Multi-section water cooling device for heating section of extruder

Abstract

The utility model relates to a multi-section water-cooling device for a heating section of an extruder, which is used for water-cooling refrigeration of a charging barrel of the extruder and comprises a water-retaining circular pipe, the charging barrel is sleeved in the water-retaining circular pipe, a plurality of bolts penetrate through the outer side surface of the water-retaining circular pipe, and the water-retaining circular pipe is fixed on the charging barrel through screwing of the bolts. A conveying cooling section, a melting cooling section and a metering cooling section are arranged at the positions, corresponding to the conveying section, the melting section and the metering section of the charging barrel, of the water retaining circular pipe correspondingly, and a plurality of water inlet through hole sets are formed in the conveying cooling section, the melting cooling section and the metering cooling section in the axial direction of the water retaining circular pipe at intervals correspondingly; each water inlet through hole group comprises a plurality of water inlet through holes which are formed in the circumferential direction of the water retaining circular pipe at intervals; the bottom end of the cooling water tank is connected with one end, arranged on the outer side face of the water retaining round pipe, of the water inlet through hole through a water inlet pipeline, and a water inlet pump and a water inlet valve are arranged on the water inlet pipeline. According to the utility model, the plurality of bolts are screwed and fixed on the charging barrel, so that the charging barrels with different diameter specifications can be adaptively mounted.

Description

Technical Field

[0001] The utility model relates to the technical field of water cooling of an extruder barrel, in particular to a multi-section water cooling device for a heating section of an extruder. Background Art

[0002] The barrel of a plastic extruder can be divided into a conveying section, a melting section and a metering section. When the extruder is in use, the temperature of the conveying section, the melting section and the metering section need to be controlled separately. The cooling methods of the extruder usually include air cooling and water cooling. When using water cooling to control the cooling of the extruder, a cooling water coil arranged on the outer surface of the barrel is usually used. This arrangement makes it difficult to install the water cooling device on barrels of different diameters. When assembling the water cooling device for barrels of different specifications, it is necessary to design a special-sized water cooling device according to the different specifications of the barrel, which consumes too much manpower and material resources.

[0003] Therefore, it is necessary to propose a multi-section water cooling device for the heating section of an extruder that can be adapted to be installed on the barrel of an extruder with different diameter specifications. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a multi-section water cooling device for a heating section of an extruder.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A multi-section water cooling device for a heating section of an extruder, used for water cooling of a barrel of an extruder, comprising:

[0007] A water retaining circular tube, wherein the barrel is sleeved in the water retaining circular tube, a plurality of bolts penetrate the outer side surface of the water retaining circular tube, and the water retaining circular tube is screwed and fixed to the barrel by the bolts, and the positions of the conveying section, melting section and metering section of the water retaining circular tube corresponding to the barrel are respectively arranged as a conveying cooling section, a melting cooling section and a metering cooling section, and the conveying cooling section, the melting cooling section and the metering cooling section are respectively arranged with a plurality of water inlet through hole groups at intervals along the axial direction of the water retaining circular tube, and each group of the water inlet through hole groups includes a plurality of water inlet through holes arranged at intervals along the circumferential direction of the water retaining circular tube, and a nozzle is arranged at one end of the water inlet through hole arranged on the inner side surface of the water retaining circular tube;

[0008] A cooling water tank, wherein the bottom end of the cooling water tank is connected to the water inlet through hole arranged on one end of the outer side surface of the water retaining circular pipe through a water inlet pipeline, and the water inlet pipeline is provided with a water inlet pump and a water inlet valve.

[0009] The utility model is further configured to include a recovery water tank, the top of which is provided with a plurality of return water pipes for collecting cooling water discharged from the water retaining circular pipe, the bottom of the recovery water tank is connected to the top of the cooling water tank via a recovery pipe line, and the recovery pipe is provided with a recovery pump and a recovery valve.

[0010] The utility model is further configured as follows: it also includes a recovery groove, the bottom end of the opening on either side of the water retaining circular tube extends along the length direction of the water retaining circular tube to the opening on the other side of the water retaining circular tube to form a drain outlet, the recovery groove is fixedly connected to the lower end of the water retaining circular tube, the recovery groove is inclined toward either end of the water retaining circular tube, the projection of the drain outlet on the recovery groove completely falls into the recovery groove, there is one return water pipe, and the return water pipe is arranged away from the pipe mouth of the recovery water tank and close to the end of the recovery groove inclined downward.

[0011] The utility model is further configured as follows: there are two return water pipes, and the pipe openings of the two return water pipes away from the recovery water tank are respectively arranged close to the openings on both sides of the water retaining circular pipe.

[0012] The utility model is further configured as follows: each group of the water inlet through holes includes three water inlet through holes, and the three water inlet through holes are composed of two water inlet through holes symmetrically arranged on the left and right sides of the water retaining circular tube and with their axes horizontally arranged, and one water inlet through hole arranged at the top of the water retaining circular tube and with its axis vertically arranged.

[0013] The utility model is further configured as follows: a water level window and a measuring scale line are arranged on the outer side wall of the cooling water tank.

[0014] The utility model is further configured to include a supplementary water tank, the bottom end of which is connected to the top end of the cooling water tank via a supplementary pipeline, and a supplementary pump and a supplementary valve are provided on the supplementary pipeline.

[0015] The utility model is further configured as follows: an overflow port is provided at the top of the cooling water tank.

[0016] The utility model has the following beneficial effects:

[0017] 1. By respectively arranging a plurality of water inlet through-hole groups on the conveying cooling section, the melting cooling section and the metering cooling section, the segmented water cooling control of the conveying section, the melting section and the metering section of the extruder is realized.

[0018] 2. The water retaining round pipe is screwed and fixed on the barrel by a number of bolts, realizing the adaptive installation of barrels with different diameters.

[0019] 3. By arranging a plurality of water inlet through holes in each water inlet through hole group, and arranging a nozzle for each water inlet through hole, compared with the existing cooling water coil cooling method, the cooling contact area is increased and the cooling efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0023] Figure 3 This is a schematic diagram of the overall structure of the water retaining circular pipe and the recovery trough of Example 2 of the utility model.

[0024] Reference numerals:

[0025] 1-water retaining round pipe; 2-water inlet hole; 3-cooling water tank; 4-recovery water tank; 5-recovery tank; 6-supplementary water tank;

[0026] 11-bolt; 12-drain port;

[0027] 21- nozzle;

[0028] 31-water inlet pipe; 32-overflow port;

[0029] 41-return pipe; 42-recovery pipe;

[0030] 61-Supplementary pipeline. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are 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 making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0032] In the description of the present invention, the terms "upper", "lower", "above", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0034] The following combination Figure 1-3 The utility model is described in further detail.

[0035] Example 1

[0036] Reference Figure 1-2 As shown, this embodiment provides a multi-section water cooling device for the heating section of an extruder, including: a barrel water cooling device for an extruder, characterized in that it includes:

[0037] A water retaining circular tube 1, a barrel is sleeved in the water retaining circular tube 1, a plurality of bolts 11 penetrate the outer side of the water retaining circular tube 1, the water retaining circular tube 1 is screwed and fixed on the barrel by the bolts 11, the positions of the conveying section, melting section and metering section of the water retaining circular tube 1 corresponding to the barrel are respectively set as the conveying cooling section, the melting cooling section and the metering cooling section, and the conveying cooling section, the melting cooling section and the metering cooling section are respectively provided with a plurality of water inlet through hole groups at intervals along the axial direction of the water retaining circular tube 1, each group of water inlet through hole groups includes a plurality of water inlet through holes 2 arranged at intervals along the circumferential direction of the water retaining circular tube 1, and a nozzle 21 is provided at one end of each water inlet through hole 2 arranged on the inner side of the water retaining circular tube 1;

[0038] The cooling water tank 3 has its bottom end connected to the water inlet through hole 2 disposed on one end of the outer side of the water retaining circular pipe 1 through a water inlet pipe 31 , and a water inlet pump and a water inlet valve are disposed on the water inlet pipe 31 .

[0039] Specifically, each group of water inlet holes includes three water inlet holes 2, which are composed of two water inlet holes 2 symmetrically arranged on the left and right sides of the water retaining circular tube 1 with horizontal axes, and one water inlet hole 2 arranged at the top of the water retaining circular tube 1 with vertical axes.

[0040] The bolts 11 arranged vertically through the axis bear the main vertical load and part of the horizontal load from the water retaining circular pipe 1 , and the bolts 11 arranged horizontally through the axis bear the main horizontal load and part of the vertical load from the water retaining circular pipe 1 .

[0041] The installation method of the water retaining circular tube 1 on the barrel of this embodiment is: first determine and set the length of the part of the vertically arranged bolt 11 extending into the water retaining circular tube 1, this length determines the diameter of the barrel that can be installed, the longer the diameter of the barrel, the shorter the length, the shorter the diameter of the barrel, the longer the length, and then screw the horizontally arranged bolt 11 in the direction away from the water retaining circular tube 1 to ensure that the barrel can be accommodated in the water retaining circular tube 1, and then abut the top of the barrel with the vertically arranged bolt 11 to place the water retaining circular tube 1 on the barrel, and finally screw the horizontally arranged bolts 11 on both sides of the barrel respectively to complete the final fixation of the water retaining circular tube 1.

[0042] In order to recycle cooling water to achieve circulating cooling, as a further improvement, it also includes a recovery water tank 4. The top of the recovery water tank 4 is provided with a plurality of return water pipes 41 for collecting the cooling water discharged from the water retaining circular pipe 1. There are two return water pipes 41. The two return water pipes 41 are far away from the pipe openings of the recovery water tank 4 and are respectively arranged close to the openings on both sides of the water retaining circular pipe 1. The bottom end of the recovery water tank 4 is connected to the top of the cooling water tank 3 through a recovery pipe 42. The recovery pipe 42 is provided with a recovery pump and a recovery valve.

[0043] In order to facilitate checking the cooling water level in the cooling water tank 3 , as a further improvement, a water level window and a measuring scale are provided on the outer side wall of the cooling water tank 3 .

[0044] As a further improvement, a supplementary water tank 6 is further included, the bottom end of the supplementary water tank 6 is connected to the top end of the cooling water tank 3 through a supplementary pipeline 61, and a supplementary pump and a supplementary valve are provided on the supplementary pipeline.

[0045] Since the cooling circulation system provided in this embodiment is an open cooling system, the cooling water after completing the heat absorption work will directly contact the external air within a certain period of time. Since the higher temperature cooling water will be partially evaporated and lost at this time, a supplementary water tank 6 is set to timely supplement the missing cooling water in the cooling water tank 3.

[0046] As a further improvement, an overflow port 32 is provided at the top of the cooling water tank 3 .

[0047] When the amount of cooling water in the cooling water tank 3 reaches the overflow water level of the overflow port 32, more cooling water transported into the cooling water tank 3 is sent into the external system through the overflow port 32 to prevent the water pressure of the cooling water system from being too high.

[0048] Example 2

[0049] Reference Figure 3 As shown, in order to improve the adaptability of the utility model to a larger unit flow rate of cooling water, Example 2 proposes an improvement based on Example 1, and also includes a recovery trough 5. The bottom end of the opening on either side of the water retaining circular tube 1 extends along the length direction of the water retaining circular tube 1 to the opening on the other side of the water retaining circular tube 1 to form a drain outlet 12. The recovery trough 5 is fixedly connected to the lower end of the water retaining circular tube 1. The recovery trough 5 is inclined toward either end of the water retaining circular tube 1. The projection of the drain outlet 12 on the recovery trough 5 completely falls into the recovery trough 5. There is one return water pipe 41, and the return water pipe 41 is arranged away from the pipe mouth of the recovery water tank 4 and close to the end of the recovery trough 5 inclined downward.

[0050] The outflow efficiency of the cooling water flowing into the water retaining circular pipe 1 is increased by setting the drain port 12, so that the cooling water can be discharged in time when the unit flow rate of the cooling water is large. The cooling water discharged from the water retaining circular pipe 1 flows into the recovery water tank 4 through the recovery tank 5.

[0051] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-section water cooling device for the heating section of an extruder, used for water cooling of the barrel of the extruder, characterized in that: include: A water retaining circular tube, wherein the barrel is sleeved in the water retaining circular tube, a plurality of bolts penetrate the outer side surface of the water retaining circular tube, and the water retaining circular tube is screwed and fixed to the barrel by the bolts, and the positions of the conveying section, melting section and metering section of the water retaining circular tube corresponding to the barrel are respectively arranged as a conveying cooling section, a melting cooling section and a metering cooling section, and the conveying cooling section, the melting cooling section and the metering cooling section are respectively arranged with a plurality of water inlet through hole groups at intervals along the axial direction of the water retaining circular tube, and each group of the water inlet through hole groups includes a plurality of water inlet through holes arranged at intervals along the circumferential direction of the water retaining circular tube, and a nozzle is provided at one end of each of the water inlet through holes arranged on the inner side surface of the water retaining circular tube; A cooling water tank, wherein the bottom end of the cooling water tank is connected to the water inlet through hole arranged on one end of the outer side surface of the water retaining circular pipe through a water inlet pipeline, and the water inlet pipeline is provided with a water inlet pump and a water inlet valve.

2. The multi-section water cooling device for the heating section of the extruder according to claim 1, characterized in that: It also includes a recovery water tank, the top of which is provided with a plurality of return pipes for collecting cooling water discharged from the water retaining circular pipe, the bottom of the recovery water tank is connected to the top of the cooling water tank through a recovery pipe line, and the recovery pipe is provided with a recovery pump and a recovery valve.

3. The multi-section water cooling device for the heating section of the extruder according to claim 2, characterized in that: It also includes a recovery trough, wherein the bottom end of the opening on either side of the water retaining circular tube extends along the length direction of the water retaining circular tube to the opening on the other side of the water retaining circular tube to form a drain outlet, the recovery trough is fixedly connected to the lower end of the water retaining circular tube, the recovery trough is inclined toward either end of the water retaining circular tube, the projection of the drain outlet on the recovery trough completely falls into the recovery trough, and there is one return water pipe, and the return water pipe is arranged away from the pipe mouth of the recovery water tank and close to the end of the recovery trough inclined downward.

4. The multi-section water cooling device for the heating section of the extruder according to claim 2, characterized in that: There are two return water pipes, and the pipe openings of the two return water pipes away from the recovery water tank are respectively arranged close to the openings on both sides of the water retaining circular pipe.

5. The multi-section water cooling device for the heating section of the extruder according to claim 1, characterized in that: Each group of water inlet holes includes three water inlet holes, which are composed of two water inlet holes symmetrically arranged on the left and right sides of the water retaining circular tube with horizontal axes and one water inlet hole arranged at the top of the water retaining circular tube with vertical axes.

6. The multi-section water cooling device for the heating section of the extruder according to claim 1, characterized in that: A water level window and a measuring scale are arranged on the outer side wall of the cooling water tank.

7. The multi-section water cooling device for the heating section of the extruder according to claim 1, characterized in that: It also includes a supplementary water tank, the bottom end of which is connected to the top end of the cooling water tank through a supplementary pipeline, and a supplementary pump and a supplementary valve are provided on the supplementary pipeline.

8. The multi-section water cooling device for the heating section of the extruder according to claim 7, characterized in that: An overflow port is arranged at the top of the cooling water tank.

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