Filter pressing device for heavy metal wastewater treatment

Abstract

The invention relates to the technical field of wastewater treatment, and discloses a filter pressing device for heavy metal wastewater treatment, the filter pressing device comprises a sludge collection tank, a discharge pipe, a sludge pump and a filter press, and the sludge collection tank is provided with a dredging mechanism for dredging an inlet of the discharge pipe; the dredging mechanism comprises a first electric push rod mounted on the side wall of the sludge collecting tank, a dredging frame fixedly connected to the output end of the first electric push rod, a first guide rod slidably connected to the dredging frame and a first moving plate fixedly connected to the end, away from the dredging frame, of the first guide rod; a dredging pipe is rotationally connected to the first moving plate, and a driving assembly used for driving the dredging pipe to rotate and driving the dredging pipe to move in the direction close to the discharging pipe is installed on the dredging frame. According to the invention, the inlet of the discharge pipe can be dredged conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of wastewater treatment, and in particular to a filter press device for treating heavy metal wastewater. Background Art

[0002] Currently, wastewater treatment is a crucial component of environmental protection and water resource management. It stems from the urgent need to effectively manage and purify the large amounts of wastewater generated by industrial production and daily life. With the acceleration of industrialization and the continuous growth of the population, the discharge of various types of wastewater has increased dramatically, containing a large amount of organic matter, inorganic pollutants, heavy metals, oils and fats, and other harmful substances.

[0003] The prior art can refer to the Chinese utility model patent with authorization announcement number CN203095748U, which discloses a heavy metal wastewater treatment system, which discloses a sludge filter press system. The sludge filter press system mainly includes a sludge collection tank, a sludge pump and a filter press; the sludge generated by the filter press is handed over to a qualified unit for reception and treatment.

[0004] The sludge collection tank is connected to the inlet of the sludge pump through a discharge pipe. However, the inlet of the discharge pipe is easily blocked by sludge, and the above structure is inconvenient to dredge the inlet of the discharge pipe, which easily affects the normal operation of the sludge pump. Summary of the Invention

[0005] In order to facilitate the dredging of the inlet of the discharge pipe, the present application provides a filter press device for heavy metal wastewater treatment, which adopts the following technical solution: A filter press device for treating heavy metal wastewater comprises a sludge collection tank, a discharge pipe, a sludge pump and a filter press, wherein the sludge collection tank is provided with a dredging mechanism for dredging the inlet of the discharge pipe, and the dredging mechanism comprises a first electric push rod installed on the side wall of the sludge collection tank, a dredging frame fixed to the output end of the first electric push rod, a first guide rod slidably connected to the dredging frame, and a first movable plate fixed to one end of the first guide rod away from the dredging frame; the first movable plate is rotatably connected to the dredging pipe, and the dredging frame is provided with a driving component for driving the dredging pipe to rotate and driving the dredging pipe to move toward the discharge pipe.

[0006] By adopting the above technical solution, when the discharge pipe needs to be dredged, the first electric push rod is started first. At this time, the output end of the first electric push rod drives the dredging frame to move downward, and the downward movement of the dredging frame drives the dredging pipe to move downward. Then, the dredging pipe is driven to rotate and move toward the discharge pipe through the driving component, so that the dredging pipe can rotate into the inlet of the discharge pipe, thereby dredging the discharge pipe. In summary, the dredging mechanism set up is convenient for dredging the discharge pipe.

[0007] Optionally, the driving assembly includes a mounting frame installed on one side of the dredging frame, a second movable plate connected to the mounting frame along a vertical sliding motion, and a transmission member installed on the mounting frame for driving the second movable plate to move; a connecting rod is hinged between the second movable plate and the first movable plate, a second guide rod is fixedly connected to one side of the dredging frame, the dredging pipe is sleeved on the second guide rod, and the side wall of the second guide rod is fixedly provided with a plurality of spiral blocks in sequence along its circumference, and the inner wall of the dredging pipe is provided with a plurality of spiral grooves in sequence along its circumference, and the plurality of spiral blocks are matched with the plurality of spiral grooves in a one-to-one manner.

[0008] By adopting the above technical solution, when it is necessary to drive the dredging pipe to rotate and move, the second movable plate is first driven downward by the transmission member, and the downward movement of the second movable plate drives the connecting rod to move, and the movement of the connecting rod drives the first movable plate to move, and the movement of the first movable plate can drive the dredging pipe to move; in addition, when the dredging pipe moves, the dredging pipe can rotate under the action of the spiral block and the spiral groove; in summary, the set driving component is convenient for driving the dredging pipe to rotate and move.

[0009] Optionally, the transmission member includes a drive motor installed on the top of the mounting frame, a screw fixed to the output shaft of the drive motor, and a third guide rod fixed to the mounting frame; the second movable plate is threadedly connected to the screw, and the second movable plate is slidingly connected to the third guide rod.

[0010] By adopting the above technical solution, when it is necessary to drive the second movable plate to move, the drive motor is started first. At this time, the output shaft of the drive motor drives the screw to rotate, and the rotation of the screw can drive the second movable plate to move; in summary, the set drive component is convenient for driving the second movable plate to move.

[0011] Optionally, a fourth guide rod is fixedly connected to the top of the dredging frame, a first transverse plate is fixedly connected to the top of the sludge collection tank, and the fourth guide rod is connected to the first transverse plate by vertical sliding.

[0012] By adopting the above technical solution, the fourth guide rod is provided, which facilitates the guidance of the dredging frame, thereby improving the stability of the dredging frame.

[0013] Optionally, a dispersion mechanism is installed at the inlet of the discharge pipe in the sludge collection tank, and the dispersion mechanism includes a second horizontal plate fixedly connected to the top of the sludge collection tank, a fifth guide rod slidably connected to the second horizontal plate, a movable seat fixed to the bottom of the fifth guide rod, a driving assembly installed on the second horizontal plate for driving the movable seat to move upward, and a first rotating shaft rotatably connected to the movable seat; a first supporting spring is provided between the movable seat and the second horizontal plate, a driving assembly for driving the first rotating shaft to rotate is installed on the movable seat, a rotating rod is fixedly connected to the bottom of the first rotating shaft, and a plurality of dispersion rods are fixedly connected to the side wall of the rotating rod.

[0014] By adopting the above technical solution, when it is necessary to disperse the sludge at the inlet of the discharge pipe so that the dredge pipe can enter the discharge pipe, the moving seat is first driven upward by the driving assembly, and the upward movement of the moving seat drives the first rotating shaft to move upward, and the upward movement of the first rotating shaft drives the rotating rod to move upward, so as to avoid the rotating rod from blocking the dredge pipe, and then the first rotating shaft rotates under the action of the driving assembly, the rotation of the first rotating shaft drives the rotating rod to rotate, and the rotation of the rotating rod drives the dispersion rod to rotate, so that the sludge at the inlet of the discharge pipe can be dispersed so that the dredge pipe can enter the discharge pipe; in summary, the provided dispersion mechanism is convenient for dispersing the sludge at the inlet of the discharge pipe so that the dredge pipe can enter the discharge pipe.

[0015] Optionally, the driving assembly includes a sixth guide rod slidably connected to the second transverse plate, a third movable plate fixed to the bottom of the sixth guide rod, a second support spring fixed between the third movable plate and the second transverse plate, and a groove wheel installed at the bottom of the second transverse plate; a rope body is embedded in the groove wheel, and the two ends of the rope body are respectively fixed to the movable seat and the third movable plate; a driving plate is bolted to the top of the second movable plate, and the bottom of the driving plate can abut against the top of the third movable plate.

[0016] By adopting the above technical solution, when the second movable plate moves downward, it drives the driving plate to move downward, and the driving plate moves downward to drive the third movable plate to move downward, and then the third movable plate can drive the movable seat to move upward under the action of the rope body; in summary, the set driving assembly facilitates driving the movable seat to move upward.

[0017] Optionally, the driving assembly includes a second rotating shaft rotatably connected to the movable seat, a first bevel gear fixed to the side wall of the second rotating shaft, and a second bevel gear fixed to the first rotating shaft; the first bevel gear is meshed with the second bevel gear; the side wall of the second rotating shaft is fixed with a spur gear, the spur gear is meshed with a rack, and the rack is fixed to the inner wall of one side of the sludge collection tank.

[0018] By adopting the above technical solution, when the movable seat moves upward, it drives the spur gear to move upward, and then the spur gear rotates under the action of the rack. The rotation of the spur gear drives the second rotating shaft to rotate, and the rotation of the second rotating shaft drives the first bevel gear to rotate. The rotation of the first bevel gear drives the second bevel gear to rotate, and the rotation of the second bevel gear can drive the first rotating shaft to rotate; in summary, the driving assembly provided is convenient for driving the first rotating shaft to rotate.

[0019] Optionally, a support ring is threadedly connected to the fifth guide rod.

[0020] By adopting the above technical solution, the support ring is provided, which facilitates supporting the fifth guide rod and further facilitates supporting the movable seat.

[0021] Optionally, a pushing assembly for driving the fifth guide rod to move upward is installed on the second transverse plate.

[0022] By adopting the above technical solution, a pushing component is set up, which is convenient for driving the fifth guide rod to reset after the dredging frame is reset, and the reset of the fifth guide rod drives the movable seat to reset, and the reset of the movable seat drives the rotating rod to reset, thereby facilitating the driving of the rotating rod to reset; in summary, the pushing component is set up, which is convenient for driving the rotating rod to reset.

[0023] Optionally, the pushing assembly includes a second electric push rod installed on the top of the second horizontal plate and a push plate fixed to the output end of the second electric push rod; the top of the fifth guide rod is bolted with an abutment plate, and the push plate can abut against the bottom of the abutment plate.

[0024] By adopting the above technical solution, when it is necessary to drive the fifth guide rod to move upward, the second electric push rod is started first. At this time, the output end of the second electric push rod drives the push plate to move upward, and the push plate moves upward to drive the abutment plate to move upward. The abutment plate moves upward to drive the fifth guide rod to move upward; in summary, the setting of the pushing component facilitates driving the fifth guide rod to move upward.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. When the discharge pipe needs to be dredged, the first electric push rod is first started. At this time, the output end of the first electric push rod drives the dredging frame to move downward, and the downward movement of the dredging frame drives the dredging pipe to move downward. Then, the driving assembly drives the dredging pipe to rotate and move the dredging pipe toward the discharge pipe, so that the dredging pipe can rotate into the inlet of the discharge pipe, thereby dredging the discharge pipe. In summary, the dredging mechanism provided is convenient for dredging the discharge pipe. 2. When the dredging pipe needs to be driven to rotate and move, the second movable plate is first driven downward by the transmission member, and the downward movement of the second movable plate drives the connecting rod to move, and the movement of the connecting rod drives the first movable plate to move, and the movement of the first movable plate can drive the dredging pipe to move; in addition, when the dredging pipe moves, the dredging pipe can rotate under the action of the spiral block and the spiral groove; in summary, the drive assembly is provided to facilitate the rotation and movement of the dredging pipe; 3. When it is necessary to disperse the sludge at the inlet of the discharge pipe so that the dredge pipe can enter the discharge pipe, the moving seat is first driven upward by the driving assembly. The upward movement of the moving seat drives the first rotating shaft to move upward. The upward movement of the first rotating shaft drives the rotating rod to move upward, so as to avoid the rotating rod from blocking the dredge pipe. Then the first rotating shaft rotates under the action of the driving assembly. The rotation of the first rotating shaft drives the rotating rod to rotate. The rotation of the rotating rod drives the dispersion rod to rotate, so that the sludge at the inlet of the discharge pipe can be dispersed so that the dredge pipe can enter the discharge pipe. In summary, the dispersion mechanism is convenient for dispersing the sludge at the inlet of the discharge pipe so that the dredge pipe can enter the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a structural schematic diagram used to show the internal structure of the sludge collection tank in the embodiment of the present application.

[0028] Figure 3 It is a structural diagram used to show the dredging mechanism in the embodiment of the present application.

[0029] Figure 4 It is a structural schematic diagram used to show the connection between the second guide rod and the dredging pipe in an embodiment of the present application.

[0030] Figure 5 It is a structural diagram for showing the dispersion mechanism in an embodiment of the present application.

[0031] Reference numerals: 1, sludge collection tank; 11, discharge pipe; 2, sludge pump; 21, inlet pipe; 22, flow meter; 3, filter press; 4, dredging mechanism; 41, first electric push rod; 42, dredging frame; 43, first guide rod; 44, first movable plate; 45, dredging pipe; 451, spiral groove; 5, driving assembly; 51, mounting frame; 52, second movable plate; 53, connecting rod; 54, second guide rod; 541, spiral block; 55, driving motor; 56, lead screw; 57, third guide rod; 58, fourth guide rod; 59, first horizontal plate; 6, dispersion mechanism; 61. Second transverse plate; 62. Fifth guide rod; 621. Support ring; 63. Moving seat; 64. First rotating shaft; 65. First supporting spring; 66. Rotating rod; 67. Dispersion rod; 7. Driving assembly; 71. Sixth guide rod; 72. Third moving plate; 73. Second supporting spring; 74. Grooved wheel; 75. Rope body; 76. Driving plate; 8. Driving assembly; 81. Second rotating shaft; 82. First bevel gear; 83. Second bevel gear; 84. Spur gear; 85. Rack; 9. Pushing assembly; 91. Second electric push rod; 92. Pushing plate; 93. Abutment plate. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings.

[0033] Throughout this specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0034] The present application discloses a filter press device for treating heavy metal wastewater. Figure 1 and Figure 2 , including a sludge collection tank 1, a discharge pipe 11, a sludge pump 2 and a filter press 3. The outlet of the sludge pump 2 is connected to an inlet pipe 21. The end of the inlet pipe 21 away from the sludge pump 2 is connected to the filter press 3. A flow meter 22 is installed on the inlet pipe 21. The flow meter 22 is arranged to facilitate observation of whether the discharge pipe 11 is blocked. A dredging mechanism 4 for dredging the inlet of the discharge pipe 11 is installed on the sludge collection tank 1.

[0035] Reference Figure 2 and Figure 3 The dredging mechanism 4 includes a first electric push rod 41 vertically installed on the side wall of the sludge collection tank 1, a dredging frame 42 fixedly connected to the output end of the first electric push rod 41, a first guide rod 43 that penetrates horizontally and is slidably connected to the dredging frame 42, and a first movable plate 44 fixedly connected to the first guide rod 43 at one end away from the dredging frame 42; a dredging pipe 45 is horizontally connected to the first movable plate 44 through a bearing for horizontal rotation, and the dredging pipe 45 is closed at one end close to the discharge pipe 11 and is provided with a spike portion, and a driving component 5 for driving the dredging pipe 45 to rotate and drive the dredging pipe 45 to move toward the discharge pipe 11 is installed on the dredging frame 42. When the discharge pipe 11 needs to be dredged, the first electric push rod 41 is started first. At this time, the output end of the first electric push rod 41 drives the dredging frame 42 to move downward, and the downward movement of the dredging frame 42 drives the dredging pipe 45 to move downward, and then the driving component 5 drives the dredging pipe 45 to rotate and drive the dredging pipe 45 to move toward the discharge pipe 11, so that the dredging pipe 45 can rotate into the inlet of the discharge pipe 11, thereby dredging the discharge pipe 11; in summary, the dredging mechanism 4 is set to facilitate dredging the discharge pipe 11.

[0036] Reference Figure 2-Figure 4The driving assembly 5 includes a mounting frame 51 installed on one side of the dredging frame 42, a second movable plate 52 connected to the mounting frame 51 along the vertical sliding direction, and a transmission member installed on the mounting frame 51 for driving the second movable plate 52 to move; a connecting rod 53 is hinged between the second movable plate 52 and the first movable plate 44, a second guide rod 54 is fixed to one side of the dredging frame 42, and the dredging pipe 45 is sleeved on the second guide rod 54. The side wall of the second guide rod 54 is fixed with multiple spiral blocks 541 in sequence along its circumference, and the inner wall of the dredging pipe 45 is opened with multiple spiral grooves 451 in sequence along its circumference, and the multiple spiral blocks 541 are matched with the multiple spiral grooves 451 in one-to-one correspondence. When it is necessary to drive the dredging pipe 45 to rotate and move, the second movable plate 52 is first driven downward by the transmission member, and the second movable plate 52 moves downward to drive the connecting rod 53 to move, and the connecting rod 53 moves to drive the first movable plate 44 to move, and the movement of the first movable plate 44 can drive the dredging pipe 45 to move; in addition, when the dredging pipe 45 moves, the dredging pipe 45 can rotate under the action of the spiral block 541 and the spiral groove 451; in summary, the set driving component 5 is convenient for driving the dredging pipe 45 to rotate and move.

[0037] Reference Figure 2 and Figure 3 The transmission components include a drive motor 55 vertically mounted on the top of the mounting frame 51, a lead screw 56 vertically fixed to the output shaft of the drive motor 55, and a third guide rod 57 vertically fixed to the mounting frame 51. The second movable plate 52 is threadedly connected to the lead screw 56, and the second movable plate 52 is vertically slidably connected to the third guide rod 57, which is provided through the second movable plate 52. When the second movable plate 52 needs to be driven to move, the drive motor 55 is first started. At this time, the output shaft of the drive motor 55 drives the lead screw 56 to rotate, and the rotation of the lead screw 56 drives the second movable plate 52 to move. In summary, the drive assembly 5 is configured to facilitate the movement of the second movable plate 52.

[0038] Reference Figure 2 and Figure 3 A fourth guide rod 58 is fixed to the top of the dredging frame 42, and a first transverse plate 59 is fixed horizontally to the top of the sludge collection tank 1. The fourth guide rod 58 vertically penetrates and is slidably connected to the first transverse plate 59. The fourth guide rod 58 facilitates guiding the dredging frame 42, thereby improving the stability of the dredging frame 42.

[0039] Reference Figure 2 and Figure 5A dispersion mechanism 6 is installed at the inlet of the discharge pipe 11 in the sludge collection tank 1. The dispersion mechanism 6 includes a second horizontal plate 61 horizontally fixed to the top of the sludge collection tank 1, a fifth guide rod 62 vertically penetrating and slidingly connected to the second horizontal plate 61, a movable seat 63 fixed to the bottom of the fifth guide rod 62, a driving assembly 7 installed on the second horizontal plate 61 for driving the movable seat 63 to move upward, and a first rotating shaft 64 vertically connected to the movable seat 63 through a bearing; a first supporting spring 65 is vertically arranged between the movable seat 63 and the second horizontal plate 61, and a driving assembly 8 for driving the first rotating shaft 64 to rotate is installed on the movable seat 63, a rotating rod 66 is fixed to the bottom of the first rotating shaft 64, and a plurality of dispersion rods 67 are fixed to the side wall of the rotating rod 66. When it is necessary to disperse the sludge at the inlet of the discharge pipe 11 so that the dredge pipe 45 can enter the discharge pipe 11, the moving seat 63 is first driven upward by the driving component 7. The upward movement of the moving seat 63 drives the first rotating shaft 64 to move upward. The upward movement of the first rotating shaft 64 drives the rotating rod 66 to move upward, so as to avoid the rotating rod 66 from blocking the dredge pipe 45. Then the first rotating shaft 64 rotates under the action of the driving component 8. The rotation of the first rotating shaft 64 drives the rotating rod 66 to rotate. The rotation of the rotating rod 66 drives the dispersion rod 67 to rotate, so that the sludge at the inlet of the discharge pipe 11 can be dispersed so that the dredge pipe 45 can enter the discharge pipe 11. In summary, the dispersion mechanism 6 is provided to facilitate the dispersion of the sludge at the inlet of the discharge pipe 11 so that the dredge pipe 45 can enter the discharge pipe 11.

[0040] Reference Figure 2 and Figure 5 The driving assembly 7 includes a sixth guide rod 71 that vertically penetrates and is slidably connected to the second transverse plate 61, a third movable plate 72 fixed to the bottom of the sixth guide rod 71, a second support spring 73 vertically fixed between the third movable plate 72 and the second transverse plate 61, and a sheave 74 installed at the bottom of the second transverse plate 61; a rope body 75 is embedded in the sheave 74, and the two ends of the rope body 75 are respectively fixed to the movable seat 63 and the third movable plate 72; a driving plate 76 is horizontally bolted to the top of the second movable plate 52, and the bottom of the driving plate 76 can abut against the top of the third movable plate 72. When the second movable plate 52 moves downward, it drives the driving plate 76 to move downward, and the driving plate 76 moves downward to drive the third movable plate 72 to move downward. Then, the third movable plate 72 can drive the movable seat 63 to move upward under the action of the rope body 75; In summary, the driving assembly 7 is provided to facilitate the upward movement of the movable seat 63.

[0041] Reference Figure 2 and Figure 5The driving assembly 8 includes a second rotating shaft 81 horizontally connected to the movable seat 63 through a bearing, a first bevel gear 82 fixed to the side wall of the second rotating shaft 81, and a second bevel gear 83 fixed to the first rotating shaft 64; the first bevel gear 82 is meshed with the second bevel gear 83; a spur gear 84 is fixed to the side wall of the second rotating shaft 81, and a rack 85 is meshed on the spur gear 84, and the rack 85 is vertically fixed to the inner wall of one side of the sludge collection tank 1. When the movable seat 63 moves upward, it drives the spur gear 84 to move upward, and then the spur gear 84 rotates under the action of the rack 85. The rotation of the spur gear 84 drives the second rotating shaft 81 to rotate, and the rotation of the second rotating shaft 81 drives the first bevel gear 82 to rotate. The rotation of the first bevel gear 82 drives the second bevel gear 83 to rotate, and the rotation of the second bevel gear 83 can drive the first rotating shaft 64 to rotate. In summary, the driving assembly 8 is provided to facilitate the rotation of the first rotating shaft 64.

[0042] Reference Figure 2 and Figure 5 A support ring 621 is threadedly connected to the fifth guide rod 62 ; the support ring 621 is provided to facilitate supporting the fifth guide rod 62 , and further facilitate supporting the movable seat 63 .

[0043] Reference Figure 2 and Figure 5 A pushing assembly 9 for driving the fifth guide rod 62 to move upward is installed on the second horizontal plate 61; the setting of the pushing assembly 9 facilitates driving the fifth guide rod 62 to reset when the dredging frame 42 is reset, and the reset of the fifth guide rod 62 drives the movable seat 63 to reset, and the reset of the movable seat 63 drives the rotating rod 66 to reset, thereby facilitating driving the rotating rod 66 to reset; in summary, the setting of the pushing assembly 9 facilitates driving the rotating rod 66 to reset.

[0044] Reference Figure 2 and Figure 5 The pushing assembly 9 includes a second electric push rod 91 vertically mounted on the top of the second cross plate 61 and a push plate 92 fixed to the output end of the second electric push rod 91. An abutment plate 93 is bolted to the top of the fifth guide rod 62, and the push plate 92 can abut the bottom of the abutment plate 93. When it is necessary to drive the fifth guide rod 62 upward, the second electric push rod 91 is first activated. At this time, the output end of the second electric push rod 91 drives the push plate 92 upward. The upward movement of the push plate 92 drives the abutment plate 93 upward. The upward movement of the abutment plate 93 drives the fifth guide rod 62 upward. In summary, the setting of the pushing assembly 9 facilitates the upward movement of the fifth guide rod 62.

[0045] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A filter press device for treating heavy metal wastewater, comprising a sludge collection tank (1), a discharge pipe (11), a sludge pump (2) and a filter press (3), characterized in that: The sludge collection tank (1) is provided with a dredging mechanism (4) for dredging the inlet of the discharge pipe (11), the dredging mechanism (4) comprising a first electric push rod (41) installed on the side wall of the sludge collection tank (1), a dredging frame (42) fixedly connected to the output end of the first electric push rod (41), a first guide rod (43) slidably connected to the dredging frame (42), and a first movable plate (44) fixedly connected to one end of the first guide rod (43) away from the dredging frame (42); a dredging pipe (45) is rotatably connected to the first movable plate (44), and a driving assembly (5) for driving the dredging pipe (45) to rotate and to drive the dredging pipe (45) to move toward the discharge pipe (11) is provided on the dredging frame (42).

2. A filter press device for treating heavy metal wastewater according to claim 1, characterized in that: The driving assembly (5) comprises a mounting frame (51) mounted on one side of the dredging frame (42), a second movable plate (52) connected to the mounting frame (51) in a vertical sliding manner, and a transmission member mounted on the mounting frame (51) for driving the second movable plate (52) to move; a connecting rod (53) is hinged between the second movable plate (52) and the first movable plate (44); a second guide rod (54) is fixedly connected to one side of the dredging frame (42); the dredging pipe (45) is sleeved on the second guide rod (54); a plurality of spiral blocks (541) are fixedly connected to the side wall of the second guide rod (54) along its circumference; a plurality of spiral grooves (451) are sequentially opened on the inner wall of the dredging pipe (45) along its circumference; and the plurality of spiral blocks (541) are matched with the plurality of spiral grooves (451) in a one-to-one correspondence.

3. A filter press device for treating heavy metal wastewater according to claim 2, characterized in that: The transmission member comprises a driving motor (55) mounted on the top of the mounting frame (51), a lead screw (56) fixed to the output shaft of the driving motor (55), and a third guide rod (57) fixed to the mounting frame (51); the second movable plate (52) is threadedly connected to the lead screw (56), and the second movable plate (52) is slidably connected to the third guide rod (57).

4. A filter press device for treating heavy metal wastewater according to claim 1, characterized in that: A fourth guide rod (58) is fixedly connected to the top of the dredging frame (42), a first transverse plate (59) is fixedly connected to the top of the sludge collection tank (1), and the fourth guide rod (58) is connected to the first transverse plate (59) by sliding in the vertical direction.

5. The filter press device for treating heavy metal wastewater according to claim 2, characterized in that: A dispersion mechanism (6) is installed at the inlet of the discharge pipe (11) in the sludge collection tank (1), and the dispersion mechanism (6) comprises a second transverse plate (61) fixedly connected to the top of the sludge collection tank (1), a fifth guide rod (62) slidably connected to the second transverse plate (61), a movable seat (63) fixedly connected to the bottom of the fifth guide rod (62), a driving assembly (7) installed on the second transverse plate (61) for driving the movable seat (63) to move upward, and a first rotating shaft (64) rotatably connected to the movable seat (63); a first supporting spring (65) is provided between the movable seat (63) and the second transverse plate (61); a driving assembly (8) for driving the first rotating shaft (64) to rotate is installed on the movable seat (63); a rotating rod (66) is fixedly connected to the bottom of the first rotating shaft (64); and a plurality of dispersion rods (67) are fixedly connected to the side wall of the rotating rod (66).

6. A filter press device for treating heavy metal wastewater according to claim 5, characterized in that: The driving assembly (7) comprises a sixth guide rod (71) slidably connected to the second transverse plate (61), a third movable plate (72) fixed to the bottom of the sixth guide rod (71), a second support spring (73) fixed between the third movable plate (72) and the second transverse plate (61), and a groove wheel (74) installed at the bottom of the second transverse plate (61); a rope body (75) is embedded in the groove wheel (74), and the two ends of the rope body (75) are respectively fixed to the movable seat (63) and the third movable plate (72); a driving plate (76) is bolted to the top of the second movable plate (52), and the bottom of the driving plate (76) can abut against the top of the third movable plate (72).

7. The filter press device for treating heavy metal wastewater according to claim 5, characterized in that: The driving assembly (8) comprises a second rotating shaft (81) rotatably connected to the movable seat (63), a first bevel gear (82) fixed to the side wall of the second rotating shaft (81), and a second bevel gear (83) fixed to the first rotating shaft (64); the first bevel gear (82) is meshed with the second bevel gear (83); a spur gear (84) is fixed to the side wall of the second rotating shaft (81), a rack (85) is meshed on the spur gear (84), and the rack (85) is fixed to the inner wall of one side of the sludge collection tank (1).

8. The filter press device for treating heavy metal wastewater according to claim 5, characterized in that: A support ring (621) is threadedly connected to the fifth guide rod (62).

9. The filter press device for treating heavy metal wastewater according to claim 5, characterized in that: A pushing assembly (9) for driving the fifth guide rod (62) to move upward is installed on the second transverse plate (61).

10. A filter press device for treating heavy metal wastewater according to claim 9, characterized in that: The pushing assembly (9) comprises a second electric push rod (91) mounted on the top of the second transverse plate (61) and a push plate (92) fixed to the output end of the second electric push rod (91); the top of the fifth guide rod (62) is bolted with an abutment plate (93), and the push plate (92) can abut against the bottom of the abutment plate (93).

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