Filter screen quick-changing structure of extruder discharging device

Abstract

The utility model discloses a filter screen quick-changing structure of a discharging device of an extruder, which belongs to the field of double-screw extruders and comprises a quick-changing mechanism mounted at the tail end of a double-screw extruder body and used for changing a filter screen in the discharging device. The mounting cavity is formed in the discharging device, the frame is mounted in the mounting cavity and used for placing the filter screen, a screw support fixedly mounted on the outer wall of the discharging device is arranged on one side of the frame, and a screw movably connected with the frame and used for pulling the frame to move and a rotating disc mounted at the other end of the screw are connected to the screw support in a threaded mode. According to the filter screen quick-changing structure, by rotating the rotating disc, the screw rod can be driven to rotate on the screw rod bracket, so that the frame movably connected with the other end of the screw rod is driven to transversely move in the mounting cavity, and the frame provided with the filter screen can easily retreat from the interior of the discharging device, so that the filter screen can be quickly replaced; the part replacement time and the part replacement difficulty are reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of twin-screw extruders, in particular to a filter screen quick-change structure of a material discharging device of an extruder. Background Art

[0002] Twin-screw extruder is a kind of molding processing equipment for extruded products. It is developed on the basis of single-screw extruder. It has been widely used in the molding processing of extruded products due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics. Twin-screw extruder consists of several parts such as transmission device, feeding device, barrel and screw, and the discharge device at the tail end of the barrel is the decisive component for the final molding of the finished product.

[0003] In the discharge device of the twin-screw extruder, the filter is an important component. However, since the twin-screw extruder itself is heavy, the components on it are also heavy. The filter, as a mechanism embedded in the discharge device, plays the role of filtering materials. Due to its rapid wear and tear, it needs to be replaced regularly. However, the prior art lacks a device that can effectively and quickly replace the filter in the discharge device, resulting in a lot of time and energy wasted each time the filter is replaced, which is not conducive to improving work efficiency.

[0004] Therefore, a filter screen quick-change structure for an extruder discharging device is provided to solve the above-mentioned problem. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model provides a filter screen quick-change structure for an extruder discharging device, aiming to solve the problem that the prior art proposed in the background technology lacks a device that can effectively and quickly replace the filter screen in the discharging equipment, resulting in a large amount of time and energy being wasted each time the filter screen is replaced, which is not conducive to improving work efficiency.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model provides the following technical solutions: a filter screen quick-change structure of an extruder discharge device, comprising a quick-change mechanism installed at the tail end of a twin-screw extruder body for replacing the filter screen in the discharge device:

[0009] In order to facilitate the rapid replacement of the filter and reduce the loss time of processing external replacement parts, the quick-change mechanism includes an installation cavity opened in the discharge device and a frame installed in the installation cavity for placing the filter. One side of the frame is provided with a screw bracket fixedly installed with the outer wall of the discharge device. The screw bracket is screwed with a screw movably connected to the frame for pulling the frame to move, and a turntable installed at the other end of the screw. By rotating the turntable, the screw can be driven to rotate on the screw bracket, thereby driving the frame movably connected at the other end of the screw to move laterally in the installation cavity, so that the frame on which the filter is installed can easily withdraw from the discharge device, so that the filter can be quickly replaced, saving replacement time and difficulty, and improving work efficiency.

[0010] Preferably, in order to ensure that the processing time is not excessively affected when the filter is replaced, the side wall of the frame is provided with slots for plugging in multiple filter screens, and the mesh surfaces corresponding to the multiple filter screens on the two opposite surfaces of the outer wall of the frame are provided with passage cavities for the passage of materials, and at least two groups of side-contact filter screens are arranged in the slots, so that when the used filter screen is pushed back to the outside of the discharging device, at least one group of unused filter screens is retained inside and is located at the position of the equipment discharge port of the discharging device, so that when the external filter screen is maintained and replaced, the filter screen inside the discharging device continues to ensure the normal operation of the equipment and improve work efficiency.

[0011] Preferably, in order to ensure the sealing of the filter when the material passes through, the filter consists of an outer frame and a mesh surface fixedly installed inside the outer frame. The outer frames of several filters are connected end to end and inserted into the slot. Through the closed interval formed between every two groups of outer frames, the material can only flow out of the travel cavity through the mesh surface and cannot overflow from the side of the mesh surface into the travel cavity, which is safer and more reliable.

[0012] Preferably, in order to facilitate the replacement of the filter, a sealing plate is installed at the position of the slot corresponding to the side of the frame opposite to the screw, and the sealing plate is fixed to the side wall of the frame by bolts. By disassembling and assembling the side of the sealing plate switch slot, it is convenient for workers to pull out the frame connecting filter from the sealing plate or insert it into the slot, so as to quickly replace the filter and reduce the difficulty of operation.

[0013] Preferably, in order to save effort when quickly replacing the filter after use, the filter quick-change structure also includes a pulling mechanism, which includes an insertion cavity provided on the top and bottom opposite surfaces of the inner wall of the installation cavity in contact with the frame, and a hook groove provided on the outer wall of the outer frame corresponding to the insertion cavity. By using a tool to pass through the insertion cavity and hook the hook groove, the outer frame together with the mesh surface 32 can be directly pulled out of the installation cavity for quick replacement, saving time and effort.

[0014] Preferably, in order to facilitate pulling the outer frame 31, the pulling mechanism also includes a U-shaped hook ring adapted to the hook groove, and hooks are arranged at opposite ends of the hook ring toward the U-shaped cavity. Through the special U-shaped hook ring, the hooks 54 at both ends of the U-shaped hook ring are directly extended into the cavity to hook the hook groove, thereby pulling the outer frame outward, which is convenient and quick.

[0015] (III) Beneficial effects

[0016] The filter screen quick-change structure can drive the screw to rotate on the screw bracket by rotating the turntable, thereby driving the frame movably connected to the other end of the screw to move laterally in the installation cavity, so that the frame on which the filter screen is installed can be easily withdrawn from the discharge device, so that the filter screen can be quickly replaced, saving the time and difficulty of replacing parts and improving work efficiency.

[0017] The filter screen quick-change structure has an insertion cavity formed on the top and bottom opposite surfaces of the inner wall of the installation cavity in contact with the frame, and a hook groove formed on the outer wall of the outer frame corresponding to the insertion cavity. By using a tool to penetrate into the insertion cavity and hook the hook groove, the outer frame together with the mesh surface 32 can be directly pulled out of the installation cavity for quick replacement, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front structural schematic diagram of a filter screen quick-change structure of an extruder discharge device;

[0019] Figure 2 It is a schematic diagram of the back structure of a filter screen quick-change structure of an extruder discharge device;

[0020] Figure 3 It is a schematic diagram of the filter structure of an extruder discharging device;

[0021] Figure 4 The present invention is a schematic diagram of the structure of a drawing mechanism of an extruder discharging device.

[0022] In the figure:

[0023] 1. Twin-screw extruder body; 2. Discharging device; 3. Filter screen; 31. Outer frame; 32. Mesh surface; 4. Quick-change mechanism; 41. Installation cavity; 42. Frame; 43. Screw bracket; 44. Screw; 45. Turntable; 46. Slot; 47. Passing cavity; 48. Closing plate; 5. Pull-out mechanism; 51. Inserting cavity; 52. Hook groove; 53. Hook ring; 54. Hook. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0025] Example 1

[0026] This embodiment provides a filter screen quick-change structure for an extruder discharge device, such as Figure 1-4 As shown, the filter screen quick-change structure includes a quick-change mechanism 4 installed at the tail end of the twin-screw extruder body 1 for replacing the filter screen 3 in the discharge device 2:

[0027] The quick-change mechanism 4 includes an installation cavity 41 opened in the discharge device 2 and a frame 42 installed in the installation cavity 41 for placing the filter 3. A screw bracket 43 fixedly installed with the outer wall of the discharge device 2 is provided on one side of the frame 42. A screw 44 movably connected to the frame 42 for pulling the frame 42 to move and a turntable 45 installed at the other end of the screw 44 are screwed on the screw bracket 43.

[0028] When in use, by rotating the turntable 45, the screw 44 is driven to rotate on the screw bracket 43, thereby driving the frame 42 movably connected to the other end of the screw 44 to move laterally in the installation cavity 41, and the frame 42 on which the filter 3 is installed is pushed from one end of the installation cavity 41 to the outside of the discharge device 2, so that the used filter 3 is directly exposed to the outside of the discharge device 2, so that the filter 3 can be quickly replaced, saving the time and difficulty of replacing parts, and improving work efficiency.

[0029] The side wall of the frame 42 is provided with slots 46 for inserting multiple filter screens 3 , and two oppositely facing surfaces of the outer side wall of the frame 42 are provided with passage cavities 47 for materials to pass through at positions corresponding to the mesh surfaces of the multiple filter screens 3 .

[0030] When in use, at least two groups of filter screens 3 are inserted into the slots 46 in sequence, so that after the used filter screens 3 are pushed back to the outside of the discharging device 2, at least one group of unused filter screens 3 is retained inside and is located at the position of the device discharge port of the discharging device 2 corresponding to the device discharge port, so that when the external filter screens 3 are maintained and replaced, the filter screens 3 inside the discharging device 2 continue to ensure the normal operation of the equipment and improve work efficiency.

[0031] Furthermore, the filter screen 3 is composed of an outer frame 31 and a mesh surface 32 fixedly installed inside the outer frame 31 , and the outer frames 31 of several filter screens 3 are connected end to end and inserted into the slot 46 .

[0032] When in use, the frame part between the two sets of outer frames 31 forms a closed interval in the slot 46, and the material can only flow out of the passage cavity 47 through the mesh surface 32, but cannot overflow from the side of the mesh surface 32 into the passage cavity 47, which is safer and more reliable.

[0033] Furthermore, a sealing plate 48 is installed at a position corresponding to the slot 46 on a side of the frame 42 opposite to the screw rod 44 , and the sealing plate 48 is fixed to the side wall of the frame 42 by bolts.

[0034] When in use, the sealing plate 48 is removed by turning the bolts, the used filter 3 in the slot 46 is taken out, and then a new filter 3 is replaced. Then the bolts are turned again to install the sealing plate 48 on the side of the frame 42, and the slot 46 is re-sealed to prevent the filter 3 from shifting and improve working stability.

[0035] Example 2

[0036] Different from Example 1, Figure 1 , Figure 2 and Figure 4 As shown, the filter screen quick-change structure also includes a pull-out mechanism 5, which includes an insertion cavity 51 provided on the top and bottom opposite surfaces of the inner wall of the installation cavity 41 in contact with the frame 42, and a hook groove 52 provided on the outer wall of the outer frame 31 corresponding to the insertion cavity 51. When in use, the outer frame 31 can be directly pulled out of the installation cavity 41 together with the mesh surface 32 by using a tool to pass through the insertion cavity 51 and hook the hook groove 52, so as to perform a quick replacement, saving time and effort.

[0037] Furthermore, the pulling mechanism 5 also includes a U-shaped hook ring 53 adapted to the hook groove 52, and hooks 54 are arranged in the U-shaped cavity at both ends of the hook ring 53. When in use, the hooks 54 at both ends of the U-shaped hook ring 53 are directly extended into the cavity 51 through the special U-shaped hook ring 53 to hook the hook groove 52, and the outer frame 31 is pulled outward, which is convenient and quick.

[0038] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A filter screen quick-change structure for an extruder discharge device, comprising a quick-change mechanism (4) installed at the rear end of a twin-screw extruder body (1) for replacing a filter screen (3) in a discharge device (2), characterized in that: The quick-change mechanism (4) comprises an installation cavity (41) provided in the discharging device (2) and a frame (42) installed in the installation cavity (41) for placing the filter screen (3); a screw support (43) fixedly installed with the outer wall of the discharging device (2) is provided on one side of the frame (42); a screw (44) movably connected with the frame (42) for pulling the frame (42) to move and a rotating disk (45) installed at the other end of the screw (44) are screwed on the screw support (43).

2. The filter screen quick-change structure of the extruder discharging device according to claim 1, characterized in that: The side wall of the frame (42) is provided with slots (46) for inserting a plurality of filter screens (3), and two opposing surfaces of the outer side wall of the frame (42) are provided with passage cavities (47) for materials to pass through at positions corresponding to the mesh surfaces of the plurality of filter screens (3).

3. The filter screen quick-change structure of the extruder discharging device according to claim 2 is characterized in that: The filter screen (3) is composed of an outer frame (31) and a mesh surface (32) fixedly mounted inside the outer frame (31); a plurality of outer frames (31) of the filter screens (3) are connected end to end and inserted into the slot (46).

4. The filter screen quick-change structure of the extruder discharging device according to claim 2, characterized in that: A sealing plate (48) is installed at a position corresponding to the slot (46) on the side of the frame (42) opposite to the screw rod (44), and the sealing plate (48) is fixed to the side wall of the frame (42) by bolts.

5. The filter screen quick-change structure of the extruder discharging device according to claim 3 is characterized in that: The filter screen quick-change structure also includes a pull-out mechanism (5), the pull-out mechanism (5) including an insertion cavity (51) provided on two opposite surfaces, the top and the bottom, of the inner wall of the installation cavity (41) in contact with the frame (42), and a hook groove (52) provided on the outer wall of the outer frame (31) corresponding to the insertion cavity (51).

6. The filter screen quick-change structure of the extruder discharging device according to claim 5, characterized in that: The pulling mechanism (5) further comprises a hook ring (53) arranged in a U shape and adapted to the hook groove (52), and hooks (54) are arranged in the U-shaped cavity at opposite ends of the hook ring (53).

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