Caliber-adjustable water quality meter dissolved oxygen membrane replacement auxiliary mechanism

Abstract

The utility model relates to the technical field of water quality monitoring instrument auxiliary tools, in particular to a water quality instrument dissolved oxygen membrane replacement auxiliary mechanism with an adjustable caliber, which comprises a sleeve, a screw rod and two bearings are arranged in the sleeve, inner rings of the two bearings are connected with the screw rod, outer walls of the two bearings are connected with the sleeve, and the sleeve is connected with the screw rod. A connecting block is fixed to the top end of the screw, a vertical rod is rotationally connected to the top end of the connecting block, a conical top block and four arc-shaped plates are arranged below the sleeve, a sleeve and two guide columns are integrally formed at the top end of the top block, internal threads matched with the screw are arranged on the inner wall of the sleeve, and two sliding grooves matched with the guide columns are formed in the bottom end of the sleeve. Four guide rods are fixed to the outer wall of the sleeve, inserting rods are integrally formed on the four guide rods, springs are arranged on the four inserting rods in a sleeving mode, sliding grooves matched with the inserting rods and the guide rods are formed in the four arc-shaped plates, and limiting blocks are fixed to the ends of the four inserting rods; the folding chair is convenient to adjust and store.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary tools for water quality monitoring instruments, specifically to an auxiliary mechanism for replacing the dissolved oxygen membrane of an adjustable-diameter water quality meter. Background Technology

[0002] Membrane electrode method (MEA) dissolved oxygen measurement is a commonly used method for measuring dissolved oxygen in water, and most mainstream water quality analyzer brands on the market use this method. When maintaining a water quality analyzer using this method, it is necessary to replace the membrane of the dissolved oxygen probe and the dissolved oxygen electrolyte within the probe to ensure the instrument's normal operation. Patent CN105277602B, entitled "An Auxiliary Device for Replacing Dissolved Oxygen Membrane in an Adjustable Diameter Water Quality Analyzer," is mainly used for replacing the dissolved oxygen membrane in water quality analyzers using the MEA dissolved oxygen measurement method. This device consists of an adjustable diameter collar bracket and a handheld unit. When replacing the dissolved oxygen membrane, the O-ring fixing the dissolved oxygen membrane is placed on this device, then the device with the O-ring is placed on the dissolved oxygen probe, and finally the O-ring is placed on the dissolved oxygen probe. The device is then removed to complete the replacement of the dissolved oxygen membrane in the water quality analyzer. However, when using the adjustable-diameter dissolved oxygen membrane replacement auxiliary device for water quality analyzers, it is necessary to rotate more than one telescopic nut to adjust the four arc-shaped springs. Rotating the telescopic nut by hand will cause finger pain, making the whole adjustment process quite time-consuming. Therefore, an adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism for water quality analyzers is proposed to facilitate adjustment and save time. Utility Model Content

[0003] To address the problems in the existing technology, this utility model provides an auxiliary mechanism for replacing the dissolved oxygen membrane in an adjustable-diameter water quality meter.

[0004] The technical solution adopted by this utility model to solve its technical problem is an adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism for water quality analyzers, including a sleeve. The sleeve contains a screw and two bearings. The inner rings of the two bearings are connected to the screw, and the outer walls of the two bearings are connected to the sleeve. A connecting block is fixed to the top of the screw, and a vertical rod is rotatably connected to the top of the connecting block. A conical top block and four arc-shaped plates are provided below the sleeve. A sleeve and two guide posts are integrally formed at the top of the top block. The inner wall of the sleeve has an internal thread adapted to the screw. The bottom end of the sleeve has two sliding grooves adapted to the guide posts. Four guide rods are fixed to the outer wall of the sleeve. Each of the four guide rods has an insert rod integrally formed on it, and each insert rod is fitted with a spring. Sliding grooves adapted to the insert rods and guide rods are opened on the four arc-shaped plates. Limit blocks are fixed to the ends of the four insert rods.

[0005] By adopting the above technical solution, one hand holds the sleeve, and the other hand holds the vertical rod and shakes the connecting block. When the connecting block rotates, it drives the screw to rotate. With the cooperation of the internal thread on the inner wall of the sleeve and the screw, the conical top block moves down, which is conducive to simultaneously opening the four arc plates. The setting of the insertion rod and the guide rod can improve the stability of the arc plates, thereby saving adjustment time.

[0006] Specifically, the sidewalls of all four guide rods are provided with graduations.

[0007] By adopting the above technical solution, the adjustment amount of the arc plate can be controlled by observing the scale on the guide rod.

[0008] Specifically, a protective sleeve is provided below the top block, and the protective sleeve is fitted over the bottom of the four arc-shaped plates.

[0009] By adopting the above technical solution, the protective sleeve can protect the four curved plates after use.

[0010] Specifically, a hook is fixed to one side of the connecting block.

[0011] By adopting the above technical solution, the hook design makes it convenient to hang the connecting block for storage.

[0012] Specifically, an anti-slip sleeve is fixed on the sleeve.

[0013] By adopting the above technical solution, the anti-slip sleeve is designed to facilitate gripping the sleeve.

[0014] The beneficial effects of this utility model are:

[0015] (1) The adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism of the water quality instrument described in this utility model allows one hand to hold the sleeve and the other hand to hold the vertical rod and shake the connecting block. When the connecting block rotates, it drives the screw to rotate. With the cooperation of the internal thread on the inner wall of the sleeve and the screw, the conical top block moves down, which is conducive to simultaneously opening the four arc plates. The setting of the insertion rod and the guide rod can improve the stability of the arc plates, thereby saving adjustment time.

[0016] (2) The adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism of the water quality instrument described in this utility model can protect the four arc plates after use. The hook setting makes it convenient to hang the connecting block for storage. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 For the present utility model Figure 1Enlarged view of the structure at point A in the middle;

[0020] Figure 3 For the present utility model Figure 1 Enlarged view of the structure at point B;

[0021] Figure 4 This is a schematic diagram of the structure of the insertion rod, spring and limiting block of this utility model.

[0022] In the diagram: 1. Sleeve; 2. Connecting block; 3. Vertical rod; 4. Anti-slip sleeve; 5. Sleeve tube; 6. Guide rod; 7. Guide post; 8. Top block; 9. Arc plate; 10. Protective sleeve; 11. Screw; 12. Bearing; 13. Hook; 14. Insert rod; 15. Spring; 16. Limiting block. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] For ease of adjustment, as one embodiment of this utility model, such as Figures 1 to 4 As shown, the adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism of this utility model includes a sleeve 1. A screw 11 and two bearings 12 are housed inside the sleeve 1. The inner rings of the two bearings 12 are welded to the screw 11, and the outer walls of the two bearings 12 are welded to the sleeve 1. A connecting block 2 is welded and fixed to the top of the screw 11. A vertical rod 3 is rotatably connected to the top of the connecting block 2. A conical top block 8 and four arc-shaped plates 9 are provided below the sleeve 1. The top of the top block 8... The sleeve 5 and two guide posts 7 are integrally formed. The inner wall of the sleeve 5 is provided with an internal thread that matches the screw 11. The bottom end of the sleeve 1 is provided with two sliding grooves that match the guide posts 7. Four guide rods 6 are welded and fixed to the outer wall of the sleeve 1. Each of the four guide rods 6 has an insert rod 14 integrally formed on it. Each of the four insert rods 14 is fitted with a spring 15. Each of the four arc plates 9 has a sliding groove that matches the insert rod 14 and the guide rods 6. The ends of the four insert rods 14 are fixed with limit blocks 16 by adhesive.

[0025] When in use, hold the sleeve 1 with one hand and the vertical rod 3 with the other hand and shake the connecting block 2. When the connecting block 2 rotates, it drives the screw 11 to rotate. With the cooperation of the internal thread on the inner wall of the sleeve 5 and the screw 11, the conical top block 8 moves down, which is conducive to simultaneously opening the four arc plates 9. The setting of the insertion rod 14 and the guide rod 6 can improve the stability of the arc plate 9, thereby saving adjustment time.

[0026] To facilitate control of the adjustment amount of the curved plate 9, for example, such as Figure 3 As shown, the sidewalls of the four guide rods 6 are all provided with scales.

[0027] To protect the curved plate 9, for example, such as Figure 1 As shown, a protective sleeve 10 is provided below the top block 8, and the protective sleeve 10 is fitted onto the bottom ends of the four arc-shaped plates 9.

[0028] For ease of storage, for example, such as Figure 2 As shown, a hook 13 is fixed to one side of the connecting block 2 by adhesive.

[0029] For ease of gripping, for example, such as Figure 1 As shown, an anti-slip sleeve 4 is fixed to the sleeve 1 by adhesive.

[0030] When using this utility model, hold the anti-slip sleeve 4 with one hand and the vertical rod 3 with the other hand and shake the connecting block 2. When the connecting block 2 rotates, it drives the screw 11 to rotate. With the cooperation of the internal thread on the inner wall of the sleeve 5 and the screw 11, the conical top block 8 moves down, which is conducive to simultaneously opening the four arc plates 9. The setting of the insertion rod 14 and the guide rod 6 can improve the stability of the arc plate 9, thereby saving adjustment time.

[0031] Place the O-rings onto the four arc-shaped plates 9, then place the mechanism with the O-rings onto the water quality meter probe that is already covered with the dissolved oxygen membrane. Next, place the O-rings onto the dissolved oxygen probe of the water quality meter, remove the mechanism, and complete the replacement of the dissolved oxygen membrane of the water quality meter.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. Contents not described in detail in this utility model are considered prior art known to those skilled in the art.

Claims

1. An auxiliary mechanism for replacing dissolved oxygen membrane in an adjustable-diameter water quality meter, characterized in that, The sleeve (1) includes a screw (11) and two bearings (12) inside the sleeve (1). The inner rings of the two bearings (12) are connected to the screw (11), and the outer walls of the two bearings (12) are connected to the sleeve (1). A connecting block (2) is fixed to the top of the screw (11), and a vertical rod (3) is rotatably connected to the top of the connecting block (2). A conical top block (8) and four arc-shaped plates (9) are provided below the sleeve (1). A sleeve (5) and two guide posts (7) are integrally formed on the top of the top block (8). The inner wall of the sleeve (5) is provided with an internal thread that is compatible with the screw (11). The bottom end of the sleeve (1) is provided with two sliding grooves that are compatible with the guide post (7). The outer wall of the sleeve (1) is fixed with four guide rods (6). Each of the four guide rods (6) is integrally formed with a plug rod (14). Each of the four plug rods (14) is fitted with a spring (15). Each of the four arc plates (9) is provided with a sliding groove that is compatible with the plug rod (14) and the guide rod (6). Each of the ends of the four plug rods (14) is fixed with a limit block (16).

2. The adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism for a water quality meter according to claim 1, characterized in that, The sidewalls of the four guide rods (6) are all provided with scales.

3. The adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism for a water quality analyzer according to claim 1, characterized in that, A protective sleeve (10) is provided below the top block (8), and the protective sleeve (10) is fitted onto the bottom of the four arc-shaped plates (9).

4. The adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism for a water quality meter according to claim 1, characterized in that, A hook (13) is fixed to one side of the connecting block (2).

5. The adjustable-diameter dissolved oxygen membrane replacement auxiliary mechanism for a water quality meter according to claim 1, characterized in that, An anti-slip sleeve (4) is fixed on the sleeve (1).

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