Flushing device

Abstract

This application discloses a rinsing device, comprising: a rinsing assembly for rinsing desulfurized gypsum; a conveying assembly disposed on the conveying path of the conveying assembly and located between the inlet and outlet ends; and a filtering assembly comprising a filter cloth, on which the desulfurized gypsum is placed, and which covers the outside of the conveying path of the conveying assembly; the conveying assembly is capable of moving the filter cloth. This application discloses a rinsing device to address the problem of high chloride ion concentration in existing desulfurized gypsum affecting its quality.

Description

Technical Field

[0001] This application relates to the field of desulfurized gypsum technology, and more specifically, to a flushing device. Background Technology

[0002] Currently, the quality improvement process for desulfurized gypsum mainly relies on a two-stage dewatering device. In the first step, the desulfurized gypsum slurry flows through pipelines into a wastewater hydrocyclone station (primary dewatering device) for hydrocyclone separation. During this process, gypsum with a water content of approximately 50% is separated, while the separated water enters the gypsum overflow slurry tank. Most of this separated water is directly reused in the power plant's desulfurization system, with only a small portion being discharged into wastewater treatment facilities. After preliminary treatment, it is then transported to the thermal power plant's wastewater treatment plant for further treatment and reuse. Subsequently, the gypsum with approximately 50% water content is sent to a vacuum belt dewatering machine (secondary dewatering device) for secondary dewatering. In this stage, low-quality gypsum is produced, while the separated wastewater is directly reused in the thermal power plant's desulfurization system through pipelines. Due to the low-quality gypsum produced, its comprehensive utilization rate is low given the downturn in the construction industry, resulting in a large amount of low-quality desulfurized gypsum being stockpiled. This not only occupies a large amount of land resources, but may also cause harmful substances to seep into the soil and groundwater due to rainwater erosion, posing a potential threat to the ecological environment.

[0003] During the production of desulfurized gypsum, the gypsum often contains a significant amount of impurities, especially chloride ions. Chloride ions migrate within the gypsum slurry during the hydration reaction, eventually combining with calcium ions on the surface of the gypsum mortar to form calcium chloride. Calcium chloride readily absorbs moisture, causing the gypsum mortar to become damp and yellow during use. This unstable quality affects its application in building materials, agriculture, and other fields. This not only wastes resources but also limits the improvement of economic benefits.

[0004] Therefore, a flushing device is needed to solve the above problems. Utility Model Content

[0005] In view of this, the purpose of this application is to propose a flushing device to solve the problem of high chloride ion concentration in existing desulfurized gypsum affecting its quality.

[0006] To achieve the above objectives, this application provides a rinsing device comprising:

[0007] A flushing assembly for flushing desulfurized gypsum;

[0008] A conveying assembly, wherein the rinsing assembly is disposed on the conveying path of the conveying assembly and is located between the feed end and the discharge end of the conveying assembly;

[0009] A filter assembly includes a filter cloth, on which the desulfurized gypsum is located, and the filter cloth covers the outside of the conveying path of the conveying assembly; the conveying assembly is capable of moving the filter cloth.

[0010] Optionally, the flushing assembly includes a flushing tank and a liquid supply pump. The flushing tank is disposed on the conveying path of the conveying assembly. The flushing tank includes an inlet and an outlet. The liquid supply pump is used to provide flushing liquid to the inlet, and the outlet is used to flush the desulfurized gypsum.

[0011] Optionally, the outlet is an overflow outlet.

[0012] Optionally, the rinsing assembly further includes a support frame, wherein the rinsing tank spans the conveying path of the conveying assembly, and the support frame provides support for the rinsing tank.

[0013] Optionally, the liquid supply pump includes a pump body, a liquid supply pipe, and multiple nozzles. The inlet and outlet of the pump body are connected to the liquid supply source and the liquid supply pipe, respectively. The multiple nozzles are distributed sequentially at intervals along the axial direction on the liquid supply pipe, and the nozzles are used to supply liquid to the flushing tank.

[0014] Optionally, the conveying assembly includes a drive wheel, a driven wheel, and a conveyor belt. The drive wheel and the driven wheel are opposite to each other and spaced apart. The conveyor belt forms a transmission connection between the drive wheel and the driven wheel and is capable of reciprocating.

[0015] Optionally, the rinsing device further includes a conveyor belt rinsing component for rinsing the side surface of the conveyor belt used for transporting materials.

[0016] Optionally, the filter assembly further includes a first guide wheel, a second guide wheel, a plurality of intermediate guide wheels, and a tensioning wheel. The first guide wheel and the second guide wheel are located outside the driving wheel and the driven wheel, respectively. The plurality of intermediate guide wheels are arranged at intervals between the first guide wheel and the second guide wheel. The filter cloth is arranged around the first guide wheel, the plurality of intermediate guide wheels, and the second guide wheel in sequence to form a closed structure. The tensioning wheel is used to adjust the tension of the filter cloth.

[0017] Optionally, the first guide wheel is positioned higher than the drive wheel, and the second guide wheel is positioned lower than the driven wheel. The filter assembly further includes a limiting roller located between the first guide wheel and the feed end. The limiting roller is used to make the filter cloth adhere to the conveyor belt.

[0018] Alternatively, the rinsing device may further include an inner rinsing member and an outer rinsing member, the inner rinsing member and the outer rinsing member being located on opposite sides of the filter cloth, the inner rinsing member being used to rinse the surface of the filter cloth facing the conveyor belt, and the outer rinsing member being used to rinse the surface of the filter cloth facing away from the conveyor belt.

[0019] As can be seen from the above, the flushing device provided in this application has the following advantages compared with the prior art: by flushing the desulfurized gypsum, it can remove impurities and surface dust from the desulfurized gypsum, as well as chloride ions, significantly improving the purity and quality of the desulfurized gypsum. Under the premise of ensuring safe and stable production, it reduces storage risks, decreases gypsum disposal costs, lowers production costs, ensures stable quality of each batch of desulfurized gypsum, improves product consistency and reliability, and meets the needs of high-end markets such as building materials and agriculture. Attached Figure Description

[0020] The above features and technical advantages of this application will become clearer and easier to understand from the following description of its embodiments in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the rinsing device used in a specific embodiment of this application.

[0022] The attached figures are labeled as follows:

[0023] 1. Rinsing assembly; 2. Feeding end; 3. Rinsing component; 4. Conveying assembly; 41. Drive wheel; 42. Driven wheel; 43. Conveyor belt; 5. Discharge end; 6. Inner rinsing port; 7. Outer rinsing port; 8. Conveyor belt rinsing component; 9. Filtering assembly; 91. Filter cloth; 92. Tensioning wheel; 93. Limiting roller; 94. First guide wheel; 95. Second guide wheel; 96. Intermediate guide wheel. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] Figure 1 This is a schematic diagram of the rinsing device used in a specific embodiment of this application. Figure 1 As shown, the rinsing device includes a rinsing component 1, a conveying component 4, and a filtering component 9.

[0026] The rinsing assembly 1 is used to rinse the desulfurized gypsum; the rinsing assembly 1 is set on the conveying path of the conveying assembly 4 and is located between the feed end 2 and the discharge end 5 of the conveying assembly 4; the filter assembly 9 includes a filter cloth 91, the desulfurized gypsum is located on the filter cloth 91, and the filter cloth 91 covers the outside of the conveying path of the conveying assembly 4; the conveying assembly 4 can drive the filter cloth 91 to move.

[0027] Feed is supplied from feed end 2. The desulfurized gypsum is placed on the filter cloth 91 of the filter assembly 9. The conveying assembly 4 simultaneously conveys the filter cloth 91 and the desulfurized gypsum. When passing through the rinsing assembly 1, the rinsing assembly 1 rinses the desulfurized gypsum. Dust is washed away from the desulfurized gypsum by the rinsing water flow, and impurities, chloride ions, etc. are dissolved and then washed away from the desulfurized gypsum by the rinsing water flow. The cleaned desulfurized gypsum is discharged from the discharge end 5 and detached from the filter assembly 9 and the conveying assembly 4. Dust, impurities, chloride ions, etc. are filtered and cleaned by the filter cloth 91.

[0028] In one embodiment of this application, the conveying path includes an upper segment and a lower segment, which are in dynamic change. The upper segment and the lower segment enclose a closed path. The feed end 2 is located above the upper segment, and the discharge end 5 is located at the point where the upper and lower segments change.

[0029] In one embodiment of this application, the filter cloth 91 includes an upper cloth segment and a lower cloth segment, which are in dynamic change. The upper cloth segment and the lower cloth segment enclose each other to form a closed path. The upper cloth segment is attached to the upper section, and the lower cloth segment is at a certain distance from the lower section.

[0030] In one embodiment of this application, at least one rinsing element 3 is provided between the rinsing assembly 1 and the discharge end 5. The rinsing element 3 is used to spray the desulfurized gypsum after it has been rinsed by the rinsing assembly, so that the rinsing liquid carrying impurities, dust and chloride ions flows to both sides of the filter cloth 91 and quickly separates from the desulfurized gypsum.

[0031] The aforementioned rinsing device effectively removes impurities and surface dust from the desulfurized gypsum, as well as chloride ions, significantly improving its purity and quality. This reduces storage risks, gypsum disposal costs, and production costs while ensuring safe and stable production. It also ensures consistent quality for each batch of desulfurized gypsum, enhancing product consistency and reliability, and meeting the demands of high-end markets such as building materials and agriculture.

[0032] Optionally, the rinsing assembly 1 includes a rinsing tank and a liquid supply pump. The rinsing tank is located on the conveying path of the conveying assembly 4. The rinsing tank includes an inlet and an outlet. The liquid supply pump is used to supply rinsing liquid to the inlet; the outlet is used to rinse the desulfurized gypsum. The liquid supply pump supplies water to the rinsing tank through the inlet. After passing through the buffer of the rinsing tank, the water outlet of the rinsing tank is used to rinse the desulfurized gypsum.

[0033] In one embodiment of this application, the rinsing tank is made of a corrosion-resistant material.

[0034] In one embodiment of this application, the rinsing box is located above the upper section of the conveying path and spans across the conveying path, and the width of the outlet can cover the width of the desulfurized gypsum to avoid the existence of rinsing blind spots.

[0035] The rinsing tank is positioned at a certain distance from the detached plaster, and optionally, the outlet is an overflow port. Using an overflow port as the outlet avoids rinsing blind spots and significantly improves rinsing efficiency.

[0036] In one embodiment of this application, the inlet and outlet are both located above each other in the rinsing tank, and the opposite side walls of the rinsing tank have different heights, with the overflow outlet located on the side with the lower height.

[0037] To ensure the stable operation of the rinsing box, the rinsing assembly 1 may optionally include a support frame. The rinsing box spans the conveying path of the conveying assembly 4, and the support frame provides support for the rinsing box. The support frame allows the rinsing box to span the desulfurized gypsum, providing stable support for the rinsing box.

[0038] In one embodiment of this application, the rinsing box includes a box body and welded edges respectively disposed at opposite ends of the box body. The support frame includes multiple support legs respectively located on opposite sides of the conveying assembly 4. Support legs on the same side can be connected together by a connecting plate, and support legs on different sides can be connected together by a connecting rod. The welded edges of the rinsing box are welded to the support plate.

[0039] In one embodiment of this application, the support leg can be made of a lifting structure. The position of the flushing box can be adjusted by adjusting the lifting structure according to the height of the desulfurized gypsum, thereby adjusting the flushing height and flushing force of the flushing box.

[0040] Optionally, the liquid supply pump includes a pump body, a liquid supply pipe, and multiple nozzles. The inlet and outlet of the pump body are connected to the liquid supply source and the liquid supply pipe, respectively. The multiple nozzles are distributed sequentially at intervals along the axial direction on the liquid supply pipe, and the nozzles are used to supply liquid to the flushing tank. The pump body supplies flushing liquid from the liquid supply source to the liquid supply pipe. The liquid supply source includes, but is not limited to, a water source. The liquid supply pipe typically extends along the length of the flushing tank. The multiple nozzles simultaneously supply water to the flushing tank to meet the liquid discharge requirements of the flushing tank.

[0041] The supply pump and the rinsing tank are also at a certain distance. To avoid turbulence in the rinsing tank during supply of liquid, which would affect the rinsing effect, multiple baffles are installed inside the rinsing tank, dividing it into several relatively independent chambers. The number of nozzles is determined based on the number of chambers.

[0042] Optionally, the conveying assembly 4 includes a drive wheel 41, a driven wheel 42, and a conveyor belt 43. The drive wheel 41 and the driven wheel 42 are arranged opposite each other and spaced apart. The conveyor belt 43 forms a transmission connection between the drive wheel 41 and the driven wheel 42 and is capable of reciprocating movement. The drive wheel 41 serves as the power source, driving the conveyor belt 43 in continuous cyclic motion. The driven wheel 42 rotates following the rotation of the drive wheel 41, ensuring the smooth and continuous operation of the conveyor belt. The section of the conveyor belt 43 above the axis of the drive wheel 41 and the driven wheel 42 is the upper section of the conveying path, and the section of the conveyor belt 43 below the axis of the drive wheel 41 and the driven wheel 42 is the lower section of the conveying path. The feed end 2 is located near the drive wheel 41, and the discharge end 5 is located near the driven wheel 42. By using the above-mentioned conveying assembly 4, the stable and efficient operation of the conveyor belt 43 and the smooth conveying of desulfurized gypsum are ensured.

[0043] Optionally, the rinsing device further includes a conveyor belt rinsing component 8, which is used to rinse the side surface of the conveyor belt 43 used for transporting materials. The conveyor belt rinsing component 8 effectively rinses the side surface of the conveyor belt 43 used for transporting materials, preventing impurities from accumulating on the conveyor belt 43 and affecting its normal use, thus ensuring smooth conveying.

[0044] Optionally, the filter assembly 9 further includes a first guide wheel 94, a second guide wheel 95, a plurality of intermediate guide wheels 96, and a tensioning wheel 92. The first guide wheel 94 and the second guide wheel 95 are located outside the drive wheel 41 and the driven wheel 42, respectively. The plurality of intermediate guide wheels 96 are arranged at intervals between the first guide wheel 94 and the second guide wheel 95. The filter cloth 91 is arranged around the first guide wheel 94, the plurality of intermediate guide wheels 96, and the second guide wheel 95 in sequence to form a closed structure. The tensioning wheel 92 is used to adjust the tension of the filter cloth 91. The first guide wheel 94 and the second guide wheel 95 are located above the axes of the drive wheel 41 and the driven wheel 42, respectively, and the filter cloth 91 above the first guide wheel 94 and the second guide wheel 95 is the upper section. The plurality of intermediate guide wheels 96 and the tensioning wheel 92 are located below the axes of the drive wheel 41 and the driven wheel 42, respectively, and the filter cloth 91 below the first guide wheel 94 and the second guide wheel 95 is the lower section. The tensioning wheel 92 ensures that the filter cloth 91 is in a relatively taut state. By using the above-mentioned filter assembly 9, it is possible to ensure the synchronous operation of the filter cloth 91 and the conveyor belt 43, while reducing the excessive resistance applied by the filter cloth 91 to the conveyor belt 43.

[0045] To ensure the fit between the upper section of the filter cloth 91 and the upper section of the conveyor belt 43, optionally, the first guide wheel 94 is positioned higher than the drive wheel 41, and the second guide wheel 95 is positioned lower than the driven wheel 42. The filter assembly 9 also includes a limiting roller 93, located between the first guide wheel 94 and the feed end 2. The limiting roller 93 is used to bring the filter cloth 91 into contact with the conveyor belt 43. The filter cloth 91 is inclined above the conveyor belt 43, and the limiting roller 93 is located between the first guide wheel 94 and the feed end 2. The limiting roller 93 presses down on the filter cloth 91, and under the tensioning action of the limiting roller 93 and the second guide wheel 95, the upper section of the filter cloth 91 is effectively fitted with the upper section of the conveyor belt 43.

[0046] Alternatively, the rinsing device may further include an inner rinsing element 6 and an outer rinsing element 7, which are located on opposite sides of the filter cloth 91. The inner rinsing element 6 is used to rinse the surface of the filter cloth 91 facing the conveyor belt 43, and the outer rinsing element 7 is used to rinse the surface of the filter cloth 91 facing away from the conveyor belt 43. The inner rinsing element 6 and the outer rinsing element 7 are typically located in the lower section of the filter cloth 91 to effectively rinse the filter cloth 91 and prevent impurities from accumulating on the filter cloth 91, thus affecting the rinsing effect of the desulfurized gypsum.

[0047] The following section further describes the usage process of the rinsing device.

[0048] When feeding material at inlet 2, the liquid supply pump starts, supplying flushing liquid to the flushing tank through the liquid supply pipe and nozzles. The desulfurized gypsum is placed on filter cloth 91, and the upper section of conveyor belt 43 simultaneously transports filter cloth 91 and desulfurized gypsum. As it passes through the flushing tank, the flushing liquid overflows, rinsing the desulfurized gypsum under the action of gravity, impact, and pressure. Dust is washed away from the desulfurized gypsum by the flushing water flow, and impurities and chloride ions are dissolved and then washed away by the flushing water flow. The cleaned desulfurized gypsum detaches from filter cloth 91 and conveyor belt 43 from outlet 5, while dust, impurities, and chloride ions are filtered and cleaned by filter cloth 91. Conveyor belt flushing component 8 effectively flushes one side of the material transported by conveyor belt 43. Inner flushing component 6 and outer flushing component 7 effectively flush filter cloth 91.

[0049] As can be seen from the above description and practice, the flushing device provided in this application has the following advantages compared with the prior art: By flushing the desulfurized gypsum, it can remove impurities and surface dust from the desulfurized gypsum, as well as chloride ions, significantly improving the purity and quality of the desulfurized gypsum. Under the premise of ensuring safe and stable production, it reduces storage risks, decreases gypsum disposal costs, lowers production costs, ensures the stable quality of each batch of desulfurized gypsum, improves product consistency and reliability, and meets the needs of high-end markets such as building materials and agriculture.

[0050] Those skilled in the art should understand that the above description is merely a specific embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the scope of this application should be included within the protection scope of this application.

Claims

1. A rinsing device, characterized in that include: A flushing assembly for flushing desulfurized gypsum; A conveying assembly, wherein the rinsing assembly is disposed on the conveying path of the conveying assembly and is located between the feed end and the discharge end of the conveying assembly; A filter assembly includes a filter cloth, on which the desulfurized gypsum is located, and the filter cloth covers the outside of the conveying path of the conveying assembly; the conveying assembly is capable of moving the filter cloth.

2. The rinsing device according to claim 1, characterized in that: The flushing assembly includes a flushing tank and a liquid supply pump. The flushing tank is located on the conveying path of the conveying assembly. The flushing tank includes an inlet and an outlet. The liquid supply pump is used to provide flushing liquid to the inlet. The outlet is used to flush the desulfurized gypsum.

3. The rinsing device according to claim 2, characterized in that: The outlet is an overflow outlet.

4. The rinsing device according to claim 3, characterized in that: The rinsing assembly further includes a support frame, wherein the rinsing tank is positioned across the conveying path of the conveying assembly, and the support frame provides support for the rinsing tank.

5. The rinsing device according to claim 4, characterized in that: The liquid supply pump includes a pump body, a liquid supply pipe, and multiple nozzles. The inlet and outlet of the pump body are connected to the liquid supply source and the liquid supply pipe, respectively. The multiple nozzles are distributed sequentially at intervals along the axial direction on the liquid supply pipe. The nozzles are used to supply liquid to the flushing tank.

6. The flushing device according to any one of claims 1 to 5, characterized in that: The conveying assembly includes a drive wheel, a driven wheel, and a conveyor belt. The drive wheel and the driven wheel are opposite to each other and spaced apart. The conveyor belt forms a transmission connection between the drive wheel and the driven wheel and is capable of reciprocating.

7. The rinsing device according to claim 6, characterized in that: The rinsing device further includes a conveyor belt rinsing component, which is used to rinse the side surface of the conveyor belt used for transporting materials.

8. The rinsing device according to claim 7, characterized in that: The filter assembly further includes a first guide wheel, a second guide wheel, a plurality of intermediate guide wheels, and a tensioning wheel. The first guide wheel and the second guide wheel are located outside the driving wheel and the driven wheel, respectively. The plurality of intermediate guide wheels are arranged at intervals between the first guide wheel and the second guide wheel. The filter cloth is arranged around the first guide wheel, the plurality of intermediate guide wheels, and the second guide wheel in sequence to form a closed structure. The tensioning wheel is used to adjust the tension of the filter cloth.

9. The rinsing device according to claim 8, characterized in that: The first guide wheel is positioned higher than the drive wheel, and the second guide wheel is positioned lower than the driven wheel. The filter assembly further includes a limiting roller, which is located between the first guide wheel and the feed end. The limiting roller is used to make the filter cloth adhere to the conveyor belt.

10. The rinsing device according to claim 9, characterized in that: The rinsing device further includes an inner rinsing component and an outer rinsing component, which are located on opposite sides of the filter cloth. The inner rinsing component is used to rinse the surface of the filter cloth facing the conveyor belt, and the outer rinsing component is used to rinse the surface of the filter cloth facing away from the conveyor belt.

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