10results about How to "Avoid water damage" patented technology

The utility model discloses a motor protection device for an electric vehicle, which comprises a motor end cover, a flywheel, an oil seal and a motor shaft, and is characterized in that the flywheel is coaxially and fixedly connected to the outer side of the motor end cover, the motor shaft is arranged in the center of the motor end cover in a penetrating manner through a bearing, the oil seal is arranged between the flywheel and the motor shaft, and the flywheel is fixedly connected to the flywheel. A dustproof cover is further arranged on the outer side of the flywheel, the dustproof cover is arranged on the motor shaft in a penetrating mode and covers the oil seal, two layers of annular check rings are arranged on the inner side of the dustproof cover and used for preventing dust and water, and the outer side of the dustproof cover is fixed through a bottom fork plate and prevented from falling off from the motor shaft. The dustproof cover completely wraps the oil seal, the oil seal is prevented from being directly exposed outside, the two layers of annular check rings are arranged from outside to inside, dust and splashed water can be effectively prevented from entering the oil seal, the oil seal is prevented from aging, and the service life is prolonged.

This utility model relates to the field of urea injectors, specifically disclosing a liquid inlet cap sealing structure for a urea injection assembly, including: a water jacket assembly, a valve body, a liquid inlet cap, and a sealing part. The valve body is composed of a wiring part, a coil part, and a liquid inlet pipe. The sealing part can be either a sealant with an integral filling structure or a component consisting of a first sealing ring and a second sealing ring for sealing. After sealing, it can prevent cooling water or external immersion water from seeping into the gaps between the wiring part and the liquid inlet pipe, as well as the gaps between the wiring part and the coil part, thus preventing water from entering and damaging the coil part and wiring part, thereby extending the service life of the valve body and reducing the failure rate.

The invention discloses a limestone aquifer fracture network construction method based on a three-dimensional imaging technology and application, and relates to the field of mine water disaster prevention and control. The method comprises the steps that firstly, holes are drilled in a coal seam top plate and a coal seam bottom plate, three-dimensional imaging equipment is placed in a drilled hole for data collection, and rock stratum crack information in the drilled hole is obtained and comprises the crack number, the crack trend, the crack width, the crack tendency, the crack length and the like; data acquisition of other drill holes is completed by using the same method; then optimizing the two-dimensional image through a computer, and carrying out statistical analysis on fracture information obtained by all drilled holes to obtain a fracture network of the whole mine; and finally, importing fracture information identified by the fracture network of the whole mine into three-dimensional modeling software, and constructing an aquifer fracture network model. According to the method, the fracture network in the limestone aquifer of the mine is constructed, so that the fractures are grouted, and the mine water disaster is prevented.

The invention discloses coal mine water prevention and control equipment which comprises a sludge pump and a transition cylinder, a suction port of the sludge pump is communicated with a sludge discharge pipe, and one end of the sludge discharge pipe is communicated with the transition cylinder. When the liquid level sensor detects that the liquid level of the in-mine sedimentation tank exceeds a preset value of the PLC, the PLC starts the sludge pump to work to promote the transition cylinder communicated with the sludge discharge pipe to extract upper-layer sewage in the in-mine sedimentation tank through the suction nozzle at the bottom of the transition cylinder, so that the liquid level of the coal mine sewage in the sedimentation tank reaches a dynamic balance state; water damage caused by continuous rising of the liquid level of the sedimentation tank is avoided, in the desilting stage of the sedimentation tank, the motor of the transition barrel is started to work, the motor is promoted to drive the multiple crushing cutter sets of the shaft rod to rotate, and the crushing cutter sets with the strip-shaped blades and the convex columns are made to crush sludge cakes or stone blocks entering the transition barrel.

The utility model belongs to the technical field of glassware dull polish, and particularly relates to glassware dull polish equipment which comprises a sand blasting machine and two fans, and further comprises a working table, a fixing plate is fixedly installed at the top of the working table, the sand blasting machine is fixedly installed in the fixing plate, a protective shell is installed at the top of the working table in an inserted mode, and a rotating door is rotatably installed in the protective shell. A fixing plate is fixedly installed on the base, a connecting plate is fixedly installed on one side of the fixing plate, an air inlet pipe is fixedly installed on one side of the connecting plate, and the two fans are fixedly installed on the two sides of the air inlet pipe respectively. According to the device, water stains and mildewing caused by the fact that water remains on the glass cups are avoided, the glass cups can rotate automatically, and therefore the sand blasting machine can conduct even sand blasting treatment on the glass cups, the sand blasting quality is improved, meanwhile, water on the glass cups can be evenly air-dried, and the air drying efficiency is improved.

The invention discloses a marine ammonia fuel low-speed machine cabin safety protection system and an ammonia gas leakage grading response method. The system comprises a non-closed local protection cover surrounding a main engine cylinder cover area, and an air supply gap is formed between the non-closed local protection cover and a main engine body; the directional ventilation and purification subsystem is provided with an ammonia gas leakage monitoring sensor, a negative pressure suction unit and an ammonia gas spraying treatment unit which are positioned at the top of the protective cover, and can be automatically started when leakage is monitored, so that directional pumping, discharging, washing and purifying of ammonia gas are realized; and a nozzle of the independent host emergency spraying subsystem is mounted on the protective cover frame, is manually controlled by a person and is used for providing emergency spraying protection when the person is not evacuated. By means of a grading response mechanism combining automatic ventilation purification and manual emergency spraying, rapid control over ammonia gas leakage and personnel safety protection are achieved, and the system has the advantages of being rapid in response, efficient in control and emission, safe and reliable.

The container comprises a container body, at least two top covers and a sealing structure, the container body comprises a top plate, a feeding opening is formed in the top plate, the top covers are arranged on the top plate, the top covers are closed to the feeding opening in an openable mode, the top covers are arranged in the first direction, and the sealing structure is arranged on the top covers; the sealing structure comprises a transverse part arranged in the first direction, a longitudinal part arranged in the second direction and a connecting box arranged between the transverse part and the longitudinal part, the transverse part is in sealing fit with the top plate, and in the adjacent top covers, the longitudinal part of one top cover is in sealing fit with the other top cover. Sealing lap joint between the top covers and the top plate is achieved through the transverse parts, sealing lap joint between the adjacent top covers is achieved through the longitudinal parts and the connecting boxes, a sealing waterproof area is formed, the sealing waterproof structure is simplified, water can be rapidly drained, rainwater is prevented from flowing into the box body along the joints of the adjacent top covers, goods are prevented from being affected with damp or damaged by water, and the service life of the box body is prolonged. And the sealing performance of the top cover is ensured.

The invention discloses self-priming pump equipment, and relates to the field of self-priming pumps, the self-priming pump equipment comprises a driving motor and a pump body, the driving motor is provided with a motor shaft, the motor shaft is connected in the pump body, the bottom side of the driving motor and the bottom side of the pump body are provided with a mounting seat, the pump body is connected with a water suction pipe and a water outlet pipe, and the water suction pipe is connected with the water outlet pipe. A water suction box is connected to the water suction pipe, two water inlet pipes are connected to the bottom side of the water suction box, and a filter cover is installed on the bottom sides of the water inlet pipes; the device further comprises an automatic switching mechanism. It needs to be explained that in the embodiment of the invention, when the pump body is blocked, the switching cover moves to close one water inlet and open the other water inlet, continuous water inflow is guaranteed, if the two water inlet pipes are blocked, the water inlet hole is exposed, then water enters the water suction box through the water inlet hole, and emergency water supply is conducted on the water suction box; the safety of the water suction pump is guaranteed, and meanwhile time is gained for maintenance of the water suction pump.

The invention belongs to the technical field of asphalt warm mixing agents, and particularly relates to a preparation method of an asphalt warm mixing agent for acidic aggregate. In order to solve the problem that in the prior art, a pavement paved by mixing acidic aggregate and asphalt is prone to water damage, the invention provides the preparation method of the asphalt warm mixing agent for the acidic aggregate, the preparation method comprises the following steps: heating and melting Fischer-Tropsch wax, carrying out wiped-film evaporation through a wiped-film evaporator, and condensing to obtain an intermediate product 1; heating and melting the intermediate product 1, performing reduced pressure distillation at different temperatures for multiple times, and collecting components to obtain an intermediate product 2; performing catalytic hydrogenation reaction on the intermediate product 2 to obtain an intermediate product 3; and mixing a coupling agent with the intermediate product 3, and uniformly stirring to obtain the asphalt warm mixing agent. The asphalt warm mixing agent prepared by the invention can effectively improve the interface adhesion performance of the matrix asphalt and the acidic aggregate, and avoids the problem of water damage caused by long-time use of a pavement.