CN112386994B

CN112386994B - Sewage filtering device

Info

Publication number: CN112386994B
Application number: CN202011369424.7A
Authority: CN
Inventors: 李安稳
Original assignee: Cccc Weiming Environmental Protection Co ltd
Current assignee: Cccc Weiming Environmental Protection Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2022-04-19
Anticipated expiration: 2040-11-30
Also published as: CN112386994A

Abstract

The invention relates to a sewage filtering device, which effectively solves the problems of untimely cleaning and the like during sewage filtering; the technical scheme for solving the problem is that the device comprises a bracket, wherein two first supporting rods and a plurality of second supporting rods are arranged on the bracket; the second supporting rod is provided with a filtering body which can move up and down along the second supporting rod and reset upwards; a water inlet fixed on the bracket is arranged above the filter body; each second supporting rod is provided with a water tank which moves up and down along with the filtering body, a siphon is arranged in the water tank, a vertical rod is fixed on the water tank, the upper end of the vertical rod is hinged with a baffle which is obliquely arranged, and the baffle can block the water tank; a balancing weight is fixed at the inner end of the baffle; each second supporting rod is provided with a limiting block for blocking the baffle from swinging; after the water tank descends along with the filter body, the inclination angle of the baffle changes, and water in the filter body can enter the water tank from a gap between the baffle and the upper end of the water tank; the invention can automatically clean and avoid the long-time blockage or high load of the filter screen.

Description

Sewage filtering device

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a sewage filtering device.

Background

The sewage is generally subjected to primary filtration to filter various impurities contained in the sewage; after which further processing takes place. When filtering, the filter screen is easily blocked due to various types of impurities in the sewage; thereby affecting the effectiveness and speed of filtration. Most of filtering devices on the market at present dredge the filter screen in a mode of cleaning regularly, and treat sundries accumulated on the filter screen; the cleaning process not only needs to be stopped, but also increases the workload. Some devices also use water or air pressure to flush the filter screen in real time, so that on one hand, unnecessary water pumps or air pumps are added, on the other hand, water used for flushing the filter screen is mixed with filtered impurities, the sewage quantity is increased, and the water content of the impurities is also increased; the subsequent treatment is inconvenient; particularly, the filter screen is easy to adhere to light and thin sundries such as plastic bags and the like, so that the filter screen is blocked in a large area, the cleaning frequency is low by adopting the traditional mode, and the sundries can not be removed in time; meanwhile, for some sundries such as stone bricks, even if the filter screen is not blocked, the long-time heavy load of the filter screen and the repeated dynamic impact of the sundries can aggravate the damage of the filter screen; there is therefore a need to solve the above problems.

Disclosure of Invention

In view of the above situation, the present invention provides a sewage filtering apparatus, which can effectively solve the problems of untimely cleaning and the like during sewage filtering.

The technical scheme for solving the problem is that the device comprises a bracket, wherein a left first supporting rod, a right first supporting rod and a plurality of second supporting rods positioned in the middle are arranged on the bracket; a filter body which can move up and down along the second support rods and reset upwards is arranged on the plurality of second support rods;

the filter body comprises a shell, the upper end of the shell is provided with a feed inlet, and the lower end of the shell is provided with a discharge outlet; a rotating shaft transversely penetrates through the shell, and a gear is fixed at the end part of the rotating shaft; a section of rack which can be meshed with the gear on the same side is respectively fixed on the left and the right first supporting rods; after the filter body descends, the gear is meshed with the rack to ensure that the rotating shaft rotates; a cylinder arranged in the discharge port is fixed on the rotating shaft; the outer edge surface of the cylinder is symmetrically provided with openings in the length direction in the front and back direction; each opening is hinged with a water baffle which can swing and reset; a filter screen is arranged below the outer edge surface of the cylinder; the left side and the right side of the cylinder are provided with side plates, and the upper half part of each side plate is provided with a slag discharge port;

a water inlet fixed on the bracket is arranged above the filter body; each second supporting rod is provided with a water tank which moves up and down along with the filtering body, a siphon is arranged in the water tank, a vertical rod is fixed on the water tank, the upper end of the vertical rod is hinged with a baffle which is obliquely arranged, and the baffle can block the water tank; a balancing weight is fixed at the inner end of the baffle; each second supporting rod is provided with a limiting block for blocking the baffle from swinging; after the water tank descends along with the filtering body, the inclination angle of the baffle changes, and water in the filtering body can enter the water tank from a gap between the baffle and the upper end of the water tank.

The automatic cleaning device disclosed by the invention has the advantages that the automatic cleaning is realized, the service life of the device is prolonged, and the long-time blockage or long-time high load of the filter screen is avoided.

Drawings

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

FIG. 2 is a front sectional view of the present invention.

Fig. 3 is a left side view of the filter body of the present invention.

Fig. 4 is a left side sectional view of the filter cartridge (filtration state).

Fig. 5 is a left side sectional view of the filter cartridge (in an inverted state).

Fig. 6 is a perspective view of the filter cartridge.

Detailed Description

The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1 to 6, the present invention includes a bracket 1, wherein the bracket 1 is provided with a left first support rod 2 and a right first support rod 2, and a plurality of second support rods 3 in the middle; a filter body 4 which can move up and down along the second support rods 3 and reset upwards is arranged on the plurality of second support rods 3;

the filter body 4 comprises a shell 401, the upper end of the shell 401 is provided with a feed inlet 402, and the lower end is provided with a discharge outlet 403; a rotating shaft 404 transversely penetrates through the shell 401, and a gear 405 is fixed at the end of the rotating shaft 404; a section of rack 406 which can be meshed with the gear 405 on the same side is respectively fixed on the left and the right first supporting rods 2; after the filter body 4 descends, the gear 405 is meshed with the rack 406, so that the rotating shaft 404 rotates 180 degrees; a cylinder 407 arranged in the discharge hole 403 is fixed on the rotating shaft 404; the outer edge surface of the cylinder 407 is symmetrically provided with openings 408 in the length direction; a water baffle 409 which can swing and reset is hinged at each opening 408; below in the outer peripheral surface of the cylinder 407 is a screen 410; the left side and the right side of the cylinder 407 are provided with side plates 411, and the upper half part of each side plate 411 is provided with a slag discharge port 412;

a water inlet 5 fixed on the bracket 1 is arranged above the filter body 4; each second support rod 3 is provided with a water tank 6 which moves up and down along with the filter body 4, a siphon pipe 7 is arranged in the water tank 6, a vertical rod 8 is fixed on the water tank 6, the upper end of the vertical rod 8 is hinged with a baffle 9 which is obliquely arranged, and the baffle 9 can block the water tank 6; a balancing weight 10 is fixed at the inner end of the baffle 9; each second support rod 3 is provided with a limit block 11 for preventing the baffle 9 from swinging; after the water tank 6 descends along with the filter body 4, the inclination angle of the baffle 9 is changed, and water in the filter body 4 can enter the water tank 6 from a gap between the baffle 9 and the upper end of the water tank 6.

In order to realize the installation of the filter body 4, the shell 401 of the filter body 4 on install a plurality of sleeves 12, the second support rod 3 runs through the sleeves 12, every second support rod 3 is equipped with an extension spring 13, the upper end of the extension spring 13 is fixed at the top of the bracket 1, and the lower end of the extension spring 13 is fixed on the sleeve 12.

In order to realize that the water tank 6 moves up and down along with the filter body 4, a connecting rod 14 is fixed between the water tank 6 and the shell 401 of the filter body 4.

In order to avoid that the swinging angle is too large after the baffle 9 above the water tank 6 descends along with the water tank 6, the vertical rod 8 is provided with a first limiting bulge 15 for blocking the baffle 9 to swing, and the first limiting bulge 15 is positioned below the baffle 9.

In order to avoid the filter 4 from excessively descending, a second limiting protrusion 16 corresponding to the lower end of the rack 406 is fixed on each first supporting rod 2.

In order to more stably enable the rotating shaft 404 to support the cylinder 407, a plurality of wales 17 are fixed on the rotating shaft 404, and the end portions of the wales 17 are fixed on the inner side surface of the cylinder 407.

In order to enable the water baffle 409 hinged at the opening 408 to reset after rotating, the upper end of the water baffle 409 is hinged with the upper side surface of the opening 408, a torsion spring is installed at the hinged point, and the torsion spring can enable the water baffle 409 to be kept in a state of blocking the opening 408.

In order to facilitate the discharge of the impurities to both sides, a chute 18 is fixed on each first supporting rod 2 and is arranged obliquely.

In order to enhance the filtering effect, the bottom of the shell is in an inclined shape with a low middle and high two sides, and the bottom of the shell is in a filter screen shape.

When the present invention is used, firstly, in the case that the filter 4 is not blocked, i.e. the lower half of the strainer 410 in the cylinder 407 is not blocked, the sewage flows downward from the upper water inlet 5, and then directly enters the interior of the filter 4 through the feed port 402 of the housing 401 of the filter 4.

Since the cylinder 407 in the interior of the filter body 4 is located at the discharge port 403 of the housing 401, the sewage is filtered by the cylinder 407; specifically, in the initial state, the strainer 410 of the cylinder 407 is located below, and the upper portion corresponding to the strainer 410 is a solid portion, so that when sewage falls onto the cylinder 407 from top to bottom, the sewage is blocked by the solid portion on the cylinder 407, is dispersed to the front and rear sides of the cylinder 407, and enters the interior of the cylinder 407 through the openings 408 on the front and rear sides of the cylinder 407 by the gathering action of the housing 401; because the opening 408 is hinged with the water baffle 409, the sewage drives sundries to push the water baffle 409 to incline and enter the cylinder 407. Then, the impurities remain inside the cylinder 407 by the filter screen 410 at the bottom of the cylinder 407, and the filtered sewage flows downward through the cylinder 407.

When the filtered sewage flows downwards, the sewage on the left side and the sewage on the right side flow through the water tank 6. In the initial state, the impurities inside the cylinder 407 are less, and the filter screen 410 is not blocked, so the whole filter body 4 is at the top of the stroke, at this time, referring to fig. 2, because the inclined state of the baffle 9 on the water tank 6 is closely related to the descending height of the filter body 4, when the filter body 4 does not descend, the baffle 9 can make the baffle 9 be in the state of completely blocking the water tank 6 (the upper end of the water tank is open) under the blocking action of the limit block 11 on the first support rod 2, that is, the water flow can be blocked by the baffle 9 and does not enter the inside of the tank body.

The above is a normal filtration state; when the filter screen 410 is clogged or the filter screen 410 has heavy impurities, the downward component force applied to the entire filter 4 increases, the tension spring 13 of the second support rod 3 is also stretched, i.e., the filter 4 descends, and when the filter 4 descends, the water tank 6 descends. When the water tank 6 descends, the baffle 9 hinged above the water tank 6 inclines (under the combined action of the baffle 9 counterweight 10 and water flow), so that the baffle 9 does not completely block sewage, and a part of sewage can enter the water tank 6; thereby increasing the weight of the water tank 6.

With the increasing weight of the water tank 6, the whole filter body 4 and the water tank 6 are further lowered, so that a positive feedback phenomenon occurs, that is, the more water enters the water tank 6, the more the water tank 6 is lowered, and the water continues to enter the water tank 6. With the continuous descending of the filter body 4, the gear 405 at the end of the rotating shaft 404 penetrating through the filter body 4 is meshed with the rack 406 on the first support rod 2, and because the weight of the water in the water tank 6 is larger, the water is pulled by the gravity of the water tank 6; the gear 405 drives the rotating shaft 404 to rotate; then the rotating shaft 404 drives the cylinder 407 to rotate; due to the length limitation of the rack 406, the rotating shaft 404 can only drive the cylinder 407 to rotate 180 degrees, i.e. the cylinder 407 is upside down. See fig. 4 and 5; the lower screen 410 would be at the top at this time; and the inner impurities fall into the solid part of the cylinder 407; and the sundries can not fall out in the overturning process due to the action of the water baffle 409. As sewage is still entering; at this time, the sewage reversely flushes the filter screen 410, enters the cylinder 407 after being filtered by the filter screen 410, and flushes the impurities on the solid part; because the side plate 411 is provided with the slag discharge port 412, the slag discharge port 412 is also positioned at the lower position after the side plate is turned over, so that impurities can be discharged from the slag discharge ports 412 at two sides; and the impurities fall on the slideway 18 and are discharged to both sides. The discharged sundries can be collected and treated uniformly by the collecting box.

During the above-mentioned overturning, the water in the tank 6 is already close to the discharge level of the siphon 7; after the sundries are discharged for a certain time, the water filtered and discharged through the gaps of the discharge holes 403 of the shell 401 and the cylinder 407 and the inclined filter screen at the bottom of the shell 401 can continuously enter the water tank 6, so that the water in the water tank 6 reaches the drainage height; at this time, the water in the water tank 6 is discharged completely as soon as it is discharged; the weight of the water tank 6 is then reduced; the entire apparatus is raised, and the drum 407 is rotated in reverse and reset to its original state.

When using, if having adopted a plurality of water tanks 6 to carry out combined action, then can be with the intercommunication through the pipeline between a plurality of water tanks 6, make the liquid level highly uniform of a plurality of water tanks 6, avoid the uncoordinated problem of a plurality of water tanks 6.

The device uses the descending generated after the filter body 4 is blocked or the load is too large as an automatic judgment condition, thereby using the descending height; after the baffle 9 is inclined, a large amount of water flows into the water tank 6, and then the weight of the water tank 6 is utilized to realize the purpose of pulling the whole filter body 4 to greatly descend again, so that the cylinder 407 is overturned, sundries are discharged, and the filter screen 410 is cleaned; simple, efficient and automatic. Because the blocking condition and the loading condition of the filter screen 410 are utilized, when the sewage is relatively clean, the whole device cannot be cleaned frequently, and the overall stability is improved.

Ingenious design drum 407's structure in this device, make drum 407's initial state can filter through filter screen 410, can fall on drum 407's solid face through debris after the upset to continue to utilize the scouring action of sewage, make debris discharge from both sides, collect, avoid mixing with the sewage that filters, can also play the effect of reverse flush filter screen 410 simultaneously, avoided filter screen 410 because of the jam that little debris produced.

This device is arranging the sediment after, a period of time after, and the water in the water tank 6 can discharge fast, has realized the automation of whole device and has reset, must artificial intervention, has alleviateed the burden, has improved the life of device, has avoided long-time jam of filter screen 410 or long-time high load.

Claims

1. A sewage filtering device comprises a bracket (1) and is characterized in that the bracket (1) is provided with a left first supporting rod and a right first supporting rod (2) and a plurality of second supporting rods (3) positioned in the middle; a filter body (4) which can move up and down along the second support rods (3) and reset upwards is arranged on the second support rods (3);

the filter body (4) comprises a shell (401), the upper end of the shell (401) is provided with a feed inlet (402), and the lower end of the shell is provided with a discharge outlet (403); a rotating shaft (404) transversely penetrates through the shell (401), and a gear (405) is fixed at the end part of the rotating shaft (404); a section of rack (406) which can be meshed with the gear (405) at the same side is respectively fixed on the left and the right first supporting rods (2); after the filter body (4) descends, the gear (405) is meshed with the rack (406), so that the rotating shaft (404) rotates 180 degrees; a cylinder (407) arranged in the discharge hole (403) is fixed on the rotating shaft (404); the outer edge surface of the cylinder (407) is symmetrically provided with openings (408) in the length direction from front to back; a water baffle (409) capable of swinging and resetting is hinged at each opening (408); below in the outer peripheral surface of the cylinder (407) is a strainer (410); the left side and the right side of the cylinder (407) are provided with side plates (411), and the upper half part of each side plate (411) is provided with a slag discharge port (412);

a water inlet (5) fixed on the bracket (1) is arranged above the filter body (4); each second supporting rod (3) is provided with a water tank (6) which moves up and down along with the filtering body (4), a siphon (7) is arranged in each water tank (6), a vertical rod (8) is fixed on each water tank (6), the upper end of each vertical rod (8) is hinged with a baffle (9) which is obliquely arranged, and each baffle (9) can block the water tank (6); a balancing weight (10) is fixed at the inner end of the baffle (9); each second support rod (3) is provided with a limit block (11) for preventing the baffle (9) from swinging; after the water tank (6) descends along with the filter body (4), the inclination angle of the baffle (9) changes, and water in the filter body (4) can enter the water tank (6) from a gap between the baffle (9) and the upper end of the water tank (6);

the utility model discloses a filter body (4) and filter method, filter body (4) shell (401) on install a plurality of sleeves (12), sleeve (12) are run through in second bracing piece (3), all overlap on every second bracing piece (3) and be equipped with extension spring (13), the top at support (1) is fixed to the upper end of extension spring (13), the lower extreme of extension spring (13) is fixed on sleeve (12).

2. A device according to claim 1, characterized in that a connecting rod (14) is fixed between the tank (6) and the housing (401) of the filtering body (4).

3. A sewage filtering apparatus according to claim 1, wherein the vertical rod (8) is provided with a first limiting protrusion (15) for blocking the swing of the baffle (9), and the first limiting protrusion (15) is located below the baffle (9).

4. A sewage filtering apparatus according to claim 1, wherein each of said first supporting rods (2) is fixed with a second limit projection (16) corresponding to the lower end of the rack (406).

5. A device for filtering waste water according to claim 1, wherein a plurality of cross braces (17) are fixed on the rotating shaft (404), and the ends of the cross braces (17) are fixed on the inner side of the cylinder (407).

6. The sewage filtering device according to claim 1, wherein the upper end of the water deflector (409) is hinged with the upper side surface at the opening (408), and a torsion spring is installed at the hinged point, and the torsion spring can keep the water deflector (409) in a state of blocking the opening (408).

7. A sewage filtering device according to claim 1, characterized in that each of said first supporting bars (2) is fixed with an obliquely arranged slide (18).