A mechanical passive long-distance dual-liquid level automatic control method

Abstract

A mechanical passive long-distance dual-liquid level automatic control method, support plates are arranged on both sides of the lifting frame, and the rear ends of the two support plates are bent inward to form guide plates; positioning grooves are opened on the lifting frame, and the guide plates are engaged in the positioning grooves, and an automatic moving device is connected below the lifting frame, and the lifting frame is driven by the automatic moving device so that the lifting frame can move along the guide plates; the lifting frame turns on or off the control switch of the equipment during the movement. The present invention does not require the participation of staff, and can automatically control the control switch of the switch control box in a timely and effective manner, saving manual labor and labor costs. And long-distance dual liquid level control can be achieved by changing the distance between the two stops on the float rod.

Description

Technical Field

[0001] The present invention relates to a method for automatically controlling a control switch, and more specifically, to a special automatic control method for realizing the opening and closing of a double liquid level control switch by utilizing the high and low changes of the liquid level. Background Art

[0002] There are many devices that use floats to switch equipment by raising and lowering as the liquid level changes. For example, the patent with the publication number CN1483975A discloses a two-position control float valve, including a float and a valve body. The left side of the float is connected to the right end of the float arm. The left end of the float arm is provided with a fork. The float arm is rotatably connected to the connecting rod. The moving valve core is fixed to a core shaft. The right end of the core shaft is provided with a bend, which is inserted into the fork. The valve body is provided with a moving valve core and a fixed valve core. The moving valve core and the fixed valve core are provided with matching water holes. The problem of two-position control is solved by using a fork with a certain spacing to drive the bend of the core shaft and rotate the core shaft to open and close the valve. However, there are still some shortcomings: First, because the upper and lower liquid level differences within the control range are the same as the spacing of the fork, the travel of the bend in the fork is limited, and it can only be applied to the two-position control of replenishment with a smaller liquid level difference.

[0003] The existing float dual liquid level control devices all work under the condition of a small liquid level difference, and are short-stroke dual liquid level control devices. However, in some sewage pools, the water level in the sewage pool changes frequently. If drainage is required every time a small liquid level difference occurs, the water pump will be automatically started frequently to pump water, which is likely to have a significant impact on the service life of the water pump. Therefore, it is necessary to increase the height difference between the liquid level when the water pump is started and the liquid level when the pumping is completed, that is, to make the water pump work under the condition of a large liquid level difference, thereby reducing the number of automatic starts of the water pump and extending the service life of the water pump. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the shortcomings of the short-stroke float double liquid level control device in the prior art, a double liquid level control device with a long stroke and a large liquid level difference is proposed.

[0005] In view of the above problems, the technical solution proposed in the present invention is: a mechanical passive long-distance dual liquid level automatic control method, support plates are arranged on both sides of the lifting frame, and the rear ends of the two support plates are bent inward to form guide plates; a positioning groove is opened on the lifting frame, and the guide plate is engaged in the positioning groove, and an automatic moving device is connected under the lifting frame, and the lifting frame is driven by the automatic moving device so that the lifting frame can move along the guide plate; the lifting frame turns on or off the control switch of the equipment during the movement.

[0006] Preferably, a switch control box is installed at the top of the support plates on both sides of the lifting frame, and a control switch is installed on the switch control box. The switch control box and the control switch are used to limit the highest position of the lifting frame moving upward; a bottom plate is installed at the lower end of the support plate, and the bottom plate is used to limit the lowest position of the lifting frame moving downward.

[0007] Preferably, a switch control box is arranged above the lifting frame, and a control switch is installed at the lower end of the switch control box. When the liquid level rises, the float can move upward along the float rod under the action of buoyancy; and when the float hits the stopper at the upper end of the float rod, as the water level gradually rises, the float can push the float rod and the lifting frame upward in turn. When the lifting frame reaches the highest position, the lifting frame can press the control switch.

[0008] Preferably, another control switch is provided below the lifting frame. When the liquid level drops, the float moves downward along the float rod, and the float hits the stopper at the lower end of the float rod, the float can push the float rod and the lifting frame downward in turn as the water level drops. When the lifting frame reaches the lowest position, the lifting frame can press the other control switch.

[0009] Preferably, a supporting ear is provided on the outer side of the supporting plate, and a lifting ear is provided on the outer side of the lifting frame, and the two ends of the spring are respectively hooked on the supporting ear and the lifting ear; when the lifting frame reaches the highest position, the elastic force of the spring is used to balance the gravity of the lifting frame, so that when the float moves between the stoppers at both ends of the float rod, the lifting frame is still at the highest position, and the original working state of the control switch can be maintained.

[0010] Preferably, the automatic moving device includes a float, a float rod, a first stop and a second stop. The float is first put on the float rod, and then the stops are installed on both ends of the float rod. A guide device is connected to the top of the float rod so that when the float hits any stop on the float rod, a switch can be turned on.

[0011] Preferably, a through sliding hole is opened on the float, and the float rod is passed through the sliding hole so that the float is sleeved on the float rod; the internal cavity of the float is separated from the sliding hole so that the internal cavity of the float becomes a closed annular cavity, so that the liquid at the sliding hole will not enter the cavity inside the float.

[0012] Preferably, the float is placed in the liquid, and the float moves upward or downward along the float rod as the liquid level rises and falls under the action of the buoyancy of the liquid, until the float hits the stopper at the upper end of the float rod or the stopper at the lower end of the float rod.

[0013] The beneficial technical effect of the present invention is that the control switch of the switch control box is completely automatically controlled by the rise and fall of the liquid level, and the participation of the staff is not required. The control switch of the switch control box can be automatically controlled in a timely and effective manner, saving labor and labor costs. And by changing the distance between the two stops on the float rod, long-distance dual liquid level control can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the first embodiment;

[0015] Figure 2 This is a schematic diagram of the structure of the first embodiment without the automatic moving device;

[0016] Figure 3 is a schematic diagram of the structure of the support plate;

[0017] Figure 4 It is a structural schematic diagram of the lifting frame and the floating rod;

[0018] Figure 5 It is an enlarged structural schematic diagram of the lifting frame;

[0019] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2;

[0020] In the figure: bottom plate 01, support plate 1, support ears 11, cross bar 12, strip holes 14, mounting plate 15, guide plate 16, lifting frame 2, bottom frame plate 21, top frame plate 22, back plate 23, positioning groove 24, cross plate 25, lifting ears 26, hook 27, side frame plate 28, float 3, float rod 4, first stop 41, second stop 42, lifting ring 43, spring 5, switch control box 6, control switch 61. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with embodiments and drawings:

[0022] Embodiment 1

[0023] The entire device of this embodiment is placed in water or other liquids. The float 3 is affected by buoyancy in the liquid and rises and falls with the rise and fall of the liquid level. In this embodiment, a waterproof switch control box 6 is provided, and a waterproof control switch 61 is provided on the switch control box 6. The control switch 61 is a button-type control switch 61, and the control switch 61 is connected to the water pump through a wire. It is necessary to press the button of the control switch 61 at a high liquid level to start the water pump to pump water or liquid to the outside, so that the liquid level drops. When the liquid level drops to a certain height, the lifting frame 2 moves downward and leaves the control switch 61, and the button pops up. When the button is pressed, the control switch 61 is in the open state, and when the button pops up, the control switch 61 is in the closed state.

[0024] Based on the above working conditions, the specific structure of this embodiment is as follows Figure 1 and Figure 2 As shown, the switch control box 6 is fixedly connected to the top of the support plate 1, and the control switch 61 is arranged at the lower end of the switch control box 6. When the lifting frame 2 reaches the highest position, the lifting frame 2 can press the control switch 61 to start the water pump to pump water. When the lifting frame 2 moves downward and leaves the control switch 61, the control switch 61 will be turned off, thereby turning off the water pump and stopping pumping water.

[0025] like Figure 1 , Figure 3 and Figure 4 As shown, two support plates 1 are arranged in parallel on the bottom plate 01, and the lower end of each support plate 1 is bent outward to form a mounting plate 15, and the mounting plate 15 is fixed on the bottom plate 01. The rear end of each support plate 1 is bent inward to form a guide plate 16, so that the length direction of the guide plate 16 is the vertical direction. The cross bar 12 passes through the two support plates 1, so that the two support plates 1 are fixedly connected to the cross bar 12. The upper end of each support plate 1 is provided with a support ear 11 bent outward, and both ends of the spring 5 are provided with a hook, the hook at the upper end of the spring 5 is hooked on the support ear 11 of the support plate 1, and the hook at the lower end of the spring 5 is hooked on the lifting frame 2.

[0026] like Figure 1 , Figure 4 and Figure 5 As shown, the upper end of the lifting frame 2 is provided with a top frame plate 22, the lower end of the lifting frame 2 is provided with a bottom frame plate 21, and the rear end of the lifting frame 2 is provided with a back plate 23, the upper end of the back plate 23 is seamlessly connected to the top frame plate 22, and the lower end of the back plate 23 is seamlessly connected to the bottom frame plate 21. Side frame plates 28 are provided on both sides of the front end of the lifting frame 2, the upper end of the side frame plate 28 is connected to the top frame plate 22, and the lower end of the side frame plate 28 is connected to the bottom frame plate 21. Positioning grooves 24 recessed inward are provided on both sides of the top frame plate 22 and the bottom frame plate 21, and the guide plate 16 at the rear end of the support plate 1 is engaged in the positioning grooves 24 of the top frame plate 22 and the bottom frame plate 21, so that the lifting frame 2 can move along the guide plate 16. The switch control box 6 and the control switch 61 are used to limit the highest position of the lifting frame 2 moving upward, and the bottom plate 01 is used to limit the lowest position of the lifting frame 2 moving downward.

[0027] The automatic moving device includes a floating ball 3, a floating rod 4, a first stopper 41 and a second stopper 42. The first stopper 41 is installed at the upper end of the floating rod 4, and the second stopper 42 is installed at the lower end of the floating rod 4. The first stopper 41 and the second stopper 42 are tightly connected to the floating rod 4 and will not move relative to the floating rod 4. The floating ball 3 is sleeved on the floating rod 4, and the floating ball 3 is located between the first stopper 41 and the second stopper 42. A through bottom hole is opened on the bottom plate 01, and the upper end of the floating rod 4 passes through the bottom hole, and a lifting ring 43 is provided on the upper end of the floating rod 4. The lifting ring 43 is engaged in the hook 27 at the lower end of the lifting frame 2, so that the floating rod 4 can drive the lifting frame 2 to move. The floating ball 3 includes an outer wall and an inner wall, and the inner wall is surrounded by a hollow circular tube, and the hollow part is a sliding hole. The outer wall is arranged on the outside of the inner wall, and the outer wall is seamlessly connected to the inner wall, and the outer wall and the inner wall surround a closed, annular cavity.

[0028] like Figures 1 to 5 As shown, the specific principle of this embodiment is: the entire device is fixedly installed in a pool or a vacuum well. When the water level rises, the float 3 moves upward along the float rod 4 under the buoyancy of the water. As the water level gradually rises, the float 3 hits the first stopper 41 on the float rod 4. The float 3 can drive the float rod 4 to move upward through the first stopper 41, and the float rod 4 drives the lifting frame 2 to move upward along the guide plate 16 through the hook 27. When the water continues to rise, the lifting frame 2 will hit the control switch 61 at the lower end of the switch control box 6, and the control switch 61 is turned on to start the water pump to pump water.

[0029] After the water is pumped out, the water level in the pool or vacuum continues to drop. As the water level drops, the float 3 moves downward along the float rod 4, and during the period when the float 3 has not yet hit the second stopper 42, due to the tension of the spring 5, the lifting frame 2 will always be at the highest position of the guide plate 16, and the guide plate 16 will always press the control switch 61, so that the control switch 61 is always in the open state.

[0030] As the water level continues to drop, the float 3 contacts the second stopper 42. Under the action of the gravity of the float 3, the float 3 drives the float rod 4 and the lifting frame 2 to move downward in sequence, and the spring 5 is stretched. The lifting frame 2 will be disengaged from the button on the control switch 61, and the control switch 61 will be turned off, thereby turning off the water pump and stopping pumping water.

[0031] Embodiment 2

[0032] like Figure 6As shown, the difference between this embodiment and the first embodiment is that in this embodiment, two waterproof switch control boxes 6 are provided, and a waterproof control switch 61 is provided on the switch control box 6. The control switches 61 are all button-type control switches 61, and both control switches 61 are connected to the water pump through wires. It is necessary to press the button at the upper end at a high liquid level to start the water pump to pump water or liquid to the outside, thereby lowering the liquid level. When the liquid level drops to a certain height, it is necessary to press the button at the lower end to turn off the water pump. The control method of the two control switches 61 on the water pump is similar to the double-control switch of the home light, and any one of the control switches 61 can independently control the water pump.

[0033] Based on the above working conditions, the specific structure of this embodiment is as follows Figure 6 As shown, in this embodiment, the spring 5 is not required, the first switch control box 6 is still fixedly connected to the top of the support plate 1, and the control switch 61 is arranged at the lower end of the switch control box 6. The second switch control box 6 is fixed below the bottom plate 01, and a mounting hole is provided on the bottom plate 01. The control switch 61 of the second switch control box 6 passes through the mounting hole on the bottom plate 01 and extends to the top of the bottom plate 01. In other words, the first control switch 61 is arranged above the second control switch 61.

[0034] Since the structure of the switch control box 6 of this embodiment is different from that of the switch control box 6 in the first embodiment, when the lifting frame 2 is separated from the first control switch 61, the first control switch 61 is still in the open state, and the water pump is still pumping water. The water pump will not be turned off until the lifting frame 2 presses the second control switch 61. In other words, the two switch control boxes 6 of this embodiment are similar to the double-control switches of electric lights, and the water pump is electrically controlled in a mutually independent manner.

[0035] Obviously, without departing from the principles of the present invention, several improvements or modifications should be considered as within the protection scope of the present invention.

Claims

1. A mechanical passive long-distance dual liquid level automatic control method, characterized in that: Support plates are provided on both sides of the lifting frame, and the rear ends of the two support plates are bent inward to form guide plates; a positioning groove is opened on the lifting frame, and the guide plate is engaged in the positioning groove, and an automatic moving device is connected under the lifting frame, and the lifting frame is driven by the automatic moving device so that the lifting frame can move along the guide plate; the lifting frame turns on or off the control switch of the equipment during the movement; the automatic moving device includes a floating ball, a floating rod, a first stopper and a second stopper. The floating ball is first put on the floating rod, and then the stops are installed at both ends of the floating rod. The guide device is connected to the top of the floating rod so that when the floating ball touches any stopper on the floating rod, a switch can be turned on; a switch control box is provided above the lifting frame, and a control switch is installed at the lower end of the switch control box. When the liquid level rises, the floating ball can move upward along the floating rod under the action of buoyancy; and when the floating ball touches the stopper at the upper end of the floating rod After the lifting, as the water level gradually rises, the float can push the float rod and the lifting frame upward in turn. When the lifting frame reaches the highest position, the lifting frame can press the control switch; another control switch is set below the lifting frame. When the liquid level drops and drives the float to move downward along the float rod, and the float hits the stopper at the lower end of the float rod, the float can push the float rod and the lifting frame downward in turn as the water level drops. When the lifting frame reaches the lowest position, the lifting frame can press the other control switch; a support ear is set on the outer side of the support plate, and a lifting ear is set on the outer side of the lifting frame, and the two ends of the spring are respectively hooked on the support ear and the lifting ear; when the lifting frame reaches the highest position, the elastic force of the spring is used to balance the gravity of the lifting frame, so that when the float moves between the stops at both ends of the float rod, the lifting frame is still at the highest position, and the original working state of the control switch can be maintained.

2. A mechanical passive long-distance dual liquid level automatic control method according to claim 1, characterized in that: A switch control box is installed at the top of the support plates on both sides of the lifting frame, and a control switch is installed on the switch control box. The switch control box and the control switch are used to limit the highest position of the lifting frame moving upward; a bottom plate is installed at the lower end of the support plate, and the bottom plate is used to limit the lowest position of the lifting frame moving downward.

3. A mechanical passive long-distance dual liquid level automatic control method according to claim 2, characterized in that: A through sliding hole is opened on the float, and the float rod is passed through the sliding hole so that the float is sleeved on the float rod; the internal cavity of the float is separated from the sliding hole so that the internal cavity of the float becomes a closed annular cavity, so that the liquid at the sliding hole will not enter the cavity inside the float.

4. A mechanical passive long-distance dual liquid level automatic control method according to claim 3, characterized in that: Place the float in the liquid and allow it to move up or down along the float rod as the liquid level rises or falls under the action of the buoyancy of the liquid until the float hits the stopper at the upper end of the float rod or the stopper at the lower end of the float rod.

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