A nitrogen blowing device capable of quickly adjusting height

Abstract

The utility model discloses a nitrogen blowing device capable of quickly adjusting the height. The utility model relates to the technical field of the structure of the nitrogen blowing device. A rotating shaft is rotatably mounted on the bottom surface of the workbench. The outer cylindrical surfaces of the left and right ends of the rotating shaft are respectively provided with positive external threads and reverse external threads. Nuts A and B are respectively threadedly connected to the positive external threads and reverse external threads. Vertical plates penetrating upward through the workbench are welded on the top surfaces of nuts A and B. Inclined plates tilted upward are welded on the outer end surfaces of the two vertical plates. The strip grooves are slidably matched with the vertical plates. Guide columns located on the left and right sides of the U-shaped part are also fixed on the workbench. Fixed plates are fixed on the tops of the two guide columns. A lifting plate is sleeved between the two guide columns. A plurality of metal pipes are fixed in the lifting plate. The beneficial effects of the utility model are: reducing the working intensity of the operator and greatly improving the efficiency of the height adjustment of the metal pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen blowing device structure, in particular to a nitrogen blowing device capable of quickly adjusting the height. Background Art

[0002] The method for detecting the content of additives in granular food in a certain laboratory is: the operator collects a certain amount of granular food, and then puts the granular food into a container, then injects a certain amount of solvent into the container, stirs the solvent and the container, and the additives in the food are extracted into the solvent. After stirring for a period of time, an extract can be prepared in the container; the operator filters the extract in the container, and then injects the filtered extract into a test tube, and then installs the test tube to the nitrogen blowing station of the nitrogen blowing device, and blows the solvent in the extract dry with the nitrogen blown out of the nitrogen blowing device. After drying, only the additives are contained in the test tube, so that the content of the additives in the granular food can be detected separately.

[0003] Among them, the structure of the nitrogen blowing device is as follows Figure 1 As shown, it includes a workbench 1, a threaded rod 2 fixed on the workbench 1, a lifting plate 3 is sleeved between the two threaded rods 2, nuts 4 are threadedly connected on the threaded sections of the two threaded rods 2, the lifting plate 3 is pressed and fixed between the two nuts 4, a plurality of metal tubes 5 are fixedly arranged in the lifting plate 3 along its length direction, the upper end of each metal tube 5 is connected to the gas outlet of the nitrogen bottle, and the lower end of each metal tube 5 passes through the lifting plate 3 downward; a U-shaped piece 6 fixed on the surface of the workbench 1 is arranged directly below the lifting plate 3, a plurality of partitions 7 are fixed in the U-shaped piece 6, through holes 8 for accommodating test tubes are opened between the partitions 7, and each through hole 8 is respectively located directly below each metal tube 5.

[0004] The method by which the operator uses the nitrogen blowing device to blow dry the solvent in the extract is:

[0005] S1. The operator takes out a plurality of test tubes 9 and injects a certain amount of extract into each test tube 9;

[0006] S2. The operator inserts a plurality of test tubes 9 into the through holes 8 from top to bottom, and supports the bottom surface of the test tubes 9 on the bottom surface of the U-shaped member 6, thereby realizing the tooling of each test tube 9, as shown in FIG. Figure 2 As shown, at this time, each test tube 9 is directly below each metal tube 5;

[0007] S3, the height adjustment of the metal tube 5, the specific operation steps are:

[0008] S31, the operator loosens the nut 4 located below the lifting plate 3 along the length direction of the threaded rod 2. During the loosening process, the lifting plate 3 also moves linearly downward, and at the same time, the lifting plate 3 drives the metal tubes 5 therein to move downward synchronously. When the lower end of the metal tube 5 approaches the top end of the test tube 9, the operator stops loosening the nut 4 located below the lifting plate 3;

[0009] S32, the operator tightens the nut 4 located above the lifting plate 3 downward along the length direction of the threaded rod 2 until the upper nut 4 presses against the top surface of the lifting plate 3, thereby fixing the lifting plate 3 and finally adjusting the height of the metal tube 5. Figure 3 As shown;

[0010] S4, the operator opens the nitrogen bottle, and the nitrogen produced in the nitrogen bottle is blown into the test tube 9 through the upper end of the metal tube 5, the metal tube 5, and finally from the lower end of the metal tube 5. The nitrogen dries the solvent in the extract. After drying, the test tube 9 only contains the additives, so that the content of the additives contained in the granular food can be detected separately;

[0011] S5. Removal of the test tube 9: the operator loosens the nuts 4 upwards to move the lifting plate 3 upwards, thereby moving the metal tube 5 in the lifting plate 3 upwards. When the metal tube 5 is away from the test tube 9, the operator lifts the test tube 9 upwards from the through hole 8, thereby removing the test tube 9.

[0012] However, although this nitrogen blowing device can be used, it still has the following technical defects:

[0013] I. In step S3, the operator needs to first loosen the two nuts 4 located below the lifting plate 3, and then manually tighten the two nuts 4 located above the lifting plate 3 to fix the lifting plate 3, and then adjust the height of the metal tube 5; and the entire process of adjusting the height of the metal tube 5 is completed manually, which not only increases the workload of the operator, but also takes a long time to adjust the height, reduces the adjustment efficiency of the height of the metal tube 5, and thus reduces the efficiency of subsequent nitrogen blowing.

[0014] II. In step S5, the operator still needs to manually tighten the nut 4 to raise the height of the metal tube 5, which undoubtedly further reduces the adjustment efficiency of the height of the metal tube 5.

[0015] Therefore, there is an urgent need for a nitrogen blowing device that can reduce the workload of operators and greatly improve the efficiency of metal tube height adjustment. Utility Model Content

[0016] The utility model aims to overcome the shortcomings of the prior art and provide a nitrogen blowing device which can quickly adjust the height and can reduce the working intensity of operators and greatly improve the efficiency of metal pipe height adjustment.

[0017] The purpose of the utility model is achieved through the following technical solutions: a nitrogen blowing device with rapid height adjustment, comprising a U-shaped piece fixed on a workbench, a plurality of partitions are welded in sequence from bottom to top in the U-shaped piece, through holes for accommodating test tubes are provided between the partitions, a rotating shaft is rotatably mounted on the bottom surface of the workbench, a positive external thread and a reverse external thread are respectively provided on the outer cylindrical surfaces of the left and right ends of the rotating shaft, a nut A and a nut B are respectively threadedly connected on the positive external thread and the reverse external thread, a vertical plate penetrating upward through the workbench is welded on the top surfaces of the nut A and the nut B, an inclined plate inclined upward is welded on the outer end surfaces of the two vertical plates, two strip grooves corresponding to the vertical plates are provided on the workbench, and the strip grooves are slidably matched with the vertical plates;

[0018] The workbench is also fixed with guide columns located on the left and right sides of the U-shaped part, and a fixed plate is fixed on the top of the two guide columns. A lifting plate is sleeved between the two guide columns, and a plurality of metal tubes are fixed in the lifting plate. Each metal tube is located directly above each through hole. A spring is sleeved on the guide column, and the upper and lower ends of the spring are respectively fixed on the lifting plate and the fixed plate. Connecting columns are fixed on the bottom surfaces of the left and right ends of the lifting plate, and rollers are rotatably installed on the bottom ends of the two connecting columns. The two rollers are respectively supported on the inclined surfaces of the two inclined plates.

[0019] A plurality of supporting legs supported on the ground are fixedly arranged on the bottom surface of the workbench.

[0020] The right end of the rotating shaft is fixedly connected with a hand wheel.

[0021] The fixing plate is fixed on the top surface of the guide column via locking screws.

[0022] The upper end of each metal tube is connected to the gas outlet of the nitrogen bottle, and the lower end of each metal tube passes through the lifting plate downward.

[0023] The diameter of the through hole is equal to the outer diameter of the test tube.

[0024] The utility model has the following advantages: reducing the working intensity of operators and greatly improving the efficiency of metal pipe height adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a nitrogen blowing device in the prior art;

[0026] Figure 2 Schematic diagram of each test tube tooling for nitrogen blowing device;

[0027] Figure 3 Schematic diagram of realizing height adjustment of metal tube for nitrogen blowing device;

[0028] Figure 4 It is a schematic diagram of the structure of the utility model;

[0029] Figure 5 It is a schematic diagram of the connection between the U-shaped piece and the partition;

[0030] Figure 6 for Figure 5 A top view of

[0031] Figure 7 for Figure 4 AA section view;

[0032] Figure 8 It is a connection diagram of the inclined plate, the vertical plate and the nut A;

[0033] Fig. 9 It is a schematic diagram of each test tube tooling implemented by the utility model;

[0034] Fig.10 This is a schematic diagram of the utility model for adjusting the height of the metal tube;

[0035] In the figure:

[0036] 1- working table, 2- threaded rod, 3- lifting plate, 4- nut, 5- metal tube, 6- U-shaped piece, 7- partition, 8- through hole, 9- test tube;

[0037] 10-shaft, 11-forward external thread, 12-reverse external thread, 13-nut A, 14-nut B, 15-vertical plate, 16-inclined plate, 17-strip groove, 18-guide column, 19-fixed plate, 20-spring, 21-connecting column, 22-roller, 23-handwheel. DETAILED DESCRIPTION

[0038] The utility model is further described below in conjunction with the accompanying drawings, and the protection scope of the utility model is not limited to the following:

[0039] like Figure 4~Figure 8As shown, a nitrogen blowing device with rapid height adjustment comprises a U-shaped member 6 fixedly mounted on a workbench 1, a plurality of supporting legs supported on the ground are fixedly mounted on the bottom surface of the workbench 1, a plurality of partitions 7 are welded in sequence from bottom to top in the U-shaped member 6, a through hole 8 for accommodating a test tube is opened between the partitions 7, and the diameter of the through hole 8 is equal to the outer diameter of the test tube 9, a rotating shaft 10 is rotatably mounted on the bottom surface of the workbench 1, and a positive external thread 11 and a negative external thread 12 are respectively opened on the outer cylindrical surfaces of the left and right ends of the rotating shaft 10 The external thread 12, the forward external thread 11 and the reverse external thread 12 are respectively threadedly connected with a nut A13 and a nut B14, and the top surfaces of the nuts A13 and B14 are welded with vertical plates 15 that penetrate upward through the workbench 1, and the outer end surfaces of the two vertical plates 15 are welded with inclined plates 16 that are inclined upward. The workbench 1 is provided with two strip grooves 17 corresponding to the vertical plates 15, and the strip grooves 17 are slidably matched with the vertical plates 15; the right end of the rotating shaft 10 is fixedly connected with a handwheel 23.

[0040] The workbench 1 is also fixed with guide columns 18 located on the left and right sides of the U-shaped member 6, and the tops of the two guide columns 18 are fixed with fixed plates 19, and the fixed plates 19 are fixed to the top surfaces of the guide columns 18 by locking screws. A lifting plate 3 is sleeved between the two guide columns 18, and a plurality of metal tubes 5 are fixed in the lifting plate 3, and each metal tube 5 is located directly above each through hole 8. A spring 20 is sleeved on the guide column 18, and the upper and lower ends of the spring 20 are respectively fixed on the lifting plate 3 and the fixed plate 19, and connecting columns 21 are fixed on the bottom surfaces of the left and right ends of the lifting plate 3, and rollers 22 are rotatably installed at the bottom ends of the two connecting columns 21, and the two rollers 22 are respectively supported on the inclined surfaces of the two inclined plates 16.

[0041] The upper end of each metal tube 5 is connected to the gas outlet of the nitrogen bottle, and the lower end of each metal tube 5 passes through the lifting plate 3 downward.

[0042] The working process of the utility model is as follows:

[0043] S1. The operator takes out a plurality of test tubes 9 and injects a certain amount of extract into each test tube 9;

[0044] S2. The operator inserts a plurality of test tubes 9 into the through holes 8 from top to bottom, and supports the bottom surface of the test tubes 9 on the bottom surface of the U-shaped member 6, thereby realizing the tooling of each test tube 9, as shown in FIG. Fig. 9 As shown, at this time, each test tube 9 is directly below each metal tube 5;

[0045] S3. Adjustment of the height of the metal tube 5: The operator rotates the hand wheel 23 by hand, and the hand wheel 23 drives the rotating shaft 10 to rotate. At this time, the nut A13 on the rotating shaft 10 moves to the left along the positive external thread 11, and the nut A13 drives the vertical plate 15 to move to the left, and the vertical plate 15 drives the inclined plate 16 connected thereto to move to the left. At the same time, the nut B14 on the rotating shaft 10 moves to the right along the reverse external thread 12, and the nut B14 drives the vertical plate 15 to move to the right, and the vertical plate 15 drives the inclined plate 16 connected thereto to move to the right;

[0046] When the two inclined plates 16 are moving outward, the roller 22 moves downward along the inclined surface of the inclined plate 16. At the same time, the lifting plate 3 moves downward along the guide column 18, and the guide column 18 drives the metal tubes 5 thereon to move downward synchronously. When the operator observes that the lower end of the metal tube 5 is close to the top end of the test tube 9, the operator stops rotating the hand wheel 23, thereby realizing the height adjustment of the metal tube 5. Fig.10 As shown;

[0047] S4, the operator opens the nitrogen bottle, and the nitrogen produced in the nitrogen bottle is blown into the test tube 9 through the upper end of the metal tube 5, the metal tube 5, and finally from the lower end of the metal tube 5. The nitrogen dries the solvent in the extract. After drying, the test tube 9 only contains the additives, so that the content of the additives contained in the granular food can be detected separately;

[0048] S5. Removal of the test tube 9: the operator rotates the hand wheel 23 in the opposite direction, and the hand wheel 23 drives the rotating shaft 10 to rotate in the opposite direction. The two vertical plates 15 on the rotating shaft 10 make relative motion, thereby making the two inclined plates 16 make relative motion. The roller 22 moves upward along the inclined surface of the inclined plate 16. At the same time, the lifting plate 3 moves upward along the guide column 18, and the lifting plate 3 drives the metal tubes 5 therein to move upward synchronously. When the operator observes that the metal tube 5 is moving away from the test tube 9, the operator stops rotating the hand wheel 23; finally, the operator takes the test tube 9 upward from the through hole 8.

[0049] Among them, it can be seen from step S3 that the nitrogen blowing device only needs to rotate the hand wheel 23 to quickly adjust the height of the lifting plate 3, and then adjust the height of the metal tube 5. Figure 1~Figure 3 The nitrogen blowing device shown does not require manual adjustment, which not only reduces the workload of operators, but also shortens the adjustment time of the height of the metal tube 5, thereby improving the adjustment efficiency of the height of the metal tube 5 and reducing the subsequent nitrogen blowing efficiency.

[0050] In addition, it can be seen from step S5 that the nitrogen blowing device can quickly separate the metal tube 5 from the test tube 9 by simply rotating the hand wheel 23 in the opposite direction, so that the test tube 9 can be quickly removed. There is no need to manually adjust the height of the metal tube 5 by tightening the nut, which further improves the efficiency of adjusting the height of the metal tube 5.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A nitrogen blowing device with rapidly adjustable height, characterized in that: It comprises a U-shaped member (6) fixed on a workbench (1), a plurality of partitions (7) are welded in sequence from bottom to top in the U-shaped member (6), through holes (8) for accommodating test tubes are provided between the partitions (7), a rotating shaft (10) is rotatably mounted on the bottom surface of the workbench (1), a positive external thread (11) and a reverse external thread (12) are respectively provided on the outer cylindrical surfaces of the left and right ends of the rotating shaft (10), a nut A (13) and a nut B (14) are respectively threadedly connected on the positive external thread (11) and the reverse external thread (12), a vertical plate (15) penetrating upward through the workbench (1) is welded on the top surfaces of the nut A (13) and the nut B (14), an inclined plate (16) inclined upward is welded on the outer end surfaces of the two vertical plates (15), and two strip grooves (17) corresponding to the vertical plates (15) are provided on the workbench (1), and the strip grooves (17) are slidably matched with the vertical plates (15); The workbench (1) is also fixedly provided with guide columns (18) located on the left and right sides of the U-shaped member (6), and the tops of the two guide columns (18) are fixedly provided with fixed plates (19). A lifting plate (3) is sleeved between the two guide columns (18), and a plurality of metal tubes (5) are fixedly provided in the lifting plate (3), and each metal tube (5) is respectively located directly above each through hole (8). A spring (20) is sleeved on the guide column (18), and the upper and lower ends of the spring (20) are respectively fixedly provided on the lifting plate (3) and the fixed plate (19). Connecting columns (21) are fixedly provided on the bottom surfaces of the left and right ends of the lifting plate (3), and rollers (22) are rotatably mounted on the bottom ends of the two connecting columns (21), and the two rollers (22) are respectively supported on the inclined surfaces of the two inclined plates (16).

2. A nitrogen blowing device capable of rapidly adjusting height according to claim 1, characterized in that: A plurality of supporting legs supported on the ground are fixedly arranged on the bottom surface of the workbench (1).

3. A nitrogen blowing device capable of rapidly adjusting height according to claim 1, characterized in that: A hand wheel (23) is fixedly connected to the right end of the rotating shaft (10).

4. A nitrogen blowing device capable of rapidly adjusting height according to claim 1, characterized in that: The fixing plate (19) is fixed on the top surface of the guide column (18) via locking screws.

5. The nitrogen blowing device with rapid height adjustment according to claim 1, characterized in that: The upper end of each metal tube (5) is connected to the gas outlet of the nitrogen bottle, and the lower end of each metal tube (5) passes through the lifting plate (3) downwards.

6. The nitrogen blowing device with rapid height adjustment according to claim 1, characterized in that: The diameter of the through hole (8) is equal to the outer diameter of the test tube (9).

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