Degassing device

Abstract

The utility model discloses a degassing device which comprises a separation cavity and a degassing assembly, a separation barrel used for mixing materials and separating gas and liquid is arranged in the separation cavity, the outer diameter of the separation barrel is smaller than the inner diameter of the separation cavity, a negative pressure cavity is formed between the separation barrel and the separation cavity, and the degassing assembly is connected with the negative pressure cavity; a plurality of air holes are formed in the surface of the separation barrel, a breathable film is arranged on the inner wall of the separation barrel, and mixing balls for mixing materials are arranged in the breathable film. According to the device, the material mixing and degassing requirements are met at the same time; the separation cavity is filled with the mixing balls, and materials and the mixing balls are extruded, so that the material mixing uniformity is improved, the dispersity of gas in the materials is improved, the coating property of the gas in a system is reduced, and the degassing efficiency is improved; the separation barrel and the separation cavity are connected in a concave-convex manner, and a sealing ring is arranged, so that the connection leakproofness of the separation barrel is improved, and the degassing efficiency is further improved; the device is simple in structure, high in flexibility and wide in application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to a material mixing device, especially a degassing device with material mixing function and high degassing efficiency. BACKGROUND

[0002] In the production process, a variety of materials are mixed, and some materials need to be degassed after mixing. The common degassing methods mainly include separation of gas-liquid two-phase fluid with different densities under the action of centrifugal force by cyclone or separation by gravity sedimentation. For some materials with large viscosity, uneven particle size or poor compatibility, there is interaction between the materials, and the degassing effect is not ideal, and a separate mixing device is needed to fully mix the materials. Chinese invention patent CN113144676 A discloses a novel mixed liquid degassing device, which improves the gas removal efficiency by setting a cyclone assembly and a gas-liquid separation umbrella. The structure is complex, large in size, and regardless of cyclone or separation umbrella with air holes, the disturbance of viscous or uneven particle or poorly compatible mixed materials is poor, the improvement of degassing efficiency is limited, and the mixing and degassing requirements of the materials cannot be met at the same time. SUMMARY

[0003] The utility model aims to simultaneously realize the mixing and degassing functions of the materials and improve the degassing efficiency, and provides a degassing device.

[0004] Technical scheme: The degassing device comprises a separation chamber and a degassing assembly, a separation barrel for mixing materials and gas-liquid separation is arranged in the separation chamber, the outer diameter of the separation barrel is smaller than the inner diameter of the separation chamber, a negative pressure chamber is formed between the two, and the degassing assembly is connected with the negative pressure chamber; a plurality of air permeable holes are arranged on the surface of the separation barrel, an air permeable membrane is arranged on the inner wall of the separation barrel, and a mixing ball for mixing materials is arranged in the air permeable membrane.

[0005] Further, the mixing ball is arranged in the separation chamber, the mixed materials are extruded by the mixing ball, the dispersion uniformity of the materials is improved, the dispersion of the gas in the materials is improved, the coating in the material system is reduced, and the degassing efficiency of the device is improved. The particle size of the mixing ball can be uniform, or the particle size can be set to gradually decrease from the inlet to the outlet in a step change. For some materials with uneven particle size or large viscosity, the mixing ball with large particles is used for preliminary mixing of the materials; as the mixing proceeds, the resistance of the material flow further decreases, the particle size of the mixing ball gradually decreases to improve the uniformity of the mixing, and the smoothness of the material flow is ensured.

[0006] Further, the inlet and outlet of the separation chamber are provided with a sieve plate for preventing leakage of the mixing ball.

[0007] Furthermore, the two ends of the separation barrel are provided with inwardly recessed funnel-shaped grooves surrounding the breathable membrane, and the inner wall of the separation chamber is provided with a first protrusion that cooperates with the funnel-shaped grooves to improve the sealing of the breathable membrane. The combination of the two compresses the breathable membrane to increase the airtightness of the separation barrel connection. At the same time, this concave-convex connection method provides a certain support for the separation barrel, improves the stability of the entire device, and improves the uniformity of material mixing and degassing efficiency.

[0008] Furthermore, a sealing ring is provided between the flared groove and the first protrusion to further improve the airtightness of the separation barrel connection.

[0009] Furthermore, the separation tank is made of resin material, which maintains a certain supporting strength under negative pressure to prevent deformation of the breathable membrane, thus affecting the degassing efficiency and the service life of the breathable membrane.

[0010] Furthermore, one end of the separation chamber is provided with an opening for easy disassembly of the separation barrel. The opening is fitted with a sealing end that is sealed to the separation chamber, for example, by a threaded connection, with sealing tape wrapped around the thread to improve the seal. The end of the sealing end near the separation barrel is provided with a cylindrical groove that inserts into the separation barrel. The cylindrical groove provides some support to the separation barrel, increasing its stability under negative pressure.

[0011] Furthermore, a second protrusion is provided inside the cylindrical groove to cooperate with the funnel-shaped groove of the separation barrel, further improving the airtightness of the separation barrel connection.

[0012] Furthermore, the vents are evenly distributed on the separation tank, and the diameter of the vents is less than or equal to the diameter of the mixing balls. This prevents the mixing balls from passing through the vents under negative pressure, thus affecting the performance and service life of the breathable membrane. The mixing balls are ceramic balls, rubber balls, or glass balls, with a particle size of 1–3 mm. The appropriate material and structure of the breathable membrane and mixing balls are selected based on the properties of the materials to be mixed.

[0013] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. It simultaneously achieves the requirements of material mixing and degassing; 2. The separation chamber is filled with mixing balls, and the extrusion of materials and mixing balls improves the uniformity of material mixing, while also improving the dispersion of gas in the materials, reducing the encapsulation of gas in the system, and improving degassing efficiency; 3. The separation barrel and the separation chamber are connected by a concave-convex structure and a sealing ring is set, which improves the airtightness of the separation barrel connection and further improves the degassing efficiency; 4. The device has a simple structure, high flexibility, and wide applicability. Attached Figure Description

[0014] Figure 1 This is an exploded view of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention. DETAILED DESCRIPTION

[0016] The technical scheme of the utility model will be further explained in connection with the drawings.

[0017] Example 1

[0018] As shown in Figure 1 and 2 A degassing device, comprising an integrated separation cavity 1, a separation barrel 2 is arranged in the separation cavity, the outer diameter of the separation barrel 2 is smaller than the inner diameter of the separation cavity 1, a negative pressure cavity 8 is formed between the two, a degassing assembly 4 and a gas outlet 12 are communicated with the negative pressure cavity 8; the surface of the separation barrel 2 is provided with a gas permeable hole, the inner wall of the separation barrel 2 is provided with a gas permeable film 5, the gas permeable film 5 is internally provided with a mixing ball for mixing materials, trumpet-shaped grooves 9 are arranged at both ends of the separation barrel 2 and around the gas permeable film 5, the inner wall of the separation cavity 1 is provided with a first boss 10 for matching the trumpet-shaped grooves 9 to improve the sealing performance of the gas permeable film 5, a sieve plate 6 and a sealing ring 7 are arranged between the separation barrel 2 and the feed inlet and discharge outlet of the separation cavity 1. The separation barrel 2 is made of a resin material such as PEEK, and a plurality of gas permeable holes are uniformly arranged thereon, the thickness of the gas permeable film 5 on the inner wall of the separation barrel 2 is 0.2mm, and the material and thickness of the gas permeable film can be adjusted according to the components or performance of the degassing material as required, for example, a polytetrafluoroethylene gas permeable film is used, the diameter of the gas permeable hole is less than or equal to the diameter of the mixing ball, and the gas permeable film 5 is supported under negative pressure to prevent deformation of the gas permeable film 5 and affect the degassing efficiency and service life of the gas permeable film 5. The mixing ball is selected to be a ceramic ball, a rubber ball or a glass ball according to the performance of the mixed material, and the particle size of the mixing ball is determined. The particle size of the mixing ball can be uniform or gradually reduced in a stepped manner from the feed inlet to the discharge outlet. For some materials with uneven particles or high viscosity, the flow resistance is large at the initial mixing stage, and the mixing ball is arranged with large particles for preliminary mixing of the material; as the mixing proceeds, the flow resistance of the material further decreases, the particle size of the mixing ball gradually decreases to improve the uniformity of the mixing and ensure the smoothness of the material flow.

[0019] Example 2

[0020] Different from example 1, the separation cavity 1 is a detachable sealed cavity, an opening is arranged at one end of the separation cavity 1 for facilitating disassembly of the separation barrel 2, a sealing end 3 is arranged at the opening and is sealingly connected with the separation cavity 1, for example, threaded connection, a sealing tape is wound on the threads to improve the sealing performance. A cylindrical groove 13 is arranged at the end of the sealing end 3 close to the separation barrel 2 and is inserted with the separation barrel 2, which has a certain limiting effect on the separation barrel 2, improves the stability of the equipment under negative pressure working state, and ensures the uniformity of mixing and the degassing efficiency.

[0021] Example 3

[0022] Different from the embodiment 2, the further setting of the second boss 11 in the cylindrical groove 13 matched with the trumpet-shaped groove 9 of the separation barrel 2 can further improve the sealing of the separation barrel and the discharge port, and improve the degassing efficiency.

[0023] In use, various materials enter the separation barrel 2 through the feed port of the separation cavity 1 and contact the mixing balls. The materials and the mixing balls are extruded to increase the uniformity of the materials, and the gas in the system is dispersed to the surface of the material system. Under the action of the degassing assembly 4, the gas in the system is collected in the negative pressure cavity 8 and then discharged through the gas outlet 12 of the degassing assembly 4. After mixing and degassing, the materials enter the next process through the discharge port of the separation cavity. The device simultaneously realizes the uniform mixing and degassing of the materials, and greatly improves the degassing efficiency of the materials.

Claims

1. A degassing device comprising a separation chamber (1) and a degassing assembly (4), characterized in that, The separation cavity (1) is provided with a separation barrel (2) for mixing materials and gas-liquid separation, the outer diameter of the separation barrel (2) is smaller than the inner diameter of the separation cavity (1), a negative pressure cavity (8) is formed between the separation barrel (2) and the separation cavity (1), and the degassing assembly (4) is connected with the negative pressure cavity (8).

2. The degassing device of claim 1, wherein The separation cavity (1) is provided with a separation barrel (2) for mixing materials and gas-liquid separation, the outer diameter of the separation barrel (2) is smaller than the inner diameter of the separation cavity (1), a negative pressure cavity (8) is formed between the separation barrel (2) and the separation cavity (1), and the degassing assembly (4) is connected with the negative pressure cavity (8).

3. The degassing device of claim 1, wherein The separation barrel (2) is provided with a trumpet-shaped groove (9) which is concave inward at both ends and around the gas permeable membrane (5), and the separation cavity (1) is provided with a first boss (10) which is matched with the trumpet-shaped groove (9) to improve the sealing performance of the gas permeable membrane.

4. The degassing device of claim 3, wherein The trumpet-shaped groove (9) and the first boss (10) are provided with a sealing ring (7) therebetween.

5. The degassing device of claim 1, wherein The separation barrel (2) is made of resin material.

6. The degassing device of claim 1, wherein One end of the separation cavity (1) is provided with an opening for facilitating the disassembly of the separation barrel (2), and the opening is provided with an end cap (3) which is tightly connected with the separation cavity (1).

7. The degassing device of claim 6, wherein The end cap (3) is provided with a cylindrical groove (13) which is inserted into the separation barrel (2) at the end close to the separation barrel (2).

8. The degassing device of claim 6, wherein, The cylindrical groove (13) is provided with a second boss (11) which is matched with the trumpet-shaped groove (9) of the separation barrel (2).

9. The degassing device of claim 1, wherein, The end cap (3) is threadedly connected with the separation cavity (1), and a sealing tape is wound on the threads to improve the sealing performance.

10. The degassing device of claim 1, wherein The gas permeable holes are uniformly arranged on the separation barrel (2), and the diameter of the gas permeable holes is smaller than or equal to the diameter of the mixing balls. The mixing balls are ceramic balls, rubber balls or glass balls, and the particle size of the mixing balls is 1-3 mm.

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