Connecting structure of water pump and water supply system

Abstract

The utility model relates to a connecting structure of a water pump and a water supply system, which are used for connecting a water pump body and a valve body, the water pump body comprises a water pump connecting port, the valve body comprises a valve connecting port, and the connecting structure comprises a valve connecting port, a water pump connecting port, a locking nut and a pin column. Wherein one thread comprises a double-section external thread, and the other thread comprises a first internal thread; the double-section external thread comprises a first external thread and a second external thread which are opposite in thread screwing direction and are coaxially arranged, and the first external thread is located on the outer side of the water pump body; the pin columns are used for connecting the locking nuts and the corresponding body parts. By the adoption of the scheme, after the locking nut, the water pump body and the valve body are fixed through the pin shaft, the locking nut, the water pump body and the valve body do not rotate relatively any more, namely the connecting stability and sealing performance of the locking nut, the water pump body and the valve body are enhanced, and therefore the water leakage probability of the position of the connecting structure is reduced, and the durability of the connecting structure is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump connection, in particular to a water pump connection structure and a water supply system. Background Art

[0002] A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the liquid's energy and thus meeting various application requirements. Domestic water supply pumps primarily utilize this principle, pressurizing water from a source and delivering it to homes to meet residents' daily water needs.

[0003] Currently, in the field of domestic water supply, many pipe connections are sealed with raw tape, which is not only unsightly, but also unreliable and prone to water leakage. In addition, after long-term use, the connection between the valve and the water pump is prone to relative rotation, causing the connection to loosen and leak. Utility Model Content

[0004] Based on this, a water pump connection structure and a water supply system are provided to improve the problem in the prior art that the connection between the valve and the water pump is easily loosened, thereby causing water leakage.

[0005] On the one hand, the utility model provides a water pump connection structure for connecting a water pump body and a valve body, the water pump body including a water pump connection port, the valve body including a valve connection port, and the connection structure including the valve connection port, the water pump connection port, a locking nut and a pin:

[0006] Among the valve connection port and the water pump connection port, one includes a two-stage external thread, and the other includes a first internal thread;

[0007] The two-stage external thread includes a first external thread and a second external thread with opposite thread rotation directions and coaxially arranged, and the first external thread is located on the outside of the water pump body; the first internal thread is connected to the first external thread, and the locking nut is connected to the second thread; the pin is used to connect the locking nut and the main body component with the first internal thread.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] In one implementation, the valve connection port includes a two-stage external thread, and the water pump connection port includes a first internal thread;

[0010] The valve connection port is located above the water pump connection port, and the pin is used to connect the locking nut and the water pump body.

[0011] In one implementation,

[0012] Lock nut includes:

[0013] A first connecting portion, the first connecting portion being used to connect one end of a pin;

[0014] The water pump connection also includes:

[0015] There are at least two connecting lugs, which extend outward in the radial direction of the water pump connection port;

[0016] The second connecting hole is formed on the connecting lug and is used to connect the other end of the pin.

[0017] In one implementation,

[0018] The pins include:

[0019] The connecting end is columnar;

[0020] The clamping end is T-shaped, and the vertical section of the T is perpendicular to and connected to the connecting end;

[0021] The first connecting portion is also T-shaped, and the clamping end extends into the first connecting portion.

[0022] In one implementation manner, the first connecting portion is located above the locking nut, and the first connecting portion and the clamping end are clearance-fitted.

[0023] In one implementation, there are two connecting lugs, and the two connecting lugs are symmetrically arranged on the outer wall of the water pump connection port, and each connecting lug is provided with a second connecting hole.

[0024] In one implementation,

[0025] The pump body also includes:

[0026] The water pump inlet, the axial direction of the water pump inlet is perpendicular to the axial direction of the water pump connection port;

[0027] The valve body also includes:

[0028] Valve outlet, the axial direction of the valve outlet is perpendicular to the axial direction of the valve connection port;

[0029] The pin is used for connection positioning when the axes of the pump inlet and valve outlet are parallel.

[0030] In one implementation, the connection structure further includes:

[0031] The sealing ring is O-shaped and surrounds the middle of the two-section external thread.

[0032] In one implementation, the two-stage external thread further includes:

[0033] A transition section, wherein both axial ends of the transition section are respectively connected to the first external thread and the second external thread, and a sealing ring is sleeved on the transition section;

[0034] The radial dimension of the first external thread is smaller than the radial dimension of the second external thread, and the pitch of the first external thread is smaller than the pitch of the second external thread.

[0035] On the other hand, the utility model also provides a water supply system, including a connection structure of a water pump.

[0036] The beneficial effects of the present invention are as follows: the valve connecting port and the water pump connecting port are connected by a threaded structure, thereby improving the stability and sealing of the connection between the valve connecting port and the water pump connecting port; since the first external thread in the two-stage external thread is used to connect the first internal thread, and the second external thread in the two-stage external thread is used to connect the locking nut, the locking nut is fixed to the water pump body or the valve body by the pin, so that the locking nut and the water pump body or the valve body no longer rotate relative to each other; and since the thread rotation directions of the first external thread and the second external thread in the two-stage external thread are opposite, after being fixed by the pin shaft, the locking nut, the water pump body and the valve body will no longer rotate relative to each other, that is, the connection stability and sealing of the locking nut, the water pump body and the valve body are enhanced, thereby reducing the probability of water leakage at the connection structure position and effectively improving the durability of the connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 An exploded view of the connection structure of a water pump in one embodiment;

[0038] Figure 2 for Figure 1 A magnified view of the details at center A;

[0039] Figure 3 This is a schematic structural diagram of a water pump connection structure in one embodiment;

[0040] Figure 4 This is a schematic plan view of the connection structure of a water pump in one embodiment;

[0041] Figure 5 for Figure 4 Cross-sectional view at the middle BB;

[0042] Figure 6 for Figure 5 Enlarged detail of point C in the middle.

[0043] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0044] 10. Water pump connection port; 11. First internal thread; 12. Connection lug; 13. Second connection hole;

[0045] 20. Valve connection port; 21. First external thread; 22. Second external thread; 23. Transition section;

[0046] 30. Locking nut; 31. First connecting hole;

[0047] 40. Pin; 41. Connecting end; 42. Snap-on end;

[0048] 50. Sealing ring; 60. Water pump inlet; 70. Valve outlet. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0050] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Therefore, the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be changed at will, and the component layout may also be more complicated.

[0051] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size shall still fall within the scope of the technical contents disclosed in this utility model without affecting the efficacy and objectives that can be achieved by the present utility model.

[0052] A water pump connection structure, see Figure 1 、 Figure 2 and Figure 3 , used for connecting the water pump body and the valve body, the water pump body includes a water pump connecting port 10, the valve body includes a valve connecting port 20, and the connection structure includes the valve connecting port 20, the water pump connecting port 10, a locking nut 30 and a pin 40: in the valve connecting port 20 and the water pump connecting port 10, one includes a two-stage external thread, and the other includes a first internal thread 11; the two-stage external thread includes a first external thread 21 and a second external thread 22 with opposite thread rotation directions and coaxially arranged, and the first external thread 21 is located on the outside of the water pump body; the first internal thread 11 is connected to the first external thread 21, and the locking nut 30 is connected to the second thread; the pin 40 is used to connect the locking nut 30 and the body component with the first internal thread 11.

[0053] By adopting the solution of the present application, the valve connecting port 20 and the water pump connecting port 10 are connected by a threaded structure, thereby improving the stability and sealing of the connection between the valve connecting port 20 and the water pump connecting port 10; since the first external thread 21 in the two-stage external thread is used to connect the first internal thread 11, and the second external thread 22 in the two-stage external thread is used to connect the locking nut 30, the locking nut 30 is fixed to the water pump body or the valve body by the pin 40, so that the locking nut 30 and the water pump body or the valve body no longer rotate relative to each other; and since the first external thread 21 and the second external thread 22 in the two-stage external thread have opposite thread rotation directions, after being fixed by the pin shaft, the locking nut 30, the water pump body and the valve body will no longer rotate relative to each other, that is, the connection stability and sealing of the locking nut 30, the water pump body and the valve body are enhanced, thereby reducing the probability of water leakage at the connection structure position and effectively improving the durability of the connection structure.

[0054] In the embodiment, the two-stage external thread in this solution can be located on the valve connection port 20, in which case the first internal thread 11 is located on the water pump connection port 10; the two-stage external thread can also be located on the water pump connection port 10, in which case the first internal thread 11 is located on the valve connection port 20. When the pin 40 is connected, it can connect the lock nut 30 and the water pump body; the pin 40 can also be used to connect the lock nut 30 and the valve body; the specific connection position of the pin 40 depends on whether the first internal thread 11 belongs to the valve body or the water pump body. Therefore, the body component with the first internal thread 11 means that: when the first internal thread 11 is on the valve body, the pin 40 is used to connect the lock nut 30 and the valve body; when the first internal thread 11 is on the water pump body, the pin 40 is used to connect the lock nut 30 and the water pump body.

[0055] In some embodiments of this application, see Figure 1 and Figure 2 The valve connection port 20 includes a two-stage external thread, and the water pump connection port 10 includes a first internal thread 11. The valve connection port 20 is located above the water pump connection port 10, and the pin 40 is used to connect the lock nut 30 to the water pump body. Thus, by placing the two-stage external thread at the valve connection port 20, the first internal thread 11 at the water pump connection port 10, and the valve connection port 20 above the water pump connection port 10, the lock nut 30 and the water pump body can be connected sequentially from top to bottom via the pin 40, facilitating the connection of the pin 40 while preventing the pin 40, with its thickened head structure, from slipping out, thereby improving the stability of the pin 40 after connection.

[0056] In some embodiments of this application, see Figure 1 and Figure 2The locking nut 30 includes a first connecting portion, which is used to connect to one end of the pin 40. The water pump connection port 10 also includes a connecting lug 12, which has at least two connecting lugs and extends outward in the radial direction of the water pump connection port 10, and a second connecting hole. The connecting lug 12 is provided on the connecting lug 12 and is used to connect to the other end of the pin 40. In this way, by providing the first connecting portion on the locking nut 30, the first connecting portion is used to connect to one end of the pin 40; by providing the corresponding lug and second connecting hole on the water pump connection port 10, the second connecting hole is provided on the connecting lug 12, and the other end of the pin 40 is connected through the second connecting hole, thereby achieving the technical effect of simultaneously connecting the pin 40 to the locking nut 30 and the water pump connection port 10.

[0057] Specifically, when the pin 40 is connected to the water pump body, the pin 40 can be directly connected to the water pump connection port 10, or the pin 40 can be connected to other positions on the water pump body; when the pin 40 is directly connected to the water pump connection port 10, since the water pump connection port 10 is close to the locking nut 30, the length of the pin 40 extending out can be effectively reduced, thereby helping to reduce the complexity of the connection structure.

[0058] In some embodiments of this application, see Figure 1 and Figure 2 The pin 40 includes a connecting end 41 and a clamping end 42. The connecting end 41 is cylindrical; the clamping end 42 is T-shaped, and the vertical section of the T is perpendicular to and connected to the connecting end 41; the first connecting portion is also T-shaped, and the clamping end 42 extends into the first connecting portion. In this way, the clamping end 42 of the pin 40 is set in a T-shape, so that the cylindrical connecting end 41 of the pin 40 is perpendicular to the T-shaped clamping end 42. When the clamping end 42 is installed, the clamping end 42 is clamped into the first connecting portion, thereby increasing the clamping area between the clamping end 42 and the first connecting portion. When the clamping end 42 is tightly fitted, relative to the T-shaped structure of the entire pin 40, the structural setting of the present application increases the clamping area between the clamping end 42 and the first connecting portion, thereby increasing the friction between the clamping end 42 and the first connecting portion, effectively preventing the clamping end 42 from slipping out of the first connecting portion, thereby increasing the stability after the clamping end 42 is connected to the first connecting portion, and thus facilitating the improvement of the sealing performance of the connection structure.

[0059] In some embodiments of this application, see Figure 1 and Figure 2 The first connection portion is located above the locking nut 30, and a clearance fit is formed between the first connection portion and the clamping end 42. Thus, by providing the first connection portion above the locking nut 30, the pin 40 can be installed from top to bottom, thereby effectively preventing the pin 40 from sliding off the first connection portion and increasing the stability of the connection structure.

[0060] In some embodiments of this application, see Figure 1 and Figure 2 There are two connecting lugs 12, symmetrically arranged on the outer wall of the water pump connection port 10, and each connecting lug 12 is provided with a second connection hole. This evenly distributed arrangement of connecting lugs 12 facilitates balanced force distribution on the water pump connection port 10, preventing excessive force on a single connecting lug 12, thereby increasing the durability of the connecting lugs 12.

[0061] In the embodiment, the number of second connection holes opened on a single connection lug 12 can also be adaptively adjusted; the connection lug 12 is rectangular, and the second connection hole is opened in the middle of the connection lug 12; the locking nut 30 is a hexagonal nut, and the first connection portion is located in the middle of two opposite sides of the hexagonal locking nut 30.

[0062] In some embodiments of this application, see Figure 1 and Figure 2 The water pump body further includes a water pump inlet 60, the axial direction of which is perpendicular to the axial direction of the water pump connection port 10. The valve body further includes a valve outlet 70, the axial direction of which is perpendicular to the axial direction of the valve connection port 20. The pin 40 is used to connect and position the water pump inlet 60 and the valve outlet 70 when their axes are parallel. In this way, the water pump inlet 60 and the valve outlet 70 can serve as indicators when the water pump body is connected to the valve body. After the water pump inlet 60 and the valve outlet 70 are adjusted to be parallel in their axes, the pin 40 can be engaged to achieve the positioning of the water pump body and the valve body.

[0063] In the embodiment, when adjusting the directions of the water pump inlet 60 and the valve outlet 70, the axial directions of the water pump inlet 60 and the valve outlet 70 can be adjusted to be parallel. At the same time, the opening directions of the water pump inlet 60 and the valve outlet 70 can also be adjusted; for example, after the axial directions of the water pump inlet 60 and the valve outlet 70 are adjusted to be parallel, and the opening directions of the water pump inlet 60 and the valve outlet 70 are made the same, the pin 40 is inserted to fix the relative positions of the water pump body, the valve body and the locking nut 30.

[0064] In some embodiments of this application, see Figure 1 and Figure 2 The connection structure also includes an O-shaped sealing ring 50 that surrounds the middle of the two-stage external thread. This arrangement of the sealing ring 50 in the middle of the two-stage external thread enhances the sealing between the water pump inlet 60 and the valve outlet 70, thereby reducing water leakage after the connection between the water pump inlet 60 and the valve outlet 70.

[0065] In some embodiments of this application, see Figure 4 、 Figure 5 and Figure 6The two-stage external thread also includes a transition section 23, the two axial ends of which are connected to the first external thread 21 and the second external thread 22, respectively. The sealing ring 50 is sleeved on the transition section 23. The radial dimension of the first external thread 21 is smaller than that of the second external thread 22, and the pitch of the first external thread 21 is smaller than that of the second external thread 22. The provision of the transition section 23 facilitates the installation of the sealing ring 50, avoids the problem of the sealing ring 50 being easily damaged by being stuck on the thread structure, and improves the stability and durability of the connection structure after installation.

[0066] Specifically, the sealing ring 50 is an O-ring.

[0067] In some embodiments, the present solution also provides a water supply system, including a connection structure for a water pump.

[0068] Specifically, see Figure 1 、 Figure 2 and Figure 6 During installation, since the first external thread 21 and the second external thread 22 are both provided on the valve connection port 20, and the second connection hole and the connecting lug 12 are provided on the water pump connection port 10, the lock nut 30 is first sleeved on the second external thread 22, and the sealing ring 50 is sleeved on the transition section 23, and then the first external thread 21 is screwed into the first internal thread 11. Then, the opening direction and axial parallelism of the water pump inlet 60 and the valve outlet 70 are adjusted so that the opening directions of the water pump inlet 60 and the valve outlet 70 are the same and the axial directions of the two are parallel, and the first connection hole 31 is coaxial with the second connection hole on the connecting lug 12, and then the pin 40 is installed to complete the installation of the water pump connection structure.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0070] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0071] In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium.

[0072] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

Claims

1. A water pump connection structure for connecting a water pump body and a valve body, wherein the water pump body includes a water pump connection port (10), and the valve body includes the valve connection port (20), characterized in that: The connection structure comprises a valve connection port (20), a water pump connection port (10), a locking nut (30) and a pin (40): Among the valve connection port (20) and the water pump connection port (10), one includes a double-stage external thread, and the other includes a first internal thread (11); The two-stage external thread comprises a first external thread (21) and a second external thread (22) having opposite thread rotation directions and coaxially arranged, and the first external thread (21) is located on the outside of the water pump body; the first internal thread (11) is connected to the first external thread (21), and the locking nut (30) is connected to the second external thread; the pin (40) is used to connect the locking nut (30) and the body component having the first internal thread (11).

2. The water pump connection structure according to claim 1, characterized in that: The valve connection port (20) includes the two-stage external thread, and the water pump connection port (10) includes the first internal thread (11); The valve connection port (20) is located above the water pump connection port (10), and the pin (40) is used to connect the locking nut (30) and the water pump body.

3. The water pump connection structure according to claim 2, characterized in that: The locking nut (30) comprises: a first connecting portion, the first connecting portion being used to connect one end of the pin (40); The water pump connection port (10) further comprises: Connecting lugs (12), the connecting lugs (12) having at least two and extending outward in a radial direction of the water pump connecting port (10); A second connecting hole is provided on the connecting lug (12) and is used to connect the other end of the pin (40).

4. The water pump connection structure according to claim 3, characterized in that: The pin (40) comprises: A connecting end (41), wherein the connecting end (41) is columnar; A clamping end (42), wherein the clamping end (42) is T-shaped, and a vertical section of the T-shape is perpendicular to and connected to the connecting end (41); The first connecting portion is also T-shaped, and the clamping end (42) extends into the first connecting portion.

5. The water pump connection structure according to claim 4, characterized in that: The first connecting portion is located above the locking nut (30), and the first connecting portion and the clamping end (42) are clearance-fitted.

6. The water pump connection structure according to claim 3, characterized in that: There are two connecting lugs (12), and the two connecting lugs (12) are symmetrically arranged on the outer wall of the water pump connection port (10), and each connecting lug (12) is provided with a second connecting hole.

7. The water pump connection structure according to claim 1, characterized in that: The water pump body also includes: a water pump inlet (60), wherein the axial direction of the water pump inlet (60) is perpendicular to the axial direction of the water pump connecting port (10); The valve body further comprises: a valve outlet (70), wherein the axial direction of the valve outlet (70) is perpendicular to the axial direction of the valve connecting port (20); The pin (40) is used for connection and positioning when the axial directions of the water pump inlet (60) and the valve outlet (70) are parallel.

8. The water pump connection structure according to claim 1, characterized in that: The connection structure further includes: A sealing ring (50) is O-shaped and surrounds the middle of the double-section external thread.

9. The water pump connection structure according to claim 8, characterized in that: The two-stage external thread also includes: A transition section (23), wherein two axial ends of the transition section (23) are respectively connected to the first external thread (21) and the second external thread (22), and the sealing ring (50) is sleeved on the transition section (23); The radial dimension of the first external thread (21) is smaller than the radial dimension of the second external thread (22), and the pitch of the first external thread (21) is smaller than the pitch of the second external thread (22).

10. A water supply system, characterized in that: The invention comprises a connection structure of a water pump as described in any one of claims 1 to 9.

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