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220results about How to "No jamming" patented technology

Incremental electro-hydraulic digital flow control valve with double valve cores rotating oppositely

The invention discloses an incremental electro-hydraulic digital flow control valve with double valve cores rotating oppositely. The control valve is characterized in that a valve body is square outside and circular inside, an oil inlet hole and an oil outlet hole are formed in the outer surface of the valve body and communicated with an annular oil inlet groove and an annular oil outlet groove in the circular-arc inner surface of the valve body respectively, an inner valve core and an outer valve core are both in a cylinder foot cup shape, the open end of the inner valve core is inserted in the open end of the outer valve core, the inner valve core and the outer valve core are installed inside the valve body together, and the inner valve core, the outer valve core and the valve body are kept coaxial; fan-shaped oil inlet holes and fan-shaped oil outlet holes are formed in the cylindrical surfaces of the inner valve core and the outer valve core, and respectively connected with the oil inlet hole and the oil outlet hole in the outer surface of the valve body through the annular oil inlet groove and the annular oil outlet groove in the inner surface of the valve body; the closed ends of the inner valve core and the outer valve core are provided with cylindrical shafts which penetrate through the left end cover and the right end cover of the valve body after passing through a bearing, and respectively connected with a stepping motor. Compared with an existing incremental sliding type digital flow valve, the digital valve disclosed by the invention has higher resolution ratio, dynamic response speed and flow control accuracy.
Owner:HUAIHAI INST OF TECH

Composite clamping device for rows of pipes

The invention relates to a composite clamping device for rows of pipes. The composite clamping device comprises a fixed clamping device and a floating clamping device which have the same structure, wherein the floating clamping device and the fixed clamping device are connected through a tool retracting device; the fixed clamping device comprises horizontal clamping oil cylinders fixed on the two sides of a box; the two horizontal clamping oil cylinders are connected with synchronous racks through connecting rods; the connecting rods are meshed with a synchronous gear on the upper and lower sides; a vertical clamping device slidably connected with vertical guide posts is arranged over the box; the vertical guide posts are fixed on the box; a vertical clamping oil cylinder is fixed under the box; the vertical clamping oil cylinder and the vertical clamping device are connected to a vertical connecting frame; and saw blade retainers and the tool retracting device are arranged on the vertical clamping device. Rows of steel pipes can be horizontally and vertically clamped, the stability of the lower half part of a saw blade is kept by the saw blade retainers, and the composite clamping device has the advantages of simple and compact structure, good clamping effect, capability of retracting a tool and realizing automatic control, and the like.
Owner:CHINA NAT HEAVY MACHINERY RES INSTCO

Double-track slip support structures for large-span net rack assembly bed-jig platform

Provided are double-track slip support structures for a large-span net rack assembly bed-jig platform. Two sides of a net-rack span are correspondingly equipped with the double-track slip support structures. Each double-track slip support structure comprises a lateral slip steel rail system and a vertical slip steel rail system and is characterized in that each lateral slip steel rail system comprises multiple concrete columns (1), lateral slip steel rail blocking beams (3) and a lateral slip steel rail (5); the vertical slip steel rail system comprises a bed-jig spherical-hinge support bracket (8) and a vertical slip steel rail (12), wherein the bed-jig spherical-hinge support bracket and the lateral slip steel rail (5) are correspondingly arranged; and a bed-jig spherical-hinge support (7) is accommodated in the upper center of the bed-jig spherical-hinge support bracket. Each double-track slip support structure comprises the lateral slip steel rail system and the vertical slip steelrail system. A device is simple in structure and convenient in manufacture. Each lateral slip steel rail system and each vertical slip steel rail system are stable in structures. Therefore, the net-rack bed-jig platform smoothly and stably slips so that the advantage of improving slip engineering efficiency is acquired.
Owner:MCC5 GROUP CORP SHANGHAI

Garbage feeder

The invention discloses a garbage feeder, which comprises a machine frame, a conveying device and a guiding tank, wherein the conveying device is arranged on the machine frame; and the guiding tank is fixed on the machine frame and positioned above and on the right side of the conveying device. The garbage feeder is characterized by also comprising a blending device and a feed level feedback device. The machine frame comprises supporting posts, a connecting cross beam and supporting wheel bearers, wherein 1 to 3 supporting wheel bearers are used. Each feeding plate of the conveying device hasa roller support, the number of the roller supports is the same as that of the supporting wheel bearers, and each roller support is rotationally connected with a corresponding supporting roller. The supporting roller of each corresponding feeding plate is contacted with a supporting wheel bearer in a rolling manner. The blending device comprises a main frame body and comb teeth. The comb teeth are arranged on the main frame body. The blending device is arranged in the middle of the left and right direction of the machine frame. The comb teeth are positioned above the conveying device. The feed level feedback device is transversely spun over the guiding tank from the front to the back and is positioned above the part, which is on the right side of the blending device, of the conveying device.
Owner:江苏金陵环保科技有限公司

Metal hard sealing butterfly valve with moving valve seat

InactiveCN104864106AEnsure bi-directional sealing performanceImprove sealingLift valveValve housingsEngineeringButterfly valve
Provided is a metal hard sealing butterfly valve with a moving valve seat. A first metal expansion joint is connected between the front end of the round sealing valve base and a valve body, a second metal expansion joint is connected between the rear end of the round sealing valve base and a valve body flange, and a valve seat driving device is connected between the round sealing valve seat and the valve body and drives the round sealing valve seat to move left and right along the axis of the valve body. When the valve is in the closed state, the round sealing valve seat moves to the position where the round sealing valve seat is connected with a valve plate in a sealing mode, and when the valve is in the open state, the round sealing valve seat moves to the position where the round sealing valve seat is separated from the valve plate. The metal hard sealing butterfly valve has the advantages that the two-way pressure bearing and sealing performance is achieved, and the effect of the valve seat driving device can guarantee the sealing specific pressure of a sealing pair; the spherical surface or regular conical surface metal hard sealing pair is adopted for the valve plate and the valve seat, the machining process is simple, the sealing pair can achieve surface contact easily, and the interchangeability of the sealing structure is good; the sealing valve seat is of a horizontal moving structure, and therefore the opening or closing movement is reliable.
Owner:LIUZHOU IRON & STEEL

Temporary plugging workover fluid for low-pressure carbonate reservoir gas well and preparation and application method of temporary plugging workover fluid

The invention discloses a temporary plugging workover fluid for a low-pressure carbonate reservoir gas well and preparation and an application method of the temporary plugging workover fluid. The temporary plugging workover fluid is composed of two slugs, wherein one is a low-solid phase water-locking type temporary plugging fluid slug, and mainly plays roles of forming a temporary plugging layerat a blasthole, bearing pressure of an upper fluid column and balancing formation pressure difference; the other slug is a water-based anti-swelling inhibitor slug, and mainly plays a role of furtherreducing damage caused by a small amount of workover fluid entering the reservoir due to micro-leakage. The temporary plugging workover fluid provided by the invention has the characteristics of lessleakage, small reservoir damage, strong pressure bearing capacity and water-locking capacity, good universality, non-toxicity, harmlessness, convenient construction, easy flowback, high safety, environmental protection and the like, is mainly used for temporarily plugging and killing the well in the carbonate reservoir during workover, is particularly suitable for workover of the low-pressure carbonate reservoir gas well having tubular columns with packers, and can reduce the damage of the workover fluid to the formation.
Owner:XI'AN PETROLEUM UNIVERSITY

Automatic press-fit recovery storage device of pop-top can

The invention discloses an automatic press-fit recovery storage device of a pop-top can. The automatic press-fit recovery storage device comprises a feeding assembly, a pressing-fit bin, a driving assembly and a storage bin, wherein the driving assembly comprises a motor bin and a push rod, the two sides of the motor bin are fixedly connected with the storage bin, the top of the storage bin is connected with a base plate through a bolt, and the top of the base plate is fixedly connected with a second supporting base; and the second supporting seat is fixedly connected with the pressing-fit bin, a first notch is formed in the top of the pressing-fit bin, moreover, a second notch is formed in the bottom of the pressing-fit bin, the first notch is aligned with the feeding assembly, the push rod penetrates through the first supporting seat and the pressing-fit bin in sequence and then is fixedly connected with a pressing-fit block. According to the device, the structure is simple, the assembly is convenient, the feeding is stable, a rotary table is driven by a motor to rotate, so that the reciprocating motion of the push rod is realized; and the pop-top can can be automatically droppedafter being compressed to a proper size, the rotation speed of the motor is controlled, the speed and the acting force of the pressing-fit block can be changed to extrude the pop-top can, and the device can be widely applied to pop-top can press-fit recovery with different materials.
Owner:程建玲

Solid-liquid separation method and device for multi-material anaerobic fermentation liquid containing kitchen wastes

The invention discloses a solid-liquid separation method and device for multi-material anaerobic fermentation liquid containing kitchen wastes and belongs to the technical field of kitchen waste treatment. A first discharging hole of a filter press is connected with a feeding hole of an oil-water separation tank by virtue of a pipeline; an overflow port of the oil-water separation tank is connected to a first conditioner by virtue of a pipeline; a submersible sewage pump is arranged in the first conditioner; the discharging hole of the submersible sewage pump is connected with a feeding hole of a multi-disk screw thickener; a second discharging hole of the multi-disk screw thickener is connected to a second conditioner by virtue of a pipeline; the second conditioner is connected with a feeding hole of a plunger pump by virtue of a pipeline; a discharging hole of the plunger pump is connected with a feeding hole of a plate-and-frame filter press; a residue outlet collection bucket of the plate-and-frame filter press is connected with the feeding hole of a residue delivery screw; the discharging hole of the residue delivery screw is connected with a residue box. Aiming at the material characteristics, the problems generated during operation of the original anaerobic fermentation liquid solid-liquid separation equipment with participation of kitchen wastes are gradually solved, the operating stability is improved, the treatment effect is ensured, the operating cost is reduced, secondary pollution is reduced, and the solid residues obtained by solid-liquid separation meet the national standard.
Owner:BMEI +1

Descend control device

The invention relates to a descend control device. The descend control device comprises a descend control device body, wherein the descend control device body is formed by communicating a material feeding pipe and a material discharging pipe which are abreast placed, a cleaning material flexible door is arranged at the bottom end of the material feeding pipe, a slow flow opening is formed in the middle portion of the material feeding pipe, connecting flanges are all fixed on the bottom portion of the material discharging pipe and the top portion of the material feeding pipe, the connecting flanges are used for slow flow effect in the middle portion of an articulated chute, the connecting flanges are arranged at the top portion of the material feeding pipe, a slipstream opening is formed at the bottom portion of the material discharging pipe, the slipstream opening is used at a material discharging opening of the articulated chute, an observation flexible door is further arranged on the material feeding pipe, the observation flexible door can be favorable to adjusting and observing flow speed of the materials and further can timely clean an inner chamber, and floppy concretes are filled at a buffering portion between the cleaning material flexible door and the slow flow opening. On one hand, the descend control device can prevent free falling body of the concretes from producing isolation of frameworks and the materials, and on the other hand avoid severe damages of pipe walls and a belt conveyor below the pipe caused by a high fall.
Owner:河南省水利第二工程局集团有限公司 +1

Perishable garbage pretreatment device and perishable garbage pretreatment method

The invention relates to a perishable garbage pretreatment device. The device comprises a filtrate collecting tank; a deslagging mechanism; a homogenizing buffer tank; and a material receiving system,a sorting machine, a crushing and pulping system, a slurry tank, a sediment and floating object removing system, an intermediate tank, an oil-water separation system and a grease intermediate tank which are connected together in sequence. The inlet end of the homogenizing buffer tank is connected with a water-phase substance outlet of the oil-water separation system; the inlet end of the grease intermediate tank is connected with an oil-phase substance outlet of the oil-water separation system; the filtrate collecting tank is used for receiving liquid flowing out of the material receiving system, the output end of the filtrate collecting tank is connected with the inlet end of the intermediate tank, and a slag outlet of the sorting machine, a slag outlet of the crushing and pulping systemand a slag outlet of the sediment and floating object removing system are all connected with the inlet end of the deslagging mechanism. The invention further relates to a method for pretreating perishable garbage through the perishable garbage pretreatment device.
Owner:浙江卓尚环保能源有限公司

Intelligent door lock controlled by clutch-type motor drive without lodging

The invention relates to an intelligent door lock driving controlled by a clutch type motor, mainly comprising a front panel, a handle and a linear motion telescopic actuator, the handle is axially connected with a handle spline, the output shaft of the linear motion telescopic motor is connected with one end of a clutch driving control block, the other end of the clutch driving control block is axially connected with the front panel through the shaft hole of the clutch control block, the clutch driving control block is provided with a clutch control track; a mechanical lock core is mounted in the handle and fixedly connected with a lock core shifting fork including a connecting piece and a shifting fork head, a square rod key fastener includes a hole for inserting a square rod, a clutch fastener top block and a locating corner, a clutch fastener includes a clutch fastener main shaft hole, a clutch control shaft, a clutch top head and a key top head, the clutch fastener main shaft hole is axially connected with the handle spline through a clutch fastener shaft pin, the clutch control shaft is mounted on and slidably connected with the clutch control track. The invention has fast startup speed, flexible performance and reliable safety, and easy-block and easy-jamming phenomena occurred on a high-grade intelligent lock hardly occur.
Owner:夏士林

External air reservoir or tank linkage synchronous lifting table based on principle of gas spring

The invention relates to an external air reservoir or tank linkage synchronous lifting table based on the principle of a gas spring. The external air reservoir or tank linkage synchronous lifting table includes a table top (1) and a base (4), and is characterized in that the table top is installed on the base through at least two lifting legs (3) made based on the principle of the air spring, each lifting leg is composed of a piston rod (77), a cylinder body (33) and a power air cylinder or tank (57), a rod cavity of one of the cylinder bodies (33) communicates with storage cavities of the power air cylinders or tanks (57) as the driving power while communicating with a rodless cavity of another one of the cylinder bodies (33), a rod cavity of the last cylinder body (33) communicates with a storage cavity of the last power air cylinder or tank (57) while communicating with a rodless cavity of the first cylinder body (33), high-pressure gas in power cavities 99 of the power air cylinders or tanks (57) provides power to lift the table top, and the high-pressure gas is compressed and stores energy when the table top descends. According to the external air reservoir or tank linkage synchronous lifting table, the structure is simple, the cost is low, manufacturing is convenient, and the synchronous lifting and arbitrary height locking properties are good.
Owner:乔彬

Concrete vertical conveying pouring system

The invention discloses a concrete vertical conveying pouring system which is applied to a vertical high fall concrete conveying scheme. The concrete vertical conveying pouring system comprises a belt conveyor, a box pipe and a concrete distributing machine. An output end of the horizontally arranged first belt conveyor is arranged above an inlet at the upper portion of the box pipe which is vertically arranged, an outlet at the lower portion of the box pipe is arranged above an input end of a second belt conveyor which is horizontally arranged, an output end of the second belt conveyor is connected with the concrete distributing machine, chutes are arranged at tow ends of the concrete distributing machine, and a descent control device is respectively arranged on the outlet at the lower portion of the box pipe and an outlet in the middle of the box pipe. In the vertical conveying process of the concrete with high fall and high slope, the concrete vertical conveying pouring system avoids aggregate separation caused by free falling of the concrete on one hand, and avoids severe damage caused by the belt conveyor below a pipe wall and a pipe caused by high fall on the other hand. Aggregate in the pipeline cannot freely fall off, and the aggregate can be in a fluid state, flowing in the pipeline equals to secondary blending, so that the concrete is evenly mixed.
Owner:河南省水利第二工程局集团有限公司 +1

Steam temperature and pressure reducing device

The invention discloses a steam temperature and pressure reducing device which comprises an electric temperature and pressure reducing valve which is provided with a direct stroke electric actuator which is connected to a DCS control cabinet, the DCS control cabinet is connected to a computer, one side of the electric temperature and pressure reducing valve is provided with a steam inlet, a pressure sensor and a temperature sensor are arranged on the steam inlet, the other side of the electric temperature and pressure reducing valve is connected to a steam mixing pipe through a temperature reducer which is provided with a filter, an annular hole plate is arranged in the steam mixing pipe, and the inner side of the steam mixing pipe is provided with a protection pipe. A water inlet in the steam mixing pipe is provided with a nozzle which is provided with a filter, the nozzle is connected to a check valve through a pipeline, a restricting orifice plate is arranged in the pipeline, and the check valve is connected to a direct stroke electric actuator 2 through a pipe. The steam temperature and pressure reducing device has the advantages of simple structure, low manufacturing cost, convenient installation, uniform atomization particles, high precision, no clogging and stable and reliable work, and the costs of investment, operation and maintenance are greatly reduced.
Owner:珠海新源热力有限公司

Shaft end bevel gear forging mould

The invention discloses a shaft end bevel gear forging mould which comprises an upper mould, a lower mould, a pressing plate, a mandrel, a base plate, a mould base and an ejector rod. An axial through hole in clearance fit with the ejector rod is formed in the middle of the base plate, the base plate is flatly arranged at the bottom of a cavity in the upward end face of the mould base, the lower mould is inserted into the cavity of the mould base and axially positioned by taking the base plate as a base, the pressing plate sleeved on the outer wall of the lower mould is connected with the mould base, the mandrel is axially inserted into a mould cavity of the lower mould from top to bottom until the base plate is axially limited, the ejector rod is an elongated rod relative to the mandrel and penetrates the through hole in the middle of the base plate, the ejector rod and the mandrel are connected into a whole, and the gravity center of the structure is low, so that the mandrel is conveniently reset after a workpiece is ejected. As the diameter of the ejector rod is much smaller than that of the mandrel, the hole for matching the ejector rod with the base plate is also small, the contact area of the mandrel and the base plate is enlarged, plastic deformation of the base plate is avoided in the forging process, and the forging quality of the workpiece is ensured.
Owner:JIANGSU PACIFIC PRECISION FORGING +1

Seawater tower for self-elevating drilling platform and self-elevating drilling platform

The invention discloses a seawater tower for a self-elevating drilling platform and the self-elevating drilling platform. The platform comprises a pile leg and a pile shoe. The seawater tower comprises a sliding rail, a lifting pipe, an immersible pump and an auxiliary seawater supply device. The sliding rail is arranged on a chord pipe of the pile leg. A plugging device is arranged at the bottom of the sliding rail, and the sliding rail is provided with a pin hole. The auxiliary seawater supply device is arranged on the top of the lifting pipe. The immersible pump is provided with a protection pipe. The lifting pipe is provided with a sliding locking device, and the immersible pump is provided with a sliding locking device. The sliding locking devices are used for being matched with the sliding rail to achieve sliding or locking of the immersible pump and the lifting pipe. The plugging device is used for protecting the pile shoe against damage when the immersible pump disengages. The protection pipe is used for preventing the immersible pump from being damaged by the external environment. The immersible pump, the lifting pipe and the auxiliary seawater supply device are used for jointly achieving seawater supply of the platform. The platform further comprises the seawater tower. The capability of resisting the severe weather through the seawater tower is improved, seawater supply continuity of the platform in the severe weather is ensured, and accordingly normal drilling work of the platform is not affected.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Locating, self-locking and unlocking method and apparatus for storehouse storage and transportation platform

The invention relates to a positioning, self-locking and unlocking method of a storage and transportation platform of a warehouse and a device, which also relates to a transferring and storage method of a large-sized cargo and a device. The invention comprises a shelf, a storage and transportation platform, a positioning block and a positioning hole which is matched with the positioning block andarranged at the bottom of a short leg; a bolt pin hole is arranged on the positioning block and a bolt pin which is fixed at one end of a connecting rod is matched with the bolt pin hole, while the other end of the connecting rod is flexibly connected with the storage and transportation platform by a hinge; the connecting rod is fixedly connected with an unlocking bar at the end provided with thehinge, while the other end of the unlocking bar is suspended in a fork space; a rigid body formed by the bolt pin, the connecting rod and the unlocking bar is connected with a return spring; and the other end of the return spring is fixed on the storage and transportation platform. The invention solves the slide problems of the storage and transportation platform and the goods effectively and does not have blocking resistance phenomenon for unlocking when outputting goods. The device has simple structure and extremely low cost, can be applied to new building and rebuilding of the warehouse, solves the slide problems of the storage and transportation platform and the goods, and makes contribution to disaster prevention and reduction.
Owner:BEIJING TONGXU ELECTRICAL & MECHANICAL EQUIP CO LTD +1
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