Liquid level control device

Abstract

The utility model relates to the technical field of liquid level control, in particular to a liquid level control device which comprises a bottom plate, a water storage pond arranged on one side of the bottom plate, a water inlet arranged at the left end of the water storage pond, a water pump arranged at the left end of the water inlet and a water outlet arranged at the lower end of the water inlet. Two telescopic supporting rods which are parallel left and right and extend up and down are arranged on the bottom plate, a lever is arranged on the supporting rod on the left side, a floating ball is arranged at the left end of the lever, and a balancing weight is arranged at the right end of the lever; a lower proximity switch is arranged on the supporting rod on the right side, and an upper proximity switch is arranged at the upper end of the lower proximity switch; a plurality of universal wheels are arranged at the lower end of the bottom plate; by arranging the lever structure and the proximity switch, automatic control over the water pump at different liquid levels of the water storage pond is completed, the structure is simple and reliable, and cost is low; in addition, the telescopic rod is arranged, so that the device can adjust the heights of the lever and the proximity switch according to the heights of different containers, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level control, in particular to a liquid level control device. Background Art

[0002] A liquid level controller is a device used to control the height of liquids. It uses mechanical or electronic methods to achieve high and low liquid level control, and then controls solenoid valves, water pumps, etc. to achieve semi-automatic or fully automated operation.

[0003] For example, Chinese patent document CN104676080B discloses a liquid level control device comprising a float and a regulating mechanism connected to the float. A discharge pipe of a container is provided with an air valve assembly for controlling the amount of liquid discharged. The air valve assembly includes a valve stem that slides vertically therein for controlling the amount of air intake, a first elastic member for providing an elastic restoring force to drive the valve stem downward, the regulating mechanism abutting against the lower end of the valve stem, and a second elastic member connected to the regulating mechanism for providing an elastic restoring force to propel the valve stem upward. The device controls the regulating mechanism's movement toward or away from the valve stem of the air valve assembly by the up-and-down movement of the float, causing the valve stem to move up and down within the air valve assembly to control the amount of air intake, and thus the amount of liquid discharged. This effectively controls the liquid level in the container within a certain range. This liquid level control device has a simple structure and is highly practical.

[0004] However, the above control device still has certain defects: the above device needs to be fixed inside the container for use, has poor versatility, and the complex structure of the device makes it prone to malfunction during use. At the same time, the use of various valve components makes the device have a high manufacturing cost. Utility Model Content

[0005] The utility model provides a liquid level control device to solve the technical problems of poor versatility and high manufacturing cost caused by the need for the existing liquid level control device to be fixed to a container for use.

[0006] In order to solve the above problems, the present invention provides a liquid level control device adopting the following technical solutions:

[0007] A liquid level control device includes a base plate, a water tank is provided on one side of the base plate, and the side where the water tank is located is defined as the left side. A water inlet is provided at the left end of the water tank, a water pump is provided at the left end of the water inlet, and a water outlet is provided at the lower end of the water inlet. The device is characterized in that: the base plate is provided with two parallel and retractable support rods extending up and down, the left support rod is provided with a lever, the left end of the lever is provided with a float, and the right end of the lever is provided with a counterweight block so that the float moves up and down with the water level in the water tank; the right support rod is provided with a lower proximity switch, the upper end of the lower proximity switch is provided with an upper proximity switch, and the upper and lower proximity switches are both used to detect the position of the counterweight block to control the start and stop of the water pump; the lower end of the base plate is provided with multiple universal wheels to improve the mobility of the device.

[0008] Its beneficial effects are: by setting up a lever structure and a proximity switch, the water pump is automatically controlled at different liquid levels in the water tank, and the structure is simple, reliable and low in cost; in addition, the setting of the telescopic rod enables the device to adjust the height of the lever and the proximity switch according to the height of different containers, thereby improving the applicability of the device; the setting of the universal wheel improves the mobility of the device.

[0009] Furthermore, the lower ends of the two support rods have a fixing tube extending up and down, a fixing rod extending up and down is passed through the fixing tube, and a threaded fixing knob is provided at the left end of the fixing tube, which is used to adjust the extension length of the fixing rod.

[0010] Furthermore, a fixed shaft is provided on the front side of the fixed rod at the left end, and the lever is rotatably mounted on the fixed shaft.

[0011] Furthermore, the support rod on the right side is provided with two fixing blocks corresponding to the upper proximity switch and the lower proximity switch, and the upper proximity switch and the lower proximity switch are respectively passed through the two fixing blocks.

[0012] Furthermore, the fixing blocks are each provided with an adjusting knob to adjust the fixed positions of the upper proximity switch and the lower proximity switch on the support rod.

[0013] The beneficial effect is that the setting of the adjustment knob enables the device to adjust the heights of the upper proximity switch and the lower proximity switch on the support rod, thereby improving the convenience of operation.

[0014] Furthermore, a connecting rope is provided between the lever and the float.

[0015] Furthermore, the universal wheel is provided with a brake.

[0016] The beneficial effect is that the setting of the brake enables the device to be fixed during use, thereby improving the control accuracy of the equipment.

[0017] The beneficial effects of the liquid level control device provided by the utility model are:

[0018] 1. By setting up a lever structure and a proximity switch, the water pump is automatically controlled at different liquid levels in the water tank. The structure is simple, reliable and low-cost. In addition, the setting of the telescopic rod enables the device to adjust the height of the lever and the proximity switch according to the height of different containers, thereby improving the applicability of the device. The setting of the universal wheel improves the mobility of the device.

[0019] 2. The setting of the adjustment knob enables the device to adjust the height of the upper proximity switch and the lower proximity switch on the support rod, thereby improving the convenience of operation.

[0020] 3. The setting of the brake enables the device to be fixed during use, thereby improving the control accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0022] Figure 1 This is a structural schematic diagram of a liquid level control device provided by the utility model.

[0023] Description of reference numerals:

[0024] 1. Bottom plate; 2. Water reservoir; 21. Water inlet; 22. Water outlet; 3. Water pump;

[0025] 4. Lever assembly; 41. Fixed shaft; 42. Lever; 43. Connecting rope; 44. Float; 45. Counterweight;

[0026] 5. Control assembly; 51. Fixing block; 52. Adjustment knob; 53. Upper proximity switch; 54. Lower proximity switch;

[0027] 6. Universal wheel; 61. Brake; 7. Support rod; 71. Fixing cylinder; 72. Fixing rod; 73. Fixing knob. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0029] The main idea of ​​the present invention is to achieve automatic control of the water pump 3 at different liquid levels in the water tank 2 by providing a lever structure and a proximity switch, which has a simple, reliable structure and low cost. In addition, the provision of the telescopic rod enables the device to adjust the height of the lever 42 and the proximity switch according to the height of different containers, thereby improving the applicability of the device. The provision of the universal wheel 6 improves the mobility of the device.

[0030] After introducing the basic principles of the present invention, various non-limiting embodiments of the present invention are described in detail below. The numbers of any elements in the drawings are for illustration only and not for limitation, and any names are for distinction only and do not have any limiting meaning.

[0031] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0032] Example 1 of a liquid level control device provided by the present utility model:

[0033] like Figure 1 As shown, the device includes a horizontally arranged base plate 1, and a rectangular water tank 2 is provided on one side of the base plate 1. The water tank 2 is defined as being located on the left side of the base plate 1. A water inlet 21 is provided at the left end of the water tank 2, and a water pump 3 for supplying water to the water tank 2 is provided at the left end of the water inlet 21, and a water outlet 22 is provided at the lower end of the water inlet 21; a lever assembly 4 is provided at the upper end of the base plate 1, and a control assembly 5 is provided at the right end of the lever assembly 4 and located on the base plate 1.

[0034] The following will first introduce the base plate 1. The base plate 1 is a rectangular plate. Two parallel support rods 7 extending up and down are provided at the upper end of the base plate 1. The support rods 7 are telescopic rods. The support rods 7 include a cylindrical fixed tube 71 extending up and down fixed on the base plate 1. The upper end of the fixed tube 71 has a cylindrical fixed rod 72 extending up and down passing through the fixed tube 71. A fixing knob 73 screwed to the fixed tube 71 is provided on the left side of the upper end of the fixed tube 71. The fixing knob 73 is used to push the fixing rod 72 to prevent the fixing rod 72 from moving up and down; four universal wheels 6 are provided at the lower end of the base plate 1, and each universal wheel 6 is provided with a brake 61 to prevent the device from moving during use.

[0035] The lever assembly 4 is introduced below. The lever assembly 4 includes a lever 42 extending left and right and fixed on the left fixed rod 72. The fixed rod 72 has a fixed shaft 41 on the front side. The lever 42 is rotatably mounted on the fixed shaft 41. The left end of the lever 42 is provided with a float 44, and the float 44 is located in the water tank. A connecting rope 43 is provided between the lever 42 and the float 44. A counterweight 45 is provided at the right end of the lever 42 to convert the height of the water level in the water tank into the height of the counterweight 45 through the lever assembly 4.

[0036] The control assembly 5 is introduced below. The control assembly 5 includes two rectangular fixed blocks 51 mounted on the support rod 7. The front side of the two fixed blocks 51 is provided with an adjusting knob 52. The adjusting knob 52 is screwed onto the fixed block 51 to fix the fixed block 51 by pushing the fixed rod 72. In addition, an upper proximity switch 53 is provided on the fixed block 51 at the upper end, and a lower proximity switch 54 is provided on the fixed block 51 at the lower end. The upper proximity switch 53 and the lower proximity switch 54 are both used to control the start and stop of the water pump 3 by detecting the position of the counterweight block 45.

[0037] The working principle of the device is as follows: first, adjust the fixed knob 73 according to the size of the water tank 2, adjust the lever assembly 4 to an appropriate height, and then adjust the heights of the upper proximity switch 53 and the lower proximity switch 54 according to the range of motion of the counterweight block 45 and the limited water level range, so that the upper proximity switch 53 corresponds to the lower limit water level, and the lower proximity switch 54 corresponds to the upper limit water level; when the float 44 is at the lower limit water level, the corresponding counterweight block 45 will trigger the upper proximity switch 53, and at this time the water pump 3 starts and supplies water to the water tank 2; when the float 44 is at the upper limit water level, the corresponding counterweight block 45 will trigger the lower proximity switch 54, and at this time the water pump 3 stops running, thereby realizing automatic control of the water level.

[0038] Example 2 of a liquid level control device provided by the present utility model:

[0039] The main difference between it and Example 1 is:

[0040] In embodiment 1, a counterweight is provided at the right end of the lever.

[0041] In this embodiment, a sandbox with adjustable weight is provided at the right end of the lever.

[0042] Example 3 of a liquid level control device provided by the present utility model:

[0043] The main difference between it and Example 1 is:

[0044] In Example 1, the support rod is a cylindrical rod.

[0045] In this embodiment, the support rod is a rectangular rod.

[0046] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings of this specification. They are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0047] In addition, in the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A liquid level control device, comprising a base plate, a water reservoir provided on one side of the base plate, the side where the water reservoir is located being defined as the left side, a water inlet provided at the left end of the water reservoir, a water pump provided at the left end of the water inlet, and a water outlet provided at the lower end of the water inlet, characterized in that: The bottom plate is provided with two parallel and retractable support rods extending up and down. A lever is provided on the left support rod, a float is provided on the left end of the lever, and a counterweight is provided on the right end of the lever, so that the float moves up and down with the water level in the water tank; a lower proximity switch is provided on the right support rod, and an upper proximity switch is provided on the upper end of the lower proximity switch. Both the upper and lower proximity switches are used to detect the position of the counterweight to control the start and stop of the water pump; a plurality of universal wheels are provided at the lower end of the bottom plate to improve the mobility of the device.

2. A liquid level control device according to claim 1, characterized in that: The lower ends of the two support rods are provided with a fixing tube extending up and down, a fixing rod extending up and down is passed through the fixing tube, and a threaded fixing knob is provided at the left end of the fixing tube, which is used to adjust the extension length of the fixing rod.

3. A liquid level control device according to claim 2, characterized in that: A fixed shaft is provided on the front side of the fixed rod at the left end, and the lever is rotatably mounted on the fixed shaft.

4. A liquid level control device according to claim 3, characterized in that: The support rod on the right side is provided with two fixing blocks corresponding to the upper proximity switch and the lower proximity switch, and the upper proximity switch and the lower proximity switch are respectively passed through the two fixing blocks.

5. A liquid level control device according to claim 4, characterized in that: The fixing blocks are each provided with an adjusting knob to adjust the fixed positions of the upper proximity switch and the lower proximity switch on the support rod.

6. A liquid level control device according to claim 5, characterized in that: A connecting rope is provided between the lever and the float.

7. A liquid level control device according to claim 6, characterized in that: The universal wheel is provided with a brake.

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