An automatic determination device for phosphorus content in the process of preparing iron phosphate

Abstract

The utility model discloses an automatic determination device for phosphorus content in the process of preparing iron phosphate, including a guide rail, a determination box and a controller. Three liquid adding mechanisms, a capping mechanism, a clamping mechanism, a flipping and shaking mechanism and a colorimetric device are sequentially arranged in the determination box along the guide rail from left to right; the controller realizes precise control of the guide rail, the liquid adding mechanism, the capping mechanism, the clamping mechanism, the flipping and shaking mechanism and the colorimetric device, so that the entire determination process is automated. This not only improves work efficiency, but also reduces errors caused by human operation, ensuring the accuracy of the determination results. The liquid adding mechanism in the utility model is equipped with an electric valve and a flow meter, which can accurately control the amount of liquid added, avoiding errors that may be caused by manual liquid addition; since the entire determination process is automated, the operator only needs to place the sample to be tested on the sample rack and set the relevant parameters, and the device can automatically complete the determination work.

Description

Technical Field

[0001] The utility model relates to the technical field of iron phosphate content determination, in particular to an automatic determination device for phosphorus content in a process for preparing iron phosphate using disodium hydrogen phosphate dodecahydrate as a raw material. Background Art

[0002] The preparation of ferric phosphate is to synthesize ferric phosphate with disodium hydrogen phosphate dodecahydrate as raw material. In this process flow, it is necessary to accurately measure the content of the raw materials to determine the feed ratio for the synthesis of ferric phosphate. The performance index of the finished ferric phosphate product requires that the iron-phosphorus ratio is within a certain range. In order to obtain the finished ferric phosphate product that meets the iron-phosphorus ratio requirements, the raw materials need to be measured during the synthesis process. Among the existing detection methods, the content determination of disodium hydrogen phosphate dodecahydrate adopts the GB / T1263-2006 potentiometric titration method, which is suitable for the determination of high-content pure products. The disodium hydrogen phosphate dodecahydrate used in the process of preparing ferric phosphate with disodium hydrogen phosphate dodecahydrate as raw material is a production by-product, and its purity is difficult to meet the requirements of the potentiometric titration method. There may be other interferences that affect the determination, and in the actual ferric phosphate preparation process, disodium hydrogen phosphate dodecahydrate needs to be prepared into an aqueous solution of a certain concentration as a raw material for feeding reaction. The existing method cannot accurately measure the raw materials, which will affect the iron-phosphorus ratio of the final product. Although manual operation can also be used to determine the phosphorus content, manual operation is labor-intensive, inefficient, and difficult to eliminate the influence of human factors, resulting in low accuracy of the results. Therefore, it is necessary to develop a device for determining the phosphorus content in the process of preparing iron phosphate to solve the current problems.

[0003] The utility model patent with patent publication number CN215004961U discloses a colorimetric device for detecting phosphorus content. The colorimetric cell is connected to a colorimetric agent delivery structure. The colorimetric agent delivery structure includes a colorimetric agent receiving tank. An electromagnetic valve is installed on the colorimetric agent receiving tank. The colorimetric agent receiving tank is evacuated. The electromagnetic valve controls the liquid output of the liquid outlet pipe of the colorimetric agent receiving tank. A photoelectric detection structure is provided on the outside of the colorimetric cell.

[0004] However, this patent is only applicable to the determination of total phosphorus content in water quality, and this patent can only detect one sample at a time, with low detection efficiency, and it is difficult to meet the requirements of simultaneous detection of different samples. In the process of preparing ferric phosphate using disodium hydrogen phosphate dodecahydrate as raw material, the detection of phosphorus content is the detection of positive phosphorus content, which can be directly measured without digestion. The phosphorus content in the raw material, finished product and mother liquor varies greatly. In order to ensure the accuracy of the measurement results, the phosphorus content in the sample needs to be diluted to the linear range. Utility Model Content

[0005] The utility model aims to provide an automatic determination device for phosphorus content in a process of preparing ferric phosphate using disodium hydrogen phosphate dodecahydrate as a raw material, so as to solve the problems of heavy workload, time consumption, low efficiency, low precision and errors caused by human operation in manual determination.

[0006] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:

[0007] An automatic determination device for phosphorus content in a process of preparing ferric phosphate comprises a guide rail, a determination box and a controller, wherein the guide rail is arranged at the bottom of the determination box and penetrates the determination box and extends to the outside of the determination box, a sample rack for placing a colorimetric tube is arranged on the guide rail, and the sample rack is slidably connected to the guide rail, and three liquid adding mechanisms, a capping mechanism, a clamping mechanism, a flipping and shaking mechanism and a colorimetric device are arranged in sequence from left to right in the determination box along the guide rail direction; the three liquid adding mechanisms are respectively connected to a sealed container, an electric valve and a flow meter are arranged at the liquid outlet of the liquid adding mechanism, a displacement sensor is arranged on the guide rail, a liquid level sensor is arranged on the sample rack, and the guide rail, the flow meter, the electric valve, the positioning sensor, the clamping mechanism and the colorimetric device are respectively connected to the controller signal.

[0008] The guide rail includes a guide rail base, a lead screw and a stepper motor, one end of the guide rail base is provided with a bearing seat, the other end of the guide rail base is provided with a stepper motor, one end of the lead screw is connected to the bearing seat, the other end of the lead screw is connected to the output shaft of the stepper motor, the sample holder is slidably connected to the lead screw, and the stepper motor is connected to the controller signal;

[0009] The sample rack can reciprocate on the guide rail under the control of the control mechanism, stop when moving to the liquid adding mechanism, the capping mechanism, the clamping mechanism and the colorimetric mechanism, and automatically reset to the starting position after completing the liquid adding, capping, shaking and colorimetric tube ...

[0010] The capping mechanism comprises a cap storage cylinder and a lifting mechanism, wherein the cap storage cylinder is a vertically arranged hollow cylinder, a baffle is arranged at the bottom of the cap storage cylinder, the baffle is provided with an automatic opening and closing component, a cap clamp is arranged at the bottom of the baffle, the lifting mechanism is arranged at one side of the cap storage cylinder, the cap clamp is fixedly connected to the bottom of the lifting mechanism, and the automatic opening and closing component, the lifting mechanism and the cap clamp are respectively connected to the controller signal;

[0011] The caps of the colorimetric tubes are stored in the cap storage cylinder in sequence. After the colorimetric tubes are added with the colorimetric solution, they are moved to the bottom of the capping mechanism. After the baffle at the bottom of the cap storage cylinder is opened, a portion of the cap leaks out. After the lifting mechanism rises, the cap clamp is controlled to clamp the bottle cap. After clamping the bottle cap, the lifting mechanism moves downward to take out the bottle cap. After taking out the bottle cap, the automatic opening and closing component is controlled to close the baffle. The lifting mechanism continues to move downward to complete the capping of the colorimetric tube. After the capping, the lifting mechanism rises to the starting position. This reciprocating process completes the capping operation of the colorimetric tube.

[0012] The baffle is composed of two semicircular plates, the automatic opening and closing component is an electric hinge, the semicircular plates are hinged to the bottom of the cylinder through the electric hinge, and the electric hinge is connected to the controller signal;

[0013] The lifting mechanism is an electric cylinder, the telescopic rod of the electric cylinder is fixedly connected to the cover clamp, and the electric cylinder is connected to the controller signal;

[0014] The fixture mechanism includes a fixture base, a mechanical arm and a colorimetric tube clamp, wherein the mechanical arm is fixedly connected to the measuring box through the fixture base, a colorimetric tube clamp is arranged on the top of the mechanical arm, and the mechanical arm and the colorimetric tube clamp are respectively connected to the controller signal;

[0015] The flipping and shaking mechanism comprises two flipping bases, a flipping rod and a colorimetric tube fixing frame, one end of the flipping base is connected to the measuring box, the other end of the flipping base is provided with a bearing sleeve, the two ends of the flipping rod are respectively rotatably connected to the flipping base through the bearing sleeve, one end of the flipping rod is provided with a motor, the output shaft of the motor is fixedly connected to the flipping rod; the colorimetric tube fixing frame is fixedly connected to the flipping rod;

[0016] After the sample rack is covered, it continues to move forward on the guide rail. After the robotic arm puts the colorimetric tubes on the colorimetric tube rack into the colorimetric tube fixing rack one by one, the motor is started to rotate forward half a circle and then immediately reverse half a circle. After moving back and forth for 30 seconds, it stops and the robotic arm puts the mixed sample back into the sample rack on the guide rail.

[0017] The colorimetric device includes a light source capable of emitting a wavelength of 700nm, a photoelectric converter and a recording system. One side of the guide rail is a light source emitting a wavelength of 700nm, and the other side is a photoelectric converter connected to a data recording system. The sample rack moves to the colorimetric device along with the guide rail, triggering the colorimetric device to start working, recording and storing the reading of the first sample, and recording the reading of each sample in the colorimetric tube in turn under the movement of the stepping device. After the reading is completed, the guide rail continues to move forward to the travel limit device, and then the guide rail returns to the initial position to complete the detection of the batch samples, and the results of the samples are checked through the controller.

[0018] Beneficial effects of the utility model:

[0019] 1. In the utility model, the processed sample is added into the colorimetric tube and placed on the sample rack in turn. The liquid level sensor on the sample rack detects the liquid level height in the colorimetric tube and transmits it to the controller. The controller controls the guide rail to move rightward. The displacement sensor monitors the movement position of the sample rack in real time. When the sample rack moves to the first liquid adding device, the controller controls the electric valve of the first liquid adding device to open and add water to the colorimetric tube. The flow meter monitors the amount of water added in real time and calculates the dilution multiple. When the total volume of the liquid in the colorimetric tube reaches the set value, the controller controls the electric valve to close and controls the guide rail to continue to move rightward. When the sample rack moves to the second and third liquid adding devices When the sample rack moves to the cover mechanism, the controller controls the cover mechanism to cover the colorimetric tube; the sample rack continues to move to the clamp mechanism, and the controller controls the clamp mechanism to clamp each colorimetric tube to the flipping and shaking mechanism in sequence. The controller controls the flipping and shaking mechanism to flip and shake the colorimetric tube for 30 seconds for color development. After the color development is completed, the clamp mechanism puts the colorimetric tube back to the sample rack, and the colorimetric tube enters the colorimetric device along the guide rail. The instrument automatically records the readings and calculates the phosphorus content in the corresponding sample of each colorimetric tube according to the dilution multiple.

[0020] 2. In the present invention, the controller realizes precise control of the guide rail, liquid adding mechanism, capping mechanism, clamping mechanism, flipping and shaking mechanism and colorimetric device, so that the whole measuring process is automated. This not only improves the work efficiency, but also reduces the error of manual operation and ensures the accuracy of the measurement results. The liquid adding mechanism in the present invention is equipped with an electric valve and a flow meter, which can accurately control the amount of liquid added and avoid the error that may be caused by manual liquid addition; since the whole measuring process is automated, the operator only needs to place the sample to be tested on the sample rack and set the relevant parameters, and the device can automatically complete the measurement. This greatly reduces the difficulty of operation and the labor intensity of the operator.

[0021] 3. This utility model has the advantages of high automation, precise control, optimized process, enhanced safety, easy maintenance and efficient data management, and has the beneficial effects of high automation, high measurement accuracy, simple operation, high safety and strong adaptability, and can significantly improve the efficiency and quality of phosphorus content determination in the process of iron phosphate preparation. It significantly improves the efficiency and accuracy of phosphorus content determination in iron phosphate, which is an important progress in laboratory automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a schematic diagram of the structure of an automatic determination device for phosphorus content in the process of preparing iron phosphate.

[0023] Figure 2 It is a schematic diagram of the structure of the liquid adding mechanism of the utility model.

[0024] Figure 3 It is a schematic diagram of the structure of the capping mechanism of the utility model.

[0025] Among them: 1. Guide rail; 2. Measurement box; 3. Liquid adding mechanism; 4. Covering mechanism; 5. Clamp mechanism; 6. Flipping and shaking mechanism; 7. Colorimetric device; 31. Electric valve; 32. Flow meter; 33. Sealed container; 41. Cover storage cylinder; 42. Lifting mechanism; 43. Baffle; 44. Cover clamp; 51. Clamp base; 52. Robotic arm; 53. Colorimetric tube clamp; 61. Flipping base; 62. Flip rod; 63. Colorimetric tube fixing frame. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0027] Example 1

[0028] This embodiment provides an automatic determination device for phosphorus content in the process of preparing iron phosphate. Figure 1 As shown, it includes a guide rail 1, a measuring box 2 and a controller. The guide rail 1 is arranged at the bottom of the measuring box 2 and passes through the measuring box 2 and extends to the outside of the measuring box 2. A sample rack for placing colorimetric tubes is arranged on the guide rail 1. The sample rack is slidably connected to the guide rail 1. Three liquid adding mechanisms 3, a capping mechanism 4, a clamping mechanism 5, a flipping and shaking mechanism 6 and a colorimetric device 7 are arranged in sequence from left to right in the measuring box 2 along the direction of the guide rail 1; Figure 2 As shown, the three liquid adding mechanisms 3 are respectively connected to the sealed container 33, the liquid outlet of the liquid adding mechanism 3 is provided with an electric valve 31 and a flow meter 32, the guide rail 1 is provided with a displacement sensor, the sample rack is provided with a liquid level sensor, the guide rail 1, the flow meter 32, the electric valve 31, the positioning sensor, the clamp mechanism 5 and the colorimetric device 7 are respectively connected to the controller signal.

[0029] In this embodiment, the processed sample is added into a colorimetric tube and placed on the sample rack in turn. The liquid level sensor on the sample rack detects the liquid level height in the colorimetric tube and transmits it to the controller. The controller controls the guide rail 1 to move rightward, and the displacement sensor monitors the movement position of the sample rack in real time. When the sample rack moves to the first liquid adding device, the controller controls the electric valve 31 of the first liquid adding device to open and add water to the colorimetric tube. The flow meter 32 monitors the amount of water added in real time and calculates the dilution multiple. When the total volume of the liquid in the colorimetric tube reaches 5mL, the controller controls the electric valve 31 to close and controls the guide rail 1 to continue to move rightward. When the sample rack moves to the second and third liquid adding mechanisms 3, the flow meter 32 monitors the amount of water added in real time and calculates the dilution multiple. The electric valve 31 and the flowmeter 32 are separately controlled to add 1 mL of the colorimetric solution A ascorbic acid solution and the molybdate solution B into the colorimetric tube; when the sample rack moves to the capping mechanism 4, the controller controls the capping mechanism 4 to cover the colorimetric tube; the sample rack continues to move to the clamping mechanism 5, and the controller controls the clamping mechanism 5 to sequentially take each colorimetric tube clamp 53 to the flipping and shaking mechanism 6, and the controller controls the flipping and shaking mechanism 6 to flip and shake the colorimetric tube for 30 seconds for color development. After the color development is completed, the clamping mechanism 5 puts the colorimetric tube back to the sample rack, and the colorimetric tube enters the colorimetric device 7 along the guide rail 1. The instrument automatically records the readings and calculates the phosphorus content in the corresponding sample of each colorimetric tube according to the dilution multiple.

[0030] Example 2

[0031] Compared with Example 1, the present embodiment is different in that, in the present embodiment, the guide rail 1 includes a guide rail 1 base, a lead screw and a stepper motor, one end of the guide rail 1 base is provided with a bearing seat, the other end of the guide rail 1 base is provided with a stepper motor, one end of the lead screw is connected to the bearing seat, the other end of the lead screw is connected to the output shaft of the stepper motor, the sample holder is slidably connected to the lead screw, and the stepper motor is connected to the controller signal; the remaining structure is the same as that of Example 1.

[0032] In this embodiment, the sample rack can reciprocate on the guide rail 1 under the control of the control mechanism, stop when moving to the liquid adding mechanism 3, the capping mechanism 4, the clamping mechanism 5 and the colorimetric mechanism, and automatically reset to the starting position after completing the liquid adding, capping, shaking and colorimetric tube ...

[0033] Example 3

[0034] The difference between this embodiment and embodiment 1 is that, in this embodiment, Figure 3As shown, the capping mechanism 4 includes a cap storage cylinder 41 and a lifting mechanism 42, the cap storage cylinder 41 is a vertically arranged hollow cylinder, a baffle 43 is arranged at the bottom of the cap storage cylinder 41, the baffle 43 is composed of two semicircular plates, the semicircular plates are respectively hinged to the bottom of the cylinder through electric hinges, a cap clamp 44 is arranged at the bottom of the baffle 43, the lifting mechanism 42 is arranged on one side of the cap storage cylinder 41, the lifting mechanism 42 is an electric cylinder, the telescopic rod of the electric cylinder is fixedly connected to the cap clamp 44, the electric hinge of the baffle 43, the cap clamp 44 and the electric cylinder are respectively connected to the controller signal; the rest of the structure is the same as that of Example 1.

[0035] In this embodiment, the caps of the colorimetric tubes are stored in the cap storage cylinder 41 in sequence. After the colorimetric tubes are added with the colorimetric solution, they are moved to the bottom of the capping mechanism 4. After the baffle 43 at the bottom of the cap storage cylinder 41 is opened, a portion of the cap leaks out. After the lifting mechanism 42 rises, the cap clamp 44 is controlled to clamp the bottle cap. After clamping the bottle cap, the lifting mechanism 42 moves downward to take out the bottle cap. After taking out the bottle cap, the automatic opening and closing assembly is controlled to close the baffle 43. The lifting mechanism 42 continues to move downward to complete the capping of the colorimetric tube. After the capping, the lifting mechanism 42 rises to the starting position. This reciprocating process completes the capping operation of the colorimetric tube.

[0036] Example 4

[0037] Compared with Example 1, the present embodiment is different in that, in the present embodiment, the clamp mechanism 5 includes a clamp base 51, a mechanical arm 52 and a colorimetric tube clamp 53, the mechanical arm 52 is fixedly connected to the measuring box 2 through the clamp base 51, the top of the mechanical arm 52 is provided with a colorimetric tube clamp 53, the mechanical arm 52 and the colorimetric tube clamp 53 are respectively connected with the controller signal; the flipping and shaking mechanism 6 includes two flipping bases 61, a flip rod 62 and a colorimetric tube fixing frame 63, one end of the flipping base 61 is connected to the measuring box 2, the other end of the flipping base 61 is provided with a bearing sleeve, the two ends of the flip rod 62 are respectively rotatably connected to the flipping base 61 through the bearing sleeve, one end of the flipping rod 62 is provided with a motor, the output shaft of the motor is fixedly connected to the flip rod 62; the colorimetric tube fixing frame 63 is fixedly connected to the flip rod 62; the remaining structure is the same as that of Example 1.

[0038] In this embodiment, after the sample rack is covered, it continues to move forward on the guide rail 1. After the robotic arm 52 places the colorimetric tubes on the colorimetric tube rack into the colorimetric tube fixing rack 63 one by one, the motor is started to rotate forward half a circle and then immediately reverse half a circle. After moving back and forth for 30 seconds, it stops. The robotic arm 52 puts the mixed sample back into the sample rack on the guide rail 1.

[0039] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An automatic determination device for phosphorus content in the process of preparing ferric phosphate, characterized in that: The invention comprises a guide rail (1), a measuring box (2) and a controller. The guide rail (1) is arranged at the bottom of the measuring box (2) and passes through the measuring box (2) to extend to the outside of the measuring box (2). A sample rack for placing a colorimetric tube is arranged on the guide rail (1). The sample rack is slidably connected to the guide rail (1). Three liquid adding mechanisms (3), a capping mechanism (4), a clamping mechanism (5), a flipping and shaking mechanism (6) and a colorimetric device (7) are arranged in sequence from left to right in the measuring box (2) along the direction of the guide rail (1). The three liquid adding mechanisms (3) are respectively connected to a sealed container (33). The liquid outlet of the liquid adding mechanism (3) is provided with an electric valve (31) and a flow meter (32). A displacement sensor is arranged on the guide rail (1). A liquid level sensor is arranged on the sample rack. The guide rail (1), the flow meter (32), the electric valve (31), the positioning sensor, the clamping mechanism (5) and the colorimetric device (7) are respectively connected to the controller signal.

2. The automatic determination device for phosphorus content in the process of preparing ferric phosphate according to claim 1, characterized in that: The guide rail (1) comprises a guide rail (1) base, a lead screw and a stepper motor; a bearing seat is arranged at one end of the guide rail (1) base, a stepper motor is arranged at the other end of the guide rail (1) base, one end of the lead screw is connected to the bearing seat, the other end of the lead screw is connected to the output shaft of the stepper motor, the sample holder is slidably connected to the lead screw, and the stepper motor is connected to a controller signal.

3. The automatic determination device for phosphorus content in the process of preparing ferric phosphate according to claim 1, characterized in that: The capping mechanism (4) comprises a cap storage cylinder (41) and a lifting mechanism (42); the cap storage cylinder (41) is a vertically arranged hollow cylinder; a baffle (43) is arranged at the bottom of the cap storage cylinder (41); the baffle (43) is provided with an automatic opening and closing component; a cap clamp (44) is arranged at the bottom of the baffle (43); the lifting mechanism (42) is arranged on one side of the cap storage cylinder (41); the cap clamp (44) is fixedly connected to the bottom of the lifting mechanism (42); and the automatic opening and closing component, the lifting mechanism (42) and the cap clamp (44) are respectively connected to controller signals.

4. The automatic determination device for phosphorus content in the process of preparing ferric phosphate according to claim 3, characterized in that: The baffle (43) is composed of two semicircular plates, the automatic opening and closing component is an electric hinge, the semicircular plates are respectively hinged to the bottom of the cylinder through the electric hinge, and the electric hinge is connected to the controller signal.

5. The automatic determination device for phosphorus content in the process of preparing ferric phosphate according to claim 3, characterized in that: The lifting mechanism (42) is an electric cylinder, the telescopic rod of the electric cylinder is fixedly connected to the cover clamp (44), and the electric cylinder is connected to the controller signal.

6. The automatic determination device for phosphorus content in the process of preparing ferric phosphate according to claim 1, characterized in that: The clamp mechanism (5) comprises a clamp base (51), a mechanical arm (52) and a colorimetric tube clamp (53); the mechanical arm (52) is fixedly connected to the measuring box (2) via the clamp base (51); a colorimetric tube clamp (53) is arranged on the top of the mechanical arm (52); and the mechanical arm (52) and the colorimetric tube clamp (53) are respectively connected to controller signals.

7. The automatic determination device for phosphorus content in the process of preparing ferric phosphate according to claim 1, characterized in that: The flipping and shaking mechanism (6) comprises two flipping bases (61), a flipping rod (62) and a colorimetric tube fixing frame (63); one end of the flipping base (61) is connected to the measuring box (2); the other end of the flipping base (61) is provided with a bearing sleeve; the two ends of the flipping rod (62) are rotatably connected to the flipping base (61) via the bearing sleeves; one end of the flipping rod (62) is provided with a motor; the output shaft of the motor is fixedly connected to the flipping rod (62); and the colorimetric tube fixing frame (63) is fixedly connected to the flipping rod (62).

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