Fixing disc for test tubes

Abstract

A fixing disc for test tubes comprises a disc body, a plurality of round holes are formed in the disc body, restraint rings are arranged at the round holes, movable holes are formed in the peripheral sides of the restraint rings, clamping plates are arranged in the movable holes in a penetrating mode, and the test tubes are limited through the inner side ends of the clamping plates when the clamping plates are close to each other through the movably-arranged clamping plates. A mounting table is arranged on one side of the restraint ring, a screw sleeve is arranged on the mounting table, a pressing screw rod is arranged in the screw sleeve, a rotating cap is arranged at the upper end of the pressing screw rod, and a pressing plate is rotationally arranged on the rotating cap. The pressing plate can act on the upper end of the test tube, so that the lower end of the test tube is stably positioned in water, and the wrapping effect of the water on the test tube is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of test instruments, in particular to a fixing plate for test tubes. Background Art

[0002] Water bath heating is often used in experiments because it provides uniform heating and strong thermal stability. For example, when heating a beaker, etc., to prevent it from moving during heating, a retaining ring is often used to restrain the beaker. Furthermore, when heating a test tube in a water bath, a foam float is used to restrain the test tube. In a specific application, the test tube is inserted into a hole on the corresponding float, and then the float is placed on the water. At this time, the float will hold the test tube in an upright position due to the buoyancy of the water. However, the float's ability to restrain the test tube decreases with increasing use. Furthermore, if the water boils while the buoyancy is used to maintain the test tube's position, the test tube will tilt. Utility Model Content

[0003] The utility model provides a fixing plate for test tubes to solve the above-mentioned deficiencies in the prior art, and solves the problems that the existing floating plates have a limited number of reuses and poor supporting stability, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0005] A test tube fixing plate comprises a circular plate with multiple circular holes formed therein, a restraining ring disposed at each of the circular holes, a movable hole formed around the circumference of the restraining ring, and a clamping plate inserted into the movable hole. The movable clamping plate, when brought into close proximity, restrains the test tube via its inner end. A mounting platform is provided on one side of the restraining ring, a threaded sleeve is provided on the mounting platform, a downward pressure screw is disposed within the sleeve, a rotating cap is provided at the upper end of the downward pressure screw, and a pressure plate is rotatably mounted on the rotating cap. The pressure plate acts on the upper end of the test tube, thereby stably positioning the lower end of the test tube in water, thereby ensuring that the water wraps around the test tube.

[0006] Furthermore, in order to facilitate placing the disc on the water bath heating device, a convex edge is provided on the outer circumference of the disc.

[0007] Furthermore, in order to improve the applicability of the splint to the test tube, a V-shaped groove is provided on the inner end of the splint.

[0008] Furthermore, in order to increase the friction between the clamping plate and the test tube, a rubber pad is provided on the inner wall of the V-shaped groove.

[0009] Furthermore, in order to facilitate and quickly clamp and constrain the test tube, a pair of mounting vertical plates are symmetrically provided on the circumferential side of the constraint ring, a pair of cross bars are provided on the mounting vertical plates, a T-shaped seat is provided at the outer end of the cross bar, a rotating block is rotatably provided at the outer end of the T-shaped seat, an inner push screw is provided on the rotating block, an inner push plate is provided at the outer end of the clamping plate, a spring is provided between the inner push plate and the mounting vertical plate, the spring is sleeved on the cross bar, and the inner end of the inner push screw acts on the outer wall of the inner push plate.

[0010] Furthermore, in order to facilitate the rotation operation of the inner push screw, an end cap is provided at the outer end of the inner push screw.

[0011] Furthermore, in order to facilitate and quickly limit the test tube through the clamping plate, the inner end of the inner push screw is set to a hemispherical structure.

[0012] The advantages of the above technical solution are:

[0013] The utility model improves the stability and reliability of maintaining the test tube posture and has strong reusability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0015] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0016] Figure 2 An enlarged view of point A is shown.

[0017] Figure 3 A three-dimensional structure showing an actual application example Figure 1 .

[0018] Figure 4 A three-dimensional structure showing an actual application example Figure 2 . DETAILED DESCRIPTION

[0019] like Figures 1 to 4As shown, a test tube fixing plate includes a disc 1, a convex edge is provided on the outer circumference of the disc 1, a plurality of circular holes 10 are opened on the disc 1, a restraining ring 11 is provided at the circular hole 10, a movable hole 13 is opened on the circumference of the restraining ring 11, a clamping plate 24 is passed through the movable hole 13, a V-shaped groove 25 is opened on the inner end of the clamping plate 24, a rubber pad is provided on the inner wall of the V-shaped groove 25, a pair of mounting vertical plates 12 are symmetrically provided on the circumference of the restraining ring 11, and a pair of cross bars are provided on the mounting vertical plates 12 2. A T-shaped seat 20 is provided at the outer end of the crossbar 2. A rotating block 21 is rotatably provided at the outer end of the T-shaped seat 20. An inner top screw 22 is provided on the rotating block 21. An inner push plate 23 is provided at the outer end of the splint 24. A spring 26 is provided between the inner push plate 23 and the mounting vertical plate 12. The spring 26 is sleeved on the crossbar 2. The inner end of the inner top screw 22 acts on the outer wall of the inner push plate 23. The outer end of the inner top screw 22 is provided with an end cap. The inner end of the inner top screw 22 has a hemispherical structure.

[0020] A mounting platform 14 is provided on one side of the restraining ring 11 , on which a wire sleeve 3 is provided. A pressing screw rod 30 is provided in the wire sleeve 3 , and a rotating cap 31 is provided on the upper end of the pressing screw rod 30 , on which a pressing plate 32 is rotatably provided.

[0021] A pair of rotating ends 4 are rotatably provided on the disc 1 , and a limiting convex plate 40 is provided at the lower end of the rotating end 4 .

[0022] When fixing the test tube in this embodiment, the experimenter places the disc 1 on the water bath heating device. When placing it, the disc 1 is placed on the top plate 3 on the water bath heating device. When placing it, the disc 1 is placed in the placement hole 30 on the top plate 3. After placement, the rotating end 4 is rotated so that the limiting protrusion 40 is located on the lower side of the top plate 3, and the upper wall of the limiting protrusion 40 acts on the lower wall of the top plate 3. At the same time, the protruding edge after placement is located on the upper side of the top plate 3.

[0023] Then, the test tube is passed through the circular hole 10 so that the lower end of the test tube is submerged in water.

[0024] Then, the pressing plate 32 is rotated inwardly so as to limit the upper end of the test tube. After the limit is set, the length of the test tube extending into the water can be adjusted by rotating the pressing screw 30.

[0025] Then the experimenter rotates the rotating block 21, so that the inner end of the inner push screw 22 acts on the outer wall of the inner push plate 23, thereby compressing the spring 26. At this time, the splint 24 moves inward and finally limits the test tube through the V-shaped groove 25 on the inner end of the splint 24. After the limit constraint is completed, the water bath heating operation is carried out.

[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A test tube fixing plate, characterized in that: The invention comprises a disc (1), wherein a plurality of circular holes (10) are formed on the disc (1), a restraining ring (11) is provided at the circular hole (10), a movable hole (13) is formed on the circumference of the restraining ring (11), and a clamping plate (24) is inserted into the movable hole (13); A mounting platform (14) is provided on one side of the restraining ring (11), a wire sleeve (3) is provided on the mounting platform (14), a downward pressing screw rod (30) is provided in the wire sleeve (3), a rotating cap (31) is provided at the upper end of the downward pressing screw rod (30), and a pressure plate (32) is rotatably provided on the rotating cap (31).

2. The test tube fixing plate according to claim 1, wherein: A convex edge is provided on the outer circumference of the disc (1).

3. The test tube fixing plate according to claim 1, wherein: The inner end of the splint (24) is provided with a V-shaped groove (25).

4. The test tube fixing plate according to claim 3, wherein: The inner wall of the V-shaped groove (25) is provided with a rubber pad.

5. The test tube fixing plate according to claim 1, wherein: A pair of mounting vertical plates (12) are symmetrically provided on the circumference of the restraining ring (11), a pair of cross bars (2) are provided on the mounting vertical plates (12), a T-shaped seat (20) is provided at the outer end of the cross bar (2), a rotating block (21) is rotatably provided at the outer end of the T-shaped seat (20), an inner top screw (22) is provided on the rotating block (21), an inner push plate (23) is provided at the outer end of the clamping plate (24), a spring (26) is provided between the inner push plate (23) and the mounting vertical plates (12), the spring (26) is sleeved on the cross bar (2), and the inner end of the inner top screw (22) acts on the outer wall of the inner push plate (23).

6. The test tube fixing plate according to claim 5, characterized in that: The outer end of the inner top screw rod (22) is provided with an end cap.

7. The test tube fixing plate according to claim 5, wherein: The inner end of the inner screw rod (22) is a hemispherical structure.

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