阅读说明：本技术 一种油墨生产工艺 (Printing ink production process ) 是由 张明裕 许坤宗 于 2020-04-20 设计创作，主要内容包括：本发明属于油墨技术领域,具体的说是一种油墨生产工艺,该工艺中使用的反应设备包括圆筒形上端开口的筒体；筒体底部设有下料口,筒体底部固连有底座,筒体顶部固连有横板；横板中部固连有搅拌电机,搅拌电机通过控制器连接电源；搅拌电机输出轴贯穿横板并延伸至筒体内部,搅拌电机的输出轴上固连有搅拌单元；横板上固连有支架,支架上设有滑台；滑台上固连有电机座,电机座上固连有伺服电机,伺服电机通过控制器连接电源；伺服电机的输出轴上固连有卷筒,卷筒上卷绕有拉绳,拉绳底端固连有浮球,浮球底部设有pH计的探头；本发明通过浮球控制探头的测量深度,适应筒体内的不同液位。(The invention belongs to the technical field of printing ink, and particularly relates to a printing ink production process, wherein reaction equipment used in the process comprises a cylindrical barrel with an opening at the upper end; the bottom of the barrel is provided with a feed opening, the bottom of the barrel is fixedly connected with a base, and the top of the barrel is fixedly connected with a transverse plate; the middle part of the transverse plate is fixedly connected with a stirring motor, and the stirring motor is connected with a power supply through a controller; an output shaft of the stirring motor penetrates through the transverse plate and extends into the barrel body, and a stirring unit is fixedly connected to the output shaft of the stirring motor; the transverse plate is fixedly connected with a support, and a sliding table is arranged on the support; the sliding table is fixedly connected with a motor base, the motor base is fixedly connected with a servo motor, and the servo motor is connected with a power supply through a controller; a winding drum is fixedly connected to an output shaft of the servo motor, a pull rope is wound on the winding drum, a floating ball is fixedly connected to the bottom end of the pull rope, and a probe of a pH meter is arranged at the bottom of the floating ball; the invention controls the measuring depth of the probe through the floating ball and is suitable for different liquid levels in the cylinder body.)

1. A printing ink production process is characterized in that: the method comprises the following steps:

s1, preparing raw materials: weighing the solid ink raw materials and the liquid ink raw materials according to a specified ratio, screening the solid ink raw materials, taking the solid ink raw materials as a raw material A after screening, taking the solid ink raw materials as a raw material B without screening, and then blowing the raw material B to remove light impurities on the surface to obtain a raw material C;

s2, crushing the raw material C obtained in the S1 by using crushing equipment to obtain a raw material D, then screening the raw material D, and repeatedly crushing the raw material D which does not pass the screening until the raw material D passes the screening; then, fully mixing the raw material A obtained in the step S1 with the sieved raw material D to obtain a raw material E;

s3, fully grinding the raw material E through grinding equipment, then putting the ground raw material E into reaction equipment, simultaneously adding the weighed liquid ink raw material in S1, continuously stirring for 30-50min at a stirring speed of 2000-2100r/min, then controlling to reduce the rotation speed to 1000-1200r/min, dropwise adding an ammonia-valent neutralizing agent, continuously measuring the pH value in the reaction equipment until the pH value in the reaction equipment is 7.6-8.2, and then stopping dropwise adding the ammonia neutralizing agent;

s4, adding a defoaming agent and an emulsifying agent into the reaction equipment, continuously stirring for 1-1.5h, controlling the stirring temperature to be 35-40 ℃, stopping stirring after the mixed substances in the reaction equipment are foamless and homogeneous, and then preparing the ink;

wherein the reaction apparatus used in S3 comprises a cylindrical barrel (1) with an open upper end; a feed opening is formed in the bottom of the barrel body (1), a base (11) is fixedly connected to the bottom of the barrel body (1), and a transverse plate (12) is fixedly connected to the top of the barrel body (1); the middle part of the transverse plate (12) is fixedly connected with a stirring motor (13), and the stirring motor (13) is connected with a power supply through a controller; an output shaft of the stirring motor (13) penetrates through the transverse plate (12) and extends into the barrel body (1), and a stirring unit (14) is fixedly connected to the output shaft of the stirring motor (13); the transverse plate (12) is fixedly connected with a support (2), and a sliding table (21) is arranged on the support (2); a motor base (22) is fixedly connected to the sliding table (21), a servo motor (23) is fixedly connected to the motor base (22), and the servo motor (23) is connected with a power supply through a controller; a winding drum (24) is fixedly connected to an output shaft of the servo motor (23), a pull rope (25) is wound on the winding drum (24), a floating ball (26) is fixedly connected to the bottom end of the pull rope (25), and a probe (27) of a pH meter is arranged at the bottom of the floating ball (26); the measuring depth of the probe (27) is controlled by the floating ball (26) to adapt to different liquid levels in the cylinder body (1).

2. An ink production process according to claim 1, characterized in that: a first hole (28) penetrating through the floating ball (26) is formed in the position, corresponding to the pull rope (25), of the floating ball (26), and a countersunk head part (29) is arranged at the bottom of the first hole (28); the probe (27) is positioned in the countersunk head part (29), the probe (27) is fixedly connected with the pull rope (25) through the limiting ring (3), and the pull rope (25) on one side of the first hole (28) far away from the limiting ring (3) is fixedly connected with a clamping block (31); the collision damage of the probe (27) is reduced by matching the limiting ring (3) with the countersunk head part (29).

3. An ink production process according to claim 2, characterized in that: the floating ball (26) is in an inverted water-drop shape, the bottom of the floating ball (26) is provided with a counterweight ring (32), the downward movement of the probe (27) is ensured through the counterweight ring (32), and the measuring efficiency of the probe (27) is improved.

4. A process for the production of an ink according to claim 3, wherein: a sliding rail (33) is arranged between the sliding table (21) and the support (2), the sliding rail (33) is fixedly connected with the support (2), and the sliding table (21) is connected with the sliding rail (33) in a sliding manner; the sliding table (21) is provided with a driving unit for driving the sliding table (21) to move, and the driving unit is used for controlling the sliding table (21) to move; the lateral wall of the barrel body (1) is fixedly connected with a cleaning pool (34) at a position corresponding to the sliding rail (33), a protection liquid is filled in the cleaning pool (34), and the probe (27) is moved and soaked in the protection liquid, so that the measurement accuracy of the probe (27) is ensured.

5. An ink production process according to claim 4, characterized in that: the bottom of the cleaning pool (34) is provided with a magnet (35); the counterweight ring (32) is a magnetic ring, the magnetic poles of the counterweight block on one side adjacent to the magnetic block (35) are opposite, and the magnetic block (35) attracts the counterweight ring (32) to increase the cleaning effect of the floating ball (26).

6. An ink production process according to claim 5, characterized in that: the hole depth of the countersunk head part (29) is greater than the length of the probe (27), and a group of drain holes (36) are formed in the side wall of the countersunk head part (29); the middle of the magnetic block (35) is provided with a cylinder (37) matched with the countersunk head part (29), and the protective liquid in the countersunk head part (29) is extruded through the cylinder (37), so that the cleaning efficiency of the probe (27) is further improved.

Technical Field

The invention belongs to the technical field of printing ink, and particularly relates to a printing ink production process.

Background

Ink is an important material for printing, and is used for expressing patterns and characters on a printing material through printing or inkjet. The ink comprises a main component and an auxiliary component which are uniformly mixed and repeatedly rolled to form a viscous colloidal fluid. The paint consists of a binder (resin), a pigment, a filler, an auxiliary agent, a solvent and the like. The printing ink is used for various printing of books, periodicals, packaging decoration, building decoration, electronic circuit boards and the like. As social demands increase, ink varieties and yields also expand and grow accordingly.

Disclosure of Invention

The invention provides an ink production process, which aims to make up for the defects of the prior art and solve the problems that the detection of the pH value needs manual measurement and is low in efficiency, and the probe of a pH tester is directly exposed in dry air, so that the moisture at the probe is easily evaporated, and the measurement accuracy and the service life of the probe are seriously influenced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the ink production process comprises the following steps:

s1, preparing raw materials: weighing the solid ink raw materials and the liquid ink raw materials according to a specified ratio, screening the solid ink raw materials, taking the solid ink raw materials as a raw material A after screening, taking the solid ink raw materials as a raw material B without screening, and then blowing the raw material B to remove light impurities on the surface to obtain a raw material C;

s2, crushing the raw material C obtained in the S1 by using crushing equipment to obtain a raw material D, then screening the raw material D, and repeatedly crushing the raw material D which does not pass the screening until the raw material D passes the screening; then, fully mixing the raw material A obtained in the step S1 with the sieved raw material D to obtain a raw material E;

s3, fully grinding the raw material E through grinding equipment, then putting the ground raw material E into reaction equipment, simultaneously adding the weighed liquid ink raw material in S1, continuously stirring for 30-50min at a stirring speed of 2000-2100r/min, then controlling to reduce the rotation speed to 1000-1200r/min, dropwise adding an ammonia-valent neutralizing agent, continuously measuring the pH value in the reaction equipment until the pH value in the reaction equipment is 7.6-8.2, and then stopping dropwise adding the ammonia neutralizing agent;

s4, adding a defoaming agent and an emulsifying agent into the reaction equipment, continuously stirring for 1-1.5h, controlling the stirring temperature to be 35-40 ℃, stopping stirring after the mixed substances in the reaction equipment are foamless and homogeneous, and then preparing the ink;

wherein the reaction apparatus used in S3 comprises a cylindrical barrel with an open upper end; the bottom of the barrel is provided with a feed opening, the bottom of the barrel is fixedly connected with a base, and the top of the barrel is fixedly connected with a transverse plate; the middle part of the transverse plate is fixedly connected with a stirring motor, and the stirring motor is connected with a power supply through a controller; an output shaft of the stirring motor penetrates through the transverse plate and extends into the barrel body, and a stirring unit is fixedly connected to the output shaft of the stirring motor; the transverse plates are fixedly connected with a support, and a sliding table is arranged on the support; the sliding table is fixedly connected with a motor base, the motor base is fixedly connected with a servo motor, and the servo motor is connected with a power supply through a controller; the output shaft of the servo motor is fixedly connected with a winding drum, a pull rope is wound on the winding drum, the bottom end of the pull rope is fixedly connected with a floating ball, and the bottom of the floating ball is provided with a probe of a pH meter; the measuring depth of the probe is controlled by the floating ball, so that the probe is suitable for different liquid levels in the cylinder; when the device is used, raw materials are loaded into the barrel from the top of the barrel, the stirring motor is started through the controller, the stirring motor drives the stirring unit to rotate, so that the raw materials in the barrel are uniformly mixed, the corresponding ammonia neutralizing agent is measured through the titration device, the stirring unit is dropwise dripped into the barrel, the stirring unit is kept to continuously work, the servo motor is controlled to rotate through the controller at regular time within the interval time of dripping the ammonia neutralizing agent, the barrel is driven to rotate, the floating ball and the probe are put down, the probe is immersed in the mixed liquid in the barrel, the pH value of the mixed liquid is measured, the floating ball and the probe are lifted through the reverse rotation of the servo motor, the next measurement is carried out, when the pH value of the mixed liquid measured by the probe reaches a preset range, the stirring motor is controlled to stop rotating through the controller, the mixed liquid is discharged through the discharging port, and the probe is, so that the probe is immersed into the mixed liquid by a corresponding depth, and the detection efficiency of the probe is improved.

Preferably, a first hole penetrating through the floating ball is formed in the position, corresponding to the pull rope, of the floating ball, and a countersunk head is arranged at the bottom of the first hole; the probe is positioned in the countersunk head part and is fixedly connected with the pull rope through the limiting ring, and the pull rope on one side of the first hole, which is far away from the limiting ring, is fixedly connected with a clamping block; the collision damage of the probe is reduced by matching the limiting ring with the countersunk head part; through countersunk head portion cooperation spacing ring for when the floater is put into the barrel, the probe is because the effect of self gravity slides down, cooperate fixture block and floater control probe's dive degree of depth, the accurate pH valve of measuring mixed liquid of the probe of being convenient for, after probe measurement is accomplished, drive the reel through the servo motor reversal and rotate and the rolling stay cord, and then in driving the probe and rise and retract countersunk head portion, after the spacing ring touches countersunk head portion bottom, the spacing ring drives the floater upward movement together, and then avoid the probe to expose, along with the ascending in-process of floater and barrel inner wall collision, reduce the damage of probe.

Preferably, the floating ball is in an inverted water-drop shape, the bottom of the floating ball is provided with a counterweight ring, the downward probe is ensured through the counterweight ring, and the measurement efficiency of the probe is improved; the center of the floating ball is located near the counterweight ring through the matching of the drop-shaped floating ball with the counterweight ring, so that the correct falling posture of the floating ball is kept, the probe in the sinking head part is accurately and quickly submerged into the mixed liquid, and the detection efficiency of the probe is further improved.

Preferably, a sliding rail is arranged between the sliding table and the support, the sliding rail is fixedly connected with the support, and the sliding table is connected with the sliding rail in a sliding manner; the sliding table is provided with a driving unit for driving the sliding table to move, and the driving unit is used for controlling the sliding table to move; a cleaning pool is fixedly connected to the side wall of the barrel body and corresponds to the slide rail, a protective liquid is filled in the cleaning pool, and the measuring accuracy of the probe is ensured by moving the probe and soaking the probe in the protective liquid; because the glass electrode on the probe of the pH tester is usually made of a glass film, the main components of the glass electrode are silicon dioxide, lithium oxide (or sodium oxide), alkaline earth metal oxide and rare earth metal oxide, the response mechanism of the probe to hydrogen ions in a solution during testing is that after the glass sensitive film is soaked in the aqueous solution, a hydrated gel layer is formed on the surface, the hydrogen ions in the gel layer and the hydrogen ions in the aqueous solution perform exchange reaction to measure the content of the hydrogen ions in the gel layer, so the sensitivity of the glass film directly determines the accuracy of pH value measurement, the probe is directly exposed in dry air to easily evaporate water at the probe, the measurement accuracy and the service life of the probe are seriously influenced, at the moment, after the probe is lifted by matching with a winding drum and a pull rope, a driving unit controls a sliding table to slide right above a cleaning pool, then a floating ball and the probe are put down, so that the probe is immersed in a, and further, the exposure of the probe is reduced, and the probe is soaked and cleaned at the same time, so that the accuracy of the next measurement of the probe is ensured.

Preferably, the bottom of the cleaning pool is provided with a magnetic block; the counterweight ring is a magnetic ring, the magnetic poles of the counterweight block on one side adjacent to the magnetic block are opposite, and the cleaning effect of the floating ball is improved by attracting the counterweight ring through the magnetic block; the magnetic block attracts the counterweight ring, so that the probe and the floating ball are completely immersed in the protective liquid, the floating ball is fully soaked and cleaned, and the phenomenon that the residual mixed liquid on the surface of the floating ball flows to the surface of the probe along with the floating ball to further influence the measurement precision of the probe is avoided.

Preferably, the depth of the countersunk head part hole is greater than the length of the probe, and a group of drain holes are formed in the side wall of the countersunk head part; the middle part of the magnetic block is provided with a cylinder matched with the countersunk head part, and the protective liquid in the countersunk head part is extruded by the cylinder, so that the cleaning efficiency of the probe is further improved; when the magnetic block attracts the counterweight ring, the cylinder is aligned and inserted into the countersunk head part, and due to the fact that the cylinder and the countersunk head part are matched with each other, the protection liquid in the countersunk head part is extruded and then discharged through the water discharging hole, water flow near the probe is increased, the cleaning efficiency of the probe is further increased, the cleanness of the probe is guaranteed, and the detection precision of the probe is increased.

The invention has the following beneficial effects:

1. according to the ink production process, the floating ball is matched with the pull rope, so that the probe is suitable for mixed liquid with different liquid levels, the probe is immersed into the mixed liquid to a corresponding depth, and the detection efficiency of the probe is improved.

2. According to the ink production process, after the probe is lifted up through the winding drum and the pull rope, the sliding table is controlled by the driving unit to slide to the position right above the cleaning pool, the floating ball and the probe are put down, so that the probe is immersed in the protective liquid, the exposure of the probe is reduced, meanwhile, the probe is soaked and cleaned, and the accuracy of the next measurement of the probe is guaranteed.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a perspective view of a reaction apparatus in the present invention;

FIG. 3 is a front view of a reaction apparatus in the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B;

in the figure: the device comprises a barrel 1, a base 11, a transverse plate 12, a stirring motor 13, a stirring unit 14, a support 2, a sliding table 21, a motor base 22, a servo motor 23, a winding drum 24, a pull rope 25, a floating ball 26, a probe 27, a first hole 28, a countersunk head 29, a limiting ring 3, a clamping block 31, a counterweight ring 32, a sliding rail 33, a cleaning pool 34, a magnetic block 35, a water drainage hole 36 and a cylinder 37.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the ink production process of the present invention includes the following steps:

s1, preparing raw materials: weighing the solid ink raw materials and the liquid ink raw materials according to a specified ratio, screening the solid ink raw materials, taking the solid ink raw materials as a raw material A after screening, taking the solid ink raw materials as a raw material B without screening, and then blowing the raw material B to remove light impurities on the surface to obtain a raw material C;

s2, crushing the raw material C obtained in the S1 by using crushing equipment to obtain a raw material D, then screening the raw material D, and repeatedly crushing the raw material D which does not pass the screening until the raw material D passes the screening; then, fully mixing the raw material A obtained in the step S1 with the sieved raw material D to obtain a raw material E;

s3, fully grinding the raw material E through grinding equipment, then putting the ground raw material E into reaction equipment, simultaneously adding the weighed liquid ink raw material in S1, continuously stirring for 30-50min at a stirring speed of 2000-2100r/min, then controlling to reduce the rotation speed to 1000-1200r/min, dropwise adding an ammonia-valent neutralizing agent, continuously measuring the pH value in the reaction equipment until the pH value in the reaction equipment is 7.6-8.2, and then stopping dropwise adding the ammonia neutralizing agent;

s4, adding a defoaming agent and an emulsifying agent into the reaction equipment, continuously stirring for 1-1.5h, controlling the stirring temperature to be 35-40 ℃, stopping stirring after the mixed substances in the reaction equipment are foamless and homogeneous, and then preparing the ink;

wherein the reaction apparatus used in S3 comprises a cylindrical barrel 1 having an open upper end; the bottom of the cylinder body 1 is provided with a feed opening, the bottom of the cylinder body 1 is fixedly connected with a base 11, and the top of the cylinder body 1 is fixedly connected with a transverse plate 12; the middle part of the transverse plate 12 is fixedly connected with a stirring motor 13, and the stirring motor 13 is connected with a power supply through a controller; an output shaft of the stirring motor 13 penetrates through the transverse plate 12 and extends into the barrel 1, and a stirring unit 14 is fixedly connected to the output shaft of the stirring motor 13; the transverse plate 12 is fixedly connected with a support 2, and a sliding table 21 is arranged on the support 2; the sliding table 21 is fixedly connected with a motor base 22, the motor base 22 is fixedly connected with a servo motor 23, and the servo motor 23 is connected with a power supply through a controller; a winding drum 24 is fixedly connected to an output shaft of the servo motor 23, a pull rope 25 is wound on the winding drum 24, a floating ball 26 is fixedly connected to the bottom end of the pull rope 25, and a probe 27 of a pH meter is arranged at the bottom of the floating ball 26; the measuring depth of the probe 27 is controlled by the floating ball 26 to adapt to different liquid levels in the cylinder 1; when the device is used, raw materials are loaded into the barrel body 1 from the top of the barrel body 1, the stirring motor 13 is started through the controller, the stirring motor 13 drives the stirring unit 14 to rotate, so that the raw materials in the barrel body 1 are uniformly mixed, then the corresponding ammonia neutralizing agent is measured through the titration device, then the ammonia neutralizing agent is dripped into the barrel body 1 drop by drop, meanwhile, the stirring unit 14 is kept to work continuously, the servo motor 23 is controlled to rotate through the controller at regular time within the interval time of dripping the ammonia neutralizing agent, the winding drum 24 is driven to rotate, the floating ball 26 and the probe 27 are put down, so that the probe 27 is immersed in the mixed liquid in the barrel body 1, the pH value of the mixed liquid is measured, then the floating ball 26 and the probe 27 are reversely rotated and lifted through the servo motor 23 so as to carry out the next measurement, when the pH value of the mixed liquid measured by the probe 27 reaches the preset range, through floater 26 cooperation stay cord 25 for probe 27 adapts to the mixed liquid of different liquid levels, makes probe 27 dip the corresponding degree of depth in the mixed liquid, increases probe 27's detection efficiency.

As an embodiment of the present invention, a first hole 28 penetrating through the floating ball 26 is formed at a position of the floating ball 26 corresponding to the pull rope 25, and a countersunk head 29 is arranged at the bottom of the first hole 28; the probe 27 is positioned in the countersunk head part 29, the probe 27 is fixedly connected with the pull rope 25 through the limiting ring 3, and the pull rope 25 of the first hole 28 far away from the limiting ring 3 is fixedly connected with a clamping block 31; the collision damage of the probe 27 is reduced by matching the limiting ring 3 with the countersunk head part 29; through heavy head portion 29 cooperation spacing ring 3 for when floater 26 was put into barrel 1, probe 27 because the effect of self gravity down slides, cooperation fixture block 31 and floater 26 control the dive degree of depth of probe 27, be convenient for probe 27 accurate measurement mixed liquid's pH valve, after probe 27 measures and accomplishes, drive reel 24 through servo motor 23 reversal and rotate and rolling stay cord 25, and then drive probe 27 and rise and retract in heavy head portion 29, after spacing ring 3 touched heavy head portion 29 bottom, spacing ring 3 drove floater 26 upward movement together, and then avoid probe 27 to expose, along with the ascending in-process of floater 26 collides with barrel 1 inner wall, reduce the damage of probe 27.

As an embodiment of the invention, the floating ball 26 is in an inverted water drop shape, and the bottom of the floating ball 26 is provided with a counterweight ring 32, so that the counterweight ring 32 ensures that the probe 27 faces downwards, and the measurement efficiency of the probe 27 is increased; through the cooperation of the water droplet-shaped floating ball 26 with the counterweight ring 32, the center of the floating ball 26 is located near the counterweight ring 32, so that the floating ball 26 is kept in a correct falling posture, the probe 27 in the countersunk head part 29 is accurately and quickly submerged into the mixed liquid, and the detection efficiency of the probe 27 is further improved.

As an embodiment of the present invention, a sliding rail 33 is disposed between the sliding table 21 and the bracket 2, the sliding rail 33 is fixedly connected with the bracket 2, and the sliding table 21 is slidably connected with the sliding rail 33; the sliding table 21 is provided with a driving unit for driving the sliding table 21 to move, and the driving unit is used for controlling the sliding table 21 to move; a cleaning pool 34 is fixedly connected to the side wall of the barrel 1 at a position corresponding to the slide rail 33, a protective liquid is filled in the cleaning pool 34, and the measuring accuracy of the probe 27 is ensured by moving and soaking the probe 27 in the protective liquid; because the glass electrode on the probe 27 of the pH tester is usually made of a glass film, the main components of the glass electrode are silicon dioxide, lithium oxide (or sodium oxide), oxide of alkaline earth metal and oxide of rare earth metal, the response mechanism of the probe 27 to hydrogen ions in a solution during testing is that after the glass sensitive film is soaked in the aqueous solution, a hydrated gel layer is formed on the surface, the hydrogen ions in the gel layer and the hydrogen ions in the aqueous solution perform an exchange reaction to measure the content of the hydrogen ions, so the sensitivity of the glass film directly determines the accuracy of pH value measurement, the probe 27 is directly exposed in dry air to easily evaporate water at the probe 27, the measurement accuracy and the service life of the probe 27 are seriously affected, at this time, after the probe 27 is lifted by the winding drum 24 in cooperation with the pull rope 25, the sliding table 21 is controlled by the driving unit to slide to the position right above the cleaning pool 34, then the floating ball 26 and the probe 27, the probe 27 is immersed in the protective liquid, so that the exposure of the probe 27 is reduced, and meanwhile, the probe 27 is soaked and cleaned, so that the accuracy of the next measurement of the probe 27 is ensured.

As an embodiment of the present invention, a magnetic block 35 is disposed at the bottom of the cleaning tank 34; the counterweight ring 32 is a magnetic ring, the magnetic pole of one side of the counterweight block adjacent to the magnetic block 35 is opposite, and the magnetic block 35 attracts the counterweight ring 32 to increase the cleaning effect of the floating ball 26; the magnetic block 35 attracts the counterweight ring 32, so that the probe 27 and the floating ball 26 are completely immersed in the protective liquid, the floating ball 26 is sufficiently soaked and cleaned, and the mixed liquid remaining on the surface of the floating ball 26 is prevented from flowing to the surface of the probe 27 along with the floating ball 26, so that the measurement accuracy of the probe 27 is further influenced.

As an embodiment of the present invention, the bore depth of the countersunk head portion 29 is greater than the length of the probe 27, and a group of water drain holes 36 are formed on the side wall of the countersunk head portion 29; a cylinder 37 matched with the countersunk head part 29 is arranged in the middle of the magnetic block 35, and the protective liquid in the countersunk head part 29 is extruded through the cylinder 37, so that the cleaning efficiency of the probe 27 is further improved; when the magnetic block 35 attracts the counterweight ring 32, the cylinder 37 is aligned with and inserted into the countersunk head portion 29, and due to the mutual matching of the cylinder 37 and the countersunk head portion 29, the protection liquid in the countersunk head portion 29 is extruded and then discharged through the water discharge hole 36, so that the water flow near the probe 27 is increased, the cleaning efficiency of the probe 27 is further increased, the cleaning of the probe 27 is ensured, and the detection precision of the probe 27 is increased.

When the device is used, raw materials are loaded into the barrel body 1 from the top of the barrel body 1, the stirring motor 13 is started through the controller, the stirring motor 13 drives the stirring unit 14 to rotate, so that the raw materials in the barrel body 1 are uniformly mixed, then the corresponding ammonia neutralizing agent is measured through the titration device, then the ammonia neutralizing agent is dripped into the barrel body 1 drop by drop, meanwhile, the stirring unit 14 is kept to work continuously, the servo motor 23 is controlled to rotate through the controller at regular time within the interval time of dripping the ammonia neutralizing agent, the winding drum 24 is driven to rotate, the floating ball 26 and the probe 27 are put down, so that the probe 27 is immersed in the mixed liquid in the barrel body 1, the pH value of the mixed liquid is measured, then the floating ball 26 and the probe 27 are reversely rotated and lifted through the servo motor 23 so as to carry out the next measurement, when the pH value of the mixed liquid measured by the probe 27 reaches the preset range, the floating ball 26 is matched with the pull rope 25, so that the probe 27 is suitable for mixed liquid with different liquid levels, the probe 27 is immersed into the mixed liquid by a corresponding depth, and the detection efficiency of the probe 27 is improved; when the floating ball 26 is placed in the barrel 1 through the matching of the countersunk head part 29 and the limiting ring 3, the probe 27 slides downwards under the action of self gravity, the diving depth of the probe 27 is controlled through the matching of the clamping block 31 and the floating ball 26, so that the probe 27 can accurately measure the pH value of a mixed solution, after the measurement of the probe 27 is completed, the servo motor 23 rotates reversely to drive the winding drum 24 to rotate and wind the pull rope 25, the probe 27 is driven to ascend and retract into the countersunk head part 29, and after the limiting ring 3 touches the bottom of the countersunk head part 29, the limiting ring 3 drives the floating ball 26 to move upwards together, so that the probe 27 is prevented from being exposed, and collides with the inner wall of the barrel 1 in the ascending process of the floating; the center of the floating ball 26 is positioned near the counterweight ring 32 by the water drop-shaped floating ball 26 matching with the counterweight ring 32, so that the floating ball 26 is kept in a correct falling posture, the probe 27 in the countersunk head part 29 is accurately and quickly submerged into the mixed liquid, and the detection efficiency of the probe 27 is further increased; because the glass electrode on the probe 27 of the pH tester is usually made of a glass film, the main components of the glass electrode are silicon dioxide, lithium oxide (or sodium oxide), oxide of alkaline earth metal and oxide of rare earth metal, the response mechanism of the probe 27 to hydrogen ions in a solution during testing is that after the glass sensitive film is soaked in the aqueous solution, a hydrated gel layer is formed on the surface, the hydrogen ions in the gel layer and the hydrogen ions in the aqueous solution perform an exchange reaction to measure the content of the hydrogen ions, so the sensitivity of the glass film directly determines the accuracy of pH value measurement, the probe 27 is directly exposed in dry air to easily evaporate water at the probe 27, the measurement accuracy and the service life of the probe 27 are seriously affected, at this time, after the probe 27 is lifted by the winding drum 24 in cooperation with the pull rope 25, the sliding table 21 is controlled by the driving unit to slide to the position right above the cleaning pool 34, then the floating ball 26 and the probe 27, the probe 27 is immersed in the protective liquid, so that the exposure of the probe 27 is reduced, and meanwhile, the probe 27 is soaked and cleaned, so that the accuracy of the next measurement of the probe 27 is ensured; the magnetic block 35 attracts the counterweight ring 32, so that the probe 27 and the floating ball 26 are completely immersed in the protective liquid, the floating ball 26 is sufficiently soaked and cleaned, and the mixed liquid remained on the surface of the floating ball 26 is prevented from flowing to the surface of the probe 27 along with the floating ball 26, so that the measurement accuracy of the probe 27 is further influenced; when the magnetic block 35 attracts the counterweight ring 32, the cylinder 37 is aligned with and inserted into the countersunk head portion 29, and due to the mutual matching of the cylinder 37 and the countersunk head portion 29, the protection liquid in the countersunk head portion 29 is extruded and then discharged through the water discharge hole 36, so that the water flow near the probe 27 is increased, the cleaning efficiency of the probe 27 is further increased, the cleaning of the probe 27 is ensured, and the detection precision of the probe 27 is increased.

The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.