21results about How to "Reduce leak points" patented technology

The invention discloses a piston pump and a clothes processing device, the piston pump comprises a pump body, a piston and a driving assembly, the pump body is of an integrated structure, and the pump body is provided with a piston cavity; the piston is arranged in the piston cavity in a reciprocating sliding mode in the axial direction of the piston cavity. The driving assembly is connected to the pump body, and part of the driving assembly extends into the piston cavity so as to drive the piston to slide in a reciprocating mode. The pump head is connected to the pump body and provided with a liquid outlet and a liquid inlet which are both communicated with the piston cavity. The pump body is of the integrated structure and is provided with the piston cavity, connecting points can be reduced, and therefore possible leakage points and fault points are reduced, the pump body can bear longer-time use, and the stability and reliability of the whole structure of the piston pump are improved. And one part of the pump body is used as a mounting part of the driving assembly, so that the number of parts of the piston pump is reduced, and the assembly process is simplified.

The application belongs to the technical field of composite hydrogen storage, in particular to an improved composite hydrogen storage device for hydrogen storage and a use method thereof, which comprises a hydrogen storage tank body and a solid-state hydrogen storage module arranged in the hydrogen storage tank body, the solid-state hydrogen storage module is filled with a hydrogen storage alloy, and an end interface for hydrogen charging and discharging is arranged on an end cover of the hydrogen storage tank body; the solid-state hydrogen storage module comprises a first hydrogen storage unit and a second hydrogen storage unit arranged axially along the hydrogen storage tank body, and a filtering unit arranged between the end interface and the first hydrogen storage unit; the filtering unit is arranged to be slidable, and the pressure difference between the high-pressure area naturally formed between the end interface and the first hydrogen storage unit and the low-pressure area at the bottom of the tank body during hydrogen charging is used as a driving force, during hydrogen charging, the pressure difference drives the filter screen body to avoid the main flow field, thereby reducing the airflow resistance and ensuring high-speed and high-efficiency hydrogen charging.

The utility model discloses a kind of transformer structures with air layer of box cover, including box cover, air box, hanging plate, pressure release valve and protective baffle, the box cover top is fixedly provided with air box, the inside of the air box is communicated with the bottom of box cover, several hanging plates are fixedly arranged on the air box, the outer side wall of the air box is provided with the pressure release valve being communicated with the inside of air box, the outer side of the pressure release valve is provided with protective baffle, the height of transformer oil tank can be directly reduced, the pressure that oil expansion brings to oil tank caused by the temperature rise of transformer with load is relieved, oil tank processing and assembly are more convenient, transformer product overall appearance is more harmonious and beautiful, operation is safer and more reliable.

The utility model relates to a middle connecting plate of a transmission, the transmission and a vehicle, and the middle connecting plate comprises a middle connecting plate body which is provided with a first shaft through hole and a second shaft bearing mounting hole; the first valve plate and the middle connecting plate body are integrally formed, the first valve plate is provided with a first surface, a plurality of oil cavities are formed in the first surface, and the first valve plate is in surface-to-surface fit with the second valve plate. The first valve plate is integrated on the middle connecting plate body, so that the integration level can be improved, and the lengths of the middle connecting plate and the second valve plate in the thickness direction can be shortened; an oil cavity is adopted to replace a slender oil duct, the oil cavity is small in depth, large in size area, better in castability than the oil duct and good in product casting quality, the first valve plate and the second valve plate are matched in a face-to-face mode, the leakage risk is reduced, the number of the oil ducts in the middle connecting plate body is reduced, and the space occupied by auxiliary holes and a plugging structure and the number of plugging parts can be reduced; the overall dimension of the middle connecting plate is reduced, product cost is reduced, and reliability is improved.

The application discloses a cooling air guide structure, an aero-engine and an aircraft. The aero-engine comprises a centrifugal impeller cover, a radial diffuser, an axial diffuser and a diffuser casing. The diffuser casing is connected to the radial diffuser, the axial diffuser and the centrifugal impeller cover respectively. A chamber is formed between the radial diffuser, the centrifugal impeller cover and the diffuser casing and is close to an outlet of the centrifugal impeller. The cooling air guide structure comprises gas collection channels which are circumferentially and uniformly distributed on the outer periphery of the diffuser casing. The chamber serves as a first gas collection chamber. The gas collection channels are connected to the first gas collection chamber through a first air guide structure so that the gas at the blade tip of the centrifugal impeller outlet is introduced into the gas collection channels through the first gas collection chamber. The gas collection channels guide the introduced cooling air out of the turbine. The cooling air guide structure is an internal channel integrated in the engine. No complex additional pipeline is needed. Compared with the prior art, the weight of the engine is reduced, and the structure is more compact and reasonable.

The utility model relates to the technical field of detection devices, and discloses an underground coal mine flame-retardant cable copper conductor detection device which comprises a base, an air cylinder is installed below the base, a base is installed at the bottom of the interior of the base, a sample tube base is installed above the base, a sample tube is placed on the sample tube base, and the sample tube is connected with the air cylinder. A connecting port is formed in the upper portion of the interior of the base, the connecting port upwards extends out of the base to be connected with a container type pipeline module, a pressure sensor is installed on the surface of the right face of the container type pipeline module, and an air inlet device is installed on the container type pipeline module. According to the underground coal mine flame-retardant cable copper conductor detection device, through the arrangement of the integrated container type pipeline module and the air cylinder, an instrument automatically installs a sample tube to a connecting port, operation is more convenient, meanwhile, test errors caused by manual installation of the sample tube are avoided, through an integrated container type pipeline, no pipeline connector exists between valves, and the detection efficiency is improved. Gas leakage points are reduced and a temperature field is uniform.

This utility model provides a water tank assembly and a cooking appliance. The water tank assembly includes: a water tank with a receiving cavity; a water guide pipe disposed inside the water tank and communicating with the receiving cavity, the water guide pipe and the water tank being integrally formed; a water outlet pipe extending out of the water tank, the water outlet pipe and the water tank being integrally formed; and a connecting pipe, the water guide pipe being connected to the water outlet pipe through the connecting pipe. The technical solution of this application effectively solves the problems of complex assembly process and high processing cost of water tank assemblies in related technologies.

The invention discloses a graphene waste rare and precious metal dissolving reaction kettle device and a dissolving method. The graphene waste rare and precious metal dissolving reaction kettle device comprises a dissolving cavity, a feeding unit, a heating device, an ultrasonic generation device, a pH online monitoring sensor, a temperature online monitoring sensor, a flue gas online monitoring sensor, a discharging unit and a control unit. The inner wall of the dissolving cavity is coated with a graphene-containing anti-corrosion coating, the feeding port is provided with a feeding weight sensor and an adjusting valve, the first liquid inlet is provided with a first liquid inlet flow adjusting valve and a liquid inlet weight sensor, and the second liquid inlet is provided with a second liquid inlet flow adjusting valve and a flow sensor. The heating device and the ultrasonic generating device are suspended in a cavity or fixed on the top cover of the dissolving cavity according to requirements; the bottom double receiving disc guide rails are switched, and an air outlet is provided with a check valve; the control unit is connected with all the sensors and the execution piece, and feeding, temperature control, ultrasonic treatment, liquid drainage, cleaning and end point judgment are automatically completed. According to the invention, efficient dissolution of waste precious and rare metals is realized, automatic operation is realized, and labor intensity and cost are reduced.

This invention belongs to the field of welding technology and relates to a welding method for a large-size long girder mold made of nickel-iron alloy, comprising the following steps: 1. Preparing various plates of the mold; 2. Clamping the prepared plates on a machine tool and milling bevels at the joints of the plates; 3. Joining the plates together to form a mold blank, and welding the joints of the plates in layers and passes; 4. Annealing the welded mold blank; 5. CNC machining the annealed mold blank; 6. Inspecting the machined mold.

The utility model relates to the technical field of gate valves, in particular to a multifunctional gate valve which comprises a gate valve shell, a gate plate is arranged in the gate valve shell, and a valve rod used for controlling the gate plate is arranged at the upper end of the gate plate. An automatic cut-off mechanism is arranged at one end of the gate valve shell and comprises a cut-off shell, a cut-off valve seat, a cut-off valve element, an adjusting rod and a self-adaptive spring, the cut-off shell and the gate valve shell are integrally formed, and the cut-off valve seat is arranged at the end, away from the filter cartridge, in the cut-off shell; the cut-off valve element is arranged on one side of the cut-off valve seat, the adjusting rod is arranged in the cut-off valve element, the self-adaptive spring is arranged on one side of the cut-off valve element, and a cut-off sealing face is formed when the cut-off valve element is closed on one side of the cut-off valve seat.

The utility model relates to a swing check valve with a built-in slow-closing structure, which comprises a valve body, a valve clack, a rocker arm, a shifting fork and a valve cover, the rocker arm is connected with the shifting fork through a cylindrical pin, the rocker arm can drive the valve clack to rotate, a slow closing device is arranged in the valve body and comprises a supporting shaft, a support and a hook, and the support is of a hollow structure so that the valve clack can be normally opened and closed. U-shaped holes are formed in the two sides of the support, and the supporting shaft and the hook are placed in the U-shaped holes; an extension spring is arranged between the supporting shaft and the hook; and a sleeve is sleeved below the hook. When the valve is in a working state and the valve clack is converted into a closed state from an open state, the valve clack is slowly closed under the action of self weight, backflow pressure and the acting force of the extension spring, the valve clack is prevented from directly and rapidly falling back to be closed, the water hammer effect is avoided, and the service life of the valve is prolonged.

This utility model discloses an electrolyzer for a water electrolysis hydrogen production device, comprising a tank body and a sealing cover. A front-end plate is located on the left side of the tank body, and a rear-end plate is located on the right side. Multiple bipolar plates are fixedly arranged at intervals inside the tank body. Between adjacent components—between the front-end plate and the first bipolar plate, between each bipolar plate, and between the last bipolar plate and the rear-end plate—a porous anode electrode, a diaphragm, and a porous cathode electrode are sequentially sandwiched, forming multiple electrolysis chambers. Each electrolysis chamber has an electrolyte inlet at its rear and an anolyte outlet and a catholyte outlet at its front, corresponding to the anode and cathode flow fields, respectively. This utility model provides a short-range, directional flow channel for each reaction unit by setting independent electrolyte inlets and anolyte outlets at the front. This design ensures that the electrolyte can be rapidly and uniformly supplied to each electrode surface, improving current efficiency and saving energy.

The utility model relates to the technical field of feeding device, specifically disclose a kind of electrolytic copper plate vacuum chuck feeding device based on PLC control, including feeding rack, the upper end surface of feeding rack is provided with adsorption mechanism, the adsorption mechanism includes the installation gap of being passed through and being set in the upper end surface of feeding rack, the inside installation of the installation gap is electric trolley, through the sponge vacuum chuck of polyurethane or rubber foamed material with microporous closed cell structure, can let vacuum chuck better contact copper plate, reduce intermediate air leakage point, ensure that vacuum pump is extracted to the vacuum pressure value of requirement setting, copper plate is stably adsorbed, prevent the problem that it does not suck or copper plate falls in lifting process, by adding a time command program in PLC controller, the time, position, operating instruction in whole action process of vacuum chuck can be strictly controlled, reach the time of feeding speed, can adjust the fast and slow of feeding at any time, greatly improve production efficiency.

The present application relates to the technical field of measurement, and particularly provides a true density detection device, which aims to solve the problems of high cost and many leakage points of a true density instrument for realizing positive and reverse air intake. To this end, the present application provides a true density detection device, which comprises an air path module, the air path module comprising a buffer bin, a sample bin and an expansion bin, the buffer bin being in communication with an air inlet and an air outlet of the air path module at the same time, the volume of the buffer bin being smaller than the volume of the sample bin and the expansion bin; the sample bin and the expansion bin are in communication with the buffer bin, and the sample bin and the expansion bin can only be in communication through the buffer bin. Through the above setting, in the case of positive air intake or reverse air intake, the air intake can first enter and fill the buffer bin, and then enter the sample bin. Since the volume of the buffer bin is very small, the pressure difference between the two bins will be quickly balanced, which can effectively avoid blowing up the powdery sample, and there is no need to set a proportional valve, which is conducive to reducing the cost, simplifying the pipeline setting and reducing the leakage points.

This invention provides a composite material integral fuel tank structure with an integrated central wing, comprising: an upper wall panel, a lower wall panel, and a box-section frame; the box-section frame includes: a front beam, a rear beam, and several box-section ribs; the front beam and rear beam are placed side-by-side in parallel; several box-section ribs are installed side-by-side in parallel between the front beam and the rear beam, forming the box-section frame; the upper wall panel is installed on top of the box-section frame; the lower wall panel is installed at the bottom of the box-section frame; each pair of adjacent box-section ribs, along with the front beam, rear beam, upper wall panel, and lower wall panel, forms a closed space, which serves as one oil storage chamber of the integral fuel tank; several oil storage chambers are arranged side-by-side along the length direction of the upper wall panel / lower wall panel / box-section frame. This invention, through the rational design of the central wing frame and skin, can significantly reduce the risk of fuel tank leakage while reducing structural weight, and has good versatility.

The application discloses a self-balanced synchronous valve for a hydraulic control system, comprising a valve body, a first component, a second component and a third component arranged in the valve body for balancing oil load; the valve body is provided with an oil port A, an oil port B, an oil port A1, an oil port A2, an oil port B1 and an oil port B2; the first component comprises a valve sleeve, two valve cores arranged in the valve sleeve for horizontally moving synchronous load and a first screw plug for plugging; the second component and the third component are both provided with a conical valve core for horizontally moving and adjusting opening and closing; the conical head of the conical valve core of the second component is directed to the left, and the conical head of the conical valve core of the third component is directed to the right; a second sealing part corresponding to the conical head directed to the left of the conical valve core is arranged in a second cavity, and a first sealing part corresponding to the conical head directed to the right of the conical valve core is arranged in a third cavity. The application has the advantages of automatically balancing load and relatively low cost.

The invention relates to a suspension type tube plate welding machine head which comprises a machine head body, a welding torch, a welding torch adjusting mechanism, a wire feeding mechanism and a center positioning shaft are arranged at one end of the machine head body, and at least two supporting rod assemblies capable of being expanded in the radial direction are arranged around the machine head body. One end of the integrated box body is connected with the other end of the machine head main body, a lifting appliance is fixed to the top of the integrated box body, and a central pipe is arranged in the integrated box body in the axial direction in a penetrating mode; the center positioning shaft is connected with one end of the center pipe through an expansion sleeve assembly. A sliding ring assembly is arranged in the integrated box body and coaxially arranged on the periphery of the center pipe in a sleeving mode. And a water-gas sharing flow channel surrounding the slip ring assembly is also arranged in the integrated box body. By means of the modular design and the highly-integrated box body, the whole machine is compact in structure, the weight is obviously reduced, rapid hanging, flexible moving and accurate positioning can be achieved through the top lifting tool, and the adaptability to large workpiece multi-position welding and narrow space operation is greatly improved.

The utility model discloses a static precipitator high -frequency power integration radiator, including the cabinet and the heat dissipation box, the static precipitator high -frequency power and first heat exchanger are installed in the cabinet, first heat exchanger is equipped with first import, first export, the inside of heat dissipation box is equipped with second heat exchanger, and second heat exchanger is equipped with second import and second export, first import is connected with second export, and first export is connected with second import, and the heat exchange fin of second heat exchanger is the whole loop from second import to second export and is the integral structure, the bottom support frame is established in heat dissipation box bottom, and the bottom of heat dissipation box is provided with the air inlet, and the top of heat dissipation box is provided with fan assembly, and fan assembly is located the top of second heat exchanger. The cooling mode of the utility model combines the advantage of liquid cooling and air cooling, does not inhale the air containing dust particles into the power supply inside, and does not cause the influence to the electronic circuit that needs cooling in the power supply inside.

This utility model discloses a folded plate structure and its installation structure for a through-wall component, including an upper folded plate and a lower folded plate for covering the surface of the outdoor portion of the through-wall component and preventing it from being eroded by rainwater. The upper folded plate includes an upper connecting plate fixed to the wall, an upper top plate fixedly connected to the bottom of the upper connecting plate for covering the top surface of the outdoor portion of the through-wall component, and an upper outer plate fixedly connected to the side of the upper top plate away from the upper connecting plate for covering the side surface of the outdoor portion of the through-wall component. The lower folded plate includes a lower connecting plate fixed to the wall and a lower bottom plate fixedly connected to the top of the lower connecting plate for covering the bottom surface of the outdoor portion of the through-wall component. The side of the upper folded plate away from the wall is located on the outer side of the side of the lower folded plate away from the wall. This utility model has excellent waterproof capability, effectively extends the life of the through-wall component, avoids the risk of water leakage, reduces construction difficulty, and has high promotional value.

The invention relates to the technical field of household appliances, and provides a filter element assembly, a waterway board and an ice maker. The filter element assembly comprises a first filter element, a second filter element and a waterway plate, the waterway plate comprises a plate body, and the plate body is provided with a front water inlet connector, a rear water inlet connector, a rear water outlet connector and a front water outlet connector which are used for being connected with the first filter element; a wastewater connector, a pure water connector and an incoming water connector which are connected with the second filter element are formed in the plate body; the plate body is provided with a first communicating waterway and a second communicating waterway, the incoming water interface is communicated with the front water outlet interface through the first communicating waterway, and the pure water interface is communicated with the rear water inlet interface through the second communicating waterway; the first communicating water way and the second communicating water way extend and are distributed along a straight line. Complex internal connecting pipelines are integrated into a whole through the waterway plate, so that a plurality of independent pipe joints and winding hoses are omitted, the structure of the filter element assembly is very compact, potential leakage points are greatly reduced, and the reliability is improved.

The integrated water collecting cup comprises a water collecting cup body, a washing water path is integrally arranged on the side portion of the water collecting cup body, a washing pump is arranged on the washing water path, a drainage water path is integrally arranged at the bottom of the water collecting cup body, a drainage pump is arranged on the drainage water path, and a spraying arm water path is integrally arranged at the top of the water collecting cup body. The washing waterway communicates with the spraying arm waterway, and the washing waterway and the drainage waterway communicate with an inner cavity of the water collecting cup body. The washing water path, the drainage water path and the spraying arm water path are integrated on the water collecting cup body, so that when the water collecting cup, a drainage pump and a washing pump are installed, connection components such as water pipes and hoops are not needed, water leakage points are reduced, the installation efficiency is improved, and the inner space of the dish washing machine can be made to be more compact; besides, the spraying arm water path is integrally arranged at the top of the water collecting cup body and communicated with the upper spraying arm and the lower spraying arm, so that an independent spraying arm water path is not needed, and the compactness of the internal space of the dish washing machine is further improved.