Anti-freezing water pump and anti-freezing structure thereof

Abstract

The anti-freezing water pump comprises a pump body and a valve body used for being connected to the pump body, one end of the valve body is provided with an opening used for being communicated with the interior of the pump body, and a valve element used for sealing the opening is connected into the valve body in a sliding mode. According to the design of the anti-freezing structure on the pump body, when water remains in the pump body and starts to freeze, the water pressure in the pump body starts to rise, along with the increase of the freezing degree, the pressure is increased and is larger than the elastic force of the reset piece, at the moment, the valve element is jacked open, the space in the pump body is increased, and the anti-freezing structure is arranged on the pump body. Finally, the anti-freezing effect is achieved, and meanwhile the economical efficiency is well considered.

Description

Technical Field

[0001] The utility model relates to the field of water pumps, in particular to an anti-freezing water pump and its anti-freezing structure. Background Technique

[0002] In some cold regions, whenever the water pump is used up, the water in the pump body must be drained, otherwise the water pump is often damaged when the water in the pump body freezes. In actual use, there are often situations where the water pump is damaged due to forgetting to drain the water.

[0003] Currently, by setting a heating device inside or outside the pump, the water temperature is maintained above 0°C through the heating device. Such a method is very power-consuming and uneconomical. Summary of the Utility Model

[0004] In order to further balance the anti-freezing performance and economy, this application provides an anti-freezing structure.

[0005] This application provides an anti-freezing structure, adopting the following technical scheme:

[0006] An anti-freezing structure includes a valve body for connecting to a water pump. One end of the valve body has an opening for communicating with the inside of the water pump. A valve core for closing the opening is slidably connected inside the valve body, and a reset member for driving the valve core to maintain the state of closing the opening is arranged on the valve body.

[0007] Optionally, a valve seat is arranged inside the valve body. The valve seat has a guide groove, and the valve core has a guide post slidably adapted to the guide groove.

[0008] Optionally, a drainage hole axially penetrating is opened on the valve seat.

[0009] Optionally, a sliding groove for the valve core to slide is provided inside the valve body, and a first sealing ring is sleeved on the valve core.

[0010] Optionally, the first sealing ring is sleeved on one end of the valve core facing the opening, and one side of the first sealing ring abuts against the end wall of the sliding groove.

[0011] Optionally, an annular groove is opened on the outer wall of the valve core, the first sealing ring is sleeved at the annular groove, and the first sealing ring abuts against the side wall of the sliding groove.

[0012] Optionally, the valve body has a connection section for connecting to the water pump, and a second sealing ring is sleeved on the connection section.

[0013] Optionally, the connection section has a threaded portion for threaded connection.

[0014] Optionally, the valve seat is detachably connected to the valve body.

[0015] The present application also provides an antifreeze water pump, which has the advantages of both antifreeze performance and economy, and adopts the following technical solution:

[0016] An antifreeze water pump comprises a pump body and the above-mentioned antifreeze structure, wherein a drain port is arranged on the pump body, and the antifreeze structure is arranged at the drain port of the pump body.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. The design of the antifreeze structure on the pump body. When there is residual water in the pump body and it begins to freeze, the water pressure in the pump body begins to rise. As the degree of freezing increases, the pressure increases and is greater than the elastic force of the reset part. At this time, the valve core is pushed open and the space in the pump body is increased, which ultimately achieves both antifreeze effect and economic efficiency.

[0019] 2. The antifreeze structure is set at the drain port of the pump body. When the valve core is pushed open, some residual water in the pump body can be discharged through the drain port, ensuring that there is enough space inside to meet the increase in volume of the residual water after freezing. The antifreeze purpose can be achieved while draining water, realizing the multi-purpose of the drain port;

[0020] 3. The cooperation of the guide column and the guide groove effectively improves the movement stability of the valve core. The first sealing ring and the second sealing ring realize multiple sealing, which effectively improves the sealing performance of the pump body at the drain port. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the overall structural diagram of Example 1.

[0022] Figure 2 It is a display diagram of Example 1 at the antifreeze structure.

[0023] Figure 3 This is a display diagram of Example 2 at the antifreeze structure.

[0024] Description of reference numerals:

[0025] 1. Pump body; 2. Motor; 3. Water inlet; 4. Water outlet; 5. Drain outlet; 6. Valve body; 7. Valve core; 8. Opening; 9. Reset member; 10. Valve seat; 11. First sealing ring; 12. Slide groove; 13. Drain hole; 14. Guide column; 15. Guide groove; 16. Connecting section; 17. Second sealing ring; 18. Mounting groove; 19. Threaded part; 20. Extension section; 21. Ring groove. DETAILED DESCRIPTION

[0026] The following is combined with Figures 1-3 This application is described in further detail.

[0027] An antifreeze water pump, such as Figure 1 andFigure 2 As shown in the figure, it includes a pump body 1 and a motor 2. An inlet 3 and an outlet 4 are provided on the pump body 1, and a drain port 5 is opened at the bottom of the pump body 1. The drain port 5 is located below the inlet 3, and an anti-freezing structure is provided at the drain port 5.

[0028] As Figure 2 As shown in the figure, the anti-freezing structure includes a valve body 6 and a valve core 7. The valve body 6 is fixedly installed at the drain port 5 of the pump body 1. One end of the valve body 6 has an opening 8 communicating with the inside of the pump body 1. The valve core 7 is horizontally slidably connected to the valve body 6 along the axis. The valve core 7 is used to close the opening 8. A reset member 9 for driving the valve core 7 to always abut and close the opening 8 is provided in the valve body 6. In this embodiment, the reset member 9 is a spring. A valve seat 10 is also provided inside the valve body 6. One end of the spring is fixed on the valve seat 10, and the other end is fixed on the valve core 7. The valve core 7 is always kept in a state of closing the opening 8 by the elastic force of the reset member 9. The pressure provided by the reset member 9 is higher than the maximum water pressure that can be generated during the normal operation of the water pump. Therefore, the valve core 7 will not be pushed open during normal operation. When the water in the pump body 1 starts to freeze, the water at the wall of the pump body 1 starts to freeze first and its volume increases. At this time, the water pressure in the pump body 1 starts to rise. As the degree of freezing increases, the pressure increases and is greater than the spring force. At this time, the valve core 7 is pushed open, and the space inside the pump body 1 increases, ultimately achieving both anti-freezing effect and good economy.

[0029] As Figure 2 As shown in the figure, a first sealing ring 11 is provided on the side of the valve core 7 close to the opening 8. The first sealing ring 11 is sleeved on the valve core 7. A sliding groove 12 for the horizontal axial movement of the valve core 7 is provided in the valve body 6. The first sealing ring 11 abuts against the end wall of the sliding groove 12 close to the opening 8 to achieve sealing. In addition, an axially penetrating drain hole 13 is opened on the valve seat 10. A plurality of drain holes 13 are evenly distributed around the circumference. The drain holes 13 communicate the sliding groove 12 with the outside. With the design of the drain holes 13, after the valve core 7 is pushed open, the water inside the pump body 1 can be drained to the outside through the drain holes 13, ensuring that there is enough space inside after the water is drained to meet the space required for the volume increase of the remaining frozen water. The purpose of anti-freezing is achieved while draining water, realizing multiple functions at the drain port 5. In other embodiments, the position of the anti-freezing structure design can be set at different heights of the pump body 1 to retain the remaining water level as required. Of course, the set height should ensure that there is enough space inside after the water is drained to meet the space required for the volume increase of the remaining frozen water.

[0030] As Figure 2As shown in the figure, a guide post 14 protrudes from one side of the valve core 7 facing the valve seat 10. A guide groove 15 that is slidably adapted to the guide post 14 is provided at the center of the valve seat 10. The guide post 14 passes through the reset member 9 and cooperates with the guide groove 15. By means of the cooperation between the guide post 14 and the guide groove 15, the stability of the horizontal movement of the valve core 7 is effectively improved. In this embodiment, the valve seat 10 is detachably connected to the valve body 6, and the valve seat 10 is threadedly connected to the valve body 6, and the valve seat 10 can be independently disassembled and replaced as needed.

[0031] As Figure 2 shown, one end of the valve body 6 has a connection section 16 connected to the pump body 1. A second sealing ring 17 is provided on the connection section 16. An installation groove 18 for sleeving the second sealing ring 17 is provided on the connection section 16. At the same time, the connection section 16 also has a threaded portion 19 threadedly connected to the pump body 1. By means of the threaded portion 19, the valve body 6 can be detachably connected to the pump body 1, and the combination of the first sealing ring 11 and the second sealing ring 17 with the threaded connection can achieve multiple seals at the connection, effectively improving the waterproof performance of the connection and avoiding the phenomenon of leakage at this place. In this embodiment, both the first sealing ring 11 and the second sealing ring 17 are O-rings.

[0032] Embodiment 2

[0033] An antifreeze water pump, as Figure 3 shown, the main difference from Embodiment 1 lies in the different antifreeze structures. In the antifreeze structure of this embodiment, the length of the valve body 6 is greater than that of Embodiment 1. The valve body 6 has an extension section 20 extending into the pump body 1 at the connection section 16, and the sliding groove 12 is provided in the extension section 20, so that the length of the sliding groove 12 is effectively increased, enabling the valve core 7 to have a greater sliding stroke. In addition, an annular groove 21 is provided on the side wall of the valve core 7, and the first sealing ring 11 is sleeved and installed at the annular groove 21. The first sealing ring 11 abuts against the side wall of the sliding groove 12 to achieve sliding sealing. The antifreeze structure of this embodiment is applicable to an environment where water cannot be discharged. The spring force is also higher than the maximum water pressure that can be generated during the normal operation of the water pump. After the water freezes and pushes the valve core 7 away, the valve core 7 and the valve body 6 still form a sealed cavity, and the water will not flow out. As the valve core 7 moves outwards continuously, the space in the pump body 1 increases continuously, achieving the purpose of antifreeze without water discharge.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An anti-freezing structure, characterized in that: It includes a valve body (6) for connecting to a water pump. One end of the valve body (6) has an opening (8) for communicating with the inside of the water pump. A valve core (7) for closing the opening (8) is slidably connected inside the valve body (6), and a reset member (9) for driving the valve core (7) to maintain the state of closing the opening (8) is arranged on the valve body (6).

2. The anti-freezing structure according to claim 1, characterized in that: A valve seat (10) is arranged inside the valve body (6). A guide groove (15) is formed on the valve seat (10), and a guide post (14) slidably adapted to the guide groove (15) is arranged on the valve core (7).

3. The anti-freezing structure according to claim 2, wherein: A drain hole (13) axially penetrating is formed on the valve seat (10).

4. The anti-freezing structure according to claim 1 or 2, characterized in that: A sliding groove (12) for the valve core (7) to slide is formed inside the valve body (6), and a first sealing ring (11) is sleeved on the valve core (7).

5. The anti-freezing structure according to claim 4, wherein: The first sealing ring (11) is sleeved on one end of the valve core (7) facing the opening (8), and one side of the first sealing ring (11) abuts against the end wall of the sliding groove (12).

6. The anti-freezing structure according to claim 4, characterized in that: A ring groove (21) is formed on the outer wall of the valve core (7), the first sealing ring (11) is sleeved at the ring groove (21), and the first sealing ring (11) abuts against the side wall of the sliding groove (12).

7. An anti-freezing structure according to claim 4, characterized in that: The valve body (6) has a connection section (16) for connecting to the water pump, and a second sealing ring (17) is sleeved on the connection section (16).

8. The anti-freezing structure according to claim 7, wherein: A threaded portion (19) for threaded connection is formed on the connection section (16).

9. The anti-freezing structure according to claim 2, wherein: The valve seat (10) is detachably connected to the valve body (6).

10. An antifreeze water pump, characterized in that: It includes a pump body (1) and the anti-freezing structure according to any one of claims 1-9. A drain port (5) is arranged on the pump body (1), and the anti-freezing structure is arranged at the drain port (5) of the pump body (1).

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