High-pressure plate frame exhaust water pipeline protection device

Abstract

The utility model discloses a high-pressure plate frame exhaust water pipeline protection device, which belongs to the technical field of plate frame filter pressing and comprises a feeding tank, a liquid inlet is arranged at the top end of the feeding tank, a liquid outlet is arranged at the bottom end of the feeding tank, the liquid outlet is connected with a plate frame type filter press through a liquid outlet pipeline, and an output port of the plate frame type filter press is connected with a cyclone through a first return pipe. The plate-and-frame filter press is connected with a high-pressure gas output device through a pipeline; a water outlet is formed in the bottom end of the cyclone and connected with the liquid inlet through a second backflow pipe, an air outlet is formed in the top end of the cyclone, a splitter plate is horizontally arranged on the lower portion of the cyclone, the outer edge of the splitter plate abuts against the inner wall of the cyclone, and a plurality of splitter holes are formed in the splitter plate. According to the utility model, the cyclone is connected with the plate-and-frame filter press, and the splitter plate is arranged at the lower part of the cyclone, so that air is discharged from the air outlet, the pressure of a water-air mixture is released in the cyclone, and the potential energy of moisture is reduced by the splitter plate, so that the moisture enters the second return pipe at a lower speed, and the impact of the second return pipe is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plate and frame filter pressing, and particularly relates to a high-pressure plate and frame exhaust water pipeline protection device. BACKGROUND

[0002] The xylose factory mainly uses corn cobs as raw materials to extract xylose by acid hydrolysis. During the hydrolysis process, most of the raw material corn cobs become powdery, and a small part of the corn cobs become granular and blocky corn cob residues due to high temperature and high pressure. The hydrolyzed corn cob residues are discharged by adding water and pressure, and then a pressure filter device is needed to remove the water in the residues and recover the sugar-containing water and residues.

[0003] The existing pressure filter equipment is a high-pressure plate and frame filter press. According to the good water permeability of corn cob residues, the plate and frame filter press uses high-lift and large-flow feeding. Part of the material in the plate and frame filter press is returned to the feeding tank through the reflux pipeline, and the feeding tank, pump and plate and frame filter press form a closed loop circulation system. The plate and frame filter press filters the hydrolyzed corn cob residues to separate the corn cob residues and water. However, there is still a large amount of free water in the filter cake after pressure filtration.

[0004] The existing technology mainly uses 6Kg / cm 2 The above compressed air high-pressure rapidly blows out the residual water, but the water-gas mixture has a large pressure, a large amount of which is discharged into the reflux pipeline, causing water hammer effect in the reflux pipeline. The sudden increase in pressure in the pipeline causes the welding seam of the reflux pipeline to crack, affecting normal production.

[0005] In view of the above problems existing in the prior art, the utility model combines years of design and use experience in the relevant field to design and manufacture a high-pressure plate and frame exhaust water pipeline protection device to overcome the above defects. UTILITY MODEL CONTENTS

[0006] To solve the problems existing in the prior art, the high-pressure plate and frame exhaust water pipeline protection device releases the pressure caused by a large amount of water-gas mixture, avoids cracking of the welding seam of the reflux pipeline, and separates the water-gas mixture to make the water flow back to the feeding tank more smoothly.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme: a high-pressure plate and frame exhaust water pipeline protection device, comprising a feeding tank, the top end of the feeding tank is provided with a liquid inlet, the side wall of the feeding tank is provided with a liquid outlet, the liquid outlet is connected with a plate and frame filter press through a liquid outlet pipeline, the output port of the plate and frame filter press is connected with a cyclone through a first reflux pipe, and the plate and frame filter press is connected with a high-pressure gas output device through a pipeline.

[0008] The cyclone bottom end is provided with a water outlet, the water outlet is connected with the liquid inlet through a second return pipe, the cyclone top end is provided with a gas outlet, the lower part of the cyclone is horizontally provided with a flow distribution plate, the flow distribution plate outer edge is in abutment with the cyclone inner wall, and a plurality of flow distribution holes are arranged on the flow distribution plate.

[0009] Preferably, the flow distribution plate is a downward convex arc-shaped plate.

[0010] Preferably, the cyclone one side is provided with a secondary separation tank, the secondary separation tank bottom end is provided with a feed inlet, and the feed inlet is connected with the cyclone gas outlet through a pipeline.

[0011] Preferably, the secondary separation tank top end is provided with a gas discharge port, the secondary separation tank upper part is provided with a gas blocking cover, the gas blocking cover is located in the secondary separation tank and the gas blocking cover lower end is open;

[0012] The feed inlet is vertically provided with a gas outlet pipe, the gas outlet pipe upper part is located in the gas blocking cover, the gas outlet pipe top end is horizontally provided with a gas release plate, the gas release plate outer edge is in abutment with the gas outlet pipe inner wall, and a plurality of gas release holes are arranged on the gas release plate.

[0013] Preferably, the gas outlet pipe outer surface is sleeved with a flow distribution cover, the flow distribution cover is located below the gas blocking cover, the flow distribution cover is a circular truncated cone, the flow distribution cover axis is coincident with the gas outlet pipe axis; the flow distribution cover can distribute the water flowing down in the gas blocking cover.

[0014] Preferably, the cyclone water outlet is connected with the second return pipe through a first branch pipe;

[0015] The secondary separation tank bottom end is provided with a discharge outlet, and the secondary separation tank discharge outlet is connected with a second branch pipe.

[0016] Preferably, the first branch pipe, the second return pipe and the second branch pipe are communicated through a three-way valve.

[0017] Preferably, the second return pipe is provided with a pump.

[0018] Preferably, the first return pipe diameter is greater than the second return pipe diameter.

[0019] The cyclone has the advantages that:

[0020] 1. The cyclone is connected with the plate-and-frame filter press, the flow distribution plate is arranged at the lower part of the cyclone, the water-gas mixture discharged from the plate-and-frame filter press enters the cyclone, the high-pressure air is discharged upwards from the cyclone gas outlet, the water is discharged downwards from the water outlet, the pressure is released, the high-pressure impact of the large amount of water-gas mixture on the second return pipe is relieved, the flow distribution plate can distribute the water of different flow rates, the potential energy of the water is reduced, the water enters the second return pipe at a lower speed, and the impact on the second return pipe is reduced.

[0021] 2. The utility model discloses a secondary separation box, and water gas mixture is sprayed from the gas release hole, splashes on the gas resistance cover, and air and moisture are separated, air diffuses upwards after leaving the gas resistance cover, and moisture moves downwards, thoroughly separates the water gas mixture that is not separated sufficiently in the cyclone, and improves the separation effect of water gas mixture.

[0022] 3. The utility model discloses a shunt cover below the gas resistance cover, and the shunt cover shunts the moisture that flows out of the gas resistance cover. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a kind of high-pressure plate frame exhaust water pipeline protection device schematic diagram.

[0024] Figure 2 It is a kind of high-pressure plate frame exhaust water pipeline protection device cyclone plan view.

[0025] Figure 3 It is a kind of high-pressure plate frame exhaust water pipeline protection device shunt plate plan view.

[0026] Figure 4 It is a kind of high-pressure plate frame exhaust water pipeline protection device gas release plate plan view.

[0027] In the drawing: 1-feed tank, 2-liquid inlet, 3-liquid outlet, 4-liquid outlet pipeline, 5-plate and frame filter press, 6-high pressure gas output device, 7-cyclone, 8-gas outlet, 9-water outlet, 10-shunt plate, 11-shunt hole, 12-secondary separation box, 13-feeding port, 14-discharge port, 15-gas outlet, 16-gas resistance cover, 17-gas outlet pipe, 18-gas release plate, 19-gas release hole, 20-shunt cover, 21-first branch pipe, 22-second branch pipe, 23-three-way valve, 24-pump, 25-first return pipe, 26-second return pipe. DETAILED DESCRIPTION

[0028] In order to facilitate the person skilled in the art understanding, the utility model is further explained below in conjunction with the drawings.

[0029] As Figure 1 , Figure 2 , Figure 3 And Figure 4As shown, a high-pressure plate and frame exhaust water pipe protection device includes a feed tank 1, the feed tank 1 top end is provided with liquid inlet 2, the feed tank 1 side wall is provided with liquid outlet 3, the liquid outlet 3 is connected with plate and frame filter press 5 through liquid outlet pipeline 4, the plate and frame filter press 5 is connected with cyclone 7 through first backflow pipe 25, the water-gas mixture enters cyclone 7 along the tangent direction of cyclone 7, the plate and frame filter press 5 is connected with high-pressure gas output device 6 through pipeline, the pipeline between plate and frame filter press 5 and high-pressure gas output device 6 is provided with valve. The bottom end of cyclone 7 is provided with water outlet 9, the water outlet 9 is connected with liquid inlet 2 through second backflow pipe 26, the top end of cyclone 7 is provided with gas outlet 8.

[0030] Specifically, the compressed air is input to the plate and frame filter press 5 through the high-pressure gas output device 6, the residual moisture in the corn cob residue is blown away, and the water-gas mixture generates high pressure on the first backflow pipe 25. After the water-gas mixture enters the cyclone 7 along the tangent direction, due to the different weights of the water and the air, the water moves downward along the axial direction on the inner wall of the cyclone 7 under the centrifugal sedimentation effect, and the air moves upward along the axial direction in the center of the cyclone 7, and is discharged from the gas outlet 8 to release the pressure.

[0031] The lower part of the cyclone 7 is horizontally provided with a flow dividing plate 10, the flow dividing plate 10 is located in the cyclone 7 and the outer edge of the flow dividing plate 10 abuts against the cyclone 7, and the flow dividing plate 10 is an arc-shaped plate protruding downward, as shown in Figure 3 As shown, the flow dividing plate 10 is provided with a plurality of flow dividing holes 11.

[0032] Specifically, the separated water directly flows into the second backflow pipe 26 from the cyclone 7 at a large flow rate, which will cause a large impact on the second backflow pipe 26. The flow dividing plate 10 is arranged at the lower part of the cyclone 7, when the water on the inner wall of the cyclone 7 reaches the flow dividing plate 10, on the one hand, the flow dividing plate 10 changes the movement direction of the water and reduces the potential energy of the water; on the other hand, the flow dividing holes 11 on the flow dividing plate 10 divide the water, which reduces the pressure of the water entering the second backflow pipe 26 and reduces the damage of the second backflow pipe 26.

[0033] Generally, according to the amount of residual moisture in the corn cob residue, the pressure of the air input to the plate and frame filter press 5 is selected, the water-gas mixtures with different pressures have different movement trajectories in the cyclone 7, and the flow dividing plate 10 can reduce the potential energy and divide the water with different movement trajectories.

[0034] A secondary separation box 12 is provided on one side of the cyclone 7. A feed port 13 and a discharge port 14 are provided at the bottom of the secondary separation box 12. An exhaust port 15 is provided at the top of the secondary separation box 12. The feed port 13 is connected to the air outlet 8 of the cyclone 7 through a pipe. A valve is provided on the pipe between the feed port 13 and the air outlet 8 of the cyclone 7. An air blocking hood 16 is provided in the secondary separation box 12. The air blocking hood 16 is located at the upper part of the secondary separation box 12, and the lower end of the air blocking hood 16 is open. The feed port 13 is connected to a vertically arranged air outlet pipe 17. The upper part of the air outlet pipe 17 is located in the air blocking hood 16, and an air release plate 18 is horizontally provided at the top of the air outlet pipe 17. The outer edge of the air release plate 18 abuts against the inner wall of the air outlet pipe 17, as shown in FIG. Figure 4 As shown, the air release plate 18 is provided with a plurality of air release holes 19 .

[0035] In this invention, the air discharged from the top of the cyclone 7 still carries some moisture. To improve the separation of the water-air mixture, a secondary separation box 12 is provided. The air and some moisture discharged from the top of the cyclone 7 have a certain velocity. After entering the air outlet pipe 17, they are ejected from the air release holes 19 and splash onto the inner wall of the air blocking cover 16, separating the moisture from the air.

[0036] The outer surface of the air outlet pipe 17 is provided with a diverter cover 20, which is located below the air blocking cover 16. The diverter cover 20 is frustum-shaped, and the axis of the diverter cover 20 coincides with the axis of the air outlet pipe 17. The diverter cover 20 can divert the water flowing out of the air blocking cover 16, and the water flowing out of the air blocking cover 16 can fall to the bottom of the secondary separation box 12 through the diverter cover 20.

[0037] Specifically, the moisture separated by the air blocking hood 16 flows downward and is diverted by the diversion hood 20, and the air escaping from the air blocking hood 16 diffuses upward. If there is still moisture in the air, the moisture flows to the bottom of the secondary separation box 12 under the action of gravity during the upward diffusion of the air, thereby improving the water vapor separation effect.

[0038] The water outlet 9 of the cyclone 7 is connected to the second return pipe 26 via a first branch pipe 21. A discharge port 14 is provided at the bottom end of the secondary separation tank 12, which is connected to a second branch pipe 22. The first branch pipe 21, the second return pipe 26, and the second branch pipe 22 are connected via a three-way valve 23. A pump 24 is provided on the second return pipe 26. The diameter of the first return pipe 25 is larger than that of the second return pipe 26. Valves are provided on both the liquid outlet pipe 4 and the first return pipe 25.

[0039] Specifically, pump 24 pumps water from cyclone 7 and secondary separation tank 12 into feed tank 1. This water, containing sugar, is recycled and reused, reducing waste. The larger diameter of first return pipe 25 can initially alleviate the pressure of the water-air mixture discharged from plate-and-frame filter press 5, preventing damage to first return pipe 25 caused by the high-pressure water-air mixture. Three-way valve 23 controls the flow of fluid within the pipeline.

[0040] Specific operation process

[0041] Firstly, the corn cob residue is produced by hydrolysis of the feed tank 1, and the corn cob residue is sent into the plate-and-frame filter press 5 through the pipeline. The plate-and-frame filter press 5 filters the corn cob residue to filter out most of the water in the corn cob residue. The high-pressure gas output device 6 blows 8 Kg / cm 2 of high-pressure air into the plate-and-frame filter press 5 to take away the residual water in the corn cob residue to form a high-pressure water-air mixture.

[0042] The water-air mixture enters the cyclone 7 from the tangent direction of the cyclone 7 through the first return pipe 25. Under the centrifugal sedimentation effect, the water and the air are separated. The water moves axially downward along the inner wall of the cyclone 7, changes the flow direction when flowing to the flow distribution plate 10, and flows out from the flow distribution hole 11 into the first branch pipe 21. The air is discharged from the air outlet 15 of the cyclone 7 to release the pressure. The communication between the first branch pipe 21 and the second return pipe 26 of the three-way valve 23 is opened, the water in the first branch pipe 21 is pumped into the feed tank 1 by the pump 24, and then the communication between the first branch pipe 21 and the second return pipe 26 of the three-way valve 23 is closed.

[0043] The air and a small amount of water-air mixture discharged from the air outlet 8 of the cyclone 7 have a certain speed. After the air and the small amount of water-air mixture enter the air outlet pipe 17 from the pipeline, they are splashed onto the air resistance cover 16 from the air release hole 19 of the air release plate 18, the air and the small amount of water-air mixture are separated, the air escapes from the open end of the air resistance cover 16, and then is discharged from the air outlet 15 of the secondary separation tank 12. The small amount of water after separation falls to the bottom of the secondary separation tank 12 from the flow distribution cover 20.

[0044] After a certain amount of water is accumulated in the secondary separation tank 12, the communication between the second branch pipe 22 and the second return pipe 26 of the three-way valve 23 is opened, the water in the secondary separation tank 12 is pumped into the feed tank 1 by the pump 24, and then the communication between the first branch pipe 21 and the second return pipe 26 of the three-way valve 23 is closed.

[0045] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the protection scope of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A high-pressure plate frame exhaust water pipe protection device, characterized in that: The invention comprises a feed tank (1), wherein the top of the feed tank (1) is provided with a liquid inlet (2), the side wall of the feed tank (1) is provided with a liquid outlet (3), the liquid outlet (3) is connected to a plate-and-frame filter press (5) via a liquid outlet pipe (4), the output port of the plate-and-frame filter press (5) is connected to a cyclone (7) via a first return pipe (25), and the plate-and-frame filter press (5) is connected to a high-pressure gas output device (6) via a pipe; The bottom end of the cyclone (7) is provided with a water outlet (9), and the water outlet (9) is connected to the liquid inlet (2) through a second return pipe (26). The top end of the cyclone (7) is provided with an air outlet (8). A diverter plate (10) is horizontally provided at the lower part of the cyclone (7), and the outer edge of the diverter plate (10) abuts against the inner wall of the cyclone (7). The diverter plate (10) is provided with a plurality of diverter holes (11).

2. A high-pressure plate frame exhaust water pipe protection device according to claim 1, characterized in that: The diverter plate (10) is a downwardly convex arc-shaped plate.

3. A high-pressure plate frame exhaust water pipe protection device according to claim 1, characterized in that: A secondary separation box (12) is provided on one side of the cyclone (7), a feed port (13) is provided at the bottom of the secondary separation box (12), and the feed port (13) is connected to the air outlet (8) of the cyclone (7) through a pipeline.

4. A high-pressure plate frame exhaust water pipe protection device according to claim 3, characterized in that: The top of the secondary separation box (12) is provided with an exhaust port (15), and the upper part of the secondary separation box (12) is provided with an air blocking cover (16), the air blocking cover (16) is located in the secondary separation box (12) and the lower end of the air blocking cover (16) is open; The feed port (13) is vertically provided with an air outlet pipe (17), the upper part of the air outlet pipe (17) is located in the air blocking cover (16), and the top of the air outlet pipe (17) is horizontally provided with an air release plate (18), the outer edge of the air release plate (18) is in contact with the inner wall of the air outlet pipe (17), and the air release plate (18) is provided with a plurality of air release holes (19).

5. A high-pressure plate frame exhaust water pipe protection device according to claim 4, characterized in that: The outer surface of the air outlet pipe (17) is sleeved with a diverter cover (20), the diverter cover (20) is located below the air blocking cover (16), the diverter cover (20) is truncated, and the axis of the diverter cover (20) coincides with the axis of the air outlet pipe (17); the diverter cover (20) can divert water flowing down from the air blocking cover (16).

6. A high-pressure plate frame exhaust water pipe protection device according to claim 3, characterized in that: The water outlet (9) of the cyclone (7) is connected to the second return pipe (26) via a first branch pipe (21); The bottom end of the secondary separation box (12) is provided with a discharge port (14), and the discharge port (14) of the secondary separation box (12) is connected to a second branch pipe (22).

7. A high-pressure plate frame exhaust water pipe protection device according to claim 6, characterized in that: The first branch pipe (21), the second return pipe (26) and the second branch pipe (22) are connected via a three-way valve (23).

8. The high-pressure plate frame exhaust water pipe protection device according to claim 1, characterized in that: The second reflux pipe (26) is provided with a pump (24).

9. The high-pressure plate frame exhaust water pipe protection device according to claim 1, characterized in that: The diameter of the first return pipe (25) is greater than the diameter of the second return pipe (26).

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