Liquid level detection device for sewage recovery treatment

Abstract

The utility model discloses a liquid level detection device for sewage recovery treatment, which comprises a measuring tube and a throw-in type liquid level meter, the measuring tube is vertically inserted into a mixing water tank, and a probe of the throw-in type liquid level meter extends into the measuring tube; a flow guide opening is formed in the bottom of the measuring pipe. The throw-in type liquid level meter is arranged in the measuring pipe, the through hole is formed in the surface of the measuring pipe, and the pipe head is arranged, so that the water level height is consistent, the measuring deviation caused by high water flow speed is eliminated, foreign matters are intercepted outside the measuring pipe while water circulation is realized through the necking, suspended matters in water in the measuring pipe are reduced, and the measuring accuracy is improved. The interference of foreign matters on the throw-in type liquid level meter is reduced, the measurement accuracy is improved, the liquid level of the mixed water tank can be accurately displayed on an operation picture of an operation room, and the problem of measurement errors caused by the fact that sludge blocks a pipeline or the foreign matters enter the pipeline can be further prevented. The problem that pipeline filter holes are difficult to clean after being blocked is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level detection, in particular to a liquid level detection device for sewage recycling and treatment. Background Art

[0002] Due to environmental protection requirements for rainwater and sewage separation, the underground sewage system of the smelting workshop has been transformed. Domestic wastewater and rainwater are collected in the water treatment mixing pool after treatment. As a result, the liquid level in the mixing pool increases every day, and the level meter fails. The instantaneous flow rate during quenching of furnace No. 1 is about 10,000 cubic meters per hour, while the maximum flow rate of the mixing pool lifting pump to the high-level water tank is 6,500 cubic meters per hour. When producing quenching plates, there is a risk of submerging the distribution box, electric valve, ultrasonic level meter and other equipment under the pool; and the level meter is installed at the lowest position, and is often damaged by water.

[0003] In the prior art, Rosemount ultrasonic flowmeters are usually used in mixing water tanks. The installation position of the liquid level meter is at the lowest level of the mixing water tank. The water level is often too high, and the instrument is damaged by water ingress. Using a submersible liquid level meter can solve the above problem well, but the submersible liquid level meter is easily affected by the water flow speed and foreign matter, resulting in measurement errors. The liquid level cannot be accurately grasped, which will bring safety hazards to the smelting workshop.

[0004] Therefore, the utility model is to develop a liquid level detection device for sewage recycling and treatment to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a liquid level detection device for sewage recycling and treatment in view of the deficiencies of the above-mentioned prior art, wherein an immersion type liquid level meter is placed inside a measuring tube, a through hole is opened on the surface of the measuring tube, and a pipe head is arranged to make the water level height consistent, thereby eliminating the measurement deviation caused by the fast water flow speed, and while the water body is circulated by the narrowing, foreign matter is intercepted outside the measuring tube, thereby reducing the suspended matter in the water body inside the measuring tube, reducing the interference of foreign matter on the immersion type liquid level meter, and improving the measurement accuracy, so as to solve the problems existing in the prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A liquid level detection device for sewage recycling and treatment comprises a measuring tube and an immersion liquid level meter, wherein the measuring tube is vertically inserted into a mixing water tank, and a probe of the immersion liquid level meter extends into the measuring tube;

[0008] The bottom of the measuring tube is provided with a flow guide port, the inner diameter of which is smaller than the inner diameter of the measuring tube, the outer wall of the measuring tube is provided with a plurality of evenly distributed through holes, and the through holes are provided with a pipe head in an interference fit, so as to connect the water bodies on both sides of the measuring tube;

[0009] A limit assembly is provided at the top of the measuring tube, which is used to position the transmission cable of the immersion liquid level meter at the axis center of the measuring tube and to protect the immersion liquid level meter.

[0010] Preferably, the measuring tube comprises a metal tube unit and a bottom receiving tube, the bottom receiving tube is located at the bottom of the measuring tube, and the bottom receiving tube and the metal tube unit are mounted by a combination of a flange and connecting bolts.

[0011] Preferably, the number of the metal tube units is set to be multiple, and two adjacent metal tube units are installed by a combination of flanges and connecting bolts.

[0012] Preferably, the guide port is opened at the axis of the bottom receiving tube, and the guide port is configured to be funnel-shaped.

[0013] Preferably, the limit assembly includes multiple sliding rods, at least two sets of sliding sleeves are slidably connected to the outer sides of the sliding rods, and the sliding sleeves are penetrated and threaded with limit bolts for tightening the sliding rods, and the multiple sliding sleeves at the same horizontal height are commonly connected with limit rings.

[0014] Preferably, the axis lines of the plurality of limiting collars are co-linearly arranged, and the outer surfaces of the limiting collars are wrapped with a soft buffer layer for protecting the probe and transmission cable of the submersible liquid level meter.

[0015] Preferably, a plurality of slide bars are fixed together on a flange plate, and the flange plate and the top end of the measuring tube are assembled and mounted via a flange and connecting bolts.

[0016] Preferably, the tube head is composed of a straight tube and a necking, and the straight tube and the necking are integrally formed;

[0017] The tube head is made of transparent plastic material.

[0018] Preferably, a mounting bracket is sleeved on the outer side of the measuring tube, and the measuring tube is fixed to the external structure through the mounting bracket.

[0019] Preferably, a connecting frame is installed on one side of the main body end of the immersion liquid level meter, and the connecting frame is installed on the external structure through a lifting cylinder, so that the probe height of the immersion liquid level meter can be adjusted.

[0020] The utility model has the following beneficial effects:

[0021] By placing the immersion level meter inside the measuring tube, opening a through hole on the surface of the measuring tube, and setting a pipe head, the water level height is made consistent, the measurement deviation caused by the fast water flow speed is eliminated, and the foreign matter is intercepted outside the measuring tube while the water body is circulated by shrinking the mouth, the suspended matter in the water body inside the measuring tube is reduced, and the interference of foreign matter on the immersion level meter is reduced, the measurement accuracy is improved, and the liquid level of the mixing pool can be accurately displayed on the operation screen of the operation room. It can also prevent the measurement error caused by silt blocking the pipeline or foreign matter entering the pipeline. In addition, the pipe head is easy to clean, which solves the problem of difficulty in cleaning after the filter hole of the pipeline is blocked;

[0022] The immersion level meter inside the measuring tube is installed and matched through the limit assembly and the soft buffer layer, the probe and the transmission cable are protected, the safety of the immersion level meter is improved, the service life of the device is extended, and the maintenance cost is reduced. In addition, a fixed measuring tube and an immersion level meter with adjustable height are set, the probe is lowered and the length of the output end of the lifting cylinder is adjusted so that the probe is lowered to the bottom of the mixing pool and close to the diversion port position, so as to improve the measurement accuracy and feed back the monitoring data to the monitoring end. The staff can intuitively see the water level monitoring display, drain and replenish the mixing pool in time, ensure the safe commissioning of the equipment, ensure the normal production rhythm, prevent the equipment from being flooded and cause equipment accidents, and affect normal production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first-view stereoscopic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a stereoscopic diagram of the overall structure of the utility model from a second viewing angle;

[0025] Figure 3 This is a first-view stereoscopic diagram of the cutaway structure of the utility model;

[0026] Figure 4 This is a stereoscopic diagram of the cutaway structure of the utility model from a second viewing angle;

[0027] Figure 5 This is the front view of the cutaway structure of the utility model;

[0028] Figure 6 It is a three-dimensional diagram of the connection structure of the limit assembly and the flange of the utility model.

[0029] Among them are:

[0030] Measuring tube-1; immersion level gauge-2; flow guide port-3; pipe head-4; limit assembly-5; mounting frame-6; connecting frame-7; flange-8;

[0031] Metal pipe unit-11; bottom receiving pipe-12; flange-13; connecting bolt-14;

[0032] Straight tube-41; Narrowed end-42;

[0033] Sliding rod-51; sliding sleeve-52; limiting bolt-53; limiting collar-54. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0035] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0036] like Figure 1-6 As shown, a liquid level detection device for sewage recycling treatment includes a measuring tube 1 and a submersible liquid level meter 2. The measuring tube 1 is vertically inserted into a mixing water tank, and the probe of the submersible liquid level meter 2 extends into the measuring tube 1. More specifically, the probe of the submersible liquid level meter 2 and its transmission cable extending into the measuring tube 1 are placed at the axial center of the measuring tube 1. This effect is achieved by a limit assembly 5 provided at the top of the measuring tube 1, so that the transmission cable of the submersible liquid level meter 2 is located at the axial center of the measuring tube 1, and the submersible liquid level meter 2 is protected.

[0037] A guide port 3 is provided at the bottom of the measuring tube 1, and the inner diameter of the guide port 3 is smaller than the inner diameter of the measuring tube 1. A number of evenly distributed through holes are opened on the outer wall of the measuring tube 1, and a pipe head 4 is interference-fitted in the through hole to connect the water bodies on the inside and outside of the measuring tube 1; the guide port 3 cooperates with the through hole to ensure that the water level height inside and outside the measuring tube 1 is consistent, and eliminates the measurement deviation caused by the fast water flow speed, so that the liquid level of the mixing water tank can be accurately displayed on the operation screen of the operating room, and further prevents the measurement error caused by silt clogging the pipeline or foreign matter entering the pipeline.

[0038] Specifically, the measuring tube 1 includes a metal tube unit 11 and a bottom receiving tube 12. The bottom receiving tube 12 is located at the bottom of the measuring tube 1, and the bottom receiving tube 12 and the metal tube unit 11 are assembled and installed by a flange 13 and a connecting bolt 14. The number of metal tube units 11 is set to multiple, and two adjacent metal tube units 11 are assembled and installed by a flange 13 and a connecting bolt 14. The number of metal tube units 11 is selected according to needs. The metal tube unit 11 and the bottom receiving tube 12 are standard parts and are made of galvanized pipes. When in use, a plurality of metal tube units 11 are combined to facilitate application to different working conditions. According to the actual needs of the mixing pool depth and liquid level monitoring, the length of the measuring tube 1 is controlled so that the measuring tube 1 can always be above the liquid level surface to ensure the safety of the immersion level meter 2.

[0039] Specifically, the guide port 3 is opened at the axis of the bottom receiving tube 12, and the guide port 3 is set to be funnel-shaped to reduce the collision of the probe of the immersion level meter 2, and when there is foreign matter inside the measuring tube 1, it is convenient to discharge it from the funnel-shaped guide port 3.

[0040] Specifically, the limit assembly 5 includes multiple sliding rods 51, at least two groups of sliding sleeves 52 are slidably connected to the outer side of the sliding rods 51, and the sliding sleeves 52 are penetrated and threadedly connected with limit bolts 53 for tightening the sliding rods 51, and multiple sliding sleeves 52 located at the same horizontal height are commonly connected with limit rings 54; the axial lines of the multiple limit rings 54 are collinearly arranged, and the outer surface of the limit rings 54 is wrapped with a soft buffer layer for protecting the probe and transmission cable of the submersible liquid level meter 2, thereby improving the working safety of the submersible liquid level meter 2, extending the service life of the device, and reducing maintenance costs.

[0041] Specifically, a plurality of slide bars 51 are fixed together on a flange 8 , and the flange 8 and the top end of the measuring tube 1 are assembled and installed via a flange 13 and connecting bolts 14 .

[0042] Specifically, the pipe head 4 is composed of a straight pipe 41 and a necked opening 42, and the straight pipe 41 and the necked opening 42 are integrally formed; the pipe head 4 is made of transparent plastic material, and the pipe head 4 is inserted into each through hole, and the straight pipe 41 is interference fit at the through hole, and the necked opening 42 realizes water circulation, while foreign matter is intercepted outside the measuring tube 1, reducing suspended matter in the water inside the measuring tube 1, reducing interference of foreign matter on the immersion liquid level meter 2, and improving measurement accuracy. When the pipe head 4 is blocked and needs to be cleaned, the pipe head 4 can be directly pushed off from the outside, which is convenient for cleaning and solves the problem of difficulty in cleaning after the pipeline filter hole is blocked.

[0043] Specifically, a mounting bracket 6 is sleeved on the outer side of the measuring tube 1 , and the measuring tube 1 is fixed to the external structure through the mounting bracket 6 .

[0044] Specifically, a connecting frame 7 is installed on one side of the main unit end of the immersion liquid level meter 2, and the connecting frame 7 is installed on the external structure through a lifting cylinder, so that the probe height of the immersion liquid level meter 2 can be adjusted. According to the depth of the mixing water tank, the immersion liquid level meter 2 is reasonably installed so that the bottom end of the probe is close to the bottom of the mixing water tank, thereby improving the monitoring accuracy.

[0045] Working principle: According to the depth and liquid level of the mixing pool, a certain length of measuring tube 1 is installed, and a immersion level meter 2 is installed. For example, the safe liquid level height of the mixing pool under one working condition is 2.5m. The 3m measuring tube 1 is assembled through the prefabricated metal tube unit 11 and the bottom receiving tube 12. The tube head 4 is inserted into the through hole, and the measuring tube 1 is firmly fixed on the ladder through the mounting bracket 6. The probe and transmission cable of the immersion level meter 2 first pass through the axis of the limit assembly 5, and then enter the measuring tube 1. The probe is lowered and the length of the output end of the lifting cylinder is adjusted to make the probe drop to the bottom of the mixing pool. At this time, the probe is connected to the bottom of the mixing pool. Near the diversion port 3, standardize the wiring and fix it before starting monitoring; the water on both sides of the measuring tube 1 is connected, that is, the water level is consistent, eliminating the measurement deviation caused by the fast water flow speed, and using the straight tube 41 to interfere with the through hole, and the constricted mouth 42 to achieve water circulation, while foreign matter is intercepted outside the measuring tube 1, reducing the suspended matter in the water inside the measuring tube 1. When the pipe head 4 is blocked and needs to be cleaned, the pipe head 4 can be directly pushed off from the outside, which is convenient for cleaning. It can also prevent silt from clogging the pipeline or foreign matter from entering the pipeline, causing measurement errors, so that the liquid level of the mixing water tank can be accurately displayed on the operation screen in the operation room.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A liquid level detection device for sewage recycling and treatment, characterized in that: It comprises a measuring tube (1) and a submersible liquid level meter (2), wherein the measuring tube (1) is vertically inserted into a mixing water tank, and a probe of the submersible liquid level meter (2) extends into the interior of the measuring tube (1); The bottom of the measuring tube (1) is provided with a flow guide port (3), the inner diameter of the flow guide port (3) is smaller than the inner diameter of the measuring tube (1), the outer wall of the measuring tube (1) is provided with a plurality of evenly distributed through holes, and a pipe head (4) is interference-fitted in the through holes, for connecting water bodies on both sides of the measuring tube (1); A limit assembly (5) is provided at the top end of the measuring tube (1) for positioning the transmission cable of the immersion liquid level meter (2) at the axis of the measuring tube (1) and protecting the immersion liquid level meter (2).

2. A liquid level detection device for sewage recycling and treatment according to claim 1, characterized in that: The measuring tube (1) comprises a metal tube unit (11) and a bottom receiving tube (12); the bottom receiving tube (12) is located at the bottom end of the measuring tube (1), and the bottom receiving tube (12) and the metal tube unit (11) are assembled and installed via a flange (13) and connecting bolts (14).

3. A liquid level detection device for sewage recycling and treatment according to claim 2, characterized in that: The number of the metal tube units (11) is set to be multiple, and two adjacent metal tube units (11) are assembled and installed via flanges (13) and connecting bolts (14).

4. A liquid level detection device for wastewater recycling and treatment according to claim 2, characterized in that: The guide port (3) is opened at the axis of the bottom receiving tube (12), and the guide port (3) is configured in a funnel shape.

5. A liquid level detection device for wastewater recycling and treatment according to claim 1, characterized in that: The limit assembly (5) comprises a plurality of slide bars (51), at least two sets of slide sleeves (52) are slidably connected to the outside of the slide bars (51), and the slide sleeves (52) are penetrated by and threadedly connected with limit bolts (53) for tightening the slide bars (51), and a plurality of slide sleeves (52) at the same level are commonly connected with limit collars (54).

6. A liquid level detection device for wastewater recycling and treatment according to claim 5, characterized in that: The axis lines of the plurality of limiting collars (54) are arranged colinearly, and the outer surfaces of the limiting collars (54) are wrapped with a soft buffer layer for protecting the probe and transmission cable of the immersion liquid level meter (2).

7. A liquid level detection device for wastewater recycling and treatment according to claim 5, characterized in that: A plurality of slide bars (51) are fixed together on a flange (8), and the flange (8) and the top end of the measuring tube (1) are assembled and mounted via a flange (13) and connecting bolts (14).

8. A liquid level detection device for wastewater recycling and treatment according to claim 1, characterized in that: The pipe head (4) is composed of a straight pipe (41) and a necked opening (42), and the straight pipe (41) and the necked opening (42) are integrally formed; The tube head (4) is made of a transparent plastic material.

9. A liquid level detection device for wastewater recycling and treatment according to claim 1, characterized in that: A mounting frame (6) is sleeved on the outer side of the measuring tube (1), and the measuring tube (1) is fixed to the external structure via the mounting frame (6).

10. A liquid level detection device for wastewater recycling and treatment according to claim 1, characterized in that: A connecting frame (7) is installed on one side of the main machine end of the immersion liquid level meter (2), and the connecting frame (7) is installed on the external structure via a lifting cylinder, so that the height of the probe of the immersion liquid level meter (2) can be adjusted.

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