Liquid level monitoring and warning device of oil-water separator

Abstract

The utility model discloses a liquid level monitoring and warning device of an oil-water separator, which is characterized in that the distance between the internal liquid level of the oil-water separator and a top plate of the oil-water separator is obtained in real time based on a monitoring unit, so as to judge whether the inside of the oil-water separator is in a blocked state, and the whole monitoring and judging process utilizes an informatization technology. According to the oil-water separator liquid level monitoring device, the change of the liquid level of the oil-water separator is changed from manual inspection to more accurate and more professional automatic monitoring, meanwhile, the alarm device is combined, the automatic alarm effect is achieved when the oil-water separator is in a blocked state, the working efficiency is improved, and efficient operation of a project is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a liquid level monitoring and warning device for an oil-water separator. Background Art

[0002] With the rapid development of society, engineering projects are flourishing everywhere. In the process of engineering project construction, the treatment of restaurant wastewater is an indispensable part of environmental protection. In order to solve the environmental problems caused by restaurant wastewater, oil-water separators came into being. Through multi-stage oil separation and solid particle filtration treatment, oil, water and sediment are discharged separately. Considering that the oil-water separator needs to be cleaned regularly to prevent clogging, it is necessary to monitor the oil and sewage liquid level inside it.

[0003] The traditional method of monitoring the liquid level of an oil-water separator is to use a liquid level meter to measure the level and perform manual inspections. This method is greatly affected by factors such as the construction site environment and the temperature and humidity inside the oil-water separator. During the operation of the oil-water separator, the internal temperature can reach 40-50°C, which can easily generate interference such as water vapor. In addition, the use of a liquid level meter requires long-term real-time power supply, the installation steps are complicated, time-consuming and labor-intensive, and there are low precision and efficiency. The product quality cannot be effectively guaranteed, which brings a huge workload and certain safety hazards to the inspection personnel.

[0004] In view of the shortcomings of the oil-water separator liquid level monitoring method in the prior art, those skilled in the art have been looking for solutions. Utility Model Content

[0005] The utility model aims to provide a liquid level monitoring and warning device for an oil-water separator, so as to solve the problems of low efficiency and low precision in the prior art that the liquid level monitoring of the oil-water separator relies on semi-automatic and semi-manual regular inspection.

[0006] In order to solve the above technical problems, the utility model provides a liquid level monitoring and warning device for an oil-water separator, the liquid level monitoring and warning device for an oil-water separator comprising:

[0007] A monitoring unit, which monitors in real time the internal liquid level of the oil-water separator and the distance between the top plate of the oil-water separator;

[0008] A judgment unit compares the distance obtained by the monitoring unit with a preset warning threshold to judge whether the interior of the oil-water separator is in a blocked state; wherein, when the distance is less than or equal to the preset warning threshold, it is judged that the interior of the oil-water separator is in a blocked state; when the distance is greater than the preset warning threshold, it is judged that the interior of the oil-water separator is in a normal working state;

[0009] The alarm device performs an alarm operation when the judgment unit judges that the interior of the oil-water separator is in a blocked state.

[0010] Optionally, in the liquid level monitoring and warning device of the oil-water separator, the monitoring unit includes: a fixed rod, a floating plate, a vertical rod, a cross rod, an auxiliary plate and a laser rangefinder, the fixed rod and the vertical rod are parallel to each other, one end of the vertical rod is vertically fixed to the floating plate, and the other end of the vertical rod passes through the top plate of the oil-water separator and is vertically fixed to the cross rod; the fixed rod passes through the floating plate, and its two ends are respectively vertically fixed to the bottom surface of the top plate and the bottom plate surface of the oil-water separator; the auxiliary plate is arranged at a position adjacent to the top plate of the oil-water separator, one end of the auxiliary plate is vertically fixed to the fixed rod, and the other end of the auxiliary plate is sleeved on the outside of the vertical rod; the laser rangefinder is arranged at the bottom of the cross rod to measure the distance between the cross rod and the top plate of the oil-water separator; based on the distance between the cross rod and the floating plate and the distance between the cross rod and the top plate of the oil-water separator, the distance between the internal liquid level of the oil-water separator and the top plate of the oil-water separator is obtained.

[0011] Optionally, in the liquid level monitoring and warning device for the oil-water separator, an auxiliary hole adapted for the vertical rod is opened on the auxiliary plate, and the vertical rod can move up and down relative to the auxiliary hole.

[0012] Optionally, in the liquid level monitoring and warning device for the oil-water separator, an auxiliary hole adapted to fit the fixing rod is provided on the floating plate, and the floating plate can move up and down along the fixing rod.

[0013] Optionally, in the liquid level monitoring and warning device for the oil-water separator, the monitoring unit further includes: a controller and a visual display terminal, and the controller is connected to the laser rangefinder, the visual display terminal and the alarm device respectively.

[0014] Optionally, in the liquid level monitoring and warning device for the oil-water separator, the controller is connected to the laser rangefinder via a data communication line, and the controller is connected to the visual display terminal and the alarm device via a wireless network.

[0015] Optionally, in the liquid level monitoring and warning device of the oil-water separator, a top plate hole adapted for a vertical rod is opened on the top plate of the oil-water separator, and the vertical rod, driven by the floating plate, can move up and down relative to the top plate hole as the oil and sewage liquid level in the oil-water separator changes.

[0016] Optionally, in the liquid level monitoring and warning device of the oil-water separator, the alarm device is an alarm.

[0017] Optionally, in the liquid level monitoring and warning device for the oil-water separator, the preset warning threshold is greater than the distance between the water outlet of the lower water outlet pipe of the oil-water separator and the top plate of the oil-water separator.

[0018] Optionally, in the liquid level monitoring and warning device of the oil-water separator, the preset warning threshold is 200 mm.

[0019] In the liquid level monitoring and warning device for the oil-water separator provided by the utility model, the liquid level monitoring and warning device for the oil-water separator includes a monitoring unit, which monitors and obtains the distance between the internal liquid level of the oil-water separator and the top plate of the oil-water separator in real time; a judgment unit, which compares the distance obtained by the monitoring unit with a preset warning threshold value to judge whether the interior of the oil-water separator is in a blocked state; wherein, when the distance is less than or equal to the preset warning threshold value, it is judged that the interior of the oil-water separator is in a blocked state; when the distance is greater than the preset warning threshold value, it is judged that the interior of the oil-water separator is in a normal working state; an alarm device, when the judgment unit judges that the interior of the oil-water separator is in a blocked state, performs an alarm operation. Based on the real-time acquisition of the distance between the internal liquid level of the oil-water separator and the top plate of the oil-water separator by the monitoring unit, it is judged whether the interior of the oil-water separator is in a blocked state. The entire monitoring and judgment process uses information technology to transform the change of the liquid level of the oil-water separator from manual inspection to more accurate and professional automatic monitoring. At the same time, combined with the alarm device, an automatic alarm effect is achieved when the oil-water separator is in a blocked state, which improves work efficiency and promotes the efficient operation of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a liquid level monitoring and warning device for an oil-water separator in one embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A partial enlarged view of middle A;

[0022] Figure 3 yes Figure 1 Section along BB;

[0023] Figure 4 yes Figure 1 Cross-section along CC.

[0024] In the figure:

[0025] 1- Grease trap; 2- Filter tank; 3- Oily and sewage inlet; 4- Oil; 5- Water; 12- Lower water outlet pipe; 11- Top plate hole; 13- Floor;

[0026] 6-fixed rod; 7-floating plate; 6', 8'-auxiliary holes; 8-vertical rod; 9-cross rod; 10-auxiliary plate; 14-controller; 15-data communication line; 16-laser rangefinder; 17-wireless network; 18-visual display terminal; 19-alarm device. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the liquid level monitoring and warning device for the oil-water separator proposed by the utility model in combination with the accompanying drawings and specific embodiments. The advantages and features of the utility model will become clearer according to the following description and claims. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0028] Please refer to Figure 1 , which is a front view of a liquid level monitoring and warning device for an oil-water separator in one embodiment of the utility model. Figure 1 As shown, the liquid level monitoring and warning device of the oil-water separator includes: a monitoring unit, a judgment unit and an alarm device 19, the monitoring unit monitors in real time the distance between the internal liquid level of the oil-water separator and the top plate of the oil-water separator; the judgment unit compares the distance obtained by the monitoring unit with a preset warning threshold to determine whether the interior of the oil-water separator is in a blocked state; wherein, when the distance is less than or equal to the preset warning threshold, it is determined that the interior of the oil-water separator is in a blocked state; when the distance is greater than the preset warning threshold, it is determined that the interior of the oil-water separator is in a normal working state; the alarm device 19 performs an alarm operation when the judgment unit determines that the interior of the oil-water separator is in a blocked state.

[0029] For details, please refer to Figure 1 and Figure 2The monitoring unit includes: a fixed rod 6, a floating plate 7, a vertical rod 8, a cross bar 9, an auxiliary plate 10, a controller 14 and a laser rangefinder 16. When in use, the floating plate 7 floats on the oily surface in the oil-water separator, the fixed rod 6 and the vertical rod 8 are parallel to each other, one end of the vertical rod 8 is vertically fixed to the floating plate 7, and the other end of the vertical rod 8 passes through the top plate of the oil-water separator and is vertically fixed to the cross bar 9; the fixed rod 6 passes through the floating plate 7, and its two ends are respectively vertically fixed to the bottom surface of the top plate and the bottom plate surface of the oil-water separator; the auxiliary plate 10 is used for the monitoring unit. The auxiliary plate 10 is arranged near the top plate of the oil-water separator, one end of the auxiliary plate 10 is vertically fixed to the fixed rod 6, and the other end of the auxiliary plate 10 is sleeved on the outside of the vertical rod 8; the laser rangefinder 16 is arranged at the bottom of the cross bar 9 to measure the distance d between the cross bar 9 and the top plate of the oil-water separator; the controller 14 obtains the distance hd between the internal liquid level of the oil-water separator and the top plate of the oil-water separator based on the distance h between the cross bar 9 and the floating plate 7 and the distance d between the cross bar 9 and the top plate of the oil-water separator. In this embodiment, the fixed rod 6 is a cylindrical rod, and the vertical rod 8 is a rod with a rectangular cross section.

[0030] In order to facilitate the work control of the monitoring unit and the display of monitoring results and data. Please continue to refer to Figure 1 The monitoring unit further includes: a visual display terminal 18, the controller 14 is connected to the laser rangefinder 16, the visual display terminal 18 and the alarm device respectively; wherein the controller 14 is connected to the laser rangefinder 16 via a data communication line 15 (i.e., wired connection), and the controller 14 is connected to the visual display terminal 18 and the alarm device 19 via a wireless network 17 (i.e., wireless connection). The controller 14 has the functions of receiving information, sending instructions, analyzing and judging, and is the center of the entire device, and is used to control the laser rangefinder 16, the alarm device 19, etc. to perform corresponding instruction operations, and can also receive ranging information fed back from the laser rangefinder 16, etc.

[0031] Specifically, based on the position of the fixed rod 6 being vertically fixed between the bottom surface of the top plate and the bottom plate surface of the oil-water separator, the vertical rod 8 establishes a connection with the fixed rod 6 based on the floating plate 7 and the auxiliary plate 10, so that when the internal oil and dirt liquid level of the oil-water separator changes, the vertical rod 8 can move up and down along the fixed rod 6 as the position of the floating plate 7 changes (that is, the fixed rod 6 guides the movement direction of the vertical rod 8).

[0032] For further information, please refer to Figure 3 , an auxiliary hole 8' adapted to the vertical rod 8 is opened on the auxiliary plate 10, and the vertical rod 8 can move up and down relative to the auxiliary hole 8'; please refer to Figure 4, the floating plate 7 is provided with an auxiliary hole 6' adapted to the fixed rod 6, and the floating plate 7 can move up and down along the fixed rod 6. Based on the auxiliary hole 8', the auxiliary plate 10 limits the distance between the vertical rod 8 and the fixed rod 6 and the range of motion, and also provides space for the vertical rod 8 to move up and down (that is, the vertical rod 8 is not clamped in the auxiliary hole 8', but the vertical rod 8 passes through the auxiliary hole 8' and can move up and down relative to the auxiliary plate 10, with freedom of movement); based on the auxiliary hole 6', the floating plate 7 limits the distance between the fixed rod 6 and the vertical rod 8 and the range of motion, and also provides space for the floating plate 7 to move up and down along the fixed rod 6 (that is, the fixed rod 6 is not clamped in the auxiliary hole 6'), thereby avoiding the occurrence of inaccurate measurement data due to the displacement of the vertical rod 8.

[0033] Furthermore, a top plate hole 11 adapted for the vertical rod 8 is opened on the top plate of the oil-water separator. Driven by the floating plate 7, the vertical rod 8 can move up and down relative to the top plate hole 11 as the oil level in the oil-water separator changes, so as to accurately obtain the distance between the internal liquid level of the oil-water separator and the top plate of the oil-water separator, thereby laying a data foundation for the subsequent judgment of whether the internal oil of the oil-water separator is blocked.

[0034] In this embodiment, the alarm device is preferably an alarm. Whether the alarm operation is performed here is determined based on the result of comparing the distance obtained by the monitoring unit with a preset warning threshold. The preset warning threshold is greater than the distance between the water outlet of the lower water outlet pipe 12 of the oil-water separator and the top plate of the oil-water separator.

[0035] In order to better understand the working principle of the liquid level monitoring and warning device of the oil-water separator of the utility model, the following is combined with Figures 1 to 4 , based on the actual scenario of the liquid level warning device being applied to the oil-water separator, the details are as follows:

[0036] Please refer to Figure 1 , understand the structure and working principle of the oil-water separator. Figure 1As shown, the oil-water separator includes: a grease trap 1, a filter tank 2 and an oily sewage inlet 3. The grease trap 1 is arranged at the bottom of the filter tank 2, wherein the filter tank 2 is closed on all sides and half-open at the bottom, and a screen is arranged at the opening. Usually, the oil-water separator at the construction site is generally arranged below the floor 13 (in this embodiment, the top plate of the oil-water separator is flush with the floor 13), one end of the oily sewage inlet 3 is connected to the kitchen oil sewage drain pipe at the construction site, and the other end is connected to the filter tank 2. When the oily sewage enters the filter tank 2, the solid particles are isolated by the screen of the filter tank 2, and the oil 4 and sewage 5 enter the grease trap 1. Since the density of water is greater than that of oil, the oil 4 floats on the surface of the sewage 5; after the oil 4 is isolated, the sewage 5 at the bottom enters the secondary grease trap through the lower outlet pipe 12 for secondary isolation.

[0037] like Figure 1 As shown, in this embodiment, the setting position of the liquid level monitoring and warning device relative to the oil-water separator is that the floating plate 7 is set on the surface of the oil stain 4 in the oil-water separator, one end of the vertical rod 8 passes through the auxiliary hole 8' and the top plate hole 11 and extends out of the top plate of the oil-water separator and is vertically fixed to the cross bar 9 located on the outside of the oil-water separator, the laser rangefinder 16, the controller 14 and the visual display terminal 18 are all located on the outside of the oil-water separator, and the remaining structures of the liquid level monitoring and warning device are all located inside the oil-water separator.

[0038] During the installation phase of the liquid level monitoring and warning device of the oil-water separator, it is necessary to first measure the distance h between the bottom surface of the cross bar 9 and the floating plate 7, and determine the preset warning threshold as the threshold for oil blockage that needs to be cleared to prevent oil overflow. The basis for setting the preset warning threshold is that it is necessary to consider that the blockage of oil may cause blockage of the lower water outlet pipe 12, so the preset warning threshold is slightly larger than the distance between the outlet of the lower water outlet pipe 12 and the top plate of the oil-water separator (in this embodiment, since the floor 13 is flush with the top plate of the oil-water separator, it is also equivalent to the distance from the outlet of the lower water outlet pipe 12 to the floor 13).

[0039] After the installation of the liquid level monitoring and warning device of the oil-water separator is completed, the controller 14 issues a "distance measurement" command to the laser rangefinder 16, and the laser rangefinder 16 measures the distance d (i.e., the distance between the bottom surface of the crossbar 9 and the top plate / floor 13 of the oil-water separator) and feeds it back to the controller 14. After receiving the feedback distance d information, the controller 14 compares and converts it with the distance h measured in advance to determine the distance hd between the internal liquid level of the oil-water separator and the top plate of the oil-water separator. The following assumes that the preset warning threshold is 200mm as an example, including the following two cases:

[0040] Case 1: When hd>200mm, it indicates that the grease trap 1 is in normal working condition. The controller 14 issues a "continue monitoring" command to the laser rangefinder 16, and does not issue a working command to the alarm device 19. At the same time, the monitoring results are sent to the cloud server through the wireless network 17, and the data is sent to the visual display terminal 18 for display.

[0041] Case 2: When hd≤200mm, it means that the grease trap 1 is blocked by too much oil and needs to be cleaned. At this time, the controller 14 sends a "warning alarm" to the alarm device 19. After receiving the command, the alarm device 19 executes the alarm operation "the oil is full, please clean it in time". At the same time, the monitoring results and alarm information are sent to the cloud server through the wireless network 17, and the data (monitoring results and alarm information) are sent to the visual display terminal 18 for display, and the alarm information is pushed to the project management personnel.

[0042] In summary, in the liquid level monitoring and warning device of the oil-water separator provided by the utility model, the distance between the internal liquid level of the oil-water separator and the top plate of the oil-water separator is obtained in real time based on the monitoring unit, so as to judge whether the interior of the oil-water separator is in a blocked state. The entire monitoring and judgment process utilizes information technology to transform the change of the liquid level of the oil-water separator from manual inspection to more accurate and professional automated monitoring. At the same time, combined with the alarm device, an automatic alarm effect is achieved when the oil-water separator is in a blocked state, thereby improving work efficiency and promoting the efficient operation of the project.

[0043] Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A liquid level monitoring and warning device for an oil-water separator, characterized in that: include: A monitoring unit, which monitors in real time the internal liquid level of the oil-water separator and the distance between the top plate of the oil-water separator; A judgment unit compares the distance obtained by the monitoring unit with a preset warning threshold to judge whether the interior of the oil-water separator is in a blocked state; wherein, when the distance is less than or equal to the preset warning threshold, it is judged that the interior of the oil-water separator is in a blocked state; when the distance is greater than the preset warning threshold, it is judged that the interior of the oil-water separator is in a normal working state; The alarm device (19) performs an alarm operation when the judgment unit judges that the interior of the oil-water separator is in a blocked state.

2. The liquid level monitoring and warning device for an oil-water separator according to claim 1, characterized in that: The monitoring unit comprises: a fixed rod (6), a floating plate (7), a vertical rod (8), a cross rod (9), an auxiliary plate (10), a controller (14), and a laser rangefinder (16); the fixed rod (6) and the vertical rod (8) are parallel to each other; one end of the vertical rod (8) is vertically fixed to the floating plate (7); the other end of the vertical rod (8) passes through the top plate of the oil-water separator and is vertically fixed to the cross rod (9); the fixed rod (6) passes through the floating plate (7), and its two ends are respectively vertically fixed to the bottom surface of the top plate and the bottom plate surface of the oil-water separator; the auxiliary plate (10) is arranged adjacent to the floating plate (7); The position of the top plate of the oil-water separator, one end of the auxiliary plate (10) is vertically fixed to the fixed rod (6), and the other end of the auxiliary plate (10) is placed on the outside of the vertical rod (8); the laser rangefinder (16) is arranged at the bottom of the cross bar (9) to measure the distance (d) between the cross bar (9) and the top plate of the oil-water separator; the controller (14) obtains the distance between the internal liquid level of the oil-water separator and the top plate of the oil-water separator based on the distance (h) between the cross bar (9) and the floating plate (7) and the distance (d) between the cross bar (9) and the top plate of the oil-water separator.

3. The liquid level monitoring and warning device for an oil-water separator according to claim 2, characterized in that: The auxiliary plate (10) is provided with an auxiliary hole adapted to fit the vertical rod (8), and the vertical rod (8) can move up and down relative to the auxiliary hole.

4. The liquid level monitoring and warning device for an oil-water separator according to claim 2, characterized in that: The floating plate (7) is provided with an auxiliary hole adapted to fit the fixing rod (6), and the floating plate (7) can move up and down along the fixing rod (6).

5. The liquid level monitoring and warning device for an oil-water separator according to claim 2, characterized in that: The monitoring unit further comprises: a visual display terminal (18), and the controller (14) is respectively connected to the laser rangefinder (16), the visual display terminal (18) and the alarm device.

6. The liquid level monitoring and warning device for an oil-water separator according to claim 5, characterized in that: The controller (14) is connected to the laser rangefinder (16) via a data communication line (15), and the controller (14) is connected to the visual display terminal (18) and the alarm device (19) via a wireless network (17).

7. The liquid level monitoring and warning device for an oil-water separator according to claim 2, characterized in that: A top plate hole (11) adapted for a vertical rod (8) is provided on the top plate of the oil-water separator. Driven by the floating plate (7), the vertical rod (8) can move up and down relative to the top plate hole (11) as the oil and dirt liquid level in the oil-water separator changes.

8. The liquid level monitoring and warning device for an oil-water separator according to claim 1, characterized in that: The alarm device is an alarm.

9. The liquid level monitoring and warning device for an oil-water separator according to claim 8, characterized in that: The preset warning threshold is greater than the distance between the water outlet of the lower water outlet pipe (12) of the oil-water separator and the top plate of the oil-water separator.

10. The liquid level monitoring and warning device for an oil-water separator according to claim 9, characterized in that: The preset warning threshold is 200mm.

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