33results about How to "Block return" patented technology

The invention relates to a monodispersed spherical titanium dioxide core-shell structure composite material and a preparation method thereof. The monodispersed spherical titanium dioxide core-shell structure composite material comprises an inner core formed by monodispersed carbon spheres and a titanium dioxide shell layer covering the inner core, wherein noble metal is doped in the titanium dioxide shell layer.

A tubular binding apparatus for surgical operation features its additional mechanism for preventing the secondary triggering in order to improve its usability greatly. Said additional mechanism may be the improved structure of safety rod and pull plate and additionall use of convex block and stop block in its handle, or the coordinate mechanism between the pin driving rod and casing, safety bolt and fixing rod, or additional use of creased ring in the pin cabin.

A lamp unit of a projector system and a display device using the same, includes a lamp; a reflector for reflecting a light generated from the lamp; and a cover glass mounted at an opening of the reflector, and the cover glass having a blocking device for obstructing a light incident from an optical system, disposed in front of the light with respect to a light projecting direction, to the reflector. Accordingly, a light irradiated to the lamp, which increases the temperature of an electrode welding part of the lamp, can be blocked, thereby improving a lifespan of the lamp.

The invention discloses a damping buffer base of a machine tool. The damping buffer base comprises a sectional layer, a damping layer and a compression resistant layer which are arranged from top to bottom, wherein the sectional layer consists of a plurality of sheet boards which are spliced with one another; the damping layer comprises an upper framework tank; the sectional layer is positioned in the upper framework tank; raised sheets are arranged between the sectional layer and the inner bottom surface of the upper framework tank; each sheet board corresponds to one raised sheet; the compression resistant layer comprises a lower framework tank; the upper framework tank is positioned in the lower framework tank; and a spring is arranged between the upper framework tank and the lower framework tank. Compared with the prior art, the damping buffer base of the machine tool can fix and bear the whole machine tool to absorb and damp vibrations generated during working operation of the machine tool, so that precision during workpiece processing can be improved to avoid deviation caused by vibrations, and influences of frequent vibrations on precision parts in machine tool equipment can be reduced, and therefore, the service life of equipment is prolonged.

The invention relates to a yarn cylinder group type dust collection device capable of effectively preventing dust from returning. The yarn cylinder group type dust collection device is characterized by comprising a strip-shaped dust collection cover, a dust filter structure communicated with the dust collection cover through a dust collection pipe, and a suction fan arranged in the dust collection pipe; a yarn cylinder bracket and a plurality of yarn cylinder vertical shafts are arranged inside the dust collection cover; at least two parallel filter plates are arranged in the dust filter structure; the filter plate which is nearest to an inlet of the dust filter structure is a first filter plate; the first filter plate is parallel to at least one of the four lateral faces in a filter direction; an interval is reserved between the first filter plate and the wall face of the shell, which is parallel to the first filter plate; and at least one filter plate is parallel to all the four lateral faces in the filter direction, and is connected with the wall face of the shell in a sealed manner. The dust collection range of the yarn cylinder group type dust collection device provided by the invention covers an entire yarn cylinder group; and the filter plate or a baffle with the interval with the wall face of the shell is arranged in front of the last filter plate in the dust filter structure in the filter direction, so that the dust returning phenomenon can be effectively avoided.

The invention discloses a damping and buffering base. The damping and buffering base comprises a segmenting layer, a damping layer and a compression resisting layer which are arranged from top to bottom; the segmenting layer is formed by splicing multiple sheet plates; the damping layer comprises an upper frame pool, the segmenting layer is located in the upper frame pool, and protrusive sheets are arranged between the segmenting layer and the inner bottom face of the upper frame pool; and the compression resisting layer comprises a lower frame pool, slope columns are arranged on the lower surface of the upper frame pool, and slope bases are arranged on the inner bottom face of the lower frame pool. Compared with the prior art, the two-way damping and buffering base for a machine tool canfix and bear the whole machine tool, vibration generated when the machine tool works and runs is absorbed and buffered, shake from the ground can be effectively absorbed through the compression resisting layer, the condition that the shake from the ground is transmitted to the machine tool is avoided, therefore, on one hand, the workpiece machining precision can be improved, deviation brought by vibration is avoided, and on the other hand, influences of frequent vibration on precise parts in machine tool equipment can be reduced, and the service life of the equipment is prolonged.

The invention relates to the technical field of downhole tools, in particular to a cement retainer. The cement retainer includes a first slip assembly, a central pipe, a lower joint, a first conical sleeve, a rubber cylinder and an inner sliding sleeve; the cement retainer can be used with a conventional setting tool as a set, connected with the setting tool through an adapter and lowered to a designated position, and then setting is conducted by the setting tool; after setting is completed, the cement retainer is fixed at a predetermined setting depth in a shaft, a matched insertion pipe is placed downwards to push the inner sliding sleeve so that a third liquid passing hole can be communicated with a first liquid passing hole and a second liquid passing hole, then cement is injected intothe shaft through the three liquid passing holes, and plugging operation at a high-pressure water layer is completed; after the plugging operation is completed, the insertion pipe is unplugged and drawn back to drive the inner sliding sleeve move, the inner sliding sleeve moves to break the communication between the first liquid passing hole and the third liquid passing hole, and the problem of liquid backflow can be effectively avoided.

The invention discloses a two-way damping buffer base of a machine tool. The two-way damping buffer base comprises a sectional layer, a damping layer and a compression resistant layer which are arranged from top to bottom, wherein the sectional layer consists of a plurality of sheet boards which are spliced with one another; the damping layer comprises an upper framework tank; the sectional layer is positioned in the upper framework tank; raised sheets are arranged between the sectional layer and the inner bottom surface of the upper framework tank; the compression resistant layer comprises a lower framework tank; the lower surface of the upper framework tank is provided with slope columns; and slope surface pedestals are arranged on the inner bottom surface of the lower framework tank. Compared with the prior art, the two-way damping buffer base of the machine tool can fix and bear the whole machine tool to absorb and damp vibrations generated during working operation of the machine tool, and vibrations from the ground also can be effectively absorbed by the compression resistant layer and are prevented from being transmitted to the machine tool, so that precision during workpiece processing can be improved to avoid deviation caused by vibrations, and influences of frequent vibrations on precision parts in machine tool equipment can be reduced, and therefore, the service life of equipment is prolonged.

The invention provides an ecological restoration method for a quarry in a mining area, and belongs to the field of ecological restoration. The ecological restoration method for the quarry in the mining area comprises the following steps: leveling the quarry, crushing waste ores to obtain ore powder, and soaking the obtained ore powder with an aqueous solution containing sulfuric acid to obtain pretreated ore powder; adding water and an agglomerating agent into the pretreated ore powder, and shearing to obtain a slurry; laying an activated carbon layer, the slurry and an isolation layer composed of coal gangue and fly ash in the leveled quarry in sequence, and compacting while spraying water; and then carrying out operations such as borrowed soil backfilling, crop planting and the like. Themethod is a systematic and targeted restoration method, multiple measures are simultaneously taken, effects of recycling, restoring, weakening the toxicity of the mining area, enriching the nutritionof the mining area, increasing the diversity of objects in the mining area and the like are integrated, the abandoned mining area is converted into a usable area after long-term restoration, the added borrowed soil is prevented from being eroded, and normal growth of planted crops is guaranteed.

The invention relates to a yarn cylinder set dust-collection apparatus characterized by comprising a long-stripped dust collection cover, a dust filtering structure communicated with the dust collection cover via a dust collection pipe and a suction ventilator disposed in the dust collection pipe. A yarn cylinder rack and a plurality of yarn cylinder vertical shafts are placed in the dust collection cover; a yarn outlet hole is formed in the side wall of the dust collection cover; and the dust filtering structure comprises a case type housing with one opened end, at least two filtration plates parallel to each other and disposed in the housing, and an air-out net arranged in the opened end of the housing. The dust collection range of the yarn cylinder set dust collection apparatus can cover the whole yarn cylinder set; work space is sealed, so great dust collection effect is achieved; and with the yarn cylinder rack and the yarn cylinder vertical shafts, cooperation with other yarn cylinder fixing device can be avoided, so a structure is simplified and convenient installation is realized.

The invention discloses a self-cleaning cooling structure of a Roots vacuum unit, and the self-cleaning cooling structure is used for solving the internal corrosion problem and the over-temperature parking problem of the Roots vacuum unit. The structure comprises an impurity removal part, a gas supply unit and a gas exhaust pipeline, wherein the impurity removal part is fixedly connected with a gas inlet cavity of a Roots vacuum pump for filtering impurities in working gas; clean air is introduced in a parking process for scouring parts in the pump, so that cleaning and cooling are realized; the gas supply part is fixedly connected with a gas suction cavity of the Roots vacuum pump; during working, clean cold air is introduced into the gas suction cavity for scouring a rotor of the vacuum pump, so that cleaning and cooling are realized; and the gas exhaust pipeline is fixedly connected with a gas exhaust cavity of the Roots vacuum pump for conveying the working gas into a downstream vacuum container, so that gas flow is prevented from returning to the pump cavity during parking. The self-cleaning cooling structure disclosed by the invention can be applied to the vacuum unit for removing complex component gas by sucking, so that damages, on the vacuum unit, of corrosive gas are reduced; and meanwhile, the temperature of the vacuum unit is reduced, and the service life of the vacuum unit is prolonged.

The invention relates to a four-port circulator for single-fiber bidirectional communication and an optical module, the four-port circulator comprises a circulator core, a first port, a second port, a third port and a fourth port, the circulator core is used for transmitting a first polarized light signal incident from the first port to the second port and outputting the first polarized light signal from the second port, the circulator core is used for converting first polarized light incident from the second port into second polarized light through the polarization conversion assembly, transmitting the second polarized light to the third port and outputting the second polarized light from the third port, and the circulator core is used for transmitting the second polarized light incident from the second port to the fourth port and outputting the second polarized light from the fourth port; and an isolation device is arranged between the first port and the circulator core and is used for preventing the optical signal from returning to the first port. According to the four-port circulator, the application of coherent technology is realized, the isolation performance of stray light is improved, the assembly difficulty is small, the stability performance is good, and the integration level is high.

The invention discloses a rear end pumped miniaturized visible light wavelength range surface-emitting semiconductor laser comprising a pump light source, a collimating focusing lens group, a heat sink with a light through hole, a semiconductor gain chip, a reflection flat sheet, nonlinear crystal and a coupling output mirror which are arranged from the back to the front along the axial direction of the optical axis. The semiconductor gain chip comprises a reflecting film having high transmittance for the pump light and high reflectance for the fundamental frequency light and a quantum well active region. A film layer having high reflectance for the frequency doubled light and high transmittance for the fundamental frequency light is coated on the rear side of the reflection flat sheet. All the elements are arranged on the same axis which is also the optical axis of the laser resonant cavity so that the quality of the light beams outputted by the laser is enabled to be excellent, adjustment of the device is enabled to be easier than that of any other visible light laser, the mechanical performance of the device is quite stable, the rear end pump mode is combined with the linear structure, the device is enabled to be quite miniature and thus the laser has quite wide application in multiple desktop type comprehensive scientific research instruments.

The invention aims to provide an ascending coal gas dust blocker for solving the problems of purifying gas, prolonging the service lives of pipelines and equipment and balancing gas distribution. Dust blocking plates are arranged on a circular shell, air outlets are formed between the dust blocking plates, and the dust blocking plates are 'V'-shaped and bent inwards. The dust blocker is simple in structure and convenient for manufacturing and installing; through the dust blocker, the dust carried in the coal gas can be effectively blocked to a furnace body and discharged together with slag at the up-blowing stage; when the steam passes through the dust blocker at the down-blowing stage, the steam can be uniformly distributed, so that the original steam flowing mode is changed; and by reducing the dust in the ascending coal gas, the coal gas is purified, meanwhile, scouring to an ascending coal gas pipeline and a lining of a dust collector is relieved, safe and stable operation of equipment is ensured, and the operating cost is saved.

The invention discloses a synchronizer assembly which comprises two synchronous rings (1), a sliding toothed sleeve (2), three locating pin systems (3) and three lockpins (4), wherein the sliding toothed sleeve (2) is in a shift fork plate type structure; and each locating pin systems comprises two semicircular locating pins (5) and two bow springs (6). The synchronizer assembly disclosed by the invention has the advantages of gear release prevention, high synchronization speed, light weight, material conservation, energy conservation, long service life, short gear shift synchronization time and the like.

The invention relates to a photovoltaic-photothermal all-in-one machine. The photovoltaic-photothermal all-in-one machine comprises a base frame, a heat collecting pipe connected with the base frame and a photovoltaic panel which is arranged on the radial outer side portion of the heat collecting pipe and can rotate around the heat collecting pipe. The photovoltaic panel comprises a glass inner panel, a glass outer panel and a photovoltaic cell string arranged between the glass inner panel and the glass outer panel. The photovoltaic panel is provided with a photovoltaic working surface deviating from the heat collecting pipe, the glass inner panel is arranged on the side, facing the heat collecting pipe, of the photovoltaic cell string, and the glass outer panel is arranged on the side, deviating from the heat collecting pipe, of the photovoltaic cell string. A reflective coating is attached to the inner panel face, facing the photovoltaic cell string, of the glass inner panel, and therefore, the glass inner panel and the reflective coating jointly form a reflector with the reflective face facing the heat collecting pipe. The photovoltaic-photothermal all-in-one machine can realizephotovoltaic-photothermal switching, and is compact in structure, attractive in appearance and low in manufacturing cost.

The invention discloses a high-safety switch cabinet which comprises a cabinet door, a handle and a door frame. A spring bolt is connected onto the handle and is positioned on the inner side of the cabinet door, an elastic sheet is vertically arranged on the inner side of the cabinet door and is positioned below the spring bolt, a partition plate is arranged between the upper end of the elastic sheet and the cabinet door, a stop block is arranged on the side, which is far away from the cabinet door, of the elastic sheet and is provided with a slope surface which faces the door frame, and the door frame is provided with a pressure plate which faces the bottom of the elastic sheet. The high-safety switch cabinet has the advantages that the spring bolt can be prevented from deforming due to collision, and accordingly the cabinet door can be assuredly normally used.

The invention provides a floor connecting piece. The floor connecting piece includes a clamping part, a connecting part and a locking part, the clamping part and the locking part are connected throughthe connecting part, and the size of the connecting part is smaller than that of the clamping part and that of the locking part; the locking part includes a frame, springs, a movable baffle, a spiralelastic sheet and a push rod, and the movable baffle is located between two opposite side plates of the frame and is slidably connected with the frame; the springs are located between a bottom plateof the movable baffle and a bottom plate of the frame; and one end of the push rod is fixed to the bottom plate of the movable baffle, one end of the spiral elastic sheet is fixedly connected with thepush rod, the spiral elastic sheet is initially in a compressed state and is located between the two side plates of the movable baffle; and the initial state of the springs is a free state. The floorconnecting piece is used for splicing a floor, is convenient and easy to operate, can further save wood, and is convenient to disassemble. The floor is not damaged in the disassembly process, and thefloor can be directly used for secondary use without processing.

The invention discloses a gas furnace. The gas furnace comprises a burner (1), a burner base (2) and a bracket, wherein the burner (1) and the burner base (2) are connected integrally; the lower part of the burner base (2) is further connected with a gas pipe (3); a plurality of air inlet holes (4) are formed in the middle of the burner base (2); the bracket is arranged on the burner base (2); a furnace tray is arranged on the burner (1); a plurality of fire holes are formed in the furnace tray; the furnace tray is a concavely spherical furnace tray (5); the fire holes are long-waist-shaped holes (6); a tile-shaped cover (7) is arranged on each long-waist-shaped hole (6); an opening (8) is formed in each of two ends of each tile-shaped cover (7); the openings (8) close to the center of the concavely spherical furnace tray (5) pass through closed covers (9); the inner surface of each closed cover (9) is a quarter of a concave spherical surface. The gas furnace has the advantages of uniform combustion and high combustion efficiency.

The invention discloses a damping buffer base of a machine tool. The damping buffer base comprises a sectional layer, a damping layer and a compression resistant layer which are arranged from top to bottom, wherein the sectional layer consists of a plurality of sheet boards which are spliced with one another; the damping layer comprises an upper framework tank; the sectional layer is positioned in the upper framework tank; raised sheets are arranged between the sectional layer and the inner bottom surface of the upper framework tank; each sheet board corresponds to one raised sheet; the compression resistant layer comprises a lower framework tank; the upper framework tank is positioned in the lower framework tank; and a spring is arranged between the upper framework tank and the lower framework tank. Compared with the prior art, the damping buffer base of the machine tool can fix and bear the whole machine tool to absorb and damp vibrations generated during working operation of the machine tool, so that precision during workpiece processing can be improved to avoid deviation caused by vibrations, and influences of frequent vibrations on precision parts in machine tool equipment can be reduced, and therefore, the service life of equipment is prolonged.

The invention relates to the technical field of circulators, and provides a four-port circulator with multiple isolators, the four-port circulator comprises four ports, one port is an entrance port, one port is a compatible port with both input and output, the other two ports are emergent ports, and the isolators are arranged at the two emergent ports; optical signals incident from the incident port are emitted from the compatible port, and optical signals incident from the compatible port are respectively emitted from the two emergent ports. The invention further provides a coherent BIDI optical module which comprises the four-port circulator with multiple isolators. Compared with a three-port circulator, the four-port circulator has more port output, transmission of one more optical path is achieved, and therefore application of the coherent technology is achieved. The magnetic block is adopted to replace a magnetic ring, so that all devices can be borne, the assembly difficulty is reduced, the size is reduced, the reliability is improved, and the performance is more stable.

The invention belongs to the field of structural design, and relates to a mechanical diode element for displacement rectification and displacement signal unidirectional transmission. As a displacement rectifying element, the element can output positive and negative alternating displacement signals input by a positive electrode interface into a signal only having positive displacement at a negative electrode interface, and a displacement rectifying function similar to a full-wave rectifying effect of a semiconductor diode is provided. As an element for unidirectionally transmitting a displacement signal, the element only allows the displacement signal to be transmitted from the positive electrode interface A to the negative electrode interface B, but prevents the displacement signal from being transmitted back to the positive electrode interface A from the negative electrode interface B, so that a function similar to unidirectionally transmitting the signal by a semiconductor diode is provided. The functional element has wide application prospects in the fields of mechanical logic, mechanical calculation, equipment damping, intelligent detection and the like.

The present invention provides a microfluidic chip for enriching cells, the chip includes a lower layer chip 1, a middle layer chip 2 and an upper layer chip 3; the lower layer chip 1 includes an elution module 105, a buffer module 106, a specific binding module 107 and enrichment module 108; between the elution module 105 and the buffer module 106 is provided with a water-blocking gas permeable membrane 104; the elution module 105 is provided with a vertical buffer inlet 101; The channel is provided with a specific magnetic particle solution inlet 103 ; the middle-layer chip includes a filter module 201 and a cavity area 202 corresponding to the water-blocking gas-permeable membrane 104 . The present invention utilizes the multi-channel technology to achieve high throughput while being compatible with the flow restriction of subsequent chip modules, thereby reducing the sample loss of the connection of each module.

The invention discloses a ground embedded type two-way damping buffer base of a machine tool. The ground embedded type two-way damping buffer base comprises a sectional layer, a damping layer and a compression resistant layer which are arranged from top to bottom, wherein the sectional layer consists of a plurality of sheet boards which are spliced with one another; the damping layer comprises an upper framework tank; raised sheets are arranged between the sectional layer and the inner bottom surface of the upper framework tank; the compression resistant layer comprises a lower framework tank; the lower surface of the upper framework tank is provided with slope columns; slope surface pedestals are arranged on the inner bottom surface of the lower framework tank; and an outer fixed foundation is arranged on the lower framework tank. Compared with the prior art, the ground embedded type two-way damping buffer base of the machine tool can fix and bear the whole machine tool to absorb and damp vibrations generated during working operation of the machine tool, and vibrations from the ground also can be effectively absorbed by the compression resistant layer and are prevented from being transmitted to the machine tool, so that precision during workpiece processing can be improved to avoid deviation caused by vibrations, and influences of frequent vibrations on precision parts in machine tool equipment can be reduced, and therefore, the service life of equipment is prolonged.

The invention discloses an odor-resisting accumulated water treating device with a preformed hole and aims at solving the problems that accumulated water in a packing course is not convenient to drain, and odor and harmful gases are returned from a septic tank. The adopted technical scheme is that both a casing and a water sealing part are of shell-like structures of which upper parts and lower parts are opened; in addition, the water sealing part is inserted into the casing; the water sealing part and the casing are matched to form a water sealing structure of which the size is greater than 50mm; the accumulated water is drained from a draining hole of the water sealing part through the water sealing structure; a first connector for positioning and inserting a stand pipe is arranged at the lower end of the casing; a water sealing groove is formed in the upper end of the casing; the depth of the water sealing groove is greater than 50mm; a second connector for positioning and inserting the stand pipe is arranged at the upper end of the water sealing part; a water sealing plug board is arranged at the lower end of the water sealing part; the water sealing plug board is correspondingly inserted into the water sealing groove for matching to form a water sealing structure. The odor-resisting accumulated treating device disclosed by the invention can be widely applied to the field of treatment of the accumulated water in the packing course.

The invention discloses a self-cleaning cooling structure of a Roots vacuum unit, and the self-cleaning cooling structure is used for solving the internal corrosion problem and the over-temperature parking problem of the Roots vacuum unit. The structure comprises an impurity removal part, a gas supply unit and a gas exhaust pipeline, wherein the impurity removal part is fixedly connected with a gas inlet cavity of a Roots vacuum pump for filtering impurities in working gas; clean air is introduced in a parking process for scouring parts in the pump, so that cleaning and cooling are realized; the gas supply part is fixedly connected with a gas suction cavity of the Roots vacuum pump; during working, clean cold air is introduced into the gas suction cavity for scouring a rotor of the vacuum pump, so that cleaning and cooling are realized; and the gas exhaust pipeline is fixedly connected with a gas exhaust cavity of the Roots vacuum pump for conveying the working gas into a downstream vacuum container, so that gas flow is prevented from returning to the pump cavity during parking. The self-cleaning cooling structure disclosed by the invention can be applied to the vacuum unit for removing complex component gas by sucking, so that damages, on the vacuum unit, of corrosive gas are reduced; and meanwhile, the temperature of the vacuum unit is reduced, and the service life of the vacuum unit is prolonged.

The invention discloses a deterministic lateral displacement micro-fluidic chip for separating magnetic beads from in-vitro blood, and the deterministic lateral displacement micro-fluidic chip comprises inlets, outlets, and a separation cavity and a filtering cavity which are connected between the inlets and the outlets, wherein the inlets comprise a mixed liquid inlet for conveying mixed liquid to the separation cavity and two groups of buffer liquid inlets for conveying buffer liquid into the separation cavity, and the two groups of buffer liquid inlets are respectively positioned on two sides of the mixed liquid inlet; the outlets comprise a waste liquid outlet for discharging waste liquid and a blood outlet for discharging clean blood; the separation cavity is a separation area formed by a plurality of groups of triangular micro-columns which are arranged in a staggered manner; the filtering cavity is a filtering area formed by a plurality of groups of capturing units. According to the deterministic lateral displacement micro-fluidic chip for separating magnetic beads from in-vitro blood, the magnetic beads can be separated from the blood in a high-flux flow velocity state, and meanwhile, the magnetic beads and magnetic bead fragments are prevented from returning to the blood.

The invention relates to the technical field of dust particle detection, and discloses a dust particle detection device. The device comprises a shell in which a measurement cavity is formed, and the shell is provided with an exit port communicating with the measurement cavity; an attenuation part is connected with the shell; the attenuation part comprises an attenuation cylinder which is communicated with the measurement cavity and is used for limiting the laser stray light entering the attenuation cylinder from being reflected back into the measurement cavity, an attenuation piece which is used for absorbing and reflecting laser stray light entering the attenuation part from the measurement cavity, and a dissipation cover which is arranged on the shell and is used for absorbing the laser stray light reflected by the attenuation piece. According to the dust particle detection device, the attenuation part can absorb a large amount of laser stray light, so that the laser stray light is effectively prevented from returning to the measurement cavity, and the accuracy of a detection result is improved.

The invention discloses a centrifugal oil-gas separator. The centrifugal oil-gas separator comprises a shell, a cavity partition plate, a rotating shaft and a driving disc, wherein the cavity partition plate and the shell are used for forming a separation cavity in a separated mode, a sleeve pipe is arranged on the cavity partition plate, the lower end of the rotating shaft penetrates through thesleeve and then is connected with the driving disc, and a step-shaped gap seal is arranged between the upper end of the driving disc and the lower end of the sleeve. The centrifugal oil-gas separatorhas the beneficial effects that the step-shaped gap seal is directly adopted, compared with an original maze seal and an original fan and horizontal clearance seal combination, parts are reduced, theproduction is facilitated, the installation is simple and convenient, and the manufacturing cost is saved; and due to the facts that the path of the whole gap seal is long and the structure of the gapseal is a step-shaped structure, oil needs to pass through two upward climbing processes when the oil in a driving chamber enters the gap again, and the horizontal step surface can also play a role in reducing pressure and buffering the incoming oil, so that the oil in the driving chamber is also not prone to entering the separation cavity.

The invention provides a method for ecological restoration of a quarry in a mining area, which belongs to the field of ecological restoration. In the method, the quarry is leveled, and the discarded ore is crushed to obtain mineral powder, and the obtained mineral powder is used The aqueous solution is soaked to obtain pretreated mineral powder; water and agglomerating agent are added to the pretreated mineral powder and then sheared to obtain a slurry; the activated carbon layer, slurry and After the isolation layer composed of coal gangue and fly ash, compaction is carried out while spraying water; followed by operations such as backfilling with foreign soil and planting crops. This method is a systematic and targeted restoration method, using multiple measures at the same time. It integrates the effects of reuse, restoration, weakening the toxicity of the mining area, enriching the nutrition of the mining area, and increasing the diversity of the mining area. The abandoned mining area can be converted into a usable land, and the erosion of the added guest soil can be avoided to ensure the normal growth of the planted crops.