Engine coolant freezing point detection device

Abstract

The utility model discloses engine coolant freezing point detection device relates to engine coolant detection technical field. Including coolant sample test tube, the mouth part of coolant sample test tube is closed and has fixed component, and the bottom joint of fixed component has agitating part, and agitating part includes pivot, spiral blade and anchor type stirring paddle, and spiral blade spiral fixed setting is in the lower part of pivot, and anchor type stirring paddle sets up in the upper portion of pivot, and the surface of pivot is provided with spiral flow guide groove. The position of spiral blade and anchor type stirring paddle in coolant sample test tube is adjusted with the clamping ring and the clamping column of elastic setting, and spiral blade cooperates with anchor type stirring paddle, and the synergistic effect of vertical direction eddy current and horizontal direction shearing force of coolant forms, eliminates the flow dead angle in coolant sample test tube, and the spiral flow guide groove on the surface of pivot uses coriolis effect and exports the bubble along the axial direction, and the negative pressure of cooperation air pressure pipe and vacuum pump is produced, and the residual rate of bubble is reduced.

Description

Technical Field

[0001] This utility model relates to the field of engine coolant testing technology, specifically to an engine coolant freezing point testing device. Background Technology

[0002] Engine coolant, commonly known as automotive antifreeze, is an essential cooling and heat dissipation medium for the engine cooling system. The freezing point of engine coolant is an important indicator. In order to prevent the water tank and engine block from cracking due to the engine coolant freezing in winter, freezing point tests of engine coolant are required in different regions.

[0003] Currently, existing engine coolant freezing point detection devices, when agitating the coolant to accelerate its cooling, are prone to creating eddy current dead zones due to their existing agitation structures (such as vertical linear motion agitation), leading to coolant component stratification. Furthermore, traditional agitator blade designs easily entrap air, forming bubbles larger than 1mm in diameter (comprising more than 5%), which affects the accuracy of refractive index measurements.

[0004] Therefore, we made improvements and proposed an engine coolant freezing point detection device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an engine coolant freezing point detection device, which solves the problem that the stirring structure of existing engine coolant freezing point detection devices is prone to stratification and air bubbles when stirring engine coolant.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an engine coolant freezing point detection device, including a coolant sample tube, a fixing component that is closed and fastened at the mouth of the coolant sample tube, a stirring component that is snapped into the bottom of the fixing component, and the stirring component being disposed in the inner cavity of the coolant sample tube;

[0007] The stirring component includes a rotating shaft, helical blades, and an anchor-type stirring paddle. The helical blades are helically fixed in the lower middle part of the rotating shaft, and the anchor-type stirring paddle is located in the upper part of the rotating shaft.

[0008] The surface of the rotating shaft is surrounded by a spiral guide groove with an inclination angle of 45°.

[0009] As a preferred embodiment, the upper end of the rotating shaft is fixedly provided with a snap-fit ​​shaft, which is located on the upper part of the anchor-type stirring paddle and is snap-fitted and fixedly installed with the fixing component.

[0010] As a preferred embodiment, the fixing component includes a sealing plug, a rubber sealing ring, a motor connecting pipe, a vacuum sealing bearing, and a retaining pipe. The rubber sealing ring is fixedly disposed at the bottom of the sealing plug, and the sealing plug has an installation hole in the middle. The vacuum sealing bearing is tightly fitted into the vacuum sealing bearing. The motor connecting pipe is tightly inserted into and rotatably disposed with the vacuum sealing bearing. The retaining pipe is fixedly disposed at the bottom of the motor connecting pipe and is disposed in the inner cavity of the coolant sample tube.

[0011] As a preferred embodiment, the axis of the rubber sealing ring is aligned with the axis of the sealing plug, and the rubber sealing ring is tightly fitted into the inner cavity of the coolant sample tube.

[0012] As a preferred embodiment, the motor connecting pipe and the clamping pipe are sealed and fixed by a sealing disc.

[0013] As a preferred embodiment, the snap-fit ​​shaft is a rectangular rod structure, the inner cavity of the snap-fit ​​tube is a rectangular cavity structure, and the snap-fit ​​shaft is inserted into the inner cavity of the snap-fit ​​tube.

[0014] As a preferred embodiment, the surface of the snap-fit ​​shaft is surrounded by a plurality of evenly distributed snap-fit ​​rings along its axis;

[0015] The lower part of the carding tube is symmetrically provided with spring blind holes, and the middle of the end of the spring blind hole near the inner cavity of the carding tube is provided with an extension hole, the diameter of the extension hole being smaller than the diameter of the spring blind hole;

[0016] The inner cavity of the protruding hole is fitted with a snap-fit ​​post. The head of the snap-fit ​​post has a hemispherical structure and is located in the inner cavity of the snap-fit ​​tube. The snap-fit ​​ring is snapped into the head of the snap-fit ​​post.

[0017] As a preferred embodiment, the bottom of the snap-fit ​​post is provided with a stop block, which is movably disposed in the spring blind hole;

[0018] The inner cavity of the spring blind hole is equipped with a spring, and a threaded plug is threadedly fixed at the opening of the spring blind hole. The spring is elastically positioned between the stop block and the threaded plug.

[0019] As a preferred embodiment, the upper side wall of the motor connecting pipe is threaded with a fixing bolt, and the head of the fixing bolt is located in the inner cavity of the motor connecting pipe.

[0020] As a preferred embodiment, the side wall of the sealing plug is provided with a pressure tube, which is connected to the inner cavity of the coolant sample tube and is connected to a vacuum pump.

[0021] This utility model has the following beneficial effects:

[0022] Pour a predetermined amount of engine coolant into the coolant sample tube, insert the snap-fit ​​shaft into the snap-fit ​​tube, and adjust the position of the spiral blade and the anchor agitator in the coolant sample tube by using the snap-fit ​​ring and the elastically set snap-fit ​​post. The spiral blade and the anchor agitator work together to form a vertical vortex and a horizontal shear force in the coolant, eliminating the dead flow angle in the coolant sample tube.

[0023] The spiral guide grooves on the surface of the rotating shaft utilize the Coriolis effect to guide the entrained air bubbles axially. Combined with the negative pressure generated by the air pressure pipe and vacuum pump, the residual rate of air bubbles is reduced.

[0024] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the engine coolant freezing point detection device of this utility model;

[0026] Figure 2 for Figure 1 A magnified cross-sectional view of section A;

[0027] Figure 3 for Figure 1 A magnified cross-sectional view of section B;

[0028] Figure 4 for Figure 2 A magnified schematic diagram of a portion of C;

[0029] In the diagram, 1. Coolant sample tube; 2. Fixed component; 3. Stirring component; 4. Rotating shaft; 5. Spiral blade; 6. Anchor-type stirring paddle; 7. Spiral guide groove; 8. Snap-fit ​​shaft; 9. Sealing plug; 10. Rubber sealing ring; 11. Motor connecting pipe; 12. Vacuum sealed bearing; 13. Snap-fit ​​pipe; 14. Sealing disc; 15. Snap-fit ​​ring; 16. Spring blind hole; 17. Protruding hole; 18. Snap-fit ​​post; 19. Stop block; 20. Spring; 21. Threaded plug; 22. Fixing bolt; 23. Air pressure pipe. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Please refer to the examples. Figures 1 to 4 This utility model provides a technical solution: an engine coolant freezing point detection device, including a coolant sample tube 1, a fixing component 2 that is closed and fastened at the mouth of the coolant sample tube 1, a stirring component 3 that is snapped into the bottom of the fixing component 2, and the stirring component 3 that is disposed in the inner cavity of the coolant sample tube 1.

[0033] The stirring component 3 includes a rotating shaft 4, a spiral blade 5, and an anchor-type stirring paddle 6. The spiral blade 5 is spirally fixed in the lower middle part of the rotating shaft 4, and the anchor-type stirring paddle 6 is disposed in the upper part of the rotating shaft 4.

[0034] The surface of the rotating shaft 4 is surrounded by a spiral guide groove 7, and the inclination angle of the spiral guide groove 7 is 45°.

[0035] The upper end of the rotating shaft 4 is fixedly provided with a snap-fit ​​shaft 8, which is located on the upper part of the anchor-type stirring paddle 6 and is snap-fitted and fixedly set with the fixing component 2.

[0036] The fixing component 2 includes a sealing plug 9, a rubber sealing ring 10, a motor connecting pipe 11, a vacuum sealing bearing 12, and a retaining pipe 13. The rubber sealing ring 10 is fixedly installed at the bottom of the sealing plug 9, and the sealing plug 9 has an installation hole in the middle. The vacuum sealing bearing 12 is tightly fitted into the vacuum sealing bearing 12. The motor connecting pipe 11 is tightly inserted and rotatably installed with the vacuum sealing bearing 12. The retaining pipe 13 is fixedly installed at the bottom of the motor connecting pipe 11 and is installed in the inner cavity of the coolant sample tube 1.

[0037] The axis of the rubber sealing ring 10 coincides with the axis of the sealing plug 9, and the rubber sealing ring 10 is tightly fitted into the inner cavity of the opening of the coolant sample tube 1.

[0038] The motor connecting pipe 11 and the clamping pipe 13 are sealed and fixed by a sealing disc 14.

[0039] The snap-fit ​​shaft 8 is a rectangular rod structure, and the inner cavity of the snap-fit ​​tube 13 is a rectangular cavity structure. The snap-fit ​​shaft 8 is inserted into the inner cavity of the snap-fit ​​tube 13.

[0040] The surface of the snap-fit ​​shaft 8 is surrounded by a plurality of evenly distributed snap-fit ​​rings 15 along its axis;

[0041] The lower part of the card connector 13 is symmetrically provided with spring blind holes 16, and the middle of one end of the spring blind hole 16 near the inner cavity of the card connector 13 is provided with an extension hole 17, the diameter of the extension hole 17 being smaller than the diameter of the spring blind hole 16.

[0042] The inner cavity of the protruding hole 17 is fitted with a snap-fit ​​post 18. The head of the snap-fit ​​post 18 is a hemispherical structure. The head of the snap-fit ​​post 18 is located in the inner cavity of the snap-fit ​​tube 13. The snap-fit ​​ring 15 is snap-fitted with the head of the snap-fit ​​post 18.

[0043] The bottom of the snap-fit ​​post 18 is provided with a stop 19, which is movably disposed in the spring blind hole 16;

[0044] The inner cavity of the spring blind hole 16 is provided with a spring 20, and the opening of the spring blind hole 16 is threadedly fixed with a threaded plug 21. The spring 20 is elastically disposed between the stop block 19 and the threaded plug 21.

[0045] The upper side wall of the motor connecting pipe 11 is threaded with a fixing bolt 22, and the head of the fixing bolt 22 is located in the inner cavity of the motor connecting pipe 11.

[0046] The sealing plug 9 has a pressure pipe 23 on its side wall. The pressure pipe 23 is connected to the inner cavity of the coolant sample tube 1 and is connected to a vacuum pump.

[0047] The working principle of this utility model:

[0048] Pour a predetermined amount of engine coolant into the coolant sample tube 1, insert the snap-fit ​​shaft 8 into the snap-fit ​​tube 13, and adjust the position of the spiral blade 5 and the anchor-type agitator 6 in the coolant sample tube 1 by using the snap-fit ​​ring 15 and the elastically set snap-fit ​​post 18. The spiral blade 5 and the anchor-type agitator 6 cooperate to form a vertical vortex and a horizontal shear force in the coolant, eliminating the dead flow angle in the coolant sample tube 1.

[0049] The spiral guide groove 7 on the surface of the rotating shaft 4 uses the Coriolis effect to guide the entrained air bubbles out along the axis. Combined with the negative pressure generated by the air pressure pipe 23 and the vacuum pump, the residual rate of air bubbles is reduced.

[0050] Then, the sealing plug 9 is fastened to the opening of the coolant sample tube 1, the rubber sealing ring 10 seals the coolant sample tube 1, the coolant sample tube 1 is fixedly placed in the cold bath device, the motor connecting pipe 11 is inserted with the stirring motor, the rotating shaft of the stirring motor is fixed to the motor connecting pipe 11 by the fixing bolt 22, the stirring motor is started, and the spiral blade 5 and the anchor stirring paddle 6 are driven to stir the engine coolant.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An engine coolant freezing point detection device, characterized in that: The coolant sample test tube (1) is sealed with a fixing component (2) at the mouth of the coolant sample test tube (1), and a stirring component (3) is attached to the bottom of the fixing component (2). The stirring component (3) is located in the inner cavity of the coolant sample test tube (1). The stirring component (3) includes a rotating shaft (4), a spiral blade (5) and an anchor-type stirring paddle (6). The spiral blade (5) is spirally fixed in the lower middle part of the rotating shaft (4), and the anchor-type stirring paddle (6) is located in the upper part of the rotating shaft (4). The surface of the rotating shaft (4) is surrounded by a spiral guide groove (7), and the inclination angle of the spiral guide groove (7) is 45°.

2. The engine coolant freezing point detection device according to claim 1, characterized in that: The upper end of the rotating shaft (4) is fixedly provided with a snap-fit ​​shaft (8), which is located on the upper part of the anchor-type stirring paddle (6). The snap-fit ​​shaft (8) is snapped and fixedly connected to the fixing component (2).

3. The engine coolant freezing point detection device according to claim 2, characterized in that: The fixing component (2) includes a sealing plug (9), a rubber sealing ring (10), a motor connecting pipe (11), a vacuum sealing bearing (12), and a clamping pipe (13). The rubber sealing ring (10) is fixedly installed at the bottom of the sealing plug (9). The sealing plug (9) has an installation hole in the middle. The vacuum sealing bearing (12) is tightly fitted into the vacuum sealing bearing (12). The motor connecting pipe (11) is tightly inserted into the vacuum sealing bearing (12) and rotates. The clamping pipe (13) is fixedly installed at the bottom of the motor connecting pipe (11) and is installed in the inner cavity of the coolant sample tube (1).

4. The engine coolant freezing point detection device according to claim 3, characterized in that: The axis of the rubber sealing ring (10) is set to coincide with the axis of the sealing plug (9), and the rubber sealing ring (10) is tightly fitted in the inner cavity of the mouth of the coolant sample tube (1).

5. The engine coolant freezing point detection device according to claim 3, characterized in that: The motor connecting pipe (11) and the clamping pipe (13) are sealed and fixed by a sealing plate (14).

6. The engine coolant freezing point detection device according to claim 3, characterized in that: The snap-fit ​​shaft (8) is a rectangular rod structure, and the inner cavity of the snap-fit ​​tube (13) is a rectangular cavity structure. The snap-fit ​​shaft (8) is inserted into the inner cavity of the snap-fit ​​tube (13).

7. The engine coolant freezing point detection device according to claim 3, characterized in that: The surface of the snap-fit ​​shaft (8) is surrounded by a plurality of evenly distributed snap-fit ​​rings (15) along its axis; The lower part of the card connector (13) is symmetrically provided with spring blind holes (16), and the middle part of one end of the spring blind hole (16) near the inner cavity of the card connector (13) is provided with an extension hole (17), the diameter of the extension hole (17) is smaller than the diameter of the spring blind hole (16); The inner cavity of the protruding hole (17) is fitted with a snap-fit ​​post (18). The head of the snap-fit ​​post (18) is a hemispherical structure. The head of the snap-fit ​​post (18) is located in the inner cavity of the snap-fit ​​tube (13). The snap-fit ​​ring (15) is snap-fitted to the head of the snap-fit ​​post (18).

8. The engine coolant freezing point detection device according to claim 7, characterized in that: The bottom of the snap-fit ​​post (18) is provided with a stop (19), which is movably disposed in the spring blind hole (16); The inner cavity of the spring blind hole (16) is provided with a spring (20), and the opening of the spring blind hole (16) is threaded with a threaded plug (21). The spring (20) is elastically positioned between the stop block (19) and the threaded plug (21).

9. The engine coolant freezing point detection device according to claim 3, characterized in that: The upper side wall of the motor connecting pipe (11) is threaded with a fixing bolt (22), and the head of the fixing bolt (22) is located in the inner cavity of the motor connecting pipe (11).

10. The engine coolant freezing point detection device according to claim 3, characterized in that: The sealing plug (9) is provided with a pressure tube (23) on its side wall. The pressure tube (23) is connected to the inner cavity of the coolant sample tube (1). The pressure tube (23) is connected to a vacuum pump.

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