CN209912309U

CN209912309U - Experiment teaching aid for chemical analysis

Info

Publication number: CN209912309U
Application number: CN201822095290.9U
Authority: CN
Inventors: 于秋玲; 赖菁华
Original assignee: Shaanxi Energy Institute
Current assignee: Shaanxi Energy Institute
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2020-01-07
Anticipated expiration: 2028-12-13

Abstract

The utility model relates to an experiment teaching aid for chemical analysis, including the experiment board, the experiment board front and a side all are provided with the spirit level, experiment board bottom four corners is provided with the screw rod, the threaded sleeve is equipped with the adjusting collar under the screw rod, experiment board upper portion both sides are provided with first montant and second montant respectively, first montant upper end inboard is provided with the kicking block, rotatory screw rod is worn to be equipped with by the screw thread on the kicking block, rotatory cover is established on the second bearing to rotatory screw rod lower extreme rotation cover, the second bearing bottom is fixed with the horizontal pole, the movable sleeve is equipped with the removal cover on the horizontal pole, removal cover bottom is fixed with the suction hood through the connecting block, the suction hood passes through the exhaust column and links to each other; the utility model discloses a level of experiment board is adjusted to the swivel mount for experiment reading and sample accuracy are high, improve the experiment degree of accuracy, can furthest carry out suction treatment to the waste gas that the experiment produced, avoid influencing personnel health and environment in the laboratory.

Description

Experiment teaching aid for chemical analysis

Technical Field

The utility model relates to a chemical analysis teaching aid field specifically is a chemical analysis is with experiment teaching aid.

Background

Experiments are indispensable in the study of chemistry, can verify the knowledge point in many books through the experiment, it can deepen student's understanding memory to verify the rear, some experiments are when the operation, there is very high requirement to experiment sample volume and reading, mr demonstrates in the classroom, general demonstration all is operated on test bench or podium, but test bench and podium levelness are relatively poor, reading is inaccurate when often leading to the experiment, influence the accuracy of experiment, can produce poisonous and harmful gas such as acid-base in many experimentation in addition, cause the influence to health and environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an experiment teaching aid for chemical analysis is in order to solve above-mentioned deficiency.

In order to achieve the above object, the utility model provides a following technical scheme: an experiment teaching aid for chemical analysis comprises an experiment board, wherein level gauges are arranged on the front side and one side surface of the experiment board, screws are arranged at four corners of the bottom of the experiment board, an adjusting sleeve is sleeved on the lower end of each screw, an internal thread matched with an external thread of each screw is arranged in each adjusting sleeve, the lower end of each adjusting sleeve is rotatably sleeved on a first bearing, the first bearing is fixed on a bottom box, a first vertical rod and a second vertical rod are respectively arranged on two sides of the upper portion of the experiment board, a top block is arranged on the inner side of the upper end of each first vertical rod, a rotating screw is arranged on the top block in a penetrating manner, a handle is arranged on the upper end of each rotating screw, the lower end of each rotating screw is rotatably sleeved on a second bearing, a cross rod is fixed at the bottom of the second bearing, a sliding block is arranged at the other end of each cross rod, the exhaust hood is connected with an air inlet of the exhaust fan through an exhaust pipe, and an air outlet of the exhaust fan is connected with the air purification device in the bottom box.

Furthermore, a fastening bolt penetrates through the movable sleeve through threads, and the end part of the inner side of the fastening bolt abuts against the cross rod to fix the movable sleeve on the cross rod.

Furthermore, the exhaust pipe be the hose, be provided with solid fixed ring on the first montant, be provided with the elastic ring in the solid fixed ring, the internal diameter of elastic ring slightly is less than the exhaust pipe external diameter, the exhaust pipe passes from the elastic ring.

Further, the under casing openly be provided with the chamber door, air purification device includes the three purification section of thick bamboo that sets gradually from a left side to the right side, and is three the purification section of thick bamboo in set gradually alkaline washing gas-liquid, acid washing gas-liquid and water, between the purification section of thick bamboo of left end and the air exhauster air outlet, all link to each other through the connecting pipe between two adjacent purification sections, the connecting pipe is 7 fonts, the connecting pipe lower extreme is located and is provided with out the gas head below the liquid level in the purification section of thick bamboo, it is hollow hemisphere to go out the gas head, it is provided with a plurality of ventholes to go out the gas head surface, the purification section of thick.

Compared with the prior art, the utility model beneficial effect who has is: the utility model discloses a level of experiment board is adjusted to the swivel mount for experiment reading and sample accuracy are high, improve the experiment degree of accuracy, can furthest carry out suction treatment to the waste gas that the experiment produced, avoid influencing personnel health and environment in the laboratory.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an air purification device;

fig. 3 is a schematic structural view of the fixing ring.

The reference numbers in the figures are: 1-an experimental plate, 2-a level meter, 3-a screw rod, 4-an adjusting sleeve, 5-a first bearing, 6-a bottom box, 7-a first vertical rod, 8-a second vertical rod, 81-a chute, 9-a top block, 10-a rotating screw rod, 11-a handle, 12-a second bearing, 13-a cross rod, 14-a sliding block, 15-a moving sleeve, 16-a fastening bolt, 17-a connecting block, 18-an exhaust hood, 19-an exhaust pipe, 20-an exhaust fan, 21-a fixing ring, 22-an elastic ring, 23-a box door, 24-a purifying cylinder, 25-a connecting pipe, 26-an air outlet head and 27-an exhaust pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to the attached figures 1-3, an experiment teaching aid for chemical analysis comprises an experiment board 1, levels 2 are arranged on the front side and one side surface of the experiment board 1, bubble levels are preferably selected by the levels 2, the experiment board has the characteristics of convenient use and low cost, screw rods 3 are arranged at four corners of the bottom of the experiment board 1, an adjusting sleeve 4 is sleeved on a lower end thread of each screw rod 3, in order to facilitate manual rotation of the adjusting sleeve 4, anti-slip threads can be arranged on the surface of the adjusting sleeve 4, an internal thread matched with an external thread of each screw rod 3 is arranged in each adjusting sleeve 4, the lower end of each adjusting sleeve 4 is rotatably sleeved on a first bearing 5, each first bearing 5 is fixed on a bottom box 6, a first vertical rod 7 and a second vertical rod 8 are respectively arranged on two sides of the upper portion of the experiment board 1, a top block 9 is arranged on the inner side of the upper end of each first, the lower end of the rotary screw 10 is rotatably sleeved on the second bearing 12, the bottom of the second bearing 12 is fixedly provided with a cross rod 13, the other end of the cross rod 13 is provided with a sliding block 14, the sliding block 14 is slidably arranged in a sliding groove 81 on the second vertical rod 8, the sliding groove 81 is arranged on the inner side surface of the second vertical rod 8, the cross rod 13 is movably sleeved with a moving sleeve 15, a fastening bolt 16 is threaded on the moving sleeve 15, the inner end part of the fastening bolt 16 abuts against the cross rod 13 to fix the moving sleeve 15 on the cross rod 13, the bottom of the moving sleeve 15 is fixedly provided with an exhaust hood 18 through a connecting block 17, the exhaust hood 18 is connected with an air inlet of an exhaust fan 20 through an exhaust pipe 19, the exhaust pipe 19 is a hose, a fixing ring 21 is arranged on the first vertical rod 7, an elastic ring 22 is arranged in the fixing ring 21, the inner diameter of the elastic ring 22 is slightly smaller than, the air outlet of the exhaust fan 20 is connected with the air purification device in the bottom box 6 to prevent the exhaust pipe 19 from automatically falling to the surface of the experimental plate 1 to influence the experimental operation, bottom case 6 openly be provided with chamber door 23, air purification device includes from a left side to the right side three purification section of thick bamboo 24 that sets gradually, it is three purification section of thick bamboo 24 in set gradually alkaline wash gas-liquid, acid wash gas-liquid and water, purification section of thick bamboo 24 is last to be set up and to be annotated mouth and leakage fluid dram, all set up the valve in annotating liquid mouth and the leakage fluid dram, be convenient for purify the change of 24 interior liquid of section of thick bamboo, between the purification section of thick bamboo 24 and the air exhauster 20 air outlet of left end, all link to each other through connecting pipe 25 between two adjacent purification section of thick bamboo 24, connecting pipe 25 is 7 fonts, the connecting pipe 25 lower extreme is located purification section of thick bamboo 24 below the liquid level and is provided with gas outlet 26, gas outlet 26 is hollow hemisphere, gas outlet 26 surface is provided with a plurality of.

When the utility model is used, the experimental teaching aid is placed on an experimental bench, the experimental operation is carried out on an experimental plate 1, whether the experimental plate is horizontal or not is seen by observing a level meter 2, when the experimental plate is not in the horizontal state, a corresponding adjusting sleeve 4 is held by a hand to rotate, a screw rod 3 in the adjusting sleeve 4 is lifted to drive the corresponding experimental plate 1 to ascend and descend until the level meter 2 displays that the experimental plate 1 is in the horizontal state, the experimental plate 1 is adjusted to the horizontal state, the reading and the sampling accuracy of experimental materials in the experimental process are ensured, the experimental accuracy is improved, when toxic and harmful gases are possibly generated in the experimental process, a handle 11 is rotated to drive a rotary screw rod 10 to rotate, due to the threaded connection relationship between the rotary screw rod 10 and a top block 9, a transverse rod 13 is driven to ascend and descend along a chute 81 when the rotary screw rod 10 is rotated, an exhaust hood is adjusted to a proper height above the experimental plate 1, simultaneously can aspirate the position height of produced waste gas as far as possible, remove along horizontal pole 13 through removing cover 15, move draught hood 18 directly over to the experimental area, open air exhauster 20 before the experiment begins, the waste gas that produces in the experimentation passes through draught hood 18, exhaust column 19 and air exhauster 20 and gets into air purification device in, carries out purification treatment to gas, and the clean gaseous discharge after handling avoids producing the influence to the laboratory personnel health and environment.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an experiment teaching aid for chemical analysis which characterized in that: the experimental plate comprises an experimental plate, wherein level gauges are arranged on the front side and one side surface of the experimental plate, screw rods are arranged at four corners of the bottom of the experimental plate, an adjusting sleeve is sleeved at the lower end of each screw rod, an internal thread matched with an external thread of each screw rod is arranged in each adjusting sleeve, the lower end of each adjusting sleeve is rotatably sleeved on a first bearing, the first bearing is fixed on a bottom box, a first vertical rod and a second vertical rod are respectively arranged on two sides of the upper part of the experimental plate, a top block is arranged on the inner side of the upper end of each first vertical rod, a rotating screw rod is arranged on the upper thread of each top block in a penetrating mode, a handle is arranged at the upper end of each rotating screw rod, the lower end of each rotating screw rod is rotatably sleeved on a second bearing, a cross rod is fixed at the bottom of the second bearing, the exhaust hood is connected with an air inlet of the exhaust fan through an exhaust pipe, and an air outlet of the exhaust fan is connected with the air purification device in the bottom box;

a fastening bolt penetrates through the movable sleeve through threads, and the end part of the inner side of the fastening bolt abuts against the cross rod to fix the movable sleeve on the cross rod;

the exhaust pipe is a hose, a fixing ring is arranged on the first vertical rod, an elastic ring is arranged in the fixing ring, the inner diameter of the elastic ring is slightly smaller than the outer diameter of the exhaust pipe, and the exhaust pipe penetrates through the elastic ring;

the under casing openly be provided with the chamber door, air purification device includes the three purifying barrel that sets gradually from a left side to the right side, and is three the purifying barrel in set gradually alkaline wash gas-liquid, acid wash gas-liquid and water, between the purifying barrel of left end and the air exhauster air outlet, all link to each other through the connecting pipe between two adjacent purifying barrels, the connecting pipe is 7 fonts, the connecting pipe lower extreme is located and is provided with out the gas head below the liquid level in the purifying barrel, it is hollow hemisphere to go out the gas head, it is provided with a plurality of ventholes to go out the gas head surface, the purifying barrel upper end of right-hand member is connected with the blast.