Conveying device and filtering and drying equipment

Abstract

The utility model provides a conveying device and filtering and drying equipment, and relates to the technical field of positive electrode material production. The conveying device comprises a discharging bin and a conveying mechanism, wherein the discharging bin is provided with a first straight plate, a second straight plate, a first inclined plate and a second inclined plate, and the conveying mechanism is provided with a conveying belt. The first straight plate, the second straight plate, the first inclined plate and the second inclined plate jointly define a feeding port and a discharging port which are communicated, the feeding port is communicated with the filter pressing device and used for receiving filter cakes output by the filter pressing device, the conveying belt is located at the discharging port, and the conveying belt and the second straight plate jointly define an opening communicated with the discharging port. The side, deviating from the second inclined plate, of the first inclined plate and the conveying belt and the side, deviating from the first inclined plate, of the second inclined plate and the conveying belt form a preset angle alpha, and alpha is larger than 0 degree and smaller than 90 degrees. According to the conveying device, the high-water-content filter cakes are discharged into the discharging bin at a time to be temporarily stored, and the filter cakes are continuously and stably conveyed into the drying device to be dried.

Description

Technical Field

[0001] The present application relates to the technical field of cathode material production, and particularly relates to a conveying device and a filtering and drying equipment. Background Art

[0002] The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of the present disclosure, and should not be regarded as an admission or any form of implication that this information constitutes the prior art known to those skilled in the art.

[0003] The cathode material is a part of the constituent materials of a power battery, which directly affects the use performance of the power battery. Common cathode materials include lithium iron phosphate, lithium cobaltate, lithium manganate, lithium nickelate, etc.

[0004] Taking lithium iron phosphate as an example, when producing lithium iron phosphate, a pressure filtration device is usually used to filter and wash the lithium iron phosphate slurry. Since the filter cake produced after filtration and washing has a large amount of free moisture, it needs to be temporarily stored in a discharge bin and then fed into a drying device through a disc feeder for drying treatment. However, the high-moisture filter cake is prone to bridging in the discharge bin, that is, a consolidation phenomenon similar to a bridge is formed in the discharge bin. In order to improve the bridging phenomenon, the current measures are to use vibration, fluidization, arch breaking and other methods, but the improvement effect on the bridging phenomenon of the high-moisture filter cake is poor, and the disc feeder cannot continuously and stably convey the filter cake to the drying device. Thus, the drying efficiency of the filter cake is affected, and the production efficiency of the cathode material is reduced. Summary of the Utility Model

[0005] In view of this, the purpose of the present application is to provide a conveying device and a filtering and drying equipment, aiming to solve the technical problem that the drying efficiency of the filter cake is low, reducing the production efficiency of the cathode material.

[0006] To achieve the above purpose, the technical solution adopted by the present application is as follows:

[0007] In the first aspect, an embodiment of the present application provides a conveying device, which is applied to a filtering and drying equipment having a pressure filtration device and a drying device. The conveying device includes:

[0008] A discharge bin, including a first straight plate, a second straight plate, a first inclined plate and a second inclined plate. The first straight plate is connected between the first inclined plate and the second inclined plate. The second straight plate is disposed opposite to the first straight plate and is connected between the first inclined plate and the second inclined plate. The first straight plate, the second straight plate, the first inclined plate and the second inclined plate jointly define a connected feed port and a discharge port. The feed port is communicated with the pressure filtration device and is used to receive the filter cake output by the pressure filtration device;

[0009] The conveying mechanism includes a conveyor belt, which is located at the discharge port, and the conveyor belt and the second straight plate jointly define an opening connected to the discharge port, and the conveyor belt is used to input the filter cake into the drying device through the opening, and the side of the first inclined plate facing away from the second inclined plate and the side of the second inclined plate facing away from the first inclined plate are both set at a preset angle α with the conveyor belt, satisfying: 0°<α<90°.

[0010] In one embodiment of the first aspect, the following is satisfied: 75°≤α<90°.

[0011] In one of the embodiments of the first aspect, the unloading bin also includes a flexible dustproof plate, which is arranged along the circumference of the discharge port and is respectively connected to the first straight plate, the first inclined plate and the second inclined plate, and the side of the flexible dustproof plate away from the discharge port is in line contact or surface contact with the conveyor belt.

[0012] In one of the embodiments of the first aspect, the unloading bin further comprises a material-laying plate located at the opening, one side of the material-laying plate is connected to the second straight plate, and a side of the material-laying plate away from the second straight plate is arranged close to the conveyor belt.

[0013] In one of the embodiments of the first aspect, the unloading bin also includes an adjusting component, which is respectively connected to the material laying board and the second straight plate, and is used to adjust the relative positions of the material laying board and the second straight plate in a preset direction, and the preset direction is perpendicular to the conveying direction of the conveyor belt.

[0014] In one of the embodiments of the first aspect, the adjustment assembly includes a threaded fastener and a nut, a first waist hole is formed on the second straight plate and passes through it, and a second waist hole is formed on the material laying plate and passes through it, the length direction of the first waist hole and the length direction of the second waist hole are both perpendicular to the conveying direction of the conveyor belt, and the screw of the threaded fastener is passed through the first waist hole and the second waist hole, and is threadedly connected to the nut.

[0015] In one of the embodiments of the first aspect, the conveying device further includes a material guide bin, the material guide bin and the conveyor belt jointly define a material guide channel, one end of the material guide channel is connected to the opening, and an end of the material guide channel away from the opening is connected to the drying device.

[0016] In one of the embodiments of the first aspect, the material guide bin includes a dust-proof section, a curved section and a material discharge section, the curved section is connected between the dust-proof section and the material discharge section, the conveyor belt, the dust-proof section, the curved section and the material discharge section jointly define the material guide channel, the dust-proof section is arranged close to the opening, and the material discharge section is connected to the drying device.

[0017] In one embodiment of the first aspect, the conveying mechanism further includes a plurality of rollers arranged at intervals along the conveying direction of the conveyor belt, and the outer peripheral side of each roller is supported on the side of the conveyor belt facing away from the discharge bin.

[0018] In a second aspect, an embodiment of the present application provides a filter drying device, including a pressure filtration device, a drying device, a dust removal device, and the conveying device described in any of the above embodiments. The feed inlet is communicated with the pressure filtration device, the opening is communicated with the drying device, and the dust removal device is communicated with the drying device.

[0019] The beneficial effects of the present application are as follows:

[0020] The present application provides a conveying device. Since both the side of the first inclined plate of the discharge bin facing away from the second inclined plate and the side of the second inclined plate facing away from the first inclined plate are arranged at a preset angle α with the conveyor belt, and 0° < α < 90°. This not only increases the size of the feed inlet, but also makes the inner wall of the discharge bin inclined, thereby reducing the possibility of the filter cake bridging. On this basis, using a conveyor belt in cooperation with the discharge port of the discharge bin can continuously and stably convey the filter cake temporarily stored in the discharge bin to the drying device. In this way, it realizes discharging the high-moisture filter cake output by the pressure filtration device into the discharge bin for temporary storage at one time, and continuously and stably conveying the filter cake to the drying device for drying, thereby improving the drying efficiency of the filter cake and the production efficiency of the positive electrode material.

[0021] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0023] Figure 1 Shows a schematic structural diagram of a filter drying device in some embodiments of the present application;

[0024] Figure 2 Shows a schematic structural diagram of a conveying device in some embodiments of the present application;

[0025] Figure 3 Shows Figure 2 An enlarged schematic structural diagram of area A in;

[0026] Figure 4 shows Figure 2 a schematic enlarged structure diagram of area B in

[0027] Figure 5 a schematic structure diagram showing that in some embodiments of the present application, both the first inclined plate and the second inclined plate are arranged at a preset angle α with respect to the conveyor belt.

[0028] Description of main component symbols:

[0029] 1000 - Filter drying equipment; 100 - Conveying device; 110 - Discharge bin; 111 - First straight plate; 112 - Second straight plate; 1121 - First waist hole; 113 - First inclined plate; 114 - Second inclined plate; 1151 - Feed inlet; 1152 - Discharge outlet; 1153 - Opening; 116 - Flexible dust-proof plate; 117 - Spreading plate; 1171 - Second waist hole; 118 - Adjusting assembly; 1181 - Threaded fastener; 1182 - Nut; 120 - Conveying mechanism; 121 - Conveyor belt; 122 - Roller; 123 - Driving wheel; 124 - Driven wheel; 130 - Material guiding bin; 131 - Dust-proof section; 132 - Bending section; 133 - Feeding section; 200 - Pressure filtration device; 210 - Frame; 220 - Filter element; 230 - Compressing member; 300 - Drying device; 310 - Steam inlet; 320 - Steam outlet; 330 - Condensate outlet; 340 - Input port; 350 - Output port; 400 - Dust removal device; 410 - Intake pipe; 420 - Bag dust removal main body; 430 - Compressed air storage tank; 440 - Discharge valve; 450 - Return pipe; 460 - Outlet duct; 470 - Induced draft fan. Detailed implementation manners

[0030] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and should not be construed as a limitation to the present application.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0032] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0033] In this application, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0035] The cathode material is a part of the constituent materials of the power battery, which directly affects the performance of the power battery. Common cathode materials include lithium iron phosphate, lithium cobaltate, lithium manganate, lithium nickelate, etc.

[0036] Taking lithium iron phosphate as an example, when producing lithium iron phosphate, a pressure filtration device is usually used to filter and wash the lithium iron phosphate slurry. Since the filter cake produced after filtration and washing has a large amount of free moisture, it needs to be temporarily stored in a discharge bin and then fed into a drying device through a disc feeder for drying treatment. However, the high-moisture filter cake is prone to bridging in the discharge bin, that is, a consolidation phenomenon similar to a bridge is formed in the discharge bin.

[0037] In order to improve the bridging phenomenon, current measures are to use methods such as vibration, fluidization, and arch breaking. However, the improvement effect on the bridging phenomenon of high-moisture filter cakes is poor, and at the same time, the disc feeder cannot continuously and stably transport the filter cake to the drying device. Thus, the drying efficiency of the filter cake is affected, thereby reducing the production efficiency of the cathode material.

[0038] In addition, during the process of transporting the filter cake to the drying device by the current discharge bin and disk feeder, the filter cake is easily contaminated by external dust, thereby affecting the finished product quality of the cathode material.

[0039] As Figure 1 and Figure 2 shown, to solve the above technical problems, in a first aspect, an embodiment of the present application provides a conveying device 100, which relates to the technical field of cathode material production, is applied to a filtration and drying device 1000 having a pressure filtration device 200 and a drying device 300, and is used to transport the high-moisture filter cake generated by the pressure filtration device 200 to the drying device 300 for drying.

[0040] As Figure 1 、 Figure 2 and Figure 5 shown, the conveying device 100 provided in this embodiment includes: a discharge bin 110 and a conveying mechanism 120.

[0041] Among them, the discharge bin 110 includes a first straight plate 111, a second straight plate 112, a first inclined plate 113 and a second inclined plate 114. The first straight plate 111 is connected between the first inclined plate 113 and the second inclined plate 114. The second straight plate 112 is disposed opposite to the first straight plate 111 and is connected between the first inclined plate 113 and the second inclined plate 114. The first straight plate 111, the second straight plate 112, the first inclined plate 113 and the second inclined plate 114 jointly define a connected feed port 1151 and a discharge port 1152. The feed port 1151 is communicated with the pressure filtration device 200 and is used to receive the filter cake output by the pressure filtration device 200. The conveying mechanism 120 includes a conveyor belt 121. The conveyor belt 121 is located at the discharge port 1152, and the conveyor belt 121 and the second straight plate 112 jointly define an opening 1153 communicated with the discharge port 1152. The conveyor belt 121 is used to input the filter cake into the drying device 300 through the opening 1153. The sides of the first inclined plate 113 facing away from the second inclined plate 114 and the second inclined plate 114 facing away from the first inclined plate 113 are both disposed at a preset angle α with the conveyor belt 121, satisfying: 0° < α < 90°.

[0042] It can be understood that when using the conveying device 100 provided in this embodiment, the feed port 1151 of the discharge bin 110 receives the filter cake output by the pressure filtration device 200. The discharge port 1152 of the discharge bin 110 transports the received filter cake onto the conveyor belt 121. The conveyor belt 121 carries the filter cake and transports the filter cake through the opening 1153 to the drying device 300 for drying.

[0043] In this process, since both the side of the first inclined plate 113 of the discharge bin 110 facing away from the second inclined plate 114 and the side of the second inclined plate 114 facing away from the first inclined plate 113 are arranged at a preset angle α with the conveyor belt 121, and it satisfies: 0° < α < 90°. This not only increases the size of the feed inlet 1151, but also makes the inner wall of the discharge bin 110 inclined, thereby reducing the possibility of the filter cake bridging. On this basis, by using the conveyor belt to cooperate with the discharge port 1152 of the discharge bin 110, the filter cake temporarily stored in the discharge bin 110 can be continuously and stably conveyed to the drying device 300. In this way, the high-moisture filter cake output by the filter press device 200 is unloaded into the discharge bin 110 at one time for temporary storage, and the filter cake is continuously and stably conveyed to the drying device 300 for drying, thereby improving the drying efficiency of the filter cake and the production efficiency of the cathode material.

[0044] As Figure 5 shown, in one embodiment, it satisfies: 75° ≤ α < 90°.

[0045] Exemplarily, α can be selected as 75°, of course, it can also be selected as 76°, 78°, 80°, 82°, 85°, 88°, 89°, etc., as long as it is less than 90°, and no specific limitation is made here.

[0046] It should be noted that if α is too large, the size of the feed inlet 1151 will be too small, increasing the possibility of the filter cake bridging. If α is too small, the internal space of the discharge bin 110 will be small, reducing the volume of the discharge bin 110, and even causing the discharge bin 110 to fail to achieve the effect of temporarily storing the filter cake.

[0047] In this embodiment, by controlling the angles formed between the first inclined plate 113 and the conveyor belt 121 and between the second inclined plate 114 and the conveyor belt 121 within the range of greater than or equal to 75° and less than 90°, not only can the possibility of the filter cake bridging be reduced, but also the discharge bin 110 has sufficient volume to achieve the effect of temporarily storing the filter cake, so that it can cooperate with the conveyor belt 121 to better unload the high-moisture filter cake at one time and continuously and stably convey it to the drying device 300 for drying treatment.

[0048] As Figure 2 and Figure 3 shown, in one embodiment, the discharge bin 110 further includes a flexible dust-proof plate 116. The flexible dust-proof plate 116 is arranged along the circumferential direction of the discharge port 1152, and the flexible dust-proof plate 116 is respectively connected to the first straight plate 111, the first inclined plate 113 and the second inclined plate 114. The side of the flexible dust-proof plate 116 away from the discharge port 1152 is in line contact or surface contact with the conveyor belt 121.

[0049] Exemplarily, the flexible dust-proof plate 116 can be a plate-like structure with elasticity such as a rubber plate or a silica gel plate.

[0050] In this embodiment, since the flexible dust-proof plate 116 is arranged circumferentially along the discharge port 1152, the flexible dust-proof plate 116 is respectively connected to the first straight plate 111, the first inclined plate 113 and the second inclined plate 114, and the side of the flexible dust-proof plate 116 away from the discharge port 1152 is in line contact or surface contact with the conveyor belt 121. In this way, a sealed connection can be achieved between the side of the discharge bin 110 with the discharge port 1152 and the conveyor belt 121, which can effectively block external dust from entering the discharge bin 110 to contaminate the filter cake and improve the finished product quality of the positive electrode material.

[0051] As Figure 2 and Figure 4 shown, in one embodiment, the discharge bin 110 further includes a spreading plate 117. The spreading plate 117 is located at the opening 1153. One side of the spreading plate 117 is connected to the second straight plate 112, and the side of the spreading plate 117 away from the second straight plate 112 is arranged close to the conveyor belt 121.

[0052] In this embodiment, since the spreading plate 117 is arranged at the opening 1153 formed between the discharge bin 110 and the conveyor belt 121, and the side of the spreading plate 117 away from the second straight plate 112 is arranged close to the conveyor belt 121, the filter cake can be spread into a preset thickness, so as to cooperate with the conveyor belt 121 to realize quantitatively and evenly inputting the filter cake into the drying device 300 for drying.

[0053] As Figure 4 shown, further, the discharge bin 110 further includes an adjusting assembly 118. The adjusting assembly 118 is respectively connected to the spreading plate 117 and the second straight plate 112, and is used to adjust the relative positions of the spreading plate 117 and the second straight plate 112 in a preset direction, and the preset direction is perpendicular to the conveying direction of the conveyor belt 121.

[0054] In this embodiment, the spreading plate 117 and the second straight plate 112 are connected by the adjusting assembly 118, so that the relative positions of the spreading plate 117 and the second straight plate 112 in the direction perpendicular to the conveying direction of the conveyor belt 121 can be adjusted. In this way, the conveying amount of the filter cake can be adjusted according to the requirements of the subsequent process (the material formed after drying the filter cake will enter the roasting process).

[0055] As Figure 4As shown, in a specific embodiment, the adjusting assembly 118 includes a threaded fastener 1181 and a nut 1182. A first waist-shaped hole 1121 penetrating the second straight plate 112 is provided, and a second waist-shaped hole 1171 penetrating the material laying plate 117 is provided. The length direction of the first waist-shaped hole 1121 and the length direction of the second waist-shaped hole 1171 are both perpendicular to the conveying direction of the conveyor belt 121. The screw rod of the threaded fastener 1181 passes through the first waist-shaped hole 1121 and the second waist-shaped hole 1171 and is threadedly connected to the nut 1182.

[0056] Exemplarily, the threaded fastener 1181 can be selected from elements with a screw rod such as bolts, screws, and screws.

[0057] It should be noted that when using the adjusting assembly 118, exemplarily, first loosen and disassemble the nut 1182 from the screw rod of the threaded fastener 1181, then disassemble the threaded fastener 1181, and then adjust the relative positions of the material laying plate 117 and the second straight plate 112 in a preset direction. Then, pass the screw rod of the threaded fastener 1181 through the first waist-shaped hole 1121 and the second waist-shaped hole 1171 and thread it with the nut 1182. In this way, the relative positions of the material laying plate 117 and the second straight plate 112 in the preset direction are adjusted.

[0058] In another specific embodiment, the adjusting assembly 118 includes a guide rail, a slider, and a threaded fastener 1181. The guide rail is connected to the second straight plate 112, the slider is connected to the material laying plate 117 and is slidably connected to the guide rail. The screw rod of the threaded fastener 1181 passes through the material laying plate 117 and abuts against the second straight plate 112 to limit the relative sliding of the material laying plate 117 and the second straight plate 112. In this way, the relative positions of the material laying plate 117 and the second straight plate 112 in a preset direction can also be adjusted.

[0059] As Figure 1 and Figure 2 shown, in an embodiment, the conveying device 100 further includes a material guiding bin 130. The material guiding bin 130 and the conveyor belt 121 jointly define a material guiding channel. One end of the material guiding channel is communicated with the opening 1153, and the end of the material guiding channel far from the opening 1153 is communicated with the drying device 300.

[0060] In this embodiment, since the material guiding bin 130 and the conveyor belt 121 jointly define a material guiding channel, one end of the material guiding channel is communicated with the opening 1153, and the end of the material guiding channel far from the opening 1153 is communicated with the drying device 300. In this way, the material guiding bin 130 can introduce the filter cake into the drying device 300, realizing the transitional connection between the conveyor belt 121 and the drying device 300.

[0061] As Figure 2As shown, further, the material guiding bin 130 includes a dust-proof section 131, a bending section 132, and a blanking section 133. The bending section 132 is connected between the dust-proof section 131 and the blanking section 133. The conveyor belt 121, the dust-proof section 131, the bending section 132, and the blanking section 133 jointly define a material guiding channel. The dust-proof section 131 is disposed near the opening 1153, and the blanking section 133 is connected to the drying device 300.

[0062] In this embodiment, through the arrangement of the dust-proof section 131, the dust-proof effect on the filter cake can be achieved, and the risk of external dust contaminating the filter cake can be reduced. Through the arrangement of the blanking section 133, it is convenient to input the filter cake into the drying device 300 for drying treatment. Through the arrangement of the bending section 132, the transitional connection between the dust-proof section 131 and the blanking section 133 is realized, so that the filter cake can smoothly enter the drying device 300.

[0063] As Figure 2 and Figure 3 shown, in one embodiment, the conveying mechanism 120 further includes a plurality of rollers 122. The plurality of rollers 122 are arranged at intervals along the conveying direction of the conveyor belt 121, and the outer peripheral side of each roller 122 is supported on the side of the conveyor belt 121 facing away from the discharging bin 110.

[0064] In this embodiment, since a plurality of rollers 122 are arranged at intervals along the conveying direction of the conveyor belt 121, and the outer peripheral side of each roller 122 is supported on the side of the conveyor belt 121 facing away from the discharging bin 110, this plays a supporting role for the conveyor belt 121, increases the load-bearing capacity of the conveyor belt 121, and thus can better cooperate with the discharging bin 110 to temporarily store and convey the filter cake.

[0065] As Figure 2 shown, in one embodiment, the conveying mechanism 120 further includes a driving wheel 123 and a driven wheel 124. One end of the conveyor belt 121 is sleeved on the driving wheel 123, and the other end of the conveyor belt 121 is sleeved on the driven wheel 124. The driving wheel 123 can rotate under the drive of a driving member such as a motor or a motor, so as to drive the conveyor belt 121 to convey the filter cake into the drying device 300.

[0066] As Figure 1 and Figure 2 shown, in a second aspect, an embodiment of the present application provides a filtering and drying device 1000, including a pressure filtering device 200, a drying device 300, a dust removing device 400, and the conveying device 100 mentioned in any of the above embodiments. The feed inlet 1151 is communicated with the pressure filtering device 200, the opening 1153 is communicated with the drying device 300, and the dust removing device 400 is communicated with the drying device 300.

[0067] As Figure 1 and Figure 2As shown, in one embodiment, the filter press device 200 includes a frame 210, a filter element 220, and a pressing element 230. The filter element 220 is telescopically connected to the frame 210, and the pressing element 230 is slidably disposed on the frame 210 for squeezing the filter element 220 to filter and wash the material. The drying device 300 selects a paddle drying device, and the dust removal device 400 selects a bag dust removal device. The bag dust removal device includes an air inlet pipe 410, a bag dust removal main body 420, a compressed air storage tank 430, a discharge valve 440, a return pipe 450, an air outlet pipe 460, and an induced draft fan 470. The air inlet pipe 410, the air outlet pipe 460, and the return pipe 450 are respectively communicated with the interior of the bag dust removal main body 420. The discharge valve 440 is disposed on the return pipe 450 to control the on-off of the return pipe 450, and the compressed air storage tank 430 is disposed inside the bag dust removal main body 420.

[0068] Among them, the opening 1153 formed between the silo and the conveyor belt 121 is communicated with the input port 340 of the paddle drying device. The output port 350 of the paddle drying device is used to output the dried material. The steam inlet 310 of the paddle drying device is used to input steam, and the steam outlet 320 of the paddle drying device is used to output steam. The air inlet pipe 410 is communicated with the condensate outlet 330 of the paddle drying device (the condensate outlet 330 is not shown in the drawings). One end of the return pipe 450 away from the bag dust removal main body 420 is communicated with the interior of the paddle drying device.

[0069] In this embodiment, compared with the conventional flash drying device, the paddle drying device uses 0.7 Mpa steam as the drying heat source, has the characteristics of small tail gas emission and low tail gas temperature, and does not need to be equipped with a hot blast stove to provide heat energy like the flash drying device. Therefore, it is 30% more energy-saving than the flash drying device, the floor area is reduced by 20%, and the cost investment is reduced by 20%.

[0070] In summary, when using the filtration and drying equipment 1000 provided in this embodiment, the slurry made in the pulping process is input into the pressure filtration device 200. The pressing member 230 slides relative to the frame 210 and approaches the filtering member 220, and cooperates with the filtering member 220 to squeeze and filter the slurry. Then, the pressing member 230 slides relative to the frame 210 and moves away from the filtering member 220. The high-moisture filter cake formed after extrusion filtration enters the inside of the discharge bin 110 through the feed inlet 1151 and falls onto the conveyor belt 121 through the discharge outlet 1152. The conveyor belt 121 conveys the filter cake along its conveying direction. When the filter cake passes through the opening 1153, it is spread into a preset thickness by the spreading plate 117, and then enters the paddle drying device through the input port 340 under the guidance of the guide bin 130. Steam is introduced into the paddle drying device through the steam inlet 310, so that the paddles in the paddle drying device exchange heat with the filter cake. The water vapor generated by drying is pumped to the bag dust removal main body 420 through the steam outlet 320 by the air inlet pipe 410, enters the induced draft fan 470 through the air outlet pipe 460 and is discharged, and the powdery material brought by the water vapor is back-blown by the compressed air storage tank 430 and returns to the paddle drying device through the return pipe 450 for continuous drying treatment. At the same time, the steam condensate in the paddle drying device 300 is discharged through the condensate outlet 330, and the dried material is discharged from the output port 350 and enters the roasting process.

[0071] It can be understood that since the filtration and drying equipment 1000 provided in this embodiment has the conveying device 100 in any of the above embodiments, it has all the beneficial effects of the conveying device 100, and will not be listed one by one here.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application.

Claims

1. A conveying device, characterized in that: Applicable to a filtering and drying device having a filter press device (200) and a drying device (300), the conveying device comprising: A discharge bin (110) comprises a first straight plate (111), a second straight plate (112), a first inclined plate (113) and a second inclined plate (114); the first straight plate (111) is connected between the first inclined plate (113) and the second inclined plate (114); the second straight plate (112) is arranged opposite to the first straight plate (111) and connected between the first inclined plate (113) and the second inclined plate (114); the first straight plate (111), the second straight plate (112), the first inclined plate (113) and the second inclined plate (114) jointly define a feed port (1151) and a discharge port (1152) which are connected to each other; the feed port (1151) is connected to the filter press device (200) and is used to receive filter cake output by the filter press device (200); The conveying mechanism (120) comprises a conveyor belt (121), wherein the conveyor belt (121) is located at the discharge port (1152), and the conveyor belt (121) and the second straight plate (112) jointly define an opening (1153) communicating with the discharge port (1152), and the conveyor belt (121) is used to input the filter cake into the drying device (300) through the opening (1153), and a side of the first inclined plate (113) facing away from the second inclined plate (114) and a side of the second inclined plate (114) facing away from the first inclined plate (113) are both arranged at a preset angle α with the conveyor belt (121), satisfying the following: 0°<α<90°.

2. The conveying device according to claim 1, characterized in that Satisfies: 75°≤α<90°.

3. The conveying device according to claim 1, characterized in that: The unloading bin (110) also includes a flexible dustproof plate (116), which is arranged along the circumference of the discharge port (1152) and is respectively connected to the first straight plate (111), the first inclined plate (113) and the second inclined plate (114), and the side of the flexible dustproof plate (116) away from the discharge port (1152) is in line contact or surface contact with the conveyor belt (121).

4. The conveying device according to claim 1, characterized in that The unloading bin (110) further includes a material laying plate (117) located at the opening (1153), one side of the material laying plate (117) is connected to the second straight plate (112), and the side of the material laying plate (117) away from the second straight plate (112) is arranged close to the conveyor belt (121).

5. The conveying device according to claim 4, characterized in that: The unloading bin (110) also includes an adjustment component (118), which is respectively connected to the material laying plate (117) and the second straight plate (112), and is used to adjust the relative positions of the material laying plate (117) and the second straight plate (112) in a preset direction, and the preset direction is perpendicular to the conveying direction of the conveyor belt (121).

6. The conveying device according to claim 5, characterized in that The adjustment component (118) includes a threaded fastener (1181) and a nut (1182). The second straight plate (112) is provided with a first waist hole (1121) passing through it, and the material laying plate (117) is provided with a second waist hole (1171) passing through it. The length direction of the first waist hole (1121) and the length direction of the second waist hole (1171) are both perpendicular to the conveying direction of the conveyor belt (121). The screw of the threaded fastener (1181) is passed through the first waist hole (1121) and the second waist hole (1171), and is threadedly connected to the nut (1182).

7. The conveying device according to any one of claims 1 to 6, characterized in that The conveying device also includes a material guide bin (130), and the material guide bin (130) and the conveyor belt (121) jointly define a material guide channel, one end of the material guide channel is connected to the opening (1153), and the end of the material guide channel away from the opening (1153) is connected to the drying device (300).

8. The conveying device according to claim 7, characterized in that The material guide bin (130) comprises a dustproof section (131), a curved section (132) and a material discharge section (133); the curved section (132) is connected between the dustproof section (131) and the material discharge section (133); the conveyor belt (121), the dustproof section (131), the curved section (132) and the material discharge section (133) jointly define the material guide channel; the dustproof section (131) is arranged close to the opening (1153); and the material discharge section (133) is connected to the drying device (300).

9. The conveying device according to any one of claims 1 to 6, characterized in that The conveying mechanism (120) further comprises a plurality of rollers (122) arranged at intervals along the conveying direction of the conveyor belt (121), and the outer peripheral side of each roller (122) is supported on a side of the conveyor belt (121) facing away from the discharge bin (110).

10. A filtering and drying device, characterized in that: It comprises a filter press device (200), a drying device (300), a dust removal device (400) and a conveying device according to any one of claims 1 to 9, wherein the feed port (1151) is connected to the filter press device (200), the opening (1153) is connected to the drying device (300), and the dust removal device (400) is connected to the drying device (300).

Images