Novel burette

Abstract

The utility model relates to the field of burettes, and discloses a novel burette which comprises a burette body, a dustproof cover is detachably arranged at the top end of the burette body, a fixing plate is arranged on the surface of the burette body, a limiting strip is fixed on the surface of the dustproof cover, a release groove is formed in one side of the limiting strip, and the release groove is communicated with the dustproof cover. And storage grooves are formed in the two sides of the fixing plate correspondingly, sliding plates are slidably inserted into the storage grooves, sliding rods are fixed to one sides of the interiors of the storage grooves, and the sliding rods and the sliding plates are slidably inserted. According to the utility model, the limiting column slides oppositely on the top surface of the limiting strip and finally penetrates through the releasing groove to release the limiting of the dustproof cover, so that the dustproof cover can be opened and titrant can be received, the dustproof cover can be covered by the same hand after the titrant is received, a worker can perform the whole operation by one hand, the action is natural and coherent, and the working efficiency is improved. And the convenience in operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of burettes, in particular to a novel burette. Background Art

[0002] The burette is the main measuring instrument used in titration analysis and can be divided into two types: one is the acid burette and the other is the alkaline burette. The burette is a slender glass tube with uniform inner diameter and scale. There is a glass tip at the lower end of the tube and it must be calibrated in analytical work with high accuracy requirements.

[0003] According to the Chinese patent with publication number: CN219482719U, a sealed burette includes a storage tube: a sealing cap is threadedly connected to the right end of the storage tube, a partition is fixedly connected to the left side of the inner wall of the storage tube, a glass tube is penetrated on the left side of the storage tube, a rubber cap is fixedly connected to the left side of the glass tube, the rubber cap and the glass tube are connected, a connecting component is arranged on the left side of the partition, the connecting component includes a threaded disk fixedly connected to the left side of the glass tube surface, the threaded disk is threadedly connected to the storage tube, a first sealing ring is fixedly connected to the right side of the threaded disk, a first sealing groove matched with the first sealing ring is opened on the left side of the partition, a fixed sleeve is fixedly connected to the right side of the threaded disk, and a circular socket matched with the fixed sleeve is opened on the left side of the partition.

[0004] In the above scheme, a threaded sealing cover is used for storage, which still has the following disadvantages: when the threaded sealing cover is opened or closed, both hands are required to cooperate, which reduces the convenience during the titration operation. Utility Model Content

[0005] The utility model aims to provide a novel burette to solve the problem that the sealing cover needs to be used with both hands when opening or closing, which reduces the convenience during the titration operation.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical scheme: a new type of burette, including a burette body, a dust cover is detachably provided on the top of the burette body, a fixing plate is provided on the surface of the burette body, a limit strip is fixed on the surface of the dust cover, a release groove is provided on one side of the limit strip, storage slots are provided on both sides of the fixing plate, a sliding plate is slidably inserted in the interior of the storage slot, a sliding rod is fixed on one side of the interior of the storage slot, the sliding rod and the sliding plate are slidably inserted, a spring is surrounded on the surface of the sliding rod, one end of the spring is fixed to one side of the interior of the storage slot, the other end of the spring is fixed to one side of the sliding plate, a connecting port is provided on one side of the interior of the storage slot, a limit column is fixed on one side of the sliding plate, and the limit column is slidably inserted in the connecting port.

[0007] Preferably, a fixing ring is fixed on the surface of the burette body, the surface of the fixing ring is fixed to one side of the fixing plate, a connecting belt is fixed on the surface of the fixing ring, and the other end of the connecting belt is fixed to the surface of the dust cover.

[0008] Preferably, two air vents are provided on the outer wall surface of the dust cover.

[0009] Preferably, a plurality of scale bars are provided on the surface of the burette body.

[0010] Preferably, the dust cover is made of plastic material, which is not easily deformed in an environment with a temperature of -20°C to 70°C, and meets the laboratory's requirement of a temperature of 20±1°C.

[0011] Preferably, the dust cover is also not easily deformed in an environment with a humidity of 5% to 95%°C, and also meets the laboratory's requirement of a humidity of 30% to 70%.

[0012] Compared with the prior art, a new type of burette using the above technical solution has the following beneficial effects:

[0013] 1. When the burette body is filled with titrant, the staff holds the lower end of the burette body with one hand and the upper end of the burette body with the other hand. The hand holding the upper end of the burette body can apply opposite forces to the two sliding plates, so as to push the sliding plates to slide toward the inside of the storage tank, and drive the limit column to slide toward each other on the top surface of the limit bar, and finally pass through the release groove to release the limit of the dust cover, so that the dust cover can be opened and the titrant can be filled. After the filling is completed, the dust cover can be covered with the same hand. The staff can perform the entire operation with one hand, and the movements are natural and coherent, which increases the convenience during operation;

[0014] Second, the fixing ring will drive the fixing plate to be firmly fixed on the surface of the burette body. At the same time, since the connection belt connects and fixes the position between the fixing ring and the dust cover, it can prevent the dust cover from falling off after opening, and prevent the dust cover from contacting with the ground and being contaminated;

[0015] 3. The air vent ensures that the titrant can flow downward on the inner wall of the burette body at a normal flow rate without forming a vacuum in the upper part of the burette body to prevent the titrant from being unable to flow downward on the inner wall of the burette body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 It is an exploded perspective schematic diagram of an embodiment.

[0018] Figure 3 It is a schematic diagram of the explosion of the dust cover and the fixing ring in the embodiment.

[0019] Figure 4 It is a schematic diagram of the explosion of the fixed plate and the sliding plate in the embodiment.

[0020] In the figure: 1. burette body; 2. dust cover; 3. fixing plate; 4. limit strip; 5. release groove; 6. storage groove; 7. sliding plate; 8. sliding rod; 9. spring; 10. connecting port; 11. limit column; 12. fixing ring; 13. connecting belt; 14. vent hole; 15. scale strip. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 4 As shown, a novel burette comprises a burette body 1, a dust cover 2 is detachably provided on the top of the burette body 1, a fixing plate 3 is provided on the surface of the burette body 1, a limiting strip 4 is fixed on the surface of the dust cover 2, a release groove 5 is provided on one side of the limiting strip 4, storage grooves 6 are provided on both sides of the fixing plate 3, a sliding plate 7 is slidably inserted in the storage groove 6, a sliding rod 8 is fixed on one side of the storage groove 6, the sliding rod 8 and the sliding plate 7 are slidably inserted, a spring 9 is surrounded on the surface of the sliding rod 8, one end of the spring 9 is fixed to one side of the storage groove 6, the other end of the spring 9 is fixed to one side of the sliding plate 7, a connecting port 10 is provided on one side of the storage groove 6, a limiting column 11 is fixed on one side of the sliding plate 7, and the limiting column 11 and the connecting port 10 are slidably inserted.

[0023] During use, when the burette body 1 is used to collect the titrant, the staff member holds the lower end of the burette body 1 with one hand and the upper end of the burette body 1 with the other hand. The hand held at the upper end of the burette body 1 can apply opposite forces to the two sliding plates 7, thereby pushing the sliding plates 7 to slide toward the inside of the storage groove 6, and driving the limiting column 11 to slide toward each other on the top surface of the limiting strip 4, and finally passing through the release groove 5 to release the limit on the dust cover 2, so that the dust cover 2 can be opened and the titrant can be collected. After the collection is completed, the dust cover 2 can be covered with the same hand. The staff member can perform the entire operation with one hand, and the movements are natural and continuous, which increases the convenience during operation.

[0024] like Figure 1-Figure 3 As shown, a fixing ring 12 is fixed on the surface of the burette body 1 , the surface of the fixing ring 12 is fixed to one side of the fixing plate 3 , a connecting belt 13 is fixed on the surface of the fixing ring 12 , and the other end of the connecting belt 13 is fixed to the surface of the dust cover 2 .

[0025] During use, the fixing ring 12 will drive the fixing plate 3 to be firmly fixed on the surface of the burette body 1. At the same time, since the connecting belt 13 connects and fixes the positions of the fixing ring 12 and the dust cover 2, the dust cover 2 can be prevented from falling off after opening, and the dust cover 2 can be prevented from contacting with the ground and being contaminated.

[0026] like Figure 1-Figure 3 As shown, the outer wall of the dust cover 2 is provided with two air holes 14, and the surface of the burette body 1 is provided with a plurality of scale bars 15. The dust cover 2 is made of plastic material and is not easily deformed in an environment of a temperature of -20°C to 70°C, which meets the laboratory's requirement for a temperature of 20±1°C. The dust cover 2 is also not easily deformed in an environment of a humidity of 5% to 95%°C, which also meets the laboratory's requirement for a humidity of 30% to 70%.

[0027] During use, the air vents 14 ensure that the titrant can flow downward on the inner wall of the burette body 1 at a normal flow rate without forming a vacuum in the upper part of the burette body 1 to prevent the titrant from being unable to flow downward on the inner wall of the burette body 1 .

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel burette, comprising a burette body (1), characterized in that: The top of the burette body (1) is detachably provided with a dust cover (2), the surface of the burette body (1) is provided with a fixing plate (3), the surface of the dust cover (2) is fixed with a limit strip (4), one side of the limit strip (4) is provided with a release groove (5), both sides of the fixing plate (3) are provided with storage grooves (6), a sliding plate (7) is slidably inserted in the interior of the storage groove (6), a sliding rod (8) is fixed to one side of the interior of the storage groove (6), the sliding rod (8) and the sliding plate (7) are slidably inserted, a spring (9) is surrounded on the surface of the sliding rod (8), one end of the spring (9) is fixed to one side of the interior of the storage groove (6), and the other end of the spring (9) is fixed to one side of the sliding plate (7), a communication port (10) is provided on one side of the interior of the storage groove (6), a limit column (11) is fixed to one side of the sliding plate (7), and the limit column (11) and the communication port (10) are slidably inserted.

2. A novel burette according to claim 1, characterized in that: A fixing ring (12) is fixed on the surface of the burette body (1), the surface of the fixing ring (12) is fixed to one side of the fixing plate (3), a connecting belt (13) is fixed to the surface of the fixing ring (12), and the other end of the connecting belt (13) is fixed to the surface of the dust cover (2).

3. A novel burette according to claim 1, characterized in that: The outer wall surface of the dust cover (2) is provided with two air vents (14).

4. A novel burette according to claim 1, characterized in that: The surface of the burette body (1) is provided with a plurality of scale bars (15).

5. A novel burette according to claim 1, characterized in that: The dust cover (2) is made of plastic material and is not easily deformed in an environment with a temperature of -20°C to 70°C, thus meeting the laboratory's requirement of a temperature of 20±1°C.

6. A novel burette according to claim 1, characterized in that: The dust cover (2) is also not easy to deform in an environment with a humidity of 5% to 95%° C., and also meets the laboratory's requirement for a humidity of 30% to 70%.

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