A hydrometer for use in a two-effect concentration system

Abstract

The utility model introduces a kind of two effect concentration system is with measuring specific gravity device, including liquid pump, liquid suction pipe, liquid discharge pipe, overflow cylinder, measuring cylinder, liquid discharge return pipe, measuring liquid return pipe and specific gravity meter;Liquid pump import is connected with two effect evaporator bottom by liquid suction pipe, one end of liquid discharge pipe is connected with liquid pump export, and other end is inserted into overflow cylinder;Overflow cylinder is arranged in measuring cylinder, and overflow cylinder bottom is connected with one end of liquid discharge return pipe, one end of measuring liquid return pipe is connected with measuring cylinder bottom, and other end is introduced into two effect evaporator;Specific gravity meter is arranged in measuring cylinder outside overflow cylinder.The utility model's measuring specific gravity device completes sampling and specific gravity determination under the premise of not influencing two effect evaporator work, and structure is simple, easy to operate, solution can be recycled, avoid material waste, ensure the continuity and accuracy of process monitoring.

Description

Technical Field

[0001] This utility model relates to the field of evaporation and concentration technology in tungsten and molybdenum smelting, and in particular to a specific gravity measuring device for a double-effect concentration system. Background Technology

[0002] In the evaporation and concentration process of dilute ammonium molybdate in tungsten-molybdenum smelting, a single-effect and a double-effect evaporator are typically used for step-by-step concentration. The double-effect evaporator operates under negative pressure. To determine whether the concentrate has reached the discharge conditions, its specific gravity needs to be tested to see if it is within the range of 1.16–1.18 g / cm³. The existing process usually uses a pump to extract the concentrate from the bottom of the double-effect evaporator to an external container for specific gravity measurement. However, the concentrated concentrate after measurement cannot be directly returned; it can only be returned to the raw material tank and re-concentrated by the single-effect and double-effect evaporators, leading to increased energy consumption and operating costs, while also affecting production efficiency. Therefore, developing a device that can quickly and conveniently measure specific gravity without affecting the normal operation of the double-effect evaporator has become an urgent need in the industry. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a specific gravity measuring device for a double-effect concentration system, which can complete the specific gravity measurement of the solution and achieve recovery without affecting the normal operation of the evaporator.

[0004] The technical solution adopted in this utility model is: A specific gravity measuring device for a double-effect concentration system includes a liquid pump, a suction pipe, a discharge pipe, an overflow cylinder, a measuring cylinder, a discharge return pipe, a measuring liquid return pipe, and a specific gravity meter; The liquid pump inlet is connected to the bottom of the double-effect evaporator via a liquid extraction pipe, and one end of the liquid discharge pipe is connected to the liquid pump outlet, while the other end extends into the overflow cylinder. The overflow cylinder is installed inside the measuring cylinder. The bottom of the overflow cylinder is connected to one end of the drain return pipe, and the other end of the drain return pipe is connected to the double-effect evaporator. One end of the measuring liquid return pipe is connected to the bottom of the measuring cylinder, and the other end is connected to the double-effect evaporator. Valves are installed on the drain pipe, the drain return pipe, and the measuring liquid return pipe; The hydrometer is installed inside the measuring cylinder outside the overflow cylinder.

[0005] Specifically, both the overflow cylinder and the measuring cylinder are open-top cylindrical shapes, with the overflow cylinder positioned at the center inside the measuring cylinder.

[0006] Specifically, both ends of the valve are connected to the pipeline via flanges, and protective covers are installed on the outside of the flanges.

[0007] Specifically, the liquid pump is mounted on the base plate, the inlet end of the liquid extraction pipe is connected to the bottom of the second-effect evaporator, and the outlet end of the liquid extraction pipe is connected to the inlet flange of the liquid pump via a flange.

[0008] More specifically, a support platform is provided on the lower side of the flange at the outlet end of the liquid extraction pipe.

[0009] Due to the adoption of the technical solution described above, this utility model has the following advantages: The specific gravity measuring device of this invention completes sampling and specific gravity determination without affecting the operation of the double-effect evaporator. It has a simple structure, is easy to operate, and the solution can be recycled, avoiding material waste and ensuring the continuity and accuracy of process monitoring. Attached Figure Description

[0010] Figure 1 This is an overall schematic diagram of the present invention.

[0011] In the diagram: 1-Liquid pump, 2-Suction pipe, 3-Drain pipe, 4-Overflow cylinder, 5-Measuring cylinder, 6-Drain return pipe, 7-Measuring liquid return pipe, 8-Specific hydrometer, 9-Flange, 10-Support platform, 11-Double-effect evaporator. Detailed Implementation

[0012] The present invention will be further explained below with reference to the accompanying drawings and embodiments. However, this explanation should not be construed as limiting the scope of protection of the present invention. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0013] Combined with appendix Figure 1 The device shown is a specific gravity measuring device for a double-effect concentration system, including a liquid pump 1, a suction pipe 2, a discharge pipe 3, an overflow cylinder 4, a measuring cylinder 5, a discharge return pipe 6, a measuring liquid return pipe 7, and a specific gravity meter 8.

[0014] Liquid pump 1 is mounted on the base plate. The inlet end of the liquid extraction pipe 2 is connected to the bottom of the double-effect evaporator 11. The outlet end of the liquid extraction pipe 2 is connected to the inlet flange 9 of liquid pump 1 through flange 9. A support platform 10 is provided on the lower side of flange 9. One end of the drain pipe 3 is connected to the outlet of liquid pump 1, and the other end extends into the overflow cylinder 4.

[0015] The overflow cylinder 4 is installed inside the measuring cylinder 5. Both the overflow cylinder 4 and the measuring cylinder 5 are open-top cylindrical shapes. The overflow cylinder 4 is located in the center inside the measuring cylinder 5. The bottom of the overflow cylinder 4 is connected to one end of the drain return pipe 6, and the other end of the drain return pipe 6 is connected to the bottom of the double-effect evaporator 11. One end of the measuring liquid return pipe 7 is connected to the bottom of the measuring cylinder 5, and the other end is connected to the double-effect evaporator 11.

[0016] Valves are installed on drain pipe 3, drain return pipe 6 and measuring liquid return pipe 7; both ends of the valves are connected to the pipes through flanges, and protective covers are installed on the outside of the valve flanges.

[0017] The hydrometer 8 is installed inside the measuring cylinder 5 outside the overflow cylinder 4.

[0018] During operation, the valve on the drain pipe 3 is open. The liquid pump 1 draws the ammonium molybdate solution out of the double-effect evaporator 11 and first enters the overflow cylinder 4. At the same time, the valve on the drain return pipe 6 is opened. The flow rate of the pumped liquid is greater than the return capacity of the drain return pipe 6. The excess solution overflows from the overflow cylinder 4 and flows further into the measuring cylinder 5. When the liquid level in the measuring cylinder 5 reaches the set height, the specific gravity can be measured in real time to obtain the specific gravity data. After the measurement is completed, the liquid pump 1 is turned off. At this time, the solution in the pumping pipe 2, the overflow cylinder 4, and the drain return pipe 6 flows back to the double-effect evaporator 11 under the negative pressure. The valve on the measuring liquid return pipe 7 is opened, and the ammonium molybdate solution in the measuring cylinder 5 flows back to the double-effect evaporator 11 under the negative pressure through the measuring liquid return pipe 7, realizing the recovery of liquid after measurement.

[0019] The parts of this utility model not described in detail are existing technologies.

[0020] The embodiments selected herein for the purpose of disclosing the inventive objectives of this utility model are currently considered appropriate; however, it should be understood that this utility model is intended to include all variations and modifications of the embodiments that fall within the scope of this concept and utility model.

Claims

1. A specific gravity measuring device for a two-effect concentration system, characterized in that, Includes a liquid pump, a suction pipe, a discharge pipe, an overflow cylinder, a measuring cylinder, a discharge return pipe, a measuring liquid return pipe, and a hydrometer; The liquid pump inlet is connected to the bottom of the double-effect evaporator via a liquid extraction pipe, and one end of the liquid discharge pipe is connected to the liquid pump outlet, while the other end extends into the overflow cylinder. The overflow cylinder is installed inside the measuring cylinder. The bottom of the overflow cylinder is connected to one end of the drain return pipe, and the other end of the drain return pipe is connected to the bottom of the double-effect evaporator. One end of the measuring liquid return pipe is connected to the bottom of the measuring cylinder, and the other end is connected to the double-effect evaporator. Valves are installed on the drain pipe, the drain return pipe, and the measuring liquid return pipe; The hydrometer is installed inside the measuring cylinder outside the overflow cylinder.

2. The specific gravity measuring device for a double-effect concentration system according to claim 1, characterized in that: Both the overflow cylinder and the measuring cylinder are open-top cylindrical shapes, with the overflow cylinder positioned at the center inside the measuring cylinder.

3. The specific gravity measuring device for a double-effect concentration system according to claim 1, characterized in that: Both ends of the valve are connected to the pipeline via flanges, and protective covers are installed on the outside of the flanges.

4. The specific gravity measuring device for a double-effect concentration system according to claim 1, characterized in that: The liquid pump is mounted on the base plate, with the inlet end of the liquid extraction pipe connected to the bottom of the second-effect evaporator and the outlet end of the liquid extraction pipe connected to the inlet flange of the liquid pump via a flange.

5. The specific gravity measuring device for a double-effect concentration system according to claim 4, characterized in that: A support platform is provided on the lower side of the flange at the outlet end of the liquid extraction pipe.

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