Titration head for universal adjustable titration instruments

Abstract

The present invention discloses a titration head of a universal adjustable titration instrument, which belongs to the field of titration analysis technology, and includes a pressing device, a titration device, a driving device and a fixing plate. The mounting device moves above the fixing plate through the driving device, and the pressing device includes a pressing plate 1, a fixing hole is provided on one side of the pressing plate 1, a placement groove designed along the length of the pressing plate 1 is provided on the pressing plate 1, and fixed grooves designed in parallel are provided on both sides of the placement groove. The titration device in this embodiment can change the number of titration devices by changing the number of titration devices placed in the placement groove, so as to increase or decrease the number of simultaneous titrations, and realize titration of different groups.

Description

Technical Field

[0001] The invention relates to the technical field of titration analysis, in particular to a titration head of a universal adjustable titration instrument. Background Art

[0002] Titration analysis is an analytical method that adds a standard solution of known accurate concentration to the solution of the substance to be tested until the amount of the added solution substance reacts completely according to the stoichiometric relationship, and then calculates the content of the substance to be tested based on the concentration of the added standard solution and the volume consumed. In the process of modern drug analysis, it is often necessary to perform titration analysis on the components of the drug, so an analytical titration device for drug testing is often used.

[0003] The number of titration groups and the size of the titration heads of existing instruments are fixed and cannot be adjusted. That is to say, if a different number of groups is required, it can be reduced on the existing basis if it is small. However, if the required number of groups is greater than the specified number of titration heads of the current equipment, it will not be possible and can only be carried out in groups, which reduces work efficiency. Summary of the invention

[0004] The object of the present invention is to provide a titration head of a universal adjustable titration instrument, wherein the titration analysis device can increase or decrease the number of titration groups to achieve the effect of convenient titration analysis, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The titration head of a universal adjustable titration instrument comprises a pressing device, a titration device, a driving device and a fixing plate. The mounting device moves above the fixing plate through the driving device. The pressing device comprises a pressing plate 1, a fixing hole is provided on one side of the pressing plate 1, a placement groove designed along the length of the pressing plate 1 is provided on the pressing plate 1, and fixing grooves designed in parallel are provided on both sides of the placement groove.

[0007] As a further solution of the present invention: wherein, the titration device includes a detachable clamping device, a titration head body is installed on the top of the clamping device, the titration device includes a fixing member arranged below the clamping device, and the clamping device includes two clamped semicircular plates, and the semicircular plates are abutted against the titration head body.

[0008] As a further solution of the present invention, a titration device is externally connected to the pressing plate, the fixing member is in contact with the fixing groove and the placement groove, and the titration head body includes a fixed solution tube, and a dropper is threadedly connected to the lower part of the fixed solution tube.

[0009] As a further solution of the present invention: wherein, two grooves corresponding to the fixing solution tubes are provided inside the fixing member.

[0010] As a further solution of the present invention: wherein, the driving device is arranged on one side of the fixed plate, the driving device includes a motor body fixedly connected to the fixed plate, the output end of the motor body is fixedly connected to a threaded rod, and a threaded block is threadedly connected to the threaded rod, and a sliding groove for limiting the threaded block is opened on the fixed plate, the sliding groove abuts against the threaded block, and a connecting rod is fixedly installed above the threaded block.

[0011] As a further solution of the present invention: wherein, the connecting rod is threadedly connected to the pressing plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The titration device in this embodiment can change the number of titration devices by changing the number of titration devices placed in the placement tank, so that the number of simultaneous titrations can be increased or decreased, and titration of different groups can be achieved.

[0014] 2. When the titration head body of the titration device in this embodiment needs to be replaced with a titration head body of another size, it is only necessary to remove the clamping device (ie, remove the two semicircular plates to separate them), so as to achieve the effect of convenient replacement of the titration head body.

[0015] 3. The titration device in this embodiment has a 5M threaded groove inside, and a 5M joint is fixedly installed on the top of the dropper. Through the threaded connection between the joint and the threaded groove, the dropper can be threadedly installed on the fixed solution tube, thereby facilitating the replacement of the dropper.

[0016] 4. The titration device in this embodiment drives the pressing plate 1 to move up and down by the motor body to approach the liquid dropper, thereby replacing manual operation and achieving a more convenient titration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the titration device in the present invention;

[0018] Figure 2 A top view of a structure of a pressing plate in the present invention;

[0019] Figure 3 It is a three-dimensional schematic diagram of the titration device structure in the present invention;

[0020] Figure 4 It is a cross-sectional view of the structure of the fixed solution tube in the present invention;

[0021] Figure 5 A top view of the dropper structure of the present invention;

[0022] Figure 6 It is a three-dimensional schematic diagram of the structure of the driving device in the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the second pressing plate in the present invention;

[0024] Figure 8 It is a schematic diagram of the three structures of the pressing plate in the present invention;

[0025] Fig. 9 It is a schematic diagram of the fourth structure of the pressing plate in the present invention;

[0026] Fig.10 It is a schematic diagram of the fixed plate structure in the present invention.

[0027] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0028] 1. Pressing device; 1.1. Pressing plate 1; 1.2. Fixing hole; 1.3. Fixing groove; 1.4. Placement groove; 1.5. Pressing plate 2; 1.6. Pressing plate 3; 1.7. Pressing plate 4; 2. Titration device; 2.1. Titration head body; 2.1.1. Fixing solution tube; 2.1.2. Dropper; 2.2. Clamping device; 2.3. Fixing part; 3. Driving device; 3.1. Connecting rod; 3.2. Sliding groove; 3.3. Motor body; 4. Fixing plate. DETAILED DESCRIPTION

[0029] See also Figure 1 to Figure 2 , which is a schematic diagram of the three-dimensional structure of the titration device in this embodiment. The titration device adopts the method of pressing and injecting a dropper in the prior art to achieve the titration of the solution. On the basis of the prior art, the device also includes a pressing device 1, and the pressing device includes a pressing plate 1.1, a fixing hole 1.2 is opened on one side of the pressing plate 1.1, a placement groove 1.4 designed along the length of the pressing plate 1.1 is opened on the pressing plate 1.1, and parallel fixing grooves 1.3 are opened on both sides of the placement groove 1.4.

[0030] like Figures 3 to 5 As shown, the titration device 2 includes a detachable clamping device 2.2, and a titration head body 2.1 is installed on the top of the clamping device 2.2. There are two titration head bodies 2.1, which are symmetrically distributed on the top of the clamping device 2.2, and the titration device 2 also includes a fixing member 2.3. The clamping device 2.2 is attached to the fixing member 2.3. The clamping device 2.3 is divided into two semicircular plates. When the cover is closed, the two semicircular plates can be merged, and then the titration head body 2.1 can be fixed by a snap-fitting manner and fixedly installed on the fixing member 2.3. When the titration head body 2.1 of other sizes needs to be replaced, it is only necessary to remove the clamping device 2.2 (that is, remove the two semicircular plates and separate them), so as to achieve the effect of convenient replacement of the titration head body 2.1.

[0031] The pressing plate 1.1 is externally connected with a titration device 2, and a titration head body 2.1 is placed on the fixing groove 1.3 and the placement groove 1.4. The titration head body 2.1 includes a fixed solution tube 2.1.1, and a dropper 2.1.2 is threadedly connected to the lower part of the fixed solution tube 2.1.1. In this embodiment, the fixed solution tube 2.1.1 is fixedly connected to the fixing member 2.3, and the fixed solution tube 2.1.1 is fixedly installed inside the fixing member 2.3. Two grooves are provided inside the fixing member 2.3, and the size of the grooves is the same as that of the fixed solution tube 2. .1.1, the size of the fixed solution tube 2.1.1 can be placed in the groove, the two overlap, and the titration head body 2.1.1 can be fixed. The dropper 2.1.2 and the titration head body 2.1 are connected. An M5 threaded groove is arranged inside the titration device 2.1, and an M5 joint is fixedly installed on the top of the dropper 2.1.2. The dropper 2.1.2 can be threadedly installed on the fixed solution tube 2.1.1 through the threaded connection between the joint and the threaded groove, so that the dropper 2.1.2 can be conveniently replaced.

[0032] like Figure 6 As shown, a fixing plate 4 is provided at the lower end of the pressing device 1, and a driving device 3 is provided on one side of the fixing plate 4. The driving device 3 includes a motor body 3.3 fixedly connected to the fixing plate 4, and a threaded rod is fixedly connected to the output end of the motor body 3.3, and a threaded block is threadedly connected to the threaded rod. A sliding groove 3.2 for limiting the threaded block is provided on the fixing plate 4, and a connecting rod 3.1 is fixedly installed above the threaded block. In this embodiment, the motor body 3.3 is rotated on one side of the fixing plate 4 to drive the threaded rod to rotate, and the threaded rod drives the threaded block to slide inside the sliding groove 3.2. The sliding groove 3.2 abuts against the threaded block, and the threaded block moves and can drive the connecting rod 3.1 to move, and the connecting rod 3.1 drives the pressing plate 1.1 to move. The forward rotation of the motor body 3.3 can drive the pressing device 1 to move downward, and then the titration device 2 on the pressing device 1 is pressed tightly in the tube of the titration liquid through the pressing plate 1.1, and a sealing effect is achieved.

[0033] like Figures 7 to 9 As shown, in summary, if the number of titration head bodies 2.1 does not exceed 5, the number can be increased or decreased directly on the pressing plate 2 1.5 and the pressing plate 3 1.6. The pressing plate 2 1.5 is a schematic diagram when 4 titration head bodies 2.1 are used, and the pressing plate 3 1.6 is a schematic diagram when 5 titration head bodies 1.2 are used.

[0034] If the number of the titration head bodies 2.1 is greater than 5, the pressing plate 4 1.7 needs to be replaced. The pressing plate 4 1.7 is longer and can hold more titration head bodies 1.2.

[0035] like Fig.10As shown, the fixing plate 4 is provided with a plurality of threaded holes for fixing the motor, and a heat dissipation groove is also provided therein for dissipating the heat of the motor body 3.3.

[0036] Working principle: When in use, the motor body 3.3 can be controlled to work, driving the threaded rod to rotate, and the threaded rod drives the threaded block to slide inside the sliding groove 3.2, thereby cooperating with the action of the connecting rod 3.1, and the pressing plate 1.1 can be driven to move, and the pressing plate 1.1 moves downward, close to the burette, and the burette 2.1.2 is inserted into the burette, and then the pressing plate 1.1 is pressed on the burette of the titration liquid to achieve compression and achieve the effect of titration;

[0037] If the titration head body 2.1 needs to be replaced, the two semicircular plates in the clamping device 2.2 can be opened, the two semicircular plates can be separated from each other, and the titration head body 2.1 can be taken out from the fixing member 2.3 to achieve replacement of the titration head body 2.1;

[0038] If the number of titration head bodies 2.1 needs to be increased or decreased, the number of titration head bodies 2.1 placed on the fixing holes 1.2 and the fixing grooves 1.3 can be changed. If the number of titration head bodies 2.1 required is greater than 5, the longer pressing plate 4 1.7 can be replaced to achieve the effect of completing multiple titration analysis experiments simultaneously.

[0039] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A titration head of a universal adjustable titration instrument, comprising a pressing device (1), a titration device (2), a driving device (3) and a fixing plate (4), wherein the pressing device (1) moves above the fixing plate (4) through the driving device (3), and is characterized in that: The pressing device comprises a pressing plate 1 (1.1), a fixing hole (1.2) is provided on one side of the pressing plate 1 (1.1), a placement groove (1.4) designed along the length of the pressing plate 1 (1.1) is provided on the pressing plate 1 (1.1), and fixing grooves (1.3) designed in parallel are provided on both sides of the placement groove (1.4); The titration device (2) comprises a detachable clamping device (2.2), a titration head body (2.1) is mounted on the top of the clamping device (2.2), the titration device (2) comprises a fixing member (2.3) arranged below the clamping device (2.2), the clamping device (2.2) comprises two clamped semicircular plates, and the semicircular plates are in abutment with the titration head body (2.1); The drive device (3) is arranged on one side of the fixed plate (4), and comprises a motor body (3.3) fixedly connected to the fixed plate (4); a threaded rod is fixedly connected to the output end of the motor body (3.3); a threaded block is threadedly connected to the threaded rod; a sliding groove (3.2) for limiting the threaded block is provided on the fixed plate (4); the sliding groove (3.2) abuts against the threaded block; and a connecting rod (3.1) is fixedly installed above the threaded block.

2. The titration head of the universal adjustable titration instrument according to claim 1, characterized in that: The pressing plate 1 (1.1) is externally connected to a titration device (2); the fixing member (2.3) is in contact with the fixing groove (1.3) and the placement groove (1.4); the titration head body (2.1) comprises a fixed solution tube (2.1.1); and a dropper (2.1.2) is threadedly connected below the fixed solution tube (2.1.1).

3. The titration head of the universal adjustable titration instrument according to claim 2, characterized in that: Two grooves corresponding to the fixing solution tube (2.1.1) are provided inside the fixing piece (2.3).

4. The titration head of the universal adjustable titration instrument according to claim 3, characterized in that: The connecting rod (3.1) is threadedly connected to the pressing plate 1 (1.1).

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