CN210176478U

CN210176478U - Flushing system and inner flushing assembly of grating dirt removing machine

Info

Publication number: CN210176478U
Application number: CN201920535525.3U
Authority: CN
Inventors: 郭贤文; 姜伟; 江晨
Original assignee: Chengdu Drainage Co Ltd
Current assignee: Chengdu Drainage Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-03-24
Anticipated expiration: 2029-04-19

Abstract

The utility model relates to a sewage treatment field, concretely relates to flushing system and interior flushing assembly of grid sewage disposal machine. The utility model discloses an install in the inboard interior washing person in charge of grid otter board of grid de-dirt machine, interior washing person in charge goes up the interval and installs one row of interior washing terminals, interior washing person in charge is external to have high-pressure water pipe, install the solenoid valve on the high-pressure water pipe. The rotatable elbow can be used for adjusting the washing direction of the spray head and the grid screen plate, so that the washing is more flexible; the inner washing nozzles are arranged in opposite washing directions and are staggered up and down, so that multi-angle comprehensive coverage type cleaning of the grid screen plate can be realized; the slag blocking plate is arranged to avoid the influence of slag falling on the inner flushing assembly, so that the operation stability of the inner flushing assembly is improved; the installation position of the inner and outer flushing assemblies is optimized, and the flushing effect of the inner flushing is improved by combining the pre-flushing of the outer flushing. The hair fiber attaching layer on the grid screen plate can be effectively removed, the running time of the grid screen plate is longer, and the trash blocking effect is better.

Description

Flushing system and inner flushing assembly of grating dirt removing machine

Technical Field

The utility model relates to a sewage treatment field, concretely relates to flushing system and interior flushing assembly of grid sewage disposal machine.

Background

The grid plate type internal inflow grid is novel efficient grid decontamination equipment integrating trash blocking and decontamination, and is compact in structure, small in size, high in slag intercepting efficiency and reliable in operation. More and more sewage treatment plants apply the internal inflow grille to the pretreatment stage, and the internal inflow grille can be used as a fine grille, an ultrafine grille and a membrane grille according to different sizes of water passing apertures. The grid mesh plate has the following problems in practical use: the slag on the screen plate is not washed cleanly, so that the flow is reduced due to the blockage of the water passing hole; fibrous slag is wound on the screen plate and cannot be removed by normal washing, so that blockage is caused; the components in the sewage make the screen plate easily scale, so that the screen plate is blocked.

The mode that sets up outer washing unit in the frame outside of grid sewage disposal machine is mainly adopted to the washing of grid otter board among the prior art, however in practical use, the inboard fibre such as hair that can adhere to of grid otter board, receive outer washing unit's washing effect, relevant impurity partly passes the otter board hole, one portion is stayed the otter board inboard, along with the increase of live time, this kind of hair fibre that adheres to on the otter board hole just more, progressively form the hair fibre layer of a layer water permeability extremely poor at the otter board inboard, they firmly adhere to on the otter board inboard, the sparge water can not wash from the outside and thin at all.

Therefore, it is urgently required to develop a washing device which is combined inside and outside and can wash off substances such as hair fibers and the like on the inner side of the grid mesh plate, realize deep cleaning of the grid mesh plate and improve decontamination efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at: aiming at the problems, the inner flushing component and the inner and outer flushing systems applied to the grid dirt removing machine are provided, so that substances such as hair fibers and the like attached to the inner side of the grid screen plate are effectively removed, and the grid screen plate is prevented from being blocked.

The technical scheme of the utility model is like this:

the utility model provides an interior subassembly that washes among grid dirt separator, is responsible for including installing in the interior washing of grid otter board inboard of grid dirt separator, interior washing is responsible for and is gone up the interval and install one row of interior washing terminals, interior washing is responsible for and is connected outward and have high-pressure water pipe, install the solenoid valve on the high-pressure water pipe. The solenoid valve can be controlled by a PLC control system and is used for starting and stopping the inner flushing assembly.

Further, the inner flushing nozzle consists of an elbow and a nozzle arranged on the elbow. Alternatively, the bend is a 90 ° rotatable bend. Alternatively, the elbow may be mounted below the inner main flush pipe, with the nozzle mounted at the front end of the elbow.

Furthermore, the inner washing spray heads are arranged in a staggered mode, the installation heights of the adjacent inner washing spray heads are different, the washing directions are opposite, and the installation heights of the inner washing spray heads in the same washing directions are the same. The left and right washing directions of the inner washing spray head are opposite and the inner washing spray head is arranged in an up-down staggered manner, so that multi-angle covering washing of the grid screen plate can be realized, dead zones caused by long-time washing in the same direction are avoided, and water flows of different methods are not interfered with each other.

Further, interior washing terminals spun water column and grid otter board inboard are the theta contained angle, the theta contained angle is the acute angle. The water column sprayed by the inner side washing nozzle forms an included angle theta with the inner side surface of the screen plate, and the included angle theta is obtained according to a formula F1 which is Fcos theta (F is water impact force, and F1 is tangential force of the water impact force decomposed to the surface of the screen plate), so that the hair fiber layer attached to the inner side of the screen plate is easier to be removed when the angle theta is smaller in a certain range, and the angle theta is optimized to be 30 degrees. When the angle theta is too small, the vertical impact force of the water impact force decomposed to the surface of the grid mesh plate is insufficient, and the hair fiber layer close to the pore part is not easy to remove.

Further, the inner flushing assembly further comprises a U-shaped arc slag trap, and the upper end of the main flushing pipe is arranged on the U-shaped arc slag trap. The arc section of U type arc slag trap is responsible for the laminating with interior washing, and vertical section both sides length is unequal, and the longer one side of vertical section is located directly over the nozzle. The slag trap is used for preventing the slag falling from the inner side of the screen plate from being hung on the 90-degree elbow and the nozzle, so that the internal flushing effect is influenced.

Further, the inner washing spray heads are arranged at even intervals.

The utility model also comprises a flushing system of the grille decontamination machine, which comprises the inner flushing component, the outer flushing component and a high-pressure water source in the prior art; the high-pressure water source comprises a centrifugal pump and a main pipeline connected with the centrifugal pump, and the main pipeline is divided into two branch pipelines which are respectively connected with the inner washing component and the outer washing component; and the inner flushing assembly is arranged at the rear end of the outer flushing assembly along the movement direction of the grating screen plate. The outer flushing component is an outer flushing main pipe arranged on the outer side of a grid screen plate in the grid sewage remover and a spray head arranged on the outer flushing main pipe. The order of washing inside and outside optimizing, after washing the subassembly outside will washing the subassembly setting in, can utilize outer washing subassembly earlier to detach general slag thing, the gravity that washes outward simultaneously can play certain scouring action to the inboard hair fibre of grid net board, reduces the adhesive force on hair fibre layer to improve subsequent interior washing effect.

Preferably, the flushing system can further comprise a filtering device, the filtering device can be mounted on the main pipeline by adopting a laminated filter or mounted on the branch pipeline by adopting a Y-shaped filter, and both ends of the filter are provided with manual valves for maintenance.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the hair fiber attachment layer on the grid screen plate can be effectively removed by arranging the inner washing component; the rotatable elbow can be used for adjusting the washing direction of the spray head and the grid screen plate, so that the washing is more flexible; the inner washing spray heads are arranged in a left-right washing direction and are staggered up and down, so that multi-angle covering type washing of the grid screen plate can be realized, and the washing is more comprehensive; the slag blocking plate is arranged to avoid the influence of slag falling on the inner flushing assembly, so that the operation stability of the inner flushing assembly is improved; the installation position of the inner flushing component is optimized, and the flushing effect of the inner flushing is improved by combining the pre-flushing of the outer flushing. After using this interior washing unit spare, the operating time of grid otter board is longer, and it is better to block dirty effect.

Drawings

FIG. 1 is a schematic elevational view of a grill cleaner incorporating the present flushing system;

FIG. 2 is a schematic view of the nozzle spray angle of the inner wash assembly;

FIG. 3 is a schematic side view of the present flushing system during operation of the grill cleaner;

fig. 4 is a partially enlarged view of a portion B in fig. 3.

The labels in the figure are: 1-outer washing main pipe, 2-outer washing nozzle, 3-inner washing main pipe, 4-inner washing nozzle, 5-centrifugal pump, 6-electromagnetic valve, 7-pressure gauge, 8-filtering device and 9-U-shaped arc slag trap.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, a flushing system applied to a grille shutter includes an outer flushing component installed at the outer side of a grille screen of the grille shutter and located at the center of the top, an inner flushing component installed at the inner side of the grille screen, and a high-pressure water source; the outer washing component comprises an outer washing main pipe 1 and an outer washing spray head 2 arranged on the outer washing main pipe 1; the inner flushing component comprises an inner flushing main pipe 3 and a row of inner flushing nozzles 4 which are uniformly arranged on the pipe at intervals; the high-pressure water source comprises a centrifugal pump 5 and a main pipeline connected with the centrifugal pump, the main pipeline is divided into two branch pipelines which are respectively connected with an outer washing main pipeline and an inner washing main pipeline, the two branch pipelines are respectively provided with an electromagnetic valve 6, the on-off of the two branch pipelines is controlled by a PLC, and the tail ends of the two branch pipelines can be provided with a pressure gauge 7.

Further, the inner washing main pipe 3 is connected with the body of the grating sewage-removing machine through a main pipe connecting base, and the inner washing spray head 4 is rotatably installed on the inner washing main pipe through threads. The inner washing nozzle 4 consists of a 90-degree rotatable elbow and a nozzle arranged on the elbow. The elbow is arranged below the inner washing main pipe 3, and the front end of the elbow is provided with a nozzle. The flushing angle between the inner flushing nozzle 4 and the grid screen plate can be adjusted by a 90-degree rotatable elbow. The inner washing spray heads 4 are arranged in a staggered mode, the installation heights of the adjacent inner washing spray heads 4 are different, the washing directions are opposite, and the installation heights of the inner washing spray heads 4 with the same washing directions are the same.

Further, as shown in fig. 1, the flushing system may further comprise a filtering device 8, the filtering device 8 may be mounted on the main pipeline by using a laminated filter, and the filter and the centrifugal pump 5 are provided with manual valves at two ends for maintenance.

As shown in fig. 2, the water column sprayed by the inner washing nozzle 4 forms an included angle theta with the inner side surface of the grid mesh plate, and the included angle theta is 30 degrees. According to the formula F1, which is Fcos θ (F is water impact force, F1 is water impact force decomposed to tangential force of the surface of the screen plate), the smaller the θ angle is, the easier the hair fiber layer attached to the inner side of the screen plate is to be removed.

As shown in fig. 3 and 4, the inner washing assembly of the grating further comprises a U-shaped arc-shaped slag trap 9, optionally, the U-shaped arc-shaped slag trap 9 can be a stainless steel plate, and the U-shaped arc-shaped slag trap 9 is installed at the upper end of the inner washing main pipe 3. The arc-shaped section of the U-shaped arc-shaped slag trap 9 is fixedly jointed with the inner flushing main pipe 3 in a welding manner, the two sides of the vertical section are unequal in length, and the longer side of the vertical section is positioned right above the nozzle.

As shown in fig. 4, the inner flushing main pipe 3 is provided in the grill cleaner 1 at the rear end of the outer flushing member in the moving direction of the grill net plate.

The utility model discloses an operation process as follows:

the internal flushing assembly has two operating conditions: firstly, after the grating runs for a long time to form an adhesive layer, the inner part of the screen is washed once (the running times can be set); and secondly, after the liquid level difference between the front and the back of the grating reaches a set upper limit value, the inner washing of the screen plate starts to operate until the liquid level difference is reduced to a normal value.

The operation of the outer flushing component can not be stopped in the operation process of the inner flushing component. After the centrifugal pump 5 is started, the PLC controls the electromagnetic valve 6 to realize water inflow of the external washing main pipe 1 and the internal washing main pipe 3, the grid screen plate runs along the circumferential direction of a chain of the grid sewage disposal machine, firstly, the grid screen plate passes through the external washing component, common residues are removed by using the external washing component, and meanwhile, the impulsive force of the external washing can play a certain role in washing hair fibers on the inner side of the hole of the grid screen plate, so that a part of through holes are formed and the effect of reducing the adhesive force of a hair fiber layer is achieved; then the grid screen passes through the inner washing component, the inner washing nozzle 4 sprays water columns, water flow impacts the inner side of the grid screen at a certain angle, the impact force of the water flow can be decomposed into tangential force on the surface of the grid screen and forward impact force on the screen, the forward impact force is used for scattering the hair fiber layer, and the tangential force on the surface is used for washing the hair fiber layer and dropping the hair fiber layer.

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 modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an interior washing assembly of grid sewage disposal machine which characterized in that: the inner flushing device comprises an inner flushing main pipe arranged on the inner side of a grid screen plate of a grid sewage disposal machine, wherein a row of inner flushing nozzles are arranged on the inner flushing main pipe at intervals, a high-pressure water pipe is externally connected to the inner flushing main pipe, and an electromagnetic valve is arranged on the high-pressure water pipe.

2. An internal flush assembly according to claim 1, wherein: the inner flushing nozzle consists of an elbow and a nozzle arranged on the elbow.

3. An internal flush assembly according to claim 2, wherein: the elbow is a 90-degree rotatable elbow.

4. An internal flush assembly according to claim 1, wherein: the inner washing spray heads are arranged in a staggered mode, the installation heights of the adjacent inner washing spray heads are different, the washing directions are opposite, and the installation heights of the inner washing spray heads in the same washing directions are the same.

5. An internal flush assembly according to claim 1, wherein: interior washing terminals spun water column and grid otter board inboard are the theta contained angle, the theta contained angle is the acute angle.

6. An internal flush assembly according to claim 5, wherein: the included angle theta is 30 degrees.

7. An internal flush assembly according to claim 2, wherein: the inner washing component of the grating further comprises a U-shaped arc-shaped slag trap, and the upper end of the main washing pipe is arranged on the U-shaped arc-shaped slag trap.

8. An internal flush assembly according to claim 7, wherein: the arc section of U type arc slag trap is responsible for the laminating with interior washing, and vertical section both sides length is unequal, and the longer one side of vertical section is located directly over the nozzle.

9. An internal flushing assembly as claimed in any one of claims 1 to 8, wherein: the inner washing spray heads are arranged at even intervals.

10. The utility model provides a rinse-system of grid sewage disposal which characterized in that: comprising an inner flushing assembly, an outer flushing assembly, a high pressure water source according to any one of claims 1-9; the outer washing component comprises an outer washing main pipe arranged outside a grid screen plate in the grid sewage remover and a spray head arranged on the outer washing main pipe; the high-pressure water source comprises a centrifugal pump and a high-pressure water pipe connected with the centrifugal pump, the high-pressure water pipe is divided into two branch pipelines which are respectively connected with the inner washing assembly and the outer washing assembly, and the branch pipelines are provided with electromagnetic valves; and the inner flushing assembly is arranged at the rear end of the outer flushing assembly along the movement direction of the grating screen plate.