A water wash distributor for a rotary vacuum filter

Abstract

The utility model discloses a kind of water washing distributors for extraction carousel vacuum filter, including overflow pipe, flow guide baffle and shunt branch pipe, overflow pipe inside is divided into buffer cavity and water outlet cavity by flow guide baffle, shunt branch pipe import end is connected with water washing main pipe, two end outlet is connected with overflow pipe, and is communicated with buffer cavity, overflow pipe side edge is equipped with overflow port of certain length and is communicated with water outlet cavity, overflow port lower direction is installed with overflow lip, flow guide baffle bottom and overflow pipe inner wall between are equipped with flow guide gap, buffer cavity and water outlet cavity bottom are communicated by flow guide gap. The specific angle plate structure of the present application is designed to be downwardly inclined, which can accelerate the overflow speed of the washing liquid in the overflow pipe and form a fan-shaped spray at a specific angle to the filter cake surface, forming a wide and uniform washing area, thereby achieving uniform washing of the filter cake surface, improving filtration efficiency, reducing phosphorus content of phosphogypsum, and improving phosphorus utilization.

Description

Technical Field

[0001] This utility model relates to the field of chemical machinery and equipment technology, specifically to a water washing distributor for an extraction rotary vacuum filter. Background Technology

[0002] In the production of phosphogypsum, a rotary vacuum filter is commonly used to wash the surface of the filter cake. However, the existing spray cleaning device of the rotary vacuum filter is easily affected by the erosion and wear of solid substances during use, which can cause the inner hole of the inclined overflow lip to become larger or grooves to appear, thus affecting the washing effect. Moreover, the existing cleaning device has a small spray coverage area, making it difficult to wash out some phosphoric acid, resulting in low water washing efficiency. Furthermore, the existing spray cleaning device has a relatively complex structure and high maintenance costs. Summary of the Invention

[0003] The purpose of this invention is to provide a water washing distributor for an extraction rotary vacuum filter, addressing the problems mentioned above.

[0004] The technical solution of this utility model: A water washing distributor for an extraction disc vacuum filter includes an overflow pipe, a flow guide baffle, and branch pipes. The overflow pipe is divided into a buffer chamber and an outlet chamber by the flow guide baffle. The inlet end of the branch pipe is connected to a main water washing pipe, and the outlets at both ends are connected to the overflow pipe and communicate with the buffer chamber. An overflow port of a certain length is opened on the side of the overflow pipe and communicates with the outlet chamber. An overflow lip is installed at an angle downwards on the overflow port. A flow guide gap is provided between the bottom of the flow guide baffle and the inner wall of the overflow pipe. The bottoms of the buffer chamber and the outlet chamber are connected through the flow guide gap.

[0005] The flow guide baffle is installed at an angle inside the overflow pipe, and the top of the flow guide baffle is welded to the inner wall of the overflow pipe.

[0006] The installation tilt angle of the flow guide baffle is 130-140°.

[0007] The bottom of the flow guide baffle is connected to the inner wall of the overflow pipe by spot welding.

[0008] A support is provided below the overflow lip, and the support is fixedly connected to the overflow pipe.

[0009] The support member is a support rod or a support plate.

[0010] The installation angle of the overflow lip is 35-45°. In actual installation, a 40° installation angle is preferred. The overflow port is horizontally positioned along the length of the overflow pipe.

[0011] The two ends of the branch pipe extend to the middle of the buffer cavity.

[0012] The beneficial effects of this utility model are: This application improves the flow pattern of the washing liquid entering the overflow pipe by setting a flow guide baffle, reducing turbulence and making the washing liquid more stable and evenly distributed. Finally, the water is evenly sprayed onto the filter cake through the inclined overflow lip. Furthermore, the overflow lip is designed as a downwardly inclined plate structure, which accelerates the overflow velocity of the washing liquid in the overflow pipe and forms a fan-shaped spray onto the filter cake surface at a specific angle, creating a wide and uniform washing area. This achieves uniform rinsing of the filter cake surface, improves filtration efficiency, reduces the phosphorus content of phosphogypsum, and increases phosphorus utilization.

[0013] Compared with traditional water washing distributors, the water washing distributor of this application has the following advantages: In terms of manufacturing, the water washing distributor of this application reduces material and manufacturing costs through optimized structural design. In terms of installation and maintenance, the modular design of the water washing distributor of this application greatly saves installation time, and the use of highly corrosion-resistant general-purpose materials in the structural materials greatly slows down the corrosion rate, extends service life, reduces maintenance frequency, and significantly reduces maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model under spraying conditions; Figure 3 This is a cross-sectional view of the present invention.

[0015] Reference numerals: 1-overflow pipe, 2-flow guide baffle, 3-buffer chamber, 4-outlet chamber, 5-branch pipe, 6-main water washing pipe, 7-overflow port, 8-overflow lip, 9-flow guide gap, 10-support component. Detailed Implementation

[0016] Example 1: Reference Figures 1 to 3 A water washing distributor for an extraction rotary vacuum filter includes an overflow pipe 1, a flow guide baffle 2, and a branch pipe 5. The overflow pipe 1 is divided into a buffer chamber 3 and a water outlet chamber 4 by the flow guide baffle 2. By setting the buffer chamber 3, the water washing liquid flowing rapidly into the branch pipe 5 can be buffered, the flow rate can be reduced, turbulence can be reduced, and the flow of the water washing liquid can be made more stable and evenly distributed. The water outlet chamber 4 further spreads the water washing liquid and evenly distributes the water flow, thereby facilitating the uniform spraying of the filter cake. The inlet end of the branch pipe 5 is connected to the main water washing pipe 6, and the outlets at both ends are connected to the overflow pipe 1 and connected to the buffer chamber 3. The overflow pipe 1 has an overflow port 7 of a certain length on its side and is connected to the water outlet chamber 4. An overflow lip 8 is installed at an angle downwards on the overflow port 7. A flow guiding gap 9 is provided between the bottom of the flow guiding baffle 2 and the inner wall of the overflow pipe 1. The bottom of the buffer chamber 3 and the water outlet chamber 4 are connected through the flow guiding gap 9.

[0017] The main water washing pipe 6 is mainly used for inputting the washing liquid. The outlets at both ends of the branch pipe 5 are connected to the overflow pipe 1 and communicate with the buffer chamber 3. The branch pipe 5 inputs the washing liquid through both ends, which can effectively reduce the impact force, reduce turbulence, and make the washing liquid tend to be stable. The setting of several overflow ports 7 is mainly to facilitate the outflow of the washing liquid and facilitate rinsing. The overflow lip 8 facilitates the guidance of the washing liquid, so that the washing liquid is evenly sprayed onto the filter cake along the overflow lip 8. The existence of the guide gap 9 is mainly to facilitate the flow of the washing liquid.

[0018] The flow guide baffle 2 is installed at an angle inside the overflow pipe 1, and the top of the flow guide baffle 2 is welded to the inner wall of the overflow pipe 1. This arrangement is mainly to facilitate the support and fixation of the flow guide baffle 2.

[0019] The installation angle of the flow guide baffle 2 is 130-140°. In actual installation, the installation angle of the flow guide baffle 2 is preferably 135°.

[0020] In this application, the washing liquid flows into the overflow pipe 1 through the branch pipe 5. Under the action of the guide baffle 2, the flow state of the washing liquid entering the overflow pipe 1 is changed, the turbulence is reduced, and the water flow is made more stable and evenly distributed. Finally, it is evenly sprayed onto the filter cake through the inclined overflow lip 8.

[0021] The bottom of the flow guide baffle 2 is spot-welded to the inner wall of the overflow pipe 1. This arrangement is mainly to facilitate further fixation of the flow guide baffle 2.

[0022] A support member 10 is provided below the overflow lip 8, and the support member 10 is fixedly connected to the overflow pipe 1. This arrangement is mainly to facilitate the support of the overflow lip 8 and prevent the overflow lip 8 from falling.

[0023] The support member 10 is a support rod or a support plate.

[0024] The overflow lip 8 is installed at an angle of 35-45°. The overflow lip 8 is designed as a downwardly inclined plate structure, which can accelerate the overflow speed of the washing liquid in the overflow pipe 1 and form a fan-shaped spray on the surface of the filter cake at a specific angle, forming a wide and uniform water washing area, thereby achieving uniform rinsing of the filter cake surface, improving filtration efficiency, reducing the phosphorus content of phosphogypsum, and improving phosphorus utilization.

[0025] The overflow port 7 is horizontally arranged along the length of the overflow pipe 1.

[0026] The two ends of the branch pipe 5 extend to the middle of the buffer cavity 3.

[0027] This application, by extending both ends of the branch pipe 5 into the buffer chamber 3, prevents water flow from impacting and disturbing the liquid surface. When the washing liquid flows in, both ends of the branch pipe 5 are submerged below the surface of the washing liquid. The water below the liquid surface naturally consumes the kinetic energy of the water flow through fluid resistance, avoiding high-speed water flow directly impacting the liquid surface to form turbulence, eddies, or splashes. This allows the water inlet to slowly mix with the fluid in the overflow pipe 1, maintaining liquid surface stability and reducing interference with the uniform outflow of the inclined overflow lip 8. The baffle plate 2 further improves the flow pattern of the washing liquid entering the overflow pipe 1, reduces turbulence, and makes the washing liquid tend to be stable, with a uniform water flow distribution. Finally, the water is evenly sprayed onto the filter cake through the inclined overflow lip 8. Furthermore, the overflow lip 8 is designed as a downward-sloping plate structure, which can accelerate the overflow speed of the washing liquid in the overflow pipe 1 and form a fan-shaped spray onto the filter cake surface at a specific angle, forming a wide and uniform washing area, thereby achieving uniform rinsing of the filter cake surface, improving filtration efficiency, reducing the phosphorus content of phosphogypsum, and improving phosphorus utilization.

[0028] In this application, the overflow pipe 1, the flow guide baffle 2, the diversion branch pipe 5 and the overflow lip 8 are made of general-purpose materials with strong corrosion resistance, which can slow down the corrosion rate and extend the service life.

[0029] Compared with traditional water washing distributors, the water washing distributor of this application has the following advantages: In terms of manufacturing, the water washing distributor of this application reduces material and manufacturing costs through optimized structural design. In terms of installation and maintenance, the modular design of the water washing distributor of this application greatly saves installation time, and the use of highly corrosion-resistant general-purpose materials in the structural materials greatly slows down the corrosion rate, extends service life, reduces maintenance frequency, and significantly reduces maintenance costs.

[0030] The water washing distributor of this application not only simplifies the complex structure of traditional water washing distributors, but also significantly improves water washing efficiency, equipment reliability and efficiency, thereby improving filtration efficiency, reducing phosphorus content in phosphogypsum, and increasing phosphorus utilization, providing important support for improving the water washing performance of extraction vacuum disc filters.

Claims

1. A water washing distributor for an extraction disc vacuum filter, comprising an overflow pipe (1), a flow guide baffle (2), and a branch pipe (5), characterized in that... The overflow pipe (1) is divided into a buffer chamber (3) and an outlet chamber (4) by a flow guide baffle (2). The inlet end of the branch pipe (5) is connected to the main water washing pipe (6), and the outlets at both ends are connected to the overflow pipe (1) and connected to the buffer chamber (3). The overflow pipe (1) has an overflow port (7) of a certain length that is connected to the outlet chamber (4). An overflow lip (8) is installed at an angle to the bottom of the overflow port (7). A flow guide gap (9) is provided between the bottom of the flow guide baffle (2) and the inner wall of the overflow pipe (1). The bottom of the buffer chamber (3) and the outlet chamber (4) are connected through the flow guide gap (9).

2. The water washing distributor for an extraction rotary vacuum filter according to claim 1, characterized in that: The flow guide baffle (2) is installed at an angle inside the overflow pipe (1), and the top of the flow guide baffle (2) is welded to the inner wall of the overflow pipe (1).

3. The water washing distributor for an extraction rotary vacuum filter according to claim 2, characterized in that: The installation angle of the flow guide baffle (2) is 130-140°.

4. The water washing distributor for an extraction rotary vacuum filter according to claim 1, characterized in that: The bottom of the flow guide baffle (2) is connected to the inner wall of the overflow pipe (1) by spot welding.

5. The water washing distributor for an extraction disc vacuum filter according to claim 1, characterized in that: A support member (10) is provided below the overflow lip (8), and the support member (10) is fixedly connected to the overflow pipe (1).

6. The water washing distributor for an extraction disc vacuum filter according to claim 5, characterized in that: The support member (10) is a support rod or a support plate.

7. The water washing distributor for an extraction disc vacuum filter according to claim 1 or 5, characterized in that: The installation angle of the overflow lip (8) is 35-45°.

8. The water washing distributor for an extraction rotary vacuum filter according to claim 1, characterized in that: The overflow port (7) is horizontally arranged along the length of the overflow pipe (1).

9. The water washing distributor for an extraction rotary vacuum filter according to claim 1, characterized in that: The two ends of the branch pipe (5) extend to the middle of the buffer cavity (3).

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