Vacuum dehydration belt conveyor

Abstract

The utility model discloses a vacuum dewatering belt conveyor, which belongs to the technical field of coal dewatering and comprises a frame, a driving roller and a driven roller are respectively mounted at two ends of the frame, and an outer-layer belt and an inner-layer belt are driven between the driving roller and the driven roller. A plurality of dewatering holes are formed in the surface of the outer-layer adhesive tape; raised shoulders distributed at intervals are arranged on the surface, facing the outer-layer adhesive tape, of the inner-layer adhesive tape, and a vent hole is formed between every two adjacent raised shoulders; and vacuum chambers which are distributed between the upper layer and the lower layer of the double-layer dewatering adhesive tape group and are communicated with the vent holes are also mounted in the rack. The vacuum dehydration belt conveyor can be directly transformed on the basis of a traditional belt conveyor, the transformation cost is low, and the transformed equipment has a coal transportation function and a coal dehydration function; compared with a common vibrating screen and roller screen dewatering mode, the vacuum dewatering belt conveyor has the advantages of being small in occupied area, small in height space, small in investment, easy to install, maintain, operate and manage and the like.

Description

Technical Field

[0001] This utility model relates to the field of coal dewatering technology, specifically a vacuum dewatering belt conveyor. Background Technology

[0002] In underground coal mining, water seepage often occurs during the coal extraction process. This water seeps into the mined coal, posing a significant safety hazard to underground coal transportation and hoisting. To eliminate this safety hazard, the current main solution is to install vibrating dewatering screens and roller screens in the transportation roadways for dewatering.

[0003] The main problems with installing vibrating dewatering screens and roller screens during transportation are as follows:

[0004] First, it occupies a large area. The belt conveyor head, head chute, dewatering screen, dewatering screen under-chute, and transfer belt conveyor tail, plus the equipment installation, maintenance, and lifting equipment, total in height of over ten meters. This makes underground roadway construction and support difficult and costly, and for mines with poor geological conditions, it poses significant safety hazards for roadway construction and support.

[0005] Second, the investment is large. Due to the large area and height of the site, the cost of tunnel development is high; generally, two-stage dehydration is required to achieve the dehydration target, and the equipment is large-scale and expensive.

[0006] Third, the dewatering efficiency is low. Due to the limited processing capacity of the screen, when the instantaneous coal flow rate is large and the moisture content is high, the dewatering target cannot be met.

[0007] Fourth, installation and dismantling are difficult. Because the equipment is large, the transportation from the mine shaft to the installation site is difficult due to the limited space underground, resulting in high costs and long installation periods. The same problems are encountered during major equipment overhaul and dismantling. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a vacuum dehydration belt conveyor that has a small footprint, low modification cost, high dehydration rate, and is easy to install and dismantle.

[0009] The technical solution of this utility model is implemented as follows:

[0010] A vacuum dewatering conveyor belt includes a frame, with a drive roller and a driven roller installed at both ends of the frame, and the drive roller and the driven roller jointly drive a double-layer dewatering conveyor belt assembly.

[0011] The double-layer dewatering tape assembly consists of an outer layer tape and an inner layer tape;

[0012] The outer layer tape has several matrix-distributed dehydration holes on its surface; the inner layer tape has spaced-distributed raised shoulders on its surface facing the outer layer tape, and a vent is provided between each pair of adjacent raised shoulders.

[0013] The machine frame also houses a vacuum chamber located between the upper and lower layers of the double-layer dehydration tape assembly and connected to the ventilation holes.

[0014] Using the above solution, the vacuum dewatering belt conveyor can be directly modified from a traditional belt conveyor at a low cost. The modified equipment has both coal transportation and coal dewatering functions. During coal dewatering, the vacuum chamber is under negative pressure, and the moisture in the coal enters the vacuum chamber sequentially through the dewatering holes and air vents, resulting in high dewatering efficiency. Compared with traditional dewatering processes, this vacuum dewatering belt conveyor requires less investment, is easy to install and maintain, and has simple operation and management.

[0015] In a preferred embodiment of a vacuum dehydration conveyor belt, the end of the raised shoulder facing the outer layer of the conveyor belt is a rounded end.

[0016] In order to improve the fit between the outer and inner tapes using the above solution, the outer tape is lifted by the inner tape's raised shoulder to facilitate flow and dehydration. The raised shoulder has an arc surface, which will improve the fit between the outer and inner tapes when they come into contact.

[0017] In a preferred embodiment of a vacuum dehydration conveyor belt, the dehydration hole is a trumpet-shaped hole with an isosceles trapezoidal cross-section, wherein the diameter of the outward-facing dehydration hole is smaller than its inward-facing diameter; the vent hole is a trumpet-shaped hole with an isosceles trapezoidal cross-section, wherein the diameter of the outward-facing vent hole is smaller than its inward-facing diameter.

[0018] To avoid clogging of the dehydration hole and the vent, the above solution is adopted, and both the dehydration hole and the vent are designed as funnel holes. In this way, impurities are less likely to get stuck in the dehydration hole or the vent, making them less prone to clogging.

[0019] In a preferred embodiment of a vacuum dehydration conveyor belt, the vacuum chamber is funnel-shaped; the top of the vacuum chamber is in contact with the inner layer of conveyor belt through a sealing strip, and the bottom of the vacuum chamber is connected to a vacuum tank located next to the frame.

[0020] The vacuum chamber is connected to the water collection pipe via multiple steel wire hoses, and the water collection pipe is then connected to the vacuum tank.

[0021] The vacuum tank is equipped with a steam-water separator;

[0022] The vacuum tank is also equipped with two or more pneumatic valves.

[0023] The above scheme uses a vacuum tank to provide a vacuum environment and employs a design of a vacuum tank and a gas-water separator to achieve gas, material, and water separation of the extracted water and fine particulate materials, and the water and fine particulate materials are quickly discharged.

[0024] In a preferred embodiment of a vacuum dehydration conveyor belt, guide rollers are installed at both ends of the frame. The two guide rollers open the outer and inner layers of the lower layer of the double-layer dehydration conveyor belt, and two high-pressure air cleaners are installed between the outer and inner layers of the belt, with the two high-pressure air cleaners facing the outer and inner layers of the belt respectively.

[0025] Using the above method, in order to facilitate the cleaning of impurities between the outer and inner layers of the tape, the guide roller opens the outer and inner layers of the lower layer of the double-layer dewatering tape assembly vertically, and two high-pressure air cleaners are used to clean the outer and inner layers of the tape respectively.

[0026] In a preferred embodiment of a vacuum dehydration conveyor belt, an electric brush cleaner is also installed at either end of the frame, and the brush of the electric brush cleaner is always able to act on the surface of the outer layer of conveyor belt.

[0027] Using the above method, in order to facilitate the cleaning of residual coal slag and other debris on the surface of the outer tape, an electric brush cleaner is used to clean it, which can effectively remove residual coal slag and other debris from the surface of the outer tape.

[0028] After adopting the above technical solution, the beneficial effects of this utility model are:

[0029] 1. This vacuum dewatering belt conveyor can be directly modified from a traditional belt conveyor at a low cost. The modified equipment has both coal transportation and coal dewatering functions. During coal dewatering, the vacuum chamber is under negative pressure, and the moisture in the coal enters the vacuum chamber through the dewatering holes and air vents in sequence, resulting in high dewatering efficiency. Compared with vibrating screens and roller screens, this vacuum dewatering belt conveyor requires less floor space and vertical space, making it safer and more convenient to install or dismantle.

[0030] 2. In order to improve the fit between the outer and inner tapes, the inner tape is raised to lift the outer tape, which facilitates flow and dehydration. The raised shoulder is curved, which will improve the fit between the outer and inner tapes when they come into contact.

[0031] 3. To prevent the dehydration hole and the vent from becoming blocked, both the dehydration hole and the vent are designed as funnel holes. This makes it less likely for impurities to get stuck in the dehydration hole or the vent, thus preventing them from becoming blocked.

[0032] 4. The vacuum tank provides a vacuum environment, and the design of the vacuum tank and the gas-water separator enables the separation of gas, material and water from the extracted water and fine particulate materials, and the water and fine particulate materials are quickly discharged.

[0033] 5. To facilitate the cleaning of impurities between the outer and inner tape layers, a guide roller is used to open the outer and inner tape layers of the lower layer of the double-layer dewatering tape assembly, and two high-pressure air cleaners are used to clean the outer and inner tape layers respectively.

[0034] 6. To facilitate the cleaning of residual coal ash and other debris from the surface of the outer tape, an electric brush cleaner can be used to effectively remove residual coal ash and other debris from the surface of the outer tape. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the main structure of a vacuum dehydration belt conveyor.

[0037] Figure 2 This is a top view schematic diagram of the vacuum dehydration belt conveyor.

[0038] Figure 3 For along Figure 2 Schematic diagram of the cross section at point AA;

[0039] Figure 4 For along Figure 3 Schematic diagram of the cross section at point BB;

[0040] Figure 5 This is a partially enlarged structural diagram of the outer layer of adhesive tape.

[0041] Figure 6 For along Figure 5 A cross-sectional view of the location of the dewatering hole;

[0042] Figure 7 for Figure 1 Partial structural diagram;

[0043] Figure 8 for Figure 2 Partial structural diagram;

[0044] The markings in the diagram are: 1-Frame; 2-Driven roller; 3-Driven roller; 4-Outer tape; 5-Inner tape; 6-Dehydration hole; 7-Protruding shoulder; 8-Ventilation hole; 9-Vacuum chamber; 10-Sealing strip; 11-Vacuum tank; 12-Wire hose; 13-Water collection pipe; 14-Pneumatic valve; 15-Guide roller; 16-High-pressure air cleaner; 17-Electric brush cleaner; 18-Motor; 19-Reducer; 20-Coupling. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] like Figures 1 to 4 As shown, a vacuum dehydration conveyor belt includes a frame 1. A drive roller 2 and a driven roller 3 are respectively installed at both ends of the frame 1. The drive roller 2 and the driven roller 3 jointly drive a double-layer dehydration conveyor belt assembly, the length of which typically does not exceed 30 meters. The drive roller 2 is connected to a reducer 19 via a coupling 20, and the reducer 19 is driven to rotate by a motor 18. The double-layer dehydration conveyor belt assembly includes an outer layer conveyor belt 4 and an inner layer conveyor belt 5. The outer layer conveyor belt 4 has a plurality of matrix-distributed dehydration holes 6 on its surface. The inner layer conveyor belt 5 has spaced-distributed raised shoulders 7 on its surface facing the outer layer conveyor belt 4, and a vent hole 8 is provided between each pair of adjacent raised shoulders 7. A vacuum chamber 9 is also installed inside the frame 1, distributed between the upper and lower layers of the double-layer dehydration conveyor belt assembly and connected to the vent holes 8. This vacuum dewatering belt conveyor can be directly modified from a traditional belt conveyor at a low cost. The modified equipment has both coal transportation and coal dewatering functions. During coal dewatering, the vacuum chamber 9 is under negative pressure, and the moisture in the coal enters the vacuum chamber 9 through the dewatering hole 6 and the air vent 8 in sequence, resulting in high dewatering efficiency. Compared with the dewatering processes of vibrating screens and roller screens, this vacuum dewatering belt conveyor has a smaller footprint and height, requires less investment, and is easier to maintain and repair, making it more convenient to install or dismantle.

[0047] like Figure 4 As shown, the end of the raised shoulder 7 facing the outer tape 4 is a rounded end. In order to improve the fit between the outer tape 4 and the inner tape 5, and to facilitate the flow and dehydration of the outer tape 4 by the inner tape 5 passing over the raised shoulder 7, the raised shoulder 7 is made of a rounded surface, which will improve the fit between the outer tape 4 and the inner tape 5 when they come into contact.

[0048] like Figures 4 to 6 As shown, the dehydration hole 6 is a funnel-shaped hole with an isosceles trapezoidal cross-section, where the outward diameter of the dehydration hole 6 is smaller than its inward diameter; the vent hole 8 is also a funnel-shaped hole with an isosceles trapezoidal cross-section, where the outward diameter of the vent hole 8 is smaller than its inward diameter. To prevent clogging of the dehydration hole 6 and the vent hole 8, both are designed as funnel-shaped holes. This makes it less likely for impurities to get stuck in either the dehydration hole 6 or the vent hole 8, thus reducing the likelihood of clogging.

[0049] like Figures 2 to 3 , Figure 7 As shown, the vacuum chamber 9 is funnel-shaped; the top of the vacuum chamber 9 is in contact with the inner layer of adhesive tape 5 through a sealing strip 10, and the bottom of the vacuum chamber 9 is connected to a vacuum tank 11 located next to the frame 1; the vacuum chamber 9 is connected to a water collection pipe 13 through multiple steel wire hoses 12, and the water collection pipe 13 is then connected to the vacuum tank 11; a steam-water separator is installed on the vacuum tank 11; the vacuum tank 11 is also equipped with two or more pneumatic valves 14. The vacuum environment provided by the vacuum tank 11, and the design of the vacuum tank 11 and the steam-water separator, enables the separation of gas, matter, and water from the extracted water and fine particulate matter, and the water and fine particulate matter are quickly discharged.

[0050] like Figure 8 As shown, guide rollers 15 are installed at both ends of the frame 1. The two guide rollers 15 open the outer layer tape 4 and inner layer tape 5 of the lower layer of the double-layer dewatering tape assembly vertically. Two high-pressure air cleaners 16 are installed between the outer layer tape 4 and inner layer tape 5, respectively facing the outer layer tape 4 and inner layer tape 5. In order to facilitate the cleaning of impurities between the outer layer tape 4 and inner layer tape 5, the guide rollers 15 open the outer layer tape 4 and inner layer tape 5 of the lower layer of the double-layer dewatering tape assembly vertically, and the two high-pressure air cleaners 16 clean the outer layer tape 4 and inner layer tape 5 respectively.

[0051] like Figure 8 As shown, an electric brush cleaner 17 is also installed at either end of the frame 1. The brush of the electric brush cleaner 17 can always act on the surface of the outer tape 4. In order to facilitate the cleaning of residual coal slag and other debris on the surface of the outer tape 4, the electric brush cleaner 17 is used to clean it, which can effectively clean the residual coal slag and other debris on the surface of the outer tape 4.

[0052] The working principle of this utility model:

[0053] In application, the motor 18 drives the drive drum 2 to rotate, causing the double-layer dewatering conveyor belt to rotate and transport the coal. During transport, if the coal has a high moisture content and requires dewatering, the vacuum tank 11 provides a vacuum environment. At this time, the vacuum chamber 9 is under negative pressure. The moisture in the coal enters the vacuum chamber 9 through the dewatering holes 6 and the vent holes 8. The design of the vacuum tank 11 and the steam-water separator ensures that the dewatered water and fine particulate matter are separated into gas, material, and water, and the water and fine particulate matter are quickly discharged.

[0054] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vacuum dewatering belt conveyor, comprising a frame, a driving roller and a driven roller respectively installed at two ends of the frame, and a double-layer dewatering belt set jointly driven between the driving roller and the driven roller. characterized in that The double-layer dewatering belt set comprises an outer belt and an inner belt. A plurality of dewatering holes are arranged in a matrix on a belt surface of the outer belt; and a plurality of protruding shoulders are arranged in a space on the belt surface of the inner belt facing the outer belt, and a ventilation hole is arranged between each two adjacent protruding shoulders. A vacuum chamber is further installed in the frame and arranged between the upper and lower layers of the double-layer dewatering belt set and connected with the ventilation hole.

2. The vacuum dehydrating belt conveyor according to claim 1, characterized in that: The end of the protruding shoulder facing the outer belt is a circular arc head.

3. The vacuum dehydrating belt conveyor according to claim 2, characterized in that: The dewatering hole is a horn hole with an isosceles trapezoidal cross section, wherein the diameter of the hole facing outward is smaller than the diameter of the hole facing inward.

4. The vacuum dehydrating belt conveyor according to claim 3, characterized in that: The ventilation hole is a horn hole with an isosceles trapezoidal cross section, wherein the diameter of the hole facing outward is smaller than the diameter of the hole facing inward.

5. The vacuum dehydrating belt conveyor according to claim 1, characterized in that: The vacuum chamber is funnel-shaped; the top of the vacuum chamber is in contact with the inner belt through a sealing strip, and the bottom of the vacuum chamber is connected with a vacuum tank located beside the frame.

6. The vacuum dehydrating belt conveyor according to claim 5, characterized in that: The vacuum chamber is connected with a water collecting pipe through a plurality of steel wire hoses, and the water collecting pipe is further connected with the vacuum tank.

7. The vacuum dehydrating belt conveyor according to claim 6, characterized in that: A steam-water separator is installed on the vacuum tank.

8. The vacuum dehydrating belt conveyor according to claim 7, characterized in that: Two or more pneumatic valves are further installed on the vacuum tank.

9. The vacuum-belt conveyor according to any one of claims 4 to 8, characterized in that: A guide roller is further installed at each end of the frame, and the outer belt and the inner belt of the lower layer of the double-layer dewatering belt set are opened upward and downward by the two guide rollers, and two high-pressure air sweepers are installed between the outer belt and the inner belt, and the two high-pressure air sweepers face the outer belt and the inner belt, respectively.

10. The vacuum dehydrating belt conveyor according to claim 9, characterized in that: An electric brush sweeper is further installed at any end of the frame, and the brush of the electric brush sweeper can always act on the belt surface of the outer belt.

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