A Kjeldahl nitrogen analyzer digestion furnace observation device

Abstract

The utility model relates to the technical field of Kjeldahl nitrogen analyzer devices, and discloses a Kjeldahl nitrogen analyzer digestion furnace observation device, including a fuselage, an observation window fixedly installed on the side wall of the fuselage, a sliding column fixedly connected to the top of the fuselage, a limiting disk fixedly connected to the top of the sliding column, a test tube rack slidably connected to the outer wall of the sliding column, and limiting plates slidably connected to both sides of the test tube rack. A lifting assembly is provided on the top of the fuselage, a cooling assembly is provided on the top of the fuselage, a hydraulic cylinder is fixedly installed on the top of the fuselage, one end of the hydraulic rod in the hydraulic cylinder is fixedly connected to a rack column, and the top tooth part of the rack column is meshed and connected to a main gear. The device can increase the safety of the staff when taking the test tube by arranging the lifting assembly and the cooling assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of Kjeldahl nitrogen analyzer devices, in particular to a Kjeldahl nitrogen analyzer digestion furnace observation device. Background Art

[0002] The Kjeldahl nitrogen analyzer is an instrument that calculates the protein content by measuring the nitrogen content in the sample based on the principle that the nitrogen content in protein is constant. Because the method of measuring and calculating the protein content is called the Kjeldahl method, it is called the Kjeldahl nitrogen analyzer. After the existing Kjeldahl nitrogen analyzer heats and distills the sample tube, the glass sample tube is hot and difficult for the operator to remove. In addition, the glass sample tube is slippery, and there is a risk of falling when taking the hot sample tube.

[0003] The equipment is suitable for analysis, teaching and research in grain and oil testing, feed analysis, plant nutrient testing, soil and fertilizer testing, medicine, chemical industry and other industries. It is an ideal tool for operators.

[0004] In the digestion furnace part of the equipment, the sample status needs to be observed during the experiment, such as micro-boiling, color change, etc. The current observation method is to lift the entire sample rack to observe the sample status. The digestion tube is full of sulfuric acid vapor and the digestion furnace reaches a temperature of more than 350 degrees. If it is lifted, there will be risks of leakage and burns. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a digestion furnace observation device for a Kjeldahl nitrogen analyzer.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model provides the following technical solutions: a Kjeldahl nitrogen analyzer digestion furnace observation device, comprising a body, an observation window fixedly installed on the side wall of the body, a sliding column fixedly connected to the top of the body, a limit plate fixedly connected to the top of the sliding column, a test tube rack slidably connected to the outer wall of the sliding column, and the limit plates slidably connected to both sides of the test tube rack. The part with the through opening on the top of the body and the observation window are made of acid-base corrosion-resistant and high-temperature-resistant glass materials, so that the staff can observe the changes of the test tubes.

[0009] Preferably, a lifting assembly is provided on the top of the fuselage, a cooling assembly is provided on the top of the fuselage, a hydraulic cylinder is fixedly installed on the top of the fuselage, one end of a hydraulic rod in the hydraulic cylinder is fixedly connected to a rack column, and the top toothed portion of the rack column is meshedly connected to a main gear. By providing a hydraulic cylinder, a driving force can be provided for the operation of the lifting assembly.

[0010] Preferably, the outer walls on both sides of the main gear are fixedly connected with a connecting shaft, the two ends of the connecting shaft are fixedly connected with sub-gears, the outer walls of the connecting shaft near the two ends are slidably connected with fixing feet, and the fixing feet are fixedly installed on the top of the fuselage. By fixing the fixing feet to the top of the fuselage with screws, the rotation of the connecting shaft can be made more stable.

[0011] Preferably, the outer wall of the secondary gear is meshed with a tooth column, the top of the tooth column is fixedly connected to the test tube rack, and the outer wall of the tooth column is slidably connected to the body. By welding the tooth column and the test tube rack to each other, the test tube rack can be lifted and lowered.

[0012] Preferably, a wind block plate is fixedly connected to the bottom of the test tube rack, and a straight notch with a size matching the rack column is provided in the middle of the wind block plate. By providing the straight notch, the wind block plate will not hinder the movement of the rack column.

[0013] Preferably, a cooling fan is fixedly installed on the top of the fuselage, the number of the cooling fans is two, and the inner wall of the fuselage is provided with a generating cavity. By providing a cooling fan and providing a sensing head on the wind head of the cooling fan, the air blocking plate can control the operation of the cooling fan.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a Kjeldahl nitrogen analyzer digestion furnace observation device, which has the following beneficial effects:

[0016] 1. The Kjeldahl nitrogen analyzer digestion furnace observation device can enable a worker to observe the changing state of the test tube in the fuselage through the observation window by arranging an observation window on the side wall of the fuselage, can enable the test tube rack to remain stable during the lifting movement and can limit the test tube rack by arranging a sliding column, can limit the test tube rack by arranging a limit plate on the top of the sliding column, thereby preventing the test tube rack from falling off due to excessive lifting, can enable the test tube to perform lifting movement by arranging a lifting component, can enable the test tube that has just completed the reaction to be quickly cooled by arranging a cooling component, so that the worker will not be burned when taking out the test tube.

[0017] 2. This Kjeldahl nitrogen analyzer digestion furnace observation device can provide driving force for the operation of the lifting component by arranging a hydraulic cylinder. By arranging a rack column, the rack column can drive the main gear and the connecting shaft to rotate synchronously when it moves back and forth. At the same time, the two sub-gears can drive the gear column to do lifting movement, and the gear column can drive the test tube rack to do lifting movement. By arranging two cold air fans, the test tube can be cooled. By arranging a wind blocking plate, the operation of the cold air fan can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a main stereoscopic view of the utility model;

[0020] Figure 2 This is a structural diagram of the lifting component of the utility model;

[0021] Figure 3 It is a cross-sectional view of the utility model.

[0022] In the figure: 1. body; 2. observation window; 3. sliding column; 4. limit plate; 5. test tube rack; 6. limit plate; 7. lifting assembly; 70. hydraulic cylinder; 71. rack column; 72. main gear; 73. connecting shaft; 74. sub-gear; 75. gear column; 76. fixed foot; 8. cooling assembly; 80. air cooler; 81. wind blocking plate; 9. generating chamber. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Example 1

[0025] like Figure 1 -

[0026] As shown in FIG. 3 , the utility model provides a Kjeldahl nitrogen analyzer digestion furnace observation device, comprising a body 1, an observation window 2 fixedly mounted on the side wall of the body 1, a sliding column 3 fixedly connected to the top of the body 1, a limit plate 4 fixedly connected to the top of the sliding column 3, a test tube rack 5 slidably connected to the outer wall of the sliding column 3, and limit plates 6 slidably connected to both sides of the test tube rack 5. The portion with a through opening on the top of the body 1 and the observation window 2 are made of acid-base corrosion-resistant and high-temperature-resistant glass materials, so that the staff can observe the changes of the test tubes.

[0027] A lifting assembly 7 is provided on the top of the fuselage 1, a cooling assembly 8 is provided on the top of the fuselage 1, a hydraulic cylinder 70 is fixedly installed on the top of the fuselage 1, one end of the hydraulic rod in the hydraulic cylinder 70 is fixedly connected to a rack column 71, and the top toothed part of the rack column 71 is meshedly connected to a main gear 72. By providing the hydraulic cylinder 70, a driving force can be provided for the operation of the lifting assembly 7.

[0028] The outer walls on both sides of the main gear 72 are fixedly connected with a connecting shaft 73, and the two ends of the connecting shaft 73 are fixedly connected with a sub-gear 74. The outer walls of the connecting shaft 73 near the two ends are slidably connected with fixing feet 76, and the fixing feet 76 are fixedly installed on the top of the fuselage 1. By fixing the fixing feet 76 to the top of the fuselage 1 with screws, the rotation of the connecting shaft 73 can be made more stable.

[0029] In this embodiment, by providing an observation window 2 on the side wall of the fuselage 1, the staff can observe the changing state of the test tube in the fuselage 1 through the observation window 2. By providing the sliding column 3, the test tube rack 5 can be kept stable during the lifting movement and can limit the test tube rack 5. By providing a limiting plate 4 on the top of the sliding column 3, the test tube rack 5 can be limited, thereby preventing the test tube rack 5 from falling off due to excessive lifting. By providing the lifting component 7, the test tube can be lifted and lowered. By providing the cooling component 8, the test tube that has just completed the reaction can be quickly cooled down, so that the staff will not be burned when taking out the test tube.

[0030] Example 2

[0031] like Figure 1 -

[0032] 3, based on Example 1, the utility model provides a technical solution: preferably, the outer wall of the secondary gear 74 is meshedly connected with a tooth column 75, the top of the tooth column 75 is fixedly connected to the test tube rack 5, and the outer wall of the tooth column 75 is slidably connected to the body 1. By welding the tooth column 75 and the test tube rack 5 to each other, the test tube rack 5 can be lifted and lowered.

[0033] The bottom of the test tube rack 5 is fixedly connected with a choke plate 81, and a straight notch with a size matching the rack column 71 is provided in the middle of the choke plate 81. By providing the straight notch, the choke plate 81 can not hinder the movement of the rack column 71.

[0034] A cooling fan 80 is fixedly installed on the top of the fuselage 1, and the number of cooling fans 80 is two. The inner wall of the fuselage 1 is provided with a generating chamber 9. By providing the cooling fan 80 and providing a sensing head on the wind head of the cooling fan 80, the air blocking plate 81 can control the operation of the cooling fan 80.

[0035] In this embodiment, by providing a hydraulic cylinder 70, a driving force can be provided for the operation of the lifting assembly 7. By providing a rack column 71, when the rack column 71 makes a reciprocating motion, it can drive the main gear 72 and the connecting shaft 73 to rotate synchronously. At the same time, the two sub-gears 74 can drive the gear column 75 to make a lifting motion, and the gear column 75 can drive the test tube rack 5 to make a lifting motion. By providing two cooling fans 80, the test tube can be cooled. By providing a wind blocking plate 81, the operation of the cooling fan 80 can be controlled.

[0036] The working principle of the Kjeldahl nitrogen analyzer digestion furnace observation device is described in detail below.

[0037] like Figure 1-3 As shown, when in use, the test tube filled with sample liquid is placed into the hole of the test tube rack 5. After the test tube is placed, the hydraulic cylinder 70 is started. The hydraulic cylinder 70 will push the rack column 71 to move through the hydraulic rod. The teeth on the rack column 71 will drive the main gear 72 to rotate. The rotation of the main gear 72 will drive the connecting shaft 73 to rotate. The rotation of the connecting shaft 73 will drive the auxiliary gears 74 at both ends to rotate. The two auxiliary gears 74 will drive the two gear columns 75 to descend. Therefore, when the two gear columns 75 descend, they will drive the test tube rack 5 to descend. The test tube will pass through the four holes on the top of the fuselage 1 and enter the generating chamber 9 in the fuselage 1. The sample liquid in the test tube will begin to undergo a nitrogen determination reaction. During the reaction of the sample liquid, the staff can observe the changes in the test tube through the observation window 2 on the side wall of the fuselage 1.

[0038] When the nitrogen determination reaction is completed, when the staff needs to take out the test tube, the hydraulic cylinder 70 is started, the hydraulic cylinder 70 will pull back the hydraulic rod, and the rack column 71 will be pulled back. After the rack column 71 is pulled back, it will drive the main gear 72 to rotate in the opposite direction. The main gear 72 will drive the gear column 75 to rise through the connecting shaft 73 and the two sub-gears 74. After the gear column 75 rises, it will drive the test tube rack 5 to rise, and the test tube rack 5 will also drive the air blocking plate 81 to rise. When the nitrogen determination reaction occurs, the air blocking plate 81 will block the cold wind of the air cooler 80, because the air cooler 80 is provided with a sensor head on the wind head. When the sensor head contacts the air blocking plate 81, the sensor head will stop the air cooler 80 through the built-in circuit. When the air blocking plate 81 is not in contact with the sensor head, the air cooler 80 will run to blow air to cool the test tube.

Claims

1. A Kjeldahl nitrogen analyzer digestion furnace observation device, comprising a body (1), characterized in that: An observation window (2) is fixedly mounted on the side wall of the body (1); a sliding column (3) is fixedly connected to the top of the body (1); a limiting plate (4) is fixedly connected to the top of the sliding column (3); a test tube rack (5) is slidably connected to the outer wall of the sliding column (3); and limiting plates (6) are slidably connected to both sides of the test tube rack (5).

2. A Kjeldahl nitrogen analyzer digestion furnace observation device according to claim 1, characterized in that: A lifting assembly (7) is arranged on the top of the fuselage (1), a cooling assembly (8) is arranged on the top of the fuselage (1), a hydraulic cylinder (70) is fixedly installed on the top of the fuselage (1), one end of a hydraulic rod in the hydraulic cylinder (70) is fixedly connected to a rack column (71), and a top toothed portion of the rack column (71) is meshedly connected to a main gear (72).

3. A Kjeldahl nitrogen analyzer digestion furnace observation device according to claim 2, characterized in that: The outer walls on both sides of the main gear (72) are fixedly connected to a connecting shaft (73), the two ends of the connecting shaft (73) are fixedly connected to auxiliary gears (74), and the outer walls of the connecting shaft (73) near the two ends are slidably connected to fixing feet (76), and the fixing feet (76) are fixedly installed on the top of the fuselage (1).

4. A Kjeldahl nitrogen analyzer digestion furnace observation device according to claim 3, characterized in that: The outer wall of the secondary gear (74) is meshedly connected with a gear column (75), the top of the gear column (75) is fixedly connected to the test tube rack (5), and the outer wall of the gear column (75) is slidably connected to the body (1).

5. The Kjeldahl nitrogen analyzer digestion furnace observation device according to claim 1, characterized in that: The bottom of the test tube rack (5) is fixedly connected with a wind blocking plate (81), and a straight notch with a size matching that of the rack column (71) is provided in the middle of the wind blocking plate (81).

6. The Kjeldahl nitrogen analyzer digestion furnace observation device according to claim 1, characterized in that: A cooling air fan (80) is fixedly installed on the top of the fuselage (1), and the number of the cooling air fans (80) is two. The inner wall of the fuselage (1) is provided with a generating chamber (9).

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