Reinforced feeding cylinder

Abstract

The application discloses a reinforced feeding cylinder and relates to the technical field of feeding cylinders of internal mixers. The reinforced feeding cylinder comprises a cylindrical shell which is surrounded by a rear wall plate, an upper front wall, a lower front wall, a left wall plate and a right wall plate. The rear wall plate, the upper front wall, the lower front wall, the left wall plate and the right wall plate are all steel plate welded frame structures, and the overall installation size is consistent with that of a GK-shaped internal mixer. The left wall plate and the right wall plate are respectively positioned and connected with the rear wall plate and the lower front wall through positioning keys. The rear wall plate and the left wall plate are provided with switchable feeding windows. The feeding windows can selectively be installed with rear gaskets and side wall gaskets or rear cover plates and side cover plates. The rear wall plate and the left wall plate are provided with switchable feeding windows. According to requirements, the rear gaskets and the side wall gaskets or the rear cover plates and the side cover plates can be installed. The feeding cylinder can quickly realize the switching between the modes of feeding carbon black and small materials and non-feeding, does not need to replace the whole cylinder, and saves the reform cost and downtime.

Description

Technical Field

[0001] This invention relates to the field of feed cylinder technology for internal mixers, and specifically to a reinforced feed cylinder. Background Technology

[0002] An internal mixer, also known as a kneading mill, is primarily used for the plasticizing and mixing of rubber. It is a machine equipped with a pair of rotors of specific shapes that rotate relative to each other, intermittently plasticizing and mixing polymer materials under adjustable temperature and pressure in a closed environment. The feed cylinder is a crucial component of the internal mixer, used to stably and orderly feed the rubber compound and minor additives into the mixing chamber for mixing, where high strength is required.

[0003] The wall panels of the feeding cylinder of existing GK-type internal mixers are mostly made of single-layer steel plates bent and welded without reinforcing ribs. They deform after being squeezed by rubber for a long time. At the same time, the wall panels are simply tightened by bolts, resulting in large cumulative errors and poor internal cavity consistency after assembly, which affects the uniformity of rubber flow. Moreover, most models only have a fixed feeding port, which cannot accommodate both "carbon black and small material feeding" and "non-feeding" processes on the same equipment. Users need to replace the entire cylinder or add additional adapters, which is costly and results in long downtime. Summary of the Invention

[0004] The purpose of this invention is to provide a reinforced feeding cylinder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reinforced feeding cylinder, which is a cylindrical shell formed by a rear wall plate, an upper front wall, a lower front wall, a left wall plate, and a right wall plate. The rear wall plate, the upper front wall, the lower front wall, the left wall plate, and the right wall plate are all steel plate welded frame structures, which have high structural strength and the overall installation dimensions are consistent with those of the GK type internal mixer, which can be replaced as a whole and is more convenient for upgrading.

[0006] The left and right wall panels are symmetrically provided with long keyways on their outer sides, and the rear wall panel and the lower part of the front wall are provided with short keyways at corresponding positions. The left and right wall panels are respectively positioned and connected to the rear wall panel and the lower part of the front wall by positioning keys, thereby improving the dimensional accuracy of the inner cavity of the feeding cylinder and the strength against the expansion of the adhesive material.

[0007] The rear wall panel and the left wall panel are provided with switchable feeding windows, which can selectively install a rear pad and a side wall pad or a rear cover and a side cover.

[0008] The top of the rear wall panel is provided with an air injection cover plate, and the interior of the air injection cover plate is provided with multiple small air holes branching out from the slope.

[0009] The upper part of the left and right wall panels is provided with an inspection window, and the inspection window is detachably covered by an inspection cover.

[0010] Furthermore, both the rear pad and the side wall pad have a continuous downward sloping surface to prevent powder accumulation. The feeding window is connected to an auxiliary feeding device. The upper end of the side wall pad is locked to the upper auxiliary feeding device by a pressure plate and bolts to prevent it from falling off and to improve safety.

[0011] Furthermore, the upper end of the rear pad is fixed to the inner side of the rear wall panel by a detachable fastener, and the lower end of the rear pad abuts against the inner rib of the rear wall panel, making the installation of the rear pad simple and convenient, and easy to disassemble and assemble.

[0012] Furthermore, the rear cover plate has fluororubber sealing strips pressed around its four edges, and the upper surface of the rear cover plate is flush with the inner surface of the rear wall panel to prevent material accumulation and corrosion.

[0013] Furthermore, two longitudinal stiffeners are welded to the inner top and bottom of the rear wall panel, the upper part of the front wall, the lower part of the front wall, the left wall panel, and the right wall panel to improve bending stiffness.

[0014] Furthermore, the inspection cover is equipped with eccentric locking buckles around its perimeter, enabling quick disassembly, and the inner side of the inspection cover is equipped with a silicone rubber sealing gasket to ensure that dust does not leak out.

[0015] Furthermore, the air injection cover extends beyond the rear wall panel and forms an upper limit stop, and the air injection cover is externally connected to two compressed air pipes.

[0016] Furthermore, the upper part of the front wall is provided with an exhaust hole, which is connected to an external dust removal device and works in conjunction with the air injection cover to form a cleaning airflow and reduce dust escape.

[0017] Furthermore, the inner sides of the left and right wall panels are symmetrically provided with chrome-plated left and right sector plates. The chrome-plated design makes them more wear-resistant. The left and right sector plates form the feeding door of the cylindrical shell. The left and right sector plates are detachably installed on the corresponding left and right wall panels via T-shaped guide rails and set screws, respectively. The installation is simple and the replacement is also very simple.

[0018] Furthermore, the bolt holes of the rear cover plate, side cover plate and maintenance cover plate are all countersunk, with the bolt heads not exposed, eliminating dead corners for material accumulation.

[0019] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0020] 1. The rear wall panel and left wall panel are equipped with switchable feeding windows. The rear pad and side wall pad or the rear cover and side cover can be installed as needed, which can quickly realize the switching between feeding carbon black and small materials and non-feeding mode without replacing the whole cylinder, saving modification costs and downtime.

[0021] 2. The long keyways of the left and right wall panels and the short keyways of the rear and lower front wall panels are interference-fitted by positioning keys, which eliminates the cumulative error of bolt connections, improves positioning accuracy, enhances assembly consistency, and improves strength. This effectively ensures the dimensions of the inner cavity of the feeding cylinder and prevents the feeding cylinder from being stretched open by the adhesive, thus improving the overall strength of the feeding cylinder.

[0022] 3. The air injection cover plate has multiple small air holes with inclined surfaces inside. Compressed air is sprayed out through multiple small air holes, which instantly blows up the powder adhering to the cylinder wall and the inclined surface of the top bolt. The powder enters the dust removal device through the exhaust hole at the top of the front wall, which improves the powder recovery rate and reduces raw material loss.

[0023] 4. The rear wall panel, upper front wall, lower front wall, left wall panel and right wall panel are all made of steel plate welded frame structure. Two longitudinal stiffeners are welded on the upper and lower sides of the inner side, which greatly improves the overall deformation resistance and stiffness. This allows the feeding cylinder to maintain the stability of the inner cavity size even when it is running under full load for a long time. Moreover, the overall installation size is consistent with the GK type internal mixer, which can be replaced as a whole and is more convenient for upgrading.

[0024] 5. The inspection window is equipped with a detachable inspection cover. The inspection cover is equipped with an eccentric lock around its perimeter. The eccentric lock inspection cover can be opened without tools, making it convenient to disassemble, replace and maintain the strips around the top bolt. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a sectional view of the rear pad of the present invention after installation;

[0027] Figure 2 This is a cross-sectional view of the side wall pad of the present invention after installation;

[0028] Figure 3 This is a sectional view of the rear cover plate after installation according to the present invention;

[0029] Figure 4 This is a sectional view of the side cover plate of the present invention after installation;

[0030] Figure 5 This is a top view of the present invention;

[0031] Figure 6 This is a front view of the rear cover plate of the present invention;

[0032] Figure 7 This is a side view of the rear cover plate of the present invention;

[0033] Figure 8 This is a schematic diagram of the rear pad of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Rear wall panel; 2. Positioning key; 3. Rear cover plate; 4. Inspection cover plate; 5. Injection cover plate; 6. Upper part of front wall; 7. Lower part of front wall; 8. Left wall panel; 9. Rear pad plate; 10. Right wall panel; 11. Side cover plate; 12. Side wall pad plate; 13. Left sector plate; 14. Right sector plate. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] This invention provides a reinforced feeding cylinder, such as Figures 1 to 5 As shown, the cylindrical shell is formed by the rear wall panel 1, the upper front wall 6, the lower front wall 7, the left wall panel 8, and the right wall panel 10. The rear wall panel 1, the upper front wall 6, the lower front wall 7, the left wall panel 8, and the right wall panel 10 are all steel plate welded frame structures, and the overall installation dimensions are consistent with those of the GK type internal mixer. The inner sides of the rear wall panel 1, the upper front wall 6, the lower front wall 7, the left wall panel 8, and the right wall panel 10 are all welded with two longitudinal stiffeners at the top and bottom to improve bending stiffness.

[0038] The rear wall panel 1, the upper front wall 6, the lower front wall 7, the left wall panel 8, and the right wall panel 10 all adopt a steel plate welded frame structure with two longitudinal stiffeners, which greatly improves the overall deformation resistance and stiffness. This allows the feeding cylinder to maintain stable internal cavity dimensions even when operating at full load for a long time. Moreover, the overall installation dimensions are consistent with the GK type internal mixer, which can be replaced as a whole, making it more convenient to upgrade and replace.

[0039] like Figure 1 and Figure 2 As shown, long keyways are symmetrically provided on the outer sides of the left wall panel 8 and the right wall panel 10, and short keyways are provided at corresponding positions on the rear wall panel 1 and the lower part of the front wall 7. The left wall panel 8 and the right wall panel 10 are respectively positioned and connected to the rear wall panel 1 and the lower part of the front wall 7 by positioning keys 2, thereby improving the dimensional accuracy of the inner cavity of the feeding cylinder and the strength against the expansion of the adhesive material.

[0040] The long keyways of the left wall panel 8 and the right wall panel 10 are interference-fitted with the short keyways of the rear wall panel 1 and the lower part of the front wall 7 through the positioning key 2, which eliminates the cumulative error of the bolt connection, improves the positioning accuracy, enhances the consistency of the assembly, and improves the strength. This can effectively ensure the size of the inner cavity of the feeding cylinder and effectively prevent the feeding cylinder from being stretched open by the adhesive, thereby improving the overall strength of the feeding cylinder.

[0041] like Figures 1 to 4 and Figures 6 to 8As shown, the rear wall panel 1 and the left wall panel 8 are provided with interchangeable feeding windows. The feeding windows can be selectively equipped with the rear pad 9 and the side wall pad 12 or with the rear cover 3 and the side cover 11.

[0042] Both the rear pad 9 and the side wall pad 12 have a continuous downward sloping surface to prevent powder accumulation. The feeding window is connected to an auxiliary feeding device. The upper end of the side wall pad 12 is locked to the upper auxiliary feeding device by a pressure plate and bolts to prevent it from falling off and improve safety.

[0043] The upper end of the rear pad 9 is fixed to the inner side of the rear wall panel 1 by a detachable fastener, and the lower end of the rear pad 9 abuts against the inner rib of the rear wall panel 1, making the installation of the rear pad 9 simple and convenient, and easy to disassemble and assemble.

[0044] The rear cover plate 3 has fluororubber sealing strips pressed tightly around its four edges. The upper surface of the rear cover plate 3 is flush with the inner surface of the rear wall plate 1 to prevent material accumulation and corrosion.

[0045] The rear wall panel 1 and left wall panel 8 are equipped with switchable feeding windows. The rear pad 9 and side wall pad 12 can be installed, or the rear cover plate 3 and side cover plate 11 can be installed, depending on the requirements. If the customer uses it for feeding carbon black and small materials, the rear pad 9 and side wall pad 12 can be installed, and then the auxiliary feeding device can be connected. Both the rear pad 9 and side wall pad 12 have a continuous downward sloping surface, which can prevent material accumulation. Furthermore, the auxiliary feeding device can further secure the pads, preventing them from falling into the equipment and affecting its operation. If the customer does not use it for feeding carbon black and small materials, the pads can be omitted, and only the rear cover plate 3 and side cover plate 11 need to be installed. The embedded cover plate fills the window and covers the gap in the pad installation area, preventing material accumulation and corrosion of the pad installation area, thus providing assurance for the customer's subsequent choices.

[0046] like Figure 1 As shown, the top of the rear wall panel 1 is provided with an air injection cover plate 5, and the interior of the air injection cover plate 5 is provided with multiple small air holes branching out from the slope.

[0047] The air injection cover 5 extends beyond the rear wall panel 1 and forms an upper limit stop for the top bolt. The air injection cover 5 is connected to two compressed air pipes.

[0048] The upper part 6 of the front wall is provided with an exhaust hole, which is connected to the external dust removal device. Together with the air injection cover 5, it forms a cleaning airflow and reduces the escape of dust.

[0049] Compressed air is introduced into the air injection cover plate 5 through the compressed air pipeline, and then sprayed out from the small air holes in the air injection cover plate 5. The powder adhering to the cylinder wall and the inclined surface of the top bolt is blown up instantly and enters the dust removal device through the exhaust hole 6 on the upper part of the front wall, which improves the powder recovery rate and reduces raw material loss.

[0050] like Figure 1 and Figure 2As shown, the upper part of the left wall panel 8 and the right wall panel 10 are each provided with an inspection window, and the inspection window is detachably covered with an inspection cover 4.

[0051] The inspection cover 4 is equipped with eccentric locking buckles around its perimeter, enabling quick disassembly. The inner side of the inspection cover 4 is equipped with a silicone rubber sealing gasket to prevent dust leakage.

[0052] The eccentric locking inspection cover 4 can be opened without tools, making it easy to disassemble, replace, and maintain the strips around the top bolt.

[0053] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, chrome-plated left sector plates 13 and right sector plates 14 are symmetrically provided on the inner sides of the left wall panel 8 and the right wall panel 10. The left sector plates 13 and right sector plates 14 form the feeding gate of the cylindrical shell. The left sector plates 13 and right sector plates 14 are detachably installed on the corresponding left wall panel 8 and right wall panel 10 through T-shaped guide rails and set screws, respectively.

[0054] The bolt holes of the rear cover plate 3, side cover plate 11 and maintenance cover plate 4 are all countersunk, with the bolt heads not exposed, eliminating dead corners for material accumulation.

[0055] The left sector plate 13 and the right sector plate 14 are chrome-plated for better wear resistance. The left sector plate 13 and the right sector plate 14 are detachably installed on the corresponding left wall plate 8 and right wall plate 10 via T-shaped guide rails and set screws, respectively. The installation is simple and the replacement is also very simple.

[0056] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A reinforced feeding cylinder, comprising a cylindrical shell formed by a rear wall plate (1), an upper front wall (6), a lower front wall (7), a left wall plate (8), and a right wall plate (10), characterized in that: The rear wall panel (1), upper front wall (6), lower front wall (7), left wall panel (8) and right wall panel (10) are all steel plate welded frame structures, and the overall installation dimensions are consistent with those of the GK type internal mixer. The left wall panel (8) and the right wall panel (10) are symmetrically provided with long keyways on their outer sides, and the rear wall panel (1) and the lower part of the front wall (7) are provided with short keyways at corresponding positions. The left wall panel (8) and the right wall panel (10) are respectively positioned and connected to the rear wall panel (1) and the lower part of the front wall (7) by positioning keys (2). The rear wall panel (1) and the left wall panel (8) are provided with interchangeable feeding windows, and the feeding windows are equipped with a rear pad (9) and a side wall pad (12) or a rear cover plate (3) and a side cover plate (11). The top of the rear wall panel (1) is provided with an air injection cover plate (5), and the interior of the air injection cover plate (5) is provided with multiple small air holes branched out from the inclined surface; The upper part of the left wall panel (8) and the right wall panel (10) are each provided with an inspection window, and the inspection window is provided with an inspection cover plate (4) that can be detachably installed. The rear pad (9) and the side wall pad (12) both have a downwardly sloping continuous slope. The feeding window is connected to an auxiliary feeding device. The upper end of the side wall pad (12) is locked to the upper auxiliary feeding device by a pressure plate and bolts. The upper end of the rear pad (9) is fixed to the inner side of the rear wall panel (1) by a detachable fastener, and the lower end of the rear pad (9) abuts against the inner rib of the rear wall panel (1). The rear cover plate (3) has fluororubber sealing strips pressed around its four sides, and the upper surface of the rear cover plate (3) is flush with the inner surface of the rear wall plate (1).

2. The reinforced feeding cylinder according to claim 1, characterized in that: The inner sides of the rear wall panel (1), the upper part of the front wall (6), the lower part of the front wall (7), the left wall panel (8), and the right wall panel (10) are all welded with two longitudinal stiffeners.

3. The reinforced feeding cylinder according to claim 1, characterized in that: The inspection cover (4) is provided with eccentric locking buckles around its perimeter, and the inner side of the inspection cover (4) is provided with a silicone rubber sealing gasket.

4. The reinforced feeding cylinder according to claim 1, characterized in that: The air injection cover (5) extends beyond the rear wall panel (1) and forms an upper limit position for the top bolt. The air injection cover (5) is connected to two compressed air pipes.

5. The reinforced feeding cylinder according to claim 1, characterized in that: The upper part (6) of the front wall is provided with an exhaust hole, which is connected to an external dust removal device.

6. The reinforced feeding cylinder according to claim 1, characterized in that: The inner sides of the left wall panel (8) and the right wall panel (10) are symmetrically provided with chrome-plated left fan-shaped plates (13) and right fan-shaped plates (14). The left fan-shaped plates (13) and right fan-shaped plates (14) form the feeding gate of the cylindrical shell. The left fan-shaped plates (13) and right fan-shaped plates (14) are detachably installed on the corresponding left wall panel (8) and right wall panel (10) by means of T-shaped guide rails and set screws.

7. The reinforced feeding cylinder according to claim 1, characterized in that: The bolt holes of the rear cover plate (3), side cover plate (11) and maintenance cover plate (4) are all countersunk.

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