19results about How to "Prevent closure" patented technology

The invention discloses a pressure-controlled drainage gas production method and system for a coal-bed gas well. The pressure-controlled drainage gas production method comprises the steps that drainage is conducted through the first daily drainage amount, wherein the first daily drainage amount meets the eliminating demand for production interference objects in a coal bed; and a pressure-supplementing medium is injected while drainage is conducted, and the downhole flow pressure daily drop amount is maintained as a first differential pressure value so as to avoid retracting and closing of pores and cracks in the coal bed. According to the pressure-controlled drainage gas production method for the coal-bed gas well, the drainage speed at the drainage state can be conveniently determined, the eliminating demands for drilling and completion fluids, pulverized coal and slack coal in the coal bed can be met, and meanwhile, retracting and closing of the pores and the cracks in the coal bed can also be avoided; and compared with the prior art, the pressure-controlled drainage gas production method is simple in process, the production efficiency of the coal-bed gas well can be greatly improved, and quite high practical value and popularization value are achieved.

This utility model discloses a four-part mold, relating to the field of mold technology. It includes a base, a bottom mold on top of the base, a top mold on top of the bottom mold, a limiting component between the bottom mold and the top mold, and a feeding component on top of the top mold. The limiting component includes a limiting shaft, which is located on one side of the top mold. During injection molding, the raw material is smoothly conveyed from the injection port to the feeding port, then sequentially enters the distributor, passes through the conveying pipe to the discharge port, and is finally precisely delivered into the four different cavities of the inner mold for forming. This ingenious design using a four-part mold, compared to a single-part mold, can more evenly distribute the ejection force during the ejection process after product molding, effectively reducing damage to the product caused by the ejection operation, improving product qualification rate, reducing production costs, and enhancing production efficiency and product quality stability.

The invention provides an end cover assembly, an energy storage device and a power utilization system. The end cover assembly comprises a top cover, the top cover is provided with a first surface and a second surface which are oppositely arranged, the top cover is provided with an anti-explosion hole, and the anti-explosion hole penetrates through the first surface and the second surface; the explosion-proof assembly is arranged on the top cover and seals the explosion-proof hole; the lower plastic cement is arranged on the second surface side of the top cover, the lower plastic cement comprises a plastic cement part, a fence part and a boss, the plastic cement part is connected with the fence part, and the orthographic projection of the fence part on the second surface at least covers part of the explosion-proof hole; the fence part is provided with an open hole and a first exhaust hole, the open hole is closer to the plastic part than the first exhaust hole, the open hole is communicated with a space between the explosion-proof assembly and the fence part and a space of one side, deviating from the top cover, of the lower plastic part, and the first exhaust hole is communicated with a space between the explosion-proof assembly and the fence part and a space of one side, deviating from the top cover, of the lower plastic part; the boss is convexly arranged on the surface, deviating from the top cover, of the plastic part and connected with the fence part.

This utility model discloses an automatic sprinkler curing device for cap beams, relating to the field of cap beam construction technology. It includes a bottom support clamp, a support frame, and a sprinkler module. The sprinkler module is connected to an automatic water supply module. The bottom support clamp is clamped to the outer surface of the upright support column. The support frame is M-shaped, with a first slot and a second slot for respectively securing two upright support columns. Two first clamping rods are provided and respectively installed and fixed in the first and second slots. Two second clamping rods are provided and respectively detachably installed at the opening positions of the first and second slots. This utility model utilizes the bottom support clamp to install the support frame and sprinkler module under the cap beam. The automatic water supply module intermittently supplies water to the sprinkler module, achieving intermittent automatic sprinkler spraying and improving the degree of automation. The support frame and sprinkler module can be inserted horizontally directly below the cap beam rather than diagonally below, thereby achieving comprehensive sprinkler spraying of the cap beam's bottom surface and avoiding sprinkler dead zones.

The embodiment of the present application provides a kind of voltage transformer secondary circuit protection control method and device, the method comprises: the current data of voltage transformer secondary circuit is collected in real time;The first judgment is carried out to the current data, and first judgment result is obtained;When first judgment result is characterized by passing, the second judgment is carried out to the current data, and second judgment result is obtained;When the second judgment result is characterized by passing, accumulated sampling data is cleared;The first judgment, second judgment are used to judge whether the voltage transformer secondary circuit generates different current fault.The voltage transformer secondary circuit protection control method in the embodiment of the present application can effectively protect voltage transformer secondary circuit, and maintenance efficiency is improved.

The utility model relates to a pipeline arrangement device for nursing. The pipeline arrangement device comprises a support; the mounting seat is connected with the bracket; the long-strip-shaped connecting frames are arranged at the bottom of the mounting base side by side; the pipeline fixing clamp is mounted on the connecting frame in a sliding manner and is used for fixing and arranging pipelines; and the pipeline winding assembly is mounted at one end of the connecting frame and is used for winding the pipeline. Compared with the prior art, the pipeline arrangement device has the advantages that numerous pipelines are effectively arranged, redundant pipelines are wound and wound in order, the anti-slipping performance of the pipelines is improved, the pipeline arrangement efficiency is improved, and the operation and management difficulty of medical staff is reduced.

The utility model discloses a kind of self-adapting elastic waist support mechanism and seat, including pedestal and waist support, elastic member is equipped between pedestal and waist support, elastic member can force waist support always have forward trend;Self-adapting guide structure is equipped between pedestal and waist support, self-adapting guide structure includes the sleeve portion set on one of pedestal and waist support, the sliding fit portion set on the other of pedestal and waist support, the inner hole of sleeve portion is the guide hole extending front and back;Sliding fit portion is inserted in guide hole and forms front and back sliding connection with sleeve portion;By leaving gap between sliding fit portion and sleeve portion, provide certain self-adapting adjustment space for sliding fit portion in guide hole, so that waist support can be deflected after being stressed, and smoothly slide back after deflection, avoid sliding fit portion to form larger extrusion force to guide hole inner wall, reduce the risk of jam when waist support slides, improve the use experience of seat.

The utility model relates to the technical field of oil tank, put forward a kind of main oil tank oil level alarm device, the design includes oil tank body, oil tank body upper portion is provided with cover plate subassembly, cover plate subassembly includes the cover plate body of buckling in the upper portion of oil tank body, cover plate subassembly still includes the cross post of fixedly connected in the bottom of cover plate body, cross post outside is provided with oil level monitoring subassembly, oil level monitoring subassembly includes the lower tray of limit sliding in the outside of cross post, the outside of oil tank body is still provided with the alarm component that can cooperate with oil level monitoring subassembly to the oil level height detection and alarm of oil tank body;The design is through cross direction + magnetic attraction sealing design, solved the problem that oil tank float guiding stability is insufficient and sealing is insufficient in the prior art.

This invention provides a food processing machine, including a main unit and a mixing cup detachably mounted on the main unit. The mixing cup contains a pulverizing blade. The main unit has a motor assembly for driving the pulverizing blade to rotate. The main unit includes a main unit housing, which forms a mounting cavity for mounting the motor assembly. The main unit housing has an opening communicating with the mounting cavity. At least a portion of the motor assembly forms the outer surface of the main unit together with the main unit housing through the opening, thereby reducing the size of the main unit, especially its height, making assembly simple and easy to handle.

This invention relates to the field of electrical control technology and discloses a primary and secondary integrated pole-mounted circuit breaker, including a circuit breaker, a support member, a drive member, a connector, and outgoing terminals. The support member is disposed on one side of the circuit breaker, the drive member is located inside the support member, the connector is disposed on the circuit breaker, and the outgoing terminals are located at the top of the circuit breaker. It also includes a limiting assembly disposed on one side of the circuit breaker, comprising an adjusting member, a positioning member, a limiting member, a blocking member, a reset member, and a fixing housing. The adjusting member is disposed on one side of the drive member, and the positioning member is located on one side of the circuit breaker. The beneficial effect of this invention is that by setting the positioning member and the limiting member, the states of the operating lever separating and merging the isolating blades can be fixed respectively, thereby preventing the isolating blades from closing due to worker contact, thus preventing electric shock accidents to workers.

This utility model discloses a sealing ring and sealing device for a railway freight car brake piping system. The sealing ring includes a sealing ring body, a first main lip, a second main lip, and an annular boss. The first main lip is annular, and its root is fixed to the inner surface of the sealing ring body. The second main lip is also annular, and its root is fixed to the inner surface of the sealing ring body. The sealing ring body, the first main lip, and the second main lip form a sealing ring groove. The annular boss is disposed within the sealing ring groove, and its root is fixed to the inner surface of the sealing ring body. The annular boss forms a first lip groove and a second lip groove with the first and second main lip, respectively. An inflation groove is provided on the upper surface of the annular boss. This sealing ring can improve the sealing performance of railway freight car brake piping connections.

The utility model provides an ultra-smooth nasal feeding tube with a hydrophilic coating, which belongs to the field of medical instruments and comprises a nasal feeding tube body, one end of the nasal feeding tube body is in a pointed cone shape, a hydrophilic component is arranged on one side of the nasal feeding tube body, and a fixing component is arranged outside the nasal feeding tube body. According to the hydrophilic nasal feeding tube, the hydrophilic assembly is arranged, so that the effect of supporting the nasal feeding tube body is achieved; before the nasal feeding tube is used, the nasal feeding tube body is placed in normal saline to be soaked for 30 seconds, the hydrophilic coating made of polyvinylpyrrolidone absorbs water and expands to form the hydrogel layer, when the nasal feeding tube is inserted into the nasal cavity and the throat of a patient, the formed hydrogel layer can greatly reduce the friction coefficient between the outer wall of the nasal feeding tube body and the nasal cavity and the throat of the patient, and discomfort of the patient is reduced; meanwhile, the supporting wire made of the nickel-titanium alloy can improve the stability of the nasal feeding tube body in the bending process, and the situation that the inner cavity of the nasal feeding tube body is completely closed when the patient moves is avoided.

The utility model discloses an automatic blowing device of an injection molding machine, which relates to the technical field of blowing of injection molding machines, and comprises a fixed mold and a movable mold, gas delivery pipes, gas passing grooves and gas distribution grooves are arranged in the fixed mold and the movable mold, and the gas delivery pipes are communicated through a header pipe to realize uniform gas distribution; the air passing groove is connected with the air conveying pipe, the air distributing groove is formed in the outer side of the air passing groove, a slidable extrusion head is arranged at the tail end of the air distributing groove, and the extrusion head is pushed to stretch out through airflow to apply mechanical thrust to an adhered product; the air separation plate is arranged in the sliding grooves of the fixed mold and the movable mold in a sliding manner, and is matched with the first pressure spring to control the on-off of an air path: during mold closing, the air separation plate is pressed to slide to block the air passing groove; and when the mold is opened, the first pressure spring resets to conduct the gas path. The auxiliary assembly limits displacement of the extrusion head in the injection molding stage through an extension plate and a second compression spring, and the surface flatness of the mold is ensured. The device is of a full-mechanical structure, and efficient demolding is achieved through synchronous control over actions of a gas circuit and a mold in combination with mechanical thrust of an extrusion head.

The utility model discloses a kind of gas promotes extraction system, it is related to coal seam gas extraction technical field, including the water injection gas injection borehole and gas extraction borehole being set in the inside of coal seam, the inside of water injection gas injection borehole and gas extraction borehole is equipped with cement slurry hole sealing material, the side of water injection gas injection borehole is provided with the displacement operation mechanism for carrying out water injection gas injection alternation operation, the side of gas extraction borehole is provided with the gas extraction mechanism for separating gas-liquid.The utility model effectively overcomes the limitation of single displacement mode by alternately injecting water and gas, can displace free gas in coal seam fissure by high-pressure water, then replace gas by using competitive adsorption effect of gas, simultaneously displace water in fissure, form new gas flow path, avoid to close flow path due to the plugging effect of water, cyclic alternation water injection gas injection can expand coal seam fissure network, improve gas extraction rate.

The utility model relates to the field of medical instruments, and discloses a biliary tract calculus removal mesh basket with a supporting effect, which comprises a supporting tube, the right end of the supporting tube is fixedly connected with an outer sleeve, the inner wall of the outer sleeve is inserted with a pushing tube, the left end of the pushing tube is fixedly connected with a pushing handle, the left end of the pushing tube is provided with a calculus removal basket, and the left end of the pushing handle is provided with a handle. A supporting mechanism is arranged on the outer wall of the pushing pipe and comprises a supporting assembly and a limiting assembly, the supporting assembly comprises a containing groove, the containing groove is formed in the outer wall of the pushing pipe, an elastic piece is fixedly connected to the inner wall of the containing groove, a sliding groove is formed in the inner wall of the outer sleeve, and the elastic piece slides on the inner wall of the sliding groove. According to the utility model, through the arrangement of the supporting assembly, after the stone taking basket is unfolded, the elastic sheet can be driven to leave the interior of the outer sleeve by continuously pushing the push handle, so that the elastic sheet can rotate to be in an inclined state under the action of elastic deformation of the elastic sheet, and the inner wall of an enteric cavity can be supported through the elastic sheet.

The utility model provides glue-free formaldehyde-removing composite cloth and a glue-free formaldehyde-removing mattress. The glue-free formaldehyde-removing composite cloth comprises a first cloth layer, a second cloth layer and a formaldehyde catalytic powder layer located between the first cloth layer and the second cloth layer, wherein a plurality of hot melting bonding points are arranged on one side, facing the second cloth layer, of the first cloth layer, and the hot melting bonding points are bonded with the second cloth layer in a hot melting manner, so that the formaldehyde catalytic powder layer is sealed between the first cloth layer and the second cloth layer. According to the utility model, large-area gluing is replaced by the point-shaped hot melting combination part, so that the influence of an adhesive on the contact area of catalytic powder is avoided, the powder can be effectively sealed, catalytic components are prevented from falling off, the formaldehyde removal service life is lasting and efficient, and meanwhile, the production efficiency is improved.

The application discloses a control system of a direct-current relay for a charging pile, which comprises a current management unit, one end of the current management unit being connected with a preset power supply; a relay array, a first end of the relay array being connected with the other end of the current management unit, and a second end of the relay array being connected with a power distribution unit; the relay array comprises a plurality of direct-current relays; an MCU unit, the MCU unit being connected with the preset power supply, the current management unit and the relay array respectively; the MCU unit is specifically used for monitoring an output current value of the current management unit in real time, judging whether the output current value exceeds a preset current value, and driving the current management unit by using a current limiting strategy when the output current value exceeds the preset current value, so as to limit the output current value of the current management unit and prevent the closure of an unintended closed direct-current relay in the relay array. Thus, by monitoring the working current of the relay array in real time, abnormal damage of the charging pile and the vehicle end can be prevented.

The utility model relates to the technical field of stop valves, in particular to a dual-seal stop valve which is characterized in that a screw is fixedly connected to the upper inner wall of a rotary cover, a threaded sleeve is in threaded connection with the outer surface of the screw, a lifting seat is fixedly connected to the lower surface of the threaded sleeve, and a telescopic air cylinder is rotationally connected to the lower surface of the screw; a handle is fixedly connected to the outer surface of the rotating cover, a spring is fixedly connected to the upper inner wall of the handle, an adjusting handle is fixedly connected to the end, away from the handle, of the spring, and a limiting frame is fixedly connected to the left end of the adjusting handle. According to the stop valve, the safety risk caused by abnormal conditions such as faults of the driving part is reduced, the use scene of the stop valve is expanded, the actual application value of the stop valve is enhanced, the position of the handle can be limited in the static state, closing or opening of the stop valve caused by mistaken touch of the handle is avoided, and the safety effect of the stop valve is improved.

This invention relates to an optical film, its preparation method, and its application. The optical film comprises a polyester matrix resin and a cyclic olefin copolymer dispersed in the polyester matrix resin in particulate form, and satisfies at least the following conditions: (1) the particle size distribution coefficient is less than or equal to 0.25; (2) the particles separate from the polyester matrix resin interface to form a microporous structure, and the ratio of the pore size of the microporous structure to the particle size is 0.7~1.3; (3) the glass transition temperature of the cyclic olefin copolymer is T. g,COC The glass transition temperature of the polyester matrix resin is T. g,Polyester And T g,COC -T g,Polyester ≥40℃. The optical film of this invention has excellent reflectivity and heat resistance.