Sodium hydrosulfite drying device

Abstract

The utility model discloses a sodium hydrosulfite drying device. The utility model relates to the technical field of sodium hydrosulfite production. The device comprises a drying kettle and a near infrared spectrum analyzer, a filtering assembly is arranged at the bottom of the drying kettle, a liquid outlet is formed in the bottom of the drying kettle, the liquid outlet is communicated with the mother liquid tank through a liquid outlet pipe, a sight glass is arranged on the liquid outlet pipe, and the near infrared spectrum analyzer is arranged on one side of the sight glass and used for detecting sodium hydrogen sulfite in the liquid outlet pipe; and the near infrared spectrum analyzer is connected with a control computer through an optical fiber. According to the utility model, turbid liquid in the drying kettle is filtered by using the filtering assembly, modeling is carried out by using a near infrared spectrum analyzer to identify light waves through the original sight glass on the liquid outlet pipe, and the concentration of sodium hydrogen sulfite in the liquid outlet pipe is monitored on line in real time after the spectrum of sodium hydrogen sulfite is identified; the sodium hydrogen sulfite in the pressure washing process in the sodium hydrosulfite drying process is monitored, so that the labor intensity is reduced, and the accuracy of the sodium hydrogen sulfite is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium hypochlorite production, in particular to a sodium hypochlorite drying device. Background Art

[0002] In the drying device of the insurance powder industry, sodium bisulfite is the key indicator of the washing process during drying, filtration and washing. At present, the industry measures the content of sodium bisulfite in the washing liquid by manual sampling and titration.

[0003] The sampling frequency for measuring sodium bisulfite is high, and someone is required on site to take samples, deliver samples, conduct tests, and provide data feedback. This is a large workload and causes data lags, which affects product quality. Utility Model Content

[0004] The purpose of the utility model is to provide a hydrosulfite drying device in view of the above-mentioned deficiencies in the prior art.

[0005] The utility model discloses a sodium hyposulfite drying device, comprising a drying kettle and a near-infrared spectrometer; a filter assembly is arranged at the bottom of the drying kettle, a liquid outlet is arranged at the bottom of the drying kettle, the liquid outlet is communicated with the mother liquid tank through a liquid outlet pipe, a sight glass is arranged on the liquid outlet pipe, the near-infrared spectrometer is arranged on one side of the sight glass, and is used for detecting the sodium bisulfite in the liquid outlet pipe; the near-infrared spectrometer is connected with a control computer through an optical fiber.

[0006] Furthermore, the filter assembly includes a rigid filter screen and a filter cloth arranged on the upper surface of the rigid filter screen.

[0007] Furthermore, the filter cloth is fixed to the rigid filter screen by bolts.

[0008] Furthermore, the rigid filter screen is fixed to the bottom of the drying kettle through a support frame.

[0009] Furthermore, the support frame is welded to the bottom of the drying kettle, and the rigid filter screen is fixed to the support frame by bolts.

[0010] Furthermore, the rigid filter screen is an iron screen.

[0011] Furthermore, the filter cloth has a mesh size of 260-290.

[0012] Furthermore, the filter cloth has a mesh size of 280.

[0013] Furthermore, the liquid outlet pipe is arranged close to the ground, and the near-infrared spectrometer is fixed to the ground by bolts.

[0014] The utility model utilizes a filtering component to filter the suspension in the drying kettle under the existing sodium hydrosulfite drying device, uses a near-infrared spectrometer to identify light waves for modeling through the original sight glass on the liquid outlet pipe, and monitors the sodium bisulfite concentration in the liquid outlet pipe in real time online after the sodium bisulfite spectrum is identified, monitors the sodium bisulfite in the pressure washing process in the sodium hydrosulfite drying process, reduces labor intensity, and improves the accuracy of the sodium bisulfite. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a hydrosulfite drying device.

[0016] 1. Drying kettle; 2. Near-infrared spectrometer; 3. Filter assembly; 31. Rigid filter screen; 32. Filter cloth; 4. Liquid outlet pipe; 5. Sight glass; 6. Support frame. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figure 1 As shown, a hydrosulfite drying device of the utility model comprises a drying kettle 1 and a near-infrared spectrometer 2; a filter assembly 3 is provided at the bottom of the drying kettle 1, a liquid outlet is provided at the bottom of the drying kettle 1, the liquid outlet is connected to the mother liquid tank through a liquid outlet pipe 4, a sight glass 5 is provided on the liquid outlet pipe 4, and the near-infrared spectrometer 2 is arranged on one side of the sight glass 5 for detecting the sodium bisulfite in the liquid outlet pipe 4; the near-infrared spectrometer 2 is connected to the control computer through an optical fiber.

[0019] The utility model utilizes a filter assembly 3 to filter the suspension in a drying kettle 1 under an existing sodium hydrosulfite drying device, uses a sight glass 5 on a liquid outlet pipe 4, uses a near-infrared spectrometer 2 to identify light waves for modeling, and monitors the sodium bisulfite concentration in the liquid outlet pipe 4 in real time online after the sodium bisulfite spectrum is identified, monitors the sodium bisulfite in the pressure washing process in the sodium hydrosulfite drying process, reduces labor intensity, and improves the accuracy of the sodium bisulfite.

[0020] There are many structures of the filter assembly 3. In this embodiment, the filter assembly 3 may include a rigid filter screen 31 and a filter cloth 32 disposed on the upper surface of the rigid filter screen 31. The filter cloth 32 may be fixed to the rigid filter screen 31 by bolts, so that the filter cloth 32 can be easily replaced.

[0021] The rigid filter screen 31 can be fixed to the bottom of the drying kettle 1 through the support frame 6. The support frame 31 is welded to the bottom of the drying kettle 2, and the rigid filter screen 31 is fixed to the support frame 6 by bolts, which is convenient for disassembly, cleaning and replacement. The rigid filter screen 31 can be an iron mesh, which plays a role in supporting the filter cloth 32. The filter cloth 32 can be 260-290 mesh, preferably, the filter cloth 32 is 280 mesh, to ensure that the liquid in the liquid outlet pipe 4 is clear liquid.

[0022] The liquid outlet pipe 4 can be arranged close to the ground, and the near-infrared spectrometer 2 can be fixed to the ground by bolts, without the need for additional pipelines or installation devices.

[0023] For matters not mentioned above, the prior art applies.

[0024] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the utility model. Those skilled in the art of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the utility model or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modification, equivalent replacement, improvement, etc. made to the above implementation methods based on the technical essence of the utility model should be included in the protection scope of the utility model.

Claims

1. A hydrosulfite drying device, characterized in that: The invention comprises a drying kettle and a near-infrared spectrometer; a filter assembly is arranged at the bottom of the drying kettle, a liquid outlet is arranged at the bottom of the drying kettle, the liquid outlet is connected with a mother liquid tank through a liquid outlet pipe, a sight glass is arranged on the liquid outlet pipe, the near-infrared spectrometer is arranged on one side of the sight glass, and is used for detecting the sodium bisulfite in the liquid outlet pipe; the near-infrared spectrometer is connected with a control computer through an optical fiber.

2. A hydrosulfite drying device as claimed in claim 1, characterized in that: The filter assembly includes a rigid filter screen and a filter cloth arranged on the upper surface of the rigid filter screen.

3. A hydrosulfite drying device as claimed in claim 2, characterized in that: The filter cloth is fixed on the rigid filter screen by bolts.

4. A hydrosulfite drying device as claimed in claim 2, characterized in that: The rigid filter screen is fixed to the bottom of the drying kettle through a supporting frame.

5. A hydrosulfite drying device as claimed in claim 4, characterized in that: The support frame is welded to the bottom of the drying kettle, and the rigid filter screen is fixed to the support frame by bolts.

6. A hydrosulfite drying device as claimed in claim 2, characterized in that: The rigid filter screen is an iron screen.

7. A hydrosulfite drying device as claimed in claim 2, characterized in that: The filter cloth has a mesh size of 260-290.

8. A hydrosulfite drying device as claimed in claim 7, characterized in that: The filter cloth has a mesh size of 280.

9. The hydrosulfur powder drying device according to claim 1, characterized in that: The liquid outlet pipe is arranged close to the ground, and the near-infrared spectrometer is fixed on the ground by bolts.

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