Plate-and-frame filter press

Abstract

The plate-and-frame filter press comprises a rack, a filter pressing plate, a hydraulic mechanism and a discharging mechanism, the discharging mechanism comprises a plate pulling trolley, a supporting frame and a scraper assembly, walking guide rails are arranged on the two sides of the rack, the plate pulling trolley is arranged on the walking guide rails, the supporting frame is connected with the plate pulling trolley, and the scraper assembly is arranged on the supporting frame. The scraping plate assembly comprises a scraping plate, a lifting beam, a lifting motor, a rotating shaft and a lifting screw rod, the rotating shaft is arranged on a cross beam of the supporting frame, a first bevel gear is arranged on the rotating shaft, the lifting motor is connected with the rotating shaft, the lifting screw rod is connected with the lifting beam, a second bevel gear is arranged on the lifting screw rod, the second bevel gear is in meshed connection with the first bevel gear, and the scraping plate is arranged on the lifting beam. The lifting motor drives the rotating shaft to rotate, and the rotating shaft drives the lifting screw rod to rotate, so that the lifting beam and the scraping plate are driven to lift and scrape off a filter cake adhered to the filter pressing plate, manual scraping and shoveling are not needed, the workload and the labor intensity of operators are reduced, the operation risk is reduced, and the unloading process is safe and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of filter pressing, in particular to a plate-frame filter press. Background Art

[0002] In the process of recycling and comprehensively utilizing valuable metals in ferroalloy smelting waste slag, the final slag produced after recycling can be sold to cement plants as building materials. When sold, the moisture content of the final slag needs to be controlled to ≤10%. Therefore, the final slag needs to be squeezed dry by filter press equipment before it can be sold. In the production process of the filter press, the filter cake is generally tightly fitted with the filter cloth. Therefore, when the filter press plate is pulled apart, the filter cake usually does not fall off completely automatically. At this time, manual cleaning of the remaining filter cake is required. During manual operation, the operator holds a tool and goes deep between the filter press plates to scrape off the remaining filter cake on it. During the unloading process of the plate and frame filter press, multiple frequent operations are required, the operation intensity is high, the unloading efficiency is low, and during the operation, the operator's arm may extend into the filter press plate, and the operation risk is high. Utility Model Content

[0003] The main purpose of the utility model is to overcome the defects of the above-mentioned background technology and provide a plate and frame filter press.

[0004] To achieve the above-mentioned purpose, the plate and frame filter press proposed in the utility model includes a frame, a plurality of filter plates arranged on the frame and a hydraulic mechanism for driving and pressing the filter plates, and is characterized in that it also includes a discharge mechanism, the discharge mechanism includes a plate pulling trolley, a support frame and a scraper assembly, walking guide rails are respectively provided on both sides of the frame, the plate pulling trolley is arranged on the walking guide rails, the support frame spans above the filter plate and is connected to the plate pulling trolleys on both sides, the scraper assembly is arranged on the support frame, and the scraper assembly includes a scraper plate, a lifting beam, a lifting motor, a rotating shaft and a lifting screw. The rotating shaft is rotatably arranged on the cross beam of the support frame, and first bevel gears are arranged at both ends of the rotating shaft. The output end of the lifting motor is connected to the rotating shaft. Two lifting screw rods are arranged and rotatably arranged beside the inner side of the column of the support frame. The two side walls opposite to each other of the column are respectively vertically provided with guide grooves. The two ends of the lifting beam are slidably connected with the guide grooves. The middle parts of the lifting screw rods on both sides are matched and connected with the lifting beam. The top of the lifting screw rod passes through the cross beam and is provided with a second bevel gear. The second bevel gear is meshed and connected with the first bevel gear. The scraper plate is arranged on the lifting beam. The lifting motor drives the rotating shaft to rotate, and the rotating shaft drives the lifting screw rods on both sides to rotate synchronously at the same time, thereby driving the lifting beam to lift and lower. The scraper plate scrapes off the filter cake stuck on the filter cloth during the lifting process, and there is no need to manually scrape, which greatly reduces the workload and labor intensity of the operators, reduces the operation risk, and the unloading process is safe and efficient, realizing the automatic unloading of the plate and frame filter press.

[0005] To further optimize the technical solution, a horizontal screw rod is provided on the walking guide rail, the middle part of the horizontal screw rod is connected with the plate pulling trolley, one end of the horizontal screw rod is connected with a driving motor, and the driving motors on both sides are synchronously operated to drive the plate pulling trolley to move back and forth. The driving motor drives the horizontal screw rod to rotate, thereby driving the plate pulling trolley to reciprocate on the walking guide rail to perform the plate pulling operation.

[0006] To further optimize the technical solution, the plate-pulling trolley includes a trolley body, a mounting seat, a plate-taking claw and a plate-pulling claw, the mounting seat is arranged on the trolley body, the plate-taking claw and the plate-pulling claw are respectively mounted on the mounting seat through a pin shaft, and the middle part of the horizontal screw rod is connected with the trolley body. The plate-pulling trolley is driven to move by the horizontal screw rod, so that when the plate-pulling trolley pulls the filter press plate, the plate-pulling claw and the plate-pulling claw cooperate to pull the filter press plate back.

[0007] To further optimize the technical solution, the travel guide rail is a U-shaped groove structure, the horizontal screw rod is mounted in the U-shaped groove structure, the vehicle body is an E-shaped structure, and the open end of the vehicle body slides and clamps on the U-shaped groove structure, so that four sliding connection surfaces are formed between the vehicle body and the travel guide rail. By increasing the four sliding connection surfaces between the vehicle body and the travel guide rail and increasing the sliding contact area between the plate pulling trolley and the travel guide rail, the operation of the plate pulling trolley is more stable and the pressure bearing capacity of the plate pulling trolley is stronger.

[0008] To further optimize the technical solution, a plurality of guide rollers are provided on the sliding surface between the vehicle body and the walking guide rail, and the guide rollers are used to convert the sliding friction of the sliding connection surface into rolling friction, thereby reducing the friction resistance when the pull plate trolley moves.

[0009] To further optimize the technical solution, a notch is provided on the mounting seat, shaft seats are provided on both sides of the notch, a vibration shaft across the notch is provided on the shaft seat, a cam is provided in the middle of the vibration shaft, a third bevel gear is provided at one end of the vibration shaft, a fourth bevel gear is provided at the bottom end of the lifting screw, and the third bevel gear and the fourth bevel gear are meshed and connected. When scraping, the lifting screw drives the vibration shaft to rotate, and the cam drives the filter press plate to shake up and down to shake off the sticky material, further improving the unloading efficiency, and the shaking of the filter press plate does not require additional power, effectively reducing costs.

[0010] To further optimize the technical solution, filter plate handles are provided on both sides of the filter press plate, and the filter press plate is mounted on the frame through the filter plate handles at both ends, and the filter plate handles correspond to the plate removing claws, the plate pulling claws and the cam respectively.

[0011] To further optimize the technical solution, the scraper plate is provided with a mounting rod, the top end of which is connected to the lifting beam. The scraper plate is extended downward by the mounting rod to extend the distance that the scraper plate can scrape.

[0012] To further optimize the technical solution, the scraper plate is arranged at an angle, and the bottom end thereof corresponds to the side wall of the filter press plate. The inclined arrangement enables the scraper plate to better scrape off the filter cake attached to the side wall of the filter press plate when it is lifted or lowered.

[0013] The technical solution is further optimized, and also includes a control unit, which is electrically connected to the lifting motor, the driving motor, the hydraulic mechanism and the plate pulling trolley, and is used to control the automatic operation of the entire plate and frame filter press to achieve automatic filtration and unloading.

[0014] The beneficial effects of the utility model include: when the filter press plate is pulled back by the plate pulling trolley, the filter cake attached to the side wall of the filter press plate automatically falls downward under the action of gravity, while the filter cake stuck to the filter cloth that cannot fall off automatically is driven to rotate by the lifting motor, and the rotating shaft simultaneously drives the lifting screws on both sides to rotate synchronously, thereby driving the lifting beam to lift and lower. During the lifting process, the filter cake stuck to the filter cloth of the filter press plate is scraped off by the scraper plate, and there is no need for manual scraping, which greatly reduces the workload and labor intensity of the operators and reduces the operating risks. The unloading process is safe and efficient, and the automatic unloading of the plate and frame filter press is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of a plate and frame filter press in an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the unloading mechanism and the walking guide rail in the embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the unloading mechanism without the supporting frame in the embodiment of the utility model.

[0018] Figure 4 It is a schematic diagram of a perspective of a plate pulling trolley in an embodiment of the utility model.

[0019] Figure 5 It is a schematic diagram of another viewing angle of the plate pulling trolley in the embodiment of the utility model.

[0020] 1. The drawing reference numerals: 1. frame; 101. walking guide rail; 102. horizontal screw rod; 103. driving motor; 2. filter press plate; 201. filter plate handle; 3. hydraulic mechanism; 4. unloading mechanism; 4.01. plate pulling trolley; 4.011. car body; 4.012. mounting seat; 4.013. plate taking claw; 4.014. plate pulling claw; 4.015. pin shaft; 4.016. guide roller; 4.017. notch; 4.018. shaft seat; 4.019. vibration shaft; 4.0110. cam; 4.011. third bevel gear; 4.02. support frame; 4.021. cross beam; 4.022. column; 4.023. guide groove; 4.03. scraper assembly; 4.031. scraper plate; 4.032. lifting beam; 4.033. lifting motor; 4.034. rotating shaft; 4.035. lifting screw rod; 4.036. first bevel gear; 4.037. second bevel gear; 4.038. fourth bevel gear; 4.039 mounting rod; 5. control unit. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit connection.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] See also Figures 1 to 5In one embodiment, a plate and frame filter press disclosed in the invention comprises a frame 1, a plurality of filter plates 2 arranged on the frame 1, and a hydraulic mechanism 3 for driving and pressing the filter plates 2, and also comprises a discharge mechanism 4, the discharge mechanism 4 comprises a plate pulling trolley 401, a support frame 402 and a scraper assembly 403, walking guide rails 101 are respectively arranged on both sides of the frame 1, the plate pulling trolley 401 is respectively arranged on the walking guide rails 101 on both sides, the support frame 402 spans above the filter plate 2 and is connected to the plate pulling trolley 401 on both sides, and the scraper assembly 403 is arranged on the support frame 402, when the plate pulling trolley 401 on both sides moves back and forth, it can synchronously drive the scraper assembly 403 to move; the scraper assembly 403 comprises a scraper plate 4031, a lifting beam 4032, a lifting motor 4033, a shaft 4034 and a lifting screw rod 4035. The shaft 4034 is rotatably arranged on the top surface of the cross beam 4021 of the support frame 402. A first bevel gear 4036 is arranged at both ends of the shaft 4034. The output end of the lifting motor 4033 is connected to the shaft 4034. Specifically, the lifting motor 4033 is also arranged on the top surface of the cross beam 4021. The lifting motor 4033 preferably adopts a double-output shaft motor. The two output ends are connected to the shaft 4034 to drive the shaft 4034 to rotate. Two lifting screw rods 4035 are provided and are rotatably arranged beside the inner sides of the columns 4022 of the support frame 402. Specifically, the top end of the lifting screw rod 4035 is rotatably connected to the cross beam 4021. The ends are rotatably connected to the plate pulling trolley 401 and are arranged parallel to the column 4022. Guide grooves 4023 are vertically provided on the opposite side walls of the column 4022. The two ends of the lifting beam 4032 are slidably connected to the guide grooves 4023. The middle parts of the lifting screw rods 4035 on both sides are matched with the lifting beam 4032. Specifically, the lifting beam 4032 is provided with a nut pair (not shown) that cooperates with the lifting screw rods 4035, so that the rotation of the lifting screw rods 4035 on both sides can be converted into the lifting movement of the lifting beam 4032. The top end of the lifting screw rod 4035 passes through the cross beam 4021 and is provided with a second bevel gear 4037. The second bevel gear 4037 is meshed with the first bevel gear 4036. The scraper plate 4031 is arranged on the lifting beam On 4032, in the present embodiment, after the filtration is completed, the filter plate 2 is pulled back by the plate pulling trolley 401, and the filter cake on the side wall of the filter plate 2 automatically falls to the bottom under the action of gravity, while the filter cake stuck to the filter cloth that cannot fall off automatically is driven by the lifting motor 4033 to rotate the rotating shaft 4034, and the rotating shaft 4034 simultaneously drives the lifting screw rods 4035 on both sides to rotate synchronously, thereby driving the lifting beam 4032 to lift and lower. During the lifting process, the scraper plate 4031 is pressed against the side wall of the filter plate 2 to scrape off the filter cake stuck on the filter cloth of the filter plate 2, without the need for manual scraping, which greatly reduces the workload and labor intensity of the operators, reduces the operating risks, and makes the unloading process safe and efficient, thereby realizing the automatic unloading of the plate and frame filter press.

[0026] In one embodiment, a horizontal screw rod 102 is provided on the walking guide rail 101, and the middle part of the horizontal screw rod 102 is connected with the plate pulling trolley 401, and one end of the horizontal screw rod 102 is connected with a driving motor 103. The driving motors 103 on both sides operate synchronously to drive the plate pulling trolley 401 to move back and forth. Specifically, a nut pair (not shown) that cooperates with the horizontal screw rod 102 is provided on the plate pulling trolley 401, so that the rotational motion of the horizontal screw rods 102 on both sides can be converted into horizontal reciprocating motion of the plate pulling trolley 401, and the driving motors 103 on both sides are connected to the driving motors 103 on both sides. 3 can ensure that the synchronous operation of the plate pulling trolley 401 on both sides has the same running direction and speed, and will not cause the filter plate 2 to tilt when pulling the plate. In this embodiment, the drive motors 103 on both sides preferably adopt servo motors, and the synchronization of the two drive motors 103 adopts any one of the control methods of encoder feedback synchronization, PWM synchronization or master-slave synchronization for synchronous control. Compared with the traditional filter press which adopts chain drive to drive the plate pulling trolley 401 to move, the screw drive has better stability and effectively reduces vibration, impact and noise during operation.

[0027] In a specific example, the plate pulling trolley 401 includes a vehicle body 4011, a mounting seat 4012, a plate removing claw 4013 and a plate pulling claw 4014, the mounting seat 4012 is arranged on the vehicle body 4011, the plate removing claw 4013 and the plate pulling claw 4014 are respectively installed on the mounting seat 4012 through a pin shaft 4015, and the middle part of the horizontal screw rod 102 is connected with the vehicle body 4011. The plate pulling trolley 401 is driven by the horizontal screw rod 102 to pull the filter press plate 2. When the plate taking claw 4013 of the plate pulling trolley 401 touches the filter press plate 2, it stops moving forward. The plate taking claw 4013 is equivalent to a limit switch. The driving motor 103 reverses to drive the plate pulling trolley 401 to retreat. When retreating, the plate pulling claw 4014 will pull the filter press plate 2 back. When the plate taking claw 4013 touches the pulled back filter press plate 2, the plate taking claw 4013 will be pressed down, and the plate pulling trolley 401 stops retreating. This action is repeated until the filter press plate 2 is pulled out.

[0028] In the specific example, the walking guide rail 101 is a U-shaped groove structure with both sides of the U-shaped groove closed. The horizontal screw rod 102 is installed in the U-shaped groove. The car body 4011 is an E-shaped structure. The open end of the car body 4011 slides on the U-shaped groove structure to form four sliding connection surfaces between the car body 4011 and the walking guide rail 101. By increasing the sliding contact surface, the operation of the plate pulling trolley 401 is more stable and the pressure-bearing capacity is stronger.

[0029] In a specific example, a plurality of guide rollers 4016 are provided at the sliding surface between the vehicle body 4011 and the travel guide rail 101. The guide rollers 4016 convert the sliding friction of the sliding connection surface into rolling friction, thereby reducing the friction resistance and making the plate pulling vehicle 401 travel more smoothly.

[0030] In one embodiment, a notch 4017 is provided on the mounting seat 4012, shaft seats 4018 are provided on both sides of the notch 4017, a vibration shaft 4019 is provided on the shaft seat 4018 to cross the notch 4017, a cam 40110 is provided in the middle of the vibration shaft 4019, a third bevel gear 40111 is provided at one end of the vibration shaft 4019, a fourth bevel gear 4038 is provided at the bottom end of the lifting screw 4035, the third bevel gear 40111 and the fourth bevel gear 4038 are meshingly connected, filter plate handles 201 are provided on both sides of the filter press plate 2, the filter press plate 2 is mounted on the frame 1 through the filter plate handles 201 at both ends, and the filter plate handles 201 correspond to the plate taking claw 4013, the plate pulling claw 4014 and the cam 40110 respectively. When the plate pulling trolley 401 pulls the filter plate 2, the plate pulling claw 4014 presses against the rear side of the filter plate handle 201 and moves it back. At this time, the bottom surface of the filter plate handle 201 presses the outer peripheral surface of the cam 40110. When the pulling stops, the lifting motor 4033 starts, driving the scraper assembly 403 to lift and scrape the material, and also drives the cam 40110 to rotate, so that the cam 40110 drives the filter plate 2 to vibrate up and down, shake off the sticky material, and further improve the unloading efficiency.

[0031] In one embodiment, a mounting rod 4039 is provided on the scraper plate 4031, and the top end of the mounting rod 4039 is connected to the lifting beam 4032. The scraper plate 4031 is extended downward by the mounting rod 4039 to extend the scraper plate 4031 to scrape a distance that can be extended, thereby preventing the scraper plate 4031 from being unable to scrape the bottom position of the filter press plate 2.

[0032] In a specific example, the scraper plate 4031 is arranged at an inclination, and the bottom end corresponds to the side wall of the filter press plate 2. The inclination arrangement enables the scraper plate 4031 to better scrape off the filter cake on the side wall of the filter press plate 2 when it is lifted.

[0033] In one embodiment, it also includes a control unit 5, which is electrically connected to the lifting motor 4033, the drive motor 103, the hydraulic mechanism 3 and the plate pulling trolley 401, and is used to control the automatic operation of the entire plate and frame filter press. The control unit 5 is controlled by any one of PLC, MCU microcontroller or single-chip computer, preferably PLC. The control unit 5 controls the forward and reverse rotation of the drive motor 103, thereby controlling the forward or backward movement of the plate pulling trolley 401, controls the forward and reverse rotation of the lifting motor 4033, thereby controlling the lifting and lowering of the scraper plate 4031, and controls the hydraulic mechanism 3 to press the filter plate 2 or retreat to perform filtration operation, thereby realizing automatic control.

[0034] The above content is a further detailed description of the utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the scope of protection of the utility model. In the description of this specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope of protection of the patent application.

Claims

1. A plate-and-frame filter press, comprising a frame, a plurality of filter press plates arranged on the frame, and a hydraulic mechanism for driving and pressing the filter press plates, characterized in that: The cam is connected with the support frame to move the lifting of the lifting device to move the lifting of the lifting plate, the lifting of the lifting plate is connected with the support frame by the lifting of the lifting device, and the lifting of the lifting device is connected with the lifting of the lifting plate.

2. The plate and frame filter press according to claim 1, characterized in that: A horizontal screw rod is provided on the walking guide rail, the middle part of the horizontal screw rod is connected with the plate pulling trolley, one end of the horizontal screw rod is connected with a driving motor, and the driving motors on both sides operate synchronously to drive the plate pulling trolley to move back and forth.

3. The plate and frame filter press according to claim 2, characterized in that: The plate pulling trolley includes a car body, a mounting seat, a plate removing claw and a plate pulling claw. The mounting seat is arranged on the car body, and the plate removing claw and the plate pulling claw are respectively installed on the mounting seat through pins, and the middle part of the horizontal screw rod is cooperatively connected with the car body.

4. The plate and frame filter press according to claim 3, characterized in that: The travel guide rail is a U-shaped groove structure, the horizontal screw rod is mounted in the U-shaped groove structure, the vehicle body is an E-shaped structure, and the open end of the vehicle body slides and clamps on the U-shaped groove structure, so that four sliding connection surfaces are formed between the vehicle body and the travel guide rail.

5. The plate and frame filter press according to claim 4, characterized in that: A plurality of guide rollers are arranged on the sliding surface between the vehicle body and the walking guide rail.

6. The plate and frame filter press according to claim 5, characterized in that: A notch is provided on the mounting seat, shaft seats are provided on both sides of the notch, a vibration shaft spanning the notch is provided on the shaft seat, a cam is provided in the middle of the vibration shaft, a third bevel gear is provided at one end of the vibration shaft, a fourth bevel gear is provided at the bottom end of the lifting screw rod, and the third bevel gear is meshingly connected with the fourth bevel gear.

7. The plate and frame filter press according to claim 6, characterized in that: Filter plate handles are provided on both sides of the filter press plate, and the filter press plate is mounted on the frame through the filter plate handles at both ends, and the filter plate handles correspond to the plate taking claws, the plate pulling claws and the cam respectively.

8. The plate and frame filter press according to claim 7, characterized in that : A mounting rod is provided on the scraper plate, and the top end of the mounting rod is connected to the lifting beam.

9. The plate and frame filter press according to claim 8, characterized in that: The scraper plate is arranged obliquely, and the bottom end thereof corresponds to the side wall of the filter press plate.

10. The plate and frame filter press according to claim 9, characterized in that: It also includes a control unit, which is electrically connected to the lifting motor, the driving motor, the hydraulic mechanism and the plate pulling trolley, and is used to control the automatic operation of the entire plate and frame filter press.

Images