Double-screw extruder with cleaning function

Abstract

The utility model relates to a twin-screw extruder with a cleaning function, which belongs to the technical field of twin-screw extruders, and comprises a base, two support blocks are fixed on the upper surface of the base, an extruder body is fixed on the upper surfaces of the two support blocks, a cleaning mechanism is arranged in the extruder body, and the two support blocks are fixed on the upper surface of the base. And a cleaning mechanism is fixed on the upper surface of the extruder body. According to the double-screw extruder with the cleaning function, water in a water tank is pumped out through a first water pipe and conveyed into a second water pipe through the arranged cleaning mechanism and a first water pump, water in the second water pipe enters the extruder body to clean the interior of the extruder body, and used water enters a collecting box through a third water pipe and a fourth water pipe; a filter screen is used for filtering sewage, the filtered water enters a water tank through a fifth water pipe and a sixth water pipe, so that the water is conveniently recycled, and the extruder body is cleaned through the flowing of the water.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, in particular to a twin-screw extruder with a cleaning function. Background Art

[0002] The extruder relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the material. It can be basically classified into twin-screw extruder, single-screw extruder, multi-screw extruder and screwless extruder. The twin-screw extruder is developed based on the single-screw extruder and is currently widely used in the molding processing of extruded products.

[0003] For example, a twin-screw extruder is disclosed in a Chinese patent (publication number: CN213198714U), including a bottom plate, an upper end of the bottom plate is fixedly connected to a box body, and an upper end of the box body is fixedly connected to a support plate, an upper end of the support plate is fixedly connected to a driving motor, an output end of the driving motor is fixedly connected to a rotating shaft, an upper end of the support plate on one side of the driving motor is fixedly connected to a vertical plate, and a first pulley corresponding to the rotating shaft is rotatably connected to the side wall of the vertical plate, the rotating shaft and the first pulley are connected by a fixing mechanism, a second pulley is rotatably connected to the side wall of the vertical plate on the upper side of the first pulley, and the first pulley and the second pulley are connected by a belt, and a horizontal shell is fixedly connected to the side wall of the vertical plate away from the second pulley. The utility model can replace and clean the transmission structure in a timely manner, and increases the overall mobility of the device, thereby facilitating the movement of the device as a whole and meeting the use needs of different positions.

[0004] The above-mentioned twin-screw extruder still has certain shortcomings. The flange connection method is adopted, so that the driving motor and the first pulley can be disassembled and assembled, and the transmission structure can be replaced and cleaned in time. In addition, the vertical plate and the support plate are also connected by bolts, so that the overall structure on the side wall of the vertical plate can be cleaned or replaced. However, after the twin-screw extruder is used, some residues will remain inside the cover body, and the residues cannot be effectively cleaned, which will affect the subsequent use of the twin-screw extruder and thus affect the discharging effect. Therefore, a twin-screw extruder with a cleaning function is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a twin-screw extruder with a cleaning function, which has the advantages of convenient cleaning and the like, and solves the problem of inconvenient cleaning of the prior twin-screw extruder.

[0006] To achieve the above object, the utility model provides the following technical solution: a twin-screw extruder with a cleaning function, comprising a base, two support blocks are fixed on the upper surface of the base, an extruder body is fixed on the upper surfaces of the two support blocks, a cleaning mechanism is provided inside the extruder body, and a cleaning mechanism is fixed on the upper surface of the extruder body;

[0007] The cleaning mechanism includes a water tank and a first water pump fixed to the upper surface of the extruder body, a first water pipe is fixed to the input end of the first water pump, and a second water pipe is fixed to the output end of the first water pump. The cleaning mechanism also includes a collecting box fixed to the upper surface of the base, a filter is fixed to the inner wall of the collecting box, a second water pump is fixed to the right side of the collecting box, a fifth water pipe is fixed to the input end of the second water pump, and a sixth water pipe is fixed to the output end of the second water pump. A fourth water pipe is fixed to the upper surface of the collecting box, a control valve is fixed to the upper surface of the fourth water pipe, and a third water pipe is fixed to the input end of the control valve.

[0008] Furthermore, the second water pipe is L-shaped, and the lower surface of the second water pipe is fixed to the upper surface of the extruder body.

[0009] Furthermore, the right side of the first water pipe is fixed to the left side of the water tank, and the upper surface of the third water pipe is fixed to the lower surface of the extruder body.

[0010] Furthermore, the fifth water pipe and the sixth water pipe are both L-shaped, the left side of the fifth water pipe is fixed to the right side of the collection box, and the left side of the sixth water pipe is fixed to the right side of the water tank.

[0011] Furthermore, the cleaning mechanism includes a motor fixed to the right side of the extruder body, the output shaft of the motor is fixed with a first rotating rod that penetrates and extends into the interior of the extruder body, the cleaning mechanism also includes a second rotating rod and a third rotating rod that are rotatably connected to the right side of the inner cavity of the extruder body through a bearing seat, the outer surfaces of the first rotating rod and the second rotating rod are provided with a transmission assembly, the outer surface of the second rotating rod is fixed with a first gear, the outer surface of the third rotating rod is fixed with a second gear that meshes with the first gear, the outer surfaces of the first rotating rod and the third rotating rod are both fixed with a fixing frame, and the left sides of the first rotating rod and the third rotating rod are both fixed with a spiral rod.

[0012] Furthermore, the transmission assembly includes a first sprocket fixed to the outer surface of the first rotating rod and a second sprocket fixed to the outer surface of the second rotating rod, and the outer surfaces of the first sprocket and the second sprocket are transmission-connected with chains.

[0013] Furthermore, a partition is fixed to the inner cavity wall of the extruder body, and two rotating holes are opened on the left side of the partition. The first rotating rod is rotatably connected to the inside of the front rotating hole through a bearing, the third rotating rod is rotatably connected to the inside of the rear rotating hole through a bearing, and the left side of the second rotating rod is rotatably connected to the right side of the partition through a bearing seat.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The twin-screw extruder with a cleaning function uses a cleaning mechanism. The first water pump sends the water in the water tank to the second water pipe through the first water pipe. The water in the second water pipe enters the extruder body to clean the inside of the extruder body. The used water enters the collection box through the third water pipe and the fourth water pipe. The filter screen filters the sewage. The filtered water enters the water tank through the fifth water pipe and the sixth water pipe, which is convenient for the recycling of water and the extruder body is cleaned by the flow of water.

[0016] 2. The twin-screw extruder with a cleaning function, through the cleaning mechanism, the motor drives the first rotating rod to rotate, the first rotating rod drives the second rotating rod and the first gear to rotate together through the transmission assembly, the first gear drives the second gear and the third rotating rod to rotate together, the first rotating rod and the third rotating rod drive the two spiral rods to rotate in the opposite direction at the same time, which is convenient for extruding raw materials, and the first rotating rod and the third rotating rod drive the two fixed frames to rotate, so as to scrape the inside of the extruder body to prevent the raw materials from adhering to the inner cavity wall of the extruder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a three-dimensional appearance diagram of the extruder body of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the cleaning mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the top view of the cleaning mechanism of the utility model.

[0021] In the figure: 1 base, 2 support block, 3 extruder body, 4 cleaning mechanism, 401 water tank, 402 first water pipe, 403 first water pump, 404 second water pipe, 405 third water pipe, 406 control valve, 407 fourth water pipe, 408 collection box, 409 filter, 410 fifth water pipe, 411 second water pump, 412 sixth water pipe, 5 cleaning mechanism, 501 motor, 502 first rotating rod, 503 second rotating rod, 504 transmission assembly, 505 first gear, 506 second gear, 507 third rotating rod, 508 fixing frame, 509 screw 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] See also Figures 1 to 2 A twin-screw extruder with a cleaning function in this embodiment includes a base 1, two support blocks 2 are fixed on the upper surface of the base 1, an extruder body 3 is fixed on the upper surfaces of the two support blocks 2, a cleaning mechanism 5 is provided inside the extruder body 3, and a cleaning mechanism 4 is fixed on the upper surface of the extruder body 3. The cleaning mechanism 4 and the cleaning mechanism 5 cooperate to clean the inside of the extruder body 3 for convenience in subsequent use.

[0024] See also Figure 3 In order to facilitate cleaning of the extruder body 3, the cleaning mechanism 4 in this embodiment includes a water tank 401 and a first water pump 403 fixed on the upper surface of the extruder body 3, the interior of the water tank 401 is filled with water, the input end of the first water pump 403 is fixed with a first water pipe 402, and the output end of the first water pump 403 is fixed with a second water pipe 404, the cleaning mechanism 4 also includes a collecting box 408 fixed on the upper surface of the base 1, the inner wall of the collecting box 408 is fixed with a filter screen 409 for filtering water and collecting waste in the water, and the right side of the collecting box 408 is fixed with a filter screen 409 for filtering water and collecting waste in the water. A second water pump 411 is provided, a fifth water pipe 410 is fixed to the input end of the second water pump 411, a sixth water pipe 412 is fixed to the output end of the second water pump 411, a fourth water pipe 407 is fixed to the upper surface of the collecting box 408, a control valve 406 is fixed to the upper surface of the fourth water pipe 407, a third water pipe 405 is fixed to the input end of the control valve 406, and the water inside the extruder body 3 is controlled by the control valve 406 to enter the collecting box 408, so that the water can stay in the extruder body 3 for a longer time, thereby improving the cleaning effect of the extruder body 3.

[0025] Among them, the second water pipe 404 is L-shaped, and the lower surface of the second water pipe 404 is fixed to the upper surface of the extruder body 3, so as to deliver water to the inside of the extruder body 3. The right side of the first water pipe 402 is fixed to the left side of the water tank 401, so that the first water pump 403 can pump water out of the water tank 401. The upper surface of the third water pipe 405 is fixed to the lower surface of the extruder body 3, so that the water can enter the collection box 408.

[0026] In addition, the fifth water pipe 410 and the sixth water pipe 412 are both L-shaped. The left side of the fifth water pipe 410 is fixed to the right side of the collection box 408, and the left side of the sixth water pipe 412 is fixed to the right side of the water tank 401, so that the filtered water can enter the water tank 401 through the fifth water pipe 410 and the sixth water pipe 412.

[0027] In the cleaning mechanism 4 of this embodiment, the first water pump 403 sends the water in the water tank 401 to the second water pipe 404 through the first water pipe 402, and the water in the second water pipe 404 enters the extruder body 3 to clean the inside of the extruder body 3. The used water will enter the collection box 408 through the third water pipe 405 and the fourth water pipe 407. The filter screen 409 filters the sewage, and the filtered water enters the water tank 401 through the fifth water pipe 410 and the sixth water pipe 412, so as to facilitate the recycling of water.

[0028] See also Figure 4 In order to facilitate the cleaning of the extruder body 3, the cleaning mechanism 5 in this embodiment includes a motor 501 fixed to the right side of the extruder body 3, and the output shaft of the motor 501 is fixed with a first rotating rod 502 that penetrates and extends into the inside of the extruder body 3. The cleaning mechanism 5 also includes a second rotating rod 503 and a third rotating rod 507 that are rotatably connected to the right side of the inner cavity of the extruder body 3 through a bearing seat. The outer surfaces of the first rotating rod 502 and the second rotating rod 503 are provided with a transmission assembly 504. The first rotating rod 502 drives the second rotating rod 503 to rotate through the transmission assembly 504. The second rotating rod 503 A first gear 505 is fixed on the outer surface, and a second gear 506 meshing with the first gear 505 is fixed on the outer surface of the third rotating rod 507. The first gear 505 rotates to drive the second gear 506 and the third rotating rod 507 to rotate together. A fixing frame 508 is fixed on the outer surface of the first rotating rod 502 and the third rotating rod 507. The fixing frame 508 is L-shaped and is used to clean the inside of the extruder body 3 and scrape off the raw materials adhering to the inner cavity wall of the extruder body 3. A spiral rod 509 is fixed on the left side of the first rotating rod 502 and the third rotating rod 507 to facilitate the extrusion of the raw materials.

[0029] Among them, the transmission assembly 504 includes a first sprocket fixed to the outer surface of the first rotating rod 502 and a second sprocket fixed to the outer surface of the second rotating rod 503. The outer surfaces of the first sprocket and the second sprocket are connected by chains, and the first rotating rod 502 drives the second rotating rod 503 to rotate through the transmission assembly 504.

[0030] In addition, a partition is fixed to the inner cavity wall of the extruder body 3, and two rotating holes are opened on the left side of the partition. The first rotating rod 502 is rotatably connected to the inside of the front rotating hole through a bearing, and the third rotating rod 507 is rotatably connected to the inside of the rear rotating hole through a bearing, thereby increasing the stability of the first rotating rod 502 and the third rotating rod 507 during rotation. The left side of the second rotating rod 503 is rotatably connected to the right side of the partition through a bearing seat, thereby increasing the stability of the second rotating rod 503 during rotation.

[0031] In the cleaning mechanism 5 of this embodiment, the motor 501 drives the first rotating rod 502 to rotate, and the first rotating rod 502 drives the second rotating rod 503 and the first gear 505 to rotate together through the transmission assembly 504, and the first gear 505 drives the second gear 506 and the third rotating rod 507 to rotate together, and the two spiral rods 509 are driven by the first rotating rod 502 and the third rotating rod 507 to rotate in the opposite direction at the same time, which is convenient for extruding raw materials, and the two fixing frames 508 are driven to rotate by the first rotating rod 502 and the third rotating rod 507 to scrape the inside of the extruder body 3 to prevent the raw materials from adhering to the inner cavity wall of the extruder body 3.

[0032] The working principle of the above embodiment is:

[0033] (1) When it is necessary to clean the interior of the extruder body 3, the first water pump 403, the control valve 406 and the second water pump 411 are started. The first water pump 403 pumps out the water in the water tank 401 through the first water pipe 402 and sends it to the second water pipe 404. The water in the second water pipe 404 enters the interior of the extruder body 3 to clean the interior of the extruder body 3. The used water enters the fourth water pipe 407 through the third water pipe 405, and enters the collection box 408 through the fourth water pipe 407. The sewage is filtered through the filter screen 409. The filtered water is pumped out by the second water pump 411 through the fifth water pipe 410 and sent to the sixth water pipe 412. The water enters the water tank 401 through the sixth water pipe 412, which facilitates the recycling of water.

[0034] (2) Start the motor 501. The motor 501 drives the first rotating rod 502 and the first sprocket to rotate together. The first sprocket drives the second sprocket and the second rotating rod 503 to rotate simultaneously through the chain. The second rotating rod 503 drives the first gear 505 to rotate. The first gear 505 drives the second gear 506 and the third rotating rod 507 to rotate together. The first rotating rod 502 and the third rotating rod 507 rotate together, and the two spiral rods 509 are driven to rotate in the opposite direction at the same time to facilitate the extrusion of raw materials. The first rotating rod 502 and the third rotating rod 507 rotate simultaneously, which will drive the fixed frame 508 to rotate, and the interior of the extruder body 3 is scraped to prevent the raw materials from adhering to the inner cavity wall of the extruder body 3.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder with a cleaning function, comprising a base (1), characterized in that: Two support blocks (2) are fixed on the upper surface of the base (1), an extruder body (3) is fixed on the upper surfaces of the two support blocks (2), a cleaning mechanism (5) is provided inside the extruder body (3), and a cleaning mechanism (4) is fixed on the upper surface of the extruder body (3); The cleaning mechanism (4) comprises a water tank (401) and a first water pump (403) fixed to the upper surface of the extruder body (3); a first water pipe (402) is fixed to the input end of the first water pump (403); a second water pipe (404) is fixed to the output end of the first water pump (403); the cleaning mechanism (4) further comprises a collecting box (408) fixed to the upper surface of the base (1); a filter screen (409) is fixed to the inner wall of the collecting box (408); A second water pump (411) is fixed to the right side of the collecting box (408), a fifth water pipe (410) is fixed to the input end of the second water pump (411), a sixth water pipe (412) is fixed to the output end of the second water pump (411), a fourth water pipe (407) is fixed to the upper surface of the collecting box (408), a control valve (406) is fixed to the upper surface of the fourth water pipe (407), and a third water pipe (405) is fixed to the input end of the control valve (406).

2. A twin-screw extruder with a cleaning function according to claim 1, characterized in that: The second water pipe (404) is L-shaped, and the lower surface of the second water pipe (404) is fixed to the upper surface of the extruder body (3).

3. The twin-screw extruder with cleaning function according to claim 1, characterized in that: The right side of the first water pipe (402) is fixed to the left side of the water tank (401), and the upper surface of the third water pipe (405) is fixed to the lower surface of the extruder body (3).

4. The twin-screw extruder with cleaning function according to claim 1, characterized in that: The fifth water pipe (410) and the sixth water pipe (412) are both L-shaped, the left side of the fifth water pipe (410) is fixed to the right side of the collection box (408), and the left side of the sixth water pipe (412) is fixed to the right side of the water tank (401).

5. The twin-screw extruder with cleaning function according to claim 1, characterized in that: The cleaning mechanism (5) comprises a motor (501) fixed to the right side of the extruder body (3), the output shaft of the motor (501) is fixed with a first rotating rod (502) penetrating and extending into the interior of the extruder body (3), the cleaning mechanism (5) also comprises a second rotating rod (503) and a third rotating rod (507) rotatably connected to the right side of the inner cavity of the extruder body (3) through a bearing seat, the outer surfaces of the first rotating rod (502) and the second rotating rod (503) are provided with a transmission assembly (504), the outer surface of the second rotating rod (503) is fixed with a first gear (505), the outer surface of the third rotating rod (507) is fixed with a second gear (506) meshing with the first gear (505), the outer surfaces of the first rotating rod (502) and the third rotating rod (507) are both fixed with a fixing frame (508), and the left sides of the first rotating rod (502) and the third rotating rod (507) are both fixed with a spiral rod (509).

6. A twin-screw extruder with cleaning function according to claim 5, characterized in that: The transmission assembly (504) comprises a first sprocket fixed to the outer surface of the first rotating rod (502) and a second sprocket fixed to the outer surface of the second rotating rod (503), and the outer surfaces of the first sprocket and the second sprocket are transmission-connected with chains.

7. The twin-screw extruder with cleaning function according to claim 5, characterized in that: A partition is fixed to the inner cavity wall of the extruder body (3), and two rotating holes are opened on the left side of the partition. The first rotating rod (502) is rotatably connected to the inside of the front rotating hole through a bearing, and the third rotating rod (507) is rotatably connected to the inside of the rear rotating hole through a bearing. The left side of the second rotating rod (503) is rotatably connected to the right side of the partition through a bearing seat.

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