Automatic plate frame machine and method of using the same

Abstract

An automatic plate-and-frame machine includes a filter press unit, a discharge drive component and a cleaning device. The number of filter press units is multiple, and the filter plates of the multiple filter press units are arranged in sequence. A filter press space for squeezing sludge is formed between the filter plates. The filter press unit includes a filter plate, a filter cloth, a roller and a discharge assembly. The filter cloth surrounds the outer side of the filter plate, and the roller is located on the inner side of the filter cloth. The discharge drive component is used to drive the roller to rotate, and the roller drives the filter cloth to rotate around the outer side of the filter plate. When the filter cloth rotates around the outer side of the filter plate, the sludge on the outer surface of the filter cloth is scraped off by the discharge component, and the cleaning device is used to clean the filter cloth. It also relates to a method for using the above-mentioned automatic plate-and-frame machine. After the filter press dehydration is completed, the roller rotates to drive the filter screen to rotate around the outer side of the filter plate, so that the scraper scrapes off the sludge on the outer surface of the filter cloth, which can realize automatic unloading without taking up extra space. It is economical and practical, and belongs to the field of sludge dehydration equipment.

Description

Technical Field

[0001] The present invention relates to the field of sludge dewatering equipment, and in particular to an automatic plate-and-frame machine and a method for using the same. Background Art

[0002] The treatment of sludge wastewater is a critical environmental challenge that must be addressed. Currently, sludge dewatering machines are commonly used for this purpose. Commonly used sludge dewatering machines include plate and frame dewatering machines, belt dewatering machines, and screw presses. Plate and frame dewatering machines press the sludge into a filter cake. The cake must be discharged after each dewatering operation. This process results in sludge residue forming on the outside of the filter cloth. To prevent this residue from clogging the filter cloth pores and impacting the dewatering effect, the filter plates are typically separated and discharged manually, or large-scale cleaning and unloading equipment is used to discharge the material from top to bottom. Regular cleaning of the filter cloth is also required. Manual operation is time-consuming, inefficient, and labor-intensive, and is difficult to handle. Large-scale equipment, on the other hand, takes up a lot of space, consumes a lot of electricity, and has high maintenance costs, making it uneconomical and cost-effective. Summary of the Invention

[0003] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide an automatic plate and frame machine that can automatically unload and a method of using the same.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic plate and frame machine, including a filter press unit, a discharge drive component and a cleaning device, the number of the filter press units is multiple, the filter plates of the multiple filter press units are arranged in sequence, and a filter press space for squeezing sludge is formed between the filter plates. The filter press unit includes a filter plate, a filter cloth, a roller and a discharge assembly. The filter cloth is wrapped around the outside of the filter plate, and the roller is located on the inside of the filter cloth. The discharge drive component is used to drive the roller to rotate, and the roller drives the filter cloth to rotate around the outside of the filter plate. When the filter cloth rotates around the outside of the filter plate, the sludge on the outer surface of the filter cloth is scraped off by the discharge component, and the cleaning device is used to clean the filter cloth.

[0005] With this structure, after filter pressing and dehydration are complete, the unloading drive unit drives the rollers, which in turn rotate the filter cloth around the outside of the filter plates. The scraper then scrapes the sludge off the outer surface of the filter cloth, achieving automatic unloading. This automatic plate-and-frame machine adds an automatic unloading component to an existing plate-and-frame machine, taking up no additional space and being economical and practical.

[0006] As a preferred embodiment, an automatic plate and frame machine further includes a frame, the filter plate is slidably connected to the frame, and the roller is rotatably connected to the top and bottom ends of the filter plate.

[0007] As a preference, in a filter press unit, the number of filter plates is one, the number of discharge assemblies is two groups, the discharge assemblies include scrapers, the two groups of scrapers are respectively located on the outside of the rollers at the top and bottom ends of the filter plates, the blades of the scrapers face the rollers, a gap is left between the scrapers and the rollers, and the filter cloth passes through the gap.

[0008] As a preference, the filter press unit further comprises a synchronous belt adhered to the filter cloth, the synchronous belt being made of a flexible material, a sprocket being fixedly sleeved on the outer side of the roller, and the inner side of the synchronous belt being engaged with the sprocket.

[0009] As a preferred embodiment, the synchronous belt is adhered to both sides of the filter cloth, and the synchronous belt is made of rubber material.

[0010] As a preferred embodiment, an automatic plate and frame machine also includes a rolling component, a slide rail is provided on the frame, the rolling component includes a walking body that can walk along the slide rail and a clamping claw that can clamp the filter plate, the unloading drive component includes a motor frame, a motor and a driving gear, the motor frame is fixedly mounted on the walking body, the motor is mounted on the motor frame, the motor is connected to the driving gear and drives the driving gear to rotate, a driven gear is fixedly sleeved on the roller, the tooth shape of the driven gear matches the driving gear, and when the clamping claw clamps the filter plate, the driving gear and the driven gear engage.

[0011] As a preferred embodiment, a slot is provided on the surface of the filter plate, and the two ends of the slot pass through the filter cloth along the moving direction of the filter cloth on the filter plate surface. A slider is adhered to the filter cloth and is embedded in or leaves the slot as the filter cloth moves. Both the slider and the slot contain magnetic material.

[0012] As a preferred embodiment, the inner wall of the slot is elastically connected with a semicircular buckle, and the outer wall of the slider is provided with a fixing groove matching the buckle. When the slider is embedded in the slot, the buckle pops into the fixing groove.

[0013] As a preference, a water spray hole is opened on the surface of the scraper, the water spray hole faces the outer surface of the filter cloth, and a water flow channel connected to the water spray hole is provided inside the scraper, and the water flow channel is connected to the cleaning device.

[0014] As a preferred embodiment, an automatic plate and frame machine further includes an encoder and a controller, the encoder is mounted on the roller, the controller is electrically connected to the encoder and the motor, and the encoder is used to detect the rotation angle of the roller.

[0015] The above-mentioned method of using an automatic plate and frame machine is as follows: after the sludge is passed into the automatic plate and frame machine and the filtration is completed once, multiple filter plates are separated in sequence. During the movement of the filter plates, the filter cloth rotates around the filter plates driven by the rollers, so that the sludge on the filter cloth is scraped off by the unloading assembly to realize unloading; after multiple unloading, the filter plates are cleaned by a cleaning device.

[0016] In general, the present invention has the following advantages: when the plate and frame machine needs to unload, the rolling component is started, and each plate can be automatically unloaded in turn according to a pre-set program, thereby realizing full automation of the process, reducing labor costs and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of an automatic plate and frame machine.

[0018] Figure 2 This is a front view of an automatic plate and frame machine.

[0019] Figure 3 A side view of an automatic plate and frame machine.

[0020] Figure 4 Schematic diagram of the three-dimensional structure of the filter press unit.

[0021] Figure 5 Schematic diagram of the connection between the filter press unit and the rolling component without the filter cloth.

[0022] Figure 6 for Figure 5 Enlarged view of area A. 1 is the frame, 2 is the filter press unit, 3 is the rolling element, and 4 is the discharge drive. 21 is the filter plate, 22 is the roller, 23 is the slot, 24 is the buckle, 25 is the scraper, and 26 is the filter cloth. 41 is the motor frame, and 42 is the motor. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figures 1 to 6 As shown, an automatic plate and frame machine includes a filter press unit, a discharge drive component and a cleaning device. There are multiple filter press units, and the filter plates of the multiple filter press units are arranged in sequence. A filter press space for squeezing sludge is formed between the filter plates. The filter press unit includes a filter plate, a filter cloth, a roller and a discharge assembly. The filter cloth is wrapped around the outside of the filter plate, and the roller is located on the inside of the filter cloth. The discharge drive component is used to drive the roller to rotate, and the roller drives the filter cloth to rotate around the outside of the filter plate. When the filter cloth rotates around the outside of the filter plate, the sludge on the outer surface of the filter cloth is scraped off by the discharge component, and the cleaning device is used to clean the filter cloth.

[0026] An automatic plate and frame machine also includes a frame, the filter plate is slidably connected to the frame, and the roller is rotatably connected to the top and bottom ends of the filter plate.

[0027] In a filter press unit, there is one filter plate and two groups of discharge assemblies. The discharge assemblies include scrapers. The two groups of scrapers are respectively located on the outside of the rollers at the top and bottom ends of the filter plate. The blades of the scrapers face the rollers. There is a gap between the scrapers and the rollers, and the filter cloth passes through the gap.

[0028] Each set of scrapers includes at least two scrapers, and the scrapers are in strip shape.

[0029] The filter press unit also includes a synchronous belt adhered to the filter cloth. The synchronous belt is made of flexible material. A sprocket is fixedly sleeved on the outer side of the roller, and the inner side of the synchronous belt is engaged with the sprocket.

[0030] The synchronous belt is adhered to both sides of the filter cloth and is made of rubber material.

[0031] An automatic plate and frame machine also includes a rolling component, a slide rail is provided on the frame, the rolling component includes a walking body that can move along the slide rail and a clamping claw that can clamp the filter plate, the unloading drive component includes a motor frame, a motor and a driving gear, the motor frame is fixedly installed on the walking body, the motor is installed on the motor frame, the motor is connected to the driving gear and drives the driving gear to rotate, the roller is fixedly sleeved with a driven gear, the tooth shape of the driven gear matches the driving gear, and when the clamping claw clamps the filter plate, the driving gear and the driven gear engage.

[0032] The rolling component can be made of existing technology. Its clamping jaws consist of two quarter-circular ring-shaped clamping arms connected to the two ends of the walking body via hinges and springs. When pressure is applied to the clamping arms at both ends, they will drop. When no pressure is applied, they will return to their original position under the action of the springs. When the walking body hits the filter plate, the clamping arm at one end is pressed down and then rebounds, thereby clamping the filter plate. At this time, the controller changes the direction. After returning to the specified position, the clamping arm at the other end is pressed down. At this time, the controller changes the direction again. Since the clamping arm at the other end is now pressed down, it turns to move and disengages from the filter plate. Repeating this action, multiple filter plates can be clamped in sequence.

[0033] A walking motor and rollers are installed inside the walking body. The walking motor drives the rollers to roll on the slide rails, thereby driving the rolling components to move along the slide rails.

[0034] A slot is provided on the surface of the filter plate. The two ends of the slot pass through the filter cloth along the moving direction of the filter cloth on the filter plate surface. A slider is adhered to the filter cloth and is embedded in or leaves the slot as the filter cloth moves. Both the slider and the slot contain magnetic material.

[0035] The filter plate is provided with a channel hole for introducing sludge. The opening of the channel hole is located at the bottom of the card slot. The slider and the filter cloth are provided with corresponding through holes, and sludge can be introduced into the filter press space from the channel hole.

[0036] The inner wall of the slot is elastically connected with a semicircular buckle, and the outer wall of the slider is provided with a fixing groove matching the buckle. When the slider is embedded in the slot, the buckle springs into the fixing groove.

[0037] The scraper has water spray holes on its surface, facing the outer surface of the filter cloth. Inside the scraper is a water flow channel connected to the water spray holes, which is connected to a cleaning device. The cleaning device consists of a detachable hose and a high-pressure water pump. The scraper's water flow channel is connected to the hose, and the end of the hose is connected to the high-pressure water pump. When the filter cloth is regularly cleaned, the hose is connected to the water flow channel. When the filter plate is unloaded, the water pump is started to clean the filter cloth. After cleaning, the hose can be removed.

[0038] The top and bottom ends of the filter plate are respectively fixedly connected with mounting parts, which include a base and a fixing ring. The roller is connected to the base through a bearing. The fixing rings are located at both ends of the base. The roller passes through one of the fixing rings. The two ends of the scraper are respectively fixed on the two fixing rings. The fixing ring is provided with a water inlet hole connected to the water flow channel, and the water inlet hole is connected to the cleaning device.

[0039] An automatic plate frame machine also includes an encoder and a controller. The encoder is installed on the roller. The controller is electrically connected to the encoder and the motor. The encoder is used to detect the rotation angle of the roller.

[0040] An automatic plate and frame machine also includes a sensor, which is installed on a rolling component. When the clamping claw clamps the filter plate, the sensor sends a signal to the controller, and the controller controls the motor to work.

[0041] The above-mentioned method of using an automatic plate and frame machine is as follows: after the sludge is passed into the automatic plate and frame machine and the filtration is completed once, multiple filter plates are separated in sequence. During the movement of the filter plates, the filter cloth rotates around the filter plates driven by the rollers, so that the sludge on the filter cloth is scraped off by the unloading assembly to realize unloading; after multiple unloading, the filter plates are cleaned by a cleaning device.

[0042] When the filter cloth rotates around the filter plate, it first rotates a quarter turn clockwise, then a half turn counterclockwise, and then a quarter turn clockwise to reset.

[0043] After multiple unloading operations, the cleaning device is started regularly to spray water through the water nozzles to clean the filter cloth.

[0044] The above embodiments are preferred implementations of the invention, but the implementation of the present invention is not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. An automatic plate and frame machine, characterized in that: It includes a filter press unit, a discharge driving component and a cleaning device. There are multiple filter press units, and the filter plates of the multiple filter press units are arranged in sequence. A filter press space for squeezing sludge is formed between the filter plates. The filter press unit includes a filter plate, a filter cloth, a roller and a discharge assembly. The filter cloth surrounds the outer side of the filter plate, and the roller is located on the inner side of the filter cloth. The discharge driving component is used to drive the roller to rotate, and the roller drives the filter cloth to rotate around the outer side of the filter plate. When the filter cloth rotates around the outer side of the filter plate, the sludge on the outer surface of the filter cloth is scraped off by the discharge component. The cleaning device is used to clean the filter cloth. It also includes a rolling component. The frame is provided with a slide rail. The rolling component includes a walking body that can walk along the slide rail and a clamping claw that can clamp the filter plate. The unloading drive component includes a motor frame, a motor and a driving gear. The motor frame is fixedly installed on the walking body. The motor is installed on the motor frame. The motor is connected to the driving gear and drives the driving gear to rotate. A driven gear is fixedly sleeved on the roller. The tooth shape of the driven gear matches the driving gear. When the clamping claw clamps the filter plate, the driving gear is meshed with the driven gear.

2. An automatic plate frame machine according to claim 1, characterized in that: The utility model also comprises a frame, the filter plate is slidably connected with the frame, and the roller is rotatably connected with the top end and the bottom end of the filter plate.

3. An automatic plate frame machine according to claim 2, characterized in that: In one filter press unit, there is one filter plate and two groups of discharge assemblies. The discharge assemblies include scrapers. The two groups of scrapers are respectively located on the outside of the rollers at the top and bottom ends of the filter plate. The blades of the scrapers face the rollers. There is a gap between the scrapers and the rollers, and the filter cloth passes through the gap.

4. An automatic plate frame machine according to claim 1, characterized in that: The filter press unit also includes a synchronous belt adhered to the filter cloth, the synchronous belt is made of a flexible material, a sprocket is fixedly sleeved on the outer side of the roller, and the inner side of the synchronous belt is meshed with the sprocket.

5. An automatic plate frame machine according to claim 1, characterized in that: A slot is provided on the surface of the filter plate. Both ends of the slot penetrate along the moving direction of the filter cloth on the filter plate surface. A slider is adhered to the filter cloth and is embedded in or leaves the slot as the filter cloth moves. Both the slider and the slot contain magnetic material.

6. An automatic plate frame machine according to claim 5, characterized in that: The inner wall of the slot is elastically connected with a semicircular buckle, and the outer wall of the slider is provided with a fixing groove matching with the buckle. When the slider is embedded in the slot, the buckle pops into the fixing groove.

7. An automatic plate frame machine according to claim 2, characterized in that: The scraper is provided with water spray holes on its surface, the water spray holes face the outer surface of the filter cloth, the scraper is provided with a water flow channel connected with the water spray holes, and the water flow channel is connected with the cleaning device.

8. An automatic plate and frame machine according to claim 1, characterized in that: The utility model also comprises an encoder and a controller. The encoder is installed on the roller. The controller is electrically connected to the encoder and the motor. The encoder is used to detect the rotation angle of the roller.

9. The method for using the automatic plate and frame machine according to any one of claims 1 to 8, characterized in that: After the sludge is passed through the automatic plate and frame machine and filtered once, multiple filter plates are separated one by one. During the movement of the filter plates, the filter cloth rotates around the filter plates driven by the rollers, so that the sludge on the filter cloth is scraped off by the unloading assembly to achieve unloading; After multiple unloading, the filter plate is cleaned by a cleaning device.

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