Automatic discharging device of bronze salt filter press

Abstract

The utility model discloses an automatic unloading device of bronze salt filter press relates to filter press technical field, including main body frame, the main body frame top fixed mounting has the cantilever support, the inside of main body frame is provided with a plurality of filter frame, all are provided with filter screen between adjacent two filter frame, movable frame, movable frame sliding installation is in the upside of cantilever support, movable frame top fixed mounting has first electric push rod. The utility model, through the spring's elastic buffer, makes scraper and filter screen board surface always close adhesion, avoids the corner residual, then through pressure sensor real -time monitoring scraper pressure, and through control panel dynamic regulation second electric push rod's thrust, then through temperature sensor detection filter frame temperature, when below threshold value time, control panel automatic starting hot -blast machine, through the dispersed air pipe to filter screen board surface and send, reduce filter cake tackiness and hardness.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, and in particular to an automatic unloading device for a bronze salt filter press. Background Technology

[0002] In the production processes of industries such as chemical and metallurgy, the preparation of bronze salts (such as copper sulfate and copper chloride) often requires solid-liquid separation of the reaction liquid through a filter press. The automatic unloading device is the core component of the filter press to achieve continuous production, and its performance directly affects the filtration efficiency, filter cake recovery rate, and equipment operation and maintenance costs.

[0003] Because bronze salt filter cake contains crystalline particles and its viscosity is significantly affected by temperature, it is prone to clumping and hardening when the temperature is below 30°C, and its viscosity also tends to increase. In addition, the scrapers of existing unloading devices are mostly rigid fixed structures with poor fit with the filter screen, especially at the corners of the filter plate and the folds of the filter cloth, where residue is easily formed. The residual filter cake not only clogs the pores of the filter cloth, leading to a decrease in subsequent filtration efficiency, but also requires regular manual cleaning, increasing downtime and labor costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an automatic unloading device for a bronze salt filter press. This device solves the problem that bronze salt filter cake contains crystalline particles and its viscosity is significantly affected by temperature. When the temperature is below 30°C, the bronze salt filter cake is prone to clumping and hardening, and its viscosity also increases. In addition, the scrapers of existing unloading devices are mostly rigid fixed structures with poor fit with the filter screen, especially at the edges and corners of the filter plate and the folds of the filter cloth, where residue is easily formed. The residual filter cake not only clogs the pores of the filter cloth, leading to a decrease in subsequent filtration efficiency, but also requires regular manual cleaning, increasing downtime and labor costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An automatic unloading device for a bronze salt filter press includes a main frame, a suspension beam support fixedly installed on the top of the main frame, and a plurality of filter frames arranged inside the main frame, with a filter screen plate arranged between each adjacent filter frame. A movable frame is slidably mounted on the upper side of the cantilever support. A first electric push rod is fixedly mounted on the top of the movable frame, and a U-shaped frame is fixedly mounted on the output end of the first electric push rod. A heating assembly is installed on one side of the U-shaped frame and on the movable frame, and is used to heat the filter screen. A scraping assembly is mounted on the other side of the U-shaped frame and is used to scrape the filter cake off the filter screen.

[0006] Preferably, the heating assembly includes: A hot air blower is fixedly installed on one side of a movable frame. A distribution air duct is fixedly installed on one side of the bottom of the U-shaped frame. The air inlet of the distribution air duct and the air outlet of the hot air blower are connected through a branch hose.

[0007] Preferably, the scraper assembly includes: A scraper holder is fixedly installed on the other side of the bottom of the U-shaped frame. A scraper is slidably installed through the scraper holder on the side near the distribution duct. An installation plate is slidably installed on the inner wall of the scraper holder. The installation plate is fixedly connected to the scraper. Multiple springs are fixedly installed on the other side of the installation plate. A double-layer clamping plate is fixedly installed between the other ends of the multiple springs. A second electric push rod is fixedly installed inside the scraper holder. The output end of the second electric push rod is fixedly connected to the other side of the double-layer clamping plate.

[0008] Preferably, a pressure sensor is fixedly installed in the middle of the sandwich layer of the double-layer plate, a temperature sensor is fixedly installed on the outer wall of one of the filter frames, and a control panel is fixedly installed on the outer wall of the main frame. The control panel is electrically connected to the pressure sensor, the temperature sensor and the hot air blower.

[0009] Preferably, sliders are fixedly installed on both the front and rear sides of the plurality of filter frames and filter screens, and connecting ropes are fixedly installed between adjacent sliders.

[0010] Preferably, a lead screw motor is provided at the top of the suspension beam support, the motor part of the lead screw motor is fixedly connected to the suspension beam support, the lead screw part of the lead screw motor is rotatably connected to the suspension beam support, and the lead screw part of the lead screw motor passes through and is threadedly connected to the movable frame.

[0011] Preferably, a hydraulic cylinder is fixedly installed on one side of the top of the main frame, the output end of the hydraulic cylinder is fixedly connected to the filter frame on one side, the air outlet of the dispersion air duct faces the side of the scraper, and the height of the dispersion air duct is lower than the height of the scraper.

[0012] Compared with the prior art, the present invention has the following beneficial effects: First, the elastic buffer of the spring ensures that the scraper and the filter screen surface are always in close contact, avoiding residue at the edges. Then, the pressure sensor monitors the scraper pressure in real time, and the thrust of the second electric push rod is dynamically adjusted through the control panel. Next, the temperature sensor detects the temperature of the filter frame. When it is below the threshold, the control panel automatically starts the hot air fan and blows air onto the filter screen surface through the dispersion duct to reduce the stickiness and hardness of the filter cake. Then, the scraper pressure is increased to ensure the removal of hard lumps. Attached Figure Description

[0013] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the combined structure of the main frame, filter frame, and filter screen in this utility model; Figure 4 This is a schematic diagram of the combined structure of the filter frame and the filter screen in this utility model; Figure 5 This is a schematic diagram of the regional structure of the U-shaped frame in this utility model; Figure 6 This is a horizontal sectional view of the scraper holder in this utility model; Figure 7 This is a vertical sectional view of the scraper holder in this utility model; Figure 8 This is a cross-sectional view of the distributed air duct in this utility model.

[0015] Legend: 1. Main frame; 2. Cantilever bracket; 3. Filter frame; 4. Filter screen; 5. Temperature sensor; 6. Hydraulic cylinder; 7. First electric push rod; 8. Screw motor; 9. Movable frame; 10. U-shaped frame; 11. Connecting rope; 12. Slider; 13. Hot air blower; 14. Dispersing air duct; 15. Scraper seat; 16. Scraper; 17. Mounting plate; 18. Spring; 19. Second electric push rod; 20. Double-layer clamping plate; 21. Pressure sensor. Detailed Implementation

[0016] This application provides an automatic unloading device for a bronze salt filter press, which effectively solves the problem that bronze salt filter cake contains crystalline particles and its viscosity is significantly affected by temperature. When the temperature is below 30°C, the bronze salt filter cake is prone to clumping and hardening, and its viscosity also increases. In addition, the scrapers of existing unloading devices are mostly rigid fixed structures with poor fit with the filter screen, especially at the corners of the filter plate and the folds of the filter cloth, where residue is easily formed. The residual filter cake not only blocks the pores of the filter cloth, leading to a decrease in subsequent filtration efficiency, but also requires regular manual cleaning, increasing downtime and labor costs. Example

[0017] like Figure 1 - Figure 8As shown, the technical solution in this application effectively solves the problem that bronze salt filter cake contains crystalline particles and its viscosity is significantly affected by temperature. When the temperature is below 30°C, the bronze salt filter cake is prone to clumping and hardening, and its viscosity also increases. In addition, the scrapers of existing unloading devices are mostly rigid fixed structures with poor adhesion to the filter screen, especially at the edges and corners of the filter plate and the folds of the filter cloth, where residue is easily formed. The residual filter cake not only clogs the pores of the filter cloth, leading to a decrease in subsequent filtration efficiency, but also requires regular manual cleaning, increasing downtime and labor costs. The overall approach is as follows: In view of the problems existing in the prior art, this utility model provides an automatic unloading device for a bronze salt filter press, including a main frame 1, a suspension beam support 2 fixedly installed on the top of the main frame 1, a plurality of filter frames 3 arranged inside the main frame 1, and a filter screen plate 4 arranged between two adjacent filter frames 3. The movable frame 9 is slidably installed on the upper side of the suspension beam support 2. The top of the movable frame 9 is fixedly installed with a first electric push rod 7, and the output end of the first electric push rod 7 is fixedly installed with a U-shaped frame 10. A heating assembly is installed on one side of the U-shaped frame 10 and on the movable frame 9, and is used to heat the filter screen 4; The scraping assembly is installed on the other side of the U-shaped frame 10 and is used to scrape the filter cake on the filter screen plate 4.

[0018] Furthermore, the heating component includes: Hot air blower 13 is fixedly installed on one side of the movable frame 9. A distribution air duct 14 is fixedly installed on one side of the bottom of the U-shaped frame 10. The air inlet of the distribution air duct 14 and the air outlet of the hot air blower 13 are connected through a branch hose.

[0019] Furthermore, the scraper assembly includes: The scraper seat 15 is fixedly installed on the other side of the bottom of the U-shaped frame 10. A scraper 16 is slidably installed through the scraper seat 15 on the side near the distribution air duct 14. An installation plate 17 is slidably installed on the inner wall of the scraper seat 15. The installation plate 17 is fixedly connected to the scraper 16. Multiple springs 18 are fixedly installed on the other side of the installation plate 17. A double-layer clamping plate 20 is fixedly installed between the other ends of the multiple springs 18. A second electric push rod 19 is fixedly installed inside the scraper seat 15. The output end of the second electric push rod 19 is fixedly connected to the other side of the double-layer clamping plate 20.

[0020] Furthermore, a pressure sensor 21 is fixedly installed in the middle of the interlayer of the double-layered sandwich panel 20.

[0021] Furthermore, sliders 12 are fixedly installed on both the front and rear sides of multiple filter frames 3 and filter screens 4, and connecting ropes 11 are fixedly installed between adjacent sliders 12.

[0022] Furthermore, a temperature sensor 5 is fixedly installed on the outer wall of one of the filter frames 3, and a control panel is fixedly installed on the outer wall of the main frame. The control panel is electrically connected to the pressure sensor 21, the temperature sensor 5, and the hot air blower 13.

[0023] Furthermore, a lead screw motor 8 is provided on the top of the suspension beam support 2. The motor part of the lead screw motor 8 is fixedly connected to the suspension beam support 2, and the lead screw part of the lead screw motor 8 is rotatably connected to the suspension beam support 2. The lead screw part of the lead screw motor 8 passes through and is threadedly connected to the movable frame 9. The lead screw part of the lead screw motor 8 is spatially offset from the output end of the first electric push rod 7.

[0024] Furthermore, a hydraulic cylinder 6 is fixedly installed on one side of the top of the main frame 1. The output end of the hydraulic cylinder 6 is fixedly connected to the filter frame 3 on one side. The air outlet of the dispersion air duct 14 faces the scraper 16. The height of the dispersion air duct 14 is lower than the height of the scraper 16.

[0025] in: Main frame 1: As the basic load-bearing structure of the device, it is made of Q235 carbon steel and welded into a rectangular frame structure. The inner side is reserved for the installation of filter frames and filter screens to ensure that the filter components can slide stably. Cantilever bracket 2: It is fixedly installed at the top center of the main frame 1 and is made of aluminum alloy profile. Its top is equipped with a screw motor mounting seat and a metal guide rod to support the movement of the movable frame 9. Filter frame 3: 10 to 15 frames are provided (adjustable according to filter press specifications). They are made of polypropylene injection molding and have sealing strips on the edges to ensure sealing during filtration. Filter screen 4: Located between two adjacent filter frames 3, it is made of 316 stainless steel with a mesh diameter of 0.1 to 0.3 mm. The surface is coated with polytetrafluoroethylene to enhance corrosion resistance and non-stick properties, and is used to intercept bronze salt filter cake. Temperature sensor 5: Model PT100, fixedly installed on the outer wall of filter frame 3 in the middle position, used to detect the temperature of the filter area, with a detection range of 0-100℃; Hydraulic cylinder 6: Fixedly installed on the top left side of the main frame 1, model HSG01-100 / 50, the output end is fixedly connected to the leftmost filter frame 3. Through the hydraulic pump, which is not shown in the figure, it drives the extension and retraction to realize the dispersion (when unloading) or closure (when pressing filter) of filter frame 3 and filter screen plate 4. The first electric push rod 7, model DTZ300, is fixedly installed at the top center of the movable frame 9, with its output end pointing vertically downward and fixedly connected to the U-shaped frame 10. Screw motor 8: A servo screw motor (model SFU2005) is adopted. The motor part is fixed to the right end of the suspension beam bracket 2, and the screw part (the length matches the suspension beam bracket) is rotatably connected to the suspension beam bracket 2, and passes through the movable frame 9 and is threadedly connected to it. Movable frame 9: It adopts a welded steel structure and has a slider at the bottom that matches the track of the suspension beam support 2. It is driven by the screw motor 8 to move horizontally along the suspension beam support 2 (movement accuracy ±0.5mm) and is used to drive the U-shaped frame 10 to align with different filter screens 4. U-shaped frame 10: Made of aluminum alloy plate bent into shape (opening downwards), with an inner width slightly larger than the thickness of filter screen plate 4 (leaving a gap of 5-8mm), used to wrap around both sides of filter screen plate 4 when descending, to realize heating and scraping operations; Connecting rope 11 and slider 12: Slider 12 is fixedly installed on both the front and rear sides of the filter frame 3 and the filter screen 4. The slider 12 is embedded in the slide rail inside the main frame 1 to ensure that the filter frame 3 and the filter screen 4 can slide in the horizontal direction. Adjacent sliders 12 are connected by connecting rope 11, which is made of high-strength nylon rope with a diameter of 5mm, to realize the synchronous dispersion or closure of the filter components.

[0026] Hot air blower 13: Model ST-801, power 2kW, fixedly installed on the left side of the movable frame 9, with the air outlet connected to a branch hose, using high-temperature resistant silicone tubing, 30mm in diameter; Distributed air duct 14: Fixedly installed on the bottom left side of U-shaped frame 10, made of stainless steel pipe, with air outlet holes evenly opened on the side of the pipe facing the filter screen plate 4, with a hole diameter of 3mm and a hole spacing of 50mm; its air inlet is connected to the hot air blower 13 through a branch hose, and the height of the air outlet is lower than the scraper 16 by 10-15mm, and faces the scraper 16 to ensure that the hot air acts on the filter cake first and then is scraped off by the scraper; Scraper holder 15: It is fixedly installed on the bottom right side of the U-shaped frame 10, and is made of cast iron with a pre-reserved installation cavity inside; Scraper 16: Made of polytetrafluoroethylene composite metal sheet (3mm thick), with an arc-shaped blade (fitting to the surface of the filter screen), penetrating the left side wall of scraper seat 15 and slidingly connected to it; Mounting plate 17: Located inside scraper seat 15, it is fixedly connected to the rear end of scraper 16 and can slide along the inner wall of scraper seat 15; Spring 18: 4 to 6 in total (evenly distributed), one end is connected to the mounting plate 17, and the other end is connected to the double-layer clamping plate 20 (spring stiffness coefficient 50N / mm). The second electric push rod 19, model DTZ100, is fixedly installed inside the right side of the scraper seat 15. Its output end is fixedly connected to the right side of the double-layer clamping plate 20. It is used to push the double-layer clamping plate 20 to compress the spring 18, thereby indirectly adjusting the pressure of the scraper 16 on the filter screen plate 4. Double-layer clamping plate 20: Composed of two steel plates (with a 10mm gap in the middle), located on the right side of mounting plate 17; Pressure sensor 21: Model PT124G-111, is fixedly installed in the middle of the sandwich layer of the double-layer clamping plate 20, and is used to monitor the pressure of spring 18 in real time (detection range 0-500N) and transmit the data to the control panel; Control panel: Fixedly installed on the outer wall of the main frame 1, using a PLC controller (model S7-200), which is electrically connected to pressure sensor 21, temperature sensor 5, hot air blower 13, various electric push rods and motors to realize automated control.

[0027] Working principle: First, after the filter press is completed, the hydraulic cylinder 6 is controlled to retract, causing the filter frame 3 on one side to move to the left. Then, the filter frame 3 and the filter screen plate 4 are connected together by the connecting rope 11 and the slider 12. As the hydraulic cylinder 6 retracts, the connecting rope 11 is taut. At this time, the multiple filter frames 3 and filter screen plates 4 are dispersed, which makes it easier for the U-shaped frame 10 to be inserted into the gap between the filter frame 3 and the filter screen plate 4 for unloading.

[0028] The second step involves activating the lead screw motor 8 to drive the movable frame 9 to move above the designated filter plate 4. Then, by controlling the extension of the first electric push rod 7, the U-shaped frame 10 descends. During descent, the filter plate 4 inserts into the inside of the U-shaped frame 10, positioning the dispersion duct 14 and scraper seat 15 on either side of the filter plate 4. When the filter plate 4 is inserted into the inside of the U-shaped frame 10, the second electric push rod 19 extends, causing its output end to push the double-layer clamping plate 20 closer to the filter plate 4. This movement is then transmitted through the spring 18. The mounting plate 17 and scraper 16 are moved closer to the filter screen plate 4. When the mounting plate 17 reaches its limit position, the second electric push rod 19 is extended, causing the double-layer clamping plate 20 to compress the spring 18, thereby providing pressure to the scraper 16 and ensuring a tight fit between the scraper 16 and the filter screen plate 4. During the compression of the spring 18, the pressure sensor 21 in the double-layer clamping plate 20 can detect the pressure and transmit the data signal to the control panel. Then, as the U-shaped frame 10 continues to descend, the filter cake attached to the surface of the filter screen plate 4 can be scraped off.

[0029] Thirdly, before unloading the filter cake on the filter screen plate 4, the temperature of the surface of the filter frame 3 can be detected by the temperature sensor 5. If the temperature is low, the hardness of the bronze salt filter cake will increase. At this time, the hot air blower 13 can be turned on and warm air can be delivered to the dispersion air pipe 14 through the branch hose and then discharged from the air outlet to heat the surface of the filter screen plate 4, thereby reducing the viscosity and hardness of the bronze salt filter cake, making it easier to clean. Then, by controlling the extension dimension of the second electric push rod 19, the deformation of the spring 18 is increased, thereby increasing the pressure of the scraper 16 on the surface of the filter screen plate 4, so as to better scrape off the clumps of bronze salt filter cake. The pressure sensor 21 monitors the pressure to more accurately control the pressure of the scraper 16 on the filter screen plate 4.

[0030] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An automatic unloading device for a bronze salt filter press, characterized in that, include: The main frame (1) has a cantilever bracket (2) fixedly installed on the top of the main frame (1). Multiple filter frames (3) are provided on the inner side of the main frame (1), and filter screens (4) are provided between two adjacent filter frames (3). The movable frame (9) is slidably installed on the upper side of the cantilever support (2). A first electric push rod (7) is fixedly installed on the top of the movable frame (9). A U-shaped frame (10) is fixedly installed at the output end of the first electric push rod (7). A heating assembly is installed on one side of the U-shaped frame (10) and on the movable frame (9), and is used to heat the filter screen (4); A scraping assembly is mounted on the other side of the U-shaped frame (10) and is used to scrape the filter cake on the filter screen (4).

2. The automatic unloading device for a bronze salt filter press as described in claim 1, characterized in that, The heating component includes: Hot air blower (13), the hot air blower (13) is fixedly installed on one side of the movable frame (9), and a distribution air duct (14) is fixedly installed on one side of the bottom of the U-shaped frame (10). The air inlet of the distribution air duct (14) and the air outlet of the hot air blower (13) are connected by a branch hose.

3. The automatic unloading device for a bronze salt filter press as described in claim 1, characterized in that, The scraper assembly includes: Scraper seat (15), the scraper seat (15) is fixedly installed on the other side of the bottom of the U-shaped frame (10), the scraper seat (15) has a scraper (16) slidably installed through the side of the scraper seat (15) near the distribution air duct (14), the inner wall of the scraper seat (15) is slidably installed with an installation plate (17), the installation plate (17) is fixedly connected to the scraper (16), the other side of the installation plate (17) is fixedly installed with multiple springs (18), the other ends of the multiple springs (18) are fixedly installed with a double-layer clamping plate (20), the scraper seat (15) is fixedly installed with a second electric push rod (19), the output end of the second electric push rod (19) is fixedly connected to the other side of the double-layer clamping plate (20).

4. The automatic unloading device for a bronze salt filter press as described in claim 3, characterized in that: A pressure sensor (21) is fixedly installed in the middle of the interlayer of the double-layer clamp (20).

5. The automatic unloading device for a bronze salt filter press as described in claim 1, characterized in that: Slider (12) is fixedly installed on both the front and rear sides of the multiple filter frames (3) and filter screens (4), and connecting ropes (11) are fixedly installed between two adjacent sliders (12).

6. The automatic unloading device for a bronze salt filter press as described in claim 1, characterized in that: A temperature sensor (5) is fixedly installed on the outer wall of one of the filter frames (3).

7. The automatic unloading device for a bronze salt filter press as described in claim 1, characterized in that: The top of the suspension beam support (2) is provided with a lead screw motor (8). The motor part of the lead screw motor (8) is fixedly connected to the suspension beam support (2), and the lead screw part of the lead screw motor (8) is rotatably connected to the suspension beam support (2). The lead screw part of the lead screw motor (8) passes through and is threadedly connected to the movable frame (9). The lead screw part of the lead screw motor (8) is spatially offset from the output end of the first electric push rod (7).

8. The automatic unloading device for a bronze salt filter press as described in claim 2, characterized in that: A hydraulic cylinder (6) is fixedly installed on one side of the top of the main frame (1). The output end of the hydraulic cylinder (6) is fixedly connected to the filter frame (3) on one side. The air outlet of the dispersion duct (14) faces the scraper (16) and the height of the dispersion duct (14) is lower than the height of the scraper (16).

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