PH value online detection device for preparing iron oxide pigment

Abstract

The utility model discloses a PH value on-line detection device for preparing iron oxide pigment, which comprises a reaction kettle for preparing iron oxide pigment, the lower end part of the reaction kettle is in a hopper shape and is correspondingly provided with a liquid outlet pipe, and the side wall of the reaction kettle is also provided with a U-shaped detection pipe; one end of the detection pipe is mounted at the lower end part of the reaction kettle, the other end of the detection pipe is correspondingly mounted at the upper end part of the reaction kettle, the detection pipe forms a communicating pipe of the reaction kettle, and liquid in the reaction kettle correspondingly enters the detection pipe from the lower end part of the detection pipe. The detection box in the device is similar to a communicating vessel principle and is provided with the circulating pump, so that the detection box can be filled with liquid, the PH electrode plate can detect the PH value of the liquid in the detection box, then the PH value is obtained through the PH online detector, the PH value at the moment is the numerical value of the liquid in the reaction kettle, the PH value in the reaction kettle can be detected online in real time, and the detection efficiency is improved. The production adjustment of the reaction kettle is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of iron oxide pigment production, specifically to a PH value on -line detection device for preparing iron oxide pigment. BACKGROUND

[0002] In the prior art, iron oxide pigment is a kind of pigment with iron oxide as basic substance, which has good dispersibility, excellent light resistance and weather resistance and other characteristics.

[0003] In the prior art, when iron oxide pigment is prepared, the PH value of iron oxide liquid needs to be detected on line, and reagent needs to be added in the reaction kettle for control at all times, such as plus-minus adjustment.

[0004] The structure of the PH value on-line detection device in the prior art is usually directly arranged in the interior of the reaction kettle, and the detection head of the PH value on-line detection device is directly inserted into the reaction kettle for detection, but in the prior art, the detection head needs to be directly inserted into the innermost position of the reaction kettle to effectively detect the PH value, and most of the reaction kettles are internally provided with stirring mechanisms, stirring blades and other devices, which will inevitably conflict with the detection head, seriously affecting the detection efficiency and quality, and the production quality and efficiency of the reaction kettle.

[0005] For example, the "pH on-line detection device for iron oxide production" disclosed in the authorized announcement No.CN213580770U introduces the liquid of iron oxide into a single liquid storage tank for separate detection, which wastes the liquid of iron oxide on the one hand, and occupies more space on the other hand, and the distance of introduction is long and the volume of the liquid storage tank is large, which seriously affects the circulation of the liquid, and the detection efficiency and accuracy are greatly reduced.

[0006] Therefore, in order to solve the above problems, a PH value on-line detection device for preparing iron oxide pigment with reasonable structure and integrated with the reaction kettle is needed. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at the deficiencies in the prior art, and provides a PH value on-line detection device for preparing iron oxide pigment.

[0008] The utility model provides an on-line PH detection device for preparing iron oxide pigment, which comprises a reaction kettle for preparing iron oxide pigment, the lower end of the reaction kettle is provided in the form of a hopper, a liquid outlet pipe is installed at the lower end, and a U-shaped detection pipe is installed on the side wall of the reaction kettle, one end of the detection pipe is installed at the lower end of the reaction kettle, the other end is installed at the upper end of the reaction kettle, and the detection pipe constitutes a communication pipe of the reaction kettle; the liquid in the reaction kettle enters the detection pipe from the lower end of the detection pipe;

[0009] An electromagnetic valve and a circulating pump are installed at the upper end and the lower end of the detection pipe, and an expanded detection box is arranged at the middle part of the detection pipe, the detection box is a PH detection area, the space of the detection area is larger than the inner diameter of the detection pipe, a PH electrode is installed in the detection area of the detection box, and the PH electrode is connected to a PH on-line detection instrument;

[0010] The liquid in the reaction kettle flows into the detection box from the lower end of the detection pipe under the action of the circulating pump, the PH information is transmitted to the PH on-line detection instrument through the PH electrode in the detection box, the PH value is detected by the PH on-line detection instrument, and the liquid flows back to the reaction kettle through the circulating pump.

[0011] Further, an electromagnetic valve is installed at the bottom of the liquid outlet pipe, and the electromagnetic valve is of the same type as the electromagnetic valves installed at the upper end and the lower end of the detection pipe.

[0012] Further, the detection pipe is arranged in a detachable structure, a rotary joint is installed at the upper end and the lower end of the reaction kettle, and the upper end and the lower end of the detection pipe are detachably installed on the rotary joints, so that the detection pipe can be detached.

[0013] Further, the detection box at the middle part of the detection pipe is expanded towards the side wall of the reaction kettle, and the detection box is arranged close to the reaction kettle.

[0014] Further, two fixing plates are arranged on the side wall of the reaction kettle in the upward and downward directions corresponding to the position of the detection box, and the detection box is inserted between the two fixing plates, and the detection box is detachably installed through the two fixing plates.

[0015] Further, the end of the fixing plate is provided with a fixing groove extending inward, and the upper end and the lower end of the detection box are provided with threaded rods, the threaded rods enter the fixing groove from the slot of the fixing groove when the detection box is installed, and the detection box is fixed between the two fixing plates through locking nuts.

[0016] Further, the PH electrode is inserted into the detection box in the transverse direction, and the detection box is filled with liquid.

[0017] The utility model discloses a following beneficial effect has:

[0018] 1) the detection box in the device is similar to the principle of communicating vessel, and is provided with a circulating pump, can make the detection box fill with liquid, and PH electrode piece can detect the PH value of the liquid in the detection box, then obtains the PH value through the PH on -line detection instrument, and the PH value at this time is the value of the liquid in the reaction kettle, can realize real -time on -line detection the PH value in the reaction kettle, and the production adjustment of the reaction kettle is convenient;

[0019] 2) the upper and lower ends of the detection tube in the device are provided with electromagnetic valves and circulating pumps, the circulating pump is used for circulating the liquid, and the liquid is completely backflowed to the reaction kettle and does not waste the iron oxide mixed liquid, and the design of the electromagnetic valves at the upper and lower ends can prevent the liquid from entering the detection tube by closing the electromagnetic valves at the upper and lower ends, so that the PH value detection is not needed, and the structure is reasonably arranged;

[0020] 3) the structure design of the detection tube in the device is detachable, first, the upper and lower ends of the detection tube are installed through the rotary joint of the pipeline, so that the installation and dismounting are very convenient through the rotary joint, and the design of the detection box expands the detection box to the side wall of the reaction kettle, utilizes the blank space, effectively reduces the space utilization, and the structure is more reasonable.

[0021] 4) the upper and lower fixing plates are further arranged on the corresponding side wall of the reaction kettle, the design of the fixing plate can be used to support and fix the detection box, so that the design of the detection box is more stable and reliable, the detection box does not shake, and the structure is reasonable;

[0022] 5) the detection box of the device is also arranged in a detachable structure, the fixing groove with an opening is arranged on the fixing plate at the upper and lower positions, and the threaded rod is arranged on the detection box, when installing, the threaded rod enters the fixing groove from the slot of the fixing groove, then is locked through the lock nut, so that the detection box can be fixed between the upper and lower fixing plates, and the detection box is also very convenient to dismount, the structure is clever, and the structure is stable and reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structural drawing of the utility model;

[0024] Figure 2 It is the fixing plate position drawing in the utility model;

[0025] Figure 3 It is Figure 2 A-A view in the utility model;

[0026] The reaction kettle 1, the liquid outlet pipe 2, the detection pipe 3, the electromagnetic valve 4, the circulating pump 5, the detection box 6, the detection area 7, the PH electrode piece 8, the PH online detector 9, the rotary joint 10, the fixed plate 11, the fixed groove 12, the threaded rod 13 and the locking nut 14. DETAILED DESCRIPTION

[0027] The utility model will be further clarified in combination with the drawings and specific embodiments, and the embodiments are implemented on the premise of the technical scheme of the utility model, and it should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model.

[0028] As shown in Figure 1 , Figure 2 and Figure 3 , a kind of PH value on-line detection device for preparing iron oxide pigment, including the reaction kettle 1 for preparing iron oxide pigment, the lower end of the reaction kettle 1 is arranged as hopper, and lower end is correspondingly installed with liquid outlet pipe 2, and the sidewall of reaction kettle 1 is also installed with U-shaped detection pipe 3, one end of the detection pipe 3 is installed in the lower end of reaction kettle 1, the other end is correspondingly installed in the upper end of reaction kettle 1, and the detection pipe 3 constitutes the communicating pipe of reaction kettle 1, and the liquid in reaction kettle 1 is correspondingly entered into detection pipe 3 from the lower end of detection pipe 3;

[0029] The upper end and the lower end of detection pipe 3 are correspondingly installed with electromagnetic valve 4 and correspondingly installed with circulating pump 5, and the middle position of detection pipe 3 is provided with the detection box 6 of expansion, and the detection area 7 of PH value is in the detection box 6, the space of detection area 7 is greater than the inner diameter of detection pipe 3, and the PH electrode piece 8 that extends into detection area 7 is also installed on detection box 6, and the PH electrode piece 8 is correspondingly connected with PH online detector 9;

[0030] The liquid in reaction kettle 1 flows upwards into detection box 6 from the lower end of detection pipe 3 under the action of circulating pump 5, and the detection information is transmitted to PH online detector 9 by PH electrode piece 8 in detection box 6, and the PH value is detected by PH online detector 9, and the liquid is returned to reaction kettle 1 by circulating pump 5 again.

[0031] The bottom of liquid outlet pipe 2 is also installed with electromagnetic valve 4, and the electromagnetic valve 4 is the same type as the electromagnetic valve 4 on the upper end and the lower end of detection pipe 3.

[0032] Detection pipe 3 is arranged as detachable structure, and the upper end and the lower end of reaction kettle 1 are correspondingly installed with rotary joint 10, and the upper end and the lower end of detection pipe 3 are correspondingly detachably installed on rotary joint 10, so that detection pipe 3 is detachable.

[0033] The detection box 6 in the middle of detection pipe 3 expands to the sidewall direction of reaction kettle 1, and detection box 6 is arranged close to reaction kettle 1.

[0034] The side wall of the reaction kettle 1 is further provided with a fixing plate 11 corresponding to the position of the detection box 6 in the upward and downward directions, and the detection box 6 corresponds to extend into the two fixing plates 11, and the detection box 6 is detachably installed through the two fixing plates 11.

[0035] The end of the fixing plate 11 is provided with a fixed groove 12 extending to the inside, and the upper end and the lower end of the detection box 6 are correspondingly provided with a threaded rod 13, and when the detection box 6 is installed, the threaded rod 13 enters the fixed groove 12 from the slot of the fixed groove 12, and is locked by a lock nut 14, so as to fix the detection box 6 between the two fixing plates 11.

[0036] The PH electrode sheet 8 is inserted into the detection box 6 transversely, and the detection box 6 is ensured to be filled with liquid.

[0037] The specific working process and working principle of the device are as follows: when the reaction kettle is preparing the iron oxide pigment, the mixed liquid of the iron oxide pigment is stirred in the reaction kettle, and at this time the electromagnetic valves at the upper end and the lower end of the detection tube are opened, and the circulating pumps at the upper end and the lower end are opened at the same time to draw the liquid in the reaction kettle into the detection tube, the liquid is filled in the detection box through the detection tube and finally flows back to the reaction kettle, which does not affect the preparation of the iron oxide itself.

[0038] After the detection box is filled with liquid, the PH electrode sheet can detect the PH value of the liquid in the detection box, and then the PH value is obtained through the PH online detector, and the PH value at this time is the value of the liquid in the reaction kettle, which can realize real-time online detection of the PH value in the reaction kettle and facilitate the production adjustment of the reaction kettle.

[0039] And the upper and lower ends of the detection tube are provided with electromagnetic valves and circulating pumps, the circulating pump is used for circulating the liquid, and the liquid is completely returned to the reaction kettle without wasting the mixed liquid of the iron oxide; and the design of the electromagnetic valves at the upper and lower ends can prevent the liquid from entering the detection tube by closing the electromagnetic valves at the upper and lower ends, so that the PH value detection is not needed at this time, and the structure is reasonable.

[0040] In addition, the structure design of the detection tube in the device is detachable, first, the upper and lower ends of the detection tube are installed through the rotary joint of the pipeline, so that the installation and disassembly can be directly realized through the rotary joint, which is very convenient.

[0041] The design of the detection box extends to the side wall of the reaction kettle, which can effectively reduce the space utilization and is more reasonable in structure.

[0042] And the corresponding side wall of the reactor is also provided with upper and lower fixed plates, which can be used to support and fix the detection box, so that the design of the detection box is more stable and reliable, and the detection box will not shake or the like.

[0043] And the detection tube in the device can be detached, so the middle detection box is also correspondingly provided with a detachable structure, the fixed plates at the upper and lower positions are provided with open fixed grooves, and the detection box is provided with corresponding threaded rods, during specific installation, the threaded rods enter the fixed grooves from the groove openings of the fixed grooves, and then are locked by lock nuts, so that the detection box can be fixed between the upper and lower fixed plates, and is very convenient to detach, the structure is cleverly arranged, and is stable and reasonable.

[0044] The above specific embodiment is only a preferred embodiment of the present application, and is not used to limit the implementation and the scope of claims of the present application, and equivalent changes and modifications made according to the patent protection range of the present application should be included in the patent application range of the present application.

Claims

1. A device for on-line pH detection for preparing iron oxide pigments, characterized in that: The utility model provides a reaction kettle (1) for preparing iron oxide pigment, the lower end of the reaction kettle (1) is arranged as a hopper, a liquid outlet pipe (2) is installed at the lower end, a U-shaped detection tube (3) is also installed on the side wall of the reaction kettle (1), one end of the detection tube (3) is installed at the lower end of the reaction kettle (1), the other end is installed at the upper end of the reaction kettle (1), the detection tube (3) constitutes a communication pipe of the reaction kettle (1), and the liquid in the reaction kettle (1) enters the detection tube (3) from the lower end of the detection tube (3); The upper end and the lower end of the detection tube (3) are respectively provided with an electromagnetic valve (4) and a circulating pump (5), and an expanded detection box (6) is arranged at the middle part of the detection tube (3), the detection box (6) is a PH detection area (7), the space of the detection area (7) is larger than the inner diameter of the detection tube (3), and a PH electrode (8) is arranged in the detection area (7) of the detection box (6), the PH electrode (8) is connected with a PH on-line detector (9). The liquid in the reaction kettle (1) flows upwards into the detection box (6) under the action of the circulating pump (5), the PH electrode (8) in the detection box (6) transmits the detection information to the PH on-line detector (9), the PH value is detected by the PH on-line detector (9), and the liquid flows back to the reaction kettle (1) through the circulating pump (5).

2. The PH value on-line detection device for preparing iron oxide pigments according to claim 1, characterized in that: The bottom of the liquid outlet pipe (2) is also provided with an electromagnetic valve (4), which is the same type as the electromagnetic valves (4) at the upper end and the lower end of the detection tube (3).

3. The PH value on-line detection device for preparing iron oxide pigments according to claim 1, characterized in that: The detection tube (3) is detachable, the upper end and the lower end of the reaction kettle (1) are respectively provided with a rotary joint (10), and the upper end and the lower end of the detection tube (3) are detachably connected to the rotary joints (10).

4. The PH value on-line detection device for preparing iron oxide pigments according to claim 3, characterized in that: The detection box (6) at the middle part of the detection tube (3) extends towards the side wall of the reaction kettle (1), and the detection box (6) is close to the reaction kettle (1).

5. The PH value on-line detection device for preparing iron oxide pigments according to claim 4, characterized in that: The side wall of the reaction kettle (1) is also provided with two fixed plates (11) in the upper and lower directions corresponding to the position of the detection box (6), and the detection box (6) extends into the two fixed plates (11).

6. The PH value on-line detection device for preparing iron oxide pigments according to claim 5, characterized in that: The end of the fixed plate (11) is provided with a fixed groove (12) extending inwards, and the upper end and the lower end of the detection box (6) are respectively provided with a threaded rod (13), when the detection box (6) is installed, the threaded rod (13) enters the fixed groove (12) from the slot of the fixed groove (12), and is locked by a locking nut (14), so that the detection box (6) is fixed between the two fixed plates (11).

7. The PH value on-line detection device for preparing iron oxide pigments according to claim 1, characterized in that: The PH electrode (8) is inserted into the detection box (6) transversely, and the detection box (6) is filled with liquid.

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