31results about How to "Guaranteed cracking effect" patented technology

A rock surface fracturing microwave focusing radiator comprises a standard waveguide section, an impedance matching section and a compression radiation section. The standard waveguide section is used for allowing microwaves transmitted by a microwave source to be connected and is connected with the compression radiation section through the impedance matching section which forms impedance matching between the standard waveguide section and the compression radiation section. The compression radiation section radiates the focused microwaves outwards. The standard waveguide section and the compression radiation section both adopt uniform section rectangular metal cavities, and the impedance matching section adopts a variable section rectangular metal cavity. The wide edge sizes of the standard waveguide section, the impedance matching section and the compression radiation section are matched with the wave length of the microwaves transmitted by the microwave source. The longitudinal narrow edge size of the impedance matching section is in linear transition from large to small. The large size end of the impedance matching section is connected with the standard waveguide section, and the small size end of the impedance matching section is connected with the compression radiation section. The standard waveguide section has two microwave connection structure forms, the first microwave connection structure form is that the microwaves are connected through a rectangular waveguide or annular device, and the second microwave connection structure form is that the microwaves are connected through a coaxial converter and a coaxial cable.

The invention provides an influenza virus subunit vaccine purification method, which comprises a four-step purification technology, and a vaccine prepared thereby. The provided influenza virus subunitvaccine four-step purification technology overcomes the shortages of a conventional three-step purification technology; reduces the content of ovalbumin in the vaccine, enhances the virus splitting effect, and increases the contents of effective antigen substances such as HA.

The invention discloses a hard rock pre-damage and rupture method based on high-voltage pulse electric explosion. and belongs to the technical field of rock mass rupture. The hard rock pre-damage andrupture method comprises the following steps: 1, two holes, namely a first drill hole and a second drill hole, are drilled in a to-be-ruptured rock mass; 2, the first discharge electrode bottom end ofof a first discharge electrode is inserted into the first drill hole, and the second discharge electrode bottom end of a second discharge electrode is inserted into the second drill hole; and 3, if the first discharge electrode and the second discharge electrode are inserted into the hole bottoms firstly when inserted into the first drill hole and the second drill hole for the first time, rock mass pre-damage operation is conducted, and if the first discharge electrode and the second discharge electrode are inserted into the edges of orifices firstly when inserted into the first drill hole and the second drill hole for the first time, rock mass breaking operation is conducted. The method is safe, reliable, environment-friendly and efficient, and can be suitable for various scenes such asrock pre-damage of hard boulders, mine field mining and mine field rock large block crushing during excavation of a shield tunneling machine.

The invention discloses an uphole negative-pressure advancing-type cryogenic fluid injection segmented cyclic fracturing method. According to the method, firstly, water jet slotting equipment is adopted for arranging three fracture areas; water is injected through a water injection pipe so that hydraulic plugging devices can be filled up to form three hermetic fracturing chambers, the three hermetic fracturing chambers are put in a negative-pressure state, and the cryogenic fluid is injected in the hermetic fracturing chambers to fill the hermetic fracturing chambers in sequence and conduct cold shock fracturing on the fracture areas in the three hermetic fracturing chambers; as the cryogenic fluid in the hermetic fracturing chambers is heated up and gasified under the influence of terrestrial heat, a safety relief valve is opened to exhaust the phase-change gas after gas pressure inside a cryogenic fluid exhaust pipe exceeds an opening threshold value of the safety relief valve, thusthe gas pressure inside the cryogenic fluid exhaust pipe and all the hermetic fracturing chambers is lowered, and through the repetitive cycle, the hermetic fracturing chambers are subject to multipletimes of fracturing under gas expansion force. By means of the method, rapid injection of the cryogenic fluid and the fracturing effect on coal and rock mass can be effectively guaranteed, and pollution to the surrounding environment can also be avoided.

The invention discloses a cauliflower vegetable root cleaning device for clean vegetable processing, and relates to the technical field of vegetable processing. The cauliflower vegetable root cleaningdevice for clean vegetable processing comprises a machine body, the left side of the machine body is in inserted connection with a feeding frame, the feeding frame is communicated with an inner cavity of the machine body, the machine body is internally, transversely and movably provided with a conveyor belt, the conveyor belt is located under the right side of the feeding frame, the right end ofthe conveyor belt is driven by a driving motor, the driving motor is fixedly arranged at the right side of the bottom in the machine body, and a cleaning box is arranged under the right side of the conveyor belt. The cauliflower vegetable root cleaning device for clean vegetable processing fixes cauliflowers located on the conveyor belt through barbs, cuts vegetable roots through a blade, and thecauliflowers after roots are removed and fall into the cleaning box for cleaning along with the transmission of the conveyor belt, thereby effectively ensuring effective cleaning in the cauliflowers and solving the problem that an existing cauliflower cleaning device cannot fully clean the inner portions of the cauliflowers.

The invention relates to a production method of an aldehyde-free technical wood veneer used for a veneer solid wood multilayer board assembly. The production method sequentially comprises the steps of(1) drying and repairing an economical fast-growing wood wet veneer; (2) assembling the processed economical fast-growing wood wet veneer, coating aldehyde-free glue, and carrying out cold pressing to form a board blank; (3) carrying out pressure maintaining and high-frequency microwave heating on the board blank; (4) carrying out primary maintenance; (5) carrying out secondary maintenance; and (6) milling the board blank to remove burrs, and planing and cutting the board blank into the aldehyde-free technical wood veneer. According to the production method, the defects that existing small-diameter wood and thin-diameter wood can only be used for manufacturing shaving boards, and the use amount of glue is large, so that the shaving boards are not environmentally friendly are overcome; through the cooperation of the aldehyde-free glue of the optimized type, the optimized glue amount and the optimized assembly production process, the aldehyde-free technical wood veneer with good performance can be produced by using the small-diameter wood and the thin-diameter wood; and not only is the aldehyde-free technical wood veneer low in harmful substance content and environmentally friendly,but also the problems of breakage, burrs, cracks and the like in the production process can be effectively reduced.

The invention relates to the field of traditional Chinese medicine, in particular to a traditional Chinese medicine composition for a medical catheter. The traditional Chinese medicine composition forthe medical catheter comprises officinal magnolia bark extract, taiwan beautyberry leaf extract, dyers woad leaf extract and baical skullcap root extract. The traditional Chinese medicine compositionfor the medical catheter of the invention has the functions of resisting bacteria, inhibiting bacteria, stop bleeding, relieving inflammation, calming mind and relieving pain, and is applied to a prostatic expanding cracking catheter. Compared with catheters in the current market, the catheter of the invention not only ensures the expanding cracking effect, but also has an effect of hemostasis with compression, relieves the compression on external sphincter, does not excessively damage the external sphincter, and prevents urinary incontinence and major bleeding. In addition, the catheter of the present invention can effectively avoid the damage that blood coagulates during surgery to generate thrombus cuased by the addition of foreign materials, and the tolerance of the size of a water bladder after free expansion and in a natural state is not large, thereby relieving the pain of the patient during the surgery.

The invention relates to the field of plant flow cytometry detection, in particular to a preparation method of a flow cytometry sample suitable for cyperus esculentus and a cell lysis solution. According to the preparation method, the cell lysis solution is added twice in the leaf slurry preparation process, so that the cell lysis effect is ensured, the number of obtained single cell nucleuses and the integrity of the cell nucleuses are improved, impure peaks detected and analyzed by a flow cytometer are reduced, and the detection accuracy is improved. Meanwhile, the improved cell lysis buffer solution suitable for preparation of the cyperus esculentus flow cytometry sample provided by the invention is used for treating a tissue sample, and all the components have a synergistic effect in a limited dosage range, so that complete cell nucleuses can be effectively released, residual cytoplasm fragments can be removed, and the influence of a phenol mixture on a result is reduced; the stability of cell nucleuses in the suspension liquid is kept, the agglutination is prevented, and the accuracy of flow cytometry analysis and detection is improved.

The invention relates to the field of medical instruments for prostate dilatation surgery, in particular to a transurethral prostatic dilatation catheter and method thereof. A TPU material is a hyperbranched polyurethane material. Compared with catheters in the current market, the prostatic dilatation catheter has the advantages that positioning of the catheter is more accurate and convenient, thecatheter can be kept fixed after the prostate is dilated, the dilatation effect is ensured, the hemostasis effect based on compression is achieved, the compression of the external sphincter is relieved, and the external sphincter cannot be excessively damaged, so that urinary incontinence and massive hemorrhage are prevented. In addition, the catheter can effectively avoid the situation that blood coagulation is caused in surgery due to the addition of foreign materials and correspondingly results in danger of thrombus. Moreover, the size of a water bag in a freely expanded state is almost the same as that in a natural state, so that the pain of a patient is relieved in a surgery process.

The invention relates to the field of medical equipment for dilatation of the prostate, in particular to a novel catheter for dilation of the prostate. A novel prostatic fissure catheter is provided with a catheterization cavity, a flushing cavity, and a high-pressure water bladder cavity. Compared with the catheters currently on the market, the prostate expansion catheter described in the present invention is more accurate and convenient in positioning, and can be kept fixed after the prostate is expanded to ensure the expansion effect, play the role of compression and hemostasis, and relieve the compression of the external sphincter , will not excessively damage the external sphincter, and prevent urinary incontinence and hemorrhage; in addition, the catheter of the present invention can effectively avoid blood coagulation during the operation due to the addition of foreign materials, resulting in the danger of thrombus, and the water bladder can be expanded freely and naturally The tolerance of the size in the state is not large, so that the pain of the patient is reduced during the operation.

The invention relates to the technical field of mechanical equipment, in particular to an eucommia ulmoides key-fruit shelling and automatic separating system, which comprises a vibration feeder, wherein a first hopper is fixed above the higher end of the vibration feeder, the lower end of the vibration feeder is connected with a collector in a flexible connection mode, the collector is in a duckbilled shape, and an electromagnet is fixed on the lower surface of the collector. The system has the beneficial effects that the system is reasonable in structural design and high in automation degree, shells, pulp and carpopodium of eucommia ulmoides key-fruits can be automatically separated, the labor consumption is reduced, and the working efficiency is improved; the raw materials do not need to be pretreated in the early stage, separated coarse eucommia ulmoides gum threads are complete, a large amount of materials are conveyed through wind power, separated kernels are pure, and a guarantee is provided for development and utilization of eucommia ulmoides gum in eucommia ulmoides key-fruits and further extraction of effective components of the kernels; and the fruits can be crushed one by one after being automatically arranged, so that shell jamming and omission can be avoided, and the shell breaking effect of the eucommia ulmoides key-fruits is ensured.

A screw feeder for a plastic waste pyrolysis furnace, which is connected with a lower shaft seat through a connecting rod at the lower part of the feeder outer cover, the lower shaft seat is connected with the lower end of the feed shaft through a bearing, and the lower shaft seat supports the feed shaft The lower end, the upper end of the feed shaft and the upper cover are connected by bearings, realizing the up and down support of the feed shaft, which can effectively solve the swing problem of the feed shaft in the existing suspension setting during the rotation process, and avoid the feed shaft and the feed shaft. The friction between the outer covers of the feeder ensures the service life of the equipment. The upper part of the outer cover of the feeder of the present invention is a straight barrel, and the lower part is a flared conical barrel. The inner wall of the straight barrel is provided with a heat-resistant and wear-resistant inner lining. The lining can effectively reduce the friction between the material and the feeder cover during the feeding process, ensuring the service life of the feeder cover.

The invention discloses a rail disassembling device and belongs to the field of steel machining equipment. The rail disassembling device comprises a feed component, a hammer-pressing component and a discharging component which are connected in sequence; the hammer-pressing component comprises a conveying track, a hammer-pressing plate, a hammer-pressing cylinder, a hammer-pressing box body and a crosser; the conveying track is arranged in a manner of penetrating through the hammer-pressing box body; the hammer-pressing cylinder is arranged at the two ends of the lower end face of the hammer-pressing plate; the hammer-pressing plate is fixedly connected with a force applying shaft of the hammer-pressing cylinder; one end, far away from the hammer-pressing plate, of the hammer-pressing cylinder is fixedly arranged on the bottom surface; the longitudinal center line of the hammer-pressing plate is arranged in parallel with that of the conveying track; the crosser is arranged at the internal top end of the hammer-pressing box body; the crosser and the hammer-pressing plate are arranged in a manner of corresponding to each other in the vertical direction; the conveying track is providedwith a plurality of rotating wheels; the rotating wheels are driven to rotate by the same motor and chain mechanism; each rotating wheel is provided with a positioning groove; and each positioning groove is arranged corresponding to a third profile of the rail. The rail disassembling device disclosed by the invention can realize automatic feeding, fracturing and discharging of the rail and is high in automation degree, high in work efficiency and low in labor intensity.

A screw feeder for a plastic waste pyrolysis furnace, which is connected with a lower shaft seat through a connecting rod at the lower part of the feeder outer cover, the lower shaft seat is connected with the lower end of the feed shaft through a bearing, and the lower shaft seat supports the feed shaft The lower end, the upper end of the feed shaft and the upper cover are connected by bearings, realizing the up and down support of the feed shaft, which can effectively solve the swing problem of the feed shaft in the existing suspension setting during the rotation process, and avoid the feed shaft and the feed shaft. The friction between the outer covers of the feeder ensures the service life of the equipment. The pitch of the feeding screw is related to the feeding speed and efficiency. If the feeding screw pitch is large, the feeding efficiency will be high, but the resistance to the rotation of the feeding screw will be large. If the feeding screw pitch is small, the feeding efficiency will be low, which will easily lead to cracking of the cracking furnace. The efficiency is low, but the present invention limits the pitch of the feeding screw to 1/3 of the outer diameter of the feeding screw, which can not only ensure the feeding efficiency, but also reduce the feeding resistance and save energy.