Filtering device and circulating system for underwater granulator

Abstract

The utility model provides a filtering device and a circulating system for an underwater granulator, which are mounted at the non-end part of a circulating pipe in the underwater granulator and comprise a glass pipe and a filter screen hopper arranged in the glass pipe, the height of the glass pipe is not less than that of the filter screen hopper, and the glass pipe is connected with the filter screen hopper; wherein the glass tube is a hollow transparent tube. According to the filtering device for the underwater granulator disclosed by the utility model, the detachable filter screen hopper is arranged, so that on one hand, large irregular material blocks such as adhesion or caking and the like in the production process can be filtered, the circulating cooling pipe is further prevented from being blocked, and the problem that time and labor are wasted when the circulating cooling pipe is cleaned in the prior art is solved; and the damage to the underwater granulator caused by the adhered or caked materials can be avoided, so that the underwater granulator is effectively protected.

Description

Technical Field

[0001] This utility model belongs to the technical field of underwater cutting and granulation systems for plastic pelletizing equipment, specifically relating to a filtration device and circulation system for an underwater pelletizer. Background Technology

[0002] Underwater pelletizers are a type of equipment used in the production of polymer granulation. They cut and granulate the material underwater using a cutting blade. They offer advantages such as small footprint, wide cutting range, simple operation, environmental friendliness, and high output, and are now widely used in the processing of semi-finished polymer products. However, underwater pelletizers also have certain problems during use. Underwater pelletizers typically have a circulation system to ensure the continuity and efficiency of the pelletizing process. This circulation system usually includes circulating cooling pipes, which transport water to the cutting area and then guide the water back for reuse after use. These circulating cooling pipes are generally designed to be quite long and, to save space, are usually coiled above the production equipment. Because underwater pelletizers operate in a closed water circulation system, problems such as material adhesion and clumping can occur when materials are changed, due to changes in material properties, blockage of the die, damage to the cutting blade, or malfunctions in the pelletizing system. Once this happens, the adhered or clumped material will be carried by the water flow to block the circulating cooling pipes, making cleaning extremely difficult. Before cleaning, the circulating cooling pipes need to be removed, and then inspected and cleaned. The whole process takes a lot of time, wastes manpower and resources, and affects production efficiency. Even if the clumps of material do not block the circulating cooling pipes, the cooled material will still damage the dewatering machine downstream, reducing its service life.

[0003] Therefore, developing a detachable filtration device that can filter out large, irregular material lumps such as agglomerates or clusters that occur during the production process, thereby preventing blockage of the circulating cooling pipes and solving the problem of time-consuming and labor-intensive cleaning of circulating cooling pipes in the existing technology, while also avoiding damage to the underwater pelletizer caused by agglomerated or clustered materials, has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art and to provide a filtration device and circulation system for an underwater pelletizer.

[0005] One of the objectives of this invention is to provide a filtration device for an underwater pelletizer, which is installed at the non-end of the circulation pipe in the underwater pelletizer. The device includes a glass tube and a filter hopper disposed inside the glass tube. The height of the glass tube is not less than the height of the filter hopper, and the glass tube is connected to the filter hopper. The glass tube is a hollow transparent tube.

[0006] In a preferred embodiment of this utility model,

[0007] The filter hopper includes a filter structure and a base disposed below the filter structure, and the filter structure is connected to the base;

[0008] Preferably, the filter structure is detachably connected to the base.

[0009] In a preferred embodiment of this utility model, the filter structure includes:

[0010] The filter screen is shaped like an inverted frustum, hollow inside with openings on both the top and bottom surfaces.

[0011] The filter opening has a mesh structure and is connected to the bottom of the filter.

[0012] In a preferred embodiment of this utility model,

[0013] The aperture of the filter screen and the aperture of the filter screen are both larger than the maximum particle size of the material.

[0014] In a preferred embodiment of this utility model,

[0015] The aperture of the filter screen opening is larger than the aperture of the filter screen itself.

[0016] In a preferred embodiment of this utility model,

[0017] The filter structure also includes a large-pore filter, which is connected to the top of the filter; the pore size of the large-pore filter is larger than the pore size of the filter opening.

[0018] The second objective of this invention is to provide a circulation system for an underwater pelletizer, including the underwater pelletizer filter device described in the first objective of this invention and circulation pipes respectively connected to both ends of the filter device;

[0019] Preferably, the aperture of the filter screen is less than half the inner diameter of the circulation pipe.

[0020] In a preferred embodiment of this utility model, the top of the filter device is connected to a soft circulation pipe; the bottom of the filter device is connected to a lower circulation pipe.

[0021] In a preferred embodiment of this utility model, the filter device is connected to the flexible circulation tube via a sealing sleeve; and / or

[0022] The filter screen hopper is provided with a filter screen sealing edge below it, the glass tube is provided with a glass tube sealing edge below it, and the lower circulation pipe is provided with a circulation pipe sealing edge above it; the filter device and the lower circulation pipe are connected by the filter screen sealing edge, the glass tube sealing edge, the circulation pipe sealing edge, and the sealing sleeve.

[0023] In a preferred embodiment of this utility model,

[0024] A waterproof gasket is provided between the sealing edge of the filter screen and the sealing edge of the circulation pipe; and / or

[0025] A waterproof gasket is provided between the sealing edge of the filter screen and the sealing edge of the glass tube.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] 1. The underwater pelletizer filtration device of this utility model, by setting a detachable filter screen, can filter out large irregular material blocks such as sticking or clumping that occur during the production process, thereby preventing blockage of the circulating cooling pipe. This solves the problem of time-consuming and laborious cleaning of the circulating cooling pipe in the prior art, and also avoids damage to the underwater pelletizer caused by sticking or clumping materials, effectively protecting the underwater pelletizer.

[0028] 2. The underwater pelletizer filter of this utility model has a top connection to a flexible connecting pipe, which facilitates the removal and placement of the filter device, making the removal and placement of the filter screen more convenient and saving time and effort in the replacement operation.

[0029] 3. The underwater pelletizer filter device of this utility model has a glass tube outside the filter hopper. During the production process, the pelletizing situation can be directly observed through the glass tube, which can promptly detect larger irregular materials and deal with problems in a timely manner, making the cleaning of the filter device more efficient. Attached Figure Description

[0030] Figure 1 This is a front view schematic diagram of the filter bucket in the underwater pelletizer filtration device of this utility model;

[0031] Figure 2 This is a top view schematic diagram of the filter bucket in the underwater pelletizer filter device of this utility model;

[0032] Figure 3 This is a schematic diagram of the installation of the circulation system for the underwater pelletizer of this utility model;

[0033] Figure 4 This is a schematic diagram of the assembled glass tube and lower circulation tube in the circulation system of the underwater pelletizer of this utility model.

[0034] In the diagram, A-soft circulation pipe; B-glass tube; C-filter hopper; D-lower circulation pipe; 1-filter port; 2-filter; 3-filter sealing edge; 4-base; 5-glass tube sealing edge; 6-sealing sleeve; 7-circulation pipe sealing edge. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings:

[0036] Example 1

[0037] like Figures 1-2 As shown, this utility model provides a filtration device for an underwater pelletizer, installed at the non-end of the circulation pipe in the underwater pelletizer. It includes a glass tube B and a filter hopper C disposed within the glass tube B, with the glass tube B connected to the filter hopper C. The glass tube B is a hollow, transparent tube made of a transparent material; the height of the glass tube B is not less than the height of the filter hopper C. Preferably, the glass tube B and the filter hopper C are detachably connected. For example, the bottom of the glass tube B and the bottom of the filter hopper C can be connected by a sealing sleeve 6. In practical applications, the filtration device divides the circulation pipe into an upstream circulation pipe and a downstream circulation pipe, wherein the top of the glass tube B is connected to the upstream circulation pipe, and the bottom of the glass tube B in the filtration device is connected to the downstream circulation pipe.

[0038] In a preferred embodiment of this utility model, the filter hopper C includes a filter structure and a base 4 disposed below the filter structure. The bottom of the filter structure is connected to the base 4, which facilitates the installation and fixation of the filter structure and makes the filter structure more robust. The base 4 is annular, and the diameter of its top surface is the same as the diameter of the bottom of the filter structure. Preferably, the bottom of the filter structure and the base 4 are detachably connected; for example, they can be fixed together by screws to facilitate the replacement of the filter structure.

[0039] In a preferred embodiment of this utility model, the filter structure includes a filter opening 1 and a filter 2. Specifically, the filter 2 is in the shape of an inverted frustum, hollow inside with openings on both the top and bottom surfaces, meaning the filter 2 is formed by being enclosed by the sides. The filter opening 1 is a mesh structure, and the bottom of the filter 2 is connected to the filter opening 1, the two being integrally formed. As mentioned above, "the bottom of the filter structure is connected to the base 4," therefore, in this embodiment, the bottom of the integral structure of the filter opening 1 and the filter 2 is connected to the base 4. Preferably, the integral structure of the filter opening 1 and the filter 2 is detachably connected to the base 4. More preferably, the filter structure further includes a large-pore filter, which is connected to the top of the filter 2, and the pore diameter of the large-pore filter is larger than the pore diameter of the filter opening 1, to further intercept material blocks.

[0040] In a preferred embodiment of this invention, the aperture of both the filter screen 1 and the filter screen 2 is larger than the maximum particle size of the material, to prevent the filter hopper C from trapping particles from normal production. More preferably, the aperture of the filter screen 1 is larger than the aperture of the filter screen 2, which on the one hand allows the filter hopper C to filter out adhered or clumped materials, preventing the circulating cooling pipe from being blocked, and on the other hand reduces water resistance, wear on the filter hopper C, and energy consumption of the equipment.

[0041] Example 2

[0042] like Figures 3-4 As shown, this utility model provides a circulation system for an underwater pelletizer, including the underwater pelletizer filter device described in Embodiment 1 and circulation pipes connected to both ends of the filter device, i.e., the top of the filter device is connected to the circulation pipe, and the bottom of the filter device is connected to the circulation pipe. Specifically, in this embodiment, the top of the glass tube B in the filter device is connected to the circulation pipe, and the bottom of the glass tube B in the filter device is connected to the circulation pipe.

[0043] In a preferred embodiment of this utility model, the aperture of the filter screen 1 is less than half the inner diameter of the circulation pipe. On the one hand, this allows the filter screen hopper C to filter out sticky or clumped materials, preventing the circulation cooling pipe from being blocked. On the other hand, it can reduce water resistance, reduce wear on the filter screen hopper C, and reduce the energy consumption of the equipment.

[0044] In a preferred embodiment of this utility model, the circulation system for the underwater pelletizer includes a filter device, a flexible circulation pipe A connected to the top of the filter device, and a lower circulation pipe D connected to the bottom of the filter device. Specifically, in this embodiment, the top of the glass tube B in the filter device is connected to the flexible circulation pipe A, and the bottom of the glass tube B in the filter device is connected to the lower circulation pipe D.

[0045] The aforementioned "the aperture of the filter screen 1 is less than half the inner diameter of the circulation pipe" means, specifically in this embodiment, the aperture of the filter screen 1 is less than half the inner diameter of the soft circulation pipe A, and the aperture of the filter screen 1 is less than half the inner diameter of the lower circulation pipe D. On the one hand, this allows the filter screen hopper C to filter out sticky or clumped materials, preventing the circulation cooling pipe from being blocked. On the other hand, it can reduce water resistance, reduce wear on the filter screen hopper C, and reduce the energy consumption of the equipment.

[0046] In a preferred embodiment of this invention, the filter device is connected to the flexible circulation pipe A via a sealing sleeve 6 to prevent material leakage and the entry of external impurities. Specifically, in this embodiment, the glass tube B is connected to the flexible circulation pipe A via the sealing sleeve 6.

[0047] In a preferred embodiment of this utility model, a filter screen sealing edge 3 is provided below the filter screen hopper C, a glass tube sealing edge 5 is provided below the glass tube B, and a circulation tube sealing edge 7 is provided above the lower circulation tube D; the filter screen sealing edge 3, the glass tube sealing edge 5, and the circulation tube sealing edge 7 are all annular. The filtration device is connected to the lower circulation tube D through the filter screen sealing edge 3, the glass tube sealing edge 5, the circulation tube sealing edge 7, and the sealing sleeve 6. Specifically, in this embodiment, the glass tube B and the lower circulation tube D are connected through the filter screen sealing edge 3, the glass tube sealing edge 5, the circulation tube sealing edge 7, and the sealing sleeve 6.

[0048] Figure 3 A schematic diagram showing the installation of the glass tube B and the lower circulation tube D in the circulation system is provided. Figure 3 As shown, the filter screen sealing edge 3 is located below the base 4 in the filter screen hopper C, and is integrally formed with the base 4. The glass tube sealing edge 5 is located below the glass tube B, and the circulation tube sealing edge 7 is located above the lower circulation tube D. The inner and outer diameters of the filter screen sealing edge 3, the glass tube sealing edge 5, and the circulation tube sealing edge 7 are the same. During installation, first, place the filter screen hopper C above the lower circulation tube D, so that the bottom surface of the filter screen sealing edge 3 and the top surface of the circulation tube sealing edge 7 are in contact; second, place the glass tube B above the lower circulation tube D, ensuring that the glass tube B fits the filter screen hopper C inside it (the filter screen opening 1 in the filter screen hopper C faces upward, and the base 4 in the filter screen hopper C faces downward), so that the bottom surface of the glass tube sealing edge 5 and the top surface of the filter screen sealing edge 3 are in contact; finally, put the sealing sleeve 6 on the outside of the "filter screen sealing edge 3, glass tube sealing edge 5, and circulation tube sealing edge 7". In this way, both the glass tube B and the lower circulation pipe D are fixed and sealed, and the position of the filter hopper C between the glass tube B and the lower circulation pipe D is also fixed. It should be noted that... Figure 3 The sealing sleeve 6, which is fitted outside the "filter sealing edge 3, glass tube sealing edge 5, and circulation tube sealing edge 7", is not shown.

[0049] It should be noted that the above is merely an exemplary structure of the connection between the glass tube B and the lower circulation tube D in the circulation system, and does not constitute a limitation on the connection relationship between the two. The inner diameters of the circulation tube sealing edge 7, the filter screen sealing edge 3, and the glass tube sealing edge 5 can be increased sequentially. In this embodiment, firstly, the filter screen hopper C is placed above the lower circulation tube D, so that the filter screen sealing edge 3 is fitted outside the circulation tube sealing edge 7; secondly, the glass tube B is placed above the lower circulation tube D, ensuring that the glass tube B fits the filter screen hopper C inside it (the filter screen opening 1 in the filter screen hopper C faces upward, and the base 4 in the filter screen hopper C faces downward), so that the glass tube sealing edge 5 is fitted outside the filter screen sealing edge 3; finally, the sealing sleeve 6 is fitted outside the "filter screen sealing edge 3, glass tube sealing edge 5, and circulation tube sealing edge 7".

[0050] In a preferred embodiment of this utility model, a waterproof gasket is provided between the filter screen sealing edge 3 and the circulation pipe sealing edge 7; and / or, a waterproof gasket is provided between the filter screen sealing edge 3 and the glass tube sealing edge 5 to prevent water leakage or overflow during system use.

[0051] The method of using this utility model is as follows:

[0052] Start the circulation pump. Cooling water and the pelletized material enter the filter hopper C through the flexible circulation pipe A. Normal material can pass directly through the filter hopper C and enter the lower circulation pipe D. Adhesive or clumped material is trapped above the filter opening 1. Observe the granulation process and the trapped material through the glass tube B. If any problems are found, open the sealing sleeve 6 and remove the filter hopper C from the glass tube B for cleaning. After cleaning the filter hopper C, reinstall it according to the above steps and continue to use it.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In the description of this utility model, unless otherwise stated, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] The above technical solution is only one embodiment of the filter device and circulation system for an underwater pelletizer of this utility model. For those skilled in the art, based on the principle disclosed in this utility model, it is easy to make various types of improvements or modifications, and not limited to the technical solutions described in the above specific embodiments of this utility model. Therefore, the above description is only a preferred option and does not have a limiting meaning.

Claims

1. A filter device for an underwater pelletizer, installed at a non-end of the circulation pipe in the underwater pelletizer, characterized in that, The system includes a glass tube and a filter basket disposed within the glass tube. The height of the glass tube is not less than the height of the filter basket, and the glass tube is connected to the filter basket. The filter basket includes a filter structure and a base disposed below the filter structure, and the filter structure is detachably connected to the base. The glass tube is a hollow transparent tube. The filter structure includes: The filter screen is shaped like an inverted frustum, hollow inside with openings on both the top and bottom surfaces. The filter opening has a mesh structure and is connected to the bottom of the filter.

2. The filtration device for an underwater pelletizer according to claim 1, characterized in that, The aperture of the filter screen and the aperture of the filter screen are both larger than the maximum particle size of the material.

3. The filtration device for an underwater pelletizer according to claim 1, characterized in that, The aperture of the filter screen opening is larger than the aperture of the filter screen itself.

4. The filtration device for an underwater pelletizer according to claim 1, characterized in that, The filter structure also includes a large-pore filter, which is connected to the top of the filter; the pore size of the large-pore filter is larger than the pore size of the filter opening.

5. A circulation system for an underwater pelletizer, characterized in that, The filter device for an underwater pelletizer, as described in any one of claims 1 to 4, and circulation pipes connected to both ends of the filter device.

6. The circulation system for an underwater pelletizer according to claim 5, characterized in that, The aperture of the filter screen is less than half the inner diameter of the circulation pipe.

7. The circulation system for an underwater pelletizer according to claim 5, characterized in that, The top of the filter device is connected to the soft circulation pipe; the bottom of the filter device is connected to the lower circulation pipe.

8. The circulation system for an underwater pelletizer according to claim 7, characterized in that, The filter device is connected to the flexible circulation tube via a sealing sleeve; and / or The filter screen hopper is provided with a filter screen sealing edge below it, the glass tube is provided with a glass tube sealing edge below it, and the lower circulation pipe is provided with a circulation pipe sealing edge above it; the filter device and the lower circulation pipe are connected by the filter screen sealing edge, the glass tube sealing edge, the circulation pipe sealing edge, and the sealing sleeve.

9. The circulation system for an underwater pelletizer according to claim 8, characterized in that, A waterproof gasket is provided between the sealing edge of the filter screen and the sealing edge of the circulation pipe; and / or A waterproof gasket is provided between the sealing edge of the filter screen and the sealing edge of the glass tube.

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