47results about How to "Slow discharge" patented technology

The ink composition 60 is produced in such a way that the difference between dynamic surface tension(mN / m) and static surface tension(mN / m) determined at 24-26[deg.]C by maximum foam pressure method is 0-7(mN / m). The printing method comprises the following process. The ink composition 60 is reserved in the ink tank 50 of the ink head 1 and fed from the ink tank 50 into an ink chamber 40 with a jet nozzle 31, voltage is applied on a diaphragm section 12 formed of a piezoelectric material and pressure is applied on the ink composition 60 filled in the ink chamber 40 through the diaphragm section 12 to jet droplets of the ink composition 60 via the jet nozzle 31, and the droplets are put on a printing material to print images on the printing material.

An air conditioner includes a housing having a first inlet port and a second inlet port, a first discharge port, a second discharge port, the air discharged through the second discharge port is mixed with the air discharged through the first discharge port, and having a plurality of discharge holes to cause the air discharged from the first discharge port to be discharged more slowly than air discharged from the second discharge port, a heat exchanger configured to heat-exchange the air entered through the first inlet port, a first fan arranged to draw the air into the housing through the first inlet port, and to discharge the air from the housing through the first discharge port, and a second fan arranged to draw the air into the housing through the second inlet port, and to discharge the air from the housing through the second discharge port.

The invention discloses an LNG-CNG dual fuel power gas supply system. The LNG-CNG dual fuel power gas supply system comprises an LNG fuel power gas supply system, a CNG fuel power gas supply system, an integrated device and a control device. The integrated device is arranged among the LNG fuel power gas supply system, the CNG fuel power gas supply system and an engine. Through the integrated device, the LNG fuel power gas supply system and the CNG fuel power gas supply system can both be communicated with the engine. The control device controls one of the LNG fuel power gas supply system and the CNG fuel power gas supply system to supply gas to the integrated device. The LNG-CNG dual fuel power gas supply system has the beneficial effects of being high in cruising power, capable of being filled with gas conveniently, easy to operate, high in work efficiency, high in economical efficiency, high in safety and small in occupied space.

The invention provides a high-safety device capable of achieving automatic inflation. The high-safety device capable of achieving the automatic inflation comprises an automatic inflating mechanism anda tire pressure monitoring mechanism, wherein the automatic inflating mechanism comprises a gas storage tank, a gas conveying pipe, a rotary connecting device and a tire nozzle; the gas conveying pipe and the gas storage tank are mutually connected; the rotary connecting device is fixed to the outer side of a wheel hub; the gas conveying pipe is connected with the tire nozzle through a connectinghole formed in the end part thereof; the gas conveying pipe is formed by connecting a plurality of gas conveying branch pipes through pipe connectors; the tire pressure monitoring mechanism comprisesa shell; an adjusting cavity is formed in the shell; an adjusting mechanism is arranged inside the adjusting cavity. The high-safety device capable of achieving the automatic inflation is good in safety performance and long in service life.

The invention provides a power supply device of a liquid crystal display device. The device comprises a waveform generation unit, a comparison unit, a driving control unit, and a display device control unit which are electrically connected in sequence. The output end of the display device control unit is connected with the liquid crystal panel unit. The comparison unit comprises a comparator, a transistor, a first resistor, a capacitor, a second resistor and a third resistor, the cathode end of the comparator is connected with the waveform generation unit, and the output end of the comparatoris connected with the drive control unit. The anode end, the first resistor, the capacitor and the transistor emitter are connected to the point a, and the second resistor and the third resistor are connected with the transistor base. In the power-on and power-down processes of the system, stable and reliable operation of the system is realized by enabling the voltage of the anode end of the comparator to be lower than the voltage of the cathode end, the working state of a subsequent unit is effectively ensured, and damage to the system caused by an abnormal state is reduced. By setting the capacitor, the duty ratio of the control signal is slowly increased to a fixed value, the performance of the system is improved, and the stability of the system is improved.

An object of the present invention is to provide an ink composition capable of obtaining high-quality recorded images with excellent discharge stability when using an inkjet recording method, a recording method using the composition, a recorded image, an ink set, and an inkjet head. . The difference between the dynamic surface tension (mN / m) and the static surface tension (mN / m) of the ink composition (60) measured by the maximum bubble pressure method at a temperature of 24 to 26°C is 0 to 7 (mN / m). The ink composition is stored in the inkjet tank (50) of the inkjet head (1), and the ink composition is supplied from the ink tank (50) to the ink cartridge (40) having the discharge port (31), and a voltage is applied to the inkjet tank (50) of the inkjet head (1). On the partition (12) made of piezoelectric material, the partition (12) applies pressure to the ink composition (60) stored in the ink tank (40), so that the ink composition (60) is discharged from the discharge port (31). 60) Liquid droplets attached to the recording material to record images.

The invention discloses air purification equipment facilitating laboratory air sterilization. The air purification equipment comprises a box body, a filter screen, an infrared disinfection device, anequipment outlet and a water pump, wherein an air blower is arranged at the front end of the box body, and the filter screen is located on the rear side of the air blower; the right end of an equipment inlet is connected with a water inlet, and the equipment outlet is formed in the rear end of a purification pipeline; the infrared disinfection device is located on the inner side of the box body, and the water pump is located on the right side of the box body; a supporting platform is arranged on the lower side of the water pump, the lower end of the water pump is connected with a sewer pipe, and a disinfection water tank is arranged on the left side of the box body; the lower end of the disinfection water tank is also connected with the sewer pipe. By means of the air purification equipment facilitating laboratory air sterilization, large particles such as dust in the air can be conveniently filtered away, the purification equipment is prevented from being blocked, the air in a laboratory can be fully sterilized and disinfected, the environment is prevented from being polluted, meanwhile, the exhausted air is also prevented from being dried, and the air is convenient to refresh.

The invention discloses an ice bank refrigerating cabinet of a refrigeration and purification integrated machine. The ice bank refrigerating cabinet comprises a cabinet body, wherein a top cover is arranged at the top of the cabinet body; the cabinet body and the top cover both consist of an inner shell and an outer shell; a thermal insulating layer is arranged between the inner shell and the outer shell; a ventilating pipeline and a condensation pipe are arranged in the cabinet body; two ends of the ventilating pipeline are communicated with the outside of the cabinet body; a heat exchange fin is arranged on the ventilating pipeline; an external constant pressure pipeline is arranged on the outer side wall of the cabinet body; one end of the external constant pressure pipeline is communicated with the upper part of the cabinet body, and the other end of the external constant pressure pipeline is communicated with the lower part of the cabinet body; a pull rod is arranged inside the cabinet body along the width direction; and two ends of the pull rod are connected with the inner wall of the cabinet body. The ice-bank refrigerating cabinet of the refrigeration and purification integrated machine has the advantages that the resistance of air passing through a ventilating coil pipe can be reduced, the space occupied by the ventilating pipeline in a life-saving capsule can be decreased, the phase transformation stress subjected to an ice-bank refrigerating cabinet shell can be eliminated, the bearing strength of the cabinet body 1 is high, the condensation water in the ventilating pipeline can be slowly drained, the condensation water of the outer wall of the ice-bank refrigerating cabinet shell can be collected, etc.

The invention discloses a sewage well lid capable of changing hole diameter according to the rainwater flow, and relates to the technical field of well lids. The sewage well lid comprises a foundation; the middle of the foundation is movably connected with a well lid body, the middle of the well lid body is provided with a water storage tank, the middle of the water storage tank is movably connected with a floating block, a dielectric plate is fixedly connected to the middle of the floating block, a water leakage hole penetrating through and extending to the bottom of the well lid body is formed in the bottom of the water storage tank, and electrode plates are fixedly connected to the two sides, close to the water storage tank, of the inner wall of the well lid body. According to the sewage well lid capable of changing the hole diameter according to the rainwater flow, through cooperative use of an electromagnet and a magnetic block, when accumulated water is increased, the magnetism of the electromagnet is gradually increased, due to the fact that the magnetism of the inner side of the magnetic block is opposite to the magnetism of the outer side of the electromagnet, the magneticblock can drive a blocking block to move inwards under the magnetic attraction effect of the electromagnet; therefore, the diameter of a drainage hole is changed along with the accumulated water amount, the drainage amount is effectively changed, and the accumulated water problem is effectively solved.

The invention discloses a sintering process of products obtained by a hard alloy paraffin production process and belongs to the technical field of sintering powder metallurgy hard alloy materials. The sintering process of the products obtained by the hard alloy paraffin production process comprises the steps of negative-pressure paraffin removal, vacuum sintering, partial-pressure sintering, rapid cooling and discharging, wherein during the paraffin removal process, the peak curve of the paraffin discharged from the alloy products is completely followed, different temperature-raising slopes are adopted in each stage so as to ensure that the paraffin gas is sequentially and slowly discharged from the alloy products at a constant speed. Hard alloy products prepared by the process disclosed by the invention cannot have problems of cracks, peeling, deformation, carburizing, decarbonization and the like caused by the sintering process; the recovery rate of the paraffin gas discharged from the products is high and can reach above 97%, the pollution to a hearth and a vacuum pump system is reduced and the service life of the device is prolonged; the process time is relatively short, the production benefits are improved, the energy source is saved, the cost is decreased and the market competitiveness is enhanced.

The invention discloses an automobile tire pressure safety monitoring mechanism. The automobile tire pressure safety monitoring mechanism comprises a shell; an adjusting chamber is formed in the shell; an air inlet passage and an air outlet passage are formed in the shell; an adjusting mechanism is arranged in the adjusting chamber; the adjusting mechanism comprises a piston plate, a first adjusting plate and a second adjusting plate; the piston plate can be movably arranged in the adjusting chamber; a plurality of vent holes are formed in the piston plate; a first inserting block is arrangedat one end of the piston plate; a second inserting block is arranged at the other end of the piston plate; a first plugging block and a second plugging block are arranged at the end part of the firstinserting block; the first plugging block fits a third air inlet passage; the second plugging block penetrates through a second air inlet passage to fit a first air inlet passage; a third plugging block is arranged at the terminal of the second inserting block; and a spring is arranged between the piston plate and the second adjusting plate. According to the automobile tire pressure safety monitoring mechanism, the pressure in a tire can be monitored in real time and the tire can be deflated under a situation that the pressure is too high; therefore, the safety performance is greatly improved.

The invention belongs to the field of wastewater treatment devices, and particularly discloses a building construction wastewater treatment device. The device comprises a deposition bottle communicated with a long pipe, wherein a division plate dividing the interior of the long pipe into a liquid inlet cavity and a liquid outlet cavity is fixedly connected into the long pipe; and a liquid outlet pipe communicated with the liquid outlet cavity is fixed on a side wall of the long pipe. The device further comprises a sludge collection tank and an elastic buffer device capable of allowing the sludge collection tank to descend; the deposition bottle is located over the sludge collection tank; and leakage holes are formed in the bottom of the deposition bottle. A sealing plate is connected withthe bottom of the deposition bottle in a sliding manner; through holes matched with the leakage holes are formed in the sealing plates; one end of the sealing plate is wedge-shaped; and a wedge-shapedblock matched with the end part of the sealing plate is fixedly connected with an inner wall of a liquid collection tank. The device solves the problem of high possibility of pipeline blocking sincewastewater contains much silt in a wastewater treatment process in the prior art.

The invention discloses energy-saving and environment-friendly chemical water pollution treatment equipment which structurally comprises a treatment bin, a control box, a water outlet and a motor, thecontrol box is fixedly embedded in the left end face of the outer side of the treatment bin and located over the water outlet, the water outlet is fixedly embedded in the lower end face of the outerside of the treatment bin, and the motor is located below the right side of the control box; when sewage flows into a sedimentation mechanism, the sewage impacts a leakage block, so that heavy metal debris in the sewage flows into the upper part of a filter screen in the leakage block to form accumulation, and water flows downwards along the filter screen to flow into the oxidation bin again, whenthe heavy metal debris impact the upper end face of the filter screen continually, a filling ring expands outwards along with the pressure to slowly discharge the heavy metal debris.

The invention relates to the technical field of water conservancy projects, and discloses a hydraulic slow-closing check valve for a water conservancy project. The hydraulic slow-closing check valve comprises a valve body, the middle part of the inner cavity of the valve body is fixedly connected with a limiting seat, the inner cavity of the valve body is movably connected with a valve clack positioned at one end of the limiting seat in a sleeved mode, and the right end of the inner cavity of the valve body is fixedly connected with a first fixed seat. According to the hydraulic slow-closing check valve, by additionally arranging a slow opening mechanism, when liquid needs to be conveyed, the liquid is continuously conveyed into a pipeline through a water pump, flows to the left side of the check valve and is continuously accumulated at the left side of the check valve, so that the liquid pressure reaches the degree that the valve clack can be pushed open, after the valve clack is pushed for a certain distance under the action of the liquid pressure, liquid flows through a gap of the valve clack, meanwhile, subsequent liquid impacts a rotating wheel to enable the rotating wheel torotate slowly, the valve clack compresses a spring under the action of a threaded rod and moves towards a first fixing seat, and therefore the check valve is opened slowly under the action of the threaded rod and liquid pressure.

A continuous running power generation device of an electric vehicle comprises a vehicle driving motor and further comprises a power generator, a first energy storage device, a second energy storage device, a both-way silicon controlled rectifier potential relay switch, a power transmission facility, a charger and an inverter. The vehicle driving motor is connected with the power generator through the power transmission facility. The power generator is connected with the first energy storage device and the second energy storage device through the charger. The first energy storage device and the second energy storage device are connected with the both-way silicon controlled rectifier potential relay switch. The both-way silicon controlled rectifier potential relay switch is connected with the vehicle driving motor through the inverter. The continuous running power generation device can be applied to urban trams, electric vehicles running on an expressway and other electric vehicles which move on the ground and are driven by electric energy, and can also be applied to small ships in the ocean. The continuous running power generation device has the main beneficial effects of not discharging dirt and being friendly to the environment.

The invention disclose a multifunctional steamer which comprises a sealed and openable steamer main body, a heating module and a steamer bracket, wherein water grooves are formed in the bottom of the steamer main body; the heating module is mounted at the bottoms of the water grooves; the water grooves are communicated with the outer part of the steamer main body through a communicating pipe; the steamer bracket comprises a supporting pipe and a tray arranged on the supporting pipe; the lower end of the supporting pipe is opened and the upper end of the supporting pipe is sealed; an opening is formed in the side surface at the upper end of the supporting pipe; the lower end of the supporting pipe is connected onto the communicating pipe in a sleeving manner; in the working state, a water sealing is formed at the lower end of the supporting pipe; holes are formed in the periphery, away from the supporting pipe, of the tray; the invention further discloses a steamer bracket which is mounted in the steamer main body; the steamer bracket comprises the supporting pipe and the tray arranged on the supporting pipe; the lower end of the supporting pipe is opened and the upper end of the supporting pipe is sealed; the opening is formed in the side surface at the upper end of the supporting pipe; the holes are formed in the periphery, away from the supporting pipe, of the tray. The steamer is compact and simple in structure, diverse in functions and higher in heat exchange efficiency and the energy conservation and environmental protection are realized when the multifunctional steamer is used for cooking food.

The invention discloses an inorganic powdery raw material high-efficiency ton bag unpacking device convenient to adjust. The inorganic powdery raw material high-efficiency ton bag unpacking device comprises an unpacking bracket, a mounting top frame, an unpacking table and a ton bag. The surface of the unpacking bracket is fixedly connected with the mounting top frame, the surface of the unpackingtable is fixedly connected with two sets of mounting brackets, the surfaces of the mounting brackets are fixedly connected with a plurality of sets of pneumatic telescopic rods, the inner wall of theunpacking sleeve is fixedly connected with an outer pressing sleeve, a plurality of sets of inner pressing sleeves are clamped into the outer pressing sleeve, the surfaces of the multiple sets of theinner pressing sleeves are each fixedly provided with two sets of elastic clamping blocks, a buffer pipe is fixedly connected to the interior of a material through base, and a rotating impeller and abuffer plate are fixed into the material through base; by means of the rotating impeller, raw materials can be more even; through the effect of the buffer plate, the raw materials can be slowly discharged, the material through base and a material through pedestal are connected, the raw materials enter the interior of the buffer pipe to be further buffered, dust is reduced, the discharging qualityis ensured, and the inorganic powdery raw material high-efficiency ton bag unpacking device is suitable for popularization.

The invention discloses an SRAM (static random access memory) bit line leakage current compensation circuit as an auxiliary circuit of an SRAM circuit. The SRAM bit line leakage current compensation circuit comprises two completely same compensation circuits which are utilized together for auxiliary compensation of the SRAM main circuit, wherein each compensation circuit is provided with two input / output ends and a control signal CON which is used for controlling the operation pattern of the bit line leakage current compensation circuit; each current compensation circuit comprises 5 PMOS (P-channel metal oxide semiconductor) and 6 NMOS (N-channel metal oxide semiconductor); through detecting the variation conditions of the electric potential variation ratio on two bit lines in the main circuit under the normal operation state, the compensation circuit automatically enables signals of a bit line at one end, which discharges slowly, to discharge more slowly, and enables the signals of a bit line at one end, which discharges quickly, to discharge more quickly, thus the influences to the main circuit by greater leakage current on the SRAM bit line are eliminated, and help is provided for the correct recognition of the subsequent circuit signals.

The invention provides a device for improving the stable operation of liquid crystal equipment, which comprises a waveform generation unit, a comparison unit, a driving control unit, an overcurrent and undervoltage protection unit and a liquid crystal driving unit which are electrically connected in sequence, a level signal output end of the liquid crystal driving unit is connected with a liquid crystal panel unit; the output end of the over-current and under-voltage protection unit is further connected with the input end of the drive control unit. The over-current and under-voltage protectionunit comprises a fifth resistor, an operational amplifier, a comparator, a sixth resistor, an NPN type field effect transistor, a first diode and a seventh resistor. In the power-on and power-off processes of the system, the stable and reliable operation of the system can be realized by enabling the anode end voltage of the comparator to be lower than the cathode end voltage, the working state ofsubsequent units is effectively ensured, and the damage of an abnormal state to the system is reduced; safety and stability of the working state of an over-current and under-voltage state system arerealized by adopting a self-adaptive adjustment and control mode, so that the stability of the liquid crystal display driving equipment is improved.

The invention discloses a concrete mixing device. The device comprises a mixing barrel and further a top cover, wherein the top cover is a circular lid fixed on the top of the mixing barrel; a feedingbarrel is fixed on the upper side of the top cover and is connected to the inner cavity of the mixing barrel; a discharge frame is fixed at the bottom of the inner cavity of the mixing barrel; a mounting frame is pivotally connected in the mixing barrel in the axial direction; a first stirring member is spinned to the upper part of the mounting frame by a thread; a second stirring member is spinned to the lower part of the mounting frame by a thread; an unloading frame is fixed on the outer wall of the mixing barrel and communicates with the inner cavity of the mixing barrel; the first stirring member includes a rectangular first frame, both ends of the first frame are provided with stirring cavity bodies by means of running through, and a mixing block spinned into the mixing cavity witha thread is further included; and a first installation pipe is spinned to the middle of the first frame by a thread. The concrete mixing device can re-mix the precipitated concrete materials to realize the full mixing of the concrete materials.

The invention provides a pulse power supply generation circuit and an electrical dust catcher, and relates to the technical field of pulse power supplies. The circuit comprises a power supply module,a pulse generation module and a load, the pulse generation module and the power supply module are connected in series, the load is connected in parallel with two ends of the pulse generation module, the pulse generation module comprises a capacitance charging resistor, an energy storage capacitor, a transmission line charging resistor, a switch, a pulse signal generator and a high-voltage connector, the capacitance charging resistor, the transmission line charging resistor and the high-voltage connector are connected in series, one end of the energy storage capacitor is connected between the capacitance charging resistor and the transmission line charging resistor, the other end of the energy storage capacitor is connected with ground, one end of the switch is connected between the transmission line charging resistor and the high-voltage connector, the other end of the switch is connected with the ground, and the pulse signal generator is electrically connected with the switch. By thepulse power supply generation circuit, frequency-adjustable pulse strings can be generated, meanwhile, a single pulse frequency in each pulse string is also adjustable, so that the circuit is suitablefor various application occasions.

The invention discloses a sintering process of products obtained by a hard alloy paraffin production process and belongs to the technical field of sintering powder metallurgy hard alloy materials. The sintering process of the products obtained by the hard alloy paraffin production process comprises the steps of negative-pressure paraffin removal, vacuum sintering, partial-pressure sintering, rapid cooling and discharging, wherein during the paraffin removal process, the peak curve of the paraffin discharged from the alloy products is completely followed, different temperature-raising slopes are adopted in each stage so as to ensure that the paraffin gas is sequentially and slowly discharged from the alloy products at a constant speed. Hard alloy products prepared by the process disclosed by the invention cannot have problems of cracks, peeling, deformation, carburizing, decarbonization and the like caused by the sintering process; the recovery rate of the paraffin gas discharged from the products is high and can reach above 97%, the pollution to a hearth and a vacuum pump system is reduced and the service life of the device is prolonged; the process time is relatively short, the production benefits are improved, the energy source is saved, the cost is decreased and the market competitiveness is enhanced.

The invention provides a disinfectant sprinkling device. The disinfectant sprinkling device comprises a vehicle chassis, a box body, a push handle, an atomizer and an exhaust pipe; castors are arranged at the bottom of the vehicle chassis; the box body comprises a stirring rod, a pressure pump, a spraying pipe and a spraying head, the stirring rod and the pressure pump are arranged in the box body, one end of the spraying pipe is connected to the spraying head, the other end of the spraying pipe is connected to the pressure pump, and the spraying head is arranged at one end of the box body; one end of the pushing handle is arranged on the vehicle chassis and is far away from one end of the spraying head; and the atomizer is arranged in the box body, and smoke gas generated by atomization can be discharged out through the exhaust pipe. The disinfectant sprinkling device is high in sprinkling efficiency and large in sprinkling area, and meanwhile, a large quantity of disinfectants can bestored.

The present invention relates to a bus communication receiving end decoding circuit. The bus communication receiving end decoding circuit comprises: a first bus voltage division module configured to input voltage division voltage generated after the bus voltage reduces the voltage into the positive input end of a first comparator; a threshold-voltage generation module configured to generate a threshold voltage according to the bus voltage, and inputting the threshold voltage to the reverse input end of the first comparator; the first comparator configured to allow a host to be standby or emit an instruction according to the size of the threshold voltage and the size of the voltage division voltage. Through adoption of the structure, the bus communication receiving end decoding circuit is able to eliminate the difference caused by different lengths of connection lines of slave computers being nearest to the host and being farthest to the host, and allow each slave computer to employ the same set values, so that the problem is solved that different slave computers use different set values.

The invention relates to the field of preserved food processing and air drying, in particular to an upper and bottom layer flow guide mechanism of an air drying line for preserved food processing. The technical scheme aims to solve the technical problems that oil drips in the manufacturing and air drying process of preserved products, and the oil cannot be quickly guided and discharged in the manufacturing and using process of an existing air drying machine; the oil liquid is solidified, accumulated and difficult to clean. Comprising a rotating control device, a supporting frame, supporting legs, a collecting frame, a flow guiding device, a rotating connecting clamping shaft, a taking and placing opening and a rotating air drying cylinder, the supporting legs are symmetrically and fixedly connected to the two sides of the supporting frame, the rotating control device is fixedly connected to the upper portion of one end of the supporting frame, and the rotating air drying cylinder is fixedly connected to the front end of the rotating control device; the taking and placing opening is formed in one end of the rotary air drying cylinder in a penetrating mode, and the flow guiding device is fixedly installed in the middle of the upper end of the supporting frame. The technical scheme has the beneficial effects that oil dripping from cured food can be guided, conveyed and discharged.

The invention relates to the technical field of wind driven generator cooling, and discloses an intelligent cooling device of a wind driven generator. A control panel is mounted on the upper surface of a cooling box; a cooling fan and an alarm lamp are arranged on the front surface of the cooling box from left to right; one side of the cooling box is fixedly connected with a connecting pipe; a water pump is arranged in the cooling box; a water outlet end of the water pump is connected with a fixed pipe; a liquid level sensor is mounted on the inner side of the cooling box; a temperature sensoris arranged on the inner surface of the cooling box; a speed limiting plate is arranged in the cooling box; and one end of the connecting pipe is fixedly connected with a filter box. Gas entering thefilter box can be effectively and fully filtered through a filter screen and a dust removing cover to prevent external impurity gas from entering the cooling box to influence normal work of the winddriven generator; and internal conditions are sent to a wireless terminal through a wireless transceiver module, so that workers can observe remotely.

The invention provides a device for improving the stable operation of liquid crystal equipment, which comprises a waveform generation unit, a comparison unit, a driving control unit, an overcurrent and undervoltage protection unit and a liquid crystal driving unit which are electrically connected in sequence, a level signal output end of the liquid crystal driving unit is connected with a liquid crystal panel unit; the output end of the over-current and under-voltage protection unit is further connected with the input end of the drive control unit. The over-current and under-voltage protectionunit comprises a fifth resistor, an operational amplifier, a comparator, a sixth resistor, an NPN type field effect transistor, a first diode and a seventh resistor. In the power-on and power-off processes of the system, the stable and reliable operation of the system can be realized by enabling the anode end voltage of the comparator to be lower than the cathode end voltage, the working state ofsubsequent units is effectively ensured, and the damage of an abnormal state to the system is reduced; safety and stability of the working state of an over-current and under-voltage state system arerealized by adopting a self-adaptive adjustment and control mode, so that the stability of the liquid crystal display driving equipment is improved.

The invention provides a protective device of a hydraulic oil cylinder. The protective device of the hydraulic oil cylinder comprises a base, an inner circle and an elastic component, wherein the inner circle is arranged in an inner ring of the base, the inner circle is provided with an oil through hole, one end of the elastic component is arranged on the inner ring of the base, the other end of the elastic component is raised towards the direction away from the inner circle, and a part of the oil through hole is shielded when the elastic component deforms and is attached to the inner circle. Damage to related equipment and parts caused by flow and pressure jump of an oil pipe is avoided.

The invention belongs to the field of wastewater treatment devices, and particularly discloses a building construction wastewater treatment device. The device comprises a deposition bottle communicated with a long pipe, wherein a division plate dividing the interior of the long pipe into a liquid inlet cavity and a liquid outlet cavity is fixedly connected into the long pipe; and a liquid outlet pipe communicated with the liquid outlet cavity is fixed on a side wall of the long pipe. The device further comprises a sludge collection tank and an elastic buffer device capable of allowing the sludge collection tank to descend; the deposition bottle is located over the sludge collection tank; and leakage holes are formed in the bottom of the deposition bottle. A sealing plate is connected withthe bottom of the deposition bottle in a sliding manner; through holes matched with the leakage holes are formed in the sealing plates; one end of the sealing plate is wedge-shaped; and a wedge-shapedblock matched with the end part of the sealing plate is fixedly connected with an inner wall of a liquid collection tank. The device solves the problem of high possibility of pipeline blocking sincewastewater contains much silt in a wastewater treatment process in the prior art.