60 results about "Spiracle" patented technology

An electronic cigarette box is provided in the present invention. The electronic cigarette box is configured for receiving electronic cigarettes, and the electronic cigarettes define spiracles for gas circulation. The electronic cigarette box includes sealing devices corresponding to the spiracles, and the sealing devices are configured for sealing the spiracles.

The invention relates to a gas purifier and its working method. The gas purifier comprises a casing, a hollow shaft enables running fit in the casing, a filter cylinder used for filtering gas is fixedly sleeved in the hollow shaft, the bottom of the filter cylinder is enclosed, a top of the filter cylinder comprises an opening; several spiracles are distributed on circumferential walls of the hollow shaft in the filter cylinder, a top of the hollow shaft is used for connecting with high pressure water source, so that high pressure water is sprayed to the inner wall of the filter cylinder through each spiracle; the hollow shaft and a transmission mechanism enable running fit so that the filter cylinder rotates; the opening at the top of the filter cylinder and the inner wall of the casing enable rotary sealing cooperation through a seal mechanism; a gas inlet used for inputting to-be-purified gas is arranged on the wall of the casing and positioned below the seal mechanism, and an air exhaust opening communicated with the opening of the filter cylinder is arranged on the wall of the casing.

The invention relates to an environment-friendly natural enemy insect collecting device, the structure of which comprises a moth collecting funnel, a moth collecting cage, a negative pressure box, an air intake duct, a blower, an air exhaust pipe, and a dust collecting bag, the moth collecting cage is arranged below the moth collecting cage in the negative pressure box; an air outlet is arranged at the upper portion of the negative pressure box and connected to an air inlet of the blower via the air intake duct; and an air outlet of the blower is connected to the dust collecting bag via the air exhaust pipe. When the collecting device collects intermediate host such as rice moth imago or gelechiid moth imago for natural enemy insect propagation, the imago moth on the cover of an incubator quickly enters into the moth collecting cage guided by the air flow, and the following moth spawn and dust are entered into different collecting locations to be separated effectively. The imago moth and the moth squama can not fly to cause environmental pollution so as to ensure the cleanliness of the moth propagation room and avoid the insect squama being contacted with the human skin or being inhaled into respiratory tract to cause untoward effect. The utility model is safe and suitable for environmental protection.

The invention relates to a manual massage milk sucker, which comprises a milk sucker assembly, a milk sucking cover arranged at one end of the milk sucker assembly and provided with a trumpet-shaped opening, a silica gel breast pad stuck to the trumpet-shaped inner wall of the milk sucking cover, a milk sucking pump assembly embedded into the cavity of the milk sucker assembly, a rubber covered handle articulated with the other end of the milk sucker assembly through a rotating shaft and jointed with the milk sucking pump assembly, and a milk bottle assembled at the thread end of the milk sucker assembly; an air bag and a milk sucker upper cover for fixing the air hole of the air bag are arranged in the cavity of the milk sucker assembly; and the trumpet-shaped part of the milk sucking cover is communicated with an air hole formed on an air guide groove of the silica gel breast pad, and an air tube is connected between the air hole on the air guide groove and the air hole of the air bag exposed out of the milk sucker upper cover. The manual massage milk sucker simulates a mode of sucking milk by using the lip of a child, and the bubble thin wall on the silica gel breast pad performs soft extrusive massage on the breast, so that a user soothes the nerve, the mammary gland is effectively stimulated to secrete the milk, milk secretion reflection is raised, meanwhile, the milk is sucked more easily from the mammary gland, and the breast is massaged to stimulate milk secretion at the same time of sucking the milk.

The invention relates to the field of Rhodeus sinensis propagation, in particular to an artificial propagation technology. The invention mainly relates to an artificial propagation technology for Rhodeus sinensis. The artificial propagation technology for the Rhodeus sinensis comprises infrastructure equipment, parent fish selection, parent fish temporary rearing, parent fish maturing acceleration, parent fish spawning, ovum pickup and incubation, wherein the parent fish maturing acceleration, the parent fish spawning, the ovum pickup and the incubation are the core of the artificial propagation technology for the Rhodeus sinensis. According to the artificial propagation technology for the Rhodeus sinensis provided by the invention, a square pond of 1 mu or a cement pit of 10-50m<2> is selected, and is equipped with micropores to enhance oxygen. Parent fishes are characterized in that lateral lines are incomplete, and the back upper place of each spiracle of each parent fish has shoulder patches. Male fishes are red in eye socket, and bright in body color; the abdomen of each female fish has a strip ovipositor. 4.5g / l of VC is added to temporary rearing water; before put, the parent fishes are soaked in 5mmg / l of potassium permanganate for 10 minutes; the density of the potassium permanganate is lower than 0.5kg / m<3>, and a toad of 50g is cultivated in every 4m<2> of water to prevent fungal diseases. 10g / kg of minced earthworm meat and spirulina powder is fed. The female-male ratio of the parent fishes is 1:1, oxytocic is injected after the parent fishes are narcotized by 30mg / lMS-222, the ovum pickup is performed by using Sinanodonta woodiana or unio douglasiae which is 8-10cm wide, and the ratio of the Sinanodonta woodiana or the unio douglasiae to the fishes is 2:3. The Sinanodonta woodiana or the unio douglasiae is harvested once every two days, the ovum-contained Sinanodonta woodiana or the ovum-contained unio douglasiae is moved to a hatching pond, and corresponding ovum-free Sinanodonta woodiana or corresponding ovum-free unio douglasiae is supplemented.

A projectile has fins that are hingedly coupled to a fuselage. The fins are configured to wrap around the fuselage, assuming a location as close as possible to the fuselage, when the projectile is in a gun or launch tube. The fins have spiracles, one or more openings in each of the fins that allow pressurized gases to pass therethrough. The spiracles may be always open, or may open only when there is a sufficient pressure differential between the sides (major surfaces) of the fins. The spiracles allow release of pressurized gases that are trapped between the fins and the fuselage during the launch process. This prevents undesired outward movement or bending of the fins when the projectile reaches a muzzle brake during launch, a structure which causes a sudden release of pressure at radially outer locations of the launch tube.

The invention provides a d-limonene-containing mixed oil agent for killing solenopsis invicta buren and a method for killing the solenopsis invicta buren. The d-limonene-containing mixed oil agent consists of 80 to 90 percent of d-limonene and 10 to 20 percent of edible vegetable oil in percentage by volume. The method for killing the solenopsis invicta buren comprises the step of placing a carrier adsorbing the d-limonene-containing mixed oil agent into solenopsis invicta buren nests, wherein the using amount of the d-limonene-containing mixed oil agent in each nest is 10 to 50 ml. In the d-limonene-containing mixed oil agent and the method for killing the solenopsis invicta buren, the high volatility of the d-limonene can permeate the nests and wax protective layers of all the individual body surfaces of the solenopsis invicta buren in the nests can be damaged through high permeability of the d-limonene, so the blockage of the spiracles of the solenopsis invicta buren can cause asphyxiation and death of the solenopsis invicta buren; the edible vegetable oil has unique oil odor, so the number of solenopsis invicta buren escaping from the nests caused by the repelling reaction to the d-limonene can be reduced; the d-limonene-containing mixed oil agent enters the nests quickly by a cave administration method, so that all the individuals including the queen ant in each nest can be killed quickly and the aim of killing the solenopsis invicta buren nests is fulfilled.

The invention discloses an assembling and disassembling device of diesel engine valve, comprising a support, the support is provided with a cross rod, on end of a compression bar is arranged on a drive compression bar which is a force application apparatus and rotates by the cross rod as the pivot, the compression bar is provided with a sleeve, the sleeve is articulated with a pressure valve device which can be arranged on the diesel engine valve to compress the valve spring. The assembling and disassembling device of diesel engine valve has the advantages of flexible movement, convenient operation and reducing the waste of manpower and time, improving the efficiency of assembling and disassembling.

The invention provides a flexible constraint rack for small animal mouth and nose exposing, which comprises a bottom bracket, an external fixation connector and a flexible screen frame, wherein the front end of the bottom bracket is connected with the external fixation connector of an internal air inlet pipe to provide suction gas to a small animal, a mouth-and-nose exposing air chamber with a circle of expiration air holes is arranged inside the external fixation connector, the interior of the external fixation connector can accommodate the head of the small animal under a breathing trial, fixing bolts at the edge of the two sides of the bottom bracket can be used for fixing a fixed tank and firmly mounting the flexible screen frame well, the small animal is fixed between the bottom bracket and the flexible screen frame, the flexible constraint net on the flexible screen frame can constrain the body of the small animal, a neck fixing hoop is used for fixing the neck of the small animal into a neck fixing and clamping hole, the tail of the small animal can go through the tail fixing and clamping hole, and excreta can be discharged into an excrement collection box from the excretory opening of the bottom bracket. The flexible constraint rack for small animal mouth and nose exposing has the benefits as follows: the small animal can be quickly fixed, gas leakage is avoided, the small animal is enabled to be comfortable and have no bad consequences of dyspnoea, struggling and the like, and the flexible constraint rack can be widely used in scientific researches to respiratory disease pathology and medicine development.

The invention relates to a novel tooth cleaning machine, which comprises two parts of a pressure pump and the tooth cleaning machine, a cartridge type propeller of the pressure pump pressurizes water or gas to convey to the tooth cleaning machine, and the water or gas is sprayed out from a water injector arranged on the tooth cleaning machine, the tooth cleaning machine rotates for washing the dirt on tooth for reaching the purpose of tooth cleaning; the tooth cleaning machine can be arranged with the pressure pump but without the pressurization propeller, and a water pipe is directly jointed to a high pressure water nozzle, the tooth cleaning machine is rotated to wash the dirt on tooth; a motor is arranged with facilities for positive and negative rotation as well as speed regulation; a brush head is arranged with the facility for preventing spraying water to outside; a shaft of the motor is hollow for jointing with the water pipe, and the tooth cleaning machine can be set with the brush head joint at the other side while tooth cleaning machine, and also can be set with positive and negative rotation two propellers, telescoping of a brush head rod can control the rotation of the propeller; or a common toothbrush is set as a hollow one, the brush head is set as a spiracle, bristles can not be set around the spiracle, and the toothbrush joints with the high pressure water source through the water pipe. The novel tooth cleaning machine has the advantages of easy carrying, low cost and good tooth cleaning effect.

The invention provides an umbrella-shaped cuff trachea cannula. A closed cuff is bonded to the periphery of a section of trachea cannula, a cuff air injection hole is formed on the trachea cannula part of the cuff section and communicated with an air injection tube, the air injection tube extends out of the trachea cannula wall and is connected to an air release valve, the air release valve is communicated with an air bag through a conduit, and the upper part of the air bag is connected with an air injection port in which an air injection valve is arranged. The front part of the cuff is an umbrella-shaped wall, the front side of the umbrella-shaped wall is connected with a limit net, and the limit net is provided with a plurality of limit meshes. Compared with the conventional cuff trachea cannula, the umbrella-shaped cuff trachea cannula can automatically adjust the pressure between the cuff and the human trachea wall so as to prevent over-high pressure from destroying the trachea mucosa and prevent air leakage. Moreover, the umbrella-shaped cuff trachea cannula is convenient and smooth to plug and pull, and is suitable to be used as a trachea cannula and a trachea cutting cannula in the field of medical equipment.

A sprinkler structure includes a shell base, a water nozzle, a plurality of spiracles, a water conveyance element, an eccentric gear device, a drive gear device, and a fixing base. The eccentric gear device performs an eccentric movement in responding to an external force, and drives the water conveyance element to perform a reciprocating pivotal turning action. The drive gear device is disposed inside the shell base and is coupled to the eccentric gear device. The drive gear device is driven by the water current to rotate, so that the eccentric gear device drives the water conveyance element to perform the reciprocating pivotal turning action. The water nozzle is driven by the reciprocating pivotal turning action to change the angle of the water outlet surface continuously within an angle range. The fixing base is connected to the water nozzle and the shell base.

The invention provides an acipenseridae fish breeding device provided with air bags, and relates to the technical field of aquaculture. The device includes a culture box; the upper right of the culture box is provided with a water pipe; the water pipe communicates with water source; the upper end of the culture box is provided with a heat preservation shell; the left side of the heat preservationshell communicates with an exhaust fan; the connection section of the exhaust fan and the heat preservation shell is provided with a filter screen; an air outlet of the exhaust fan is connected to anL-shaped air pipe; and the L-shaped air pipe is uniformly provided with semicircular air bags, and the semicircular air bags are provided with air holes. Under the action of the exhaust fan, bait in the culture box can be flew upward from the bottom, so that the bait can float in the water all the time, and waste caused by the sinking and piling of the bait can be avoided; through the arrangementof the filter screen, filtering can be performed on impurities in air, and the impurities can be prevented from entering water to cause pollution to the water; and the device is simple in structure and convenient in operation, can perform automatic drying and stirring on the bait so that the bait can be prevented from wetting and caking, and is suitable for large-scale popularization.

The invention discloses a sliding sucking-cup assembly with a backpressure sucking cup. The sliding sucking-cup assembly comprises the sliding sucking cup, a connecting rod, the backpressure sucking cup, a vacuum generator, an elastic assembly, a seal cap and a fixing frame. The sliding sucking cup comprises a sliding disc and an elastic leather cup, wherein a groove is inward formed in the surface of the sliding disc, and an air exhausting hole communicated with the elastic leather cup is formed in the groove. One end of the connecting rod is communicated with the elastic leather cup, the other end of the connecting rod is communicated with the backpressure sucking cup, and the portion, communicated with the backpressure sucking cup, of the backpressure sucking cup, of the elastic leathercup is connected with the vacuum generator. The elastic assembly is arranged on the connecting rod, the other end of the backpressure sucking cup is in sealed connection with the seal cap, the area,at the connecting end face of the elastic leather cup and the connecting rod, of the elastic leather cup is S2, and S1 is greater than S2. The invention also discloses a curtain wall robot applying the sliding sucking-cup assembly. The sucking-cup assembly achieves that sucking is prior to pulling and pressing and is good in sucking stability and high in safety reliability when applied to the curtain wall robot.

The invention discloses a manual oxygenation fish tank which comprises a fish tank body. A vertical partition plate is arranged in the fish tank body to divide the fish tank body into two independent cavities, a hose is arranged at the bottom of each cavity, air holes are formed in the hoses, one end of each hose is sealed and the other end of each hose is connected with an air bag. When oxygen deficiency occurs, air blowing oxygenation can be conducted by simply squeezing the air bags, therefore, the problem that oxygen deficiency is prone to occurring in the fish tank is solved and interestingness can also be enhanced.

The invention discloses an explosion-proof bottle cap for vacuum bottle, comprising a bottle cap, an air vent and a reducing valve, wherein, the air vent is arranged in the bottle cap and goes through the bottle cap. The reducing valve comprises a piston, two reset springs, an air gate and an air inlet hole. The piston is arranged in the air vent. One end of the reset spring is fixed on the inner wall of the air vent and the other end is connected with the upper end and the lower end of the piston. The air gate and the air inlet hole are arranged on the two sides of the air vent in the bottle cap, which are communicated with the hole wall of the air vent. The invention is simple in structure and the pressure difference can drive the piston to move whether the air pressure in the vacuum bottle increases or reduces, so the air gate and the air inlet hole are communicated with each other to exhaust or enter the air and the pressure difference in the vacuum bottle reduces in order to prevent explosion. The invention is suitable for all the vacuum bottle.

The invention discloses a pesticide for prevention and control of chili pests. The pesticide is prepared from weeping willow leaves, quick lime, pinus massoniana, cacumen biotae, sodium hypochlorite, sodium penta-chlorate, potassium permanganate, a mixture of kieselguhr and borax and clear water. The pesticide is environmentally friendly, free of environmental pollution, wide in raw material source, simple in preparation process and low in cost; through reasonable matching and using of agents, decocted fluid of the pinus massoniana matched with regulation of the potassium permanganate can dissolve waxiness on the surfaces of the pests and block spiracles of the pests to suffocate the pests; by adding the mixture of kieselguhr and borax and extracts of the weeping willow leaves and the cacumen biotae matched with the quick lime, the pesticide effect can be improved, the insect disease prevention effect can be improved to the maximum extent until imagoes and larvae of the pests are killed directly, and eggs of the pests can be effectively prevented from intruding again, so that the pesticide effect is lasting.

The invention discloses an air isolation structure for drinking bucket, including a drinking bucket, a bucket cover, a sleeve barrel and a water sac, wherein, the drinking bucket is provided with a bucket neck and a bucket mouth; the bucket cover is opened with an air hole and a water hole, the water hole is provided with a plug for preventing the water in the bucket from overflowing; the sleeve barrel includes a barrel and a barrel cap, the barrel is a hollow straight pipe, a terminal port of the barrel everts to form the barrel cap; the water sac is used for filling water and has a sac neck and a sac mouth; the water sac and the sleeve barrel are jointly provided in the inner cavity of the drinking bucket, the water sac is sleeved on the barrel of the sleeve barrel through the sac neck, the barrel cap is suspended on the bucket mouth of the drinking bucket, and the inner wall of the drinking bucket and the out wall of the water sac forms a space for storing air; the inner wall of the bucket neck, the bucket mouth rim and the out wall of the water sac neck, the barrel, the barrel cap and the bucket cover jointly constitute an air ingress and egress channel which is communicated to the air storing space. The invention completely isolates the water in the drinking bucket and the air entering into the bucket, so as to avoid the secondary pollution of the bacilli and dust in the air to the drinking water, and the invention will not damage the structure of drinking bucket for facilitating storage and transportation, and is also applicable to automatized filling production line of barrelled water.

The invention provides an atomizer mask for a child. The atomizer mask for the child comprises a semi-ovoid main mask body, wherein the main mask body is provided with two one-way vent valves, and each one-way vent valve is formed by assembling a valve cover, an air blocking plate and a valve body and has a one-way guiding function on gas. When a patient inhales, the one-way vent valve at the air inlet position is turned on, the one-way vent valve at the air outlet position is turned off, and medicine particles are inhaled into the mask with inspiration of the patient and then inhaled into a respiratory system of the patient. When the patient exhales, the one-way vent valve at the air inlet position is turned off, the one-way vent valve at the air outlet position is turned on, and waste air is exhausted outside the body through the mask. The defects of poor suction tube type atomizing effect, easy atomizer pollution and caused cross infection are overcome, and the defects of medicine waste and treatment effect influence caused by an open air outlet atomizer mask are also overcome.

The invention discloses a double-air-bag tracheal foreign body extractor which comprises a hollow hose, an extraction air bag, a supporting air bag and a conical elastic soft head, wherein the extraction air bag, the supporting air bag and the conical elastic soft head are connected with the hollow hose. The longitudinal section of the extraction air bag is in a double-U shape, and the extraction air bag is made of materials which are good in elasticity and strength. The longitudinal section of the supporting air bag is in a shape like a Chinese character 'ao', and the supporting air bag is made of materials which are good in strength and poor in elasticity. The two air bags are connected with an inner cavity through air holes formed in the wall of the hollow hose encircled by the two air bags. The front end of the hollow hose is connected with the conical solid elastic head. The glottis is exposed through a laryngoscope, the extractor is coated with lubricating oil, when the conical elastic soft head is put into trachea and gradually put deep into the position close to the tracheal bifurcation, a moderate amount of gas is injected into the hollow hose through an injector until the hollow hose can be pulled out exactly, then the hollow hose is pulled out slowly until the hollow hose is close to the glottis, then the moderate amount of gas is injected again, the diameter of the front end of the hollow hose becomes small until the hollow hose can pass the glottis easily, the air bags are pulled out, and foreign bodies can be taken out. The double-air-bag tracheal foreign body extractor has the advantages of being convenient and fast to use, free of a bronchoscope, free of secondary injury and capable of taking out a plurality of small foreign bodies at a time.

A bushing for conducting air in a nail gun is arranged between an air chamber and a cylinder received in a housing of the nail gun. The bushing is adjacent to a bottom of a main valve for driving hitting motion of the nail gun. A number of main valve holes that are adjacent to the main valve are formed in a sidewall of the cylinder. At least one air inlet is formed in a bottom of a sidewall of the cylinder. An air flow passage is defined in the housing and is in communication with the main valve and the air hole. A valve plug which is configured for opening or closing the air flow passage is received in the air flow passage. The valve plug divides the air flow passage into an upper portion and a lower portion. The lower portion is formed in the housing. An annular end surface is formed on a top of the bushing. The annular end surface defines a main air inlet for the main valve. An end portion extends from the bushing and having the upper portion of the air flow passage formed therein. The bushing further includes at least one upper air hole in communication with the air chamber, the main inlet and the upper portion of the air flow passage.

The invention discloses a double-cavity flush sputum aspirator, comprising a sputum suction tube and a sputum collection bottle. The suction tube comprises a negative pressure tube and a suction tube. Both the negative pressure tube and the suction tube are hollow tubes. One end of every hollow tube is connected to the sputum collection bottle, and a line of the negative pressure tube and the suction tube is communicated with inner space of the sputum collection bottle. The other end of the suction tube is wrapped with a sponge wipe. The other end of the negative pressure tube is connected with a negative pressure joint which is provided with a raised thread. The side of the negative pressure joint is provided with a raised air hole. The inner wall of the suction tube is attached a liquid delivery tube. The double-cavity flush sputum aspirator enables mucus suction, oral cleaning and oral flushing to be carried out at the same time, the operating procedure is greatly simplified, oral cleaning time is shortened, pain of a patient is reduced, and labor intensity of medical staff is reduced; the double-cavity flush sputum aspirator has high cleaning capacity, is safe to use, and can collect the mucus in the sputum collection bottle so that sampling and chemical examination are convenient for medical staff.

The invention discloses an exhaust funnel silencer and relates to the field of car parts. The exhaust funnel silencer comprises a barrel, end covers are arranged at the two ends of the barrel, and thetwo ends of the barrel communicate with an air inlet pipe and an air outlet pipe separately. The right end of the air inlet pipe extends into the barrel, air holes are formed in the wall of the rightend of the air inlet pipe in rows and lines, a baffle is arranged at the right end of the air inlet pipe, a transition pipe is further coaxially connected to the right end of the air inlet pipe, andair holes are further formed in the wall of the left end of the transition pipe in rows and lines. The joint of the air inlet pipe and the transition pipe is sleeved with a resonance pipe, a cavity isformed by the resonance pipe, the air inlet pipe and the transition pipe, and the air holes are all located inside the cavity. A first porous plate is further arranged inside the barrel, the right end of the transition pipe penetrates through the first porous plate, and the air outlet pipe penetrates through the first porous plate leftwards. The exhaust funnel silencer is simple in structure, good in silencing effect and capable of achieving repeated expansion.

A pet chew toy, especially for dogs, does not wear out easily, does not get chewed up easily, and which continues to maintain the interest of the pet throughout the life of the chew toy, has a resilient body in the shape of a lock which has a body and a U-shaped member connected to the body. The body is hollow, and has an open bottom wall leading to an interior chamber with a plurality of resiliently deformable ribs extending from the walls of the hollow body and into the interior chamber. One pair of opposed ribs is larger than the others, so as to divide the interior chamber into two smaller compartments. In this way, the hollow body can hold either one large dog treat or two smaller dog treats, such that the deformable ribs grip and retain the dog treat(s) inside the interior chamber. An air hole is preferably also provided in a wall opposite to the open bottom wall, to prevent suction from developing when the pet places its tongue into the interior chamber.

The invention provides a dustproof barrel for a spray gun, and belongs to the technical field of spray guns. The invention solves the problem that an air pressure hole on the conventional barrel for the spray gun is easy to block. The dustproof barrel for the spray gun comprises a barrel with an opening and a barrel cover connected with the opening in a sealing way; the barrel cover is provided with an air pressure hole, and the middle of the barrel cover is provided with a connecting part vertical to the barrel cover; a feeding hole is formed in the connecting part; a suction pipe is arranged in the barrel; the lower end of the suction pipe is positioned at the bottom of an inner cavity of the barrel, and the upper end of the suction pipe is connected with the lower end of the feeding hole; the dustproof barrel also comprises a handle seat sleeved on the connecting part; the handle seat is provided with an air inlet which is communicated with the air pressure hole through a vent pipe; and an air inlet port of the air inlet faces downwards. The dustproof barrel for the spray gun has the advantages of preventing the air pressure hole on the barrel from being blocked and achieving better sealing effect on the barrel cover and the barrel.

The invention discloses a mamestra brassicae nuclear polyhedrosis virus insecticidal mixture and an insecticidal synergistic method thereof. The mixture comprises a mamestra brassicae nuclear polyhedrosis virus preparation and is prepared by mixing the mamestra brassicae nuclear polyhedrosis virus preparation with parasitic nematodes serving as mediator organisms. Because the parasitic nematodes can actively find pests, invade pest bodies through various ways such as the oral cavity, the spiracle and the anus and parasitise in the pest bodies to cause numerous wounds, the virus infection timeis shortened, the probability of a mamestra brassicae nuclear polyhedrosis virus to infect the pests is increased, the lethal time of the pests is shortened, and the insecticidal efficiency of the mamestra brassicae nuclear polyhedrosis virus is improved.

The invention provides a novel dust remover. The novel dust remover comprises a loading part and a dust removal part arranged on the top of the loading part. A dust suction pipe is arranged on the left side of the dust removal part in a communicated mode. A dust suction head is fixedly arranged at the tail end of the dust suction pipe. A loading cavity with an upward end opening and a push-and-pull groove located below the loading cavity and provided with a rightward end opening are formed in the loading part. A discharge opening is formed between the loading cavity and the push-and-pull groove. A push-and-pull part is installed in the push-and-pull groove in a sliding mode, a loading groove with an upward end opening is formed in the push-and-pull part, a bottom plate stretching rightwards is arranged at the right end of the bottom wall of the push-and-pull groove, a first sliding groove with an upward end opening is formed in the bottom wall of the push-and-pull groove and in the bottom plate, a first sliding block is installed in the first sliding groove in a sliding mode, a screw rod is installed in the first sliding block in a spiracle fit mode, the right end of the screw rod is rotationally installed in the right end wall of the first sliding groove, the left end of the screw rod is connected with an actuator fixedly installed in the left end wall of the first sliding groove, a guide groove stretching left and right is formed in the front end wall and the rear end wall of the discharge opening, and a sliding plate stretching front and back is installed in the guide groove in a sliding mode.

The invention discloses a nontoxic cockroach killing agent and a preparation method thereof. The nontoxic cockroach killing agent is composed of, by weight, 90-100 parts of pericarp extract, 1-5 partsof white sugar, 1-5 parts of starch, 0.1-0.5 part of fatty alcohol ether sodium sulfate, 0.1-0.3 part of silicone oil, 0.2-0.8 part of sodium benzoate, 0.5-1 part of sodium citrate, 0.5-1 part of cinnamon bark oil, 0.5-1 part of sesame oil and 20-30 parts of water, wherein the starch is wheat starch, corn starch or potato starch. Attention or feed intake of cockroaches is attracted through aromatic ingredients; the nontoxic cockroach killing agent is liquid, thereby being capable of blocking spiracles at the stomach of a cockroach if the stomach of the cockroach contacts with the nontoxic cockroach killing agent to disable the cockroach to breathe, so that the objective of cockroach killing is achieved; after being eaten, the nontoxic cockroach killing agent can interfere nervous centralis of the cockroach to attract the same to eat the agent to death.

The invention relates to a novel fish tank. The fish tank adopts a working principle of using a conical ovipositor and a fish-egg separation structure, wherein fish eggs enter a space that adult fishes cannot enter after the adult fishes discharge the fish eggs, so that danger to little fishes newly hatched from the adult fishes is reduced. The fish tank comprises a base, a component for control and information display, a power plug, a lamp tube, an electric heating component, a miniature air pump, an air outlet hole, an outer-layer glass shade, a heating hole, an inner-layer conical glass shade, a fish-egg channel, a miniature air vent, a top cover and an air vent.