CN211741279U - A auxiliary device for determining effective calcium magnesium content of lime - Google Patents

Abstract

The utility model belongs to the technical field of the technique of chemistry survey and specifically relates to a an auxiliary device for surveying effective calcium magnesium content of lime is related to, set up the rolling disc on the plummer with sliding including the plummer, be provided with the slewing mechanism who is used for driving the rolling disc rotation on the rolling disc, be provided with the reciprocating mechanism who is used for driving the rolling disc and is straight reciprocating motion on the plummer, still be provided with on the rolling disc and be used for fixing the mounting on the rolling disc with the erlenmeyer flask. The utility model discloses a reciprocating mechanism drive rolling disc reciprocating motion can destroy the vortex of liquid in the erlenmeyer flask, and then improves the even degree that sample mixes in the erlenmeyer flask.

Description

A auxiliary device for determining effective calcium magnesium content of lime

Technical Field

The utility model belongs to the technical field of the technique of chemistry survey and specifically relates to an auxiliary device for determining effective calcium magnesium content of lime.

Background

In the process of measuring the content of the effective calcium and magnesium in the limestone, a sample needs to be dissolved by acid, the pH value is adjusted, calcium or magnesium is respectively combined by using a calcium indicator or chrome black T, and then the combined sample is titrated by using EDTA until the color of the solution changes, so that the content of calcium oxide and magnesium oxide in the sample can be calculated by using the amount of EDTA and the amount of the calcium indicator and the chrome black T.

During the acid dissolution, the limestone needs to be dissolved by hydrochloric acid. The above process is generally carried out in erlenmeyer flasks. In order to accelerate the above-mentioned acid dissolution process, in the prior art, the hydrochloric acid and limestone in the conical flask are thoroughly mixed by magnetic stirring. However, during magnetic stirring, the liquid tends to swirl along the side wall of the erlenmeyer flask, resulting in less than uniform mixing of the liquid in the erlenmeyer flask.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an auxiliary device for surveying effective calcium magnesium content of lime, can reduce the vortex that produces in the erlenmeyer flask, and then make the liquid misce bene in the erlenmeyer flask.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides an auxiliary device for determining effective calcium magnesium content of lime, includes the plummer and slides and set up the rolling disc on the plummer, be provided with the slewing mechanism who is used for driving the rolling disc rotation on the rolling disc, be provided with the reciprocating mechanism who is used for driving the rolling disc to do straight reciprocating motion on the plummer, still be provided with the mounting that is used for fixing the erlenmeyer flask on the rolling disc.

Can fix the erlenmeyer flask on the rolling disc through the mounting, slewing mechanism can drive the rolling disc and rotate on the plummer to liquid in the erlenmeyer flask mixes. In the process of rotation of the rotating mechanism, the reciprocating mechanism can drive the rotating disc to reciprocate on the bearing table, so that the vortex generated by rotation of liquid in the cone on the bearing table is damaged, and the liquid in the conical bottle is uniformly mixed.

The present invention may be further configured in a preferred embodiment as: a sliding groove is formed in the bearing table, a sliding piece is arranged on the rotating disc, and the sliding piece is arranged in the sliding groove in a sliding mode; the reciprocating mechanism comprises a cam rotationally arranged on the bearing table and a return spring fixedly arranged on the bearing table, the cam is abutted against the sliding piece, the axial lead of the return spring is parallel to the length direction of the sliding chute, one end of the return spring is abutted against one end wall of the sliding chute, and the other end of the return spring is abutted against one side of the sliding piece, which is back to the cam; the plummer is also provided with a rotary driving piece for driving the cam to rotate.

Through adopting above-mentioned technical scheme, rotate driving piece drive cam and rotate, the cam can promote the slider to move to one side of reset spring in the spout, and reset spring then can promote the slider to slide to cam one side when the cam continues to rotate, and then makes the rotating disc on slider and the slider take place reciprocating motion along the spout, and then destroys the vortex in the erlenmeyer flask. In the process, the reciprocating motion of the rotating disc can be limited by the sliding groove, and the reciprocating motion process of the rotating disc is more stable. And the structure is simple and easy to maintain.

The present invention may be further configured in a preferred embodiment as: the rotating mechanism comprises a gear ring fixedly arranged around the rotating disc, a fixed frame fixedly connected to the sliding piece, a rotating motor fixedly arranged on the fixed frame and a driving gear fixedly arranged on an output shaft of the rotating motor, and the driving gear is meshed with the gear ring; the lower fixed surface of mount is provided with the stopper, the guide way has been seted up on the plummer, the guide way is on a parallel with the spout, just the stopper slides and sets up in the guide way.

Through adopting above-mentioned technical scheme, rotate the motor and drive gear and rotate, and then make drive gear drive ring gear rotate to drive the rolling disc and rotate for the slider. In the process, the rotating motor and the fixing frame can be limited by the limiting blocks and the guide grooves, and then only synchronous reciprocating motion can be generated with the rotating disc, and the rotating disc can not rotate relative to the bearing table, so that the rotating torque required to be driven by the rotating motor can be actually facilitated, the compounding of the motor can be facilitated to be reduced, the number of mechanisms which are rotated on the bearing table is reduced, and the structure is simpler to set.

The present invention may be further configured in a preferred embodiment as: the slider is including rotating the fixture block of keeping away from rolling disc one end in the cylindrical connecting rod of connecting in the lower surface centre of a circle department of rolling disc and fixed connection in the connecting rod, be provided with first gyro wheel on the fixture block, first gyro wheel card is located in the spout, the mount includes fixed connection in the connecting rod and fixed the setting and keep away from connecting rod one end in the connecting rod and be used for placing the platform of placing of rotating the motor, the stopper is fixed to be set up in the lower surface of placing the platform.

Through adopting above-mentioned technical scheme, at this supplementary decoration and carry out the in-process that oscillates to the erlenmeyer flask, can reduce the frictional force between slider and the spout through first gyro wheel, and then make the reciprocating motion process of rolling disc more smooth, reduce mechanical loss to improve equipment's life.

The present invention may be further configured in a preferred embodiment as: the rotation driving piece includes fixed vibrating motor, coaxial fixed connection that set up on the plummer driving gear, the driven gear who meshes the driving gear and rotate the connecting axle of connecting in the plummer that sets up on the vibrating motor output shaft, connecting axle and cam fixed connection, just the connecting axle passes through key cooperation fixed connection in driven gear, the number of teeth and the radius of driving gear all are greater than driven gear.

Through adopting above-mentioned technical scheme, at the rolling disc rotation and reciprocating motion's in-process, support piece can play the effect of supporting the rolling disc to help reducing the possibility that the rolling disc emptys, improve equipment's stability. And the lower extreme of bracing piece is provided with the second gyro wheel, and the upper end is provided with the ball, can become rolling friction with sliding friction to frictional force when further reducing equipment motion, and then reduce the wearing and tearing of equipment.

The present invention may be further configured in a preferred embodiment as: the rotation driving piece includes fixed vibrating motor, coaxial fixed connection that set up on the plummer driving gear, the driven gear who meshes the driving gear and rotate the connecting axle of connecting in the plummer that sets up on the vibrating motor output shaft, connecting axle and cam fixed connection, just the connecting axle passes through key cooperation fixed connection in driven gear, the number of teeth and the radius of driving gear all are greater than driven gear.

Through adopting above-mentioned technical scheme, can utilize the amplification effect between driving gear and the driven gear, and then make the slew velocity increase of cam, help improving the vibration effect, and then the degree of consistency that the sample mixes.

The present invention may be further configured in a preferred embodiment as: the fixing piece comprises a support frame fixedly arranged on the rotating disc, a fixing ring used for tightly supporting the conical flask from top to bottom and a supporting piece used for pushing the fixing ring to slide downwards and tightly support the conical flask, a guide rod is fixedly arranged on the fixing ring, the guide rod penetrates through the support frame and is in sliding connection with the support frame, and the length direction of the guide rod is perpendicular to the plane where the bearing platform is located.

Through adopting above-mentioned technical scheme, when needs use the mounting to fix the erlenmeyer flask, can place the erlenmeyer flask on the rolling disc to promote solid fixed ring top-down through holding tightly and support tightly the erlenmeyer flask on the rolling disc, and then fix the erlenmeyer flask. The bottle mouth of the conical bottle can penetrate through the fixing ring and is not affected. The fixing piece can be used for fixing conical bottles with different sizes, and has a wide application range.

The present invention may be further configured in a preferred embodiment as: the one side of solid fixed ring towards the centre of a circle is from being close to one side downward sloping of solid fixed ring centre of a circle to keeping away from one side of solid fixed ring centre of a circle, gu fixed ring's the one side towards the centre of a circle is fixed and is provided with the elasticity bed course.

Through adopting above-mentioned technical scheme, the solid fixed ring lower surface slope can laminate the lateral wall of erlenmeyer flask better to fix the erlenmeyer flask more steadily through the elastic cushion, make the erlenmeyer flask be difficult for breaking because of the uneven emergence of atress.

The present invention may be further configured in a preferred embodiment as: be provided with the screw hole on the support frame, the axial lead of screw hole is on a parallel with the guide bar, support the piece and include screw rod, rotation connection fixed plate and fixed connection that threaded connection in the screw rod in the screw hole are used for handheld and drive screw rod pivoted handle in screw rod one end, the guide bar is kept away from solid fixed ring's one end fixed connection in the fixed plate one side towards the rolling disc.

Through the threaded connection structure between the screw rod and the threaded hole, when the screw rod is rotated, the screw rod and a fixing plate which is connected to the screw rod can be controlled to move relative to the rotating disc, and then the guide rod and the fixing ring are driven to move relative to the rotating disc. The conical bottle on the rotating disc can be more firmly fixed through the self-locking property of the threaded connection, so that the conical bottle is not easy to fall off due to rotation or reciprocating motion.

The present invention may be further configured in a preferred embodiment as: the rotating disc is provided with a placing groove, and a rubber anti-slip layer is fixedly arranged on the bottom surface of the placing groove.

Through adopting above-mentioned technical scheme, the rubber skid resistant course can play the antiskid effect on the one hand, makes the erlenmeyer flask more stable on the rolling disc, is difficult for the slippage. On the other hand, the rubber anti-skid layer can also play a role in buffering, so that the conical flask is not required to be directly and rigidly connected with the bottom surface of the placing groove, and the conical flask is further protected.

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

1. the utility model discloses in, the rolling disc drives the erlenmeyer flask rotation, and reciprocating mechanism promotes the rolling disc and is reciprocating motion to can destroy the vortex in the erlenmeyer flask, make the sample mixture in the erlenmeyer flask more even.

2. The utility model discloses in, rolling disc and slider rotate to be connected, consequently when the drive rolling disc rotates, slewing mechanism need not to rotate along with the rolling disc, and then has reduced pivoted moment to the load that rotates the motor has been reduced.

3. The utility model discloses in, set up the support piece that supports in supporting the groove through supporting the groove and sliding and support the rolling disc, help keeping the stability of rolling disc.

4. The utility model discloses in, fix the erlenmeyer flask through the solid fixed ring top-down of screw drive, can install the erlenmeyer flask of different models on the rolling disc, and then enlarged the application scope of equipment.

Drawings

FIG. 1 is a schematic structural diagram of an auxiliary device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a reciprocating mechanism in an embodiment of the present invention;

FIG. 3 is a schematic structural view of the carrier of the present invention;

fig. 4 is a schematic structural diagram of a fixing member in an embodiment of the present invention.

In the figure, 1, a bearing platform; 11. a base; 12. a chute; 13. a support groove; 14. a guide groove; 2. rotating the disc; 21. an annular groove; 22. a rubber anti-slip layer; 23. a placement groove; 3. a rotating mechanism; 31. a ring gear; 32. a fixed mount; 321. a connecting rod; 322. a placing table; 323. a limiting block; 33. rotating the motor; 34. a drive gear; 4. a slider; 41. a connecting rod; 42. a clamping block; 43. a first roller; 5. a reciprocating mechanism; 51. rotating the driving member; 511. a vibration motor; 512. a driving gear; 513. a driven gear; 514. a connecting shaft; 52. a cam; 53. a return spring; 6. a fixing member; 61. a support frame; 62. a fixing ring; 621. an elastic cushion layer; 63. an abutting piece; 631. a screw; 632. a fixing plate; 633. a handle; 64. a guide bar; 65. a threaded hole; 7. a conical flask; 8. a support member; 81. a support bar; 82. a second roller; 83. and a ball.

Detailed Description

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

Example (b): an auxiliary device for measuring the content of available calcium and magnesium in lime, referring to fig. 1, comprises a base 11, a bearing platform 1 arranged on the base 11 and a rotating disc 2 arranged on the bearing platform 1 in a sliding manner. The carrier table 1 is provided with a reciprocating mechanism 5 for driving the rotating disc 2 to reciprocate linearly with respect to the carrier table 1, and the rotating disc 2 is provided with a rotating mechanism 3 for driving the rotating disc 2 to rotate with respect to the axis of the rotating disc 2. The turn disc 2 is further provided with a fixing member 6 for fixing the erlenmeyer flask 7 to the turn disc 2.

After the conical flask 7 is fixed on the rotating disc 2 through the fixing piece 6, the reciprocating mechanism 5 drives the rotating disc 2 to do linear reciprocating motion on the bearing platform 11, so that the vortex generated in the rotating process of the conical flask 7 can be destroyed, and the sample in the conical flask 7 is mixed more uniformly.

Referring to fig. 2 and 3, a sliding groove 12 is formed in the plummer 1, a sliding part 4 is rotatably disposed at the center of a circle of the lower surface of the rotating disc 2, the sliding part 4 includes a cylindrical connecting rod 41 rotatably disposed at the lower surface of the rotating disc 2 and a fixture block 42 fixedly connected to the connecting rod 41 and far away from one end of the rotating disc 2, the fixture block 42 is clamped in the sliding groove 12, a first roller 43 is rotatably disposed on each of two sides of the fixture block 42, the upper side and the lower side of the first roller 43 are respectively abutted to the inner walls of the upper side and the lower side of the sliding groove 12, and. The reciprocating mechanism 5 comprises a cam 52 rotatably connected to the carrier 1 and a return spring 53 fixedly arranged on the carrier 1, wherein the cam 52 abuts against the latch 42. One side of the return spring 53 abuts against one end wall of the chute 12, and the other side abuts against one side of the latch 42 facing away from the cam 52. A rotary drive member 51 for driving the cam 52 to rotate is further provided on the carrier table 1.

Referring to fig. 2 and 3, the rotary driving member 51 includes a vibration motor 511, a driving gear 512 coaxially and fixedly connected to an output shaft of the vibration motor 511, a driven gear 513 engaged with the driving gear 512, and a connecting shaft 514 rotatably connected to the plummer 1, wherein the connecting shaft 514 is fixedly connected to the cam 52, the connecting shaft 514 is fixedly connected to the driven gear 513 by a key fit, and the number of teeth and the radius of the driving gear 512 are both greater than those of the driven gear 513. Wherein vibrating motor 511 is fixed to be set up in the lower surface of plummer 1, and connecting axle 514 passes plummer 1 and is connected with plummer 1 rotation, and driving gear 512 and driven gear 513 all set up in the below of plummer 1 to help reducing the mechanism on the plummer 1 upper surface.

The vibration motor 511 drives the cam 52 to rotate through the transmission action of the driving gear 512 and the driven gear 513, and the cam 52 and the return spring 53 work together in the rotating process, so that the sliding member 4 and the rotating disc 2 are driven to do linear reciprocating motion along the sliding chute 12.

Referring to fig. 2 and 3, the rotating mechanism 3 includes a gear ring 31 fixedly disposed at an edge of the rotating disc 2, a fixing frame 32 fixedly connected to the connecting rod 41, a rotating motor 33 fixedly disposed on the fixing frame 32, and a driving gear 34 fixedly disposed on an output shaft of the rotating motor 33, wherein the driving gear 34 is engaged with the gear ring 31, and the gear ring 31 drives the rotating disc 2 to rotate under the driving of the rotating motor 33. The fixing frame 32 includes a connecting rod 321 fixedly connected to the side wall of the connecting rod 41 and a placing table 322 fixedly disposed at an end of the connecting rod 321 far away from the connecting rod 41, and the rotating motor 33 is fixedly disposed on the placing table 322. Two limiting blocks 323 are fixedly arranged on the lower surface of the placing table 322, two guide grooves 14 parallel to the sliding grooves 12 are formed in the bearing table 1, and the limiting blocks 323 are slidably arranged in the guide grooves 14.

Under the guiding action of the guide groove 14, the placing table 322 and the rotating motor 33 on the placing table 322 can reciprocate together with the rotating disc 2 and drive the rotating disc 2 to rotate through the meshing action between the driving gear 34 and the gear ring 31, and the rotating motor 33 and the placing table 322 do not need to rotate synchronously with the rotating disc 2 in the process, so that the load of the rotating motor 33 is reduced, and the service life of the rotating motor 33 is prolonged.

Referring to fig. 2 and 3, two supporting grooves 13 parallel to the sliding grooves 12 are further formed on the upper surface of the plummer 1, and a supporting member 8 is slidably disposed in the supporting groove 13 for supporting the rotating disc 2, wherein the supporting member 8 includes a supporting rod 81, a ball 83 rotatably disposed at an upper end of the supporting rod 81, and a second roller 82 rotatably disposed at a lower end of the supporting rod 81, and the second roller 82 is embedded in the supporting groove 13 and can roll in the supporting groove 13. An annular groove 21 is formed in the lower surface of the rotating disc 2, and the ball 83 is embedded in the annular groove 21.

Referring to fig. 1 and 4, the fixing member 6 includes a supporting frame 61 fixedly disposed on the rotating disc 2, a fixing ring 62 disposed on the supporting frame 61, and a fastening member 63 disposed on the supporting frame 61 for pushing the fixing ring 62 to move downward. The supporting frame 61 is provided with a threaded hole 65, the axis of the threaded hole 65 is collinear with the axis of the rotating disc 2, and the abutting member 63 comprises a screw 631 threaded into the threaded hole 65, a fixing plate 632 rotatably connected to the screw 631, and a handle 633 fixedly connected to one end of the screw 631 for holding and driving the screw 631 to rotate. Three guide rods 64 are further arranged on the support frame 61, the guide rods 64 are slidably arranged through the support frame 61 and are parallel to the screw rods 631, the upper ends of the guide rods 64 are fixedly connected with the fixing plate 632, and the lower ends of the guide rods 64 are fixedly connected with the fixing ring 62.

The screw 631 can be rotated in the threaded hole 65 by rotating the screw 631 through the handle 633, and then the fixing plate 632 and the fixing ring 62 are driven to move up and down, so that the erlenmeyer flask 7 on the rotary disc 2 can be fixed.

Referring to fig. 2 and 4, one surface of the fixing ring 62 facing the center of the circle is inclined downward from one side close to the center of the fixing ring 62 to one side far away from the center of the fixing ring 62, and an elastic cushion 621 is fixedly disposed on one surface of the fixing ring 62 facing the center of the circle. A placing groove 23 is arranged on the rotating disc 2, and a rubber antiskid layer 22 is fixedly arranged on the bottom surface of the placing groove 23.

The implementation principle and the using method of the embodiment are as follows:

by turning the handle 633, the specific position of the retainer ring 62 can be controlled. After the handle 633 is rotated to raise the fixing ring 62, the erlenmeyer flask 7 can be placed on the rubber anti-slip layer 22, and then the handle 633 is rotated to move the fixing ring 62 downwards and tightly abut against the erlenmeyer flask 7 through the elastic cushion 621, so that the erlenmeyer flask 7 can be fixed on the rotating disc 2.

After the fixing process is completed, the rotation motor 33 and the vibration motor 511 are turned on, the vibration motor 511 can drive the cam 52 to rotate through the driving gear 512 and the driven gear 513, and the cam 52 and the return spring 53 can drive the rotating disc 2 to vibrate along the length direction of the sliding chute 12. The rotating motor 33 can drive the rotating disc 2 to rotate through the matching of the driving gear 34 and the gear ring 31, and the vortex generated in the conical flask 7 can be destroyed through the combined action of vibration and rotation, so that the sample in the conical flask 7 is mixed more uniformly.

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 (10)

1. The utility model provides an auxiliary device for determining available calcium magnesium content of lime which characterized in that: including plummer (1) and slip and set up rolling disc (2) on plummer (1), be provided with slewing mechanism (3) that are used for driving rolling disc (2) rotation on rolling disc (2), be provided with reciprocating mechanism (5) that are used for driving rolling disc (2) and do straight reciprocating motion on plummer (1), still be provided with on rolling disc (2) and be used for fixing mounting (6) on rolling disc (2) with erlenmeyer flask (7).

2. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 1, wherein: a sliding groove (12) is formed in the bearing table (1), a sliding piece (4) is arranged on the rotating disc (2), and the sliding piece (4) is arranged in the sliding groove (12) in a sliding mode; the reciprocating mechanism (5) comprises a cam (52) rotationally arranged on the bearing platform (1) and a return spring (53) fixedly arranged on the bearing platform (1), the cam (52) is abutted against the sliding piece (4), the axial lead of the return spring (53) is parallel to the length direction of the sliding chute (12), one end of the return spring (53) is abutted against one end wall of the sliding chute (12), and the other end of the return spring is abutted against one side, back to the cam (52), of the sliding piece (4); the bearing table (1) is also provided with a rotary driving piece (51) for driving the cam (52) to rotate.

3. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 2, wherein: the rotating disc (2) is rotatably connected with the sliding part (4), the rotating mechanism (3) comprises a gear ring (31) fixedly arranged on the periphery of the rotating disc (2), a fixed frame (32) fixedly connected with the sliding part (4), a rotating motor (33) fixedly arranged on the fixed frame (32) and a driving gear (34) fixedly arranged on an output shaft of the rotating motor (33), and the driving gear (34) is meshed with the gear ring (31); the lower surface of the fixing frame (32) is fixedly provided with a limiting block (323), a guide groove (14) is formed in the bearing table (1), the guide groove (14) is parallel to the sliding groove (12), and the limiting block (323) is arranged in the guide groove (14) in a sliding mode.

4. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 3, wherein: slider (4) including rotate connect in the cylindrical connecting rod (41) of the lower surface centre of a circle department of rolling disc (2) and fixed connection in connecting rod (41) keep away from fixture block (42) of rolling disc (2) one end, be provided with first gyro wheel (43) on fixture block (42), first gyro wheel (43) card is located in spout (12), mount (32) including fixed connection in connecting rod (321) of connecting rod (41) and fixed set up in connecting rod (321) keep away from connecting rod (41) one end and be used for placing platform (322) of rotating electrical machine (33), stopper (323) fixed set up in the lower surface of placing platform (322).

5. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 4, wherein: at least two supporting grooves (13) are further formed in one face, facing the rotating disc (2), of the bearing table (1), the length direction of each supporting groove (13) is parallel to the sliding groove (12), a supporting piece (8) is arranged in each supporting groove (13) in a sliding mode, each supporting piece (8) comprises a supporting rod (81) arranged in each supporting groove (13), a ball (83) arranged at the upper end of each supporting rod (81) in a rotating mode, and a second roller (82) arranged at the lower end of each supporting rod (81) in a rotating mode, each second roller (82) is embedded in each supporting groove (13), an annular groove (21) is formed in the lower surface of the rotating disc (2), and each ball (83) is embedded in each annular groove (21).

6. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 2, wherein: rotate driving piece (51) including fixed vibrating motor (511), coaxial fixed connection in vibrating motor (511) output shaft on driving gear (512), driven gear (513) and rotation connection in connecting axle (514) of plummer (1) of meshing in driving gear (512), connecting axle (514) and cam (52) fixed connection, just connecting axle (514) are through key cooperation fixed connection in driven gear (513), the number of teeth and the radius of driving gear (512) all are greater than driven gear (513).

7. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 1, wherein: the fixing piece (6) comprises a support frame (61) fixedly arranged on the rotating disc (2), a fixing ring (62) used for tightly abutting against the conical flask (7) from top to bottom and a fastening piece (63) used for pushing the fixing ring (62) to slide downwards and tightly abutting against the conical flask (7), a guide rod (64) is fixedly arranged on the fixing ring (62), the guide rod (64) penetrates through the support frame (61) and is in sliding connection with the support frame (61), and the length direction of the guide rod (64) is perpendicular to the plane of the bearing platform (1).

8. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 7, wherein: the one side of the fixed ring (62) towards the centre of a circle is from being close to one side downward sloping of the fixed ring (62) centre of a circle to keeping away from one side of the fixed ring (62) centre of a circle, the one side of the fixed ring (62) towards the centre of a circle is fixed and is provided with elastic cushion layer (621).

9. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 7, wherein: be provided with screw hole (65) on support frame (61), the axial lead of screw hole (65) is on a parallel with guide bar (64), it is used for handheld and drive screw (631) pivoted handle (633) to support piece (63) including screw rod (631) of threaded connection in screw hole (65), rotate fixed plate (632) and fixed connection on screw rod (631) one end, the one end fixed connection that solid fixed ring (62) was kept away from in guide bar (64) is towards one side of rolling disc (2) in fixed plate (632).

10. The auxiliary device for measuring the available calcium and magnesium content of lime according to claim 7, wherein: a placing groove (23) is formed in the rotating disc (2), and a rubber anti-skid layer (22) is fixedly arranged on the bottom surface of the placing groove (23).

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