A laboratory pH meter holder

Abstract

This utility model discloses a laboratory pH meter holder, belonging to the technical field of laboratory equipment. It aims to solve the problems of existing pH meter fixing methods that easily damage the instrument, are unstable, or have poor compatibility. The key technical features include a base, a support rod, a bracket, an inner cover, and a screw cap. The support rod is fixed to the top of the base, and the bracket is fitted onto the outer wall of the support rod. A threaded rod is threaded through the outer wall of the bracket for locking the height. The inner cover is assembled into a groove in the bracket, and the screw cap is threaded into the inside of the inner cover; both are hollow structures for the pH meter's wiring harness to pass through. A sliding cavity is formed inside the bracket, and a positioning rod with a compression spring is installed within the sliding cavity. The outer wall of the inner cover has a positioning hole and a sliding hole. A rotating ring with a stop block is rotatably assembled at the bottom of the screw cap, and the stop block matches the positioning hole and the sliding hole. This holder achieves precise positioning of the inner cover through the cooperation of the positioning rod and the positioning hole. The truncated circular groove is compatible with various sizes of pH meters, preventing wiring harness tangling, providing reliable fixing, and minimizing damage to the instrument. It is mainly used for the stable fixing of laboratory pH meters.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, and in particular to a pH meter holder for laboratory use. Background Technology

[0002] In routine laboratory testing, pH meters are core instruments for measuring the acidity and alkalinity of solutions. Their electrode components are precise and fragile, requiring stable support during use. Currently, pH meters are often fixed using simple clamps or placed directly on supports. Clamping with bolts can easily damage the pH meter itself, or the clamp may be too loose and unstable. Directly embedding the pH meter into a groove results in poor stability. Some devices now integrate the pH meter into the internal cylindrical shell, connecting the cylinder directly to the support via threads. While this is stable and convenient, it has poor compatibility, only compatible with specific devices.

[0003] Therefore, a pH meter holder with a reasonable structure, reliable fixation, and convenient use is designed to solve the above-mentioned defects. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as easy damage to instruments, unstable clamping, or poor compatibility, and to propose a laboratory pH meter holder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A laboratory pH meter holder, including a base; The support rod is fixedly connected to the top of the base; The bracket is fitted onto the outer wall of the support rod; The inner cover and the screw cap are fitted into a groove in the bracket, and the screw cap is threaded into the inside of the inner cover. Both the inner cover and the screw cap are hollow structures to allow the wiring harness of the pH meter body to pass through and avoid tangling.

[0006] In one possible design, the bracket has a sliding cavity inside, and a positioning rod is provided inside the sliding cavity. One end of the positioning rod is spherical and slides axially through to the inside of the bracket. The outer wall of the inner cover has a positioning hole, and one end of the positioning rod cooperates with the positioning hole to achieve positioning of the inner cover.

[0007] In one possible design, the bottom of the screw cap is rotatably fitted with a rotating ring, and a stop block is fixedly connected to the outer wall of the rotating ring. The outer wall of the inner cover is provided with a sliding hole, which is located below the positioning hole and communicates with the center of the bottom of the inner cover. The stop block is adapted to the positioning hole and the sliding hole. During assembly, the stop block can press the spherical end of the positioning rod into the sliding cavity.

[0008] In one possible design, a compression spring is fitted onto the positioning rod, which is used to reset the positioning rod after it is disengaged from the abutment and insert it into the positioning hole.

[0009] In one possible design, the screw cap has an inverted frustum groove inside, which can abut against the end of the pH meter body to accommodate pH meters of various sizes.

[0010] In one possible design, the outer wall of the screw cap is provided with an external threaded ring, and the top of the bracket is provided with a connecting threaded ring. The external threaded ring is threaded onto the outer wall of the connecting threaded ring to achieve locking between the screw cap and the bracket.

[0011] In one possible design, the outer wall of the bracket is provided with a threaded rod, which is threaded through the bracket and abuts against the support rod, for adjusting the height of the bracket and then locking it in place.

[0012] In this application, during actual use, the pH meter body is embedded in the mounting hole of the bracket, and its end is hung on the protrusion of the mounting hole. Then, the operator installs the inner cover into the bracket, with the positioning hole facing the positioning rod. During assembly, the end of the abutment will abut against the round end of the positioning rod and press it into the sliding cavity. Then, the screw cap is turned to move it downwards. The screw cap will drive the abutment to move downwards along the sliding hole through the rotating ring, causing the abutment to disengage from the positioning hole. At this time, the positioning rod will be reset by the force of the compression spring, thus inserting into the positioning hole, thereby limiting and positioning the inner cover. This ensures that the threads of the outer threaded ring and the connecting threaded ring are connected. Then, the screw cap is turned to continue. The outer threaded ring on the outer wall of the screw cap will be threaded onto the outer wall of the connecting threaded ring at the top of the bracket, thus connecting them. After this connection, the screw cap is turned to continue until the rounded groove on the inner wall of the screw cap abuts against the end of the pH meter body, thereby limiting it and completing the final fixation.

[0013] In this utility model, the laboratory pH meter holder uses the cooperation of the positioning rod and the positioning hole to position the inner cover, which can ensure that the outer screw ring on the outer wall of the screw cap can be connected with the thread of the connecting screw ring when rotating, thus avoiding deviation. In this utility model, the laboratory pH meter holder, through the hollow structure of the inner cover and the screw cap, can provide a guiding channel for the wiring harness of the pH meter body, and avoid the wiring harness from getting tangled with the instrument body or experimental equipment. In this invention, the pH meter can be assembled and fixed in various sizes, ensuring its stability and eliminating the risk of falling or shifting, while also avoiding excessive pressure damage to the pH meter itself. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the main structure of a laboratory pH meter holder proposed in this utility model; Figure 2 This is an exploded structural diagram of a laboratory pH meter holder proposed in this utility model; Figure 3 This is a cross-sectional structural diagram of a laboratory pH meter holder proposed in this utility model; Figure 4 This utility model Figure 3 Enlarged view of the structure of part A in the middle.

[0015] In the diagram: 1. Base; 2. Support rod; 3. Threaded rod; 4. Bracket; 5. pH meter body; 6. Inner cover; 7. Tight-on cap; 8. Outer threaded ring; 9. Connecting threaded ring; 10. Frustum groove; 11. Compression spring; 12. Sliding cavity; 13. Positioning rod; 14. Positioning hole; 15. Rotary ring; 16. Abutment; 17. Sliding hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In one embodiment: Reference Figure 1-2 A mounting bracket includes: a base 1 with an anti-slip pad at its bottom; and a support rod 2, which is a cylindrical solid structure, with its bottom fixedly connected to the top of the base 1 by welding or by threaded connection for detachable assembly.

[0018] The inner wall of the bracket 4 fits against the outer wall of the support rod 2 and can slide along the axial direction of the support rod 2 to adjust the height. A threaded rod 3 is screwed onto the outer wall of the bracket 4. The threaded rod 3 passes through the side wall of the bracket 4 and abuts against the outer wall of the support rod 2. By tightening the threaded rod 3, the bracket 4 can be locked at the preset height position of the support rod 2.

[0019] refer to Figure 3-4 The bracket 4 has a radially extending sliding cavity 12 inside. The sliding cavity 12 is a cylindrical cavity. The positioning rod 13 is adapted to be installed in the sliding cavity 12. One end of the positioning rod 13 is machined into a spherical structure, and this end slides through the inner wall of the bracket 4 along the axial direction of the sliding cavity 12. A compression spring 11 is sleeved on the positioning rod 13. One end of the compression spring 11 abuts against the bottom of the sliding cavity 12, and the other end abuts against the middle stepped surface of the positioning rod 13, which is used to reset the positioning rod 13.

[0020] The top of the bracket 4 is provided with a groove, and the inner cover 6 is fitted into the groove. The outer wall of the inner cover 6 is provided with a positioning hole 14 corresponding to the position of the positioning rod 13. The diameter of the positioning hole 14 is matched with the diameter of the spherical end of the positioning rod 13. The outer wall of the inner cover 6 is also provided with a sliding hole 17. The sliding hole 17 is located below the positioning hole 14 and extends along the axial direction of the inner cover 6 to the bottom of the inner cover 6, forming a through structure.

[0021] The inner wall of the screw cap 7 is machined into a truncated truncated groove 10. The taper of the truncated truncated groove 10 matches the end of the pH meter body, which facilitates the contact limit. An outer threaded ring 8 is fixedly installed on the outer wall of the screw cap 7. A connecting threaded ring 9 is fixedly installed at the corresponding position on the top of the bracket 4. The threads of the outer threaded ring 8 and the connecting threaded ring 9 match to realize the threaded connection between the screw cap 7 and the bracket 4.

[0022] The bottom of the screw cap 7 is rotatably connected to the rotating ring 15 through an annular groove. The rotating ring 15 can rotate around the axis of the screw cap 7. A stop block 16 is fixedly provided on the outer wall of the rotating ring 15. The end of the stop block 16 is a rounded transition structure. The stop block 16 cooperates with the positioning hole 14 and the sliding hole 17.

[0023] Specifically, the base 1 is placed on the experimental table. The height of the bracket 4 on the support rod 2 is adjusted according to the experimental requirements. After the bracket 4 is slid along the axis of the support rod 2 to a suitable position, the threaded rod 3 is tightened so that the end of the threaded rod 3 tightly abuts against the outer wall of the support rod 2, thus locking and fixing the bracket 4. The operator then places the measuring end of the pH meter body 5 downwards and inserts it into the recess at the top of the bracket 4. The pH meter body 5 is then attached to the protrusion of the recess in the bracket 4 by its stepped surface, thus achieving initial support. At the same time, the wiring harness of the pH meter body 5 is passed through the hollow structure of the bracket 4, leaving space for subsequent tidying. The operator then assembles the inner cover 6 into the groove at the top of the bracket 4. During the assembly process, the positioning hole 14 on the outer wall of the inner cover 6 is aligned with the positioning rod 13. At this time, the end of the abutment 16 on the outer wall of the inner cover 6 will contact the spherical end of the positioning rod 13. Continue to press the inner cover 6, and the abutment 16 will squeeze the spherical end of the positioning rod 13, causing the positioning rod 13 to slide outward along the slide cavity 12, and the compression spring 11 will be compressed and deformed. After the inner cover 6 is fully embedded in the groove of the bracket 4, rotate the screw cover 7. During the rotation, it moves downward along the axis. The rotating ring 15 at the bottom of the screw cover 7 moves downward synchronously with it. The abutment 16 on the outer wall of the rotating ring 15 slides downward along the sliding hole 17 of the inner cover 6 and gradually moves away from the position of the positioning hole 14. After the stop block 16 is completely disengaged from the positioning hole 14, the positioning rod 13 slides inward along the sliding cavity 12 under the elastic restoring force of the compression spring 11, and its spherical end is inserted into the positioning hole 14 of the inner cover 6, thereby realizing the positioning and locking of the inner cover 6 and the bracket 4, preventing the inner cover 6 from rotating or moving axially relative to the bracket 4, and ensuring the positional relationship between the outer threaded ring 8 and the connecting threaded ring 9. Then continue to screw the screw cap 7, so that it continues to move downward under the thread engagement of the outer screw ring 8 and the connecting screw ring 9, until the inverted frustum groove 10 on the inner wall of the screw cap 7 abuts against the end step surface of the pH meter body 5. The axial pressure is applied to the pH meter body through the conical action of the inverted frustum groove 10, thus achieving the final fixation of the pH meter body.

[0024] This application can be used in the field of laboratory equipment, or in other fields applicable to this application.

[0025] In another embodiment: a laboratory pH meter holder, which is applied to the field of laboratory equipment, has an inner cover 6 and a screw cap 7, both of which are hollow structures. The wiring harness for the pH meter body 5 passes through the hollow structures of the inner cover 6 and the screw cap 7 and extends to the outside.

[0026] However, as is well known to those skilled in the art, the working principle and wiring method of the pH meter body 5 are conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0027] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A laboratory pH meter holder, characterized in that, include: Base (1); Support rod (2) is fixedly connected to the top of base (1); The bracket (4) is fitted onto the outer wall of the support rod (2); The inner cover (6) and the screw cap (7) are fitted into the groove of the bracket (4) and the screw cap (7) is threaded into the inner cover (6). Both the inner cover (6) and the screw cap (7) are hollow structures for the passage of the wiring harness of the pH meter body (5) to avoid tangling.

2. The laboratory pH meter holder according to claim 1, characterized in that, The bracket (4) has a sliding cavity (12) inside, and a positioning rod (13) is provided in the sliding cavity (12). One end of the positioning rod (13) is spherical and slides through the bracket (4) along the axial direction. The outer wall of the inner cover (6) has a positioning hole (14). One end of the positioning rod (13) cooperates with the positioning hole (14) to realize the positioning of the inner cover (6).

3. The laboratory pH meter holder according to claim 2, characterized in that, The bottom of the screw cap (7) is rotatably fitted with a rotating ring (15), and the outer wall of the rotating ring (15) is fixedly connected with a stop block (16). The outer wall of the inner cover (6) is provided with a sliding hole (17), which is located below the positioning hole (14) and communicates with the center of the bottom of the inner cover (6). The stop block (16) is adapted to the positioning hole (14) and the sliding hole (17). During assembly, the stop block (16) can press the spherical end of the positioning rod (13) into the sliding cavity (12).

4. The laboratory pH meter holder according to claim 3, characterized in that, A compression spring (11) is fitted on the positioning rod (13). The compression spring (11) is used to reset the positioning rod (13) after it is disengaged from the stop block (16) and inserted into the positioning hole (14).

5. The laboratory pH meter holder according to claim 4, characterized in that, The screw cap (7) has an inverted frustum groove (10) inside, which can abut the end of the pH meter body (5) to accommodate pH meters of various sizes.

6. The laboratory pH meter holder according to claim 5, characterized in that, The outer wall of the screw cap (7) is provided with an outer threaded ring (8), and the top of the bracket (4) is provided with a connecting threaded ring (9). The outer threaded ring (8) is threaded onto the outer wall of the connecting threaded ring (9) to lock the screw cap (7) and the bracket (4).

7. The laboratory pH meter holder according to any one of claims 1 to 6, characterized in that, The outer wall of the bracket (4) is provided with a threaded rod (3), which threadedly passes through the bracket (4) and abuts against the support rod (2) for adjusting the height of the bracket (4) and then locking it in place.

Images