Vacuum hydraulic dewaterer

Abstract

The present application provides a kind of vacuum hydraulic dewatering machine, including frame and the hydraulic machine being installed above the frame, the lower vacuum cavity is installed on the frame, the upper vacuum cavity is installed on the lower surface of the slide beam of the hydraulic machine, lifting sealing beam is equipped between the upper vacuum cavity and the lower vacuum cavity, upper filter belt and lower filter belt are arranged between the sealing beam and the lower vacuum cavity, compression cavity is opened in the sealing beam and matches the upper vacuum cavity, the surface of the upper vacuum cavity and the lower vacuum cavity is respectively opened with upper through hole and lower through hole, the upper through hole port in the upper vacuum cavity is connected with the bending water pipe.The present application is compact in structure, improves dehydration efficiency and dehydration effect, solves the problem that water is backflowed to filter cloth and material on the upper part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dry dehydration equipment, in particular to a vacuum hydraulic dehydrator. BACKGROUND

[0002] There are three technical routes for material dehydration: ventilation dehydration, heat source dehydration and mechanical dehydration. Mechanical dehydration is a method of dehydrating materials by using mechanical pressing force, centrifugal force and other forces on the water-containing materials.

[0003] The hydraulic dehydrator is a dehydration method that uses hydraulic power to drive the pressing ram to extrude the material and strongly squeeze the water in the material.

[0004] For solid materials with small particle size and high liquid content, such as municipal sludge, the material is prone to overflow when subjected to strong pressure from the pressing ram, and the proportion of effectively pressure-dehydrated material is small, resulting in low work efficiency. Therefore, the hydraulic dehydrator is usually provided with a pressure cavity, and the material is first added to the pressure cavity to minimize the gap between the pressure cavity and the pressing ram and to be sealed to prevent the material from escaping.

[0005] The upper, lower and four sides of the pressure cavity are provided with water outlet holes to facilitate water drainage. Due to the earth's gravity, the water in the lower part and the four sides flows naturally downward and can be quickly drained. However, the water in the upper part of the hole still flows a lot onto the material due to the earth's gravity, reducing the extrusion water removal effect. SUMMARY

[0006] The present application aims to provide a vacuum hydraulic dehydrator to improve dehydration efficiency and solve the problem of backflow of water removed from the upper part onto the filter cloth and the material.

[0007] The present application provides a vacuum hydraulic dehydrator, comprising a frame and a hydraulic machine installed above the frame, a lower vacuum cavity is installed on the frame, an upper vacuum cavity is installed on the lower surface of the slide beam of the hydraulic machine, a lifting sealing beam is arranged between the upper vacuum cavity and the lower vacuum cavity, an upper filter belt and a lower filter belt are arranged between the sealing beam and the lower vacuum cavity, a pressure cavity matching the upper vacuum cavity is formed on the sealing beam, upper and lower through holes are formed on the opposite surfaces of the upper and lower vacuum cavities, and a bent water outlet pipe is connected to the upper through hole port in the upper vacuum cavity.

[0008] Further, a groove is formed on the top surface of the lower vacuum cavity, and a boss matching the groove is arranged on the bottom surface of the sealing beam.

[0009] Further, a vertical guide column is arranged between the frame and the hydraulic machine, the guide column penetrates the slide beam, and the slide beam is slidingly connected to the guide column.

[0010] Further, a pressing ram is installed on the bottom surface of the slide beam, and the upper vacuum cavity is installed on the bottom surface of the pressing ram.

[0011] Further, a jacking cylinder is installed on the frame, and the telescopic end of the jacking cylinder is connected with the sealing beam.

[0012] Further, the inner side surface of the lower filter belt is slidably connected with the rollers and the supporting rollers installed on the frame.

[0013] Further, the rollers at both ends are connected with the driving motor.

[0014] Further, the two ends of the upper filter belt are wound on the winding rollers, and the two winding rollers are arranged along the conveying direction of the lower filter belt and are installed on the sealing beam.

[0015] Further, the upper vacuum cavity and the lower vacuum cavity are respectively provided with a drain port, the position of the drain port is lower than the position of the pipe orifice of the bending water pipe, and each drain port is connected with a vacuum pump.

[0016] Further, the drain port is sequentially connected with a water storage tank, a water tank and the vacuum pump, and the water storage tank and the water tank are communicated through a U-shaped vacuum pipe.

[0017] The present application has compact structure, improves the dehydration efficiency and effect, and avoids the backflow of the water discharged from the upper part to the filter cloth and the material. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0019] Figure 1 It is a structural schematic diagram of the present application;

[0020] Figure 2 It is a front view of the present application;

[0021] Figure 3 It is a sectional view of the present application;

[0022] Figure 4 It is a sectional view of the present application; Figure 3 It is a local enlarged view of A in the present application;

[0023] Figure 5 It is a sectional view of the present application; Figure 3 It is a local enlarged view of B in the present application;

[0024] Marked for explanation:

[0025] In the figure: 1-frame, 11-guide column, 2-hydraulic machine, 21-sliding beam, 22-pressing pestle, 3-upper vacuum cavity, 31-upper hole plate, 32-upper through hole, 33-bent water outlet pipe, 4-lower vacuum cavity, 41-lower hole plate, 42-lower through hole, 43-groove, 5-sealing beam, 51-tumulus, 52-pressing cavity, 61-drainage opening, 62-water storage tank, 63-vacuum pipe, 64-water tank, 7-vacuum pump, 8-upper filter belt, 81-winder, 9-lower filter belt, 91-roller, 92-take-up roller, 93-driving motor; DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described below in conjunction with the embodiments, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Example 1

[0030] As Figures 1-5 shown:

[0031] A vacuum hydraulic dewatering machine comprises a frame 1 and a hydraulic machine 2 installed above the frame 1, a vertical guide column 11 is arranged between the frame 1 and the hydraulic machine 2, the guide column 11 penetrates a sliding beam 21 of the hydraulic machine 2, and the sliding beam 21 is in sliding connection with the guide column 11.

[0032] A pressing ram 22 is installed on the bottom surface of the sliding beam 21, an upper vacuum cavity 3 is installed on the bottom surface of the pressing ram 22, the bottom surface of the upper vacuum cavity 3 is an upper hole plate 31, a plurality of upper through holes 32 are formed on the upper hole plate 31, and a bent water outlet pipe 33 is connected to the upper through holes 32 in the upper vacuum cavity 3.

[0033] The bent water outlet pipe 33 in the embodiment is a “7” type pipe opening, and in addition, it can also be provided as an “n” type pipe opening, so that the filtrate sucked into the upper vacuum cavity 3 after the material is dewatered cannot flow back to the material.

[0034] A lower vacuum cavity 4 corresponding to the upper vacuum cavity 3 is installed on the frame 1, the top surface of the lower vacuum cavity 4 is a lower hole plate 41, a plurality of lower through holes 42 are formed on the lower hole plate 41, and the area of the lower hole plate 41 is greater than the area of the upper hole plate 31.

[0035] The upper vacuum cavity 3 and the lower vacuum cavity 4 are respectively provided with a drain port 61, the position of the drain port 61 installed on the upper vacuum cavity 3 is lower than the position of the pipe opening of the bent water outlet pipe 33, the lower skin of the drain port 61 installed on the upper vacuum cavity 3 is lower than the upper skin of the upper hole plate 31, the top surface of the upper hole plate 31 can be provided as an inclined surface inclined to the drain port 61, so as to avoid water storage in the upper vacuum cavity 3 and avoid difficulty in draining the water in the bottom layer of the upper vacuum cavity 3.

[0036] The drain port 61 is sequentially connected with a water storage tank 62, a water tank 64 and a vacuum pump 7, and the water storage tank 62 and the water tank 64 are communicated through a U-shaped vacuum pipe 63.

[0037] A lifting sealing beam 5 is arranged between the upper vacuum cavity 3 and the lower vacuum cavity 4, a jacking cylinder is installed on the frame 1, the telescopic end of the jacking cylinder is connected with the sealing beam 5, a pressing cavity 52 matched with the upper vacuum cavity 3 is formed on the sealing beam 5, and other linear reciprocating devices can also be selected to replace the jacking cylinder to drive the sealing beam 5 to lift and descend.

[0038] The sealing beam 5 has a certain thickness (100 mm thick in the sample machine, and 5.5 tons in single weight), and the periphery of the sealing beam 5 is relatively wide. The sealing beam 5 is made so wide and thick, so as to ensure sufficient rigidity, so that the whole sealing can be ensured when it is under pressure, and deformation is avoided.

[0039] The pressing cavity 52 is matched with the upper vacuum cavity 3, and a sealing gasket can be installed on the outer side wall of the upper vacuum cavity 3.

[0040] The upper filter belt 8 is wound on the winding device 81 at both ends, and the two winding devices 81 are arranged along the conveying direction of the lower filter belt 9 and are respectively installed on the sealing beam 5. When the upper filter belt 8 is damaged, the winding device 81 can wind up the damaged part, and the undamaged upper filter belt 8 is transferred to the lower side of the upper vacuum chamber 3.

[0041] The inner side of the lower filter belt 9 is in sliding connection with the roller 91 and the supporting roller 92 installed on the rack 1, and the rollers 91 at both ends are connected with the driving motor 93.

[0042] The lower hole plate 41 is provided with a groove, and the bottom surface of the sealing beam 5 is provided with a boss 51 matched with the groove. The groove and the boss 51 are in a mortise and tenon structure, and the groove is closed when matched with the boss 51, so as to avoid material overflow. Even if the material in the compression chamber 52 has very strong fluidity, it is also impossible to break through the sealing of the boss 51, the groove and the sealing beam 5.

[0043] When the device is working, the material is shaped into a cuboid by the material distributor in the previous hydraulic dehydration process. The cuboid material is first conveyed to the lower filter belt 9. The lower filter belt 9 has a conveying function. The driving motor 93 of the lower filter belt 9 drives the roller 91 to rotate, and then the lower filter belt 9 starts to convey the cuboid material.

[0044] When the cuboid material is conveyed to the upper side of the lower vacuum chamber 4, the hydraulic machine 2 is started. The hydraulic machine 2 drives the sliding beam 21 to move downward along the guide column 11, and then the pressing ram 22 at the bottom of the sliding beam 21 and the upper vacuum chamber 3 move downward. At the same time, the upper vacuum chamber 3 moves downward, the jacking cylinder drives the sealing beam 5 to move downward.

[0045] The boss 51 of the sealing beam 5 moves downward, and the boss 51 is matched with the groove of the lower hole plate 41 to press the upper filter belt 8 and the lower filter belt 9 tightly, so as to complete the sealing. Because the area of the lower hole plate 41 is large, the sealing beam 5 falls on the edge of the lower hole plate 41.

[0046] The upper vacuum chamber 3 moves downward, the upper hole plate 31 is aligned with the compression chamber 52, the upper vacuum chamber 3 enters the compression chamber 52, and the upper hole plate 31 starts to contact the material. The vacuum pump 7 is started, and then the upper hole plate 31 continues to press down. The filtered liquid of the material is sucked into the upper vacuum chamber 3 and the lower vacuum chamber 4 through the upper filter belt 8 and the lower filter belt 9 respectively.

[0047] Then the pressing ram 22 is lifted, the upper hole plate 31 is separated from the dehydrated material, and the upper vacuum chamber 3 has a bent water pipe 33, so that the filtered liquid sucked in will not flow back to the material.

[0048] The material after the last dehydration is transported backward by the conveyance of the lower filter belt 9 to proceed to the next process. The filtrate in the upper vacuum chamber 3 and the lower vacuum chamber 4 is sucked into the water storage tank 62 by vacuum, then flows into the water tank 64 for storage through the vacuum pipe 63, and then air is sucked into the vacuum pump 7 through the connecting pipe between the water tank 64 and the vacuum pump 7 for discharge.

[0049] The application has compact structure, improves the dehydration efficiency and effect, avoids the backflow of the water from the upper part to the filter cloth and the material, has wide application prospect, can be applied to the dehydration of coal gasification fine slag, municipal sludge, coal slime, plant (such as seaweed) and other materials, saves cost, reduces the maintenance frequency, and has great economic benefits.

[0050] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vacuum hydraulic dehydrator, characterized in that: The device includes a frame and a hydraulic press mounted on the frame. A lower vacuum chamber is mounted on the frame, and an upper vacuum chamber is mounted on the lower surface of the slide beam of the hydraulic press. A lifting sealing beam is provided between the upper vacuum chamber and the lower vacuum chamber. An upper filter belt and a lower filter belt are provided between the sealing beam and the lower vacuum chamber. A pressure chamber matching the upper vacuum chamber is opened on the sealing beam. An upper through hole and a lower through hole are respectively opened on the opposite surfaces of the upper vacuum chamber and the lower vacuum chamber. A bent water outlet pipe is connected to the port of the upper through hole located in the upper vacuum chamber. The upper vacuum chamber and the lower vacuum chamber are respectively provided with drain outlets. The drain outlets are located below the position of the bent water outlet pipe. Each drain outlet is connected to a vacuum pump. The top surface of the lower vacuum chamber is provided with a groove, and the bottom surface of the sealing beam is provided with a boss that matches the groove.

2. The vacuum hydraulic dehydrator according to claim 1, characterized in that: A vertical guide column is provided between the frame and the hydraulic press. The guide column passes through the slide beam, and the slide beam is slidably connected to the guide column.

3. The vacuum hydraulic dehydrator according to claim 1, characterized in that: A pressure pestle is installed on the bottom surface of the slide beam, and the upper vacuum chamber is installed on the bottom surface of the pressure pestle.

4. A vacuum hydraulic dehydrator according to claim 1, characterized in that: A lifting cylinder is installed on the frame, and the telescopic end of the lifting cylinder is connected to the sealing beam.

5. A vacuum hydraulic dehydrator according to claim 1, characterized in that: The inner side of the lower filter belt is slidably connected to the rollers and idlers mounted on the frame.

6. A vacuum hydraulic dehydrator according to claim 5, characterized in that: The rollers located at both ends are connected to the drive motor.

7. A vacuum hydraulic dehydrator according to claim 1, characterized in that: The two ends of the upper filter belt are wound around the retractors, and the two retractors are arranged along the conveying direction of the lower filter belt and are respectively installed on the sealing beam.

8. A vacuum hydraulic dehydrator according to claim 1, characterized in that: The drain outlet is connected in sequence to the water storage tank, the water tank, and the vacuum pump. The water storage tank and the water tank are connected by a U-shaped vacuum tube.

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