CN204380336U - A kind of effluent treatment and filtering device - Google Patents

Abstract

The utility model discloses a kind of effluent treatment and filtering device, comprise filter tank, filter material layer and filtrate rabbling mechanism is provided with in described filter tank, described filtrate rabbling mechanism is formed primarily of driving power source and spiral agitator, described driving power source is arranged on filter tank outside, described spiral agitator extends in filter material layer, drives power source to provide rotation torque by output shaft to spiral agitator.Filtrate rabbling mechanism, under the prerequisite effectively guaranteeing filter material layer regeneration effect, is reliably arranged in filter tank by the utility model, the simple and compact structure of whole filter, and structural volume is little, manufactures convenient formation, difficulty is little and cost is low.

Description

A sewage treatment filter

technical field

The utility model relates to a filter, in particular to a sewage treatment filter.

Background technique

The sewage treatment filter relies on the excellent adsorption and leakage gap of the filter material layer accumulated inside the filter tank to form a good adsorption and filtration of oily and other sewage, and then achieve the purpose of cleaning treatment. However, the filtration characteristics of the sewage treatment filter make the filter material layer need to be backwashed and regenerated after the filter material layer has intercepted the dirt to a certain extent, so as to enhance the filtering effect of the filter material layer and reduce the filter resistance.

At present, commonly used sewage treatment filters are mainly composed of a filter tank, a filter material layer in the filter tank, and a backwash regeneration mechanism. extension) of the stirring paddle composition. Although the filter with this structure can realize the backwash regeneration of the filter material layer, it has the following main disadvantages due to the limitation of its structure: 1. The rotating stirring paddle can easily break the filter material of the filter material layer, and the broken filter The material not only loses the value of adsorption and filtration, but also blocks the flow channels inside the filter tank, so frequent failures occur; The rigidity is limited, so the length should not be too long, and it cannot be inserted into the bottom of the filter material layer, so it is not easy to stir and loosen the filter material layer of the knot plate, and the backwash regeneration effect is limited; 3. The outer edge of the stirring paddle must keep a certain This further forms a dead angle of stirring of the filter material layer in the filter tank, which cannot effectively and reliably stir and loosen the filter material layer of the knot plate in the filter tank, which greatly limits the reaction to the filter material layer. Wash regeneration effect. To sum up, this type of sewage treatment filter has significant defects such as high cost of filter material, frequent failures, and poor backwash regeneration effect.

In order to effectively overcome the technical defects of the above-mentioned sewage treatment filter, the Chinese patent document discloses the name "Walnut shell filter for extracorporeal circulation cleaning filter material" (public number: CN 203694673; public date: July 9, 2014) . This technology cancels the axially inverted backwash regeneration mechanism in the filter tank, but uses the vortex impact force of the water flow to realize the washing and extraction of the knotted filter material layer in the filter tank, so as to achieve the purpose of loosening and cleaning and regeneration. However, the backwash regeneration mechanism of this technology is arranged outside the filter tank, which not only increases the overall structural volume of the filter; moreover, its overall structure is complex, the technical requirements are high, the manufacturing is difficult, and the manufacturing cost is high; moreover What's more, its backwash regeneration mechanism is prone to clogging and jamming during operation, with poor reliability and short service life.

Contents of the invention

The purpose of the invention of the utility model is to provide a sewage treatment filter with a simple and compact structure, which is easy to manufacture and shape, and has a reliable effect of backwashing and regeneration of the filter material.

The technical solution adopted by the utility model is: a sewage treatment filter, including a filter tank, the filter tank is provided with a filter material layer and a filter material stirring mechanism, and the filter material stirring mechanism is mainly composed of a driving power source and a spiral stirring mechanism. The drive power source is installed outside the filter tank, the spiral agitator extends into the filter material layer, and the drive power source provides rotation torque to the spiral agitator through an output shaft.

Further, the spiral agitator of the filter material stirring mechanism extends into the filter material layer in a radial direction relative to the filter tank.

Still further, the filter material stirring mechanism also includes a speed reducer; the driving power source of the filter material stirring mechanism provides rotational torque to the spiral agitator through the speed reducer.

As a preferred solution, the driving power source is a hydraulic motor.

Further, the helical agitator is a shaftless helical blade.

The beneficial effects of the utility model are:

1. Under the premise of effectively ensuring the regeneration effect of the filter material layer, the utility model reliably sets the filter material stirring mechanism in the filter tank. The structure of the whole filter is simple and compact, the structure volume is small, the manufacturing is convenient, the difficulty is small and low cost;

2. The filter material mixing mechanism of the utility model takes the helical blade extending into the filter material layer as the main body. Driven by the driving power source, the helical agitator uses a strong circumferential rotation torque to make the filter material of the knotted plate in the filter tank The layer forms a radial and axial stirring and loosening relative to the helical blade, so that the filter material layer is completely and fully loosened, which is conducive to the thorough cleaning and regeneration of the loosened filter material by the subsequent cleaning water; there is almost no There is a problem of material running out, and there is almost no problem of blockage inside the filter tank. The frequency of failure is low, the reliability is good, and the service life is long.

3. The filter material stirring mechanism of the utility model has a large output torque, stable and reliable operation, and excellent cleaning and regeneration effects on the filter material layer.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is a kind of structural representation of the utility model.

The meaning of the codes in the figure: 1—driving power source; 2—reducer; 3—machine base; 4—spiral agitator; 5—sewage inlet; 6—filter tank; 7—filter material layer; 8—filter bed; 9 - filter water outlet; 10 - support; 11 - filter material outlet.

Detailed ways

Referring to Fig. 1: the utility model includes filter tank 6.

Wherein, the bottom of filter tank 6 is provided with bearing 10, and filter tank 6 is supported on the ground by bearing 10. The top of the filter tank 6 is mainly provided with a sewage inlet 5 and a filter material outlet 11, the sewage inlet 5 is used to seal and connect the sewage inlet pipe, and the sewage inlet pipe is connected to the oily and sewage source. The bottom of the filter tank 6 is mainly provided with a filter water discharge port 9, the upper end of the filter water discharge port 9 extends to the filter bed 8 in the filter tank 6 and communicates with the filter bed 8, and the lower end of the filter water discharge port 9 is sealed Connected to the filter water discharge pipe. The inner and lower parts of the filter tank 6 are radially provided with a filter bed 8, the filter bed 8 is a sandwich structure with upper and lower layers spaced apart, a plurality of supports are arranged between the interlayers, and a number of capillary filters are arranged on the upper layer of the filter bed 8. hole, the lower layer of the filter bed 8 communicates with the filter water outlet extending into the filter tank 6, and the walnut shell filter material with a thickness ranging from 1.5 to 2m (such as 1.6m, 1.9m or 2m) is accumulated on the filter bed 8 Layer 7 (can also be filter material of other materials), the filter material layer 7 is a simple filter material layer (also a multi-quality filter material layer), and the height of the filter material layer 7 should be lower than all openings on the top of the filter tank 6 ( That is, the height of the sewage inlet 5 and the filter material outlet 11, etc.).

In order to ensure that the filter material layer 7 in the filter tank 6 can be cleaned and regenerated, a filter material stirring mechanism is provided in the filter tank 6 . The filter stirring mechanism is mainly composed of a driving power source 1, a speed reducer 2 and a spiral stirrer 4. Wherein, the driving power source 1 can be an electric motor or a hydraulic motor. In view of the low speed and high torque characteristics of the hydraulic motor, a hydraulic motor is preferred; the output shaft of the driving power source 1 is connected with the input shaft of the reducer 2, and the driving power source 1 and the deceleration The device 2 is installed and fixed on the frame 3 outside the filter tank 6 . The helical agitator 4 is a shaftless helical blade (it can also be replaced by a shafted helical blade); the helical agitator 4 is arranged in the filter tank 6 in a radial direction compared with the filter tank 6, and radially extends into the filter material layer 7 In the middle and lower part, the end of the spiral agitator 4 has a safe distance from the inner wall of the filter tank 6, and the input shaft of the spiral agitator 4 is connected with the output shaft of the reducer 2 to ensure that the filter material stirring mechanism on the wall of the filter tank 6 is extended. The inlet forms a reliable structural seal. That is to say, the utility model forms a filter mixing mechanism for cleaning and regeneration extending into the filter layer 7 on the filter tank 6 with the driving power source 1 (hydraulic motor), the speed reducer 2 and the helical agitator 4 . In order to ensure the excellence of the stirring effect, it can be considered to set several filter material stirring mechanisms on the filter tank 6. The spiral agitator of each filter material stirring mechanism is preferably extended into the bottom of the filter material layer, and its minimum rotation track and The bed surface of the filter bed forms a small gap in a safe range.

The working process of the present utility model is (because the filtering process is consistent with the conventional filter, it will not be repeated here, this working process only introduces the cleaning and regeneration of the filter medium that has lost the adsorption and filtering functions): when the filter material layer in the filter tank 6 7. After the pollution is intercepted to the degree of saturation, the filter material of the filter material layer 7 is basically solidified under the action of the dirt, and the filter pores are almost completely blocked, which in turn makes the filter resistance increase significantly, and the filter effect drops sharply; at this time, turn on the power and start Drive power source 1, drive power source 1 outputs rotational power, this power is reduced by reducer 2, amplified and then output to helical agitator 4, and helical agitator 4 produces rotational stirring; due to the structural characteristics of helical agitator 4, the rotation When stirring, a driving effect is generated in the radial direction and the axial direction of the spiral agitator 4, and then the filter material of the filter material layer 7 on the filter bed 8 is fully turned and stirred successively, and then with the cooperation of the cleaning water, The dirt trapped on the surface of the filter material and the space between the filter material is forcibly desorbed and separated from the filter material under the mutual collision and friction of the filter material, and finally realizes the cleaning and regeneration of the filter material layer 7 and restores the adsorption force.

The above specific technical solutions are only used to illustrate the utility model, not to limit it. Although the utility model has been described in detail with reference to the above-mentioned specific technical solutions, those skilled in the art should understand that: it can still modify the technical solutions of the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these Modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the present utility model.

Claims (5)

1. A filter for sewage treatment, comprising a filter tank (6), in which a filter material layer (7) and a filter material stirring mechanism are arranged in the filter tank (6), it is characterized in that: the filter material stirring mechanism is mainly composed of Composed of a driving power source (1) and a helical agitator (4), the driving power source (1) is installed outside the filter tank (6), and the helical agitator (4) extends into the filter material layer (7), The driving power source (1) provides rotational torque to the helical agitator (4) through an output shaft. 2. The sewage treatment filter according to claim 1, characterized in that: the spiral agitator (4) of the filter material stirring mechanism extends into the filter material layer (7) in the radial direction relative to the filter tank (6) . 3. The sewage treatment filter according to claim 1 or 2, characterized in that: the filter material stirring mechanism also includes a reducer (2); the driving power source (1) of the filter material stirring mechanism passes through the reducer (2) Provide rotation torque to the spiral agitator (4). 4. The sewage treatment filter according to claim 3, characterized in that: the driving power source (1) is a hydraulic motor. 5. The sewage treatment filter according to claim 1 or 2, characterized in that: the spiral agitator (4) is a shaftless spiral blade.