Flexible bendable test tube brush

Abstract

The utility model discloses a flexible bendable test tube brush, which relates to the technical field of vessel cleaning and comprises an expansion mechanism, the outer wall of the expansion mechanism is fixedly connected with a main rod mechanism, and one end of the main rod mechanism is provided with a replacement mechanism. The test tube brush has plasticity and can comprehensively clean the inside of a U-shaped tube and other special-shaped test tubes, the push-pull rod is pushed into the brush rod, the position of the positioning block is changed, the pressure borne by the first spring disappears, the positioning block and the sponge cushion are driven to enter the positioning holes, the brush rod is provided with a plurality of groups of positioning holes, and the brush rod is convenient to use. The positions of a positioning block and a sponge pad are adjusted, the moving range of a push-pull rod can be adjusted, when the push-pull rod moves, multiple sets of external expansion rods are stressed to expand outwards with a hinge ball as the center, and therefore the position of the positioning block is adjusted according to the width of a test tube, and a first brush plate can be driven to expand outwards; the bristles are attached to the inner walls of the test tubes with different thicknesses, so that the application range of the test tube brush is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of utensil cleaning, in particular to a flexible and bendable test tube brush. Background Technique

[0002] During the process of chemical experiment operation, at the beginning and end stages of the experiment, in order to ensure that the reaction is free of impurities, it is necessary to ensure the cleanliness of the experimental instruments. Therefore, it is necessary to clean the experimental instruments. Among the experimental instruments, glass instruments play an important role and are one of the most important experimental instruments. The cleanliness of glass reaction instruments is related to the success or failure of the experiment and the credibility of the experimental results.

[0003] When cleaning special-shaped test tubes, the internal widths are different, and ordinary test tube brushes cannot be used to clean according to the actual situation of the test tubes. Therefore, the applicable range of ordinary test tube brushes is relatively narrow. Now, a flexible and bendable test tube brush is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flexible and bendable test tube brush to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A flexible and bendable test tube brush includes an expansion mechanism. The outer wall of the expansion mechanism is fixedly connected with a main rod mechanism, and a replacement mechanism is arranged at one end of the main rod mechanism.

[0007] The expansion mechanism includes a push-pull rod. A limiting ring is fixedly connected to the push-pull rod. Support grooves are formed in the push-pull rod and the limiting ring, and a first spring is fixedly connected to the inside of the support grooves.

[0008] A further improvement of the technical solution of the utility model is that one end of the first spring is fixedly connected with a positioning block, one end of the positioning block is fixedly connected with a sponge pad, and one end of the push-pull rod is hinged with a hinge ball. The sponge pad is located on the positioning block, which can avoid the phenomenon of scratching the inner wall of the test tube by the positioning block.

[0009] A further improvement of the technical solution of the utility model is that multiple groups of outward expansion rods are hinged to the hinge ball, and a pull ring is fixedly connected to one end of the push-pull rod. Applying a thrust to the pull ring can drive the push-pull rod to move.

[0010] A further improvement of the technical solution of the present utility model lies in that: the main rod mechanism includes a brush rod, the push-pull rod is movably connected inside the brush rod, a limiting groove is provided inside the brush rod, the limiting ring is slidably connected in the limiting groove of the brush rod, and a positioning hole is provided in the limiting groove of the brush rod. The limiting groove restricts the moving range of the limiting ring, thereby restricting the moving range of the push-pull rod and avoiding the phenomenon of the push-pull rod falling off.

[0011] A further improvement of the technical solution of the present utility model lies in that: the positioning block and the sponge pad are movably connected in the positioning hole, one end of the brush rod is hinged with a fixing plate, the fixing plate is hinged with the outer expansion rod, and clamping grooves are symmetrically provided inside the fixing plate. The positioning movement fixes the positions of the positioning block and the sponge pad, thereby fixing the position of the push-pull rod.

[0012] A further improvement of the technical solution of the present utility model lies in that: the replacement mechanism includes a first brush plate, one end of the first brush plate is hinged with a second brush plate, brush hairs are fixedly connected to both the first brush plate and the second brush plate, and second springs are symmetrically arranged on the first brush plate. The second brush plate is located outside the brush rod, thereby extending the coverage length of the brush hairs of the test tube brush.

[0013] A further improvement of the technical solution of the present utility model lies in that: one end of the second spring is fixedly connected with an arc-shaped clamping block, the arc-shaped clamping block is clamped with the clamping groove, and the first brush plate is slidably connected to the fixing plate. The second spring can push the arc-shaped clamping block outwards, and the arc-shaped clamping block can be fixed inside the clamping groove.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0015] 1. The present utility model provides a flexible and bendable test tube brush. This test tube brush has plasticity and can comprehensively clean the inside of test tubes with specific shapes such as U-shaped tubes. Push the push-pull rod into the brush rod to change the position of the positioning block. The pressure on the first spring disappears, driving the positioning block and the sponge pad into the positioning hole. Multiple groups of positioning holes are provided on the brush rod to adjust the positions of the positioning block and the sponge pad, and thus the moving range of the push-pull rod can be adjusted. When the push-pull rod moves, multiple groups of outer expansion rods are stressed and expand outwards with the hinge ball as the center, thereby adjusting the position of the positioning block according to the width of the test tube, driving the first brush plate to expand outwards, and making the brush hairs adhere to the inner walls of test tubes with different thicknesses, thereby improving the applicable range of the test tube brush.

[0016] 2. The present utility model provides a flexible and bendable test tube brush. When the first brush plate is pushed upward along the fixed plate, the arc-shaped clamping block is driven to move synchronously, so that the arc-shaped clamping block moves into the clamping groove. The second spring pushes the arc-shaped clamping block into the clamping groove, and then the positions of the first brush plate and the second brush plate can be fixed. When the second brush plate is pushed downward, a thrust is applied to the arc-shaped clamping block through the first brush plate, driving the arc-shaped clamping block out of the clamping groove, and then the first brush plate and the second brush plate can be removed, making the replacement and installation of the bristles more convenient. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic sectional structure diagram of the expansion mechanism of the present utility model;

[0019] Figure 3 is a schematic structure diagram of the main rod mechanism of the present utility model;

[0020] Figure 4 is a schematic structure diagram of the replacement mechanism of the present utility model.

[0021] In the figure: 1. Expansion mechanism; 11. Push-pull rod; 12. Limit ring; 13. Support groove; 14. First spring; 15. Positioning block; 16. Sponge pad; 17. Hinge ball; 18. Outer expansion rod; 19. Pull ring; 2. Main rod mechanism; 21. Brush rod; 22. Positioning hole; 23. Fixed plate; 24. Clamping groove; 3. Replacement mechanism; 31. First brush plate; 32. Second brush plate; 33. Bristles; 34. Second spring; 35. Arc-shaped clamping block. Detailed Embodiment

[0022] The following further describes the present utility model in detail with reference to embodiments:

[0023] Embodiment 1

[0024] As Figures 1-4 shown, the present utility model provides a flexible and bendable test tube brush, including an expansion mechanism 1. The outer wall of the expansion mechanism 1 is fixedly connected with a main rod mechanism 2. One end of the main rod mechanism 2 is provided with a replacement mechanism 3. The expansion mechanism 1 includes a push-pull rod 11. A limit ring 12 is fixedly connected to the push-pull rod 11. Support grooves 13 are formed on the push-pull rod 11 and the limit ring 12. A first spring 14 is fixedly connected inside the support groove. One end of the first spring 14 is fixedly connected with a positioning block 15. One end of the positioning block 15 is fixedly connected with a sponge pad 16. One end of the push-pull rod 11 is hinged with a hinge ball 17. Multiple groups of outer expansion rods 18 are hinged to the hinge ball 17. One end of the push-pull rod 11 is fixedly connected with a pull ring 19;

[0025] Specifically, insert the flexible test tube brush into one end of the test tube. Pinch the pull ring 19 and the brush rod 21, and push the push-pull rod 11 into the brush rod 21, driving the limit ring 12 to move synchronously, thereby changing the position of the positioning block 15. When the positioning block 15 is located behind the positioning hole 22, the pressure on the first spring 14 disappears, driving the positioning block 15 and the sponge pad 16 into the positioning hole 22, thereby fixing the position of the push-pull rod 11. At the same time, multiple groups of positioning holes 22 are provided. Press the positioning block 15 and the sponge pad 16 to make them enter the support groove 13 again, and it is possible to adjust the moving range of the push-pull rod 11. When the push-pull rod 11 moves inward, it pushes the outer expansion rod 18 through the hinge ball 17. Multiple groups of outer expansion rods 18 are stressed and expand outward centered on the hinge ball 17, thereby adjusting the position of the positioning block 15 according to the width of the test tube. Then, the first brush plate 31 can be driven by the fixing plate 23 to expand outward, and further make the bristles 33 stick to the inner walls of test tubes with different thicknesses, thus improving the applicable range of the test tube brush.

[0026] Embodiment 2

[0027] As Figures 1-4 shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, the main rod mechanism 2 includes a brush rod 21. The push-pull rod 11 is movably connected inside the brush rod 21. A limit groove is provided inside the brush rod 21. The limit ring 12 is slidably connected in the limit groove of the brush rod 21. A positioning hole 22 is provided on the limit groove of the brush rod 21. The positioning block 15 and the sponge pad 16 are movably connected in the positioning hole 22. One end of the brush rod 21 is hinged with a fixing plate 23. The fixing plate 23 is hinged with the outer expansion rod 18. Card slots 24 are symmetrically provided inside the fixing plate 23;

[0028] Specifically, the brush rod 21, the push-pull rod 11, the first brush plate 31 and the second brush plate 32 are all made of flexible materials, so that the test tube brush can be bent according to the shape of the test tube. The positioning hole 22 fixes the positions of the positioning block 15 and the sponge pad 16. At the same time, the sponge pad 16 is higher than the positioning hole 22, which can prevent the positioning block 15 from scratching the inner wall of the test tube. The fixing plate 23 is hinged to the brush rod 21. Therefore, when subjected to thrust and pull, it can drive the fixing plate 23 to expand and retract around the hinge point. At the same time, the second brush plate 32 is attached to the end of the brush rod 21, and the length of the bristles 33 of the test tube brush can be extended.

[0029] Embodiment 3

[0030] As Figures 1-4As shown, based on Embodiment 1, the present utility model provides a technical solution: Preferably, the replacement mechanism 3 includes a first brush plate 31. One end of the first brush plate 31 is hinged to a second brush plate 32. Brush hairs 33 are fixedly connected to both the first brush plate 31 and the second brush plate 32. Second springs 34 are symmetrically arranged on the first brush plate 31. One end of each second spring 34 is fixedly connected to an arc-shaped clamping block 35. The arc-shaped clamping block 35 is clamped with a clamping groove 24. The first brush plate 31 is slidably connected to a fixing plate 23.

[0031] Specifically, the first brush plate 31 is pushed upward along the fixing plate 23, driving the arc-shaped clamping block 35 to move synchronously, so that the arc-shaped clamping block 35 moves into the clamping groove 24. The second spring 34 pushes the arc-shaped clamping block 35 into the clamping groove 24, fixing the arc-shaped clamping block 35 in the clamping groove 24, and thus the positions of the first brush plate 31 and the second brush plate 32 can be fixed. When replacement is needed, the second brush plate 32 is pushed downward, applying a thrust to the arc-shaped clamping block 35 through the first brush plate 31, so as to push the arc-shaped clamping block 35 out of the clamping groove 24, and then the first brush plate 31 and the second brush plate 32 can be removed for replacement, making the replacement and installation of the brush hairs 33 more convenient.

[0032] Next, the working principle of the flexible bendable test tube brush will be specifically described.

[0033] As Figures 1-4 shown, the flexible test tube brush is inserted into one end of the test tube. Hold the pull ring 19 and the brush rod 21, and push the push rod 11 into the brush rod 21, driving the limit ring 12 to move synchronously. Multiple groups of positioning holes 22 are provided on the brush rod 21. Press the positioning block 15 and the sponge pad 16 to make them enter the support groove 13, and then the moving range of the push rod 11 can be adjusted. When the push rod 11 moves inward, it pushes the outer expansion rods 18 through the hinge balls 17. Multiple groups of outer expansion rods 18 are stressed and expand outward with the hinge balls 17 as the center, driving the fixing plate 23 to expand and retract with the hinge as the axis, so as to adjust the position of the positioning block 15 according to the width of the test tube. At the same time, the brush rod 21, the push rod 11, the first brush plate 31 and the second brush plate 32 are all made of flexible materials, so that they can be bent according to the shape of the test tube, and further make the brush hairs 33 adhere to the inner walls of test tubes with different thicknesses. The first brush plate 31 is pushed upward along the fixing plate 23, driving the arc-shaped clamping block 35 to move synchronously, so that the arc-shaped clamping block 35 moves into the clamping groove 24. The second spring 34 pushes the arc-shaped clamping block 35 into the clamping groove 24, fixing the arc-shaped clamping block 35 in the clamping groove 24 and fixing the positions of the first brush plate 31 and the second brush plate 32, and then the test tube brush can be used.

[0034] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made thereto, which are obvious to those of ordinary skill in the art. Therefore, modifications or improvements that do not depart from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A flexible and bendable test tube brush, comprising an expansion mechanism (1), characterized in that: The outer wall of the expansion mechanism (1) is fixedly connected to a main rod mechanism (2), and one end of the main rod mechanism (2) is provided with a replacement mechanism (3); The expansion mechanism (1) comprises a push-pull rod (11), a limiting ring (12) is fixedly connected to the push-pull rod (11), a support groove (13) is provided on the push-pull rod (11) and the limiting ring (12), and a first spring (14) is fixedly connected inside the support groove.

2. The flexible and bendable test tube brush according to claim 1, characterized in that: One end of the first spring (14) is fixedly connected to a positioning block (15), one end of the positioning block (15) is fixedly connected to a sponge pad (16), and one end of the push-pull rod (11) is hinged to a hinge ball (17).

3. The flexible and bendable test tube brush according to claim 2, wherein: A plurality of groups of outward expansion rods (18) are hinged on the hinged ball (17), and one end of the push-pull rod (11) is fixedly connected with a pull ring (19).

4. The flexible and bendable test tube brush according to claim 3, wherein: The main rod mechanism (2) comprises a brush rod (21), the push-pull rod (11) is movably connected to the inside of the brush rod (21), a limiting groove is provided inside the brush rod (21), the limiting ring (12) is slidably connected in the limiting groove of the brush rod (21), and a positioning hole (22) is provided on the limiting groove of the brush rod (21).

5. The flexible bendable test tube brush according to claim 4, characterized in that: The positioning block (15) and the sponge pad (16) are movably connected in the positioning hole (22); one end of the brush rod (21) is hinged with a fixing plate (23); the fixing plate (23) is hinged with the outward expansion rod (18); and a card slot (24) is symmetrically provided on the inner side of the fixing plate (23).

6. A flexible and bendable test tube brush according to claim 1, characterized in that: The replacement mechanism (3) comprises a first brush plate (31), one end of the first brush plate (31) is hingedly connected to a second brush plate (32), bristles (33) are fixedly connected to both the first brush plate (31) and the second brush plate (32), and a second spring (34) is symmetrically arranged on the first brush plate (31).

7. The flexible bendable test tube brush according to claim 6, characterized in that: One end of the second spring (34) is fixedly connected to an arc-shaped clamping block (35), the arc-shaped clamping block (35) is clamped with the clamping groove (24), and the first brush plate (31) is slidably connected to the fixed plate (23).

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