is finished, the pH meter is taken down, the control button 31 on the control handle 30 is pressed, shortening of the supporting rod 10 and folding of the bearing arm 40 can be realized simultaneously, the supporting frame is convenient to store and carry, the operation requirement of the portable pH meter can be well met, and the detection efficiency is improved. Through making bracing piece 10 swing, bear arm 40 can stretch out more to the side to can avoid leading to the whole space occupation increase of support frame because of the length of bearing arm 40 is longer, can portable more, adapt to portable pH meter's user demand.

Examples of portable pH meter in the present utility model:

the portable pH meter comprises a host, a detection electrode 80 and a supporting frame, wherein the detection electrode 80 comprises a handle and an electrode element, the electrode element is arranged on the handle and used for generating a detection signal, and the detection electrode 80 can adopt the existing structure. The structure of the support frame is the same as that of any of the above embodiments, and will not be described here again.

The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.

Claims

1. A support frame for portable pH meter, its characterized in that includes:

the support rod is a telescopic rod;

the control handle is fixed at the bottommost end of the supporting rod;

2. The support bracket of claim 1 wherein said control handle is swingably mounted to said base.

3. The support frame of claim 2, wherein a universal joint is provided between the control handle and the base, the universal joint allowing the control handle to swing relative to the base.

4. The support frame of claim 2, wherein the load arm forms an obtuse angle with the support bar when the load arm is in the extended position.

5. The support frame of any one of claims 1 to 4, wherein the base is an adsorption base, the base comprising a vacuum chuck or a magnet, the base being adapted to be secured to a load-bearing substrate by vacuum adsorption or magnetic adsorption.

6. The support frame of any one of claims 1 to 4, wherein the electrode holder is provided with a clamping groove, the clamping groove having a lateral opening into which a detection electrode of the pH meter is inserted.

7. The support frame of claim 6, wherein the electrode holder has two carrying sides arranged perpendicular to the length direction of the carrying arm, and each carrying side is provided with the clamping groove.

8. A support as claimed in any one of claims 1 to 4, wherein the carrying arms are provided in at least two positions, each carrying arm being equispaced about the axis of the support bar.

9. A support according to any one of claims 1 to 4 wherein the support bar is formed from at least three telescoping pole segments nested in sequence.

10. Portable pH meter, its characterized in that includes:

a host;

and a support frame as claimed in any one of claims 1 to 9.