Pressure relief structure of cooling liquid kettle

Abstract

The utility model relates to the technical field of cooling liquid kettles, in particular to a cooling liquid kettle pressure relief structure which comprises a kettle body, a liquid inlet pipe is arranged on the top face of the kettle body, a pressure relief cylinder is arranged in the liquid inlet pipe, a pressure relief cavity is formed in the kettle body, and a pressure relief opening is formed in the side wall of the pressure relief cylinder. The pressure relief cylinder is communicated with the pressure relief cavity through the pressure relief opening, a cover body covers a pipe opening of the liquid inlet pipe in a threaded mode, a blocking cylinder is arranged on the inner side of the cover body, the blocking cylinder is connected with the pressure relief cylinder in an inserted mode and arranged on the pressure relief cylinder in a blocking mode, and through holes are formed in the circumferential side of the blocking cylinder. The blocking cylinder is communicated with the pressure relief cylinder and the pressure relief cavity through the through hole, and the blocking cylinder is provided with an automatic opening and closing mechanism used for opening and closing the through hole. The cooling liquid kettle has the effects of replacing a pressure regulating valve and conveniently and automatically regulating the pressure in the cooling liquid kettle.

Description

Technical Field

[0001] The present application relates to the technical field of coolant pots, and in particular to a pressure relief structure for a coolant pot. Background Art

[0002] A coolant pot, also known as an expansion pot or a coolant reservoir, is an important component in an automotive cooling system. When the automotive engine is running, the coolant is heated by the heat of the engine during the circulation process. The hot liquid expands, causing the pressure in the cooling system to increase. This increase in pressure causes some of the coolant to be pushed into the coolant pot, and at the same time, the gas (usually air) in the pot is compressed, resulting in the air pressure inside the pot.

[0003] Currently, the coolant pot is usually fixedly connected with a pressure relief pipe, and a pressure regulating valve is fixedly connected to the pressure relief pipe. When the air pressure inside the pot is generated and the air pressure inside the pot exceeds the preset value of the pressure regulating valve, the air pressure inside the pot opens the pressure regulating valve, and the air pressure inside the pot is then discharged to the outside of the coolant pot through the pressure relief pipe.

[0004] However, since the pressure regulating valve is an electronic component, it is prone to premature wear and damage under the working condition of a long-term high-temperature environment, and finally loses the function of pressure regulation. Utility Model Content

[0005] In order to replace the pressure regulating valve and facilitate the automatic regulation of the pressure inside the coolant pot, the present application provides a pressure relief structure for a coolant pot.

[0006] A pressure relief structure for a coolant pot provided by the present application adopts the following technical solution:

[0007] A pressure relief structure for a coolant pot includes a pot body. A liquid inlet pipe is provided on the top surface of the pot body. A pressure relief cylinder is provided inside the liquid inlet pipe. A pressure relief cavity is provided inside the pot body. A pressure relief opening is formed on the side wall of the pressure relief cylinder. The pressure relief cylinder is communicated with the pressure relief cavity through the pressure relief opening. A cover body is threadedly covered on the pipe orifice of the liquid inlet pipe. A plug cylinder is provided inside the cover body. The plug cylinder is inserted into and plugs the pressure relief cylinder. Through holes are formed on the circumferential side of the plug cylinder. The plug cylinder is communicated with the pressure relief cylinder and the pressure relief cavity respectively through the through holes. The plug cylinder is provided with an automatic opening and closing mechanism for opening and closing the through holes.

[0008] By adopting the above technical solution, since the cover body is threadedly connected to the nozzle of the liquid inlet pipe, and the plugging cylinder is inserted and plugged into the pressure relief cylinder, therefore, the air pressure cannot be discharged outside the kettle through the liquid inlet pipe. And when the internal pressure of the kettle is too high, the air pressure opens the through hole through the automatic opening and closing mechanism, and then the air pressure is discharged into the pressure relief cylinder from the through hole, and then the air pressure is discharged into the pressure relief cavity from the pressure relief port opened on the inner wall of the pressure relief cylinder. Also, when the air pressure decreases, the through hole is closed again through the automatic opening and closing mechanism. Under the action of the automatic opening and closing mechanism, the through hole is automatically opened and closed, so as to realize automatic pressure relief, which is beneficial to improving the convenience of automatically reducing the pressure in the coolant kettle.

[0009] Optionally, the automatic opening and closing mechanism includes a pressing cover and a first spring. A pressing ring platform is arranged on the inner wall of the plugging cylinder. The pressing ring platform is arranged below the through hole. The pressing cover covers the top surface of the pressing ring platform. A top seat is arranged above the pressing ring platform. The plugging cylinder is provided with a connecting component for fixing the top seat. The first spring is arranged between the top seat and the pressing cover. One end of the first spring is connected to the top seat, and the other end of the first spring is connected to the top surface of the pressing cover. The plugging cylinder is provided with a limiting component for limiting the movement of the pressing cover.

[0010] By adopting the above technical solution, under the elastic force of the first spring, the pressing cover abuts against the top surface of the pressing ring platform. At this time, the through hole is in a closed state. When the pressure in the kettle is too high, the air pressure squeezes the pressing cover upward, so that the pressing cover squeezes the first spring, and the pressing cover is separated from the pressing ring platform. At this time, the through hole is in an open state, and the air pressure then sequentially passes through the through hole and the pressure relief port and is discharged into the pressure relief cavity. Also, when the air pressure decreases, the first spring moves back to its original position and finally drives the pressing cover to reset and abut against the top surface of the pressing ring platform, closing the through hole again, which is beneficial to improving the stability of the automatic pressure relief of the kettle.

[0011] Optionally, the limiting component includes a snap ring. A limiting seat is arranged inside the pressing ring platform. A positioning cylinder is arranged on the top surface of the limiting seat. The top end of the positioning cylinder penetrates through the pressing cover and extends above the pressing cover. The snap ring is integrally formed on the side wall of the top end of the positioning cylinder. The plugging cylinder is provided with an elastic member for cooperatively positioning the limiting seat.

[0012] By adopting the above technical solution, when the air pressure drives the pressing cover to squeeze upward, the pressing cover slides upward along the side wall of the positioning cylinder, and the snap ring limits the stroke of the pressing cover, which is beneficial to improving the stability of the lifting movement of the pressing cover in the plugging cylinder.

[0013] Optionally, the elastic member is a second spring. A bottom support frame is arranged on the bottom surface of the pressing ring platform. The second spring is arranged between the bottom support frame and the limiting seat. One end of the second spring is fixedly connected to the limiting seat, and the other end of the second spring is fixedly connected to the bottom support frame.

[0014] By adopting the above technical solution, when the gland presses against the top surface of the gland ring platform, the gland simultaneously squeezes the limit seat, and under the action of the second spring, the limit seat is closely attached to the gland. When the gland is squeezed upward and presses against the snap ring, the second spring pulls the limit seat in the reverse direction, which is beneficial to the stability of the up-and-down movement of the gland in the plug barrel.

[0015] Optionally, a pressure relief hole is provided through one side of the positioning cylinder.

[0016] By adopting the above technical solution, when the pressure lifts the gland, the gland is separated from the gland seat. At this time, the pressure relief hole is opened, and part of the air pressure is finally discharged into the pressure relief cavity through the pressure relief hole, which is beneficial to improving the rate of air pressure discharge.

[0017] Optionally, at least two sealing rubber rings are clamped on the side wall of the plug barrel, and the at least two sealing rubber rings are in interference fit with the inner wall of the pressure relief barrel respectively.

[0018] By adopting the above technical solution, under the action of the sealing ring, it is beneficial to improve the sealing performance between the plug barrel and the pressure relief barrel.

[0019] Optionally, the connection assembly includes a connection block, the connection block is arranged on the side wall of the top seat, an L-shaped groove is opened at the top end of the plug barrel, and the connection block is clamped with the L-shaped groove.

[0020] By adopting the above technical solution, when assembling the top seat, first align the connection block on the top seat and insert it into the L-shaped groove. At this time, the connection block is clamped in the L-shaped groove, and the plug barrel is fixedly connected to the top seat through the connection block, which is beneficial to improving the convenience of the detachable connection between the top seat and the plug barrel.

[0021] Optionally, a pressure relief pipe is arranged in the kettle body, one end of the pressure relief pipe is fixedly communicated with the pressure relief cavity, and the other end of the pressure relief pipe extends outside the kettle body.

[0022] By adopting the above technical solution, when the air pressure is discharged into the pressure relief cavity, the air pressure is then discharged outside the kettle body through the pressure relief pipe, which is beneficial to improving the stability of the pressure discharge of the kettle body.

[0023] In summary, the present application includes the following beneficial technical effects:

[0024] Since the cover body is threadedly connected to the nozzle of the liquid inlet pipe, and the plugging cylinder is inserted and plugged into the pressure relief cylinder, the air pressure cannot be discharged outside the kettle through the liquid inlet pipe. Moreover, when the internal pressure of the kettle is too high, the air pressure opens the through hole through the automatic opening and closing mechanism, and then the air pressure is discharged into the pressure relief cylinder from the through hole, and then the air pressure is discharged into the pressure relief cavity from the pressure relief port opened on the inner wall of the pressure relief cylinder. Also, when the air pressure decreases, the through hole is closed again through the automatic opening and closing mechanism. Under the action of the automatic opening and closing mechanism, the through hole is automatically opened and closed, thereby realizing automatic pressure relief, which is beneficial to improving the convenience of automatically reducing the pressure in the coolant kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the coolant kettle of the present application;

[0026] Figure 2 is a sectional view of the coolant kettle of the present application;

[0027] Figure 3 is a sectional view of the plugging cylinder of the present application;

[0028] Figure 4 is a schematic diagram of the overall structure of the plugging cylinder of the present application;

[0029] Figure 5 is a schematic diagram of the overall structure of the top seat of the present application.

[0030] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Kettle body; 2. Liquid inlet pipe; 3. Pressure relief cylinder; 4. Pressure relief cavity; 5. Pressure relief port; 6. Cover body; 7. Plugging cylinder; 8. Through hole; 9. Pressing cover; 10. First spring; 11. Pressing ring platform; 12. Top seat; 13. Snap ring; 14. Limiting seat; 15. Positioning cylinder; 16. Second spring; 17. Bottom support frame; 18. Pressure relief hole; 19. Connecting block; 20. L-shaped groove; 21. Sealing rubber ring; 22. Pressure relief pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will further describe the present application in detail Figures 1-5 with reference to the accompanying drawings.

[0032] Embodiment:

[0033] Refer to Figures 1-3, A pressure relief structure for a coolant kettle, including a kettle body 1. A liquid inlet pipe 2 is fixedly connected and communicated with the top surface of the kettle body 1, and coolant is replenished into the kettle body 1 through the liquid inlet pipe 2. A pressure relief cylinder 3 is fixedly connected to the inner wall of the liquid inlet pipe 2, and the pressure relief cylinder 3 extends into the kettle body 1. A pressure relief port 5 is provided on the side wall of the pressure relief cylinder 3. At the same time, a pressure relief cavity 4 is provided in the kettle body 1, and the pressure relief cylinder 3 is communicated with the pressure relief cavity 4 through the pressure relief port 5. The pipe orifice of the liquid inlet pipe 2 is threadedly connected with a cover body 6, and the cover body 6 is used to close the liquid inlet pipe 2. A plug cylinder 7 is detachably connected to the inner side of the cover body 6, and the plug cylinder 7 is inserted and blocked in the pressure relief cylinder 3. A through hole 8 is penetrated through the circumferential side of the plug cylinder 7, and the number of the through holes 8 is multiple. The multiple through holes 8 are respectively distributed in an annular array along the vertical central axis of the plug cylinder 7. Under the action of the through hole 8 and the pressure relief port 5, the plug cylinder 7, the pressure relief cylinder 3 and the pressure relief cavity 4 are communicated with each other. An automatic opening and closing mechanism is installed on the plug cylinder 7, and the automatic opening and closing mechanism is used to open and close the through hole 8 according to the air pressure in the kettle body 1, so as to discharge the air pressure in the kettle body 1.

[0034] Specifically, refer to Figure 2 and Figure 3 , The automatic opening and closing mechanism includes a pressure cover 9 and a first spring 10. A pressure ring platform 11 is integrally formed on the inner wall of the plug cylinder 7, and the pressure ring platform 11 is located below the through hole 8. The pressure cover 9 is slidably installed in the plug cylinder 7, and the pressure cover 9 covers the top surface of the pressure ring platform 11. A top seat 12 is installed above the pressure ring platform 11, and a connecting component is installed on the plug cylinder 7. The pressure ring platform 11 is detachably connected to the plug cylinder 7 through the connecting component. The first spring 10 is located between the top seat 12 and the pressure cover 9. One end of the first spring 10 is fixedly connected to the bottom surface of the pressure cover 9, and the other end of the first spring 10 is fixedly connected to the top surface of the pressure cover 9.

[0035] When the air pressure in the kettle body 1 is too high, the air pressure squeezes the pressure cover 9 upward, and the pressure cover 9 then squeezes the first spring 10. After the pressure cover 9 moves upward, the pressure cover 9 disengages from the pressure ring platform 11. At this time, the through hole 8 is opened, and the air pressure sequentially passes through the through hole 8 and the pressure relief port 5, and then is discharged into the pressure relief cavity 4. When the air pressure in the kettle body 1 decreases, the first spring 10 releases its elastic force and moves back to its original position. The first spring 10 drives the pressure cover 9 to move downward, and the pressure cover 9 re-covers the top surface of the pressure ring platform 11, so as to close the through hole 8.

[0036] Refer to Figure 3 , To improve the stability of the pressure cover 9 rising and falling in the plug cylinder 7, a limiting component is provided in the plug cylinder 7. The limiting component includes a snap ring 13. A limiting seat 14 is installed in the pressure ring platform 11. A positioning cylinder 15 is fixedly connected to the top surface of the limiting seat 14. The top end of the positioning cylinder 15 penetrates through the top cover and extends above the top cover, and the positioning cylinder 15 is inserted into the first spring 10. The snap ring 13 is integrally formed and fixed on the side wall of the top end of the positioning cylinder 15. The snap ring 13 is beneficial to prevent the pressure cover 9 from disengaging from the positioning cylinder 15.

[0037] Refer to Figure 3, and for the convenience of positioning the limit seat 14, an elastic member is installed on the plug cylinder 7, and the elastic member is the second spring 16. A bottom support frame 17 is fixed to the bottom surface of the pressing ring platform 11, and the second spring 16 is installed between the bottom support frame 17 and the limit seat 14. One end of the second spring 16 is fixedly connected to the top surface of the bottom support frame 17, and the other end of the second spring 16 is fixedly connected to the bottom surface of the limit seat 14.

[0038] Under the action of the second spring 16, the limit seat 14 moves upward and tightly abuts against the bottom surface of the gland 9. When the gland 9 is squeezed upward, the gland 9 moves upward along the positioning cylinder 15 and drives the limit seat 14 to be pulled upward through the snap ring 13, reducing the rigid fixation of the limit seat 14 and improving the stability of the lifting movement of the gland 9.

[0039] It is worth mentioning that Figure 3 , to improve the pressure relief rate in the pressure relief cylinder 3, a pressure relief hole 18 is penetrated through the side wall of the positioning cylinder 15. When the gland 9 is pushed upward by air pressure, the gland 9 moves upward along the vertical direction of the positioning cylinder 15. At this time, the pressure relief hole 18 is opened, and part of the air pressure passes through the pressure relief hole 18, the through hole 8, and the pressure relief port 5 in sequence, and finally is discharged into the pressure relief cavity 4.

[0040] Specifically, referring to Figure 4 and Figure 5 , the connecting assembly includes a connecting block 19. The number of connecting blocks 19 is three, and the three connecting blocks 19 are respectively fixed to the side wall of the top seat 12. L-shaped grooves 20 are respectively formed in the side wall of the plug cylinder 7 at positions corresponding to the three connecting blocks 19, and the three connecting blocks 19 are respectively slidably clamped with the three L-shaped grooves 20.

[0041] It should be noted that in this embodiment, the cover body 6 and the plug cylinder 7 are detachably fixedly connected. When assembling the cover body 6, the plug cylinder 7, and the top seat 12, first slide the connecting block 19 on the top seat 12 into the L-shaped groove 20 of the plug cylinder 7, and then detachably fix the plug cylinder 7 in the cover body 6.

[0042] Referring to Figure 3 , to further improve the sealing performance between the plug cylinder 7 and the pressure relief cylinder 3, two sealing rubber rings 21 are clamped on the side wall of the plug cylinder 7. One of the sealing rubber rings 21 is located above the pressure relief port 5, and the other sealing rubber ring 21 is located below the pressure relief port 5. Both sealing rubber rings 21 are in interference fit with the inner wall of the pressure relief cylinder 3, so as to play a sealing role.

[0043] It is worth noting that to facilitate the discharge of the air pressure in the pressure relief cavity 4, a pressure relief pipe 22 is fixedly welded in the kettle body 1. One end of the pressure relief pipe 22 is fixedly communicated with the side wall of the pressure relief cavity 4, and the other end of the pressure relief pipe 22 extends outside the kettle body 1. When the air pressure is discharged into the pressure relief cavity 4, the air pressure is then discharged outside the kettle body 1 through the pressure relief pipe 22.

[0044] Working principle of a pressure relief structure for a coolant kettle:

[0045] When the hot liquid in the kettle body 1 expands, the air pressure in the kettle body 1 increases. At this time, the air pressure squeezes the gland 9 upward, the gland 9 disengages from the pressure ring platform 11 and rises along the positioning cylinder 15. Part of the high air pressure is directly discharged into the pressure relief cylinder 3, and part of the air pressure is discharged into the pressure relief cylinder 3 through the pressure relief holes 18 on the positioning cylinder 15. The air pressure converged in the pressure relief cylinder 3 is then discharged into the pressure relief cavity 4 through the through hole 8 and the pressure relief port 5 in sequence, and finally the pressure is discharged from the pressure relief pipe 22 to the outside of the kettle body 1.

[0046] When the air pressure in the kettle body 1 tends to be balanced, the first spring 10 releases its elastic force and resets to drive the gland 9 downward. Under the elastic forces of the first spring 10 and the second spring 16, the gland 9 finally abuts against the top surface of the pressure ring platform 11 and the top surface of the limit seat 14, thereby closing the through hole 8 and the pressure relief holes 18.

[0047] In summary, the cooperation of the gland 9 and the first spring 10 is used to automatically relieve the high air pressure, thereby replacing the pressure regulating valve and improving the convenience of automatically regulating the pressure in the coolant kettle.

[0048] The above are all the preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A pressure relief structure for a coolant kettle, comprising a kettle body (1). A liquid inlet pipe (2) is provided on the top surface of the kettle body (1). A pressure relief cylinder (3) is arranged inside the liquid inlet pipe (2). A pressure relief cavity (4) is arranged inside the kettle body (1). A pressure relief opening (5) is formed on the side wall of the pressure relief cylinder (3). The pressure relief cylinder (3) is communicated with the pressure relief cavity (4) through the pressure relief opening (5). The pipe orifice of the liquid inlet pipe (2) is threadedly covered with a cover body (6). A plug cylinder (7) is arranged inside the cover body (6). The plug cylinder (7) is inserted into and blocks the pressure relief cylinder (3). Through holes (8) are formed on the circumferential side of the plug cylinder (7). The plug cylinder (7) is communicated with the pressure relief cylinder (3) and the pressure relief cavity (4) respectively through the through holes (8). The plug cylinder (7) is provided with an automatic opening and closing mechanism for opening and closing the through holes (8).

2. The pressure relief structure of a coolant kettle according to claim 1, characterized in that: The automatic opening and closing mechanism comprises a pressing cover (9) and a first spring (10). A pressing ring platform (11) is arranged on the inner wall of the plug cylinder (7). The pressing ring platform (11) is arranged below the through holes (8). The pressing cover (9) covers the top surface of the pressing ring platform (11). A top seat (12) is arranged above the pressing ring platform (11). The plug cylinder (7) is provided with a connecting component for fixing the top seat (12). The first spring (10) is arranged between the top seat (12) and the pressing cover (9). One end of the first spring (10) is connected to the top seat (12), and the other end of the first spring (10) is connected to the top surface of the pressing cover (9). The plug cylinder (7) is provided with a limiting component for limiting the movement of the pressing cover (9).

3. The pressure relief structure of a coolant kettle according to claim 2, characterized in that: The limiting component comprises a clamping ring (13). A limiting seat (14) is arranged inside the pressing ring platform (11). A positioning cylinder (15) is arranged on the top surface of the limiting seat (14). The top end of the positioning cylinder (15) penetrates through the pressing cover (9) and extends above the pressing cover (9). The clamping ring (13) is integrally formed on the side wall of the top end of the positioning cylinder (15). The plug cylinder (7) is provided with an elastic member for cooperatively positioning the limiting seat (14).

4. The pressure relief structure of a coolant kettle according to claim 3, characterized in that: The elastic member is a second spring (16). A bottom support frame (17) is arranged on the bottom surface of the pressing ring platform (11). The second spring (16) is arranged between the bottom support frame (17) and the limiting seat (14). One end of the second spring (16) is fixedly connected to the limiting seat (14), and the other end of the second spring (16) is fixedly connected to the bottom support frame (17).

5. The pressure relief structure of a coolant kettle according to claim 3, characterized in that: A pressure relief hole (18) is arranged through one side of the positioning cylinder (15).

6. The pressure relief structure of a coolant kettle according to claim 1, wherein: At least two sealing rubber rings (21) are clamped on the side wall of the plug cylinder (7). At least two sealing rubber rings (21) are in interference fit with the inner wall of the pressure relief cylinder (3) respectively.

7. A coolant kettle pressure relief structure according to claim 2, characterized in that: The connecting component comprises a connecting block (19). The connecting block (19) is arranged on the side wall of the top seat (12). An L-shaped groove (20) is formed at the top end of the plug cylinder (7). The connecting block (19) is clamped with the L-shaped groove (20).

8. A coolant pot pressure relief structure according to claim 1, characterized in that: A pressure relief pipe (22) is arranged inside the kettle body (1). One end of the pressure relief pipe (22) is fixedly communicated with the pressure relief cavity (4), and the other end of the pressure relief pipe (22) extends outside the kettle body (1).

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