The Water Sump Cleaning Machine by Vacuum Suction

2012 ◽  
Vol 201-202 ◽  
pp. 785-788
Author(s):  
Xi Xi Zhang ◽  
Yu Jing Jia ◽  
Guang Zhen Cheng
Keyword(s):  
Atmospheric Pressure ◽  
Vacuum Pump ◽  
Labor Intensity ◽  
Vacuum Suction ◽  
Electrical Control ◽  
Suction Tube ◽  
Suction Pipe ◽  
Coal Mine Water ◽  
Cleaning Machine ◽  
Control Devices

This article describes a vacuum water sump cleaning machine which is used to clean up coal mine water sump. Cleaning machine is composed of mechanical structure and electrical control devices. The parts of machine are made up of Walk the flatbed, storage mud tank, vacuum pumps, suction pipe, mud tubes, swing devices, control valves, suction pipe and pressure tracheal. When working, under the function of vacuum pumping, cleaning machine pulls out the vacuum from storage mud tank through the vacuum air feeder. As the vacuum level in the tank is increasing, under the function of atmospheric pressure outside world, the mud flows into the reservoir along the suction tube. When storage mud tank is full, vacuum pump automatically shut down. Turning off the vacuum valve and opening the pressure valve, the slime in the tank under the function of compressed air comes into the mine car through the row mud tube. The layout of this cleaning machine is reasonable, what is more, it is flexible and convenient to operate, so that it reduces the labor intensity significantly and improves the work efficiency of the clearance.

Water Storage Bucket Chain Convey-Cleaning Machine for Cleaning Up Coal Mine Water Storage

2012 ◽  
Vol 164 ◽  
pp. 497-500
Author(s):  
Yu Jing Jia ◽  
Da Yu Zhang ◽  
Guang Zhen Cheng ◽  
Ying Jun Dai
Keyword(s):  
Control System ◽  
Water Content ◽  
Coal Mine ◽  
Water Storage ◽  
Vacuum Suction ◽  
Electrical Control ◽  
Mechanical Structure ◽  
Cleaning Machine ◽  
Coal Slime ◽  
Large Water

This Paper introduced a water storage bucket chain conveyor cleaning machine used in coal mine to clean up the underground water storage, which was mainly made up of the mechanical structure and electrical control system. The mechanical structure consists of walking flatbed, walking drives, chain bucket conveyor. Here focuses on the special structure, the working principle, the work process, the electrical control system, the working condition, the main features and the purpose of the chain bucket convey-cleaning machine. The machine structure was reasonable, the stress was even, the vibration was small, the movement was steady. It can not only adapted to a large water content of coal slime, but also adapted to dry coal slime. It overcomes the low efficiency of spiral roller clearance dealing with the large water content of the slime and the weakness when vacuum suction-type pneumatic conveyor is to clean the dry slime.

scholarly journals Massive cerebral swelling immediately after cranioplasty, a fatal and unpredictable complication: report of 4 cases

2015 ◽  
Vol 123 (5) ◽  
pp. 1188-1193 ◽  
Author(s):  
Gill E. Sviri
Keyword(s):  
Cerebral Edema ◽  
Negative Pressure ◽  
Atmospheric Pressure ◽  
Young Male ◽  
Suction System ◽  
Vacuum Suction ◽  
Medline Search ◽  
Decompressive Hemicraniectomy ◽  
Suction Drain ◽  
Male Patients

Cranioplasty after decompressive craniectomy (DC) is associated with increased morbidity, but the reported mortality rate is low. Recently, some authors have reported a rare unexplained complication of sudden death in association with massive cerebral edema immediately after cranioplasty. The author reports on 4 patients who underwent cranioplasty after DC between January 2005 and August 2010 at his department and died because of massive cerebral edema immediately after uneventful surgery and anesthesia. All 4 of the new cases reported involved young male patients who underwent decompressive hemicraniectomy after traumatic brain injury. They developed massive cerebral swelling immediately after uneventful cranioplasty (3 patients) or after removal of an epidural hematoma several hours after surgery (1 patient). All 4 patients had a large skull defect and significantly sunken craniotomy site, and all were treated with a closed vacuum suction system that was placed under the scalp and kept open at the end of the cranioplasty procedure. After surgery, the patients' pupils became fixed and dilated, and brain CT scans showed massive brain edema. Despite emergency DC, the patients did not recover, and all 4 died. A MEDLINE search showed 8 similar cases that were reported previously. Fatal cerebral swelling after uneventful cranioplasty is a distinct clinical entity, although it is unpredictable. It is postulated that a negative pressure difference from the elimination of atmospheric pressure that had been chronically applied on the injured sinking brain in combination with the negative pressure applied by the closed subgaleal suction drain may lead to a massive brain shift toward the cranioplasty site and initiate a fatal vasomotor reaction.

Solar Flash Desalination Under Hydrostatically Sustained Vacuum

2008 ◽  
Author(s):  
Mohammad Abutayeh ◽  
Yogi Goswami
Keyword(s):  
Hydrostatic Pressure ◽  
Fresh Water ◽  
Atmospheric Pressure ◽  
Water Surface ◽  
Saline Water ◽  
Ground Level ◽  
Vacuum Pump ◽  
Low Grade ◽  
Water Tank ◽  
Produce Water

Creating vacuum conditions above liquids increases their evaporation rates. This phenomenon can be integrated into a practical continuous desalination process by repeatedly flashing seawater in vacuumed chambers to produce water vapor that condenses afterwards producing fresh water. Gravity can be used to balance the hydrostatic pressure inside the flash chambers with the outdoor atmospheric pressure to maintain that vacuum, while low grade solar radiation can be used to add heat to seawater before flashing. The proposed desalination system consists of a saline water tank, a concentrated brine tank, and a fresh water tank placed on ground level plus an evaporator and a condenser located several meters above ground. The evaporator-condenser assembly, or flash chamber, is initially filled with saline water that later drops by gravity creating a vacuum above the water surface in the unit without a vacuum pump. The vacuum is maintained by the internal hydrostatic pressure balanced by the atmospheric pressure. The ground tanks are open to the atmosphere, while the flash chamber is insulated and sealed to retain both heat and vacuum.

Dual purpose pressure chamber with automatic safety devices for animal studies

1963 ◽  
Vol 18 (6) ◽  
pp. 1268-1269
Author(s):  
Howard F. Brubach ◽  
Paul D. Altland
Keyword(s):  
Atmospheric Pressure ◽  
Animal Studies ◽  
Low Pressure ◽  
Vacuum Pump ◽  
Small Animals ◽  
Equipment Failure ◽  
Simulated Altitude ◽  
Dual Purpose ◽  
Pressure Work ◽  
Safety Features

The construction and operation of a chamber with positive (up to 500 psi) or negative (simulated altitude to 50,000 ft) pressure with small animals is described. Special regulatory and safety features for low-pressure studies include a barometer connected electrically with a ventilation valve which automatically prevents a pressure drop (less than 100 ft simulated altitude) below a predetermined point, and a valve to prevent backflow of water from the vacuum pump in case of power or equipment failure. A means of controlling the temperature within 1 C is described. For low-pressure work, the chamber is also provided with clear Lucite doors, one of which opens automatically when the pressure is equalized. altitude; anoxia; aviation medicine; decompression; atmospheric pressure Submitted on March 26, 1963

Particle Transmission Through a Turbo Pump

1998 ◽  
Vol 41 (3) ◽  
pp. 31-34 ◽  
Author(s):  
Patrick Kinney ◽  
David Pui ◽  
Benjanin Liu
Keyword(s):  
Atmospheric Pressure ◽  
Vacuum Pump ◽  
Solid Particles ◽  
Vacuum System ◽  
Small Particles ◽  
Particle Detectors ◽  
Pass Through ◽  
Turbo Pump

Experiments were performed to determine if small particles are capable of passing through a turbo-molecular vacuum pump. A test aerosol was generated at atmospheric pressure and injected into the vacuum system upstream of the turbo pump. Particles were measured immediately upstream and downstream of the turbo pump using two laser-based vacuum particle detectors. Tests were performed with solid and liquid particles. Solid particles were found to pass through the pump, although the efficiency of transmission is not known. Liquid particles did not pass through the pump. These results indicate that vacuum particle counters employed downstream of turbo pumps may be sensitive to upstream particle levels.

Fabrication of Rheological Material of A356 Aluminum Alloy by Electromagnetic Stirring through Vacuum Pump

2008 ◽  
Vol 141-143 ◽  
pp. 731-736
Author(s):  
H.H. Kim ◽  
S.M. Lee ◽  
C.G. Kang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Atmospheric Pressure ◽  
Vacuum Pump ◽  
Electromagnetic Stirring ◽  
Vacuum Pressure ◽  
A356 Aluminum Alloy ◽  
Forging Process ◽  
A356 Aluminum

This study demonstrates fabricating rheological material by EMS system attached vacuum pump, in order to improve mechanical properties of rheoforged products by removing defects such as porosity and oxides arising from rheological forging process. The billet fabricated by EMS in vacuum pressure reduced formation of oxides and porosities of the inner material. The billet fabricated by EMS in vacuum pressure below 56 cm/Hg remarkably reduced porosities, comparing to the EMS in atmospheric pressure.

scholarly journals อุปกรณ์ช่วยสำหรับกิจวัตรประจำวันในผู้สูงอายุหลังกระดูกสะโพกหัก

2021 ◽  
Vol 14 (4) ◽  
pp. 74-80
Author(s):  
Panintorn Konggateyai ◽  
Vipavee Thanapatiwat ◽  
Piyapat Dajpratham ◽  
Wasana Anuja
Keyword(s):  
Hip Fracture ◽  
Activities Of Daily Living ◽  
Hip Fractures ◽  
Daily Living ◽  
The Elderly ◽  
Electrical Control ◽  
Self Confidence ◽  
Control Devices

Hip fractures are more common in the elderly.  After surgery,  the elderly have limitations in doing various activities, especially Activities of Daily Living (ADLs). Adaptive devices are used to assist in completing ADLs after surgery such as a long sponge stick used to prevent bending over while showering, dressing stick, shoehorn, etc. Besides, adaptive devices can increase self-confidence, safety and reduce anxiety among patients and caregivers. Nowadays, adaptive devices are easy to buy at an inexpensive price. Also, there are the innovations of adaptive devices that facilitate the patient to do the activities of daily living such as home electrical control devices, and the proactive innovation that reduces the incidence of hip fracture.

Design and Modal Analysis of Automatic Cleaning Wall Mechanism

2011 ◽  
Vol 328-330 ◽  
pp. 2059-2063
Author(s):  
Dong Wei Li ◽  
Sen Li ◽  
Xiao Min Chen
Keyword(s):  
Modal Analysis ◽  
Modern Society ◽  
Body Cavity ◽  
Structure Design ◽  
The Body ◽  
Human Beings ◽  
Washing Machine ◽  
Primary Research ◽  
Electrical Control ◽  
Cleaning Machine

As people’s living pace becoming faster and faster in modern society, a lot of machines which can substitute human beings, such as washing machine, dishwasher, have appeared. These machines can greatly save people the necessary labor times. The automatic cleaning wall mechanism which is studied in this paper belongs to a category of cleaning machine. It aims to clean the body cavity wall of a square. The primary research includes the mechanical structure design, the electrical control system design, and modal analysis for this mechanism in order to avoid resonance phenomena occurred between motors and bodies. At last, via experimental running, this mechanism can move forward according to our predetermined trajectory.

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