CN217854737U

CN217854737U - Quicksand filter

Info

Publication number: CN217854737U
Application number: CN202221911576.XU
Authority: CN
Inventors: 胡晋明; 王建森
Original assignee: Shanghai Woteyun Environmental Technology Co ltd
Current assignee: Shanghai Woteyun Environmental Technology Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-11-22
Anticipated expiration: 2032-07-21

Abstract

The utility model relates to a quicksand filter, which comprises a shell, a water inlet pipeline, a water outlet pipeline, a sand washer and a sand lifting pipeline, wherein a sand layer is laid at the bottom of the shell; the water inlet pipeline is arranged at the bottom of the shell, one end of the water inlet pipeline extends into the sand layer, and the other end of the water inlet pipeline extends out of the shell; the water outlet pipeline is arranged at the upper part of the shell, and an overflow weir arranged around the water outlet pipeline is also arranged in the shell; the sand washer is arranged at the upper part in the shell, a sand washing water discharge port is arranged in the sand washer, and the height of the sand washing water discharge port is lower than that of the overflow weir; the sand extracting pipeline is communicated between the sand washer and the bottom of the shell, and a compressed air pipe orifice used for being communicated with compressed air is arranged on the sand extracting pipeline. The utility model discloses utilize compressed air to carry out gas scrubbing to the grit in the lifting pipeline, recycle the water after the filtration and wash the grit, clear away the impurity in the grit, need not the shut down backwash, realized lasting filtration.

Description

Quicksand filter

Technical Field

The utility model relates to a water treatment facilities field especially relates to a quicksand filter.

Background

The quicksand filter is the most economic and effective solution for removing solid suspended matters and other impurities in the field of water treatment and sewage purification, and can effectively remove suspended particles, colloidal substances and other impurities in raw water (or waste water). At present, in the working process of quicksand filter on the market, because the suspended solid that the sand bed held back can make the filter resistance increase after reaching the certain degree, influence the filter effect, consequently, after intaking out water to a certain time, need stop intaking and carry out the backwash for the filter resistance reduces to certain numerical value after, resumes into water again. Therefore, a large backwashing water pump needs to be arranged in the sand flowing filter, and the sand flowing filter cannot continuously work, so that the working efficiency and the cost are greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a quicksand filter to solve above-mentioned technical problem.

In order to solve the technical problem, the utility model provides a quicksand filter, which comprises a shell, a water inlet pipeline, a water outlet pipeline, a sand washer and a sand extracting pipeline,

a sand layer is laid at the bottom of the shell;

the water inlet pipeline is arranged at the bottom of the shell, one end of the water inlet pipeline extends into the sand layer, and the other end of the water inlet pipeline extends out of the shell; the water outlet pipeline is arranged at the upper part of the shell, and an overflow weir arranged around the water outlet pipeline is also arranged in the shell;

the sand washer is arranged at the upper part in the shell, a sand washing water discharge port is arranged in the sand washer, and the height of the sand washing water discharge port is lower than that of the overflow weir;

the sand extracting pipeline is communicated between the sand washer and the bottom of the shell, and a compressed air pipe orifice used for being communicated with compressed air is arranged on the sand extracting pipeline.

Preferably, a sand separating mechanism and a guide mechanism arranged around the sand separating mechanism are arranged in the sand washer.

Preferably, the guide mechanism is a plurality of downward inclined baffles which are arranged in a staggered mode.

Preferably, the included angle between the baffle and the horizontal plane is 30-60 degrees.

Preferably, a detachable rubber pipe is installed on the sand washing water discharge port.

Preferably, the bottom of the shell is a conical sand collecting hopper, and the bottom of the sand collecting hopper is provided with a sand discharge port.

Preferably, the sand extracting pipeline is further provided with a sand injecting port.

Preferably, the water inlet of the water inlet pipeline extending into the sand layer is in an inverted cone shape.

Compared with the prior art, the utility model provides a quicksand filter has following advantage:

1. according to the pneumatic sand cleaning device, the compressed air pipe orifice communicated with compressed air is additionally arranged on the sand lifting pipeline, so that the compressed air can be used for carrying out gas cleaning on sand in the lifting pipeline, and impurities in the sand are removed preliminarily; because the height of the sand washing water discharge port is lower than that of the overflow weir, part of the filtered water enters the sand washer from bottom to top to wash the sand falling from the sand washer, so that impurities in the sand are further removed, the whole process does not need to be stopped, continuous filtering is realized, and the working efficiency of the sand washing filter is greatly improved;

2. the utility model does not need to be provided with backwashing components such as a backwashing pump, a backwashing water tank and the like, reduces the volume of the sand washing filter and reduces the production cost;

3. the utility model provides an inlet channel is located the casing lower part, and outlet conduit is located casing upper portion, and the flow direction of consequently raw water is for passing the sand bed from bottom to top, ensures that the sand bed carries out abundant filtration to the raw water, has promoted the filter effect.

Drawings

FIG. 1 is a schematic structural view of a sand filter according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a sand washer according to an embodiment of the present invention.

In the figure: 10-shell, 11-sand, 12-sand discharge port, 20-water inlet pipeline, 21-water inlet, 30-water outlet pipeline, 31-overflow weir, 40-sand washer, 41-sand washing water discharge port, 42-sand separating mechanism, 43-baffle, 44-transition plate, 45-rubber tube, 50-sand extraction pipeline, 51-compressed air nozzle and 52-sand injection port.

Detailed Description

In order to describe the technical solution of the above utility model in more detail, the following specific examples are given to demonstrate the technical effects; it should be emphasized that these examples are for illustrative purposes only and are not limiting to the scope of the present invention.

The quicksand filter provided by the utility model, as shown in figure 1, comprises a shell 10, a water inlet pipe 20, a water outlet pipe 30, a sand washer 40 and a sand lifting pipe 50,

a sand layer formed by piling sand 11 is paved at the bottom of the shell 10;

the water inlet pipeline 20 is installed at the bottom of the shell 10, one end of the water inlet pipeline extends into the sand layer, the other end of the water inlet pipeline extends out of the shell 10, and water is injected and distributed into the sand layer after the water inlet pipeline is connected with a wastewater (or raw water) source containing suspended matters, in some embodiments, a water inlet 21 of the water inlet pipeline 20 extending into the sand layer is in an inverted cone shape, so that the problem of uneven washing of the sand 11 caused by over-concentrated water flow is avoided; the outlet pipe 30 is installed at the upper part of the housing 10, and a weir 31 is further provided in the housing 10 and surrounds the outlet pipe 30, wherein the height of the weir 31 can determine the water level inside the quicksand filter, i.e. the amount of water that can be stored in the quicksand filter. The utility model provides an inlet channel 20 is located casing 10 lower part, and outlet conduit 30 is located casing 10 upper portion, so the flow direction of raw water is for passing the sand bed from bottom to top, ensures that the sand bed carries out abundant filtration to the raw water, has promoted the filter effect.

The sand washer 40 is arranged at the upper part in the shell 10, a sand washing water discharge port 41 is arranged in the sand washer 40, the height of the sand washing water discharge port 41 is lower than that of the overflow weir 31, part of the filtered water enters the sand washer 40 from bottom to top due to the height difference h between the sand washing water discharge port 41 and the overflow weir 31, sand 11 falling from the sand washer 40 is washed, and the washed water is discharged out of the sand filter from the sand washing water discharge port 41; another portion of the filtered water will enter weir 31 directly and exit outlet conduit 30.

The sand extracting pipeline 50 is communicated between the sand washer 40 and the bottom of the shell 10, and a compressed air nozzle 51 communicated with compressed air is arranged on the sand extracting pipeline 50, so that on one hand, the compressed air can generate air stripping action on a sand layer, and sand 11 at the bottom of the quicksand filter enters the sand washer 40 through the sand extracting pipeline 50; on the other hand, the compressed air may also provide gas scrubbing of the sand 11 in the lifting pipe 50 to provide a preliminary cleaning of the sand 11 of impurities.

According to the pneumatic cleaning device, the compressed air pipe orifice 51 communicated with compressed air is additionally arranged on the sand lifting pipeline 50, so that the compressed air can be used for carrying out pneumatic cleaning on the sand 11 in the sand lifting pipeline 50, and impurities in the sand 11 can be removed preliminarily; because the height of the sand washing water discharge port 41 is lower than that of the overflow weir 31, part of the filtered water enters the sand washer 40 from bottom to top, when the sand 11 falls, the water brings out suspended matters intercepted in the sand 11, and then the sand washing water is discharged out of the sand washing filter through the sand washing water discharge port 41, so that the aim of removing impurities in the sand 11 is fulfilled.

Referring to fig. 2, in some embodiments, a sand separating mechanism 42 and a guiding mechanism installed around the sand separating mechanism 42 are provided in the sand washer 40, the sand 11 in the sand washer 40 flows downward due to gravity, and the sand separating mechanism 42 disperses the sand 11; in some embodiments, the guide mechanism may be a plurality of downward inclined baffles 43 arranged in a staggered manner, the plurality of baffles 43 form a zigzag folded plate path, so that the falling stroke of the sand 11 can be increased, and the sand 11 is washed by water flowing along the folded plate path from bottom to top, so that the contact time and the contact area between the sand 11 and water are greatly increased, the sand 11 is fully contacted with the water, and the washing effect is better; in some embodiments, the angle between the baffle 43 and the horizontal may be 30 ° to 60 °, if the angle is too small, the resistance to the fall of the sand 11 is too great, which tends to cause the sand 11 to become clogged, and if the angle is too great, the speed of the fall of the sand 11 is too high, which prevents adequate cleaning. In some embodiments, a transition plate 44 is further installed at the position where the baffle 43 is connected to the sand separating mechanism 42 or the inner wall of the sand washer 40, so as to further avoid the baffle 43 from accumulating and blocking at the corner.

Referring to fig. 1, in some embodiments, the sand washing water discharging port 41 is provided with a detachable rubber tube 45 for adjusting the height of the sand washing water discharging port 41 and thus adjusting the discharging time of the sand washing water.

With continued reference to fig. 1, in some embodiments, the bottom of the housing 10 is a conical sand collection hopper, and a sand discharge port 12 is formed at the bottom of the sand collection hopper for emptying sand 11 in the housing 10; the sand extraction pipe 50 is further provided with a sand injection port 52 for injecting sand 11 before the initial start. Of course, to increase the sand injection and removal rate, pneumatic conveyance may be used to inject the sand 11 or to remove the sand 11 from the quicksand filter.

To sum up, the quicksand filter provided by the utility model comprises a shell 10, a water inlet pipeline 20, a water outlet pipeline 30, a sand washer 40 and a sand extraction pipeline 50, wherein a sand layer is laid at the bottom of the shell 10; the water inlet pipeline 20 is installed at the bottom of the shell 10, one end of the water inlet pipeline extends into the sand layer, and the other end of the water inlet pipeline extends out of the shell 10; the outlet pipe 30 is mounted at the upper part of the housing 10, and an overflow weir 31 arranged around the outlet pipe 30 is further arranged in the housing 10; the sand washer 40 is arranged at the upper part in the shell 10, a sand washing water discharge port 41 is arranged in the sand washer 40, and the height of the sand washing water discharge port 41 is lower than that of the overflow weir 31; the sand extracting pipeline 50 is communicated between the sand washer 40 and the bottom of the shell 10, and a compressed air nozzle 51 for communicating with compressed air is arranged on the sand extracting pipeline 50. According to the sand cleaning device, the compressed air pipe orifice 51 communicated with compressed air is additionally arranged on the sand lifting pipeline 50, so that the compressed air can be used for performing gas scrubbing on the sand 11 in the sand lifting pipeline 50, and impurities in the sand 11 can be removed preliminarily; because the height of the sand washing water discharge port 41 is lower than that of the overflow weir 31, part of the filtered water enters the sand washer 40 from bottom to top, washes the falling sand 11 in the sand washer 40, further removes impurities in the sand 11, does not need to be stopped in the whole process, realizes continuous filtering, and greatly improves the working efficiency of the sand washing filter.

It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A quicksand filter is characterized by comprising a shell, a water inlet pipeline, a water outlet pipeline, a sand washer and a sand extracting pipeline,

a sand layer is laid at the bottom of the shell;

2. A quicksand filter as claimed in claim 1 wherein a sand separating means and a guide means mounted around the sand separating means are provided in the sand washer.

3. A quicksand filter as claimed in claim 2, wherein said guide means is a plurality of staggered downwardly inclined baffles.

4. A quicksand filter as claimed in claim 3 wherein said baffle is at an angle of 30 ° to 60 ° to the horizontal.

5. A quicksand filter as claimed in claim 1 wherein a removable rubber hose is fitted to said sand wash water discharge port.

6. A quicksand filter as claimed in claim 1, wherein the bottom of the housing is a conical sand collection hopper, and the bottom of the sand collection hopper is provided with a sand discharge port.

7. A quicksand filter as claimed in claim 1, wherein said sand extraction conduit is further provided with a sand injection port.

8. A quicksand filter as claimed in claim 1, wherein the inlet of said inlet conduit into said sand bed is inverted cone shaped.