28results about How to "Effectively closed" patented technology

This utility model discloses a self-locking hydraulic pipe joint, including a male joint and a female joint. The male joint has a pin, and a sealing sleeve and a spring are slidably fitted onto the surface of the pin. Under the action of the spring, the sealing sleeve can cover the connecting hole on the pin. A locking ring groove is provided on the outer wall of the pin. The female joint has an axially sliding valve core inside, which is connected to the spring and used to close the inner flow channel. The female joint also has multiple radially arranged locking pins, which cooperate with the locking ring groove of the pin to achieve mechanical locking. During the insertion process, the pin pushes the valve core back and compresses the spring, while the sealing sleeve backs to connect the connecting hole with the inner flow channel for flow. The locking pins automatically spring into the locking ring groove to achieve self-locking connection. The locking pins are made of ferromagnetic material and can be quickly unlocked by magnetic attraction from an external magnetic ring. This utility model has a compact structure, automatic sealing, self-locking, and quick unlocking functions, is easy to operate, and is suitable for hydraulic systems with high sealing and high reliability requirements.

This utility model discloses a user-friendly food processing machine, comprising a main unit with a knob assembly, the knob assembly including a knob bracket, which is disposed at a mounting hole and fixed to the inner wall of the machine housing; a control board, mounted on the knob bracket, with buttons and an encoder surrounding the buttons on the side facing the mounting hole; a display module, including a button bracket, a display board, a display bracket, and a display panel arranged sequentially from the inside out, the button bracket sliding axially to trigger the buttons, the display board electrically connected to the control board and having a display unit on the outward-facing side, the display bracket fitting against the outer side of the display board, the display bracket having a light-transmitting groove corresponding to the display unit, and the display panel fitting against the outer side of the display bracket to block the light-transmitting groove; and a knob, sleeved on the outer periphery of the display module and connected to the encoder to operate the encoder. The display module is directly disposed within the knob to display the corresponding functions, facilitating user observation and operation.

The utility model provides a waterproof vent assembly and underwater robot belong to underwater robot technical field, include: install shell, be provided with installation cavity in, gas inlet channel is provided on install shell and is communicated with installation cavity arrangement, and gas inlet channel is provided with waterproof air -permeable part in, waterproof air -permeable part can change position or take place flexible deformation relative to gas inlet channel, butt joint department, it is provided in installation cavity, and butt joint department can be along the center axis direction of gas inlet channel linear movement, install shell is provided with the first water inlet hole of through and installation cavity is linked together, push elasticity spare, it is provided in gas inlet channel, and one end of push elasticity spare is used for underwater robot connection, the other end of push elasticity spare and waterproof air -permeable part are opposite, the advantage is when equipment is in underwater, realize the effective closure of gas inlet channel, once equipment returns to the water surface or is in low water pressure environment, make gas inlet channel re -open, restore the aeration state.

The utility model discloses a steady type internet access safety lock, relates to internet access safety technical field, including lock portion and key, the lock portion includes the fixed mount that is used for embedding in the computer internet access, the fixed mount is hollow frame-shaped setting, the fixed mount is connected with the elastic clamping tongue, the top side of the elastic clamping tongue is provided with the clamping protrusion, the top side of the elastic clamping tongue is connected with the key, the key is connected with the key, and the key is connected with the key. A key clamping hole corresponding to the elastic clamping tongue is formed in the front side of the fixing frame in a penetrating mode. The key comprises a control part and an unlocking part which is connected to the control part and can penetrate through the key clamping hole to be matched with the elastic clamping tongue. A guide column corresponding to the key clamping hole is integrally formed on the inner side surface of the fixing frame, the guide column is of a columnar structure, and the extending direction of the guide column is consistent with the axial direction of the key clamping hole so that a channel used for guiding the unlocking part can be formed in the extending direction of the guide column. The guide column provides accurate guidance for insertion of the key, so that damage to the lock is reduced, and the unlocking process is ensured to be carried out smoothly.

The utility model provides an outdoor shooting lamp. The outdoor shooting lamp comprises a shell, a light-emitting mechanism and a heat dissipation piece. The light-emitting mechanism comprises a light-emitting assembly and a protective cover arranged on the shell, the protective cover and the shell define a containing cavity, and the light-emitting assembly is arranged in the containing cavity; the heat dissipation piece is arranged in the containing cavity, located on the side, away from the soft light cover, of the light emitting assembly and used for heat dissipation. Wherein one side of the shell sinks inwards to form an expansion groove, the outdoor lamp further comprises an end cover, and the end cover completely extends into the expansion groove, is connected with the expansion groove in a clamped mode and is used for closing or opening the expansion groove. According to the outdoor shooting lamp, a standardized interface is provided for a user through the arrangement of the expansion slot, and different accessories can be rapidly added to the outdoor shooting lamp; the pluggable design of the end cover enables the expansion slot to be conveniently closed or opened according to actual requirements, the expansion slot can be effectively closed when the expansion slot is not used through the design of the end cover connected in a clamping mode, and invasion and damage of external dust, rainwater and other environmental factors to the expansion interface are avoided.

The utility model provides a kind of cold slag machine and boiler equipment component, the purpose is to solve the technical problems that dust particles in the material cavity of existing disc type cold slag machine are easy to escape.This cold slag machine includes water chamber, sealing mechanism and push mechanism;Water chamber is annular, and multiple are arranged along vertical direction, and gap constituting material cavity is left between two adjacent water chambers;Water chamber is provided with discharge channel communicating its upper and lower surfaces;Sealing mechanism is composed of two annular pieces;Sealing mechanism is provided with four groups, respectively located the upper and lower surfaces of water chamber, and corresponding to the inner and outer ring walls of water chamber;Push mechanism is provided with multiple, and corresponds to material cavity one by one;Push mechanism includes inner ring and outer ring, and the upper and lower sections of inner ring and outer ring are located between the two annular pieces of upper and lower sealing mechanism respectively;Multiple radial extension scraping plates are evenly arranged between inner ring and outer ring.This cold slag machine effectively closes the material cavity between water chamber, thereby avoiding the escape of dust particles in material cavity.

The utility model provides a kind of oscillation device for blood protein detection, it is related to blood protein detection field, including oscillation unit, including the oscillation generation box for generating oscillation movement, the cover fixedly connected in the top of the oscillation generation box, the spring fixedly connected in the bottom of the inner chamber of the cover four around, the oscillation platform fixedly connected in the top of the spring, and the tube groove for limiting placement test tube being opened in the top of the oscillation platform;The utility model is through the design of limiting component, especially the cooperation of screw rod, pressing plate, pad and rubber pad, can effectively close and limit the top of test tube, prevent blood leakage due to oscillation force and liquid inertia in the process of oscillation, to avoid sample waste and experimental environment pollution, by the cooperation of the oscillation generation box in oscillation unit, oscillation platform and spring, can make oscillation more stable and uniform, help to improve the mixing effect of blood sample, ensure the accuracy and reliability of detection result.

The invention belongs to the technical field of tunnel construction, and particularly provides a strong bad alteration tunnel surrounding rock pre-supporting structure type selection and construction method and system.The method comprises the steps that occurrence environment index parameters of a strong bad alteration geologic body on a tunnel engineering site and attribute index parameters of the strong bad alteration geologic body are collected and quantified; calculating a pre-support necessity comprehensive index by adopting a weighted summation model based on the occurrence environment index parameter and the self attribute index parameter, and dividing a pre-support necessity level according to the pre-support necessity comprehensive index; and based on the pre-support necessity level, selecting a strong bad alteration tunnel surrounding rock pre-support structure and performing construction. According to the technical scheme, a scientific basis is provided for tunnel construction penetrating through the strong bad alteration zone, and precise matching and cooperation of engineering measures and geological conditions are achieved.

This invention discloses a water-resistant starch adhesive and its preparation method. The adhesive is composed of the following raw materials in parts by weight: 380-420 parts starch, 15-18 parts polyvinyl alcohol, 4-6 parts urea, 0.5-1.5 parts urea-formaldehyde resin, 1-3 parts borax, 10-12 parts sodium hydroxide, and 1000-1200 parts water. In the preparation process, polyvinyl alcohol, urea, and a trace amount of urea-formaldehyde resin are first pre-condensed at 65-75°C under acidic conditions (pH 4.2-4.8) to generate a polyvinyl alcohol-urea condensate. Then, the condensate is combined with starch and other raw materials in a one-pot process to complete gelatinization and final product formulation. This invention uses the polyvinyl alcohol-urea condensate to effectively replace more than 90% of the conventionally used commercial urea-formaldehyde resin, resulting in extremely low free formaldehyde content, a delamination time of 27-28 hours, and an adhesive strength of 850-860 N / m. The overall raw material cost is reduced by approximately 13%, and the process is simple, making it suitable for the production of corrugated cardboard adhesives.

The present application relates to the technical field of grinding machine, especially to a quick splicing structure of grinding machine module; its technical scheme comprises: a driving shaft, a mounting disc and a grinding disc; at least three connecting blocks are arranged on the top surface of the grinding disc; the bottom surface of the mounting disc is provided with insertion holes; lock blocks are slidingly connected to the mounting disc at the positions corresponding to the insertion holes; a rotating disc is rotationally connected to the mounting disc and coaxial with the mounting disc; guide grooves are formed in the rotating disc at the positions corresponding to the lock blocks, and guide shafts are fixed to the bottom of each lock block. The present application synchronously links all the lock blocks through a single rotating disc, simplifies the traditional operation of disassembling and assembling multiple connection points one by one into a single action of only turning the convex block, significantly reduces the steps and time consumption of replacing the grinding disc; especially in the working condition of a large grinding machine with a large number of grinding discs, the present application greatly shortens the downtime of the grinding machine and improves the continuous operation efficiency.

The application discloses a hemostatic device applied to various irregular wounds and belongs to the technical field of medical first-aid equipment, which comprises a solid syringe and a medical polyvinyl alcohol sponge strip; the medical polyvinyl alcohol sponge strip can be axially and radially expanded and is punched into a wound by the device, and the sponge strip is used for omnibearing compression hemostasis; meanwhile, the segmented design of the sponge strip allows the selection of a proper number of segments according to the actual length of the wound, so that the wound can be completely covered; after the sponge strip enters the wound, the sponge strip rapidly absorbs blood and expands, generates uniform pressure, effectively seals blood vessels and achieves the purpose of hemostasis; the radial and lateral expansion of the hemostatic sponge strip is realized, the irregular wound is fully covered, the hemostasis effect is remarkably improved, the segmented design makes the hemostatic device capable of flexibly adapting to wounds of different sizes and shapes, the use of additional cutting tools is reduced, the operation process is simplified, the efficient hemostasis mechanism shortens the treatment time, reduces the risk and discomfort of patients and improves the success rate of first aid.

This utility model discloses a one-way valve structure and a breast pump using the one-way valve, relating to the field of breast pump technology. The one-way valve structure includes a valve seat and a flexible one-way valve. The bottom of the valve seat is provided with a milk inlet and an assembly part. The flexible one-way valve includes an assembly section and a deformation section. The deformation section is located below the milk inlet and can elastically deform towards or away from the milk inlet to close or open it. By adopting a design where the assembly section of the flexible one-way valve is fixedly connected to the assembly part of the valve seat, the flexible one-way valve and the valve seat become a single unit, eliminating the need for disassembly, greatly simplifying cleaning steps, improving user experience, and ensuring the stability of the one-way valve during use. This prevents any displacement or loosening during breast pumping, thereby ensuring smooth milk flow and effective valve closure.

The utility model belongs to the technical field of wastewater treatment, in particular to wastewater treatment equipment based on UV (ultraviolet) photolysis deodorization, which comprises a wastewater treatment tank and two UV photolysis deodorization lamps, a seal cover is fixed at the top of the wastewater treatment tank in a threaded connection manner, a guide shell is fixedly connected at the top of the seal cover, and a deodorization component is arranged at the top of the wastewater treatment tank. Odor is guided by the upper partition plate and the lower partition plate to flow in a snakelike mode in the box body, the odor sequentially flows through the two deodorization spaces and then is exhausted outwards, when the odor enters the first deodorization space, the two angular inflation blocks and the inflation cushion are inflated and expanded, so that the first deodorization space is effectively sealed, and the odor can be effectively removed from the first deodorization space. The air flow can effectively keep slowly flowing or stopping for a certain time at the position, corresponding to the UV photolysis deodorization lamp, in the box body, and the irradiation reaction time of odor and the UV photolysis deodorization lamp in the box body is prolonged, so that the air flow can be effectively and completely reacted and purified in the flowing-in and flowing-out processes.

This utility model relates to the field of interface dustproof technology, specifically a dustproof structure for a display interface, including a display and a signal port located at the bottom of the back of the display. The key feature is that a storage box is fixedly connected to the back of the display near the top of the signal port. The advantages of this utility model are: by using a push spring to push the dust cover downwards and press against the sealing flange, the signal port can be effectively sealed. Simultaneously, during insertion, simply align the plug with the push handle and press down, causing the slider to slide down. Pulling the cord lifts the dust cover, aligning the plug with the signal port, and then inserting it. This eliminates the need for one hand to lift and the other to insert, allowing for easy one-handed operation. Furthermore, the sealing ring on one side of the dust cover and the sealing gasket on the top surface of the sealing flange effectively seal any gaps around the signal port, improving the dustproof sealing effect.

The utility model discloses a kind of waste liquid collection automatic lifting systems, for waste liquid collection, including waste liquid collection box, pumping device, liquid level sensing device and PLC device;The input end of the waste liquid collection box is communicated with waste liquid input pipe;The liquid level sensing device is located inside waste liquid collection box, and the pumping device and liquid level sensing device are electrically connected with PLC device;The input end of the pumping device is communicated with waste liquid collection box, and the output end of the pumping device is communicated with waste liquid collection tank inside.The beneficial effect: effectively through the alarm signal of PLC device, the liquid level control of waste liquid is more accurate, realizes multipoint control.

The invention provides an automatic gas component analysis inductor, and belongs to the technical field of gas detection equipment, the automatic gas component analysis inductor mainly comprises a plurality of gas sensors, and further comprises a gas storage cylinder and a gas suction assembly, the gas suction assembly sucks gas in a space to be detected into the gas storage cylinder; the probe end of the gas sensor is mounted in the gas storage cylinder, so that when the pressure intensity in the gas storage cylinder reaches a set value, the gas sensor is used for collecting gas component information in the gas storage cylinder at the moment; the device further comprises a component calculation module, and the component calculation module calculates the component content of external gas according to the air pressure ratio of the air storage cylinder to the space to be detected. The automatic gas component analysis sensor can accurately and quickly detect trace gas components, and is good in economical efficiency.

The utility model relates to the technical field of low borosilicate glass tubes, in particular to a medicinal low borosilicate glass tube with good light shielding performance. Comprising a glass tube, a shading cylinder is arranged on the outer ring of the glass tube in a sleeving mode, a gap exists between the shading cylinder and the glass tube, two sets of mounting frames which are arranged up and down at intervals are arranged on the shading cylinder in the circumferential direction, guide rods are symmetrically arranged on the mounting frames at intervals, and clamping blocks penetrating through the adjacent mounting frames are arranged between the guide rods in a sliding mode; and elastic pieces are arranged between the clamping blocks and the corresponding guide rods. The shading cylinder is additionally arranged on the outer side of the glass tube, and the position between the shading cylinder and the glass tube is fixed by means of the clamping block, so that external light rays are effectively prevented from directly irradiating medicines in the tube, and chemical changes of the medicines caused by illumination are remarkably reduced; the convenient and stable assembly of the glass tube in the shading cylinder and the simple and rapid disassembly operation are realized.

The invention discloses a gas-fired boiler low-nitrogen burner convenient to adjust gas inflow, and relates to the technical field of boilers, the gas-fired boiler low-nitrogen burner convenient to adjust gas inflow comprises a motor, a gas inlet pipe and a driving mechanism, a first adjusting mechanism is arranged in the gas inlet pipe, and the driving mechanism comprises a fixing disc coaxially fixed to an output shaft of the motor; the outer edge of the side wall of the fixed disc is provided with a plurality of fixed frames which are distributed along the circumferential direction of the fixed disc in an array manner; according to the device, motor rotating speed regulation and control and air door opening and closing regulation and control are combined, when the rotating speed of the motor is increased, centrifugal force drives a balancing weight to move outwards, a first telescopic rod, a fixing pipe and a second telescopic rod push a spiral rod to move axially, the spiral rod is matched with a limiting column, and linear motion is converted into rotation of a first annular fluted disc; therefore, all the blades are driven to integrally and synchronously change the deflection angles of the blades, a sensor and a complex circuit are omitted, the occupied area and the manufacturing cost of the system are reduced, the air inlet amount can be adjusted in a stepless mode in real time according to the air inlet requirement, and different air inlet requirements are met.

The application relates to the technical field of optical module sealing and protection, and proposes an optical module sealing and packaging protection structural member, which comprises a supporting plate, a protection cover detachably connected to the surface of the supporting plate, a protection module connected to the surface of the supporting plate, and a heat dissipation structure connected to the surface of the supporting plate; the protection module comprises a guide air rod fixedly connected to the surface of the supporting plate, a sliding block slidably connected to the surface of the guide air rod, a No. 1 connecting frame detachably fixedly connected to the surface of the sliding block, and a plug-in module connected to the end of the No. 1 connecting frame; the plug-in module is used for sealing and protecting the interface of the optical module; an adjusting module is connected between the plug-in module and the No. 1 connecting frame; and the number of the plug-in modules is two. Through the above technical scheme, the interface of the optical module is not well protected in the existing optical module sealing and packaging process, and the optical module cannot be well clamped, which can cause instability of the packaging, and the application effect is better.

The present application belongs to the technical field of plant fiber surface modification, and provides a method for atomization-induced in-situ modification of plant fiber. The method comprises: preparing an aqueous inorganic salt solution, the inorganic salt being selected from at least one of sodium silicate, potassium silicate, sodium aluminate, aluminum sulfate, magnesium chloride and magnesium sulfate, the concentration being 0.3-4.0 wt%, and the pH value being 9.0-11.2; putting dry plant fiber into a plow blade fly cutter mixer to make the fiber loose and layered; starting the plow blade fly cutter to make the solution drop to the high-speed rotating plow blade fly cutter blade surface and be atomized into microdroplets, the microdroplets impacting, coating and dispersing the plant fiber under the action of centrifugal force and shear flow field; and continuously mixing until semi-dry modified plant fiber material is obtained. The present application effectively reduces modification energy consumption, improves modification uniformity and penetration depth, generates a chemical bonding mineral layer on the fiber surface in-situ, and significantly improves the flame resistance and water resistance of the plant fiber.

The invention relates to the technical field of tunnel grouting construction, in particular to a grouting method based on a graphene cement-based material in a deep underground space. The preparation method comprises the following steps: S1, preparing graphene dispersion liquid; s2, taking the graphene dispersion liquid prepared in S1 as a raw material, and mixing cement and an additive to prepare a graphene cement-based grouting material; s3, grouting holes are formed in the to-be-grouted area of the tunnel, drilling operation is conducted, and grouting pipes matched with the grouting holes in size are installed; s4, a grouting pipeline is subjected to sealing detection, and the graphene cement-based grouting material prepared in the S2 is injected into a grouting hole through the grouting pipeline; and S5, the grouting process is monitored, the grouting quality is verified through a preset detection method after grouting is completed, and grouting is completed if preset requirements are met. According to the construction method, the graphene nanomaterial is innovatively applied to the field of traditional tunnel grouting, and the grouting process is improved. The method is mainly applied to the aspect of graphene cement-based material tunnel grouting.

The utility model relates to a pull spring rotating shaft with oil injection hole, including rotating shaft body, axial oil injection channel, radial oil injection channel, shaft sleeve and lubricating cavity. Rotating shaft body is composed of shaft body and threaded connector, axial oil injection channel passes threaded connector to the midpoint in the shaft body, radial oil injection channel connects axial channel and lubricating cavity, and solid lubricating grease enters lubricating cavity through these channels, and plays the lubricating effect. In order to guarantee the punching precision, axial and radial punching frock have been designed, the inner thread of its connector is matched with threaded connector, and the punching channel corresponds the midpoint of axial and radial respectively, and the channel top is equipped with the circular truncated cone transition end, and the drill bit is convenient to enter. The utility model has the advantages of simple structure, convenient oil injection, good lubricating effect and can effectively prolong the service life of rotating shaft.

The invention relates to the technical field of coal mine stope mine pressure and roadway support, and discloses a strong mine pressure comprehensive treatment method for a hard roof small coal pillar gob-side roadway of an extra-thick coal seam. The super-thick coal seam hard roof small coal pillar gob-side roadway strong mine pressure comprehensive treatment method comprises the steps that roof layering hydraulic fracturing is carried out before stoping of a previous working face, and a damage characteristic database is constructed; actually measuring the damage depth of the coal pillar in a stoping period, and correcting and determining the reserved width of the small coal pillar by utilizing the database; drilling parameters are collected during tunneling of the working face, and connectivity discrimination indexes are calculated in combination with fracturing efficiency so as to judge the fracture state; differentiated grouting reinforcement is implemented in a grading manner; and deformation is monitored in the recovery period, and secondary grouting dynamic control is implemented based on historical classification results. According to the method, digital closed-loop linkage of pressure relief, design and reinforcement is achieved, the problems of strong mine pressure display and surrounding rock deformation control under the hard roof are effectively solved, and full-period stability of a roadway is guaranteed.

The present application relates to the field of road maintenance engineering, in particular to a kind of asphalt pavement preventive maintenance technology and material determination method, the present application considers with water permeability coefficient index, designs the lower limit value of preventive maintenance material dosage, can guarantee the functional requirement of preventive maintenance material application, effectively closes pavement void, prevents water from entering, improves the ability of road surface to resist water damage;With the index of construction depth as the consideration, the upper limit value of the amount of preventive maintenance material is designed, which can ensure the driving safety after the application of the preventive maintenance material, ensure that the pavement has a construction depth that meets the requirements, can drain the water on the road in time and ensure the driving safety of the road. And the present application limits the amount of preventive maintenance material by setting water permeability coefficient index and construction depth index, can select the preventive maintenance material type that meets water permeability coefficient index and construction depth index at the same time and reduce the cost.

This application relates to the field of smart lock technology and discloses an easy-to-operate smart lock, mainly composed of a lock body, a lock beam assembly, a lock cover assembly, and a connecting assembly. The lock beam assembly is movably mounted on the top of the lock body, and the smart lock is opened and closed by moving the lock beam assembly up and down. The lock cover assembly and the connecting assembly are movably mounted on one side of the bottom of the lock body, and the lock cylinder is protected by rotating the lock cover assembly and the connecting assembly. This invention, by movably mounting the connecting assembly at the bottom of the lock body and fixing the connecting assembly to the lock cover assembly, allows the operator to rotate the connecting assembly to move the lock cover assembly, thereby opening and closing the lock cylinder. When the smart lock is in the locked state, the lock cover assembly effectively seals the lock cylinder, preventing impurities from entering the lock cylinder from the bottom of the smart lock, thus protecting the lock cylinder, slowing down the rusting rate of the lock cylinder, and extending the service life of the smart lock.

The invention relates to multifunctional in-situ repair hydrogel based on a modified dermal matrix as well as a preparation method and application of the hydrogel. The hydrogel is formed by crosslinking a first polymer precursor and a second polymer precursor through dynamic covalent bonds of boric acid ester, the first polymer precursor is carboxymethyl chitosan grafted with a phenylboronic acid group and an epsilon-polylysine chain segment; the second polymer precursor is a soluble acellular dermal matrix which is grafted with a 3, 4-dihydroxyphenyl propionic acid group and is subjected to enzymolysis treatment. The hydrogel disclosed by the invention has good biocompatibility, moldability and potential self-healing capability.