CN209092790U

CN209092790U - A kind of high-accuracy filtering device

Info

Publication number: CN209092790U
Application number: CN201821286530.7U
Authority: CN
Inventors: 张利
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-10
Filing date: 2018-08-10
Publication date: 2019-07-12
Anticipated expiration: 2028-08-10

Abstract

The utility model provides a kind of high-accuracy filtering device, is related to filtration and separation techniques field, and the device mainly includes tank body, valve member, backwash component, filter assemblies and gas supply assemblies；The valve member, backwash component and gas supply assembly are connected with the tank body, and the filter assemblies are located at the tank interior；The filter assemblies include the anti-something lost device of filtrate, filtrate and supporting plate, and the anti-something lost device of filtrate is located at the tank body top middle portion, and the supporting plate includes support component and the filter mesh layer that is laid in the support component, and the filtrate is filled to the filter mesh layer；It interspaces in advance among the support component and the tank base.This filter device effectively overcomes the sand leakage of traditional sand filtration technology, runs the defects of material, water flow short stream；Using air-water joint backwash, more preferably cleaning filtrate, guarantees that filtrate thoroughly cleans, restore filtrate completely；To ensure that validity, continuity and the formedness of device operation.

Description

A kind of high-accuracy filtering device

Technical field

The utility model relates to filtration and separation techniques field more particularly to a kind of high-accuracy filtering devices.

Background technique

Filter is used for multiple fields as a kind of separation of solid and liquid usual means.Currently in order to filter effect is improved, it is be situated between more Mass filter is praised highly extensively.More medium filter mainly includes simplified, cloth water assembly, support component, backwash component, filtrate And the components such as exhaust valve, most important one filtrate mostly use quartz sand, anthracite, active carbon, magnetic iron ore, manganese sand etc. as Jie Matter filtrate generally uses double base or ternary medium filtrate.It is anti-that conventional filter backwash mode mostly uses washing or gas and water to combine It washes；Backwash gas mostly uses air blower, and minority uses compressed air.

But more medium filter Shortcomings: 1, the particle diameter of filter medium used is larger and non-porous, and it is short to lead to effectively to filter diameter, mistake It is low to filter precision；2, a variety of filtrates coexist, and backwash water-gas distribution is uneven, lead to grain composition unrest layer；3, usual when being backwashed Cause expansion height uneven due to multistage filtrate using air blower+backwash water/gas, and then leads to random layer or filtering layer height Unevenly；4, due to backwash intensity unevenness when backwash, the low place of intensity, the mutual collision opportunity of filtrate is few, and momentum is small, is not easy clear Wash clean, the suspended matter of attachment are easy to be attached to each other, and are formed compared with big flocculating body, are attached to filtrate or other impurities surface layer, work as backwash Terminate filtering layer grade timing again, which will enter lower layer's filtrate with filtrate and impurity, more be not easy to clean up, into And influence outlet effect；5, backwash intensity is inadequate, although can remove most of impurity, filtering layer surface cannot remove greasy dirt It removes, which can retain and be gradually accumulated in the filter, and it is hardened to easily lead to filter leaching material in the past for a long time；6, due to tank body Structure does not have the anti-something lost device of filtrate, filtrate easily occurs and runs material, material leakage phenomenon.

In conclusion needing to find a kind of high-effciency filter that can effectively overcome the above problem.

Utility model content

The purpose of this utility model is to provide a kind of high-accuracy filtering devices, thus solve it is existing in the prior art before State problem.

To achieve the goals above, the technical solution adopted in the utility model is as follows:

A kind of high-accuracy filtering device mainly includes tank body, valve member, backwash component, filter assemblies and gas supply assembly；

The valve member, backwash component and gas supply assembly are connected with the tank body, and the filter assemblies are located at described Tank interior；

The filter assemblies include the anti-something lost device of filtrate, filtrate and supporting plate, and the anti-something lost device of filtrate is located at the tank Body top middle portion, the supporting plate include support component and the filter mesh layer that is laid in the support component, the aperture of filter mesh layer It is slightly less than particle diameter of filter medium, the filtrate is filled to the filter mesh layer；It is reserved among the support component and the tank base Gap.

Preferably, the top of the tank is arc-shaped, and the anti-something lost device of filtrate is mounted on the tank body center, is used Filtrate is run out of when preventing backwash.

Preferably, the valve member includes safety valve, produces water valve, blowdown valve, inlet valve and precipitation valve；The safety valve It is set to right above the anti-something lost device of the filtrate by pipeline, the air pressure balance of tank interior when for guaranteeing air purge；The production Water valve is located at the tank body lower end, is connected with the production water pot for storing filtrate；The inlet valve and the precipitation valve are set respectively It sets on the tank wall above the filtrate, installation site is above filtrate packed height, and the blowdown valve is disposed in proximity to institute State the position of top of the tank.

Preferably, the backwash component includes that flushing tracheae and backwash inlet valve, the flushing tracheae are distributed in the tank Among body bottom and the support component, it is connected with feeder, the backwash inlet valve is connected with the water pipe for producing water valve, It is all set in the tank body bottom end.

Preferably, the flushing tracheae forms (not shown) by valve, tracheae and nozzle, is divided into the first flushing tracheae Tracheae is rinsed with second, described first, which rinses tracheae, is located at the second flushing tracheae upper side, and the nozzle is interspersed, It is more abundant to the backwash of filtrate to guarantee.

Preferably, the feeder includes air compressor and air accumulator, the air accumulator respectively with the air pressure Contracting machine is connected with the flushing tracheae.

Preferably, the filtrate is using lightweight, the particulate material filling of micropore, single particle size, including volcanic rock, wheat meal One of stone and other light porous filtrates, the filter mesh layer include that coarse net, gasket and aperture are less than particle diameter of filter medium Fine-structure mesh.

It preferably, further include short flow resistance blocking means in the inner tank wall, for preventing dirt between filtrate and tube wall Gap, which flows into, produces water area, forms the short stream of water flow, guarantees filtering accuracy.

Preferably, it is connected between the tank body and safety valve, production water valve, blowdown valve, inlet valve and precipitation valve using pipeline.

It is worth noting that, the filter effect quality of filter device can be influenced by filtrate and strainer, therefore guaranteeing height The premise of precision filter effect is to thoroughly wash filtrate in time, during carrying out air purge, air compressor and air accumulator Air force is provided, the nozzle moment for rinsing tracheae sprays vigorous gas, forms upward filtrate sand column, forms wink around sand column Between negative pressure, the filtrate of surrounding then flows downward, and by mechanical friction, under the collective effect of gas and water flow, generates powerful cut Shear force generates the siphon of moment and dirt is discharged.All filtrates both participate in circulation during the backwash process, backwash very thorough Bottom, dirt take tank body out of by backwash water.

The beneficial effects of the utility model are:

Filter device provided by the utility model effectively overcomes the sand leakage of traditional sand filtration technology, race material, the short stream of water flow etc. Defect；Filtrate uses the form of homogeneous particle, thoroughly solves the problems, such as filtrate unrest layer and material leakage；Traditional bed course is changed into work Make filtering layer, improve effective filtration path and holds dirty space.Filter material surface gathers micropore, considerably increases the contact surface with water Product, with better filter effect, higher filtering accuracy compared with the filtrates such as quartz sand.

High-accuracy filtering device backwash is backwashed using subregion, high pressure, replaces more medium filter using compressed air Backwash air blower has stronger backwash intensity, better backwash effect compared with more medium filter；Backwash tracheae is divided into up and down It two layers, can produce different air purge intensity, more preferably cleaning filtrate, guarantee that filtrate thoroughly cleans, restore filtrate completely；Cause This, has better backwash effect than more medium filter, to ensure that the validity of system operation, continuity and good Property.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of high-accuracy filtering device；

Fig. 2 is the artwork that high-accuracy filtering device works；

Fig. 3 is high-accuracy filtering device and more medium filter to be respectively adopted suspended matter is obtained by filtration using identical filtering velocity to contain Measure curve graph；

1. air compressor；2. air accumulator；3. safety valve；4. blowdown valve；5. precipitation valve；6. the anti-something lost device of filtrate；7. into Water valve；8. filtrate；9. short flow resistance blocking means；10. supporting plate；Rinse tracheae；Produce water valve；Backwash valve；Water inlet Pump；Filter device；Produce water pot；Backwash water pump.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing, to this reality It is further elaborated with novel.It should be appreciated that the specific embodiments described herein are only used to explain that this is practical It is novel, it is not used to limit the utility model.

As shown in Figure 1, effective filter mainly includes tank body, valve member, backwash component, filter assemblies and gas supply group Part；The top of the tank is arc-shaped, and the valve member, backwash component and gas supply assembly are connected with the tank body, described Filter assemblies are located at the tank interior；

Filter assemblies include the anti-something lost device of filtrate, filtrate, supporting plate, and the anti-something lost device of filtrate is located at tank body top middle portion, institute It states supporting plate to be made of support component and the filter mesh layer being laid in, the filtrate is filled to the filter mesh layer；Support component It interspaces in advance with tank base centre.

Filtrate uses the volcanic rock particle with aperture herein, and there are also short flow resistance blocking means, the dresses on tank interior wall It sets and inner tank wall is welded in using angle steel, produce water area for preventing dirt gap between filtrate and tube wall from flowing into, form water Short stream is flowed, guarantees filtering accuracy.

Filter mesh layer forms (not shown) by coarse net+gasket+fine-structure mesh, and the aperture of fine-structure mesh is less than particle diameter of filter medium, is used for Carry filtrate.

The anti-something lost device of filtrate is by tubular grid, taper retention device, anti-something lost appliance stand and anti-something lost device mounting flange group At the tubular grid is nested in inside taper retention device, is fixed to by anti-something lost appliance stand and anti-something lost device mounting flange Top of the tank.

The valve member includes safety valve, produces water valve, blowdown valve, inlet valve and precipitation valve；The safety valve is located at tank Body top is connected with anti-something lost device is filtered, and effect is to guarantee that pressure is normal in tank body when carrying out normal filtration；Produce water Valve is located at tank body lower end, and between supporting plate and tank bottom, the present apparatus is mounted on the filtrate using tangential water inlet, the inlet valve On the tank wall of top；This filter device may accumulate more liquid before carrying out gas back flushing in tank, therefore carry out It before gas back flushing, needs to reduce water level, prevents the presence of a large amount of water bodys during air purge, influence air purge effect, guarantee gas There is sufficient space, to reach air purge desired effect, precipitation valve is set to tank body upper end by the present embodiment, slightly above when washing in tank Filtrate packed height；Blowdown valve is used to for the intracorporal dirt of tank being discharged, and is disposed in proximity on the tank wall of abhiseca；Precipitation valve and row Dirty valve is connected with the pipeline of safety valve.

The backwash component includes rinsing tracheae and backwash inlet valve, and the flushing tracheae is distributed in tank base and support Among component, it is connected with feeder, rinses tracheae and be made of valve, tracheae and nozzle, be divided into the first flushing tracheae and second Tracheae is rinsed, described first, which rinses tracheae, is located at the second flushing tracheae upper side, and the nozzle is interspersed；The backwash into Water valve is connected with the water pipe for producing water valve.

The feeder includes air compressor and air accumulator, the air accumulator respectively with the air compressor and institute Flushing tracheae is stated to be connected.

When being backwashed, gas momentum is provided by air accumulator, after opening valve, the nozzle moment for rinsing tracheae sprays Vigorous gas forms upward filtrate sand column, forms moment negative pressure around sand column, the filtrate of surrounding then flows downward, by machine Under the collective effect of tool friction, gas and water flow, generate powerful shearing force, the siphon of moment and dirt is discharged.All filters Material both participates in circulation, and backwash is very thorough, and dirt and backwash water are expelled in pipeline through blowdown valve and precipitation valve, most afterwards through arranging Dirty mouth drains into outside tank together.

It is first before use, filtrate surface layer itself has because loading volcanic rock filtrate in device when using the filter device for the first time Many dust need to be removed, it is therefore desirable to carry out air purge, washing to high-accuracy filtering device；

1. tap water impregnates；Tap water is injected into high-accuracy filtering device from water inlet pipe or backwash water pipe, to device Interior water filling, while safety valve is opened, after safety valve pipeline there are flowing out, inlet valve is closed, water filling terminates.

2. pair filtrate impregnates after ten minutes, while opening precipitation valve and safety-valve, when water is down to precipitation valve water level, Precipitation valve is closed, subregion backwash one by one is carried out to filtrate using air purge pipeline, after subregion backwash one time, stops gas back flushing；It opens Blowdown valve or safety valve are opened, while opening backwash water pump and carrying out backwash；After water body is slightly limpid, backwash water pump is closed；It repeats Operation 1 and 2；So several times after, cleaning finishes；It is transferred to normal filtration；

When carrying out normal filtration using the filter device, the process flow used is as shown in Fig. 2, unlatching intake pump, beats High-accuracy filtering device inlet valve and tank deck safety-valve are opened, after tank deck safety-valve there are flowing out, is gradually opened high-precision It spends filter device and produces penstock, and closed safe valve, adjust flowing water Valve and inlet valve, be maintained at Inlet and outlet water pressure difference 0.3—2.0 ㎏；Guarantee filtering velocity in 12 (± 2) m simultaneously³/ ㎡ h or so.The water for producing water valve outflow flow to produce and store in water pot, It produces water pot upper end and is provided with overflow port, water is excessive in water pot for preventing from producing, and discharge outlet is arranged in bottom, produces water pot convenient for cleaning When sewage discharge.

After a period of use, the impurity of filtering can be attached to filter material surface to filter device, in order to guarantee filter effect, because This needs to clean filtrate.When there is following situations, need to clean filter device:

A. high-precision filter filter device effluent quality is deteriorated, and suspension content increases；

B. high-precision filter filter device inlet pressure value raising reaches 0.4MPa.

This filter device carries out backwash, and specific step is as follows:

S1. air purge

Air compressor output pressure value is controlled in 0.4---0.7MPa；

Inlet water lifting pumps are switched into " stopping " state, while opening precipitation valve and safety-valve, are down to precipitation to water When valve water level, precipitation valve is closed；Subregion backwash one by one is carried out to filtrate using air purge pipeline, after subregion backwash one time；Stop gas Body backwash；

S2. it washes

Blowdown valve or safety valve are opened, while opening backwash water pump and carrying out backwash；After water body is slightly limpid, backwash is closed Water pump；Repeat above-mentioned S1 and S2 operation；After such 3 times, cleaning is finished；Switch to normal filtration state.

It, can also be using air-water joint backwash, i.e., using air compressor machine in addition to using independent air purge, independent washing While backwash gas carries out air purge, opens backwash water pump and washed；

Using air-water combine backwash specific steps are as follows:

Safety valve is opened, inlet valve is closed, opens backwash air compressor machine progress air purge simultaneously, while opening backwash water pump, into Row backwash；Backwash water inflow should suitably be reduced at this time；

Suspension content is how many in backwash time and backwash cycle and water-in and water-out and high-accuracy filtering device filtering velocity size It is closely related；

According to practical operation situation, when filtering velocity is 8 (± 2) m3/ ㎡ h, water inlet 30 ㎎ of suspended matter/L or so, out aqueous suspension For object in 2 ㎎/L or so, high-accuracy filtering device backwash cycle is 48 hours or so；The backwash time is 30min or so.

Test is compared using the filter device and more medium filter of the utility model, is measured under identical filtering velocity outstanding The content for producing suspended matter in water at water valve of floating object, for result as shown in figure 3, abscissa is sample time, ordinate is filtering The content of suspended matter in sampling water afterwards, as seen from the figure, the suspension content for the water being obtained by filtration using the present apparatus are entirely being taken No significant difference in the sample time, conversely, suspension content is situated between with filtering in water after being filtered using more medium filter Matter has obvious fluctuation using the time, and is above the suspension content of water obtained by the filtering of the present apparatus.

By using above-mentioned technical proposal disclosed by the utility model, following beneficial effect has been obtained:

Filter device provided by the utility model effectively overcomes the sand leakage of traditional sand filtration technology, race material, the short stream of water flow etc. Defect；Filtrate uses the form of homogeneous particle, thoroughly solves the problems, such as random layer and material leakage；Traditional bed course is changed into work filter Layer improves effective filtration path and holds dirty space.Filter material surface gathers micropore, considerably increases the contact area with water, with The filtrates such as quartz sand compare with better filter effect, higher filtering accuracy.

High-accuracy filtering device backwash replaces multimedium mistake using compressed air using subregion, air-water joint backwash Filter backwash air blower has stronger backwash intensity, better backwash effect compared with more medium filter；Backwash tracheae is divided into Upper layer and lower layer guarantee the thorough cleaning of filtrate, restore filtrate completely；Therefore, there is better backwash than more medium filter Effect, to ensure that validity, continuity and the formedness of system operation.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching should also regard the protection scope of the utility model.

Claims

1. a kind of high-accuracy filtering device, which is characterized in that mainly include tank body, valve member, backwash component, filter assemblies and Gas supply assembly；

The valve member, backwash component and gas supply assembly are connected with the tank body, and the filter assemblies are located at the tank body It is internal；The filter assemblies include the anti-something lost device of filtrate, filtrate and supporting plate, and the anti-something lost device of filtrate is located at the tank body top End middle part, the supporting plate include support component and the filter mesh layer that is laid in the support component, and the filtrate is filled to institute It states on filter mesh layer；It interspaces in advance among the support component and the tank base；

The anti-something lost device of filtrate is by tubular grid, taper retention device, anti-something lost appliance stand and anti-something lost device mounting flange group At the tubular grid is nested in inside taper retention device, is fixed to by anti-something lost appliance stand and anti-something lost device mounting flange Top of the tank；

The filtrate includes coarse net, sealing using lightweight, the particulate material filling of more micropores, single particle size, the filter mesh layer Pad and aperture are less than the fine-structure mesh of particle diameter of filter medium.

2. filter device according to claim 1, which is characterized in that the top of the tank be it is arc-shaped, the filtrate is anti- It loses device and is mounted on the tank body center, filtrate is lost when for preventing backwash.

3. filter device according to claim 1, which is characterized in that the valve member includes safety valve, produces water valve, row Dirty valve, inlet valve and precipitation valve；The safety valve is set to right above the anti-something lost device of the filtrate by pipeline, the production water valve Positioned at the tank body lower end, the inlet valve and the precipitation valve are arranged on the tank wall above the filtrate, the row Dirty valve is disposed in proximity to the position of the top of the tank.

4. filter device according to claim 3, which is characterized in that the backwash component include rinse tracheae and backwash into Water valve, the flushing tracheae are distributed among the tank base and the support component, are connected with feeder, the backwash Inlet valve is connected with the water pipe for producing water valve, is all set in the tank body bottom end.

5. filter device according to claim 4, which is characterized in that the flushing tracheae is by valve, tracheae and nozzle sets At, it is divided into the first flushing tracheae and second and rinses tracheae, described first, which rinses tracheae, is located at the second flushing tracheae upper side, And the nozzle is interspersed.

6. filter device according to claim 4, which is characterized in that the feeder includes air compressor and gas storage Tank, the air accumulator are connected with the air compressor and the flushing tracheae respectively.

7. filter device according to claim 1, which is characterized in that the filtrate is volcanic rock or medical stone.

8. filter device according to claim 1, which is characterized in that further include short flow resistance gear dress in the inner tank wall It sets, produces water area for preventing dirt gap between filtrate and tube wall from flowing into, form the short stream of water flow, guarantee filtering accuracy.

9. filter device according to claim 3, which is characterized in that the tank body and the safety valve, the production water valve, It is connected between the blowdown valve, the inlet valve and the precipitation valve using pipeline.