CN212269497U - Detection unit, material level control system and water treatment tank - Google Patents

Abstract

Detection unit, level control system and water treatment tank relate to water purification treatment technical field. The detection unit comprises a shell, and an optical signal generator and an optical signal receiver which are arranged in the shell, wherein a pair of light-transmitting windows with opposite windows are arranged on the shell, one surface of each light-transmitting window faces the outside of the shell, and the other surface of each light-transmitting window faces the inside of the shell. The shell is also provided with a splitting surface, the splitting surface is a part of the upward outer surface of the shell, and the splitting surface is a self-top-down splitting surface. The level control system adopts the detection unit, and the water treatment tank adopts the level control system constructed by the detection unit. The method has the advantages of high detection accuracy and capability of tracking and monitoring the material level in real time.

Description

Detection unit, material level control system and water treatment tank

Technical Field

The utility model relates to a water treatment purifies part, control system and equipment, specifically speaking relates to detecting element, level control system and water treatment pond.

Background

The water treatment is a process for removing impurities, ammonia nitrogen, COD, total phosphorus, total nitrogen and ammonia nitrogen in raw water by physical, chemical, microbial and other methods, in the water treatment process, impurity clusters formed by the impurities in the raw water through flocculation, sedimentation and other treatment steps are precipitated to the bottoms of flocculation tanks, sedimentation tanks and other tanks to form sludge, when the sludge is accumulated to a certain thickness, the sludge is discharged through a sludge discharge device communicated with the bottom of the tank to prevent the sludge accumulation from causing blockage, so that the effluent turbidity exceeds the standard.

In order to ensure that the sediment is in a proper range, if the sediment is manually operated, human resources are consumed to increase the water treatment cost, and water resource waste and substandard water quality are caused due to the fact that misdischarge easily occurs, the discharge value is insufficient and the like.

In order to realize automatic sludge discharge, the utility model with the publication number of CN206649359U discloses a water treatment level control system and a water treatment system, wherein a detection unit composed of a light signal generator and a light signal receiver as main parts is used in the device and method for detecting the level of the sediment, the detection unit detects whether the light energy emitted by the light signal generator is normally received by the light signal receiver, i.e. whether there is a shelter of the light signal between the detection unit and the light signal receiver to realize the information interaction with the control unit, and a cleaning component is further provided to improve the reliability of the light signal reception. However, because the detection unit is left still underwater for a long time, the case is difficult to avoid that sludge and other attachments are accumulated near the light-transmitting window which cannot be cleaned by the cleaning component, so that the detection unit cannot accurately send a correct signal to the control unit, and on the other hand, the material level control system and the water treatment system still have the problems of insufficient flexibility and intelligence in monitoring and unsatisfactory material level judgment accuracy.

Disclosure of Invention

The utility model mainly aims at providing a detection unit which can improve the detection accuracy;

another object of the present invention is to provide a material level control system which is relatively accurate and can be monitored in real time;

the utility model also aims to provide a water treatment system constructed by the detection unit.

In order to realize above-mentioned main purpose, the utility model provides a detecting element includes the casing and installs light signal generator and the light signal receiver in the casing, is equipped with the relative a pair of printing opacity window of window on the casing, the one side orientation of printing opacity window the casing is outside, another side orientation inside the casing. The split surface is a part of the upward outer surface of the shell and is a split surface from top to bottom.

According to the scheme, the split surface is arranged on the upward outer surface of the shell of the detection unit and is a wall surface which is downward from top, namely the split tip is arranged upwards, so that attachments such as sludge can slide downwards along the split surface under the action of gravity, and the accumulation of the sludge and the like on the shell of the detection unit is effectively prevented.

The further proposal is that the splitting surface comprises a splitting surface which is positioned below the light-transmitting window. This scheme can make the mud of printing opacity window lower part pile up the significantly reduced, if the printing opacity window lower part produces pile up too much can shelter from the printing opacity window, and then blocks the signal light path.

Another further aspect is that the cleave plane comprises an upper cleave plane, the upper cleave plane being positioned above the light transmissive window. This scheme is used for preventing that the mud that contains the silk wadding from adhering to the detecting element casing, forms and hangs down and shelters from the signal light path.

A further proposal is that the shell is provided with a pair of cleaning punching openings, and each cleaning punching opening faces to one light-transmitting window. The time for jetting high-pressure gas or high-pressure water and the cleaning time can be set according to the program.

In order to achieve another object of the present invention, the material level control system provided by the present invention comprises a control unit and a detection unit, wherein the control unit receives a signal from the detection unit and controls the opening and closing of the sludge discharge device; the detection unit is the detection unit in any scheme; the detection device comprises a detection unit, a lifting device and a control unit, wherein the detection unit is fixed at the lower end of the lifting rod; the control unit controls the detection unit to ascend and descend according to the sludge level signal sent by the detection unit.

According to the scheme, the detection unit can lift along with the lifting rod to track and follow the sludge level, so that on one hand, the capacity of the level control system for monitoring the sludge level in real time is improved, on the other hand, the dropping capacity of attachments is improved in the follow-up process of the detection unit, and the attachments such as sludge can be dropped off the shell along the splitting surface.

The further proposal is that the lifting rod is a hollow pipe body, and the cavity is used for passing through a fluid pipeline and a cable.

Still another further scheme is that elevating gear includes motor and by the rotatory screw of motor drive, the upper segment of lifter is the lead screw with rotatory screw cooperation. The scheme has the advantages that the screw rotates relative to the base, and the screw only goes up and down relative to the base and does not rotate, so that the fluid pipeline and the cable in the cavity cannot be wound and stirred.

The other further proposal is that the lifting device comprises a motor and an output gear directly or indirectly driven by the motor, and the upper section of the lifting rod is a rack matched with the output gear. The advantage of this scheme is with a scheme, and the structure operation is more reliable.

Still another scheme is that the lifting device comprises a motor and a worm wheel driven by the motor, and the upper section of the lifting rod is a worm matched with the worm wheel. The advantage of this scheme is that the transmission is safe reliable relatively.

In order to realize the utility model discloses a still purpose, the utility model provides a water treatment pool includes detecting element, and this detecting element has adopted the detecting element in each above-mentioned scheme.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of a detection unit of the present invention;

FIG. 2 is a front view of the detection unit;

FIG. 3 is a sectional view A-A of FIG. 2;

fig. 4 is a partial enlarged view of B in fig. 3;

fig. 5 is a schematic structural view of a first embodiment of the water treatment tank of the present invention, wherein the detection unit is located at the lowest level;

FIG. 6 is a state diagram of the sensing unit of FIG. 5 as it steps up to or down from the highest level;

fig. 7 is a schematic structural view of a lifting device in a first embodiment of the water treatment tank of the present invention;

fig. 8 is a schematic structural view of a lifting device in a second embodiment of the water treatment tank of the present invention;

fig. 9 is a left side view of fig. 8, with a detection unit of a lower end of the lift lever omitted in fig. 5;

fig. 10 is a schematic structural view of a lifting device in a third embodiment of the water treatment tank of the present invention;

fig. 11 is a left side view of fig. 10, and the motor and the detection unit of the lower end of the lift lever are omitted in fig. 11.

The present invention will be further described with reference to the following embodiments and the accompanying drawings.

Detailed Description

First embodiment of the detection Unit

Referring to fig. 1 and 2, the detecting unit 4 has a housing 41 projected as an elliptical ring on a vertical plane, for example, the vertical plane of the front view shown in fig. 2 is a vertical plane, wherein a pair of light-transmitting windows 42 are oppositely disposed on a pair of inner annular surfaces, the light-transmitting windows 42 are flat mirrors or lenses, the lenses can make the signal intensity of the transmitted light signal relatively higher, a cleaning punch 43 is disposed above each light-transmitting window 42, a light signal generator is fixed at a position of one light-transmitting window 42 in the housing 41, and a light signal receiver is fixed at a corresponding position of the other light-transmitting window 42.

Referring to fig. 1, 2, 3 and 4, the upward outer surface of the housing 41 according to the present invention refers to a portion of the outer surface facing upward, which is an acute angle between a normal of the outer surface and a normal of a vertical axis (Z axis), in this example, there are two outer surfaces, one outer surface is a lower splitting surface 44, the lower splitting surface 44 is shown in fig. 10 as a split with an upward split tip, the other outer surface is an upper splitting surface 45, the upper splitting surface 45 is also shown in fig. 11 as a split with an upward split tip, the profile design with the upward split tip facilitates the sludge to slide down along the splitting surface by gravity, so that the sludge accumulation can be effectively prevented from causing the detection unit 4 to send an erroneous level signal to the control unit.

Second embodiment of the detection Unit

The difference between this example and the previous example is that the front view of the housing 41 is a circular ring.

Third embodiment of the detection Unit

The difference of this embodiment is that the front view of the housing 41 is a rectangular ring, a pair of light-transmitting windows 42 can be disposed on the vertical surface as in the first embodiment, or on the upper and lower opposite surfaces, when disposed on the upper and lower opposite surfaces, a pair of cleaning punches 43 can be disposed on both sides of the lower light-transmitting window 42, and the lower light-transmitting window 42 can be disposed in an outer convex arc shape, or along the profile of the lower splitting surface 44.

Fourth embodiment of the detection Unit

The difference between this example and the first example is that the lower end of the housing 41 is open to form an inverted U-shape, and only the upper splitting surface 45 but not the lower splitting surface 44 is formed on the housing 41.

The level control system of the present invention is used in a water treatment tank, and the embodiments of the level control system will be described together in the water treatment tank and the embodiments.

In the following description of the embodiments of the water treatment tank, only the structures closely related to the present invention will be described, and those skilled in the art can fully refer to the prior art to implement other structures in the water treatment tank, such as a chemical dosing device, a sedimentation device placed in a sedimentation tank, and the like. In the water treatment pond, need arrange mud to flocculation basin, sedimentation tank at least, the utility model discloses a level control system can be arranged in flocculation basin and/or sedimentation tank, still can be arranged in other ponds that need to arrange mud, explains with the row mud to the sedimentation tank as the example below.

First embodiment of a Water treatment tank

Referring to fig. 5, the water treatment tank has a settling zone 1 and a level control system having a control unit 2, a lifting device 3, a sensing unit 4, a mud valve 5 and a gas valve 6, the lifting device 3 having a lifting rod 31 made of a hollow tube body for passing a fluid pipe 61 and a cable 22, the sensing unit 4 being fixed to a lower end of the lifting rod 31. The control unit 2 controls the opening and closing of the air valve 6 through the cable 21, and when the air valve 6 is opened, high-pressure air or high-pressure water is sprayed out of the cleaning punching opening 43 through the fluid pipeline 61 to clean light-shielding attachments on the light-transmitting window. The control unit 2 interacts information with the detection unit 4 through the cable 22, obtains position information of the lifting rod 31 through the cable 23, controls the lifting of the lifting device, and controls the opening and closing of the mud valve 5 through the cable 34. The sludge discharge valve 5 is used for opening and closing a sludge discharge pipeline arranged at the bottom of the pool in the sedimentation area 1, the lowest material level 7 of the sludge is slightly higher than a sludge discharge port of the sludge discharge pipe, so that water resources can be saved to the maximum extent on the premise of meeting the water quality, and the position of the highest material level 8 is determined after the pool depth, the source water sludge containing condition, the effluent water quality requirement, the sludge discharge period and other factors are comprehensively considered. The height difference between the highest level 8 and the lowest level 7 can be reflected on the distance of the up-and-down movement of the lifting rod 31, so that the vertical coordinate of the optical signal receiver of the detection unit 4 at any moment can be fed back to the control unit 2 through the state of the lifting rod 31, and can also be converted through the action of the motor of the lifting device 3, for example, the motor adopts a servo motor or a stepping motor, and the height conversion is carried out through calculating the rotation angle, the gear ratio and the screw pitch of the motor. And the rotation angle of the driving part can be accurately controlled to 2-360 degrees, and the speed can be accurately controlled to 1-500 r/min.

Referring to fig. 7, limited by the drawings, for the sake of clarity, the lifting rod 31 is shown by axial fracture, the upper section thereof is a lead screw 312, and the lower end 311 thereof is fixedly connected with the detection unit 4. The lifting device 3 is internally provided with a servo motor 32 and a reduction box 33 which are fixed on a base, a driving gear 34 which is connected with the servo motor 32 drives a driven gear 35 which is used as a rotating screw nut, a screw rod 32 is in threaded fit with the driven gear 35, a sleeve which is fixed on the base is omitted in figure 3, the sleeve is in clearance fit with the lifting rod 31 and limits the lifting rod 31 to rotate relative to the base and only can lift, and the vertical distance of the lifting can be accurately obtained by actual measurement or the conversion of a screw pitch, the reduction ratio and the angle of positive and negative rotation of the servo motor 32.

Second embodiment of a water treatment tank

The difference between this example and the previous example is the construction of the lifting device 3 in the level control system, see fig. 8 and 9, fig. 9 being a left side view of fig. 8 and omitting the sensing unit 4, the upper section of the lifting rod 31 being a toothed rack 313 and a stepper motor 36 being used to drive the reduction gearbox 33.

Third embodiment of a water treatment tank

Referring to fig. 10 and 11, fig. 11 is a left side view of fig. 10, and omits a detection unit 4 and a stepping motor 36, and the difference between this example and the first example is also the structure of the lifting device 3 in the level control system, the upper section of the lifting rod 31 is a worm 314, and a stepping motor 36 is used to drive a worm wheel 37, and the worm wheel 37 drives the lifting rod 31 to lift.

Other embodiments of the water treatment basin

In the three embodiments of the above water treatment tank, the detecting unit 4 adopts the first embodiment of the detecting unit, obviously, the detecting unit of the present invention can be adopted in any of the second to fourth embodiments of the detecting unit, and the purpose of the water treatment tank of the present invention can be realized equally.

Claims (10)

1. The detection unit comprises a shell, and an optical signal generator and an optical signal receiver which are arranged in the shell, wherein the shell is provided with a pair of light-transmitting windows with opposite windows, one surface of each light-transmitting window faces the outside of the shell, and the other surface of each light-transmitting window faces the inside of the shell;

the method is characterized in that:

and the splitting surface is a part of the upward outer surface of the shell and is a splitting surface from top to bottom.

2. The detection unit of claim 1, wherein:

the splitting surface comprises a splitting surface which is positioned below the light-transmitting window.

3. The detection unit of claim 1, wherein:

the splitting surface comprises an upper splitting surface, and the upper splitting surface is positioned on the light-transmitting window.

4. The detection unit according to any one of claims 1 to 3, characterized in that:

the shell is provided with a pair of cleaning punching openings, and each cleaning punching opening faces one light-transmitting window.

5. The material level control system comprises a control unit, a sludge discharge device and a detection unit, wherein the control unit receives a signal of the detection unit and controls the opening and closing of the sludge discharge device;

the method is characterized in that:

the detection unit is the detection unit of any one of claims 1 to 4;

the lifting device comprises a lifting rod, and the detection unit is fixed at the lower end of the lifting rod;

the control unit controls the detection unit to ascend and descend according to the level signal of the sludge sent by the detection unit.

6. The level control system according to claim 5, wherein:

the lifting rod is a hollow pipe body, and the cavity is used for passing through a fluid pipeline and a cable.

7. The level control system according to claim 5, wherein:

the lifting device comprises a motor and a worm wheel driven by the motor, and the upper section of the lifting rod is a worm matched with the worm wheel.

8. The level control system according to claim 5, wherein:

the lifting device comprises a motor and a rotating nut driven by the motor, and the upper section of the lifting rod is a lead screw matched with the rotating nut.

9. A level control system as claimed in claim 5, wherein:

the lifting device comprises a motor and an output gear directly or indirectly driven by the motor, and the upper section of the lifting rod is a rack matched with the output gear.

10. A water treatment system comprising a detection unit;

the method is characterized in that:

the detection unit is the detection unit of any one of claims 1 to 4.

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