Dual-purpose universal titration rack

Abstract

The invention discloses a dual-purpose universal titration rack, and relates to the technical field of titration racks, the dual-purpose universal titration rack comprises a fixing clamp, one end of the fixing clamp is fixedly connected with a bearing plate, the inner wall of the bearing plate is rotatably connected with an annular rod, and the outer surface of the annular rod is fixedly connected with a movable mechanism; a telescopic arm is fixedly connected to the side, away from the annular rod, of the movable mechanism, an L-shaped rod is fixedly connected to the end, away from the movable mechanism, of the telescopic arm, a fixed pipe clamp is fixedly connected to the side, away from the telescopic arm, of the L-shaped rod, a connecting rod is fixedly connected to the bottom of the bearing plate, and a shaking mechanism is fixedly connected to the bottom end of the connecting rod. The annular rod can drive the fixed pipe clamp to adjust the angle and is matched with the telescopic arm, so that the fixed pipe clamp can flexibly adjust the position of the burette according to own requirements, the burette can be conveniently moved to the position over a container, and a titration experiment is facilitated; and meanwhile, the whole device can be quickly fixed on an object on a production site through the fixing clamp.

Description

Technical Field

[0001] The invention relates to the technical field of titration stands, in particular to a dual-purpose universal titration stand. Background Art

[0002] The laboratory titration stand is a basic device commonly used in experiments and plays an important role. The titration stand is usually used to fix the burette and provide support for the titration operation. Usually the titration stand includes a titration stand base, a column, and a fixed tube clamp. In the traditional way of use, the burette is fixed on the titration stand, and the experimenter holds the burette in one hand and the conical flask in the other hand, shaking it evenly while titrating.

[0003] When the container is large or special, it cannot be quickly placed directly under the burette, and the burette cannot be accurately moved directly above the container, which is not conducive to the titration experiment. In addition, when conducting experiments at the production site, it is also inconvenient to take the entire titration stand to the site. Therefore, the present invention designs a dual-use universal titration stand to solve the above problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a dual-purpose universal titration stand, comprising a fixing clamp, one end of the fixing clamp is fixedly connected to a carrying plate, the inner wall of the carrying plate is rotatably connected to a ring rod, the outer surface of the ring rod is fixedly connected to a movable mechanism, a side of the movable mechanism away from the ring rod is fixedly connected to a telescopic arm, one end of the telescopic arm away from the movable mechanism is fixedly connected to an L-shaped rod, a side of the L-shaped rod away from the telescopic arm is fixedly connected to a fixed pipe clamp, the bottom of the carrying plate is fixedly connected to a connecting rod, and the bottom end of the connecting rod is fixedly connected to a shaking mechanism; the fixing clamp can be clamped on a fixed object at a production site, and the telescopic arm can drive the L-shaped frame and the fixed pipe clamp to telescopically move.

[0005] The movable mechanism includes a ring cylinder, an inner wall of which is provided with a ring groove, an inner surface of the ring cylinder is rotatably connected to a rotating ring, an inner wall of the rotating ring is fixedly connected to a push spring, an end of the push spring away from the rotating ring is fixedly connected to a push plate, a side of the push plate close to the push spring is fixedly connected to a strip plate, and an outer surface of the strip plate is slidably connected to a square tube.

[0006] Furthermore, the inner wall of the square tube is fixedly connected with a support rod, the outer surface of the support rod is rotatably connected with a rotating block, the side of the rotating block away from the strip is fixedly connected with a reset rod, the bottom end of the reset rod is fixedly connected with a vertical plate, the side of the ring tube away from the telescopic arm is fixedly connected with the outer surface of the ring rod, the outer surface of the square tube is fixedly connected with the inner wall of the rotating ring, the side of the strip close to the rotating block is slidably connected with the outer surface of the rotating block, and the top of the vertical plate is fixedly connected with the lower surface of the square tube. The push plate can push the strip to slide along the inner wall of the square tube, and the strip is slidably connected with the outer surface of the rotating block during sliding, and can push the rotating block to rotate.

[0007] Furthermore, the shaking mechanism includes a support shell, the bottom of the inner wall of the support shell is fixedly connected to an inner cylinder, the inner surface of the inner cylinder is fixedly connected to a fixed shaft, the outer surface of the fixed shaft is rotatably connected to a glass rod, both sides of the inner wall of the support shell are fixedly connected to telescopic rods, the end of the telescopic rod away from the support shell is fixedly connected to a clamping box, the inner wall of the clamping box is slidably connected to an adjustment component, and a groove is provided on the side of the clamping box away from the telescopic rod. The telescopic rod can drive the movement of the clamping box, and the inner wall of the support shell is provided with two clamping boxes and a telescopic rod, which can complete the fixation of the conical flask and the cylindrical flask. The pressing plate can be attached to the outer surface of the titration container to assist in fixing the titration container, the U-shaped plate contacts the outer surface of the container, and causes the U-shaped plate to slide along the inner wall of the clamping box, and the container bottle is placed on the upper surface of the glass rod.

[0008] Furthermore, a rubber rod is fixedly connected to the inner wall of the groove, a pressing plate is fixedly connected to the bottom end of the rubber rod, and a rotating shaft is fixedly connected to the inner wall of the pressing plate. The pressing plate can rotate appropriately around the outer surface of the rotating shaft.

[0009] Furthermore, a side of the support shell close to the connecting rod is fixedly connected to the bottom end of the connecting rod, and both ends of the rotating shaft are rotatably connected to the inner wall of the groove.

[0010] Further, the adjustment component includes a U-shaped plate, the inner wall of the U-shaped plate is provided with a slide groove, the outer surface of the U-shaped plate is fixedly connected with a spring belt, the inner wall of the U-shaped plate is slidably connected with a connecting plate, the upper surface of the connecting plate is fixedly connected with a bending rod, the top of the bending rod is fixedly connected with a fitting rod, the side of the fitting rod away from the connecting plate is movably connected with a fixing box, the inner wall of the fixing box is fixedly connected with a tension spring, and the upper surface of the fixing box is fixedly connected with a pressure measuring component. The U-shaped plate can slide along the inner wall of the clamping box, and the slide groove will also limit the outer surface of the connecting plate.

[0011] Furthermore, the U-shaped plate is slidably connected to the inner wall of the clamping box, the slide groove is slidably connected to the outer surface of the connecting plate, the side of the spring belt away from the U-shaped plate is fixedly connected to the inner wall of the clamping box, both ends of the bending rod are rotatably connected to the inner wall of the clamping box, and the end of the tension spring away from the fixed box is fixedly connected to the inner wall of the fitting rod. Both ends of the bending rod are rotatably connected to the inner wall of the clamping box, so the bending rod can also drive the fitting rod to rotate, and when the fitting rod and the bending rod rotate toward one side of the container, the fitting rod will be out of contact with the inner wall of the fixed box.

[0012] Furthermore, the pressure measuring component includes a limit cylinder, the inner wall of the limit cylinder is slidably connected to a pull rope, the end of the pull rope away from the fitting rod is fixedly connected to a slide rod, the side of the slide rod close to the pull rope is fixedly connected to an extrusion spring, and the end of the extrusion spring away from the slide rod is fixedly connected to an annular pressure sensor. During the rotation of the fitting rod, the slide rod can be pulled by the pull rope to move along the inner wall of the cylinder, and the annular pressure sensor is used to measure the extrusion force of the extrusion spring on itself.

[0013] Furthermore, one end of the pull rope away from the sliding rod is fixedly connected to the inner wall of the fitting rod, the outer surface of the sliding rod is slidably connected to the inner wall of the limiting cylinder, and the outer surface of the annular pressure sensor is fixed to the inner wall of the limiting cylinder.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The annular rod can drive the fixed tube clamp to adjust the angle, and cooperate with the telescopic arm so that the fixed tube clamp can flexibly adjust the position of the burette according to its own needs, which is convenient for the burette to move to the top of the container, which is conducive to the titration experiment; at the same time, the fixed clamp can make the whole device quickly fixed on the object at the production site, which is convenient for the operator to quickly place a larger container on the upper surface of the glass rod, reducing the time for placing the container bottle, and also making it easy for the user to adjust a suitable angle for titration without the problem of placement, use and observation troubles caused by poor angles.

[0016] 2. This device can fix and shake the container bottle through the cooperation of the telescopic rod and the clamping box, replacing manual shaking to avoid the problem of hand pain caused by long-term manual shaking of the container. Some containers have inclined surfaces, and the pressure plate can assist in sticking to the outside of containers of different shapes with the support of the rubber rod, increasing the contact area with the container, avoiding the problem that the original fixing device has a small fixed surface area when targeting inclined containers, which may lead to unstable fixation and poor shaking effect.

[0017] 3. When the container bottle is shaken left and right, the device is provided with a plurality of rotating glass rods at the bottom of the container bottle. On the one hand, this provides support for the container bottle to facilitate the sliding of the container bottle. On the other hand, the rotating effect of the glass rods prevents the bottom of the container bottle from being worn due to friction with other objects during the sliding process.

[0018] 4. After the fitting rod is rotated to a certain angle, it can be fitted on the outer surface of a conical container or a cylindrical container. During the rotation of the fitting rod, the annular pressure sensor will also feel the pressure brought by the sliding rod and the extrusion spring. The pressure can be measured by measuring the size of the rotation angle of the fitting rod to adjust the shaking amplitude of the container by the telescopic rod, so as to avoid a large amplitude of shaking of a container with a small gap, causing the titrant to hang on the container wall and affect the accuracy of the titration result; and avoid a small amplitude of shaking of a container with a large gap, causing the titrant inside the container to shake unevenly, resulting in the problem that the titrant inside cannot be effectively fused together.

[0019] 5. After the rotating ring and the ring tube complete the adjustment of the burette position, the strip plate can make the rotating block rotate around the outer surface of the support rod during the withdrawal process, and then contact the inner wall of the ring groove, so that the rotating ring and the burette inside the fixed tube clamp can no longer rotate around the outer surface of the ring tube, thereby preventing the position of the burette and the container below from being offset due to improper operation when the user holds the burette for dripping, resulting in the titration liquid failing to accurately fall into the center of the container, and appearing on the inner wall of the container, further affecting the titration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the movable mechanism of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the ring groove of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the rotating block of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the support shell of the present invention;

[0025] Figure 6 The present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 7 It is a structural schematic diagram of the adjustment component of the present invention;

[0027] Figure 8It is a structural schematic diagram of the pressure measuring component of the present invention.

[0028] In the figure: 1, fixed clamp; 2, bearing plate; 3, annular rod; 4, movable mechanism; 41, annular cylinder; 42, annular groove; 43, rotating ring; 44, pushing spring; 45, push plate; 46, strip plate; 47, square tube; 48, support rod; 49, rotating block; 401, reset rod; 402, vertical plate; 5, telescopic arm; 6, L-shaped rod; 7, fixed pipe clamp; 8, connecting rod; 9, shaking mechanism; 91, supporting shell; 92, inner cylinder; 93, fixed shaft; 94, glass rod; 95, Telescopic rod; 96, clamping box; 97, adjustment component; 971, U-shaped plate; 972, slide groove; 973, spring belt; 974, connecting plate; 975, bending rod; 976, fitting rod; 977, fixing box; 978, tension spring; 979, pressure measuring component; 9791, limiting cylinder; 9792, pull rope; 9793, slide rod; 9794, extrusion spring; 9795, annular pressure sensor; 98, groove; 99, rubber rod; 100, pressure plate; 101, rotating shaft. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0030] For example, see Figure 1-Figure 4 The present invention provides a technical solution: a dual-purpose universal titration stand, comprising a fixing clamp 1, one end of the fixing clamp 1 is fixedly connected to a carrying plate 2, the inner wall of the carrying plate 2 is rotatably connected to a ring rod 3, the outer surface of the ring rod 3 is fixedly connected to a movable mechanism 4, the movable mechanism 4 is fixedly connected to a telescopic arm 5 on a side away from the ring rod 3, the telescopic arm 5 is fixedly connected to an L-shaped rod 6 on one end away from the movable mechanism 4, the L-shaped rod 6 is fixedly connected to a fixed pipe clamp 7 on a side away from the telescopic arm 5, the bottom of the carrying plate 2 is fixedly connected to a connecting rod 8, and the bottom end of the connecting rod 8 is fixedly connected to a shaking mechanism 9; the fixing clamp 1 can be clamped on a fixed object at a production site, and the telescopic arm 5 can drive the L-shaped frame and the fixed pipe clamp 7 to telescopically move;

[0031] The movable mechanism 4 includes a ring tube 41, the inner wall of which is provided with a ring groove 42, the inner surface of the ring tube 41 is rotatably connected to a rotating ring 43, the inner wall of the rotating ring 43 is fixedly connected to a push spring 44, the end of the push spring 44 away from the rotating ring 43 is fixedly connected to a push plate 45, the side of the push plate 45 close to the push spring 44 is fixedly connected to a strip plate 46, and the outer surface of the strip plate 46 is slidably connected to a square tube 47.

[0032] The inner wall of the square tube 47 is fixedly connected with a support rod 48, and the outer surface of the support rod 48 is rotatably connected with a rotating block 49. The side of the rotating block 49 away from the strip plate 46 is fixedly connected with a reset rod 401, and the bottom end of the reset rod 401 is fixedly connected with a vertical plate 402. The side of the ring tube 41 away from the telescopic arm 5 is fixedly connected with the outer surface of the ring rod 3, and the outer surface of the square tube 47 is fixedly connected with the inner wall of the rotating ring 43. The side of the strip plate 46 close to the rotating block 49 is slidably connected with the outer surface of the rotating block 49, and the top of the vertical plate 402 is fixedly connected with the lower surface of the square tube 47. The push plate 45 can push the strip plate 46 to slide along the inner wall of the square tube 47, and the strip plate 46 is slidably connected with the outer surface of the rotating block 49 during the sliding, and can push the rotating block 49 to rotate.

[0033] When in use, in order to facilitate direct testing at the production site, the entire device can be fixed on the production site, such as the outer surface of a relatively stable rod-shaped object, by the fixing clamp 1. The annular rod 3 can drive the movable mechanism 4 and the telescopic arm 5, the L-shaped rod 6, and the fixed tube clamp 7 to rotate up and down, and the rotating ring 43 can rotate left and right around the outer surface of the ring tube 41, thereby realizing the universal movement of the fixed tube clamp 7. The fixed tube clamp 7 can clamp the burette, and cooperate with the extension and contraction of the telescopic arm 5 to move the tube mouth of the burette to the top of the center of the tube mouth of the container bottle. After the container bottle below is fixed by the shaking mechanism 9, the person can hold the burette by hand for titration.

[0034] Before the rotating ring 43 rotates around the ring tube 41, the user needs to hold the push plate 45 and squeeze it toward the side close to the push spring 44. The push plate 45 can drive the strip plate 46 to slide along the inner wall of the square tube 47 toward the inside of the rotating ring 43. During the sliding process of the strip plate 46, the side of the strip plate 46 away from the push plate 45 will slide with the side of the rotating block 49 away from the reset rod 401. Since the strip plate 46 slides toward the side close to the rotating block 49, the contact part between the strip plate 46 and the rotating block 49 is away from the support. The support rod 48 is getting closer and closer, so the rotating block 49 is squeezed by the strip plate 46 and rotates along the outer surface of the support rod 48, and rotates toward the side close to the reset rod 401, squeezing the reset rod 401, and the rotating block 49 gradually moves closer to the vertical plate 402. The side of the rotating block 49 close to the strip plate 46 will be out of contact with the annular groove 42. At this time, the entire rotating ring 43, the telescopic arm 5, and the fixed pipe clamp 7 can rotate along the outer surface of the ring tube 41, and the fixed pipe clamp 7 and the container bottle are adjusted to rotate to a suitable angle.

[0035] When the rotating ring 43 drives the fixed tube clamp 7 to move around the ring tube 41 to a suitable angle and no longer moves, the user no longer squeezes the push plate 45, and the push plate 45 moves and resets to the side away from the square tube 47 under the elasticity of the push spring 44, and at the same time, it can drive the strip plate 46 to move to the side away from the rotating block 49, and the contact part between the outer surface of the strip plate 46 and the rotating block 49 is farther and farther away from the support rod 48, and the rotating block 49 rotates around the support rod 48 under the elasticity of the reset rod 401 until the rotating block 49 contacts the surface of the annular groove 42 on the side close to the strip plate 46, that is, the upper and lower rotating blocks 49 press the annular groove 42, resulting in the entire rotating ring 43 being unable to rotate and adjust due to the cooperation of the rotating block 49 and the annular groove 42, thereby achieving locking, thereby avoiding the problem that the fixed tube clamp 7 is fixed to the burette, and the burette is shifted due to the touch of the burette by the hand, which further causes the burette to touch the inner wall of the container bottle.

[0036] For example 2, please refer to Figure 1-Figure 8The present invention provides a technical solution: on the basis of the first embodiment, the shaking mechanism 9 comprises a support shell 91, the bottom of the inner wall of the support shell 91 is fixedly connected with an inner cylinder 92, the inner surface of the inner cylinder 92 is fixedly connected with a fixed shaft 93, the outer surface of the fixed shaft 93 is rotatably connected with a glass rod 94, and both sides of the inner wall of the support shell 91 are fixedly connected with telescopic rods 95, the end of the telescopic rod 95 away from the support shell 91 is fixedly connected with a clamping box 96, the inner wall of the clamping box 96 is slidably connected with an adjustment component 97, and a groove 98 is provided on the side of the clamping box 96 away from the telescopic rod 95. The telescopic rod 95 can drive the movement of the clamping box 96, and the inner wall of the support shell 91 is provided with two clamping boxes 96 and a telescopic rod 95, which can complete the fixation of the conical flask and the cylindrical flask. The pressing plate 100 can be attached to the outer surface of the titration container to assist in fixing the titration container, and the U-shaped plate 971 contacts the outer surface of the container and makes the U-shaped plate 971 slide along the inner wall of the clamping box 96, and the container bottle is placed on the upper surface of the glass rod 94. The pressing plate 100 is made of rubber.

[0037] The inner wall of the groove 98 is fixedly connected with a rubber rod 99, the bottom end of the rubber rod 99 is fixedly connected with a pressing plate 100, and the inner wall of the pressing plate 100 is fixedly connected with a rotating shaft 101. The pressing plate 100 can rotate around the outer surface of the rotating shaft 101 appropriately.

[0038] The adjustment component 97 includes a U-shaped plate 971, the inner wall of which is provided with a slide groove 972, the outer surface of which is fixedly connected with a spring belt 973, the inner wall of which is slidably connected with a connecting plate 974, the upper surface of which is fixedly connected with a bending rod 975, the top of which is fixedly connected with a fitting rod 976, the side of which is away from the connecting plate 974 and is movably connected with a fixing box 977, the inner wall of which is fixedly connected with a tension spring 978, and the upper surface of which is fixedly connected with a pressure measuring component 979. The U-shaped plate 971 can slide along the inner wall of the clamping box 96, and the slide groove 972 will also limit the outer surface of the connecting plate 974.

[0039] The U-shaped plate 971 is slidably connected to the inner wall of the clamping box 96, the slide groove 972 is slidably connected to the outer surface of the connecting plate 974, the side of the spring belt 973 away from the U-shaped plate 971 is fixedly connected to the inner wall of the clamping box 96, both ends of the bending rod 975 are rotatably connected to the inner wall of the clamping box 96, and one end of the tension spring 978 away from the fixed box 977 is fixedly connected to the inner wall of the fitting rod 976. Both ends of the bending rod 975 are rotatably connected to the inner wall of the clamping box 96, so the bending rod 975 can also drive the fitting rod 976 to rotate, and when the fitting rod 976 and the bending rod 975 rotate toward one side of the container, the fitting rod 976 will be out of contact with the inner wall of the fixed box 977.

[0040] When in use, place the titration container that needs to carry the solution on the upper surface of the bottom of the inner wall of the support shell 91, that is, on the upper surface of the glass rod 94, and adjust the position of the container appropriately so that the center of the container and the center of the two clamping boxes 96 are located at the same position. When the position of the container is adjusted, start the telescopic rod 95. The extension of the telescopic rod 95 can drive the movement of the clamping box 96, so that the clamping boxes 96 on both sides can preliminarily fix the left and right sides of the container in the process of approaching each other.

[0041] During the process of the two clamping boxes 96 preliminarily fixing the left and right sides of the container, the left and right sides of the container can also squeeze the pressing plate 100. When the container is in the shape of a cylindrical flask, both sides of the cylindrical flask are vertical surfaces, and the outer surface of the container can push the pressing plate 100 to rotate along the outer surface of the fixing rod. The pressing plate 100 squeezes the rubber rod 99 during the rotation until the pressing plate 100 is wound around the inner wall of the groove 98. When the container is in the shape of a conical flask, and the top opening of the conical flask does not exist and cannot be fixed, the inclined surfaces on both sides of the conical flask will be fixed, and the contact area between the clamping box 96 and the conical flask is small, so the pressing plate 100 is set, and the conical flask will also squeeze the pressing plate 100, but a part of the pressing plate 100 will fit on the outer surface of the conical flask under the elasticity of the rubber rod 99, so as to achieve auxiliary fixation of the inclined surface of the conical flask. That is, the rotation and fitting effect of the pressing plate 100 can achieve the clamping of the container according to the different shapes of the container. This avoids the problem that when the clamping box 96 clamps the container, when the surface of the container is an inclined surface, the clamping area is small and the clamping effect is not ideal.

[0042] With the auxiliary fixation of the clamping box 96 and the pressing plate 100, the two telescopic rods 95 can be extended and retracted, and the back and forth movement of the container bottle can be controlled by the clamping box 96, replacing manual shaking of the container bottle left and right.

[0043] When the container is shaken, the bottom of the container bottle is in contact with the glass rod 94. Therefore, when the container moves left and right, it slides left and right along the surface of the glass rod 94 and drives the glass rod 94 to rotate around the outer surface of the fixed axis 93. On the one hand, the glass rod 94 provides a supporting effect for the bottom of the container bottle. On the other hand, the rotation of the glass rod 94 facilitates the sliding of the bottom of the container bottle without causing wear on the bottom of the container bottle due to left and right movement due to friction.

[0044] When the clamping box 96 clamps the container, the U-shaped plate 971 contacts the two sides of the container in the same direction and pushes the U-shaped plate 971 to slide along the inner wall of the clamping box 96, and the U-shaped plate 971 stretches the spring belt 973 during the sliding process. The inner wall of the U-shaped plate 971 is provided with a slide groove 972. When the U-shaped plate 971 moves away from the spring belt 973, the contact area between the slide groove 972 and the bending rod 975 will gradually decrease. At this time, the fitting rod 976 is pushed by the tension spring 978 inside the fixing box 977, which drives the bending rod 975 to rotate appropriately around the inner wall of the clamping box 96. The fitting rod 976 rotates on the side away from the pull rope 9792.

[0045] The pressure measuring component 979 includes a limit cylinder 9791, the inner wall of which is slidably connected to a pull rope 9792, the end of which away from the fitting rod 976 is fixedly connected to a slide rod 9793, the side of which close to the pull rope 9792 is fixedly connected to an extrusion spring 9794, and the end of which away from the slide rod 9793 is fixedly connected to an annular pressure sensor 9795. The fitting rod 976 can be moved along the inner wall of the cylinder by pulling the slide rod 9793 with the pull rope 9792 during rotation, and the annular pressure sensor 9795 is used to measure the extrusion force of the extrusion spring 9794 on itself.

[0046] One end of the pull rope 9792 away from the sliding rod 9793 is fixedly connected to the inner wall of the fitting rod 976, the outer surface of the sliding rod 9793 is slidably connected to the inner wall of the limiting cylinder 9791, and the outer surface of the annular pressure sensor 9795 is fixed to the inner wall of the limiting cylinder 9791.

[0047] When in use, during the rotation of the fitting rod 976, if the container is a cylindrical flask, the fitting rod 976 will only rotate a small angle under the push of the tension spring 978 to contact the outer surface of the container. At the same time, the fitting rod 976 will pull the pull rope 9792 to slide along the inside of the limiting cylinder 9791 during the rotation. The pull rope 9792 will also drive the sliding rod 9793 to slide during the sliding process. The sliding rod 9793 will slide toward the side close to the annular pressure sensor 9795 and squeeze the extrusion spring 9794. The extrusion force will be transmitted to the annular pressure sensor 9795, and the size of the fixed container opening can be judged by detecting the pressure through the annular pressure sensor 9795. Since both sides of the cylindrical flask are vertical surfaces and the rotation angle of the fitting rod 976 is very small, the pressure felt by the annular pressure sensor 9795 is very small, indicating that the opening of the container bottle to be titrated is very large. Therefore, the annular pressure sensor 9795 senses the pressure and transmits the signal to the external controller to control the extension and retraction amplitude of the two telescopic rods 95, that is, the cylindrical flask can be shaken back and forth to a relatively large extent, so that the titration liquid inside the container bottle is shaken evenly.

[0048] If the container is a conical flask, the fitting rod 976 will rotate at a larger angle under the push of the tension spring 978 and contact the outer surface of the container. Similarly, the fitting rod 976 pulls the pull rope 9792 and the slide rod 9793 to move. At this time, the slide rod 9793 will squeeze the extrusion spring 9794 to a greater extent, and the annular pressure sensor 9795 will detect a larger pressure and transmit a signal to the outside world, judging that the opening of this container bottle is small, and further controlling the extension and retraction amplitude of the two telescopic rods 95. Therefore, the conical flask can be shaken back and forth with a relatively small amplitude to avoid the contact between the mouth of the conical flask and the outer surface of the burette, causing the titrant to hang on the inner wall of the container bottle.

[0049] When the titration is completed and the container bottle is taken away, the U-shaped plate 971 is no longer subjected to the pressure of the container bottle and will reset under the elasticity of the spring belt 973. At the same time, when the U-shaped plate 971 is reset and slides along the inner wall of the clamping box 96, the slide groove 972 opened on the inner wall of the U-shaped plate 971 can drive the connecting plate 974 and the bending rod 975 to reset and rotate, and the bending rod 975 will drive the fitting rod 976 to rotate and reset and lean against the inner wall of the fixed box 977 again. The fitting rod 976 is made of rubber.

[0050] The specific working process is as follows:

[0051] First, the entire device is fixed to an object at the production site by means of the fixing clamp 1 so that the entire device remains stable. Then, the rotating ring 43 is rotated around the outer surface of the ring tube 41. At the same time, the telescopic distance of the fixed tube clamp 7 is adjusted according to the telescopic arm 5, so that the upper fixed tube clamp 7 and the center of the lower support shell 91 are kept in a vertical line. The burette is fixed by means of the fixing tube clamp 7, and the container that needs to carry the titrant is placed at the center of the bottom of the inner wall of the support shell 91, so as to facilitate the subsequent titration of the burette.

[0052] When the burette and the container are moved to the appropriate position, the rotating ring 43 and the ring tube 41 are locked, so that the rotating ring 43 cannot rotate, thereby preventing the subsequent user from holding the burette and causing the burette to shift in position. The container is initially fixed by the cooperation of the telescopic rod 95 and the clamping box 96, and then the container is fixed by the rotation of the pressing plate 100. The telescopic effect of the two telescopic rods 95 can achieve shaking of the container.

[0053] By cooperating with the U-shaped plate 971 and the adjustment component 97, the fitting rod 976 is fitted to the outer surface of the container to control the shaking amplitude of the container by the telescopic rod 95, so as to make appropriate adjustments according to the size ratio of different openings.

[0054] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A dual-purpose universal titration stand, comprising a fixing clamp (1), characterized in that: One end of the fixing clamp (1) is fixedly connected to a bearing plate (2), the inner wall of the bearing plate (2) is rotatably connected to an annular rod (3), the outer surface of the annular rod (3) is fixedly connected to a movable mechanism (4), the side of the movable mechanism (4) away from the annular rod (3) is fixedly connected to a telescopic arm (5), the end of the telescopic arm (5) away from the movable mechanism (4) is fixedly connected to an L-shaped rod (6), the side of the L-shaped rod (6) away from the telescopic arm (5) is fixedly connected to a fixed pipe clamp (7), the bottom of the bearing plate (2) is fixedly connected to a connecting rod (8), and the bottom end of the connecting rod (8) is fixedly connected to a shaking mechanism (9); The movable mechanism (4) comprises a ring tube (41), the inner wall of which is provided with a ring groove (42), the inner surface of which is rotatably connected to a rotating ring (43), the inner wall of which is fixedly connected to a pushing spring (44), the end of which away from the rotating ring (43) is fixedly connected to a pushing plate (45), the side of which close to the pushing spring (44) is fixedly connected to a strip plate (46), and the outer surface of which is slidably connected to a square tube (47).

2. A dual-purpose universal titration stand according to claim 1, characterized in that: The inner wall of the square tube (47) is fixedly connected to a support rod (48), the outer surface of the support rod (48) is rotatably connected to a rotating block (49), the side of the rotating block (49) away from the strip plate (46) is fixedly connected to a reset rod (401), the bottom end of the reset rod (401) is fixedly connected to a vertical plate (402), the side of the ring tube (41) away from the telescopic arm (5) is fixedly connected to the outer surface of the annular rod (3), the outer surface of the square tube (47) is fixedly connected to the inner wall of the rotating ring (43), the side of the strip plate (46) close to the rotating block (49) is slidably connected to the outer surface of the rotating block (49), and the top of the vertical plate (402) is fixedly connected to the lower surface of the square tube (47).

3. The dual-purpose universal titration stand according to claim 1, characterized in that: The shaking mechanism (9) comprises a supporting shell (91), the bottom of the inner wall of the supporting shell (91) is fixedly connected to an inner tube (92), the inner surface of the inner tube (92) is fixedly connected to a fixed shaft (93), the outer surface of the fixed shaft (93) is rotatably connected to a glass rod (94), both sides of the inner wall of the supporting shell (91) are fixedly connected to telescopic rods (95), one end of the telescopic rod (95) away from the supporting shell (91) is fixedly connected to a clamping box (96), the inner wall of the clamping box (96) is slidably connected to an adjustment component (97), and a groove (98) is provided on the side of the clamping box (96) away from the telescopic rod (95).

4. A dual-purpose universal titration stand according to claim 3, characterized in that: A rubber rod (99) is fixedly connected to the inner wall of the groove (98), a pressing plate (100) is fixedly connected to the bottom end of the rubber rod (99), and a rotating shaft (101) is fixedly connected to the inner wall of the pressing plate (100).

5. The dual-purpose universal titration stand according to claim 4, characterized in that: The side of the support shell (91) close to the connecting rod (8) is fixedly connected to the bottom end of the connecting rod (8), and both ends of the rotating shaft (101) are rotatably connected to the inner wall of the groove (98).

6. The dual-purpose universal titration stand according to claim 3, characterized in that: The adjustment component (97) comprises a U-shaped plate (971), the inner wall of the U-shaped plate (971) is provided with a sliding groove (972), the outer surface of the U-shaped plate (971) is fixedly connected with a spring belt (973), the inner wall of the U-shaped plate (971) is slidably connected with a connecting plate (974), the upper surface of the connecting plate (974) is fixedly connected with a bending rod (975), the top of the bending rod (975) is fixedly connected with a fitting rod (976), the fitting rod (976) is movably connected with a fixed box (977) on a side away from the connecting plate (974), the inner wall of the fixed box (977) is fixedly connected with a tension spring (978), and the upper surface of the fixed box (977) is fixedly connected with a pressure measuring component (979).

7. The dual-purpose universal titration stand according to claim 6, characterized in that: The U-shaped plate (971) is slidably connected to the inner wall of the clamping box (96), the slide groove (972) is slidably connected to the outer surface of the connecting plate (974), the side of the spring belt (973) away from the U-shaped plate (971) is fixedly connected to the inner wall of the clamping box (96), both ends of the bending rod (975) are rotatably connected to the inner wall of the clamping box (96), and the end of the tension spring (978) away from the fixed box (977) is fixedly connected to the inner wall of the fitting rod (976).

8. The dual-purpose universal titration stand according to claim 7, characterized in that: The pressure measuring component (979) includes a limiting cylinder (9791), the inner wall of which is slidably connected to a pull rope (9792), the end of the pull rope (9792) away from the fitting rod (976) is fixedly connected to a slide rod (9793), the side of the slide rod (9793) close to the pull rope (9792) is fixedly connected to an extrusion spring (9794), and the end of the extrusion spring (9794) away from the slide rod (9793) is fixedly connected to an annular pressure sensor (9795).

9. The dual-purpose universal titration stand according to claim 8, characterized in that: One end of the pull rope (9792) away from the slide rod (9793) is fixedly connected to the inner wall of the fitting rod (976), the outer surface of the slide rod (9793) is slidably connected to the inner wall of the limiting cylinder (9791), and the outer surface of the annular pressure sensor (9795) is fixed to the inner wall of the limiting cylinder (9791).

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