67results about How to "Realize stepless adjustment" patented technology

This utility model discloses a folding stool, including a seat frame, a backrest, and legs. The backrest is rotatably mounted to the seat frame via a first pivot, and the legs are hinged to the seat frame via a first adjustment assembly. The first adjustment assembly has a limit hole, and the seat frame has a positioning hole corresponding to the limit hole. A rotating pin is inserted into the limit hole and the positioning hole. A second adjustment assembly is provided between the backrest and the seat frame. By providing a second adjustment assembly consisting of a pull plate, a toothed plate, a gear, and a spring, the user can easily adjust the backrest angle by holding the pull plate with one hand to separate the toothed plate from the gear. After releasing the pull plate, the spring automatically resets, causing the toothed plate to re-engage with the gear for quick locking. This structure is not only easy to operate but also achieves stepless adjustment, meeting the user's personalized comfort needs and overcoming the shortcomings of traditional pin-type adjustment which has a fixed angle, is laborious to operate, and is prone to wear.

The utility model discloses a heat guarantee device, electric energy equipment and a vehicle, and relates to the technical field of rail transit air conditioners, a liquid cooling branch of the heat guarantee device comprises a water return sub-branch, a water outlet sub-branch, a second heating branch and one or more first heating branches, and the second heating branch and the one or more first heating branches are arranged in parallel; each first heating branch is provided with a first heater; the second heating branch is provided with a second heater and a flow adjusting part; wherein the heating power of the first heater is Q1, and Q1 is a non-negative number; the heating power of the second heater is Q2, and Q2 is a non-negative number; the number of the first heating branches is N, and N is a natural number greater than 0; the heating power of the heat guarantee device can be adjusted in a stepless mode in the range of {kQ2 + NQ1k belongs to [0, 1]}, and k is the adjusting range of the flow adjusting piece. According to the heat guarantee device, stepless adjustment of the heating power is achieved, the problem that in the prior art, the temperature of cooling liquid is difficult to flexibly adjust through a single high-power electric heater is effectively solved, and therefore the stability and adaptability of temperature control are improved.

The utility model relates to filling device technical field discloses a kind of liquid dripping device capable of adjusting filling nozzle, including rack, the bottom of the rack is fixedly connected with base, the top of the rack is provided with adjusting mechanism, the adjusting mechanism is used to adjust the caliber of canning nozzle to optimize drop, the top left side of the base is provided with blowing mechanism, the blowing mechanism is used to airflow auxiliary liquid, the top rear side of the base is provided with cleaning mechanism, the left side of the adjusting mechanism is provided with infusion mechanism, the adjusting mechanism includes sealing ring, the outer wall of the sealing ring is fixedly connected in the top inside of base, the inner wall of the sealing ring is slidably connected with valve core. In the utility model, when the size of liquid outlet needs to be adjusted, it is not necessary to stop machine and replace spare parts, the valve core changes the filling port inner diameter of valve seat by moving, adjusts liquid flow rate to meet the delivery demand, effectively realizes stepless regulation.

This utility model relates to the field of livestock breeding technology, specifically a precise quantitative feeding pig feed dispenser. It includes a base, a hopper and a guide frame seat on the base, and a quantitative feeding mechanism on the guide frame seat. The quantitative feeding mechanism includes a base plate, a top plate, and a material hopper with adjustable volume. This precise quantitative feeding pig feed dispenser, through its quantitative feeding mechanism, adjusts the amount of feed dispensed by controlling the volume of the material hopper. It can precisely and flexibly dispense feed from the hopper for pigs at different growth stages and with different breeding scales.

This utility model discloses a maintenance-free LED explosion-proof lamp, relating to the field of LED explosion-proof lamp technology. The utility model includes: a lamp body and a mounting plate disposed on the upper end of the lamp body; two fixed frames, symmetrically distributed and fixedly installed on the bottom of the mounting plate, with lifting plates slidably inserted into each of the two fixed frames, and a rotating plate rotatably installed between the two lifting plates. This utility model uses an electric lifting assembly to drive the two lifting plates to rise or fall synchronously within the vertical sliding grooves of the fixed frames, achieving stepless adjustment of the lamp body height. When it is necessary to change the illumination direction, the drive motor drives the rotating shaft to rotate, and the rotating plate rotates accordingly, thereby causing the lamp body at its bottom to rotate at an angle. The entire lifting process does not require manual climbing; it only requires ground remote control or on-site button operation. Simultaneously, after rotating to the specified angle, the positioning assembly locks the lamp body's angle, eliminating the loosening hazards caused by traditional manual angle rotation and bolt tightening.

The utility model discloses an adjustable permanent magnet damper, and belongs to the technical field of permanent magnet brakes, and the permanent magnet damper comprises a housing, main shafts which are respectively fixed at two ends of the housing, and main shafts which are rotatably connected in the housing and on two end covers and penetrate through the two end covers; the magnetic piece is arranged in the shell, corresponds to the outer side of the main shaft and is used for generating a magnetic field; the sliding sleeve axially moves in the shell; the magnetic sleeve is fixedly arranged on the inner side of the sliding sleeve and located on one side of the outer portions of the multiple magnetic parts, and the adjusting assembly is arranged on the shell and the end cover, connected with the sliding sleeve and used for driving the sliding sleeve to move and adjusting the length of the magnetic sleeve covering the outer sides of the magnetic parts. According to the adjustable permanent magnet damper, the position of the sliding sleeve is changed through the adjusting assembly, and then the length of the part, covering the outer side of the magnetic piece, of the magnetic sleeve is adjusted, so that stepless adjustment from the minimum damping torque to the maximum damping torque can be achieved, and various requirements for torque under different working conditions are met.

The invention discloses an assembly type laminated slab cast-in-place slab strip reinforcing part, and belongs to the technical field of independent supporting formworks. The assembly type laminated slab cast-in-place slab strip reinforcing part comprises a supporting base, and a supporting sleeve is fixed to the top end of the supporting base; a mounting clamping ring is fixed outside the supporting sleeve, a supporting mechanism capable of being flexibly folded and unfolded is arranged outside the mounting clamping ring, and a connecting mechanism capable of rapidly disassembling and assembling the supporting mechanism is arranged outside the supporting mechanism; by arranging the supporting mechanisms and the connecting mechanisms, the mode of combining sliding folding and lock catch connection is adopted, so that the supporting rods can be flexibly folded and unfolded, when transportation is needed, the triangular stabilizing frame can be folded along the connecting mechanisms, the size of the triangular stabilizing frame is greatly reduced, transportation is facilitated, and meanwhile the triangular stabilizing frame is convenient to use. When the connecting mechanism is connected with the supporting sleeve, the connecting mechanism can be tightly matched with the supporting sleeve, firm connection is ensured, and therefore the stability of the supporting sleeve is effectively improved.

The utility model discloses a glass product impact testing device belongs to experimental equipment technical field. Aiming at the single problem of test data caused by the fixed falling height of the steel ball of the existing device, an innovative solution is provided. The utility model discloses at least three non - coplanar support rods through the first support plate setting, one of the support rod sets up the liftable lifting cylinder, and the lifting cylinder is connected with the adjusting frame and installs the electromagnetic chuck, and the electromagnetic chuck is connected with the power supply through the electric connection line that is equipped with on - off switch, realizes the adsorption and release to the steel ball, and the top second support plate sets up first deflection pulley and second deflection pulley, and is linked with the lifting cylinder and the lifting block through the lifting connection line linkage, realizes the height continuous regulation of electromagnetic chuck. The utility model discloses through the height -adjustable electromagnetic chuck and the pulley set transmission structure, can change the falling height of ball flexibly, realizes different impact force test, and the diversity and application scope of glass product impact resistance performance test have been improved significantly.

The application discloses a pre-buried adjustable expansion depth expansion bolt assembly and belongs to the technical field of expansion bolts, which comprises a spring pad, a flat pad, a pre-buried sleeve, a hexagonal nut, an expansion sleeve, an expansion cone, an adjusting screw rod and a sealing end cover. In order to overcome the defects of the prior art, such as the damage to the concrete structure and the internal steel bars caused by the post-construction of the expansion bolt, the fixed and unadjustable expansion depth of the pre-buried anchor bolt, the jamming of the adjusting mechanism caused by the cement seepage due to the unreliable sealing of the plastic film during the pouring process, and the loosening of the anchoring force under long-term vibration, the application provides the pre-buried adjustable expansion depth expansion bolt assembly, so that the expansion depth of the expansion bolt on the market can be flexibly adjusted according to the actual wall thickness or the size of the decorative layer under the premise of pre-buried installation, the problems of the poor stability of the sealing end cover during the pouring process, the cement leakage caused by the poor stability of the sealing end cover, the single anchoring force between the expansion sleeve and the concrete and the insufficient long-term reliability of the expansion sleeve and the concrete are solved.

The utility model discloses a novel garden ladder for garden maintenance belongs to garden maintenance technical field. Including a pair of first vertical rod, a pair of first vertical rod between being connected with a plurality of first crosspieces, the lateral surface of a pair of first vertical rod is provided with the sliding slot, the inside of sliding slot all slides second vertical rod, and a plurality of second crosspieces are connected between second vertical rod, and the side of second vertical rod in mutual separation all is equipped with the rack, and the side of connecting sleeve all is equipped with the rack in the mutual separation of first vertical rod, and the inside rotation of connecting sleeve is connected with the gear, and the gear and rack are engaged connection, and the side rotation of connecting sleeve is connected with the pivot, and the pivot and gear rotation are connected, and the free end of pivot is equipped with the handle of rotating, and the outside of pivot is equipped with the fixed part, and the fixed part is used for locking the rotation of pivot, and this application can reach the purpose of stepless regulation forest ladder height for novel garden ladder for garden maintenance.

The utility model provides a kind of thick and thin adjusting assembly, for adjusting how many functional liquid is input to foaming assembly, comprising: operating member, PCB circuit board;The inductor is provided on the PCB circuit board, and the inductor is used to sense the position change of the operating member;The signal output of the PCB circuit board is to liquid pump to control liquid pump to start to pump into functional liquid to foaming assembly;The operating member moves under the action of external force to make the operating member and inductor relative movement, the inductor senses the position change of the operating member and different signal is correspondingly output to the liquid pump to change the power of liquid pump.The utility model further provides a kind of foaming assembly, including the thick and thin adjusting assembly as above.The utility model further provides a kind of shower controller, including liquid pump and the foaming assembly as above.The utility model further provides a kind of shower system, including the shower controller and water outlet terminal as above, and the foam outlet of foaming assembly is connected with water outlet terminal.

The invention discloses an anti-gastroesophageal reflux nursing device for the digestive system department, and particularly relates to the field of nursing devices. Comprising a support plate; the neck pillow is arranged on one side of the supporting plate; the two rotating plates are rotationally connected to the supporting plates on the two sides of the neck pillow; the headrest is connected between the two rotating plates, and one side of the headrest is matched with the outer surface of the neck pillow; the supporting rod is connected between the two rotating plates, and the supporting rod is arranged on the side away from the neck pillow; the telescopic rod is arranged between the supporting plate and the driving rod, and the telescopic rod is of an arc-shaped structure and is located on the motion trail of the driving rod; and the driving assembly is used for quickly adjusting the extension of the telescopic rod. By the adoption of the technical scheme, the problem that an existing bed head lifting measure is inconvenient for a patient to autonomously adjust is solved, the patient can autonomously adjust the angle of the headrest, and convenience is improved.

The invention discloses a thyroid cancer postoperative drainage device. The thyroid cancer postoperative drainage device comprises a double-cavity tube and a fixing mechanism. The double-cavity tube comprises a flushing tube and a drainage tube which are arranged side by side, the pipe diameter of the flushing tube is smaller than that of the drainage tube, the head end of the flushing tube is shorter than that of the drainage tube, and the double-cavity tube is sleeved with an inflatable and deflatable air bag. The fixing mechanism comprises a limiting seat, a fixing belt, a pressing plate and a manual adjusting part, the limiting seat is fixed to the human body through the fixing belt, a pipe penetrating groove is formed in the limiting seat, the double-cavity pipe penetrates through the pipe penetrating groove, the air bag is located in the pipe penetrating groove, and the pressing plate is movably arranged in the pipe penetrating groove and connected with the manual adjusting part. The manual adjusting piece is used for driving the pressing plate to move, and the air bag is extruded to be elastically deformed so that the double-cavity tube can be locked at the preset position in the tube penetrating groove. Through cooperation of the air bag and the pressing plate, lossless and accurate-positioning stable fixing of the drainage tube is achieved, the risk that the tube is displaced, disengaged or squashed is effectively avoided, and the safety and convenience of postoperative drainage are improved.

This invention belongs to the technical field of grinding equipment, specifically disclosing an automated processing equipment and method for round rod-shaped aluminum profiles. The equipment includes a table, with a transmission assembly and a polishing machine connected to the upper part of the table. The transmission assembly includes a drive structure and a support structure. A second transmission pipe rotates at one end of the support structure, and a first transmission pipe rotates at the other end. A sleeve is fixed to the inner wall of the first transmission pipe, and a conveying blade is fixed to the sleeve. A mesh is formed near the conveying blade on the first transmission pipe, and a clamping assembly is fixed to the sleeve. This automated processing equipment integrates a drying function into the transmission assembly, utilizing the profile's own rotation to drive the conveying blade, achieving instant polishing and drying of the cutting fluid. Simultaneously, a spring-loaded abutment wheel provides adaptive follow-up support for the rotating long rod profile. This simplifies the equipment structure, reduces manufacturing costs, and effectively improves polishing accuracy and production continuity.

The utility model provides a kind of water inlet valve locking device, it is related to bathroom product technical field, including water inlet body, adjusting pipe, snap ring and buckle, the bottom of water inlet body is equipped with multiple elastic parts along circumferential direction, at least one the side wall of the elastic part is formed with limiting portion;The adjusting pipe is inserted in the assembly hole formed by each elastic part, and is connected with the thread in the inner wall of the elastic part;The snap ring is set on the water inlet body, to drive each elastic part to the adjusting pipe side and hold tightly, the buckle is matched with the snap ring, and is inserted or clamped on the limiting portion, to make the snap ring limit along axial direction, so that the water inlet body and adjusting pipe are locked. Improve the problem that existing water inlet valve adjusting structure is prone to looseness.

The invention discloses a cable centralized routing arrangement mechanism for an electric energy metering box and a use method thereof, and relates to the technical field of cable arrangement devices, the cable centralized routing arrangement mechanism comprises a box body, a routing mechanism is arranged in the box body, and a cooling mechanism is arranged on the routing mechanism. According to the cable centralized routing arrangement mechanism for the electric energy metering box and the use method thereof, the worm drives the worm gear and the threaded rod to precisely transmit, the circular-truncated-cone-shaped threaded block is driven to axially move, the four centrosymmetric adjusting blocks are synchronously pushed to radially move along the sliding grooves in the fixed cylinder, stepless adjustment of the caliber of a cable channel is achieved, and the cable centralized routing arrangement mechanism is simple in structure and convenient to use. By means of the design, the mechanism can be perfectly matched with cables of different diameters, stable supporting is provided for preventing loosening, meanwhile, damage to an insulating layer caused by mechanical stress generated due to too tight clamping is avoided, a linear alignment path is formed through cooperation of the first wire arrangement hole, the second wire arrangement hole and the wire frame right facing an outlet, and the wire arrangement efficiency is improved. The cable is ensured to be arranged orderly from the wire inlet hole to the wire outlet hole, and bending stress and mutual interference are reduced.

The utility model belongs to the technical field of flashlights, and particularly relates to a slide rail glare flashlight which comprises a flashlight body and a fixing device, the fixing device is connected with the flashlight body, the fixing device comprises a slide rail part, and the slide rail part is used for being connected with a slide way. The shape of the slide way is matched with the shape of the slide rail part, the slide way can be fixed on a bicycle handlebar or a riding cap, the flashlight body can be fixed by clamping the slide rail part on the slide way in a sliding mode, an operator does not need to hold the flashlight body by hand, and the two hands of the user can be liberated.

The utility model discloses an adjustable garbage incinerator grate ventilation quantity device relates to garbage incineration treatment equipment technical field, aims at solving the problem of traditional device ventilation quantity regulation extensive, complex structure is easy to damage, including primary air chamber, four groups of symmetrical synchronous shaft seat and adjusting mechanism, primary air chamber air inlet, and adjusting bin is driven adjusting mechanism in adjusting motor, adjusting mechanism contains multiple groups of upper and lower vane, is hinged through connecting shaft, and is realized opening and closing by drive shaft linkage, and synchronous shaft seat cooperates with adjusting bin inner wall spacing strip, guide strip, guarantees stable movement, and upper and lower vane are bent and are equipped with cloth wind grating at top, and optimization ventilation. Through adjusting motor drive drive shaft, make vane action change ventilation cross section, realize stepless regulation of ventilation quantity, have the advantage of accurate control of wind, reliable structure, uniform ventilation, can improve incineration efficiency, reduce maintenance cost and pollutant emission.

The invention relates to the technical field of laser cutting, and discloses a production process and production equipment of carbon fiber gridding cloth, and the production process comprises the following steps: step 1, unwinding: placing a plurality of rolls of carbon fiber precursors on an unwinding frame of an unwinding device, tensioning the carbon fiber precursors through a tensioning mechanism, guiding the carbon fiber precursors through a guide roller, and then feeding the carbon fiber precursors into a dipping device; step 2, impregnating: fully impregnating the carbon fiber precursor in a resin glue solution of an impregnating tank, meanwhile, enabling the resin glue solution to circularly flow under the action of a glue solution circulating mechanism, controlling the temperature of the glue solution to be 45-55 DEG C by a heating assembly, and impregnating for 35-55 seconds; step 3, forming: enabling the infiltrated carbon fiber precursor to enter a forming device, and forming a blank with a regular grid structure by a forming roller group under the action of a heating system and a pressurizing system through cooperation of a lower forming roller and an upper forming roller; and 4, winding is conducted, specifically, the cut carbon fiber gridding cloth is wound into rolls through a winding roller of a winding device.

The utility model discloses a kind of discharging mechanisms of tea oil processing, belong to tea oil processing technical field, it includes oil press, the upper end of discharging mechanism front end face center is equipped with discharging structure, the side wall center of the discharging structure is equipped with filter box, the inside center of the filter box is equipped with filter structure, the upper end center of the filter box is equipped with heating air inlet structure, in addition, the utility model, by screw conveying rod stable feeding, and, by the flow of controllable speed adjustment tea oil into filter box, cooperate with clean hot air sent by heating air inlet structure, accurately reduce tea oil viscosity, make tea oil more easily pass second filter screen in flow, solve the problem that tea oil solidifies and blocks filter screen under low temperature environment, purified hot air is used as flowing medium to reduce tea oil tackiness, reduce tea oil and moisture contact, avoid tea oil oxidation deterioration due to humidity in filtration process.

The utility model provides a shower head with water stop and spray gun water functions, and relates to the technical field of bathroom products, the shower head comprises a shower head body, a first switch mechanism and a second switch mechanism, the shower head body is provided with a water inlet flow channel, a shower head water cavity and a spray gun water cavity, the shower head water cavity is communicated with a water outlet assembly, and the spray gun water cavity is communicated with a spray gun water outlet nozzle; the first switching mechanism comprises a switching valve, and the switching valve enables the water inlet flow channel to be switched between communication with the shower head water cavity and communication with the spray gun water cavity. The second switch mechanism comprises a water distribution piece arranged in the water distribution cavity and a push button linked with the water distribution piece, the water distribution cavity is communicated with the shower head water cavity, the water outlet end of the water distribution cavity is provided with a water stop hole and a plurality of water outlet holes, the water outlet holes are communicated with water outlet water channels on the water outlet assembly in a one-to-one correspondence mode, and the push button is pushed to drive the water distribution piece to rotate. And the water distribution port on the water distribution piece is aligned and communicated with the water stop hole or the water outlet hole. Therefore, the problems that an existing multifunctional shower head is complex in structure and multiple in switch piece are solved.

The utility model discloses an ALC plate cleaning device. Which comprises a belt conveyor connected with a controller, and is characterized by further comprising a table plate, a through groove is formed in the middle of the table plate and penetrates through the table plate towards the right side, the belt conveyor is installed in the through groove, a support and two plate side cleaning assemblies are welded to the bottom of the table plate, and the two plate side cleaning assemblies are symmetrically arranged. The two plate side cleaning assemblies are located on the two sides of the through groove respectively, and the distance between the two plate side cleaning assemblies is adjustable; the dust suction pipe is fixed to the bottom of the table plate, one end of the dust suction pipe is closed, the other end of the dust suction pipe is used for being connected with a dust collector, and the plate side cleaning assembly is matched with the dust suction pipe; the spacing of the device is adjustable so as to adapt to ALC plates with different widths, floating ash can be absorbed, and secondary pollution is avoided.

This utility model discloses an adjustable distance self-sealing integrated electrothermal suspended moxibustion device, including a cylindrical moxibustion cylinder with an opening at one end and an end plate at the other end. The inner cavity of the moxibustion cylinder has a moxa stick fixing seat, on which the moxa stick is mounted and faces the opening end of the moxibustion cylinder. It also includes a detachable sealing cap fitted onto the opening end of the moxibustion cylinder and a moxa stick telescopic adjustment mechanism arranged at the axial center of the moxibustion cylinder. A rechargeable electrothermal ignition module is integrated within the sealing cap. The moxa stick telescopic adjustment mechanism is connected to the moxa stick fixing seat to adjust its axial movement, allowing the moxa stick to extend or retract from the moxibustion cylinder. When extended, the burning end contacts the rechargeable electrothermal ignition module to ignite; when retracted, the sealing cap and the moxibustion cylinder form a seal to isolate oxygen and extinguish the ignition. This utility model enables a complete "one-tube integrated" moxibustion process, requiring no external fire source for ignition, has a wide range of applications, and solves the problems of distance adjustment and burns associated with traditional handheld operation, improving safety and portability.

This utility model relates to an adjustable high-current generator based on an autotransformer, comprising an autotransformer body (1), an annular iron core (2) on the autotransformer body (1), several turns of adjustable coil (3) wound on the annular iron core (2), a voltage adjustment knob (4) rotatably mounted on the autotransformer body (1), a sliding contact (5) on the voltage adjustment knob (4) cooperating with each adjustable coil (3), several turns of fixed coil (6) wound on the annular iron core (2), one end of the fixed coil (6) connected to one end of the adjustable coil (3) according to polarity, and the other end forming the primary coil with the coil between the sliding contact (5), and a low-voltage high-current secondary coil (7) wound on the annular iron core (2). It simplifies the structure of existing high-current generators, is smaller in size and lighter in weight, easier to transport, has a wider current adjustment range, lower cost, and can meet diverse use and testing needs.

This application relates to a circular small-diaphragm recording microphone with stepless adjustment of low-frequency response. A first outer shell and a second outer shell are respectively connected to a fixed base. A second contact rod is fixedly connected to the fixed base. One end of the second contact rod is coaxially in contact with the first contact rod. The first contact rod has an inverted T-shaped structure, including a shaft section and a platform section. A through hole is opened in the sound insulation plate, and the shaft section of the first contact rod passes through it and overlaps the platform section. The microphone head is fixedly connected in the first outer shell to receive external sound signals. A blind hole is opened in the microphone head, and the shaft section of the first contact rod is placed in the blind hole. An elastic sheet is a ring-shaped elastic structure, fitted onto the shaft section of the first contact rod, and located between the microphone head and the sound insulation plate. This application controls the compression of the elastic sheet by rotating the first outer shell, changing the distance between the microphone head and the sound insulation plate, thereby changing the acoustic cavity structure and achieving stepless adjustment of the low-frequency response. This allows for appropriate low-frequency reception and high-fidelity recording when picking up different types of sound sources.

This utility model discloses a welding fixture for automotive battery connectors, relating to the field of welding fixture technology. It includes a base, with symmetrically arranged sliding plates slidably connected inside the base, and a partition plate fixedly connected inside the base. A set of positive and negative threaded rods are rotatably connected to the partition plate. A guide rod is provided on one side of the top of the sliding plates, and a fixing mechanism is slidably connected to the guide rod. The fixing mechanism includes multiple pressure blocks, with a threaded block fixedly connected to one side of the last pressure block. This utility model, by setting up a base, sliding plates, partition plate, and positive and negative threaded rods, allows for stepless adjustment of the fixture width by rotating the positive and negative threaded rods, whose reverse threads at both ends drive the sliding plates on both sides to move synchronously in opposite directions along the first sliding groove of the base. This precisely matches the width requirements of batteries of different sizes, reduces the number of customized fixtures, and allows for synchronous adjustment by a single hand using sprockets and chains.

The present application relates to transformer heat dissipation technical field, specifically to a kind of oil-immersed transformer with self-circulation heat dissipation structure, the side of transformer shell is fixedly connected with cabinet, the inside of cabinet is installed with circulating assembly, circulating assembly includes motor fixedly connected with the inner wall of cabinet, the output end of motor is fixedly connected with crank, the end of crank away from motor is rotatably connected with first sliding block;Through the reciprocating plunger pump structure of piston rod and sleeve being set, cooperate with the one-way valve in first pipeline and second pipeline, intermittent pulse flow is formed to oil liquid, pulse flow constantly destroys stable thermal boundary layer when flowing through winding oil channel, so that boundary layer cannot thicken, thereby substantially improve convective heat transfer coefficient, under the same average flow, the heat exchange efficiency of pulse jet is improved compared with traditional continuous flow, solve the problem that stable thermal boundary layer is formed in prior art by continuous oil flow, leading to low heat exchange efficiency.