34results about How to "Has the value of promotion and use" patented technology

The invention discloses a garlic sowing machine and belongs to the field of agriculture machinery. The garlic sowing machine is applied to mechanized garlic sowing and comprises a rack, wherein the rack is equipped with travelling wheels and a drawing mechanism, a sowing box, an aligning mechanism and a garlic clove furrow opener are further mounted on the rack, the aligning mechanism comprises transmission gears and a conveying chain, and support plates are arranged on the conveying chain; an aligning baffle plate A and an aligning baffle plate B with porous structures are arranged on two sides in the downlink direction of the conveying chain respectively and arranged on a chain baffle plate, space between the aligning baffle plate A and the aligning baffle plate B is gradually reduced, and the aligning baffle plate A, the aligning baffle plate B and the chain baffle plate constitute a channel allowing the conveying chain and the support plates to move; a sowing baffle plate is arranged below the aligning mechanism, and sowing ports are formed in the sowing baffle plate. With the adoption of the technical scheme, the defects that the planting requirement cannot be met due to the fact that the garlic sowing machine cannot guarantee that the garlic clove bulbils are upward during sowing in the prior art is overcome.

The invention discloses a special bipolar linear voltage-stabilized source for a software testing host. The special bipolar linear voltage-stabilized source for the software testing host comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a first three terminal regulator, a second three terminal regulator, a first amplifier, a second amplifier and a bridge rectifier circuit, the alternating current input end of the bridge rectifier circuit is connected with the electric supply, and the anode output end of the bridge rectifier circuit is respectively connected with the first end of the first capacitor and the input end of the first three terminal regulator. The special bipolar linear voltage-stabilized source for the software testing host uses two three terminal regulators to form a simple and practical symmetrical positive/negative voltage-stabilized source, the testing host is not influenced when the electric supply is changed suddenly, and the testing precision is guaranteed; the special bipolar linear voltage-stabilized source for the software testing host is simple, practical, stable, effective and broad in popularization and use value.

The invention discloses a dust-free rice beating machine. The dust-free rice beating machine comprises a machine frame, a motor, an output shaft, a driving wheel, a driven wheel, a rotating shaft, a stone roll, a roll base and a hulling chamber. A feeding inlet is installed in the top end of the machine frame. The hulling chamber is arranged on the upper portion of the machine frame. The motor is installed on the lower portion of the machine frame. The right end of the motor is connected with the output shaft. The output shaft is connected with the driving wheel. The driving wheel is connected with the driven wheel through a belt, and the driven wheel is connected with the rotating shaft. The rotating shaft penetrates through the machine frame to enter the hulling chamber, and is further connected with the stone roll inside the hulling chamber. The stone roll is provided with arc-shaped protrusions and the roll base is installed inside the hulling chamber. The upper surface of the roll base is also provided with arc-shaped protrusions. A rice grain outlet is formed in the lower end of the hulling chamber. A stalk outlet is formed in the right end of the hulling chamber. According to the dust-free rice beating machine, the stone roll and the roll base are used for milling rice, rice skin of the milled rice cannot be destroyed, and original nutritive value of the rice is effectively stored; and moreover, manufacturing cost is low and application and popularization value can be achieved.

The invention discloses a labor-saving wrench for a construction site. The labor-saving wrench comprises a wrench body, a positioning device and an extension device, wherein the wrench body is connected with the extension device by virtue of the positioning device, the positioning device comprises a first connecting rod, one end of the first connecting rod is fixedly connected with the wrench body, the other end of the first connecting rod is fixedly connected with a positioning disc, a positioning groove is formed in the outer side of the positioning disc, a positioning rod groove is formed in a second connecting rod, a reset spring is arranged on one end, which is far from of a rotating shaft, of the positioning rod groove, and the outer side of the reset spring is fixedly connected with a positioning rod; the extension device comprises an extension sleeve, an extension rod sleeves the interior of the extension sleeve, a V-shaped groove is formed in an opening of the extension sleeve, and a locking ring is in threaded connection to the outer side of the extension sleeve. The labor-saving wrench has the advantages of simple structure, labor saving and wide application range and has popularization and application values, and the self length and the screwing angle can be adjusted.

The invention discloses a control system and method with three direct-current motors in forward-direction serial connection. The system is characterized in that eight IGBT modules form four bridge arms in a two-two serial connection manner, the four bridge arms are parallelly connected to the positive electrode and the negative electrode of a direct-current power supply, the three direct-current motors in forward-direction serial connection are serially connected with the four bridge arms, the three direct-current motors are connected with a reference voltage synthesizer sequentially through aspeed sensor, a current sensor, a speed adjusting module and a secondary PI controller, the reference voltage synthesizer is connected with a four-phase inverter through a PWM pulse generating unit,the four-phase inverter is connected with the reference voltage synthesizer through a current adjusting module and a primary PI controller, the four-phase inverter is connected to the PWM pulse generating unit through the reference voltage synthesizer, and pulse control signals generated by the PWM pulse generating unit controls the on and off of the eight IGBT modules to drive the three direct-current motors to operate. The control system is few in used circuit components, simple in structure, stable and reliable in performance and worthy of popularization and application.

The invention discloses a chocolate polishing and shaping device. The chocolate polishing and shaping device comprises a feeder, a feeding channel, a discharge channel, an upper and lower surface polishing and shaping device, a left and right surface polishing and shaping device and a cutter, wherein the lower end of the feeder is connected with one end of the feeding channel, the other end of the feeding channel is in contact with the first ends of the upper and lower surface polishing and shaping device and the left and right surface polishing and shaping device, a polishing belt of the upper and lower surface polishing and shaping device is sequentially in contact with a polishing belt of the left and right surface polishing and shaping device, the first end of the discharge channel is in contact with the second ends of the upper and lower surface polishing and shaping device and the left and right surface polishing and shaping device, and the cutter is arranged at the second end of the discharge channel. The chocolate polishing and shaping device is used for simultaneously polishing the left and right surfaces and the upper and lower surfaces of chocolate so as to prevent chocolate deforming caused by respective polishing and has a simple structure and popularizing and using values.

The invention discloses a vertical parting molding machine system. The vertical parting molding machine system comprises a PLC (Programmable Logic Controller) system, a floor type machine seat and a sandbox assembly, wherein a forward pressure plate, a backward pressure plate and a backward pressure plate framework are arranged at the front part of the floor type machine seat; a transverse slide way is formed on the backward pressure plate framework; the backward pressure plate slides on the transverse slide way; a main oil cylinder framework is arranged at the rear end of the floor type machine seat; a main oil cylinder is fixed on the main oil cylinder framework; the backward pressure plate framework is connected with the main oil cylinder framework through four guide rods; the sandbox assembly is guided by the guide rods to slide forwards and backwards; a piston rod extending end of the main oil cylinder is perpendicularly and fixedly connected with the forward pressure plate; a guide plate of the forward pressure plate is guided by the four guide rods to slide forwards and backwards; a sand jetting barrel and a pressure air pocket are arranged above the sandbox assembly; a clutch device is arranged at each of the left end and the right end of the guide plate of the forward pressure plate; a pair of slide plates are correspondingly arranged at the two ends of the sandbox assembly. The vertical parting molding machine system achieves mechanization and automation of sand molding, is low in construction cost and energy consumption and small in occupied area, causes little pollution and has extensive popularizing and using values.

The invention discloses a formula and a preparation process of indoor plant growth pottery clay. The pottery clay is composed of leaf mould, mountain clay, field soil, grass ash, slaked lime, river sand, diammonium phosphate, conifer leaves, decomposed chicken manure, nitric nitrogen, water-soluble phosphoric anhydride, water-soluble potassium oxide, water-soluble magnesium oxide, water-soluble boron, sawdust, urea, calcium superphosphate, potassium sulfate and rooting powder. Compared with prior arts, the formula and the preparation process have the advantages that the planting material is prepared from pottery clay. The pottery clay is impregnated with nutrients, and the nutrients can be separated out slowly, such that a long-lasting effect can be kept. The formula and the preparation process have popularization and application values.

The invention discloses a sine wave generation circuit. The sine wave generation circuit comprises an operational amplifier, wherein an output end of the operational amplifier is grounded through a second resistor and a first resistor connected in series, a connection end between the second resistor and the first resistor is connected with an in-phase input end of the operational amplifier, an anti-phase input end of the operational amplifier is connected with an adjustable end pin of an adjustable resistor, one of two fixed end pins of the adjustable resistor is grounded, and the other one is connected to the output end of the operational amplifier through a third resistor, and the connection end between the adjustable resistor and the third resistor is led out to be used as the output end of the sine wave generation circuit. The sine wave generation circuit is simple in structure, and steady and reliable in performance, and has popularization and use value.

The invention discloses an automatic floodlight circuit for a toilet. The automatic floodlight circuit comprises first to fourth resistors, first to fourth capacitors, first to fourth triodes, first to third diodes, a body proximity switch, a photoresistor, a potentiometer, a bulb, a relay and an antenna. In comparison with the prior art, the automatic floodlight circuit for toilet adopts the body proximity switch as a core element and the peripheral elements to form a microwave human induction switch, when a person is induced, the microwave human induction switch is started and is not affected by various factors, such as ray, temperature and environment, and the automatic floodlight circuit is convenient to use and has popularization and application value.

The invention discloses a high stable power supply control circuit of electronic communication equipment, which comprises a transformer, a rectifier, first to fifth capacitors, a first diode, a second diode, first to fourth resistors, a field effect tube, a triode, a thyristor and a potentiometer; when output voltage is heightened, the potential of a control terminal of the thyristor is increased, the cathode voltage of the thyristor is reduced, and after regulation of the field effect tube, the potential of an emitter of the triode is increased, so the output voltage is stable. When output current is larger than a set value, the triode is stopped, so the output current is limited within the set value to achieve a current stabilizing aim. Compared with prior art, the high stable power supply control circuit has the advantages that the circuit is simple in structure, adopts less electronic elements, and is low in cost and favorable for popularization, particularly, the high stable power supply control circuit is stable in output voltage and guarantees the stable operation of the communication equipment, the communication quality is improved and the circuit has promotion and use values.

The invention discloses a double-DC-motor parallel system and a current hysteresis control method. The method includes steps that rotating speed signals and current signals of double direct current motors are collected; the system set reference speed and the actual rotating speed signal of the direct current motor are made to pass through a speed adjusting module to obtain a speed error, and the speed error is made to pass through a PI controller to obtain a reference current; current synthesis calculation of the reference current is performed to obtain three groups of combined currents; current reconstruction calculation of the collected current signals is performed to obtain three groups of reconstructed current signals; the synthesized current signal is compared with the reconstructed current signal through a hysteresis comparator to generate a PWM pulse signal, and a working state of an inverter circuit switching device is controlled, so driving of the double DC motors is realized.The method is advantaged in that the current response speed is improved, the harmonic current is quickly supplemented, a tracking error of the system is reduced, and stability is very high.

The invention discloses a method for extracting genome DNA from phyllachora ascocarp. Compared with the prior art, the method has the advantage that the phyllachora ascocarp is utilized as a material for directly extracting DNA. Before the extraction of DNA, a lysate buffer solution is utilized for processing twice, excessive colloids and polysaccharides are removed by virtue of a principle that DNA is low in solubility at a low temperature, finally an extracting solution is added to split cell membranes to extract DNA, and phenol-chloroform-isoamylol is added in the extraction process to remove redundant proteins through extraction. The method is applicable to fungi materials with high contents of colloids, polysaccharides and proteins, the yield and the quality of the extracted DNA are not obviously influenced by the existence and the content of impurities, and the guarantee is provided for the subsequent molecular research of phyllachora; and the method has popularization and use values.

The invention discloses a sensor circuit of an alarm. The sensor circuit of the alarm comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a bus register, a first phase inverter, a second phase inverter, a first diode, a second diode, a first capacitor, a second capacitor, a first light emitting diode, a second light emitting diode and a power management chip, wherein the model of the power management chip is 9602; and a first end of the first resistor is a signal inputting end. The sensor circuit of the alarm is a CMOS (complementary metal-oxide-semiconductor transistor) alarming circuit consisting of the bus register, the phase inverters and the power management chip. The sensor circuit is mainly used for the alarm; when low level is inputted, the first light emitting diode is not turned on; when high level is inputted, the first light emitting diode is turned on; and when high level inputting is changed into low level inputting or low level inputting is changed into high level inputting, the second light emitting diode twinkles once. The sensor circuit of the alarm is simple in structure and high in sensitivity, and has popularization and using value.