Automatic dosing device for cleaning plate heat exchanger
By designing the stirring system and filtering structure of the automatic dosing device, the problem of cumbersome reagent mixing during the plate heat exchanger cleaning process is solved, uniform reagent mixing and impurity filtering are achieved, the cleaning efficiency is improved and blockage is prevented.
Patent Information
- Application Number
- CN202422759513.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-12
AI Technical Summary
During the cleaning process of existing plate heat exchangers, the mixing and preparation of pickling agents is cumbersome, which reduces the cleaning efficiency.
An automatic dosing device was designed, which includes a stirring system driven by a reduction motor and a filtering device to achieve rapid and uniform mixing of the reagents and filtering of impurities. The device ensures uniform mixing of the reagents and prevents impurities from entering the heat exchanger through a stirring shaft, bevel gear transmission and filter cartridge structure.
It improves the mixing efficiency of the reagents, prevents the heat exchanger from being blocked, simplifies the operation process, and improves the cleaning efficiency.
Smart Images
Figure CN223361217U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dosing devices, in particular to an automatic dosing device for cleaning a plate heat exchanger. Background Art
[0002] The plate heat exchanger is composed of a series of stamped concave and convex stainless steel plates (or other suitable materials such as titanium alloy). These plates are sealed by vacuum welding or sealing gaskets to form a staggered flow structure. It has the advantages of compact structure, large effective cooling area, corrosion resistance, and high heat exchange efficiency. In addition, the plate heat exchanger has the characteristics of being able to quickly meet the requirements of different occasions and capacity expansion by simply changing the number of plates according to different heat exchange rates. The system operation mode is relatively flexible and is widely and commonly used in water-water, water-oil and other heat exchange systems in modern large-scale coal-fired power plants.
[0003] After a period of use, current plate heat exchangers need to be cleaned with pickling agents to remove scale due to scale. In order to facilitate cleaning, the pickling agents are usually stored in an automatic dosing device and can be directly added to the water flow for cleaning when in use. Before the pickling agents are used, various chemical agents need to be fully mixed, which makes the preparation of the agents more cumbersome and reduces the cleaning efficiency. Utility Model Content
[0004] The purpose of the utility model is to provide an automatic dosing device for cleaning a plate heat exchanger, so as to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic dosing device for cleaning a plate heat exchanger, comprising a butt joint, a connecting pipe fixedly connected to the outer surface of the butt joint, a storage tank fixedly connected to the top of the connecting pipe, a rotating sleeve rotatably connected to the inside of the storage tank, a stirring shaft rotatably connected to the inside of the rotating sleeve, a protective cover fixedly connected to the top of the storage tank and located at the center, a reduction motor fixedly connected to the top of the protective cover, an output end of the reduction motor transmission connection with the top of the stirring shaft, a No. 1 bevel gear fixedly connected to the outer surface of the No. 1 bevel gear, a No. 2 bevel gear engaged with the outer surface of the No. 1 bevel gear, one end of the two No. 2 bevel gears are rotatably connected to the inner surface of the protective cover, a No. 3 bevel gear is engaged with the outer surface of the two No. 2 bevel gears, the inner surface of the No. 3 bevel gear is fixedly connected to the outer surface of the rotating sleeve, and the outer surface of the rotating sleeve is fixedly connected to the stirring frame.
[0006] As a further preferred embodiment of the present technical solution, the outer surface of the docking tube is fixedly connected to a limiting cylinder, a filter cylinder is inserted into the inside of the limiting cylinder, a sealing cover is threadedly connected to the bottom end of the limiting cylinder, a drain pipe is fixedly connected to the bottom end of the filter cylinder, the bottom end of the drain pipe is inserted through the inner bottom surface of the sealing cover, and a sealing screw cover is threadedly connected to the bottom end of the sealing cover.
[0007] As a further preferred embodiment of the present technical solution, two positioning grooves are provided on the inner surface of the limiting cylinder, and two positioning rods are fixedly connected to the outer surface of the filter cylinder, and the outer surfaces of the two positioning rods are slidably connected to the inner surfaces of the two positioning grooves respectively.
[0008] As a further preferred embodiment of the present technical solution, an elastic support pad is fixedly connected to the inner bottom surface of the sealing cover, and the top end of the elastic support pad is in conflict with the bottom end of the filter cartridge.
[0009] As a further preferred embodiment of the present technical solution, the top of the storage tank is fixedly connected to an air pump, and the top of the storage tank is fixedly connected to a feeding pipe.
[0010] As a further preferred embodiment of the present technical solution, a partition seat is fixedly connected to the inner surface of the connecting tube, a baffle is rotatably connected to the bottom end of the partition seat, a fixing rod is fixedly connected to the inner surface of the connecting tube, a return spring is rotatably connected to the bottom end of the fixing rod, and the other end of the return spring is rotatably connected to the top end of the baffle.
[0011] As a further preferred embodiment of the present technical solution, the bottom end of the stirring frame is fixedly connected to a stabilizing frame, and the bottom end of the stirring shaft is rotatably connected to the inside of the stabilizing frame.
[0012] The utility model provides an automatic dosing device for cleaning a plate heat exchanger, which has the following beneficial effects:
[0013] (1) The utility model drives the stirring shaft to rotate through the reduction motor, and the rotation of the stirring shaft drives the No. 1 bevel gear to rotate. During the rotation of the No. 1 bevel gear, the No. 2 bevel gear drives the rotating sleeve fixedly connected to the No. 3 bevel gear to rotate in the opposite direction, so that the stirring shaft and the stirring frame stir the medicine in the storage tank in two directions, quickly and evenly mix it, and can prevent the medicine from precipitating during storage, thereby improving the cleaning efficiency of the plate heat exchanger.
[0014] (2) When the water flows into the interior of the docking tube and passes through the filter cartridge, the impurities in the water are blocked by the filter cartridge. The blocked impurities fall to the bottom of the filter cartridge under the action of gravity during the subsequent accumulation process for collection. When a certain amount of impurities are collected in the filter cartridge, the staff opens the sealing screw cap, and the water flows out along the sewage pipe and directly takes out the impurities inside the filter cartridge, thereby filtering and cleaning the impurities in the water, reducing the probability of blockage of the plate heat exchanger, and having a simple structure and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of the storage tank of the present invention;
[0017] Figure 3 This is an exploded schematic diagram of the internal structure of the butt joint pipe and the limiting cylinder of the present invention;
[0018] Figure 4 It is an exploded schematic diagram of the structure between the partition seat and the baffle of the utility model.
[0019] In the figure: 1. Butt joint; 2. Connecting pipe; 3. Storage tank; 4. Stirring shaft; 5. Rotating sleeve; 6. Stirring frame; 7. Protective cover; 8. Reducer motor; 9. Bevel gear No. 1; 10. Bevel gear No. 2; 11. Bevel gear No. 3; 12. Air pump; 13. Limit cylinder; 14. Filter cylinder; 15. Sealing cover; 16. Elastic support pad; 17. Drain pipe; 18. Sealing screw cover; 19. Partition seat; 20. Baffle; 21. Return spring; 22. Fixing rod; 23. Positioning rod; 24. Positioning groove; 25. Feeding pipe; 26. Stabilizing frame. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0021] The utility model provides a technical solution: Figure 1-2 As shown, in this embodiment, an automatic dosing device for cleaning a plate heat exchanger includes a butt joint 1, the outer surface of the butt joint 1 is fixedly connected to a connecting pipe 2, the top of the connecting pipe 2 is fixedly connected to a storage tank 3, the storage tank 3 is internally connected to a rotating sleeve 5, the rotating sleeve 5 is internally connected to a stirring shaft 4, the top of the storage tank 3 and the center are fixedly connected to a protective cover 7, the top of the protective cover 7 is fixedly connected to a reduction motor 8, the output end of the reduction motor 8 is transmission-connected to the top of the stirring shaft 4, and the outer surface of the stirring shaft 4 is fixedly connected to a number one bevel gear 9 The outer surface of the No. 1 bevel gear 9 is meshed with the No. 2 bevel gear 10, and one end of the two No. 2 bevel gears 10 is rotatably connected to the inner surface of the protective cover 7. The outer surfaces of the two No. 2 bevel gears 10 are meshed with the No. 3 bevel gear 11, and the inner surface of the No. 3 bevel gear 11 is fixedly connected to the outer surface of the rotating sleeve 5, and the outer surface of the rotating sleeve 5 is fixedly connected to the stirring frame 6. Among them, by arranging the No. 1 bevel gear 9, the No. 2 bevel gear 10 and the No. 3 bevel gear 11, the stirring shaft 4 and the stirring frame 6 can be stirred in both directions, thereby increasing the stirring force of the medicine and making it mixed more fully.
[0022] like Figure 1 and Figure 3 As shown, the outer surface of the docking tube 1 is fixedly connected to the limiting cylinder 13, and a filter cylinder 14 is inserted into the limiting cylinder 13. The bottom end of the limiting cylinder 13 is threadedly connected to a sealing cover 15, and the bottom end of the filter cylinder 14 is fixedly connected to a drain pipe 17. The bottom end of the drain pipe 17 is inserted through the bottom surface of the sealing cover 15, and the bottom end of the sealing cover 15 is threadedly connected to a sealing screw cover 18. By setting the filter cylinder 14, the water flowing through can be filtered to prevent impurities from entering the plate heat exchanger and causing blockage. By setting the drain pipe 17, the impurities in the filter cylinder 14 can be directly discharged through the water flow, which is convenient for cleaning.
[0023] like Figure 3 As shown, two positioning grooves 24 are provided on the inner surface of the limiting cylinder 13, and two positioning rods 23 are fixedly connected to the outer surface of the filter cylinder 14. The outer surfaces of the two positioning rods 23 are respectively slidably connected to the inner surfaces of the two positioning grooves 24, which can position the filter cylinder 14 and improve stability.
[0024] like Figure 3 As shown, an elastic support pad 16 is fixedly connected to the inner bottom surface of the sealing cover 15 , and the top end of the elastic support pad 16 contacts the bottom end of the filter cartridge 14 , thereby supporting and fixing the filter cartridge 14 .
[0025] like Figure 1 and Figure 2 As shown, the top of the storage tank 3 is fixedly connected to an air pump 12, and the top of the storage tank 3 is fixedly connected to a feeding pipe 25. By setting the air pump 12, the storage tank 3 can be inflated, so that the medicine liquid can enter the docking pipe 1, realizing the automatic dosing effect.
[0026] like Figure 2 and Figure 4 As shown, a partition seat 19 is fixedly connected to the inner surface of the connecting pipe 2, and a baffle 20 is rotatably connected to the bottom end of the partition seat 19. A fixing rod 22 is fixedly connected to the inner surface of the connecting pipe 2, and a return spring 21 is rotatably connected to the bottom end of the fixing rod 22. The other end of the return spring 21 is rotatably connected to the top end of the baffle 20. By setting the baffle 20, the connecting pipe 2 can be sealed to prevent water from entering the interior of the storage tank 3. By setting the return spring 21, the baffle 20 can be reset, and the liquid can only flow out of the storage tank 3 in one direction.
[0027] like Figure 3 As shown, the bottom end of the stirring frame 6 is fixedly connected to the stabilizing frame 26 , and the bottom end of the stirring shaft 4 is rotatably connected to the inside of the stabilizing frame 26 , which can improve the stability of the stirring frame 6 structure.
[0028] The utility model provides an automatic dosing device for cleaning a plate heat exchanger. The specific working principle is as follows:
[0029] The staff directly puts various cleaning agents into the storage tank 3, starts the reduction motor 8, and the reduction motor 8 drives the stirring shaft 4 to rotate. The rotation of the stirring shaft 4 drives the No. 1 bevel gear 9 to rotate. During the rotation of the No. 1 bevel gear 9, the No. 2 bevel gear 10 drives the rotating sleeve 5 fixedly connected to the No. 3 bevel gear 11 to rotate in the opposite direction, so that the stirring shaft 4 and the stirring frame 6 perform two-way stirring on the agents in the storage tank 3 to fully mix the agents. When adding medicine, the air pump 12 pumps the external air 12 into the storage tank 3. Under the action of air pressure, the liquid medicine applies thrust to the baffle 20, and the reset spring The spring 21 is elastically deformed by the force, and after the baffle 20 is opened, the medicine liquid follows the water flow into the plate heat exchanger for cleaning. After the medicine delivery is completed, the reset spring 21 restores the elastic deformation to reset the baffle 20 for sealing. When the water flows through the filter cartridge 14 inside the docking pipe 1, the impurities in the water are blocked by the filter cartridge 14. The blocked impurities fall to the bottom of the filter cartridge 14 under the action of gravity during the subsequent accumulation process for collection. When a certain amount of impurities are collected in the filter cartridge 14, the staff opens the sealing screw cover 18, and the water flows out along the drain pipe 17 and directly takes out the impurities inside the filter cartridge 14.
[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An automatic dosing device for cleaning a plate heat exchanger, comprising a butt-joint pipe (1), characterized in that: The outer surface of the butt joint (1) is fixedly connected to a connecting pipe (2), the top of the connecting pipe (2) is fixedly connected to a storage tank (3), the interior of the storage tank (3) is rotatably connected to a rotating sleeve (5), the interior of the rotating sleeve (5) is rotatably connected to a stirring shaft (4), the top of the storage tank (3) is fixedly connected to a protective cover (7) at a central position, the top of the protective cover (7) is fixedly connected to a reduction motor (8), the output end of the reduction motor (8) is transmission-connected to the top of the stirring shaft (4) The outer surface of the stirring shaft (4) is fixedly connected to a first bevel gear (9), the outer surface of the first bevel gear (9) is meshed with a second bevel gear (10), one end of the two second bevel gears (10) is rotatably connected to the inner surface of the protective cover (7), the outer surfaces of the two second bevel gears (10) are meshed with a third bevel gear (11), the inner surface of the third bevel gear (11) is fixedly connected to the outer surface of the rotating sleeve (5), and the outer surface of the rotating sleeve (5) is fixedly connected to the stirring frame (6).
2. The automatic dosing device for cleaning a plate heat exchanger according to claim 1, characterized in that: The outer surface of the butt joint tube (1) is fixedly connected to a limiting cylinder (13), a filter cylinder (14) is inserted into the interior of the limiting cylinder (13), the bottom end of the limiting cylinder (13) is threadedly connected to a sealing cover (15), the bottom end of the filter cylinder (14) is fixedly connected to a sewage pipe (17), the bottom end of the sewage pipe (17) is inserted through the inner bottom surface of the sealing cover (15), and the bottom end of the sealing cover (15) is threadedly connected to a sealing screw cover (18).
3. The automatic dosing device for cleaning a plate heat exchanger according to claim 2, characterized in that: The inner surface of the limiting cylinder (13) is provided with two positioning grooves (24), the outer surface of the filter cylinder (14) is fixedly connected with two positioning rods (23), and the outer surfaces of the two positioning rods (23) are respectively slidably connected with the inner surfaces of the two positioning grooves (24).
4. The automatic dosing device for cleaning a plate heat exchanger according to claim 3, characterized in that: An elastic support pad (16) is fixedly connected to the inner bottom surface of the sealing cover (15), and the top end of the elastic support pad (16) is in contact with the bottom end of the filter cartridge (14).
5. The automatic dosing device for cleaning a plate heat exchanger according to claim 4, characterized in that: The top end of the storage tank (3) is fixedly connected to an air pump (12), and the top end of the storage tank (3) is fixedly connected to a feeding pipe (25).
6. The automatic dosing device for cleaning a plate heat exchanger according to claim 1, characterized in that: The inner surface of the connecting pipe (2) is fixedly connected to a partition seat (19), the bottom end of the partition seat (19) is rotatably connected to a baffle (20), the inner surface of the connecting pipe (2) is fixedly connected to a fixing rod (22), the bottom end of the fixing rod (22) is rotatably connected to a return spring (21), and the other end of the return spring (21) is rotatably connected to the top end of the baffle (20).
7. The automatic dosing device for cleaning a plate heat exchanger according to claim 6, characterized in that: The bottom end of the stirring frame (6) is fixedly connected to a stabilizing frame (26), and the bottom end of the stirring shaft (4) is rotatably connected to the inside of the stabilizing frame (26).