CN212731192U - Filter pond air water back flush water drainage tank - Google Patents

Abstract

The utility model discloses a filtering pond air water back flush water drainage tank, including water drainage tank and three-phase separator, three-phase separator is still including air bypass flow baffle, main baffle, inferior baffle and connecting rod, three-phase separator fixed mounting is in water drainage tank's both sides, air bypass flow baffle mounting is in water drainage tank's both sides lateral wall, main baffle passes through bolt suspension connection in the outer end of connecting rod, inferior baffle passes through the bolt and installs in the middle part of connecting rod, through the utility model discloses an implement, prevent effectively that the filtering pond from running sand when the air water back flush, need often supply quartz sand when having solved the filtering pond operation, can not influence filtering pond play water quality of water, the problem of water plant cost is corresponding solution also, has certain use value and spreading value.

Description

Filter pond air water back flush water drainage tank

Technical Field

The utility model relates to a water treatment technical field especially relates to a filtering pond air water backwash water drainage tank.

Background

The conventional filter mainly adopts quartz sand as a filter material, when filtering, valves on a water inlet pipe and a clean water pipe of the filter are opened, raw water with suspended matters passes through a filter material layer and a supporting layer from top to bottom and then enters a clean water tank after being collected by a water distribution system, when the water quality of outlet water does not meet the requirement or the head loss of the filter layer reaches the maximum value, the filter needs to be backwashed, backwashing gas and water pass through the filter material layer from bottom to top through the water distribution system, when the air flow and the water flow reach certain strength, sand grains are driven to move so as to rub and collide with each other, sludge attached to the surfaces of the sand grains falls off during mutual friction among the sand grains, and the sludge flows upwards along with wastewater and enters a washing drainage tank at the top of the filter to be discharged.

Since the 90 s, the V-shaped filter tank is introduced into China and popularized in China, the filter tank adopts an air-water backwashing process, and has the advantages of low water consumption and good backwashing effect, but long-term operation of a water plant finds that: the filter tank is easy to run sand during back flushing, so that a water plant needs to supplement the filter tank with the filtered sand every year.

In about 2000 years, the flap valve filter is introduced in China, in order to prevent sand leakage during backwashing, the water discharge flap valve is closed during air-water backwashing of the filter, and is opened to discharge water after the backwashing is finished, and the water discharge is repeated twice repeatedly.

The air-water backwashing of the filter tank mainly solves the problem of sand leakage during backwashing, and the air in water irregularly moves to have expansion catapulting property, so that quartz sand grains in water are easily flushed into a drainage groove to cause sand leakage and influence the normal operation of the filter tank.

In summary, a filter air-water back-flushing drainage tank is needed to solve the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a filtering pond air water backwash water drainage tank aims at solving the filtering pond and need often supply quartz sand when operation, influences filtering pond play water quality of water promptly, increases the problem of water factory cost again.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a filtering pond air water back flush water drainage tank, includes water drainage tank and three-phase separator, three-phase separator is still including air around flowing baffle, main baffle, inferior baffle and connecting rod, three-phase separator fixed mounting is in water drainage tank's both sides, the air is around flowing the baffle and installing in water drainage tank's both sides lateral wall, main baffle passes through bolt suspension connection in the outer end of connecting rod, inferior baffle passes through the bolt mounting in the middle part of connecting rod.

Preferably, the structural shape of the drainage channel is a U-shaped drainage channel.

Preferably, the three-phase separator consists of an air bypass baffle main baffle, a secondary baffle and a connecting rod.

Preferably, the middle part of the air flow-bypassing baffle is connected with the two sides of the drainage channel through bolts, the air flow-bypassing baffle and the horizontal plane form a 52-degree angle and are inclined downwards, and the two symmetrically-installed air flow-bypassing baffles are distributed in a shape like a Chinese character ba with a small upper part and a large lower part.

Preferably, the main baffle is inclined inwards at an angle of 52 degrees with the horizontal plane, the main baffle is perpendicular to the air bypass baffle, and the lower end of the main baffle is close to the air bypass baffle and is provided with a backflow gap.

Preferably, the secondary baffle is vertically installed on the connecting rod through a bolt, and the baffle is vertical to the horizontal plane.

The utility model has the advantages that:

1. the utility model discloses, adopt water drainage tank, can realize the back flush of filtering pond air water, greatly improve the back flush effect in filtering pond, the abluent cleaner of filter sand practices thrift the back flush water simultaneously.

2. The utility model discloses, current concrete, steel, glass steel water drainage tank both sides can be installed to the three-phase separator of water drainage tank both sides, reforms transform the filtering pond of original single water back flush, realizes the filtering pond air water back flush, promotes water treatment technical level, reduces running cost.

3. The utility model discloses, compare with V type filtering pond, this install three phase separator's water drainage tank additional, during the filtering pond back flush, can add the intensity of atmosphere, water back flush, guarantee the collision friction that can be abundant between the filter sand, the effectual pollutant of getting rid of filter sand surface adhesion to obtain better back flush effect, the back flush procedure is comparatively simple, carries out the drainage when the back flush, each valve switch once accomplishes, the usage is comparatively extensive, the practicality is stronger, has certain practical value and spreading value.

Drawings

Fig. 1 is a front view of the structure of the present invention.

FIG. 2 is a top view of the air-water backwash drain tank.

In the figure: 1-a drainage tank, 2-a three-phase separator, 3-an air bypass baffle, 4-a main baffle, 5-a secondary baffle and 6-a connecting rod.

Detailed Description

As shown in figures 1 and 2, the filter chamber air-water backwashing water draining tank comprises a water draining tank 1 and a three-phase separator 2, wherein the three-phase separator 2 further comprises an air flow-bypassing baffle 3, a main baffle 4, a secondary baffle 5 and a connecting rod 6, the three-phase separator 2 is fixedly arranged on two sides of the water draining tank 1, the air flow-bypassing baffle 3 is arranged on two side walls of the water draining tank 1, the main baffle 4 is connected to the outer end of the connecting rod 6 in a hanging manner through a bolt, and the secondary baffle 5 is arranged in the middle of the connecting rod 6 through a bolt.

Example 1:

as shown in fig. 1 and fig. 2, the present embodiment provides a filter chamber air-water backwashing drainage tank, which includes a drainage tank 1, a three-phase separator 2, an air bypass baffle 3, a main baffle 4, a secondary baffle 5, and a connecting rod 6.

The utility model discloses respectively install a three phase separator 2 at the both sides wall of water drainage tank 1, make gas, liquid, solid promptly air, water, quartz sand separate each other through three phase separator 2, three phase separator 2 comprises air bypass baffle 3, main baffle 4 and time baffle 5, wherein the air bypass baffle 3 among three phase separator 2 is installed in the both sides of water drainage tank 1, 52 degrees downward slopes with the horizontal plane, the middle part of air bypass baffle 3 is connected with the top edge of water drainage tank 1 through the bolt, the upper portion of air bypass baffle 3 is fixed on connecting rod 6, two air bypass baffles 3 present the eight characters type distribution of big end down, the middle part of two bypass baffles 3 is water drainage tank 1, make the ascending rivers of back flush filtering pond, the air current bypasses water drainage tank 1 bottom through air bypass baffle 3, do not produce the impact to the rivers that enter the level inflow water drainage tank 1, meanwhile, the air bypass baffle 3 is equivalent to a precipitation inclined plate which can make the quartz sand grains slide down.

The main baffle 4 of the three-phase separator 3 is hung at the outer end of an upper connecting rod 6, the main baffle 4 is fixed on the connecting rod 6 through bolts, the angle between the horizontal plane and the main baffle 4 is 52 degrees, meanwhile, the main baffle 4 is vertical to the air bypass baffle 3, a 2cm backflow gap is reserved between the lower edge of the main baffle 4 and the air bypass baffle 3 and is used as a sand grain backflow channel, the upper edge of the main baffle 4 and the upper edge of the air bypass baffle 3 are in the same horizontal plane, the outer edge of the main baffle 4 is flush with the outer edge of the air bypass baffle 3, the main baffle 4 is used for preventing air flow from entering the three-phase separator, meanwhile, the main baffle 4 is also used as an inclined plate capable of sinking quartz sand grains, when the air flow rises on the lower part of the main baffle 4, the main baffle 4 inclines inwards, the air flow rises along the bottom surface of the main baffle 4 in an inclined way, and the air flow and the water flow, and the airflow and the water flow cannot reversely flow into the sand grain backflow gap, so that the three-phase separator 2 can normally remove the settled sand grains, and the sand grains are not accumulated in the three-phase separator 2.

The middle part of the upper connecting rod 6 is provided with the secondary baffle 5, the secondary baffle 5 is vertical to the horizontal plane, the upper side of the secondary baffle is flat with the upper side of the main baffle 4, and the lower side of the secondary baffle is deep into 5cm underwater.

The utility model discloses a main baffle 4 and air have constituted a three-phase separator 2 between streaming baffle 3, realize gas, liquid, solid three-phase separation, and the filter sand runs off when avoiding the filtering pond back flush.

During the back flushing of the filter, the water flow and the air flow carry the filter sand to move upwards, most of the filter sand in the water is in a suspended state under the action of gravity and the lifting force of the water flow, the sand grains rub and collide with each other to desorb the sludge coated on the surfaces of the sand grains, the water flow rises to the water surface of the filter, and at the water surface, the air overflows, and the air is separated from the water.

At the bottom of the drainage groove 1, water flow and air flow are blocked by the drainage groove 1 and the air bypass baffle 3 to turn, and part of filter sand carried by the water flow and the air flow rises to the water surface of the filter tank from the outside of the air bypass baffle 3. At the top of the pool, the airflow emerges from the water surface in the form of bubbles and is separated from water, and the water flow turns 90 degrees and overflows the upper weir crest of the main baffle 4 and flows into the drainage channel 1.

When waste water flows to the inside of the drainage channel 1, due to the ejection effect of bubbles in water, when air overflows from the water surface, local water flow is accelerated, water flow carries filter sand, the filter sand passes through the upper weir crest of the main baffle 4, part of the filter sand is ejected and pushed to pass through the main baffle 4, and the filter sand enters the inside of the two-side three-phase separator 2 of the drainage channel 1.

When water flows from the weir crest of the main baffle plate 4 to the weir crest of the air bypass baffle plate 3, the triangular section in the separator is continuously increased, the water flow speed is reduced, the capability of the water flow carrying sand grains is reduced, the sand grains sink along with the water flow, and solid-liquid separation is realized.

In order to prevent the overflow water flow from short flowing, a secondary baffle 5 is arranged in the upper triangular space between the main baffle 4 and the air flow-around baffle 3, the water flow turns under the blocking of the secondary baffle 5 and flows downwards, so that sand grains in water are precipitated downwards under the dual action of inertia force and gravity, and the water flow is prevented from carrying filter sand and directly entering the drainage groove 1 to run off.

The sand grains precipitated in the triangular space formed by the main baffle 4 and the air bypass baffle 3 fall onto the surface of the main baffle 4 or the surface of the air bypass baffle 3, and because the air bypass baffle 3 and the main baffle 4 are inclined downwards at an angle of 52 degrees, the sand grains fall onto the surface of the baffles and cannot stably stay, continuously slide downwards under the action of gravity, finally flow into a backflow gap between the two baffles and flow back onto a filter bed of the filter tank.

The backwashing water flow enables the water flow to flow along with the air flow due to the air lift effect generated by rising of the bubbles, the air flow vertically rises at the lower part of the main baffle 4 under the steering effect of the air flow-around baffle 3, and the partially diffused bubbles obliquely rise along the bottom surface of the main baffle 4.

Drainage tank 1 both sides, under the gas lift effect that gas rises perpendicularly, rivers form a backward flow between the backward flow gap in the edge of three phase separator 2 and three phase separator 2, drainage tank 1 left three phase separator 2 is clockwise backward flow, drainage tank 1 right side three phase separator 2 is anticlockwise backward flow, its flow direction is at three phase separation, 2 marginal air current drives rivers and rises, inside three phase separator 2, rivers descend along the backward flow gap, this backward flow will get into the inside sand grain of three phase separator 2 and take out, avoid the sand grain to detain inside three phase separator 2, the ascending rivers on three phase separator 2 edge, most get into drainage tank 1 in the flow and discharge, the minority is by the backward flow gap backward flow in the filter pool.

This three-phase separator 2 of water drainage tank is washed in gas-water back adopts the secondary separation process, and the first time is gas and water, sand separation, takes place in the outside of main baffle 4, and gas overflows the surface of water, and water and sand cross the last weir crest of main baffle 4, get into inside desilting basin, and the second time is the separation of water and sand, takes place in the outside of secondary baffle 5, and secondary baffle 5 makes rivers turn to, and downward flow, and the sand grain deposits to main baffle 4 upper surface under the effect of gravity and inertia force.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims (6)

1. The utility model provides a filtering pond air water back flush water drainage tank, includes water drainage tank (1) and three-phase separator (2), its characterized in that, three-phase separator (2) are still including air around flowing baffle (3), main baffle (4), inferior baffle (5) and connecting rod (6), three-phase separator (2) fixed mounting is in the both sides of water drainage tank (1), the air is around flowing baffle (3) and install in the both sides lateral wall of water drainage tank (1), main baffle (4) are through bolt suspension connection in the outer end of connecting rod (6), inferior baffle (5) are through bolt mounting in the middle part of connecting rod (6).

2. A filter air-water backwashing water draining tank as claimed in claim 1, wherein the structure of the water draining tank (1) is a U-shaped water draining tank.

3. A filter air-water backwashing drainage tank of claim 1, wherein the three-phase separator (2) is composed of an air bypass baffle (3), a main baffle (4), a secondary baffle (5) and a connecting rod (6).

4. The air-water backwashing drainage tank of the filter tank as claimed in claim 1, wherein the middle part of the air bypass baffle (3) is connected to both sides of the drainage tank (1) through bolts, the air bypass baffle (3) is inclined downwards at an angle of 52 degrees with the horizontal plane, and the two symmetrically installed air bypass baffles (3) are distributed in a shape of a Chinese character Ba with a small top and a big bottom.

5. A filter air-water backwashing drainage tank as claimed in claim 1, wherein the main baffle (4) is inclined inward at an angle of 52 degrees with the horizontal plane, the main baffle (4) and the air bypass baffle (3) are perpendicular to each other, and a backflow gap is reserved between the lower end of the main baffle (4) and the air bypass baffle (3).

6. A filter air-water backwashing drainage tank of claim 1, wherein the secondary baffle (5) is vertically installed on the connecting rod (6) through a bolt, and the baffle (5) is vertical to the horizontal plane.

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