Hydraulic dewatering apparatus and method of use thereof

Abstract

The present application relates to the technical field of dehydration equipment and discloses a hydraulic dehydration equipment and a use method thereof, the hydraulic dehydration equipment comprising a base, a first extrusion plate, a second extrusion plate, a first driving member and a hydraulic rod, the first extrusion plate and the second extrusion plate being spaced apart along the width direction of the base and being movable relative to the base in the width direction of the base, the first driving member being arranged on the base, the first driving member being in driving connection with the first extrusion plate and the second extrusion plate through a transmission assembly to drive the first extrusion plate and the second extrusion plate to move towards or away from each other, and the hydraulic rod being arranged on the base between the first extrusion plate and the second extrusion plate and being capable of extending into the extrusion space along the length direction of the base to extrude the dehydration object. The dehydration equipment has the advantages of good dehydration effect and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dewatering equipment, in particular to a hydraulic dewatering equipment and a use method thereof. BACKGROUND

[0002] At present, the disposal problem of garbage and sundries is increasingly apparent. In order to make the garbage and sundries meet the subsequent receiving and processing requirements, the water content of the garbage and sundries must be reduced to the qualified standard range to avoid causing secondary pollution. In the related art, when many drying equipment dehydrates the garbage and sundries, there is the problem of poor dewatering effect, and the water content can only be reduced to about 68%, so that the garbage and sundries cannot meet the subsequent receiving requirements. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, an embodiment of the present application proposes a hydraulic dewatering equipment.

[0004] The hydraulic dewatering equipment of the embodiment of the present application comprises a base, a first extrusion plate, a second extrusion plate, a first driving member and a hydraulic rod, the first extrusion plate and the second extrusion plate are spaced apart on the base along the width direction of the base, an extrusion space for placing a dewatering object is defined between the first extrusion plate and the second extrusion plate, and the first extrusion plate and the second extrusion plate are movable relative to the base in the width direction of the base.

[0005] The first driving member is arranged on the base, and the first driving member is in driving connection with the first extrusion plate and the second extrusion plate through a transmission assembly to drive the first extrusion plate and the second extrusion plate to move towards or away from each other.

[0006] The hydraulic rod is arranged on the base and located between the first extrusion plate and the second extrusion plate in the width direction of the base, and the hydraulic rod can extend into the extrusion space in the length direction of the base to extrude the dewatering object.

[0007] In some embodiments, the transmission assembly comprises a central gear, a first rack and a second rack, the central gear is rotatably arranged on the base and the axis of the central gear is perpendicular to the width direction of the base, the first rack and the second rack are arranged on both sides of the central gear in the height direction of the base and are in meshing connection with the central gear, both ends of the first rack are connected with the first driving member and the first extrusion plate respectively, and the first driving member is used to drive the first rack to move in the width direction of the base, and the second rack is connected with the second extrusion plate.

[0008] In some embodiments, on a projection plane orthogonal to the width direction of the base, the projections of the first extrusion plate and the second extrusion plate are arc-shaped, and the arc-shaped openings of the first extrusion plate and the second extrusion plate are arranged opposite to each other.

[0009] In some embodiments, the hydraulic dehydration device of the present invention further includes:

[0010] A plurality of first reinforcing ribs are spaced apart along the length of the base on the outer side wall of the first extrusion plate; and / or

[0011] Multiple second reinforcing ribs are provided at intervals along the length of the base on the outer side wall of the second extrusion plate.

[0012] In some embodiments, the hydraulic dehydration device of the present invention further includes:

[0013] A first connector, located on the side of the first extrusion plate away from the second extrusion plate in the width direction of the base and connected to the first rack, has a first groove with an opening facing the first extrusion plate. The groove wall has a plurality of first connecting portions spaced apart in the height direction of the base, and the first connecting portions are connected to the outer wall of the first extrusion plate; and / or

[0014] The second connector is located on the side of the second extrusion plate away from the first extrusion plate in the width direction of the base. The second connector is connected to the second rack. The second connector has a second groove with an opening facing the second extrusion plate. The groove wall of the second groove has a plurality of second connecting portions arranged at intervals in the height direction of the base. The second connecting portions are connected to the outer wall of the second extrusion plate.

[0015] In some embodiments, at least one of the first extrusion plate and the second extrusion plate is provided with a water passage hole.

[0016] In some embodiments, the hydraulic dehydration device of the present invention further includes a support frame, wherein the base is inclinedly disposed on the support frame, and the width direction of the base is set at an acute angle to the width direction of the support frame.

[0017] In some embodiments, the hydraulic dehydration device of the present invention further includes a sealing plate and a second driving member. In the length direction of the base, the sealing plate is disposed on the side of the first extrusion plate and the second extrusion plate away from the hydraulic rod, and the sealing plate is movable in the width direction of the base. The second driving member is connected to the sealing plate to drive the sealing plate to seal the opening between the first extrusion plate and the second extrusion plate.

[0018] The method of using the hydraulic dehydration equipment of this invention, based on the hydraulic dehydration equipment described in any of the above embodiments, includes:

[0019] The dehydrated material is placed in the compression space between the first compression plate and the second compression plate;

[0020] The first driving component is controlled to drive the first extrusion plate and the second extrusion plate to move closer to each other and extrude the dehydrated material to perform primary dehydration of the dehydrated material to remove the liquid water in the dehydrated material;

[0021] A first pressure is applied to the hydraulic rod, causing the hydraulic rod to squeeze the dehydrated material in the squeezing space at a first speed, thereby performing secondary dehydration on the dehydrated material to remove free water from the dehydrated material;

[0022] Increase the first pressure to the second pressure and decrease the first speed to the second speed, maintain the pressure for a first preset time, and perform three-stage dehydration on the dehydrated material to remove molecular water from the dehydrated material.

[0023] In some embodiments, the first pressure is 10 MPa-14 MPa, and the second pressure is 18 MPa-22 MPa; and / or

[0024] The first speed is 4 m / min-5 m / min, the second speed is 2 m / min-3 m / min; and / or

[0025] The first preset time is greater than 5 minutes.

[0026] In the process of using the hydraulic dehydration equipment of this invention, the material to be dehydrated is first placed in the extrusion space between the first extrusion plate and the second extrusion plate. The first driving component is controlled to drive the first extrusion plate and the second extrusion plate to move closer to each other to extrude the material, thus performing a first-stage dehydration to remove the liquid water from the material. The water content of the material after the first-stage dehydration will be around %.

[0027] Then, the hydraulic pressure and moving speed of the hydraulic rod are controlled so that the hydraulic rod can quickly extend into the extrusion space at low pressure to extrude the dehydrated material, and perform secondary dehydration on the dehydrated material to remove the free water in the dehydrated material. The moisture content of the dehydrated material after primary dehydration will be around %.

[0028] Next, the hydraulic pressure of the hydraulic rod is increased while its moving speed is decreased, allowing it to slowly enter the extrusion space at high pressure to extrude and dehydrate the material. This pressure is maintained for a certain time, resulting in a three-stage dehydration process to remove molecular water from the material. After the first stage of dehydration, the water content of the dehydrated material is approximately %. Therefore, experimental verification shows that the hydraulic dehydration equipment of this invention can achieve three-stage dehydration of the material, resulting in a dehydration rate of approximately %. Compared with related technologies, it has advantages such as better dehydration effect.

[0029] Therefore, the hydraulic dehydration equipment of this invention has advantages such as good dehydration effect. Attached Figure Description

[0030] Figure 1 This is a side view of the hydraulic dehydration device according to an embodiment of the present invention.

[0031] Figure 2 This is another side view of the hydraulic dehydration device according to an embodiment of the present invention.

[0032] Figure 3 This is a top view of the hydraulic dehydration device according to an embodiment of the present invention.

[0033] Figure 4 This is a flowchart of a method using a hydraulic dehydration device according to an embodiment of the present invention.

[0034] Figure label:

[0035] 100 hydraulic dewatering equipment;

[0036] 1. Base; 2. First extrusion plate; 3. Second extrusion plate; 4. First drive component; 5. Hydraulic rod; 6. Central gear; 7. First rack; 8. Second rack; 9. First reinforcing rib; 10. Second reinforcing rib; 11. First connector; 1101. First groove; 1102. First connecting part; 12. Second connector; 1201. Second groove; 1202. Second connecting part; 13. Support frame; 14. Sealing plate; 15. Second drive component. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] The technical solution of this application will now be described in detail with reference to the accompanying drawings.

[0039] like Figures 1 to 4The hydraulic dehydration device 100 of the present invention shown in this embodiment includes a base 1, a first extrusion plate 2, a second extrusion plate 3, a first drive member 4, and a hydraulic rod 5. The first extrusion plate 2 and the second extrusion plate 3 are spaced apart on the base 1 along the width direction of the base 1, and an extrusion space for placing the dehydrated material is defined between the first extrusion plate 2 and the second extrusion plate 3. The first extrusion plate 2 and the second extrusion plate 3 are movable relative to the base 1 in the width direction of the base 1.

[0040] The first driving member 4 is disposed on the base 1. The first driving member 4 is connected to the first extrusion plate 2 and the second extrusion plate 3 respectively through a transmission assembly to drive the first extrusion plate 2 and the second extrusion plate 3 to move closer to or further away from each other. The hydraulic rod 5 is disposed on the base 1 and is located between the first extrusion plate 2 and the second extrusion plate 3 in the width direction of the base 1. The hydraulic rod 5 can extend into the extrusion space along the length direction of the base 1 to extrude the dehydrated material.

[0041] In the process of using the hydraulic dehydration equipment 100 of this invention, the material to be dehydrated is first placed in the extrusion space between the first extrusion plate 2 and the second extrusion plate 3. The first driving component 4 is controlled to drive the first extrusion plate 2 and the second extrusion plate 3 to move closer to each other to extrude the material to be dehydrated, so as to perform a first-stage dehydration to remove the liquid water from the material. The water content of the material after the first-stage dehydration will be about 77%.

[0042] Then, control the hydraulic pressure and moving speed of the hydraulic rod 5 so that the hydraulic rod can quickly extend into the extrusion space at low pressure to extrude the dehydrated material, and perform secondary dehydration on the dehydrated material to remove the free water in the dehydrated material. The moisture content of the dehydrated material after primary dehydration will be about 70%.

[0043] Next, the hydraulic pressure of hydraulic rod 5 is increased while its moving speed is decreased, allowing it to slowly enter the extrusion space at high pressure to extrude the dehydrated material. This pressure is maintained for a certain time, resulting in a three-stage dehydration process to remove molecular water from the material. After the first stage of dehydration, the water content of the dehydrated material is approximately 60%. Therefore, through experimental verification, the hydraulic dehydration equipment 100 of this embodiment can achieve three-stage dehydration of the dehydrated material, resulting in a dehydration rate of approximately 60%. Compared with related technologies, it has advantages such as better dehydration effect.

[0044] Therefore, the hydraulic dehydration device 100 of this invention has advantages such as good dehydration effect.

[0045] In some embodiments, the transmission assembly includes a central gear 6, a first rack 7, and a second rack 8. The central gear 6 is rotatably mounted on the base 1, and the axis of the central gear 6 is perpendicular to the width direction of the base 1. The first rack 7 and the second rack 8 are spaced apart on both sides of the central gear 6 in the height direction of the base 1 and mesh with the central gear 6 respectively. The two ends of the first rack 7 are respectively connected to a first driving member 4 and a first pressing plate 2. The first driving member 4 is used to drive the first rack 7 to move in the width direction of the base 1. The second rack 8 is connected to the second pressing plate 3.

[0046] For example, such as Figure 2 As shown, the first driving component 4 can be a hydraulic telescopic rod or a hydraulic telescopic cylinder. The first driving component 4 drives the first rack 7 to move in the width direction of the base 1. The second rack 8 moves in the opposite direction to the first rack 7 under the action of the central gear 6, so that the first pressing plate 2 and the second pressing plate 3 can move away from each other and towards each other under the action of the first rack 7 and the second rack 8, thereby making the transmission component simple in structure and convenient in transmission.

[0047] Optionally, multiple sets of the first driving component 4 and the transmission assembly can be arranged at intervals along the length of the base 1, so that when the first extrusion plate 2 and the second extrusion plate 3 are extruded, the first extrusion plate 2 and the second extrusion plate 3 are subjected to uniform force, which is beneficial to improving the effect of primary dehydration.

[0048] In some embodiments, on a projection surface orthogonal to the width direction of the base 1, the projections of the first extrusion plate 2 and the second extrusion plate 3 are arc-shaped, and the arc-shaped openings of the first extrusion plate 2 and the second extrusion plate 3 are arranged opposite to each other.

[0049] For example, both the first extrusion plate 2 and the second extrusion plate 3 are semi-circular arc-shaped plates. Figure 1 As shown, this is a diagram illustrating the state when the first extrusion plate 2 and the second extrusion plate 3 are far apart. Figure 2 The diagram shows the state when the first extrusion plate 2 and the second extrusion plate 3 are close to each other. The hydraulic dehydration device 100 of this embodiment of the invention, by setting the first pressure plate and the second extrusion plate 3 as arc-shaped plates, facilitates the limitation of the dehydrated material in the height direction of the base 1, preventing the dehydrated material from moving upwards or downwards under the extrusion force of the first extrusion plate 2 and the second extrusion plate 3 within the extrusion space, thus affecting the reliability of the first-stage dehydration of the dehydrated material.

[0050] In some embodiments, the hydraulic dewatering device 100 of the present invention further includes a plurality of first reinforcing ribs 9, which are spaced apart along the length of the base 1 on the outer side wall of the first extrusion plate 2. Since the first extrusion plate 2 is a plate, it is prone to stress deformation when it is subjected to extrusion. By providing a plurality of first reinforcing ribs 9, the structural strength of the first extrusion plate 2 can be improved, and the extrusion dewatering effect can be prevented from being reduced due to deformation during extrusion.

[0051] In some embodiments, the hydraulic dewatering device 100 of the present invention further includes a plurality of second reinforcing ribs 10, which are spaced apart along the length of the base 1 on the outer side wall of the second extrusion plate 3. Since the second extrusion plate 3 is a plate, it is prone to stress deformation when subjected to extrusion. By providing a plurality of second reinforcing ribs 10, the structural strength of the second extrusion plate 3 is improved, and the dewatering effect is prevented from being reduced due to deformation during extrusion.

[0052] In some embodiments, the hydraulic dehydration device 100 of the present invention further includes a first connector 11. The first connector 11 is located on the side of the first extrusion plate 2 away from the second extrusion plate 3 in the width direction of the base 1 and is connected to the first rack 7. The first connector 11 has a first groove 1101 with an opening facing the first extrusion plate 2. The groove wall of the first groove 1101 has a plurality of first connecting portions 1102 arranged at intervals in the height direction of the base 1. The first connecting portions 1102 are connected to the outer side wall of the first extrusion plate 2.

[0053] For example, such as Figure 1 and Figure 2 As shown, since the first extrusion plate 2 is an arc-shaped plate, in order to make the first extrusion plate 2 be subjected to uniform force in its arc direction, the first connecting member 11 is provided to facilitate the uniform force on the first extrusion plate 2 and improve the extrusion effect of the first extrusion plate 2.

[0054] In some embodiments, the hydraulic dehydration device 100 of the present invention further includes a second connector 12. The second connector 12 is located on the side of the second extrusion plate 3 away from the first extrusion plate 2 in the width direction of the base 1, and the second connector 12 is connected to the second rack 8. The second connector 12 has a second groove 1201 with an opening facing the second extrusion plate 3. The groove wall of the second groove 1201 has a plurality of second connecting portions 1202 arranged at intervals in the height direction of the base 1, and the second connecting portions 1202 are connected to the outer side wall of the second extrusion plate 3.

[0055] For example, such as Figure 1 and Figure 2As shown, since the second extrusion plate 3 is an arc-shaped plate, in order to make the second extrusion plate 3 be subjected to uniform force in its arc direction, a second connecting member 12 is provided to facilitate uniform force on the second extrusion plate 3 and improve the extrusion effect of the second extrusion plate 3.

[0056] Optionally, at least one of the first extrusion plate 2 and the second extrusion plate 3 is provided with a water passage hole.

[0057] For example, both the first extrusion plate 2 and the second extrusion plate 3 are provided with water passage holes. When the dehydrated material is being extruded, the water removed from the dehydrated material can be quickly separated from the dehydrated material through the water passage holes on the first extrusion plate 2 and the second extrusion plate 3, which helps to improve the dehydration efficiency of the hydraulic dehydration equipment 100 in this embodiment of the invention.

[0058] In some embodiments, such as Figure 2 and Figure 3 As shown, the hydraulic dehydration device of this embodiment includes a support frame 13, and a base 1 is inclinedly disposed on the support frame 13. The width direction of the base 1 is set at an acute angle to the width direction of the support frame 13. After the water in the dehydrated material is removed, it can flow out of the base 1 by gravity due to the inclination of the base 1, which further improves the separation efficiency of water and dehydrated material, and further improves the dehydration efficiency of the hydraulic dehydration device 100 of this embodiment.

[0059] In some embodiments, the hydraulic dehydration device 100 of the present invention further includes a sealing plate 14 and a second driving member 15. Along the length of the base 1, the sealing plate 14 is disposed on the side of the first extrusion plate 2 and the second extrusion plate 3 away from the hydraulic rod 5. The sealing plate 14 is movable along the width of the base 1. The second driving member 15 is connected to the sealing plate 14 to drive the sealing plate 14 to block the opening between the first extrusion plate 2 and the second extrusion plate 3.

[0060] like Figure 3 As shown, when the dehydrated material is dehydrated, the second driving component 15 is controlled to move the sealing plate 14 to block the opening between the first extrusion plate 2 and the second extrusion plate 3, preventing the dehydrated material from falling outside the extrusion space; when the dehydrated material is dehydrated, the second driving component 15 is controlled to move the sealing plate 14 to separate from the opening between the first extrusion plate 2 and the second extrusion plate 3, and the hydraulic rod 5 is controlled to extend into the extrusion space to push the dehydrated material after dehydration, so that the dehydrated material can be quickly separated from the extrusion space, making the separation simple.

[0061] The method of using the hydraulic dehydration device 100 of this invention, based on the hydraulic dehydration device described in any of the above embodiments, includes:

[0062] The dehydrated material is placed in the compression space between the first extrusion plate 2 and the second extrusion plate 3;

[0063] The first driving component 4 drives the first extrusion plate 2 and the second extrusion plate 3 to move closer to each other to extrude the dehydrated material, thereby performing a first-stage dehydration to remove liquid water from the dehydrated material.

[0064] Apply a first pressure to the hydraulic rod 5, causing the hydraulic rod 5 to squeeze the dehydrated material in the squeezing space at a first speed, thereby performing secondary dehydration on the dehydrated material to remove free water from the dehydrated material;

[0065] Increase the first pressure to the second pressure and decrease the first speed to the second speed, maintain the pressure for a first preset time, and perform three-stage dehydration on the dehydrated material to remove molecular water from the dehydrated material.

[0066] Specifically, such as Figures 1 to 4 As shown, the method of using the hydraulic dehydration device 100 in this embodiment of the invention involves first placing the material to be dehydrated in the extrusion space between the first extrusion plate 2 and the second extrusion plate 3, and controlling the first driving component 4 to drive the first extrusion plate 2 and the second extrusion plate 3 to move closer to each other to extrude the material, thereby performing a first-stage dehydration to remove the liquid water from the material. The water content of the material after the first-stage dehydration will be around 77%.

[0067] Then, control the hydraulic pressure and moving speed of the hydraulic rod 5 so that the hydraulic rod extends into the extrusion space at the first speed to extrude the dehydrated material, and perform secondary dehydration on the dehydrated material to remove the free water in the dehydrated material. The moisture content of the dehydrated material after the first stage of dehydration will be about 70%.

[0068] Next, the hydraulic pressure of hydraulic rod 5 is increased to the second pressure, and the moving speed of hydraulic rod is decreased to the second speed. The material is then slowly squeezed into the extrusion space under high pressure, and the pressure is maintained for a certain time. This process performs three stages of dehydration to remove molecular water from the material. After the first stage of dehydration, the water content of the material is approximately 60%. Therefore, through testing, it has been verified that the hydraulic dehydration equipment 100 of this embodiment can achieve three stages of dehydration, resulting in a dehydration rate of approximately 60%, and has the advantages of good dehydration effect.

[0069] Therefore, the method of using the hydraulic dehydration device 100 in this embodiment of the invention has advantages such as good dehydration effect.

[0070] Optionally, the first hydraulic pressure is 10MPa-14MPa, and the second hydraulic pressure is 18MPa-22MPa.

[0071] Optionally, the first speed is 4m / min-5m / min, and the second speed is 2m / min-3m / min.

[0072] Optionally, the first preset time is greater than 5 minutes.

[0073] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0077] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions 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 one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0078] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A method of using a hydraulic dewatering device, characterized in that, This method is based on a hydraulic dehydration device, which includes: Base; A first extrusion plate and a second extrusion plate are spaced apart on the base along the width direction of the base, and an extrusion space for placing the dehydrated material is defined between the first extrusion plate and the second extrusion plate. The first extrusion plate and the second extrusion plate are movable relative to the base in the width direction of the base. A first driving member, disposed on the base, is connected to the first extrusion plate and the second extrusion plate via a transmission assembly to drive the first extrusion plate and the second extrusion plate to move closer to or further away from each other; and A hydraulic rod is disposed on the base and located between the first extrusion plate and the second extrusion plate in the width direction of the base. The hydraulic rod can extend into the extrusion space along the length direction of the base to extrude the dehydrated material. The method of using the hydraulic dehydration equipment includes: The dehydrated material is placed in the compression space between the first compression plate and the second compression plate; The first driving component is controlled to drive the first extrusion plate and the second extrusion plate to move closer to each other and extrude the dehydrated material to perform primary dehydration of the dehydrated material to remove the liquid water in the dehydrated material; A first pressure is applied to the hydraulic rod, causing the hydraulic rod to squeeze the dehydrated material in the squeezing space at a first speed, thereby performing secondary dehydration on the dehydrated material to remove free water from the dehydrated material; Increase the first pressure to the second pressure and decrease the first speed to the second speed, maintain the pressure for a first preset time, and perform three-stage dehydration on the dehydrated material to remove molecular water from the dehydrated material.

2. The method of using the hydraulic dehydration equipment according to claim 1, characterized in that, The transmission assembly includes a central gear, a first rack, and a second rack. The central gear is rotatably mounted on the base, and the axis of the central gear is perpendicular to the width direction of the base. The first rack and the second rack are spaced apart on both sides of the central gear in the height direction of the base and mesh with the central gear respectively. The two ends of the first rack are respectively connected to the first driving member and the first pressing plate. The first driving member is used to drive the first rack to move in the width direction of the base. The second rack is connected to the second pressing plate.

3. The method of using the hydraulic dehydration equipment according to claim 2, characterized in that, On the projection plane orthogonal to the width direction of the base, the projections of the first extrusion plate and the second extrusion plate are arc-shaped, and the arc-shaped openings of the first extrusion plate and the second extrusion plate are arranged opposite to each other.

4. The method of using the hydraulic dewatering equipment according to claim 3, characterized in that, The hydraulic dehydration equipment also includes: A plurality of first reinforcing ribs are spaced apart along the length of the base on the outer side wall of the first extrusion plate; and / or Multiple second reinforcing ribs are provided at intervals along the length of the base on the outer side wall of the second extrusion plate.

5. The method of using the hydraulic dewatering equipment according to claim 3, characterized in that, The hydraulic dehydration equipment also includes: A first connector, located on the side of the first extrusion plate away from the second extrusion plate in the width direction of the base and connected to the first rack, has a first groove with an opening facing the first extrusion plate. The groove wall has a plurality of first connecting portions spaced apart in the height direction of the base, and the first connecting portions are connected to the outer wall of the first extrusion plate; and / or The second connector is located on the side of the second extrusion plate away from the first extrusion plate in the width direction of the base. The second connector is connected to the second rack. The second connector has a second groove with an opening facing the second extrusion plate. The groove wall of the second groove has a plurality of second connecting portions arranged at intervals in the height direction of the base. The second connecting portions are connected to the outer wall of the second extrusion plate.

6. The method of using the hydraulic dewatering equipment according to claim 1, characterized in that, At least one of the first extrusion plate and the second extrusion plate is provided with a water passage hole.

7. The method of using the hydraulic dewatering equipment according to claim 1, characterized in that, The hydraulic dehydration equipment includes a support frame, and the base is inclined on the support frame, with the width direction of the base forming an acute angle with the width direction of the support frame.

8. The method of using the hydraulic dewatering equipment according to claim 1, characterized in that, The hydraulic dehydration equipment also includes: A sealing plate is disposed on the side of the first extrusion plate and the second extrusion plate away from the hydraulic rod along the length direction of the base, and the sealing plate is movable along the width direction of the base; A second driving member is connected to the sealing plate to drive the sealing plate to seal the opening between the first extrusion plate and the second extrusion plate.

9. The method of using the hydraulic dewatering equipment according to any one of claims 1-8, characterized in that, The first pressure is 10MPa-14MPa, and the second pressure is 18MPa-22MPa; and / or The first speed is 4 m / min-5 m / min, the second speed is 2 m / min-3 m / min; and / or The first preset time is greater than 5 minutes.

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