Device for adjusting pH (Potential of Hydrogen) reaction of solution

Abstract

The utility model relates to a reaction device for adjusting the pH value of a solution. The reaction device comprises a tank body and a cover body, a motor is arranged at the top of the cover body, a rotating shaft of the motor penetrates through the cover body and is connected with a stirring rod, a first channel penetrates through the stirring blades, a second channel penetrating downwards is formed in the connecting rod, and the second channel communicates with the first channel through a communicating hole in the peripheral wall of the connecting rod; the bottom of the stirring rod is detachably connected with the rotating joint, the second channel is communicated with the rotating end of the rotating joint, the fixed end of the rotating joint is connected with a PH adjusting liquid container through a pipeline, a water pump is arranged in the middle of the pipeline, and a PH value sensor is arranged in the tank body. The PH value adjusting liquid is injected into the stirring rod through the water pump, the stirring rod stirs and injects the PH value adjusting liquid at the same time, stirring is more uniform, mixing is faster, and protein denaturation and precipitation caused by too high local concentration are avoided; and when the preset PH value is reached, the water pump and the motor only need to stop working.

Description

Technical Field

[0001] This utility model relates to the field of protein solution pH adjustment technology, specifically to a device for adjusting the pH of a solution. Background Technology

[0002] pH adjustment of large-volume protein solutions is a crucial step, directly affecting protein stability and activity, and consequently influencing the quality and performance of the final product. However, traditional pH adjustment methods have many shortcomings in practice.

[0003] Specifically, when dealing with large-volume protein solutions, directly adding acid or alkali solutions to adjust the pH can easily lead to protein denaturation and precipitation due to the rapid changes in local concentration during the dropwise addition. This phenomenon of excessively high local concentration occurs because the acid or alkali solution fails to disperse rapidly and evenly when added to a large volume of protein solution, creating a high-concentration acid-base environment in the addition area, which damages the protein structure. Protein denaturation and precipitation not only reduce product purity but may also affect protein bioactivity. Furthermore, since large-volume protein solutions require relatively large amounts of acid or alkali, using a slow dropwise addition method to avoid excessively high local concentrations would significantly prolong the production cycle and reduce production efficiency. Utility Model Content

[0004] The technical problem to be solved by this invention is to provide a device for adjusting the pH of a solution, so as to overcome the shortcomings of the prior art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A device for adjusting the pH reaction of a solution includes a tank and a cover; a motor is provided on the top of the cover, the motor shaft passes through the cover and is connected to a stirring rod, the stirring rod includes a stirring blade and a connecting rod, the stirring blade is connected to the middle of the connecting rod, a first channel is provided through the stirring blade, a second channel is provided through the connecting rod, and the second channel is connected to the first channel through a connecting hole in the peripheral wall of the connecting rod;

[0006] It also includes a rotary joint, with a mounting hole at the bottom of the tank. The fixed end of the rotary joint is sealed and fixedly installed in the mounting hole. The bottom of the stirring rod is detachably connected to the rotary joint. The second channel is connected to the rotating end of the rotary joint. The fixed end of the rotary joint is connected to a pH adjustment liquid container through a pipe. A water pump is installed in the middle of the pipe. A pH sensor is installed inside the tank. The motor, water pump, and pH sensor are all electrically connected to the controller.

[0007] The beneficial effects of this invention are: the pH adjustment solution is injected into the stirring rod by a water pump, and the pH adjustment solution is injected while the stirring rod is stirring, resulting in more uniform stirring and faster mixing, avoiding excessive local concentration that could lead to protein denaturation and precipitation; when the preset pH value is reached, it is only necessary to stop the water pump and motor.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, a conical joint is provided at the bottom of the connecting rod, and a conical groove adapted to the conical joint is provided on the upper end face of the rotary joint, and a rubber sealing ring is provided on the bottom wall of the conical groove; two limiting blocks are symmetrically arranged on the side wall of the conical joint, and a limiting groove adapted to the limiting blocks is opened on the upper end face of the conical groove.

[0010] Furthermore, the stirring blades have an upwardly curved arc structure.

[0011] Furthermore, a reset spring is fixedly connected to the top of the second channel, and a sealing block is fixedly connected to the bottom of the reset spring. When there is no water pressure, the sealing block is located at the connecting hole.

[0012] Furthermore, a display screen and control buttons are provided on the top of the cover, and both the display screen and control buttons are electrically connected to the controller.

[0013] Furthermore, a storage battery is installed inside the cover, and a charging interface that is electrically connected to the storage battery is provided on the cover.

[0014] Furthermore, a pH sensor is connected to the bottom of the lid and extends into the tank.

[0015] Furthermore, a channel for accommodating pipes is provided at the bottom of the tank. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the rotary joint and tapered joint structure of this utility model;

[0020] Figure 5 This is a partial cross-sectional view of the stirring rod of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Tank body; 11. Mounting hole; 12. Channel; 2. Cover; 21. Display screen; 22. Control button; 3. Motor; 4. Stirring rod; 41. Stirring blade; 411. First channel; 42. Connecting rod; 421. Second channel; 422. Connecting hole; 423. Conical joint; 424. Limiting block; 425. Return spring; 426. Sealing block; 5. Rotary joint; 51. Conical groove; 52. Rubber sealing ring; 53. Limiting groove; 6. Pipeline; 7. pH adjustment liquid container; 8. Water pump; 9. pH sensor. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] like Figures 1-5 As shown in Example 1, an apparatus for adjusting the pH of a solution includes a tank 1 and a cover 2. A motor 3 is installed on the top of the cover 2. The shaft of the motor 3 passes through the cover 2 and is connected to a stirring rod 4. The stirring rod 4 includes a stirring blade 41 and a connecting rod 42. The stirring blade 41 is connected to the middle of the connecting rod 42. A first channel 411 is provided through the stirring blade 41. A second channel 421 is provided through the connecting rod 42. The second channel 421 is connected to the first channel 411 through a connecting hole 422 on the peripheral wall of the connecting rod 42.

[0025] It also includes a rotary joint 5, a mounting hole 11 at the bottom of the tank body 1, a fixed end of the rotary joint 5 sealed and fixedly installed in the mounting hole 11, a bottom of the stirring rod 4 detachably connected to the rotary joint 5, a second channel 421 connected to the rotating end of the rotary joint 5, a pH adjustment liquid container 7 connected to the fixed end of the rotary joint 5 through a pipe 6, a water pump 8 installed in the middle of the pipe 6, a pH sensor 9 installed inside the tank body 1, and the motor 3, the water pump 8 and the pH sensor 9 are all electrically connected to the controller.

[0026] The pH adjustment solution is injected into the stirring rod 4 via the water pump 8. The stirring rod 4 injects the pH adjustment solution while stirring, resulting in more uniform and rapid mixing, and avoiding protein denaturation and precipitation caused by excessively high local concentrations. When the preset pH value is reached, simply stop the water pump 8 and the motor 3. In specific implementation, the rotary joint 5 can be a conventional 360-degree free-rotating water pipe joint.

[0027] Example 2 is a further improvement based on Example 1, and its details are as follows:

[0028] A conical connector 423 is provided at the bottom of the connecting rod 42. A conical groove 51 adapted to the conical connector 423 is provided on the upper end face of the rotary connector 5. A rubber sealing ring 52 is provided on the bottom wall of the conical groove 51. Two limiting blocks 424 are symmetrically arranged on the side wall of the conical connector 423. A limiting groove 53 adapted to the limiting block 424 is opened on the upper end face of the conical groove 51. When the cover 2 is placed on the tank 1, the conical connector 423 fits perfectly with the conical groove 51. The lower end face of the conical connector 423 abuts against the rubber sealing ring 52 to achieve a sealing effect. At this time, the limiting block 424 is located in the limiting groove 53. When the stirring rod 4 rotates, it can drive the rotating end of the rotary connector 5 to rotate. The installation is simple and the dynamic connection between the stirring rod 4 and the pipeline 6 and the delivery of pH adjustment liquid can be achieved without the need for additional parts connection.

[0029] Example 3 is a further improvement based on Example 2, and its details are as follows:

[0030] The stirring blade 41 has an upwardly curved arc structure. When the water pump 8 and motor 3 are stopped, the pH adjustment liquid remaining in the first channel 411 of the stirring blade 41 will not overflow.

[0031] Example 4 is a further improvement on Example 3, and its details are as follows:

[0032] A return spring 425 is fixedly connected to the top of the second channel 421, and a sealing block 426 is fixedly connected to the bottom of the return spring 425. In the absence of water pressure, the sealing block 426 is located at the connecting hole 422. When the water pump 8 is started to inject pH adjusting liquid, the water pressure pushes the sealing block 426 upwards, compressing the return spring 425. The second channel 421 then connects with the first channel 411, allowing the pH adjusting liquid to enter the tank 1 normally through both the second channel 421 and the first channel 411. When the water pump 8 stops, there is insufficient water pressure to push the sealing block 426. Under the elastic action of the return spring 425, the sealing block 426 resets, blocking the connecting hole 422 and preventing the protein solution from entering 421.

[0033] Example 5 is a further improvement based on any one of Examples 1 to 4, and its details are as follows:

[0034] The top of the cover 2 is equipped with a display screen 21 and control buttons 22, both of which are electrically connected to the controller. It can display the pH value and start or stop the water pump 8 and motor 3 as needed.

[0035] Example 6 is a further improvement based on any one of Examples 1 to 5, and its details are as follows:

[0036] A battery is installed inside the cover 2, and a charging interface that is electrically connected to the battery is provided on the cover 2. No external power cord is required during use, making it more convenient.

[0037] Example 7 is a further improvement based on any one of Examples 1 to 6, and its details are as follows:

[0038] The pH sensor 9 is connected to the bottom of the cover 2 and extends into the tank 1. In a specific implementation, the pH sensor 9 can also be located at the bottom of the tank 1. A spring probe and a metal contact are respectively provided at the top of the tank 1 and the bottom of the cover 2. The spring probe is electrically connected to the controller, and the metal contact is electrically connected to the pH sensor 9. When the cover 2 is placed on the tank 1, the spring probe and the metal contact make contact and conduct the pH sensor 9. This design can prevent the long pH sensor 9 from being bent or deformed by impact.

[0039] Example 8 is a further improvement based on any one of Examples 1 to 7, and its details are as follows:

[0040] The bottom of the tank 1 is provided with a channel 12 to accommodate the pipe 6, so that the tank 1 can be placed stably.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for adjusting the PH reaction of a solution, characterized in that, The utility model provides a kind of stirring device for chemical tank, including jar body (1) and cover body (2);The top of the cover body (2) is provided with motor (3), the rotating shaft of the motor (3) passes through the cover body (2) and is connected with stirring rod (4), the stirring rod (4) includes stirring blade (41) and connecting rod (42), the stirring blade (41) is connected to the middle part of the connecting rod (42), the first channel (411) is arranged in the stirring blade (41), the second channel (421) is arranged in the connecting rod (42) and is downwardly penetrated, the second channel (421) is communicated with the first channel (411) by the communicating hole (422) of the connecting rod (42) peripheral wall. It also includes a rotary joint (5), the bottom of the jar body (1) is provided with a mounting hole (11), the fixed end of the rotary joint (5) is sealed and fixedly arranged in the mounting hole (11), the bottom of the stirring rod (4) is detachably connected with the rotary joint (5), the second channel (421) is communicated with the rotating end of the rotary joint (5), the fixed end of the rotary joint (5) is connected with the PH adjusting liquid container (7) through the pipeline (6), the middle part of the pipeline (6) is provided with a water pump (8), the jar body (1) is provided with a PH value sensor (9), the motor (3), the water pump (8) and the PH value sensor (9) are electrically connected with the controller respectively.

2. A device for adjusting the PH reaction of a solution according to claim 1, characterized in that, The bottom of the connecting rod (42) is provided with a tapered joint (423), the upper end surface of the rotary joint (5) is provided with a tapered groove (51) matched with the tapered joint (423), and the bottom wall of the tapered groove (51) is provided with a rubber sealing ring (52); The side wall of the tapered joint (423) is symmetrically provided with two limiting blocks (424), and the upper end surface of the tapered groove (51) is provided with a limiting groove (53) matched with the limiting block (424).

3. A device for adjusting the PH reaction of a solution according to claim 2, characterized in that, The stirring blade (41) is in an upwardly curved arc structure.

4. A device for adjusting the PH reaction of a solution according to claim 3, characterized in that, The top of the second channel (421) is fixedly connected with a return spring (425), the bottom of the return spring (425) is fixedly connected with a blocking block (426), and under the action of no water pressure, the blocking block (426) is located at the communicating hole (422).

5. The device for adjusting the PH reaction of a solution according to claim 1, characterized in that, The top of the cover body (2) is provided with a display screen (21) and a control button (22), and the display screen (21) and the control button (22) are electrically connected with the controller respectively.

6. The device for adjusting the PH reaction of a solution according to claim 1, characterized in that, The cover body (2) is provided with a charging interface electrically connected with the storage battery.

7. The device for adjusting the PH reaction of a solution according to claim 1, characterized in that, The PH value sensor (9) is connected to the bottom of the cover body (2), and the PH value sensor (9) extends into the jar body (1).

8. The device for adjusting the PH reaction of a solution according to claim 1, characterized in that, The bottom of the jar body (1) is provided with a groove (12) for accommodating the pipeline (6).

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