Nitrogen blowing instrument capable of cleaning nitrogen blowing needle

Abstract

The utility model discloses a nitrogen blowing instrument capable of cleaning a nitrogen blowing needle, and relates to the technical field of nitrogen blowing instruments, the nitrogen blowing instrument comprises a heating main machine, a support frame and a rotating nut, the top of the heating main machine is provided with a test tube rack through a groove, the top of the test tube rack is provided with the nitrogen needle, the top of the nitrogen needle is provided with a connecting frame, and the connecting frame is provided with a rotating nut. The top of the connecting frame is connected with an air supply hose, and the supporting frame is arranged on one side of the connecting frame. When the nitrogen blowing instrument capable of cleaning the nitrogen blowing needle is used, under the cooperation of a driving motor and a lead screw, a threaded sleeve drives a connecting frame to move upwards, then a rotating motor is started, the rotating motor drives a supporting frame to rotate through a driving shaft, and the connecting frame and the nitrogen needle are rotated to the top of an ultrasonic cleaning tank; and then the connecting frame and the nitrogen needle are controlled by the driving motor to move into the ultrasonic cleaning tank, and at the moment, the nitrogen needle can be cleaned by the ultrasonic cleaning tank, so that the nitrogen needle is convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen blowing instruments, in particular to a nitrogen blowing instrument capable of cleaning a nitrogen blowing needle. Background Art

[0002] A nitrogen blower, also known as a nitrogen blow concentration device, is a detection device that blows nitrogen onto the surface of a heated sample to concentrate the sample. It is widely used in the field of agricultural products and food analysis and is a commonly used pre-treatment equipment in laboratories.

[0003] Before using the existing nitrogen blowdown instrument, the nitrogen needle must be inserted into the test tube containing the sample. During nitrogen blowdown, the surface of the nitrogen blowdown needle is easily attached with splashed samples. If the nitrogen blowdown needle is not cleaned in time, cross contamination is easily caused. Therefore, the nitrogen blowdown needle must be thoroughly cleaned after each group of samples are nitrogen blown. The nitrogen blowdown needles of the currently commonly used nitrogen blowdown instruments must be removed one by one for cleaning, which is complicated and time-consuming to disassemble. Utility Model Content

[0004] The utility model aims to provide a nitrogen blowing instrument capable of cleaning a nitrogen blowing needle, so as to solve the problem in the above background technology that the nitrogen blowing instrument currently used is not convenient for quickly cleaning the surface of the nitrogen blowing needle.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nitrogen blowing instrument with a cleanable nitrogen blowing needle, comprising: a heating main unit, a support frame and a rotating nut, a test tube rack is installed on the top of the heating main unit through a groove, a nitrogen needle is arranged on the top of the test tube rack, a connecting frame is installed on the top of the nitrogen needle, a gas supply hose is connected to the top of the connecting frame, the supporting frame is arranged on one side of the connecting frame, and the rotating nut is connected between the gas supply hose and the nitrogen needle.

[0006] Preferably, a driving motor is installed on the top of the support frame, and a screw rod penetrating the support frame is connected to the bottom of the driving motor, and a threaded sleeve is sleeved on the outer side of the screw rod.

[0007] Preferably, the bottom of the support frame is connected to a driving shaft penetrating the heating main unit via a coupling, and the bottom of the driving shaft is connected to a rotating motor via a coupling, and the rotating motor is installed inside the heating main unit.

[0008] Preferably, an ultrasonic cleaning tank is installed on one side of the heating main unit, and a control panel is installed on one side of the ultrasonic cleaning tank.

[0009] Preferably, a fixing block is installed on the top of the test tube rack, a top rod is connected through one side of the fixing block, and a connecting block is arranged between two groups of the fixing blocks.

[0010] Preferably, a movable spring is installed inside the connecting block through a groove, and one side of the movable spring is connected to a clamping block that passes through the connecting block.

[0011] Preferably, a sliding block is connected between the bottom of the connecting block and the test tube rack, a clamping block is installed on one side of the connecting block, and a telescopic spring is installed between the sliding block and the slide groove of the test tube rack.

[0012] Compared with the prior art, the beneficial effect of the utility model is that when the nitrogen blowing instrument with a cleanable nitrogen blowing needle is in use, the drive motor and the screw rod can cooperate to make the screw sleeve drive the connecting frame to move upward, and then by starting the rotating motor, the rotating motor will drive the supporting frame to rotate through the driving shaft, and rotate the connecting frame and the nitrogen needle to the top of the ultrasonic cleaning tank, and then the drive motor is used to control the connecting frame and the nitrogen needle to move into the ultrasonic cleaning tank. At this time, the nitrogen needle can be cleaned by relying on the ultrasonic cleaning tank, thereby facilitating the cleaning of the nitrogen needle. This is the use feature of the nitrogen blowing instrument with a cleanable nitrogen blowing needle.

[0013] 1. For the nitrogen blowing instrument with a cleanable nitrogen blowing needle, after the nitrogen blowing of the sample is completed, in order to avoid contamination of the next group of samples, the nitrogen needle needs to be cleaned. At this time, the connecting frame can be controlled to move upward, and then the supporting frame and the connecting frame are driven to rotate by the rotating motor, so that the connecting frame drives the nitrogen needle to rotate to the top of the ultrasonic cleaning tank, and the nitrogen needle is moved to the inside of the ultrasonic cleaning tank. At this time, the nitrogen needle can be cleaned without disassembling the nitrogen needle for separate cleaning.

[0014] 2. The nitrogen blowing instrument with a washable nitrogen blowing needle requires the use of test tubes in order to facilitate nitrogen blowing of samples. The test tubes are placed in the test tube rack and then the nitrogen blowing work can be carried out. When it is necessary to limit and fix test tubes of different sizes, the push rod can be squeezed so that the push rod squeezes the card block into the groove of the connecting block, and then the connecting block will be reset through the slider and the telescopic spring, and drive the clamping block to move. At this time, the two groups of clamping blocks move close to each other to limit the test tube, thereby facilitating the limit and fixation of test tubes of different sizes and meeting the different usage requirements of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main cutaway structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the top view of the cross-section structure of the connection block of the utility model;

[0018] Figure 4 This is a schematic diagram of the top view structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the front cutaway structure of the slider of the utility model.

[0020] In the figure: 1. Heating main unit; 2. Test tube rack; 3. Nitrogen needle; 4. Connecting frame; 5. Air supply hose; 6. Support frame; 7. Driving motor; 8. Screw rod; 9. Screw sleeve; 10. Driving shaft; 11. Rotating motor; 12. Ultrasonic cleaning tank; 13. Control panel; 14. Fixed block; 15. Push rod; 16. Connecting block; 17. Movable spring; 18. Block; 19. Sliding block; 20. Clamping block; 21. Telescopic spring; 22. Rotating nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 and Figure 2 The utility model provides a technical solution: a nitrogen blowing instrument with a cleanable nitrogen blowing needle, comprising: a heating mainframe 1, a support frame 6 and a rotating nut 22, a test tube rack 2 is installed on the top of the heating mainframe 1 through a groove, a nitrogen needle 3 is arranged on the top of the test tube rack 2, a connecting frame 4 is installed on the top of the nitrogen needle 3, a gas supply hose 5 is connected to the top of the connecting frame 4, the support frame 6 is arranged on one side of the connecting frame 4, and the rotating nut 22 is connected between the gas supply hose 5 and the nitrogen needle 3.

[0023] A driving motor 7 is installed on the top of the support frame 6, and a screw rod 8 penetrating the support frame 6 is connected to the bottom of the driving motor 7, and a threaded sleeve 9 is sleeved on the outer side of the screw rod 8. The bottom of the support frame 6 is connected to a driving shaft 10 penetrating the heating main unit 1 through a coupling, and the bottom of the driving shaft 10 is connected to a rotating motor 11 through a coupling. The rotating motor 11 is installed inside the heating main unit 1, and an ultrasonic cleaning tank 12 is installed on one side of the heating main unit 1. A control panel 13 is installed on one side of the ultrasonic cleaning tank 12, and one side of the threaded sleeve 9 is connected to the connecting frame 4.

[0024] In specific implementation, the nitrogen blowing instrument with a cleanable nitrogen blowing needle can drive the screw rod 8 to rotate by driving the motor 7 when it is necessary to clean the sample residue on the surface of the nitrogen needle 3. A screw sleeve 9 is sleeved on the outer side of the screw rod 8, and a connecting frame 4 that penetrates the support frame 6 is connected to one side of the screw sleeve 9. At this time, the connecting frame 4 will move upward through the cooperation of the screw rod 8 and the screw sleeve 9. When the nitrogen needle 3 moves out of the test tube, the rotating motor 11 is started again. The rotating motor 11 will drive the top driving shaft 10 to rotate through the coupling, and the other end of the driving shaft 10 is connected to the support frame 6 through the coupling. At this time, the driving motor 7 will drive the support frame 6 to rotate. By rotating the support frame 6, the entire connecting frame 4 and the nitrogen needle 3 can be rotated to the top of the ultrasonic cleaning tank 12, and then the driving motor 7 is started to make the driving motor 7 drive the screw rod 8 to rotate in the opposite direction, so that the screw rod 8 drives the connecting frame 4 to move downward through the screw sleeve 9, and the nitrogen needle 3 at the bottom of the connecting frame 4 is moved to the ultrasonic cleaning tank 12, and then the ultrasonic cleaning tank 12 can be controlled to work through the control panel 13 on one side, and the high-frequency oscillation signal emitted by the ultrasonic generator is used to make the internal water flow generate high-frequency oscillation, thereby generating a strong shock wave, and the nitrogen needle 3 can be cleaned at this time, and there is no need to disassemble the nitrogen needle 3 separately for cleaning.

[0025] See also Figure 2 and Figure 4 It can be seen that when the nitrogen needle 3 needs to be cleaned, the nitrogen needle 3 can be transferred to the ultrasonic cleaning tank 12, and then the nitrogen needle 3 can be cleaned by the liquid inside the ultrasonic cleaning tank 12.

[0026] A fixed block 14 is installed on the top of the test tube rack 2, and a push rod 15 is connected to one side of the fixed block 14. A connecting block 16 is arranged between the two groups of fixed blocks 14. A movable spring 17 is installed inside the connecting block 16 through a groove. One side of the movable spring 17 is connected to a clamping block 18 that penetrates the connecting block 16. A slider 19 is connected between the bottom of the connecting block 16 and the test tube rack 2. A clamping block 20 is installed on one side of the connecting block 16. A telescopic spring 21 is installed between the slider 19 and the slide groove of the test tube rack 2. The clamping block 20 forms a sliding structure through the connecting block 16 and the slider 19.

[0027] In specific implementation, the nitrogen blowing instrument with a washable nitrogen blowing needle can insert the test tube into the test tube rack 2 when it is necessary to fix a smaller test tube, and then squeeze the push rod 15 on one side of the fixing block 14, so that the push rod 15 squeezes the block 18 in the groove of the fixing block 14, and squeezes the block 18 into the groove of the connecting block 16. At this time, there is no block 18 to limit the connecting block 16, and the connecting block 16 will be reset through the slider 19 and the telescopic spring 21 at the bottom, so that the slider 19 drives the two groups of clamping blocks 20 to move closer to each other through the connecting block 16, and the test tube can be limited and fixed by the movement of the two groups of clamping blocks 20 closer to each other;

[0028] On the contrary, the connecting block 16 can be pulled to one side, and the telescopic spring 21 can be stretched through the connecting block 16 and the slider 19. When the clamping blocks 18 on both sides of the connecting block 16 move to one side of the fixed block 14, they are squeezed by the outer wall of the fixed block 14, causing the clamping blocks 18 to shrink into the groove of the connecting block 16 and squeeze the movable spring 17 in the groove. When the clamping blocks 18 move to the groove position of the fixed block 14, the clamping blocks 18 are reset by the movable spring 17, thereby docking in the groove of the fixed block 14. Due to the limiting effect of the clamping blocks 18, the clamping blocks 20 are located on both sides of the test tube groove, thereby not affecting the normal placement of the test tube.

[0029] See also Figure 3 , Figure 4 and Figure 5 It can be seen that when in use, the test tubes can be inserted into the grooves of the test tube rack 2 according to the requirements of test tubes of different thicknesses, and the test tubes can be limited and fixed by the clamping blocks 20 on both sides, so that test tubes of different sizes can be limited and fixed.

[0030] In summary, when using the nitrogen blowing instrument with a cleanable nitrogen blowing needle, the sample can be injected into the test tube, and then the test tube is inserted into the groove of the test tube rack 2 through the groove in turn, and the test tube rack 2 is placed in the groove of the heating host 1, and then the heating host 1 is started. By adding the host, the test tube rack 2 and the test tube can be heated, and then the screw sleeve 9 drives the connecting frame 4 to move downward through the cooperation of the driving motor 7 and the screw rod 8. At this time, the nitrogen needle 3 can be inserted into the test tube, and then nitrogen is provided by the air supply hose 5, and each of the nitrogen needles 3 can be independently pulled up and down. A knob nut 22 is installed on the top of the nitrogen needle 3, and the tightness of the nitrogen needle 3 can be adjusted, so that each nitrogen needle 3 can be independently displaced up and down, so as to facilitate nitrogen blowing of the sample. This is the use feature of the nitrogen blowing instrument with a cleanable nitrogen blowing needle. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nitrogen blowing apparatus capable of cleaning a nitrogen blowing needle, comprising: A heating main unit (1), a support frame (6) and a rotating nut (22), characterized in that a test tube rack (2) is installed on the top of the heating main unit (1) through a groove, a nitrogen needle (3) is arranged on the top of the test tube rack (2), a connecting frame (4) is installed on the top of the nitrogen needle (3), a gas supply hose (5) is connected to the top of the connecting frame (4), the support frame (6) is arranged on one side of the connecting frame (4), and the rotating nut (22) is connected between the gas supply hose (5) and the nitrogen needle (3).

2. A nitrogen blowing apparatus with a washable nitrogen blowing needle according to claim 1, characterized in that: A driving motor (7) is installed on the top of the support frame (6), and a screw rod (8) penetrating the support frame (6) is connected to the bottom of the driving motor (7), and a threaded sleeve (9) is sleeved on the outer side of the screw rod (8).

3. A nitrogen blowing apparatus with a washable nitrogen blowing needle according to claim 2, characterized in that: The bottom of the support frame (6) is connected to a driving shaft (10) penetrating the heating main unit (1) via a coupling, and the bottom of the driving shaft (10) is connected to a rotating motor (11) via a coupling, and the rotating motor (11) is installed inside the heating main unit (1).

4. A nitrogen blowing apparatus with a washable nitrogen blowing needle according to claim 3, characterized in that: An ultrasonic cleaning tank (12) is installed on one side of the heating main unit (1), and a control panel (13) is installed on one side of the ultrasonic cleaning tank (12).

5. A nitrogen blowing apparatus with a washable nitrogen blowing needle according to claim 1, characterized in that: A fixing block (14) is installed on the top of the test tube rack (2), a top rod (15) is connected through one side of the fixing block (14), and a connecting block (16) is arranged between two groups of the fixing blocks (14).

6. A nitrogen blowing apparatus with a washable nitrogen blowing needle according to claim 5, characterized in that: A movable spring (17) is installed inside the connecting block (16) via a groove, and one side of the movable spring (17) is connected to a clamping block (18) that passes through the connecting block (16).

7. A nitrogen blowing apparatus with a washable nitrogen blowing needle according to claim 6, characterized in that: A slider (19) is connected between the bottom of the connecting block (16) and the test tube rack (2), a clamping block (20) is installed on one side of the connecting block (16), and a telescopic spring (21) is installed between the slider (19) and the slide groove of the test tube rack (2).

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