Detection piece and detection device
By designing specialized testing components and devices, the problems of easy damage and insufficient sealing of pH meter protective housings during installation have been solved, enabling efficient and accurate testing and installation, and ensuring the reliability and sealing of pH meters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-03-24
AI Technical Summary
Existing glass-structured pH meters are prone to damage or insufficient sealing when installed and fixed inside the pH meter protective housing. Furthermore, inconsistent processing precision of the stainless steel protective housing leads to easy breakage or air leakage of the glass probe.
Design a testing component and a testing device. The main rod of the testing component has the same length as the pH meter but a slightly larger diameter. It has a boss and external thread on its outer circumference to simulate the installation of the pH meter and to test whether the internal thread and sealing groove of the protective shell are qualified. The testing device simulates the working state of the pH meter through a testing box and an air compressor to test the sealing performance.
This effectively avoids damage to the pH meter during direct installation, reduces evaluation errors, ensures the protective casing is properly sealed, and improves the pH meter's lifespan and testing accuracy.
Smart Images
Figure CN224035312U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of pH detector detection equipment, in particular to a detection piece and a detection device. BACKGROUND
[0002] In the medical industry, the instrument for detecting pH often uses a pH meter with a glass probe. The pH meter with a glass structure is relatively cheap compared with a metal pH meter, but it is very fragile. The cost of each pH meter with a glass structure is still around several thousand yuan, and if it is frequently broken, it will also have a high economic cost. Therefore, when using a pH meter with a glass structure, a stainless steel protective shell is usually provided outside the glass probe of the pH meter to protect the glass probe of the pH meter and reduce damage.
[0003] However, the stainless steel pH meter protective shell is a machined part, and the precision of each batch is not always consistent with the requirements. There are often several problems; 1. The sealing groove in the protective shell is difficult to process and is not easy to measure. When the sealing groove is too shallow, the friction between the sealing ring and the glass outer wall of the pH meter is too large, which easily leads to glass column fracture. When the sealing groove is too deep, the contact between the sealing ring and the glass outer wall of the pH meter is too small, which easily leads to air leakage under the designed pressure. 2. When the pH meter is installed and fixed in the pH meter protective shell, the thread concentricity of the processed pH meter protective shell is not consistent with the thread concentricity of the pH meter, which causes abnormal stress on the glass column of the pH meter and glass column fracture. Content of the utility model
[0004] The purpose of the present application is to provide a detection piece and a detection device to improve the technical problems of the current pH meter with a glass structure being easily damaged or having insufficient sealing when installed and fixed in the pH meter protective shell.
[0005] In a first aspect, the embodiments of the present application provide a detection piece for detecting whether a pH meter protective shell is qualified. The pH meter protective shell includes a shell body, the shell body has a through hole for the pH meter to pass through in the middle, a sealing groove is formed in the hole peripheral wall of one end of the through hole, a sealing ring is filled in the sealing groove, and an internal thread is arranged on the hole peripheral wall of the other end of the through hole. The detection piece includes: a main rod body, the length of the main rod body is the same as the length of the pH meter, and the diameter of the main rod body is 0.4-0.6mm larger than the diameter of the pH meter; a boss is arranged on the outer peripheral wall of one end of the main rod body, an external thread is arranged on the outer surface of the boss, and the main rod body is used to pass through the through hole. When the main rod body is located in the through hole, one end of the main rod body is used to be fixed to the sealing ring, and the external thread at the other end is used to match with the internal thread.
[0006] In the implementation process, the detection piece with the same length as the pH meter and the diameter larger than the pH meter by 0.4-0.6 mm is arranged, the boss is arranged on the outer circumferential wall of one end of the main rod body, and the external thread is arranged on the outer surface of the boss, so that the pH meter can be simulated, and the detection piece is pre-installed and fixed in the pH meter protective shell to detect whether the processed pH meter protective shell is qualified, and damage caused by directly installing and fixing the pH meter in the pH meter protective shell is avoided.
[0007] In a possible implementation, the roughness of the polished surface of the main rod body and the boss is not greater than 0.4 μm.
[0008] The roughness of the surface of the main rod body and the boss is not greater than 0.4 μm through polishing, the surface of the main rod body and the boss is ensured to have small roughness and high cleanliness, the detection piece is smoothly inserted into the through hole of the pH meter protective shell, and the error in judging whether the pH meter protective shell is qualified is reduced.
[0009] In a possible implementation, the axial length of the external thread is 10-12 mm.
[0010] The external thread with the appropriate axial length is arranged on the outer surface of the boss, the detection piece is inserted into the through hole of the pH meter protective shell, the external thread is screwed with the internal thread arranged on the circumferential wall of the through hole, the detection piece is installed and fixed in the pH meter protective shell, and whether the internal thread of the produced pH meter protective shell is qualified is detected in the process that the external thread of the detection piece is screwed with the internal thread of the pH meter protective shell.
[0011] In a possible implementation, a handle is arranged at one end of the main rod body close to the boss.
[0012] The handle is arranged at one end of the main rod body close to the boss, the handle is held by hand, and the detection piece is operated and installed into the pH meter protective shell or taken out from the pH meter protective shell.
[0013] In a possible implementation, a clamping plate is arranged at one end of the boss close to the handle, the diameter of the clamping plate is greater than that of the boss, and the clamping plate is used to abut against the end face of the through hole when the main rod body is located in the through hole.
[0014] The clamping plate is arranged at one end of the boss close to the handle, the clamping plate abuts against the end face of the through hole when the main rod body is inserted into the through hole of the pH meter protective shell, the main rod body is inserted into the through hole of the pH meter protective shell at the appropriate position, too much or too little insertion is avoided, and the error in detecting and evaluating whether the pH meter protective shell is qualified is reduced.
[0015] In a second aspect, the embodiment of the present application provides a detection device, which comprises the detection member provided in the first aspect, and further comprises a detection box used in cooperation with the detection member, one side wall of the detection box is provided with a detection hole, the detection member is inserted into the through hole of the pH meter protective shell and then is integrally inserted into the detection hole, and one end of the pH meter protective shell with the sealing ring is located in the detection box.
[0016] The detection device is provided with the detection box, the detection member is inserted into the through hole of the pH meter protective shell and then is integrally inserted into the detection hole of the detection box, and one end of the pH meter protective shell with the sealing ring is located in the detection box, so that the working state of the pH meter in the reaction tank is simulated, and whether the sealing property of the pH meter protective shell is qualified is detected.
[0017] In a possible implementation, the detection member is inserted into the through hole of the pH meter protective shell and then is integrally inserted into the detection hole at an angle of 15-20 degrees with respect to the horizontal line.
[0018] The detection member is inserted into the through hole of the pH meter protective shell and then is integrally inserted into the detection hole at a suitable angle of inclination, so that the working state of the pH meter is completely simulated, and the error of detecting and evaluating whether the pH meter protective shell is qualified is reduced.
[0019] In a possible implementation, a joint is connected to one side wall of the detection box away from the detection hole, and the joint is used to connect a pipeline.
[0020] In a possible implementation, the joint is connected to the pipeline, and the pipeline is connected to an air compressor.
[0021] The joint on one side of the detection box is connected to the air compressor through the pipeline, so that air is compressed, the working pressure in the reaction tank in the working state of the pH meter is simulated in the detection box, and whether the sealing property of the pH meter protective shell is qualified is detected.
[0022] In a possible implementation, a pressure reducing valve is further arranged on the pipeline.
[0023] The pressure reducing valve is arranged on the pipeline, so that the stable and required working pressure in the reaction tank is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope. Other related drawings can also be obtained by those skilled in the art without creative labor.
[0025] Figure 1 The schematic diagram of the pH meter protective shell provided in the embodiments of the present application is shown.
[0026] Figure 2 A schematic view of a detection member provided for Embodiment 1 of the present application;
[0027] Figure 3 A schematic view of a detection device provided for Embodiment 2 of the present application.
[0028] Legend: 1 - pH meter protective shell; 11 - shell; 12 - through hole; 13 - sealing groove; 131 - sealing ring; 14 - internal thread; 2 - detection member; 21 - main rod body; 22 - boss; 221 - external thread; 23 - clamping plate; 24 - handle; 3 - detection device; 31 - detection box; 32 - joint. DETAILED DESCRIPTION
[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.
[0031] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0033] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0034] In the description of the present application, it should be further pointed out that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0035] Embodiment 1
[0036] The present application intends to improve the technical problem that the existing pH meter is easy to be damaged or insufficient in sealing degree when it is installed and fixed in the pH meter protective shell. The present embodiment provides a detection piece, as shown in Figure 1 The pH meter protective shell 1 includes a shell 11, the shell 11 has a through hole 12 in the middle for the pH meter to pass through, a sealing groove 13 is arranged on the hole wall of one end of the through hole 12, a sealing ring 131 is filled in the sealing groove 13, and an internal thread 14 is arranged on the hole wall of the other end of the through hole 12; as shown in Figure 2 The detection piece 2 includes a main rod body 21, the length of the main rod body 21 is the same as that of the pH meter, and the diameter of the main rod body 21 is 0.4-0.6 mm larger than that of the pH meter; a boss 22 is arranged on the outer circumferential wall of one end of the main rod body 21, an external thread 221 is arranged on the outer surface of the boss 22, the main rod body 21 is used to pass through the through hole 12, and when the main rod body 21 is located in the through hole 12, one end of the main rod body 21 is used to be fixed to the sealing ring 131, and the external thread 221 of the other end is used to match with the internal thread 14.
[0037] The detection piece 2 with the length the same as that of the pH meter and the diameter 0.4-0.6 mm larger than that of the pH meter is arranged, and the boss 22 is arranged on the outer circumferential wall of one end of the main rod body 21 of the detection piece 2, and the external thread 221 is arranged on the outer surface of the boss 22, which can simulate the pH meter, and is pre-installed and fixed in the pH meter protective shell 1 to detect whether the processed pH meter protective shell 1 is qualified, so as to avoid damage caused by directly installing and fixing the pH meter in the pH meter protective shell 1.
[0038] For example, the diameter of the main rod body 21 can be but is not limited to 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm larger than that of the pH meter.
[0039] In some embodiments, the main rod body 21 and the boss 22 have a polished surface roughness of no more than 0.4 μm. Polishing the surface of the main rod body 21 and the boss 22 to a roughness of no more than 0.4 μm ensures a small surface roughness and high cleanliness of the main rod body 21 and the boss 22, which facilitates smooth insertion of the detection member 2 into the through hole 12 of the pH meter protective shell 1 and reduces errors in evaluating whether the pH meter protective shell 1 is qualified.
[0040] In some embodiments, the outer thread 221 has an axial length of 10-12 mm. For example, the axial length of the outer thread 221 can be, but is not limited to, 10 mm, 10.5 mm, 11 mm, 11.5 mm, or 12 mm. The axial length of the outer thread 221 can be matched with the axial length of the inner thread 14 of the pH meter protective shell 1. The outer thread 221 with an appropriate axial length is arranged on the outer surface of the boss 22. When the detection member 2 is inserted into the through hole 12 of the pH meter protective shell 1, the outer thread 221 is screwed with the inner thread 14 arranged on the peripheral wall of the through hole 12, so that the detection member 2 is installed and fixed in the pH meter protective shell 1. At the same time, during the screwing of the outer thread 221 of the detection member 2 with the inner thread 14 of the pH meter protective shell 1, it is detected whether the inner thread 14 of the pH meter protective shell 1 produced is qualified.
[0041] In some embodiments, a handle 24 is arranged on the end of the main rod body 21 close to the boss 22. The handle 24 arranged on the end of the main rod body 21 close to the boss 22 facilitates hand holding and operating the detection member 2 to be installed into or taken out of the pH meter protective shell 1.
[0042] In some embodiments, a clamping plate 23 is arranged on the end of the boss 22 close to the handle 24, and the diameter of the clamping plate 23 is greater than that of the boss 22. When the main rod body 21 is located in the through hole 12, the clamping plate 23 is used to abut against the end surface of the through hole 12. When the main rod body 21 is inserted into the through hole 12 of the pH meter protective shell 1, the clamping plate 23 abuts against the end surface of the through hole 12, so that the main rod body 21 is inserted into the through hole 12 of the pH meter protective shell 1 to an appropriate position, avoiding excessive or insufficient insertion, and reducing errors in evaluating whether the pH meter protective shell 1 is qualified.
[0043] In the detection, the main rod body 21 of the detection piece 2 is first inserted into the through hole 12 of the pH meter protective shell 1. During the insertion, when it is found that the friction is large and it is difficult to insert, it indicates that the sealing groove 13 in the pH meter protective shell 1 is too shallow, and the pH meter protective shell 1 is unqualified. When the detection piece 2 is inserted into the pH meter protective shell 1 relatively smoothly, the outer thread 221 on the detection piece 2 is then screwed to the inner thread 14 in the pH meter protective shell 1. When the thread is difficult to screw, it indicates that the concentricity of the inner thread 14 in the pH meter protective shell 1 and the concentricity of the outer thread 221 on the detection piece 2 are inconsistent, and the pH meter protective shell 1 is unqualified. When the outer thread 221 on the detection piece 2 is screwed to the inner thread 14 in the pH meter protective shell 1 relatively smoothly, the detection device 3 is then used for further detection.
[0044] Embodiment 2
[0045] The embodiment provides a detection device, as shown in Figure 3 The detection device includes the detection piece 2 provided in the embodiment 1, and a detection box 31 used in cooperation with the detection piece 2. A detection hole is formed in a side wall of the detection box 31. After the detection piece 2 is inserted into the through hole 12 of the pH meter protective shell 1, the detection piece 2 is inserted into the detection hole of the detection box 31 as a whole, and one end of the pH meter protective shell 1 having the sealing ring 131 is located in the detection box 31.
[0046] The detection box 31 is arranged. After the detection piece 2 is inserted into the through hole 12 of the pH meter protective shell 1, the detection piece 2 is inserted into the detection hole of the detection box 31 as a whole, and one end of the pH meter protective shell 1 having the sealing ring 131 is located in the detection box 31. The scene in which the pH meter detects in the reaction tank is simulated, so that whether the sealing property of the pH meter protective shell 1 is qualified or not is detected.
[0047] In some embodiments, after the detection piece 2 is arranged in the through hole 12 of the pH meter protective shell 1, the detection piece 2 is inserted into the detection hole at an angle of 15°-20° with the horizontal line as a whole. As an example, after the detection piece 2 is arranged in the through hole 12 of the pH meter protective shell 1, the detection piece 2 can be but is not limited to inserted into the detection hole at an angle of 15°, 16°, 17°, 18°, 19° or 20° with the horizontal line as a whole. The angle of inclination of the detection piece 2 arranged in the through hole 12 of the pH meter protective shell 1 and inserted into the detection hole as a whole can simulate the working state of the pH meter. After the detection piece 2 is arranged in the through hole 12 of the pH meter protective shell 1, the detection piece 2 is inserted into the detection hole at a suitable angle of inclination as a whole, so that the working state of the pH meter is completely simulated, and the error of detecting and evaluating whether the pH meter protective shell 1 is qualified or not is reduced.
[0048] In some embodiments, a connector 32 is connected to a side wall of the detection box 31 away from the detection hole in communication. The connector 32 is used for connecting a pipeline.
[0049] In some embodiments, the joint 32 connects a pipeline, and the pipeline connects an air compressor. The joint 32 on the side of the detection box 31 connects the air compressor through the pipeline, so that the air is compressed to simulate the working pressure in the reaction tank under the working condition of the pH meter, thereby detecting whether the sealing performance of the pH meter protection shell 1 is qualified.
[0050] In some embodiments, a pressure reducing valve is further arranged on the pipeline. The pressure reducing valve arranged on the pipeline can ensure the formation of stable and required working pressure in the reaction tank.
[0051] When the detection member 2 is temporarily qualified by being inserted into the through hole 12 of the pH meter protection shell 1, further detection is performed by using the detection device 3. After the detection member 2 is inserted into the through hole 12 of the pH meter protection shell 1, the whole is inserted into the detection hole of the detection box 31, and then is put into water. The pipeline is connected to the joint 32 of the detection box 31, and the pipeline is further connected to the air compressor and provided with a pressure reducing valve. The air compressor is started to simulate the working pressure in the reaction tank under the working condition of the pH meter, and whether there is air bubble generated from the end of the sealing ring 131 of the pH meter protection shell 1 is observed. If there is air bubble generated and the air bubble is generated from the pH meter protection shell 1, it is indicated that the sealing groove 13 of the pH meter protection shell 1 is not qualified. If there is no air bubble generated, it is indicated that the pH meter protection shell 1 is qualified.
[0052] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A testing component for detecting whether a pH meter protective housing is qualified, characterized in that, The pH meter protective housing includes a housing, a through hole in the middle for the pH meter to pass through, a sealing groove is formed on the peripheral wall of one end of the through hole, a sealing ring is filled in the sealing groove, and an internal thread is provided on the peripheral wall of the other end of the through hole. The detection component includes: a main rod, the length of which is the same as the length of the pH meter, and the diameter of which is 0.4-0.6 mm larger than the diameter of the pH meter; a boss is provided on the outer peripheral wall of one end of the main rod, and an external thread is provided on the outer surface of the boss; the main rod is used to pass through the through hole; when the main rod is located in the through hole, one end of the main rod is used to fix to the sealing ring, and the external thread at the other end is used to match the internal thread.
2. The testing component according to claim 1, characterized in that, The surface roughness of both the main rod and the boss after polishing is no greater than 0.4 μm.
3. The testing component according to claim 1, characterized in that, The axial length of the external thread is 10-12 mm.
4. The testing component according to claim 2, characterized in that, A handle is provided at the end of the main rod near the boss.
5. The testing component according to claim 4, characterized in that, A retaining plate is provided at one end of the boss near the handle. The diameter of the retaining plate is larger than the diameter of the boss. When the main rod is located in the through hole, the retaining plate is used to abut against the end face of the through hole.
6. A detection device, characterized in that, The device includes the detection element as described in any one of claims 1-5, and further includes a detection box used in conjunction with the detection element. A detection hole is provided on one side wall of the detection box. After the detection element is inserted into the through hole of the pH meter protective shell, it is then inserted entirely into the detection hole. The end of the pH meter protective shell with the sealing ring is located inside the detection box.
7. The detection device according to claim 6, characterized in that, After the detection element is placed inside the through hole of the pH meter protective shell, it is then inserted into the detection hole at an angle of 15°-20° to the horizontal line.
8. The detection device according to claim 6, characterized in that, A connector is connected to the side wall of the testing box away from the testing hole, and the connector is used to connect the pipeline.
9. The detection device according to claim 8, characterized in that, The connector is connected to the pipeline, and the pipeline is connected to the air compressor.
10. The detection device according to claim 9, characterized in that, A pressure reducing valve is also installed on the pipeline.