Discharging device of double-screw extruder

Abstract

The utility model discloses a discharging device of a double-screw extruder, which belongs to the field of double-screw extruders and comprises a discharging device arranged at the tail end of a machine body of the double-screw extruder, a discharging die fixedly arranged with a discharging port of the discharging device and used for discharging, and a filter screen arranged in the discharging device and used for filtering raw materials. According to the discharging device, by rotating the rotating disc, the screw can be driven to rotate on the screw support, so that the frame movably connected with the other end of the screw is driven to transversely move in the mounting cavity, the frame provided with the filter screen can easily retreat from the interior of the discharging device, the filter screen can be rapidly replaced, the part replacing time is saved, and the part replacing difficulty is lowered; by pushing the discharging device, the lifting rod pushes the lifting arm to rotate, so that the lifting arm drives the supporting column to rotate on the supporting base, the discharging device can move to one side of the double-screw extruder body and can also move to the tail of the double-screw extruder body, dismounting and butt joint are convenient, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the field of twin-screw extruder equipment, in particular to a discharging device of a twin-screw 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] Chinese utility model patent with publication number CN214983016U3 discloses a twin-screw extruder discharge assembly that is easy to replace. The die head is set to be detachable by means of a threaded connection for easy replacement. Although the purpose of quickly replacing the die head is achieved, during the processing, there is also a very important filtering component in the twin-screw extruder discharge device. The above-mentioned device does not have a good function of quickly replacing the filtering component, resulting in a long replacement time, which is not conducive to improving work efficiency.

[0004] Therefore, a discharging device of a twin-screw extruder is provided to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model provides a discharging device of a twin-screw extruder, aiming to solve the problem that such devices in the background technology do not have a good function of quickly replacing filter components, resulting in a long replacement time, 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 discharge device of a twin-screw extruder, comprising a discharger installed at the tail end of the twin-screw extruder body, a discharge die fixedly installed with the discharge port of the discharger for discharging materials, and a filter installed inside the discharger for filtering raw materials:

[0009] In order to facilitate the rapid replacement of the filter and reduce the loss time of processing external replacement parts, a filter quick-change mechanism is provided on the filter, and the filter quick-change mechanism includes an installation cavity opened in the discharger and a frame installed in the installation cavity for placing the filter, and one side of the frame is provided with a screw bracket fixedly installed with the outer wall of the discharger, and 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 discharger, so as to quickly replace the filter, save replacement time and difficulty, and improve work efficiency.

[0010] Preferably, in order to ensure that the processing time is not too much 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 slot, 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 discharging port of the discharging device corresponding to the equipment, 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 facilitate the installation and adjustment of the heavier discharging device, the discharging device also includes a lifting mechanism arranged at the rear end of the twin-screw extruder body for lifting the discharging device, the lifting mechanism includes a support seat fixedly mounted on the side wall of the twin-screw extruder body, the top of the support seat is fixedly mounted with a pillar, the top of the pillar is rotatably mounted with a hanging arm, and the end of the hanging arm away from the pillar is rotatably mounted with a hanging rod for hanging the discharging device and fixedly mounted to the top of the discharging device. By pushing the discharging device, the hanging rod pushes the hanging arm to rotate, thereby causing the hanging arm to drive the pillar to rotate on the support seat, so that the discharging device can be moved to one side of the twin-screw extruder body, and can also be moved to the rear of the twin-screw extruder body, which is convenient for disassembly and docking, saving time and effort.

[0014] (III) Beneficial effects

[0015] The discharging device 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 is installed can be easily withdrawn from the inside of the discharging device, so that the filter can be quickly replaced, saving the time and difficulty of changing parts and improving work efficiency.

[0016] The discharging device pushes the discharging device so that the suspension rod pushes the suspension arm to rotate, thereby causing the suspension arm to drive the support to rotate on the support seat, so that the discharging device can be moved to one side of the twin-screw extruder body or to the tail of the twin-screw extruder body, which is convenient for disassembly and docking, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the appearance structure of a discharge device of a twin-screw extruder;

[0018] Figure 2 It is a schematic diagram of the side structure of a discharge device of a twin-screw extruder;

[0019] Figure 3 The present invention is a schematic diagram of the filter structure of a discharge device of a twin-screw extruder.

[0020] In the figure:

[0021] 1. Twin-screw extruder body; 2. Discharger; 3. Discharge mold; 4. Filter; 41. Outer frame; 42. Mesh surface; 5. Filter quick-change mechanism; 51. Installation cavity; 52. Frame; 53. Screw bracket; 54. Screw; 55. Turntable; 56. Slot; 57. Travel cavity; 58. Closing plate; 6. Lifting mechanism; 61. Support seat; 62. Pillar; 63. Boom; 64. Hanging rod. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] This embodiment provides a discharge device of a twin-screw extruder, such as Figure 1-3 As shown, the discharging device includes a discharging device 2 installed at the tail end of the twin-screw extruder body 1, a discharging die 3 fixedly installed at the discharging port of the discharging device 2 for discharging materials, and a filter screen 4 installed inside the discharging device 2 for filtering raw materials:

[0025] A filter quick-change mechanism 5 is provided on the filter 4, and the filter quick-change mechanism 5 includes an installation cavity 51 opened in the discharger 2 and a frame 52 installed in the installation cavity 51 for placing the filter 4, and a screw bracket 53 fixedly installed with the outer wall of the discharger 2 is provided on one side of the frame 52, and a screw 54 movably connected to the frame 52 for pulling the frame 52 to move and a turntable 55 installed at the other end of the screw 54 are screwed on the screw bracket 53.

[0026] When in use, by rotating the turntable 55, the screw 54 is driven to rotate on the screw bracket 53, thereby driving the frame 52 movably connected to the other end of the screw 54 to move laterally in the installation cavity 51, and the frame 52 on which the filter 4 is installed is pushed from one end of the installation cavity 51 to the outside of the discharger 2, so that the used filter 4 is directly exposed to the outside of the discharger 2, so that the filter 4 can be quickly replaced, saving the time and difficulty of changing parts, and improving work efficiency.

[0027] The side wall of the frame 52 is provided with slots 56 for inserting multiple filter screens 4 , and two oppositely facing surfaces of the outer side wall of the frame 52 are provided with passage cavities 57 for materials to pass through at positions of mesh surfaces corresponding to the multiple filter screens 4 .

[0028] When in use, at least two groups of filter screens 4 are inserted into the slots 56 in sequence, so that after the used filter screens 4 are pushed back to the outside of the discharger 2, at least one group of unused filter screens 4 is retained inside and is located at the position of the device discharge port of the discharger 2, so that when the external filter screens 4 are maintained and replaced, the filter screens 4 inside the discharger 2 continue to ensure the normal operation of the equipment and improve work efficiency.

[0029] Furthermore, the filter screen 4 is composed of an outer frame 41 and a mesh surface 42 fixedly installed inside the outer frame 41 , and the outer frames 41 of several filter screens 4 are connected end to end and inserted into the slot 56 .

[0030] When in use, the frame part between the two sets of outer frames 41 forms a closed interval in the slot 56, and the material can only flow out of the passage cavity 57 through the mesh surface 42, but cannot overflow from the side of the mesh surface 42 into the passage cavity 57, which is safer and more reliable.

[0031] Furthermore, a sealing plate 58 is installed at a position corresponding to the slot 56 on a side of the frame 52 opposite to the screw rod 54 , and the sealing plate 58 is fixed to the side wall of the frame 52 by bolts.

[0032] When in use, the sealing plate 58 is removed by turning the bolts, the used filter screen 4 in the slot 56 is taken out, and then a new filter screen 4 is replaced, and then the bolts are turned again to install the sealing plate 58 on the side of the frame 52 to re-seal the slot 56.

[0033] Example 2

[0034] Different from Example 1, Figure 1 , Figure 2 and Figure 3 As shown, the discharging device also includes a hoisting mechanism 6 arranged at the rear end of the twin-screw extruder body 1 for hoisting the discharging device 2, and the hoisting mechanism 6 includes a support seat 61 fixedly installed on the side wall of the twin-screw extruder body 1, and a pillar 62 is fixedly installed on the top of the support seat 61, and a hanging arm 63 is rotatably installed on the top of the pillar 62, and a hanging rod 64 for hanging the discharging device 2 and fixedly installed with the top of the discharging device 2 is rotatably installed on the end of the hanging arm 63 away from the pillar 62.

[0035] When in use, by pushing the discharger 2, the suspension rod 64 pushes the suspension arm 63 to rotate, so that the suspension arm 63 drives the pillar 62 to rotate on the support seat 61, so that the discharger 2 can be moved to one side of the twin-screw extruder body 1, and the discharger 2 is pushed again in the opposite direction, and the discharger 2 can be moved to the tail of the twin-screw extruder body 1 through the suspension arm 63, which is convenient for disassembly and docking, saving time and effort.

[0036] 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 discharge device for a twin-screw extruder, comprising a discharger (2) mounted at the rear end of a twin-screw extruder body (1), a discharge die (3) fixedly mounted to a discharge port of the discharger (2) for discharging materials, and a filter screen (4) mounted inside the discharger (2) for filtering raw materials, characterized in that: The filter (4) is provided with a filter quick-change mechanism (5), the filter quick-change mechanism (5) comprising an installation cavity (51) provided in the discharger (2) and a frame (52) installed in the installation cavity (51) for placing the filter (4), one side of the frame (52) is provided with a screw support (53) fixedly installed with the outer wall of the discharger (2), the screw support (53) is screwed with a screw (54) movably connected with the frame (52) for pulling the frame (52) to move, and a rotating disk (55) installed at the other end of the screw (54).

2. A discharge device for a twin-screw extruder according to claim 1, characterized in that: The side wall of the frame (52) is provided with slots (56) for inserting a plurality of filter screens (4), and two opposing surfaces of the outer side wall of the frame (52) are provided with passage cavities (57) for materials to pass through at positions corresponding to the mesh surfaces of the plurality of filter screens (4).

3. A discharge device for a twin-screw extruder according to claim 2, characterized in that: The filter screen (4) is composed of an outer frame (41) and a mesh surface (42) fixedly mounted inside the outer frame (41); a plurality of outer frames (41) of the filter screens (4) are connected end to end and inserted into the slot (56).

4. A discharge device for a twin-screw extruder according to claim 2, characterized in that: A sealing plate (58) is installed at a position corresponding to the slot (56) on the side of the frame (52) opposite to the screw rod (54), and the sealing plate (58) is fixed to the side wall of the frame (52) by bolts.

5. The discharging device of a twin-screw extruder according to claim 1, characterized in that: The discharge device also includes a lifting mechanism (6) arranged at the rear end of the twin-screw extruder body (1) for lifting the discharger (2), the lifting mechanism (6) including a support seat (61) fixedly mounted on the side wall of the twin-screw extruder body (1), a pillar (62) fixedly mounted on the top of the support seat (61), a suspension arm (63) rotatably mounted on the top of the pillar (62), and a suspension rod (64) for hanging the discharger (2) and fixedly mounted to the top of the discharger (2) rotatably mounted on the end of the suspension arm (63) away from the pillar (62).

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