Foam removing device of automobile expansion kettle
By introducing components such as mounting base, rotating shaft, linkage plate and stirring needle into the car expansion tank, the problems of incomplete bubble elimination and coolant residue in the prior art are solved, achieving efficient defoaming and sufficient coolant replenishment.
Patent Information
- Application Number
- CN202520139299.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-21
AI Technical Summary
The existing compartment design of automotive expansion tanks is not ideal for defoaming, making it difficult to effectively eliminate air bubbles in the coolant, and coolant tends to remain in the upper part of the tank, making it impossible to replenish.
A foam removal device for an automotive expansion tank was designed, which uses components such as a mounting base, a rotating shaft, a linkage plate, and a stirring needle. The linkage plate and the rotating shaft drive the actuating frame to rotate, breaking up the air bubbles. The stirring needle agitates the coolant, and the inverted conical guide surface guides the coolant in, achieving rapid elimination of air bubbles and sufficient inflow of coolant.
It improves foam removal efficiency, prevents coolant from sticking to the inner wall of the tank, ensures sufficient coolant replenishment, has a simple structure, low failure rate, and saves materials.
Smart Images

Figure CN223647908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, and in particular to a foam removal device for an automotive expansion tank. Background Technology
[0002] The expansion tank is a component in the cooling cycle of a car engine. When the engine is running, the coolant circulates continuously in the cooling channels, passing through the expansion tank along the way. If the pressure is too high or there is too much coolant, the excess gas and coolant will flow out from the bypass channel of the expansion tank, thus preventing the cooling system from being under excessive pressure and causing the serious consequence of a burst pipe. The expansion tank is equipped with a defoaming component to reduce air bubbles in the coolant.
[0003] The existing Chinese patent application number 202322773006.X discloses an automotive expansion tank, which includes a cylindrical tank body with a partition inside the tank body. The partition is located in the middle of the tank body and divides the tank body into two parts. A vent is opened in the middle of the partition, and a water inlet and a water outlet are opened at the lower part of the tank body.
[0004] The above-mentioned technology achieves a certain degree of defoaming effect through the setting of the partition. However, in actual use, the defoaming effect of the partition alone is not ideal. Therefore, in order to solve the above technical problems, we propose a foam removal device for a car expansion tank. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a foam removal device for automotive expansion tanks.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A foam removal device for an automotive expansion tank includes a mounting base inside the tank. The lower end of the mounting base has an upwardly protruding conical defoaming surface. A rotating shaft is rotatably provided in the middle of the mounting base. A plurality of air holes are provided in the middle of the mounting base corresponding to the rotating shaft. A toggle bracket is provided at the lower part of the shaft. A plurality of linkage plates are provided at the lower end of the shaft. The outer side of the linkage plates is in contact with the inner wall of the lower end of the tank.
[0008] Preferably, each end of the agitator is provided with a plurality of stirring needles, the upper and lower ends of which extend to the upper and lower sides of the agitator.
[0009] Preferably, the mounting base consists of a main body and a sub-body, with the rotating shaft and air vent located within the main body.
[0010] Preferably, the upper ends of the main body and the sub-body are provided with an inverted conical guide surface, and the sides of the main body and the sub-body that are far apart from each other are connected to the inner wall of the pot.
[0011] Preferably, the main body and the sub-body are provided with a cavity on the side that is far apart from each other, and the cavity and the inner wall of the pot together form a sealed space.
[0012] Preferably, the pores are distributed in a circle with the axis of rotation as the center, and the diameter of the pores is greater than 8 mm.
[0013] Preferably, the linkage plates are distributed around the axis of rotation and the center circumference, and the thickness of the linkage plates is 3 mm.
[0014] The foam removal device for a car expansion tank proposed in this utility model has the following advantages:
[0015] 1. In this utility model, a linkage plate is provided at the bottom of the kettle body. The linkage plate is connected to the mounting base through a rotating shaft. When the coolant rotates inside the kettle body, the coolant pushes the linkage plate to rotate synchronously. That is, the linkage plate drives the rotating shaft to rotate under the push of the coolant. At this time, the rotating shaft drives the actuating frame to rotate, which disperses the air bubbles and thus accelerates the defoaming efficiency to a certain extent. Since one side of the linkage plate is in contact with the inner wall of the kettle body, the linkage plate can clean and scrape the inner wall of the kettle body when it rotates. That is, the linkage plate can clean the inner wall of the expansion kettle body to prevent impurities from sticking to the inner wall of the kettle body. When this solution is used, not only can the defoaming efficiency be improved by rotating the actuating frame, but the interior of the kettle body can also be automatically cleaned by rotating the linkage plate. Therefore, this solution has multiple effects when used. In addition, since no additional power is required, it also has the advantages of simple structure and low failure rate.
[0016] 2: In this utility model, each end of the agitator is provided with several stirring needles. The upper and lower ends of the stirring needles extend to the upper and lower sides of the agitator. The upper ends of the main body and the sub-body are provided with inverted conical guide surfaces. The setting of the stirring needles allows the rotating shaft to drive the stirring needles to rotate when it rotates. The rotating stirring needles stir and puncture the air bubbles in the coolant, thereby improving the foam removal effect to a certain extent. At the same time, the setting of the inverted conical guide surfaces allows the coolant introduced by the personnel to flow more fully into the bottom of the expansion tank when replenishing the coolant, thus avoiding the phenomenon that coolant remains in the upper part of the expansion tank and cannot be replenished. The cavity setting makes it easier to reduce the weight of the mounting base and save materials. The circumferentially distributed air holes make it easier for the air bubbles of the coolant inside the lower end of the tank to be discharged upwards. Attached Figure Description
[0017] Figure 1 This is a schematic diagram showing the fit between the mounting base and the body of the foam removal device for an automotive expansion tank according to this utility model.
[0018] Figure 2 This is a schematic diagram of the foam removal device for an automotive expansion tank proposed in this utility model;
[0019] Figure 3 This is a split schematic diagram of the mounting base for a foam removal device for an automotive expansion tank according to this utility model.
[0020] Figure 4 This is a schematic diagram of a foam removal device for an automotive expansion tank according to the present invention.
[0021] In the diagram: 1. Kettle body; 2. Mounting base; 201. Main body; 202. Sub-body; 3. Rotating shaft; 4. Air hole; 5. Actuating bracket; 6. Linkage plate; 7. Stirring needle; 8. Inverted conical guide surface; 9. Cavity; 10. Positive conical defoaming surface. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example
[0023] Reference Figure 1-4 A foam removal device for an automotive expansion tank includes a mounting base 2 located inside the tank body 1. The lower end of the mounting base 2 has an upwardly protruding conical defoaming surface 10. A rotating shaft 3 is rotatably mounted in the middle of the mounting base 2. A plurality of air holes 4 are provided in the middle of the mounting base 2 corresponding to the rotating shaft 3. A toggle frame 5 is provided at the lower part of the shaft 3. A plurality of linkage plates 6 are provided at the lower end of the shaft 3. The outer side of the linkage plates 6 is in contact with the inner wall of the lower end of the tank body 2. The rotating toggle frame 5 disperses the air bubbles, thereby accelerating the defoaming efficiency to a certain extent. Since one side of the linkage plate 6 is in contact with the inner wall of the tank body 1, the linkage plate 6 can clean and scrape the inner wall of the tank body 1 when it rotates. That is, the linkage plate 6 can clean the inner wall of the expansion tank to prevent impurities from sticking to the inner wall of the tank body 1. Example
[0024] Reference Figure 1-4 While all other parts are the same as in Example 1, the difference between this example and Example 1 is that:
[0025] Each end of the agitator 5 is equipped with several stirring needles 7, with the upper and lower ends of the stirring needles 7 extending to the upper and lower sides of the agitator 5. The mounting base 2 consists of a main body 201 and a sub-body 202. The rotating shaft 3 and the air hole 4 are both located inside the main body 201. The upper ends of the main body 201 and the sub-body 202 are both provided with an inverted conical guide surface 8. The sides of the main body 201 and the sub-body 202 that are far apart from each other are connected to the inner wall of the container 2. The setting of the stirring needles 7 allows the rotating shaft 4 to drive the stirring needles 7 to rotate when it rotates, thereby agitating and piercing the air bubbles in the coolant through the rotating stirring needles 7, thus improving the foam removal effect to a certain extent. At the same time, the setting of the inverted conical guide surface 8... This design allows the coolant to flow more fully into the bottom of the expansion tank during replenishment, preventing coolant residue from remaining on the upper part of the expansion tank and hindering replenishment. A cavity 9 is provided on the side of the main body 201 and the sub-body 202 that is far apart from each other. The cavity 9 and the inner wall of the tank body 2 together form a sealed space. Air holes 4 are distributed circumferentially around the axis of the rotating shaft 3, with a diameter greater than 8mm. Linkage plates 6 are distributed circumferentially around the axis of the rotating shaft 3, with a thickness of 3mm. The cavity 9 design helps reduce the weight of the mounting base 2 and saves materials. The circumferentially distributed air holes 4 facilitate the upward discharge of air bubbles from the coolant inside the lower part of the tank body 1.
[0026] Operating principle and advantages: In use, the reservoir body 1 is based on existing technology. When the coolant in the car flows through the lower end of the reservoir body 1, it rotates along the inner wall of the reservoir body 1, generating centrifugal force. This causes the air bubbles to move upwards and converge towards the middle of the upper part along the conical defoaming surface 10. Finally, they enter the upper part of the reservoir body 1 through the air hole 4, thus achieving defoaming treatment of the coolant air bubbles inside the expansion tank. In the above process, a linkage plate 6 is provided at the bottom of the reservoir body 1, and the linkage plate 6 is connected to the mounting base 2 through the rotating shaft 4. Then, when the coolant rotates inside the container 1, the coolant pushes the linkage plate 6 to rotate synchronously. That is, the linkage plate 6 drives the rotating shaft 4 to rotate under the push of the coolant. At this time, the rotating shaft 4 drives the agitator 5 to rotate, that is, the rotating agitator 5 disperses the air bubbles, thereby accelerating the defoaming efficiency to a certain extent. Moreover, since one side of the linkage plate 6 is in contact with the inner wall of the container 1, the linkage plate 6 can clean and scrape the inner wall of the container 1 when it rotates. That is, the linkage plate 6 can clean the inner wall of the expansion tank to prevent impurities from sticking to the inner wall of the container 1.
[0027] It should be further explained that each end of the agitator 5 is equipped with several stirring needles 7. The upper and lower ends of the stirring needles 7 extend to the upper and lower sides of the agitator 5. The upper ends of the main body 201 and the sub-body 202 are jointly provided with an inverted conical guide surface 8. The setting of the stirring needles 7 allows the rotating shaft 4 to drive the stirring needles 7 to rotate when it rotates. In turn, the rotating stirring needles 7 agitate and puncture the air bubbles in the coolant, thereby improving the foam removal effect to a certain extent. At the same time, the setting of the inverted conical guide surface 8 allows the coolant introduced by the personnel to flow more fully into the bottom of the expansion tank when adding coolant. The expansion tank is designed to prevent coolant residue from remaining in the upper part of the expansion tank and making it impossible to replenish the coolant. A cavity 9 is provided on the side of the main body 201 and the sub-body 202 that are far apart from each other. The cavity 9 and the inner wall of the tank body 2 together form a sealed space. The vents 4 are distributed in a circle with the axis of the rotating shaft 3 as the center. The diameter of the vents 4 is greater than 8 mm. The linkage plate 6 is distributed in a circle with the axis of the rotating shaft 3 as the center. The thickness of the linkage plate 6 is 3 mm. The cavity 9 is designed to reduce the weight of the mounting base 2 and save materials. The circumferentially distributed vents 4 facilitate the upward discharge of air bubbles of coolant inside the lower end of the tank body 1.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A foam removal device for an automotive expander can, comprising a mounting base (2) disposed inside the can body (1), characterized in that, The mounting base (2) has an upwardly protruding conical defoaming surface (10) at its lower end. The mounting base (2) has a rotating shaft (3) in the middle. The mounting base (2) has several air holes (4) corresponding to the rotating shaft (3) in the middle. The lower part of the shaft (3) has a toggle bracket (5). The lower end of the shaft (3) has several linkage plates (6). The outer side of the linkage plates (6) is in contact with the inner wall of the lower end of the pot body (1).
2. The foam removal device for a car expansion tank according to claim 1, characterized in that, Each end of the agitator (5) is provided with a plurality of stirring needles (7), and the upper and lower ends of the stirring needles (7) extend to the upper and lower sides of the agitator (5).
3. The foam removal device for a car expansion tank according to claim 1, characterized in that, The mounting base (2) consists of a main body (201) and a sub-body (202), with the rotating shaft (3) and the air hole (4) located inside the main body (201).
4. The foam removal device for a car expansion tank according to claim 3, characterized in that, The upper ends of the main body (201) and the sub-body (202) are provided with an inverted conical guide surface (8), and the sides of the main body (201) and the sub-body (202) that are far apart from each other are connected to the inner wall of the pot body (1).
5. A foam removal device for an automotive expansion tank according to claim 3, characterized in that, The main body (201) and the sub-body (202) are provided with cavities (9) on the side away from each other, and the cavity (9) and the inner wall of the pot body (1) together form a sealed space.
6. The foam removal device for a car expansion tank according to claim 1, characterized in that, The pores (4) are distributed in a circle with the axis of the rotating shaft (3) as the center, and the diameter of the pores (4) is greater than 8 mm.
7. A foam removal device for an automotive expansion tank according to claim 1, characterized in that, The linkage plate (6) is distributed around the axis of the rotating shaft (3) and the center of the circle, and the thickness of the linkage plate (6) is 3 mm.
Citation Information
Patent Citations
Automobile expansion kettle
CN221096661U