A pump assembly

Abstract

The application discloses a pump assembly, which comprises a pump body and an external connecting pipe, an outlet pipe is formed on the pump body, an input end of the external connecting pipe is connected with the outlet pipe, and one end of the external connecting pipe is detachably connected with the outlet pipe in a sleeving mode; the pump assembly further comprises a check valve, the check valve comprises a valve body, a first end of the valve body is inserted into the outlet pipe, a second end of the valve body is inserted into the external connecting pipe, an outer wall of the valve body is sealed with an inner wall of the outlet pipe, and the check valve allows one-way flow of fluid from the outlet pipe to the external connecting pipe; a first limiting part opposite to the first end of the valve body is arranged in the outlet pipe, and a second limiting part opposite to the second end of the valve body is arranged in the external connecting pipe; and the valve body is limited between the first limiting part and the second limiting part in an axial direction when the external connecting pipe and the outlet pipe are connected. The application has the advantages of convenient assembly and convenient maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of pumps, and in particular to a pump assembly that is easy to repair. Background Art

[0002] A water pump is a machine used to transport liquids or increase the pressure of liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the liquid's energy. It is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals.

[0003] During use, the water pump generally needs to cooperate with external pipe fittings and valve bodies to guide the liquid to the required location. When a water pump in the related art fails during use, it is inconvenient to repair it, which in turn affects work efficiency. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art to a certain extent. To this end, the present invention provides a pump assembly with the advantages of being easy to assemble and easy to repair.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a pump assembly, including a pump body and an external pipe, the pump body includes an outlet pipe, the input end of the external pipe is connected to the output end of the outlet pipe,

[0006] The external pipe is detachably connected to the outlet pipe;

[0007] The pump assembly further includes a check valve, the check valve including a valve body, a first end of the valve body being inserted into the outlet pipe, a second end of the valve body being inserted into the external pipe, an outer wall of the valve body forming a seal with an inner wall of the outlet pipe, and the check valve allowing one-way flow of fluid from the outlet pipe to the external pipe;

[0008] A first limiting portion opposite to the first end of the valve body is provided in the outlet pipe, and a second limiting portion opposite to the second end of the valve body is provided in the external pipe; when the external pipe and the outlet pipe are connected, the valve body is limited between the first limiting portion and the second limiting portion along the axial direction.

[0009] The external tube and the outlet tube in the present technical solution are detachably connected, and when in use, it is convenient to detach the external tube from the outlet tube, thereby facilitating the inspection and maintenance of the internal structure; the two ends of the check valve are respectively inserted into the outlet pipe and the external tube, and are axially limited and fixed by the first limiting part and the second limiting part, thereby realizing the detachable connection of the check valve, facilitating the disassembly and inspection of the internal check valve, and improving work efficiency and inspection efficiency.

[0010] Furthermore, when the external pipe is connected to the outlet pipe, the axial distance between the first limiting portion and the second limiting portion is greater than the axial length of the valve body.

[0011] Furthermore, a valve mounting hole is formed in the outlet pipe, and the valve mounting hole is located between the first limiting portion and the output end of the outlet pipe. The inner wall of the valve mounting hole is formed into a conical structure, and the inner diameter of the valve mounting hole near the output end of the outlet pipe is larger than the inner diameter near the first limiting portion.

[0012] Furthermore, the input end of the external pipe is sleeved on the outside of the outlet pipe, and a first connecting mechanism and a second connecting mechanism are provided between the external pipe and the outlet pipe;

[0013] The first connecting mechanism includes a first plug-in portion provided on the external tube, a second plug-in portion provided on the outlet tube, and a connecting piece, wherein the first plug-in portion and the second plug-in portion are arranged opposite to each other, and the connecting piece is plugged and connected to the first plug-in portion and the second plug-in portion respectively, and the plugging direction intersects with the axis of the outlet tube to limit the relative axial movement of the external tube and the outlet tube;

[0014] The second connecting mechanism includes a third plug-in portion provided on the external tube and a fourth plug-in portion provided on the outlet pipe. The third plug-in portion and the fourth plug-in portion are opposite to each other and plug-connected along the axial direction of the outlet pipe to locate the relative positions of the external tube and the outlet pipe in the circumferential direction.

[0015] Furthermore, the first plug-in portion includes two plug-in grooves located on opposite sides of the outer wall of the outlet pipe, and the plug-in grooves are arranged along the tangential direction. The second plug-in portion includes two plug-in holes arranged on opposite sides of the outer wall of the external pipe, and the plug-in holes are arranged along the tangential direction. The two plug-in holes and the two plug-in grooves correspond one to one. The connecting part includes a connecting portion and two plug-in portions arranged at intervals. The two plug-in portions are respectively inserted into the corresponding plug-in holes and plug-in grooves on both sides, and the two plug-in portions are fixedly connected through the connecting portion.

[0016] Furthermore, the external pipe includes a connecting pipe body and a positioning piece, the input end of the connecting pipe body is sleeved on the outside of the outlet pipe, the positioning piece includes a supporting portion and a clamping portion, the supporting portion protrudes from the outer wall of the connecting pipe body, the clamping portion is arranged on the supporting portion and is located in the middle position of the two plug-in slots, the clamping portion forms a set interval with the outer wall of the connecting pipe body, and when the connecting piece is inserted into the first plug-in portion and the second plug-in portion, the connecting piece is clamped into the set interval to limit the connecting piece from being separated from the first plug-in portion and the second plug-in portion in the absence of external force.

[0017] Furthermore, the third plug-in portion includes two axial slots arranged on opposite sides of the end of the external tube, and the fourth plug-in portion includes two axial plug-in blocks arranged on opposite sides of the outer wall of the outlet pipe. The two axial slots and the two axial plug-in blocks are arranged in a one-to-one correspondence along the axial direction and are respectively plugged in and connected.

[0018] Furthermore, a first positioning platform is formed on the inner wall of the external pipe and is opposite to the end of the outlet pipe, and a second positioning platform is formed on the outer wall of the outlet pipe and is opposite to the end of the external pipe.

[0019] Furthermore, the external pipe includes a connecting pipe body, a plug and multiple water outlet pipes. The input end of the connecting pipe body is sleeve-connected to the outlet pipe. The multiple water outlet pipes are arranged at the output end of the connecting pipe body and are respectively connected to the connecting pipe body. The multiple water outlet pipes extend in different directions around the connecting pipe body and are respectively formed with water outlets. The plug is used to selectively seal the water outlets.

[0020] Furthermore, the pump assembly also includes a first seal and a second seal. A sealing groove is formed on the outer wall of the valve body. The first seal is arranged in the sealing groove and abuts against the inner wall of the outlet pipe. The second seal is arranged between the inner wall and the outer wall of the portion where the outlet pipe and the external pipe are connected.

[0021] These features and advantages of the present invention will be further disclosed in the following detailed description and accompanying drawings. The preferred embodiments and methods of the present invention will be fully illustrated in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of the present invention. Furthermore, although multiple features, elements, and components may be present in each of the following text and accompanying drawings, and are labeled with different symbols or numbers for convenience, they all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings:

[0023] Figure 1 A front cross-sectional view of a pump assembly according to one embodiment of the present invention;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 A rear view of a pump assembly according to one embodiment of the present invention;

[0026] Figure 4 A top cross-sectional view of one embodiment of the present invention;

[0027] Figure 5 This is a structural diagram of a pump body according to one embodiment of the present invention;

[0028] Figure 6 This is a structural diagram of an external pipe according to one embodiment of the present invention;

[0029] Figure 7 This is a structural diagram of an external pipe according to one embodiment of the present invention;

[0030] Figure 8 This is a structural diagram of an external pipe and a connector assembly according to one embodiment of the present invention;

[0031] Figure 9 This is a structural diagram of a connector according to one embodiment of the present invention.

[0032] in,

[0033] 10. Pump body; 11. Outlet pipe; 111. First limiting portion; 112. Insertion groove; 113. Axial insert; 114. Second positioning platform; 115. Reinforcement structure; 12. Pump casing;

[0034] 20. External tube; 21. Connecting tube body; 211. Second limiting portion; 212. Insertion hole; 213. Axial slot; 214. First positioning platform;

[0035] 22. Water outlet pipe; 23. Plug; 24. Positioning member; 241. Support portion; 242. Pressing portion; 2421. Guide slope;

[0036] 30. Check valve; 31. Valve body; 311. Sealing groove; 32. Valve core;

[0037] 40. Connecting piece; 41. Insertion portion; 42. Connecting portion;

[0038] 51. Second sealing member; 52. First sealing member. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described in the embodiments are intended to explain the present invention and are not to be construed as limiting the present invention.

[0040] References in this specification to "one embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment disclosed herein. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0041] When using a pump in the related art, the check valve at the water outlet is typically installed inside a pipe fitting using an interference fit, and the pipe fitting is typically welded to the pump body. In actual use, the outlet (check valve) is a prone point of clogging. The check valve in the related art is difficult to disassemble, making it difficult to promptly inspect and repair the clogged area. This results in reduced water delivery efficiency and, in severe cases, even shortens the pump's service life.

[0042] See attached Figure 1 、 2 One embodiment of the present invention discloses a pump assembly, including a pump body 10 and an external pipe 20, wherein the pump body 10 includes an outlet pipe 11, and the input end of the external pipe 20 is connected to the outlet pipe 11.

[0043] One end of the external pipe 20 is detachably connected to the outlet pipe 11;

[0044] The pump assembly further includes a check valve 30, which includes a valve body 31 and a valve core 32. The valve core 32 is disposed within the valve body 31. A first end of the valve body 31 is inserted into the outlet pipe 11, and a second end is inserted into the external pipe 20. The outer wall of the valve body 31 forms a seal with the inner wall of the outlet pipe 11. The check valve 30 allows one-way flow of fluid from the outlet pipe 11 to the external pipe 20.

[0045] A first limiting portion 111 opposite to the first end of the valve body 31 is provided in the outlet pipe 11, and a second limiting portion 211 opposite to the second end of the valve body 31 is provided in the external pipe 20; when the external pipe 20 and the outlet pipe 11 are connected, the valve body 31 is limited between the first limiting portion 111 and the second limiting portion 211 along the axial direction.

[0046] The pump body 10 in this embodiment is provided with an outlet pipe 11. When in use, an outlet is formed on the outlet pipe 11 for discharging the pumped liquid. The arrangement of the outlet pipe 11 facilitates the connection between the pump body 10 and the external pipe 20.

[0047] The pump body 10 of this embodiment further includes a pump casing 12 , in which components such as an impeller are disposed. The water outlet pipe 22 is disposed on the pump casing 12 and communicates with the inner cavity of the pump casing 12 .

[0048] In this embodiment, the external tube 20 and the outlet tube 11 may be connected by one or more structures including plug-in connection, clip-on connection and threaded connection, as long as the external tube 20 and the outlet tube 11 can be easily disassembled.

[0049] In this embodiment, the external tube 20 and the outlet tube 11 are connected by sleeve connection, wherein the outlet tube 11 can be sleeved outside the external tube 20, and the external tube 20 can also be sleeved outside the outlet tube 11. Compared with the structure in which the ends of the external tube 20 and the outlet tube 11 are butt-jointed, the coaxiality of the external tube 20 and the outlet tube 11 can be ensured, and the overall strength of the connection between the external tube 20 and the outlet tube 11 can also be improved.

[0050] The pump assembly in this embodiment includes a check valve 30 , which is used to prevent the liquid pumped out from flowing only to the outside of the pump body 10 and not to flow back, thereby ensuring the safe operation of the pump body 10 .

[0051] As attached Figure 1 、 2 As shown, the first end of the valve body 31 of the check valve 30 in this embodiment is inserted into the outlet pipe 11, and the second end is inserted into the external pipe 20. During installation, the first end of the check valve 30 is first inserted into the outlet pipe 11 (pump body 10). In this embodiment, a gap is formed between the outer wall of the valve body 31 and the inner wall of the outlet pipe 11 (the outer diameter of the valve body 31 is slightly smaller than the inner diameter of the outlet pipe 11), which facilitates the insertion of the valve body 31 into the outlet pipe 11, and the outlet pipe 11 can also effectively limit the check valve 30 in the radial direction.

[0052] In this embodiment, the outer wall of the valve body 31 forms a seal with the inner wall of the outlet pipe 11. It should be noted that a radial seal is formed between the outlet pipe 11 and the valve body 31 of the check valve 30. In actual configuration, a first sealing member 52 can be provided between the inner wall of the outlet pipe 11 and the outer wall of the valve body 31. Specifically, a sealing groove 311 can be provided on the outer wall of the valve body 31. The first sealing member 52 is embedded in the sealing groove 311, and a portion of the first sealing member 52 protrudes from the outer wall of the valve body 31. During the process of inserting the valve body 31 into the outlet pipe 11, the first sealing member 52 is squeezed by the valve body 31 and the outlet pipe 11 to form a seal. The squeezed first sealing member 52 also serves to assist in fixing the check valve 30, allowing the check valve 30 to be fixed in the outlet pipe 11 without being subjected to external forces. However, it should be noted that the check valve 30 can move axially when subjected to external force, and one end of the check valve 30 is exposed outside the outlet pipe 11. The staff can pull the check valve 30 out of the outlet pipe 11 through the end exposed outside the outlet pipe 11, which is convenient for operation.

[0053] As described above, after the check valve 30 is pre-fixed in the outlet pipe 11, the external tube 20 is docked with the outlet pipe 11. Specifically, the input end of the external tube 20 is opposite to the outlet pipe 11. First, the part of the check valve 30 exposed in the outlet pipe 11 is inserted into the external tube 20, and then the external tube 20 is moved along the axial direction of the outlet pipe 11, and finally connected to the outlet pipe 11 by sleeve connection. The external tube 20 in this embodiment can be set to a structure that is sleeved on the outside of the outlet pipe 11, so that the inner diameter of the input end of the external tube 20 is relatively large, that is, there is a larger gap between the valve body 31 of the check valve 30 and the inner wall of the external tube 20 (compared with the gap between the check valve 30 and the outlet pipe 11). During assembly, the risk of collision between the external tube 20 and the check valve 30 can be reduced.

[0054] Since the check valve 30 will be impacted by the water flow during actual use, the position of the check valve 30 is generally required to be fixed. In this embodiment, a first limiting portion 111 is provided in the outlet pipe 11 and a second limiting portion 211 is provided in the external pipe 20. After the outlet pipe 11 and the external pipe 20 are connected, the axial ends of the check valve 30 are respectively limited by the first limiting portion 111 and the second limiting portion 211. That is, even if the check valve 30 is constrained between the first limiting portion 111 and the second limiting portion 211 in the axial direction, combined with the fixation in the radial direction, the check valve 30 can be stably installed in the outlet pipe 11 and the external pipe 20.

[0055] In this embodiment, a detachable connection between the external pipe 20 and the outlet pipe 11, as well as a detachable connection structure of the check valve 30 are provided. During use, when a fault occurs, the external pipe 20 and the check valve 30 can be quickly detached from the pump body 10, thereby improving maintenance efficiency.

[0056] As one of the embodiments of the present invention, see the attached Figure 2 When the external pipe 20 is connected to the outlet pipe 11 , the axial distance between the first limiting portion 111 and the second limiting portion 211 is greater than the axial length of the valve body 31 .

[0057] When assembling the check valve 30 in this embodiment, the check valve 30 is generally first inserted into the outlet pipe 11, and the first end of the valve body 31 of the check valve 30 is abutted against the first limit portion 111. In this way, after the outlet pipe 11 is connected to the external pipe 20, a gap is generally formed between the second end of the check valve 30 and the second limit portion 211. This can avoid top pressure on the valve body 31 in the axial direction, so that the valve body 31 has a certain movable margin in the axial direction, avoiding damage that may be caused by long-term top pressure and the problem of inconvenient disassembly.

[0058] It should be noted that, in the case where the external pipe 20 and the outlet pipe 11 are connected as mentioned in this embodiment, the axial spacing between the first limiting portion 111 and the second limiting portion 211 is generally greater than the axial length of the valve body 31, and the distance H is 0.05 mm to 0.1 mm.

[0059] As one of the embodiments of the present invention, see the attached Figure 2 The first limiting portion 111 protrudes from the inner wall of the outlet pipe 11 and forms an annular structure; the second limiting portion 211 protrudes from the inner wall of the external pipe 20 and forms an annular structure.

[0060] In this embodiment, the first limiting portion 111 and the second limiting portion 211 are both formed into an annular structure. In this way, during use, the first limiting portion 111 and the second limiting portion 211 can limit the check valve 30 in the circumferential direction, making the installation of the check valve 30 more stable and avoiding distortion of the check valve 30.

[0061] As one of the embodiments of the present invention, see the attached Figure 2 A valve mounting hole is formed in the outlet pipe 11, and the valve mounting hole is located between the first limiting portion 111 and the output end of the outlet pipe 11. The inner wall of the valve mounting hole is formed into a conical structure, and the inner diameter of the valve mounting hole near the output end of the outlet pipe 11 is larger than the inner diameter of the end near the first limiting portion 111.

[0062] The valve mounting hole in this embodiment is set to a conical structure. In actual setting, the mounting port diameter of the valve mounting hole is relatively large, which facilitates the insertion of the check valve 30 and improves the assembly efficiency of the check valve 30. In addition, the conical structure of the valve mounting hole can also help to seal between the check valve 30 and the inner wall of the outlet pipe 11. Through the different diameters of different parts of the valve mounting hole, the compression amount of the first sealing member 52 can be guaranteed, thereby achieving a good sealing effect.

[0063] Moreover, the design of the conical structure also facilitates the removal of the check valve 30 from the outlet pipe 11. During removal, the staff only needs to pull the check valve 30 with force to separate the first sealing member 52 from the compressed portion. After that, the check valve 30 can be removed without resistance. Furthermore, during removal, the check valve 30 itself will not be damaged, and the removal is more convenient. In actual use, generally, only the first sealing member 52 (a wearing part) needs to be replaced.

[0064] It is also conceivable that the distance H mentioned above in the present invention is generally to ensure that the check valve 30 moves within this range, so that the first sealing member 52 is in a compressed and sealed state.

[0065] As one of the embodiments of the present invention, see the attached Figure 1 、 3The input end of the external pipe 20 is sleeved on the outside of the outlet pipe 11, and a first connecting mechanism and a second connecting mechanism are provided between the external pipe 20 and the outlet pipe 11;

[0066] The first connecting mechanism includes a first plug-in portion provided on the external tube 20, a second plug-in portion provided on the outlet tube 11, and a connecting member 40. The first plug-in portion and the second plug-in portion are arranged opposite to each other. The connecting member 40 is plugged and connected to the first plug-in portion and the second plug-in portion respectively, and the plugging direction intersects the axis of the outlet tube 11 to limit the relative axial movement of the external tube 20 and the outlet tube 11.

[0067] The second connecting mechanism includes a third plug-in portion provided on the external tube 20 and a fourth plug-in portion provided on the outlet pipe 11. The third plug-in portion and the fourth plug-in portion are opposite to each other and plug-connected along the axial direction of the outlet pipe 11 to position the relative positions of the external tube 20 and the outlet pipe 11 in the circumferential direction.

[0068] This embodiment provides a mechanism for detachably connecting the external tube 20 and the outlet tube 11 , wherein the detachably connected structure in this embodiment is designed when the external tube 20 is sleeved on the outside of the outlet tube 11 .

[0069] In this embodiment, a first connecting mechanism is provided between the external tube 20 and the outlet tube 11, wherein the first connecting mechanism includes a first plug-in portion, a second plug-in portion and a connector 40, wherein the connector 40 is plug-connected to the first plug-in portion and the second plug-in portion at the same time, which is equivalent to the connector 40 connecting the outlet tube 11 and the external tube 20 through the first plug-in portion and the second plug-in portion, and the plug-in direction of the connector 40 (and the first plug-in portion and the second plug-in portion) intersects with the axis of the outlet tube 11, so that after being plug-connected, the connector 40 can prevent the outlet tube 11 and the external tube 20 from moving relative to each other in the axial direction, thereby realizing the relative fixation of the outlet tube 11 and the external tube 20 in the axial direction.

[0070] In addition, a second connecting mechanism is provided between the external tube 20 and the outlet tube 11 in this embodiment, wherein the second connecting mechanism includes a third plug-in portion and a fourth plug-in portion which are opposite to and plug-in connected along the axial direction of the outlet tube 11, and the plug-in direction of the third plug-in portion and the fourth plug-in portion is along the axial direction. In this way, after being plugged in and connected, the connecting member 40 can prevent the outlet tube 11 and the external tube 20 from rotating relative to each other in the circumferential direction, thereby realizing the relative fixation of the circumferential positions of the outlet tube 11 and the external tube 20.

[0071] In addition, it should be noted that the second connection structure in this embodiment can also play a role in positioning the external tube 20 and the outlet tube 11. Since the third plug-in portion and the fourth plug-in portion are axially opposite to each other, when the external tube 20 is installed on the outlet tube 11, it is only necessary to ensure that the positions of the third plug-in portion and the fourth plug-in portion are relative to each other, so that the first plug-in portion and the second plug-in portion can be in relative positions, which facilitates the rapid assembly and disassembly of the two.

[0072] This embodiment, through the provision of the first and second connecting mechanisms, achieves both axial and circumferential positioning of the external tube 20 and the outlet tube 11 after docking, completely securing the external tube 20 and the outlet tube 11 and ensuring stability during use. Furthermore, the first and second connecting mechanisms in this embodiment are both plug-and-play structures, making assembly and disassembly relatively easy during use.

[0073] As one of the embodiments of the present invention, see the attached Figures 5 to 8 The first plug-in portion includes two plug-in grooves 112 located on opposite sides of the outer wall of the outlet pipe 11, and the plug-in grooves 112 are arranged tangentially. The second plug-in portion includes two plug-in holes 212 arranged on opposite sides of the outer wall of the external pipe 20, and the plug-in holes 212 are arranged tangentially. The two plug-in holes 212 correspond one-to-one to the two plug-in grooves 112. The connecting member 40 includes a connecting portion 42 and two spaced-apart plug-in portions 41. The two plug-in portions 41 are respectively inserted into the corresponding plug-in holes 212 and plug-in grooves 112 on both sides, and the two plug-in portions 41 are fixedly connected through the connecting portion 42.

[0074] The two insertion slots 112 and two insertion holes 212 of this embodiment (symmetrically positioned on opposite sides of the pipe fitting) improve assembly efficiency during installation, avoiding the need to control the docking direction when installing on one side. Furthermore, the dual-side plug-in connection structure further improves the reliability and stability of the connection between the outlet pipe 11 and the external pipe 20.

[0075] In actual setting, the opening direction of the plug groove 112 and the plug hole 212 is along the tangential direction of the pipe, and the connecting member 40 is set as shown in the attached Figure 9 The "U" shape shown in the figure, such a structure with symmetrical design on both sides can not only limit the axial relative position of the outlet pipe 11 and the external tube 20, but also fix the circumferential relative position of the outlet pipe 11 and the external tube 20 through the mutual cooperation of the plug-in structures on both sides, that is, the axial and circumferential positions of the outlet pipe 11 and the external tube 20 can be fixed only by the first connecting mechanism, and the stability of the connection between the two can be further improved by cooperating with the setting of the second connecting mechanism.

[0076] The plug-in slot 112 in this embodiment is designed to pass through the side wall of the external tube 20, while the plug-in slot 112 does not pass through the side wall of the outlet pipe 11. When the connector 40 is plugged into the plug-in slot 112 and the plug-in hole 212 at the same time, the insertion portion 41 of the connector 40 passes through the insertion hole into the external tube 20 and is inserted into the plug-in slot 112.

[0077] When the outlet pipe 11 and the external pipe 20 need to be disassembled, it is only necessary to pull out the connecting piece 40 so that it is disengaged from the insertion groove 112 and the insertion hole 212 at the same time. In this way, the outlet pipe 11 and the external pipe 20 can produce axial relative movement, and then the external pipe 20 can be axially separated from the outlet pipe 11, thereby realizing the mutual separation of the outlet pipe 11 and the external pipe 20.

[0078] When actually setting the plug-in groove 112 on the outlet pipe 11 in this embodiment, a circumferentially protruding reinforcement structure 115 can be first formed on the outer wall of the outlet pipe 11, and then the plug-in groove 112 can be set on the reinforcement structure 115. This not only facilitates the processing of the plug-in groove 112, but also improves the overall strength of the outlet pipe 11.

[0079] As one of the embodiments of the present invention, see the attached Figures 6 to 8 The external pipe 20 includes a connecting pipe body 21 and a positioning member 24. The input end of the connecting pipe body 21 is sleeved on the outside of the outlet pipe 11. The positioning member 24 includes a supporting portion 241 and a pressing portion 242. The supporting portion 241 protrudes from the outer wall of the connecting pipe body 21. The pressing portion 242 is arranged on the supporting portion 241 and is located in the middle position of the two plug-in slots 112. The pressing portion 242 forms a set interval with the outer wall of the connecting pipe body 21. When the connecting member 40 is inserted into the first plug-in portion and the second plug-in portion, the connecting portion 42 is stuck in the set interval to limit the connecting member 40 from being separated from the first plug-in portion and the second plug-in portion in the absence of external force.

[0080] In this embodiment, a positioning member 24 is provided on the outer wall of the connecting tube body 21. During use, when the connecting member 40 is inserted into the first plug-in portion and the second plug-in portion, the positioning member 24 is clamped by the gap between the pressing portion 242 and the outer wall of the connecting tube body 21, so that the connecting member 40 will not automatically release the plug-in state with the first plug-in portion and the second plug-in portion. In actual use, the connecting member 40 itself or at least one of the pressing portion 242 can be configured as an elastic structure. In this way, when plugged in, the connecting portion 42 of the connecting member 40 can be clamped into the set gap through the elastic deformation of the elastic structure (the connecting portion 42 is clamped and fixed by the pressing portion 242 and the outer wall of the external tube 20. Regardless of the orientation of the external tube 20 in actual use, the connecting member 40 will not automatically release the plug-in state). When it is necessary to detach the external tube 20, the elastic structure can be elastically deformed by external force, so that the connecting member 40 can be pulled out from the set gap.

[0081] In this embodiment, the surface of the connecting portion 42 that abuts against the external tube 20 can be set to an arcuate surface that matches the outer circular surface of the external tube 20. In this way, when the connecting member 40 is stuck in the set interval, an arcuate contact fit is formed between the connecting portion 42 and the external tube 20, thereby improving the stability of the connecting member 40.

[0082] When the clamping portion 242 in this embodiment is actually set, a guide slope 2421 can be set on the side away from the external tube 20 along the insertion direction of the connecting member 40. During the insertion process of the connecting member 40, the guiding slope 2421 will cause the positioning member 24 or the connecting member 40 to produce a certain elastic deformation, thereby preventing the connecting member 40 from being blocked and causing the problem of being unable to be inserted.

[0083] As one of the embodiments of the present invention, see the attached Figure 5 The third plug-in portion includes two axial slots 213 arranged on opposite sides of the end of the external tube 20, and the fourth plug-in portion includes two axial plug blocks 113 arranged on opposite sides of the outer wall of the outlet pipe 11. The two axial slots 213 and the two axial plug blocks 113 are arranged in a one-to-one correspondence along the axial direction and are respectively plugged in and connected.

[0084] In this embodiment, two axial slots 213 and two axial inserts 113 are symmetrically provided. This can avoid the problem of unilateral orientation required when the external tube 20 and the outlet tube 11 are docked during actual use, thereby improving assembly efficiency.

[0085] See attached Figure 3 In this embodiment, when the axial slot 213 and the axial insert block 113 are plugged into each other, a circumferential limit is formed between the outlet pipe 11 and the external pipe 20, so that the outlet pipe 11 and the external pipe 20 cannot generate circumferential relative movement.

[0086] It should be noted that, in this embodiment, the axial plug block 113 and the plug groove 112 on the outlet pipe 11 are arranged in the same direction on the outlet pipe 11, and the axial slot 213 and the plug hole 212 on the external pipe 20 are arranged in the same direction. In this way, during installation, as long as the staff makes the axial slot 213 and the axial plug block 113 correspond when docking the external pipe 20 and the outlet pipe 11, the plug hole 212 and the plug groove 112 located on the same side can be aligned with each other, thereby achieving rapid and correct docking of the external pipe 20 and the outlet pipe 11, thereby improving assembly efficiency.

[0087] As one of the embodiments of the present invention, see the attached Figure 2 、 5 The inner wall of the external tube 20 is formed with a first positioning platform 214 opposite to the end of the outlet tube 11 , and the outer wall of the outlet tube 11 is formed with a second positioning platform 114 opposite to the end of the external tube 20 .

[0088] The first positioning platform 214 in this embodiment and the inner wall protruding from the external tube 20 can position the end of the outlet tube 11 from the inside during the process of sleeve connection between the external tube 20 and the outlet tube 11, thereby ensuring the axial docking length of the external tube 20 and the outlet tube 11. The first positioning platform 214 can also improve the tube body strength of the input end of the external tube 20.

[0089] The second positioning platform 114 in this embodiment has a similar function to the first positioning platform 214. The second positioning platform 114 is arranged on the outer wall of the outlet pipe 11, and can position the end of the external tube 20 from the outside. In actual setting, the second positioning platform 114 can be connected to the axial plug block 113 as a whole, so that a circumferential and axial protrusion structure can be formed on the outer wall of the outlet pipe 11, greatly improving the overall strength of the outlet pipe 11.

[0090] As one of the embodiments of the present invention, see the attached Figure 1 、 6 , 7, 8, the external pipe 20 includes a connecting pipe body 21, a plug 23 and a plurality of water outlet pipes 22, the input end of the connecting pipe body 21 is sleeve-connected to the outlet pipe 11, and the plurality of water outlet pipes 22 are arranged at the output end of the connecting pipe body 21 and are respectively connected to the connecting pipe body 21, and the plurality of water outlet pipes 22 extend to different circumferential directions of the connecting pipe body 21 and are respectively formed with water outlets, and the plug 23 is used to selectively block the water outlets.

[0091] In this embodiment, a plurality of water outlet pipes 22 are formed at the output end of the external pipe 20 , and the plurality of water outlet pipes 22 are arranged in different directions. In actual use, the design of the plurality of water outlet pipes 22 can improve the flexibility of use.

[0092] Specifically, when the installation position of the pump is limited, for example, when the pump is installed, one of the water outlets is facing a position that is inconvenient to dock with the external pipe 20. If there is only one water outlet (the one at the inconvenient docking position), in order to ensure normal water discharge, it is necessary to adjust the installation status of the pump body 10, and then the installation environment may need to be improved, so the actual operation is more cumbersome.

[0093] This embodiment is designed with multiple water outlet pipes 22. When one of the water outlets is restricted, the outlet on the restricted water outlet pipe 22 can be blocked by a plug 23, and the water can be connected through the water outlet pipes 22 at other non-restricted positions, thereby avoiding the need to adjust the pump body 10 and improving work efficiency.

[0094] Of course, in some usage scenarios, if water needs to be supplied to different places, then multiple water outlet pipes 22 can be connected to pipes respectively to achieve water supply in different directions, thereby achieving multiple uses of one pump and improving the working efficiency of the pump.

[0095] It should be noted that the plug 23 in this embodiment is mainly used to block the water outlet of the water outlet pipe 22 in a non-working state, and can be connected to the water outlet pipe 22 through a threaded connection.

[0096] The number of the water outlet pipes 22 in this embodiment can be two, three or more according to actual needs.

[0097] As one of the embodiments of the present invention, see the attached Figure 1 、 2 The pump assembly also includes a first seal 52 and a second seal 51. A sealing groove 311 is formed on the outer wall of the valve body 31. The first seal 52 is arranged in the sealing groove 311 and abuts against the inner wall of the outlet pipe 11. The second seal 51 is arranged between the inner wall and the outer wall of the socket-connected portion of the outlet pipe 11 and the external pipe 20.

[0098] In this embodiment, a first seal 52 and a second seal 51 are respectively provided between the outlet pipe 11 and the stop valve, and between the external pipe 20 and the outlet pipe 11. In actual use, leakage of liquid from the docking portion between the outlet pipe 11 and the external pipe 20 can be avoided during use, thereby ensuring the sealing of the docking portion and the water pressure of the outlet water.

[0099] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A pump assembly comprising a pump body (10) and an external pipe (20), wherein the pump body (10) comprises an outlet pipe (11), an input end of the external pipe (20) is connected to an output end of the outlet pipe (11), and is characterized in that: The external pipe (20) is detachably connected to the outlet pipe (11); The pump assembly further comprises a check valve (30), the check valve (30) comprising a valve body (31), a first end of the valve body (31) being inserted into the outlet pipe (11), and a second end of the valve body (31) being inserted into the external pipe (20), an outer wall of the valve body (31) forming a seal with an inner wall of the outlet pipe (11), and the check valve (30) allowing a one-way flow of fluid from the outlet pipe (11) to the external pipe (20); A first limiting portion (111) is provided in the outlet pipe (11) and is opposite to the first end of the valve body (31), and a second limiting portion (211) is provided in the external pipe (20) and is opposite to the second end of the valve body (31); when the external pipe (20) and the outlet pipe (11) are connected, the valve body (31) is limited between the first limiting portion (111) and the second limiting portion (211) along the axial direction; when the external pipe (20) and the outlet pipe (11) are connected, the axial spacing between the first limiting portion (111) and the second limiting portion (211) is greater than the axial spacing between the valve body (31). Axial length; a valve mounting hole is formed in the outlet pipe (11), and the valve mounting hole is located between the first limiting portion (111) and the output end of the outlet pipe (11), the inner wall of the valve mounting hole is formed into a conical structure, and the inner diameter of the valve mounting hole close to the output end of the outlet pipe (11) is larger than the inner diameter of the end close to the first limiting portion (111), a gap is formed between the outer wall of the valve body (31), the inner wall of the external pipe (20) and the inner wall of the outlet pipe (11), and the gap between the outer wall of the valve body (31) and the inner wall of the external pipe (20) is larger than the gap between the outer wall of the valve body (31) and the inner wall of the outlet pipe (11).

2. The pump assembly according to claim 1, wherein The input end of the external pipe (20) is sleeved on the outside of the outlet pipe (11), and a first connecting mechanism and a second connecting mechanism are provided between the external pipe (20) and the outlet pipe (11); The first connecting mechanism comprises a first plug-in portion provided on the external pipe (20), a second plug-in portion provided on the outlet pipe (11), and a connecting piece (40), wherein the first plug-in portion and the second plug-in portion are arranged opposite to each other, and the connecting piece (40) is plug-connected to the first plug-in portion and the second plug-in portion respectively, and the plug-in direction intersects with the axis of the outlet pipe (11), so as to limit the relative axial movement of the external pipe (20) and the outlet pipe (11); The second connecting mechanism comprises a third plug-in portion provided on the external pipe (20) and a fourth plug-in portion provided on the outlet pipe (11); the third plug-in portion and the fourth plug-in portion are opposite to each other along the axial direction of the outlet pipe (11) and are plug-connected to each other so as to locate the relative positions of the external pipe (20) and the outlet pipe (11) in the circumferential direction.

3. The pump assembly according to claim 2, characterized in that The first plug-in portion comprises two plug-in slots (112) located on opposite sides of the outer wall of the outlet pipe (11), and the plug-in slots (112) are arranged along a tangential direction. The second plug-in portion comprises two plug-in holes (212) arranged on opposite sides of the outer wall of the external pipe (20), and the plug-in holes (212) are arranged along a tangential direction. The two plug-in holes (212) and the two plug-in slots (112) correspond one to one. The connecting member (40) comprises a connecting portion (42) and two inserting portions (41) arranged at intervals. The two inserting portions (41) are respectively inserted into the corresponding inserting holes (212) and the inserting slots (112) on both sides, and the two inserting portions (41) are fixedly connected through the connecting portion (42).

4. The pump assembly according to claim 3, characterized in that The external pipe (20) comprises a connecting pipe body (21) and a positioning member (24). The input end of the connecting pipe body (21) is sleeved on the outside of the outlet pipe (11). The positioning member (24) comprises a supporting portion (241) and a pressing portion (242). The supporting portion (241) protrudes from the outer wall of the connecting pipe body (21). The pressing portion (242) is arranged on the supporting portion (241) and is located in the middle of the two plug-in slots (112). The pressing portion (242) forms a set interval with the outer wall of the connecting pipe body (21). When the connecting member (40) is inserted into the first plug-in portion and the second plug-in portion, the connecting member (42) is clamped into the set interval to limit the connecting member (40) from being separated from the first plug-in portion and the second plug-in portion in the absence of external force.

5. The pump assembly according to claim 2, wherein: The third plug-in portion comprises two axial slots (213) arranged on opposite sides of the end of the external pipe (20), and the fourth plug-in portion comprises two axial plug blocks (113) arranged on opposite sides of the outer wall of the outlet pipe (11), the two axial slots (213) and the two axial plug blocks (113) being arranged in a one-to-one correspondence along the axial direction and being plugged in and connected respectively.

6. The pump assembly according to any one of claims 1 to 5, characterized in that The inner wall of the external pipe (20) is formed with a first positioning platform (214) opposite to the end of the outlet pipe (11), and the outer wall of the outlet pipe (11) is formed with a second positioning platform (114) opposite to the end of the external pipe (20).

7. The pump assembly according to any one of claims 1 to 5, characterized in that The external pipe (20) comprises a connecting pipe body (21), a plug (23) and a plurality of water outlet pipes (22); the input end of the connecting pipe body (21) is sleeve-connected to the outlet pipe (11); the plurality of water outlet pipes (22) are arranged at the output end of the connecting pipe body (21) and are respectively connected to the connecting pipe body (21); the plurality of water outlet pipes (22) extend in different directions in the circumferential direction of the connecting pipe body (21) and are respectively formed with water outlets; the plug (23) is used to selectively block the water outlets.

8. The pump assembly according to any one of claims 1 to 5, characterized in that The pump assembly further comprises a first sealing member (52) and a second sealing member (51); a sealing groove (311) is formed on the outer wall of the valve body (31); the first sealing member (52) is arranged in the sealing groove (311) and abuts against the inner wall of the outlet pipe (11); and the second sealing member (51) is arranged between the inner wall and the outer wall of the portion where the outlet pipe (11) and the external pipe (20) are connected.

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