An external constant temperature and constant current water circulating device

The use of a snap-fit ​​assembly and an electric push rod system enables rapid filter replacement and flow control, solving the problems of long filter replacement time and unstable flow, and improving the maintenance efficiency and operational stability of the equipment.

CN224300092UActive Publication Date: 2026-05-29DONGGUAN ZHENGHANG INSTR EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN ZHENGHANG INSTR EQUIP CO LTD
Filing Date
2025-06-10
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The replacement process for the filter screen of the existing external constant temperature and constant flow water circulation equipment is time-consuming and cumbersome, which can easily lead to long downtime and affect the continuity of operation. In addition, the unstable circulation water flow can result in poor cooling or heating effects of the equipment.

Method used

The system employs a snap-fit ​​assembly and an electric push rod system to enable quick filter replacement and flow control. The snap-fit ​​assembly uses a snap-fit ​​ball and a sliding column to facilitate quick filter installation and removal, while the electric push rod drives trapezoidal fan blades to adjust the flow rate.

Benefits of technology

It improved filter replacement efficiency, reduced equipment downtime, stabilized circulating water flow, and enhanced the continuity of equipment operation and stability of working conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to constant temperature constant current water circulation technical field discloses a kind of external hanging constant temperature constant current water circulation equipment, including water tank, the water tank side wall is fixedly connected with hook, the water tank top is fixedly connected with water inlet pipe, the water inlet pipe inside is fixedly connected with connecting frame, the connecting frame inside is slidably connected with sealing frame, the sealing frame inside is provided with filter screen, the connecting frame inside is fixedly connected with hollow column, the hollow column inside is provided with clamping assembly;The clamping assembly includes ball and sliding column, the ball is slidably connected in the hollow column, the sliding column one end is fixedly connected in the ball side wall.The utility model in, by pulling sealing frame makes sealing frame side wall to ball extrusion, to reach the effect of the filter screen of equipment for quick replacement, solve traditional filter screen replacement time-consuming, operation is complicated, prone to equipment downtime long, influence operation continuity problem, improve equipment maintenance efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of constant temperature and constant flow water circulation technology, and in particular to an external constant temperature and constant flow water circulation device. Background Technology

[0002] External constant temperature and flow water circulation equipment is a key device widely used in industrial production and laboratory environments. It is mainly used to provide a stable cooling or heating medium circulation for precision instruments or production equipment. Its core function is to maintain the constant temperature of the target equipment through the circulating water system, ensure the stability of process parameters, and avoid the impact of temperature fluctuations on equipment performance or product quality. With the improvement of industrial automation, higher requirements are placed on the reliability, ease of maintenance, and control accuracy of the circulation system. Traditional equipment mostly adopts a built-in design, which is complex in structure and difficult to maintain. In contrast, the external design simplifies the installation process through modular layout and facilitates independent maintenance, becoming the mainstream direction of current technological development.

[0003] Existing external circulation equipment typically consists of a water pump, heat exchanger, filter unit, and control valve group. Its technical principle relies on the combination of mechanical transmission and fluid dynamics. The filter unit mostly adopts a fixed filter screen structure, which is fixed inside the pipe by bolts or clips. When water flows through, impurities are intercepted by the filter screen.

[0004] The existing filter replacement process has significant drawbacks. Fixed filters require disassembling pipe flanges or fasteners to remove them, which necessitates stopping the machine and emptying the pipeline. This process is not only time-consuming and labor-intensive but also leads to prolonged system downtime. In continuous production scenarios, frequent maintenance directly impacts equipment continuity and increases the risk of unplanned downtime. Furthermore, improper operation during filter removal can easily damage seals, further exacerbating maintenance costs. Therefore, an external constant temperature and constant flow water circulation device is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an external constant temperature and constant flow water circulation device, which aims to improve the problems of long filter replacement time, cumbersome operation, and long downtime of the equipment, which affect the continuity of operation in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an external constant temperature and constant flow water circulation device, comprising a water tank, a hook fixedly connected to the side wall of the water tank, a water inlet pipe fixedly connected to the top of the water tank, a connecting frame fixedly connected inside the water inlet pipe, a sealing frame slidably connected inside the connecting frame, a filter screen disposed inside the sealing frame, a hollow column fixedly connected inside the connecting frame, and a locking component disposed inside the hollow column;

[0007] The locking assembly includes a locking ball and a sliding column. The locking ball is slidably connected inside the hollow column. One end of the sliding column is fixedly connected to the side wall of the locking ball. The sliding column is slidably connected inside the hollow column. A limit plate is fixedly connected to the outer wall of the sliding column. A spring is sleeved on the outer wall of the sliding column. One end of the spring is fixedly connected to the side wall of the locking ball. The other end of the spring is fixedly connected to the inner wall of the hollow column. A fixing ring is fixedly connected to the side wall of the water tank. An adjustment assembly is provided inside the fixing ring.

[0008] As a further description of the above technical solution:

[0009] The regulating component includes trapezoidal fan blades and a central disk. The sidewall of the central disk is disposed inside the fixed ring. The trapezoidal fan blades are rotatably connected inside the fixed ring. A circulation pipe is fixedly connected to one side of the fixed ring, and a water pump is disposed outside the circulation pipe.

[0010] As a further description of the above technical solution:

[0011] An electric push rod is rotatably connected to the side wall of the water tank, and a notch frame is fixedly connected to the output end of the electric push rod.

[0012] As a further description of the above technical solution:

[0013] A push plate is rotatably connected inside the notch frame, and a ring is fixedly connected to the bottom of the push plate.

[0014] As a further description of the above technical solution:

[0015] The circular ring is rotatably connected to the outer wall of the fixed ring, and a pushing column is fixedly connected to the outer wall of the circular ring. The pushing column is arranged in a ring array on the outer wall of the circular ring.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the push column is provided with a hollow handle, and the push column is slidably connected inside the hollow handle. The hollow handle is arranged in a ring array outside the fixed ring.

[0018] As a further description of the above technical solution:

[0019] A rotating column is fixedly connected to the bottom of the hollow handle, and one end of the rotating column is fixedly connected to one side of the trapezoidal fan blade.

[0020] As a further description of the above technical solution:

[0021] The rotating column is rotatably connected inside the fixed ring, and the rotating column is arranged in a ring array inside the fixed ring.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by pulling the sealing frame, the side wall of the sealing frame is squeezed against the locking ball, which in turn causes the locking ball to slide inside the hollow column. At the same time, the spring is compressed, which unlocks the locking state between the locking ball and the sealing frame, thereby achieving the effect of quickly replacing the filter screen of the equipment. This solves the problems of long replacement time, complicated operation, and long downtime of the equipment, which affect the continuity of operation, and improves the equipment maintenance efficiency.

[0024] 2. In this utility model, the output end of the electric push rod drives the notch frame to make the push plate rotate inside the notch frame, thereby pushing the ring to drive the push column to slide inside the hollow handle. Then, through the transmission of the rotating column, the trapezoidal fan blade rotates inside the fixed ring, thereby achieving the effect of controlling the circulating water flow. This solves the problem of unstable circulating water flow leading to poor cooling or heating effect and fluctuation of operating parameters, and improves the stability of equipment operation. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an external constant temperature and constant flow water circulation device proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the connection frame structure of an external constant temperature and constant flow water circulation device proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the fixed ring structure of an external constant temperature and constant flow water circulation device proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the trapezoidal fan blade structure of an external constant temperature and constant flow water circulation device proposed in this utility model.

[0030] Legend:

[0031] 1. Water tank; 2. Hook; 3. Inlet pipe; 4. Connecting frame; 5. Circulation pipe; 6. Sealing frame; 7. Filter screen; 8. Ball clamp; 9. Hollow column; 10. Sliding column; 11. Spring; 12. Limiting plate; 13. Fixing ring; 14. Electric push rod; 15. Water pump; 16. Notch frame; 17. Push plate; 18. Ring; 19. Push column; 20. Hollow handle; 21. Rotating column; 22. Trapezoidal fan blade; 23. Center plate. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1-5 An embodiment of this utility model provides: an external constant temperature and constant flow water circulation device, including a water tank 1, a hook 2 fixedly connected to the side wall of the water tank 1, the hook 2 is used to suspend and fix the device, which is convenient for installation and saves space, an inlet pipe 3 fixedly connected to the top of the water tank 1, the inlet pipe 3 is used to introduce circulating water, a connecting frame 4 fixedly connected inside the inlet pipe 3, the connecting frame 4 is used to fix the filter screen 7 and accommodate the sealing frame 6, the sealing frame 6 is slidably connected inside the connecting frame 4, the sealing frame 6 is used to seal the filter screen 7 and realize quick disassembly and assembly, the filter screen 7 is provided inside the sealing frame 6, the filter screen 7 is used to filter impurities in the circulating water, a hollow column 9 is fixedly connected inside the connecting frame 4, the hollow column 9 is used to accommodate the locking component and limit its range of motion, the locking component is provided inside the hollow column 9;

[0034] The engaging assembly includes a ball 8 and a sliding post 10. The ball 8 is engaged and fixed with the side wall of the sealing frame 6. The ball 8 is slidably connected inside the hollow post 9. The sliding post 10 is used to transmit the displacement of the ball 8 and compress the spring 11. One end of the sliding post 10 is fixedly connected to the side wall of the ball 8. The outer wall of the sliding post 10 is fixedly connected to a limiting plate 12, which is used to limit the sliding range of the sliding post 10. The outer wall of the sliding post 10 is fitted with a spring 11, which is used to provide a restoring force to keep the ball 8 engaged. One end of the spring 11 is fixedly connected to the side wall of the ball 8, and the other end of the spring 11 is fixedly connected to the inner wall of the hollow post 9. A fixing ring 13 is fixedly connected to the side wall of the water tank 1. The fixing ring 13 is used to fix and support the adjustment assembly. The adjustment assembly is provided inside the fixing ring 13.

[0035] Reference Figures 1-5The regulating assembly includes trapezoidal fan blades 22 and a central disk 23. The central disk 23 supports the trapezoidal fan blades 22 and maintains their rotational stability. The sidewall of the central disk 23 is located inside the fixed ring 13. The trapezoidal fan blades 22 are used to regulate the flow rate of circulating water and are rotatably connected inside the fixed ring 13. A circulation pipe 5 is fixedly connected to one side of the fixed ring 13. The circulation pipe 5 is used to transport circulating water and is connected to a water pump 15. A water pump 15 is located outside the circulation pipe 5 and is used to drive the flow of circulating water. An electric push rod 14 is rotatably connected to the sidewall of the water tank 1. The electric push rod 14 is used to provide linear driving force to control the flow rate regulation. A notch frame 16 is fixedly connected to the output end of the electric push rod 14. The notch frame 16 is used to transmit the thrust of the electric push rod 14 and drive the push plate 17 to move. The push plate 17 is rotatably connected inside the notch frame 16 and is used to convert linear motion into rotation of the ring 18. A ring 18 is fixedly connected to the bottom of the push plate 17. The ring 18 is used to drive the push column 19 to make a circular motion. The ring 18 is rotatably connected to the outer wall of the fixed ring 13. The push column 19 is fixedly connected to the outer wall of the ring 18. The push column 19 is used to transmit the rotation of the ring 18 to the hollow handle 20. The push column 19 is arranged in a ring array on the outer wall of the ring 18. The hollow handle 20 is provided on the outer wall of the push column 19. The hollow handle 20 is used to convert the sliding of the push column 19 into the rotational motion of the rotating column 21. The push column 19 is slidably connected to the inside of the hollow handle 20. The hollow handle 20 is arranged in a ring array outside the fixed ring 13. The bottom of the hollow handle 20 is fixedly connected to the rotating column 21. The rotating column 21 is used to drive the trapezoidal fan blade 22 to rotate. One end of the rotating column 21 is fixedly connected to one side of the trapezoidal fan blade 22. The rotating column 21 is rotatably connected to the inside of the fixed ring 13. The rotating column 21 is arranged in a ring array inside the fixed ring 13.

[0036] Working principle: When filter screen 7 needs to be replaced, the operator pulls the sealing frame 6. The side wall of the sealing frame 6 squeezes the retaining ball 8, causing the retaining ball 8 to drive the sliding column 10 to slide inside the hollow column 9. At the same time, the spring 11 is compressed, releasing the retaining ball 8 from the sealing frame 6. The sealing frame 6 can then be pulled out from the connecting frame 4, thus quickly replacing the filter screen 7. After replacement, the sealing frame 6 is pushed back into the connecting frame 4. Under the elastic force of the spring 11, the retaining ball 8 resets and locks into the sealing frame 6, completing the fixation of the filter screen 7. This achieves the purpose of quickly replacing the filter components of the equipment. Regarding the control of circulating water flow, the fixing ring 13 on the side wall of the water tank 1 is equipped with an adjustment component, including a trapezoidal fan blade 22 and a central disc 23. One side of the fixing ring 13 is connected to the circulation pipe 5, and a water pump 15 is installed on the circulation pipe 5. During operation, the electric push rod 14 is rotatably connected to the side wall of the water tank 1. Its output end drives the notch frame 16 to move, and the push plate 17 rotates within the notch frame 16. This pushes the ring 18, causing the push column 19 to slide within the hollow handle 20. The hollow handle 20 is connected to the trapezoidal fan blade 22 via the rotating column 21. The sliding of the push column 19 is transmitted through the rotating column 21, causing the trapezoidal fan blade 22 to rotate within the fixed ring 13. The rotation of the trapezoidal fan blade 22 changes its contact angle and area with the water flow, thereby adjusting the circulating water flow rate. When the flow rate needs to be increased, the electric push rod 14 extends, causing the trapezoidal fan blade 22 to rotate to a suitable angle, reducing water flow resistance. When the flow rate needs to be reduced, the electric push rod 14 shortens, increasing the obstruction of the water flow by the trapezoidal fan blade 22, thus achieving the purpose of controlling the circulating water flow rate.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An external constant temperature and constant flow water circulation device, comprising a water tank (1), characterized in that: The water tank (1) is fixedly connected to a hook (2) on its side wall, and a water inlet pipe (3) is fixedly connected to the top of the water tank (1). A connecting frame (4) is fixedly connected inside the water inlet pipe (3). A sealing frame (6) is slidably connected inside the connecting frame (4). A filter screen (7) is provided inside the sealing frame (6). A hollow column (9) is fixedly connected inside the connecting frame (4). A locking component is provided inside the hollow column (9). The locking assembly includes a locking ball (8) and a sliding column (10). The locking ball (8) is slidably connected inside the hollow column (9). One end of the sliding column (10) is fixedly connected to the side wall of the locking ball (8). The sliding column (10) is slidably connected inside the hollow column (9). A limit plate (12) is fixedly connected to the outer wall of the sliding column (10). A spring (11) is sleeved on the outer wall of the sliding column (10). One end of the spring (11) is fixedly connected to the side wall of the locking ball (8). The other end of the spring (11) is fixedly connected to the inner wall of the hollow column (9). A fixing ring (13) is fixedly connected to the side wall of the water tank (1). An adjustment component is provided inside the fixing ring (13).

2. The external constant temperature and constant flow water circulation device according to claim 1, characterized in that: The adjustment assembly includes a trapezoidal fan blade (22) and a central disk (23). The sidewall of the central disk (23) is disposed inside the fixed ring (13). The trapezoidal fan blade (22) is rotatably connected inside the fixed ring (13). A circulation pipe (5) is fixedly connected to one side of the fixed ring (13). A water pump (15) is disposed outside the circulation pipe (5).

3. The external constant temperature and constant flow water circulation device according to claim 2, characterized in that: The water tank (1) is rotatably connected to an electric push rod (14) on its side wall, and the output end of the electric push rod (14) is fixedly connected to a notch frame (16).

4. An external constant temperature and constant flow water circulation device according to claim 3, characterized in that: The notch frame (16) is rotatably connected to a push plate (17), and a ring (18) is fixedly connected to the bottom of the push plate (17).

5. An external constant temperature and constant flow water circulation device according to claim 4, characterized in that: The ring (18) is rotatably connected to the outer wall of the fixed ring (13), and a push column (19) is fixedly connected to the outer wall of the ring (18). The push column (19) is arranged in a ring array on the outer wall of the ring (18).

6. An external constant temperature and constant flow water circulation device according to claim 5, characterized in that: The outer wall of the push column (19) is provided with a hollow handle (20), the push column (19) is slidably connected inside the hollow handle (20), and the hollow handle (20) is arranged in a ring array outside the fixed ring (13).

7. An external constant temperature and constant flow water circulation device according to claim 6, characterized in that: The hollow handle (20) is fixedly connected to a rotating column (21) at the bottom, and one end of the rotating column (21) is fixedly connected to one side of the trapezoidal fan blade (22).

8. An external constant temperature and constant flow water circulation device according to claim 7, characterized in that: The rotating column (21) is rotatably connected inside the fixed ring (13), and the rotating column (21) is arranged in a ring array inside the fixed ring (13).