CN212111291U

CN212111291U - Automatic Kjeldahl apparatus

Info

Publication number: CN212111291U
Application number: CN202020528371.8U
Authority: CN
Inventors: 何敏; 李利娟; 邱冬雪; 谢林
Original assignee: Sichuan Zhong Zhong Quality Technology Inspection Co ltd
Current assignee: Sichuan Zhenxing Testing Technology Co.,Ltd.
Priority date: 2020-04-11
Filing date: 2020-04-11
Publication date: 2020-12-08
Anticipated expiration: 2030-04-11

Abstract

The utility model relates to an automatic kjeldahl azotometer belongs to the technical field of the measuring equipment of nitrogen content, and it includes the shell, the vertical rotation axis that is provided with on the bottom in the shell, the bottom of rotation axis is provided with the motor, the top of rotation axis is improved level and is provided with the tray, the flask has been placed on the tray, be provided with the centre gripping subassembly that is used for the centre gripping flask in the shell, the centre gripping subassembly includes the telescopic link that the level set up and the sleeve of vertical setting, the articulated setting of one end of telescopic link is on the inner wall of shell, just the other end of telescopic link is rotated and is set up on telescopic lateral wall, the sleeve cover is established on the flask, just vertical direction lift can be followed to the centre gripping subassembly. The utility model discloses have the effect of the stability of being convenient for improve the flask.

Description

Automatic Kjeldahl apparatus

Technical Field

The utility model belongs to the technical field of the measuring equipment's of nitrogen content technique and specifically relates to an automatic kjeldahl azotometer is related to.

Background

The kjeldahl apparatus is an apparatus for calculating the protein content by measuring the nitrogen content in a sample based on the principle that the nitrogen content in the protein is constant, and the method for measuring and calculating the protein content is called kjeldahl method, and is therefore called kjeldahl apparatus.

The Kjeldahl nitrogen determination instrument can detect the nitrogen content and the protein content in grains, food, feed, water, soil, silt, sediment and chemicals, has quite good cost performance, and is widely used for analyzing the nitrogen content or the protein content of samples such as food, crops, seeds, soil, fertilizers and the like.

Chinese patent No. CN209784386U discloses a kjeldahl nitrogen determination instrument convenient for sample injection, which comprises a housing, a rotating shaft is installed on the bottom surface of the inner side of the housing, a motor is installed at the bottom end of the rotating shaft, and a tray is installed on the upper end surface of the rotating shaft, so that when the rotating shaft is driven by the motor to rotate, the tray starts to rotate along with the rotating shaft, thereby uniformly stirring samples in beakers on the tray.

However, the kjeldahl azotometer has the disadvantage that the beaker is placed on the tray, and when the tray rotates, the beaker containing the solution to be measured is likely to shake and even topple over and pour out the solution to be measured.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art exists, the utility model aims at providing an automatic kjeldahl azotometer has the effect of the stability of being convenient for improve the flask.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an automatic kjeldahl azotometer, includes the shell, the vertical rotation axis that is provided with in the shell on the bottom, the bottom of rotation axis is provided with the motor, the top of rotation axis is improved level and is provided with the tray, the flask has been placed on the tray, be provided with the centre gripping subassembly that is used for the centre gripping flask in the shell, the centre gripping subassembly includes the telescopic link that the level set up and the sleeve of vertical setting, the articulated setting of one end of telescopic link is on the inner wall of shell, just the other end of telescopic link rotates and sets up on telescopic lateral wall, the sleeve cover is established on the flask, just the centre gripping subassembly can go up and down along vertical direction.

By adopting the technical scheme, when the flask is placed in the nitrogen determination instrument, the clamping component capable of lifting along the vertical direction is lifted, so that the clamping component does not influence the placement of the flask, then the flask is placed on the tray, then the clamping component moves downwards, the sleeve is sleeved at the bottleneck of the flask, and then the motor is started, so that the rotating shaft drives the tray to start rotating, and further the solution to be measured in the flask is uniformly stirred; and at the rotatory circumferential direction's of flask in-process, carry out certain fixed with the flask through centre gripping subassembly to have the effect of the stability of being convenient for improve the flask.

The present invention may be further configured in a preferred embodiment as: the telescopic link includes fixed pipe and carriage release lever, fixed pipe hinged joint is on the inner wall of shell, the carriage release lever slides and sets up in the fixed pipe, the one end that fixed pipe was kept away from to the carriage release lever is rotated and is set up on the sleeve.

By adopting the technical scheme, the sleeve is always sleeved on the flask, so that the length of the telescopic rod can be gradually changed in the circumferential rotation process of the flask, and when the flask rotates towards the direction close to the telescopic rod, the whole length of the telescopic rod can be shortened; when the flask rotates towards the direction far away from the telescopic rod, the whole length of the telescopic rod can be lengthened; and the telescopic link is articulated to be set up on the outer wall, and the telescopic link rotates to set up on the sleeve to when the flask rotated, the centre gripping subassembly had the effect of firm flask all the time.

The present invention may be further configured in a preferred embodiment as: a Teflon layer is arranged in the fixed pipe.

By adopting the technical scheme, the Teflon is generally called as a non-stick coating, and the material has the characteristics of high temperature resistance and extremely low friction coefficient, so that the Teflon can be coated on the inner wall of the fixed tube, and has the effect of enabling the movable rod to slide more smoothly in the fixed tube.

The present invention may be further configured in a preferred embodiment as: the inner wall of the shell is provided with a sliding groove along the vertical direction, a sliding plate is arranged in the sliding groove in a sliding mode, one end, close to the inner wall of the shell, of the fixed pipe is hinged to the sliding plate, and a fixing piece used for fixing the sliding plate is arranged on the sliding plate.

By adopting the technical scheme, when the flask needs to be placed on the tray, the sliding plate firstly slides upwards along the sliding groove, the sliding plate is fixed through the fixing piece, and then the flask is placed on the tray, so that the effect that the clamping assembly does not influence the placement of the flask is achieved; then the fixing piece is taken off, the sliding plate slides downwards along the sliding groove until the sleeve is sleeved on the bottleneck of the flask, and then the sliding plate is fixed by the fixing piece again, so that the effect of improving the stability of the clamping assembly is achieved.

The present invention may be further configured in a preferred embodiment as: the fixing piece comprises a bolt, a positioning hole is formed in the sliding plate, a high-level groove and a low-level groove in the horizontal direction are formed in the bottom wall of the sliding groove, and the bolt can penetrate through the positioning hole and be inserted into the high-level groove or the low-level groove.

By adopting the technical scheme, when the flask needs to be placed, the sliding plate is upwards slid and the positioning hole is communicated with the high-level groove, and then the plug pin penetrates through the positioning hole and is inserted into the high-level groove; when the flask needs to be stabilized, the sliding plate is slid downwards, the positioning hole is communicated with the low-level groove, and then the bolt passes through the positioning hole and is inserted into the low-level groove, so that the effect of conveniently fixing the sliding plate is achieved.

The present invention may be further configured in a preferred embodiment as: and a rubber ring is arranged on the inner wall of the sleeve.

Through adopting above-mentioned technical scheme, be provided with the rubber circle in the sleeve, the rubber circle can increase the frictional force between sleeve and the flask to have the effect of further reinforcing the stability to the flask.

The present invention may be further configured in a preferred embodiment as: the tray is provided with a plurality of flexure strips all around, and is a plurality of the flexure strip is contradicted on the lateral wall of flask.

Through adopting above-mentioned technical scheme, when placing the flask on the tray, can use the flexure strip to support the flask tightly, and then have the effect of further improvement to the stability of flask.

To sum up, the utility model discloses a following at least one useful technological effect:

1. in the circumferential rotating process of the flask rotation, the flask is fixed to a certain degree through the telescopic rod and the sleeve, so that the effect of improving the stability of the flask is facilitated;

2. when the flask needs to be placed on the tray, the sliding plate slides upwards along the sliding groove, the sliding plate is fixed through the bolt, and then the flask is placed on the tray, so that the effect that the clamping assembly does not influence the placement of the flask is achieved;

3. when needing to carry out the stability to the flask for the sliding plate slides down along the spout, establish on the bottleneck of flask until the cover barrel casing, then pass the locating hole with the bolt and insert the low level inslot, and then fix the sliding plate, thereby have the effect that improves the stability of centre gripping subassembly.

Drawings

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

fig. 2 is a partial exploded sectional view for showing a connection relationship between the sliding plate and the chute according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a partial explosion showing the connection between the sleeve and the flask according to an embodiment of the present invention;

fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

Reference numerals: 1. a housing; 11. a rotating shaft; 111. a motor; 112. a tray; 1121. an elastic sheet; 113. a flask; 12. a telescopic rod; 121. a fixed tube; 1211. a Teflon layer; 122. a travel bar; 13. a sleeve; 131. a rubber ring; 132. a rolling bearing; 14. a chute; 141. a head tank; 142. a low tank; 143. a sliding groove; 15. a sliding plate; 151. positioning holes; 152. a slide bar; 16. and (4) a bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses an automatic kjeldahl apparatus, including shell 1, vertically be provided with rotation axis 11 on the bottom in the shell 1, the bottom of rotation axis 11 is provided with and is used for driving rotation axis 11 pivoted motor 111, and the top of rotation axis 11 is improved level and is provided with tray 112, and is not coaxial between rotation axis 11 and the tray 112.

Referring to fig. 1 and 2, a flask 113 is placed on the tray 112, a plurality of elastic pieces 1121 are disposed around the tray 112, and the plurality of elastic pieces 1121 are abutted against the side wall of the flask 113, thereby having an effect of improving the stability of the flask 113.

When the starting motor 111 rotates, the rotating shaft 11 drives the tray 112 to start rotating, and because the rotating shaft 11 and the tray 112 are not coaxial, the tray 112 and the flask 113 circumferentially rotate around the rotating shaft 11 as a center, so that the liquid to be measured contained in the flask 113 can be stirred more uniformly.

Referring to fig. 2, a sliding groove 14 is formed in the inner wall of the housing 1 along the vertical direction, a sliding plate 15 is slidably disposed in the sliding groove 14, a sliding groove 143 is formed in the side wall of the sliding groove 14, sliding bars 152 are disposed on two sides of the sliding plate 15, and the sliding bars 152 and the sliding groove 143 are adapted to each other; the sliding plate 15 can slide in the sliding groove 14 along the vertical direction, and the sliding bar 152 moves along the sliding groove 143 during the sliding of the sliding plate 15, thereby having both the effect of preventing the sliding plate 15 from easily falling out of the sliding groove 14 and the guiding function.

Referring to fig. 2 and 3, the sliding plate 15 is provided with a fixing member for fixing the sliding plate 15, the fixing member includes a plug 16, the sliding plate 15 is provided with a positioning hole 151, the bottom wall of the sliding slot 14 is provided with a horizontal high-level slot 141 and a horizontal low-level slot 142, and the plug 16 can pass through the positioning hole 151 and be inserted into the high-level slot 141 or the low-level slot 142.

Referring to fig. 2 and 3, a clamping assembly for clamping the flask 113 is arranged in the housing 1, and comprises a horizontally arranged telescopic rod 12 and a vertically arranged sleeve 13; and the inner wall of the sleeve 13 is provided with a rubber ring 131; the telescopic rod 12 includes a fixed tube 121 and a movable rod 122, one end of the fixed tube 121 is hinged to the sliding plate 15, and the fixed tube 121 can rotate in a horizontal plane.

Referring to fig. 3 and 4, the moving rod 122 is slidably disposed in the fixed tube 121, a teflon layer 1211 is disposed in the fixed tube 121, one end of the moving rod 122, which is away from the fixed tube 121, is rotatably disposed on the sleeve 13, a rolling bearing 132 is disposed on an outer wall of the sleeve 13, an inner ring of the rolling bearing 132 is in interference fit with the outer wall of the sleeve 13, and an outer ring of the rolling bearing 132 is connected to the moving rod 122.

The fixed rod is hinged to the sliding plate 15, and a rolling bearing 132 is arranged between the moving rod 122 and the sleeve 13, so that the sleeve 13 is connected with the sleeve 13 all the time along with the rotation of the flask 113, the telescopic rod 12 can be connected with the sleeve 13, the flask 113 is not prone to shaking or toppling in the rotation process, and the effect of improving the stability of the flask 113 is achieved.

The implementation principle of the embodiment is as follows: before the measurement is started, the sliding plate 15 is firstly moved upwards until the positioning hole 151 on the sliding plate 15 is communicated with the high-level groove 141 in the sliding groove 14, then the bolt 16 is inserted into the high-level groove 141 through the positioning hole 151, the telescopic rod 12 and the sleeve 13 can be fixed, and the height of the sleeve 13 from the tray 112 is larger than that of the flask 113, so that the effect of placing the flask 113 on the tray 112 is not influenced.

Then, the flask 113 is placed on the tray 112, and the elastic piece 1121 is abutted against the outer wall of the flask 113, so that the stability of the flask 113 during rotation can be enhanced to some extent, and the flask 113 is not easily slipped out from the tray 112.

Then, the plug 16 is pulled out from the positioning hole 151 and the high-level groove 141, and the sliding plate 15 is moved downwards until the positioning hole 151 on the sliding plate 15 is communicated with the low-level groove 142 in the sliding chute 14, and then the plug 16 is inserted into the positioning hole 151 and the low-level groove 142 again, at this time, the sleeve 13 is sleeved on the bottleneck of the flask 113, and the rubber ring 131 in the sleeve 13 can increase the friction force between the sleeve 13 and the flask 113, which has the effect of enabling the contact between the sleeve 13 and the flask 113 to be tighter.

Then, the motor 111 is started, so that the rotating shaft 11 drives the tray 112 and the flask 113 to rotate in the horizontal plane, when the flask 113 gradually approaches the telescopic rod 12, the whole length of the telescopic rod 12 is shortened, that is, the movable rod 122 is retracted into the fixed tube 121 along the length direction of the fixed tube 121; when the flask 113 is gradually separated from the telescopic rod 12, the entire length of the telescopic rod 12 is lengthened, that is, the moving rod 122 is protruded out of the fixing tube 121 along the length direction of the fixing tube 121.

With the above arrangement, the flask 113 is rotated in a horizontal plane, thereby having an effect of facilitating improvement of stability of the flask 113.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an automatic kjeldahl azotometer, includes shell (1), vertically be provided with rotation axis (11) on the bottom in shell (1), the bottom of rotation axis (11) is provided with motor (111), the top of rotation axis (11) is improved level and is provided with tray (112), flask (113) have been placed on tray (112), its characterized in that: be provided with the centre gripping subassembly that is used for centre gripping flask (113) in shell (1), the centre gripping subassembly includes telescopic link (12) and sleeve (13) of vertical setting that the level set up, the articulated setting of one end of telescopic link (12) is on the inner wall of shell (1), just the other end of telescopic link (12) is rotated and is set up on the lateral wall of sleeve (13), sleeve (13) cover is established on flask (113), just the centre gripping subassembly can be followed vertical direction and gone up and down.

2. The automatic kjeldahl apparatus according to claim 1, wherein: telescopic link (12) are including fixed pipe (121) and carriage release lever (122), fixed pipe (121) are articulated to be connected on the inner wall of shell (1), carriage release lever (122) slide to be set up in fixed pipe (121), the one end rotation setting on sleeve (13) of fixed pipe (121) is kept away from in carriage release lever (122).

3. The automatic kjeldahl apparatus according to claim 2, wherein: a Teflon layer (1211) is arranged in the fixed pipe (121).

4. The automatic kjeldahl apparatus according to claim 2, wherein: the inner wall of the shell (1) is provided with a sliding groove (14) in the vertical direction, a sliding plate (15) is arranged in the sliding groove (14) in a sliding mode, one end, close to the inner wall of the shell (1), of the fixing pipe (121) is hinged to the sliding plate (15), and a fixing piece used for fixing the sliding plate (15) is arranged on the sliding plate (15).

5. The automatic kjeldahl apparatus according to claim 4, wherein: the fixing piece comprises a bolt (16), a positioning hole (151) is formed in the sliding plate (15), a high-level groove (141) and a low-level groove (142) in the horizontal direction are formed in the bottom wall of the sliding groove (14), and the bolt (16) can penetrate through the positioning hole (151) and can be inserted into the high-level groove (141) or the low-level groove (142).

6. The automatic kjeldahl apparatus according to claim 1, wherein: and a rubber ring (131) is arranged on the inner wall of the sleeve (13).

7. The automatic kjeldahl apparatus according to claim 1, wherein: a plurality of elastic pieces (1121) are arranged on the periphery of the tray (112), and the elastic pieces (1121) abut against the side wall of the flask (113).