PH value testing device for pigment reaction

Abstract

The invention relates to the technical field of pigment production, and particularly discloses a pH value testing device for pigment reaction, which comprises: a water storage tank, the top end of the right side of the water storage tank is provided with a water inlet communicated with the inner cavity of the water storage tank, and the bottom of the left side of the water storage tank is provided with an air inlet communicated with the inner cavity of the water storage tank; the blanking cap is screwed on the outer wall of the water inlet; the one-way valve is arranged on the outer wall of the air inlet; the storage rack is arranged at the bottom end of the water storage tank, and a plurality of clamping grooves are formed in the top end and the bottom of the outer wall of the storage rack at equal intervals along the circumference; the stirring mechanism is arranged at the bottom end of the storage rack; the flushing mechanism is arranged on the outer wall of the storage frame in a sliding mode. The device effectively solves the problems that in the prior art, pigment solution stirring is not uniform, and a pH tester is tedious to clean and prone to pollution, the accuracy and efficiency of pigment pH value testing are remarkably improved, meanwhile, the operation process is simplified, the operation difficulty and the labor cost are reduced, and a more reliable and efficient tool is provided for quality control of pigment production.

Description

Technical Field

[0001] The invention relates to the technical field of pigment production, in particular to a pH value testing device for pigment reaction. Background Art

[0002] In the production and processing of pigments, the pH value of pigments is a crucial parameter. It is directly related to key properties such as the stability, dispersibility and compatibility with the substrate of the pigment. The pH value of the pigment not only affects the final quality of the product, but also determines the controllability and efficiency of the production process to a certain extent. Therefore, accurate pH testing of pigments is a necessary link in pigment production. During the pigment production reaction, the steps for testing the pH value of the pigment usually include: first, accurately weigh 10 grams of pigment and place it in 100 milliliters of hot distilled water, stir to fully dissolve or disperse the pigment in the water, then cool to 25 degrees Celsius to eliminate the effect of temperature on the pH test results, and finally use a pH meter to accurately test the pH value of the pigment solution. This process ensures the accuracy and reliability of the test results and provides strong data support for quality control in the production process; However, in the prior art, the pH tester used for testing the pH value of the pigment reaction has some obvious disadvantages. Specifically, the prior pH tester is often not provided with a stirring mechanism. When the pH value is tested, if the pigment solution is not stirred, the pigment particles may precipitate or agglomerate in the water, resulting in a decrease in the uniformity of the solution, thereby affecting the accuracy and stability of the pH value test. On the other hand, the existing pH tester also lacks an automatic cleaning mechanism. After a pH test, in order to avoid cross contamination and error accumulation between different tests, the pH tester usually needs to be rinsed. However, in the traditional pH test operation, the pH tester usually needs to be installed on a bracket to maintain stability. After a test, the operator needs to remove the pH tester from the bracket and manually rinse it with a rinser. After the rinse is completed, the pH tester is reinstalled on the bracket for the next test. This operation method is not only cumbersome and time-consuming, but also reduces the test efficiency. Summary of the invention

[0003] The object of the present invention is to provide a pH value testing device for pigment reaction, so as to at least solve the problems of low accuracy and complicated operation proposed in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pH value testing device for pigment reaction, comprising: a water storage tank, a water inlet connected to its inner cavity is provided at the top right side of the water storage tank, and an air inlet connected to its inner cavity is provided at the bottom left side of the water storage tank; a plugging cover is screwed to the outer wall of the water inlet; a one-way valve is arranged on the outer wall of the air inlet; a storage rack is arranged at the bottom end of the water storage tank, and a plurality of slots are equidistantly provided at the top and bottom of the outer wall of the storage rack along the circumference; a stirring mechanism is arranged at the bottom end of the storage rack; a flushing mechanism is slidably arranged on the outer wall of the storage rack; a support tube is arranged at the top end of the water storage tank, and the inner cavity of the support tube and the water storage tank The inner cavities are connected; the piston is slidably adapted to be inserted into the top of the inner cavity of the water storage tank; the piston rod is arranged at the top of the piston, and the top of the outer wall of the piston rod can slidably penetrate the inner cavity of the support tube and extend out of the inner cavity of the support tube; the first spring is sleeved on the outer wall of the piston rod, the top of the first spring is clamped on the top of the outer wall of the piston rod, and the bottom end of the first spring is clamped on the top of the support tube; the pH tester is slidably adapted to be inserted into the inner cavity of the storage rack, and the bottom end of the pH tester extends out of the inner cavity of the storage rack; the support ring is screwed to the inner cavity of the storage rack, the outer wall of the pH tester is adapted to be inserted into the inner cavity of the support ring, and the top of the support ring is in contact with the bottom end of the pH tester.

[0005] Preferably, an adjusting cylinder is threadedly connected to the outer wall of the supporting cylinder.

[0006] Preferably, in order to stir the pigment solution and make the solution uniform, the stirring mechanism includes: teeth, the number of teeth is several, and the several teeth are respectively arranged at the bottom end of the outer wall of the storage rack at equal intervals along the circumferential direction; the gear ring is rotatably sleeved on the bottom end of the outer wall of the storage rack through a bearing, and the teeth are located in the inner cavity of the gear ring; the number of crankshaft stirring rods is four, the top ends of the outer walls of the four crankshaft stirring rods are respectively rotatably arranged at the bottom end of the inner cavity of the gear ring at equal intervals along the circumferential direction through bearings, and the bottom ends of the crankshaft stirring rods are rotatably extended out of the bottom end of the gear ring; the first gear is sleeved on the top end of the outer wall of the crankshaft stirring rod and locked by a top screw, and the first gear and the teeth are meshed; the motor is screwed to the bottom end of the rear side of the outer wall of the storage rack; the connecting rod is locked to the output end of the motor through a coupling; the second gear is sleeved on the bottom of the outer wall of the connecting rod and locked by a top screw, and the second gear is meshed with the gear ring.

[0007] Preferably, in order to rinse the pH tester and the crankshaft stirring rod after the test, the flushing mechanism includes: a sliding frame, the sliding frame can be slidably connected to the outer wall of the storage frame, the top of the sliding frame is provided with sliding cavities that penetrate up and down at equal intervals along the circumferential direction, the sliding cavity can be slidably adapted to be matched to the outer wall of the storage frame, and the left and right sides of the inner wall of the sliding cavity are provided with extrusion grooves; the number of nozzles is several, and the nozzles are respectively arranged on the inner wall of the sliding frame at equal intervals along the circumferential direction; the number of water pipes is several, the top ends of the water pipes are respectively arranged at the bottom end of the inner cavity of the water storage tank at equal intervals along the circumferential direction, and the bottom ends of the water pipes are respectively arranged in the inner cavity of the screw nozzle.

[0008] Preferably, in order to fix the position of the sliding frame, the inner cavity of the extrusion groove is provided with: a second spring, the second spring is embedded in the inner cavity of the extrusion groove, and one end of the second spring is clamped to the inner wall of the second spring; a part of the clamping ball is embedded in the inner cavity of the extrusion groove, and the other part of the clamping ball is adapted to extend into the inner cavity of the clamping groove corresponding to its position, and the other end of the second spring is clamped to the outer wall of the clamping ball.

[0009] Preferably, the length of the card ball extending into the inner cavity of the card slot is smaller than its radius.

[0010] Preferably, the bottom end of the crankshaft stirring rod is located below the bottom end of the pH tester.

[0011] Preferably, the second gear can be driven to rotate through the connecting rod by rotating the output end of the motor. The rotation of the second gear prompts the gear ring to drive the crankshaft stirring rod to rotate with the storage rack as the center. When the crankshaft stirring rod rotates with the storage rack as the center, the cooperation between the teeth and the first gear prompts the crankshaft stirring rod to rotate with itself as the center, thereby utilizing the rotating crankshaft stirring rod to stir the pigment solution.

[0012] The pH value testing device for pigment reaction proposed by the present invention has the following beneficial effects: 1. The present invention utilizes the inner cavity of the storage rack to store the pH tester, and utilizes the support ring to carefully shield the pH tester to prevent the pH tester from slipping out of the inner cavity of the storage rack.

[0013] 2. The present invention drives the connecting rod and the second gear to rotate through the output end of the motor, and utilizes the rotating second gear to prompt the gear ring to drive the crankshaft stirring rod and the first gear to rotate with the center of the storage rack as the center. At the same time, since the teeth are engaged with the first gear, the first gear can drive the crankshaft stirring rod to rotate with itself as the center while rotating with the center of the storage rack as the center, so that the rotating crankshaft stirring rod can be used to stir the pigment solution to prevent uneven mixing of the solution.

[0014] 3. The present invention utilizes a water storage tank to store flushing distilled water. When the pH tester and the crankshaft stirring rod need to be flushed, the sliding frame can be pulled down until the sliding frame drives the nozzle to move to a suitable position. The piston rod is pressed down to drive the piston to move downward. Under the action of air pressure, the distilled water in the inner cavity of the water storage tank can be squeezed into the inner cavity of the water pipe, and the distilled water is sprayed out through the inner cavity of the water pipe and the nozzle to flush the pH tester and the crankshaft stirring rod. By rotating the adjusting cylinder, the distance between the top of the adjusting cylinder and the top of the piston rod can be adjusted, thereby adjusting the amount of water output each time.

[0015] 4. This device effectively solves the problems of uneven stirring of pigment solution and cumbersome and easy contamination of pH tester in the prior art, significantly improves the accuracy and efficiency of pigment pH value testing, simplifies the operation process, reduces the difficulty of operation and labor costs, and provides a more reliable and efficient tool for quality control of pigment production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the flushing state of the present invention; Figure 3 It is a front cross-sectional view of the present invention; Figure 4 An exploded view of the present invention; Figure 5 It is a structural schematic diagram of the stirring mechanism; Figure 6 It is a structural schematic diagram of the flushing mechanism; Figure 7 for Figure 3 A magnified image of point A; Figure 8 for Figure 4 The enlarged view of point B; Fig. 9 for Figure 4 Enlarged view of point C; Fig.10 for Figure 5 The enlarged view of point D; Fig.11 for Figure 6 The enlarged view of point E; Fig.12 for Figure 4 Enlarged view of point F.

[0017] In the figure: 1. water storage tank; 2. water inlet; 3. air inlet; 4. plugging cover; 5. one-way valve; 6. storage rack; 7. card slot; 8. stirring mechanism; 81. teeth; 82. gear ring; 83. crankshaft stirring rod; 84. first gear; 85. motor; 86. connecting rod; 87. second gear; 9. flushing mechanism; 91. sliding rack; 92. sliding cavity; 93. extrusion groove; 94. second spring; 95. card ball; 96. nozzle; 97. water pipe; 10. support cylinder; 11. adjustment cylinder; 12. piston; 13. piston rod; 14. first spring; 15. support ring; 16. pH tester. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 12The present invention provides a technical solution of a pH value testing device for pigment reaction, comprising: a water storage tank 1, a water inlet 2, an air inlet 3, a plugging cover 4, a one-way valve 5, a storage rack 6, a card slot 7, a stirring mechanism 8, a flushing mechanism 9, a support cylinder 10, an adjustment cylinder 11, a piston 12, a piston rod 13, a first spring 14, a support ring 15 and a pH tester 16. The top right side of the water storage tank 1 is provided with a water inlet 2 connected to its inner cavity, the bottom left side of the water storage tank 1 is provided with an air inlet 3 connected to its inner cavity, the water storage tank 1 is used to store distilled water, the plugging cover 4 is screwed to the outer wall of the water inlet 2, the one-way valve 5 is arranged on the outer wall of the air inlet 3, the one-way valve 5 is a prior art, and the water storage tank 1 can be supplied with distilled water through the one-way valve. The storage rack 6 is provided at the bottom end of the water storage tank 1. The top and bottom of the outer wall of the storage rack 6 are provided with a plurality of slots 7 equidistantly around the storage rack 6. The storage rack 6 is used to store the pH tester 16. The stirring mechanism 8 is provided at the bottom end of the storage rack 6. The stirring mechanism 8 is used to stir the pigment solution to promote uniform mixing of the pigment solution. The flushing mechanism 9 is slidably provided on the outer wall of the storage rack 6. The flushing mechanism 9 is used to flush the pH tester 16 and the crankshaft stirring rod 83. The support cylinder 10 is provided at the top end of the water storage tank 1. The inner cavity of the support cylinder 10 is connected to the inner cavity of the water storage tank 1. The adjusting cylinder 11 is screwed to the support cylinder 10. By adjusting the height of the adjusting cylinder 11, the piston rod 13 can be adjusted. The piston 12 is slidably adapted and plugged into the top of the inner cavity of the water storage tank 1. The movement of the piston 12 can compress the gas in the inner cavity of the water storage tank 1, thereby causing the distilled water in the inner cavity of the water storage tank 1 to be ejected through the nozzle 96. The piston rod 13 is arranged at the top of the piston 12. The top of the outer wall of the piston rod 13 can slidably penetrate the inner cavity of the support tube 10 and extend out of the inner cavity of the support tube 10. The first spring 14 is sleeved on the outer wall of the piston rod 13. The top of the first spring 14 is clamped on the top of the outer wall of the piston rod 13. The bottom end of the first spring 14 is clamped on the top of the support tube 10. The first spring 14 is a rotation spring. It undergoes elastic deformation after being squeezed or stretched by external force, and returns to its original state after the external force is removed. In the initial state, the first spring 14 is used to drive the piston 12 to return to the initial position by pushing the piston rod 13, and the pH tester 16 can be slidably adapted and inserted into the inner cavity of the storage rack 6, and the bottom end of the pH tester 16 extends out of the inner cavity of the storage rack 6. The pH tester 16 is a prior art and will not be described in detail here. The pH tester 16 is used to test the pH value of the pigment solution, and the support ring 15 is screwed into the inner cavity of the storage rack 6. The outer wall of the pH tester 16 is adapted and inserted into the inner cavity of the support ring 15, and the top end of the support ring 15 is in contact with the bottom end of the pH tester 16. The support ring 15 is used to shield the pH tester 16 to prevent the pH tester 16 from falling from the inner cavity of the storage rack 6.

[0020] As a preferred embodiment, further, the stirring mechanism 8 includes: teeth 81, a gear ring 82, a crankshaft stirring rod 83, a first gear 84, a motor 85, a connecting rod 86 and a second gear 87. There are several teeth 81, and the several teeth 81 are equidistantly arranged at the bottom end of the outer wall of the storage rack 6 along the circumferential direction. The gear ring 82 is rotatably sleeved on the bottom end of the outer wall of the storage rack 6 through a bearing. The teeth 81 are located in the inner cavity of the gear ring 82. The gear ring 82 is used to drive the crankshaft stirring rod 83 to rotate with the storage rack 6 as the center. There are four crankshaft stirring rods 83. The top ends of the outer walls of the four crankshaft stirring rods 83 are rotatably arranged on the bottom end of the inner cavity of the gear ring 82 along the circumferential direction through bearings. The bottom ends of the crankshaft stirring rods 83 are rotatably extended from the bottom end of the gear ring 82. The rotating crankshaft stirring rods 83 can be used to stir the pigment solution to ensure that when the pigment solution is tested for pH The pigment solution can be mixed evenly. The bottom end of the crankshaft stirring rod 83 is located below the bottom end of the pH tester 16, which can prevent the pH tester 16 from accidentally contacting the cup wall and causing damage to the pH tester 16. The first gear 84 is sleeved on the top of the outer wall of the crankshaft stirring rod 83 and locked by a top screw. The first gear 84 is meshed with the teeth 81. The first gear 84 and the teeth 81 cooperate to drive the crankshaft stirring rod 83 to rotate with itself as the center of the circle. The motor 85 is screwed to the bottom end of the rear side of the outer wall of the storage rack 6. The motor 85 is the prior art. The motor 85 is a servo motor. The motor 85 is connected to a servo controller. No further details are given here. The motor 85 is used here to drive the second gear 87 to rotate. The connecting rod 86 is locked at the output end of the motor 85 through a coupling. The second gear 87 is sleeved on the bottom of the outer wall of the connecting rod 86 and locked by a top screw. The second gear 87 is meshed with the gear ring 82.

[0021] As a preferred embodiment, further, the flushing mechanism 9 includes: a sliding frame 91, a sliding cavity 92, an extrusion groove 93, a second spring 94, a card ball 95, a nozzle 96 and a water pipe 97. The sliding frame 91 can be slidably sleeved on the outer wall of the storage frame 6. The top of the sliding frame 91 is equidistantly provided with sliding cavities 92 that penetrate up and down along the circumferential direction. The sliding cavity 92 can be slidably and appropriately connected to the outer wall of the storage frame 6. Extrusion grooves 93 are provided on both sides of the inner wall of the sliding cavity 92. The second spring 94 is embedded in the inner cavity of the extrusion groove 93. One end of the second spring 94 is carded on the inner wall of the second spring 94. The second spring 94 is a rotation spring. It undergoes elastic deformation after being squeezed or stretched by external force, and returns to its initial state after the external force is removed. The second spring 94 is used here to push the card ball 95 to move into the inner cavity of the card groove 7. A part of the card ball 95 The second spring 94 is embedded in the inner cavity of the extrusion groove 93, and the other part of the card ball 95 is adapted to extend into the inner cavity of the card slot 7 corresponding to its position. The other end of the second spring 94 is connected to the outer wall of the card ball 95. The cooperation between the card ball 95 and the card slot 7 can fix the position of the storage rack 6. The length of the card ball 95 extending into the inner cavity of the card slot 7 is less than its radius, ensuring that the storage rack 6 can slide up and down smoothly. There are several nozzles 96, and several nozzles 96 are respectively arranged on the inner wall of the sliding frame 91 at equal distances along the circumferential direction. Distilled water is sprayed through the nozzles 96 to rinse the pH tester 16 and the crankshaft stirring rod 83. There are several water pipes 97, and the top ends of several water pipes 97 are respectively arranged at the bottom end of the inner cavity of the water storage tank 1 at equal distances along the circumferential direction, and the bottom ends of several water pipes 97 are respectively arranged in the inner cavity of the screw nozzle 96.

[0022] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0023] When in use, open the plug cover 4, and deliver distilled water into the water tank 1 through the water inlet 2. After delivering an appropriate amount of distilled water, cover the plug cover 4, fix the water tank 1 on the bracket, take the beaker containing the pigment solution mixed in equal proportions, place it under the PH tester 16, start the PH tester 16, and use the bracket to drive the water tank 1 to move downward, thereby driving the PH tester 16 to move downward until the PH tester 16 is inserted into the solution to an appropriate depth, start the motor 85, and the output end of the motor 85 can rotate to drive the second gear 87 to rotate through the connecting rod 86. The rotation of the second gear 87 can prompt the gear ring 82 to drive the crankshaft stirring rod 83 to rotate with the storage rack 6 as the center of the circle, and the crankshaft stirring rod 83 can rotate. When the storage rack 6 rotates with the storage rack 6 as the center, the crankshaft stirring rod 83 will rotate with itself as the center under the cooperation between the teeth 81 and the first gear 84, so that the pigment solution can be stirred by the rotating crankshaft stirring rod 83, so that the solution is mixed evenly and the accuracy of the pH value test result is increased. After the pH value test is completed, the storage rack 6 is driven by the bracket to move upward until the pH tester 16 moves out of the pigment solution, the beaker containing the pigment solution is taken away, and the beaker for collecting waste liquid is taken and placed under the device, and the storage rack 6 is driven by the bracket to move downward to the beaker for collecting waste liquid, and the sliding rack 91 is lowered. The sliding rack 91 slides downward and the inner wall of the card slot 7 is used to squeeze the card ball 95 toward The inner cavity of the extrusion groove 93 moves and squeezes the second spring 94 to elastically deform until the card ball 95 moves to the card groove 7 located below. Under the elastic force of the second spring 94, the card ball 95 can be pushed to be squeezed into the inner cavity of the current card groove 7, which is used to fix the position of the sliding frame 91, and the water output is adjusted according to the actual situation. The adjusting cylinder 11 is rotated to make the adjusting cylinder 11 move up and down, so that the distance between the top of the adjusting cylinder 11 and the top of the piston rod 13 can be adjusted until it is adjusted to a suitable distance. The motor 85 is started, and the crankshaft stirring rod 83 is driven by the motor 85 to rotate, and the piston rod 13 is pressed down. The piston 12 is driven downward by the piston rod 13, and the piston 12 moves downward to squeeze the inner cavity of the water storage tank 1 The air in the tank causes the air pressure to increase, so that the distilled water in the inner cavity of the water storage tank 1 can be pushed into the water pipe 97 under the action of the air pressure, and the distilled water is sprayed out through the nozzle 96 to flush the pH tester 16 and the crankshaft stirring rod 83. After the flushing is completed, the hand pressing the piston rod 13 is released, and the piston rod 13 can be pushed to drive the piston 12 to move upward under the elastic force of the first spring 14. The upward movement of the piston 12 can cause the air pressure in the inner cavity of the water storage tank 1 to be negative pressure, so that the one-way valve 5 can be opened under the action of the air pressure to cause the air to flow into the inner cavity of the water storage tank 1 through the one-way valve 5. The flushing of the pH tester 16 and the crankshaft stirring rod 83 can be completed by simply returning the piston rod 13 and the piston 12 to their initial positions.Then, take the filter paper to wipe the pH tester 16 and the crankshaft stirring rod 83, or take the fan to blow dry the distilled water remaining on the pH tester 16 and the crankshaft stirring rod 83. This device effectively solves the problems of uneven stirring of pigment solution and cumbersome and easy contamination of pH tester in the prior art, significantly improves the accuracy and efficiency of pigment pH value testing, simplifies the operation process, reduces the difficulty of operation and labor costs, and provides a more reliable and efficient tool for quality control of pigment production.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pH value testing device for pigment reaction, characterized in that: include: A water storage tank (1), wherein a water inlet (2) communicating with an inner cavity of the water storage tank (1) is provided at the top right side of the water storage tank (1), and an air inlet (3) communicating with the inner cavity of the water storage tank (1) is provided at the bottom left side of the water storage tank (1); A plugging cover (4), the plugging cover (4) being screwed to the outer wall of the water inlet (2); a one-way valve (5), wherein the one-way valve (5) is arranged on an outer wall of the air inlet (3); A storage rack (6), the storage rack (6) being arranged at the bottom end of the water storage tank (1), and a plurality of slots (7) being provided at equal intervals along the circumference of the top and bottom of the outer wall of the storage rack (6); A stirring mechanism (8), wherein the stirring mechanism (8) is arranged at the bottom end of the storage rack (6); A flushing mechanism (9), wherein the flushing mechanism (9) is slidably disposed on an outer wall of the storage rack (6); A support tube (10), the support tube (10) being arranged at the top end of the water storage tank (1), the inner cavity of the support tube (10) being in communication with the inner cavity of the water storage tank (1); A piston (12), the piston (12) being slidably adapted to be plugged into the top end of the inner cavity of the water storage tank (1); A piston rod (13), the piston rod (13) being arranged at the top end of the piston (12), the top end of the outer wall of the piston rod (13) being slidable through the inner cavity of the support cylinder (10) and extending out of the inner cavity of the support cylinder (10); a first spring (14), wherein the first spring (14) is sleeved on the outer wall of the piston rod (13), the top end of the first spring (14) is clamped on the top end of the outer wall of the piston rod (13), and the bottom end of the first spring (14) is clamped on the top end of the support tube (10); A pH tester (16), the pH tester (16) being slidably adapted to be inserted into the inner cavity of the storage rack (6), and the bottom end of the pH tester (16) extending out of the inner cavity of the storage rack (6); A support ring (15) is screwed into the inner cavity of the storage rack (6); the outer wall of the pH tester (16) is adapted to be inserted into the inner cavity of the support ring (15); the top end of the support ring (15) is in contact with the bottom end of the pH tester (16).

2. A pH value testing device for pigment reaction according to claim 1, characterized in that: An adjustment cylinder (11) is threadedly connected to the outer wall of the support cylinder (10).

3. A pH value testing device for pigment reaction according to claim 2, characterized in that: The stirring mechanism (8) comprises: Teeth (81), the number of the teeth (81) being a plurality, and the plurality of teeth (81) being arranged at equal intervals along the circumferential direction at the bottom end of the outer wall of the storage rack (6); A gear ring (82), the gear ring (82) being rotatably sleeved on the bottom end of the outer wall of the storage rack (6) via a bearing, and the teeth (81) being located in the inner cavity of the gear ring (82); Crankshaft stirring rods (83), the number of the crankshaft stirring rods (83) being four, the top ends of the outer walls of the four crankshaft stirring rods (83) being rotatably arranged at the bottom end of the inner cavity of the gear ring (82) via bearings at equal intervals along the circumferential direction, and the bottom ends of the crankshaft stirring rods (83) being rotatably extended out of the bottom end of the gear ring (82); A first gear (84), the first gear (84) being sleeved on the top end of the outer wall of the crankshaft stirring rod (83) and being locked by a top screw, the first gear (84) being meshed with the teeth (81); A motor (85), the motor (85) being screw-connected to the bottom end of the rear side of the outer wall of the storage rack (6); A connecting rod (86), wherein the connecting rod (86) is locked at an output end of the motor (85) via a coupling; The second gear (87) is sleeved on the bottom of the outer wall of the connecting rod (86) and is locked by a top screw. The second gear (87) is meshed with the gear ring (82).

4. A pH value testing device for pigment reaction according to claim 3, characterized in that: The flushing mechanism (9) comprises: A sliding frame (91), the sliding frame (91) being slidably sleeved on the outer wall of the storage frame (6), the top end of the sliding frame (91) being provided with sliding cavities (92) penetrating upward and downward at equal intervals along the circumferential direction, the sliding cavity (92) being slidably and suitably sleeved on the outer wall of the storage frame (6), and the inner wall of the sliding cavity (92) being provided with extrusion grooves (93) on both left and right sides; A nozzle (96), wherein the number of the nozzles (96) is a plurality, and the plurality of nozzles (96) are respectively arranged on the inner wall of the sliding frame (91) at equal intervals along the circumferential direction; Water pipes (97), the number of the water pipes (97) is several, the top ends of the several water pipes (97) are respectively arranged at equal intervals along the circumferential direction at the bottom end of the inner cavity of the water storage tank (1), and the bottom ends of the several water pipes (97) are respectively arranged in the inner cavity of the screw nozzle (96).

5. A pH value testing device for pigment reaction according to claim 4, characterized in that: The inner cavity of the extrusion groove (93) is provided with: a second spring (94), the second spring (94) being embedded in the inner cavity of the extrusion groove (93), and one end of the second spring (94) being clamped on the inner wall of the second spring (94); A locking ball (95), a portion of which is embedded in the inner cavity of the extrusion groove (93), and another portion of which is adapted to extend into the inner cavity of the locking groove (7) corresponding to its position, and the other end of the second spring (94) is locked to the outer wall of the locking ball (95).

6. A pH value testing device for pigment reaction according to claim 5, characterized in that: The length of the clamping ball (95) extending into the inner cavity of the clamping groove (7) is less than its radius.

7. A pH value testing device for pigment reaction according to claim 6, characterized in that: The bottom end of the crankshaft stirring rod (83) is located below the bottom end of the pH tester (16).

8. A pH value testing device for pigment reaction according to claim 7, characterized in that: The output end of the motor (85) is rotated to drive the second gear (87) to rotate via the connecting rod (86). The rotation of the second gear (87) causes the gear ring (82) to drive the crankshaft stirring rod (83) to rotate with the storage rack (6) as the center. When the crankshaft stirring rod (83) rotates with the storage rack (6) as the center, the teeth (81) and the first gear (84) cooperate to cause the crankshaft stirring rod (83) to rotate with itself as the center, thereby stirring the pigment solution by using the rotating crankshaft stirring rod (83).

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