Dual-function adjustable volumetric flask placing rack
By designing a dual-function adjustable volumetric bottle placing rack, using the combined structure of the base plate, sleeve rod and lift plate, the existing placement rack cannot meet the dual requirements of volumetric bottle cleaning and fixed volume, achieving cost saving and convenient operation.
Patent Information
- Application Number
- CN202421459061.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The existing volumetric flask placement rack cannot meet the dual needs during the volumetric flask cleaning and drying process, resulting in the need to replace different brackets, increasing the cost of experimental equipment.
A dual-function adjustable volumetric flask placement rack is designed, adopting a combined structure of bottom plate, sleeve rod and lift plate. Through the height adjustment of the lift plate, it can be used for both the dry placement of the volumetric flask, and the placement and transfer of the volumetric flask containing the solution.
It realizes the placement requirements of volumetric flasks after cleaning and after volumetric drying and volume fixation through a placement rack, saves experimental equipment costs, and realizes flexible adjustment and positioning of the lift plate through the structure of supporting springs and serrated racks.
Smart Images
Figure CN222766364U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of experimental instrument equipment, and particularly relates to a dual-function adjustable volumetric flask placing rack. Background Art
[0002] A volumetric flask is a common dissolution instrument in laboratories. It mainly consists of a spherical body with a horizontal bottom and a bottleneck that extends coaxially and vertically upward from the body. The bottleneck is provided with scale lines, and the top of the bottleneck is the mouth of the volumetric flask. After a certain mass of solute is added to the volumetric flask, solvent is added thereto to fully dissolve it until the solvent level reaches the scale line, and a solution of the expected concentration is prepared.
[0003] After pouring out the prepared solution in the volumetric flask, the volumetric flask needs to be cleaned and dried. During the drying process, the volumetric flask is suspended and placed upside down on a drying rack so that the residual cleaning water in the bottle can fully drip out and the high-temperature drying gas can smoothly enter the bottle cavity upward. When the volumetric flask is used again for volume determination, it is removed from the drying rack and reagents are added to it. In order to prevent the volumetric flask from being accidentally knocked over when placed on the laboratory bench, the volumetric flask also needs to be placed on the mounting rack. Since the volumetric flask is required to be placed upright and the bottom of the volumetric flask needs to be supported, the previous drying rack is no longer applicable and can only be replaced with a bracket with a different structure from the drying rack, which invisibly increases the cost of experimental equipment. Summary of the invention
[0004] In order to solve the above technical problems, the utility model provides a dual-function adjustable volumetric bottle placement rack, comprising a bottom plate, a sleeve rod and a lifting plate.
[0005] The lower surface of the bottom plate is horizontally arranged. When the upper surface of the bottom plate extends from left to right, it tilts downward first and then upward, thereby forming two inclined surfaces that are symmetrical and connected to each other on the left and right sides. Each inclined surface is horizontally arranged in the front and rear directions.
[0006] A sleeve rod is vertically extended upward at each corner of the bottom plate, and the lifting plate located directly above the bottom plate can be reciprocated vertically and slidably mounted on each sleeve rod at the same time. When the lifting plate extends from left to right, it first tilts downward as a whole and then tilts upward as a whole, thereby forming two inclined plates that are symmetrical and connected to each other on the left and right sides. Each inclined plate is horizontally arranged in the front and back directions. The upper and lower plate surfaces of the left inclined plate are parallel to the left inclined surface, and the upper and lower plate surfaces of the right inclined plate are parallel to the right inclined surface.
[0007] A plurality of left receiving holes are evenly arranged at intervals in the front-to-back direction on the upper edge of the left inclined plate, which are connected to the upper and lower plate surfaces of the left inclined plate and are axially perpendicular to the upper and lower plate surfaces of the left inclined plate. The hole cavities of each left receiving hole extend to the left along the left inclined plate to form a left channel connected to the upper and lower plate surfaces of the left inclined plate. The end of the left channel away from the left receiving hole to which it belongs along its own length direction is connected to the left plate edge of the left inclined plate. The size of the left channel in the width direction is slightly larger than the outer diameter of the bottleneck of the volumetric flask. The aperture of the left receiving hole is larger than the outer diameter of the bottleneck of the volumetric flask and smaller than the outer diameter of the spherical structure of the bottle body of the volumetric flask.
[0008] A plurality of right receiving holes are evenly arranged at intervals in the front-to-back direction on the upper edge of the right inclined plate, which are connected to the upper and lower plate surfaces of the right inclined plate and are axially perpendicular to the upper and lower plate surfaces of the right inclined plate. The hole cavities of each right receiving hole extend rightward along the right inclined plate to form a right channel connected to the upper and lower plate surfaces of the right inclined plate. The end of the right channel away from the right receiving hole to which it belongs along its own length direction is connected to the right plate edge of the right inclined plate. The size of the right channel in the width direction is slightly larger than the outer diameter of the bottleneck of the volumetric flask. The aperture of the right receiving hole is larger than the outer diameter of the bottleneck of the volumetric flask and smaller than the outer diameter of the spherical structure of the bottle body of the volumetric flask.
[0009] Each sleeve rod is coaxially sleeved with a support spring between the bottom plate and the lifting plate. The support spring only contacts and abuts against the bottom plate downwards and only contacts and abuts against the lifting plate upwards.
[0010] Each sleeve rod is provided with a plurality of positioning holes which are arranged evenly at intervals along its length direction and whose axial direction is horizontal in the front-back direction and whose cavity structure matches the saw teeth on the sawtooth bar. By matching the sawtooth bar passing through the positioning holes, the lifting plate is prevented from moving upward on the sleeve rod based on the elastic support of the support spring.
[0011] The sawtooth bar is a plastic profile that can undergo elastic deformation. When the sawtooth bar is coaxially matched and penetrated into the positioning hole, the sawtooth surface faces upward.
[0012] The beneficial effect of the utility model is that when the damp volumetric bottle after washing is placed on the placement rack of the present invention and put into the oven for drying, the placement rack is not equipped with any blocking sawtooth bar, and the lifting plate is not restricted by the blocking member, and is pushed up relatively high by the supporting springs. After the volumetric bottle is placed upside down and buckled into the left receiving hole (right receiving hole) on the lifting plate, the downward-facing bottle mouth of the volumetric bottle is upwardly away from the bottom plate for a distance, and at this time, the circumference of the left receiving hole (right receiving hole) is circumferentially against and supports the bottle body of the volumetric bottle;
[0013] After drying, each volumetric flask is taken down from the placement rack, and solutions are prepared in these volumetric flasks. When these volumetric flasks are to be re-installed on the placement rack, the lifting plate on the placement rack is first pressed down vertically so that it moves down on each sleeve rod to a bottom plate relatively close to the bottom, and a sawtooth bar is inserted horizontally from back to front into the corresponding positioning hole on each sleeve rod to prevent the lifting plate from rising again under the rebound action of each supporting spring; at this time, the volumetric flask is passed through the left channel (right channel) by its bottleneck with the bottle mouth facing upward and embedded into the left accommodating hole (right accommodating hole) of the lifting plate (the height of the lifting plate after the previous downward movement is controlled to be positioned downward close to the bottle body of the lower part of each volumetric flask at this time, but not touching the bottle body), and at this time, each volumetric flask falls stably on the upper surface of the bottom plate.
[0014] In summary, only one placement rack is needed. By adjusting the height of the lifting plate, it can be used to dry and place the wet volumetric flask after washing, and can also be used to place and transfer the volumetric flask after filling with solution, which saves and simplifies the cost of experimental equipment. In addition, this scheme only uses the support spring and the sawtooth bar to achieve the adjustment and positioning of the lifting plate. The structure is simple and easy to operate. The sawtooth bar has a stop function. After being inserted into the positioning hole, it can be stably fitted in the positioning hole. When not being pulled in a directional manner (horizontally from back to front), the sawtooth bar remains motionless in the positioning hole, ensuring that the lifting plate is pressed down to keep the height of the lifting plate unchanged. A plurality of positioning holes are arranged at intervals along the height direction on the sleeve rod, so that the lifting plate can be adjusted to different height positions.
[0015] It can be directly seen from the structure of this scheme that a row of volumetric bottles can be arranged on the left and right sides of the rack, and when placing the bottles (fitting the volumetric bottles onto the rack), the volumetric bottles are directly embedded or inserted into the left receiving hole (right receiving hole) from the outside or above, which is easy to operate. In order to avoid the risk of the volumetric bottles falling or being damaged due to the bottleneck of the volumetric bottles sliding out of the left receiving hole (right receiving hole) through the left channel (right channel) during the transfer process of the rack equipped with the volumetric bottles, this scheme sets the upper surface of the bottom plate used to support the bottom volumetric bottles to two inclined surfaces on the left and right sides that are inclined inwardly. In this way, in the process of transferring the rack equipped with the volumetric bottles by hand, as long as the rack is basically placed upright and not tilted too much to the left and right, the volumetric bottles on the rack can be prevented from slipping. Correspondingly, the lifting plate is also set to two inclined plates on the left and right sides that are inclined inwardly. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of a dual-function adjustable volumetric bottle placement rack of the utility model;
[0017] Figure 2 It is a structural schematic diagram of a volumetric bottle that has been damp after cleaning and is mounted on the dual-function adjustable volumetric bottle placement rack of the utility model for drying;
[0018] Figure 3 It is a structural schematic diagram of a volumetric flask filled with a solution and fixed to volume and assembled on the dual-function adjustable volumetric flask placement rack of the utility model;
[0019] Among them, 100 is a placement rack, 10 is a bottom plate, 20 is a sleeve rod, 21 is a support spring, 22 is a positioning hole, 23 is a blocking member, 30 is a lifting plate, 31 is a left receiving hole, 32 is a left channel, 33 is a right receiving hole, 34 is a right channel, 40 is a volumetric bottle, 41 is a bottle body, and 42 is a bottleneck. DETAILED DESCRIPTION
[0020] It should be noted that the directional qualifiers "left", "right", "front", and "rear" used in the description of the present invention refer to the attached Figure 2 , 3 The directions "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0021] As attached Figure 1 As shown, the dual-function adjustable volume bottle placement rack 100 of the utility model includes a bottom plate 10, a sleeve rod 20 and a lifting plate 30.
[0022] The lower surface of the bottom plate 10 is horizontally arranged, and the upper surface of the bottom plate 10 is inclined downward and then upward during the extension from left to right, thereby forming two inclined surfaces that are symmetrical to each other and connected as a whole. The two inclined surfaces are horizontally arranged in the front and back directions, and the bottom plate 10 as a whole is vertically projected downward on the horizontal plane to be a rectangular shape.
[0023] The four corners of the bottom plate 10 are respectively provided with sleeve rods 20 extending vertically upward. The lifting plate 30 located directly above the bottom plate 10 can be reciprocated vertically and slidably mounted on each sleeve rod 20 at the same time. The lifting plate 30 is first tilted downward as a whole and then tilted upward as a whole during its extension from left to right, thereby forming two inclined plates that are symmetrical to each other and connected as one body. The two inclined plates are horizontally arranged in the front and back directions. The upper and lower plate surfaces of the left inclined plate are parallel to the left inclined surface (the inclination angle relative to the horizontal plane is 20°), and the upper and lower plate surfaces of the right inclined plate are parallel to the right inclined surface (the inclination angle relative to the horizontal plane is 20°).
[0024] A plurality of left receiving holes 31 are evenly arranged at intervals in the front-to-back direction on the upper edge of the left inclined plate, which are connected to the upper and lower plate surfaces of the left inclined plate and are axially perpendicular to the upper and lower plate surfaces of the left inclined plate. The cavity of each left receiving hole 31 extends to the left along the left inclined plate to form a left channel 32 connected to the upper and lower plate surfaces of the left inclined plate. The left channel 32 is connected to the left plate edge of the left inclined plate away from one end of the left receiving hole 31 connected thereto along its own length direction. The size of the left channel 32 in the width direction is larger than the outer diameter of the bottleneck 42 of the volumetric flask 40 and smaller than the aperture of the left receiving hole 31. The aperture of the left receiving hole 31 is smaller than the outer diameter of the spherical structure of the bottle body 41 of the volumetric flask 40.
[0025] A plurality of right receiving holes 33 are evenly arranged at intervals in the front-to-back direction on the upper edge of the right inclined plate, which are connected to the upper and lower plate surfaces of the right inclined plate and are axially perpendicular to the upper and lower plate surfaces of the right inclined plate. The cavity of each right receiving hole 33 extends rightward along the right inclined plate to form a right channel 34 connecting the upper and lower plate surfaces of the right inclined plate. The right channel 34 is connected to the right plate edge of the right inclined plate away from one end of the right receiving hole 33 connected thereto along its own length direction. The size of the right channel 34 in the width direction is larger than the outer diameter of the bottleneck 42 of the volumetric flask 40 and smaller than the aperture of the right receiving hole 33. The aperture of the right receiving hole 33 is smaller than the outer diameter of the spherical structure of the bottle body 41 of the volumetric flask 40.
[0026] Each sleeve rod 20 is coaxially sleeved with a support spring 21 between the bottom plate 10 and the lifting plate 30. The support spring 21 only contacts and abuts against the bottom plate 10 downwards and only contacts and abuts against the lifting plate 30 upwards.
[0027] A plurality of positioning holes 22 are arranged uniformly and at intervals on each sleeve rod 20 along its length direction, and the positioning holes 22 of the four sleeve rods 20 correspond to each other: the positioning holes 22 corresponding to each other on the four sleeve rods 20 are opened at the same horizontal height position, and each positioning hole 22 is horizontally arranged in the front-to-back direction in the axial direction. The cavity structure of the positioning hole 22 corresponds to the sawtooth on the sawtooth bar serving as the blocking member 23, and the sawtooth bar is coaxially arranged in the positioning hole 22, thereby blocking the lifting plate 30 from moving upward on the sleeve rod 20 based on the upward elastic force of the support spring 21, and at this time, the sawtooth surface of the sawtooth bar is facing upward.
[0028] When the damp volumetric flask 40 after cleaning is placed on the placement rack 100 of the present invention and put into the oven for drying, the placement rack 100 is not equipped with any blocking member 23 serrated strips. At this time, the lifting plate 30 is not restricted by the blocking member 23 and is pushed up relatively high by the supporting springs 21. After the volumetric flask 40 is turned upside down and buckled into the left receiving hole 31 (right receiving hole 33) on the lifting plate 30, the downward-facing bottle mouth of the volumetric flask 40 is upwardly away from the bottom plate 10 for a distance. At this time, the circumference of the left receiving hole 31 (right receiving hole 33) is circumferentially against and supports the bottle body 41 of the volumetric flask 40, as shown in the attached figure. Figure 2 ;
[0029] After drying, each volumetric flask 40 is taken off the placement rack 100, and solutions are prepared in these volumetric flasks 40. When these volumetric flasks 40 are to be re-installed on the placement rack 100, the lifting plate 30 on the placement rack 100 is first vertically pressed down to make it move down to the bottom plate 10 relatively close to the bottom on each sleeve rod 20, and the sawtooth strip is inserted horizontally from back to front in the corresponding positioning hole 22 on each sleeve rod 20 to prevent the lifting plate 30 from rising again under the rebound effect of each support spring 21; at this time, the bottle mouth of the volumetric flask 40 is passed through the left channel 32 (right channel 34) by its bottleneck 42 with the bottle mouth facing upward and embedded in the left receiving hole 31 (right receiving hole 33) of the lifting plate 30 (the height of the lifting plate 30 after the previous downward movement is controlled to be positioned downward close to the bottle body 41 at the lower part of each volumetric flask 40 at this time, but not touching the bottle body 41). At this time, each volumetric flask 40 stably falls on the upper plate surface of the bottom plate 10, as shown in the attached Figure 3 .
[0030] In summary, only one placement rack is needed. By adjusting the height of the lifting plate 30, it can be used to dry and place the wet volumetric flask 40 after washing, and can also be used to place and transfer the volumetric flask 40 after filling with solution, which saves and simplifies the cost of experimental equipment. In addition, this scheme only realizes the adjustment and positioning of the lifting plate 30 through the support spring 21 and the sawtooth bar, with a simple structure and convenient operation. Among them, the sawtooth bar has a stop function, and can be stably fitted in the positioning hole 22 after being inserted into the positioning hole 22. When it is not pulled in a directional manner (horizontally from back to front), the sawtooth bar remains motionless in the positioning hole 22, ensuring that the lifting plate 30 is pressed down to keep the height of the lifting plate 30 unchanged; a plurality of positioning holes 22 are arranged on the sleeve rod 20 at intervals along the height direction, so that the lifting plate 30 can be adjusted to different height positions.
[0031] It can be directly seen from the structure of this scheme that a row of volumetric bottles 40 can be arranged on the left and right sides of the rack 100, and when the bottle is placed (the volumetric bottle 40 is matched and installed on the rack 100), the volumetric bottle 40 is directly embedded or inserted into the left receiving hole 31 (right receiving hole 33) from the outside or above, which is easy to operate. In order to avoid the risk of the volumetric bottle 40 falling or being damaged due to its bottleneck sliding out of the left receiving hole 31 (right receiving hole 33) through the left channel 32 (right channel 34) during the transfer process of the rack 100 equipped with the volumetric bottle 40, this scheme sets the upper plate surface of the bottom plate 10 used to support the bottom volumetric bottle 40 to two inclined planes inclined inwardly, so that in the process of transferring the rack 100 equipped with the volumetric bottle 40, as long as the rack 100 is ensured to be basically placed upright and not tilted too much to the left and right, the volumetric bottle 40 on the rack 100 can be prevented from sliding off. Correspondingly, the lifting plate 30 is also set to two inclined plates inclined inwardly.
Claims
1. A dual-function adjustable volumetric bottle placement rack, characterized in that: The placement rack (100) comprises a bottom plate (10), a sleeve rod (20) and a lifting plate (30). The lower surface of the bottom plate (10) is arranged horizontally, and the upper surface of the bottom plate (10) first tilts downward and then tilts upward during the process of extending from left to right, thereby forming two inclined surfaces that are symmetrical to each other and connected as a whole. The sleeve rods (20) are respectively extended vertically upward at the corners of the bottom plate (10), and the lifting plate (30) located above the bottom plate (10) can be reciprocated vertically and slidably mounted on the sleeve rods (20) at the same time. In the process of extending from left to right, the lifting plate (30) first tilts downward as a whole and then tilts upward as a whole, thereby forming two inclined plates that are symmetrical to each other and connected as a whole. A plurality of left receiving holes (31) are arranged at intervals in the front-to-back direction on the upper edge of the left inclined plate, which are connected to the upper and lower plate surfaces of the left inclined plate and are axially perpendicular to the upper and lower plate surfaces of the left inclined plate. The hole cavity of each left receiving hole (31) extends leftward along the left inclined plate to form a left channel (32) connected to the upper and lower plate surfaces of the left inclined plate. The left channel (32) is connected to the left plate edge of the left inclined plate away from one end of the left receiving hole (31) connected thereto along its own length direction. A plurality of right receiving holes (33) are arranged at intervals in the front-to-back direction on the upper edge of the right inclined plate, which are connected to the upper and lower plate surfaces of the right inclined plate and are axially perpendicular to the upper and lower plate surfaces of the right inclined plate. The hole cavities of the right receiving holes (33) extend rightward along the right inclined plate to form right channels (34) connected to the upper and lower plate surfaces of the right inclined plate. The right channel (34) is connected to the right plate edge of the right inclined plate away from one end of the right receiving hole (33) connected thereto along its own length direction. Each sleeve rod (20) is coaxially sleeved with a support spring (21) between the bottom plate (10) and the lifting plate (30). A plurality of positioning holes (22) are arranged at intervals along the length direction of each sleeve rod (20), and a blocking member (23) inserted through the positioning hole is cooperated to block the lifting plate (30) from moving upward on the sleeve rod (20) based on the upward elastic force of the support spring (21).
2. The dual-function adjustable volumetric bottle placement rack according to claim 1, characterized in that: The inclined plane is horizontally arranged in the front and rear directions and upward directions.
3. The dual-function adjustable volumetric bottle placement rack according to claim 1, characterized in that: The inclined plate is horizontally arranged in the front and rear directions and upwards.
4. The dual-function adjustable volumetric bottle placement rack according to claim 1, characterized in that: The upper and lower plate surfaces of the left inclined plate are parallel to the inclined surface on the left side, and the upper and lower plate surfaces of the right inclined plate are parallel to the inclined surface on the right side.
5. The dual-function adjustable volumetric bottle placement rack according to claim 1, characterized in that: The dimension of the left channel (32) in the width direction is larger than the outer diameter of the bottleneck of the volumetric flask (40) and smaller than the aperture of the left receiving hole (31); the aperture of the left receiving hole (31) is smaller than the outer diameter of the spherical structure of the bottle body of the volumetric flask (40).
6. The dual-function adjustable volumetric bottle placement rack according to claim 1, characterized in that: The dimension of the right channel (34) in the width direction is larger than the outer diameter of the bottleneck of the volumetric flask (40) and smaller than the aperture of the right receiving hole (33); the aperture of the right receiving hole (33) is smaller than the outer diameter of the spherical structure of the bottle body of the volumetric flask (40).
7. The dual-function adjustable volumetric bottle placement rack according to claim 1, characterized in that: The support spring (21) only contacts and abuts against the bottom plate (10) downwards, and only contacts and abuts against the lifting plate (30) upwards.
8. The dual-function adjustable volumetric bottle stand according to claim 1, characterized in that: The blocking member (23) is a sawtooth bar, and the cavity structure of the positioning hole (22) matches the saw teeth on the sawtooth bar.
9. The dual-function adjustable volumetric bottle placement rack according to claim 8, characterized in that: The positioning hole (22) is horizontally arranged in the front-rear direction in the axial direction, and when the sawtooth bar is coaxially fitted and penetrated into the positioning hole (22), the sawtooth surface of the sawtooth bar faces upward.