A filter press device

Abstract

A filter press device includes an upper filter press assembly and a lower filter press assembly, both of which include a filter screen, an extrusion belt, a transmission wheel and a plurality of rollers; the filter screen surrounds the outer side of the plurality of rollers, the extrusion belt surrounds the outer side of the transmission wheel, and the extrusion belt is located in the area surrounded by the filter screen; the upper filter press assembly and the lower filter press assembly are installed in cooperation, so that a filter press area is formed between the filter screen of the upper filter press assembly and the filter screen of the lower filter press assembly; the extrusion belt includes a belt and a toothed belt, the outer side of the belt faces the inner side of the filter screen, the inner side of the belt fits the outer side of the toothed belt, and the inner side of the toothed belt is a concave-convex structure. The invention has a light structure, low material cost, and long service life, and belongs to the field of sludge dewatering.

Description

Technical Field

[0001] The invention relates to the field of sludge dehydration, and in particular to a filter press device. Background Art

[0002] Nowadays, the environmental problems brought about by the rapid development of industrialization are very serious. Among them, the treatment of sludge wastewater has become a key and difficult point that must be solved in environmental problems. At present, it is usually necessary to use a sludge dewatering machine to dehydrate the sludge wastewater. Commonly used sludge dewatering machines include plate and frame machines, belt machines, screw stacking machines, etc. The working method of the belt dewatering machine can achieve continuous production. The working principle of the ordinary belt dewatering machine is to use a motor to provide power to transmission parts such as gears and rollers, drive the transmission mechanism to drive, and send the material to the filter pressing area through the filter screen for filter pressing and dehydration, thereby achieving the dehydration effect, but the dehydration effect of the general belt dewatering machine is not ideal. The filter pressing mechanism of a belt dewatering machine used for deep dehydration with the publication number CN110550842A has a good dehydration effect. It has the effect of reducing the load-bearing of the rotating shaft and the sprocket, and can reduce the consumption of the power source and improve the stability of the filter pressing crawler when applied to the filter pressing.

[0003] However, the mechanism still has some imperfections, such as the complex components of its track transmission mechanism, uneven force distribution, heavy ribs, difficulty in maintenance after wear, and high cost. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the object of the present invention is to provide a relatively light filter press device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a filter press device, including an upper filter press assembly and a lower filter press assembly, both of which include a filter screen, an extrusion belt, a transmission wheel and a plurality of rollers; the filter screen is surrounded by the outer side of the plurality of rollers, the extrusion belt is surrounded by the outer side of the transmission wheel, and the extrusion belt is located in the area surrounded by the filter screen; the extrusion belt includes a belt and a toothed belt, the outer side of the belt faces the inner side of the filter screen, the inner side of the belt fits the outer side of the toothed belt, and the inner side of the toothed belt is a concave-convex structure; the upper filter press assembly and the lower filter press assembly are installed in cooperation, so that a filter press area is formed between the filter screen of the upper filter press assembly and the filter screen of the lower filter press assembly. After adopting this structure, the lower filter press assembly is located below the upper filter press assembly, and when working, the material passes through the filter press area, and the outer side of the extrusion belt presses against the inner side of the filter screen in the direction close to the filter press area, so that the material in the filter press area is squeezed, and the combination of the toothed belt and the belt is used to replace the rib plate structure in the existing dehydrator, which can reduce its weight to a large extent on the one hand, and can also effectively reduce the material cost on the other hand.

[0006] As a preferred embodiment, the transmission wheel is a gear, and the inner side of the toothed belt meshes with the gear. With this structure, the transmission is reliable, and has high flexibility and applicability. When the gear is rotated by the power provided by the motor, the toothed belt and the belt are driven to rotate together, and the filter press area is squeezed, thereby achieving continuous dehydration.

[0007] As a preferred embodiment, the toothed belt is composed of a plurality of tooth block units arranged in sequence, and the outer side of the tooth block unit is a flat structure and adhered to the inner surface of the belt. With this structure, the tooth block unit is subjected to uniform and stable force.

[0008] As a preferred embodiment, a tooth groove is formed on the inner side of the tooth block unit, and the cross section of the tooth groove is trapezoidal. After adopting this structure, a plurality of tooth block units form a tooth belt, so that the inner side of the tooth belt is concave-convex.

[0009] As a preferred embodiment, there are multiple extrusion belts, which are arranged side by side around the outer side of the driving wheel. An upper drainage gap is provided between adjacent extrusion belts in the upper filter press assembly, and a lower drainage gap is provided between adjacent extrusion belts in the lower filter press assembly. With this structure, water in the material flows through the filter screen during filtration and then flows away through the upper drainage gap and the lower drainage gap. The width of the toothed belt can be processed into different sizes according to actual production needs, and the upper drainage gap and the lower drainage gap can also be adjusted as needed.

[0010] As a preferred embodiment, the transmission wheel includes a driving gear and a driven gear, the extrusion belt surrounds the driving gear and the driven gear, the space surrounded by the extrusion belt consists of a rectangular space in the middle and semicircular spaces at both ends, the driving gear and the driven gear are respectively embedded in the semicircular spaces at both ends and respectively cooperate with the extrusion belt for transmission. After adopting this structure, the extrusion belt surrounds a racetrack shape, and the driving gear and the driven gear are respectively located at both ends for transmission.

[0011] As a preferred embodiment, a filter press device further includes a frame and a motor, wherein the motor is mounted on the frame, and an output shaft of the motor is connected to a driving gear and drives the driving gear to rotate.

[0012] As a preferred embodiment, a filter press device further comprises an upper support plate and a lower support plate, wherein the upper support plate is located inside the extrusion belt of the upper filter press assembly, and the lower support plate is located inside the extrusion belt of the lower filter press assembly, and the upper support plate and the lower support plate are connected via an interlocking mechanism. After adopting this structure, the upper support plate and the lower support plate are stress-bearing parts that bear the filter press pressure, and the size of the plate surface can be designed according to the size of the filter press area.

[0013] As a preferred embodiment, the interlocking mechanism includes an upper connecting block, a lower connecting block, a pull rod, an upper fastener, and a lower fastener. The upper connecting block is fixedly connected to the upper support plate, and the lower connecting block is fixedly connected to the lower support plate. Through holes are provided on the upper connecting block and the lower connecting block, and the pull rod passes through the upper connecting block and the lower connecting block through the through holes; the upper fastener is sleeved on the pull rod and threadedly connected to the pull rod, and the upper fastener is away from the lower connecting block relative to the upper connecting block, the lower fastener is sleeved on the pull rod and threadedly connected to the pull rod, and the lower fastener is away from the upper connecting block relative to the lower connecting block.

[0014] As a preferred embodiment, the width of the extrusion belt is 10mm-30mm, the width of the upper drainage gap is 2mm-4mm, and the width of the lower drainage gap is 2mm-4mm. With this structure, the water generated during the filter pressing process can be effectively discharged to prevent water accumulation and cause failure.

[0015] The number of rollers is determined according to the actual design structure. As a transmission element, it supports the filter screen and cooperates with the filter screen transmission. The specifications of the motor are selected according to the force during operation, and are used to provide power to the gears, which then drive the entire filter press device. Gears are selected in different specifications according to actual conditions and are combined with toothed belts for transmission.

[0016] The contact surface between the toothed belt and the belt is processed into a smooth plane, that is, the outer side of the toothed belt and the inner side of the belt are processed into smooth planes, so that the force on the toothed belt is evenly distributed on the surface, which is not easily damaged during operation and can greatly increase its service life.

[0017] The upper support plate and the lower support plate are used as supporting parts for the extrusion belt to bear force. Their surfaces are processed to be smooth to reduce the friction generated when they contact with the toothed belt and increase their service life. The upper support plate and the lower support plate are locked using an interlocking mechanism. The interlocking mechanism can be flexibly adjusted according to the thickness of the filter press area, which is convenient and safe.

[0018] In general, the present invention has the following advantages: small overall weight, low material cost, continuous production, high efficiency, not easy to wear, easy to maintain and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a filter press device.

[0020] Figure 2 It is a three-dimensional diagram of the connection between the lower filter press assembly, the lower support plate and the self-locking mechanism.

[0021] Figure 3 for Figure 2 Magnified view of area A.

[0022] Figure 4 It is the front view of the gear unit.

[0023] Among them, 1 is an upper filter press assembly, 2 is a lower filter press assembly, 3 is a filter screen, 4 is a belt, 5 is a toothed belt, 6 is a transmission wheel, 7 is an upper support plate, 8 is an upper connecting block, 9 is an upper fastener, 10 is a pull rod, 11 is a lower support plate, 12 is a lower connecting block, and 13 is a lower fastener. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with specific implementation methods.

[0025] Embodiment 1

[0026] A filter press device comprises an upper filter press assembly 1 and a lower filter press assembly 2, both of which comprise a filter screen 3, an extrusion belt, a transmission wheel 6 and a plurality of rollers; the filter screen is wrapped around the outside of the plurality of rollers, the extrusion belt is wrapped around the outside of the transmission wheel, and the extrusion belt is located in the area surrounded by the filter screen; the upper filter press assembly is installed in cooperation with the lower filter press assembly, so that a filter press area is formed between the filter screen of the upper filter press assembly and the filter screen of the lower filter press assembly; the extrusion belt comprises a belt 4 and a toothed belt 5, the outer side of the belt faces the inner side of the filter screen, the inner side of the belt fits with the outer side of the toothed belt, and the inner side of the toothed belt is a concave-convex structure.

[0027] The transmission wheel is a gear, and the inner side of the toothed belt meshes with the gear.

[0028] The toothed belt is composed of a plurality of tooth block units arranged in sequence, the outer side of the tooth block unit is a flat structure and is bonded to the inner surface of the belt.

[0029] The inner side of the tooth block unit is provided with a tooth groove, and the cross section of the tooth groove is trapezoidal.

[0030] There are multiple extrusion belts, which are arranged side by side around the outer side of the driving wheel. Upper drainage gaps are arranged between adjacent extrusion belts in the upper filter press assembly, and lower drainage gaps are arranged between adjacent extrusion belts in the lower filter press assembly.

[0031] The transmission wheel includes a driving gear and a driven gear. The extrusion belt surrounds the driving gear and the driven gear. The space enclosed by the extrusion belt consists of a rectangular space in the middle and semicircular spaces at both ends. The driving gear and the driven gear are respectively embedded in the semicircular spaces at both ends and cooperate with the extrusion belt for transmission.

[0032] A filter press device also includes a frame and a motor. The motor is mounted on the frame, and the output shaft of the motor is connected to a driving gear to drive the driving gear to rotate.

[0033] A filter press device also includes an upper support plate 7 and a lower support plate 11, the upper support plate is located on the inner side of the extrusion belt of the upper filter press assembly, and the lower support plate is located on the inner side of the extrusion belt of the lower filter press assembly, and the upper support plate and the lower support plate are connected by an interlocking mechanism.

[0034] The interlocking mechanism includes an upper connecting block 8, a lower connecting block 12, a pull rod 10, an upper fastener 9, and a lower fastener 13. The upper connecting block is fixedly connected to the upper support plate, and the lower connecting block is fixedly connected to the lower support plate. Through holes are provided on the upper connecting block and the lower connecting block, and the pull rod passes through the upper connecting block and the lower connecting block through the through holes; the upper fastener is sleeved on the pull rod and threadedly connected to the pull rod, and the upper fastener is away from the lower connecting block relative to the upper connecting block, the lower fastener is sleeved on the pull rod and threadedly connected to the pull rod, and the lower fastener is away from the upper connecting block relative to the lower connecting block.

[0035] The width of the extruded belt is 10mm-30mm, the width of the upper drainage gap is 2mm-4mm, and the width of the lower drainage gap is 2mm-4mm.

[0036] When the filter press device is working, the material is first transferred to the filter screen, the filter screen is driven by the rotation of the roller, and then the material is transferred to the filter press area for dehydration.

[0037] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are 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 equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A filter press device, characterized in that: It includes an upper filter press assembly and a lower filter press assembly, each of which includes a filter screen, an extrusion belt, a transmission wheel and a plurality of rollers; The filter screen is wrapped around the outside of multiple rollers, the extrusion belt is wrapped around the outside of the transmission wheel, and the extrusion belt is located in the area surrounded by the filter screen; the extrusion belt includes a belt and a toothed belt, the outer side of the belt faces the inner side of the filter screen, the inner side of the belt fits the outer side of the toothed belt, and the inner side of the toothed belt is a concave-convex structure; The upper filter press assembly is installed in cooperation with the lower filter press assembly, so that a filter press area is formed between the filter screen of the upper filter press assembly and the filter screen of the lower filter press assembly; There are multiple extrusion belts, which are arranged side by side around the outer side of the transmission wheel. An upper drainage gap is provided between adjacent extrusion belts in the upper filter press assembly, and a lower drainage gap is provided between adjacent extrusion belts in the lower filter press assembly. The toothed belt is composed of a plurality of tooth block units arranged in sequence, the outer side of the tooth block unit is a flat structure and is bonded to the inner surface of the belt.

2. A filter press device according to claim 1, characterized in that: The transmission wheel is a gear, and the inner side of the toothed belt meshes with the gear.

3. A filter press device according to claim 1, characterized in that: The inner side of the tooth block unit is provided with a tooth groove, and the cross section of the tooth groove is trapezoidal.

4. A filter press device according to claim 2, characterized in that: The transmission wheel includes a driving gear and a driven gear. The extrusion belt surrounds the driving gear and the driven gear. The space enclosed by the extrusion belt consists of a rectangular space in the middle and semicircular spaces at both ends. The driving gear and the driven gear are respectively embedded in the semicircular spaces at both ends and cooperate with the extrusion belt for transmission.

5. A filter press device according to claim 4, characterized in that: The machine also includes a frame and a motor. The motor is mounted on the frame. The output shaft of the motor is connected to the driving gear and drives the driving gear to rotate.

6. A filter press device according to claim 1, characterized in that: It also includes an upper support plate and a lower support plate. The upper support plate is located on the inner side of the extrusion belt of the upper filter press assembly, and the lower support plate is located on the inner side of the extrusion belt of the lower filter press assembly. The upper support plate and the lower support plate are connected by an interlocking mechanism.

7. A filter press device according to claim 6, characterized in that: The interlocking mechanism includes an upper connecting block, a lower connecting block, a pull rod, an upper fastener, and a lower fastener. The upper connecting block is fixedly connected to the upper support plate, and the lower connecting block is fixedly connected to the lower support plate. Through holes are opened on the upper connecting block and the lower connecting block, and the pull rod passes through the upper connecting block and the lower connecting block through the through holes. The upper fastener is sleeved on the pull rod and threadedly connected to the pull rod, and the upper fastener is away from the lower connecting block relative to the upper connecting block. The lower fastener is sleeved on the pull rod and threadedly connected to the pull rod, and the lower fastener is away from the upper connecting block relative to the lower connecting block.

8. A filter press device according to claim 1, characterized in that: The width of the extruded belt is 10mm-30mm, the width of the upper drainage gap is 2mm-4mm, and the width of the lower drainage gap is 2mm-4mm.

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