Plate-and-frame filter press

Abstract

The utility model discloses a plate-and-frame filter press, relates to the technical field of filter presses, and mainly aims to blow off residual filter cakes on the surface of a filter plate. According to the main technical scheme, the plate-and-frame filter press comprises a plurality of filter plates which are sequentially arranged in the extending direction of a guide rail, a second filter plate is provided with a vertical sliding groove, flexible gas ejector pipes are arranged on the opposite sides of the vertical sliding groove respectively, and outlets of the gas ejector pipes are located on the edge of the side face of the second filter plate; the pressing plate is fixedly connected to the filter plate at the end of the guide rail; the first hinge shaft is fixedly connected to the first filter plate, the second hinge shaft and the fourth hinge shaft are slidably arranged at the opposite ends of the vertical sliding groove respectively, and the third hinge shaft is fixedly connected to the third filter plate; the air control mechanism comprises a pivot, a first clamping body and a second clamping body, the pivot is fixedly arranged between the vertical sliding groove and the air spraying pipe, the first clamping body is hinged to the second clamping body through the pivot, the pivot is provided with a torsional spring, and the rear end of the first clamping body and the rear end of the second clamping body are both located within the range of the vertical sliding groove.

Description

Technical Field

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

[0002] The filter press is a filtering device used to separate insoluble matter from liquid. When the plate and frame filter press is used for slag discharge, the overlapping filter plates need to be pulled apart to remove the filter residue on the filter cloth.

[0003] The Chinese patent CN205730503U discloses a plate and frame filter press, including a frame, on which guide rails are arranged side by side, and a plurality of filter plates are slidably arranged on the guide rails, both sides of the filter plates are covered with filter cloths, and a filter chamber for filtering liquid is formed between the filter cloths that fit together, and a pressing plate for pressing the filter plate and a power device for driving the pressing plate to slide are also provided at one end of the guide rail, the filter plate fitted on the pressing plate is fixed to the pressing plate, and a connecting component that can transmit tension but not pressure is connected between the filter plates.

[0004] Although the plate and frame filter press can automatically pull apart the multiple filter plates in sequence, the filter cakes on the surfaces of the filter plates cannot be completely removed during the process of pulling apart the multiple filter plates in sequence, and a small amount of residual filter cakes are inevitably present on the surfaces of the filter plates. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a plate and frame filter press, the main purpose of which is to blow off the residual filter cake on the surface of the filter plate while automatically pulling apart a plurality of filter plates.

[0006] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0007] The embodiment of the utility model provides a plate-frame filter press, which comprises: a frame, a plurality of filter plates, a driving mechanism and a plurality of parallelogram connecting rod mechanisms;

[0008] The rack is provided with parallel guide rails;

[0009] The plurality of filter plates are arranged in sequence along the extension direction of the guide rail, and the three adjacent filter plates are respectively the first filter plate, the second filter plate and the third filter plate, wherein the second filter plate is provided with a vertical slide groove, and flexible air injection pipes are respectively provided on opposite sides of the vertical slide groove, and the outlet of the air injection pipe is located at the side edge of the second filter plate;

[0010] The output end of the driving mechanism is connected to a pressing plate, and the pressing plate is fixedly connected to the filter plate at the end of the guide rail;

[0011] Each of the parallelogram linkage mechanisms comprises four connecting rods which are hingedly connected at the head and tail in sequence through a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft, wherein the first hinge shaft is fixedly connected to the first filter plate, the second hinge shaft and the fourth hinge shaft are slidably disposed at opposite ends of the vertical slide groove, respectively, and the third hinge shaft is fixedly connected to the third filter plate;

[0012] The air control mechanism includes a pivot, a first clamp and a second clamp, the pivot is fixedly arranged between the vertical slide groove and the air injection pipe, the first clamp is hinged to the second clamp via the pivot, the pivot is provided with a torsion spring for driving the front end of the first clamp and the front end of the second clamp to clamp the air injection pipe, the rear end of the first clamp and the rear end of the second clamp are both located within the range of the vertical slide groove, and are used to enable the second hinge axis and the fourth hinge axis to drive the rear end of the first clamp and the rear end of the second clamp to approach each other, thereby making the front end of the first clamp and the front end of the second clamp move away from each other.

[0013] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0014] Optionally, it also includes a push mechanism, which includes a first slider and a second slider, the first slider and the second slider are respectively slidably connected to the vertical slide groove, the first slider is connected to the second hinge shaft through a first spring, and the second slider is connected to the fourth hinge shaft through a second spring, and the rear end of the first clamp body and the rear end of the second clamp body are both located between the first slider and the second slider.

[0015] Optionally, relative side walls in the vertical slide groove are provided with limiting grooves, the width of the limiting grooves is greater than the width of the vertical slide groove, the first sliding block and the second sliding block are respectively fixedly connected to limiting blocks, and the limiting blocks are correspondingly slidably connected to the limiting grooves.

[0016] Optionally, it also includes a third slider and a fourth slider, the third slider is coaxially connected to the second hinge shaft, the fourth slider is coaxially connected to the fourth hinge shaft, the third slider and the fourth slider are respectively slidably connected to the vertical slide groove, the third slider is connected to the first slider through the first spring, and the fourth slider is connected to the second slider through the second spring.

[0017] Optionally, a pin shaft is further included, and the free end sides of the first hinge shaft, the second hinge shaft, the third hinge shaft and the fourth hinge shaft are respectively provided with a pin hole, and the pin shaft is inserted into the pin hole.

[0018] Optionally, the first clamp and the second clamp are respectively in an obtuse angle shape, and the obtuse angle vertex of the first clamp and the obtuse angle vertex of the second clamp are hinged to each other through the pivot.

[0019] By means of the above technical solution, the utility model has at least the following advantages:

[0020] When the plate and frame filter press filters slurry, multiple filter plates are pressed together in sequence, the second hinge axis and the fourth hinge axis are located at the far ends of each other, and under the action of the torsion spring, the front end of the first clamp and the front end of the second clamp clamp the jet pipe, so that the radial cross-section of the flexible jet pipe is squeezed and flattened, blocking the compressed air in the jet pipe from spraying out of the side of the second filter plate.

[0021] When the output shaft of the driving mechanism drives the pressure plate to slide along the guide rail, the pressure plate drives the filter plate to slide along the guide rail, multiple filter plates are sequentially pulled apart through the parallelogram linkage mechanism, the distance between adjacent filter plates gradually increases, and most of the filter cakes fall downward.

[0022] At the same time, the parallelogram formed by the parallelogram linkage mechanism becomes flat, and the second hinge axis and the fourth hinge axis approach each other along the vertical slide groove, forcing the rear end of the first clamp and the rear end of the second clamp to approach each other, and the front end of the first clamp and the front end of the second clamp to move away from each other, and the radial cross-section of the jet pipe is unobstructed again, and compressed air is sprayed out of the opposite side of the second filter plate to make the compressed air flow impact the filter cloth surface of the first filter plate and the filter cloth surface of the second filter plate. The compressed air flow impacts the residual filter cake on the surface of the filter cloth, thereby separating the residual filter cake from the filter cloth.

[0023] In the above process, the distance between multiple filter plates is pulled apart, and the jet pipe will spray compressed air only after most of the filter cakes fall downward; when multiple filter plates are pressed tightly together, the jet pipe is squeezed by the first clamp and the second clamp, and the compressed air cannot be sprayed out.

[0024] Therefore, through the deformation of the parallelogram linkage mechanism, it is possible to not only automatically pull apart the multiple filter plates, but also to blow away the residual filter cakes on the surface of the filter plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A structural schematic diagram of a plate and frame filter press provided by an embodiment of the utility model;

[0026] Figure 2 for Figure 1 The view from the AA point in the middle;

[0027] Figure 3 for Figure 1 A magnified view of part B;

[0028] Figure 4 It is a stereoscopic view of the second hinge axis or the fourth hinge axis.

[0029] The figure marks in the drawings of the specification include: frame 1, guide rail 2, first filter plate 3, second filter plate 4, third filter plate 5, vertical slide groove 6, jet pipe 7, pressure plate 8, first hinge axis 9, second hinge axis 10, third hinge axis 11, fourth hinge axis 12, connecting rod 13, pivot 14, first clamp body 15, second clamp body 16, torsion spring 17, first slider 18, second slider 19, first spring 20, second spring 21, limit groove 22, limit block 23, third slider 24, fourth slider 25, pin 26, pin hole 27. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the utility model provides a plate-frame filter press, which comprises: a frame 1, a plurality of filter plates, a driving mechanism and a plurality of parallelogram connecting rods 13;

[0033] The frame 1 is provided with parallel guide rails 2;

[0034] The plurality of filter plates are arranged in sequence along the extension direction of the guide rail 2, and the three adjacent filter plates are respectively a first filter plate 3, a second filter plate 4 and a third filter plate 5, wherein the second filter plate 4 is provided with a vertical slide groove 6, and flexible air injection pipes 7 are respectively provided on opposite sides of the vertical slide groove 6, and the outlet of the air injection pipe 7 is located at the side edge of the second filter plate 4;

[0035] The output end of the driving mechanism is connected to a pressing plate 8, and the pressing plate 8 is fixedly connected to the filter plate at the end of the guide rail 2;

[0036] Each of the parallelogram connecting rods 13 includes four connecting rods 13 which are hingedly connected head to tail in sequence through a first hinge shaft 9, a second hinge shaft 10, a third hinge shaft 11 and a fourth hinge shaft 12, wherein the first hinge shaft 9 is fixedly connected to the first filter plate 3, the second hinge shaft 10 and the fourth hinge shaft 12 are slidably disposed at opposite ends of the vertical slide groove 6, respectively, and the third hinge shaft 11 is fixedly connected to the third filter plate 5;

[0037] The air control mechanism includes a pivot 14, a first clamp 15 and a second clamp 16. The pivot 14 is fixedly arranged between the vertical slide groove 6 and the air injection pipe 7. The first clamp 15 is hinged to the second clamp 16 through the pivot 14. The pivot 14 is provided with a torsion spring 17, which is used to drive the front end of the first clamp 15 and the front end of the second clamp 16 to clamp the air injection pipe 7. The rear end of the first clamp 15 and the rear end of the second clamp 16 are both located within the range of the vertical slide groove 6, which is used to make the second hinge shaft 10 and the fourth hinge shaft 12 drive the rear end of the first clamp 15 and the rear end of the second clamp 16 to approach each other, so that the front end of the first clamp 15 and the front end of the second clamp 16 are away from each other.

[0038] The working process of the plate and frame filter press is as follows:

[0039] When the plate and frame filter press filters slurry, multiple filter plates are pressed together in sequence, the second hinge shaft 10 and the fourth hinge shaft 12 are located at the far ends of each other, and under the action of the torsion spring 17, the front end of the first clamp 15 and the front end of the second clamp 16 clamp the jet pipe 7, so that the radial cross-section of the flexible jet pipe 7 is squeezed and flattened, blocking the compressed air in the jet pipe 7 from spraying out of the side of the second filter plate 4.

[0040] When the output shaft of the driving mechanism drives the pressing plate 8 to slide along the guide rail 2, the pressing plate 8 drives the filter plate to slide along the guide rail 2, and the multiple filter plates are sequentially pulled apart by the parallelogram connecting rod 13 mechanism, the distance between adjacent filter plates gradually increases, and most of the filter cakes fall downward.

[0041] At the same time, the parallelogram formed by the parallelogram connecting rod 13 mechanism becomes flat, and the second hinge axis 10 and the fourth hinge axis 12 approach each other along the vertical slide groove 6, forcing the rear end of the first clamp 15 and the rear end of the second clamp 16 to approach each other, and the front end of the first clamp 15 and the front end of the second clamp 16 move away from each other, and the radial cross-section of the jet pipe 7 is unobstructed again, and compressed air is sprayed out of the opposite side of the second filter plate 4, so that the compressed air flow impacts the filter cloth surface of the first filter plate 3 and the filter cloth surface of the second filter plate 4. The compressed air flow impacts the residual filter cake on the surface of the filter cloth, thereby separating the residual filter cake from the filter cloth.

[0042] In the above process, the distance between multiple filter plates is pulled apart, and the jet pipe 7 will not spray compressed air until most of the filter cakes fall downward; when multiple filter plates are pressed tightly together, the jet pipe 7 is squeezed flat by the first clamp 15 and the second clamp 16, and the compressed air cannot be sprayed out.

[0043] In the technical solution of the utility model, through the deformation of the parallelogram connecting rod 13 mechanism, it is possible to realize the automatic opening of multiple filter plates and the blowing off of residual filter cakes on the surface of the filter plates.

[0044] Specifically, the solid parts of the second filter plate 4 on the radially opposite sides of the vertical slide groove 6 are respectively provided with oblique air flow channels, and the air injection pipe 7 penetrates the air flow channel so that the outlet of the air injection pipe 7 extends to the side edge of the second filter plate 4.

[0045] Specifically, the torsion spring 17 is sleeved on the pivot 14, and the two ends of the spring wire of the torsion spring 17 are respectively overlapped on the outer side of the front end of the first clamp 15 and the outer side of the front end of the second clamp 16, so as to make the front end of the first clamp 15 and the front end of the second clamp 16 approach each other and clamp the injection pipe 7.

[0046] Specifically, the driving mechanism adopts a hydraulic cylinder, and the piston rod of the hydraulic cylinder is connected to the pressing plate 8.

[0047] Specifically, the end of the pivot 14 is fixedly connected to the physical part of the second filter plate 4 between the vertical slide groove 6 and the air injection pipe 7 .

[0048] like Figure 3 As shown, in a specific embodiment, it also includes a push mechanism, which includes a first slider 18 and a second slider 19, and the first slider and the second slider 19 are respectively slidably connected to the vertical slide groove 6, the first slider 18 is connected to the second hinge shaft 10 through a first spring 20, and the second slider 19 is connected to the fourth hinge shaft 12 through a second spring 21, and the rear end of the first clamp body 15 and the rear end of the second clamp body 16 are both located between the first slider 18 and the second slider 19.

[0049] In this embodiment, specifically, when the second hinge axis 10 and the fourth hinge axis 12 of the parallelogram linkage 13 mechanism approach each other, the first slider 18 and the second slider 19 are driven to approach each other, thereby pushing the rear end of the first clamp body 15 and the rear end of the second clamp body 16 to approach each other, and the front end of the first clamp body 15 and the front end of the second clamp body 16 to move away from each other.

[0050] In the above process, the first spring 20 and the second spring 21 are compressed, which buffers the impact force of the first slider 18 and the second slider 19 on the rear end of the clamping body, thereby extending the service life of the first clamping body 15 and the second clamping body 16.

[0051] like Figure 2 As shown, in a specific embodiment, a limiting groove 22 is provided on the relative side walls in the vertical slide groove 6, the width of the limiting groove 22 is greater than the width of the vertical slide groove 6, the first slider 18 and the second slider 19 are respectively fixedly connected to the limiting blocks 23, and the limiting blocks 23 are correspondingly slidably connected to the limiting groove 22.

[0052] In this embodiment, specifically, the limit groove 22 and the vertical slide groove 6 extend in the same direction, and the opposite sides of the first slider 18 and the opposite sides of the second slider 19 are respectively fixedly connected to the limit blocks 23, and the limit blocks 23 prevent the first slider 18 and the second slider 19 from detaching from the vertical slide groove 6.

[0053] like Figure 2 and Figure 4 As shown, in a specific embodiment, it also includes a third slider 24 and a fourth slider 25, the third slider 24 is coaxially connected to the second hinge shaft 10, the fourth slider 25 is coaxially connected to the fourth hinge shaft 12, the third slider 24 and the fourth slider 25 are respectively slidably connected to the vertical slide groove 6, the third slider 24 is connected to the first slider 18 through the first spring 20, and the fourth slider 25 is connected to the second slider 19 through the second spring 21.

[0054] In this embodiment, specifically, the radial width of the third slider 24 and the radial width of the fourth slider 25 respectively match the width of the vertical slide groove 6. When the third slider 24 and the fourth slider 25 move axially along the vertical slide groove 6, the second hinge shaft 10 and the fourth hinge shaft 12 will not rotate, thereby improving the stability of the movement of the parallelogram connecting rod 13 mechanism.

[0055] like Figure 2 and Figure 4 In a specific embodiment, a pin shaft 26 is further included. The free ends of the first hinge shaft 9 , the second hinge shaft 10 , the third hinge shaft 11 and the fourth hinge shaft 12 are respectively provided with pin holes 27 , and the pin shaft 26 is inserted into the pin hole 27 .

[0056] In this embodiment, specifically, when the filter plate needs to be replaced, the operator can pull out the pin 26 on the free end side of the hinge shaft of the filter plate to be replaced, and remove the jet pipe 7, so as to facilitate the removal of the connecting rod 13 of the parallelogram connecting rod 13 mechanism, so as to make the filter plate to be replaced independent and facilitate the replacement of the filter plate.

[0057] like Figure 3 As shown, in a specific embodiment, the first clamp body 15 and the second clamp body 16 are respectively in an obtuse angle shape, and the obtuse angle vertex of the first clamp body 15 and the obtuse angle vertex of the second clamp body 16 are hinged to each other through the pivot 14.

[0058] In this embodiment, specifically, the obtuse angle of the first clamp 15 and the obtuse angle of the second clamp 16 are opposite to each other. Under the action of the torsion spring 17, when the front end of the first clamp 15 and the front end of the second clamp 16 are close to each other to clamp the air injection tube 7, the rear end of the first clamp 15 and the rear end of the second clamp 16 are away from each other;

[0059] When the second hinge shaft 10 and the fourth hinge shaft 12 approach each other axially along the vertical slide groove 6, forcing the rear end of the first clamp body 15 and the rear end of the second clamp body 16 to approach each other, the front end of the first clamp body 15 and the front end of the second clamp body 16 move away from each other, releasing the air injection pipe 7.

[0060] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A plate and frame filter press, characterized in that: include: A rack, wherein the rack is provided with side-by-side guide rails; A plurality of filter plates, wherein the plurality of filter plates are sequentially arranged along the extension direction of the guide rail, wherein three adjacent filter plates are respectively a first filter plate, a second filter plate and a third filter plate, wherein the second filter plate is provided with a vertical slide groove, and flexible air injection pipes are respectively provided on opposite sides of the vertical slide groove, and outlets of the air injection pipes are located at the side edges of the second filter plate; A driving mechanism, wherein an output end of the driving mechanism is connected to a pressing plate, and the pressing plate is fixedly connected to the filter plate at the end of the guide rail; A plurality of parallelogram linkage mechanisms, each of which comprises four linkages which are hingedly connected head to tail in sequence through a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft, the first hinge shaft is fixedly connected to the first filter plate, the second hinge shaft and the fourth hinge shaft are slidably disposed at opposite ends of the vertical slide groove, respectively, and the third hinge shaft is fixedly connected to the third filter plate; An air control mechanism comprises a pivot, a first clamp and a second clamp, the pivot being fixedly arranged between the vertical slide groove and the air injection pipe, the first clamp being hinged to the second clamp via the pivot, the pivot being provided with a torsion spring for driving the front end of the first clamp and the front end of the second clamp to clamp the air injection pipe, the rear end of the first clamp and the rear end of the second clamp are both located within the range of the vertical slide groove, and are used to enable the second hinge shaft and the fourth hinge shaft to drive the rear end of the first clamp and the rear end of the second clamp to approach each other, thereby making the front end of the first clamp and the front end of the second clamp move away from each other.

2. The plate and frame filter press according to claim 1, characterized in that: It also includes a push mechanism, which includes a first slider and a second slider, the first slider and the second slider are respectively slidably connected to the vertical slide groove, the first slider is connected to the second hinge shaft through a first spring, and the second slider is connected to the fourth hinge shaft through a second spring, and the rear end of the first clamp body and the rear end of the second clamp body are both located between the first slider and the second slider.

3. The plate and frame filter press according to claim 2, characterized in that: The vertical slide groove has opposite side walls provided with limiting grooves, the width of which is greater than the width of the vertical slide groove, the first sliding block and the second sliding block are respectively fixedly connected to limiting blocks, and the limiting blocks are correspondingly slidably connected to the limiting grooves.

4. The plate and frame filter press according to claim 2, characterized in that: It also includes a third slider and a fourth slider, the third slider is coaxially connected to the second hinge shaft, the fourth slider is coaxially connected to the fourth hinge shaft, the third slider and the fourth slider are respectively slidably connected to the vertical slide groove, the third slider is connected to the first slider through the first spring, and the fourth slider is connected to the second slider through the second spring.

5. The plate and frame filter press according to any one of claims 1 to 4, characterized in that: It also includes a pin shaft, and the free end sides of the first hinge shaft, the second hinge shaft, the third hinge shaft and the fourth hinge shaft are respectively provided with a pin hole, and the pin shaft is inserted into the pin hole.

6. The plate and frame filter press according to any one of claims 1 to 4, characterized in that: The first clamping body and the second clamping body are respectively in an obtuse angle shape, and the obtuse angle vertex of the first clamping body and the obtuse angle vertex of the second clamping body are hinged to each other through the pivot.

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