CN102600653A - Sewage filter plant - Google Patents

Abstract

The invention discloses a sewage filtering device, which comprises a bracket, a water inlet, a turntable, a rotating shaft, a water flushing sprinkler, a drive motor and a reducer. In the present invention, a set of two convertible filters is installed in the water pump suction pipeline, and the set value of the water pressure is automatically detected by the pressure sensor. When the filter screen is blocked, the filter screen is automatically replaced and cleaned. The whole process is completed in an instant, and the water pump No downtime. The device has the advantages of simple structure, low cost, low power consumption, can effectively avoid dirt blockage, and ensure stable operation of the system.

Description

A sewage filter device

technical field

The invention belongs to the field of sewage treatment equipment and relates to a sewage solid matter filtering device.

Background technique

Urban sewage is an excellent and eye-catching "cold/heat source". The heat (cold) energy stored in urban sewage discharge can be utilized through heat pump technology to meet the needs of building air conditioning and domestic hot water to achieve energy conservation and emission reduction. For purposes, the system is called a sewage source heat pump system.

During the use of the sewage source heat pump system, the sewage must be strictly filtered to reach the state required by the heat pump heat exchange device. The composition of urban sewage is complex, and the size span of the dirt is large. It is easy to accumulate scale in the heat exchanger and block the filter screen. The dirt is usually corrosive and will damage the equipment if it is not removed in time. Once the heat exchange equipment fails to work, the entire system will be completely paralyzed.

The traditional sewage filtration device uses two sets of identical water pump systems, which work alternately, one of which absorbs water and the other drains, and the drainage pump flushes the dirt at the suction port. thing. There are three major disadvantages: first: complex structure, high cost, and large power consumption (using water pump to flush); second: the dirt after flushing remains in the pipeline, and the second time may absorb and block the filter; third: due to There is backflow of water in the pipeline, which will lose part of the energy. Therefore, it is necessary to rationally design sewage filtration devices to ensure system stability and reduce investment costs.

Contents of the invention

Technical problem: The present invention provides a sewage filtering device that can replace the filter screen during the operation of the water pump, has high efficiency in filtering sewage impurities, low system cost and stable operation.

Technical solution: The sewage filtering device of the present invention includes a support, a water inlet, a turntable, a rotating shaft, a water flushing sprinkler, a drive motor and a reducer; the support is provided with an upper support plate and a lower support plate, and the turntable is horizontally arranged on the Between the upper support plate and the lower support plate, the rotating shaft passes through the axis center of the turntable, and the upper and lower ends of the rotating shaft are respectively arranged on the upper support plate and the lower support plate; On the lower support plate, the water inlet of the suction pipe is flush with the upper side of the turntable, and the water outlet of the water inlet is flush with the lower side of the turntable; Center symmetrical filter net, the size of the filter net matches the water suction pipe, the filter net can be placed between the water suction pipe and the water inlet with the rotation of the turntable, at this time, other filter nets are in the flushing position, and the water flushes the sprinkler It is installed on the upper support plate, corresponding to the washing station of the filter screen, and the part corresponding to the washing station on the lower support plate is provided with a sewage tank; the driving motor and the reducer are located on the side of the turntable, and the drive motor drives the turntable through the reducer.

In the present invention, a ring gear is arranged on the outer edge of the turntable, and the driving gear arranged on the speed reducer meshes with the ring gear. the

The device of the present invention is to install a set of convertible multiple filter nets in the suction pipeline of a water pump system, and control the water pressure setting value (the pressure rises after the filter is blocked) detected by the pressure sensor installed at the water pump suction port. When the turntable rotates, when the turntable turns over a certain angle, the corresponding proximity switch is set to work, the turntable stops working, the positions of the two filter screens are exchanged, and the water flushing pump starts to work. The whole work is in the state of changing the screen without stopping the machine. The blocked filter screen is transferred to the outside of the pipeline for cleaning, and the dirt is discharged outside the pipe. At the same time, the cleaned filter screen is transferred to the water pump suction port, and the water pump works normally. The whole process is completed in an instant. , without shutting down the pump.

Beneficial effect: compared with the prior art, the present invention has the following advantages:

1. The present invention adopts double filters, controls the filter device to stop the machine through the water pressure setting value detected by the pressure sensor installed at the suction port of the water pump, and when a filter is blocked, it is replaced instantaneously, ensuring the uninterrupted operation of the system;

2. The present invention uses a single water pump system instead of the original double water pump system, which can save more than 45% of electricity (the power of the turntable motor and the water flushing motor is very small);

3. Teflon seal is used between the turntable and the upper and lower support plate brackets of the present invention, which can automatically adjust the sealing gap;

4. The invention converts the clogged filter screen to the outside of the pipeline for cleaning, and the dirt is discharged outside the pipe to avoid the accumulation of dirt;

5. The invention has the advantages of simple structure, convenient replacement and simple processing method.

The device of the present invention changes the structure of the filter at the suction port of the sewage pump, so that the filter screen can be replaced without stopping the operation of the sewage pump, and the efficiency of filtering impurities in sewage can be improved, so that the flow medium in the filter at the suction port of the sewage pump is in a state required by the standard. Improve working conditions. Of course, the present invention can also be used in other sewage treatment systems. the

Description of drawings

Fig. 1 is the front structure schematic diagram that device of the present invention is installed on the water pump pipe section;

Fig. 2 is the plane sectional view of Fig. 1;

Figure 3 is a schematic diagram of the electrical control.

In the figure, there are: water pump 1, water suction pipe 2, turntable 3, water inlet 4, underground soil layer 5, sewage tank 6, lower support plate 7, bracket 8, screw 9, middle support plate 10, driving gear 13, upper support plate 14. Reducer 15, drive motor 16, water flushing sprinkler 17, rotating shaft 18, pressure sensor 19, sewage pipe 20, gasket 21, proximity switch 22, induction magnet 23, filter screen 24, ring gear 25, water pump motor 26. The water flushing motor 28, the pressure sensor controls the normally open contact 29, the proximity switch controls the normally open contact 30, the proximity switch controls the normally closed contact 31, and the flushing station 32. the

Detailed ways

The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

The sewage filtering device of the present invention comprises a support 8, a water inlet 4, a turntable 3, a rotating shaft 18, a water flushing sprinkler 17, a drive motor 16 and a reducer 15; the support 8 is provided with an upper support plate 14 and a lower support plate 7 , the rotating disk 3 is horizontally arranged between the upper supporting plate 14 and the lower supporting plate 7, the rotating shaft 18 passes through the axis of the rotating disk 3, and the upper and lower ends of the rotating shaft 18 are respectively arranged on the upper supporting plate 14 and the lower supporting plate 7; 2 corresponds to the water inlet 4 up and down, and is arranged on the upper support plate 14 and the lower support plate 7 respectively. The lower side of the disk is flush; the disk surface of the turntable 3 is provided with a plurality of filter screens 24 symmetrical to the axis of the turntable 3. The rotation of 3 is placed between the water suction pipe 2 and the water inlet 4. At this time, other filter screens 24 are in the flushing station 32, and the water flushing sprinkler 17 is arranged on the upper support plate 14, which is connected with the flushing station 32 of the filter screen 24. Correspondingly, the part corresponding to the washing station 32 on the lower support plate 7 is provided with a sewage tank 6; the drive motor 16 and the reducer 15 are located on one side of the turntable 3, and the outer edge of the turntable 3 is provided with a ring gear 25, and the reducer 15 The drive gear 13 provided on the top meshes with the ring gear 25, and the drive motor 16 drives the turntable 3 through the reducer 15.

In the present invention, the whole mechanism is arranged on the bracket 8, the water pump suction port 4 is connected with the sewage pipeline 20, and the asbestos rubber sealing gasket 21 prevents leakage at the joint between the water pump suction port 4 and the sewage pipeline 20, and the sewage pipeline 20 is buried in the underground soil layer 5. The upper support plate 14 and the lower support plate 7 are provided with an intermediate support plate 10 located outside the circumference of the turntable 3, which plays a supporting role. The thickness of the turntable 3 is slightly smaller than the thickness of the middle support plate 10, which can ensure the free rotation of the turntable 3. The overall structure consists of 12 Screw 9 connection.

In the present invention, the drive motor 16 is connected to the driving gear 13 through the output shaft of the reducer 15 to drive the ring gear 23 to rotate, and the ring gear 23 drives the turntable 3 to rotate, and the turn of the turntable 3 makes a plurality of filter screens 22 work interchangeably, and one of the filter screens 22 is at The water pump suction port 4 is at the position, and the other filter screen 24 is at the flushing position. After the filter dirt at the water pump suction port 4 is clogged, the pressure sensor 19 sends out an electric signal, controls the normally open contact 27 to close, starts the driving motor 16, and drives the turntable 3 rotation, when the turntable turns 180 degrees, the induction magnet 23 is close to the corresponding proximity switch 22, the control normally open contact 30 is closed, the control normally closed contact 31 is opened, the drive motor 16 stops working, and the turntable 3 stops At the same time, the water flushing motor 28 works, and the filter screen 24 before and after cleaning is exchanged, and the dirt is cleaned. The cleaning of the filter screen 24 is completed by the water flushing sprinkler 17 arranged outside the pipeline, and the flushed dirt The waste is caught and discharged by the drain tank 6.

As stated above, while the invention has been shown and described with reference to certain preferred embodiments, this should not be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (2)

1. a sewage filter device is characterized in that, comprises that support (8), inlet channel (4), rotating disk (3), rotating shaft (18), water wash away water jet (17), drive motor (16) and reductor (15);

Said support (8) is provided with upper supporting plate (14) and lower carrier plate (7); Said rotating disk (3) is horizontally set between upper supporting plate (14) and the lower carrier plate (7); The axle center of rotating disk (3) is passed in said rotating shaft (18), and the two ends up and down of rotating shaft (18) are separately positioned on upper supporting plate (14) and the lower carrier plate (7);

Said suction piping (2) and inlet channel (4) are corresponding up and down; Be separately positioned on upper supporting plate (14) and the lower carrier plate (7); The water inlet bead of suction piping (2) is concordant with the upside card of rotating disk (3), and the water outlet bead of inlet channel (4) is concordant with the downside card of rotating disk (3);

It is centrosymmetric screen pack (24) that the card of said rotating disk (3) is provided with a plurality of axle center with rotating disk (3); The size of said screen pack (24) and suction piping (2) are complementary; Screen pack (24) can place between suction piping (2) and the inlet channel (4) with the rotation of rotating disk (3); Other screen packs this moment (24) are in flushing station (32); Said water washes away water jet (17) and is arranged on the upper supporting plate (14), and is corresponding with the flushing station (32) of screen pack (24), and said lower carrier plate (7) is gone up with the corresponding position of flushing station (32) and is provided with dirt discharge groove (6);

Said drive motor (16), reductor (15) are positioned at rotating disk (3) one sides, and drive motor (16) drives rotating disk (3) through reductor (15).

2. a kind of sewage filter device according to claim 1 is characterized in that, the outer rim of said rotating disk (3) is provided with gear ring (25), and said reductor (15) is gone up the driving gear (13) and gear ring (25) engagement that is provided with.

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