64 results about "Bacterial pollution" patented technology

The invention discloses a fermentation humidifying culture device for biological colony synthesis, and relates to the technical field of fermentation humidifying culture devices.The fermentation humidifying culture device comprises a first box body, a water storage tank is installed at the top of the first box body, a heating box is installed at the top of the water storage tank, and a third water passing pipe is installed at the output end of the front face of the water storage tank; and a second electromagnetic valve is installed at the output end of the third water passing pipe, a water pump is installed at the top of the first box body, and a fourth water passing pipe is installed at the output end of the water pump. Water can be heated and sterilized through the heating box, so that the situation that bacteria in water pollute bacterial colonies and affect growth of target bacterial colonies when external water enters the first box body for humidification can be avoided, and fan blades are driven by a motor to rotate to convey air in the first box body into the heating box for steam sterilization; and meanwhile, water vapor in the heating box can enter the first box body, sterilization of the inner wall and the plate body of the first box body is achieved, and pollution of infectious microbes to normal bacterial colonies is reduced.

The application discloses a sealing transportation mechanism of a combined cover. The combined cover can be turned over for transportation, dust and bacteria carried by the combined cover are avoided from polluting the liquid medicine, and the structure is simple and convenient to use. The sealing transportation mechanism comprises a linkage production line, a plug pressing area and a turnover area are arranged on the linkage production line in parallel, the plug pressing area and the turnover area are arranged at the rear end of a track platform and are arranged in parallel with the track platform, a plug pressing assembly for pressing the combined cover is arranged on the plug pressing area, and a turnover assembly for turning over the combined cover is arranged on the turnover area.

The application discloses a low-temperature storage system for biological pesticides, which comprises a storage box body, a switch door arranged at the lower end of the storage box body, a storage mechanism arranged in the storage box body and used for supporting a pesticide bottle tray, and a transfer mechanism arranged at the left side of the storage mechanism and used for transferring the pesticide bottle to the supporting mechanism; when the pesticide bottles are stored, the switch door is opened, the transfer mechanism takes the tray filled with the pesticide bottles and places the tray into the storage mechanism, automatic placement of the pesticide bottles is realized, labor intensity is reduced, manual intervention is reduced, and bacterial pollution is prevented.

The invention relates to the technical field of coatings, and discloses a high-adhesion and high-hardness modified epoxy coating for a PC glass plate and a preparation method of the high-adhesion and high-hardness modified epoxy coating. The epoxy coating is prepared from the following raw materials in parts by weight: 20 parts of epoxy resin, 10-20 parts of modified epoxy resin, 15-20 parts of a curing agent, 1-3 parts of modified attapulgite, 2 parts of polycarbonate resin, 0.5-1 part of a dispersing agent, 0.1-0.5 part of a coalescing agent, 0.2-0.4 part of a defoaming agent and the balance of deionized water, the prepared epoxy coating has excellent mechanical properties, has good bonding performance with a PC glass plate, has long-acting antibacterial performance when being applied to the PC glass plate, and can hinder bacterial pollution.

The invention relates to an auxiliary device for taking microneedle patches, which comprises a shell, and a top cap assembly, a suction cup assembly and a grabbing assembly which are mounted in the shell, the top cap assembly and the shell form a moving pair, and the suction cup assembly comprises a connecting rod and a suction cup; the top cap assembly is provided with an air inlet hole and makes contact with one end of the connecting rod when pressed to the set length, the other end of the connecting rod is connected with the suction cup, and the air inlet hole communicates with the suction cup through a first through hole in the connecting rod. The grabbing assembly comprises a supporting part and a hook claw. The supporting part sleeves the outer side of the connecting rod, and the hook claw is rotatably installed on the side, close to the suction cup, of the supporting part. Compared with the prior art, the device has the advantages that the hook claws mechanically grab the microneedle patches, so that physical damage to the microneedles can be avoided, and the microneedle patches can be prevented from being polluted by bacteria on hands due to the fact that the microneedle patches are not manually contacted; and the device is small and portable as a whole, is simple to operate, and can be widely used for taking patches in various fields.

The invention discloses a curved disinfection temperature control water supply device for animal husbandry and veterinary medicine, and relates to the technical field of animal husbandry water supply, the curved disinfection temperature control water supply device comprises a water supply assembly, the inner side of the water supply assembly is provided with a filter assembly, the bottom of the water supply assembly is provided with a circulation assembly, and a heating assembly is arranged between the water supply assembly and the circulation assembly; a disinfection assembly is arranged on the outer side of the water supply assembly, an activated carbon filter layer is mounted at the top of the filter assembly, and quartz sand is mounted at the bottom of the activated carbon filter layer. Through the activated carbon filter layer, primary filtration can be carried out when a water source is supplied into the water supply assembly, meanwhile, the water source permeates into quartz sand to be further filtered, and then purification treatment is carried out through filter cotton, so that the quality of the water source is improved in a multi-filtration treatment mode; the healthy water using effect of the livestock is guaranteed, bacterial pollution inside a water source is reduced, and the situation that the livestock gets ill due to water source pollution is effectively prevented.

The application relates to the technical field of orthopedic repair material preparation, and discloses a sterile preparation and injection device for autologous red blood cell drug-loaded blood gel, which comprises a cross bolt mixer, a multimodal injector combined with a composite syringe and a mixing flow channel, the cross bolt is internally integrated with a microfluidic mixing channel, a vertical shaft direction and a coronal shaft direction are respectively connected with a main injector and a drug-loaded injector, when the red blood cell-rich plasma enters the bolt, longitudinal shear force is generated through a spiral flow channel, so that bone morphogenetic protein suspension is vertically injected into a main flow channel through a one-way valve structure, equal ratio mixing of 4:1 is realized in the spiral channel, and the whole mixing process is completed in a closed system. The device has the advantages of realizing accurate and uniform mixing of the red blood cell-rich plasma and the drug in a sterile environment, reducing the risk of bacterial contamination, being capable of directly injecting and filling bone defects for the prepared blood gel, being excellent in biological safety and compatibility, and being low in preparation cost and simple in process.

The present application relates to the technical field of pet products, and provides a pet fresh food dining device, which comprises a shell, a conveyor belt and a cutting device. The shell comprises a base and an upper cover, the upper cover is rotationally connected with the base, the base comprises a dining area and a recycling area, the upper cover is provided with an avoiding hole corresponding to the dining area, and the recycling area is provided with a containing space; one end of the conveyor belt is wound around a reel, the other end of the conveyor belt sequentially passes through the dining area and the recycling area, and the other end of the conveyor belt extends into the containing space; the cutting device is arranged at the entrance of the containing space, the cutting device comprises a shielding part and an execution part, the shielding part can move to the side where the conveyor belt is located with the execution part, and when the execution part cuts the conveyor belt, the shielding part closes the opening of the containing space. In this way, the recycling area can recycle the conveyor belt with fresh food residues in time, and the conveyor belt is closed and stored, so that the peculiar smell emitted by the conveyor belt is prevented from spreading, and the bacteria pollution of the whole conveyor belt is prevented, which is not conducive to the diet health of pets.

The invention discloses an improved beef cattle breeding device and method for animal husbandry, and relates to the technical field of animal husbandry, the improved beef cattle breeding device for animal husbandry comprises a plant and a cleaning device for cleaning excrement of beef cattle in the plant, the transmission motor is fixedly mounted at the bottom of the plant; the bottom box is fixedly installed at the bottom of a plant, a reciprocating lead screw is fixedly installed at the output end of the transmission motor, a moving block is installed on the circumferential face of the reciprocating lead screw in a threaded mode, a scraping plate is fixedly installed at the top of the moving block, and an arc plate is pushed through the scraping plate to trigger a semicircular block to vibrate; the excrement adhering to the connecting plate is shaken off to the liquid box, the excrement is prevented from remaining in the device, the problems that bacteria are bred due to the remaining excrement, and the beef cattle growth environment is polluted are solved, and a clean space condition is provided for beef cattle improved variety breeding.

The invention discloses a laboratory nucleic acid pollution multi-connected detection device, and belongs to the technical field of molecular biology detection. The device comprises a micro-fluidic chip module, an isothermal amplification module, a multi-channel detection module and an intelligent control module. The micro-fluidic chip module adopts a three-layer composite structure and comprises a sample layer, a reaction layer and a waste liquid layer, the reaction layer is provided with six independent reaction cavities, and LAMP primer combinations and fluorescent probes for plasmid DNA, PCR products, genome DNA, RNA, bacterial pollution and internal reference control are pre-packaged in the reaction layer. The isothermal amplification module adopts a film heating element and a PID control circuit, and the working temperature is 63 DEG C. And the multi-channel detection module is provided with six independent fluorescence detection channels. According to the invention, the whole process integration of sample treatment and nucleic acid detection is realized, the detection time is less than 30 minutes, the detection sensitivity reaches 10 copies per microliter, the weight of the whole machine is less than 3 kilograms, and the method can be widely applied to rapid detection of nucleic acid pollution of laboratory environments, instruments and equipment and experimental consumables.

The utility model provides a clean pipeline drying and anti-bacteria device, which relates to the technical field of pipeline drying and anti-bacteria and comprises a drying box, a drying cavity of a pipeline is arranged in the drying box, a fan is arranged at the upper end of the outer wall of the drying box, an air inlet of the fan is connected with a filter, an air outlet of the fan is connected with a pipeline heater, and the pipeline heater is connected with a pipeline. A pipeline containing mechanism is arranged in the drying box, and a plurality of pipelines to be dried are vertically arranged on the pipeline containing mechanism. The fan is matched with the pipeline heater, hot air is reasonably distributed through the wind scooper, and the pipeline is heated from the top and the bottom of the drying cavity at the same time, so that the pipeline is heated uniformly, and the drying efficiency is improved. The filter ensures that air entering a system is clean, pollution of impurities such as dust to a pipeline is reduced, meanwhile, hot air has a sterilization function to a certain extent, the pipeline is prevented from being polluted by bacteria in the drying process, and the cleanliness of the pipeline is ensured.

The utility model relates to a chicken feeding trough which is characterized by comprising a feeding trough body (11), two sides of the feeding trough body (11) are respectively provided with a drinking trough body (12), the feeding trough body (11) is connected with a feeding cover body (21), two sides of the feeding cover body (21) are respectively provided with a plurality of feeding ports (22), and the top of the feeding cover body (21) is provided with a plurality of anti-treading thorns (25) to prevent poultry from standing on the feeding cover body (21). The anti-treading thorns are arranged on the cover body, so that excrement of poultry cannot fall on the food cover body and cannot fall into feed in the food trough body, and potential bacterial pollution cannot be caused.

The utility model belongs to the technical field of medicament production, and particularly relates to a medicament stirring device which comprises a bottom plate, the top of the bottom plate is fixedly connected with a fixed plate; a mixing barrel is mounted in the middle of the fixed plate; a cover plate is mounted at the top of the mixing barrel; a first fixing groove is formed in the bottom of the cover plate; the top of the mixing barrel is inserted into the middle of the first fixing groove; a second fixing groove is formed in the middle of the cover plate; fixing blocks are installed on the two sides of the second fixing groove. The end parts of the two fixing blocks are fixedly connected with a connecting plate; the top of the connecting plate is fixedly connected with a motor; the output end of the motor penetrates through the middle of the connecting plate; the output end of the motor is fixedly connected with a stirring shaft; by means of the structure, the stirring shaft and the multiple stirring blades are independently taken out after stirring is completed, cleaning and disinfection treatment can be conveniently conducted on the stirring shaft and the multiple stirring blades, gaps and corners, difficult to touch, on the surface are effectively cleaned, and bacterial pollution caused by residues on the surfaces of the stirring shaft and the stirring blades is reduced.

The utility model discloses an automatic door lock opening and closing device of a dish-washing machine and the dish-washing machine. An automatic door lock opening and closing device of a dish-washing machine comprises a door lock and a latch, the door lock and the latch are installed on a box body and a door cover of the dish-washing machine respectively, the door lock can elastically clamp a latch head through a grabbing and clamping mechanism so as to be combined with the latch, and the grabbing and clamping mechanism is driven by a push rod to stretch out and draw back. The phenomena of bacterial contamination and insect climbing-in caused by the fact that the door cover is normally opened can be effectively avoided, the door has the advantages of being reliable in sealing performance and small in door closing force, and user experience is better.

The invention discloses a microbial fertilizer production process and equipment, and the process comprises the following steps: S1, stage conditioning pretreatment: crushing and screening basic raw materials of a microbial fertilizer until the particle size is 20-40 meshes, uniformly mixing and dividing into two parts, adjusting the humidity of the first part of raw materials to 55-65% and the pH value to 6.5-7.5, and carrying out low-temperature pre-fermentation for 1-2 hours; the humidity of the second part of raw materials is adjusted to 45-50%, and the pH value is adjusted to 7.0-8.0 for standby application; the temperature of the low-temperature pre-fermentation material is controlled to be 25-30 DEG C, sterile air is introduced in the whole process, and the raw materials are prevented from being mildewed. The process is efficient, the equipment structure is reasonable, continuous and high-quality production of the microbial fertilizer can be achieved, rotation interference and infectious microbe pollution are avoided, the production efficiency and the finished product quality are improved, and the industrial application prospect is good.

The utility model belongs to the technical field of test tube fixing frames, particularly relates to a test tube fixing frame for a clinical laboratory, and aims to solve the problems that although an existing test tube is sealed by adopting a sealing plug, the test tube is still exposed outside, the hands are polluted by bacteria when medical personnel hold a test tube shell by hand, and the sealing plug is touched, so that the test tube cannot be damaged. In order to solve the problem that bacterial contamination still exists, the utility model provides the following scheme that the device comprises a base, and four universal wheels are arranged at the bottom of the base; the height adjusting mechanism is mounted at the top of the base, a supporting circular plate is mounted at the top of the height adjusting mechanism, and two push handles are mounted on the outer side of the supporting circular plate; and a test tube holder. Through cooperation of the sealing cover and the supporting circular plate, the test tube is sealed, the dustproof protection effect is achieved, the outer side of the test tube is prevented from being polluted, the taking and placing height of the test tube can be adjusted, the test tube placing base drives the annular block to rotate on the inner wall of the annular groove, the taking and placing position of the test tube can be adjusted, and use is convenient.

The utility model provides a kind of biological culture water replenishing device, including base, shallow water tray, water storage box, pump water subassembly and time control switch, the base is equipped with slot, the top of the slot is equipped with water outlet end head;Shallow water tray is inserted in the slot, and is placed below the water outlet end head;Water storage box is installed on base, for store pure water;Pump water subassembly is set in base, and have pumping end and water supply end, the pumping end is inserted in the inboard of the water storage box, the water supply end is connected with the water outlet end head by check valve.The utility model provides to avoid external bacterial pollution independent water storage space under the one-way flow circulation closure of check valve, with pump water subassembly, to time control switch timing quantitative shallow water tray is watered, can effectively prolong the use time of single water storage, reduce the frequency of water addition, and, with shallow water tray to surface layer water storage evaporation water replenishing, maintain shallow water evaporation.

The application belongs to the technical field of first-aid appliances, and particularly relates to an emergency patient wound cleaning device, which comprises a cleaning liquid tank, a suction pump fixed to the upper surface of the cleaning liquid tank, a liquid inlet pipe fixed to the output end of the suction pump, and a cleaning mechanism installed on one side of the cleaning liquid tank. The input end of the suction pump and the interior of the cleaning liquid tank are connected through a water pipe. The cleaning mechanism can clamp and fix the wound part of the patient's leg, avoid secondary damage to the blood vessels, tissues, nerves and the like around the wound of the patient in the subsequent cleaning process, clean the wound part of the patient's leg, flush the bloodstains, sand or other foreign matters such as dirty soil in the wound, prevent bacterial pollution caused by long-time exposure of the wound from aggravating the wound infection, quickly and uniformly extract the bloodstains and cleaning liquid generated in the wound cleaning process, and prevent the bloodstains and cleaning liquid from splashing out and causing pollution of the rescue area.

The utility model discloses a square base material settling type filling machine, and belongs to the field of base material production. A square backing material settling type filling machine comprises a workbench with a front-back through cavity, a conveying table is arranged in the cavity of the workbench, a stirring and heating mechanism is arranged on the workbench, a filling head is connected to the conveying table in a lifting mode and communicated with the stirring and heating mechanism through a metering pipe, and a collecting mechanism is arranged on the end face of the conveying table. The working end of the filling head faces a collecting cavity of the collecting mechanism; according to the utility model, accurate sinking type filling can be realized, the splashing of the backing material is effectively prevented, the cleanness and sanitation of the filling process are ensured, the automatic backing material filling is further realized, the problems of bacterial pollution and foreign matter mixing are prevented, and the product quality and the brand reputation are ensured.

The invention relates to the field of packaging materials, in particular to an antibacterial polyolefin packaging material for biological essential oil and a preparation method of the antibacterial polyolefin packaging material, and aims at solving the problems that an existing polyolefin packaging material is poor in antibacterial performance and oleophobic anti-sticking performance, and the biological essential oil is prone to deterioration. The polyolefin packaging material has excellent barrier property and mechanical property, the antibacterial property of the polyolefin packaging material can be remarkably improved after the modified silver-doped zinc oxide is added into the polyolefin packaging material, and growth and reproduction of bacteria and fungi on the surface of the packaging material can be effectively inhibited, so that the biological essential oil is prevented from being polluted by the bacteria, and the freshness and quality of the biological essential oil are ensured; the packaging material can be endowed with good oleophobic and anti-sticking performance, adhesion and infiltration of the biological essential oil to the packaging material are effectively reduced, waste and impurity introduction of the biological essential oil in the packaging process are prevented, the purity and stability of the biological essential oil are guaranteed, and efficient antibacterial protection and long-acting storage of the biological essential oil are achieved.

1. The name of the design product: Laying cloth (with a transparent window that can be opened). 2. The use of the design product: Isolate the operation area to reduce the risk of bacterial contamination, with a transparent part that can be opened to observe the internal bleeding. 3. The design points of the design product: In shape. 4. The picture or photo that best indicates the design points: Perspective drawing.

The utility model relates to the technical field of ice cups, and discloses a portable ice cup which comprises a cup body, a fixing ring is arranged on the top of the outer wall of the cup body, a top cover is arranged on the top of the fixing ring, a silica gel suction nozzle is arranged on the top of the top cover, a connecting rod is fixed to one end of the fixing ring, and a handle is fixed to one end of the connecting rod. A placing groove for placing the silica gel suction nozzle is formed in the handle, an ejection mechanism for conveniently taking the silica gel suction nozzle is arranged at the bottom of the placing groove, and a limiting mechanism for limiting the ejection mechanism is arranged at the bottom of the handle. According to the utility model, the silica gel suction nozzle can be effectively prevented from being polluted by external bacteria, so that the use sanitation is improved, the silica gel suction nozzle can be conveniently and quickly taken out by a user through the pulling block and the moving block when the silica gel suction nozzle needs to be used, the operation convenience is improved, and the silica gel suction nozzle can be effectively stored and protected, so that the cleaning frequency is reduced, and the cleaning efficiency is improved. And the user can use the device more conveniently in daily life.

The utility model belongs to the technical field of bean product production, and particularly relates to a stinky tofu blank mold shaping device which comprises a bottom plate and a square cylinder plate arranged on the bottom plate, a forming plate is arranged on the square cylinder plate through a clamping assembly, and a pressing assembly is arranged above the forming plate. The pressing assembly comprises limiting rods fixed to the four corners of the upper end of the square cylinder plate, a pressing plate is slidably mounted on the limiting rods, a pressing part is arranged at the bottom of the pressing plate, threaded rods are fixed to the front side and the rear side of the upper end of the square cylinder plate correspondingly, and the threaded rods are slidably connected with the pressing plate. The threaded rod is in threaded connection with a first positioning nut and a second positioning nut, the first positioning nut is located above the pressing plate, and the second positioning nut is located below the pressing plate. The device has the advantages that water slurry generated after pressing can be discharged in a unified mode by arranging the drainage mechanism and the water leakage holes, the situation that the water slurry flows to the ground to breed bacteria and pollute the environment is avoided, and the food safety is improved.

The invention relates to the technical field of medical supplies, in particular to a medical peritoneal dialysis waste liquid collecting and discharging machine which comprises a machine body, a waste liquid treatment assembly and a flushing assembly. A waste liquid inlet is formed in the side face of the machine body. The peritoneal dialysis waste liquid is mechanically treated, so that the peritoneal dialysis waste liquid is prevented from volatilizing in the air to cause bacterial pollution in the air and the environment; secondary pollution caused when patients and medical staff in hospitals treat the waste liquid is avoided; and a clean and tidy doctor-seeing and working environment is created for patients and medical staff.

This invention proposes a method for controlling bacterial contamination in potato seedlings based on sugar-free culture, relating to the field of potato tissue culture technology, including the following steps: S1, preparation of nano-loaded vermiculite matrix. This invention solves the technical problems of easy bacterial growth in sugar-containing potato seedling culture, incomplete sterilization in conventional sugar-free culture, and poor microenvironment control. Under optimal conditions, the bacterial contamination rate is controlled below 1.2% throughout the entire culture cycle. Optimal parameters are screened through orthogonal experiments, and the synergistic effect of the whole-cycle control technology activates the photosynthetic autotrophic capacity of seedlings, significantly improving agronomic traits. Compared with traditional sugar-containing culture, the yield, quantity, and physiological survival rate of potato seed stock are increased by 12.35%, 16.78%, and 5.82%, respectively. Intelligent microenvironment control is adapted for industrialized propagation, and the raw material cost of nano-loaded vermiculite matrix is ​​reduced by 28.6% compared with traditional agar culture medium.

The utility model discloses a longya lily instant noodle processing block cooling device, and relates to the field of instant noodle processing, the longya lily instant noodle processing block cooling device comprises a cooling box body, the top of the cooling box body is provided with a cooling mechanism, and one side of the cooling box body is provided with a clamping mechanism; a cooling mechanism; comprising an air inlet box fixedly mounted at the bottom of a cooling box body. According to the instant noodle cooling device, under the action of the cooling mechanism, air generated when instant noodles are cooled can be conveniently filtered, operation of the exhaust fan is controlled, the exhaust fan draws the air from the air inlet square pipe to the air outlet pipe, at the moment, when the air passes through the filter plate, bacteria in the air are filtered, and at the moment, the air flows from the air inlet square pipe to the inner cavity of the cooling box body; when the instant noodles are cooled, air takes away the temperature in the instant noodles, the air enters an air guide block when moving upwards again, finally, air with high humidity is exhausted from an air outlet pipe, the function of filtering the air needed during cooling can be achieved, and it is guaranteed that the instant noodles cannot be polluted by bacteria.

The utility model relates to the field of rear covers of mobile phones, and discloses an antibacterial ultrafiltration membrane assembly for a rear cover of a mobile phone, which comprises an antibacterial modification layer, a first antibacterial layer is arranged above the antibacterial modification layer, an ultrafiltration membrane separation layer is arranged at the top end of the first antibacterial layer, a supporting layer is arranged at the top end of the ultrafiltration membrane separation layer, and a second antibacterial layer is arranged at the top end of the supporting layer. Through the arrangement of the antibacterial modification layer, the antibacterial layer I and the ultrafiltration membrane separation layer, the antibacterial ultrafiltration membrane assembly can be widely applied to rear cover protection of mobile equipment such as various smart phones and tablet personal computers, so that bacterium breeding can be effectively prevented, the problems of discoloration, peculiar smell and the like of the surfaces of the mobile phones caused by bacterium pollution are reduced, and the service life of the mobile phones is prolonged. The service life of internal elements of the mobile phone can be prolonged, the maintenance cost is reduced, the protection of consumers on the sanitation and health of the mobile phone is improved, the structure design is compact and reasonable, and the protection of the rear cover of mobile equipment such as an intelligent mobile phone and a tablet personal computer is improved by using a more efficient technology.

The invention discloses a method for identifying bacterial contamination of an inner drum of a washing machine based on trace detection, and relates to the technical field of intelligent household electrical appliance monitoring, comprising the following steps: S1, constructing a four-dimensional state point sequence; s2, constructing a Gaussian mixture model fingerprint database; s3, outputting a topology metric value; s4, inputting the four-dimensional state point sequence into an improved FlowFormer model, analyzing nonlinear dynamic characteristics of bacterial growth based on optimal transmission path regularization probability distribution transformation, and extracting a trajectory tangent space basis vector; s5, extracting a principal curvature direction and an evolution rate parameter of the nonlinear trajectory of the manifold submerged space in a space-time dimension; s6, outputting the updated Gaussian mixture model fingerprint database and the corresponding translation compensation vector; and S7, matching relative topological positions. The method overcomes the limitation that a traditional method is low in signal-to-noise ratio, difficult in biological activity detection and neglected in evolution trend, and an efficient solution is provided for precise sterilization of the intelligent washing machine.

The utility model belongs to the technical field of tooth cleaning instruments, and particularly relates to a tooth cleaning machine water quantity control mechanism which comprises a support, a switch body, a driving assembly and a piston needle, the switch body and the driving assembly are installed on the support, the switch body is provided with a water inlet pipe and a water outlet pipe, and the piston needle is in running fit with the switch body. The first end of the piston needle is in transmission connection with the driving assembly, and the second end of the piston needle is in clearance fit with the water inlet pipe; the piston needle is driven by the driving assembly to rotate so as to adjust the gap between the piston needle and the water inlet pipe, and then the water inlet flow of the water inlet pipe is controlled. The water inlet flow adjusting mechanism can automatically adjust water inlet flow, is simple in structure and convenient to operate, can be arranged in a box body of the dental descaler, does not need manual operation, and can prevent the interior of the dental descaler from being polluted by bacteria.

The invention discloses a solid fermentation tank with a drying function and a use method thereof. The solid fermentation tank comprises a tank body, an in-situ sterilization unit and a low-temperature drying unit, the tank body is of a sealed pressure-bearing structure, a solid material intercepting assembly is fixedly arranged at an exhaust port of the tank body, the tank body is coated with a jacket, the bottom of the jacket is in through connection with a heating medium conveying pipeline, and a heat exchange strengthening part is assembled in the pipeline; the in-place sterilization unit comprises a temperature control heating module and a sampling pipeline, the temperature control heating module and the jacket form a temperature linkage control unit, and one end of the sampling pipeline is communicated with the jacket. The functions of fermentation, in-situ sterilization and low-temperature drying are integrated, additional purchasing of drying equipment and laying of conveying pipelines are not needed, equipment investment and site occupation are reduced, and the operation and maintenance cost is reduced; fermentation and drying are completed in the same sealed tank body, an intermediate conveying link is omitted, materials are prevented from remaining in a pipeline, cleaning difficulty is lowered, infectious microbe pollution caused by contact between the materials and the outside is eradicated, and product quality is guaranteed.