Self-cleaning device for a sludge level sensor

Abstract

The utility model discloses a kind of self-cleaning device of mud level sensor, including host computer, power supply and fixed bolster, the fixed bolster one side is fixed with mud level measurement sensor, the fixed bolster top and located mud level measurement sensor top fixed installation have pneumatic cylinder, the bottom end inside of the pneumatic cylinder is slidably provided with piston rod, the piston rod bottom end is fixed with movable component, the movable component one end is fixed with brush, and brush is contacted with mud level measurement sensor;The utility model solves the problem that mud level measurement sensor lamp pearl is covered by silt, cannot promptly clean pollution, measurement error or cannot measure, guarantee the stable reliable of sensor measurement data, help market promotion;Realize self-cleaning, can save a lot of manpower, time and money cost;Different self-cleaning cycle and number of times can be set through host computer program, more scenes can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of mud level sensor cleaning technology, and in particular to a self-cleaning device for mud level sensors. Background Technology

[0002] For accurate measurement of flow rate in open channels with easily sedimented water, in addition to accurately measuring the water depth and flow velocity in the open channel, the silt in the open channel will also seriously affect the accuracy of flow rate measurement. Apart from the silt level measurement sensor invented by our company using photoelectric principle, which realizes the accurate measurement of silt height in open channels, there is currently no equipment on the market that can accurately measure the silt height in small open channels.

[0003] Our company invented a mud level measurement sensor (such as...) Figure 5 The device contains a main board, an optical signal transmitting board, and an optical signal receiving board. The optical signal transmitting board has several light-emitting diodes (LEDs) spaced at equal intervals, and the optical signal receiving board has several photodiodes spaced at equal intervals, determined by the measurement range. Each LED and photodiode has a corresponding lamp base. Both LEDs and photodiodes are connected to the main board. The optical signal transmitting board and optical signal receiving board are mounted parallel to each other at the bottom of the housing. The fixed distance between the LEDs and photodiodes is L. The LEDs and photodiodes are numbered from the bottom of the optical signal transmitting board and optical signal receiving board upwards, with the bottommost diode numbered 1 and the topmost diode numbered n. The motherboard determines the position of the mud-water interface based on the different intensity of the received light signal. Based on the diode number m at the mud-water interface position and the fixed spacing L of the evenly distributed diodes, the motherboard calculates the distance h1 from the mud-water interface to the bottom of the mud level sensor, which is h1=(m-1)*L. When installing the mud level sensor, the bottom of the mud level sensor is close to the bottom of the open channel, and the distance between the diode and the bottom of the channel is almost negligible. Therefore, the distance h1 from the mud-water interface to the bottom of the mud level sensor is the height of the silt in the open channel.

[0004] However, practical verification has shown that the LEDs of the mud level sensor are frequently covered by silt and other debris, leading to incorrect or unmeasurable measurement data. The current solution involves regular manual cleaning by maintenance personnel. The frequency of cleaning varies depending on the installation environment and the season, making it time-consuming, labor-intensive, and extremely costly. Furthermore, it often results in incorrect or unmeasurable test data before cleaning is scheduled, leading to a poor user experience and severely impacting product promotion and sales. Therefore, we have proposed a self-cleaning device for the mud level sensor. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-cleaning device for mud level sensors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a self-cleaning device for a mud level sensor, comprising a main unit, a power supply, and a fixed bracket. A mud level measuring sensor is fixed on one side of the fixed bracket. A cylinder is fixedly installed on the top of the fixed bracket above the mud level measuring sensor. A piston rod is slidably disposed inside the bottom end of the cylinder. A movable component is fixed to the bottom end of the piston rod. A brush is fixed to one end of the movable component, and the brush is in contact with the mud level measuring sensor. A mounting base is fixed to the other end of the movable component via an elastic telescopic rod. A limit sensor is fixed to the upper surface of the mounting base. A warning block is fixed to the lower surface of the movable component directly above the limit sensor.

[0007] Furthermore, an air pipe is fixed to the side wall of the cylinder, and an air compressor is fixedly connected to the other end of the air pipe.

[0008] Furthermore, a two-way solenoid valve is fixedly installed on the surface of the cylinder, and the air pipe is connected to the two-way solenoid valve. The two-way solenoid valve is connected to the main unit via a cable.

[0009] The beneficial effects of this utility model are: This invention solves the problem of mud level measurement sensor LED beads being covered by silt, making timely cleaning impossible, and causing measurement errors or failures. It ensures the stability and reliability of sensor measurement data, which is helpful for market promotion. It achieves self-cleaning, saving a lot of manpower, time and money. Different self-cleaning cycles and times can be set through the host program, making it adaptable to more scenarios. Attached Figure Description

[0010] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is the first perspective view of the present invention; Figure 2 This is a second perspective view of the present invention; Figure 3 This is the front view of the present invention; Figure 4 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the installation of a mud level measurement sensor using existing technology.

[0012] The attached figures are labeled as follows: 1. Cylinder; 2. Two-way solenoid valve; 3. Air pipe; 4. Piston rod; 5. Mounting base; 6. Warning block; 7. Limit sensor; 8. Brush; 9. Moving parts; 10. Fixed bracket; 11. Mud level measuring sensor. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figures 1-5 As shown, a self-cleaning device for a mud level sensor is disclosed, comprising a main unit, a power supply and a fixing bracket 10, wherein a mud level measuring sensor 11 is fixed on one side of the fixing bracket 10. A cylinder 1 is fixedly installed on the top of the fixed bracket 10 and above the mud level measuring sensor 11. A piston rod 4 is slidably arranged inside the bottom end of the cylinder 1. A movable part 9 is fixed at the bottom end of the piston rod 4. A brush 8 is fixed at one end of the movable part 9 and the brush 8 is in contact with the mud level measuring sensor 11. The other end of the movable part 9 is fixed to the mounting base 5 through an elastic telescopic rod. A limit sensor 7 is fixed on the upper surface of the mounting base 5. A warning block 6 is fixed on the lower surface of the movable part 9 and directly above the limit sensor 7.

[0015] The power supply provides power to the main unit and the mud level measuring sensor 11 via a cable. The mud level measuring sensor 11 and the main unit also communicate and exchange data via a cable. At the same time, the main unit controls the operation of the cylinder 1 via a cable. An air pipe 3 is fixed to the side wall of cylinder 1, and an air compressor is fixedly connected to the other end of the air pipe 3. The air compressor serves as the power source for the operation of the entire cylinder 1. It provides power to the cylinder 1 through the air pipe 3, so that the piston rod 4 moves inside the cylinder 1 under the action of the air source.

[0016] A two-way solenoid valve 2 is fixedly mounted on the surface of cylinder 1, and air pipe 3 is connected to the two-way solenoid valve 2. The two-way solenoid valve 2 is connected to the main unit via a cable.

[0017] The host controls the movement, stopping, and reversing of the piston rod 4 in the cylinder 1 by controlling whether the bidirectional solenoid valve 2 is powered. The internal program of the host controls the cleaning frequency of the lamp beads of the mud level measuring sensor 11 by controlling the time interval of whether the bidirectional solenoid valve 2 is powered.

[0018] Working principle: This device supplies power to the main unit and mud level measuring sensor 11. After the equipment has completed initialization, when the main unit reaches the timed cleaning time, the MCU of the main unit sends a command to power on the bidirectional solenoid valve 2. The bidirectional solenoid valve 2 opens to allow gas to enter the cylinder 1. The piston rod 4 in the cylinder 1 begins to move downward, which in turn drives the moving part 9 to move, thereby driving the brush 8 to move downward, using the brush 8 to clean the mud level measuring sensor 11. The piston rod 4 runs at a speed of 10 mm / s (adjustable). When the mounting base 5 touches the bottom, the moving part 9 continues to descend, the detection distance between the limit sensor 7 and the warning block 6 decreases, and it enters the detection distance of the limit sensor 7 (detection distance is H4). It approaches the limit sensor 7 and triggers it, sending an interrupt signal to the host. After receiving the interrupt signal from the limit sensor 7, the host immediately sends a stop command to make the bidirectional solenoid valve 2 switch, shutting off the intake and exhaust. The piston rod 4 stops descending, and the warning block 6 also stops descending.

[0019] However, the time from when the host sends a stop command to when the device responds is at least 0.2s and at most 0.4s. The bidirectional solenoid valve 2 starts to respond, with an excitation time of 0.1 seconds / cycle (10 cycles / second). The piston rod 4 runs at a speed of 10mm / s. Therefore, from when the limit sensor 7 senses the warning block 6 until the warning block 6 stops descending, the minimum running distance of the piston rod 4 is S=UT=10*0.3=3mm, and the maximum running distance of the piston rod 4 is S=UT=10*0.5=5mm. To ensure that the warning block 6 does not collide with the limit sensor 7, H4 should be greater than 5mm, and a certain margin should be left. Choosing 8-10mm is most suitable.

[0020] Afterwards, the host MCU sends a command to control the bidirectional solenoid valve 2 to close the air intake and open the exhaust. The piston rod 4 drives the moving part 9 to rise as a whole. The brush 11 will continue to clean the mud on the mud level measuring sensor 11 lamp bead until it returns to the initial state, thus completing one self-cleaning cycle of the mud level measuring sensor 11 lamp bead.

[0021] The self-cleaning time interval and frequency can be set by the host according to different environments, seasons, and water qualities, thus adapting to different usage conditions and achieving timely and effective cleaning of the LED beads of the mud level measuring sensor 11, ensuring the stability and reliability of the measurement data. Simultaneously, self-cleaning is achieved through host program control, freeing up manpower, saving costs, and further facilitating the market promotion of the mud level measuring sensor 11.

[0022] In this device, the self-cleaning mud level measuring sensor 11 is used as an example to illustrate the composition, working process and benefits of this device, but it is not limited to the self-cleaning mud level measuring sensor 11 of our company, and can also be used as a self-cleaning device for other products.

[0023] In this embodiment, a gas station can also be selected as the gas source. When an air compressor is used as the gas source, the air compressor can be controlled by the host control relay. If a gas station is used as the gas source, an electric air valve can be added and controlled by the host.

[0024] In this embodiment, air is used as the power source. However, the power source can be adjusted according to the actual situation, such as replacing it with an electric motor. The corresponding accessories also need to be adapted.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A self-cleaning device for a mud level sensor, comprising a main unit, a power supply, and a fixing bracket (10), wherein a mud level measuring sensor (11) is fixed on one side of the fixing bracket (10), characterized in that: A cylinder (1) is fixedly installed on the top of the fixed bracket (10) and above the mud level measuring sensor (11). A piston rod (4) is slidably arranged inside the bottom end of the cylinder (1). A movable part (9) is fixed at the bottom end of the piston rod (4). A brush (8) is fixed at one end of the movable part (9) and the brush (8) is in contact with the mud level measuring sensor (11). A mounting base (5) is fixed at the other end of the movable part (9) through an elastic telescopic rod. A limit sensor (7) is fixed on the upper surface of the mounting base (5). A warning block (6) is fixed on the lower surface of the movable part (9) and directly above the limit sensor (7).

2. The self-cleaning device for a mud level sensor according to claim 1, characterized in that: The cylinder (1) has an air pipe (3) fixed to its side wall, and the other end of the air pipe (3) is fixedly connected to an air compressor.

3. The self-cleaning device for a mud level sensor according to claim 2, characterized in that: A two-way solenoid valve (2) is fixedly installed on the surface of the cylinder (1), and the air pipe (3) is connected to the two-way solenoid valve (2). The two-way solenoid valve (2) is connected to the host through a cable.

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