Modified plastic pulling-out cooling structure

Abstract

The utility model provides a modified plastic pull-out cooling structure which comprises a cooling water tank, a recycling water tank and a guide roll shaft, a first partition plate is arranged in the cooling water tank in the length direction of the cooling water tank, and the cooling water tank is divided into a water inlet cavity and a cooling cavity by the first partition plate; a plurality of openings are formed in the first partition plate at intervals in the length direction, and the water inlet cavity and the cooling cavity are communicated through the openings; a plurality of water inlet holes are formed in the first side of the cooling water tank at intervals in the length direction, and the water inlet holes are communicated with the water inlet cavity; a plurality of overflow holes are formed in the second side of the cooling water tank; the recycling water tank is arranged on the second side of the cooling water tank, the recycling water tank is communicated with the cooling cavity through the overflow hole, and a water outlet hole is formed in the recycling water tank; and the guide roller shaft is arranged in the cooling cavity. According to the modified plastic pulling-out cooling structure, the cooling uniformity of the plastic material strips can be improved, and the cooling effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic particle manufacturing, especially to a modified plastic pull-out cooling structure. BACKGROUND

[0002] In the plastic particle manufacturing process, plastic strands are pulled out by an extruder, and during the plastic pulling process, the modified plastic is melted at high temperature and extruded into a shape through a mold. The plastic strands after extrusion have a high temperature, and if not cooled, the plastic strands may deform, be unstable in size, or have a reduced surface quality due to heat accumulation, thus leading to the formation of plastic particles after cutting that are different from the preset size. Currently, the plastic strands are generally cooled by a water cooling method, and a cooling water tank is usually designed to be open at the top. Water inlets and outlets are arranged at the front and rear ends of the cooling water tank to connect a cooling water system, and rollers are arranged in the cooling water tank to guide the plastic strands for stable conveying in the cooling water tank.

[0003] Among them, the water inlet of the existing cooling water tank structure is generally located at the lower part of the front end of the cooling water tank. The water inside the cooling water tank requires a greater water inlet pressure, and the greater water inlet pressure makes the water in the cooling water tank unstable and has a large amount of turbulence. In addition, the water inlets and outlets arranged at the front and rear ends make the water in the cooling water tank flow unevenly, leading to unstable water flow and uneven heat transfer. Some parts of the plastic strands may not be sufficiently cooled, while other parts may be over-cooled, affecting the overall cooling effect of the plastic strands. SUMMARY

[0004] Therefore, the utility model provides a modified plastic pull-out cooling structure, aiming to improve the stability and temperature uniformity of the water in the cooling water tank to improve the cooling effect of the plastic strands.

[0005] The technical solution of the utility model is as follows:

[0006] A modified plastic pull-out cooling structure comprises:

[0007] A cooling water tank is provided with a first partition plate arranged along the length direction thereof, which divides the cooling water tank into a water inlet cavity and a cooling cavity. The first partition plate is provided with a plurality of openings arranged along the length direction at intervals, which make the water inlet cavity and the cooling cavity communicate. A first side of the cooling water tank is provided with a plurality of water inlets arranged along the length direction at intervals, which communicate with the water inlet cavity. A second side of the cooling water tank is provided with a plurality of overflow holes.

[0008] A recovery water tank is arranged at the second side of the cooling water tank, and the recovery water tank is communicated with the cooling cavity through the overflow hole, and the recovery water tank is provided with a water outlet hole;

[0009] A guide roller is arranged in the cooling cavity.

[0010] As a further optional solution, the first partition plate is in an L-shaped cross section, and the opening is located between the first partition plate and the inner side wall of the cooling water tank.

[0011] As a further optional solution, a plurality of second partition plates are arranged in the water inlet cavity, and the plurality of second partition plates are arranged at intervals along the length direction of the cooling water tank, the second partition plates divide the water inlet cavity into a plurality of water inlet sub-cavities, and one water inlet sub-cavity corresponds to one water inlet hole and one opening.

[0012] As a further optional solution, the water inlet hole is located at the upper portion of the water inlet cavity.

[0013] As a further optional solution, one water inlet hole is arranged in each 0.5m length section of the cooling water tank.

[0014] As a further optional solution, the bottom of the recovery water tank is provided with an inclined guide surface, the lowest portion of the inclined guide surface forms a recess in the bottom of the recovery water tank, and the water outlet hole is arranged in the recess.

[0015] The modified plastic pull-out cooling structure has at least the following beneficial effects relative to the prior art:

[0016] The modified plastic pull-out cooling structure divides the cooling water tank into a water inlet cavity and a cooling cavity by the first partition plate, the first partition plate can block the water flow impact of the water inlet hole, so that the water in the cooling cavity is more stable, and too much turbulence is avoided; meanwhile, the cold water provided by the water inlet cavity enters the cooling cavity from a plurality of openings, so that the temperature of the water in the cooling cavity is more uniform, and the difference in heat transfer to the plastic strip is reduced; and the water in the cooling water tank is discharged by overflow, so that the water in the cooling water tank is not uniformly flowed due to the water inlet and outlet activities between the water inlet hole and the water outlet hole; the modified plastic pull-out cooling structure can improve the cooling uniformity of the plastic strip and improve the cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 An application schematic view of the modified plastic pull-out cooling structure of the embodiment of the present application;

[0019] Figure 2 A structure schematic view of the modified plastic pull-out cooling structure of the embodiment of the present application;

[0020] Figure 3 An internal schematic view of the cooling water tank and the recovery water tank;

[0021] Figure 4 A cross-sectional schematic view of the cooling water tank and the recovery water tank;

[0022] Figure 5 An internal structure schematic view of the recovery water tank.

[0023] In the figure: 100, plastic strip;

[0024] 1, cooling water tank; 1a, water inlet cavity; 1b, cooling cavity; 1c, water inlet sub-cavity; 11, first partition plate; 12, water inlet hole; 13, overflow hole; 14, opening; 15, second partition plate;

[0025] 2, recovery water tank; 21, water outlet hole; 22, inclined guide surface; 23, recess;

[0026] 3, guide roller. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the present application will be described clearly and completely below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of the present application, it is understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0029] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation. For ordinary skilled person in the art, the specific meaning of above-mentioned terms in the utility model can be understood according to specific circumstances.

[0030] Reference Figures 1-5 An embodiment of the utility model discloses a modified plastic cooling structure that is pulled out, comprising cooling water tank 1, recycling water tank 2 and guide roller shaft 3;

[0031] The first baffle 11 is arranged in the length direction of the cooling water tank 1, and the cooling water tank 1 is divided into a water inlet cavity 1a and a cooling cavity 1b by the first baffle 11; a plurality of openings 14 are arranged on the first baffle 11 in the length direction, and the openings 14 allow the water inlet cavity 1a and the cooling cavity 1b to communicate; a plurality of water inlet holes 12 are arranged on the first side of the cooling water tank 1 in the length direction, and the water inlet holes 12 communicate with the water inlet cavity 1a; a plurality of overflow holes 13 are arranged on the second side of the cooling water tank 1; the recycling water tank 2 is arranged on the second side of the cooling water tank 1, and the recycling water tank 2 communicates with the cooling cavity 1b through the overflow holes 13; a water outlet hole 21 is arranged in the recycling water tank 2; and the guide roller shaft 3 is arranged in the cooling cavity 1b.

[0032] The length direction of the cooling water tank 1 refers to the direction in which the plastic strip 100 is conveyed in the cooling water tank 1; in order to sufficiently cool the plastic strip 100, the length of the cooling water tank 1 is preferably 4-6 m.

[0033] Specifically, the plastic strip 100 is conveyed into the cooling cavity 1b in the cooling water tank 1 after being extruded from the extruder, and the plastic strip 100 is guided by the guide roller shaft 3; the guide roller shaft 3 is a rotatable structure, which can stabilize the plastic strip 100 in the cooling water tank 1 and reduce the friction force acting on the plastic strip 100; the water inlet holes 12 and the water outlet holes 21 are connected to a cooling water system (not shown) to realize cooling water circulation; cooling water enters the water inlet cavity 1a from the water inlet holes 12, and the impact force of the cooling water when entering can be avoided to have too great an influence on the cooling cavity 1b under the block of the first baffle 11; the water in the water inlet cavity 1a enters the cooling cavity 1b stably through the openings 14, and the water in the cooling cavity 1b enters the recycling water tank 2 through the overflow holes 13 after reaching a moving liquid level, and then returns to the cooling water system through the water outlet holes 21.

[0034] Therefore, the modified plastic pulling and cooling structure divides the cooling water tank 1 into a water inlet cavity 1a and a cooling cavity 1b by the first partition plate 11, the first partition plate 11 can block the water flow impact of the water inlet hole 12, so that the water in the cooling cavity 1b is more stable, and too much turbulence is avoided; at the same time, the cold water provided by the water inlet cavity 1a enters the cooling cavity 1b from the plurality of openings 14, so that the temperature of the water in the cooling cavity 1b is more uniform, and the difference in heat transfer to the plastic strip 100 is reduced; and the water in the cooling water tank 1 is discharged by overflow, avoiding the non-uniform flow of the water in the cooling water tank 1 caused by the water inlet and outlet activities between the water inlet hole 12 and the water outlet hole 21; the modified plastic pulling and cooling structure can improve the uniformity of the cooling of the plastic strip 100 and improve the cooling effect.

[0035] In some embodiments, in order to further improve the stability of the water in the cooling cavity 1b, as shown in Figure 3 the cross section of the first partition plate 11 is L-shaped, and the opening 14 is located between the first partition plate 11 and the inner side wall of the cooling water tank 1. Therefore, the first partition plate 11 makes the water inlet cavity 1a form an L-shaped structure in cross section, and the water inlet cavity 1a can stabilize the entering cooling water, and then the cooling water enters the cooling cavity 1b from the bottom to the top through the opening 14, so that the water does not cause disturbance when entering the cooling cavity 1b.

[0036] In some embodiments, in order to further improve the uniformity of heat transfer in the cooling cavity 1b, as shown in Figure 2 and Figure 3 a plurality of second partition plates 15 are arranged in the water inlet cavity 1a, the plurality of second partition plates 15 are arranged in the length direction of the cooling water tank 1, and the second partition plates 15 divide the water inlet cavity 1a into a plurality of water inlet sub-cavities 1c, one water inlet sub-cavity 1c corresponds to one water inlet hole 12 and one opening 14. Therefore, in the length direction of the cooling water tank 1, the cooling water can be more uniformly distributed, so that the plastic strip 100 is more uniformly cooled during entering and leaving the cooling water tank 1. Preferably, one water inlet hole 12 is arranged in each 0.5m length section of the cooling water tank 1.

[0037] In some embodiments, as shown in Figure 3 or Figure 4 the water inlet hole is located at the upper part of the water inlet cavity 1a. Wherein, the water inlet hole can be higher than the liquid level line of the water inlet cavity 1a, or the water inlet hole can be close to the liquid level line of the water inlet cavity 1a (slightly lower than the liquid level line), so that the water inlet pressure at the water inlet hole is smaller, the water pumping power required by the cooling water system is reduced, and the impact force of the cooling water entering the water inlet cavity 1a is reduced.

[0038] In some embodiments, the bottom of the recovery water tank 2 is provided with an inclined guide surface 22, the lowest part of the inclined guide surface 22 makes the bottom of the recovery water tank 2 form a recess 23, and the water outlet hole 21 is arranged in the recess 23. In this way, the inclined guide surface 22 is conducive to collecting water in the recess 23, and facilitates the water to leave from the water outlet hole 21.

[0039] In the above embodiments, the description of each embodiment is focused on, and the part not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0040] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A modified plastic pull out cooling structure, characterized by, The application relates to a cooling water tank, which comprises: a cooling water tank, a first partition plate is arranged in the length direction of the cooling water tank, the first partition plate divides the cooling water tank into a water inlet cavity and a cooling cavity, a plurality of openings are arranged on the first partition plate in the length direction, the openings make the water inlet cavity and the cooling cavity communicate; a plurality of water inlet holes are arranged on the first side of the cooling water tank in the length direction, the water inlet holes communicate with the water inlet cavity; a plurality of overflow holes are arranged on the second side of the cooling water tank; a recovery water tank, which is arranged on the second side of the cooling water tank, communicates with the cooling cavity through the overflow holes, and is provided with a water outlet hole; a guide roller shaft, which is arranged in the cooling cavity.

2. The modified plastic pull out cooling structure of claim 1, wherein, The cross section of the first partition plate is L-shaped, and the openings are arranged between the first partition plate and the inner side wall of the cooling water tank.

3. The modified plastic pull out cooling structure of claim 2, wherein, A plurality of second partition plates are arranged in the water inlet cavity, the second partition plates are arranged in the length direction of the cooling water tank, the second partition plates divide the water inlet cavity into a plurality of water inlet sub-cavities, one water inlet sub-cavity corresponds to one water inlet hole and one opening.

4. The modified plastic pull out cooling structure of claim 3, wherein, The water inlet holes are arranged on the upper part of the water inlet cavity.

5. The modified plastic pull out cooling structure of claim 3, wherein, One water inlet hole is arranged in every 0.5m length section of the cooling water tank.

6. The modified plastic pulltruded cooling structure according to any one of claims 1-5, wherein, An inclined guide surface is arranged on the bottom of the recovery water tank, the lowest part of the inclined guide surface forms a concave part on the bottom of the recovery water tank, and the water outlet hole is arranged in the concave part.

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