Screw extruder with adjustable exhaust port area
By setting multiple lids at the exhaust port of the screw extrusion machine, the adjustment of the exhaust port area can be achieved, and the problem of pulp overflow or mud film formation caused by the fixing of the exhaust port in the existing technology to ensure that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured that it is ensured. The normal operation of the vacuum system has improved the generality and cost benefits of the equipment.
Patent Information
- Application Number
- CN202420237379.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-01-30
AI Technical Summary
The exhaust ports in existing screw extruders are fixed in size and cannot meet the characteristics of different slurries, resulting in the slurry being easily overflowed or mud films formed at the exhaust ports, hindering the normal operation of the vacuum system.
Design a screw extruder with a adjustable exhaust port area. By setting multiple lids between the exhaust port and exhaust device of the extruded cylinder, different specifications of exhaust tanks are opened on each cover. Any cover plate can be worn in the exhaust port, so that the exhaust tank is connected to the extrusion cavity, and the exhaust area of the exhaust port is changed by replacing the cover plate.
By adjusting the area of the exhaust port, the slurry overflow or mud film formation of the exhaust port size is solved, the normal operation of the vacuum system is guaranteed, and the device's versatility and cost benefits are improved.
Smart Images
Figure CN222407068U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screw extruders, in particular to a screw extruder with adjustable exhaust port area. Background Art
[0002] The preparation of lithium battery slurry requires a variety of different raw materials to be mixed and dispersed, and the screw extruder has good conveying and mixing and dispersing capabilities, and can feed materials uninterruptedly, so it has been widely used. The bubbles in the slurry will greatly affect the quality of the slurry, so a vacuum device is often added to the screw extruder to achieve a degassing effect. The principle is: when the slurry is transported to the middle of the barrel in the screw, due to the sudden increase in the tooth depth in the middle of the screw, the slurry has a tendency to expand outward in this section. At the same time, the vacuum system added in the middle of the barrel is used to extract the gas in the expanded slurry to achieve the purpose of degassing.
[0003] The degassing device in the existing screw extruder generally has a fixed exhaust port size, which cannot adapt to the different characteristics of different slurries. The slurry is easy to overflow from the exhaust port, or a thin layer of muddy slurry is formed at the exhaust port, which hinders the normal operation of the vacuum system. Utility Model Content
[0004] Therefore, the purpose of the utility model is to provide a screw extruder with an adjustable exhaust port area to solve the problem in the prior art that the exhaust port has a constant size, causing slurry overflow or mud film to form at the exhaust port, thereby hindering the normal operation of the vacuum system.
[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:
[0006] A screw extruder with an adjustable exhaust port area comprises: an extrusion barrel, a cover plate and an exhaust connection device; an exhaust port is provided on the barrel wall of the extrusion barrel; a plurality of cover plates are provided, and a plurality of exhaust grooves of different specifications are respectively provided on the plurality of cover plates, and any of the cover plates is suitable for being inserted into the exhaust port so that the exhaust groove is connected with the extrusion cavity of the extrusion barrel; the exhaust connection device is covered on the exhaust port so as to be suitable for fixing the cover plate in the exhaust port, the exhaust connection device is provided with an exhaust cavity connected with the exhaust groove, and a connection port is provided on the side wall of the exhaust connection device, and the connection port is suitable for connecting to a vacuum device; the gas in the slurry is discharged in turn through the exhaust groove, the exhaust cavity and the connection port under the drive of the vacuum device.
[0007] According to some embodiments of the utility model, a baffle is provided in the exhaust chamber, one end of the baffle is connected to the side wall of the exhaust connection device having the connection port, the baffle is located below the connection port, and the other end of the baffle extends upward at an angle to separate the exhaust groove and the connection port, so that the gas flowing through the exhaust chamber flows in a U-shaped route.
[0008] According to some embodiments of the present invention, a projection of the baffle in the vertical direction is suitable for covering a cross section of the exhaust slot.
[0009] According to some embodiments of the utility model, an observation port is provided on the top of the exhaust connection device, and an end cover is provided on the observation port.
[0010] According to some embodiments of the present invention, a circular arc structure is provided at the bottom of the cover plate, and the radius of the circular arc structure is greater than the radius of the extrusion cavity.
[0011] According to some embodiments of the utility model, the cover plate is provided with a disassembly hole from top to bottom, and the disassembly hole is provided with an internal thread.
[0012] According to some embodiments of the utility model, a step surface is provided in the exhaust port, the cover plate is provided with a step suitable for matching with the step surface, and the upper end surface of the cover plate is flush with the port of the exhaust port.
[0013] According to some embodiments of the utility model, the screw extruder with adjustable exhaust port area also includes a fixing part, a connecting portion is provided at the bottom of the exhaust connection device, a connecting hole is provided on the connecting portion, a mounting hole is provided on the extrusion barrel, and the fixing part is passed through the connecting hole to extend into the mounting hole and be threadedly connected to the extrusion barrel.
[0014] According to some embodiments of the utility model, the fixing member is a screw, a washer is sleeved on the fixing member, the lower end surface of the washer abuts against the upper end surface of the connecting portion, and the upper end surface of the washer abuts against the end of the fixing member.
[0015] According to some embodiments of the utility model, the screw extruder with adjustable exhaust port area also includes: a frame and a transmission device; the extrusion barrel is fixed on the frame; the transmission device is arranged on the frame, and the transmission end of the transmission device is transmission-connected to the extrusion screw, the extrusion screw is penetrated in the extrusion cavity of the extrusion barrel, and the transmission device is suitable for driving the screw to spirally move in the extrusion cavity to promote the flow of slurry.
[0016] The technical solution of the utility model has the following advantages:
[0017] The screw extruder with adjustable exhaust port area provided by the utility model is provided with a cover plate between the exhaust port and the exhaust device of the extrusion barrel, and the cover plates are provided with multiple cover plates, and the multiple cover plates are respectively provided with exhaust grooves of different specifications, and any cover plate is provided on the exhaust port so that the exhaust groove is connected with the extrusion chamber, and by replacing the cover plate, the exhaust grooves of different specifications are covered on the exhaust port to change the exhaust area of the exhaust port, thereby solving the problem of slurry overflow or mud film formation at the exhaust port due to the constant size of the exhaust port, and ensuring the normal operation of the vacuum system. By providing multiple cover plates, the same equipment can be adapted to various slurry modification requirements, improve versatility, and further reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 It is a schematic structural diagram of a screw extruder with adjustable exhaust port area provided in some embodiments of the utility model;
[0020] Figure 2 An exploded view of a part of the structure at the exhaust port of a screw extruder with adjustable exhaust port area provided in some embodiments of the utility model;
[0021] Figure 3 A cross-sectional view of a screw extruder with an adjustable exhaust port area at an exhaust port provided in some embodiments of the present utility model;
[0022] Figure 4 It is a schematic diagram of the structure of the cover plate provided in some embodiments of the utility model;
[0023] Figure 5 It is a schematic diagram of multiple cover plates provided in some embodiments of the utility model.
[0024] Explanation of the reference numerals: 1. extrusion cylinder; 2. cover plate; 3. exhaust connection device; 4. fixing piece; 5. frame; 6. transmission device; 11. exhaust port; 12. extrusion chamber; 21. exhaust groove; 22. arc structure; 23. disassembly hole; 31. connection port; 32. baffle; 33. exhaust chamber; 34. observation port; 35. end cover; 36. connection part; 41. gasket; 111. mounting hole; 361. connection hole. DETAILED DESCRIPTION
[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0029] Reference Figures 1 to 5 As shown, the utility model proposes a screw extruder with adjustable exhaust port area, comprising: an extrusion barrel 1, a cover plate 2 and an exhaust connection device 3; an exhaust port 11 is provided on the barrel wall of the extrusion barrel 1; a plurality of cover plates 2 are provided, and a plurality of exhaust grooves 21 of different specifications are respectively provided on the plurality of cover plates 2, and any cover plate 2 is suitable for being penetrated into the exhaust port 11 so that the exhaust groove 21 is connected with the extrusion cavity 12 of the extrusion barrel 1; the exhaust connection device 3 is covered on the exhaust port 11 so as to be suitable for fixing the cover plate 2 in the exhaust port 11, the exhaust connection device 3 is provided with an exhaust cavity 33 connected with the exhaust groove 21, and a connection port 31 is provided on the side wall of the exhaust connection device 3, and the connection port 31 is suitable for connecting with a vacuum device; the gas in the slurry is discharged through the exhaust groove 21, the exhaust cavity 33 and the connection port 31 in sequence under the drive of the vacuum device.
[0030] Specifically, a cover plate 2 is provided between the exhaust port 11 of the extrusion cylinder 1 and the exhaust device, and the cover plate 2 has a plurality of Figure 4 and Figure 5 As shown, multiple cover plates 2 are respectively provided with exhaust grooves 21 of different specifications, and any cover plate 2 is placed on the exhaust port 11 so that the exhaust groove 21 is connected to the extrusion cavity 12. By replacing the cover plate 2, the exhaust grooves 21 of different specifications are covered on the exhaust port 11 to change the exhaust area of the exhaust port 11, thereby solving the problem of slurry overflow or mud film formation at the exhaust port 11 due to the constant size of the exhaust port 11, and ensuring the normal operation of the vacuum system. By setting multiple cover plates 2, the same equipment can meet the requirements of multiple slurry modification, improve versatility, and further reduce costs.
[0031] By connecting the vacuum device with the connection port 31 of the exhaust connection device 3, the exhaust chamber 33 is kept in a negative pressure state. The gas generated by the expansion of the slurry flows from the extrusion chamber 12, through the exhaust groove 21 and the exhaust chamber 33, and is discharged from the connection port 31 under the suction of the vacuum device, thereby ensuring the normal extrusion of the slurry.
[0032] It is understandable that the cover plate 2 is replaced according to the characteristics of the slurry so that exhaust grooves 21 of different specifications cover the exhaust port 11 to adjust the exhaust area of the exhaust port 11, avoid overflow of the slurry or formation of a mud film at the exhaust port 11, and ensure the normal operation of the vacuum device.
[0033] Reference Figure 2 and Figure 3 As shown, in some embodiments of the present invention, a baffle 32 is provided in the exhaust chamber 33, one end of the baffle 32 is connected to the side wall of the exhaust connection device 3 with a connection port 31, the baffle 32 is located below the connection port 31, and the other end of the baffle 32 extends upwardly to separate the exhaust groove 21 and the connection port 31, so that the gas flowing through the exhaust chamber 33 flows in a U-shaped route.
[0034] Specifically, a baffle 32 is arranged in the exhaust chamber 33, one end of the baffle 32 is connected to the side wall of the exhaust connection device 3 with the connection port 31, and the other end extends obliquely upward, thereby separating the exhaust groove 21 and the connection port 31, so that the gas flowing through the exhaust chamber 33 flows in a U-shaped route, which can avoid a sudden increase in negative pressure at the connection port 31 when the vacuum device is started, causing the slurry to overflow from the exhaust port 11. By setting the baffle 32, the stability of the negative pressure in the exhaust chamber 33 is improved, so that the gas can be discharged stably.
[0035] Reference Figure 3 As shown, in some embodiments of the present invention, the projection of the baffle 32 in the vertical direction is suitable for covering the cross section of the exhaust slot 21 .
[0036] It can be understood that when the projection of the baffle 32 in the vertical direction covers the cross section of the exhaust groove 21, the flow path and flow time of the gas can be effectively extended to ensure the smooth flow of the gas and avoid slurry overflow.
[0037] In some embodiments of the present invention, an observation port 34 is provided on the top of the exhaust connection device 3 , and an end cover 35 is provided on the observation port 34 .
[0038] Specifically, an observation port 34 is provided at the top of the exhaust connection device 3, and an end cover 35 is provided on the observation port 34. The end cover 35 is opened to observe the overflow situation at the exhaust port 11. When the slurry overflows or the slurry forms a mud film at the exhaust groove 21, the cover plate 2 can be replaced in time.
[0039] In some embodiments of the present invention, a circular arc structure 22 is provided at the bottom of the cover plate 2 , and the radius of the circular arc structure 22 is greater than the radius of the extrusion cavity 12 .
[0040] Specifically, an arc structure 22 is provided at the bottom of the cover plate 2, the radius of which is greater than the radius of the extrusion cavity 12. The arc structure 22 is used to avoid the screw to prevent interference with the end cover 35 when the screw moves, thereby affecting the extrusion of the slurry.
[0041] In some embodiments of the present invention, the cover plate 2 is provided with a disassembly hole 23 from top to bottom, and the disassembly hole 23 is provided with an internal thread.
[0042] Specifically, a disassembly hole 23 is opened from top to bottom on the upper end surface of the cover plate 2, and an internal thread is provided in the disassembly hole 23. When the cover plate 2 needs to be replaced, a screw is screwed into the disassembly hole 23, and the protruding part of the upper end of the screw is clamped and dragged upward to remove the cover plate 2 from the exhaust port 11 for replacement.
[0043] It can be understood that there are two disassembly holes 23 , which are respectively located on both sides of the exhaust groove 21 , so as to facilitate the cover plate 2 to be pulled upwards.
[0044] In some embodiments of the utility model, a stepped surface is provided inside the exhaust port 11 , the cover plate 2 is provided with a step suitable for matching with the stepped surface, and the upper end surface of the cover plate 2 is flush with the port of the exhaust port 11 .
[0045] Specifically, by setting a step surface in the exhaust port 11 and setting a step portion that cooperates with the step surface on the cover plate 2, when installing the cover plate 2 into the exhaust port 11, it is only necessary to squeeze the cover plate 2 into the exhaust port 11 so that the step portion of the cover plate 2 cooperates with the step surface of the exhaust port 11. To ensure the vacuum suction efficiency, the upper end surface of the cover plate 2 is flush with the port of the exhaust port 11 to ensure the sealing performance.
[0046] Reference Figure 2 As shown, in some embodiments of the utility model, the screw extruder with adjustable exhaust port area also includes a fixing member 4, a connecting portion 36 is provided at the bottom of the exhaust connection device 3, a connecting hole 361 is provided on the connecting portion 36, a mounting hole 111 is provided on the extrusion barrel 1, and the fixing member 4 is passed through the connecting hole 361 to extend into the mounting hole 111 and be threadedly connected to the extrusion barrel 1.
[0047] In some embodiments of the present invention, the fixing member 4 is a screw, and a washer 41 is sleeved on the fixing member 4 . The lower end surface of the washer 41 abuts against the upper end surface of the connecting portion 36 , and the upper end surface of the washer 41 abuts against the end of the fixing member 4 .
[0048] Specifically, a connecting portion 36 is provided at the bottom of the exhaust connecting device 3, a connecting hole 361 is provided on the connecting portion 36, a mounting hole 111 is provided on the extrusion cylinder 1, and the fixing member 4 is a screw. The fixing member 4 is passed through the connecting hole 361 to extend into the mounting hole 111 and is threadedly connected to the extrusion cylinder 1, thereby covering the exhaust connecting device 3 on the exhaust port 11.
[0049] It can be understood that a gasket 41 is sleeved on the fixing member 4, the lower end face of the gasket 41 abuts against the upper end face of the connecting portion 36, and the upper end face of the gasket 41 abuts against the end of the fixing member 4. The gasket 41 is suitable for increasing the friction between the fixing member 4 and the connecting portion 36 to avoid slipping of the fixing member 4 when tightened, thereby affecting the connection sealing performance of the exhaust connection device 3.
[0050] Reference Figure 1 As shown, in some embodiments of the utility model, the screw extruder with adjustable exhaust port area also includes: a frame 5 and a transmission device 6; the extrusion barrel 1 is fixed on the frame 5; the transmission device 6 is arranged on the frame 5, and the transmission end of the transmission device 6 is connected to the extrusion screw, and the extrusion screw is penetrated in the extrusion cavity 12 of the extrusion barrel 1, and the transmission device 6 is suitable for driving the screw to spirally move in the extrusion cavity 12 to promote the flow of slurry.
[0051] Specifically, the frame 5 provides an installation base, the exhaust port 11 is set in the middle section of the extrusion barrel 1, the transmission device 6 is installed on the frame 5, and the transmission end of the transmission device 6 is connected to the extrusion screw, thereby driving the screw to spirally move in the extrusion chamber 12 to promote the flow of the slurry.
[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A screw extruder with adjustable exhaust port area, characterized in that: include: An extrusion cylinder (1), wherein a vent (11) is provided on the cylinder wall of the extrusion cylinder (1); A cover plate (2), wherein a plurality of the cover plates (2) are provided, and a plurality of exhaust grooves (21) of different specifications are respectively provided on the plurality of cover plates (2), and any of the cover plates (2) is suitable for being inserted into the exhaust port (11) so that the exhaust groove (21) is communicated with the extrusion cavity (12) of the extrusion cylinder (1); an exhaust connection device (3) which is disposed on the exhaust port (11) to fix the cover plate (2) in the exhaust port (11); the exhaust connection device (3) is provided with an exhaust cavity (33) which is in communication with the exhaust groove (21); a connection port (31) is provided on a side wall of the exhaust connection device (3); the connection port (31) is suitable for being connected to a vacuum device; The gas in the slurry is discharged in sequence through the exhaust groove (21), the exhaust cavity (33) and the connecting port (31) under the drive of the vacuum device.
2. The screw extruder with adjustable exhaust port area according to claim 1, characterized in that: A baffle (32) is provided in the exhaust cavity (33), one end of the baffle (32) is connected to a side wall of the exhaust connection device (3) provided with the connection port (31), the baffle (32) is located below the connection port (31), and the other end of the baffle (32) extends upwardly in an inclined manner to separate the exhaust groove (21) and the connection port (31), so that the gas flowing through the exhaust cavity (33) flows in a U-shaped route.
3. The screw extruder with adjustable exhaust port area according to claim 2, characterized in that: The projection of the baffle (32) in the vertical direction is suitable for covering the cross section of the exhaust slot (21).
4. The screw extruder with adjustable exhaust port area according to any one of claims 1 to 3, characterized in that: An observation port (34) is provided on the top of the exhaust connection device (3), and an end cover (35) is provided on the observation port (34).
5. The screw extruder with adjustable exhaust port area according to claim 1, characterized in that: The bottom of the cover plate (2) is provided with an arc structure (22), and the radius of the arc structure (22) is greater than the radius of the extrusion cavity (12).
6. The screw extruder with adjustable exhaust port area according to claim 1 or 5, characterized in that: The cover plate (2) is provided with a disassembly hole (23) from top to bottom, and the disassembly hole (23) is provided with an internal thread.
7. The screw extruder with adjustable exhaust port area according to claim 1 or 5, characterized in that: The exhaust port (11) is provided with a stepped surface, the cover plate (2) is provided with a step suitable for matching with the stepped surface, and the upper end surface of the cover plate (2) is flush with the port of the exhaust port (11).
8. The screw extruder with adjustable exhaust port area according to claim 1, characterized in that: It also includes a fixing member (4), the bottom of the exhaust connection device (3) is provided with a connecting portion (36), the connecting portion (36) is provided with a connecting hole (361), the extrusion cylinder (1) is provided with a mounting hole (111), and the fixing member (4) is passed through the connecting hole (361) to extend into the mounting hole (111) and be threadedly connected to the extrusion cylinder (1).
9. The screw extruder with adjustable exhaust port area according to claim 8, characterized in that: The fixing member (4) is a screw, and a washer (41) is sleeved on the fixing member (4), the lower end surface of the washer (41) abuts against the upper end surface of the connecting portion (36), and the upper end surface of the washer (41) abuts against the end of the fixing member (4).
10. The screw extruder with adjustable exhaust port area according to claim 1, characterized in that: Also includes: A frame (5), the extrusion barrel (1) is fixed on the frame (5); A transmission device (6) is arranged on the frame (5), and a transmission end of the transmission device (6) is connected to an extrusion screw rod. The extrusion screw rod is inserted into an extrusion cavity (12) of the extrusion barrel (1). The transmission device (6) is suitable for driving the screw rod to perform spiral motion in the extrusion cavity (12) to promote the flow of slurry.