CN217367300U

CN217367300U - Automatic filter press filtering chamber locking and pulling plate cake unloading combined mechanism sharing frequency converter

Info

Publication number: CN217367300U
Application number: CN202221245491.2U
Authority: CN
Inventors: 石红雨; 李志�; 党云岭; 韦鹏; 高海勇; 安宾; 梁颖
Original assignee: Jingjin Equipment Co Ltd
Current assignee: Jingjin Equipment Co Ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-09-06
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses an automatic filter press filtering chamber locking and pulling plate cake unloading combined mechanism sharing a frequency converter, which comprises a filtering chamber locking mechanism and a pulling plate cake unloading mechanism; the key points of the innovative scheme are as follows: two sets of driving devices of the combined mechanism comprise a locking contactor, a locking motor, a locking relay, a pull plate contactor, a pull plate motor and a pull plate relay, share one frequency converter, namely, one frequency converter is omitted, and through improving the connection mode, a locking motor circuit of a serial contactor and a pull plate motor circuit of the serial contactor are connected in parallel to be connected with the frequency converter, so that the locking motor circuit and the pull plate motor circuit still keep all functions of the original locking motor and pull plate motor in soft start frequency conversion operation; the technical problems that two independent mechanisms which do not work simultaneously are provided with the same motor frequency converter, the structure is complex, the production cost and the maintenance cost are high, the more complex the structure with the same function, the lower the reliability and the higher the failure rate are solved; the integral structure of the two mechanisms is optimized, and the requirements of high-efficiency production, cost reduction and efficiency improvement of users of the automatic filter press are met.

Description

Automatic filter press filtering chamber locking and plate pulling and cake unloading combined mechanism sharing frequency converter

Technical Field

The utility model belongs to the technical field of high-efficient automatic pressure filter (patent classification number B01D 25/12), also belong to and omit the essential element invention, relate to a filter chamber locking and arm-tie of sharing converter unload cake mechanism.

Background

The filter press is a pressurized filtering device with multiple filtering chambers operated intermittently; an automatic filter press is a van-type filter press which is integrated mechanically, electrically and hydraulically and controlled by a PLC program; the high-efficient automatic filter press is an automatic filter press which can shorten the intermittent time, accelerate the operation cycle, reduce the failure rate and improve the production efficiency; the filter press mainly comprises a double-beam frame, a filter plate pressing mechanism, a filter chamber locking mechanism, a multi-filter chamber filter mechanism, a turning plate liquid receiving mechanism, a pulling plate cake discharging mechanism, a filter cloth cleaning mechanism and a PLC program control system; the device is suitable for automatic solid-liquid separation of various suspension materials (namely a mixture of liquid and solid particles).

The filter chamber locking mechanism, namely a motor-driven gear set transmission type filter chamber locking pressure maintaining mechanism, mainly comprises a locking driving device, a motor sliding device, a shared piston screw rod, a transmission gear set, a self-locking nut and a locking limiting device. The locking driving device comprises a speed reducing motor and a motor frequency converter; the motor sliding device comprises a motor sliding platform and a platform sliding groove; the shared piston screw is a piston screw shared by the filter chamber locking mechanism and the filter plate pressing mechanism; under the control of the PLC program control system, the automatic filter chamber locking and pressure maintaining function is achieved.

The pulling plate cake discharging mechanism, namely a motor-driven chain-driven block-by-block pulling plate cake discharging mechanism, mainly comprises a pulling plate driving device, a double-pulling-plate trolley and a guide rail thereof, a chain transmission device, a pulling plate limiting device and the like. The pulling plate driving device comprises a speed reducing motor and a motor frequency converter; the pull plate trolley comprises a trolley and a manipulator (comprising a pull plate driving lever assembly, a grabbing plate driving lever assembly and a torsion spring); the chain transmission device comprises a three-chain wheel long shaft (a driving shaft and a chain wheel), a single chain wheel short shaft (a driven shaft and a chain wheel), a driving short single chain and a transmission long double chain. Under the control of the PLC program control system, the automatic cake discharging device has the function of automatically pulling the filter plates one by one and discharging cakes.

The filter chamber locking mechanism and the pulling plate cake unloading mechanism are independent mechanisms with different functions, and the filter chamber locking mechanism and the pulling plate cake unloading mechanism are independent mechanisms, are provided with the same motor frequency converter and are respectively provided with the same motor frequency converter; the two motor frequency converters are respectively connected in series on the power line of the locking motor and the power line of the pull plate motor, have the function of soft starting of the motor, prevent the damage of equipment caused by hard starting of the motor, prolong the service life of the equipment and save the maintenance cost of the equipment.

The single operation cycle process of the automatic filter press comprises the steps of pressing a filter plate, locking a filter chamber, feeding at low pressure, maintaining pressure, filtering, washing and purifying, squeezing and dehydrating (including maintaining pressure), back blowing materials (materials precipitated in a feed hole in the back blowing and maintaining pressure process), blow drying and purifying, pulling a plate, unloading a cake, and cleaning filter cloth, wherein one key is automatically completed under the control of a PLC program control system. The filter chamber locking mechanism and the pulling plate cake unloading mechanism do not work simultaneously.

The existing independent filter chamber locking mechanism and the pull plate cake unloading mechanism have the following defects: the two frequency converters are independent in structure and are provided with the same motor frequency converter, the two motor frequency converters are respectively connected in series on a power line of the locking motor and a power line of the pulling plate motor, the structure is complex, and the production cost and the maintenance cost are high; and the more complicated the same functional structure, the lower the reliability, the higher the failure rate, the higher the shutdown error yield, the continuous production efficiency is influenced, and the requirements of high-efficiency production, cost reduction and efficiency improvement of users of the automatic filter press cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect that present stand alone type straining chamber locking mechanism and arm-tie unloaded cake mechanism, two sets of independent mechanisms of solving different simultaneous work all have the same motor converter, and the structure is complicated, and manufacturing cost and cost of maintenance are higher, and the more complicated reliability of the same functional structure is lower more, the technical problem that the fault rate is higher more, provide an automatic pressure filter straining chamber locking and arm-tie of sharing converter unload cake combined mechanism.

The utility model provides an innovation technical scheme that prior art problem adopted is: the utility model provides a locking of automatic pressure filter straining chamber of sharing converter and arm-tie unload cake combined mechanism (the locking of sharing converter and arm-tie mechanism), the main points of overall technical scheme are, the overall structure who innovates promptly compares with prior art, it has outstanding substantive characteristics and lies in: the existing independent filter chamber locking mechanism and the pull plate cake unloading mechanism are improved into a filter chamber locking and pull plate cake unloading combined mechanism sharing a frequency converter, and the filter chamber locking and pull plate cake unloading combined mechanism mainly comprises the filter chamber locking mechanism and the pull plate cake unloading mechanism, and the filter chamber locking mechanism and the pull plate cake unloading mechanism share the frequency converter (one frequency converter is omitted compared with the prior art); the filter chamber locking mechanism comprises a locking driving device, a motor sliding device, a shared piston screw rod, a transmission gear set, a self-locking nut and a locking limiting device; the pulling plate cake discharging mechanism comprises a pulling plate driving device, a double-pulling-plate trolley and a guide rail thereof, a chain transmission device and a pulling plate limiting device; the method mainly improves the driving devices of two mechanisms, and improves the existing independent locking driving device and the existing pulling plate driving device into a locking driving device and a pulling plate driving device which share a frequency converter; the locking driving device comprises a locking contactor, a locking motor and a locking relay; the pull plate driving device comprises a pull plate contactor, a pull plate motor and a pull plate relay; the two share a frequency converter, a forward rotation relay and a reverse rotation relay; the locking motor and the locking contactor are connected in series with a frequency converter, the pull plate motor and the pull plate contactor are also connected in series with the frequency converter, namely, a locking motor circuit of the series contactor and a pull plate motor circuit of the series contactor are connected in parallel with the frequency converter, and the frequency converter is communicated with the PLC program control system; under the control of the PLC program control system, the locking contactor and the pull plate contactor can switch circuits, so that the locking motor and the pull plate motor sequentially share one frequency converter to realize soft start, and the structure is simple; a frequency converter is omitted, and the original soft start functions of the locking motor and the pulling plate motor are still maintained by improving the connection mode; therefore, the technical problems that two independent mechanisms which do not work simultaneously are provided with the same motor frequency converter, the structure is complex, the production cost and the maintenance cost are high, the more complex the structure with the same function, the lower the reliability and the higher the failure rate are solved.

The utility model discloses the concrete design scheme of innovation part is: (1) the frequency converter, namely a 22F-D013N104 type speed regulation frequency converter shared by a locking motor and a pull plate motor, is 22F-D in a product series, is adaptive to the power of the motor to 13Kw, and has the function of soft starting the motor; (2) the pulling plate contactor and the locking contactor are LC1D18BDC type alternating current contactors, and can rapidly cut off an alternating current main loop; (3) the pulling plate motor and the locking motor are both speed reducing motors and comprise motors and speed reducers, and the speed reducers are provided with output shafts; (4) the forward relay and the reverse relay have the function of converting forward and reverse of the motor by a conversion circuit; (5) the pull plate relay and the locking relay are respectively a pull plate motor or a locking motor variable frequency to 50Hz operation relay.

The utility model discloses the connection relation of innovation part is: for convenience of explanation, a PLC program control system closely related to the driving apparatus of the present common frequency converter is added, (1) installation of hardware of the driving apparatus: the locking motor is arranged on the motor moving platform, the pull plate motor is fixedly arranged at the upper left outside of the machine head thrust plate in a suspension mode, and the frequency converter and other electrical elements are arranged in the PLC program control cabinet; (2) connection of electric elements of the driving device: the locking motor and the locking contactor are connected in series to be connected with a frequency converter, the pull plate motor and the pull plate contactor are also connected in series to be connected with the frequency converter, namely, a locking motor circuit of the series contactor and a pull plate motor circuit of the series contactor are connected in parallel to be connected with the frequency converter, various relays are respectively connected with the frequency converter, and the frequency converter is communicated with the PLC program control system; under the control of the PLC program control system, the locking contactor and the pull plate contactor can switch circuits, so that the locking motor and the pull plate motor sequentially share one frequency converter in turn to realize soft start; the forward relay and the reverse relay can make the motor rotate forward and reverse; the pull plate relay and the locking relay can enable the motor to operate in a frequency conversion mode.

The utility model discloses the relation of connection of other spare parts is: for convenience of explanation, a filter plate closely related to a locking and plate pulling mechanism of the shared frequency converter is additionally arranged; (1) assembling and final assembling a filter chamber locking mechanism: the motor sliding device comprises a motor moving platform and a platform sliding groove; the motor moving platform is arranged on the machine tailstock, and the locking motor is arranged on the motor moving platform; the self-locking nut is arranged on the piston screw rod, and the transmission gear set is meshed with the locking motor shaft and the self-locking nut; a limit sensor of the locking limit device and a limit induction plate thereof are respectively and correspondingly arranged on the platform sliding groove and the motor moving platform and are communicated with the PLC control system through sensing; the locking motor can drive the transmission gear set to drive the self-locking nut to rotate on the piston screw until the self-locking nut is tightly attached to the oil cylinder seat, so that the piston screw is locked and the like the filter chamber; under the control of the PLC program control system, the filter chamber has the function of automatically locking the filter chamber so as to be beneficial to pressure maintaining and filtering; (2) assembling and assembling a plate pulling and cake unloading mechanism: (2.1) assembling the chain transmission device: the chain transmission device comprises a three-chain wheel long shaft (a driving shaft and a chain wheel), a single chain wheel short shaft (a driven shaft and a chain wheel), a driving short single chain and a transmission long double chain; the long shafts (driving shafts and chain wheels) of the three chain wheels are arranged on the tail seat, close to the pulling plate motor, and cross over two sides of the rack, and drive the short single chains to connect the chain wheels of the speed reducer and the long shaft middle chain wheels of the three chain wheels, the short shafts (driven shafts and chain wheels) of the single chain wheels are arranged on the machine head, and the driving shafts and chain wheels, the driven shafts and chain wheels which are arranged on two sides of the rack are connected with the double-pulling plate trolley; the double-chain coaxial double-pulling-plate trolley has the function of driving the double-pulling-plate trolley to synchronously run; (2.2) assembling the plate pulling and cake discharging mechanism: the pulling plate motor is fixedly arranged below the machine tailstock in a suspension way; the filter plate is supported on a filter plate slideway of a double main beam of the frame by virtue of handles on two sides of the filter plate, a double-pulling-plate trolley is arranged on a trolley guide rail on the outer side of the main beam and corresponds to the filter plate handle, a two-stage transmission chain is connected with a driving device and the double-pulling-plate trolley, a limiting inductor of a pulling-plate limiting device and a limiting induction plate thereof are respectively and correspondingly arranged on the pulling-plate trolley and the trolley guide rail, and a sensor is communicated with a PLC (programmable logic controller) system; the pulling plate motor can drive the double-transmission chain to drive the double-pulling plate trolley to move back and forth so as to pull the filter plates and unload cakes piece by piece; under the control of the PLC program control system, the automatic cake discharging device has the function of automatically pulling the filter plates one by one so as to facilitate gravity cake discharging. The utility model discloses under PLC program control system's control, its dynamic relation specification is as follows.

Locking and unlocking a filter chamber: (1) locking a filter chamber: when the filter plate is pressed to a set pressure, the PLC control system controls the closing of a contact of the locking contactor, the frequency converter enables the locking motor to automatically and softly start, the forward rotation relay enables the locking motor to rotate forward, and the locking relay and the frequency converter enable the locking motor to operate at a frequency of 50 Hz; the locking motor drives the transmission gear set to drive the self-locking nut to rotate forwards on the piston screw rod, the self-locking nut is attached to the oil cylinder base until the self-locking nut is tightly attached to the oil cylinder base, and the piston screw rod is automatically locked to be equal to the locking filter chamber; (2) unlocking a filter chamber: after filtering is finished, the frequency converter enables the locking motor to automatically and softly start, the reverse relay enables the locking motor to reversely rotate, and the locking relay and the frequency converter enable the locking motor to operate in a frequency conversion mode of 50 Hz; the locking motor drives the transmission gear set to drive the self-locking nut to rotate reversely on the piston screw rod, so that the self-locking nut is loosened to work in a reciprocating cycle.

Opening the filter plate and unloading the cake: (1) the trolley moves forward to grab the plate: when the filter chamber unlocks the filter plate and releases the filter plate, the PLC control system controls the locking contact to release and the pull plate contactor to close, the frequency converter enables the pull plate motor to automatically and softly start, the forward rotation relay enables the pull plate motor to rotate forward, and the pull plate relay and the frequency converter enable the pull plate motor to operate at 50Hz in a frequency conversion mode; the pulling plate motor drives the double-transmission chain belt to drive the double-pulling plate trolley to synchronously move forwards in an idle mode; when the plate pulling manipulator touches the filter plate, the filter plate is grasped; (2) pulling the trolley backwards: when the pulling plate manipulator automatically grasps the filter plate, the front space is continuously blocked by the filter plate, the pulling plate motor is enabled to be in soft start and reverse rotation by the reverse rotation relay and the frequency converter, and the pulling plate motor is enabled to be in frequency conversion to 50Hz operation by the pulling plate relay and the frequency converter; the pulling plate motor drives the double-transmission chain belt to drive the double-pulling plate trolley to pull plates backwards synchronously; when the pulling plate manipulator touches a limit setting, the filter plate is automatically released, the pulling plate manipulator continues to retreat to meet resistance, the pulling plate motor is softly started to rotate forwards by the forward rotation relay and the frequency converter, and the pulling plate motor is operated by the pulling plate relay and the frequency converter in a frequency conversion way to 50 Hz; the filter plates are automatically pulled back one by the reciprocating circulation work after the forward idle running is recovered.

The utility model provides a filter chamber locking and pulling plate cake unloading combined mechanism of an automatic filter press sharing a frequency converter, which has the advantages of saving elements, simple structure, automatic frequency conversion, soft starting of a motor, reliable performance, low failure rate and lower cost; the locking driving device and the pulling plate driving device share the frequency converter, namely, one frequency converter is omitted, and the original soft start functions of the locking motor and the pulling plate motor are still maintained by improving the connection mode; the integral structure of the two mechanisms of the filter chamber locking and the pulling plate cake unloading is optimized, the reliability of the high-efficiency automatic filter press is improved, the failure rate and the comprehensive cost of equipment are reduced, and the requirements of high-efficiency production, cost reduction and efficiency improvement of users of the automatic filter press are met.

Drawings

Fig. 1 is a schematic front view of the combination mechanism for locking the filter chamber and removing cake from the automatic filter press sharing the frequency converter.

Fig. 2 is a schematic top view of the combination mechanism for locking the filter chamber and removing the cake from the pulling plate of the automatic filter press sharing the frequency converter.

Fig. 3 is the electrical wiring diagram of the automatic filter press filtering chamber locking and pulling plate cake unloading combined mechanism of the utility model sharing the frequency converter.

Fig. 4 is a schematic view of the assembly of the automatic filter press chamber locking and pulling plate cake unloading combination mechanism and the corresponding high-efficiency automatic filter press of the utility model sharing the frequency converter.

Reference numerals: 1-frequency converter (namely, shared frequency converter), 2-PLC program control system (comprising PLC program control cabinet), 3-pulling plate contactor, 4-locking contactor, 5-pulling plate motor, 6-locking motor, 7-forward rotation relay, 8-reverse rotation relay, 9-pulling plate relay (namely, pulling plate frequency conversion relay), 10-locking relay (namely, locking frequency conversion relay), 11-pulling plate trolley, 12-trolley guide rail, 13-filtering plate, 14-locking nut (namely, self-locking nut), 15-piston screw (namely, shared piston screw), 16-machine tailstock, 17-power line, 20-frame, 21-filtering chamber locking mechanism and 22-pulling plate cake unloading mechanism.

Detailed Description

The technical solution of the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiment of the combination mechanism for locking the filter chamber of the automatic filter press and removing cake by pulling plate of the present invention, which shares a frequency converter. Based on the embodiments of the present invention, all other embodiments that are not inventive and are made by those skilled in the art, such as the locking driving device and the pulling plate driving device of the common frequency converter with the same connection mode and similar structure after omitting the elements, all belong to the protection scope of the present invention.

Example 1

The utility model provides a locking of automatic filter press filter chamber of sharing converter and arm-tie unload cake combined mechanism (the locking and the arm-tie mechanism of sharing converter), the main points of the overall implementation scheme of innovation are: the existing independent filter chamber locking mechanism and the pull plate cake unloading mechanism are improved into a filter chamber locking and pull plate cake unloading combined mechanism sharing a frequency converter, and the combined mechanism mainly comprises a filter chamber locking mechanism 21 and a pull plate cake unloading mechanism 22, wherein the filter chamber locking mechanism and the pull plate cake unloading mechanism share the frequency converter 1 (one frequency converter 1 is omitted compared with the prior art); the filter chamber locking mechanism 21 comprises a locking driving device, a motor sliding device, a shared piston screw 15, a transmission gear set, a self-locking nut 14 and a locking limiting device; the pulling plate cake discharging mechanism 22 comprises a pulling plate driving device, a double-pulling-plate trolley 11, a trolley guide rail 12, a chain transmission device and a pulling plate limiting device; mainly improves the driving devices of two mechanisms, and improves the existing independent locking driving device and the pulling plate driving device into the locking driving device and the pulling plate driving device which share the frequency converter 1; the locking driving device comprises a locking contactor 4, a locking motor 6 and a locking relay 10; the pulling plate driving device comprises a pulling plate contactor 3, a pulling plate motor 5 and a pulling plate relay 9; the frequency converter 1, the forward rotation relay 7 and the reverse rotation relay 8 are shared by the two; the locking motor 6 and the locking contactor 4 are connected in series with the frequency converter 1, the pull plate motor 5 and the pull plate contactor 3 are also connected in series with the frequency converter 1, namely, a circuit of the locking motor 6 of the series contactor and a circuit of the pull plate motor 5 of the series contactor are connected in parallel with the frequency converter 1, and the frequency converter 1 is communicated with the PLC program control system 2; under the control of the PLC program control system 2, the locking contactor 4 and the pull plate contactor 3 can switch circuits, so that the locking motor 6 and the pull plate motor 5 sequentially share one frequency converter 1 to realize soft start, and the structure is simple; a frequency converter 1 is omitted, and the original soft start functions of a locking motor 6 and a pulling plate motor 5 are still kept by improving the connection mode; the detailed description of the embodiments of the inventive section follows.

The frequency converter 1, namely a 22F-D013N104 type speed regulation frequency converter 1 shared by the locking motor 6 and the pull plate motor 5, is a product series of 22F-D, is adaptive to the motor power of 13Kw, and has the function of enabling the motor to be in soft start; the frequency converter 1 is arranged at the right lower part of the PLC program control cabinet 2; a locking motor 6 circuit of the series contactor and a pulling plate motor 5 circuit of the series contactor are connected in parallel to be connected into a frequency converter 1, various relays are respectively connected into the frequency converter 1, and the frequency converter 1 is communicated with a PLC program control system 2; used for enabling the locking motor 6 and the pulling plate motor 5 to be in soft start and speed-regulating operation.

The pulling plate contactor 3 is an LC1D18BDC type alternating current contactor and can rapidly cut off an alternating current main loop; the pull plate contactor 3 is connected in series on the power line 17 of the frequency converter 1 and the pull plate motor 5 and is used for attracting and connecting the circuit of the pull plate motor 5 when the pull plate unloads and disconnecting the circuit of the pull plate motor 5 when the pull plate unloads; under the control of the PLC program control system 2, the locking contactor 4 and the pull plate contactor 3 switch circuits according to programs, so that the locking motor 6 and the pull plate motor 5 sequentially share one frequency converter 1 to realize soft start.

The locking contactor 4 is an LC1D18BDC type alternating current contactor and can rapidly cut off an alternating current main loop; the locking contactor 4 is connected in series on the frequency converter 1 and a power line 17 of the locking motor 6 and is used for closing and connecting a circuit of the locking motor 6 when the filter chamber is locked and disconnecting the circuit of the locking motor 6 after the filter chamber is released; under the control of the PLC program control system 2, the locking contactor 4 and the pull plate contactor 3 switch circuits according to programs, so that the locking motor 6 and the pull plate motor 5 sequentially share one frequency converter 1 in turn to realize soft start.

The pulling plate motor 5 is a speed reducing motor and comprises a motor and a speed reducer, and the speed reducer is provided with an output shaft; the pulling plate motor 5 is fixedly installed below the machine tailstock 16 in a suspension mode, is connected with the pulling plate contactor 3 in series and is connected with the frequency converter 1, and is used for driving the double-transmission-chain belt to move the double-pulling-plate trolley 11 to synchronously reciprocate in a soft starting mode and a speed regulating mode.

The locking motor 6 is a speed reducing motor and comprises a motor and a speed reducer, and the speed reducer is provided with an output shaft; the locking motor 6 is arranged on a motor moving platform on the machine tailstock 16, is connected with the locking contactor 4 in series and is connected with the frequency converter 1, and is used for driving the transmission gear set to drive the self-locking nut 14 to intermittently run back and forth on the common piston screw rod 15 by soft start and speed regulation.

The forward relay 7 and the reverse relay 8 have the function of converting the forward rotation and the reverse rotation of the motor by a conversion circuit; the forward relay 7 and the reverse relay 8 are installed in the PLC program control cabinet 2 and are respectively connected with the frequency converter 1, and are used for sequentially enabling the locking motor 6 and the pull plate motor 5 to rotate forward and backward according to a program so as to realize reversing operation of the locking nut 14 and the pull plate trolley 11.

The pull plate relay 9 and the locking relay 10 are relays for the variable frequency to 50Hz operation of the pull plate motor 5 or the locking motor 6 respectively; the pull plate relay 9 and the locking relay 10 are installed in the PLC program control cabinet 2 and are respectively connected with the frequency converter 1, and the locking relay 9 and the locking relay are used for enabling the locking motor 6 and the pull plate motor 6 to operate at 50Hz in a frequency conversion mode according to a program.

Assembly and final assembly of the filter chamber locking mechanism 21: the motor sliding device comprises a motor moving platform and a platform sliding groove; the motor moving platform is arranged on the machine tailstock 16, and the locking motor 6 is arranged on the motor moving platform; the self-locking nut 14 is arranged on the piston screw rod 15, and the transmission gear set is meshed with a locking motor shaft and the self-locking nut 14; a limit sensor of the locking limit device and a limit induction plate thereof are respectively and correspondingly arranged on the platform sliding groove and the motor moving platform and are communicated with the PLC control system 2 in a sensing way; the locking motor 6 can drive the transmission gear set to drive the self-locking nut 14 to rotate on the piston screw rod 15 until the self-locking nut abuts against the oil cylinder seat so as to lock the piston screw rod 15 and the like of the filter chamber.

Assembling and final assembling of the plate pulling and cake discharging mechanism 22: (1) assembling the chain transmission device: the chain transmission device comprises a three-chain wheel long shaft (a driving shaft and a chain wheel), a single chain wheel short shaft (a driven shaft and a chain wheel), a driving short single chain and a transmission long double chain; the long shafts (driving shafts and chain wheels) of the three chain wheels are arranged on a tailstock 16, close to the pulling plate motor 5, and cross over two sides of a frame 20, and drive the long shaft middle chain wheels of the short single chains, which are connected with the chain wheels of the speed reducer and the long shafts of the three chain wheels, the short shafts (driven shafts and chain wheels) of the single chain wheels are arranged on the machine head, and the driving shafts and chain wheels, the driven shafts and chain wheels, which are arranged on two sides of the frame 20, are used for driving the long double chains to be arranged on the driving shafts and chain wheels, the driven shafts and chain wheels and connected with the double pulling plate trolley 11; the double-chain coaxial double-pulling-plate trolley has the function of driving the double-pulling-plate trolley 11 to synchronously run; (2) general assembly of the plate pulling and cake unloading mechanism 22: the pulling plate motor 5 is fixedly arranged below the machine tailstock 16 in a suspension way; the filter plate 13 is supported on the filter plate slide ways of the double main beams of the frame 20 by virtue of the handles at the two sides of the filter plate, the double-pull-plate trolley 11 is arranged on the trolley guide rail 12 at the outer side of the main beam and corresponds to the filter plate handle, the two-stage transmission chain is connected with the driving device and the double-pull-plate trolley 11, the limit inductor and the limit induction plate of the pull-plate limiting device are respectively and correspondingly arranged on the pull-plate trolley 11 and the trolley guide rail 12, and the sensor is communicated with the PLC control system 2; the plate pulling motor 5 can drive the double-transmission chain to drive the double-plate pulling trolley 11 to move back and forth so as to pull the filter plates 13 piece by piece and unload cakes.

The utility model provides a combined mechanism for locking the filter chamber of the automatic filter press and unloading the filter cake by the pulling plate, which shares the frequency converter, has the advantages of element omission, simple structure, automatic frequency conversion, soft starting of the motor, reliable performance, low failure rate and lower cost; a frequency converter 1 is omitted, and the original soft start functions of a locking motor 6 and a pulling plate motor 5 are still kept by improving the connection mode; the technical problems that two independent mechanisms which do not work simultaneously are provided with the same motor frequency converter 1, the structure is complex, the production cost and the maintenance cost are high, the more complex the structure with the same function, the lower the reliability and the higher the failure rate are solved; the integral structure of two mechanisms of the filter chamber locking and the plate pulling and cake discharging is optimized, the reliability of the high-efficiency automatic filter press is improved, and the requirements of high-efficiency production, cost reduction and efficiency improvement of users of the automatic filter press are met.

Example 2

The utility model provides a combined mechanism of locking filter chamber and pulling plate discharging cake of an automatic filter press sharing a frequency converter (short for: locking and pulling plate mechanism sharing a frequency converter), the working process of locking filter chamber and pulling plate discharging cake is explained in detail as follows; for convenience of illustration, a filter plate 13 closely related to the locking and pulling mechanism of the common frequency converter is additionally arranged.

Locking and unlocking a filter chamber: under the control of the PLC program control system 2, (1) the filtration chamber is locked: when the filter plate 13 is pressed to a set pressure, the PLC control system 2 controls the closing of a contact of the locking contactor 4, the frequency converter 1 enables the locking motor 6 to be automatically and softly started, the forward rotation relay 7 enables the locking motor 6 to rotate forward, and the locking relay 10 and the frequency converter 1 enable the locking motor 6 to operate at a frequency of 50 Hz; the locking motor 5 drives the transmission gear set to drive the self-locking nut 14 to rotate forwards on the piston screw 15, the self-locking nut 14 is tightly attached to the oil cylinder seat, and the piston screw 15 is automatically locked to be equal to a locking filter chamber so as to be beneficial to pressure maintaining and filtering; (2) unlocking a filter chamber: after filtering is finished, the frequency converter 1 enables the locking motor 6 to be automatically and softly started, the reverse relay 8 enables the locking motor 6 to be reversely rotated, and the locking relay 10 and the frequency converter 1 enable the locking motor 6 to be operated at 50Hz in a frequency conversion mode; the locking motor 6 drives the transmission gear set to drive the self-locking nut 14 to rotate reversely on the piston screw rod 15, so that the self-locking nut 14 is loosened to facilitate plate pulling and cake discharging, and the intermittent reciprocating cycle work is realized.

Opening the filter plate and unloading the cake: under the control of the PLC program control system 2, (1) the trolley moves forward to grab the plate: when the filter chamber unlocks the filter plate 13 and loosens, the PLC control system 2 controls the contact of the locking contactor 4 to loosen and the contact of the pull plate contactor 3 to close, the frequency converter 1 enables the pull plate motor 5 to automatically and softly start, the forward rotation relay 7 enables the pull plate motor 5 to rotate forward, and the pull plate relay 9 and the frequency converter 1 enable the pull plate motor 5 to operate at 50Hz in a frequency conversion mode; the pulling plate motor 5 drives the double-transmission chain belt to move the double-pulling plate trolley 11 to synchronously move forwards in an idle mode; when the plate pulling manipulator touches the filter plate 13, the filter plate 13 is grabbed; (2) pulling the trolley backwards: when the pulling plate manipulator automatically grasps the filter plate 13, the front air is continuously blocked by the filter plate 13, the pulling plate motor 5 is softly started to rotate reversely by the reverse rotation relay 8 and the frequency converter 1, and the pulling plate motor 5 is operated by the pulling plate relay 9 and the frequency converter 1 in a frequency conversion way to 50 Hz; the pulling plate motor 5 drives the double-transmission chain belt to drive the double-pulling plate trolley 11 to pull plates backwards synchronously; when the pulling plate manipulator touches a limit setting, the filtering plate 13 is automatically released, and at the moment, the pulling plate manipulator continues to retreat to meet resistance, the pulling plate motor 5 is enabled to be in soft start forward rotation by the forward rotation relay 7 and the frequency converter 1, and the pulling plate motor 5 is enabled to be in frequency conversion to 50Hz operation by the pulling plate relay 9 and the frequency converter 1; the forward idle running is recovered, the reciprocating circulation work is carried out, and the filter plates 13 are automatically pulled apart one by one to realize gravity cake discharging.

The utility model provides a locking of automatic pressure filter straining chamber of sharing converter unloads cake combined mechanism with arm-tie, its beneficial effect is: the existing independent locking driving device and the existing pulling plate driving device are improved into the locking driving device and the pulling plate driving device which share the frequency converter 1, namely, one frequency converter 1 is omitted, and the original soft start functions of the locking motor 6 and the pulling plate motor 5 are still maintained by improving the connection mode; the integral structure of the two mechanisms of the filter chamber locking and the pulling plate cake unloading is optimized, the reliability of the high-efficiency automatic filter press is improved, the failure rate and the comprehensive cost of equipment are reduced, and the requirements of high-efficiency production, cost reduction and efficiency improvement of users of the automatic filter press are met.

Claims

1. A kind of automatic filter press filter chamber locking and pulling plate unloading the combined mechanism of the cake sharing the frequency converter, mainly by the locking mechanism of the filter chamber, pulling plate unloading the cake organization to make up; the filter chamber locking mechanism comprises a locking driving device, a motor sliding device, a shared piston screw rod, a transmission gear set, a self-locking nut and a locking limiting device; the pull plate cake discharging mechanism comprises a pull plate driving device, a double-pull plate trolley, a trolley guide rail, a chain transmission device and a pull plate limiting device; the method is characterized in that: the locking driving device comprises a locking contactor, a locking motor and a locking relay; the pulling plate driving device comprises a pulling plate contactor, a pulling plate motor and a pulling plate relay; the locking driving device and the pulling plate driving device share a frequency converter, a forward rotation relay and a reverse rotation relay; the frequency converter, namely a 22F-D013N104 type speed regulation frequency converter shared by the locking motor and the pull plate motor, has the function of soft starting of the motor; the pulling plate contactor and the locking contactor are LC1D18BDC type alternating current contactors, and can rapidly cut off an alternating current main loop; the pulling plate motor and the locking motor are both speed reducing motors and comprise motors and speed reducers, and the speed reducers are provided with output shafts; the forward relay and the reverse relay have the function of converting forward and reverse of the motor by a conversion circuit; the pull plate relay and the locking relay are respectively a pull plate motor or a locking motor variable-frequency to 50Hz operation relay; the interconnection relationship is: the locking motor is arranged on the motor moving platform, the pull plate motor is fixedly arranged at the upper left outside of the machine head thrust plate in a suspension mode, and the frequency converter and other electrical elements are arranged in the PLC program control cabinet; the locking motor and the locking contactor are connected in series to be connected with a frequency converter, the pull plate motor and the pull plate contactor are also connected in series to be connected with the frequency converter, namely, a locking motor circuit of the series contactor and a pull plate motor circuit of the series contactor are connected in parallel to be connected with the frequency converter, various relays are respectively connected with the frequency converter, and the frequency converter is communicated with the PLC program control system; under the control of the PLC program control system, the locking contactor and the pull plate contactor can switch circuits, so that the locking motor and the pull plate motor sequentially share one frequency converter to realize soft start; the forward relay and the reverse relay can make the motor rotate forward and reverse; the pull plate relay and the locking relay can enable the motor to operate in a frequency conversion mode; under the control of the PLC program control system, the device has the functions of soft start and variable frequency operation, automatic locking of the filter chamber to facilitate pressure maintaining and filtering, and automatic block-by-block pulling of the filter plate to facilitate gravity cake discharging.

2. The combination of filter chamber locking and cake pulling and unloading for automatic filter presses sharing a frequency converter according to claim 1, wherein: the filter chamber locking mechanism is provided with a motor sliding device which comprises a motor moving platform and a platform sliding groove; the motor moving platform is arranged on the machine tailstock, and the locking motor is arranged on the motor moving platform; the self-locking nut is arranged on the piston screw rod, and the transmission gear set is meshed with the locking motor shaft and the self-locking nut; a limit sensor of the locking limit device and a limit induction plate thereof are respectively and correspondingly arranged on the platform sliding groove and the motor moving platform and are communicated with the PLC control system through sensing; the locking motor can drive the transmission gear set to drive the self-locking nut to rotate on the piston screw until the self-locking nut is tightly attached to the oil cylinder seat so as to lock the piston screw and the like of the filter chamber.

3. The automatic filter press filtering chamber locking and pulling plate cake unloading combined mechanism of the shared frequency converter of claim 1, characterized in that: the chain transmission device arranged on the plate pulling and cake discharging mechanism comprises a long shaft of a three-chain wheel, a short shaft of a single-chain wheel, a driving short single chain and a driving long double chain; the long shaft of the three chain wheels is arranged at the tail seat close to the pulling plate motor and stretches across two sides of the frame, the short chain wheel is arranged at the head, and the transmission long double chains are arranged on the driving shaft and the chain wheel at two sides of the frame, the driven shaft and the chain wheel and are connected with the double-pulling plate trolley; the double-chain coaxial double-pulling-plate trolley has the function of driving the double-pulling-plate trolley to synchronously run; the pulling plate motor is fixedly arranged below the machine tailstock in a suspension way; the filter plate is supported on the filter plate slide ways of the double main beams of the frame by virtue of the handles on the two sides of the filter plate, the double-pulling-plate trolley is arranged on a trolley guide rail on the outer side of the main beam and corresponds to the filter plate handle, the two-stage transmission chain is connected with the driving device and the double-pulling-plate trolley, the limiting inductor of the pulling-plate limiting device and the limiting induction plate thereof are respectively and correspondingly arranged on the pulling-plate trolley and the trolley guide rail, and the sensor is communicated with the PLC control system; the pulling plate motor can drive the double-driving chain to drive the double-pulling plate trolley to move back and forth so as to pull the filter plates and unload cakes piece by piece.