69 results about "Feed pressure" patented technology

Described herein are novel construction material compositions, systems, and methods for manufacturing the same. Biocement technologies that monitor and adjust environmental and process controls during the manufacturing of biocement products are described. In some cases, during manufacturing of a construction material various manufacturing parameters including feed rate, feed pressure, feed molarity, feed rate profile, feed pH level, temperature, humidity, the percentage of fine limestone within an aggregate mix, the thickness of a pre-feed crust layer may be set and / or adjusted over time to reduce manufacturing time and to improve the structural integrity of a construction material.

The utility model discloses an inflating device for an O-shaped inflating bag with double inflating ports. The inflating device comprises a shell and two inflating components, the inflation assembly comprises an inflation pipe arranged at the upper end of the shell, two pairs of inflation pressing wheels and a pair of feeding pressing wheels, wherein the two pairs of inflation pressing wheels and the pair of feeding pressing wheels are sequentially arranged in the axial direction of the inflation pipe. A plurality of inflation holes are formed in the upper end of the inflation pipe and located between the two pairs of inflation pressing wheels. A cutting knife is arranged between the feeding pressing wheel and the inflation pressing wheel. A lateral air groove is formed in the side surface of the inflating pipe; one end of the cutting knife is located in the lateral air groove, and the other end of the cutting knife is arranged at the upper end of the shell. The two inflation assemblies inflate the O-shaped inflation bag with two independent inflation openings at the same time, the independent feeding pressing wheels are arranged in the follow-up direction of the two pairs of inflation pressing wheels and used for traction conveying, meanwhile, the cutting knife is arranged between the feeding pressing wheels and the inflation pressing wheels, and it is guaranteed that two packaging edges of the O-shaped inflation bag are evenly stressed and synchronously fed.

The utility model discloses a filter device, wherein the filter device, including: filter, heating device and diaphragm pump, filter inside is provided with filter space, and heating device is used for providing heat for filter space. The discharge port of diaphragm pump is communicated with the feed inlet of filter through pipeline, and diaphragm pump is used to provide the feed pressure required for filtering to filter. Through setting up diaphragm pump, use diaphragm pump to transport material, replace traditional compressed nitrogen as feed pressure source, and diaphragm pump can accurately adjust output pressure according to the actual filtering demand of filter, and the energy consumption of diaphragm pump itself is lower than nitrogen conveying system, reduces energy consumption, and reduces the cost of production preparation. At the same time, diaphragm pump forms closed loop pressure control with filter through pipeline, does not need manual monitoring pressure gauge, manual adjustment nitrogen supply, and the operation is more convenient, adapts to automatic production.

The utility model relates to a straight rod hydraulic automatic blanking machine which comprises a working platform, a cutting blanking part and a feeding clamping part, the cutting blanking part and the feeding clamping part are arranged on the working platform, and the cutting blanking part comprises a supporting frame fixedly arranged at one end of the working platform and a cutting head fixed to the supporting frame and driven by a cutting driving oil cylinder to move up and down. The feeding clamping part comprises a feeding mechanism and a pressing mechanism, the feeding mechanism is provided with feeding oil cylinders installed in a V-shaped symmetrical mode, and a moving base, a sliding block and a feeding pressing wheel which are matched with the feeding oil cylinders, stable feeding of bars is achieved, and the feeding efficiency is improved. According to the design of the pressing mechanism, through the synergistic effect of a rack, a gear, an elastic rod piece and a pressing block, strong clamping force is provided, and the stability of the bar in the cutting process is guaranteed. Through optimization design, the number of the hydraulic oil cylinders is reduced, the complexity of a hydraulic control system is simplified, and the risk of system faults is reduced.

The utility model discloses a kind of terephthalic acid filtering devices, including shell, the shell is installed on external equipment, pressure regulating mechanism is provided on the shell, the pressure regulating mechanism includes water inlet pipe, spacer, filter bag and water outlet pipe, the water inlet pipe and water outlet pipe are respectively installed in the both sides of the shell, the spacer is installed in the shell, the water inlet pipe is connected in the upper layer of spacer, the water outlet pipe is connected in the lower layer of spacer, overflow pipe is equipped with on the water inlet pipe, this innovative terephthalic acid filtering device is through the intelligent pressure regulating system of careful design, effectively solve the technical problem that filter bag in traditional equipment is damaged due to pressure fluctuation, realizes the safe and stable operation of production process, and its core technical advantage lies in introducing an automatic pressure regulating mechanism, can respond to the fluctuation of feed pressure in real time, and automatically start pressure relief protection when pressure exceeds safety threshold.

The utility model discloses a large-diameter pipeline pressure testing device which comprises pressure testing short pipes arranged at the two ends of a solid pipeline, one side of each pressure testing short pipe is provided with a blind pipe used for sealing the corresponding pressure testing short pipe, and the other side of each pressure testing short pipe and the solid pipeline are the same in specification and are welded and fixed, so that the pressure testing short pipes are communicated with the interior of the solid pipeline. The blind plate is arranged in the pressure test short pipe, a manhole communicated with the interior of the pressure test short pipe is arranged at the upper end of the pressure test short pipe, a pressing device used for feeding pressure and detecting is arranged on the blind pipe, and reinforcing ribs bypassing the pressing device are arranged on the inner side and the outer side of the blind plate. The reinforcing ribs are fully welded with the blind plate and the end of the pressure test short pipe, so that the strength of the blind plate is guaranteed, when the pressure of the pipeline is tested, safety accidents caused by the fact that water for the pressure test of the pipeline leaks into a groove in a short time due to deformation and fracture of the blind plate can be avoided to a great extent for personnel, and the safety of the pressure test personnel is guaranteed to a great extent.

The utility model discloses an adjustable sheet metal part bending machine which comprises a base support, a bending base and an adjusting device enabling the bending base to be adjustable are arranged on the base support, and a bending part capable of bending a sheet metal part and a pressure adjusting device capable of adjusting the bending pressure of the bending part are further arranged on the base support. According to the sheet metal part bending device, the sheet metal part is placed on the bending base, the angle of the sheet metal part is adjusted through the adjusting device in advance, then the sheet metal part is pressed through the bending component, the sheet metal part can be bent to be the same as the angle of the bending base, the feeding pressure of the bending component can be adjusted through the pressure adjusting device, and the sheet metal part bending device is suitable for various sheet metal parts with different thicknesses. And various adjustments of bending of the sheet metal part are truly achieved, the applicability is better, and more convenience is achieved.

The utility model discloses a special core rod for a disc-type high-efficiency filter, which comprises a core rod body, eight material grooves are arranged on the surface of the core rod body, the top ends and the bottom ends of the material grooves are twisted at an angle, a connecting port is arranged at the top end of the core rod body, and the top end of the core rod body is communicated with the connecting port through a connecting groove. According to the utility model, the micro-spiral material groove is arranged, when in use, a melt spirally advances along the material groove, and then enters the connecting port through the connecting groove, so that the feeding pressure is closer to the discharging pressure, the feeding of the die is more sufficient, and the defects of overlarge film thickness fluctuation, water marks and the like caused by insufficient die pressure during extrusion are avoided; and the film-forming yield and quality are improved.

The invention relates to vacuum-assisted constant-speed feeding pressure impregnation automatic equipment and a use method. The vacuum-assisted constant-speed feeding pressure impregnation automatic equipment comprises a material storage tank, an impregnation mold and an overflow material tank, a flow divider is arranged between the material storage tank and the dipping mold, a feeding port of the dipping mold is communicated with a discharging port of the flow divider through a feeding pipe, a feeding port of a material distributor is communicated with a discharging port of the material storage tank through a discharging pipe, and the discharging pipe is connected with the discharging port of the material storage tank through a discharging port valve; and one end of the anti-infiltration pipeline is communicated with the discharging pipe, and the other end of the anti-infiltration pipeline is communicated with the feeding pipe. By arranging the flow divider, constant-speed impregnation of a plurality of impregnation molds is ensured, and the consistency of impregnation parameters in the impregnation molds is improved; the resin flows back and forth in the dipping mold after pouring, so that the product blank in the dipping mold is more fully dipped, the dipping effect is improved, and the quality of the dipped product is improved.

This invention provides a bearing press-fitting device for an external rotor fan, belonging to the technical field of fan assembly equipment. It solves the technical problems of low automation and easy bearing damage in existing external rotor fan bearing press-fitting equipment. In this bearing press-fitting device, a feeding chute is provided along the length of the feeding seat. A discharge hole is provided on the bottom of the right side of the feeding chute. The discharge hole is coaxially arranged with the rotor positioning seat and the feeding pressure rod. The feeding pipe has an inner hole for storing the bearing. The feeding pipe is fixedly connected to the feeding seat, and the inner hole of the feeding pipe communicates with the feeding chute. The feeding pusher plate can push the bearing from below the feeding pipe to the right side of the feeding chute. The feeding baffle can cooperate with the feeding pusher plate to fix the bearing above the discharge hole. This invention achieves automatic bearing feeding through the cooperation of the feeding pipe, feeding pusher plate, and feeding baffle, and achieves bearing press-fitting through the feeding pressure rod, realizing automatic bearing feeding and automatic press-fitting with high production efficiency.

A method for filtering a dairy product is used in a filter system, the filter system comprising at least one pump circuit having a pump and a filter, the pump being arranged to feed a feed product to the filter to filter the feed product and output a permeate product and a retentate product. The method comprises: supplying the feed product to the pump at a feed pressure; during a first operating mode in which the feed pressure is below a first predetermined threshold, controlling the pump to operate at a first power within a first percentage range of a maximum rated power of the pump; and during a second operating mode in which the feed pressure is above the first predetermined threshold, controlling the pump to operate within a second percentage range of the maximum rated power, the second percentage range being higher than the first percentage range.

The present invention discloses a floor slab strength testing device, which relates to the technical field of floor slab strength testing, and comprises a workbench, wherein the workbench is provided with a fixed frame mechanism, the fixed frame mechanism is provided with an elastic driving roller mechanism, the fixed frame mechanism is provided with a first feeding platen mechanism, the first feeding platen mechanism is provided with a first linkage clamping mechanism, the workbench is provided with a moving frame mechanism, the moving frame mechanism is provided with an elastic driven roller mechanism, the moving frame mechanism is provided with a second feeding platen mechanism, the second feeding platen mechanism is provided with a second linkage clamping mechanism, the workbench is provided with a detection and adjustment mechanism, and the detection and adjustment mechanism is provided with a pressure block. The present invention can drive the floor slab placed on the fixed frame mechanism to move by arranging the elastic driving roller mechanism, and can control the cantilever installation state of the floor slab in cooperation with the moving frame mechanism, thereby improving the efficiency of floor slab strength testing.

The utility model relates to the field of engineering equipment, in particular to a ventilation box for feeding pressure reduction of a stirring main machine, which comprises a ventilation box body and an air jet assembly, the ventilation box body is a square cavity body with a downward opening, and the upper part of one side wall of the ventilation box body is provided with a ventilation hole; the air injection assembly is provided with injection rings capable of intensively injecting high-pressure air flow towards different directions around, and the injection rings are arranged in the cavity of the ventilation box body and can inject the high-pressure air flow towards the inner wall of the ventilation box body. According to the utility model, the ventilation box is improved, the jet ring of the air jet assembly, which can densely jet high-pressure air flow towards different directions, is suspended in the cavity of the ventilation box body, and the high-pressure air flow jetted by the jet ring can be used for strongly blowing air to the inner wall of the ventilation box body so as to clean residual pulp on the box wall and air-dry the box wall; the ventilation box body can be kept unobstructed, so that air in the cavity of the stirring main machine can be quickly exhausted to realize pressure reduction when the stirring main machine is used for feeding.

The present invention provides a high-efficiency double-head drilling device, which comprises a workbench, a drilling machine module and a supporting module; the workbench is designed with a rotating truncated table; the drilling machine module is installed directly above the workbench, and a cross arm adjusted by a feed pressure rod is designed on the telescopic end of the main spindle box of the drilling machine module, and a drill shaft driven by a motor is symmetrically installed on the cross arm; the supporting module comprises a cross column centrally arranged above the drilling machine module, and vertical brackets are designed at both ends of the cross column; the high-efficiency double-head drilling device is a device that fixes and supports the main spindle box through a symmetrical fixed structure, thereby balancing the reaction force received during drilling, so that the main spindle box can ensure its accuracy after long-term drilling operation; at the same time, the double drill bit structure can save drilling time and improve drilling efficiency.

The invention relates to a pressure control system, a method and an apparatus for controlling pressure. The pressure control system comprises at least one line and valve and the pressure control system controls the valve for arranging a desired pressure for at least one predetermined device. The pressure control system may comprise at least one pressure source (9), at least one pressure gauge (5) for measuring pressure and at least one pressure valve (7) for feeding pressure A from the pressure source, and a control unit for adjusting pressure B, which is lower than the pressure A, to a desired value based on a measurement of the pressure gauge in a process line of the pressure control system, and at least one valve (3,15,16) for supplying the pressure B from the process line to the predetermined device (1).

The utility model relates to the technical field of boiler water supply, in particular to a boiler water supply pressure stabilizing device which comprises a fixing seat and a boiler water supply pump, a carbon steel pressure stabilizing tank is fixedly connected to the inner wall face of the fixing seat, and a water inlet pipe is fixedly installed on the upper portion of the outer surface of the boiler water supply pump in a penetrating mode. An input pipe is fixedly installed in the middle of the right end of the boiler water feeding pump in a penetrating mode, the right end of the input pipe is fixedly connected with the lower portion of the left end of the carbon steel surge tank in a penetrating mode, a check valve is movably installed on the right portion of the outer surface of the input pipe in a penetrating mode, and a water feeding pressure stabilizing set is fixedly connected to the middle of the inner wall face of the carbon steel surge tank. According to the boiler water supply pressure stabilizing device, the carbon steel pressure stabilizing tank and the water supply pressure stabilizing set inside the carbon steel pressure stabilizing tank are arranged, water flow entering the device is buffered and adjusted in a multiple mode, the water flow is decelerated and dispersed in sequence, the flow direction of the water flow is changed, the water flow is more stable in the carbon steel pressure stabilizing tank, impact and fluctuation of the water flow are effectively reduced, and the service life of the water supply pressure stabilizing device is prolonged. Therefore, the pressure output to the boiler water supply pipe network is stabilized.

The invention provides a method for improving ternary precursor BET through filter press discharging, and belongs to the technical field of ternary lithium battery precursor materials.The method comprises the steps that the feeding time difference value between experimental production lines of a plate-and-frame filter press is controlled for 60 + / -10 minutes by regulating and controlling the pressure of a pneumatic diaphragm pump and the feeding pressure of a plate frame; the feeding material level of the plate frame of the plate-and-frame filter press is controlled to be 80% + / -10%, and it is guaranteed that the slurry tank can be completely pumped every time; the principle that the materials are firstly treated when entering the slurry tank is followed during material treatment; the time for the plate-and-frame filter press to process a plate-and-frame material is controlled to be 160-165 minutes; after materials in a plate frame of the plate-and-frame filter press are aged, washed, squeezed and purged, the wet material bin and the plate-and-frame filter press are checked before the materials enter the wet material bin; and the time for the plate-and-frame filter press to unload one plate-and-frame material is controlled to be 15-20 minutes. According to the method for improving the ternary precursor BET through unloading of the filter press, provided by the invention, the prepared ternary precursor BET is stable.

The embodiment of the utility model discloses a pitched roof glue feeding device which comprises a bottom plate, a front mold and a rear mold, the front mold and the rear mold are arranged on the bottom plate in the vertical direction, and when the front mold and the rear mold are attached, a forming cavity used for injecting glue to form a product is formed in the attaching side; the injection mold further comprises a pitched roof glue injection mechanism, the glue outlet end of the pitched roof glue injection mechanism is communicated with the forming cavity, and a glue injection runner of the pitched roof glue injection mechanism is provided with at least one time of bending. According to the inclined ejection glue feeding device, the speed and impact force of melt entering the forming cavity are reduced through the bending design of the glue injection runner, the defect that impact lines are generated due to high-speed impact is overcome, the influence of glue feeding pressure on a product is effectively reduced, and the defects of shrinkage deformation, glue powder dragging and the like are reduced; and the formation of punched lines at the pouring gate position is reduced, and the appearance quality of a product is remarkably improved.

The utility model discloses a headstock feeding mechanism of a screw tap measuring instrument, which comprises a base, and a headstock and a tailstock which are arranged on the base, the headstock and the tailstock are arranged at an interval, the headstock and the tailstock are provided with tips which are coaxially and oppositely arranged, the tailstock is fixed on the base, and the headstock is arranged on the base through a guide rail in a translation manner; the device further comprises a feeding driving assembly, the feeding driving assembly is in transmission fit with the positioning plate, a feeding compression spring extending in the direction of the headstock is fixed to the positioning plate, and the feeding driving assembly drives the positioning plate to move horizontally to drive the feeding compression spring to push the headstock to move horizontally. The positioning plate and the feeding pressure spring fixed on the positioning plate are driven by the feeding driving component to translate together, the feeding pressure spring is propped against the headstock and provides pressure for the headstock by utilizing the elasticity of the feeding pressure spring, so that the pressure is converted into pre-tightening force provided for the screw tap by the tip on the headstock, manual adjustment is not needed, and the working efficiency is improved. And the efficiency of screw tap measurement work is effectively improved.

The invention relates to the technical field of automobile pressure sensor assembling, in particular to an automatic annular workpiece assembling device and method.The automatic annular workpiece assembling device comprises a stand column, a workbench longitudinally installed at the top end of the stand column and a feeding channel transversely installed in the middle of the table top of the workbench and further comprises a material staggering mechanism, a material distributing mechanism, a circulation jig and a material taking and press fitting mechanism; the material staggering mechanism is longitudinally installed on the rear portion of the table top of the workbench so as to push out materials in the material supply channel. The material distributing mechanism is vertically installed at the front end of the workbench so as to store materials pushed out of the material supply channel. The circulation jig is arranged on the right side of the workbench and conveyed by the line body. The material taking and press fitting mechanism is installed at the top end of the workbench so as to take away the materials stored on the material distributing mechanism and assemble the materials into the products on the circulation jig. According to the automatic assembling device and method for the annular workpieces, the structural design is simple, the assembling efficiency is high, the assembling quality is stable, and the automatic assembling device and method can be compatible with various products.

This invention relates to the field of vanadium chemical metallurgy technology, and discloses a method for controlling the moisture content of ammonium polyvanadate in plate and frame filter presses. The method includes the following steps: starting the feed pump to deliver ammonium polyvanadate slurry into the plate and frame filter press; continuing to feed after the feed pressure reaches a set threshold to compact the filter cake; dewatering the filter cake by blowing air; after the blowing process is completed, first controlling the main hydraulic cylinder to slightly retract to loosen the filter plates, maintaining this slightly loose state for a preset time to drain any remaining water from the plates and frames, then completely loosening the plates and frames and unloading the material. This invention also provides an ammonium polyvanadate product. The method of this invention solves the problems of high filter cake moisture content, fluctuating dewatering effect, insufficient blowing efficiency, backflow during unloading, and blockage in subsequent conveying processes during existing plate and frame filter presses, achieving stable control of filter cake moisture content.

The utility model relates to a feeding pressure stabilizing device which comprises a buffer assembly, a plurality of plunger pumps and a plurality of filter presses, a containing cavity used for containing materials is defined in the buffer assembly, and the buffer assembly is provided with a discharging port and a feeding port which are communicated with the containing cavity. The discharge port and the feed port are respectively connected with a feed pipe and a discharge pipe; the discharging ends of the plunger pumps are connected in series and connected with the end, away from the buffer assembly, of the feeding pipe; and the feed ports of the plurality of filter presses are connected with one end, far away from the buffer assembly, of the discharge pipe. According to the technical scheme, the buffer assembly is ingeniously used for buffering and absorbing pressure fluctuation generated in the working process of the plunger pump, it is ensured that the pressure of the filter press is balanced, manual dredging is not needed, normal production is ensured, and the production efficiency is improved.

A spiral wound membrane module has a brackish water RO or NF membrane combined with a permeate carrier having a narrow spacing between membrane contacting elements. The membrane may have water permeability (A-Value) of at least 8*10−5 cm / s / bar at 25° C. The membrane may have salt diffusion rate (B-Value) of at least 0.5*10−5 cm / s at 25° C. The permeate carrier may have a density of 54 wales per inch or more of a gap between adjacent ribs of 215 um or less. The permeate carrier may have a channel cross-sectional area of 16*10−9 m2 or more. Water is fed to the module at a high feed pressure, for example a pressure of at least 50 bar, optionally up to 120 bar. Retentate may be discharged at a concentration of 100 g / L, 130 g / L, or 150 g / L or more.

The invention discloses an automatic control method of an improved diaphragm plate-and-frame filter press, which comprises the following steps: S1, after a machine head is pressed, opening a feed valve and a first control valve of a water replenishing pipe of a squeezing water tank, and adjusting a switch by a second control valve according to the liquid level of the water tank; the feeding pump is manually started, and when the feeding pressure reaches a set value, the feeding pump automatically stops, and the feeding valve and the first control valve are closed; s2, closing a squeezing water return valve, starting a squeezing water pump, opening a squeezing pump outlet one-way valve and a squeezing pump, after squeezing is finished, stopping the squeezing water pump, closing the squeezing pump outlet one-way valve, opening the squeezing water return valve, and measuring and controlling a water tank return valve and a discharge valve according to an online turbidity meter; the device has the beneficial effects that sludge is effectively prevented from blocking a compressed air pipeline, when it is detected that the water quality is abnormal, squeezed water containing sludge can be automatically drained to a pit, and the vicious circle that filter plate diaphragms are damaged due to recycling of the squeezed water is avoided.

The invention belongs to the technical field of material supplying and taking, and particularly relates to a material supplying and taking device special for a cleaning process. According to the device, the outlet end of a to-be-cleaned unit is connected with an electric control valve through a first pipeline, and the other end of the electric control valve is connected with a second pipeline; the inlet end of the to-be-cleaned unit is connected with the feeding electric control valve through a third pipeline, and the third pipeline is connected with the second pipeline through a fourth pipeline; the other end of the feeding electric control valve is connected with a fifth pipeline, the fifth pipeline is provided with a matched sixth pipeline, a feeding container is arranged between the fifth pipeline and the sixth pipeline, and the sixth pipeline is connected with a feeding purification container. The feeding pressure and flow can be stably controlled, the material taking pressure can be stably controlled, the emergency discharging function is achieved, the material taking device is passivated and evacuated through the feeding device, and a cleaning medium and other products are preliminarily separated.

The utility model relates to the technical field of conveying devices, and discloses feeding equipment for plastic particles, which comprises a support frame and a connecting seat, a feeding hopper is fixedly mounted at the upper part of the connecting seat, a conveying pipe is fixedly mounted in a manner of penetrating through the connecting seat, a driving motor is fixedly mounted on one side of the conveying pipe, and the driving motor is fixedly mounted on the other side of the conveying pipe. By controlling the special-shaped base and the dredging plate, plastic particles in the feeding hopper can be turned over during equipment operation, blockage caused by too fast material injection is avoided, the feeding pressure of the spiral plate can be relieved, the feeding efficiency of the plastic particles is improved, meanwhile, the dredging plate is adjusted on the supporting column and fixed through the fastening bolt, and the dredging plate is convenient to use. And the feeding rate of the plastic particles can be adjusted, feeding of the plastic particles is more uniform under the action of a dredging plate, and the practicability of the equipment is greatly improved.

The utility model discloses a feeding pressure regulating device which comprises a shell, an end cover is detachably installed on the top of the shell, a pressure regulating cavity communicated with an inner cavity of the shell is formed in the top of the shell, a throttling piece is arranged in the pressure regulating cavity, a piston cavity is formed in the bottom of the end cover, and a piston is arranged in the piston cavity. The pressure adjusting structure is arranged at the discharging end connected with equipment, the pressure adjusting device is used for adjusting pressure difference according to different working conditions and requirements, the pressure adjusting structure is arranged at the discharging end connected with the equipment, the pressure adjusting device is arranged at the discharging end of the equipment, the pressure adjusting device is arranged at the discharging end of the equipment, the pressure adjusting device is arranged at the discharging end of the equipment, and the pressure adjusting device is arranged at the discharging end of the equipment. According to the size of polyurethane raw material particles, the suction force of the feeding device is flexibly adjusted, the situation that materials are blocked in the feeding pipe is avoided, the feeding speed and efficiency of processing equipment are improved, and convenience is provided for work and use of a user.

A diaphragm pump system includes a diaphragm pump and a pressure regulator. The diaphragm pump has a housing having a pumping chamber containing fluid to be pumped, and a transfer chamber adapted to contain hydraulic fluid. A diaphragm is supported by the housing and at least partially defines a pumping chamber side and a transfer chamber side. A driven plunger slides in a reciprocating motion and forcing hydraulic fluid against the diaphragm. A first valve allows hydraulic fluid into the transfer chamber and a second valve allows hydraulic fluid to be removed from the transfer chamber. A hydraulic fluid reservoir is in fluid communication with the transfer chamber. The pressure regulator includes valving that provides a hydraulic fluid pressure above a pumped fluid inlet feed pressure to maintain a proper amount of hydraulic oil in the transfer chamber.

The application discloses a kind of through-wall fire extinguishing device and its using method, belong to fire-fighting equipment field.The device includes supporting assembly and fire extinguishing assembly;Fire extinguishing assembly includes first shaft cylinder, coaxial sleeve is arranged on the outside of first shaft cylinder and can rotate and axially slide second shaft cylinder, perforator and rotating disc.Fire extinguishing assembly is configured with first flow path drive rotating disc rotation, second flow path guides fire extinguishing fluid to at least part by rotating disc defined feed pressure chamber to drive axial feed, and third flow path is open when feeding to predetermined position, so that fire extinguishing fluid is sprayed outward through perforator.The application is compact in structure, reliable to start under low water pressure, automatically feed and automatically spray water after drilling, suitable for limited space.