A cooling water treatment device for injection molding workshop

Abstract

This utility model relates to the field of cooling water treatment technology and discloses a cooling water treatment device for an injection molding workshop. It includes a closed-circuit cooling tower body and heat exchange tubes installed within the closed-circuit cooling tower body for heat exchange. It also includes: guide plates symmetrically installed at the air inlet of the closed-circuit cooling tower body for airflow guidance; and a flow guide plate fixedly installed within the closed-circuit cooling tower body and located above the air inlet, with exhaust holes arranged in a rectangular array on the flow guide plate for air outlet. This utility model, by setting exhaust holes on the flow guide plate, installing conical tubes corresponding to the exhaust holes at the lower part of the flow guide plate, and linearly arraying corrugated baffles on the heat exchange tubes to form an exhaust path, can achieve uniform rectification and directional convergence of airflow, extend the contact time and coverage area between the airflow and the heat exchange tubes, and simultaneously guide the cooling water to fall through the exhaust holes, avoiding mutual interference between air and water. This solves the problems of chaotic airflow paths and insufficient heat exchange in the heat exchange tube area in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of cooling water treatment technology, specifically to a cooling water treatment device for an injection molding workshop. Background Technology

[0002] During the injection molding process, the continuous operation of equipment such as injection molding machines and molds generates a large amount of heat. This heat needs to be removed through a circulating cooling water system to ensure normal equipment operation and stable product quality. Especially in injection molding workshops with cleanroom requirements, not only is it necessary to control the content of pollutants such as dust and microorganisms in the workshop, but there are also higher requirements for the operating efficiency, stability, and anti-pollution capabilities of the cooling equipment. As the core cooling equipment for circulating cooling water, the performance of the closed-circuit cooling tower directly affects the energy consumption and product qualification rate of the entire production system.

[0003] The basic working process of existing closed cooling towers is as follows: outside air enters from the air inlet of the tower under the action of the fan and flows through the heat exchange tube area inside the tower; at the same time, circulating cooling water flows through the inside of the heat exchange tube under the drive of the pump, and the air contacts the surface of the heat exchange tube to exchange heat. After absorbing the heat of the cooling water, it is discharged from the top of the tower, completing the cooling process; some cooling towers are also equipped with a spray system to further enhance the heat exchange effect through water film evaporation.

[0004] However, existing closed-loop cooling towers have certain problems when adapted to cleanroom injection molding workshops. On the one hand, the air inlet lacks an effective airflow guiding structure, which easily forms turbulence or local eddies when air enters, resulting in uneven airflow distribution in the heat exchange tube area and insufficient heat exchange in some areas. On the other hand, the heat exchange tube area does not have a reasonable zoning structure, and the airflow path between the tubes is chaotic, failing to fully cover all heat exchange surfaces, resulting in low cooling efficiency. Therefore, we urgently need a cooling water treatment device for injection molding workshops to solve the above problems. Utility Model Content

[0005] This utility model provides a cooling water treatment device for injection molding workshops. By setting up a guide plate, a flow guide plate, and a baffle, it solves the problem mentioned in the background art of insufficient heat exchange in the heat exchange tube area due to the lack of an effective guiding structure at the air inlet and uneven airflow distribution.

[0006] This utility model provides the following technical solution: A cooling water treatment device for an injection molding workshop includes a closed-loop cooling tower body and heat exchange tubes installed inside the closed-loop cooling tower body for heat exchange. It also includes: guide plates symmetrically installed at the air inlet of the closed-loop cooling tower body for airflow guidance; a flow guide plate fixedly installed inside the closed-loop cooling tower body and located above the air inlet, the flow guide plate having exhaust holes arranged in a rectangular array for air outlet; and conical tubes for air collection fixedly installed at the lower part of the flow guide plate and at the exhaust hole positions; and partitions arranged linearly on the heat exchange tubes for partitioning.

[0007] As a preferred embodiment of this invention, the guide plate has guide grooves arranged in a linear array along its length to guide airflow.

[0008] As a preferred embodiment of this utility model, the angle between the guide plate and the side wall of the closed cooling tower body is in the range of 30°-45°.

[0009] As a preferred technical solution of this utility model, the exhaust hole is mainly composed of a central circular hole and multiple peripheral circular holes, and the multiple peripheral circular holes are arranged equidistantly in a ring around the center of the central circular hole.

[0010] As a preferred embodiment of this utility model, the exhaust port has an inclined groove at its outlet end for guiding cooling water.

[0011] As a preferred embodiment of this utility model, the cross-sectional projection of the partition is arranged in a wavy shape.

[0012] As a preferred embodiment of this utility model, the bottom wall of the partition abuts against the upper part of the guide plate, the partition is located between two adjacent sets of exhaust holes, and an exhaust path is formed between the two adjacent sets of partitions.

[0013] As a preferred embodiment of this utility model, the partition is made of fiberglass.

[0014] Compared with the prior art, this utility model provides a cooling water treatment device for injection molding workshops, which has the following beneficial effects: 1. In the cooling water treatment equipment of this injection molding workshop, by symmetrically setting guide plates with guide grooves at the air inlet of the closed cooling tower body, and arranging the guide plates at a 45° angle with the side wall of the tower body, the incoming air can be effectively sorted, constrained, and the airflow path can be restricted to avoid the formation of turbulence or local eddies, thus solving the problem of uneven airflow distribution at the air inlet in the prior art.

[0015] 2. In the cooling water treatment equipment of this injection molding workshop, by setting vent holes on the guide plate, installing tapered pipes at the corresponding vent holes at the bottom of the guide plate, and linearly arraying corrugated baffles on the heat exchange tubes to form an exhaust path, it is possible to achieve uniform rectification and directional convergence of airflow, extend the contact time and coverage of airflow with heat exchange tubes, and guide the cooling water to fall by the inclined groove at the exhaust end of the vent hole to avoid mutual interference between air and water. This solves the problems of chaotic airflow path and insufficient heat exchange in the heat exchange tube area in the prior art.

[0016] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model improves the cooling efficiency and operational stability of closed cooling towers, achieves uniform distribution of airflow within the tower and sufficient heat exchange in the heat exchange tube area, effectively solves the problems of turbulent airflow and insufficient heat exchange in existing technologies, and meets the needs of cleanroom injection molding workshops for efficient and stable operation of cooling equipment. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a first-view sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention from a second perspective; Figure 4 This is a schematic diagram of the partition structure of this utility model; Figure 5 This is a schematic diagram of the guide plate and exhaust hole structure of this utility model.

[0019] In the diagram: 1. Closed-loop cooling tower body; 2. Heat exchange tube; 3. Guide plate; 4. Flow guide plate; 5. Exhaust port; 6. Conical tube; 7. Baffle plate; 8. Guide groove; 9. Central circular hole; 10. Outer circular hole; 11. Inclined groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Reference Figures 1-5 A cooling water treatment device for an injection molding workshop includes a closed cooling tower body 1 and heat exchange tubes 2 installed inside the closed cooling tower body 1 for heat exchange.

[0022] Here, the closed-circuit cooling tower body 1 structure includes a tower frame, air inlet, air outlet, water collection tank, spray system, fan, and maintenance passage: the tower frame is welded from corrosion-resistant metal profiles, and the outside is covered with an insulated and anti-corrosion panel to form a closed cooling space, which is suitable for the pollution resistance requirements of cleanroom engineering; the air inlet is located on both sides of the lower part of the tower body, providing a channel for airflow, and the guide plate 3 is installed inside the air inlet; the air outlet is located at the center of the top of the tower body, with a built-in variable frequency fan, which changes the negative pressure inside the tower by adjusting the fan speed, thereby controlling the airflow volume and air velocity; the water collection tank... The tank, located at the bottom of the tower, is funnel-shaped and collects cooling water from the spray system and condensate after heat exchange. It is equipped with a water level sensor and a drain outlet for easy water quality monitoring and regular cleaning. The spray system, installed above the heat exchange tubes 2, consists of a circulating water pump, main spray pipe, branch pipes, and atomizing nozzles. It pressurizes and atomizes the cooling water in the collection tank, spraying it evenly onto the surface of the heat exchange tubes 2, enhancing heat exchange through water film evaporation. The maintenance passage is located along the inner side wall of the tower, with a width suitable for personnel passage. It is equipped with anti-slip steps and guardrails for easy daily maintenance and component replacement.

[0023] It also includes guide plates 3 symmetrically installed at the air inlet of the closed cooling tower body 1 for guiding airflow. Guide grooves 8 for guiding airflow are arranged in a linear array on the guide plates 3. The angle between the guide plates 3 and the side wall of the closed cooling tower body 1 ranges from 30° to 45°. Here, the guide plates 3 are symmetrically installed at the air inlet of the closed cooling tower body 1. The guide groove 8 can guide the air entering from the air inlet, so that the airflow flows along the direction of the guide groove 8, reducing the irregular disturbance of the airflow. At the same time, the angle between the guide plate 3 and the side wall of the closed cooling tower body 1 is preferably 45°. Within this angle range, the airflow can enter the tower relatively smoothly, and can obtain a certain initial flow direction through the tilt angle of the guide plate 3, avoiding the airflow directly impacting the internal structure of the tower and generating a large amount of turbulence, so that the airflow flows towards the guide plate 4 above the tower in a more stable and orderly state.

[0024] A guide plate 4 is fixedly installed inside the closed cooling tower body 1 and located above the air inlet. The guide plate 4 has an array of exhaust holes 5 for air outlet. The exhaust holes 5 are mainly composed of a central circular hole 9 and multiple peripheral circular holes 10. The multiple peripheral circular holes 10 are arranged equidistantly in a ring along the center of the central circular hole 9. An inclined groove 11 for guiding cooling water is opened at the air outlet end of the exhaust hole 5.

[0025] Here, the air deflector 4 adopts a layout of exhaust holes 5 with a central circular hole 9 and multiple sets of peripheral circular holes 10. This plum blossom-shaped hole structure and the centers of multiple sets of circular holes can form an equilateral triangle arrangement, which can make the airflow diffuse evenly from multiple directions and avoid the problem of uneven airflow concentration or dispersion caused by a single circular hole.

[0026] Furthermore, the inclined groove 11 at the exhaust port 5 can guide the falling cooling water to flow away along the groove, preventing the cooling water from accumulating at the exhaust port 5 or directly interfering with the airflow, thus ensuring the stable flow of the airflow.

[0027] A conical tube 6 for collecting air is fixedly installed on the lower part of the guide plate 4 and at the position of the exhaust port 5.

[0028] Here, the tapered tubes 6 at the lower part of the guide plate 4 corresponding to each exhaust hole 5 can converge and guide the airflow passing through the exhaust hole 5, so that the airflow forms a more concentrated air column before entering the heat exchange tube 2 area, improving the airflow velocity and directionality, and making it easier for the airflow to enter the subsequent heat exchange tube 2 area for heat exchange more accurately.

[0029] A linear array of partitions 7 are arranged on the heat exchange tube 2 for partitioning. The cross-sectional projection of the partition 7 is wavy. The bottom wall of the partition 7 abuts against the upper part of the guide plate 4. The partition 7 is located between two adjacent sets of exhaust holes 5, and an exhaust path is formed between the two adjacent sets of partitions 7. The partition 7 is made of fiberglass.

[0030] Here, the baffle 7 is linearly arrayed on the heat exchange tube 2 with a wavy cross-section. It is located between adjacent exhaust port groups 5 and abuts against the guide plate 4 to form an exhaust path. The wavy cross-section design effectively extends the path of airflow through the heat exchange tube 2, increases the contact time and area between the airflow and the surface of the heat exchange tube 2, and enhances the heat exchange effect. The baffle 7 is made of glass cylinder material with strong corrosion resistance, which can resist the long-term erosion of spray water and humid air in the cooling tower, with no risk of rust. It is also strong and lightweight, which can stably support the airflow impact in the area of ​​the heat exchange tube 2, while avoiding increasing the load on the tower.

[0031] Furthermore, the zoned layout divides the heat exchange tube 2 area into multiple orderly exhaust paths, allowing the airflow guided by the guide plate 4 and the conical tube 6 to flow directionally through different areas of the heat exchange tube 2. This avoids localized insufficient heat exchange caused by chaotic airflow between the heat exchange tubes 2, making the heat exchange in the entire heat exchange tube 2 area more uniform and sufficient, and significantly improving cooling efficiency.

[0032] In this utility model, the top fan of the closed cooling tower body 1 generates negative pressure. After the outside air enters from the air inlets on both sides of the tower body, it is combed by the guide grooves 8 on the symmetrically installed guide plates 3 and guided by the 45° angle to flow upward in a stable direction through the guide plate 4. The gas is gathered by the conical tube 6 to form a directional air column and is uniformly rectified through the exhaust hole 5 composed of the central circular hole 9 and the outer circular holes 10. Then, it flows through the heat exchange tube 2 area along the exhaust path divided by the corrugated partition 7, extending the contact time and area with the heat exchange tube 2 to fully exchange heat, and finally carries the heat out from the top air outlet. Meanwhile, the high-temperature circulating cooling water in the injection molding workshop flows through the heat exchange tube 2 under the drive of the pump. The spray system inside the tower pressurizes and atomizes the cooling water in the water collection tank and sprays it onto the surface of the heat exchange tube 2 to form a water film. The heat dissipation is enhanced by the evaporation of the water film. The unevaporated cooling water is guided down to the water collection tank through the inclined groove 11 at the exhaust port 5. After filtration, it re-participates in the spray or is added to the circulation system.

[0033] Components not described in detail in this article are existing technologies.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cooling water treatment device for an injection molding workshop, comprising a closed-loop cooling tower body (1) and heat exchange tubes (2) installed inside the closed-loop cooling tower body (1) for heat exchange, characterized in that, Also includes: Guide plates (3) are symmetrically installed at the air inlet of the closed cooling tower body (1) for guiding the flow. A guide plate (4) is fixedly installed inside the closed cooling tower body (1) and located above the air inlet. The guide plate (4) has a rectangular array of exhaust holes (5) for air outlet. A conical pipe (6) for air collection is fixedly installed on the lower part of the guide plate (4) and at the position of the exhaust hole (5). A linear array is set on the heat exchange tube (2) for partitioning the baffles (7).

2. The injection molding workshop cooling water treatment equipment according to claim 1, characterized in that, The guide plate (3) has guide slots (8) arranged in a linear array to guide airflow.

3. The cooling water treatment equipment for an injection molding workshop according to claim 2, characterized in that, The angle between the guide plate (3) and the side wall of the closed cooling tower body (1) is 30°-45°.

4. The cooling water treatment equipment for an injection molding workshop according to claim 1, characterized in that, The exhaust port (5) is mainly composed of a central circular hole (9) and multiple peripheral circular holes (10), and the multiple peripheral circular holes (10) are arranged equidistantly in a ring around the center of the central circular hole (9).

5. The cooling water treatment equipment for an injection molding workshop according to claim 4, characterized in that, The exhaust port (5) has an inclined groove (11) at its outlet end for guiding cooling water.

6. The cooling water treatment equipment for an injection molding workshop according to claim 1, characterized in that, The cross-sectional projection of the partition (7) is arranged in a wavy shape.

7. The cooling water treatment equipment for an injection molding workshop according to claim 6, characterized in that, The bottom wall of the partition (7) abuts against the upper part of the guide plate (4). The partition (7) is located between two adjacent sets of exhaust holes (5), and an exhaust path is formed between the two adjacent sets of partitions (7).

8. A cooling water treatment device for an injection molding workshop according to claim 6, characterized in that, The partition (7) is made of fiberglass.

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