A backflush tank and backflush system for a press

Abstract

The application discloses a back flushing tank and a back flushing system for a squeezer, which comprises at least a buffer tank, a buffer cavity, a shunt pipe and a pressure relief plate; the buffer tank is arranged at the top of the buffer cavity, and the buffer tank is connected with the shunt pipe arranged in the buffer cavity through a main pipeline; the pressure relief plate is arranged around the main pipeline and divides the buffer cavity into two chambers, the top of the buffer cavity is further provided with a gas outlet, and the bottom of the buffer cavity is provided with a discharge port; through the scheme, the material in the high-pressure gas can be separated from the high-pressure gas, the material can be collected and recycled, and the overall productivity of the system is improved.

Description

Technical Field

[0001] This invention relates to the field of lithium salt slurry pressing technology, and particularly to a backflushing tank and a backflushing system for a press. Background Technology

[0002] After the pressing machine completes its pressing operation, slurry remains in its internal pipelines. Therefore, backflushing is necessary to blow the residual slurry back into the slurry tank. During the backflushing process, the backflushing pressure is relatively high, reaching approximately 0.8 MPa, which can blow material out of the slurry tank. This not only reduces the system's capacity but also causes some environmental pollution. Furthermore, there are certain safety risks for construction workers during the backflushing process. Summary of the Invention

[0003] The purpose of this invention is to provide a backflushing tank and a backflushing system for a press, addressing the aforementioned shortcomings. This solves the problem that in the prior art, during the backflushing operation of a press, the high backflushing pressure (around 0.8 MPa) blows the material out of the slurry tank, reducing the system's capacity and causing environmental pollution.

[0004] This invention is achieved through the following scheme:

[0005] A backflushing system for a press includes at least a buffer box, a buffer chamber, a diversion pipe, and a pressure relief plate; the buffer box is located at the top of the buffer chamber and is connected to the diversion pipe located inside the buffer chamber via a main pipeline; the pressure relief plate is arranged around the main pipeline and divides the buffer chamber into upper and lower chambers; the top of the buffer chamber is provided with an air outlet and the bottom of the buffer chamber is provided with a material discharge port.

[0006] Based on the structure of the aforementioned backflushing tank, at least two diversion pipes are provided, and the angle between the diversion pipes and the vertical plane is no greater than 90°.

[0007] Based on the structure of the above-mentioned backflushing tank, the bottom of the buffer chamber is funnel-shaped, the discharge port is located at the center of the bottom of the buffer chamber, and a maintenance hole is also provided near the discharge port.

[0008] Based on the structure of the aforementioned backflushing tank, a level gauge is provided on the side wall of the buffer chamber; a flushing port is also provided on the top of the buffer chamber.

[0009] Based on the above-mentioned structure of a backflushing tank, the pressure relief plate is set in two layers in the upper cavity. The pressure relief plate is an overall reverse funnel-shaped structure. Ventilation holes are evenly distributed on the pressure relief plate, and the ventilation holes on the upper pressure relief plate and the ventilation holes on the lower pressure relief plate are staggered.

[0010] Based on the structure of the above-mentioned backflushing tank, the air outlets are evenly arranged in four positions at the top of the buffer chamber, and each air outlet is provided with a rainproof sealing cover; the rainproof sealing cover is hinged to the air outlet.

[0011] Based on the structure of the above-mentioned backflushing tank, the interval between adjacent pressure relief plates is not less than 400mm; multiple lifting lugs are provided along the circumferential position of the buffer chamber sidewall.

[0012] This solution also discloses a backflushing system for a press, comprising at least a press, a slurry preparation tank, a material pump, and a backflushing tank; the outlet of the slurry preparation tank is connected to the material pump, the material pump is connected to a second pipeline via a first pipeline, the second pipeline is connected to the inlet of the press, the inlet of the backflushing tank is connected to the second pipeline via a third pipeline, and the outlet of the backflushing tank is connected to the inlet of the slurry preparation tank via a fourth pipeline.

[0013] Based on the structure of the backflushing system for a press described above, the horizontal height of the backflushing tank is not lower than the height of the slurry mixing tank.

[0014] Based on the structure of the backflushing system for a press described above, a fifth pipeline is provided on the fourth pipeline, and two slurry preparation tanks are provided. The slurry preparation tanks are connected to the backflushing tank through the fifth pipeline; a material pump is used periodically to backflush the third pipeline.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. In this scheme, the high-pressure gas carrying materials is directly connected to the buffer tank. Since the buffer tank itself has a certain volume, it can initially buffer and slow down the high-pressure gas. Then, the high-pressure gas enters the buffer chamber through the main pipeline, and then the branch pipe disperses it into multiple branches. After the high-pressure gas flows back through the branches, it avoids direct contact with the inside of the buffer chamber, so that most of the material in the high-pressure gas adheres to the side wall. Then the gas flows upward, and after being depressurized by the pressure relief plate, it is finally discharged through the gas outlet. The material deposited at the bottom is periodically discharged outward through the discharge port to the slurry tank. This scheme can achieve solid-gas separation of materials in high-pressure gas and high-pressure gas, and at the same time, it can collect and recycle the materials, improving the overall efficiency and production capacity of the system.

[0017] 2. With this solution, during normal feeding, the material enters the press through the first and second pipelines driven by the material pump. When the press is backwashed with high-pressure gas, the compressed air carrying the material generated by the backwashing enters the backwash tank through the second and third pipelines. After the high-pressure gas is depressurized, the material is transported through the fourth pipeline to the slurry tank for recycling, thereby improving the utilization rate of the material. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the backflushing tank in this invention;

[0019] Figure 2 This is a top view of the pressure relief plate in this invention.

[0020] Figure 3 This is a top view of the backflushing tank of the present invention;

[0021] Figure 4 This is a schematic diagram of the over-recoil system in this invention;

[0022] Attached diagram descriptions: 1. Buffer tank; 2. Buffer chamber; 3. Diverter pipe; 4. Pressure relief plate; 5. Air outlet; 6. Feed outlet; 7. Maintenance hole; 8. Level gauge; 9. Vent hole; 10. Flushing port; 11. Lifting lug; 12. Press; 13. Backflushing tank; 14. Slurry mixing tank; 15. Material pump; 16. First pipeline; 17. Second pipeline; 18. Third pipeline; 19. Fourth pipeline. Detailed Implementation

[0023] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0024] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0025] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0027] Example 1

[0028] like Figures 1-3 As shown, the present invention provides a technical solution:

[0029] A backflushing tank includes, but is not limited to, a buffer tank 1, a buffer chamber 2, a diversion pipe 3, and a pressure relief plate 4; the buffer tank 1 is located at the top of the buffer chamber 2, and the buffer tank 1 is connected to the diversion pipe 3 located inside the buffer chamber 2 via a main pipeline; the pressure relief plate 4 is arranged around the main pipeline and divides the buffer chamber 2 into upper and lower chambers, and the top of the buffer chamber 2 is also provided with an air outlet 5, and the bottom of the buffer chamber is provided with a discharge port 6.

[0030] Based on the above structure, the high-pressure gas carrying the material is directly connected to the buffer tank 1. Since the buffer tank 1 has a certain volume, it can initially buffer the high-pressure gas and reduce its speed. Then, the high-pressure gas enters the buffer chamber 2 through the main pipeline, and then the diversion pipe 3 disperses it into multiple branches. After the high-pressure gas flows back through the branches, it avoids direct contact with the inner wall of the buffer chamber 2, so that most of the high-pressure gas adheres to the side wall. Then the gas flows upward, and after being depressurized by the pressure relief plate 4, it is finally discharged through the outlet 5. The material deposited at the bottom is discharged outward through the discharge port 6. This scheme can achieve solid-gas separation of the material in the high-pressure gas and the high-pressure gas, and at the same time, it can collect and recycle the material, improving the overall efficiency and production capacity of the system.

[0031] As an example, at least two diversion pipes 3 are provided, and the angle between the diversion pipes 3 and the vertical plane is no greater than 90°.

[0032] Based on the above structure, by setting the angle of the diverter 3 to no more than 90°, it can be ensured that the outgoing direction of the diverter 3 is not the same as the direction of the outlet 5, so that the gas can directly contact the side wall of the pressure buffer chamber 2, and after contacting the side wall, it will bend and move upward. At this time, some of the kinetic energy in the gas will be consumed, thereby further consuming the kinetic energy of the high-pressure gas.

[0033] As an example, the bottom of the buffer chamber 2 is currently funnel-shaped, and the discharge port 6 is located at the center of the bottom of the buffer chamber 2. A maintenance hole 7 can also be provided near the discharge port 6.

[0034] Based on the above structure, during normal use, the material deposited at the bottom of the buffer chamber 2 will be discharged outward through the discharge port 6. When a blockage occurs, the maintenance hole 7 is opened, and the operator can enter the buffer chamber 2 through the hole to clear the blockage.

[0035] As an example, a level gauge 8 is installed on the side wall of the buffer chamber 2; the level gauge 8 is used to detect the height of the material in the buffer chamber 2, which facilitates subsequent material unloading operations.

[0036] As an example, the pressure relief plate 4 is set in two layers in the upper cavity. The pressure relief plate 4 has an overall reverse funnel-shaped structure. Ventilation holes 9 are evenly distributed on the pressure relief plate 4, and the ventilation holes 9 on the upper pressure relief plate 4 and the ventilation holes 9 on the lower pressure relief plate 4 are staggered.

[0037] Based on the above structure, the gas after two depressurizations directly contacts the inverted funnel-shaped pressure relief plate 4, which further depressurizes it. At the same time, some material carried by the airflow will re-adhere to the contact surface between the pressure relief plate 4 and the airflow. Furthermore, by staggering the pressure relief plate 4 into two layers, pressure relief and material collection can be further achieved. Finally, the airflow after multiple depressurizations is discharged from the top outlet 5.

[0038] As an example, a flushing port 10 can also be provided at the top of the buffer chamber 2. Cleaning fluid can be injected into the buffer chamber 2 from top to bottom through the flushing port 10 to remove materials that may adhere to the surface of the pressure relief plate 4 and the side wall of the buffer chamber 2, and to prevent the vent hole 9 from being blocked.

[0039] As an example, four air outlets 5 are evenly distributed on the top of the buffer chamber 2, and each air outlet 5 is equipped with a rainproof sealing cover; the rainproof sealing cover is hinged to the air outlet 5. The rainproof sealing cover prevents rainwater from entering. By setting four air outlets 5, the uniformity of air output can be ensured.

[0040] As an example, the interval between adjacent pressure relief plates 4 is not less than 400mm. Only by setting a predetermined interval can a better pressure relief effect be achieved.

[0041] As an example, multiple lifting lugs 11 can be provided along the circumferential position of the side wall of the buffer cavity 2, so that the buffer cavity 2 can be moved quickly through the lifting lugs 11.

[0042] Example 2

[0043] like Figure 4 As shown, the present invention provides a technical solution:

[0044] A backflushing system for a press includes, but is not limited to, a press 12, a backflushing tank 13, a slurry preparation tank 14, and a material pump 15; the outlet of the slurry preparation tank 14 is connected to the material pump 15, the material pump 15 is connected to a second pipeline 17 via a first pipeline 16, the second pipeline 17 is connected to the inlet of the press 12, the inlet of the backflushing tank 13 is connected to the second pipeline 17 via a third pipeline 18, and the outlet of the backflushing tank 13 is connected to the inlet of the slurry preparation tank 14 via a fourth pipeline 19.

[0045] Based on the above structure, during normal feeding, the material enters the press 12 through the first pipeline 16 and the second pipeline 17 under the power of the material pump 15. When the press 12 is backwashed with high-pressure gas, the valve on the first pipeline 16 is closed and the valve on the third pipeline 18 is opened. The compressed air with material generated by backwashing enters the backwash tank 13 through the second pipeline 17 and the third pipeline 18. After depressurizing the high-pressure gas, it is transported through the fourth pipeline 19 to the slurry tank 14 for recycling, thereby improving the utilization rate of the material.

[0046] As an example, the horizontal position of the backflushing tank 13 is not lower than the height position of the mixing tank 14. This arrangement creates a height difference between the backflushing tank 13 and the mixing tank 14, allowing the material in the backflushing tank 13 to flow into the mixing tank 14 by gravity.

[0047] As an example, a fifth pipeline can be installed on the fourth pipeline 19, and two slurry tanks 14 are set. The slurry tanks 14 are connected to the backwash tank 13 through the fifth pipeline. To prevent the third pipeline 18 from being blocked, the material pump 15 is used to backwash the third pipeline 18 periodically.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A backflush system for a press, characterized by: The device comprises a press, a mixing tank, a material pump and a back flushing tank; the outlet of the mixing tank is connected with the material pump, the material pump is connected with a first pipeline and a second pipeline, the second pipeline is connected with the inlet of the press, the inlet of the back flushing tank is connected with the second pipeline through a third pipeline, and the outlet of the back flushing tank is connected with the inlet of the mixing tank through a fourth pipeline; the horizontal position of the back flushing tank is not lower than the horizontal position of the mixing tank; the back flushing tank comprises a buffer tank, a buffer chamber, a shunt pipe and a pressure relief plate; the buffer tank is arranged at the top of the buffer chamber, the buffer tank is connected with the shunt pipe arranged in the buffer chamber through a main pipeline, the pressure relief plate is arranged around the main pipeline and divides the buffer chamber into two chambers, the top of the buffer chamber is provided with an air outlet, and the bottom of the buffer chamber is provided with a discharge port; the shunt pipe is arranged in at least two, and the included angle between the shunt pipe and the vertical plane is not greater than 90°; the pressure relief plate is arranged in two layers in the upper chamber, the pressure relief plate has an inverted funnel structure, the pressure relief plate is uniformly provided with air holes, and the air holes on the upper pressure relief plate and the air holes on the lower pressure relief plate are arranged alternately.

2. A backflush system for a press as claimed in claim 1, characterized in that: A fifth pipeline is arranged on the fourth pipeline, the mixing tank is arranged in two, and the mixing tank is connected with the back flushing tank through the fifth pipeline; the material pump is used to periodically back flush the third pipeline.

3. A backflush system for a press as claimed in claim 2, characterised in that: The buffer chamber has a funnel shape, the discharge port is arranged at the center of the bottom of the buffer chamber, and a maintenance hole is arranged near the discharge port.

4. A backflush system for a press as claimed in claim 3, characterised in that: A liquid level meter is arranged on the sidewall of the buffer chamber, and a flushing port is arranged on the top of the buffer chamber.

5. A backflush system for a press as claimed in claim 4, characterised in that: Four air outlets are arranged on the top of the buffer chamber, and a rainproof sealing cover is arranged on each air outlet; the rainproof sealing cover is hinged to the air outlet.

6. A backflush system for a press as claimed in claim 5, characterised in that: The interval between adjacent pressure relief plates is not less than 400 mm, and a plurality of lifting lugs are arranged along the circumferential position of the sidewall of the buffer chamber.

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