Water tank float limiting device

Abstract

The utility model relates to a water tank float limiting device, including float valve, float diagonal rod, vertical diagonal rod connecting plate, base plate, protrusion, float vertical pole, limiting device, float. The device is used on the water tank device of electric heating steam generator, realizes the water shortage in water tank when touching limiting device, cuts off the control line of water pump motor, makes water pump unable to start, avoids the water pump motor to burn out because of the water pump idling, effectively solves the water pump motor long -term in idling state when the water shortage in water tank, often burns the water pump motor's difficult problem.

Description

Technical Field

[0001] This patent application belongs to the field of metallurgical processing technology, and more specifically, it relates to a water tank float limiting device, especially a device applied to an electrically heated steam generator in a sulfur testing laboratory of a steel plant. Background Technology

[0002] Steelmaking plants need to inspect billet samples in the sulfur printing laboratory. Before inspection, the billet samples need to be pickled with hydrochloric acid heated by steam. The electric heating steam generator converts water into steam to heat the hydrochloric acid used for pickling the billet samples.

[0003] An electric heating steam generator mainly consists of a water tank, a water pump, a heating container, and a heating device.

[0004] The principle of the electric heating steam generator is that after the automatic heating button is turned on, the heating device heats the water in the heating container into steam. When the water level in the heating container is lower than the critical value, the water pump 2 is automatically started to replenish the water in the water tank 1 to the heating container.

[0005] Under normal circumstances, the water tank maintains a certain water level, which is achieved by a suspended ball valve. When the water level in the tank drops, the suspended ball will descend along with the water level. When the water level drops to the lower limit of the tank, the suspended ball at this position will trigger the suspended ball valve to open and replenish the water tank. When the water level reaches the upper limit of the tank, the suspended ball at this position will trigger the suspended ball valve to close and stop replenishing the water tank.

[0006] A common problem on site is that when the water pipes supplying water to the water tank freeze in winter, the water supply is interrupted, or the suspension valve cannot open to supply water to the water tank normally, the water tank is in a state of water shortage for a long time. At this time, after the electric heating steam generator is turned on to automatically heat the water, when the water level in the heating container is lower than the critical value, the water pump will automatically start to replenish water. However, the water pump will run dry without water, which will burn out the water pump motor and affect the normal operation of the equipment.

[0007] Therefore, it is necessary to develop a water tank float limiting device to prevent the water pump from starting when the water tank is short of water, thus avoiding the above-mentioned drawbacks. Utility Model Content

[0008] The technical problem this invention aims to solve is to provide a water tank float limiting device to prevent the water pump motor from burning out frequently when the water tank of the electrically heated steam generator in the sulfur stamping inspection room of a steel plant is short of water.

[0009] To solve the above problems, the technical solution adopted by this utility model is as follows: A water tank float limiting device, adapted to water tanks and water pumps, includes a float located inside the water tank, a float slant rod connected to the float, a float valve connected to the end of the float slant rod, a vertical slant rod connecting plate located in the middle of the float slant rod, a float vertical rod connected to the top of the vertical slant rod connecting plate, and a limiting device matching the float vertical rod. The inlet of the float valve is connected to a water inlet pipe, and the control port is connected to the control line of the water pump motor. The float vertical rod and the vertical slant rod connecting plate are rotatable, specifically, the float vertical rod can rotate around the connecting pin of the float vertical rod and the vertical slant rod connecting plate.

[0010] The vertical inclined rod connecting plate includes a base plate set on the inner wall of the water tank, multiple protrusions spaced apart on the base plate, and mounting holes set at the top of the base plate. The float inclined rod is located between two adjacent protrusions. The protrusions are used to limit the float inclined rod. The angle between the float inclined rod and the horizontal plane is an acute angle. The mounting holes are used to connect the float vertical rod. The limiting device includes a base plate installed on the outer wall of the water tank and a mounting plate set on the base plate. There is a gap between the mounting plate and the base plate, and the float rod is located in the gap. The limit device is connected in series with the water pump's control line. When the water tank is low on water, the float descends, causing the float's vertical rod to descend as well. This causes the limit contact of the limit device to touch the water tank cover, disconnecting the water pump's control line. The principle behind disconnecting the water pump's control line is that when the water tank is low on water, the limit device descends with the float. When the limit contact touches the water tank cover, it cuts off the normally closed control power supply to the water pump, thus stopping the pump's operation.

[0011] Furthermore, the mounting plate is made of flexible material.

[0012] Furthermore, there are 2 to 4 protrusions on the substrate, and the interval between each protrusion is 1 to 5 cm.

[0013] Furthermore, the angle between the buoy's angled rod and the horizontal plane is 30°~45°.

[0014] Furthermore, the float valve is a diaphragm type float valve.

[0015] Furthermore, the float's vertical rod is made of resin.

[0016] Furthermore, the model number of the limit device is LX19-121.

[0017] The beneficial effects achieved by this utility model due to the adoption of the above technical solution are as follows: This device solves the problem of water pump motors running idle for extended periods when the water tank is low on water, frequently causing them to burn out. It is highly practical.

[0018] This device is characterized by its simple structure and low manufacturing cost. It can save hundreds of thousands of yuan in spare parts costs every year and avoid the problem of water pumps frequently burning out motors and not having spare parts, which would affect billet production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an electrically heated steam generator; Figure 2 This is a structural diagram of the water tank; Figure 3 This diagram illustrates the usage process of this device during water shortage.

[0020] The components in the diagram are labeled as follows: 1. Water tank; 2. Water pump; 3. Water level gauge; 4. Heating device; 5. Heating container; 6. Steam outlet; 7. Float valve; 8. Float slant rod; 9. Vertical slant rod connecting plate; 91. Base plate; 92. Protrusion; 10. Float vertical rod; 11. Limiting device; 12. Float. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the embodiments.

[0022] A water tank float limiting device, adapted to Figure 1 The electric heating steam generator includes a water tank 1, a water pump 2, a water level gauge 3, a heating device 4, a heating container 5, and a steam outlet 6. The specific structure will not be described in detail.

[0023] The specific structure of this device is as follows: Figure 2 It includes a float 12 located in the water tank 1, a float rod 8 connected to the float 12, a float valve 7 connected to the end of the float rod 8, a vertical rod connecting plate 9 located in the middle of the float rod 8, a float vertical rod 10 connected to the top of the vertical rod connecting plate 9, and a limiting device 11 matched with the float vertical rod 10. The inlet of the float valve 7 is connected to the water inlet pipe, and the control port is connected to the control line of the water pump 2 motor. The float vertical rod 10 and the vertical rod connecting plate 9 can rotate. Specifically, the float vertical rod 10 can rotate around the connecting pin of the float vertical rod 10 and the vertical rod connecting plate 9.

[0024] The vertical inclined rod connecting plate 9 includes a base plate 91 disposed on the inner wall of the water tank 1, a plurality of protrusions 92 disposed at intervals on the base plate 91, and a mounting hole disposed at the top of the base plate 91. The float inclined rod 8 is located between two adjacent protrusions 92. The protrusions 92 are used to limit the float inclined rod 8. The angle between the float inclined rod 8 and the horizontal plane is an acute angle. The mounting hole is used to connect the float vertical rod 10.

[0025] The limiting device 11 includes a base plate installed on the outer wall of the water tank 1 and a mounting plate set on the base plate. There is a gap between the mounting plate and the base plate, and the float rod 10 is located in the gap.

[0026] The limiting device 11 is connected in series with the control line of the water pump 2. When the water tank is low on water, the float 12 descends, causing the float rod 10 to descend as well. This causes the limiting contact of the limiting device 11 to touch the water tank cover, disconnecting the control line of the water pump 2. The principle behind disconnecting the control line of the water pump 2 is that when the water tank is low on water, the limiting device 11 descends with the float 12. When the limiting contact of the limiting device 11 touches the water tank cover of the water tank 1, the limiting contact cuts off the normally closed control power supply of the water pump, thereby stopping the operation of the water pump.

[0027] In terms of selection, the mounting plate is made of flexible material. There are 2 to 4 protrusions 92 on the base plate 91, and the interval between each protrusion 92 is 1 to 5 cm. The angle between the float rod 8 and the horizontal plane is 30° to 45°.

[0028] The float valve 7 is a diaphragm float valve, the float rod 10 is made of resin, and the limiting device 11 is model LX19-121.

[0029] Figure 3 The diagram illustrates the process by which the limiting contact of the limiting device 11 touches the water tank when water is scarce.

[0030] In summary, this device stops the pump when water tank 1 is low on water. A float limiter is installed on the float linkage, which rises and falls with the float 12. When the water level in water tank 1 reaches the lower limit, the device automatically cuts off the control line of water pump 2. Specifically, a switch is added to the control line that controls the start of water pump 2, and this switch is... Figure 2 The limiting device 11 in the middle, when there is a water shortage, the limiting device 11 descends with the float 12, the limiting contact on the limiting device 11 presses on the water tank cover of the water tank 1, causing the limiting contact to rotate and cut off the control line of the water pump 2, thereby shutting down the water pump 2, thus protecting the water pump 2 and preventing it from running dry and burning out the water pump 2 motor.

Claims

1. A water tank float limiting device, adapted to a water tank (1) and a water pump (2), characterized in that: Includes a float (12) located in the water tank (1), a float rod (8) connected to the float (12), a float valve (7) connected to the end of the float rod (8), a vertical rod connecting plate (9) set in the middle of the float rod (8), a float vertical rod (10) connected to the top of the vertical rod connecting plate (9), and a limiting device (11) matching the float vertical rod (10). The inlet of the float valve (7) is connected to the water inlet pipe, and the control port is connected to the control line of the water pump (2) motor. The float vertical rod (10) and the vertical rod connecting plate (9) can rotate. The vertical inclined rod connecting plate (9) includes a base plate (91) set on the inner wall of the water tank (1), a plurality of protrusions (92) spaced apart on the base plate (91), and a mounting hole set at the top of the base plate (91). The float inclined rod (8) is located between two adjacent protrusions (92). The protrusions (92) are used to limit the float inclined rod (8). The angle between the float inclined rod (8) and the horizontal plane is an acute angle. The mounting hole is used to connect the float vertical rod (10). The limiting device (11) includes a bottom plate installed on the outer wall of the water tank (1) and an mounting plate set on the bottom plate. There is a gap between the mounting plate and the bottom plate, and the float rod (10) is located in the gap. The limiting device (11) is connected in series with the control line of the water pump (2). When there is no water in the water tank, the float (12) descends, which drives the float rod (10) to descend, causing the limiting head of the limiting device (11) to touch the water tank cover, and the control line of the water pump (2) is disconnected.

2. The water tank float limiting device according to claim 1, characterized in that: The mounting plate is made of flexible material.

3. The water tank float limiting device according to claim 2, characterized in that: There are 2 to 4 protrusions (92) on the substrate (91), and the interval between each protrusion (92) is 1 to 5 cm.

4. The water tank float limiting device according to claim 2, characterized in that: The angle between the buoy's inclined rod (8) and the horizontal plane is 30°~45°.

5. The water tank float limiting device according to claim 1, characterized in that: The float valve (7) is a diaphragm float valve.

6. A water tank float limiting device according to any one of claims 1-5, characterized in that: The float rod (10) is made of resin.

7. A water tank float limiting device according to any one of claims 1-5, characterized in that: The model of the limiting device (11) is LX19-121.

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