Burette calibration device

Abstract

The utility model provides a burette calibration device which comprises an iron stand, a lifting mechanism is arranged at the top of the iron stand, the lifting mechanism comprises a thread bushing capable of moving up and down, and the top end of the thread bushing is fixedly connected with an operation table; a threaded rod is rotationally connected to the middle of the top wall of the operation table, a threaded block is in threaded connection with the outer portion of the threaded rod, extending blocks are connected to the two sides of the threaded block, and a clamp is installed at one end of each extending block; and a plurality of mounting grooves are formed in the bottom of the iron stand. The burette fixing device is reasonable in design, the overall height of the burette fixing device can be adjusted through arrangement and cooperation of the threaded sleeve, the motor, the internal threaded column, the fixing rod, the connecting rod and the connecting rod, corresponding experimenters can operate the burette fixing device conveniently, the position of a burette can be further adjusted through cooperation of the threaded rod, the threaded block, the extending block and the clamp, and the burette fixing device is convenient to use. Therefore, the visual line of the tester and the visual line of the experimenter are head-up, so that the experimenter can read the tester conveniently.

Description

Technical Field

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

[0002] The burette is a long, thin tubular container with a stopcock at one end and a scale indicating the measurement. Generally, the scale readings at the top are smaller, and the readings near the bottom are larger.

[0003] The inventor discovered the following defects during the operation of the specific embodiment:

[0004] When using the existing burette, the experimenter cannot see the position of the burette reading at eye level due to the height, which makes it difficult to operate; secondly, the iron frame at the bottom is placed on the table. When it needs to be moved, the experimenter needs to lift the entire operating device and move it to another position. In addition, during use, the device is prone to inaccurate readings due to instability.

[0005] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Utility Model Content

[0006] 1. Technical problems to be solved by the utility model:

[0007] The utility model provides a burette calibration device to solve the technical problems existing in the above-mentioned background technology.

[0008] 2. Technical solution:

[0009] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a burette calibration device, comprising an iron frame, a lifting mechanism is provided on the top of the iron frame, the lifting mechanism comprises a threaded sleeve that can move up and down, and the top of the threaded sleeve is fixedly connected to an operating table; a threaded rod is rotatably connected to the middle of the top wall of the operating table, and a threaded block is threadedly connected to the outside of the threaded rod, and extension blocks are connected to both sides of the threaded block, and a clamp is installed at one end of the extension block; a plurality of installation grooves are opened at the bottom of the iron frame, and moving wheels are installed on the inner side of the installation grooves, and an adsorption mechanism is provided on the inner side of the iron frame close to the moving wheels.

[0010] Furthermore, the lifting mechanism also includes a motor, which is installed in the middle of the top wall of the iron frame. The output end of the motor is connected to an internal threaded column, and the internal threaded column and the threaded sleeve are threadedly matched and connected. Fixed rods are fixedly connected at the four corners of the top wall of the iron frame. A sliding sleeve is provided on the external sliding sleeve of the fixed rod. The threaded sleeve and the four sliding sleeves are connected by a connecting rod, and the top of the connecting rod is connected to the bottom wall of the operating table.

[0011] Furthermore, through grooves are provided at the four corners on the inner side of the iron frame, and the adsorption mechanism includes a connecting rod, which vertically passes through the inner side of the through groove, the bottom end of the connecting rod is connected to a suction cup, the top end of the connecting rod is connected to a limiting block, a limiting groove is provided on the upper part of one side of the connecting rod, and a plurality of sliding grooves are correspondingly provided on the top of the iron frame, an L-shaped sliding rod is slidably connected to the inner side of the sliding groove, and the lateral end of the L-shaped sliding rod is plugged into and matched with the inner side of the limiting groove.

[0012] Furthermore, the top wall of the operating table is fixedly connected with side plates on both sides of the threaded rod, a sliding cavity is opened inside the side plate, and one end of the extension block slides up and down inside the sliding cavity.

[0013] Furthermore, the top end of the side plate is fixedly connected to the top plate, the upper end of the threaded rod passes through the inner side of the top plate, the threaded rod cooperates with the inner thread of the top plate, and the top end of the threaded rod is symmetrically connected to adjustment rods on both sides.

[0014] 3. Beneficial effects:

[0015] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0016] The utility model has a reasonable design. By utilizing the arrangement and coordination between the threaded sleeve, the motor, the internal threaded column, the fixing rod, the connecting rod and the connecting rod, the overall height of the device can be adjusted, so that it is more convenient for corresponding experimenters to operate. In addition, by utilizing the arrangement between the threaded rod, the threaded block, the extension block and the clamp, the position of the burette can be further adjusted so that it is level with the line of sight of the experimenter, so that the experimenter can read the burette conveniently.

[0017] By coordinating the installation groove and the moving wheels, the position of the device can be moved, which is convenient for moving it on the desktop. In addition, by coordinating the connection rod, suction cup, limit block, limit groove, slide groove and L-shaped slide rod, the bottom of the device can be fixed after the movement, so that the device can be more firmly adsorbed on the desktop, maintaining the stability of the device during use, and making the reading of the burette more accurate.

[0018] It should be noted that the structures not introduced in the present invention are not related to the design points and improvement directions of the present invention, and are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the lifting mechanism structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the iron frame platform of the utility model;

[0022] Figure 4 It is a partial cross-sectional enlarged structural schematic diagram of the iron frame platform of the utility model.

[0023] Reference numerals:

[0024] 1. Iron frame; 101. Mounting slot; 102. Through slot; 103. Slide slot; 104. L-shaped slide bar; 2. Lifting mechanism; 201. Threaded sleeve; 202. Motor; 203. Internal threaded column; 204. Fixed rod; 205. Slide sleeve; 206. Connecting rod; 3. Operating table; 4. Threaded rod; 401. Adjusting rod; 5. Threaded block; 6. Extension block; 7. Clamp; 8. Moving wheel; 9. Adsorption mechanism; 901. Connecting rod; 902. Suction cup; 903. Limit block; 904. Limiting slot; 10. Side panel; 1001. Sliding cavity; 11. Top panel. DETAILED DESCRIPTION

[0025] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0029] Refer to the attached Figure 1-4 A burette calibration device comprises an iron frame 1, a lifting mechanism 2 is arranged on the top of the iron frame 1, the lifting mechanism 2 comprises a threaded sleeve 201 which can be moved up and down, and an operating table 3 is fixedly connected to the top of the threaded sleeve 201; a threaded rod 4 is rotatably connected to the middle of the top wall of the operating table 3, a threaded block 5 is threadedly connected to the outer side of the threaded rod 4, extension blocks 6 are connected to both sides of the threaded block 5, and a clamp 7 is installed at one end of the extension block 6; a plurality of mounting grooves 101 are opened at the bottom of the iron frame 1, a moving wheel 8 is installed inside the mounting groove 101, and an adsorption mechanism 9 is arranged on the inner side of the iron frame 1 close to the moving wheel 8.

[0030] In this embodiment, the lifting mechanism 2 also includes a motor 202, which is installed in the middle of the top wall of the iron frame 1. The output end of the motor 202 is connected to an internal threaded column 203, and the internal threaded column 203 is threadedly matched with the threaded sleeve 201. The four corners of the top wall of the iron frame 1 are fixedly connected with a fixed rod 204, and the external sliding sleeve of the fixed rod 204 is provided with a sliding sleeve 205. The threaded sleeve 201 and the four sliding sleeves 205 are connected by a connecting rod 206, and the top of the connecting rod 206 is connected to the bottom wall of the operating table 3.

[0031] It should be noted that by turning on the motor 202 to drive the internal threaded column 203 to rotate, the threaded sleeve 201 moves vertically. While the threaded sleeve 201 moves vertically, it also drives the connecting rod 206 and the multiple sliding sleeves 205 connected thereto to move vertically together on the outside of the fixed rod 204, so that the overall height of the operating table 3 can be adjusted, which is convenient for the experimenter to look straight ahead according to the reading of the burette, and facilitates reading and operation.

[0032] In this embodiment, through grooves 102 are opened at the four corners on the inner side of the iron frame 1, and the adsorption mechanism 9 includes a connecting rod 901, which vertically passes through the inner side of the through groove 102, and the bottom end of the connecting rod 901 is connected to a suction cup 902, and the top of the connecting rod 901 is connected to a limiting block 903. A limiting groove 904 is opened on the upper part of one side of the connecting rod 901, and a plurality of sliding grooves 103 are correspondingly opened on the top of the iron frame 1, and an L-shaped sliding rod 104 is slidably connected to the inner side of the sliding groove 103, and the lateral end of the L-shaped sliding rod 104 is plugged into the inner side of the limiting groove 904.

[0033] It should be noted that, by moving the connecting rod 901 downward, the suction cup 902 is driven to move downward, so that the suction cup 902 is adsorbed on the desktop, and the lower surface of the limit block 903 is limited on the upper surface of the iron frame 1. The suction cup 902 is completely adsorbed on the desktop, and the iron frame 1 can be stably placed on the desktop. When the device needs to be moved on the desktop, the suction cup 902 can be manually operated to separate the adsorption of the desktop, and then the connecting rod 901 is moved upward, so that the limit block 903 is upward. When the suction cup 902 moves to the inner side of the through groove 102, the L-shaped slide bar 104 is slid at the same time, so that it moves toward the position of the connecting rod 901 on the inner side of the slide groove 103, so that the lateral end of the L-shaped slide bar 104 is inserted into the inner side of the limit groove 904, thereby limiting the connecting rod 901.

[0034] In this embodiment, the top wall of the operating table 3 is fixedly connected with side plates 10 on both sides of the threaded rod 4. A sliding cavity 1001 is opened inside the side plate 10, and one end of the extension block 6 slides up and down inside the sliding cavity 1001.

[0035] It should be noted that the threaded rod 4 drives the threaded block 5 threadedly connected thereto to move vertically, and the threaded block 5 drives the extension block 6 to slide vertically inside the sliding cavity 1001, so that the clamped burette can move up and down stably.

[0036] In this embodiment, the top of the side plate 10 is fixedly connected to the top plate 11, the upper end of the threaded rod 4 passes through the inner side of the top plate 11, the threaded rod 4 is threadedly matched with the inner side of the top plate 11, and the top of the threaded rod 4 is symmetrically connected to the adjustment rods 401 on both sides.

[0037] It should be noted that the threaded rod 4 can be driven to rotate inside the top plate 11 by rotating the adjusting rod 401, which is convenient for operation.

[0038] The working principle of the utility model is as follows: by moving the connecting rod 901 downward, the suction cup 902 is driven to move downward, so that the suction cup 902 is adsorbed on the desktop, the lower surface of the limit block 903 is limited on the upper surface of the iron frame 1, the suction cup 902 is completely adsorbed on the desktop, and the iron frame 1 can be stably placed on the desktop, the burette is clamped and fixed by the clip 7, and the threaded rod 4 is driven to rotate by rotating the adjusting rod 401, and the threaded rod 4 drives the threaded block 5 connected with it to move vertically, and the threaded block 5 drives the extension block 6 to slide vertically inside the sliding cavity 1001, so that the clamped and fixed burette can be adjusted up and down, and the internal threaded column 203 can be driven to rotate by turning on the motor 202, so that the threaded sleeve 201 moves vertically, and the threaded sleeve 201 moves vertically at the same time The connecting rod 206 and the multiple sliding sleeves 205 connected thereto are driven to move vertically together on the outside of the fixed rod 204, so that the overall height of the operating table 3 can be adjusted, which is convenient for the experimenter to look straight according to the reading of the burette, and is convenient for reading and operation; when the device needs to be moved on the desktop, the suction cup 902 can be manually operated to separate the adsorption of the desktop, and then the connecting rod 901 is moved upward, so that the limit block 903 is upward, and when the suction cup 902 moves to the inside of the through groove 102, the L-shaped slide bar 104 is slid at the same time, so that it moves to the position of the connecting rod 901 on the inside of the slide groove 103, so that the lateral end of the L-shaped slide bar 104 is inserted into the inside of the limit groove 904, to limit the connecting rod 901, and then the device is moved on the desktop by the moving wheel 8.

[0039] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A burette calibration device, characterized in that: The invention comprises an iron frame (1), wherein a lifting mechanism (2) is provided on the top of the iron frame (1), wherein the lifting mechanism (2) comprises a threaded sleeve (201) which can be moved up and down, wherein the top of the threaded sleeve (201) is fixedly connected to an operating table (3); a threaded rod (4) is rotatably connected to the middle of the top wall of the operating table (3), wherein the threaded rod (4) is externally threadedly connected to a threaded block (5), wherein both sides of the threaded block (5) are connected to extension blocks (6), wherein one end of the extension block (6) is installed with a clamp (7); a plurality of mounting grooves (101) are provided on the bottom of the iron frame (1), wherein moving wheels (8) are installed inside the mounting grooves (101), and an adsorption mechanism (9) is provided on the inner side of the iron frame (1) close to the moving wheels (8).

2. A burette calibration device according to claim 1, characterized in that: The lifting mechanism (2) further comprises a motor (202), wherein the motor (202) is mounted at the middle of the top wall of the iron frame (1), an output end of the motor (202) is connected to an internal thread column (203), the internal thread column (203) and the threaded sleeve (201) are threadedly matched and connected, four corners of the top wall of the iron frame (1) are fixedly connected to fixed rods (204), a sliding sleeve (205) is provided on the external sliding sleeve of the fixed rod (204), the threaded sleeve (201) and the four sliding sleeves (205) are connected via a connecting rod (206), and the top end of the connecting rod (206) is connected to the bottom wall of the operating table (3).

3. A burette calibration device according to claim 2, characterized in that: The four corners on the inner side of the iron frame (1) are all provided with through grooves (102), and the adsorption mechanism (9) comprises a connecting rod (901), the connecting rod (901) vertically passes through the inner side of the through groove (102), the bottom end of the connecting rod (901) is connected to a suction cup (902), the top end of the connecting rod (901) is connected to a limiting block (903), and a limiting groove (904) is provided on the upper part of one side of the connecting rod (901), and a plurality of slide grooves (103) are correspondingly provided on the top of the iron frame (1), and an L-shaped slide rod (104) is slidably connected to the inner side of the slide groove (103), and the lateral end of the L-shaped slide rod (104) is plugged into the inner side of the limiting groove (904).

4. A burette calibration device according to claim 3, characterized in that: The top wall of the operating table (3) is fixedly connected to side plates (10) on both sides of the threaded rod (4), a sliding cavity (1001) is provided inside the side plate (10), and one end of the extension block (6) slides up and down inside the sliding cavity (1001).

5. A burette calibration device according to claim 4, characterized in that: The top end of the side plate (10) is fixedly connected to the top plate (11), the upper end of the threaded rod (4) passes through the inner side of the top plate (11), the threaded rod (4) is threadedly engaged with the inner side of the top plate (11), and the top ends of the threaded rod (4) are symmetrically connected to adjustment rods (401).

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