Electrode protection device of pH meter

Abstract

The utility model discloses a pH meter electrode protection device, and particularly relates to the technical field of pH meters, the pH meter electrode protection device comprises a pH meter, a glass film fixedly arranged at the end part, and a protection cover of which the first end is clamped with the end part of the pH meter, and the protection cover is provided with a sealing ring; the elastic folding bag is arranged at the second end of the protective cover and is used for storing a buffer solution; the blocking rod is used for blocking a liquid outlet of the elastic folding bag; when the elastic folding bag is in a folding state, the blocking rod and the liquid outlet of the elastic folding bag are staggered so that the buffer solution can be squeezed into the protection cover. According to the pH meter electrode protection device, a buffer solution is squeezed into the protection cover through folding of the elastic folding bag, so that a glass film is fully soaked, when long-term storage is not needed, the buffer solution can be evacuated only by unfolding the elastic folding bag, the state can be changed only through the protection cover according to actual requirements, switching back and forth between two storage devices is not needed, and time and labor are saved. The storage cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pH meters, in particular to an electrode protection device for a pH meter. Background Art

[0002] The protective device of the pH meter electrode is used to prevent the electrode from being physically damaged when not in use. It is usually made of transparent plastic material and can effectively prevent the intrusion of dust and pollutants.

[0003] In conjunction with the disclosure (announcement) number CN219122096U, the disclosure (announcement) date is 2023-06-02, and a self-protecting pH meter electrode and a pH meter are disclosed, including an electrode body, a liquid storage chamber, a shielding chamber, a connecting switch and a shielding door. The liquid storage chamber is mounted on the electrode body, and the liquid storage chamber stores electrode protection liquid; the shielding chamber is configured to be a hollow columnar shape, and a gap is provided circumferentially in the shielding chamber. The electrode body passes through the liquid storage chamber and is inserted into the shielding chamber; the connecting switch includes a first state for connecting the liquid storage chamber and the shielding chamber and a second state for isolating the liquid storage chamber and the shielding chamber; the shielding door is configured to block the gap in the first state and open the gap in the second state.

[0004] However, in the prior art including the above-mentioned patent, the electrode body is immersed in the liquid storage chamber for a long time and is opened only when the protective liquid is replaced. This is suitable for long-term storage of pH meters, but for short-term storage of pH meters, the protective cover needs to be replaced, which is more troublesome. Utility Model Content

[0005] The purpose of the utility model is to provide a pH meter electrode protection device for solving the above problems.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a pH meter electrode protection device, comprising a pH meter and a glass membrane fixedly arranged at an end thereof, comprising a protective cover whose first end is clamped to the end of the pH meter, and a sealing ring is provided on the protective cover;

[0007] an elastic folded bag provided at the second end of the protective cover, for storing a buffer solution;

[0008] A blocking rod for blocking the liquid outlet of the elastic folding sac;

[0009] Wherein, when the elastic folding bag is in a folded state, the blocking rod and the liquid outlet of the elastic folding bag are staggered to squeeze the buffer solution into the protective cover.

[0010] Preferably, the elastic folded bag includes a base, the blocking rod is fixedly arranged on the base, and the elastic folded bag is used to maintain a predetermined distance between the blocking rod and the glass film.

[0011] As preferred, the base is provided with a plurality of locking rods in circumferential array, which are in sliding fit with the protective cover, and there is a locking station for locking the elastic folding bag in the sliding stroke of the locking rods.

[0012] As preferred, the protective cover is provided with a sliding groove, and the sliding groove is provided with a retaining groove at the end, which is in fit with the locking rod, and the retaining groove is in the same height as the locking station.

[0013] As preferred, the locking rod is provided with a rotating member at the end, which is in sliding fit with the sliding groove.

[0014] As preferred, the protective cover is provided with an inflation cylinder in circumferential array, which is in communication with the sealing ring, and the base is fixedly provided with a piston rod, which is in fit with the piston of the inflation cylinder.

[0015] In the above technical solution, the pH meter electrode protection device has the following advantages: the elastic folding bag is folded to squeeze into the buffer solution in the protective cover, so that the glass membrane is fully soaked, when long-term storage is not needed, the elastic folding bag is only unfolded to empty the buffer solution, and the state can be changed according to actual needs only by the protective cover, without switching between the two storage devices, and the storage cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0017] Figure 1 The overall three-dimensional schematic view provided by the embodiment of the present application;

[0018] Figure 2 The protective cover cutaway schematic view provided by the embodiment of the present application;

[0019] Figure 3 The protective cover structure schematic view provided by the embodiment of the present application;

[0020] Figure 4 The inflation cylinder and sealing ring structure schematic view provided by the embodiment of the present application;

[0021] Figure 5 The locking rod and rotating member structure schematic view provided by the embodiment of the present application.

[0022] Explanation of reference signs:

[0023] 1. pH meter; 11. Raised ring; 12. Glass membrane; 2. Protective cover; 21. Sealing ring; 22. Rubber ring; 23. Elastic folding bag; 24. Blocking rod; 25. Slide groove; 26. Guide surface; 27. Retention groove; 28. Base; 29. ​​Locking rod; 291. Rotating part; 3. Inflator; 31. Piston rod. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] like Figures 1-5 As shown, a pH meter electrode protection device includes a pH meter 1 and a glass membrane 12 fixedly arranged at the end thereof, including a protective cover 2 whose first end is clamped with the end of the pH meter 1, and a sealing ring 21 is provided on the protective cover 2;

[0026] An elastic folded bag 23 provided at the second end of the protective cover 2, which is used to store a buffer solution;

[0027] A blocking rod 24 for blocking the liquid outlet of the elastic folded capsule 23;

[0028] The elastic folding bag 23 is in the folded state, and the blocking rod 24 is staggered with the liquid outlet of the elastic folding bag 23 to squeeze the buffer solution into the protective cover 2.

[0029] Specifically, the pH meter 1 is provided with a convex ring 11, and the port of the protective cover 2 is provided with a convex block that is snap-fitted with the convex ring 11, and the inner wall of the protective cover 2 is provided with a rubber ring 22 for pressing the glass membrane 12, which can wrap and buffer the glass membrane 12 and reduce the force of vibration on the glass membrane 12.

[0030] Furthermore, when the pH meter 1 needs to be stored for a long time, the glass membrane 12 is placed downward and the pH meter 1 is pressed downward, causing the elastic folded capsule 23 to fold. The blocking rod 24 is staggered with the liquid outlet of the elastic folded capsule 23 and extends into the protective cover 2 until the pad provided at the end of the blocking rod 24 supports the glass membrane 12. At the same time, the buffer solution stored in the elastic folded capsule 23 with a pH value of 6.8625°C is squeezed into the protective cover 2. The buffer solution fully soaks the glass membrane 12, thereby maintaining the wet state of the electrode and preventing the glass membrane 12 from drying and aging. When the pH meter 1 only needs to be stored for a short period of time, the glass membrane 12 is first placed downward and the elastic folded capsule 23 is unfolded. The sealing ring 21 is used to form a closed environment in the protective cover 2. At this time, the elastic folded capsule 23 draws the buffer solution into the interior, and the blocking rod 24 blocks the liquid outlet of the elastic folded capsule 23 to prevent liquid leakage. The pH meter 1 is then turned over so that the glass membrane 12 is placed upward.

[0031] In the above technology, the buffer solution is squeezed into the protective cover 2 by folding the elastic folding bag 23, so as to fully soak the glass membrane 12. When long-term storage is not required, it is only necessary to unfold the elastic folding bag 23 to evacuate the buffer solution. The state can be changed according to actual needs only through the protective cover 2. There is no need to switch back and forth between the two storage devices, thereby reducing storage costs.

[0032] As an embodiment further provided by the present invention, the elastic folded bag 23 includes a base 28 , the blocking rod 24 is fixedly disposed on the base 28 , and the elastic folded bag 23 is used to maintain a predetermined distance between the blocking rod 24 and the glass film 12 .

[0033] Specifically, the elastic folding bag 23 is in an expanded state in the default state, and can provide buffering protection to the glass membrane 12 through its own elasticity and the buffer solution inside, thereby reducing the impact of external vibration on the glass membrane 12. The blocking rod 24 is pulled by the elastic folding bag 23 in the default state and is tightly pressed against the liquid outlet of the elastic folding bag 23, thereby playing a sealing role. When the elastic folding bag 23 is folded, the blocking rod 24 extends toward the direction of the glass membrane 12 and intersects with the liquid outlet, allowing the buffer solution to enter the protective cover 2.

[0034] As another embodiment further provided by the present invention, a plurality of locking rods 29 that slide with the protective cover 2 are arranged in a circumferential array on the base 28, and there is a locking position for locking the elastic folding bag 23 in the sliding stroke of the locking rod 29.

[0035] Specifically, the locking rod 29 moves with the base 28, and the elastic folding capsule 23 drives the base 28 to move toward the protective cover 2 during the folding process, thereby driving the locking rod 29 to slide along the protective cover 2 and reach the locking position. At this time, the locking rod 29 locks the base 28 and the protective cover 2, so that the elastic force of the elastic folding capsule 23 is overcome and maintained in the current folded state, thereby switching to a state for long-term storage of the pH meter 1.

[0036] As another embodiment further provided by the present invention, a slide groove 25 is provided on the protective cover 2, and a retention groove 27 is provided at the end of the slide groove 25 for engaging with the locking rod 29, and the retention groove 27 is consistent with the locking position height.

[0037] Specifically, the sliding groove 25 is arranged obliquely, and a guide sliding surface 26 is arranged between the sliding groove 25 and the retention groove 27; the end of the locking rod 29 is rotatably provided with a rotating piece 291 that is in sliding cooperation with the sliding groove 25, and the locking rod 29 has a certain elasticity; the rotating piece 291 has a semicircular structure, and the width of the sliding groove 25 is greater than the radius of the rotating piece 291 and less than the diameter of the rotating piece 291. When the elastic folding bag 23 is folded and stored, the base 28 drives the locking rod 29 to slide along the sliding groove 25; at this time, the semicircle of the rotating piece 291 is in a state parallel to the sliding groove 25, can naturally slide along the sliding groove 25, and drives the locking rod 29 to slightly bend and store energy; when the rotating piece 291 moves to the guide sliding surface 26, the stored energy of the locking rod 29 is released, and the locking rod 29 returns to vertical and drives the rotating piece 291 to abut against the guide sliding surface 26; the rotating piece 291 is guided by the guide sliding surface 26 to rotate to a state perpendicular to the sliding groove 25; at this time, the rotating piece 291 corresponds to the retention groove 27, and the elastic folding bag 23 pulls the locking rod 29 under its own elasticity, so that the rotating piece 291 is clamped with the retention groove 27. When it is necessary to release the locking, the elastic folding bag 23 is pressed again, so that the rotating piece 291 moves upward relative to the retention groove 27 and abuts against the guide sliding surface 26 again; the locking rod 29 is driven by the rotating piece 291 to bend again, and the rotating piece 291 is guided by the guide sliding surface 26 to rotate again to be parallel to the sliding groove 25; then it is naturally released, so that the elasticity of the elastic folding bag 23 is released, and the rotating piece 291 is driven by the locking rod 29 to slide along the sliding groove 25; at this time, the base 28 is no longer locked by the locking rod 29.

[0038] As further provided in another embodiment of the utility model, an inflation cylinder 3 is arranged in a circumferential array on the protective cover 2, and the inflation cylinder 3 is in communication with the sealing ring 21; a piston rod 31 that cooperates with the piston of the inflation cylinder 3 is fixedly arranged on the base 28.

[0039] Specifically, when the elastic folding bag 23 is folded, the base 28 is driven to move towards the protective cover 2, so as to drive the piston rod 31 to push and squeeze air in the inflation cylinder 3, and the air is squeezed into the sealing ring 21, so that the sealing ring 21 expands and fills the gap between the convex ring 11 and the pH meter 1, a closed environment is formed in the protective cover 2, and the internal buffer liquid is prevented from leaking out. When the elastic folding bag 23 is unfolded, the base 28 moves away from the protective cover 2 and drives the piston rod 31 to move; the piston rod 31 sucks the air in the sealing ring 21, so that the sealing ring 21 shrinks, and the user can pull out at any time.

[0040] Working principle: the elastic folding bag 23 is in the unfolded state in the default state, and can buffer and protect the glass film 12 through its own elasticity and the internal buffer solution, thereby reducing the influence of external vibration on the glass film 12. When the pH meter 1 needs to be stored for a long time, the glass film 12 is placed downward, and the pH meter 1 is pressed downward, so that the elastic folding bag 23 is folded, the plug rod 24 is offset from the liquid outlet of the elastic folding bag 23 and extends into the protective cover 2, the base 28 drives the locking rod 29 to slide along the sliding groove 25, at this time the semicircle of the rotating part 291 is parallel to the sliding groove 25, can naturally slide along the sliding groove 25, and drives the locking rod 29 to slightly bend and store power, when the rotating part 291 moves to the guide sliding surface 26, the power of the locking rod 29 is released, and returns to vertical, and drives the rotating part 291 to abut against the guide sliding surface 26, the rotating part 291 is guided to rotate to the state perpendicular to the sliding groove 25, at this time the rotating part 291 corresponds to the retention groove 27, and the elastic folding bag 23 pulls the locking rod 29 under its own elasticity, so that the rotating part 291 is clamped with the retention groove 27. And the pad block at the end of the plug rod 24 holds the glass film 12, at the same time, the buffer solution stored in the elastic folding bag 23 is squeezed into the protective cover 2, the buffer solution fully soaks the glass film 12, so as to keep the electrode in a wet state, prevent the glass film 12 from drying and aging.

[0041] At the same time, the base 28 approaches the protective cover 2, thereby driving the piston rod 31 to squeeze and push the air in the air cylinder 3, and the air is squeezed into the sealing ring 21, so that the sealing ring 21 expands and fills the gap between the convex ring 11 and the pH meter 1, a closed environment is formed in the protective cover 2, and the internal buffer liquid is prevented from leaking out.

[0042] When the locking needs to be released, the elastic folding bag 23 is pressed again, so that the rotating part 291 moves upward relative to the retention groove 27 and abuts against the guide sliding surface 26 again, the locking rod 29 is driven by the rotating part 291 to bend again, the rotating part 291 is guided by the guide sliding surface 26 to rotate again to be parallel to the sliding groove 25, and then is naturally released, so that the elasticity of the elastic folding bag 23 is released, and drives the rotating part 291 to slide along the sliding groove 25 through the locking rod 29, the sealing ring 21 forms a closed environment in the protective cover 2, at this time the elastic folding bag 23 sucks the buffer solution into the inside, and the plug rod 24 blocks the liquid outlet of the elastic folding bag 23 to prevent liquid leakage, and then the pH meter 1 is turned over, so that the glass film 12 is placed upward. When the elastic folding bag 23 is unfolded, the base 28 moves away from the protective cover 2 and drives the piston rod 31 to move, the piston rod 31 sucks the air in the sealing ring 21, so that the sealing ring 21 shrinks, which is convenient for the user to pull out at any time.

[0043] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A pH meter electrode protection device comprising a pH meter (1) and a glass membrane (12) fixedly arranged at the end, characterized in that, The protective cover (2) is connected with the pH meter (1) at the first end, and a sealing ring (21) is arranged on the protective cover (2); An elastic folding bag (23) is arranged at the second end of the protective cover (2) and used for storing a buffer solution; A plug rod (24) is arranged at the outlet of the elastic folding bag (23); The elastic folding bag (23) is in a folded state, and the plug rod (24) is offset from the outlet of the elastic folding bag (23) to extrude the buffer solution into the protective cover (2).

2. A pH meter electrode protection device according to claim 1, characterised in that, The elastic folding bag (23) comprises a base (28), the plug rod (24) is fixedly arranged on the base (28), and the elastic folding bag (23) is used for maintaining a predetermined distance between the plug rod (24) and the glass membrane (12).

3. A pH meter electrode protection device according to claim 2, characterised in that, A plurality of locking rods (29) are arranged on the base (28) in a circumferential array and are in sliding fit with the protective cover (2), and there is a locking station in the sliding stroke of the locking rod (29) for locking the elastic folding bag (23).

4. A pH meter electrode protection device according to claim 3, characterised in that, A sliding groove (25) is arranged on the protective cover (2), and a retention groove (27) is arranged at the end of the sliding groove (25) and is in clamping fit with the locking rod (29), the retention groove (27) is in the same height as the locking station.

5. A pH meter electrode protection device according to claim 3, wherein, A rotating member (291) is rotatably arranged at the end of the locking rod (29) and is in sliding fit with the sliding groove (25).

6. A pH meter electrode protection device according to claim 2, wherein, An inflation cylinder (3) is arranged on the protective cover (2) in a circumferential array, the inflation cylinder (3) is in communication with the sealing ring (21), and a piston rod (31) is fixedly arranged on the base (28) and is in fit with the piston of the inflation cylinder (3).

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