CN111637101A - Excess pressure is retrieved and is used energy system - Google Patents

Abstract

The invention provides an excess pressure recovery energy utilization system, which comprises: the energy utilization equipment, the pressure sensor, the hydraulic control module, the energy accumulators, the energy accumulator output loop, the liquid return oil path, the four-way reversing valve and the residual pressure recovery oil path; the energy utilization device comprises: the shutter sealing door is connected with the hydraulic lift through the coupler, the energy accumulator output circuit is connected with an oil inlet of the hydraulic lift, and an oil outlet of the hydraulic lift is connected with the hydraulic oil storage tank through a liquid return oil way. The method has the advantages that the energy recovery of different levels of the hydraulic press for graded pressure relief is realized, the graded utilization is realized according to the energy consumption of the sealing and collecting device and the automatic feeding and discharging device in the hot pressing process, the recovered residual pressure is used for driving the sealing and collecting device and the automatic feeding and discharging device used in the hot pressing process, the efficiency of artificial board preparation can be obviously improved, the energy consumption of enterprise production and operation can be greatly reduced, the enterprise operation cost is reduced, and the method has obvious energy saving and economic benefits.

Description

Excess pressure is retrieved and is used energy system

Technical Field

The invention belongs to the technical field of excess pressure utilization, and particularly relates to an excess pressure recovery energy utilization system.

Background

The artificial board is a plate or a moulded product which is made by taking wood or other non-wood plants as raw materials, separating the raw materials into various unit materials through certain mechanical processing and then gluing the unit materials with or without adhesive and other additives.

The hot press is one of the most important devices in artificial board production, and has the main functions of evaporating water in a board blank, increasing density, curing an adhesive under the combined action of temperature, pressure and time, and making an artificial board product with certain physical and mechanical properties after a series of physical and chemical changes. The hot press mainly includes: the hot pressing plate can move up and down in the bracket; one side of the hot pressing plate is connected with an oil delivery pipe, the other side of the hot pressing plate is provided with an oil return pipe, and the oil delivery pipe and the oil return pipe are respectively connected with a heat conduction oil temperature rising machine.

The hydraulic equipment system is the key of the hot press control technology, and is composed of a motor, an oil tank, an oil cylinder, an oil pump, a valve body, a pipeline and the like, and the functions of rising, pressure keeping, descending and the like of the hot press are realized by utilizing hydraulic pressure. The working process of the hot press is as follows: before the hot press works, the plate loader of the hot press carries out plate loading layer by layer, each layer of the hot press is quickly and simultaneously lifted to a specified height by a low-pressure device of the hydraulic press, then the hydraulic press finishes automatic conversion from low pressure to high pressure, the hot pressing of the wool board is finished under the conditions that the hot press is heated and the hydraulic press is pressurized for a certain time, then the hydraulic press unloads energy, each layer of the hot press falls to the original position of the plate loading, the plates are unloaded layer by the plate unloader, and simultaneously the plate loader loads all layers of backing plates into the hot press, so that a cycle is finished.

As shown in fig. 1, the existing hydraulic machine works: after the rough plates are arranged on each layer of the hot press, the low-pressure part of the hydraulic press is started, each layer of the hot press is lifted to a designated position, the conversion from low pressure to high pressure is started immediately, the rough plate blank is pressurized, when the pressure is pressurized to the highest pressure P1 (Pmax) set by the process, the pressure starts to drop due to the plastic deformation of the plate blank, and the plate blank is subjected to pressure maintaining for a period of time under the pressure of P1 and gradually reaches the process set value L3; after reaching L3 for a period of time, all plunger pumps start unloading, and the hot press releases pressure, and after the pressure is released to a pressure value P2 set by the process, the pressure is kept for a period of time; after the pressure maintaining is finished, releasing the pressure to a pressure value P3 set by the process again, maintaining the pressure for a period of time at the pressure, wherein the time is set by the process requirement; and (4) when the pressure maintaining time under P3 is up, beginning to release pressure, and opening the hot press after the pressure of the plate blank is zero through graded pressure release P4, P5 and P6. And pressure oil of the main oil cylinder returns to the oil tank, the movable cross beam of the hot press and the hot pressing plate start to descend, and the movable cross beam of the hot press falls to the bottom, so that a working cycle is completed.

Therefore, the working pressure relief process of the hydraulic machine is discontinuous and is in a step pressure relief state. Because the hydraulic tank of the traditional hot press hydraulic system does not have the function of storing and recovering oil under pressure, residual energy in a pressure maintaining state and potential energy in a pressure relief process are not effectively recovered, and energy waste and low efficiency of the hydraulic system are caused.

Correspondingly, in the slab preparation process, a plurality of devices which need energy for driving, such as an automatic feeding and discharging device of a hot press, are arranged. The hot press during operation can release VOCs, therefore, for the unorganized VOCs exhaust pollution who prevents plywood hot pressing in-process production, the best collection mode is, totally closed with the hot press to concentrate the exhaust emission through the fan in with the hot pressing in-process, and reduce as far as possible and send into the slab and take out the excessive of product residual VOCs exhaust gas, and send whole production process exhaust gas to exhaust treatment device and purify the back and discharge. If the hot press is completely sealed, the feeding and discharging operation of the hot press is affected, a control door needs to be reserved to provide a feeding and discharging channel for an automatic feeding and discharging device, and therefore the sealing and collecting device of the existing hot press also needs energy to drive, so that the energy consumption in the existing plate preparation process is very high, and the cost is high.

Disclosure of Invention

In order to solve the technical problem, the invention provides an energy utilization system for recovering excess pressure. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

The invention adopts the following technical scheme:

in some alternative embodiments, there is provided an excess pressure recovery energy system comprising: the energy utilization equipment, the pressure sensor, the hydraulic control module, the energy accumulators, the energy accumulator output loop, the liquid return oil path, the four-way reversing valve and the residual pressure recovery oil path additionally arranged between the hot press and the hydraulic oil storage tank;

the pressure sensor is arranged on the residual pressure recovery oil path, each energy accumulator is respectively connected with the residual pressure recovery oil path, and a control valve is arranged on a pipeline connecting each energy accumulator with the residual pressure recovery oil path;

the hydraulic control module reads the measurement data of the pressure sensor and sequentially opens the control valves corresponding to the energy accumulators according to the measured pressure values so that the energy accumulators recover the residual pressure with the corresponding gradient;

the energy accumulator is connected with the energy utilization equipment set through the energy accumulator output loop;

the energy utilization device comprises: the blind window sealing door is connected with the hydraulic lift through a coupler, the energy accumulator output loop is connected with an oil inlet of the hydraulic lift, an oil outlet of the hydraulic lift is connected with the hydraulic oil storage tank through the liquid return oil way, and the energy accumulator output loop is connected with the liquid return oil way through the four-way reversing valve.

In some optional embodiments, the energy using apparatus further comprises: an automatic feeding and discharging device and a sealed collecting device; the sealed collection device includes: the shutter sealing doors are arranged on the feeding side and the discharging side of a hot-pressing plate layer of the hot press;

automatic device of input or output material includes: moving the support frame; the moving support frame includes: the bearing plate is used for driving the blank to be pressed to move; the unit window of the shutter sealing door is positioned on the advancing track of the bearing plate, so that the bearing plate sends the blanks to be pressed into the hot pressing plate layer of the hot press through the unit window of the shutter sealing door when feeding and discharging.

In some alternative embodiments, the accumulator is a nitrogen bladder accumulator.

In some optional embodiments, a pressure limiting valve is further arranged on the residual pressure recovery oil circuit.

In some optional embodiments, a check valve is further disposed on a pipeline connecting each accumulator and the residual pressure recovery oil passage.

In some optional embodiments, a current limiting valve is arranged on the energy storage output circuit.

In some optional embodiments, the automatic feeding and discharging device further comprises: a fixed frame and a power system; the movable supporting frame and the power system are arranged on the fixed frame; the power system comprises: the hydraulic motor drives the screw rod to rotate through the first gear transmission mechanism, the screw rod is connected with the movable supporting frame, and the movable supporting frame is driven to move on the fixed frame.

In some optional embodiments, the moving support frame further comprises: an advancing and retreating screw transmission device; the advancing-retreating screw transmission device includes: the screw rod is driven by the second gear transmission mechanism to rotate, and the transmission nut is connected with the bearing plate.

In some optional embodiments, the moving support frame further comprises: a one-way baffle device; the one-way baffle device includes: the swinging plate is hinged with the fixed plate, and a limiting block used for limiting the swinging direction of the swinging plate is arranged on the fixed plate; the front end of the bearing plate is provided with a notch, the fixed plate is connected with the fixed frame, and the swinging plate penetrates through the notch.

In some optional embodiments, the moving support frame further comprises: a push plate and a roller; the push plate and the roller are arranged at the front end of the bearing plate.

The invention has the following beneficial effects: the method has the advantages that the method recovers the energy of different levels of the pressure relief of the hydraulic machine in a grading manner, realizes grading utilization according to the energy consumption of the sealing collection device and the automatic feeding and discharging device in the hot pressing process, and uses the recovered excess pressure to drive the sealing collection device and the automatic feeding and discharging device used in the hot pressing process in a manner of grading recovery and gradient utilization of the excess pressure of the hydraulic equipment of the whole artificial board factory, so that the efficiency of artificial board preparation can be obviously improved, the energy consumption of production and operation of enterprises can be greatly reduced, the operation cost of the enterprises is reduced, and obvious energy saving and economic benefits are achieved; and the change to the original hydraulic system and the hot press is small, and the high-efficiency recovery and utilization of resources are achieved under the condition that the restriction of the pressure of the hydraulic press and the output of the hydraulic press are ensured to reach the normal standard.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a graph of hot pressing;

FIG. 3 is a schematic diagram of the excess pressure collection utilization of the present invention;

FIG. 4 is a control schematic of the present invention;

FIG. 5 is a schematic structural view of the sealed collecting device and the automatic feeding and discharging device of the present invention;

FIG. 6 is a schematic view of the construction of the sealed collection device of the present invention;

FIG. 7 is a schematic view of the position of the shutter sealing door and the gas collecting channel of the present invention;

FIG. 8 is a perspective view of the automatic feed and discharge apparatus of the present invention;

FIG. 9 is a rear view of the automatic feed and discharge apparatus of the present invention;

FIG. 10 is a schematic view of the position of the fixed frame and the movable support frame of the present invention;

FIG. 11 is a schematic view of the position of the mounting frame and carrier plate of the present invention;

FIG. 12 is a schematic view of the connection of the hydraulic motor, lead screw and advance and retreat screw actuator of the present invention;

FIG. 13 is a schematic view of the connection of the lead screw, the second gear drive and the advancing and retreating screw drive of the present invention;

FIG. 14 is a schematic view of the construction of the one-way baffle device of the present invention;

FIG. 15 is a schematic view of the attachment of the one-way stop device, the fixed frame and the carrier plate of the present invention;

FIG. 16 is a schematic view of the construction of the pusher plate of the present invention;

fig. 17 is a schematic diagram of the cleaning apparatus for waste melamine paper according to the present invention.

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others.

As shown in fig. 1 to 5, the invention provides an excess pressure recovery energy-using system, which performs graded energy storage transformation on an original hydraulic system, and achieves resource recovery and utilization under the condition that the normal operation of hydraulic equipment is not influenced, namely the restriction of the pressure of a hydraulic machine and the condition that the output of the hydraulic machine achieves the normal standard.

The invention relates to a residual pressure recovery and gradient utilization system of hydraulic equipment in a whole factory for manufacturing artificial boards, which comprises: the energy utilization equipment 911, the residual pressure recovery oil way 111, the plurality of energy accumulators, the energy accumulator output loop 311, the liquid return oil way 411, the pressure sensor 511, the hydraulic control module and the valve group.

The hydraulic control module is used for collecting and processing data and outputting corresponding control signals to corresponding valves in the valve group to control the opening and closing of each valve and control the pressure output speed and flow. The pressure sensor 511 is connected to the data input of the hydraulic control module. The valve block includes: control valve, pressure limiting valve, check valve, flow limiting valve, four-way reversing valve 1311. The control valve, the pressure limiting valve, the flow limiting valve and the four-way reversing valve are connected with the data output end of the hydraulic control module.

The residual pressure recovery oil path 111 is arranged between the hot press 1 and the hydraulic oil storage tank 711, and is connected in parallel with an oil return pipeline of the original hydraulic system. The pressure sensor 511 is arranged on the residual pressure recovery oil circuit 111, measures the pressure value of the residual pressure recovery oil circuit 111, uploads the pressure value to the hydraulic control module, and realizes orderly hydraulic energy grading recovery according to the pressure grade size through the hydraulic control module.

The hydraulic oil of the energy accumulator is mainly supplied from the low-pressure stage of the hydraulic machine and is recycled in a grading way according to the pressure section of pressure relief, the pressure of the energy accumulator is high and low from the gradient pressure of the energy relief pressure of the hydraulic machine, and the energy accumulator is divided into a high-pressure energy accumulator group 2011, a medium-pressure energy accumulator group 2021 and a low-pressure energy accumulator group 2031. The high-pressure accumulator group 2011 is used for recovering pressure corresponding to the pressurizing process of the hydraulic machine, namely corresponding to sections P1-P3; the recovery pressure of the medium-pressure accumulator group 2021 corresponds to the pressure maintaining process of the hydraulic machine, namely corresponds to a P3-P4 section; the recovery pressure of the low-pressure accumulator group 2031 corresponds to the pressure relief process of the hydraulic machine, namely corresponds to the sections P4-P6. Aiming at the pressure change of the artificial board manufacturing process, corresponding to the pressurizing, pressure maintaining and pressure releasing processes of the hydraulic press, the energy storage unit is divided into high, medium and low pressure energy storage groups according to the gradient, the graded storage of energy is realized, conditions are provided for graded utilization, the resource recycling is achieved to the maximum degree, and the efficiency of a hydraulic system is improved to the maximum degree.

The energy accumulator is a nitrogen bladder energy accumulator and has the advantages of convenient restart, easy installation, sensitive reaction and simple maintenance.

Each energy accumulator is respectively connected with the residual pressure recovery oil path 111 to realize continuous graded recovery and storage of energy, and a control valve 811 is arranged on a pipeline connecting each energy accumulator with the residual pressure recovery oil path 111, specifically, the control valve 811 is an electric valve. The control valve needs to have strong bearing capacity and strong force balance effect, can adjust output pressure flow, avoids the defects of small load force and large energy consumption of the conventional hydraulic control valve group, achieves the aim of enabling output power to normally and stably operate, and realizes the recycling of secondary energy and the restriction on the working state of the original hydraulic system.

The hydraulic control module reads the measurement data of the pressure sensor 511, and sequentially opens the control valves corresponding to the energy accumulators according to the measured pressure values, so that each energy accumulator recovers the residual pressure with the corresponding gradient.

When the hot press works, when the hot press is pressurized to the highest pressure P1 (Pmax) set by the process, the valve of the oil return pipeline of the original hydraulic system is closed under the control of the hydraulic control module, and the control valve group of the residual pressure recovery and gradient utilization system is opened.

The pressure sensor 511 and the hydraulic control module are respectively input into the high-pressure accumulator group 2011, the medium-pressure accumulator group 2021 and the low-pressure accumulator group 2031 for storage according to pressure classification. The high-pressure accumulator set 2011, the medium-pressure accumulator set 2021 and the low-pressure accumulator set 2031 respectively correspond to the pressurizing, pressure maintaining and pressure releasing processes of the hydraulic machine in terms of pressure recovery. When the energy accumulator is positioned at the section P1-P3, the high-pressure energy accumulator group 2011 and the corresponding control valves are opened, and the control valves corresponding to other energy accumulators are closed; when the energy storage device is positioned at the sections P3-P4, the medium-pressure energy storage device group 2021 and the corresponding control valves are opened, and the control valves corresponding to other energy storage devices are closed; when the energy storage unit is located at the stage P4-P6, the low-pressure energy storage unit 2031 and the corresponding control valves are opened, and the control valves corresponding to the other energy storage units are closed. And after pressure relief is finished, the one-way valve of the energy storage group of each pressure level is closed, and respective energy storage is finished.

The energy storage devices are connected with the energy utilization device 911 through energy storage device output circuits 311, and each energy storage device corresponds to one energy storage device output circuit.

The energy consumption device 911 includes: the louver sealing door 301 is characterized in that the louver sealing door 301 is connected with the hydraulic lift 15 through a coupler 14, the energy accumulator output loop 311 is connected with an oil inlet of the hydraulic lift 15, an oil outlet of the hydraulic lift 15 is connected with the hydraulic oil storage tank 711 through a liquid return oil way 411, and the energy accumulator output loop 311 is connected with the liquid return oil way 411 through a four-way reversing valve 1311. The lifting shaft of the hydraulic lifter 15 is connected with the driving rotating shaft of the shutter sealing door through a coupling 14. When the lifting shaft of the hydraulic lifter 15 is lifted, the driving rotating shaft of the shutter sealing door 301 is driven to rotate through the coupler. The unit blades of the louver sealing door 301 are connected to the driving shaft through the short shaft, and when the driving shaft rotates, the driving shaft drives the short shaft to rotate so as to drive the unit blades to open and close.

The energy utilization device 911 may also include other devices requiring power consumption in the whole plant, and is divided into high, medium, and low energy consumption groups according to the amount of energy consumption, and respectively connected to the energy storage output circuit 3 of the corresponding level. Each energy-consuming equipment group corresponds to one liquid return oil path 411, and hydraulic oil is guided back to the hydraulic oil storage tank 7 through the liquid return oil path 411 to be stored. The high-voltage energy accumulator 2011 is connected to the energy consuming equipment through an energy accumulator output loop, and the energy consuming equipment can be a polishing machine or a drying machine. The medium-voltage accumulator group 2021 is connected with the medium-energy-consumption equipment group through an accumulator output loop, and the medium-energy-consumption equipment group can be a glue feeding machine and an automatic feeding and discharging device 2 of the invention. The low-voltage energy accumulator group 2031 is connected with the low-energy-consumption energy utilization equipment group through an energy accumulator output loop, and the low-energy-consumption energy utilization equipment group can be an illuminating lamp, a fan and the shutter sealing door.

When the shutter sealing door 301 works, the control valve corresponding to the energy accumulator of the corresponding level is opened through the hydraulic control module to output energy for the shutter sealing door.

The shutter sealing door 301 is connected with the hydraulic oil storage tank 711 through the liquid return oil path 411, and the accumulator output circuit 311 is connected with the liquid return oil path 411 through the four-way reversing valve 1311. When the energy storage device can store energy, hydraulic oil enters the energy storage device for energy storage, when the energy storage device is full, the four-way reversing valve 1311 closes the valve port on one side of the energy storage device, the hydraulic oil directly enters the liquid return oil way 411 through the energy storage device output loop 311 and is conveyed to the hydraulic oil storage tank 711, the whole energy storage device and the oil way are protected, and the whole recovery system is stable and safe.

When the energy utilization device 911 is not in operation, the hydraulic oil input assembly is closed and guided into the hydraulic oil storage tank 711 after the energy stored in the energy storage device reaches the design requirement. The hydraulic control module is the key for realizing the grading energy storage and the grading energy release, and realizes the automatic opening and closing of the control valve bank under the combined action of the pressure sensor and the hydraulic control valve bank.

And the residual pressure recovery oil way 111 is also provided with a pressure limiting valve 10, so that the residual pressure recovery oil way 111 is prevented from being damaged due to overlarge pressure.

And a check valve 11 is further arranged on a pipeline connecting each energy accumulator with the excess pressure recovery oil way 111, so that the hydraulic oil of the energy utilization equipment set is prevented from flowing back to the excess pressure recovery oil way 111.

The energy storage output loop 311 is provided with a flow limiting valve 12 for limiting the flow of the energy storage output loop 311.

As shown in fig. 5, the energy consumption device 911 further includes: an automatic feeding and discharging device 2 and a sealing and collecting device 3. The sealing and collecting device 3 is used for sealing the hot press 1 and providing a feeding and discharging channel for the automatic feeding and discharging device 2; the automatic feeding and discharging device 2 is used for feeding and discharging hot-pressing plate layers of the hot press 1, is coupled with the sealing and collecting device 3 and works in a linkage manner, and realizes that VOCs waste gas does not overflow in the hot-pressing process, is collected in a centralized manner and is sent to the tail gas treatment device.

As shown in fig. 5 to 7, the sealed collecting device includes: shutter sealing door 301, gas collecting channel 302 and fan 303.

The louver sealing door 301 is two, and is located the feed side and the delivery side of the hot pressing plate layer of hot press 1 respectively, and the louver sealing door 301 adopts the structure of shutter, and when the shutter blade was pulled up, the unit window was exposed, and the specific structure of shutter adopts current shutter structure can, and it is no longer repeated here, the invention only need to guarantee that the unit window corresponds with the position of each hot pressing plate layer of hot press 1, namely the interval is unanimous with hot pressing plate layer interval of hot press after the louver sealing door 301 was opened to make the board base of treating pressing pass in and out each hot pressing plate layer through the unit window of louver sealing door 301. Preferably, the shutter is closed upwards, and the edge of the shutter is provided with a sealing strip.

The blind sealing door 301 can be slid in parallel by means of guide rails to facilitate maintenance.

The gas collecting hoods 302 are arranged on two sides of the hot press 1, and the gas collecting hoods 302 and the shutter sealing door 301 completely seal the hot press 1. The top of the gas collecting channel 302 is provided with a funnel-shaped cover 304, the top 304 of the funnel-shaped cover is provided with an air outlet 305, and the air outlet 305 is connected with an air inlet of the fan 303 through a waste gas collecting pipeline 306. Fan 303 carries the waste gas of collecting to VOCs exhaust treatment device through the pipeline, carries out exhaust-gas treatment to VOCs waste gas does not have excessive and obtains purifying in VOCs exhaust treatment device.

As shown in fig. 8 to 16, the automatic feeding and discharging device 2 includes: the device comprises a fixed frame 201, a movable supporting frame 4, a power system 5, a waste melamine paper cleaning device 6, a track wheel 202 and a supporting sliding track 203. The movable supporting frame 4, the power system 5 and the waste melamine paper cleaning device 6 are arranged on the fixed frame 201.

The rail wheels 202 are provided at the bottom of the fixed frame 201, and the supporting sliding rails 203 are installed on the ground and are fitted with the rail wheels 202 such that the fixed frame 201 can move on the supporting sliding rails 203 by the rail wheels 202. The fixed frame 201 is locked during normal operation, and if the hot press 1 or the automatic feeding and discharging device 2 needs to be overhauled, the locking can be released, and the fixed frame moves to an overhauling position on the supporting sliding track 203. The height of the fixed frame 201 is set to be different according to the different quantity of the hot-pressed plate blanks at one time of the hot press, and the height is generally set to be between 5 cm and 10 cm. The width of the fixed frame 201 is set to an appropriate width according to the working width of the hot press and the size of the movable support frame 4, and is generally set to 2.7 m × 1.3 m according to the size of the slab.

The supporting sliding track 203 is composed of two steel tracks, is fixed on the feeding side of the hot press 1, has the width consistent with the width of the track wheels on the two sides of the fixed frame 201, the length of the track is set according to the field condition, the automatic feeding and discharging device 2 is moved away when the hot press 1 and the automatic feeding and discharging device 2 need to be overhauled, and the two ends of the supporting sliding track 203 are provided with stop blocks to prevent the automatic feeding and discharging device 2 from exceeding the track limited section when moving integrally.

As shown in fig. 6 and 17, the waste melamine paper cleaning apparatus 6 includes: a circulating injection pipeline 601 and a Venturi nozzle 602 facing to the hot pressing plate layer 7 of the hot pressing machine, wherein the Venturi nozzle 602 is arranged on the circulating injection pipeline 601. The fan sends wind to the venturi nozzle 602 through the circulation jetting pipeline 601, blows to the hot pressing plate layer 7 to realize the cleaning to the waste melamine paper.

The moving support frame 4 includes: a carrier plate 401, an advancing and retreating screw rod transmission device 402, a one-way baffle device 403, a push plate 404, a roller 405 and a thin plate warping limiting device 406.

The carrier plate 401 holds the material such as the board blank of waiting to be hot-pressed, gummed paper for drive wait to press the board blank to remove, and the carrier plate 401 can make specific quantity according to the model of manufacturing needs and hot press. The moving support frame 4 is moved by the power system 5 so that the carrier plate 401 is moved, and the unit window of the louver seal door 301 is located on the traveling track of the carrier plate 401. The carrier plate 401 feeds the blanks to be pressed into the hot pressboard layer of the hot press 1 through the unit window of the shutter sealing door 301 during feeding and discharging.

The power system 5 includes: a hydraulic motor 501, a screw rod 502, a first gear transmission mechanism 503 and a second gear transmission mechanism 504. As shown in fig. 8, a hydraulic motor 501 drives a screw rod 502 to rotate through a first gear transmission 503, and the first gear transmission adopts a plurality of gears to mesh to transmit power.

As shown in fig. 12 and 13, the advancing-retreating screw actuator 402 includes: the screw rod 502 drives the screw rod 402a to rotate through the second gear transmission mechanism 504, when the screw rod 402a rotates, the transmission nut 402b moves on the screw rod 402a, the transmission nut 402b is connected with the bearing plate 401, and therefore the hydraulic motor 501 drives the screw rod 502 to rotate, the screw rod 502 drives the transmission nut 402b to move through the second gear transmission mechanism 504, and finally the movable support frame 4 is driven to move on the fixed frame 201. The second gear transmission mechanism adopts a plurality of gears to transmit power in a meshing way.

As shown in fig. 14 to 15, the one-way flap device 403 includes: a fixed plate 403a and a swinging plate 403b hinged with the fixed plate 403a, and a limit block 403c for limiting the swinging direction of the swinging plate 403b is arranged on the fixed plate 403 a. The front end of the carrier plate 401 is opened with a notch 401a, the fixing plate 403a is connected with the fixing frame 201, and the swinging plate 403b penetrates through the notch 401 a. When the carrier plate 401 is in the fixed frame 201, the swing plate 403b is located in the notch 401 a; with the pushing of the carrier plate 401, the swinging plate 403b is forced to swing upwards and pass over the blank to be pressed, so that the movement of the plate is not affected until the swinging plate 403b falls behind the blank to be pressed and contacts with the upper surface of the carrier plate 401 again, and at this time, even if the carrier plate 401 is retracted, the swinging plate 403b can also clamp the blank to be pressed and prevent the blank to be pressed from being retracted along with the carrier plate 401.

As shown in fig. 15 to 16, a pusher 404 and a roller 405 are provided at the front end of the carrier plate 401, i.e., the end near the hot press.

During feeding, the blank to be pressed is manually placed on each carrier plate 401. The manual plate feeding positions at the two ends of the plane of each layer of the bearing plate are retracted inwards, the operation space of workers is increased, meanwhile, the edges of the bearing plate place the optimal position for the plate blank to be pressed, the operation difficulty of the workers is reduced, the position adjustment time of the plate blank is shortened, and the position accuracy of the plate blank entering a hot press is ensured.

After the pressing plate blank is placed, under the control of the control system, the hot press starts feeding work, the bearing plate 401 is driven to drive the pressing plate blank to move, when the pressing plate blank is pushed to the position that the near-end edge exceeds the edge of the fixed frame and is close to the edge of the hot press, the one-way baffle device 403 is triggered, and the pressing plate blank can be prevented from moving reversely along with the movable supporting frame 4 when the movable supporting frame 4 retreats. After the pressing plate blank contacts the hot press, the pressing plate blank can slide on the roller 405 to enter the hot press, so that the system resistance is reduced, and the plate abrasion risk is reduced. When the blank to be pressed enters a certain position of the hot press 1, the movable supporting frame 4 retreats for a certain distance and stops, so that the blank to be pressed is separated from the movable supporting frame 4 and completely falls on a hot press layer obtained by the hot press, at the moment, the movable supporting frame 4 is started again to advance towards the hot press 1, and the blank to be pressed is pushed to enter the accurate hot pressing position of the hot press 1 through the push plate 404 for the second time. When the plate blank to be pressed enters the accurate hot pressing position of the hot press, the movable supporting frame 4 stops moving forwards and starts to move reversely to the original position, so that one feeding action is completed, and preparation is made for the next feeding and discharging work cycle.

When the hot pressing of the plate blank in the hot pressing machine is finished, after the pressure of the hot pressing machine is released, the hot pressing machine starts to discharge under the control of the control system, the movable supporting frame 4 starts to move towards the hot pressing machine 1, meanwhile, the louver sealing doors 301 on the two sides of the hot pressing machine 1 are opened, the movable supporting frame 4 is pushed to move towards the hot pressing machine 1 through the power system 5 on the fixed frame 201, and the plywood finished product after the hot pressing in the hot pressing machine is pushed out through the push plate 404 and taken out by a worker.

The moving support frame 4 moves forward and backward, and is connected with the screw rod 502 on the fixed frame 201 through the advancing and retreating screw rod transmission device 402, and the fixed frame power system 5 is used for pushing the screw rod 502 to rotate forward and backward, so that the advancing and retreating of the moving support frame 4 are controlled.

As shown in fig. 12, the thin plate warping limiting device 406 includes: a fixing piece 406a and a tab 406 b; the fixing piece 406a is connected to the fixing frame 201 at one end and connected to the tab 406b at the other end, and the tail end of the tab 406b is tilted to the side away from the carrier plate 401. In order to adapt to automatic feeding of a thin plate which is easy to curl up, the two sides of the bearing plate 401 are provided with the thin plate warping limiting devices 406, the pressure of the thin plate warping limiting devices 406 is adjusted according to the interlayer spacing of different hot presses, the reliability of automatic feeding and the quality safety of a feeding plate are ensured, when the thin plate is placed on the bearing plate 401, the edges of the two sides of the thin plate are limited in a certain warping range due to the action of the thin plate warping limiting devices 406, and meanwhile, the feeding of a plate blank is not influenced, so that the problem of automatic feeding of the thin plate which is easy to curl up is solved.

According to the characteristic that the hot pressing and the feeding of the plywood work alternately, the power of the power system 5 of the invention is derived from the complementary energy generated when the hydraulic system of the hot press decompresses, and the complementary energy is stored by the energy storage device and then used for moving the support frame 4. The storage capacity of the hydraulic oil of the hot press is about 10 percent of the total amount of the hydraulic system of the hot press, and the requirement of the operation power of the movable supporting frame 4 can be met. The power system 5 provides power for all moving parts of the whole device, including the reciprocating motion of the movable supporting frame 4 and the opening and closing of the gummed paper thermal fixing device.

The hydraulic lifter used for opening the fan blades of the shutter sealing door 301, the fan 303, the hydraulic motor 501, the fan used by the waste melamine paper cleaning device and the motor for driving the shutter sealing door 301 to integrally move are all from the energy accumulator, hydraulic oil is led into the energy utilization equipment through the energy accumulator output loop 311, and recovered hydraulic surplus energy is applied to energy utilization equipment needing energy supply in the artificial board preparation process. The efficiency of artificial board preparation can be obviously improved, the energy consumption of enterprise production and operation can be greatly reduced, the operation cost of enterprises can be reduced, and obvious energy-saving and economic benefits are achieved.

The control system provided by the invention consists of a central controller, a pressure sensor, a limit switch, an electromagnetic valve, other sensors and cables. The control panel of the control system is provided with functional buttons of feeding and discharging starting, feeding and discharging resetting, feeding and discharging advancing, feeding and discharging retreating, thermal fixation starting, thermal fixation resetting, emergency stop and the like, and the functional buttons are used for respectively controlling the movement of the movable supporting frame and the movement action pause under any emergency condition.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Claims (10)

1. An excess pressure recovery energy use system, comprising: the energy utilization equipment, the pressure sensor, the hydraulic control module, the energy accumulators, the energy accumulator output loop, the liquid return oil path, the four-way reversing valve and the residual pressure recovery oil path additionally arranged between the hot press and the hydraulic oil storage tank;

the pressure sensor is arranged on the residual pressure recovery oil path, each energy accumulator is respectively connected with the residual pressure recovery oil path, and a control valve is arranged on a pipeline connecting each energy accumulator with the residual pressure recovery oil path;

the hydraulic control module reads the measurement data of the pressure sensor and sequentially opens the control valves corresponding to the energy accumulators according to the measured pressure values so that the energy accumulators recover the residual pressure with the corresponding gradient;

the energy accumulator is connected with the energy utilization equipment set through the energy accumulator output loop;

the energy utilization device comprises: the blind window sealing door is connected with the hydraulic lift through a coupler, the energy accumulator output loop is connected with an oil inlet of the hydraulic lift, an oil outlet of the hydraulic lift is connected with the hydraulic oil storage tank through the liquid return oil way, and the energy accumulator output loop is connected with the liquid return oil way through the four-way reversing valve.

2. The excess pressure recovery energy consumption system of claim 1, wherein the energy consumption device further comprises: an automatic feeding and discharging device and a sealed collecting device; the sealed collection device includes: the shutter sealing doors are arranged on the feeding side and the discharging side of a hot-pressing plate layer of the hot press;

automatic device of input or output material includes: moving the support frame; the moving support frame includes: the bearing plate is used for driving the blank to be pressed to move; the unit window of the shutter sealing door is positioned on the advancing track of the bearing plate, so that the bearing plate sends the blanks to be pressed into the hot pressing plate layer of the hot press through the unit window of the shutter sealing door when feeding and discharging.

3. The excess pressure recovery energy system of claim 2, wherein the energy storage device is a nitrogen bladder energy storage device.

4. The excess pressure energy recovery system according to claim 3, wherein a pressure limiting valve is further arranged on the excess pressure recovery oil circuit.

5. The excess pressure recovery energy system as claimed in claim 4, wherein a check valve is further disposed on a pipeline connecting each accumulator and the excess pressure recovery oil passage.

6. The excess pressure recovery energy use system of claim 5, wherein the accumulator output circuit is provided with a flow limiting valve.

7. The excess pressure recovery energy consumption system of claim 6, wherein the automatic feeding and discharging device further comprises: a fixed frame and a power system; the movable supporting frame and the power system are arranged on the fixed frame; the power system comprises: the hydraulic motor drives the screw rod to rotate through the first gear transmission mechanism, the screw rod is connected with the movable supporting frame, and the movable supporting frame is driven to move on the fixed frame.

8. The excess pressure recovery energy use system of claim 7, wherein the mobile support frame further comprises: an advancing and retreating screw transmission device; the advancing-retreating screw transmission device includes: the screw rod is driven by the second gear transmission mechanism to rotate, and the transmission nut is connected with the bearing plate.

9. The excess pressure recovery energy use system of claim 8, wherein the mobile support frame further comprises: a one-way baffle device; the one-way baffle device includes: the swinging plate is hinged with the fixed plate, and a limiting block used for limiting the swinging direction of the swinging plate is arranged on the fixed plate; the front end of the bearing plate is provided with a notch, the fixed plate is connected with the fixed frame, and the swinging plate penetrates through the notch.

10. The excess pressure recovery energy use system of claim 9, wherein the mobile support frame further comprises: a push plate and a roller; the push plate and the roller are arranged at the front end of the bearing plate.

Images