A kind of sludge automatic dehydration and squeezing equipment and method

Abstract

A sludge automatic dewatering and squeezing device and method, the device includes a guide oil cylinder module, a squeezing oil cylinder module, an upper squeezing module, a lower squeezing module, a mud pushing module and a mud suction module arranged on a frame; the lower squeezing module is located below the upper squeezing module, the lower squeezing module includes a filter water bag fixed with an opening facing downward in a lower squeezing box, the squeezing oil cylinder module is connected to the upper squeezing module and drives the upper squeezing module to move up and down, the guide oil cylinder module is connected to the lower squeezing module and drives the lower squeezing module to move up and down, the squeezing oil cylinder module pushes the upper squeezing module downward and contacts the filter water bag in the lower squeezing module, and the upper squeezing module continues to move downward to dewater the sludge in the filter water bag; the mud pushing module is fixed on the side of the frame, the mud pushing module includes a push plate and an oil cylinder, the mud suction module is installed at the bottom of the frame, and the mud suction module includes a one-way solenoid valve, a mud suction pipe and a mud suction pump. The present invention can realize automatic dewatering of sludge, and has a simple structure, low cost and high dewatering efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of sludge dehydration, and in particular to an automatic sludge dehydration and squeezing device and method. Background Art

[0002] A large amount of sludge will be produced in the process of sewage treatment. If it cannot be effectively treated, it will cause secondary pollution to water bodies and the atmosphere. The key issue in sludge treatment is sludge dehydration. In modern life that advocates green and sustainable development, how to quickly, reasonably and effectively treat and dispose of sludge has become a focus of attention.

[0003] In order to solve the above problems, a variety of sludge dewatering devices have been proposed in the prior art. For example, the utility model patent with application number CN201922199400.0 provides a roller mechanism for increasing the sludge dewatering effect, which can increase the sludge dewatering effect, but the placement of sludge and the removal of dehydrated mud blocks need to be done manually, which is time-consuming and labor-intensive. For example, the invention patent with application number CN201610266014.7 provides a sludge dewatering and drying integrated device and a sludge dewatering and drying method, which can improve the utilization rate of energy while ensuring the dewatering efficiency, but its structure and process are relatively complicated.

[0004] In view of this, the designer has conducted in-depth research and actively studied, improved and trial-produced the present invention to address the many deficiencies and inconveniences caused by the imperfect structural design of the above-mentioned sludge dewatering device, and has developed and designed the present invention. Summary of the invention

[0005] The object of the present invention is to provide an automatic sludge dehydration and squeezing device and method, which can realize automatic sludge dehydration and has a simple structure, low cost and high dehydration efficiency.

[0006] In order to achieve the above object, the solution of the present invention is:

[0007] A sludge automatic dewatering and squeezing device, comprising a guide oil cylinder module, a squeezing oil cylinder module, an upper squeezing module, a lower squeezing module, a mud pushing module and a mud suction module arranged on a frame;

[0008] The upper pressing module includes an upper pressing box with upper pressing box grilles evenly arranged on the circumference and bottom surface of the upper pressing box; the lower pressing module is located below the upper pressing module, and the lower pressing module includes a water filter bag with an opening facing downward fixed in a lower pressing box, and the lower pressing box grilles are evenly arranged on the circumference of the lower pressing box;

[0009] The squeezing oil cylinder module is connected to the upper squeezing module and drives the upper squeezing module to move up and down. The guide oil cylinder module is connected to the lower squeezing module and drives the lower squeezing module to move up and down. The squeezing oil cylinder module pushes the upper squeezing module downward and contacts the filter water bag in the lower squeezing module. The upper squeezing module continues to move downward to dehydrate the sludge in the filter water bag. The water in the squeezed sludge flows out through the upper and lower pressure box grilles and is separated from the sludge, forming sludge blocks in the filter water bag.

[0010] The mud pushing module is fixed on the side of the frame. The mud pushing module includes a pushing plate and an oil cylinder. The pushing plate moves laterally under the push of the oil cylinder to push out the squeezed sludge block located under the lower squeezing module.

[0011] The sludge suction module is installed at the bottom of the frame. The sludge suction module includes a one-way solenoid valve, a sludge suction pipe and a sludge suction pump. The sludge enters the filter water bag of the lower pressing module through the sludge suction pipe.

[0012] Furthermore, the frame includes a bottom plate and a top plate, a base is provided under the bottom plate, the bottom plate and the top plate are fixedly connected by multiple columns distributed around them, at least one pair of guide columns are installed between the bottom plate and the top plate and are symmetrically arranged in pairs, and the upper pressing module and the lower pressing module slide up and down along the guide columns.

[0013] Furthermore, in the upper pressing module, upper guide sleeves respectively passing through the guide pillars are fixed on both sides of the upper pressing box, and a rubber ring is sleeved on the periphery of the bottom surface of the upper pressing box.

[0014] Furthermore, in the lower pressing module, lower guide sleeves which can pass through the guide pillars respectively are provided on both sides of the lower pressing box, and the periphery of the bag opening in the water filter bag is fixed to the lower pressing module by screws.

[0015] Furthermore, two sets of guide cylinder modules are provided and symmetrically installed in the frame. The guide cylinder module includes a guide cylinder joint block, a guide cylinder joint and a guide cylinder. The guide cylinder joint block is installed on the guide cylinder through the guide cylinder joint, and the guide cylinder joint block is fixedly connected to the lower pressing module.

[0016] Furthermore, the pressing cylinder module is installed in the middle part above the frame. The pressing cylinder module includes a pressing cylinder joint block, a pressing cylinder joint and a pressing cylinder. The pressing cylinder joint block is installed on the pressing cylinder through the pressing cylinder joint, and the pressing cylinder joint block is fixedly connected to the upper pressing module.

[0017] Furthermore, the mud pushing module is also provided with a cylinder side plate for installing the cylinder and fixed to the side of the base plate. The push plate is fixedly connected to the cylinder, and the push plate moves horizontally above the base plate under the push of the cylinder.

[0018] Furthermore, a one-way solenoid valve is installed below the central hole provided on the bottom plate, and the one-way solenoid valve is connected with the mud suction pump through the mud suction pipe.

[0019] Furthermore, a pressure sensor is provided in the filter bag, a pressure sensor is provided on the pressing cylinder module, and the guide cylinder module, the pressing cylinder module, the cylinder in the mud pushing module, the one-way solenoid valve, the pressure sensor in the filter bag and the pressure sensor on the pressing cylinder module are connected to a controller.

[0020] A method for automatic sludge dehydration and squeezing, using the automatic sludge dehydration and squeezing equipment, the method comprises the following steps:

[0021] S1, the upper pressing module is reset to the upper limit stroke, the lower pressing module is reset to the lower limit stroke, and the push plate is reset to the state before pushing mud;

[0022] S2, the one-way solenoid valve opens and the sludge suction pump starts automatically;

[0023] S3, the sludge suction pump starts to extract sludge, and the sludge enters the lower pressing module through the sludge suction pipe;

[0024] S4, when the sludge fills the filter bag, the one-way solenoid valve is closed and the sludge suction pump stops automatically;

[0025] S5, the squeezing cylinder module pushes the upper squeezing module downward to contact the filter bag of the lower squeezing module, and the upper squeezing module continues to move downward to realize the sludge dehydration operation;

[0026] S6, the squeezing cylinder module stops when the pressure limit is reached, and the water in the squeezed sludge flows out through the grilles in the upper squeezing module and the lower squeezing module and is separated from the sludge;

[0027] S7, the pressing cylinder module controls the upper pressing module, and the guide cylinder module controls the lower pressing module to slide upward along the guide column to their respective upper limit strokes at the same time;

[0028] S8, the oil cylinder drives the push plate to push the dehydrated sludge block out of the equipment;

[0029] S9, after the upper pressing module, the lower pressing module and the push plate are reset to the initial state, steps S1 to S9 are cycled in sequence to achieve fully automatic sludge dehydration until all the sludge is dehydrated.

[0030] After adopting the above structure, the present invention can automatically suck mud through the mud suction pump, and then the upper pressing module and the lower pressing module cooperate to realize the sludge dehydration operation, and then the push plate in the mud pushing module pushes the mud blocks to the outside of the equipment, so that the equipment can realize automatic sludge dehydration. The present invention has a simple structure, low cost and high dehydration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 2It is a schematic diagram of the three-dimensional structure of the upper pressing module of the present invention;

[0033] Figure 3A It is a schematic diagram of the three-dimensional structure of the lower pressing module of the present invention;

[0034] Figure 3B is a cross-sectional view of the lower pressing module of the present invention;

[0035] Figure 4 It is a schematic diagram of the upper pressing module, the lower pressing module and the push plate of the present invention in a reset state;

[0036] Figure 5 It is a schematic diagram of the sludge dewatering operation state of the present invention;

[0037] Figure 6 It is a schematic diagram of the upper pressing module and the lower pressing module of the present invention sliding to their respective upper limit strokes at the same time;

[0038] Figure 7 It is a schematic diagram of the push plate of the present invention pushing the sludge block out of the pressing device;

[0039] Figure 8 It is the work flow chart of the present invention. DETAILED DESCRIPTION

[0040] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0041] like Figure 1 As shown, the present invention discloses an automatic sludge dewatering and squeezing device, which includes a guide cylinder module 2, a squeezing cylinder module 3, an upper squeezing module 4, a lower squeezing module 5, a mud pushing module 6 and a mud suction module 7 arranged on a frame 1. Among them, the frame 1 includes a bottom plate 11 and a top plate 12 located above the bottom plate. The bottom plate 11 and the top plate 12 are fixedly connected by a plurality of columns 13 distributed around. In this embodiment, the bottom plate 11 and the top plate 12 are square plates, and four columns are connected and supported between the bottom plate 11 and the top plate 12. At least one pair of guide columns 14 are also installed between the bottom plate 11 and the top plate 12, and are arranged symmetrically in pairs. In this embodiment, four guide columns are provided to form two groups of symmetry, and the upper squeezing module 4 and the lower squeezing module 5 can slide up and down along the guide columns 14. A base 15 is also provided below the bottom plate 11. In this embodiment, the base 15 is supported by four support columns at the four corners below the bottom plate 11.

[0042] In the frame 1, two sets of guide cylinder modules 2 are provided and symmetrically installed below the top plate 12. The guide cylinder module 2 includes a guide cylinder joint block 21, a guide cylinder joint 22 and a guide cylinder 23. The guide cylinder joint block 21 is installed on the guide cylinder 23 through the guide cylinder joint 22. The guide cylinder joint block 21 is fixedly connected to the lower pressing module 5. The pressing cylinder module 3 is installed in the middle of the upper part of the frame and can be installed below the center of the top plate 12. The pressing cylinder module 3 includes a pressing cylinder joint block 31, a pressing cylinder joint 32 and a pressing cylinder 33. The pressing cylinder joint block 31 is installed on the pressing cylinder 33 through the pressing cylinder joint 32. The pressing cylinder joint block 31 is fixedly connected to the upper pressing module 4. The pressing cylinder joint block 31 can be fixedly connected to the top surface of the upper pressing module 4.

[0043] Combination Figures 1 to 3B As shown, the upper pressing module 4 includes an upper pressing box grille 411 evenly arranged on the circumference and bottom surface of an upper pressing box 41. In the upper pressing module 4 of this embodiment, upper guide sleeves 42 that pass through the guide pillars 14 are fixed on both sides of the upper pressing box 41, so as to drive the upper pressing box 41 to move on the guide pillars 14. The lower pressing module 5 is located below the upper pressing module 4. The lower pressing module 5 includes a water filter bag 52 fixed in a lower pressing box 51 with an opening facing downward. At the same time, lower pressing box grilles 511 are evenly arranged on the circumference of the lower pressing box 51; the upper pressing box grille 411 and the lower pressing box grille 511 are both used for water permeability. In the lower pressing module 5, lower guide sleeves 53 that can pass through the guide pillars 14 are also provided on both sides of the lower pressing box 51. The filter bag 52 is provided with a filter hole 521, the bottom of the filter bag 52 is fixed on the lower squeezing module, the bottom of the lower pressure box 51 is connected to the filter bag pressing plate 54, and the periphery of the opening in the filter bag can be respectively passed through the bottom of the filter bag 52 to the filter plate pressing plate 54 by a plurality of screws 55, so that the filter bag 52 is fixed and the opening faces downward. The upper pressure box 41 and the lower pressure box 51 in this embodiment are square, the bottom surface of the upper pressure box 41 forms a square plate with an upper pressure box grid 411, and the lower pressure box 51 forms a square groove frame, and the four sides of the upper pressure box 41 are located on the inner side of the four sides of the lower pressure box 51, so that the upper pressure box 41 can be pressed down to the filter bag 52 in the lower pressure box 51. A rubber ring 43 is also sleeved on the periphery of the bottom surface of the upper pressure box 41, and the rubber ring 43 can be sleeved on the square boss (not shown in the figure) at the bottom of the upper pressure box 41, so that the upper squeezing module 4 is pressed into the lower squeezing module 5 to form a buffer.

[0044] Combination Figures 4 to 6As shown, the pressing cylinder module 3 is connected to the upper pressing module 4 and drives the upper pressing module 4 to move up and down on the guide column 14. The guide cylinder module 2 is connected to the lower pressing module 5 and drives the lower pressing module 5 to move up and down on the guide column 14. The pressing cylinder module 3 pushes the upper pressing module 4 downward to make it contact with the filter water bag 52 in the lower pressing module 5. The upper pressing module 4 continues to move downward to dehydrate the sludge in the filter water bag 52. The moisture of the squeezed sludge flows out through the upper pressure box grille 411 and the lower pressure box grille 511 and is separated from the sludge, and a sludge block 8 is formed in the filter water bag 52.

[0045] like Figure 1 As shown, the mud pushing module 6 is fixed on the side of the frame 1. The mud pushing module 6 includes a push plate 61 and a cylinder 62. The push plate 61 is pushed laterally by the cylinder 62 to push out the squeezed sludge block 8 located below the lower squeezing module 5. The mud pushing module 6 is also provided with a cylinder side plate 63 for mounting the cylinder 62 and fixed on the side of the bottom plate 11. The push plate 61 is fixedly connected to the cylinder 62. The push plate 61 moves horizontally above the bottom plate 11 under the push of the cylinder 62. The mud suction module 7 is installed at the bottom of the frame 1. The mud suction module 7 includes a one-way solenoid valve 71, a mud suction pipe 72 and a mud suction pump 73. The sludge is sucked into the water filter bag 52 of the lower squeezing module 5 through the mud suction pipe 72, and then dehydrated and squeezed. A center hole (not shown) is provided in the middle of the bottom plate 11 , and a one-way solenoid valve 71 is installed below the center hole of the bottom plate 11 , below the lower pressing module 5 , and the one-way solenoid valve 71 is connected to a mud suction pump 73 through a mud suction pipe 72 .

[0046] Combination Figures 4 to 7 As shown in Figure 8, the present invention also discloses a method for automatic sludge dehydration and squeezing, using the above-mentioned automatic sludge dehydration and squeezing equipment, the method comprises the following steps:

[0047] S1, the upper pressing module 4 is reset to the upper limit stroke, the lower pressing module 5 is reset to the lower limit stroke, and the push plate 61 in the mud pushing module 6 is reset to the state before mud pushing;

[0048] S2, the one-way solenoid valve 71 is opened, and the sludge suction pump 73 is automatically started;

[0049] S3, the sludge suction pump 73 starts to extract sludge, and the sludge enters the lower pressing module 5 through the sludge suction pipe 72;

[0050] S4, when the sludge fills the filter bag 52, the one-way solenoid valve 71 is closed and the sludge suction pump 73 stops automatically;

[0051] S5, the squeezing cylinder module 3 pushes the upper squeezing module 4 downward to contact the filter bag 52 of the lower squeezing module 5, and the upper squeezing module 4 continues to move downward to squeeze the sludge in the filter bag 52 to achieve the sludge dehydration operation;

[0052] S6, the squeezing cylinder module 4 stops when the pressure reaches the limit, and the water in the squeezed sludge flows out through the grilles in the upper squeezing module 4 and the lower squeezing module 5 and is separated from the sludge;

[0053] S7, the squeezing cylinder module 3 controls the upper squeezing module 4, and the guide cylinder module 2 controls the lower squeezing module 5 to slide upward along the guide column 14 to their respective upper limit strokes;

[0054] S8, the oil cylinder 62 in the mud pushing module 6 drives the pushing plate 61 to push the dehydrated sludge block 8 out of the equipment;

[0055] S9, after the upper pressing module 4, the lower pressing module 5 and the push plate 61 are reset to the initial state, steps S1 to S9 are cycled in sequence to achieve full-automatic sludge dehydration until all the sludge is dehydrated.

[0056] In the above step S3, if the filter bag is filled with sludge, the process proceeds to step S4; if not, the sludge extraction continues. In step S6, if the squeezing cylinder module has reached the pressure limit, the process proceeds to step S7; if not, the sludge dehydration operation of step S5 continues. In step S9, if all sludge is dehydrated, the dehydration ends; if not, the process returns to step S1, and the steps are cycled in sequence.

[0057] Among them, a pressure sensor (not shown in the figure) can be provided in the filter bag 52. When the pressure reaches a certain pressure, it indicates that the sludge bag is full. A pressure sensor is provided on the squeezing cylinder module 3 to detect whether the pressure of the squeezing cylinder module has reached the pressure limit and send a signal. The guide cylinder module 2, the squeezing cylinder module 3, the cylinder 61 in the mud pushing module, the one-way solenoid valve 71, the pressure sensor in the filter bag and the pressure sensor on the squeezing cylinder module are connected to a controller (not shown in the figure). The controller receives signals from the one-way solenoid valve 71, the pressure sensor in the filter bag and the pressure sensor on the squeezing cylinder module to control the actions of the guide cylinder module 2, the squeezing cylinder module 3 and the cylinder 61. The controller is provided with a control program, and the above steps S1-S9 are implemented through the controller.

[0058] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A sludge automatic dewatering and squeezing device, characterized by: The frame includes a guide cylinder module, a pressing cylinder module, an upper pressing module, a lower pressing module, a mud pushing module and a mud suction module; The upper pressing module includes an upper pressing box with upper pressing box grilles evenly arranged on the circumference and bottom surface of the upper pressing box; the lower pressing module is located below the upper pressing module, and the lower pressing module includes a water filter bag with an opening facing downward fixed in a lower pressing box, and the lower pressing box grilles are evenly arranged on the circumference of the lower pressing box; The squeezing oil cylinder module is connected to the upper squeezing module and drives the upper squeezing module to move up and down. The guide oil cylinder module is connected to the lower squeezing module and drives the lower squeezing module to move up and down. The squeezing oil cylinder module pushes the upper squeezing module downward and contacts the filter water bag in the lower squeezing module. The upper squeezing module continues to move downward to dehydrate the sludge in the filter water bag. The water in the squeezed sludge flows out through the upper and lower pressure box grilles and is separated from the sludge, forming sludge blocks in the filter water bag. The mud pushing module is fixed on the side of the frame. The mud pushing module includes a pushing plate and an oil cylinder. The pushing plate moves laterally under the push of the oil cylinder to push out the squeezed sludge block located under the lower squeezing module. The sludge suction module is installed at the bottom of the frame. The sludge suction module includes a one-way solenoid valve, a sludge suction pipe and a sludge suction pump. The sludge enters the filter bag of the lower pressing module through the sludge suction pipe. The frame includes a bottom plate and a top plate. A base is provided under the bottom plate. The bottom plate and the top plate are fixedly connected by a plurality of columns distributed around them. At least one pair of guide columns are installed between the bottom plate and the top plate and arranged symmetrically in pairs. The upper pressing module and the lower pressing module slide up and down along the guide columns. A pressure sensor is arranged in the filter bag, a pressure sensor is arranged on the pressing cylinder module, and the guide cylinder module, the pressing cylinder module, the cylinder in the mud pushing module, the one-way solenoid valve, the pressure sensor in the filter bag and the pressure sensor on the pressing cylinder module are connected to a controller.

2. The automatic sludge dewatering and squeezing equipment according to claim 1, characterized in that: In the upper pressing module, upper guide sleeves respectively passing through the guide pillars are fixed on both sides of the upper pressing box, and a rubber ring is sleeved on the periphery of the bottom surface of the upper pressing box.

3. The automatic sludge dewatering and squeezing equipment according to claim 1, characterized in that: In the lower pressing module, lower guide sleeves which can pass through the guide pillars are arranged on both sides of the lower pressing box, and the periphery of the bag opening in the water filter bag is fixed to the lower pressing module by screws.

4. The automatic sludge dewatering and squeezing equipment according to claim 1, characterized in that: There are two sets of guide cylinder modules which are symmetrically installed in the frame. The guide cylinder module includes a guide cylinder joint block, a guide cylinder joint and a guide cylinder. The guide cylinder joint block is installed on the guide cylinder through the guide cylinder joint, and the guide cylinder joint block is fixedly connected to the lower pressing module.

5. The automatic sludge dewatering and squeezing equipment according to claim 1, characterized in that: The pressing cylinder module is installed in the middle part above the frame. The pressing cylinder module includes a pressing cylinder joint block, a pressing cylinder joint and a pressing cylinder. The pressing cylinder joint block is installed on the pressing cylinder through the pressing cylinder joint, and the pressing cylinder joint block is fixedly connected to the upper pressing module.

6. The automatic sludge dewatering and squeezing equipment according to claim 1, characterized in that: The mud pushing module is also provided with a cylinder side plate for installing the cylinder and fixed on the side of the bottom plate. The push plate is fixedly connected to the cylinder, and the push plate moves horizontally above the bottom plate under the push of the cylinder.

7. The automatic sludge dewatering and squeezing equipment according to claim 1, characterized in that: The one-way solenoid valve is installed below the central hole provided on the bottom plate, and the one-way solenoid valve is connected with the mud suction pump through the mud suction pipe.

8. A method for automatic sludge dehydration and squeezing, using the automatic sludge dehydration and squeezing equipment according to any one of claims 1 to 7, the method comprising the following steps: S1, the upper pressing module is reset to the upper limit stroke, the lower pressing module is reset to the lower limit stroke, and the push plate is reset to the state before pushing mud; S2, the one-way solenoid valve opens and the sludge suction pump starts automatically; S3, the sludge suction pump starts to extract sludge, and the sludge enters the lower pressing module through the sludge suction pipe; S4, when the sludge fills the filter bag, the one-way solenoid valve is closed and the sludge suction pump stops automatically; S5, the squeezing cylinder module pushes the upper squeezing module downward to contact the filter bag of the lower squeezing module, and the upper squeezing module continues to move downward to realize the sludge dehydration operation; S6, the squeezing cylinder module stops when the pressure limit is reached, and the water in the squeezed sludge flows out through the grilles in the upper squeezing module and the lower squeezing module and is separated from the sludge; S7, the pressing cylinder module controls the upper pressing module, and the guide cylinder module controls the lower pressing module to slide upward along the guide column to their respective upper limit strokes at the same time; S8, the oil cylinder drives the push plate to push the dehydrated sludge block out of the equipment; S9, after the upper pressing module, the lower pressing module and the push plate are reset to the initial state, steps S1 to S9 are cycled in sequence to achieve fully automatic sludge dehydration until all the sludge is dehydrated.

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