Vacuum filtering system and device

Abstract

The utility model provides a vacuum filtration system and device, the vacuum filtration device comprises: a transmission mechanism, a filter, a material recovery tank and a vacuum system, the filter is arranged right below the transmission mechanism and is connected with the material recovery tank, and the discharge end of the material recovery tank is connected with the vacuum system; the conveying mechanism comprises a conveying belt and a processing assembly. The processing assembly comprises a cleaning mechanism and a drying mechanism. The material recovery tank is arranged in a layered mode and comprises a gas recovery section on the top layer, a liquid recovery section on the middle layer and a particulate matter recovery section on the bottom layer, and the middle layer is provided with a turn-back plate. The liquid recovery section comprises a piston, and the piston moves downwards to a preset position under the adsorption effect of the particulate matter recovery section on the bottom layer. Useful gaseous, liquid and solid materials in filtrate are recycled by the material recycling tank and then enter a vacuum system after being recycled, so that equipment such as a vacuum pump is prevented from being corroded or damaged, the waste of the materials is reduced, and the filtering performance and the economic and practical performance are improved.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum devices, and in particular to a vacuum filtration system and device. Background Art

[0002] The vacuum filter is an existing industrial production technology that uses the effect of vacuum negative pressure to make the liquid in the suspension pass through the filter medium (such as filter cloth) and then be sucked into the vacuum filtration system for further processing, while the solid particles are retained by the filter medium, thereby achieving solid-liquid separation. The part that filters solid particles can continuously complete operations such as filtration, washing, drying, and filter cloth regeneration. When the liquid in the suspension flows to the filter medium, solid particles that are larger than or similar to the pore size of the filter medium will first deposit on the surface of the filter medium to form an initial layer, and the subsequent continuous deposition of solid particles will gradually form a filter cake with a certain thickness on the initial deposition layer.

[0003] The slurry is sent to the filter cloth of the equipment, and the filter cloth is conveyed by a heavy rubber belt. The rubber belt has grooves and a through hole in the middle so that the liquid can be sucked into the vacuum box. The filtrate and air are pumped into the vacuum main pipe at the same time, and the steam and water are separated first. The separated gas is pumped away by the vacuum pump. The liquid is vacuum-sucked by the water ring vacuum pump and passes through the forming area, the washing area and the drying area in turn to form a qualified filter cake. However, some soluble media may be dissolved in the filtered filtrate. This dissolved part of the material entering the vacuum pump may cause the vacuum pump to be corroded, or affect the vacuum degree of suction, and also cause material loss, which in turn affects the overall filtering performance and economic performance of the vacuum filter. Utility Model Content

[0004] The embodiments of the utility model provide a vacuum filtration system and device to solve the above-mentioned technical problems.

[0005] In a first aspect, the utility model provides a vacuum filtration system comprising: a transmission mechanism, a filter, a material recovery tank, and a vacuum system, wherein the filter is arranged directly below the transmission mechanism and connected to the material recovery tank, and the discharge end of the material recovery tank is connected to the vacuum system;

[0006] Wherein, the conveying mechanism comprises a conveying belt and a processing component, the processing component comprises a cleaning mechanism and a drying mechanism, the processing component is arranged above the conveying belt, the drying mechanism is arranged below the conveying belt, and the conveying belt comprises a material blocking skirt; the vacuum system comprises at least two vacuum liquid discharge devices, and the plurality of vacuum liquid discharge devices are arranged in stages;

[0007] The material recovery tank is arranged in layers, including: a gas recovery section on the top layer, a liquid recovery section on the middle layer, and a particle recovery section on the bottom layer. The middle layer is provided with a return plate, and the return plate is arranged obliquely with respect to the feeding direction of the feed inlet; the liquid recovery section includes a piston, and the piston moves downward to a preset position under the adsorption action of the particle recovery section on the bottom layer.

[0008] Optionally, the material recovery tank also includes: a liquid outlet pipe, a gas storage tank and a solid waste pipe, the liquid outlet pipe is arranged at the bottom of the middle layer, the gas storage tank is arranged on the outside of the gas recovery section and is connected to the gas outlet pipe, and the solid waste pipe is arranged at the bottom of the particulate matter recovery section.

[0009] Optionally, the vacuum box of the vacuum liquid discharge device includes an upper cavity and a lower cavity, the upper cavity is partitioned from the lower cavity, a vacuum valve is provided outside the upper cavity, and a pressure relief valve is provided outside the lower cavity.

[0010] Optionally, the outer sides of the material recovery tank and the vacuum box are provided with a plurality of individual holes.

[0011] Optionally, it also includes a squeezing mechanism, which is arranged on the processing component and moves synchronously with the conveyor belt.

[0012] Optionally, the extrusion mechanism includes: a crawler track, a gear shaft and a drive motor, the drive motor is drivingly connected to the gear shaft, and the crawler track is meshed with a plurality of gear shafts distributed in a spatial range.

[0013] Optionally, it also includes an electrical system, which includes a control cabinet, a pneumatic valve, and a touch controller.

[0014] In a second aspect, the utility model further provides a vacuum filtration device, which includes any of the aforementioned vacuum filtration systems, and the vacuum filtration device is configured to recover gaseous, liquid, and solid materials in the filtrate during the vacuum filtration process.

[0015] Optionally, it further includes a detection system and a correction system, wherein the detection system and the correction system are integrated in the vacuum filtration system, and the correction system is connected to the transmission mechanism and is configured to correct the transmission direction of the conveyor belt.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a vacuum filtration system and device, which includes a transmission mechanism, a filter, a material recovery tank, and a vacuum system. The filter is arranged directly below the transmission mechanism and connected to the material recovery tank, and the discharge end of the material recovery tank is connected to the vacuum system, that is, before the filtered filtrate enters the vacuum system for vacuum separation and treatment, the filtrate is passed into the material recovery tank, and the useful gaseous, liquid and solid materials in the filtrate are recovered by the material recovery tank, and then enter the vacuum system after recovery and treatment, which not only prevents the filtrate from directly entering the vacuum system and corroding or damaging the vacuum pump and other equipment, but also reduces the waste of materials and improves the overall filtration performance and economic and practical performance.

[0018] For details, please refer to the specific embodiments of the specification and the specific description of the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram showing the structure of the vacuum filtration system provided by the utility model;

[0020] Figure 2 The structure and partial cross-sectional view of the vacuum liquid discharge device in the embodiment of the present application are shown;

[0021] Figure 3 A cross-sectional view and internal structure schematic diagram of a material recovery tank in an embodiment of the present application are shown;

[0022] Figure 4 A partial cross-sectional schematic diagram of an atomizing tower and a humidifying tower in an embodiment of the present application is shown.

[0023] Reference numerals:

[0024] 1. Conveyor belt; 2. Processing component; 21. Cleaning mechanism; 22. Drying mechanism; 3. Vacuum drainage device; 31. Upper cavity; 32. Lower cavity; 310. Vacuum valve, 320. Pressure relief valve; 4. Material recovery tank; 40. Return plate; 41. Gas recovery section; 42. Liquid recovery section; 43. Particle recovery section; 410. Gas storage tank; 420. Liquid outlet pipe; 430. Solid waste pipe; 5. Extrusion mechanism; 51. Track; 52. Gear shaft; 10. Manhole. DETAILED DESCRIPTION

[0025] The technical solutions in the application embodiments will be described clearly and completely below in conjunction with the accompanying drawings in the application embodiments. In addition, the phrases "in one embodiment" or "in an embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics may be combined in one or more embodiments in any suitable manner.

[0026] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the article or terminal device including the elements.

[0027] In the related technology about vacuum filtration, the vacuum filter uses the effect of vacuum negative pressure to make the liquid in the suspension pass through the filter cloth and then be sucked into the vacuum filtration system for further processing, while the solid particles are intercepted by the filter cloth, and then these solid particles are dried into a filter cake state, and then removed from the filter cloth, and the filter cloth continues to circulate to receive other suspensions to be processed. However, in the prior art, the filtrate filtered and cleaned by the filter cloth enters the vacuum system, which may cause the vacuum pump in the vacuum system to be corroded, or affect the vacuum degree of suction, and also cause material loss, which in turn affects the overall filtering performance and economic and practical performance of the vacuum filter. For this reason, the utility model provides a vacuum filtration system and device.

[0028] In the first aspect, the utility model provides a vacuum filtration system, which includes: a transmission mechanism, a filter, a material recovery tank 4, and a vacuum system. The filter is arranged directly below the transmission mechanism and connected to the material recovery tank 4, and the discharge end of the material recovery tank 4 is connected to the vacuum system.

[0029] The vacuum filtration system provided by the utility model comprises a transmission mechanism, a filter, a material recovery tank 4, and a vacuum system. The filter is arranged directly below the transmission mechanism and connected to the material recovery tank 4. The discharge end of the material recovery tank 4 is connected to the vacuum system, that is, before the filtered filtrate enters the vacuum system for vacuum separation and treatment, the filtrate is passed into the material recovery tank 4. The material recovery tank 4 is used to recover useful gaseous, liquid and solid materials in the filtrate, and the recovered materials enter the vacuum system again after treatment. This not only prevents the filtrate from directly entering the vacuum system and corroding or damaging equipment such as the vacuum pump, but also reduces material waste and improves the overall filtration performance and economic and practical performance.

[0030] Among them, the aforementioned transmission mechanism includes a conveyor belt 1 and a processing component 2, the processing component 2 includes a cleaning mechanism 21 and a drying mechanism 22, the processing component 2 is arranged above the conveyor belt 1, and the drying mechanism 22 is arranged below the conveyor belt 1, and the conveyor belt 1 includes a material blocking skirt; the vacuum system includes at least two vacuum drainage devices 3, and multiple vacuum drainage devices 3 are arranged in stages.

[0031] like Figure 1 As shown, in this embodiment, the conveyor belt 1 on the conveying mechanism is used to carry the filter cloth loaded with solid particles. The entire conveyor belt 1 is in a closed-loop transmission. In the extension direction of the conveyor belt 1, it includes a cleaning mechanism 21 and a drying mechanism 22, which are respectively used to wash the solid particles precipitated on the filter cloth again, and to make the components on the solid particles that can pass through the filter cloth pass through the filter cloth as much as possible, leaving only the solid particles. Then, the precipitated solid particles are conveyed to the back for drying treatment, and the drying mechanism 22 can use an existing heating component to directly dry the particles on the filter cloth.

[0032] The vacuum system includes a plurality of vacuum drainage devices 3, which collect and store the filtrate that passes through the filter cloth and realize gas-liquid separation. The plurality of vacuum drainage devices 3 are arranged in stages, one of which is used as a mother liquid for simple treatment and storage, and the other vacuum drainage devices 3 perform gas-liquid separation on the mother liquid, and the treated gas and liquid are collected after being gathered.

[0033] like Figure 2 As shown, the vacuum box of the vacuum liquid discharge device 3 includes an upper cavity 31 and a lower cavity 32, the upper cavity 31 and the lower cavity 32 are separated, a vacuum valve 310 is provided outside the upper cavity 31, and a pressure relief valve 320 is provided outside the lower cavity 32. When the vacuum valve 310 is opened, the upper cavity 31 is in a negative pressure state, and the external filtrate is sucked into the upper cavity 31. After the gas and liquid are separated, and the liquid level in the upper cavity 31 reaches the preset liquid level, the pressure relief valve 320 is opened, and the part of the liquid flows into the lower cavity 32, and finally discharged from the output pipeline connected to the lower cavity 32. The upper cavity 31 also includes a return plate 40, and the function of the return plate 40 is to collide the gas-liquid mixture sucked into the upper cavity 31 on the return plate 40, so that the bubbles burst, the gas floats to the gas outlet, and the liquid falls between the style layers of the upper and lower cavities 32 under the action of its own weight.

[0034] In addition, the material recovery tank 4 in the utility model can be arranged in layers, including: a gas recovery section 41 on the top layer, a liquid recovery section 42 on the middle layer, and a particle recovery section 43 on the bottom layer. The middle layer is provided with a return plate 40, and the return plate 40 is inclined to the feeding direction of the feed inlet; the liquid recovery section 42 includes a piston, and the piston moves downward to a preset position under the adsorption action of the particle recovery section 43 on the bottom layer.

[0035] like Figure 3 As shown, the material recovery tank 4 is used to separate the gas, liquid and solid and recycle the recyclable parts. The lighter gas rises directly to the top layer of the tank; the liquid after gas-liquid separation falls onto the piston of the middle layer. This part of the liquid may contain some small solid particles, which gradually settle in the liquid. When the liquid level and total weight of the middle layer reach the preset parameters, the bottom layer's adsorption effect on the piston and the piston and liquid's self-weight effect cause the piston to drop to the bottom layer, and the small solid particles settled in the particle recovery section 43 of the bottom layer are recovered to a specific device.

[0036] It should be noted that the material recovery tank 4 further includes: a liquid outlet pipe 420, a gas storage tank 410 and a solid waste pipe 430. The liquid outlet pipe 420 is arranged at the bottom of the middle layer, the gas storage tank 410 is arranged outside the gas recovery section 41 and communicated with the gas outlet pipe, and the solid waste pipe 430 is arranged at the bottom of the particle recovery section 43. The recovered gas is discharged into the gas storage tank 410, the recovered liquid is discharged from the liquid outlet pipe 420, and the recovered small solid particles are discharged from the solid waste pipe 430.

[0037] In some embodiments, the outer sides of the aforementioned material recovery tank 4 and the vacuum box are provided with a plurality of manholes 10. The manholes 10 are provided to facilitate maintenance personnel to enter the tank body for maintenance, and the processing process inside the tank body can also be observed through the glass at the manholes 10. The size, position, shape, etc. of the manholes 10 are not specifically limited in this embodiment.

[0038] In other embodiments, the vacuum filtration system further comprises a squeezing mechanism 5, which is disposed on the processing assembly 2 and moves synchronously with the conveyor belt 1. Figure 4 As shown, by setting an extrusion mechanism 5, an extrusion force can be applied to the particle bed on the filter cloth, so that the distance between the particles is compressed, and the liquid between the particles is squeezed through the filter cloth, reducing the pressure of subsequent filter cake drying, and then improving the energy utilization efficiency. The extrusion mechanism 5 may include: a track 51, a gear shaft 52 and a drive motor, the drive motor is connected to the gear shaft 52, and the track 51 is meshed with multiple gear shafts 52 distributed in a spatial range. The pressure of the track 51 on the particle bed is adjusted by adjusting the distance between the gear shaft 52 and the particle bed. Of course, multiple extrusion mechanisms 5 can be set according to the adaptability of the actual length of the particle bed, and this embodiment does not make specific limitations on this.

[0039] In addition, it also includes an electrical system, which includes a control cabinet, pneumatic valves, and a touch controller. The touch controller can remotely adjust various parameters in the system, including adjusting the automatic opening and closing of pneumatic valves.

[0040] In a second aspect, the utility model also provides a vacuum filtration device, which includes any of the aforementioned vacuum filtration systems, and the vacuum filtration device is configured to recover gaseous, liquid, and solid materials in the filtrate during the vacuum filtration process.

[0041] In addition, it also includes a detection system and a correction system. The detection system and the correction system are integrated in the vacuum filtration system. The correction system is connected to the transmission mechanism and is configured to correct the transmission direction of the conveyor belt 1.

[0042] In this embodiment, the aforementioned vacuum filtration system is combined with a mechanical structure to form a vacuum filtration device, which can be used to recover gaseous, liquid and solid materials in the liquid to be treated, improve filtration quality, and reduce material waste.

[0043] Finally, the utility model provides another vacuum filtration system and device, the vacuum filtration device includes: a transmission mechanism, a filter, a material recovery tank 4, and a vacuum system, the filter is arranged directly below the transmission mechanism and connected to the material recovery tank 4, and the discharge end of the material recovery tank 4 is connected to the vacuum system; the transmission mechanism includes a conveyor belt 1 and a processing component 2, the processing component 2 includes a cleaning mechanism 21 and a drying mechanism 22, the processing component 2 is arranged above the conveyor belt 1, and the drying mechanism 22 is arranged below the conveyor belt 1; the material recovery tank 4 is arranged in layers, including: a gas recovery section 41 on the top layer, a liquid recovery section 42 on the middle layer, and a particle recovery section 43 on the bottom layer, and the middle layer is provided with a return plate 40; the liquid recovery section 42 includes a piston, and the piston moves downward to a preset position under the adsorption action of the particle recovery section 43 on the bottom layer. The utility model utilizes the material recovery tank 4 to recover useful gaseous, liquid and solid materials in the filtrate, and then enters the vacuum system after recovery and processing, which not only prevents corrosion or damage to equipment such as vacuum pumps, but also reduces material waste, and improves the overall filtration performance and economic and practical performance.

[0044] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For the parts not described in detail in individual embodiments, reference can be made to the description in other embodiments. Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0045] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A vacuum filtration system, characterized in that: It comprises a transmission mechanism, a filter, a material recovery tank (4), and a vacuum system, wherein the filter is arranged directly below the transmission mechanism and connected to the material recovery tank (4), and the discharge end of the material recovery tank is connected to the vacuum system; The conveying mechanism comprises a conveying belt (1) and a processing component (2), the processing component (2) comprises a cleaning mechanism (21) and a drying mechanism (22), the processing component (2) is arranged above the conveying belt (1), the drying mechanism (22) is arranged below the conveying belt (1), and the conveying belt (1) comprises a material blocking skirt; the vacuum system comprises at least two vacuum liquid discharge devices (3), and the plurality of vacuum liquid discharge devices (3) are arranged in stages; The material recovery tank (4) is arranged in layers, comprising: a gas recovery section (41) at the top layer, a liquid recovery section (42) at the middle layer, and a particle recovery section (43) at the bottom layer; the middle layer is provided with a return plate (40), and the return plate (40) is arranged obliquely with respect to the feeding direction of the feed inlet; the liquid recovery section (42) comprises a piston, and the piston moves downward to a preset position under the adsorption action of the particle recovery section (43) at the bottom layer.

2. The vacuum filtration system according to claim 1, characterized in that: The material recovery tank (4) further comprises: a liquid outlet pipe (420), a gas storage tank (410) and a solid waste pipe (430); the liquid outlet pipe (420) is arranged at the bottom of the middle layer; the gas storage tank (410) is arranged at the outside of the gas recovery section (41) and is connected to the gas outlet pipe; and the solid waste pipe (430) is arranged at the bottom of the particle recovery section (43).

3. The vacuum filtration system according to claim 1, characterized in that: The vacuum box of the vacuum liquid discharge device (3) comprises an upper cavity (31) and a lower cavity (32), the upper cavity (31) and the lower cavity (32) are partitioned, a vacuum valve (310) is provided outside the upper cavity (31), and a pressure relief valve (320) is provided outside the lower cavity (32).

4. The vacuum filtration system according to claim 3, characterized in that: The outer sides of the material recovery tank (4) and the vacuum box are both provided with a plurality of individual holes (10).

5. The vacuum filtration system according to claim 1, characterized in that: It also comprises a squeezing mechanism (5), which is arranged on the processing component (2) and moves synchronously with the conveyor belt (1).

6. The vacuum filtration system according to claim 5, characterized in that: The extrusion mechanism (5) comprises: a crawler (51), a gear shaft (52) and a drive motor, wherein the drive motor is drivingly connected to the gear shaft (52), and the crawler (51) is meshed with a plurality of gear shafts (52) distributed in a spatial range.

7. The vacuum filtration system according to claim 1, characterized in that: It also includes an electrical system, which includes a control cabinet, a pneumatic valve, and a touch controller.

8. A vacuum filtration device, characterized in that: The vacuum filtration device comprises the vacuum filtration system according to any one of claims 1 to 7, and the vacuum filtration device is configured to recover gaseous, liquid, and solid materials in the filtrate during the vacuum filtration process.

9. The vacuum filtration device according to claim 8, characterized in that: It also comprises a detection system and a correction system, wherein the detection system and the correction system are integrated in the vacuum filtration system, and the correction system is connected to the transmission mechanism and is configured to correct the transmission direction of the transmission belt (1).

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