377 results about "Closed tube" patented technology

The invention discloses a medical developing marker and a manufacturing method thereof, and relates to the field of medical instruments, the medical developing marker comprises a closed tube, the outer wall of the closed tube is provided with a bionic barb structure, the bionic barb structure is distributed in a flexible zigzag convex manner, and the bionic barb structure and the closed tube are integrally formed through an injection molding process; a closed cavity is arranged in the closed tube, four developing strips are symmetrically arranged in the tube wall of the closed cavity, the tube wall of the region where the developing strips are located is etched to form a weak band, and a developing material layer and a sustained-release medicine layer are sequentially deposited at the weak band. The developing material layer and the sustained-release drug and / or marked nano-particle layer are alternately deposited to form a functional composite layer, and the functional composite layer can directionally rupture to release the therapeutic drug under the action of implantation pressure. The marker integrates the functions of precise development, tissue anchoring and drug sustained release, is adaptive to multi-mode imaging such as ultrasonic imaging, X-ray imaging, CT imaging, MRI imaging and PET-CT imaging, and has remarkable clinical value in precise positioning treatment of solid tumors such as breast cancer and liver cancer.

The invention relates to the field of medical instruments, in particular to a rectum protection device used after an intestinal tract operation. The rectum protection device used after the intestinal tract operation comprises a closed tube and a drainage tube matched with the closed tube. Wherein a plurality of groups of iron powder are arranged in the closed pipe in the direction of the rotation axis, and each group of iron powder is distributed at equal intervals; one end of the drainage tube is connected with an attraction head, a plurality of magnetic powder is installed on the outer side of the attraction head, and the iron powder and the magnetic powder attract each other. According to the rectum protection device used after the intestinal tract operation, the sealing pipe is arranged and designed to be the air bag of the hollow structure, objects in the rectum can flow conveniently, the wound of the rectum is prevented from being polluted, the rectum protection device can adapt to the shape of the rectum through expansion of the air bag, the better fitting degree is provided, and the sealing effect is good. Stimulation to the inner wall of the rectum can be effectively reduced, and the comfort level of a patient is improved.

The invention discloses an integrated heat exchanger which is applied to a launching device, the launching device comprises a launching cylinder, the heat exchanger comprises a plurality of heat exchange pipes, and the heat exchange pipes are distributed in the cylinder wall of the launching cylinder in the circumferential direction; the heat exchange tube comprises a condensation section, a heat insulation section and an evaporation section which are sequentially connected to form a closed tube cavity, and the tube diameter of the closed tube cavity is gradually reduced in the direction from the condensation section to the evaporation section; a liquid absorbing core is arranged on the inner wall of the closed pipe cavity, a working medium capable of conducting phase change between the gas state and the liquid state is contained in the closed pipe cavity, and the liquid absorbing core can absorb the liquid working medium and guide the liquid working medium to flow from the condensation section to the evaporation section. The heat generated by the unmanned aerial vehicle at the front part of the transmitting tube due to friction can be collected and used for heating the cavity at the tail part of the transmitting tube, so that carbon dioxide is prevented from desublimating into a solid, the temperature of the transmitting tube is balanced, and the structural integrity of the transmitting tube is ensured. The invention further provides a parameter determination method, a starting transmitting device, electronic equipment and a computer readable storage medium.

The present invention provides a low-cost, non-invasive device (100) for measuring flow and leakage detection of fluids within closed conduits. The invention utilizes affordable a Micro-Electro Mechanical System (MEMS) based Inertial Measurement Units (IMUs) sensor (102) in the device to non-invasively measure fluid flow and leakage of fluids which exhibit turbulence or flow-induced-vibrations within a conduit. This device fin directly estimates flow rate or velocity based on the concept of Reynolds number in fluid dynamics. Further, this device is easy to install on pipes of all dimensions, requires minimal calibration, has no moving parts in contact with the fluid, can be integrated with Geographic Information System (GIS) software, and possesses advanced metering infrastructure to support remote reading and automated bill generation.

The invention relates to a fan circulation type testing device which comprises a frame, the frame is provided with a pipeline and a fan, the pipeline is a circulation loop, one end of the pipeline is connected with an air inlet of the fan, the other end of the pipeline is connected with an air outlet of the fan, the pipeline is provided with an air inlet and an air outlet, the frame is provided with a differential pressure transmitter, and the differential pressure transmitter is provided with two pressure guide pipes. The two pressure guide pipes are respectively communicated with an air inlet and an air outlet of the fan, the pipeline is provided with a regulating valve and a pressure transmitter, and the pipeline is provided with a plurality of temperature sensors. The testing method of the fan circulating type testing device has three working condition types: normal temperature testing, and heating and humidification not being started; high-temperature test: starting heating without starting humidification; and carrying out high-temperature humidification test, and starting heating and humidification. Test is carried out in a closed pipeline, the problem of treatment before combustible gas emission can be avoided, and the problem of high-temperature gas emission can also be avoided.

The invention provides a coal mine fire early warning assistant defense joint control intelligent management and control platform, and relates to the technical field of coal mine safety detection. The platform is applied to a goaf equipped with a nitrogen making machine, and comprises a data acquisition layer, a data processing layer, a communication control layer, a monitoring and early warning layer and a data visualization layer, the platform collects the fluid flow in a closed pipeline in a goaf, the environment temperature of the goaf, the pressure of different working faces in a coal mine and the pressure of the position where each valve of the nitrogen making machine is located in real time, integrates all the collected data, compares and analyzes the integrated data with a set threshold value range, and if the analysis result is normal, the nitrogen making machine is started. If yes, the current operation state of the nitrogen making machine in the goaf is maintained; if the analysis result is abnormal, the nitrogen making machine is controlled to open a valve to inject nitrogen into the goaf for fire extinguishing until the analysis result becomes a normal position, and nitrogen injection is automatically stopped. The spontaneous combustion risk of the goaf can be effectively prevented and controlled, and the overall safety management level of a coal mine can be improved.

There is disclosed a bag having a tubular body with a top open end and a bottom closed end. The tubular body has a larger open diameter at the top open end. The tubular body narrows into a narrower open diameter adjacent to a bottom closed end. The tubular body in a flattened two-fold condition has a pair of side edges extending from a top edge to a bottom edge. The top edge delimits the top open end. The bottom edge delimits the bottom closed end. The pair of side edges are generally parallel to one another in a first portion adjacent to the top edge.

The utility model discloses a building engineering foundation pit monitoring device which comprises a monitoring platform flush with the top of a pit, a bottom plate close to or attached to the bottom of the pit is arranged under the monitoring platform, a closed pipe and an open pipe which vertically extend up and down are arranged between the bottom plate and the monitoring platform, and an opening is formed in the side face of the open pipe. A first rope hole formed in the monitoring platform is formed in the top of the closed pipe, a second rope hole formed in the monitoring platform is formed in the top of the open pipe, a wheel frame is arranged on the monitoring platform, a rope guide wheel is rotationally connected to the wheel frame, and a test rope with one end penetrating through the first rope hole and the other end penetrating through the second rope guide wheel is in transmission connection to the rope guide wheel. Scale marks are arranged on the testing rope, one end of the testing rope is connected with a balance weight piece arranged in the closed pipe, the other end of the testing rope is provided with a floating block arranged in the open pipe, and the mass of the floating block is larger than that of the balance weight piece. The foundation pit monitoring device has the characteristics of mechanical measurement and real-time measurement, and is complete in overall function and high in practicability.

An attachment for a mobile construction machine, in particular a wheel loader, for transporting and changing the position of drilling tools and drill pipes, comprising a base plate (1), a cylindrical, open pipe (2) arranged vertically on the base plate and connected thereto for receiving a drilling tool (3) or drill pipe, and a connecting device (6, 7) for connecting the attachment to a mobile construction machine, wherein - the cylindrical tube (2) is connected to the base plate (1) at one of the two tube ends, so that the latter partially or completely closes the tube end, and the opposite tube end is open, - the inner diameter (d) of the cylindrical tube (2) is selected so that the drilling tool (3) or drill pipe can be inserted through the open pipe end, - the cylindrical tube (2) has a slot (5) extending in its longitudinal direction, the width (b) of which is smaller than the diameter of the drilling tool (3) or drill pipe, - the connecting device (6, 7) is arranged on the side of the pipe circumference opposite the slot and is connected to the pipe (2) and / or the base plate (1).

The utility model provides a disposable tube sheath and an endoscope assembly. The disposable tube sheath comprises a tube body and a flexible light-transmitting piece, the tube body is provided with an insertion channel used for allowing an endoscope tube of an endoscope to be inserted, and the flexible light-transmitting piece seals a far-end opening of the tube body. The flexible light-transmitting piece can deform when the endoscope tube is inserted into the insertion channel and abuts against the flexible light-transmitting piece, so that the flexible light-transmitting piece is attached to the endoscope, the attaching degree of the flexible light-transmitting piece and the endoscope is improved, a gap between the far end of the endoscope and the inner side face of the tube sheath is reduced or even eliminated, and the imaging quality is improved. Moreover, the flexible light-transmitting piece is not directly processed and fixed with the tube body, but is fixedly connected to the tube body through the fixing piece, so that the processing difficulty is reduced.

The invention discloses a primer group, a kit and a method for rapidly and visually detecting silver salmon components, belongs to the technical field of nucleic acid detection of marine fish products, and particularly relates to a method for rapidly and visually detecting the silver salmon components by using an LAMP (loop-mediated isothermal amplification) technology. The invention provides a primer combination suitable for rapid nucleic acid detection and a corresponding kit, the primer combination comprises an outer primer pair and an inner primer pair, and the kit integrates the primer combination and an optimized LAMP reaction mixed solution. The detection means has a plurality of prominent characteristics that during detection, only DNA of a sample to be detected needs to be added into an LAMP reaction mixed solution prepared in advance, and the detection work can be carried out by means of common constant-temperature equipment. After the whole detection process is about 60 minutes, the result interpretation can be completed by observing the color development condition with naked eyes, and when the reaction mixed solution is yellow, the reaction mixed solution is judged to be positive; and if the color is red, determining that the color is negative. Due to the design of closed tube detection, the hidden danger of aerosol pollution caused by uncovering operation is effectively avoided. The method is excellent in specificity and relatively high in detection sensitivity, and can detect 10 <-1 > ng of genome DNA or a sample with the mass fraction of 1% at least. The method has the advantages of good result reproducibility, simplicity and convenience in operation and low cost. The method is particularly suitable for being applied to scenes with relatively limited resources such as basic units and field detection, the cost investment in the aspect of supervision can be remarkably reduced, and the efficiency of detection work is improved.

Apparatus and methods are provided for closing a tubular structure within a patient's body, e.g., a varicose vein. In one example, the apparatus includes an outer member including a cannula and an inner member carrying a pusher member slidably received within a lumen of the cannula. The cannula is inserted into the patient's body into-and-through the vein, the cannula carrying a clip within the lumen including proximal and distal tines in a stressed state and a filament coupled to one of the proximal tines. The inner member is advanced relative to the outer member to advance the pusher member to expose the distal tines from the distal tip beyond the tubular structure, whereupon the distal tines elastically deform towards a relaxed state at least partially around the tubular structure. A release member coupled to the filament is disengaged to disengage the filament from the proximal tine, and the cannula is withdrawn such that the proximal tines are released and elastically deform to at least partially surround and close the tubular structure.

The invention relates to a closure pipe rapid reproduction method and system, and the method comprises the steps: obtaining the space coordinates of all preset point positions of a to-be-closure closure pipe through optical equipment, constructing a three-dimensional model of a reference closure pipe through simulation software, and determining a three-dimensional model of a to-be-reproduced closure pipe required by the reference closure pipe, and the parameters and the pipeline path of the to-be-reproduced folding pipe are further obtained. Virtual butt joint is carried out through analogue simulation to judge whether errors exist or not, after butt joint succeeds, a closed pipe object to be reproduced can be generated according to a three-dimensional model of the closed pipe to be reproduced, and finally butt joint of the closed pipe object to be reproduced is achieved through a cantilever lifting mechanism and a seven-axis posture adjusting mechanism. The to-be-reproduced folding pipe is virtually assembled through analogue simulation, so that the assembly error generated by field manufacturing can be reduced, and multiple reworking caused by pose correction compensation after the folding pipe is manufactured is avoided. And when the three-dimensional model of the to-be-reproduced folding pipe is constructed, virtual operation is carried out, the manufacturing requirement of a complex shape can be met, and the adaptability in production is improved.

The utility model relates to the technical field of venous indwelling needles, and discloses a venous indwelling needle assembly with a soft needle core, which comprises a positive pressure connector, a connector is fixedly connected to one side wall of the positive pressure connector, and an infusion extension tube is fixedly connected to the bottom end of the positive pressure connector. The closed tube can ensure that the soft needle core body is in a sterile state when being pulled out and inserted in, a medical worker communicates the infusion extension tube with the sleeve, puncture liquid medicine or blood is prevented from flowing into the closed tube, the puncture hard needle core is pulled out and discarded after blood return is found, and the liquid medicine in the infusion extension tube enters the blood through the sleeve. When the venous indwelling needle is used, the soft needle core body can be used for blocking and filling the cannula, blood is prevented from flowing back into the indwelling needle during the indwelling period of the venous indwelling needle, thrombus is prevented, and the cannula can be prevented from being blocked due to the fact that the cannula is pressed and collapsed during the indwelling period.

1. The name of the product of this design: Off-line closed-tube X-ray detection equipment. 2. Application of this design product: used for internal defect detection in semiconductor, SMT, automotive parts and other industries. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention relates to the technical field of solid-liquid filtering, in particular to a plastic flexibilizer mixed solid-liquid filtering device which comprises a supporting frame, a filtering piece arranged on the supporting frame, a power piece arranged on the outer wall of the filtering piece and an extrusion piece arranged on the lower portion of the filtering piece. The filtering piece comprises a material storage pipe arranged at the upper part of the supporting frame, and a sealing pipe is arranged at the lower part of the material storage pipe; the power part comprises a U-shaped pipe arranged on the outer wall of the material storage pipe, an ejector rod is arranged at the end of the U-shaped pipe, and an extension plate is arranged on the side wall of the ejector rod. The extrusion part comprises a closed circular plate arranged on the lower portion of the closed pipe, the ejector rod in the extending end of the U-shaped pipe is driven to move upwards through pressure generated when the filtering part is fed, the ejector rod moves upwards to drive the closed circular plate and the silo which are connected with the ejector rod to move upwards to extrude mixed materials inside, and the solid-liquid mixed materials are extruded forcibly to accelerate the filtering efficiency.

The invention belongs to the technical field of biological detection, and discloses a sequence combination for rapidly detecting influenza A based on CRISPR / CAS12a-MIRA and application, the sequence combination comprises an MIRA primer pair (SEQ ID NO: 1-2) of a targeted influenza A virus M gene highly conserved region (M1 fragment), and CRISPR / Cas12a detection probes (crRNA SEQ ID NO: 3 and phosphorothioate modified FAM-biotin probe SEQ ID NO: 4). By optimizing a buffer system (containing PEG 8000 and betaine), MIRA amplification and CRISPR detection are continuously completed in a closed tube at 37-42 DEG C, and a result is output within 30 minutes. The detection sensitivity of the kit reaches 50 copies / [mu] L, the specificity is 100%, and subtypes such as H1N1, H3N2, H5N1 and H7N9 can be covered. Compared with the prior art, according to the scheme, the detection time is shortened by 67%, the probe cost is reduced by 80%, and high anti-interference performance (tolerance to 10% mucoprotein and 5% whole blood) is achieved. The kit is suitable for on-site instant detection of saliva, nasopharynx swabs and environmental samples, and an efficient and portable solution is provided for basic medical institutions and prevention and control of sudden epidemic situations.

Welded connection arrangement (100, 200, 300, 400, 500, 600) for cooled power transmission from an electrical consumer to a storage medium, the welded connection arrangement (100) comprising: a tubular electrical line (110) configured to conduct current, the tubular electrical line (110) comprising a first end (110a) for electrical connection to an electrical load and a second end (110b) for electrical connection to a storage medium, and further configured to receive a coolant for cooling the tubular electrical line (110); an electrically conductive contact member (120) attached to a respective end (110a, 110b) of the tubular electrical conduit (110) for electrically contacting the tubular electrical conduit (110); and a closure plug (130) which is inserted into the tubular electrical line (110) at the respective end (110a, 110b) of the tubular electrical line (110) and is welded to the tubular electrical line (110) together with the electrically conductive contact part (120) in order to close the tubular electrical line (110) against the escape of coolant; wherein the electrically conductive contact part (120) is welded to the tubular electrical line (110) by means of the sealing plug (130) and thus hermetically seals the tubular electrical line (110) against coolant leakage.

This application relates to a heat pipe energy pile and a heat pipe ground source heat pump system and its operation and management method, solving the technical problems of existing ground source heat pumps requiring additional power and consuming high energy, and being difficult to adapt to bidirectional energy supply in winter and summer. The system includes a pile foundation, heat pipes, a heat exchanger, and a heat pump unit. The heat pipe is integrated into the pile foundation and is a closed tube with a capillary wick, vacuumed, and filled with a phase change working fluid. It consists of an evaporation section at the bottom / side of the pile foundation and a condensation section at the top. The evaporation section exchanges heat with the soil, the condensation section is connected to the heat exchanger, and the heat pump ground source side is connected to the heat exchanger. The capillary wick drives the working fluid to flow back autonomously, realizing heat transfer or release. This application has the following effects: it resolves the contradiction between low energy consumption and year-round energy supply in existing technologies, achieves efficient bidirectional energy supply in winter and summer without additional power, and significantly reduces the energy consumption of building cold and heat source systems.

The invention belongs to the technical field of testing and sampling, and particularly discloses a semi-closed tube type static and dynamic triaxial undisturbed sample cutting ring soil sampler. Two ends of an upper joint of the soil sampler are respectively provided with interfaces connected with a drill rod and fixed with a waste soil pipe, and the bottom end of a pipe boot is provided with a cutting edge I; an outer soil sampling pipe of the soil sampling pipe is of a tubular structure formed by buckling two semi-closed pipes, external thread sections are arranged at the two ends of the outer soil sampling pipe respectively, the two ends of the outer soil sampling pipe are in threaded connection with a waste soil pipe and a pipe shoe through the external thread sections, a cutting ring support is of a double-pipe structure formed by buckling two omega-shaped semi-closed pipes, the cross section of the cutting ring support is in a transverse 8 shape, and the cutting ring support can be embedded into the outer soil sampling pipe and is provided with a fixing groove. The cutting ring is of a tubular structure formed by buckling two semi-closed tubes and can be embedded into the fixing groove. The cutting ring support of a semi-closed double-pipe structure is arranged in the soil sampling pipe, and two cutting rings can be fixed through the fixing grooves in the cutting ring support respectively, so that four tailing undisturbed samples can be sampled at a time to meet the requirements of a group of samples for a triaxial compression test, and the device has the characteristics of simple structure, easiness in disassembly and assembly and small disturbance.

The utility model discloses a French universal joint, which belongs to the technical field of universal joints, and comprises a front insertion connecting pipe, and a side extension outer sleeve is arranged on the outer wall of the front insertion connecting pipe in an extending manner; the connector assembly comprises a front extending outer closed pipe, two front connector parts and a rear connector part, the front extending outer closed pipe is arranged on the outer wall of one side of the side extending outer sleeve in an extending mode, and two penetrating grooves are formed in the outer wall of the front extending outer closed pipe. According to the French universal joint, an upper matching block is driven by a side fixing rod to move, a V-shaped extension plate is used for clamping and fixing a front pipeline, a middle adjusting cam is matched with a rear insertion matching pipe, a rear pipeline is clamped and fixed, the fixing effect between the pipeline and the joint is better, meanwhile, the French universal joint can also be matched with more types of pipelines, and the practicability is high. The pipeline fixing device is convenient to mount and dismount, does not damage the pipeline, and is beneficial to long-term use.

The utility model relates to a positioning device for a drainage blind pipe of a tunnel side wall. An existing side wall drainage blind pipe construction method has the problem that the installation quality is difficult to guarantee. The device comprises a blind pipe positioning clamp and an orifice sealing pipe, the blind pipe positioning clamp is of a tubular structure and located at the preset position of the side wall drainage blind pipe within the side wall lining pouring range, and the side wall drainage blind pipe is inserted into the blind pipe positioning clamp and extends into the outer side of the side wall lining pouring range. And the orifice sealing pipe is inserted into the side wall drainage blind pipe from the inner end of the blind pipe positioning clamp. The blind pipe positioning clamp is used for positioning the side wall drainage blind pipe, a traditional simple positioning mode is replaced, so that the installation quality such as slope and orifice elevation control of the side wall drainage blind pipe is guaranteed, welding operation of site positioning steel bars and damage to a side wall arc-shaped formwork are reduced, electric welding sparks are reduced in gas tunnel construction, and the construction efficiency is improved. The safety risk is reduced, meanwhile, the time of the blind pipe positioning procedure is shortened, and the operation cost is reduced.

The utility model discloses efficient stirring and cleaning equipment of a cement paste stirrer, which relates to the technical field of stirring equipment and comprises an assembly box, a feed hopper, a discharge port, an outer pipe and the like. The outer pipe is rotationally connected with the assembly box, the stirring plate is arranged on the outer side face of the outer pipe and inclines downwards, cement can circulate at the bottom and the middle of the container, retention is prevented, and the side scraping plate and the bottom scraping plate are attached to the inner wall and the bottom of the assembly box respectively. A servo motor on the top of the assembly box drives the outer pipe to rotate through an output shaft, an output straight gear and an action straight gear of the outer pipe. During stirring, a closed pipe is inserted into the outer pipe to block the water spraying holes, and the pipe insertion part is used for placing the closed pipe; during cleaning, the closed pipe is taken out, the top of the outer pipe is connected with a pipe joint which is connected with a water pipe, and the pipe joint enables the outer pipe to rotate to spray water for cleaning and can be placed on a pipe inserting part. The equipment can realize efficient stirring, ensures the uniformity of cement paste, is convenient to clean, is prolonged in service life, is convenient to operate, and improves the production quality and efficiency of the cement paste.

The invention discloses a drainage system for saline-alkali soil improvement, and belongs to the technical field of soil drainage. Comprising a drainage pipe buried below a saline-alkali soil layer, a plurality of evenly-distributed water seepage holes are formed in the upper portion of the drainage pipe, U-shaped frames are arranged on the drainage pipe on the outer sides of the water seepage holes, the opening ends of the U-shaped frames are fixed to the drainage pipe, ejector rods are arranged at the closed ends of the U-shaped frames, and the ejector rods are connected to the U-shaped frames in a sliding mode. The outer side of the ejector rod is sleeved with a closed pipe, the end of the closed pipe is fixed to the U-shaped frame, a spring is arranged in the closed pipe, the two ends of the spring are fixed to the end of the ejector rod and the end of the closed pipe respectively, the other end of the ejector rod is located in the drainage pipe, and a rectangular through groove is formed in the lower portion of the drainage pipe. And a U-shaped collecting groove is formed below the rectangular through groove. According to the technical scheme, the problem that when the drainage pipe in the saline-alkali soil is used, water seepage holes formed in the drainage pipe are prone to being blocked, and the drainage effect becomes poor is solved.

The invention belongs to the technical field of angle measurement, and discloses a compact coal mining machine rocker arm angle measuring device based on liquid level sensing, which comprises a closed pipe, a capacitive sensor, a signal processing unit and a main control system, the closed pipe is fixed on a vertical panel of a rocker arm of the coal mining machine, capacitive sensors are symmetrically arranged on the outer side wall of the closed pipe, the capacitive sensors are electrically connected with the signal processing unit, and the signal processing unit is in communication connection with the main control system. According to the technical scheme, stable and reliable monitoring is achieved in swing angle detection of the rocker arm of the coal mining machine, and the actual requirements under the underground operation environment are met.

The invention discloses an adsorption device and a workpiece adsorption method, and relates to the technical field of workpiece adsorption. The adsorption device comprises: an adsorption member; a plurality of gas path channels; m negative pressure generating units; the air path switching module can be used for selectively communicating any air path channel with the air suction port of the corresponding negative pressure generation unit or communicating with the atmosphere or communicating with the closed pipeline; the limit negative pressure absolute value of the Nth negative pressure generating unit is smaller than that of the (N + 1) th negative pressure generating unit; when the air suction port of the Pth negative pressure generation unit is communicated with the air channel, the air channel corresponding to the (P-1) th negative pressure generation unit is communicated with the closed pipeline; and when the air channel corresponding to the (P-1) th negative pressure generation unit is communicated with the closed pipeline, the (P-1) th negative pressure generation unit stops working. The adsorption device is used for avoiding the heat accumulation phenomenon of the negative pressure generation unit on the premise that the adsorption pressure is guaranteed, the service life of the negative pressure generation unit is prolonged, and meanwhile the applicability of the adsorption device is improved.

The invention relates to kitchen waste microbial degradation treatment equipment capable of monitoring a fermentation stage, and belongs to the technical field of kitchen waste resource utilization. The kitchen waste microbial degradation treatment equipment capable of monitoring the fermentation stage comprises a stirring barrel, an electric stirrer and a controller, the electric stirrer is mounted at the top of the stirring barrel, and an output shaft of the electric stirrer penetrates into the stirring barrel; a pH value detection structure with a lifting design is adopted, so that a detection probe can be placed above kitchen garbage when the electric stirrer runs, the garbage is prevented from being wound and wrapped on the surface of a closed pipe in the stirring process, interference on detection of the detection probe is further reduced, and a worker can move the detection probe downwards to a corresponding depth for detection, so that the detection efficiency is improved, and the detection efficiency is improved. Therefore, the pH values of materials at different depths can be correspondingly detected, the monitoring accuracy of the kitchen garbage fermentation stage is improved, and directional conversion from wastes to organic fertilizers is realized.

The invention relates to a composite material pipe fitting pultrusion device based on a self-limiting magnetic suspension core mold. The composite material pipe fitting pultrusion device comprises a base, a raw material disc, a magnetic unit, a limiting unit, a forming unit and a traction unit, the core mold penetrates through the magnetic unit, the limiting unit and the forming unit; the raw material disc is of a rolling shaft structure used for winding a to-be-formed material. The magnetic unit is used for carrying out non-contact limiting on the core mold and applying backward force to the core mold to prevent the core mold from slipping off; the limiting unit is used for preventing the core mold from being separated due to stress; the forming unit is used for heating a to-be-formed material and processing the to-be-formed material into a pipe fitting; and the traction unit is used for clamping the pipe fitting and continuously and forwards pulling the pipe fitting to finally obtain a finished pipe fitting product. The device disclosed by the invention realizes continuous pultrusion of a closed pipe sleeve structure, is suitable for a hollow pipe type structure needing to be heated and cured, and provides a new process method for continuous molding of the hollow pipe type structure.