dongda electromechanical limited liability company

Hello, fellow examiners (judges)! I am an electric pneumatic pressureless damper. I am this year old and graduated from Jining Dongda Mechanical and Electrical School. I like coal mines and am good at reducing hazards and ensuring coal mine safety. I am very happy to attend your interview today and hope you will be admitted. I very much hope to get this precious opportunity to contribute my meager strength!
Electric pneumatic pressureless damper product introduction
The pressureless damper (pressure balanced damper) is mainly used in each contact lane between the inlet and return air tunnels and the main inlet and return air lanes in coal mines. It is currently the Replacement products of the dampers used.
There are fully transparent and ordinary types.
Structural features of electric pneumatic pressureless damper
. The opening force is small, and the opening force has nothing to do with the wind pressure in the tunnel
. The damper can automatically close after a person or vehicle passes by
3. Two-way Sealed, with small air leakage
. Locking can be achieved between the two dampers
. The damper opens and closes smoothly without impact, safe and reliable
. When the mine car passes, the impact-rod type pressureless damper will The damper can be opened by the side of the mine car squeezing the damper striker, eliminating the need to open the door manually
. When the mine car is out of control, the damper striker can be opened by the side of the minecart squeezing the damper striker. Opening the damper will not cause damage to the damper
. The structure is simple and easy to maintain.
- 3/ Pressureless damper
Electric pressureless damper mechanical interlocking device
Install a B-type damper mechanical interlocking device between two dampers. When one damper opens, the other damper opens. cannot be opened, thereby realizing the interlocking of the two air doors.
Company name: Jining Dongda Co., Ltd.
Company type: Enterprise unit (manufacturer)
Registered capital: 10,000 RMB
Year of registration: year
Data certification:
Business scale: Manufacturer
Business scope:
Feeder,
Roller tank ear
, Catcher
, Arch breaker,
/>No wind pressure door,
Wet spray machine
Sales products: feeder,
roller tank ear
, catcher
, arch breaker,< br/>No wind pressure door,
Wet jet machine,
Sports car protection device
, Pressure air self-rescue device
, Skip bucket quantitative bucket loading equipment
Pneumatic parking Device
Pneumatic horizontal brake
Contact number:
Mobile phone number:
Contact
:
Contact person: Ma Rui
Dongda Machinery Pressureless Feng Men's Bad Joke
Wu Zhen Feng Men was going to attend A Mei's wedding. Because he was about to be late, the car drove very fast and did not stop at the red light. So he was stopped by the Justice Messenger, who was about to issue a ticket for the no-pressure damper. The Justice Messenger asked the no-pressure damper: How do you write "jumping" for running a red light? Wu Zhenmen thought he was going to be late, so he stopped people from coming down, and said impatiently: I can't write! After a while, the Justice Messenger gave the ticket to Wu Zhenmen, and Wu Zhenmen stuffed it into his wallet without even looking at it. A few days later, I went to pay the fine and showed the ticket to the lady at the counter. The lady looked at it for a long time and then said to me: You can go back! No-pressure damper Mo Ge said strangely: Aren't you going to be fined? The lady said: No need! Keep going on red light. There is no such traffic rule!