14results about How to "No contact" patented technology

The application belongs to the technical field of electric appliance circuit, and particularly relates to a sound equipment and an audio power amplifier static current adjusting method, which comprises a playing assembly, the playing assembly comprises a shell, an adjusting device is arranged on the inner side of the shell, and the sampling end of the adjusting device comprises a digital potentiometer, a seventh resistor, a seventh NPN triode, a connection upper end and a connection lower end. The audio power amplifier in the existing sound equipment can change the static current after temperature change due to the triode characteristics, which not only affects the hearing and the index, but also can cause the power amplifier burning in the case of positive feedback of temperature and current in the serious case. The traditional audio power amplifier often uses a temperature-sensitive resistor to stabilize the static current, and the working principle determines that the static current cannot be accurately maintained, and only the working range can be ensured. Moreover, due to the temperature sampling point, the effect is often poor.

This invention discloses a dual-station automatic rust removal device for pipe ends, combining laser and mechanical processes, based on a hoisting system, relating to the field of metal pipe surface treatment technology. The device includes a gantry crane mechanism and at least two parallel combined grinding stations. Each combined grinding station includes a combined rust removal device and a roller support mechanism. The roller support mechanism is equipped with actively driven rollers that can rotate the pipe at a uniform speed around its own axis. The combined rust removal device integrates an outer wall rust removal unit, an inner wall rust removal unit, and a positioning unit. Each rust removal unit includes mechanical grinding components and laser rust removal components. The positioning unit enables automatic alignment of the pipe end, simultaneously completing graded rust removal operations on the inner and outer walls of the pipe end. This invention employs a dual-station parallel layout to improve overall operational efficiency, combines mechanical coarse grinding with laser fine rust removal to ensure rust removal quality, integrates a negative pressure dust removal structure, and combines the advantages of high automation and clean operation, adapting to large-scale pipe end rust removal needs.

This invention discloses a method for testing the strength of engineering plastics. It addresses the problem of over-reliance on operator subjective experience and inconsistent judgment standards in determining the ultimate force of engineering plastics. This invention quantifies the difference between bending force and inversion stress, sets a standardized error threshold, and accurately determines whether the two sets of force values ​​exhibit an arithmetic progression. This objectively distinguishes between valid and abnormal detections from a data perspective. For abnormal detections, a retest signal can be directly generated to quickly locate problems such as loose clamping or excessive force loss, reducing invalid detections. For normal test data, a progressive logic of difference range prediction and inversion stress range verification accurately pinpoints the ultimate force of the engineering plastic, clearly distinguishing between the normal buffer deformation stage, the stage of buffer elasticity depletion and synchronous change, and the critical fracture large bending stage.

This application relates to an electrolytic cell for screen printing stencils, belonging to the field of screen printing stencil technology. It includes a cell body with an inlet pipe and an outlet pipe. Multiple limiting plates are fixed to both sides of the inner wall of the cell body, and the limiting plates are vertically arranged. The space between adjacent limiting plates is for the screen printing stencil to enter. Each limiting plate has a through-hole for installation. Two limiting rods pass through the cell body, passing through positioning holes in the screen printing stencil and into the installation slots. At least two sets of installation slots are arranged vertically. The side wall of the cell body has through holes for the limiting rods to pass through. The technical advantages of this application are: high stability of the screen printing stencil after installation, no contact between adjacent screen printing stencils, and full contact between the screen and electrolyte; the method of picking up and putting in screen printing stencils one by one facilitates operation and has good applicability to screen printing stencils of different sizes.

The application discloses a near-constant force magnetic spring device based on edge magnetic field compensation and a force value regulation method thereof, and belongs to the technical field of electromechanical elements and precision machinery. The device comprises a magnetic circuit pair composed of a mover and a stator coaxially sleeved, the mover is a cylindrical permanent magnet with radial magnetization, the stator is a sleeve of soft magnetic material, the axial length of the sleeve is less than the axial length of the permanent magnet; and an adjusting and connecting mechanism for adjusting the initial insertion depth of the permanent magnet. The application actively shapes the force-displacement curve by regulating the permanent magnet parameters, the radial single-sided air gap, the sleeve length and other magnetic circuit parameters, and combines with the initial insertion depth fine adjustment, so that the approximately constant axial magnetic elastic force can be generated within a wide working stroke. The device is non-contact and non-friction, the force value characteristics can be designed, and is suitable for occasions such as gravity compensation, vibration isolation and constant force suspension.

This invention provides a granulation device and method for traditional Chinese medicine (TCM) granules, relating to the field of TCM granulation. The TCM granulation device includes a frame, a pulverizing mechanism, a high-temperature extraction slurry assembly, and a dry mud granulation assembly, all fixedly installed within the frame. The pulverizing mechanism pulverizes the TCM and transfers it to the high-temperature extraction slurry assembly, where it heats and extracts the medicinal liquid. Finally, the liquid is pushed by steam to the dry mud granulation assembly for drying and granulation. This TCM granulation device and method eliminate the need for additional removal of the TCM powder. The steam not only heats the powder but also forms a medicinal liquid. Furthermore, the steam utilizes its high temperature and pressure to propel the medicinal liquid to the next stage, preventing contact between the liquid and external pumping components, thus reducing the probability of contamination. The steam continuously extracts components from the medicinal liquid, saving energy used in decocting TCM. The medicinal liquid is never removed and remains free from contact with the external environment.

The utility model discloses a kind of range hood and cookers, it is related to the technical field of household appliances, comprising: shell, built-in motor, the motor can drive range hood rotation, the bottom of shell front side wall is provided with control panel;Camera module is set on the control panel, the camera module is located at the center of shell front side wall, the camera module includes module main body, the module main body is fixedly connected with several infrared camera and image camera, the infrared camera is distributed in the left and right sides of the image camera;Camera module real-time acquisition cooker area image information and dynamically adjust the wind power of range hood, improve energy efficiency, improve user experience satisfaction, camera module is set in the center position of control panel horizontal direction, can only be gathered to the image information of at least two cookers burner by one camera module.

The utility model belongs to the field of additive manufacturing, and relates to a powder compaction device which comprises a vibration executing mechanism, a driving control system and a monitoring and feedback system. The vibration executing mechanism faces the powder to be compacted; and the monitoring and feedback system is connected with the vibration executing mechanism through the driving control system. According to the powder compaction device, sound wave parameters can be accurately adjusted according to production requirements, and meanwhile the forming efficiency is improved.

This invention belongs to the field of medical testing equipment technology, specifically an intelligent anti-loosening chest breathing effort testing device with a magnetic quick-change probe. The proposed solution includes: a magnetic suction mechanism, one end of which is fitted with a sleeve tube. This mechanism enables quick magnetic attachment and disassembly of the probe to the device body, and forms an intelligent anti-loosening seal through the magnetic attraction and elastic structure, preventing the probe from falling off and leakage of the patient's exhaled air during testing; and a testing mechanism, with both ends fixedly mounted on the other ends of the two magnetic suction mechanisms. This invention utilizes a Tesla valve structure composed of a right side plate, a left side plate, and a mounting plate to create an asymmetric resistance airflow channel. During inhalation, the airflow passes through quickly; during exhalation, the airflow is guided by a triangular diverter and flows along the surfaces of the right and left side plates, creating a counter-impact. This counter-impact significantly increases exhalation resistance, ensuring the required airflow power for testing while greatly reducing the respiratory burden on the tester.

This utility model relates to a dishwasher, including a tub with a washing chamber inside; a water tank located below the tub, the water tank and the tub being connected by a return pipe that allows water to flow from the water tank towards the tub; a waste basket located at the bottom of the tub, the top of the waste basket being open as a water inlet located in the washing chamber, and the waste basket extending into the water tank, the waste basket having drainage holes on its side and bottom walls; a cover plate movably mounted on the top of the waste basket, the cover plate being driven and connected to a drive mechanism to open or close the waste basket's water inlet; the dishwasher also includes a water inlet pipe for supplying water to the tub, the water inlet pipe being connected to the return pipe. When it is not necessary to filter the residue in the washing water, and only the washing water is needed to rinse the dishes, the cover plate can be used to close the waste basket's water inlet, so that the washing water will not flow through the waste basket or come into contact with the residue in the waste basket, avoiding contamination of the washing water by the residue.

The utility model discloses a self-locking type silent three-rail sliding door which comprises a supporting frame and three door frames, the three door frames are all located in the inner space of the supporting frame, the bottom positions of the three door frames are all provided with abutting assemblies, and each abutting assembly comprises an abutting pipe which is connected with the outer wall of the bottom of the corresponding door frame in a sliding and inserted mode. The abutting pipe is fixedly connected with the door frame through bolts, the two ends of the abutting pipe are each slidably connected with a mounting sleeve in an inserted mode, the two mounting sleeves are fixedly connected with the abutting pipe through bolts, the inner wall of the top of the mounting sleeve close to the supporting frame is fixedly connected with a mounting plate, and the inner wall of the top of the mounting plate is rotationally connected with a lead screw; by arranging the abutting assembly, the front section of the sliding wheel in the moving direction can be cleaned, so that it is guaranteed that impurities on the outer side of the sliding rail cannot be in contact with the sliding wheel, and the situation that normal use of the sliding wheel is affected by the impurities is effectively avoided.

The utility model relates to physical sterilization and insect killing equipment for a greenhouse, and aims to solve the technical problem that pesticide is used for killing insects in the greenhouse, and the residual is serious. According to the technical scheme, the device comprises an acceleration air pipe module, an ionization air generator module and a control module, an acceleration air pipe comprises a taper pipe small-opening straight pipe section, a taper pipe section and a taper pipe large-opening straight pipe section and is fixedly arranged in a shell, and the ionization air generator module comprises an ionization air generator shell, a second axial flow fan and an ionization air generator assembly. The ionization air generator shell is fixedly arranged on the top face of the outer shell, the ionization air generator assembly is fixedly arranged in the ionization air generator shell, the two axial flow fans are arranged at inlets of the ionization air generator shell and the outer shell respectively, and the control module comprises a controller, a clock and a timer. The controller is electrically connected with the two axial flow fans and the ionization air generator assembly. Pesticide residues of fruits and vegetables can be greatly reduced, and safe and effective effects can be achieved by applying pesticide according to set time and dosage.

The application relates to a digital control gain high-fidelity input amplification circuit which comprises an MCU, an analog switch U17, an operational amplifier, an electronic volume controller U16, the 7th and 8th pins of the analog switch U17 are connected to the IO output high-low level signals of the MCU, the analog switch U17 is connected to the operational amplifier, the operational amplifier is connected to the electronic volume controller U16, and the MCU is also connected to the electronic volume controller U16. The circuit of the application is composed of an SGM4519 analog switch, an NJM2122M operational amplifier (the highest gain is 28.95dB) and an NJW1195A electronic volume controller (the highest gain is 31.5dB), a high-fidelity adjustable gain amplifier with a total gain of 60.45dB is realized, and the control mode can be diversified, for example, a potentiometer control, an encoder control, a button control or an upper computer control.

The application discloses a magnetic fluid sealed shaft assembly, a shielded motor and a shielded pump. The shaft assembly comprises a shell provided with a containing cavity, a fixed structure arranged on the inner wall of the containing cavity, a rotating shaft supported and arranged in the containing cavity, a magnetic fluid sealing device arranged in the containing cavity, an inner sleeve sealingly and fixedly sleeved on the rotating shaft, a space reserved in the shell for the magnetic fluid sealing device to jump with the rotating shaft and / or adjust the installation angle and position, and an elastic member sealingly installed on the outer sleeve of the magnetic fluid sealing device and sealingly connected with the fixed structure. The structure compensates for the influence of insufficient precision of the flatness of the fixed structure, the perpendicularity of the rotating shaft and the fixed structure, the coaxiality and the axial and radial jumping of the rotating shaft by the elastic installation of the magnetic fluid sealing device, eliminates the additional axial force, radial force, external torsional force and static indeterminate force suffered by the bearing in the magnetic fluid sealing device during work, and enables the magnetic fluid sealing device to be applied to pump products and the like, so as to ensure the sealing effect of the pump products and the like.