A pH meter probe

Abstract

The present invention discloses the technical field of pH meter probes, and in particular relates to a pH meter probe, comprising a main body structure, including a handle, a connecting line and an electrode bulb; a protection mechanism, which is arranged on the main body structure, and the protection mechanism comprises a locking component and a protection component, wherein the locking component is used to control the locking state of the protection component, and the electrode bulb is protected by arranging a protection shell, and a hemispherical shell is arranged in the protection shell, and the surface of the electrode bulb is cleaned by the hemispherical shell; wherein the base can both store the pH meter probe and clean the pH meter probe in cooperation with the hemispherical shell, so that each time the pH meter probe is used, it can be automatically cleaned by inserting it into the base, thereby reducing the workload of the staff on cleaning the pH meter probe, and does not cause the problem of different cleaning effects affecting the measurement accuracy due to manual differences.

Description

Technical Field

[0001] The invention relates to the technical field of pH meter probes, and in particular to a pH meter probe. Background Art

[0002] If the surface of the pH meter probe is not cleaned in time after the work is completed, the measurement accuracy may be affected. Therefore, the surface of the pH meter probe needs to be cleaned after the detection work is completed. Traditional cleaning methods such as brushing and wiping are all done manually, which requires operators to spend more time to handle each probe, thereby increasing maintenance and operating costs. In addition, due to differences in each person's strength, cleaning method or working status, manual cleaning may lead to inconsistent cleaning results. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above-mentioned problems that the existing manual cleaning takes time and the manual cleaning effects vary, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a pH meter probe.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a main body mechanism, including a handle, a connecting wire and an electrode bulb; a protection mechanism, arranged on the main body mechanism, the protection mechanism includes a locking component and a protection component, and the locking component is used to control the locking state of the protection component.

[0007] As a preferred solution of the pH meter probe of the present invention, wherein: the locking assembly includes a connecting shell and a locking rod, the connecting shell is fixedly connected to the outer wall of the handle, the end surface of the connecting shell is provided with a movable through groove, and the locking rod is arranged in the movable through groove; the movable through groove is divided into a locking section and a movable section, and the diameter of the locking section is greater than the width of the movable section.

[0008] As a preferred solution of the pH meter probe of the present invention, the protection component includes a protection shell and a locking rope, the protection shell is sleeved with the handle, one end of the locking rope is connected to the protection shell, and the other end of the locking rope is connected to the locking rod.

[0009] As a preferred solution of the pH meter probe of the present invention, the locking rope is used to connect the protective shell and the handle, and the locking rope cooperates with the locking rod to control the socket connection state of the protective shell and the handle.

[0010] As a preferred solution of the pH meter probe of the present invention, the end of the handle is connected to a movable track, the end of the movable track is provided with a movable groove, and the locking rod passes through the connecting shell and extends into the movable groove.

[0011] As a preferred solution of the pH meter probe of the present invention, it also includes a cleaning mechanism, which is arranged on the protective shell and is used to clean the end of the electrode bulb. The cleaning mechanism includes a connecting component, an inflating component, a movable component and a base. The movable component is arranged in the protective shell through the connecting component. The movable component and the base are used to clean the surface of the electrode bulb in cooperation with each other, and the inflating component is used to control the connection state of the movable component and the protective shell.

[0012] As a preferred solution of the pH meter probe described in the present invention, the connecting component includes a connecting rod and an airbag, the connecting rod is hollow, the connecting rod is connected to the airbag, the connecting rod is filled with gas, the connecting rod passes through the protective shell, and the airbag is located between the inner wall of the protective shell and the movable component.

[0013] As a preferred solution of the pH meter probe described in the present invention, the inflation component includes a push rod, a piston and a positioning column, the push rod is fixedly connected to the piston at one end close to the airbag, the piston has the same cross-section as the inner wall of the connecting rod, a connecting cover is provided at the end of the push rod, the connecting cover is fixedly connected to the positioning column at one end close to the connecting rod, and the outer wall of the protective shell is provided with a positioning groove adapted to the positioning column.

[0014] As a preferred solution of the pH meter probe of the present invention, the movable component includes a hemispherical shell and a movable groove, the side of the hemispherical shell close to the electrode bulb is a cleaning side, and the side of the hemispherical shell close to the protective shell is provided with a movable groove.

[0015] As a preferred solution of the pH meter probe of the present invention, an air outlet column is arranged in the base, a timer and an air storage cavity are arranged in the base, and a liquid storage cavity is arranged in the base.

[0016] The beneficial effects of the present invention are as follows: the electrode bulb is protected by providing a protective shell, and a hemispherical shell is provided inside the protective shell, so that the surface of the electrode bulb is cleaned by the hemispherical shell;

[0017] The base can not only store the pH meter probe, but also cooperate with the hemispherical shell to clean the pH meter probe, so that each time the pH meter probe is used, it can be automatically cleaned by inserting it into the base, which reduces the workload of the staff for cleaning the pH meter probe and does not cause the problem of different cleaning effects affecting the measurement accuracy due to manual differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 It is a schematic diagram of inserting the protective shell of the pH meter probe of the present invention into the base.

[0020] Figure 2 It is a schematic diagram of the overall structure of the pH meter probe of the present invention.

[0021] Figure 3 It is a schematic diagram of the handle and protective shell of the pH meter probe of the present invention being separated.

[0022] Figure 4 It is a partial structural schematic diagram of the pH meter probe of the present invention.

[0023] Figure 5 It is a cross-sectional view of the protective shell of the pH meter probe of the present invention.

[0024] Figure 6 It is a schematic diagram of the hemispherical shell and connecting rod of the pH meter probe of the present invention.

[0025] Figure 7 It is a cross-sectional schematic diagram of the connecting rod of the pH meter probe of the present invention.

[0026] Figure 8 It is a schematic cross-sectional view of the base of the pH meter probe of the present invention.

[0027] In the figure: 100, main body mechanism; 101, handle; 101a, moving track; 101b, moving groove; 102, connecting line; 103, electrode bulb; 200, protection mechanism; 201, locking assembly; 201a, connecting shell; 201b, locking rod; 201c, moving through groove; 201c-1, locking section; 201c-2, moving section; 202, protection assembly; 202a, protection shell; 202b, locking rope; 202c, connecting hole; 300, cleaning mechanism; 301, connecting assembly; 301a, connecting rod; 301b, air bag; 302, inflation assembly; 302a, push rod; 302b, piston; 302c, positioning column; 303, movable assembly; 303a, hemispherical shell; 303b, movable groove; 304, base; 304a, air outlet column. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0032] Example 1

[0033] Reference Figures 1 to 3, which is the first embodiment of the present invention, provides a pH meter probe, including a main body mechanism 100, including a handle 101, a connecting line 102 and an electrode bulb 103; a protection mechanism 200, the protection mechanism 200 includes a locking component 201 and a protection component 202, the locking component 201 is used to control the locking state of the protection component 202, it should be noted that it is worth noting that a connecting hole 202c is provided at the bottom end of the protection shell 202a, and a groove adapted to the handle 101 and the electrode bulb 103 is provided in the protection shell 202a, so that the protection shell 202a is adapted to the pH meter probe to protect the electrode bulb 103.

[0034] Furthermore, the locking assembly 201 includes a connecting shell 201a and a locking rod 201b. The connecting shell 201a is fixedly connected to the outer wall of the handle 101. A movable through groove 201c is provided on the end face of the connecting shell 201a. The locking rod 201b is arranged in the movable through groove 201c. The movable through groove 201c is divided into a locking section 201c-1 and a movable section 201c-2. The diameter of the locking section 201c-1 is greater than the width of the movable section 201c-2.

[0035] It should be noted that the locking rod 201b is divided into three parts, which are the first section, the middle section and the tail section from top to bottom, wherein the cross-sectional diameters of the first section and the tail section are the same, and the cross-sectional diameter of the middle section is smaller than that of the first section. A return spring is arranged between the end of the tail section of the locking rod 201b and the moving groove 101b at the end of the handle 101, and one end of the return spring is fixedly connected to the end of the tail section of the locking rod 201b, and the other end of the return spring can move along the end of the moving groove 101b at the end of the handle 101, wherein the lock The first section and the tail section of the locking rod 201b have the same cross-sectional diameter as the locking section 201c-1 of the movable through slot 201c, and the middle section of the locking rod 201b has the same cross-sectional diameter as the movable section 201c-2 of the movable through slot 201c. That is, the first section and the tail section are adapted to the locking section 201c-1, and the middle section is adapted to the movable section 201c-2, so that when the tail section of the locking rod 201b is located in the locking section 201c-1 of the movable through slot 201c, the locking rod 201b is connected to the connecting shell 201c. 1a is fixed in relative position, the locking rod 201b cannot move and is in a locked state. When the middle section of the locking rod 201b is located in the locking section 201c-1 of the movable through slot 201c, the locking rod 201b can move along the movable through slot 201c at the end of the connecting shell 201a. At this time, the locking rod 201b can move along one end of the movable through slot 201c to the other end. At this time, the locking rope 202b also changes between the tightened and relaxed states. When the protective shell 202a is sleeved on the end of the handle 101, at this time When the locking rope 202b is in a taut state, the protective shell 202a and the handle 101 cannot be separated, and the protective shell 202a protects the electrode bulb 103. When the locking rope 202b is in a loose state, the protective shell 202a and the handle 101 can be separated. At this time, the protective shell 202a is removed from the end of the handle 101, and the pH meter probe can be used for detection. From above, the protective shell 202a can be connected to the handle 101 through the locking rope 202b to prevent the protective shell 202a from being lost;

[0036] In the initial state, the tail section is located in the movable slot 201c at the end of the connecting shell 201a. When the end of the locking rod 201b is subjected to downward pressure, the tail section moves downward along the movable slot 201c to the connecting slot at the end of the handle 101. At this time, the middle section is located in the movable slot 201c of the connecting shell 201a. At this time, the locking rod 201b is continuously pressed and pushed to move along the end of the movable slot 201c to the other end. At this time, the locking rope 202b is in a relaxed state, and the protective shell 202a can be removed from the hand. The end of the handle 101 is removed, and when the locking rod 201b moves to the other end along the movable slot 201c, the locking rod 201b is released, and the locking rod 201b moves upward to the end of the movable slot 201c under the action of the return spring at its bottom end. At this time, the locking rod 201b cannot move along the movable slot 201c, and the relaxed state of the locking rope 202b is locked. The protective shell 202a is removed from the end of the handle 101. At this time, the electrode bulb 103 is exposed to the outside, and the pH meter probe can be used for work.

[0037] Example 2

[0038] Reference Figure 3 to Figure 4 This embodiment is different from the first embodiment in that: the protection component 202 includes a protection shell 202a and a locking rope 202b, the protection shell 202a is sleeved with the handle, one end of the locking rope 202b is connected to the protection shell 202a, and the other end of the locking rope 202b is connected to the locking rod.

[0039] Specifically, the locking rope 202b is used to connect the protective shell 202a and the handle, and the locking rope 202b cooperates with the locking rod to control the sleeve connection state of the protective shell 202a and the handle.

[0040] Furthermore, a movable track 101a is connected to the end of the handle 101, a movable groove 101b is formed at the end of the movable track 101a, and a locking rod 201b passes through the connecting shell 201a and extends into the movable groove 101b.

[0041] The rest of the structure is the same as that of Example 1.

[0042] Example 3

[0043] Reference Figures 5 to 8 This embodiment is different from the above embodiments in that it also includes a cleaning mechanism 300, which is arranged on the protective shell 202a. The cleaning mechanism 300 is used to clean the end of the electrode bulb 103. The cleaning mechanism 300 includes a connecting component 301, an inflating component 302, a movable component 303 and a base 304. The movable component 303 is arranged in the protective shell 202a through the connecting component 301. The movable component 303 and the base 304 are used to clean the surface of the electrode bulb 103. The inflating component 302 is used to control the connection state of the movable component 303 and the protective shell 202a.

[0044] Specifically, the connecting component 301 includes a connecting rod 301a and an airbag 301b. The connecting rod 301a is hollow and connected to the airbag 301b. The connecting rod 301a is filled with gas and passes through the protective shell 202a. The airbag 301b is located between the inner wall of the protective shell 202a and the movable component 303.

[0045] Among them, the inflation component 302 includes a push rod 302a, a piston 302b and a positioning column 302c. The end of the push rod 302a close to the airbag 301b is fixedly connected to the piston 302b. The piston 302b has the same cross-section as the inner wall of the connecting rod 301a. A connecting cover is provided at the end of the push rod 302a. The connecting cover is fixedly connected to the positioning column 302c at one end close to the connecting rod 301a. The outer wall of the protective shell 202a is provided with a positioning groove adapted to the positioning column 302c.

[0046] Furthermore, the movable component 303 includes a hemispherical shell 303a and a movable groove 303b. The side of the hemispherical shell 303a close to the electrode bulb 103 is a cleaning side, and the side of the hemispherical shell 303a close to the protective shell 202a is provided with an movable groove 303b. It is worth noting that the cross-sectional diameter of the movable groove 303b is larger than the cross-sectional diameter of the connecting rod 301a. Such a setting is conducive to the movement of the hemispherical shell 303a up and down and left and right within a certain range. However, when the airbag 301b is filled with gas, the cross-sectional area of ​​the airbag 301b is larger than the cross-sectional area of ​​the movable groove 303b, that is, when the airbag 301b is filled with gas, the connecting rod 301a is connected to the hemispherical shell 303a through the airbag 301b, and an active cavity is provided in the hemispherical shell 303a. The airbag 301b is located in the active cavity and can move up and down and left and right synchronously with the connecting rod 301a in the active cavity.

[0047] Furthermore, an air outlet column 304a is provided in the base 304, a timer and an air storage chamber are provided in the base 304, and a liquid storage chamber is provided in the base 304. It is worth noting that a cleaning liquid storage chamber can also be provided in the base 304. When the protective shell 202a is inserted into the base 304, the protective shell 202a presses the switch on the base 304, and the timer starts timing. The gas can be sprayed from the through hole of the air outlet column 304a to the inner wall of the protective shell 202a, and the gas is sprayed into the protective shell 202a. Under the impact of the gas, the hemispherical shell 303a moves up, down, left, and right. In the process of the movement of the hemispherical shell 303a, the surface of the electrode bulb 103 is cleaned, or the gas and the cleaning liquid can be sprayed from the through hole of the air outlet column 304a to the protective shell 202a at the same time, so that the hemispherical shell 303a is soaked with the cleaning liquid, and the hemispherical shell 303a moves up, down, left, and right under the impact of the gas, thereby cleaning the surface of the electrode bulb 103.

[0048] The rest of the structure is the same as that of Example 2.

[0049] Operation process: When the pH meter probe is needed, first press the locking rod 201b downward. When the end of the locking rod 201b is subjected to downward pressure, the tail section moves downward along the movable slot 201c to the connecting slot at the end of the handle 101. At this time, the middle section is located in the movable slot 201c of the connecting shell 201a. At this time, continue to press and push the locking rod 201b to move along the end of the movable slot 201c to the other end. At this time, the locking rope 202b is in a loose state, and the protective shell 202a can be removed from the hand. The end of the handle 101 is removed, and when the locking rod 201b moves to the other end along the movable slot 201c, the locking rod 201b is released, and the locking rod 201b moves upward to the end of the movable slot 201c under the action of the return spring at its bottom end. At this time, the locking rod 201b cannot move along the movable slot 201c, and the relaxed state of the locking rope 202b is locked. The protective shell 202a is removed from the end of the handle 101. At this time, the electrode bulb 103 is exposed to the outside, and the pH meter probe can be used for work.

[0050] After finishing the work with the pH meter probe, put the protective shell 202a on the end of the handle 101 and press the locking rod 201b downwards, and move the locking rod 201b to the other end along the movable through slot 201c at the end of the connecting shell 201a. During the movement of the locking rod 201b, the locking rope 202b is gradually tightened. When the locking rope 202b is in a tightened state, the locking rod 201b also returns to its initial state. At this time, the protective shell 202a is connected to the end of the handle 101 and cannot be separated.

[0051] Next, insert the pH meter probe into the base 304. When the pH meter probe is fully inserted into the base 304, the end of the air outlet column 304a of the base 304 extends into the connecting hole 202c at the bottom of the protective shell 202a. At this time, the air outlet column 304a begins to spray gas, and the sprayed gas is sprayed upward along the through hole of the air outlet column 304a. At this time, the hemispherical shell 303a is impacted by the gas and moves up, down, left and right within a certain range. In the process of the hemispherical shell 303a moving up, down, left and right, the surface of the electrode bulb 103 is cleaned through the continuous contact between the clean surface of the hemispherical shell 303a and the electrode bulb 103.

[0052] It should be noted that the purpose of providing a timer in the base 304 is that when the pH meter is inserted into the base 304, the timer starts to automatically count and automatically calculates the time for ejecting gas. When the timing time is up, the ejection of gas is stopped. Each time the pH meter probe is inserted into the base 304 after use, the pH meter probe will be cleaned, which saves manual operation time and facilitates the use of the pH meter probe. After the pH meter probe has been used for a long time, the pH meter probe can also be placed in an ultrasonic cleaning device for deep cleaning.

[0053] At the same time, a gas storage chamber and a liquid storage chamber can be set in the base 304 at the same time, so that after each use of the pH meter probe, gas and liquid can be sprayed out simultaneously for cleaning when the pH meter probe is inserted into the base 304. This arrangement allows the pH meter probe to be cleaned more thoroughly after each use. Correspondingly, if gas and liquid are used to clean the pH meter probe at the same time, the hemispherical shell 303a should be replaced in time before the next use.

[0054] When only gas cleaning is used, the hemispherical shell 303a can be replaced after a certain period of use. The specific method of replacing the hemispherical shell 303a is to first pull the connecting rod 301a away from the protective shell 202a. At this time, the piston 302b draws most of the gas in the airbag 301b into the inside of the connecting rod 301a. At this time, the airbag 301b becomes smaller than the diameter of the movable groove 303b. Since the diameter of the connecting rod 301a is smaller than the diameter of the movable groove 303b, the connecting rod 301a can be separated from the hemispherical shell 303a. After removing the old hemispherical shell 303a, the end of the connecting rod 301a is removed. Insert the new hemispherical shell 303a into the movable groove 303b, and then push the connecting rod 301a toward the protective shell 202a, so that the piston 302b pushes the gas in the connecting rod 301a into the airbag 301b until the airbag 301b returns to its initial state. At this time, the diameter of the airbag 301b is larger than the diameter of the movable groove 303b, and the new hemispherical shell 303a is connected to the protective shell 202a. The positioning rod on the connecting rod 301a is also inserted into the positioning groove on the outer wall of the protective shell 202a, so that the connecting rod 301a will not be separated from the protective shell 202a during use. At this point, the work of replacing the hemispherical shell 303a is completed.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0057] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A pH meter probe, characterized in that: include, The main body (100) comprises a handle (101), a connecting line (102) and an electrode bulb (103); A protection mechanism (200) is arranged on the main body mechanism (100), the protection mechanism (200) comprising a locking component (201) and a protection component (202), the locking component (201) being used to control the locking state of the protection component (202); The protection component (202) comprises a protection shell (202a) and a locking rope (202b), and the protection shell (202a) is sleeved with the handle (101); It also comprises a cleaning mechanism (300), the cleaning mechanism (300) being arranged on the protective shell (202a), the cleaning mechanism (300) being used to clean the end of the electrode bulb (103), the cleaning mechanism (300) comprising a connecting component (301), an inflating component (302), a movable component (303) and a base (304), the movable component (303) being arranged in the protective shell (202a) via the connecting component (301), the movable component (303) and the base (304) being used in cooperation to clean the surface of the electrode bulb (103), and the inflating component (302) being used to control the connection state between the movable component (303) and the protective shell (202a); The movable component (303) comprises a hemispherical shell (303a) and a movable groove (303b); a surface of the hemispherical shell (303a) close to the electrode bulb (103) is a cleaning surface, and a surface of the hemispherical shell (303a) close to the protective shell (202a) is provided with a movable groove (303b); An air outlet column (304a) is provided in the base (304), a timer and an air storage cavity are provided in the base (304), and a liquid storage cavity is provided in the base (304); The hemispherical shell (303a) moves up, down, left, and right under the impact of the gas ejected from the gas outlet column (304a), thereby cleaning the surface of the electrode bulb (103).

2. The pH meter probe according to claim 1, characterized in that: The locking assembly (201) comprises a connecting shell (201a) and a locking rod (201b); the connecting shell (201a) is fixedly connected to the outer wall of the handle (101); a movable through slot (201c) is provided on the end surface of the connecting shell (201a); and the locking rod (201b) is arranged in the movable through slot (201c); The movable through groove (201c) is divided into a locking section (201c-1) and a movable section (201c-2); the diameter of the locking section (201c-1) is greater than the width of the movable section (201c-2).

3. The pH meter probe according to claim 2, characterized in that: One end of the locking rope (202b) is connected to the protective shell (202a), and the other end of the locking rope (202b) is connected to the locking rod (201b).

4. The pH meter probe according to claim 3, characterized in that: The locking rope (202b) is used to connect the protective shell (202a) and the handle (101); the locking rope (202b) cooperates with the locking rod (201b) to control the sleeve connection state of the protective shell (202a) and the handle (101).

5. The pH meter probe according to claim 4, characterized in that: The end of the handle (101) is connected to a movable track (101a), the end of the movable track (101a) is provided with a movable groove (101b), and the locking rod (201b) passes through the connecting shell (201a) and extends into the movable groove (101b).

6. The pH meter probe according to claim 5, characterized in that: The connecting assembly (301) comprises a connecting rod (301a) and an airbag (301b); the connecting rod (301a) is hollow, the connecting rod (301a) is connected to the airbag (301b), the connecting rod (301a) is filled with gas, the connecting rod (301a) passes through the protective shell (202a), and the airbag (301b) is located between the inner wall of the protective shell (202a) and the movable assembly (303).

7. The pH meter probe according to claim 6, characterized in that: The inflation component (302) comprises a push rod (302a), a piston (302b) and a positioning column (302c); the push rod (302a) is fixedly connected to the piston (302b) at one end close to the airbag (301b); the piston (302b) has the same cross-section as the inner wall of the connecting rod (301a); a connecting cover is provided at the end of the push rod (302a); the connecting cover is fixedly connected to the positioning column (302c) at one end close to the connecting rod (301a); and a positioning groove matched with the positioning column (302c) is provided on the outer wall of the protective shell (202a).

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