Self-adaptive variable blade for cooling liquid circulating pump and preparation method of self-adaptive variable blade

Abstract

The invention relates to a self-adaptive variable blade for a cooling liquid circulating pump and a preparation method of the self-adaptive variable blade for the cooling liquid circulating pump, the self-adaptive variable blade for the cooling liquid circulating pump comprises a hard mounting part and a composite blade part, and the hard mounting part is used for mounting the composite blade part; the composite blade part comprises a self-adaption part, a hard reinforcing part and a silica gel coating part, the self-adaption part and the hard reinforcing part are arranged in a stacked mode and coated with the silica gel coating part, and the self-adaption part and the hard reinforcing part are located at the concave face end or the convex face end of the composite blade part in the thickness direction; the silica gel coating piece is connected with the hard mounting part; and the self-adaptive part can change the angle of the composite blade part when being stimulated by external temperature. The cooling liquid circulating pump for the automobile engine has the effects that the cooling liquid circulating pump for the automobile engine has temperature self-adaptability, and the cooling efficiency of the cooling liquid circulating pump is improved.

Description

Technical Field

[0001] The present application relates to the field of cooling pumps, and in particular to an adaptive variable blade for a coolant circulation pump and a preparation method thereof. Background Art

[0002] The automobile engine drives the water pump main shaft and flywheel to rotate through the pulley, and the coolant in the circulating pump is driven by the flywheel to rotate together. Under the action of centrifugal force, it is thrown to the edge of the circulating pump housing, and a certain pressure is generated at the same time, and then it flows out from the outlet or water pipe. The pressure at the center of the flywheel is reduced due to the coolant being thrown out. The coolant in the water tank is sucked into the impeller through the water pipe under the pressure difference between the circulating pump inlet and the impeller center, realizing the reciprocating circulation of the coolant.

[0003] The commonly used coolant for automobile engines is ethylene glycol, whose viscosity changes with temperature. When the coolant temperature is low, the viscosity of ethylene glycol is high. Under the same working pressure, the liquid flow rate is slow, resulting in low cooling efficiency at low temperatures. When the coolant temperature increases during the working process, the viscosity gradually decreases. Under the same working pressure, the liquid flow rate increases and the cooling efficiency gradually improves. However, the flywheel structure of the traditional circulating cooling pump is fixed and is designed according to the optimal working temperature of the coolant. As a result, the vehicle cooling efficiency is only the highest when the coolant reaches the working temperature (65°C), without considering the cooling efficiency under other temperature environments. But in actual situations, it is often difficult for vehicles to reach the ideal temperature, and the temperature changes are more complicated, so a circulating cooling pump that can adapt to the ambient temperature is needed.

[0004] A centrifugal pump with an adaptive pump stage is disclosed in the related art, including an adaptive impeller, an adaptive diffuser, or both; the adaptability can be achieved by an adaptive material, the adaptive material can modify the geometric dimensions in response to external stimuli to modify the fluid flow through the centrifugal pump, the external stimulus includes at least one of stress, temperature, humidity, pH, electric field or magnetic field, and the adaptive material includes at least one of piezoelectric material, magnetostrictive material, shape memory alloy, shape memory polymer, pH sensitive polymer, thermosensitive polymer, magnetorheological fluid, electroactive polymer, thermoelectric material and other adaptive materials. The adaptability allows the pump curve of the pump to be adjusted to better adapt to changing process conditions and better respond to changes in fluid density, the process conditions including optimal power efficiency for a wide operating range.

[0005] With respect to the above-mentioned related technologies, the inventors believe that the impellers in the related technologies have poor actual performance when applied to automobile engine circulation pumps. In actual applications, it is difficult to achieve the application effect of adaptively adapting to ambient temperature to adjust the coolant flow rate. Summary of the invention

[0006] In order to improve the cooling efficiency of a coolant circulation pump for an automobile engine, the present application provides an adaptive variable blade for a coolant circulation pump and a preparation method thereof.

[0007] In a first aspect, the present application provides an adaptive variable blade for a coolant circulation pump, which adopts the following technical solution:

[0008] An adaptive variable blade for a coolant circulation pump comprises a hard mounting portion and a composite blade portion, wherein the hard mounting portion is used to mount the composite blade portion; the composite blade portion comprises an adaptive member, a hard reinforcement member and a silicone coating member, wherein the adaptive member and the hard reinforcement member are stacked and coated inside the silicone coating member; the silicone coating member is connected to the hard mounting portion; the adaptive member can increase or decrease the bending angle of the composite blade portion under the stimulation of external temperature;

[0009] The length of the adaptive member is 1 / 4-3 / 4 of the length of the composite blade portion; the aspect ratio of the adaptive member is 4:1-1:1; in the length direction of the composite blade portion, the spacing between the rigid mounting portions of the adaptive member is not less than 1 / 4 of the length of the composite blade portion.

[0010] Preferably, under external temperature stimulation, the composite blade portion can be located in the first state, or the second state, or any position between the first state and the second state.

[0011] Preferably, in the second state, the composite blade portion is in an optimal state at an optimal working temperature of the coolant; and the angle between the first state and the second state is not less than 20°.

[0012] By adopting the above technical scheme, the hard reinforcement component provides strength support for the composite blade portion, ensuring the stability of the mechanical properties and application state of the blade; under the stimulation of external temperature, the adaptive component generates a bending moment, driving the bending angle of the composite blade portion to increase or decrease, so that the composite blade portion is located in the first state, the second state or any position between the first state and the second state, so as to adjust the coolant flow rate of the coolant circulation pump, and ensure that the coolant circulation pump has a higher cooling efficiency under different external temperatures.

[0013] In the prior art, the main material of the impeller blade is mostly steel, and the end of the impeller blade close to the central axis can be deflected at a limited angle, so the adaptive part is often located at the end of the impeller blade away from the central axis to increase or decrease the outer edge angle of the impeller blade. In the present invention, a silicone coating is used to coat the adaptive part and the hard reinforcement, and the composite blade part is connected to the hard mounting part through the silicone coating. The silicone material has both hardness and toughness, and the inner edge end of the composite blade part close to the hard mounting part has a certain deflection angle. Therefore, under the condition that the adaptive part can generate a large effective bending moment when stimulated by external temperature, the distance between the adaptive part and the hard mounting part can be as short as 1 / 4 of the length of the composite blade, and the adaptive part can be as long as 3 / 4 of the length of the composite blade. In addition, the mechanical transmission performance of the silicone material is good and the toughness is high, and the adaptive part can be as short as 1 / 4 of the length of the composite blade. At the same time, in order to ensure that sufficient bending moment can be generated to drive the increase or decrease of the bending angle of the composite blade part, the aspect ratio of the adaptive part is 1:1-4:1.

[0014] Preferably, the adaptive component and the hard reinforcement component are respectively located at the concave end or the convex end in the thickness direction of the composite blade portion.

[0015] By adopting the above technical solution, the adaptive member is eccentrically placed near the concave end or the convex end in the thickness direction, so that the adaptive member can generate a larger bending moment when stimulated by external temperature and more effectively change the bending angle of the composite blade portion.

[0016] Preferably, the adaptive component is a shape memory sheet made of NiTi memory alloy; the adaptive component is located at the concave end of the composite blade portion in the thickness direction, and the hard reinforcement component is located at the convex end of the composite blade portion in the thickness direction.

[0017] By adopting the above technical scheme, the shape memory sheet made of NiTi memory alloy is soft in the cooling state, the single composite blade part is in the first state under the support of the hard reinforcement, the angle between the two adjacent composite blade parts in the coolant circulation pump is large, the flow rate of the coolant through the circulation pump is large, so that the coolant circulation pump in the cooling state has a higher cooling efficiency; as the temperature rises to the phase transition temperature of the NiTi memory alloy, the shape memory sheet contracts and deforms, the bending angle of the single composite blade part increases and is adjusted to the second state, and the angle between the two adjacent composite blade parts in the coolant circulation pump decreases, so as to ensure that the circulation pump has the best cooling efficiency under the optimal working temperature state;

[0018] The shape memory sheet is placed at the concave end of the composite blade portion in the thickness direction, so that the bending moment generated by the memory alloy sheet when the temperature rises can more effectively drive the increase of the bending angle of the composite blade portion; the hard reinforcement is placed at the convex end of the composite blade portion in the thickness direction, and the rebound force generated by the hard reinforcement portion after cooling can more effectively drive the composite blade portion to recover to a state with a smaller bending angle.

[0019] Preferably, the phase change temperature of the shape memory sheet is: Af<60℃, Mf>30℃.

[0020] By adopting the above technical solution, the optimal working temperature of the coolant ethylene glycol, i.e. 65°C, can be met.

[0021] Preferably, the thickness of the composite blade is 2-3 mm, the thickness of the adaptive member is 0.5-1.5 mm, and the thickness of the hard reinforcement member is 0.3-1 mm.

[0022] Preferably, the thickness of the adaptive part can be selected according to the working pressure of the coolant circulation pump, and the working pressure of the coolant circulation pump and the thickness of the adaptive part can be selected from one of the following combinations: the maximum working pressure of the coolant circulation pump is 0.8Mpa, and the thickness of the adaptive part is 0.5mm; or, the maximum working pressure of the coolant circulation pump is 1.2Mpa, and the thickness of the adaptive part is 0.8mm; or, the maximum working pressure of the coolant circulation pump is 1.8Mpa, and the thickness of the adaptive part is 1-1.5mm.

[0023] By adopting the above technical solution, it is ensured that the coolant circulation pump has better cooling efficiency and application stability.

[0024] Preferably, the rigid reinforcement is a plurality of evenly distributed long fiber glass fibers.

[0025] Preferably, the rigid reinforcement is a glass fiber mesh.

[0026] By adopting the above technical solution, the hard reinforcement is made of glass fiber, which has excellent mechanical strength and elastic properties, a lighter weight under the same mechanical performance conditions, and good compatibility between glass fiber and silicone, which is conducive to making the composite blade part have better application stability.

[0027] Preferably, the silica gel coating is made of PDMS.

[0028] By adopting the above technical solution, the PDMS material has excellent mechanical properties, good hardness, high toughness, heat resistance, cold resistance, and good chemical stability. The use of PDMA material helps to ensure that the composite blade part has good application stability and service life.

[0029] In a second aspect, the present application provides a method for preparing an adaptive variable blade for a coolant circulation pump, using the following technical solution:

[0030] A method for preparing an adaptive variable blade for a coolant circulation pump comprises the following steps:

[0031] The adaptive part is placed in mold 1, and silicone is injected to obtain the adaptive layer after molding;

[0032] The hard reinforcement member is placed in the second mold, and silicone is injected to obtain a reinforcement layer after molding;

[0033] The adaptive layer and the reinforcing layer are stacked and placed in the mold three, and silicone is injected to obtain the composite blade part after molding;

[0034] The composite blade part is connected to the hard mounting part by nested injection molding to obtain an adaptive variable blade.

[0035] By adopting the above technical solution, the adaptive parts and hard reinforcement parts are preliminarily coated with silicone and then cast into shape, which helps to reduce the position errors of the adaptive parts and hard reinforcement parts and ensure the stability of the blade performance.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. The hard reinforcement provides strength support for the composite blade part to ensure the stability of the mechanical properties and application state of the blade; under the stimulation of external temperature, the adaptive part generates bending moment, driving the bending angle of the composite blade part to increase or decrease, so that the composite blade part is located in the first state, the second state or any position between the first state and the second state, so as to adjust the coolant flow of the coolant circulation pump and ensure that the coolant circulation pump has a high cooling efficiency under different external temperatures;

[0038] 2. The shape memory sheet made of NiTi memory alloy is soft in the cooling state, and the composite blade part is in the first state under the action of the hard reinforcement. The angle between the two adjacent composite blade parts in the coolant circulating pump is large, and the flow rate of coolant through the circulating pump is large, so that the coolant circulating pump in the cooling state has a higher cooling efficiency; as the temperature rises to the phase transition temperature of the NiTi memory alloy, the shape memory sheet shrinks and deforms and turns into a hard state, and the bending angle of a single composite blade part increases and is adjusted to the second state to ensure that the circulating pump has the best cooling efficiency under the optimal working temperature state. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic structural diagram of an impeller of a coolant circulation pump in Example 1;

[0040] Figure 2is a cross-sectional schematic diagram of the adaptive variable blade for the coolant circulation pump in Example 1;

[0041] Figure 3 is a schematic diagram of the exploded structure of the adaptive variable blades for the coolant circulation pump in Example 1;

[0042] Figure 4 is a schematic diagram of the exploded structure of the adaptive variable blades for the coolant circulation pump in Example 2;

[0043] Figure 5 is a schematic diagram of the exploded structure of the adaptive variable blades for the coolant circulation pump in Example 3;

[0044] Figure 6 It is a schematic diagram of the exploded structure of the adaptive variable blades for the coolant circulation pump in Example 4.

[0045] Description of reference numerals:

[0046] 1. Adaptive variable blades; 11. Hard mounting portion; 12. Composite blade portion; 121. Silicone coating; 122. Adaptive member; 1221. Shape memory sheet; 123. Hard reinforcement member; 2. Flywheel; 3. Connecting shaft; 4. First state; 5. Second state. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-6 This application is described in further detail.

[0048] Example 1

[0049] This embodiment discloses an adaptive variable vane for a coolant circulation pump.

[0050] Reference Figure 1 and Figure 2 The automobile engine coolant circulation pump includes an impeller, which includes a set of adaptive variable blades 1 for the coolant circulation pump, a flywheel 2 and a connecting shaft 3. The multiple adaptive variable blades 1 are axially symmetrically distributed and evenly installed on the connecting shaft 3. The adaptive variable blade 1 includes a hard mounting portion 11 and a composite blade portion 12. The hard mounting portion 11 is fixed to the connecting shaft 3 by nested injection molding, and the composite blade portion 12 is fixed to the hard mounting portion 11 by nested injection molding.

[0051] Reference Figure 1 and Figure 2, the adaptive variable blade 1 rotates around the axis of the connecting shaft 3, the coolant ethylene glycol enters the impeller under the action of negative pressure and flows out under the action of centrifugal force. The composite blade portion 12 has a first state 4 and a second state 5. In the second state 5, the blade spacing of adjacent adaptive variable blades 1 in the impeller is the optimal spacing at the optimal working temperature of the coolant (i.e. 65°C), and the angle between the first state 4 and the second state 5 is not less than 20°.

[0052] Reference Figure 1 and Figure 2 , the composite blade portion 12 can be adjusted from the first state 4 to any position between the first state 4 and the second state 5. When the coolant temperature is low, the composite blade portion 12 is in the first state 4, the coolant flow rate is low, and the impeller fluid flux is large; as the impeller runs, the coolant temperature increases to reach the phase change temperature T, the composite blade portion 12 moves to the second state 5, the impeller fluid flux decreases, and the viscosity of the coolant decreases, and the flow rate increases.

[0053] Reference Figure 2 and Figure 3 The composite blade portion 12 includes a silicone coating 121, and an adaptive member 122 and a hard reinforcement member 123 coated inside the silicone coating 121. The adaptive member 122 and the hard reinforcement member 123 are stacked and respectively located at the concave end or the convex end of the composite blade portion 12 in the thickness direction.

[0054] In some embodiments, the adaptive member 122 is located at the concave end of the composite blade portion 12, and the hard reinforcement member 123 is located at the convex end of the composite blade portion 12. At low temperature or normal temperature, the adaptive member 122 is in a soft state, and under the action of the hard reinforcement member 123, the composite blade portion 12 is in the first state 4; when the temperature rises to the phase transition temperature T, the adaptive member 122 shrinks and curls and changes to a hard state, driving the composite blade portion 12 to adjust to the second state 5.

[0055] In other embodiments, the adaptive member 122 is located at the convex end of the composite blade portion 12, and the hard reinforcement member 123 is located at the convex end of the composite blade portion 12. At low temperature or normal temperature, the adaptive member 122 is in a hard state, and the composite blade portion 12 is in a first state 4; when the temperature rises to the phase transition temperature T, the adaptive member 122 changes to a soft state, and the resilience generated by the hard reinforcement member 123 drives the composite blade portion 12 to adjust to the second state 5.

[0056] Reference Figure 2 and Figure 3 In this embodiment, the adaptive member 122 is a shape memory sheet 1221 made of NiTi memory alloy, and the phase transition temperature is Af<60℃, Mf>30℃. The shape memory sheet 1221 is located at the concave end of the composite blade portion 12, and the hard reinforcement member 123 is located at the convex end of the composite blade portion 12.

[0057] Reference Figure 2 , the thickness of the composite blade portion 12 ranges from 2-3mm, and the thickness of the hard reinforcement 123 ranges from 0.3-1mm. The thickness of the shape memory sheet 1221 is selected according to the working force value or working pressure of the coolant circulation pump. In some embodiments, the maximum working force value of the coolant circulation pump after composite heating is 11.9N, the maximum working pressure is 0.8Mpa, and the thickness of the shape memory sheet 1221 is 0.5mm; in other embodiments, the maximum working force value of the coolant circulation pump after composite heating is 17.8N, the maximum working pressure of the cooling pump is 1.2MPa, and the thickness of the shape memory sheet 1221 can be 0.8mm; in other embodiments, the maximum working force value of the coolant circulation pump after composite heating is greater than 24.8N, the maximum working pressure of the cooling pump is 1.8MPa, and the thickness of the shape memory sheet 1221 is greater than 1mm and less than 1 / 2 of the thickness of the composite blade portion 12.

[0058] Reference Figure 3 In this embodiment, the length of the shape memory sheet 1221 is 2 / 3 of the silicone coating 121, the aspect ratio is 3:1, and the shape memory sheet 1221 is located at the outer edge of the silicone coating 121 away from the hard mounting end 11, and the distance between the shape memory sheet 1221 and the hard mounting end 11 is greater than 1 / 4 of the length of the silicone coating 121.

[0059] In some embodiments, the rigid reinforcement 123 may be a plurality of evenly distributed long fiber glass fibers; in other embodiments, the rigid reinforcement 123 may be a fiberglass mesh.

[0060] Reference Figure 2 and Figure 3 In this embodiment, the hard reinforcement 123 is a plurality of long fiber glass fibers evenly arranged along the length direction of the composite blade portion 12, and the length of the long fiber glass fibers is equal to the length of the composite blade portion 12. The hard reinforcement 123 provides strength support and resilience after cooling for the composite blade portion 12.

[0061] The implementation principle of an adaptive variable blade 1 for a coolant circulation pump in the embodiment of the present application is:

[0062] The composite blade portion 12 has a first state 4 and a second state 5. When the coolant temperature is low, at low temperature or room temperature, the coolant flow rate is low. At this time, the shape memory sheet 1221 is in a soft state. Under the action of the hard reinforcement 123, the composite blade portion 12 is in the first state 4. The impeller fluid flux is large, so that the coolant circulation pump has a higher cooling efficiency at a lower temperature.

[0063] As the impeller rotates, the coolant temperature increases to reach the phase change temperature T of the shape memory sheet 1221, the viscosity of the coolant decreases, and the flow rate increases. At this time, the shape memory sheet 1221 shrinks and curls and turns into a hard state, driving the composite blade portion 12 to adjust to the second state 5, so that the impeller blades of the coolant circulation pump reach the optimal spacing at the optimal working temperature of the coolant.

[0064] Example 2

[0065] This embodiment is basically the same as embodiment 1, except that Figure 4 In this embodiment, the length of the shape memory sheet 1221 is 3 / 4 of the length of the silicone coating 121 , the aspect ratio is 4:1, and the distance between the shape memory sheet 1221 and the hard mounting end 11 is 1 / 4 of the length of the silicone coating 121 .

[0066] Example 3

[0067] This embodiment is basically the same as embodiment 1, except that Figure 5 In this embodiment, the length of the shape memory sheet 1221 is 1 / 3 of the silicone coating 121, the aspect ratio is 2:1, and the shape memory sheet 1221 is located at the outer edge of the silicone coating 121 away from the rigid mounting end 11, and the distance between the shape memory sheet 1221 and the rigid mounting end 11 is greater than 1 / 4 of the length of the silicone coating 121.

[0068] Example 4

[0069] This embodiment is basically the same as embodiment 1, except that Figure 6 In this embodiment, the length of the shape memory sheet 1221 is 1 / 4 of the silicone coating 121, the diameter-to-length ratio is 1:1, and the shape memory sheet 1221 is located at the outer edge of the silicone coating 121 away from the rigid mounting end 11, and the distance between the shape memory sheet 1221 and the rigid mounting end 11 is greater than 1 / 4 of the length of the silicone coating 121.

[0070] Example 5

[0071] This embodiment provides a method for preparing an adaptive variable blade for a coolant circulation pump, comprising the following steps:

[0072] The adaptive part is eccentrically placed in the mold 1, and silicone is injected to obtain the adaptive layer after molding; in this embodiment, the adaptive part is a shape memory sheet made of NiTi memory alloy;

[0073] The hard reinforcement members are evenly placed in the second mold along the length direction, and silicone is injected to obtain a reinforcement layer after molding; in this embodiment, the hard reinforcement members are multiple long fiber glass fibers;

[0074] The adaptive layer and the reinforcing layer are stacked and placed in the mold three, with the adaptive layer located at the concave end and the reinforcing layer located at the convex end, and silicone is injected to obtain the composite blade part after molding;

[0075] The composite blade part is connected to the hard mounting part by nested injection molding to obtain an adaptive variable blade.

[0076] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adaptive variable blade for a coolant circulation pump, characterized in that: The invention comprises a hard mounting portion (11) and a composite blade portion (12), wherein the hard mounting portion (11) is used for mounting the composite blade portion (12); the composite blade portion (12) comprises an adaptive member (122), a hard reinforcing member (123) and a silicone coating member (121); the adaptive member (122) and the hard reinforcing member (123) are stacked and coated inside the silicone coating member (121), and the adaptive member (122) and the hard reinforcing member (123) are respectively located at the concave end or the convex end of the composite blade portion (12) in the thickness direction; the silicone coating member (121) is connected to the hard mounting portion (11); the adaptive member (122) increases or decreases the bending angle of the composite blade portion (12) under the stimulation of external temperature; The length of the adaptive member (122) is 1 / 4-3 / 4 of the length of the composite blade portion (12); the length-to-width ratio of the adaptive member (122) is 4:1-1:1; and in the length direction of the composite blade portion (12), the distance between the adaptive member (122) and the hard mounting portion (11) is not less than 1 / 4 of the length of the composite blade portion (12).

2. The adaptive variable vane for a coolant circulation pump according to claim 1, characterized in that: The composite blade portion (12) has a first state (4) and a second state (5). Under external temperature stimulation, the composite blade portion (12) can be located in the first state (4), or the second state (5), or any position between the first state (4) and the second state (5).

3. The adaptive variable vane for a coolant circulation pump according to claim 2, characterized in that: In the second state (5), the composite blade portion (12) is in a working state at an optimal working temperature of the coolant; and the angle between the first state (4) and the second state (5) is not less than 20°.

4. The adaptive variable vane for a coolant circulation pump according to claim 1, characterized in that: The adaptive component (122) is a shape memory sheet (1221) made of a NiTi memory alloy; the adaptive component (122) is located at the convex end of the composite blade portion (12) in the thickness direction, and the hard reinforcement component (123) is located at the concave end of the composite blade portion (12) in the thickness direction.

5. The adaptive variable vane for a coolant circulation pump according to claim 4, characterized in that: The phase change temperature of the shape memory sheet (1221) is: Af<60℃, Mf>30℃.

6. The adaptive variable vane for a coolant circulation pump according to claim 1, characterized in that: The thickness of the composite blade portion (12) is 2-3 mm, the thickness of the adaptive member (122) is 0.5-1.5 mm, and the thickness of the hard reinforcement member (123) is 0.3-1 mm.

7. The adaptive variable vane for a coolant circulation pump according to claim 1, characterized in that: The hard reinforcement (123) is a plurality of evenly distributed long fiber glass fibers.

8. The adaptive variable vane for a coolant circulation pump according to claim 1, characterized in that: The hard reinforcement member (123) is a glass fiber mesh.

9. The adaptive variable vane for a coolant circulation pump according to claim 1, characterized in that: The silica gel coating (121) is made of PDMS.

10. A method for preparing the adaptive variable blades for a coolant circulation pump according to claim 1, characterized in that: The following steps are involved: Placing the adaptive member (122) in a mold, injecting silicone, and molding to obtain an adaptive layer; Placing the hard reinforcement member (123) in a mold, injecting silica gel, and molding to obtain a reinforcement layer; The adaptive layer and the reinforcing layer are stacked and placed in a mold, and silicone is injected to obtain a composite blade portion (12) after molding; The composite blade part (12) is connected to the hard mounting part (11) by nested injection molding to obtain an adaptive variable blade for a coolant circulation pump.

Images