Application:
HX thrash racks are designed to separate floating debris or adrift impurities from liquid. They serve mainly the municipal as well as industrial effluent water treatment plants, waterworks, or irrigation canals, or if you like anywhere where separation of floating debris or insoluble materials is required when contained in liquid that flows within the open sewer. It constitutes a stage called mechanical pretreatment of water.
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Function Description: Water led to the sewer full of suspended solids flows over the rack (bar screen) lamellas. These are made of steel bands (strips) with firmly set width of anchoring slot within the support frame. Insoluble or floating materials larger than the slot width get caught on the lamellas. Raking device starts automatically within the time intervals adjusted. This raking device comprises a raking bar and cleaning brushes used to rake the caught floating debris or insoluble materials from lamellas into the hydraulic press’hopper and operating chamber. Once inside operating chamber the hydraulic press will dewater the rackings, press them and convey them into the container via the conveyance piping. The adjustments of raking the solids and pressing the rackings as such are independent. The standard width of the slots between rack lamellas is normally 6 mm. The entire equipment is made of corrosion proof steel 17 241. Specifications: HX racks are electric motor driven via hydrostatic transmission.Electric motor power installed equals to 0,7 kW. Hydraulic set’s operating pressure is 16 MPa. There is fully automatic control with the possibility of independent setting up the time for raking and pressing the rackings. Normally the equipment will be installed inside concreted sewer of respective width. Conveying piping with pressed rackings is able to be led under the 45°or 90o angles. Maximal conveyance height for pressed rackings is 5 m. |
Hydraulic Parameters:
| TYPE | Sewer Size |
Rack Performance Parameters |
|||
Width "W" (mm) |
Height "H1" (mm) |
Maximal Level (mm) |
Maximal Flowrate Q (l/s) |
Power Input Installed N (kW) |
|
| HX 400 | 400 |
400 |
200 |
40 |
0,75 |
400 |
800 |
400 |
80 |
0,75 |
|
400 |
1300 |
650 |
130 |
1,10 |
|
| HX 500 | 500 |
500 |
250 |
62,5 |
0,75 |
500 |
900 |
500 |
125 |
1,10 |
|
500 |
1300 |
700 |
175 |
1,50 |
|
| HX 600 | 600 |
600 |
300 |
90 |
0,75 |
600 |
900 |
500 |
150 |
1,10 |
|
600 |
1300 |
800 |
240 |
1,50 |
|
HX thrash racks scheme:
Download: AutoCAD_01
Legend:
- 1 - Supporting frame
- 2 - Operating chamber of the hydraulic press
- 3 - Drive of HM1 hydraulic press operating piston
- 4 - Drive of raking device to rake HM2 and HM3 suspended solids
- 5 - Thrash rack lamellas
- 6 - Raking bar
- 7 - Cleaning brushes
- 8 - Hydraulic unit
- 9 - Electric switchboard
- 10 - Conveyance piping for pressed rackings
Building and Anchoring Dimensions:
| Type | Rack Dimensions |
Sewer Dimensions |
||||
Width "W" (mm) |
Length "L" (mm) |
Height "H" (mm) |
Height "H2" (mm) |
Width "W" (mm) |
Height "H1" (mm) |
|
| HX400 | 400 |
1010 |
2160 |
230 |
400 |
400 |
400 |
1255 |
2325 |
180 |
400 |
800 |
|
400 |
1442 |
2555 |
110 |
400 |
1300 |
|
| HX 500 | 500 |
1010 |
2160 |
130 |
500 |
500 |
500 |
1255 |
2325 |
80 |
500 |
900 |
|
500 |
1442 |
2555 |
110 |
500 |
1300 |
|
| HX 600 | 600 |
1010 |
2160 |
30 |
600 |
600 |
600 |
1255 |
2325 |
80 |
600 |
900 |
|
600 |
1442 |
2555 |
110 |
600 |
1300 |
|
All the racks will be anchored to the trough’s (channel’s) upper surface
by means of metric anchores into the concrete. Anchoring dimensions -
M10 two-sided at the distance of 50 mm from the outside edge of the supporting
frame.
| Conveyance piping for pressed rackings | |
| Diameter of conveyance piping for pressed rackings | 204, DN 200 |
| Conveyance piping slope angle | 45°, 90° |
| Conveyance piping‘s fitting flange dimensions | DN 200, PN 6 |
| Maximal conveyance height of pressed rackings starting from H2 size | 3500 |
Material Type
Rack’s mechanical raking parts are made of corrosion proof steel class 17241. Hydraulic unit is made of normal structural steel complete with surface finish using synthetic paint. Electric switchboard is of plastic version.
Ordering:
Your order should include the following:
- Number of pieces
- Sewer width
- Sewer height
- Required width of the gaps between lamellas – in case it differs from the standard one
- Minimal and maximal levels upstream the racks
- Delivery location and date
- Contact person, phone, fax, or any other requirements
Specifications of the Supply:
Part of supply are the mechanically raked racks including hydraulic press
designed for the rackings, electrical switchboard, control system and
conveyance piping for the rackings terminated with flange DN 200, PN 6
of total length 500 mm from the side wall of racks’supporting frame. Basic
transition is provided via the anchoring of mechanically raked racks by
means of the frame to the supporting structure with the spacing of anchor
bolts A x B. Please specify in more detail any other requirements as far
as anchoring and sewer tie-in are concerned.
Terms:
Offer will be developed within 24 hours.
Supply of the equipment takes about 10 weeks.
Guarantees and Services :
There is 24-month guarantee for equipment. We provide for after-guarantee
services within two weeks after receipt of your request.
Advantages of the Equipment:
High life of the equipment. Easy to operate. Minimal operating requirements. High efficiency of mechanical pretreating (preliminary clarification) of liquids. Rack lamellas, after having finished raking the floating or insoluble materials, undergo additional cleaning with cleaning brushes. The front moving parts of the equipment are not under the liquid level. Separation of floating and insoluble materials along with their pressing are contained within one single unit. Hydrostatic transmission provides very effective protection to the drive motor against being damaged due to overloading.
Example of HX mechanical raking rack installation:
