Liquid conveying chute

Abstract

The utility model discloses a liquid conveying chute, and belongs to the technical field of phosphorus chemical industry. The liquid conveying chute is obliquely arranged downwards from front to back and is formed by sequentially splicing a plurality of sections of chutes (1) from front to back, and a solid-liquid separation tank (3) is arranged at the rear end of the liquid conveying chute. The turning position and the position needing to be adjusted up and down are each provided with a transfer cylinder (2), and the heights of the multiple transfer cylinders (2) are sequentially reduced in the conveying direction. The chute (1) comprises a U-shaped chute body (11) and a plurality of first cover plates (12) at the top of the U-shaped chute body (11), and the first cover plates (12) are sequentially arranged in the direction of the U-shaped chute body (11); one end of the first cover plate (12) is hinged to the top of the corresponding groove edge of the U-shaped groove body (11) and can be unscrewed upwards. A closed structure is adopted, and the cover plate at the top is opened during cleaning, so that liquid in the chute is prevented from being polluted; steering and height adjustment are achieved through the arrangement of the transfer cylinder; and by arranging the solid-liquid separation tank, solid-liquid separation during cleaning is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to phosphorus chemical technology field, especially relate to a liquid delivery chute, can be used to deliver wet process phosphoric acid or phosphogypsum slurry etc. BACKGROUND

[0002] Phosphogypsum is produced in the process of preparing wet process phosphoric acid, and needs to be treated (usually neutralized by adding quicklime or slaked lime, washed with water, etc.) before being stacked or landfilled. In the process of treating phosphogypsum, the phosphogypsum needs to be sent from the phosphoric acid production plant area to the phosphogypsum treatment plant area. In order to facilitate the transportation of phosphogypsum, the phosphogypsum is usually re-slurried into phosphogypsum slurry (usually with a density of 1.3 g / cm 3 ) by phosphogypsum backwater or clean water, and then transported. The solid content of the phosphogypsum slurry is high, and it is easy to deposit in the conveying pipeline. The solid content of the wet process phosphoric acid is usually about 1%, and it needs to be sent from the phosphoric acid production plant area to the ammonium phosphate plant area. In the process of transportation, the solid matter is easy to deposit in the conveying pipeline.

[0003] In order to facilitate cleaning, a chute can be used to transport wet process phosphoric acid or phosphogypsum in the prior art.

[0004] Patent No. CN201610981897.X discloses a method for producing sodium fluorosilicate by using high-salinity wastewater, which comprises the following steps:

[0005] (1) The high-salinity wastewater containing sodium sulfate salt is subjected to neutralization, pressure filtration, electrochemical treatment and clarification steps to remove heavy metal impurities, and high-salinity wastewater meeting the water quality requirements for phosphoric acid production is obtained.

[0006] (2) In the production of wet process phosphoric acid, the high-salinity wastewater obtained in step (1) is transported to a low-position flash cooling circulating water system, a filter flush water, a filter washing water and a phosphoric acid reaction tank. Finally, the high-salinity wastewater is all introduced into dilute phosphoric acid to react with fluorosilicic acid in the dilute phosphoric acid to generate sodium fluorosilicate.

[0007] (3) The phosphogypsum-containing slurry generated in the phosphoric acid reaction of step (2) is separated by a filter to obtain dilute phosphoric acid, which is transported to a primary settling tank by a chute. The phosphogypsum solid matter carried by the acid is separated and settled in the primary settling tank. The separated phosphoric acid is transported to a secondary settling tank.

[0008] (4) The phosphoric acid obtained after the primary settling of step (3) is transported to a secondary settling tank by a chute, and sodium fluorosilicate is precipitated. The solid sodium fluorosilicate precipitated by continuous or periodic discharge is separated to obtain solid sodium fluorosilicate.

[0009] The patent uses a chute to transport phosphoric acid.

[0010] For example, patent application number CN201320131310.8 discloses a cleaning system for a phosphogypsum filtration device, including a sulfuric acid feed pipe connected to an extraction tank, and an acid drain pipe and a water inlet pipe connected to a filter. A first valve is provided on the sulfuric acid feed pipe, and a third valve and a filtrate delivery pump are installed on the acid drain pipe. A cleaning branch pipe is also connected to the sulfuric acid feed pipe upstream of the first valve. A second valve and a flow meter are installed sequentially on the cleaning branch pipe. The end of the cleaning branch pipe is connected to a feed chute connected between the extraction tank and the acid drain pipe. The output of the filtrate delivery pump is connected to the feed chute via a return pipe, and a fourth valve is installed on the return pipe.

[0011] This patent uses a chute to transport phosphogypsum slurry.

[0012] The applicant encountered the following problems when using the existing chute:

[0013] (1) The existing sluice is an open structure, and debris can easily enter the sluice and contaminate the liquid;

[0014] (2) The chute is not convenient for changing direction or overcoming obstacles;

[0015] (3) When cleaning the chute, solid substances flow out along the chute and contaminate the liquid in the storage structure. Summary of the Invention

[0016] To address the aforementioned problems, this utility model provides a liquid conveying chute with a closed structure. The top cover is opened during cleaning to prevent contamination of the liquid inside the chute. A transition cylinder is incorporated to enable steering and height adjustment. A solid-liquid separation tank is included to achieve solid-liquid separation during cleaning. The technical solution is as follows:

[0017] This utility model embodiment provides a liquid conveying chute, which is arranged obliquely downward from front to back and is composed of multiple chute sections 1 spliced ​​together from front to back. The rear end of the liquid conveying chute is provided with a solid-liquid separation tank 3, and there are transition cylinders 2 at the bends and where vertical adjustment is required. The height of the multiple transition cylinders 2 decreases sequentially along the conveying direction. The chute 1 includes a U-shaped trough 11 and multiple first cover plates 12 on its top, which are arranged sequentially along the direction of the U-shaped trough 11. One end of the first cover plate 12 is hinged to the top of the corresponding side of the U-shaped trough 11 and can be rotated upward.

[0018] Specifically, if there is an obstacle 4 at the point where the liquid conveying chute passes, the liquid conveying chute needs to be adjusted upward or downward to pass over the obstacle 4; a transfer cylinder 2 is provided in front of the obstacle 4, and the outlet of the transfer cylinder 2 is located above or below it and is located above or below the obstacle 4.

[0019] Specifically, in this embodiment of the present invention, the U-shaped groove 11 has an inclination angle of 5-15°, a width of 350-600mm, and a depth of 300-500mm; the first cover plate 12 is a rectangular plate that cooperates with the U-shaped groove 11 and has a length of 0.8-1.2m.

[0020] More specifically, in this embodiment of the present invention, the U-shaped groove 11 is a 316L stainless steel groove with a thickness of 2-5mm; the first cover plate 12 is a 316L stainless steel plate with a thickness of 2-5mm.

[0021] Furthermore, in this embodiment of the present invention, the upper side of the first cover plate 12 is provided with a plurality of handles 13 arranged side by side in the length direction. One end of the handle is hinged to the top of the corresponding groove side of the U-shaped groove 11 through a hinge 14, and the other end extends outward relative to the corresponding side of the U-shaped groove 11 to form an extension side 15.

[0022] Furthermore, in this embodiment of the present invention, a support beam 16 is provided at the top of the U-shaped groove 11 and adjacent to the middle of each first cover plate 12, and the support beam 16 is perpendicular to the U-shaped groove 11.

[0023] Specifically, in this embodiment of the present invention, the width of the U-shaped groove 11 is 400mm and its depth is 350mm; the length of the first cover plate 12 is 1m, and it is hinged to the U-shaped groove 11 by two hinges 14, and two handles 13 are provided on its upper side; the two hinges 14 are located in front of and behind the support beam 16 respectively, and the two handles 13 are located in front of and behind the support beam 16 respectively; the length of the extension edge 15 is 20mm.

[0024] In this embodiment of the present invention, the solid-liquid separation tank 3 includes a first support, a first cylinder 31 vertically arranged on the first support, a conical bottom 32 at the bottom of the first cylinder 31, a valve at the bottom end of the conical bottom 32, a first feed inlet 33 on the upper front side of the first cylinder 31, a first discharge outlet 34 on the upper rear side of the first cylinder 31, and a receiving trolley directly below the first cylinder 31; the first feed inlet 33 and the second discharge outlet 34 are both tangent to the first cylinder 31 and are located on the left and right sides of the first cylinder 31, respectively.

[0025] In this embodiment of the utility model, the adapter cylinder 2 includes a second bracket, a second cylinder body vertically arranged on the second bracket, a second cover plate that can be opened on the top of the second cylinder body, a second inlet on the front side of the second cylinder body, and a second outlet on the second cylinder body. The second inlet is located at the upper or lower part of the second cylinder body, and the second outlet is located at the upper or lower part of the second cylinder body that is not at the front side.

[0026] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This utility model embodiment provides a liquid conveying chute with a closed structure. The top cover is opened during cleaning (screwed upwards, closed at other times). The closed structure can prevent the liquid in the chute from being contaminated. By setting an adapter, the direction and height adjustment can be realized. By setting a solid-liquid separation tank, the solid-liquid separation during cleaning can be realized, avoiding the contamination of the liquid in the subsequent storage structure by the solids washed out. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the liquid conveying chute in this embodiment of the present invention when the chute passes over an obstacle upwards;

[0028] Figure 2 This is a schematic diagram of the structure of the liquid conveying chute in this embodiment of the present invention when the chute moves downward over an obstacle;

[0029] Figure 3 This is a schematic diagram of the chute structure;

[0030] Figure 4 This is a top view of the chute;

[0031] Figure 5 It is a cross-sectional view of the chute;

[0032] Figure 6 This is a magnified view of the chute and hinge.

[0033] Figure 7 This is a schematic diagram of the solid-liquid separation tank;

[0034] Figure 8 This is a top view of the solid-liquid separation tank.

[0035] In the diagram: 1. Sluice box, 2. Transfer cylinder, 3. Solid-liquid separation tank, 4. Obstacles;

[0036] 11 U-shaped channel, 12 first cover plate, 13 handle, 14 hinge, 15 extension edge, 16 support beam;

[0037] 31 First cylinder, 32 Conical bottom, 33 First feed inlet, 34 First discharge outlet. Detailed Implementation

[0038] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0039] Example 1

[0040] See Figures 1-8Example 1 provides a liquid conveying chute, which is arranged diagonally downwards from front to back. It is composed of multiple chute sections 1 connected sequentially from front to back. A solid-liquid separation tank 3 is provided at its rear end (used to separate solids and liquids during cleaning of the liquid conveying chute). This tank can be located between two storage structures (there is a height difference between the two storage structures, which can be storage tanks or troughs, etc.). Adapter cylinders 2 are provided at bends and points requiring vertical adjustment to achieve steering and height adjustment. Along the conveying direction, the height of multiple adapter cylinders 2 (if any) decreases sequentially to ensure that the liquid can flow backwards by gravity.

[0041] The chute 1 includes a U-shaped trough 11, multiple first cover plates 12 on the top of the U-shaped trough 11, multiple handles 13 on the upper side of the first cover plates 12, and multiple support beams 16 on the top of the U-shaped trough 11. The U-shaped trough 11 has an inclination angle of 5-15°, a width of 350-600mm, and a depth of 300-500mm. It is made of 316L stainless steel with a thickness of 2-5mm and can be mounted on a corresponding support. The length of a single chute 1 is 5-25m. Multiple first cover plates 12 are arranged sequentially along the direction of the U-shaped trough 11 (adjacent or detached to ensure a sealing effect; sealing strips can be installed on the front and rear sides of the first cover plates 12). The cover plate 12 can be rotated upwards. It is a rectangular plate that mates with the U-shaped groove 11, with a length of 0.8-1.2m. One end of the cover plate is hinged to the top of the corresponding groove edge of the U-shaped groove 11 via a hinge 14 (multiple hinges 14 are arranged side by side along the direction of the U-shaped groove 11). The other end of the cover plate extends outward relative to the corresponding side of the U-shaped groove 11 to form an extension edge 15, which is made of 316L stainless steel plate with a thickness of 2-5mm. Multiple handles 13 are arranged side by side along the length of the first cover plate 12, perpendicular to the U-shaped groove 11, and have a U-shaped structure. The number of support beams 16 is equal to the number of the first cover plates 12, with one support beam 16 corresponding to the lower middle of each first cover plate 12. The support beams 16 are perpendicular to each other, and their left and right ends are fixed to the top of the corresponding groove edge of the U-shaped groove 11, respectively. They can be angle iron (specifications L50mm*5mm). The support beam 16 serves to prevent deformation of the U-shaped channel 11.

[0042] Specifically, see Figures 1-2 If there is an obstacle 4 in the passage of the liquid conveying chute, the liquid conveying chute needs to be adjusted upward or downward to pass over the obstacle 4; a transition tube 2 is set in front of the obstacle 4 to bend the liquid conveying chute. The outlet of the transition tube 2 is located above or below the obstacle 4 and is located above or below the obstacle 4, and is adjusted according to actual needs.

[0043] Among them, see Figures 7-8The solid-liquid separation tank 3 in this embodiment of the present invention includes a first support, a first cylindrical body 31 vertically arranged on the first support, a conical bottom 32 at the bottom of the first cylindrical body 31, a valve at the bottom end of the conical bottom 32, a first feed inlet 33 on the upper front side of the first cylindrical body 31, a first discharge outlet 34 on the upper rear side of the first cylindrical body 31, and a receiving trolley (used to receive liquid output from the solid-liquid separation tank 3) directly below the first cylindrical body 31. The first feed inlet 33 and the second discharge outlet 34 are both tangent to the first cylindrical body 31 and are located on the left and right sides of the first cylindrical body 31, respectively. Specifically, the diameter of the first cylindrical body 31 is 800-1200 mm, and its height is 1100-1500 mm. The height of the conical bottom 32 is 1100-1500 mm, and its cone angle is 25-50°.

[0044] In this embodiment of the invention, the adapter cylinder 2 includes a second support, a second cylinder mounted vertically on the second support, a second openable cover plate on the top of the second cylinder, a second inlet on the front side of the second cylinder, and a second outlet on the second cylinder. The second cover plate is a circular cover that mates with the second cylinder and is hinged to the top of the second cylinder. The second cover plate can be unscrewed when cleaning the adapter cylinder 2. The second inlet is located at the upper or lower part of the second cylinder (depending on the actual situation), and the second outlet is located at the upper or lower part of the second cylinder (excluding the front side) (depending on the actual situation). The diameter of the second cylinder is 400-800 mm.

[0045] Example 2

[0046] Example 2 provides a liquid conveying chute, whose structure is basically the same as that of Example 1, except that: the U-shaped trough 11 in this example has a width of 400mm, a depth of 350mm, and a thickness of 3mm. The first cover plate 12 has a length of 1m and a thickness of 4mm, and is hinged to the U-shaped trough 11 by two hinges 14, with two handles 13 on its upper side. The two hinges 14 are located in front of and behind the corresponding support beams 16, respectively, and the distance between them and the support beams 16 is 250mm. The two handles 13 are located in front of and behind the corresponding support beams 16, respectively, with a length of 120mm, a height of 60mm, and a distance between them and the support beams 16 is 250mm. The length of the extension edge 15 is 20mm. The diameter of the first cylinder 31 is 1000mm, and its height is 1250mm. The height of the conical bottom 32 is 1250mm, and its cone angle is 34°. The diameter of the second cylinder is 500mm.

[0047] Example 3

[0048] Example 3 provides a liquid conveying chute, which has a structure that is basically the same as that of Example 1. The difference is that the liquid conveying chute in this example is located in a corridor. A rain shelter is provided at the top of the corridor and directly above the liquid conveying chute. A walkway is provided on the corridor for people to walk on in order to clean the liquid conveying chute.

[0049] Example 4

[0050] Example 4 provides a liquid conveying chute, which has a structure that is basically the same as that of Example 1, except that the liquid conveying chute in this example is used to convey wet phosphoric acid and is located between the settling tank of the desulfurization unit and the phosphoric acid finished product storage tank.

[0051] Example 5

[0052] Example 5 provides a liquid conveying sluice, the structure of which is basically the same as that of Example 1, except that the liquid conveying sluice in this example is used to convey phosphogypsum slurry and is located between the phosphoric acid production system and the phosphogypsum treatment system.

[0053] In this embodiment, "first" and "second" serve only as distinctions and have no other special meaning.

[0054] The above description is only a preferred embodiment of the present utility model and is 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 should be included within the protection scope of the present utility model.

Claims

1. A liquid conveying chute, wherein the liquid conveying chute is arranged obliquely downward from front to back and is composed of multiple chute segments (1) sequentially spliced ​​from front to back; characterized in that, The liquid conveying chute is equipped with a solid-liquid separation tank (3) at the rear end, and a transfer cylinder (2) is provided at the turning point and the point where vertical adjustment is required. The height of the multiple transfer cylinders (2) decreases sequentially along the conveying direction. The chute (1) includes a U-shaped trough (11) and multiple first cover plates (12) on its top. The multiple first cover plates (12) are arranged sequentially along the direction of the U-shaped trough (11). One end of the first cover plate (12) is hinged to the top of the corresponding side of the U-shaped trough (11) and can be rotated upward.

2. The liquid conveying chute according to claim 1, characterized in that, If there is an obstacle (4) in the passage of the liquid conveying chute, the liquid conveying chute needs to be adjusted up or down to pass over the obstacle (4); a transfer tube (2) is set in front of the obstacle (4), and the outlet of the transfer tube (2) is located above or below it and is located above or below the obstacle (4).

3. The liquid conveying chute according to claim 1, characterized in that, The U-shaped groove (11) has an inclination angle of 5-15°, a width of 350-600mm, and a depth of 300-500mm; the first cover plate (12) is a rectangular plate that cooperates with the U-shaped groove (11) and has a length of 0.8-1.2m.

4. The liquid conveying chute according to claim 1, characterized in that, The U-shaped groove (11) is a 316L stainless steel groove with a thickness of 2-5mm; the first cover plate (12) is a 316L stainless steel plate with a thickness of 2-5mm.

5. The liquid conveying chute according to claim 1, characterized in that, The upper side of the first cover plate (12) is provided with a plurality of handles (13) arranged side by side in the length direction. One end of the handle is hinged to the top of the corresponding groove side of the U-shaped groove (11) through a hinge (14), and the other end extends outward relative to the corresponding side of the U-shaped groove (11) to form an extension side (15).

6. The liquid conveying chute according to claim 5, characterized in that, A support beam (16) is provided at the top of the U-shaped groove (11) and adjacent to the middle of each first cover plate (12), the support beam (16) being perpendicular to the U-shaped groove (11).

7. The liquid conveying chute according to claim 6, characterized in that, The width of the U-shaped groove (11) is 400mm and its depth is 350mm; the length of the first cover plate (12) is 1m, and it is hinged to the U-shaped groove (11) by two hinges (14), and two handles (13) are provided on its upper side; the two hinges (14) are located in front of and behind the support beam (16) respectively, and the two handles (13) are located in front of and behind the support beam (16) respectively; the length of the extension edge (15) is 20mm.

8. The liquid conveying chute according to claim 1, characterized in that, The solid-liquid separation tank (3) includes a first support, a first cylinder (31) mounted vertically on the first support, a conical bottom (32) at the bottom of the first cylinder (31), a valve at the bottom of the conical bottom (32), a first feed inlet (33) at the upper front side of the first cylinder (31), a first discharge outlet (34) at the upper rear side of the first cylinder (31), and a receiving trolley directly below the first cylinder (31); the first feed inlet (33) and the second discharge outlet (34) are both tangent to the first cylinder (31) and are located on the left and right sides of the first cylinder (31), respectively.

9. The liquid conveying chute according to claim 1, characterized in that, The adapter tube (2) includes a second support, a second cylinder body vertically arranged on the second support, a second cover plate that can be opened on the top of the second cylinder body, a second inlet on the front side of the second cylinder body, and a second outlet on the second cylinder body. The second inlet is located at the upper or lower part of the second cylinder body, and the second outlet is located at the upper or lower part of the second cylinder body that is not at the front side.

Images