Automatic water level adjusting device for sealing water tank of circular cooler and working method of automatic water level adjusting device

Abstract

The invention relates to an automatic water level adjusting device for a sealing water tank of a circular cooler and a working method thereof. The automatic water level adjusting device for the sealing water tank of the circular cooler comprises a water supply mechanism and a water drainage mechanism, the water supply mechanism is composed of a water supply pipe and a floating ball valve, and the water drainage mechanism is composed of a water drainage pipe, an electric water drainage valve, a float switch, an industrial personal computer, a heavy hammer and a cable. The water supply mechanism adopts a ball float valve to realize water supply control, namely the water level lower limit of the sealed water tank is controlled; the drainage mechanism realizes drainage control by interlocking a float switch and an electric drainage valve, namely the upper limit of the water level of the sealed water tank is controlled; the water supply mechanism and the water drainage mechanism are simple in structure, convenient to install and low in failure rate, and therefore the working reliability of the sealed water tank is improved.

Description

Technical Field

[0001] The invention relates to the technical field of annular cooling, and in particular to an automatic water level regulating device for a sealed water tank of an annular cooler and a working method thereof. Background Art

[0002] The ring cooler (abbreviated as ring cooler) is the core equipment in the sintering and pelletizing production process system. The ring cooler uses the driving force of the blower to allow normal temperature air to continuously pass through the high-temperature material to quickly cool the high-temperature material. Sealing is one of the important properties of the ring cooler. At present, the ring coolers used at home and abroad mainly use rubber parts and ring cone surface contact sealing, and the radius of the ring cooler is generally between 10-40m. It is difficult to ensure the accuracy of the structural dimensions during the manufacturing and installation process. Wear and deformation will inevitably occur during long-term operation, resulting in a decrease in the sealing effect.

[0003] Water seal has the characteristics of simple structure and excellent sealing performance, such as Figure 3 As shown, the upper seal of the ring cooler is usually in the form of water seal. That is, a sealed water tank 1 is set outside the trolley guardrail 2 of the ring cooler, and a ring-shaped plug plate 6 is inserted into the sealed water tank 1 through the upper ring cooler cover 5 to achieve sealing. The water level of the sealed water tank should always be kept within the set range.

[0004] At present, most annular coolers use radar level gauges and electric water supply valves to interlock and control the water level of the sealed water tank. The cost is relatively high, and the radar level gauge is in a high temperature and dusty working environment for a long time, which is very easy to be damaged. Some annular coolers use float level gauges instead of radar level gauges to save costs, but the float level gauge needs to be installed in the sealed water tank, where dust easily accumulates and forms sludge, which often causes the float rod to be scratched and damaged by the sludge. In addition, the drainage valve of the annular cooler is usually a manual valve. When the sludge accumulates too high or the wind pressure suddenly increases, causing the water level to exceed the height of the sealed water tank, if the water cannot be drained in time, it will cause the sealed water tank to overflow. Summary of the invention

[0005] The present invention provides an automatic water level regulating device for a sealed water tank of an annular cooler and a working method thereof, comprising a water supply mechanism and a drainage mechanism; the water supply mechanism adopts a float valve to realize water supply control, namely, controls the lower limit of the water level in the sealed water tank; the drainage mechanism adopts a float switch and an electric drainage valve interlock to realize drainage control, namely, controls the upper limit of the water level in the sealed water tank; the water supply mechanism and the drainage mechanism have simple structures, are easy to install, and have a low failure rate, thereby improving the working reliability of the sealed water tank.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A device for automatically adjusting the water level of a sealed water tank of an annular cooler comprises a water supply mechanism and a drainage mechanism; the water supply mechanism consists of a water supply pipe and a float valve, the water supply pipe is arranged above the sealed water tank, the float valve consists of a valve body, a valve stem and a float ball connected in sequence, the valve body is installed on the water supply pipe, and the float ball floats on the water surface of the sealed water tank; the drainage mechanism consists of a drainage pipe, an electric drainage valve, a float switch, an industrial computer, a weight and a cable; a plurality of drainage pipes are evenly arranged along the annular direction at the bottom of the sealed water tank, and an electric drainage valve is correspondingly arranged on each drainage pipe; the weight and the float switch are arranged one by one corresponding to the drainage pipes, the float switch floats in the water in the sealed water tank, a weight is arranged above the float switch, and the electric drainage valve is connected to the industrial computer by wireless communication; the float switch is connected to the industrial computer by a cable, the cable passes through the weight, and the length of the cable between the weight and the float switch can be adjusted.

[0008] The weight is suspended below the ring cooling machine cover through a hanger.

[0009] A cable hole is provided in the middle of the weight along the axial direction, the cable passes through the cable hole, and the cable is fixed to the cable hole by a rubber plug with a hole.

[0010] The cable passes through the top of the annular cooling machine cover and is fixed at the passing point by a rubber plug with holes.

[0011] A working method of an automatic water level regulating device for a sealed water tank of an annular cooler, comprising:

[0012] 1) Water supply process control; when the water level in the sealed water tank is lower than the set water level lower limit, the float drops with the water level and drives the valve stem to rotate, and the float valve opens to inject water into the sealed water tank; when the water level in the sealed water tank reaches the set water level upper limit, the float rises with the water level and drives the valve stem to rotate in the opposite direction, the float valve closes, and stops injecting water into the sealed water tank;

[0013] 2) Drainage process control: By adjusting the length of the cable between the weight and the float switch, the position of the float switch is made 10 to 20 mm lower than the set upper limit of the water level in the sealed water tank; when the water level at a certain point in the sealed water tank exceeds the set upper limit of the water level, the corresponding float switch flips over, and the micro switch in the float is actuated, and an electrical signal is sent to the industrial computer through the cable. The industrial computer sends a wireless control signal to the corresponding electric drain valve, and the electric drain valve starts to drain water to prevent the sealed water tank from overflowing; when the water level at the corresponding point in the sealed water tank drops to the set lower limit of the water level, the corresponding float switch flips over and resets, the micro switch resets and sends an electrical signal to the industrial computer, and the industrial computer controls the electric drain valve to close and stop draining.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1) The water supply mechanism uses a float valve to realize water supply control, that is, to control the lower limit of the water level of the sealed water tank, without the need for electricity connection, with a simple structure, easy installation and low equipment cost;

[0016] 2) The drainage mechanism uses a float switch and an electric drainage valve interlock to achieve drainage control, that is, to control the upper limit of the water level of the sealed water tank. It has a simple structure, is easy to install, has low equipment cost, and has a low failure rate;

[0017] 3) The automatic adjustment of the water level of the sealing water tank of the annular cooler is realized, thereby improving the working reliability of the sealing water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the water supply mechanism of the present invention.

[0019] Figure 2 yes Figure 1 AA view in.

[0020] Figure 3 It is a schematic diagram of the drainage mechanism of the present invention. Figure 1 (Water level is within the set range, no drainage is required).

[0021] Figure 4 It is a schematic diagram of the drainage mechanism of the present invention. Figure 2 (Water level exceeds the set upper limit and drains).

[0022] In the figure: 1. Sealed water tank 2. Trolley guardrail 3. Float valve 4. Water supply pipe 5. Annular cooling machine cover 6. Plug plate 7. Heavy hammer 8. Hanger 9. Float switch 10. Cable 11. Industrial computer 12. Drain pipe 13. Electric drain valve DETAILED DESCRIPTION

[0023] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0024] The present invention provides an automatic water level regulating device for a sealed water tank of an annular cooler, comprising a water supply mechanism and a drainage mechanism; Figure 1 , Figure 2 As shown, the water supply mechanism is composed of a water supply pipe 4 and a float valve 3. The water supply pipe 4 is arranged above the sealed water tank 1. The float valve 3 is composed of a valve body, a valve stem and a float connected in sequence. The valve body is installed on the water supply pipe 4, and the float floats on the water surface of the sealed water tank 1. Figure 3 , Figure 4As shown, the drainage mechanism consists of a drainage pipe 12, an electric drainage valve 13, a float switch 9, an industrial computer 11, a weight 7 and a cable 10; a plurality of drainage pipes 12 are evenly arranged along the annular direction at the bottom of the sealed water tank 1, and an electric drainage valve 13 is correspondingly arranged on each drainage pipe 12; the weight 7 and the float switch 9 are arranged one-to-one with the drainage pipes 12, the float switch 9 floats in the water in the sealed water tank 1, the weight 7 is arranged above the float switch 9, and the electric drainage valve 13 is connected to the industrial computer 11 by wireless communication; the float switch 9 is connected to the industrial computer 11 by a cable 10, the cable 10 passes through the weight 7, and the length of the cable between the weight 7 and the float switch 9 can be adjusted.

[0025] The weight 7 is suspended below the ring cooling machine cover 5 through a hanger 8 .

[0026] A cable hole is provided in the middle of the weight 7 along the axial direction, and the cable 10 passes through the cable hole. The cable 10 is fixed to the cable hole by a rubber plug with a hole.

[0027] The cable 10 passes through the top of the annular cooling machine cover 5 and is fixed at the passing point by a rubber plug with holes.

[0028] The working method of the automatic water level regulating device of the sealing water tank of the annular cooler described in the present invention comprises:

[0029] 1) Water supply process control; when the water level in the sealed water tank 1 is lower than the set water level lower limit, the float ball drops with the water level and drives the valve stem to rotate, and the float valve 3 opens to inject water into the sealed water tank 1; when the water level in the sealed water tank 1 reaches the set water level upper limit, the float ball rises with the water level and drives the valve stem to rotate in the opposite direction, and the float valve 3 closes, stopping injecting water into the sealed water tank 1;

[0030] 2) Drainage process control: by adjusting the length of the cable 10 between the weight 7 and the float switch 9, the position of the float switch 9 is made to be 10 to 20 mm lower than the set upper limit of the water level in the sealed water tank 1; when the water level at a certain place in the sealed water tank 1 exceeds the set upper limit of the water level, the corresponding float switch 9 flips over, and the micro switch in the float is actuated, and an electrical signal is sent to the industrial computer 11 through the cable 10, and the industrial computer 11 sends a wireless control signal to the corresponding electric drain valve 13, and the electric drain valve 13 starts to drain water to prevent the sealed water tank 1 from overflowing; when the water level at the corresponding place in the sealed water tank 1 drops to the set lower limit of the water level, the corresponding float switch 9 flips over and resets, the micro switch resets and sends an electrical signal to the industrial computer 11, and the industrial computer 11 controls the electric drain valve 13 to close and stop draining.

[0031] The working principle of the automatic water level regulating device for the sealing water tank of an annular cooler described in the present invention is as follows:

[0032] like Figure 1 , Figure 2As shown, in the water supply mechanism, the valve body of the float valve 3 is installed on the water supply pipe 4, the float of the float valve 3 floats on the water surface of the sealed water tank 1, and the valve body and the float are connected by a valve stem; when the water level in the sealed water tank 1 is lower than the set water level lower limit, the float drops with the water level and drives the valve stem to rotate a certain angle, so that the float valve 3 opens to inject water into the sealed water tank 1. When the water level in the sealed water tank 1 reaches the set water level upper limit, the float valve 3 closes and stops injecting water into the sealed water tank 1. Through the above process, mechanical water supply is realized, the water level lower limit is controlled, and no electricity connection is required. The structure is simple and reliable, and the cost is low.

[0033] like Figure 3 , Figure 4 As shown, the drainage mechanism is composed of a drainage pipe 12, an electric drainage valve 13, an industrial computer 11, a cable 10, a weight 7, a float switch 9, etc. Several float switches 9 are evenly distributed in the sealed water tank 1 along the circumferential direction, and several drainage pipes 12 are correspondingly arranged at the bottom of the sealed water tank 1. The electric drainage valve 13 is installed on the drainage pipe 12 one by one. The material density of the weight 7 is greater than that of water. The weight 7 is fixedly connected to the annular cooling machine cover 5 through the hanger 8. The cable 10 passes through the weight 7 to connect the float switch 9 and the industrial computer 11. The cable 10 between the weight 7 and the float switch 9 also plays a limiting role to ensure that the float switch 9 is placed at a position slightly lower than the upper limit water level in the sealed water tank 1. When the water level in the sealed water tank 1 exceeds the set upper limit of the water level, the float switch 9 can flip. The electric drainage valve 13 is installed on the drainage pipe 12, and the electric drainage valve 13 is connected to the industrial computer 11 through the cable 10. After the float switch 9 is triggered, a control signal is sent to the electric drain valve 13 through the industrial computer 11; the industrial computer 11 has a wireless signal sending function, and the electric drain valve 13 has a wireless signal receiving function, thereby realizing remote wireless control of automatic drainage.

[0034] When the local water level in the sealed water tank 1 exceeds the set upper water level limit, the float in the corresponding float switch 9 rises and flips with the water level, the micro switch in the float is actuated and transmits an electrical signal to the industrial computer 11 through the cable 10, and the industrial computer 11 controls the electric drain valve 13 to open the drain after receiving the signal to prevent the sealed water tank 1 from overflowing. When the water level at the corresponding location drops to the set lower water level limit, the float switch 9 flips and resets, the micro switch resets and transmits an electrical signal to the industrial computer 11, and the industrial computer 11 controls the electric drain valve 13 to close and stop draining.

[0035] Since the float switch 9 and the weight 7 are flexibly connected via a cable, they can be prevented from being scratched by mud, and the equipment has good reliability.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic water level regulating device for a sealing water tank of an annular cooler, characterized in that: It includes a water supply mechanism and a drainage mechanism; the water supply mechanism consists of a water supply pipe and a float valve, the water supply pipe is arranged above the sealed water tank, the float valve consists of a valve body, a valve stem and a float connected in sequence, the valve body is installed on the water supply pipe, and the float floats on the water surface of the sealed water tank; the drainage mechanism consists of a drainage pipe, an electric drainage valve, a float switch, an industrial computer, a weight and a cable; a plurality of drainage pipes are evenly arranged along the annular direction at the bottom of the sealed water tank, and an electric drainage valve is correspondingly arranged on each drainage pipe; the weight and the float switch are arranged one by one corresponding to the drainage pipes, the float switch floats in the water in the sealed water tank, a weight is arranged above the float switch, and the electric drainage valve is connected to the industrial computer through wireless communication; the float switch is connected to the industrial computer through a cable, the cable passes through the weight, and the length of the cable between the weight and the float switch can be adjusted.

2. The automatic water level regulating device for the sealing water tank of an annular cooler according to claim 1 is characterized in that: The weight is suspended below the ring cooling machine cover through a hanger.

3. The automatic water level regulating device for the sealing water tank of an annular cooler according to claim 1 is characterized in that: A cable hole is provided in the middle of the weight along the axial direction, the cable passes through the cable hole, and the cable is fixed to the cable hole by a rubber plug with a hole.

4. The automatic water level regulating device for the sealing water tank of an annular cooler according to claim 1 is characterized in that: The cable passes through the top of the annular cooling machine cover and is fixed at the passing point by a rubber plug with holes.

5. A method for operating the automatic water level regulating device for the sealing water tank of an annular cooler according to any one of claims 1 to 4, characterized in that: include: 1) Water supply process control; when the water level in the sealed water tank is lower than the set water level lower limit, the float drops with the water level and drives the valve stem to rotate, and the float valve opens to inject water into the sealed water tank; when the water level in the sealed water tank reaches the set water level upper limit, the float rises with the water level and drives the valve stem to rotate in the opposite direction, the float valve closes, and stops injecting water into the sealed water tank; 2) Drainage process control: By adjusting the length of the cable between the weight and the float switch, the position of the float switch is made 10 to 20 mm lower than the set upper limit of the water level in the sealed water tank; when the water level at a certain point in the sealed water tank exceeds the set upper limit of the water level, the corresponding float switch flips over, and the micro switch in the float is actuated, and an electrical signal is sent to the industrial computer through the cable. The industrial computer sends a wireless control signal to the corresponding electric drain valve, and the electric drain valve starts to drain water to prevent the sealed water tank from overflowing; when the water level at the corresponding point in the sealed water tank drops to the set lower limit of the water level, the corresponding float switch flips over and resets, the micro switch resets and sends an electrical signal to the industrial computer, and the industrial computer controls the electric drain valve to close and stop draining.

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