Desalted water concentration detecting and sampling device for hot blast stove

Abstract

The utility model relates to the field of hot blast stoves, in particular to a hot blast stove demineralized water concentration detection sampling device which comprises a pressure tank, a box body is connected to the bottom of the outer wall of one side of the pressure tank, a water supplementing tank is connected to the outer wall of the other side of the box body, and a sampling assembly is arranged at the bottom of the outer wall of one side of the pressure tank. A measuring assembly is arranged at the center of the pressure tank, a circulating assembly is installed at the bottom of the inner wall of the pressure tank, and a first water pump is installed at the bottom of the outer wall of one side of the pressure tank; the sampling assembly comprises a sampling pipe connected to the outer wall of one side of the pressure tank, a screw joint ring welded to the outer wall of one end of the sampling pipe and a collecting cylinder screwed in the screw joint ring. According to the utility model, the second water pump is started to extract demineralized water in the water replenishing tank and convey the demineralized water into the pressure tank, the electrically operated valve in the return pipe is opened, so that the demineralized water in the pressure tank flows back to the water replenishing tank, and the second water pump circularly mixes the demineralized water in the pressure tank, thereby improving the detection accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast stoves, in particular to a desalted water concentration detection and sampling device for a hot blast stove. Background Art

[0002] A hot blast stove is a thermal power machine. The function of a hot blast stove in an iron-smelting blast furnace is to heat the blast air to the required temperature to improve the efficiency and productivity of the blast furnace; it works on the principle of "heat storage". Gas is burned in the combustion chamber, and the high-temperature waste gas passes through the checker bricks and stores heat in them. When the checker bricks are fully heated, the hot blast stove can be changed to air supply. At this time, the valves related to combustion are closed, and the air supply valves are opened. The cold air is heated by passing through the checker bricks and then sent out;

[0003] Desalted water refers to the finished water obtained after removing impurities such as suspended solids, colloids, inorganic cations, and anions in water by using various water treatment processes. Desalted water is required in the entire system of the hot blast stove. After the desalted water is prepared, it needs to be sampled and detected. For the desalted water inside the tank, only the desalted water at the top can be sampled and detected, resulting in poor accuracy. Summary of the Utility Model

[0004] The purpose of the utility model is to address the above-mentioned problems and deficiencies by providing a desalted water concentration detection and sampling device for a hot blast stove: after closing one valve and opening another valve, the desalted water inside the sampling pipe enters the collection cylinder. After closing the valve and rotating the collection cylinder, the collection cylinder is removed from the connection ring, and then the desalted water in the collection cylinder can be detected, which is convenient for sampling and solves the problems of inconvenient sampling and low measurement accuracy.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A desalted water concentration detection and sampling device for a hot blast stove includes a pressure tank. The bottom of one outer wall of the pressure tank is connected to a box body, and the other outer wall of the box body is connected to a water replenishing tank. A sampling component is provided at the bottom of one outer wall of the pressure tank, and a measuring component is provided at the center of the pressure tank. A circulating component is installed at the bottom of the inner wall of the pressure tank, and a water pump one is installed at the bottom of one outer wall of the pressure tank; the sampling component includes a sampling pipe connected to one outer wall of the pressure tank, a screwing ring welded to one end outer wall of the sampling pipe, and a collection cylinder screwed to the screwing ring; the measuring component includes a central rod installed at the center of the inner wall of the pressure tank and a floating plate slidably connected to the outer wall of the central rod; the circulating component includes a water pump two installed on the inner wall of the box body and two connection rings installed on the inner wall of the pressure tank.

[0007] Preferably, the outer walls of the connection rings close to each other are connected with equally spaced connecting pipes, and the outer walls of the connecting pipes close to each other are provided with equally spaced water outlet holes. The output end of the water pump two is connected to one end of the connection ring.

[0008] Preferably, a reflux pipe is connected to the inner wall of the top of the water replenishing tank, and the other end of the reflux pipe communicates with the inner wall of the pressure tank. The input end of the second water pump is connected to the water replenishing tank.

[0009] Preferably, floating balls are installed on the outer wall of the floating plate at equal intervals, and a liquid level sensor and a pressure sensor are embedded in the outer wall of the floating plate.

[0010] Preferably, a limiting ring is welded to the inner wall of the collection cylinder at one end of the screwing ring, and a sealing ring is fixed to the outer wall of the top of the limiting ring. One end of the outer wall of the screwing ring contacts the sealing ring.

[0011] Preferably, two valves are installed on the outer wall of the sampling pipe, and an electric valve is installed on the outer wall of the reflux pipe. The input end of the first water pump is connected to the pressure tank.

[0012] Preferably, the electric valve, the first water pump and the second water pump are connected to the controller through wires, and the liquid level sensor and the pressure sensor are connected to the signal input end of the controller through signal lines.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. Start the second water pump to pump the demineralized water in the water replenishing tank into the pressure tank, and open the electric valve in the reflux pipe, so that the demineralized water in the pressure tank flows back to the water replenishing tank. The second water pump circulates to mix the demineralized water in the pressure tank, improving the detection accuracy;

[0015] 2. Close one valve and then open the other valve to make the demineralized water in the sampling pipe enter the collection cylinder. After closing the valve, rotate the collection cylinder, and remove the collection cylinder from the connection ring, then the demineralized water in the collection cylinder can be detected, which is convenient for sampling. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of a demineralized water concentration detection and sampling device for a hot blast stove proposed by the utility model;

[0017] Figure 2 It is a schematic sectional structure diagram of a demineralized water concentration detection and sampling device for a hot blast stove proposed by the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the collection cylinder of a demineralized water concentration detection and sampling device for a hot blast stove proposed by the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the central rod of a demineralized water concentration detection and sampling device for a hot blast stove proposed by the utility model.

[0020] In the figure: 1 pressure tank, 2 box body, 3 water replenishing tank, 4 measuring component, 5 first water pump, 6 sampling component, 7 circulating component, 8 second water pump, 9 connecting ring, 10 connecting pipe, 11 return pipe, 12 central rod, 13 floating plate, 14 floating ball, 15 liquid level sensor, 16 sampling pipe, 17 screwed ring, 18 collecting cylinder, 19 sealing ring, 20 valve. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment

[0022] Refer to Figures 1-4 , a desalted water concentration detection and sampling device for a hot blast stove, including a pressure tank 1. The bottom of the outer wall on one side of the pressure tank 1 is connected to a box body 2, and the outer wall on the other side of the box body 2 is connected to a water replenishing tank 3. A sampling component 6 is provided at the bottom of the outer wall on one side of the pressure tank 1, and a measuring component 4 is provided at the center of the pressure tank 1. A circulating component 7 is installed at the bottom of the inner wall of the pressure tank 1, and a first water pump 5 is installed at the bottom of the outer wall on one side of the pressure tank 1;

[0023] The circulating component 7 includes a second water pump 8 installed on the inner wall of the box body 2 and two connecting rings 9 installed on the inner wall of the pressure tank 1;

[0024] The outer walls of the connecting rings 9 on the side close to each other are connected with equally spaced connecting pipes 10, and the outer walls on the side close to each other of the connecting pipes 10 are provided with equally spaced water outlet holes. The output end of the second water pump 8 is connected to one end of the connecting ring 9. After opening the solenoid valve on the return pipe 11, the second water pump 8 pumps the desalted water in the water replenishing tank 3 into the pressure tank 1, and the desalted water in the pressure tank 1 returns to the water replenishing tank 3 through the return pipe 11, circulating to mix the desalted water, facilitating the uniformity of sampling detection and improving the detection accuracy.

[0025] The top inner wall of the water replenishing tank 3 is connected with a return pipe 11, and the other end of the return pipe 11 is communicated with the inner wall of the pressure tank 1. The input end of the second water pump 8 is connected to the water replenishing tank 3. When the second water pump 8 continuously circulates and the electric valve on the return pipe 11 is closed, at this time, the water replenishing tank 3 replenishes the desalted water for the pressure tank 1, facilitating automatic water replenishment. Embodiment

[0026] Refer to Figures 1-4 : The measuring component 4 includes a central rod 12 installed at the center of the inner wall of the pressure tank 1 and a floating plate 13 slidably connected to the outer wall of the central rod 12. The liquid level sensor 15 on the floating plate 13 detects the water level inside the pressure tank 1. When the water level is low, the second water pump 8 is started to pump the desalted water in the water replenishing tank 3 into the pressure tank 1 to replenish water for the pressure tank 1;

[0027] The outer wall of the floating plate 13 is installed with floating balls 14 distributed at equal intervals, and a liquid level sensor 15 and a pressure sensor are embedded in the outer wall of the floating plate 13. The floating plate 13 slides on the central rod 12 along with the water level of the demineralized water. The pressure sensor and the liquid level sensor 15 detect the internal pressure and water level of the pressure tank 1, facilitating water replenishment and pressure measurement.

[0028] The sampling assembly 6 includes a sampling pipe 16 connected to the outer wall of one side of the pressure tank 1, a screwing ring 17 welded to the outer wall of one end of the sampling pipe 16, and a collection cylinder 18 screwed into the screwing ring 17.

[0029] A limiting ring is welded at one end of the inner wall of the collection cylinder 18 where the screwing ring 17 is located, and a sealing ring 19 is fixed on the outer wall of the top of the limiting ring. One end of the outer wall of the screwing ring 17 contacts the sealing ring 19. After closing one valve 20, the other valve 20 is opened, so that the demineralized water inside the sampling pipe 16 enters the collection cylinder 18. The collection cylinder 18 is removed from the screwing ring 17, and the demineralized water in the collection cylinder 18 can be detected.

[0030] Two valves 20 are installed on the outer wall of the sampling pipe 16, and an electric valve is installed on the outer wall of the return pipe 11. The input end of the first water pump 5 is connected to the pressure tank 1.

[0031] The electric valve, the first water pump 5, and the second water pump 8 are connected to the controller through wires, and the liquid level sensor 15 and the pressure sensor are connected to the signal input end of the controller through signal lines.

[0032] Working principle: When in use, both the pressure tank 1 and the water replenishment tank 3 are filled with demineralized water. When it is necessary to detect the demineralized water, start the second water pump 8 to pump the demineralized water in the water replenishment tank 3 and transport it to the connecting ring 9. The connecting ring 9 sprays the demineralized water into the pressure tank 1 through the connecting pipe 10. Open the electric valve in the return pipe 11, so that the demineralized water inside the pressure tank 1 flows back to the water replenishment tank 3. The second water pump 8 circulates to mix the demineralized water inside the pressure tank 1. After a period of time, open the valve 20 at one end of the sampling pipe 16, and part of the demineralized water enters the sampling pipe 16. After closing one valve 20, open the other valve 20, so that the demineralized water inside the sampling pipe 16 enters the collection cylinder 18. After closing the valve 20, rotate the collection cylinder 18, and the collection cylinder 18 is removed from the screwing ring 17, and the demineralized water in the collection cylinder 18 can be detected; during normal operation, the first water pump 5 pumps the demineralized water in the pressure tank 1 for transportation. The liquid level sensor 15 on the floating plate 13 detects the water level inside the pressure tank 1. When the water level is low, start the second water pump 8 to pump the demineralized water in the water replenishment tank 3 and input it into the pressure tank 1 to replenish water for the pressure tank 1.

[0033] The exemplary embodiments of the present utility model are described in detail with reference to the embodiments in the text. However, those skilled in the art can understand that, without departing from the concept of the present utility model, various variations and modifications can be made to the above specific embodiments, and various combinations can be made to the technical features and structures proposed by the present utility model, without exceeding the protection scope of the present utility model. The protection scope of the present utility model is determined by the appended claims. The foregoing description of the specific exemplary embodiments of the present utility model is not intended to limit the present utility model to the precise forms disclosed, and it is obvious that many changes and variations can be made in accordance with the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present utility model, as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. A hot blast furnace desalted water concentration detection sampling device, comprising a pressure tank (1), characterized in that: The bottom of one side outer wall of the pressure tank (1) is connected to a box body (2), and the other side outer wall of the box body (2) is connected to a water replenishment tank (3); a sampling component (6) is provided at the bottom of one side outer wall of the pressure tank (1), and a measuring component (4) is provided at the center of the pressure tank (1); a circulation component (7) is installed at the bottom of the inner wall of the pressure tank (1), and a water pump (5) is installed at the bottom of one side outer wall of the pressure tank (1); The sampling assembly (6) comprises a sampling tube (16) connected to the outer wall of one side of the pressure tank (1), a screw-connecting ring (17) welded to the outer wall of one end of the sampling tube (16), and a collecting tube (18) screwed into the screw-connecting ring (17); The measuring assembly (4) comprises a center rod (12) installed at the center of the inner wall of the pressure tank (1) and a floating plate (13) slidably connected to the outer wall of the center rod (12); The circulation assembly (7) comprises a water pump (8) mounted on the inner wall of the box body (2) and two connecting rings (9) mounted on the inner wall of the pressure tank (1).

2. A hot blast furnace desalted water concentration detection sampling device according to claim 1, characterized in that: The outer wall of one side of the connecting ring (9) is connected to connecting pipes (10) distributed at equal distances, and the outer wall of one side of the connecting pipe (10) is provided with water outlet holes distributed at equal distances, and the output end of the second water pump (8) is connected to one end of the connecting ring (9).

3. A hot blast furnace desalted water concentration detection sampling device according to claim 1, characterized in that: The top inner wall of the water replenishment tank (3) is connected to a return pipe (11), and the other end of the return pipe (11) is in communication with the inner wall of the pressure tank (1). The input end of the second water pump (8) is connected to the water replenishment tank (3).

4. A hot blast furnace desalted water concentration detection sampling device according to claim 1, characterized in that: The outer wall of the floating plate (13) is installed with floating balls (14) distributed at equal distances, and the outer wall of the floating plate (13) is embedded with a liquid level sensor (15) and a pressure sensor.

5. A hot blast furnace desalted water concentration detection sampling device according to claim 1, characterized in that: A limiting ring is welded to the inner wall of the collecting cylinder (18) at one end of the screw-connecting ring (17), and a sealing ring (19) is fixed to the top outer wall of the limiting ring. The outer wall of one end of the screw-connecting ring (17) is in contact with the sealing ring (19).

6. A hot blast furnace desalted water concentration detection sampling device according to claim 1, characterized in that: Two valves (20) are installed on the outer wall of the sampling tube (16), and an electric valve is installed on the outer wall of the return pipe (11). The input end of the water pump 1 (5) is connected to the pressure tank (1).

7. A hot blast furnace desalted water concentration detection sampling device according to claim 6, characterized in that: The electric valve, water pump one (5) and water pump two (8) are connected to a controller via wires, and the liquid level sensor (15) and the pressure sensor are connected to a signal input terminal of the controller via signal lines.

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