Abstract: A mechanical apparatus levelling mechanism has a base (10), an adjusting screw rod (20), an adjusting plate (30) and a support plate (40). The adjusting screw rod penetrates into the adjusting plate in an axial direction and is connected to the base. The adjusting plate is located on the base; the support plate is mounted at a top end of the adjusting screw rod and is located above the adjusting plate; and the adjusting plate rotates to drive the adjusting screw rod to rotate, such that the support plate is adjusted vertically. This simplifies the operation procedure, improving the assembly accuracy and improving the working efficiency. The method is simple to operate. These adjusting mechanisms are convenient to move and simple to adjust, are time-saving and labour-saving, and have adjustment dimensions that can be quantified. Moreover, the installation is simple, and the adjusting mechanisms themselves can be reused.

Abstract: The present disclosure relates to a field of soil-covered tank and includes a gas collecting and exhausting unit, a safety sealing unit and a closed-loop ventilation unit; a gas collecting pipe is located in a valve chamber and a channel, and the gas collecting pipe, a fan and an exhaust pipe are connected in sequence; a gas monitor of the safety sealing unit is used for monitoring concentration of combustible gases, a controller is connected to the gas monitor, a temperature sensor, a valve and a fan by conducting wires, and the controller set a warning temperature value and a warning gases concentration value and is capable of controlling actions of the valve and the fan; and the closed-loop ventilation unit is formed among a plurality of gas collecting and exhausting units.

Abstract: An integral side slope structure of a soil-covered tank, includes a tank body, connecting pieces, and reinforcing frameworks. The exterior of the tank body is completely covered with soil, and a side slope is formed after the tank body is covered with the soil; each connecting piece is composed of ribs which are in cross connection to each other; the connecting pieces are connected to the outer wall of the tank body and are laid inside the side slope in the horizontal direction; a single-layer connecting net is formed after a single layer of the connecting pieces is connected to the tank body; a plurality of layers of the connecting pieces are arranged at intervals in the vertical direction; the tank body and the side slope are connected by the multi-layer connecting net to form an integral structure; the reinforcing frameworks are arranged along the side slope.

Abstract: The present disclosure relates to a soil completely-covered tank system with a built-in valve chamber. The valve chamber includes a spherical tank body, a valve chamber, and a channel; an exterior of the spherical tank body is completely covered with soil, and the spherical tank body is supported by a stand column and is arranged on the ground, such that a gap is formed between the bottom of the spherical tank body and a ground foundation; the valve chamber is arranged between the spherical tank body and the ground foundation; a top opening of the valve chamber is connected to the bottom of the spherical tank body by means of a first connecting structure.

Abstract: A soil completely-covered structure includes a base layer, slope body filling soil and a buffering layer; the base layer is arranged around a vertical tank body and is made of a base material located on a ground floor, and a first filling gap is formed between the base layer and an outer wall of the vertical tank body; the slope body filling soil is arranged on the base layer, a second filling gap is formed between the side of the slope body filling soil and the outer wall of the vertical tank body, and a side slope surface is formed on the outer side of the slope body filling soil; and the buffering layer is formed in the first filling gap and the second filling gap, and the buffering material fills the first filling gap and the second filling gap to wrap the surface of the vertical tank body.

Abstract: An integral side slope structure of a soil-covered tank, includes a tank body, connecting pieces, and reinforcing frameworks. The exterior of the tank body is completely covered with soil, and a side slope is formed after the tank body is covered with the soil; each connecting piece is composed of ribs which are in cross connection to each other; the connecting pieces are connected to the outer wall of the tank body and are laid inside the side slope in the horizontal direction; a single-layer connecting net is formed after a single layer of the connecting pieces is connected to the tank body; a plurality of layers of the connecting pieces are arranged at intervals in the vertical direction; the tank body and the side slope are connected by the multi-layer connecting net to form an integral structure; the reinforcing frameworks are arranged along the side slope.

Abstract: The present disclosure relates to a field of soil-covered tank and includes a gas collecting and exhausting unit, a safety sealing unit and a closed-loop ventilation unit; a gas collecting pipe is located in a valve chamber and a channel, and the gas collecting pipe, a fan and an exhaust pipe are connected in sequence; a gas monitor of the safety sealing unit is used for monitoring concentration of combustible gases, a controller is connected to the gas monitor, a temperature sensor, a valve and a fan by conducting wires, and the controller set a warning temperature value and a warning gases concentration value and is capable of controlling actions of the valve and the fan; and the closed-loop ventilation unit is formed among a plurality of gas collecting and exhausting units.

Abstract: The present disclosure relates to a soil completely-covered tank system with a built-in valve chamber. The valve chamber includes a spherical tank body, a valve chamber, and a channel; an exterior of the spherical tank body is completely covered with soil, and the spherical tank body is supported by a stand column and is arranged on the ground, such that a gap is formed between the bottom of the spherical tank body and a ground foundation; the valve chamber is arranged between the spherical tank body and the ground foundation; a top opening of the valve chamber is connected to the bottom of the spherical tank body by means of a first connecting structure.

Abstract: A soil completely-covered structure includes a base layer, slope body filling soil and a buffering layer; the base layer is arranged around a vertical tank body and is made of a base material located on a ground floor, and a first filling gap is formed between the base layer and an outer wall of the vertical tank body; the slope body filling soil is arranged on the base layer, a second filling gap is formed between the side of the slope body filling soil and the outer wall of the vertical tank body, and a side slope surface is formed on the outer side of the slope body filling soil; and the buffering layer is formed in the first filling gap and the second filling gap, and the buffering material fills the first filling gap and the second filling gap to wrap the surface of the vertical tank body.

Abstract: A movable lifting device has a lifting and fixing device (10) and a moving device (20). One end of the lifting and fixing device is connected to the moving device, and the other end thereof is connected to a cargo to be shifted (30). The free rotation of the lifting and fixing device converts rotary motion into linear motion for lifting the cargo to-be-shifted. The movable lifting device has a simple and flexible structure, is easy to operate, and combines the functions of shifting and lifting. It can be operated anytime and anywhere, and is suitable for a wide range of applications. The movable lifting device reduces labor intensity, saves manpower and material resources, is cheaper to build, and easy to operate.

Abstract: Provided are a waste gas processing device, a vacuum coating system, and an operation method of the waste gas processing device. The waste gas processing device is configured to remove and recover arsenic in the waste gas, and includes a condensation portion and a scraping portion. The condensation portion is provided with a condensation cavity, and an air inlet, an air outlet and a discharge port communicated with the condensation cavity. A partial surface of the scraping portion abutting against an inner wall surface of the condensation cavity. The present disclosure solves a problem in a conventional art that an economic cost of a waste gas processing device is too high during the removal and recovery of arsenic in waste gas.

Abstract: The present disclosure relates to the technical field of semiconductors, and more particularly to a mass flow controller. The mass flow controller includes an inlet pipeline, an outlet pipeline and a control component. There are multiple inlet pipelines and/or outlet pipelines. One end of each inlet pipeline is an air inlet, and the other end of each inlet pipeline is communicated with each outlet pipeline. Each inlet pipeline is provided with a potential monitoring element. The control component is connected to each potential monitoring element, and the control component controls the gas flow of each inlet pipeline and each outlet pipeline.

Abstract: Embodiments of the present disclosure relate to a technical field of vacuum gauges, and more particularly to a vacuum measuring device. The vacuum measuring device includes a pre-stage chamber and a vacuum gauge provided in sequence along a pressure conduction direction. The pre-stage chamber is communicated with the vacuum gauge. A pre-stage diaphragm is provided in the pre-stage chamber. A measurement diaphragm is provided in the vacuum gauge. A pressure conduction chamber is formed between the pre-stage diaphragm and the measurement diaphragm. The pressure conduction chamber is filled with a pressure conduction fluid.

Abstract: A magnesium secondary battery includes a positive electrode, a negative electrode, a separator membrane and an electrolytic solution. The electrolytic solution includes nitrogen-containing heterocyclic magnesium halide and an organic ether solvent.

Abstract: A magnesium secondary battery includes a positive electrode, a negative electrode, a separator membrane and an electrolytic solution. The electrolytic solution includes nitrogen-containing heterocyclic magnesium halide and an organic ether solvent.