Stainless steel bag emptying station
The ECAD bag emptying station is our own stainless steel design: an enclosed chamber with a lid and viewing window, a four-bag feed hopper and an outlet with a Tri-Clamp connection. The first version was built for standard cement bags. Upon agreement, we adapt it for other bulk materials.
- Construction
- AISI 304 stainless steel
- Dimensions and weight
- 840 × 870 × 1750 mm, 110 kg
- Bag
- standard cement bag, 25–35 kg
- Control
- automatic and manual mode
We specify the throughput in our quotation for your material and bag. Full technical data can be found further down the page.
Bag emptying in an enclosed chamber
The chamber is enclosed and the station operates with an external dust extractor connected to a spiral duct spigot. This limits dust emissions into the hall. The result depends on the material and how the bag is opened.
Lid with viewing window
The sloped lid has a handle and a polycarbonate viewing window showing the inside of the chamber. Arms and gas struts hold the lid open.
Chamber and table
An EPDM seal runs around the chamber opening. Inside sits a table with a toothed bar and pins, folded by a pneumatic cylinder.
Feed hopper and outlet
Below the chamber is a conical hopper with a capacity of four cement bags, ending in an outlet with a Tri-Clamp connection.
Frame and electrical enclosure
The chamber and hopper are supported by a frame on legs with adjustable feet. Next to the hopper is the electrical enclosure.
Cement and other bulk materials
We built the station for standard cement bags, 25–35 kg. Upon agreement, we adapt it for other bulk materials. Before preparing a quote, we agree with you on the material, bag, discharge point and operating environment.
The station described on this page is designed for cement. Its operating manual excludes caked or moisture-reactive materials, wet bags and operation without dust extraction.
The adaptation is designed by our design office. If the dust is combustible or explosive, please state this in your enquiry. This affects whether we take on the order.
Material
Name, moisture content, and tendency to dust and cake.
Bag
Type, weight, dimensions and number of bags per shift. Our station is designed for 25–35 kg bags.
Discharge point
Where the material goes: connection type and outlet height.
Operating environment
Hall conditions and hygiene requirements.
How the bag emptying station works
The station has two operating modes. In automatic mode, a single press of Start runs the entire bag emptying sequence, while in manual mode the operator controls it step by step.
Bag on the table
The operator opens the lid, places the bag on the table, closes the lid and presses Start. With the lid open, the station will not start: the lid safety switch prevents this.
Bag emptying
The serrated blade slits the bag while the pins hold it in place. A pneumatic cylinder folds the table via scissor arms and the bag empties.
Vibration and outlet
Once the table folds, table and hopper vibration assists emptying, and the table returns to its home position. The material leaves the hopper through an outlet with a Tri-Clamp connection that links the station to your conveying system or plant.
A level sensor in the hopper signals a low material level. The views come from the station drawings prepared by our design office.
Technical data of the bag emptying station
Data from the documentation of the manufactured station: operating manual, diagrams and drawings. We adapt the station to other bags or materials, so dimensions and equipment may differ.
Dimensions and supply
- Dimensions (depth × width × height)
- 840 × 870 × 1750 mm; height with lid open 1970 mm
- Mass
- 110 kg
- Electrical supply
- 230 V AC, 50 Hz, 24 V DC control; recommended protection: C16 A miniature circuit breaker and residual current device
- Compressed air
- 8 bar ±0.5 bar, dry and oil-free; air preparation unit included in the station
Construction
- Material
- AISI 304 stainless steel
- Support
- legged frame with adjustable swivel levelling feet, anchored to the floor
- Lid
- sloped, with polycarbonate viewing window and EPDM seal, two gas springs, safety switch
- Worktable
- folding via scissor arms driven by a pneumatic cylinder; serrated blade and 16 retention pins
- Table cylinder
- pneumatic, piston diameter 63 mm, stroke 220 mm
Emptying and control
- Bag
- standard cement bag, 25–35 kg
- Hopper
- capacity of four standard cement bags, outlet with Tri-Clamp connection
- Vibration
- two pneumatic vibrators: for the table and the hopper
- Level sensor
- vibrating level switch in the hopper, low-level indication
- Dust extraction
- spigot for spiral ducting to an external dust extractor; the station operates with extraction connected
- Control
- programmable controller and seven-element control panel; automatic mode (full sequence) and manual mode (step by step)
Operating conditions and documentation
- Location
- production hall or workshop, levelled concrete floor or rigid steel structure
- Ambient temperature
- from +5 to +35 °C
- Documentation
- operating manual in accordance with PN-EN ISO 20607, electrical and pneumatic diagrams, manufacturing drawings
- Compliance
- CE mark
Throughput and cycle time are not listed on the website because they depend on the material and the bag. We specify them in the quotation.
What the station consists of
Two assembly drawings with labelled parts. The item numbers on the drawings and in the adjacent parts lists match those in the station’s operating manual.
Lid, air supply and level sensor
- 2
- Air preparation unitfilter and pressure regulator
- 3
- Soft-start valve
- 4
- Vibrating level switchin the hopper, signals low material level
- 6
- Bearings in the lid armstwo units
- 7
- Lid safety switch
- 8
- Switch actuatoron the lid
- 9
- Lid gas springstwo units
Worktable
A pneumatic cylinder folds the table via scissor arms. The serrated blade sits between the table halves, with retention pins arranged in two rows on either side.
- 1
- Pneumatic cylinderpiston diameter 63 mm, stroke 220 mm
- 5
- Bearings in table pivot pointsfour pieces
- 10
- Toothed blade2 mm stainless steel sheet metal, laser-cut teeth
- 11
- Pins16 pieces, hold the bag in place
Control panel and safety features
The control panel below the chamber has seven elements in a single row: three switches (hopper vibration, table vibration, lighting), three illuminated pushbuttons (Reset, Start, Stop) and an E-STOP mushroom button.
- Start
- starts the full bag emptying sequence
- Stop
- stops the running sequence
- Reset
- clears faults, returns the table to the home position and resets the safety system
- E-STOP
- the mushroom button latches when pressed and immediately cuts power to the control circuit, preventing any machine movement
- Vibration
- two two-position switches, separate for the hopper and the table
- Lighting
- work area lighting switch
Lid safety interlock switch
The station will not start when the lid is open.
Lockable main switch
The main switch can be padlocked (LOTO) for maintenance work.
Inspections and spare parts
The inspection schedule, spare parts list and troubleshooting table are included in the operating manual.
ECAD’s own design, built in Lodz
We build the station at our plant at ul. Elektronowa 6. We also design and build custom machines.
- Design
- 3D model, part production drawings, schematics and operating manual from our design office
- Plant
- ul. Elektronowa 6, 94-103 Lodz
- Sheet metal
- laser cutting and bending at the same plant
- Stainless steel
- stainless steel welding at a dedicated workstation
- Certificates
- EN ISO 3834-2 covers welding of austenitic stainless steels (group 8.1), while ISO 9001:2015 covers machine design and machine building. View certificates
- Laser welding
- the station enclosure shown in the photos was laser welded; laser welding is not covered by our certificates. See laser welding
Three parts from the production drawings
The station comes with part production drawings. Here we show three: the toothed blade, the lid arm and the lid panel with the viewing window cutout. The drawings show dimensions and sheet metal flat patterns.
Custom bag emptying station
We do not publish prices. We quote each station based on the description of your material, bag and installation. The more items from this list you send, the fewer follow-up questions we will need to ask:
- name and description of the bulk material
- bag type and weight
- number of bags emptied per hour or per shift
- where the material is routed after emptying
- photos and dimensions of the installation space
- hygiene requirements and shop floor conditions
- whether the dust is combustible or explosive
Prefer to call? +48 697 270 000 (Mon–Fri 8:00–16:00)
Prefer e-mail? biuro@ecad.com.pl
- Describe your material and bagMaterial name, bag type and weight, discharge point, requirements. Drawings: PDF, DXF, DWG, STEP, IGES.
- Attach photos of the installation siteThe space where the station will be installed. JPG, PNG, TIFF or a ZIP or 7Z archive; up to 10 files, up to 100 MB in total.
- We will reply with questions and a quoteWe will follow up on any missing details and prepare a quote for the station.
We process enquiry data in accordance with our privacy policy.
Questions about the bag emptying station
What materials is the bag emptying station designed for?
We built it for standard cement bags, 25–35 kg. By arrangement, we adapt it to other bulk materials. The operating manual for the station described on this page excludes caked or moisture-reactive materials and wet bags. Tell us what material and bags you are emptying, and we will work out how to adapt it. Start with the quote form.
How does the bag emptying station work?
The operator places the bag on the table, closes the lid and presses Start. The toothed blade slits the bag, the pins hold it in place, and the pneumatic cylinder folds the table so the bag empties. Table and hopper vibration assist emptying, and the material drops into a four-bag hopper and through a Tri-Clamp outlet into your installation. Step-by-step diagrams are in the How the station works section.
What are the dimensions, weight and power supply of the bag emptying station?
The station measures 840 × 870 × 1750 mm (depth × width × height), and 1970 mm in height with the lid open. It weighs 110 kg. It requires a 230 V AC power supply and 8 bar compressed air, while the control circuit runs on 24 V DC. Full specifications are in the Technical data section.
Does the bag emptying station have the CE mark?
Yes, the ECAD bag emptying station has the CE mark. Technical specifications of the completed station are in the Technical specifications section.
Does the station reduce dust emission?
The chamber is enclosed, and its interior can be seen through a window in the lid. The station has a spigot for a spiral duct and operates with an external dust extractor, which reduces dust emission to the shop floor. The manual prohibits operation without the extractor running. We do not promise zero dusting, as the result depends on the material and how the bag is opened.
How much does a bag emptying station cost and how many bags does it empty per hour?
We do not quote prices or throughput without data on the material and bag. We prepare a quote based on the description of the material, bag and installation as well as the quantity, and we state the throughput in the offer. Describe your application in the quote form.
Will you build a station to our requirements?
Yes, by arrangement. We design and build custom machines. Station adaptation is designed by our design office, and we weld stainless steel at our plant in Lodz.
What should I send to get an offer for a bag emptying station?
A description of the material and bag, discharge point, photos of the workstation and requirements. Files: PDF, DXF, DWG, STEP, IGES, photos, ZIP and 7Z; up to 10 files and 100 MB. Send them via the quote form.
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Do you handle bagged bulk material?
Describe your material and bag, and attach photos of the installation site for the station. We will reply with questions and a quote. Plant: ul. Elektronowa 6, Lodz, Mon–Fri 8:00–16:00, tel. +48 697 270 000.
