CN112938866B - Auxiliary cork removal device for glass volumetric flasks for chemical laboratory - Google Patents

Abstract

The invention discloses an auxiliary cork pulling device for a glass volumetric flask for a chemical laboratory, which comprises a shell, wherein a through groove is formed in the middle of the shell, a plurality of clamping blocks used for clamping the volumetric flask are arranged at the lower end inside the through groove, the clamping blocks are driven by a rotating frame arranged on the lower end surface of the shell, two observation grooves and two ascending grooves are symmetrically formed in the upper end groove wall of the through groove respectively, a first clamping plate and a second clamping plate are slidably connected inside the two ascending grooves respectively, a first clamping frame and a second clamping frame used for clamping a bottle stopper are fixedly connected to the inner end surfaces of the first clamping plate and the second clamping plate respectively, the first clamping plate and the second clamping plate are both slidably connected with a sliding block through sliding grooves formed in the first clamping plate and the second clamping plate, the sliding block is connected with a screw rod in an engaged manner, and the screw rod is driven by a rotating rod arranged on the outer side wall of the upper end of the shell.

Description

Auxiliary cork removal device for glass volumetric flasks for chemical laboratory

technical field

The invention relates to the technical field of laboratory supplies, in particular to an auxiliary cork removal device for a glass volumetric flask used in a chemical laboratory.

Background technique

The volumetric flask is a thin-necked pear-shaped flat-bottomed volumetric container with a ground glass stopper and a marking line on the neck. The volumetric flask is an accurate device for preparing an accurate solution of a certain substance concentration. Generally, glass is used. Material, is a common experimental equipment in chemical, biological and other laboratories.

However, sometimes because the solution inside the volumetric flask is weakly alkaline or placed for a long time after configuration, the stopper is not easy to pull out. This situation is often encountered by laboratory staff and is very headache.

At present, manual plugging is generally used, but due to the shape of the plug and the shape of the volumetric flask, manual plugging is not easy to apply force, and the effect is very poor; and because it is made of glass, it is not convenient to use excessive vibration or percussion to implement. . If the value of the solution in the volumetric flask is low, the volumetric flask can be reserved by immersing the volumetric flask in hot water for a period of time, and then unplugging, but this method is likely to cause the solution inside the volumetric flask to be contaminated; Solutions with high value, such as some pharmaceutical intermediate standards, may be taken out by destroying the volumetric flask, but there is still a risk of glass breakage and contamination. In order to solve the above problems, the present invention provides an auxiliary cork removal device for glass volumetric flasks for chemical laboratories.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an auxiliary corking device for glass volumetric flasks for chemical laboratories, so as to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: an auxiliary cork removal device for glass volumetric flasks for chemical laboratories, comprising a shell, a through groove is opened in the middle of the shell, and a plurality of holes are arranged at the inner lower end of the through groove. A clamping block for holding a volumetric flask, the clamping block is driven by a rotating frame provided on the lower end surface of the casing, and two observation grooves and a rising groove are symmetrically opened on the upper end groove wall of the through groove, and the two ascending grooves are respectively symmetrical. A first clamp plate and a second clamp plate are respectively slidably connected to the inside of the groove, and the inner end surfaces of the first clamp plate and the second clamp plate are respectively fixedly connected with the first clamp frame and the second clamp frame for holding the bottle stopper. The first clamping plate and the second clamping plate are both slidably connected with a sliding block through the chute opened on the sliding block, and the sliding block is engaged with the screw rod, and the screw rod is driven by the rotating rod provided on the outer side wall of the upper end of the casing.

Preferably, a push rod is fixedly connected to the outer side wall of the clamping block, and the outer end of the push rod penetrates through the groove wall of the through groove and extends into the hollow groove opened in the shell, and is connected with the inner side of the swivel ring. The upper inclined groove is movably connected, the swivel ring is rotatably connected inside the empty groove, and the lower side wall of the empty groove is engaged with the swivel frame, and the swivel frame slides with the swivel ring through the fixed rod fixedly connected to the upper end of the swivel frame. connect.

Preferably, a circular plate is fixedly sleeved on the side wall of one end of the top rod located inside the hollow groove, and a spring is connected between the circular plate and the groove wall of the hollow groove.

Preferably, a heating block for heating the bottle body of the volumetric flask is provided inside the clamping block, and the heating block is connected to the external power supply with a conductive rod fixedly connected to the outer side wall of the heating block.

Preferably, the upper end of the screw extends to the inside of the ring groove opened on the outer side wall of the upper end of the casing and is fixedly connected with a gear, and the gear is rotatably connected to the inside of the ring groove with a gear ring meshing connection, and the outer side wall of the gear ring is engaged with a gear ring. Fixed connecting rod.

Preferably, the shape of the slider is an "I" shape, and a plurality of protrusions are fixedly connected to the inner side wall of the lower end thereof, and the lower side walls of the first clamp plate and the second clamp plate are located on both sides of the chute There are a plurality of card slots corresponding to the protrusions.

Compared with the prior art, the beneficial effects of the present invention are: through the cooperation between the rotating frame and the clamping block, the present invention realizes that rotating the rotating frame can make a plurality of clamping blocks move to the middle of the through groove at the same time, so that the capacity can be changed. The bottle neck is clamped, and through the cooperation between the first clamp frame and the second clamp frame, the first clamp frame and the second clamp frame can clamp the bottle stopper by pushing the first clamp plate and the second clamp plate. Then, the rotating rod can be rotated to make the first clamping plate and the second clamping plate drive the first clamping frame and the second clamping frame to rise respectively, so as to achieve the purpose of plugging.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a sectional view of the present invention;

Fig. 3 is the exploded view of the gear ring and the ring groove of the present invention;

4 is an exploded view of the first clamping frame and the second clamping frame of the present invention;

Fig. 5 is the connection schematic diagram of the first clamping frame and the second clamping frame of the present invention;

Fig. 6 is the structural representation of the lower side of the first splint and the second splint of the present invention;

Fig. 7 is the internal structure schematic diagram of dark groove of the present invention;

Fig. 8 is the connection schematic diagram of the chute and the ejector rod of the present invention;

Fig. 9 is the exploded view of swivel frame and swivel ring of the present invention;

10 is a schematic diagram of the use state of the first clamping frame and the second clamping frame of the present invention;

FIG. 11 is an enlarged view of part A of FIG. 2 of the present invention.

In the figure: 1. Shell, 2. Through groove, 3. Clamping block, 4. Turning frame, 5. Observation groove, 6. Rising groove, 7. First clamping plate, 8. Second clamping plate, 9. First clamping frame , 10, the second clamping frame, 11, chute, 12, slider, 13, screw, 14, rotating rod, 15, ejector rod, 16, empty groove, 17, swivel, 18, inclined groove, 19, fixed Rod, 20, Disc, 21, Spring, 22, Heating block, 23, Conductive rod, 24, Ring groove, 25, Gear, 26, Gear ring, 27, Protrusion, 28, Slot, 29, Conductive ring, 30. Connecting groove, 31, through hole, 32, dark groove, 33, giving way groove, 34, stopper handle, 35, bottle stopper.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-11, the present invention provides a technical solution: an auxiliary cork removal device for a glass volumetric flask used in a chemical laboratory, comprising an outer casing 1, and a through groove 2 is opened in the middle of the outer casing 1. The bottle neck can be inserted into the interior of the through groove 2, and the inner lower end of the through groove 2 is provided with a plurality of clamping blocks 3 for clamping the volumetric flask. The inside of the clamp block 3 is made of hard material, and its exterior is covered with a layer of soft rubber. While the clamp block 3 stably clamps the volumetric flask, damage to the volumetric flask can be avoided. Some rotating frames 4 are driven, and rotating the rotating frame 4 can make a plurality of clamping blocks 3 move to the middle of the through groove 2 at the same time, so that the clamping blocks 3 clamp the volumetric flask. There are two observation grooves 5 and two ascending grooves 6. The two observation grooves 5 and the two ascending grooves 6 are distributed in turn on the groove wall of the through groove 2. The interiors of the two ascending grooves 6 are respectively slidably connected with a first splint. 7 and the second clamping plate 8, the inner end surfaces of the first clamping plate 7 and the second clamping plate 8 are respectively fixedly connected with the first clamping frame 9 and the second clamping frame 10 for holding the bottle stopper 35, the first clamping frame 9 And the shape of the second clip frame 10 is "U" shape, the thickness of the vertical rod of the first clip frame 9 is greater than the thickness of the vertical rod of the second clip frame 10, and the thickness of the closed end of the first clip frame 9 is equal to the closed end of the second clip frame 10. The thickness of the end, the two vertical rods of the second clamping frame 10 can be inserted into the communication grooves 30 (as shown in FIG. and one end of the groove wall are communicated with the outside world, after the second clamping frame 10 is inserted into the first clamping frame 9, the cross bar on the second clamping frame 10 and the cross bar on the first clamping frame 9 can cooperate with each other to clamp the bottle stopper In the upper part of the 35, the second clamping plate 8 is provided with a space-saving slot 33, which can smoothly move the first clamping frame 9 to the second clamping plate 8 (as shown in FIG. 5), the first clamping plate 7 and the second clamping plate 8. The splint 8 is slidably connected to a sliding block 12 through the chute 11 opened on it. The sliding block 12 is meshed and connected with the screw rod 13. When the rod 14 rotates around the casing 1, the screw rod 13 can be rotated, and the rotation of the screw rod 13 can cause the corresponding slider 12 to simultaneously drive the first clamping plate 7 and the second clamping plate 8 to rise.

Specifically, a push rod 15 is fixedly connected to the outer side wall of the clamping block 3 , and the outer end of the push rod 15 penetrates through the groove wall of the groove 2 and extends into the hollow groove 16 opened in the casing 1 , and It is movably connected with the inclined groove 18 opened on the inner side of the swivel ring 17, and the swivel ring 17 is rotatably connected in the empty groove 16. The number of the inclined grooves 18 is the same as the number of the clamping blocks 3, and the swivel ring is rotated clockwise as shown in Figure 8 17. The groove wall of the inclined groove 18 can be pressed against the ejector rod 15, so that the ejector rod 15 drives the clamping block 3 to move toward the middle of the through groove 2, so that the clamping block 3 clamps the bottle neck of the volumetric flask, and the swivel 17 It is rotatably connected inside the hollow slot 16, and the lower side wall of the hollow slot 16 is engaged with the swivel frame 4. As shown in FIG. The inner side wall of 4 is provided with an internal thread, which meshes with the circular groove wall on the lower groove wall of the empty groove 16. The upper end of the rod 19 extends into the through hole 31 opened on the swivel ring 17. At this time, the swivel frame 4 will drive the swivel ring 17 to rotate through the fixing rod 19 when the swivel frame 4 rotates (when the swivel frame 4 rises, the fixing rod 19 will only It rises in the interior of the through hole 31 and does not contact and drives the swivel 17 to rise).

Since the swivel frame 4 is engaged with the circular groove, after the swivel frame 4 is rotated to any angle, its angle will remain unchanged under the action of no external force, so that the swivel ring 17 will not rotate at will after the swivel frame 4 is rotated to any angle. Therefore, the chute 18 can stably drive the clamping block 3 to move inwardly to clamp the bottle body of the volumetric flask.

In order to better remove the device from the volumetric flask after use, a spring 21 is provided. Specifically, a circular plate 20 is fixedly sleeved on the side wall of one end of the top rod 15 located inside the hollow groove 16, And a spring 21 is connected between the circular plate 20 and the groove wall of the hollow groove 16. One end of the spring 21 is fixedly connected to the circular plate 20, and the other end is fixedly connected to the groove wall of the hollow groove 16. The spring 21 can give the ejector rod 15 a certain amount. When the chute 18 no longer squeezes the ejector rod 15, the ejector rod 15 will drive the clamping block 3 away from the center of the through groove 2 under the elastic force of the spring 21. movement, so that the device can be easily removed from the volumetric flask after use.

In order to make the bottle stopper 35 easier to be pulled out, a heating block 22 is provided to heat the neck of the bottle. 22 The outer side wall is fixedly connected with a conductive rod 23 The external power supply is electrically connected, and the heating block 22 can heat the bottle neck of the volumetric flask, causing slight thermal expansion and contraction on the bottle neck, so that the bottle stopper 35 can be easily removed. Pull out, each heating block 22 is connected with two conductive rods 23, the two conductive rods 23 extend through the groove wall of the through groove 2 to the inside of the casing 1 with a dark groove 32, and are respectively connected with the dark groove 32. The two inner conductive rings 29 are movably connected, and the two conductive rings 29 are respectively connected with the positive and negative electrodes of the external power supply. When the conductive rod 23 moves with the heating block 22 (clamp block 3), it will form a brush with the conductive ring 29. form, so that the heating block 22 can keep the smoothness of the circuit, the heating block 22 is the prior art, and its structure and working principle are not the technical characteristics of the present invention, so do not repeat them, such as the electric heater that has been widely used now,

Specifically, the heating block 22 is made of metal, and a heating wire is provided inside to generate heat after being energized. The heating block 22 is wrapped with soft rubber. The heating block 22 of metal texture has a certain strength so that the outer rubber can be tightly It fits the bottle neck of the volumetric bottle, and the metal heating block 22 can be quickly transmitted to the bottle neck of the volumetric bottle through the rubber film covered by the metal heating block 22, which has a dual function.

Specifically, the upper end of the screw 13 extends to the inside of the ring groove 24 opened on the outer side wall of the upper end of the casing 1 and is fixedly connected with a gear 25, and the gear 25 is rotatably connected with the ring groove 24. A ring gear 26 is meshed and connected, The inner side wall of the toothed ring 26 is provided with a plurality of teeth, and the two gears 25 can be rotated synchronously by rotating the toothed ring 26, so as to make the two screws 13 rotate. The outer side wall of the toothed ring 26 is symmetrically connected with two rotating rods 14. The gear ring 26 can be rotated by rotating the rotating rod 14 .

In order to make the first clamp plate 7 and the second clamp plate 8 rise more stably, a protrusion 27 is provided on the slider 12. A plurality of protrusions 27 are fixedly connected, and a plurality of card slots 28 corresponding to the protrusions 27 are opened on the lower side walls of the first plywood 7 and the second plywood 8 and located on both sides of the chute 11. When the screw 13 is rotated, the slider 12 will drive the first clamp plate 7 and the second clamp plate 8 to rise. At this time, the lower end side wall of the slider 12 will exert a certain pressure on the first clamp plate 7 and the second clamp plate 8, so that the The protrusions 27 are tightly snapped together with the locking grooves 28, so that the first clamping plate 7 and the second clamping plate 8 will not slide freely when rising.

The three types of bottle stoppers 35 in FIG. 10 are the bottle stoppers 35 of most volumetric flasks on the market today.

Working principle: Sleeve the shell 1 on the bottle neck of the volumetric flask when in use, and determine the position of the first clamping frame 9 and the second clamping frame 10 by observing the groove 5, so that the first clamping frame 9 and the second clamping frame 10 are located at Below the bottle stopper handle 34, then while holding the casing 1, turn the rotating frame 4 clockwise to make the clamping block 3 clamp the bottle neck of the volumetric flask (at this time, energize the heating block 22 inside the clamping block 3 to make the bottle neck energized. heating), then simultaneously push the first clamping plate 7 and the second clamping plate 8 to the middle of the through groove 2, so that the first clamping frame 9 and the second clamping frame 10 clamp the plug handle 34, and then the rotating rod can be rotated clockwise 14. The gear ring 26 drives the gear 25 to rotate clockwise, so that the screw 13 also rotates clockwise, and then the first clamping plate 7 and the second clamping plate 8 respectively drive the first clamping frame 9 and the second clamping frame 10 to rise, through the teeth The transmission between the teeth and the meshing of the screw 13 increase the upward pulling force and realize the plug removal; after the plug removal is completed, the rotating frame 4 is rotated counterclockwise so that the clamping block 3 no longer clamps the bottle neck of the volumetric flask, and the bottle can be removed at this time. The device is removed from the volumetric flask.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a chemistry experiment uses supplementary cork pulling device of glass system volumetric flask which characterized in that: comprises a shell (1) and a through groove (2) in the middle of the shell (1), wherein a plurality of clamping blocks (3) used for clamping volumetric flasks are arranged in the through groove (2),

the clamping blocks (3) are driven to move by the rotating frame (4) at the same time,

run through on the cell wall of groove (2) respectively the symmetry open have two ascending groove (6), the inside difference sliding connection of two ascending groove (6) has first splint (7) and second splint (8), be fixedly connected with respectively on the interior terminal surface of first splint (7) and second splint (8) and be used for the first clamp frame (9) and the second clamp frame (10) of centre gripping bottle plug, first splint (7) and second splint (8) all have slider (12) through spout (11) sliding connection that it opened on it, slider (12) are connected with screw rod (13) meshing, screw rod (13) are driven in order to drive first clamp frame (9) and second clamp frame (10) centre gripping bottle plug that upwards breaks away from by bull stick (14) that are equipped with on shell (1) upper end lateral wall, fixedly connected with ejector pin (15) on the lateral wall of clamp block (3), the outer end of ejector pin (15) runs through the cell wall of groove (2) and extends to the inside bottle plug that opens and have of shell (1), and the ejector pin (15) The rotary frame is characterized in that the hollow groove (16) is internally and movably connected with a chute (18) which is arranged on the inner side surface of the rotary ring (17), the rotary ring (17) is rotatably connected inside the hollow groove (16), the lower side groove wall of the hollow groove (16) is meshed and connected with the rotary frame (4), and the rotary frame (4) is in sliding connection with the rotary ring (17) through a fixing rod (19) fixedly connected with the upper end of the rotary frame (4).

2. The auxiliary cork-pulling device for glass volumetric flasks for chemical laboratories according to claim 1, characterized in that: the side wall of one end, positioned inside the empty groove (16), of the ejector rod (15) is fixedly sleeved with a circular plate (20), and a spring (21) is connected between the circular plate (20) and the wall of the empty groove (16).

3. The auxiliary cork-pulling device for glass volumetric flasks for chemical laboratories according to claim 1, characterized in that: the heating block (22) for heating the volumetric flask body is arranged in the clamping block (3), and the heating block (22) is electrically connected with an external power supply of the conducting rod (23) through the outer side wall of the heating block.

4. The auxiliary cork-pulling device for glass volumetric flasks for chemical laboratories according to claim 1, characterized in that: the upper end of screw rod (13) extends to inside and fixedly connected with gear (25) of the annular (24) that open on shell (1) upper end lateral wall, and gear (25) and annular (24) internal rotation are connected with ring gear (26) meshing connection, fixed connection bull stick (14) on the lateral wall of ring gear (26).

5. The auxiliary cork-pulling device for glass volumetric flasks for chemical laboratories according to claim 1, characterized in that: the shape of slider (12) is "worker" font, and fixedly connected with a plurality of archs (27) on its lower extreme inside wall, just be located both sides of spout (11) and all opened a plurality of draw-in grooves (28) that correspond each other with arch (27) on the lower lateral wall of first splint (7) and second splint (8).

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