Device for removing liquid adhered to surfaces of solid particles

Abstract

The utility model provides a device for removing liquid adhered to the surfaces of solid particles. The device comprises a conveying chain assembly, a suction filtration assembly, filter cloth and a first filter pressing roller, a plurality of suction filtration assemblies are arranged on the surface of the conveying chain assembly in the annular direction of the conveying chain assembly, the suction filtration assemblies are wrapped with the filter cloth in the annular direction, the conveying chain assembly can drive the filter cloth to rotate in the annular direction, the filter cloth is used for bearing solid particles and permeating liquid media, and the suction filtration assemblies are used for suction filtration of the liquid media permeating through the filter cloth. The plurality of first filter pressing rollers are respectively arranged below the suction filtration assembly at the advancing straight line section of the conveying chain assembly; the conveying chain assembly drives the filter cloth to rotate, so that the first filter pressing roller sequentially extrudes the bottoms of the suction filtration assemblies, and solid-liquid separation is achieved. The device for removing the liquid adhered to the surfaces of the solid particles is simpler and more energy-saving, and can effectively solve the problem that the liquid adhered to sugar precipitation particles and lignin particles needs to be separated in the process of producing sugar by hydrolyzing plant fiber raw materials with concentrated acid.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology, and in particular to a device for removing liquid adhering to the surface of solid particles. Background Technology

[0002] Plant fiber raw materials are renewable biomass raw materials. Using them as raw materials, monosaccharides can be obtained through hydrolysis, and then processed through fermentation or chemical processes to produce feed protein, food, and chemical products, thereby reducing carbon emissions. This is also a strategic emerging industry currently being promoted by the state—the biomanufacturing industry. Chinese patent CN200710030294.2 proposes a method for preparing the main hydrolysate by hydrolyzing plant fiber raw materials with concentrated sulfuric acid, solving the problem of preparing hydrolysate from plant fiber raw materials with concentrated acid. Chinese patent CN200810145571.9 proposes a method for recovering sulfuric acid from concentrated acid hydrolysate of plant cellulose raw materials, solving the problem of sugar-acid separation in concentrated acid hydrolysate of plant fiber raw materials. However, after the sugar-acid separation process, the resulting solid sugar precipitate particles contain a large amount of precipitant, requiring measures to desorb and recover the precipitant adsorbed on the particle surface. Furthermore, the lignin particles obtained after dissolving and washing these sugar precipitate particles also contain a large amount of water, which needs to be removed as much as possible before entering the filter press.

[0003] Therefore, there is an urgent need for a device to remove liquid adhering to the surface of solid particles in order to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a device for removing liquid adhering to the surface of solid particles, so as to solve the problem of separating the liquid adhering to sugar precipitates and lignin particles during the concentrated acid hydrolysis of plant fiber raw materials for sugar production.

[0005] To achieve the above objectives, this utility model provides a device for removing liquid adhering to the surface of solid particles, including a conveyor chain assembly, a suction filter assembly, a filter cloth, and a first filter press roller. The surface of the conveyor chain assembly is provided with a plurality of suction filter assemblies along its circumferential direction. The filter cloth is wrapped around the suction filter assemblies along the circumferential direction. The conveyor chain assembly can drive the filter cloth to rotate along the circumferential direction. The filter cloth is used to carry solid particles and allow the liquid medium to pass through. The suction filter assemblies are used to absorb the liquid medium passing through the filter cloth. A plurality of first filter press rollers are respectively arranged below the suction filter assemblies located in the forward straight section of the conveyor chain assembly. By driving the filter cloth to rotate through the conveyor chain assembly, the first filter press rollers sequentially press the bottom of each suction filter assembly to achieve solid-liquid separation.

[0006] Preferably, the conveyor chain assembly includes a rotation drive module, a drive gear, a driven gear, a filter plate, and chain links. The output end of the rotation drive module is connected to the drive gear. The drive gear and the driven gear are arranged at intervals. A plurality of filter plates are arranged sequentially along the annular direction and surround the drive gear and the driven gear. The ends of two adjacent filter plates are connected together by the chain links. The filter plates are provided with toothed holes. The teeth of the drive gear and the teeth of the driven gear are respectively engaged in the toothed holes. Each filter plate is provided with a filter suction assembly. The filter cloth is covered on the filter plate. The rotation drive module drives the drive gear to rotate, so that the filter plate rotates under the cooperation of the driven gear, thereby causing the filter plate to drive the filter cloth to rotate.

[0007] Preferably, the suction filter assembly includes a first sponge and a second sponge. The suction filter plate has a plurality of openings, and the first sponge is disposed in each of the openings. The second sponge is disposed at the bottom of the suction filter plate and in contact with the first sponge. The first filter press roller is located below the second sponge and is used to squeeze the second sponge and cause the liquid medium inside the second sponge to flow out.

[0008] Preferably, the suction filter assembly further includes a support plate and a positioning bolt. One end of the positioning bolt is fixed to the suction filter plate. The support plate is disposed at the bottom of the second sponge and is slidably sleeved on the positioning bolt. The support plate has flow channel holes for the liquid pressed out during pressure filtration to pass through. The first filter press roller is located below the support plate. The first filter press roller can slide by squeezing the support plate, so that the support plate squeezes the second sponge.

[0009] Preferably, the suction filter assembly further includes an elastic member and a fastener, the elastic member being sleeved on the positioning bolt and located below the support plate, and the fastener locking the elastic member on the positioning bolt.

[0010] Preferably, the device for removing liquid adhering to the surface of solid particles further includes a second filter press roller, which is disposed above the suction filter assembly located on the straight return section of the conveyor chain assembly, and is used to squeeze the suction filter assembly.

[0011] Preferably, the device for removing liquid adhering to the surface of solid particles further includes a material distribution plate, which is disposed above the filter cloth. The material distribution plate divides the straight section of the filter cloth in the forward direction into a feeding zone and a suction zone, and there is a material layer gap between the material distribution plate and the filter cloth.

[0012] Preferably, the device for removing liquid adhering to the surface of solid particles further includes protective plates, with the two protective plates respectively disposed on both sides of a straight section in the forward direction of the filter cloth.

[0013] Preferably, the device for removing liquid adhering to the surface of solid particles further includes a scraper, which is positioned below the horizontal center line of the arc segment in the forward direction of the filter cloth, and is used to scrape off the solid particles that do not fall off automatically from the filter cloth.

[0014] Preferably, the device for removing liquid adhering to the surface of solid particles further includes a roller brush, which is arranged below the scraper along the arc segment of the filter cloth's forward direction. The roller brush is used to sweep away the solid particles on the filter cloth that were not scraped off by the scraper.

[0015] Compared with existing technologies, the present invention's device for removing liquid adhering to the surface of solid particles uses a suction filter assembly mounted on a conveyor chain assembly. A filter cloth is wrapped around the suction filter assembly, allowing the solid particles to pass through the liquid medium. The suction filter assembly then absorbs the liquid medium passing through the filter cloth, causing the liquid medium adhering to the solid particles to leave the solid particles. The conveyor chain assembly drives the suction filter assembly and filter cloth to rotate together, causing the first filter press roller to sequentially press the bottom of each suction filter assembly, thereby squeezing out the liquid medium absorbed within the suction filter assembly. The solid particles, having had their surface liquid medium removed, automatically fall off the filter cloth due to gravity during the forward arc section of the filter cloth, driven by the conveyor chain assembly. This achieves the separation of the adhering liquid medium and solid particles. Compared to processes such as centrifugation, the present invention's device for removing liquid adhering to the surface of solid particles is simpler and more energy-efficient, effectively solving the problem of separating the liquid adhering to sugar precipitates and lignin particles during the concentrated acid hydrolysis of plant fiber raw materials for sugar production. Attached Figure Description

[0016] Figure 1 This is a longitudinal section view of the device for removing liquid adhering to the surface of solid particles according to this utility model.

[0017] Figure 2 This is a cross-sectional view of the device for removing liquid adhering to the surface of solid particles according to this utility model.

[0018] Figure 3 This is a structural diagram of the device for removing liquid adhering to the surface of solid particles according to this utility model at a part of the filter plate position.

[0019] Figure 4 This is a structural diagram of the connection between the filter plate and the chain link in the device for removing liquid adhering to the surface of solid particles according to this utility model. Detailed Implementation

[0020] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0021] Please see Figures 1 to 3 The present invention provides a device 100 for removing liquid adhering to the surface of solid particles, comprising a conveyor chain assembly 1, a suction filter assembly 2, a filter cloth 3, and a first filter press roller 4. The surface of the conveyor chain assembly 1 is provided with a plurality of suction filter assemblies 2 along its annular direction. The filter cloth 3 is wrapped around the suction filter assemblies 2 along the annular direction. The conveyor chain assembly 1 can drive the filter cloth 3 to rotate along the annular direction. The filter cloth 3 is used to carry solid particles and allow the liquid medium to pass through. The suction filter assemblies 2 are used to absorb the liquid medium passing through the filter cloth 3. A plurality of first filter press rollers 4 are respectively arranged below the suction filter assemblies 2 located in the forward straight section of the conveyor chain assembly 1. By driving the filter cloth 3 to rotate through the conveyor chain assembly 1, the first filter press rollers 4 sequentially press the bottom of each suction filter assembly 2 to achieve solid-liquid separation.

[0022] This invention involves setting up a suction filter assembly 2 on a conveyor chain assembly 1, and covering the suction filter assembly 2 with a filter cloth 3. The filter cloth 3 carries solid particles and allows the liquid medium to pass through. The suction filter assembly 2 then absorbs the liquid medium passing through the filter cloth 3, causing the liquid medium adhering to the surface of the solid particles to leave the solid particles. The conveyor chain assembly 1 drives the suction filter assembly 2 and the filter cloth 3 to rotate together, causing the first filter press roller 4 to press the bottom of each suction filter assembly 2 in sequence, thereby squeezing out the liquid medium absorbed in the suction filter assembly 2. The solid particles that have had their liquid medium absorbed are automatically dropped off and detached from the filter cloth 3 due to gravity in the forward arc section of the filter cloth 3, driven by the conveyor chain assembly 1, thus achieving the separation of the adhering liquid medium and solid particles.

[0023] Please see Figures 1 to 4 In one embodiment, the conveyor chain assembly 1 includes a rotation drive module 11, a drive gear 12, a driven gear 13, filter plates 14, and chain links 15. The output end of the rotation drive module 11 is connected to the drive gear 12. The drive gear 12 and the driven gear 13 are arranged at intervals. Several filter plates 14 are arranged sequentially in a circumferential direction and surround the drive gear 12 and the driven gear 13. The ends of two adjacent filter plates 14 are connected together by chain links 15. The filter plates 14 are provided with toothed holes 142. The teeth of the drive gear 12 and the teeth of the driven gear 13 are respectively engaged in the toothed holes 142. Each filter plate 14 is provided with a filter suction assembly 2, and a filter cloth 3 covers the filter plate 14. The rotation drive module 11 drives the drive gear 12 to rotate, so that the filter plates 14 rotate under the cooperation of the driven gear 13, thereby causing the filter plates 14 to drive the filter cloth 3 to rotate. Specifically, the rotation drive module 11 can be an existing geared motor, but is not limited thereto.

[0024] Please see Figure 2In one embodiment, the device 100 for removing liquid adhering to the surface of solid particles of the present invention further includes a support frame 5. During the rotation of the filter plate 14, the filter plate 14 slides on the support frame 5, thereby driving the filter cloth 3 and the fixed particles on it to move in one direction.

[0025] Please see Figure 4 In one embodiment, the end of the filter plate 14 is provided with a chain link shaft 141, and the chain link 15 is installed on the chain link shaft 141 of two adjacent filter plates 14 through the shaft hole 151.

[0026] Please see Figure 1 and Figure 2 In one embodiment, there are two drive gears 12 and two driven gears 13. The two drive gears 12 are located at one end and connected together by a rotating shaft 16, and the two driven gears 13 are located at the other end and connected together by a rotating shaft 16. The output end of the rotation drive module 11 is connected to the rotating shaft 16 located at the position of the drive gears 12. Specifically, bearing seats 17 are provided at both ends of the rotating shaft 16.

[0027] Please see Figure 3 In one embodiment, the suction filter assembly 2 includes a first sponge 21 and a second sponge 22. The suction filter plate 14 has several openings 143, each containing a first sponge 21. The second sponge 22 is positioned at the bottom of the suction filter plate 14 and contacts the first sponge 21, thus communicating with it. A first filter press roller 4 is located below the second sponge 22 and is used to squeeze the second sponge 22, causing the liquid medium inside to flow out. The first sponge 21 connects the filter cloth 3 and the second sponge 22, allowing the filter cloth 3, the first sponge 21, and the second sponge 22 to collectively form the suction filter body and perform the suction filter function.

[0028] Furthermore, the suction filter assembly 2 also includes a support plate 23 and a positioning bolt 24. One end of the positioning bolt 24 is fixed to the suction filter plate 14. The support plate 23 is disposed at the bottom of the second sponge 22 and is slidably sleeved on the positioning bolt 24. The support plate 23 has flow channel holes 231 for the liquid squeezed out during pressure filtration to pass through. The first filter press roller 4 is located below the support plate 23. The first filter press roller 4 can slide by squeezing the support plate 23, so that the support plate 23 squeezes the second sponge 22. When the suction filter assembly 2 passes the position of the first filter press roller 4, the first filter press roller 4 slides by squeezing the support plate 23, so that the support plate 23 squeezes the second sponge 22. The liquid absorbed by the second sponge 22 is squeezed out and leaves the second sponge 22, achieving the purpose of removing the liquid adhering to the surface of solid particles.

[0029] Furthermore, the suction filter assembly 2 also includes an elastic member 25 and a fastener 26. The elastic member 25 is sleeved on the positioning bolt 24 and located below the support plate 23. The fastener 26 locks the elastic member 25 onto the positioning bolt 24. The elastic member 25 can elastically press against the support plate 23, thereby applying a certain elastic force to the support plate 23, which in turn gives the support plate 23 a certain compressive force to compress the second sponge 22. The elastic member 25 can be a spring or a rubber-plastic elastomer, and the fastener 26 can be a nut structure, but is not limited thereto.

[0030] Please see Figure 1 and Figure 2 In one embodiment, the device 100 for removing liquid adhering to the surface of solid particles of this invention further includes a second filter press roller 6. The second filter press roller 6 is disposed above the suction filter assembly 2 located on the straight return section of the conveyor chain assembly 1. The second filter press roller 6 is used to squeeze the suction filter assembly 2. During the rotation of the filter cloth 3 driven by the conveyor chain assembly 1, the second filter press roller 6 squeezes the second sponge 22 of the suction filter assembly 2 located on the straight return section of the conveyor chain assembly 1, thereby restoring the second sponge 22 to its initial state before liquid absorption, so as to continue the next cycle.

[0031] Please see Figure 1 In one embodiment, the device 100 for removing liquid adhering to the surface of solid particles according to this invention further includes a uniform material plate 7, which is disposed above the filter cloth 3. The uniform material plate 7 divides the straight section of the filter cloth 3 in the forward direction into a feeding zone 31 and a suction filtration zone 32, and there is a material layer gap between the uniform material plate 7 and the filter cloth 3. After the solid particles are added to the feeding zone 31, the solid particles pass through the material layer gap and enter the suction filtration zone 32. Under the action of the uniform material plate 7, the material layer thickness of the solid particles can be made uniform. The material layer thickness of the solid particles can be adjusted by adjusting the height of the uniform material plate 7.

[0032] Please see Figure 2 In one embodiment, the device 100 for removing liquid adhering to the surface of solid particles of the present invention further includes protective plates 8. The two protective plates 8 are respectively arranged on both sides of the straight section of the filter cloth 3 in the forward direction to prevent solid particles from leaking out of the range set by the filter cloth 3.

[0033] Please see Figure 1 In one embodiment, the device 100 for removing liquid adhering to the surface of solid particles of the present invention further includes a scraper 9, which is disposed below the horizontal center line of the arc segment in the forward direction of the filter cloth 3. The scraper 9 is used to scrape solid particles that do not fall off automatically from the filter cloth 3.

[0034] Furthermore, the device 100 for removing liquid adhering to the surface of solid particles of this utility model also includes a roller brush 91. The roller brush 91 is arranged below the scraper 9 along the arc segment of the filter cloth 3 in the forward direction. The roller brush 91 is used to sweep away solid particles on the filter cloth 3 that have not been scraped off by the scraper 9, so that the solid particles that the scraper 9 has not cleaned off leave the filter cloth 3.

[0035] Combination Figures 1 to 4 The specific working principle of the device 100 for removing liquid adhering to the surface of solid particles of this utility model is as follows:

[0036] The rotation drive module 11 of the conveyor chain assembly 1 drives the drive gear 12 to rotate, which in turn drives the suction plate 14 to rotate under the cooperation of the driven gear 13, so that the suction plate 14 drives the filter cloth 3 to rotate. Solid particles containing adhering liquid are added to the filter cloth 3 in the feeding area 31. The solid particles move forward under the drive of the filter cloth 3. After being uniformly distributed by the equalization plate 7, they form a material layer of a certain thickness and enter the suction filtration area 32. The liquid in the material layer is absorbed and filtered by the first sponge 21 and the second sponge 22 in the suction filtration assembly 2 and leaves the material layer. When passing through the first filter press roller 4, it is squeezed and flows out of the second sponge 22 and leaves the conveyor chain assembly 1 and the suction filtration assembly 2, thus realizing the separation of adhering liquid and solid particles. The solid particles after the adhering liquid is absorbed are automatically dropped and detached from the filter cloth 3 due to gravity in the forward arc section of the filter cloth 3 under the drive of the conveyor chain assembly 1. The solid particles that do not detach are processed by the scraper 9 and the roller brush 91 in turn and finally detach from the filter cloth 3. In the return straight section of the conveyor chain assembly 1, the second filter press roller 6 squeezes the second sponge 22 of the suction filter assembly 2, thereby restoring the second sponge 22 to its initial state before liquid absorption, so as to continue the next cycle.

[0037] In summary, the utility model of the device 100 for removing liquid adhering to the surface of solid particles achieves the removal of liquid adhering to solid particles during the conveying of solid particles by setting a suction filter component 2 on the conveying chain assembly 1 and covering the suction filter component 2 with a filter cloth 3. Through the filtration of the filter cloth 3 and the capillary suction of the first sponge 21 and the second sponge 22 of the suction filter component 2, the device removes liquid adhering to solid particles during the conveying of solid particles by the conveying chain assembly 1. Compared with processes such as centrifugation, this device is simpler and more energy-efficient, and can effectively solve the problem of separating the liquid adhering to sugar precipitates and lignin particles during the concentrated acid hydrolysis of plant fiber raw materials for sugar production.

[0038] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A device for removing liquid adhering to the surface of solid particles, characterized in that, The system includes a conveyor chain assembly, a filter suction assembly, a filter cloth, and first filter press rollers. The surface of the conveyor chain assembly is provided with a plurality of filter suction assemblies along its circumferential direction. The filter cloth is wrapped around the filter suction assemblies along the circumferential direction. The conveyor chain assembly can drive the filter cloth to rotate along the circumferential direction. The filter cloth is used to carry solid particles and allow the liquid medium to pass through. The filter suction assemblies are used to filter the liquid medium that passes through the filter cloth. A plurality of first filter press rollers are respectively disposed below the filter suction assemblies located in the forward straight section of the conveyor chain assembly. By driving the filter cloth to rotate through the conveyor chain assembly, the first filter press rollers sequentially press the bottom of each filter suction assembly to achieve solid-liquid separation.

2. The device for removing liquid adhering to the surface of solid particles according to claim 1, characterized in that, The conveyor chain assembly includes a rotation drive module, a drive gear, a driven gear, filter plates, and chain links. The output end of the rotation drive module is connected to the drive gear. The drive gear and the driven gear are arranged at intervals. Several filter plates are arranged sequentially along the annular direction and surround the drive gear and the driven gear. The ends of two adjacent filter plates are connected together by the chain links. Each filter plate has toothed holes, and the teeth of the drive gear and the driven gear respectively engage in the toothed holes. Each filter plate is provided with a filter suction assembly, and the filter cloth covers the filter plate. The rotation drive module drives the drive gear to rotate, so that the filter plate rotates under the cooperation of the driven gear, thereby causing the filter plate to drive the filter cloth to rotate.

3. The device for removing liquid adhering to the surface of solid particles according to claim 2, characterized in that, The suction filter assembly includes a first sponge and a second sponge. The suction filter plate has a plurality of openings, and the first sponge is disposed in each of the openings. The second sponge is disposed at the bottom of the suction filter plate and in contact with the first sponge. The first filter press roller is located below the second sponge and is used to squeeze the second sponge and cause the liquid medium inside the second sponge to flow out.

4. The device for removing liquid adhering to the surface of solid particles according to claim 3, characterized in that, The suction filter assembly also includes a support plate and a positioning bolt. One end of the positioning bolt is fixed to the suction filter plate. The support plate is disposed at the bottom of the second sponge and is slidably sleeved on the positioning bolt. The support plate has flow channel holes for the liquid squeezed out during pressure filtration to pass through. The first filter press roller is located below the support plate. The first filter press roller can slide by squeezing the support plate, so that the support plate squeezes the second sponge.

5. The device for removing liquid adhering to the surface of solid particles according to claim 4, characterized in that, The suction filter assembly also includes an elastic member and a fastener. The elastic member is sleeved on the positioning bolt and located below the support plate. The fastener locks the elastic member on the positioning bolt.

6. The device for removing liquid adhering to the surface of solid particles according to claim 1, characterized in that, It also includes a second filter press roller, which is disposed above the suction filter assembly located on the straight return section of the conveyor chain assembly, and is used to squeeze the suction filter assembly.

7. The device for removing liquid adhering to the surface of solid particles according to claim 1, characterized in that, It also includes a material distribution plate, which is disposed above the filter cloth. The material distribution plate divides the straight section of the filter cloth in the forward direction into a feeding area and a suction area. There is a material layer gap between the material distribution plate and the filter cloth.

8. The device for removing liquid adhering to the surface of solid particles according to claim 1, characterized in that, It also includes protective plates, with the two protective plates respectively disposed on both sides of the straight section in the forward direction of the filter cloth.

9. The device for removing liquid adhering to the surface of solid particles according to claim 1, characterized in that, It also includes a scraper, which is positioned below the horizontal center line of the arc segment in the forward direction of the filter cloth, and is used to scrape off the solid particles that do not fall off automatically from the filter cloth.

10. The apparatus for removing liquid adhering to the surface of solid particles according to claim 9, characterized in that, It also includes a roller brush, which is arranged below the scraper along the arc segment of the filter cloth's forward direction. The roller brush is used to clean the solid particles on the filter cloth that have not been scraped off by the scraper.

Images