Pump assembly

Abstract

The invention discloses a pump assembly which comprises a pump body and an external pipe, an outlet pipe is formed on the pump body, the input end of the external pipe is connected with the outlet pipe, and one end of the external pipe is detachably connected with the outlet pipe in a sleeved mode; the pump assembly further comprises a check valve, the check valve comprises a valve body, the first end of the valve body is inserted into the outlet pipe, the second end of the valve body is inserted into the external pipe, the outer side wall of the valve body and the inner wall of the outlet pipe form sealing, and the check valve allows fluid to flow from the outlet pipe to the external pipe in a one-way mode. 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 pipe; and under the condition that the external pipe is connected with the outlet pipe, the valve body is limited between the first limiting part and the second limiting part in the axis direction. The device has the advantages of being convenient to assemble and overhaul.

Description

Technical Field

[0001] The present invention relates to the technical field of pumps, and particularly to a pump assembly that is convenient for maintenance. 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 energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspension emulsions, and liquid metals, etc.

[0003] During use, a water pump generally needs to cooperate with external pipe fittings and valve bodies, etc., to guide the liquid to the required position. In the related art, when a water pump fails during use, it is inconvenient to repair, which will affect the 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. For this purpose, the present invention provides a pump assembly, which has the advantages of convenient assembly and convenient maintenance.

[0005] To achieve the above object, the present invention adopts the following technical solution: A pump assembly includes a pump body and an external pipe. The pump body includes an outlet pipe, and the input end of the external pipe is connected to the output end of the outlet pipe. The external pipe is detachably sleeved and connected to the outlet pipe; The pump assembly further includes a check valve. The check valve includes a valve body. The first end of the valve body is inserted into the outlet pipe, and the second end is inserted into the external pipe. The outer side wall of the valve body forms a seal with the inner wall of the outlet pipe. The check valve allows the one-way flow of fluid from the outlet pipe to the external pipe. 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 axially limited between the first limiting portion and the second limiting portion.

[0006] In the present technical solution, the external pipe and the outlet pipe are detachably connected. During use, it is convenient to detach the external pipe from the outlet pipe, which is convenient for the maintenance of the internal structure. The two ends of the check valve are respectively inserted into the outlet pipe and the external pipe, and are axially limited and fixed by the first limiting portion and the second limiting portion, realizing the detachable connection of the check valve, which is convenient for disassembling and maintaining the internal check valve, improving the work efficiency and the maintenance efficiency.

[0007] Further, when the external pipe and the outlet pipe are connected, the axial distance between the first limiting portion and the second limiting portion is greater than the axial length of the valve body.

[0008] Further, 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 at the end close to the output end of the outlet pipe is larger than that at the end close to the first limiting portion.

[0009] Further, the input end of the external connecting pipe is sleeved on the outer side of the outlet pipe, and a first connecting mechanism and a second connecting mechanism are arranged between the external connecting pipe and the outlet pipe; The first connecting mechanism includes a first plugging portion arranged on the external connecting pipe, a second plugging portion arranged on the outlet pipe, and a connecting piece. The first plugging portion and the second plugging portion are arranged oppositely, and the connecting piece is respectively plugged and connected with the first plugging portion and the second plugging portion, and the plugging direction intersects with the axis of the outlet pipe to limit the relative axial movement of the external connecting pipe and the outlet pipe; The second connecting mechanism includes a third plugging portion arranged on the external connecting pipe and a fourth plugging portion arranged on the outlet pipe. The third plugging portion and the fourth plugging portion are opposite and plugged and connected along the axis direction of the outlet pipe to position the relative circumferential positions of the external connecting pipe and the outlet pipe.

[0010] Further, the first plugging portion includes two plugging grooves located on opposite sides of the outer wall of the outlet pipe, the plugging grooves are arranged tangentially, the second plugging portion includes two plugging holes arranged on opposite sides of the outer wall of the external connecting pipe, the plugging holes are arranged tangentially, the two plugging holes and the two plugging grooves correspond one by one, the connecting piece includes a connecting portion and two plugging portions arranged at intervals, the two plugging portions are respectively inserted into the corresponding plugging holes and plugging grooves on both sides, and the two plugging portions are fixedly connected through the connecting portion.

[0011] Further, the external connecting pipe includes a connecting pipe body and a positioning member. The input end of the connecting pipe body is sleeved on the outer side of the outlet pipe. The positioning member includes a supporting portion and a pressing portion. The supporting portion protrudes from the outer wall of the connecting pipe body. The pressing portion is arranged on the supporting portion and located at the middle position between the two plugging grooves. The pressing portion forms a set interval with the outer wall of the connecting pipe body. When the connecting piece is inserted into the first plugging portion and the second plugging portion, the connecting portion is clamped into the set interval to limit the connecting piece from disengaging from the first plugging portion and the second plugging portion without external force.

[0012] Further, the third plugging portion includes two axial plugging slots arranged on opposite sides of the end of the external connecting pipe, the fourth plugging portion includes two axial plugging blocks arranged on opposite sides of the outer wall of the outlet pipe, and the two axial plugging slots and the two axial plugging blocks are arranged in one-to-one correspondence along the axis and are respectively plugged and connected.

[0013] Furthermore, a first positioning platform opposite to the end of the outlet pipe is formed on the inner wall of the external connecting pipe, and a second positioning platform opposite to the end of the external connecting pipe is formed on the outer wall of the outlet pipe.

[0014] Furthermore, the external connecting pipe includes a connecting pipe body, a plug, and a plurality of water outlet pipes. The input end of the connecting pipe body is sleeved and connected to the outlet pipe. The plurality of water outlet pipes are arranged at the output end of the connecting pipe body and are respectively communicated with the connecting pipe body. The plurality of water outlet pipes extend in different directions in the circumferential direction of the connecting pipe body and respectively form water outlet ports. The plug is used to selectively block the water outlet ports.

[0015] Furthermore, the pump assembly further includes a first seal and a second seal. A seal groove is formed on the outer side wall of the valve body. The first seal is arranged in the seal groove and abuts against the inner wall of the outlet pipe. The second seal is arranged between the inner wall and the outer wall at the sleeved connection part of the outlet pipe and the external connecting pipe.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and the drawings. The best embodiments or means of the present invention will be shown in detail in combination with the drawings, but it is not a limitation to the technical solution of the present invention. In addition, these features, elements, and components appear in multiple in each of the following texts and drawings, and different symbols or numbers are marked for convenience of representation, but they all represent components with the same or similar structures or functions. Description of the Drawings

[0017] The present invention will be further described below with reference to the drawings: Figure 1 It is the front view sectional view of the pump assembly of one embodiment of the present invention; Figure 2 For Figure 1 The enlarged view at A in Figure 3 It is the rear view of the pump assembly of one embodiment of the present invention; Figure 4 It is the top view sectional view of one embodiment of the present invention; Figure 5 It is the pump body structure diagram of one embodiment of the present invention; Figure 6 It is the external connecting pipe structure diagram of one embodiment of the present invention; Figure 7 It is the external connecting pipe structure diagram of one embodiment of the present invention; Figure 8 It is the assembly structure diagram of the external connecting pipe and the connecting part of one embodiment of the present invention; Figure 9 It is the connecting part structure diagram of one embodiment of the present invention.

[0018] Among them, 10. Pump body; 11. Outlet pipe; 111. First limit part; 112. Insertion slot; 113. Axial insertion block; 114. Second positioning platform; 115. Reinforcement structure; 12. Pump housing; 20. Outer connecting pipe; 21. Connecting pipe body; 211. Second limit part; 212. Insertion hole; 213. Axial slot; 214. First positioning platform; 22. Outlet water pipe; 23. Plug; 24. Positioning part; 241. Support part; 242. Clamping part; 2421. Guide inclined surface; 30. Check valve; 31. Valve body; 311. Sealing groove; 32. Valve core; 40. Connecting part; 41. Insertion part; 42. Connecting part; 51. Second seal; 52. First seal. Specific embodiments

[0019] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. Based on the embodiments in the embodiments, it is intended to explain the present invention and should not be construed as a limitation of the present invention.

[0020] As used herein, the phrase "one embodiment" or "example" or "instance" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the present disclosure. The appearances of the phrase "in one embodiment" in various places in the specification do not necessarily refer to the same embodiment.

[0021] When the pump in the related art is in use, the check valve at the water outlet part is generally installed inside the pipe fitting in an interference fit manner, and the pipe fitting is generally welded to the pump body. During actual use, the outlet part (where the check valve is located) is a fault point prone to blockage. The check valve in the related art is not convenient to disassemble, so the blocked part cannot be repaired in time, resulting in a decrease in water outlet efficiency, and even seriously affecting the service life.

[0022] See attached Figure 1 、 2 In one embodiment of the present invention, a pump assembly is disclosed, including a pump body 10 and an outer connecting pipe 20. The pump body 10 includes an outlet pipe 11, and the input end of the outer connecting pipe 20 is connected to the outlet pipe 11. One end of the outer connecting pipe 20 is detachably sleeved and connected to the outlet pipe 11; 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 arranged inside the valve body 31. The first end of the valve body 31 is inserted into the outlet pipe 11, and the second end is inserted into the external connection pipe 20. A seal is formed between the outer side wall of the valve body 31 and the inner wall of the outlet pipe 11. The check valve 30 allows the one-way flow of fluid from the outlet pipe 11 to the external connection pipe 20; A first limiting portion 111 opposite to the first end of the valve body 31 is arranged inside the outlet pipe 11, and a second limiting portion 211 opposite to the second end of the valve body 31 is arranged inside the external connection pipe 20; when the external connection pipe 20 and the outlet pipe 11 are connected, the valve body 31 is axially limited between the first limiting portion 111 and the second limiting portion 211.

[0023] In this embodiment, the pump body 10 is provided with an outlet pipe 11. During use, an outlet is formed on the outlet pipe 11 for discharging the pumped liquid. The arrangement of the outlet pipe 11 facilitates the docking of the pump body 10 with the external connection pipe 20.

[0024] The pump body 10 of this embodiment further includes a pump housing 12. Components such as an impeller are arranged inside the pump housing 12. A water outlet pipe 22 is arranged on the pump housing 12 and is communicated with the inner cavity of the pump housing 12.

[0025] In this embodiment, the external connection pipe 20 and the outlet pipe 11 can adopt one or more structures of plug connection, snap connection, and threaded connection, as long as the detachable connection between the external connection pipe 20 and the outlet pipe 11 is convenient.

[0026] In this embodiment, the external connection pipe 20 and the outlet pipe 11 are sleeved and connected. The outlet pipe 11 can be sleeved outside the external connection pipe 20, or the external connection pipe 20 can be sleeved outside the outlet pipe 11. Compared with the structure where the ends of the external connection pipe 20 and the outlet pipe 11 are butted, the coaxiality of the external connection pipe 20 and the outlet pipe 11 can be ensured, and the overall strength of the connection part between the external connection pipe 20 and the outlet pipe 11 can also be improved.

[0027] The pump assembly in this embodiment includes a check valve 30, which is used to make the liquid sent by the pump flow only to the outside of the pump body 10 and not flow back, ensuring the working safety of the pump body 10.

[0028] As shown in the appendix Figure 1 、 2As 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 connection pipe 20. During installation, first insert the first end of the check valve 30 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 provide good radial limit for the check valve 30.

[0029] In this embodiment, a seal is formed between the outer side wall of the valve body 31 and 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 here. In actual setting, a first seal 52 can be provided between the inner wall of the outlet pipe 11 and the outer wall of the valve body 31. Specifically, a seal groove 311 can be provided on the outer wall of the valve body 31, and the first seal 52 is embedded in the seal groove 311, and a part of the first seal 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 seal 52 will be jointly squeezed by the valve body 31 and the outlet pipe 11 to form a seal, and the squeezed first seal 52 can also play an auxiliary role in fixing the check valve 30, enabling the check valve 30 to be fixed in the outlet pipe 11 without external force. However, it should be noted that at this time, the check valve 30 can move axially under the action of external force, and one end of the check valve 30 is exposed outside the outlet pipe 11, and the staff can pull out the check valve 30 from the outlet pipe 11 through the end exposed outside the outlet pipe 11, which is convenient for operation.

[0030] As described above, after the check valve 30 is pre-fixed in the outlet pipe 11, the external connection pipe 20 is then docked with the outlet pipe 11. Specifically, the input end of the external connection pipe 20 is opposed to the outlet pipe 11. First, insert the part of the check valve 30 exposed outside the outlet pipe 11 into the external connection pipe 20, and then move the external connection pipe 20 along the axis direction of the outlet pipe 11, and finally realize the socket connection with the outlet pipe 11. The external connection pipe 20 in this embodiment can be set as a structure sleeved outside the outlet pipe 11, so the inner diameter of the input end of the external connection pipe 20 is relatively large, that is, there is a large gap between the valve body 31 of the check valve 30 and the inner wall of the external connection pipe 20 (compared with the gap between the valve body 31 and the outlet pipe 11). During assembly, the collision risk between the external connection pipe 20 and the check valve 30 can be reduced.

[0031] During actual use, the check valve 30 will be impacted by the water flow. Therefore, the position of the check valve 30 generally needs 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 connection pipe 20. After the outlet pipe 11 and the external connection pipe 20 are connected, both axial ends of the check valve 30 are limited by the first limiting portion 111 and the second limiting portion 211 respectively, that is, the check valve 30 is axially constrained between the first limiting portion 111 and the second limiting portion 211. With the fixation in the radial direction, the check valve 30 can be stably installed in the outlet pipe 11 and the external connection pipe 20.

[0032] In this embodiment, by providing a detachable connection between the external connection pipe 20 and the outlet pipe 11, as well as a detachable connection structure for the check valve 30, during use, when a failure occurs, the external connection pipe 20 and the check valve 30 can be quickly detached from the pump body 10, thereby improving the maintenance efficiency.

[0033] As one embodiment of the present invention, refer to the attached Figure 2 , when the external connection 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.

[0034] In this embodiment, when assembling the check valve 30, generally, the check valve 30 is first inserted into the outlet pipe 11, and the first end of the valve body 31 of the check valve 30 abuts against the first limiting portion 111. After the outlet pipe 11 is connected to the external connection pipe 20, a gap generally forms between the second end of the check valve 30 and the second limiting portion 211. This can avoid the axial pressing on the valve body 31, enabling the valve body 31 to have a certain amount of movement in the axial direction, and avoiding damage and inconvenient disassembly that may be caused by long-term pressing.

[0035] It should be noted that, in this embodiment, when the external connection pipe 20 is connected to the outlet pipe 11, the axial distance H between the first limiting portion 111 and the second limiting portion 211, which is generally greater than the axial length of the valve body 31, ranges from 0.05 mm to 0.1 mm.

[0036] As one embodiment of the present invention, refer to 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 connection pipe 20 and forms an annular structure.

[0037] 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.

[0038] 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 near the first limiting portion 111.

[0039] The valve mounting hole in the present embodiment is configured as a conical structure. In actual configuration, the mounting opening of the valve mounting hole has a relatively large diameter, 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 facilitate the sealing between the check valve 30 and the inner wall of the outlet pipe 11. By using different diameters at different parts of the valve mounting hole, the compression amount of the first sealing member 52 can be ensured, thereby achieving a good sealing effect.

[0040] 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, there is no resistance to the removal of the check valve 30. Furthermore, during removal, the check valve 30 itself will not be damaged and it is more convenient to remove. In actual use, generally, only the first sealing member 52 (a wearing part) needs to be replaced.

[0041] 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 can be compressed and sealed.

[0042] As one of the embodiments of the present invention, see the attached Figure 1 , 3 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 connection 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 connector 40, wherein the first plug-in portion and the second plug-in portion are arranged opposite to each other, and the connector 40 is plug-connected with the first plug-in portion and the second plug-in portion respectively, and the plug-in direction intersects with the axis of the outlet tube 11, so as to limit the relative movement of the external tube 20 and the outlet tube 11 in the axial direction; The second connection mechanism includes a third insertion part provided on the outer connection pipe 20 and a fourth insertion part provided on the outlet pipe 11. The third insertion part and the fourth insertion part face each other along the axis of the outlet pipe 11 and are inserted and connected to position the relative positions of the outer connection pipe 20 and the outlet pipe 11 in the circumferential direction.

[0043] This embodiment provides a mechanism for detachably sleeving and connecting an outer connection pipe 20 and an outlet pipe 11. The detachable connection structure in this embodiment is designed when the outer connection pipe 20 is sleeved outside the outlet pipe 11.

[0044] A first connection mechanism is provided between the outer connection pipe 20 and the outlet pipe 11 in this embodiment. The first connection mechanism includes a first insertion part, a second insertion part, and a connecting piece 40. Among them, the connecting piece 40 is inserted and connected to the first insertion part and the second insertion part at the same time. Equivalently, the connecting piece 40 connects the outlet pipe 11 and the outer connection pipe 20 through the first insertion part and the second insertion part. The insertion direction of the connecting piece 40 (and the first insertion part and the second insertion part) intersects the axis of the outlet pipe 11. After being inserted and connected in this way, the connecting piece 40 can prevent the outlet pipe 11 and the outer connection pipe 20 from moving relative to each other in the axial direction, realizing the relative fixation of the outlet pipe 11 and the outer connection pipe 20 in the axial direction.

[0045] In addition, a second connection mechanism is further provided between the outer connection pipe 20 and the outlet pipe 11 in this embodiment. The second connection mechanism includes a third insertion part and a fourth insertion part that face each other and are inserted and connected along the axis of the outlet pipe 11. The insertion direction of the third insertion part and the fourth insertion part is along the axial direction. After being inserted and connected in this way, the connecting piece 40 can prevent the outlet pipe 11 and the outer connection pipe 20 from rotating relative to each other in the circumferential direction, realizing the relative fixation of the circumferential positions of the outlet pipe 11 and the outer connection pipe 20.

[0046] In addition, it should be noted that the second connection structure in this embodiment can also play a role in positioning the outer connection pipe 20 and the outlet pipe 11. Since the third insertion part and the fourth insertion part are opposite to each other along the axis, when the outer connection pipe 20 is installed on the outlet pipe 11, it only needs to ensure that the positions of the third insertion part and the fourth insertion part are opposite to each other, and the first insertion part and the second insertion part can be in opposite positions, facilitating the quick installation and disassembly of the two.

[0047] Through the arrangement of the first connection mechanism and the second connection mechanism in this embodiment, the outer connection pipe 20 and the outlet pipe 11 are limited in two directions, namely the axial direction and the circumferential direction, after docking, so that the outer connection pipe 20 and the outlet pipe 11 are completely fixed, ensuring the stability during use. Moreover, both the first connection mechanism and the second connection mechanism in this embodiment are structures connected by insertion. During use, the assembly and disassembly are relatively convenient.

[0048] As one of the embodiments of the present invention, see the appendixFigures 5 to 8 The first plug-in part includes two plug-in slots 112 located on opposite sides of the outer wall of the outlet pipe 11. The plug-in slots 112 are arranged tangentially. The second plug-in part includes two plug-in holes 212 arranged on opposite sides of the outer wall of the outer connection pipe 20. The plug-in holes 212 are arranged tangentially. The two plug-in holes 212 and the two plug-in slots 112 correspond to each other one by one. The connecting member 40 includes a connecting part 42 and two plug-in parts 41 arranged at intervals. The two plug-in parts 41 are respectively inserted into the corresponding plug-in holes 212 and plug-in slots 112 on both sides, and the two plug-in parts 41 are fixedly connected through the connecting part 42.

[0049] In this embodiment, the two plug-in slots 112 and the two plug-in holes 212 are arranged (relatively arranged on both sides of the pipe fitting, symmetrically arranged). During installation, the assembly efficiency can be improved, and the problem of needing to control the docking direction when arranged on one side can be avoided. Moreover, the structure of plugging and connecting on both sides can also improve the reliability and stability of the connection between the outlet pipe 11 and the outer connection pipe 20.

[0050] In actual setting, the opening directions of the plug-in slots 112 and the plug-in holes 212 are along the tangential direction of the pipe fitting, and the connecting member 40 is arranged in a "U" shape as shown in the appendix Figure 9 In this way, the symmetrically designed structure on both sides can not only limit the relative axial positions of the outlet pipe 11 and the outer connection pipe 20, but also fix the relative circumferential positions of the outlet pipe 11 and the outer connection pipe 20 through the mutual cooperation of the plugging structures on both sides. That is, only through the first connection mechanism, the axial and circumferential positions of the outlet pipe 11 and the outer connection pipe 20 can be fixed. With the setting of the second connection mechanism, the connection stability between the two can be further improved.

[0051] In the design of the plug-in slot 112 in this embodiment, it can penetrate the side wall of the outer connection pipe 20, while the plug-in slot 112 does not penetrate the side wall of the outlet pipe 11. When the connecting member 40 is simultaneously plugged and connected with the plug-in slot 112 and the plug-in hole 212, the plug-in part 41 of the connecting member 40 penetrates into the outer connection pipe 20 from the plug-in hole and is inserted into the plug-in slot 112.

[0052] When it is necessary to disassemble the outlet pipe 11 and the outer connection pipe 20, only the connecting member 40 needs to be pulled out so that it is simultaneously separated from the plug-in slot 112 and the plug-in hole 212. In this way, the outlet pipe 11 and the outer connection pipe 20 can generate relative axial movement, and then the outer connection pipe 20 can be axially separated from the outlet pipe 11 to realize the mutual separation of the outlet pipe 11 and the outer connection pipe 20.

[0053] In actual setting of the insertion slot 112 on the outlet pipe 11 in this embodiment, a circumferentially protruding reinforcing structure 115 can be first formed on the outer wall of the outlet pipe 11, and then the insertion slot 112 is arranged on the reinforcing structure 115. On the one hand, this facilitates the processing of the insertion slot 112, and on the other hand, it can improve the overall strength of the outlet pipe 11.

[0054] As one embodiment of the present invention, refer to the appendix Figures 6 to 8 The outer connecting pipe 20 includes a connecting pipe body 21 and a positioning member 24. The input end of the connecting pipe body 21 is sleeved outside 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 at the middle position between the two insertion 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 insertion portion and the second insertion portion, the connecting portion 42 is clamped into the set interval to limit the connecting member 40 from disengaging from the first insertion portion and the second insertion portion without external force.

[0055] In this embodiment, the positioning member 24 is arranged on the outer wall of the connecting pipe body 21. During use, when the connecting member 40 is inserted into the first insertion portion and the second insertion portion, the positioning member 24 is clamped by the interval between the pressing portion 242 and the outer wall of the connecting pipe body 21, so that the connecting member 40 will not automatically release the inserted state with the first insertion portion and the second insertion portion. In actual use, at least one of the connecting member 40 itself or the pressing portion 242 can be set as an elastic structure. In this way, during insertion, the connecting portion 42 of the connecting member 40 can be clamped into the set interval 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 outer connecting pipe 20. No matter how the outer connecting pipe 20 faces during actual use, the connecting member 40 will not automatically disengage from the inserted state). When it is necessary to detach the outer connecting pipe 20, the elastic structure can be elastically deformed by an external force, so that the connecting member 40 can be pulled out from the set interval.

[0056] The surface of the connecting portion 42 in contact with the outer connecting pipe 20 in this embodiment can be set as an arc surface adapted to the outer circular surface of the outer connecting pipe 20. In this way, when the connecting member 40 is clamped in the set interval, an arc surface contact fit is formed between the connecting portion 42 and the outer connecting pipe 20, improving the stability of the connecting member 40.

[0057] 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 a certain elastic deformation of the positioning member 24 or the connecting member 40, thereby preventing the connecting member 40 from being blocked and unable to be inserted.

[0058] 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 tube 11. The two axial slots 213 and the two axial plug blocks 113 are arranged one by one along the axial direction and are respectively plugged in and connected.

[0059] In this embodiment, two axial slots 213 and two axial insert blocks 113 are symmetrically arranged, so that in actual use, the problem of single-side orientation when the external pipe 20 and the outlet pipe 11 are connected can be avoided, and the assembly efficiency can be improved.

[0060] See attached Figure 3 After the axial slot 213 and the axial insert block 113 in this embodiment are plugged into each other, a limit is formed in the circumferential direction 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.

[0061] It should be noted that, in the present embodiment, the axial plug block 113 and the plug groove 112 on the outlet pipe 11 are arranged in the same position 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 position. 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 realizing the rapid and correct docking of the external pipe 20 and the outlet pipe 11, thereby improving the assembly efficiency.

[0062] As one of the embodiments of the present invention, see the attached Figure 2 , 5 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 .

[0063] In this embodiment, the first positioning platform 214 protrudes from the inner wall of the outer connecting pipe 20. During the sleeving process of the outer connecting pipe 20 and the outlet pipe 11, it can position the end of the outlet pipe 11 from the inside, ensuring the axial docking length between the outer connecting pipe 20 and the outlet pipe 11. Moreover, the first positioning platform 214 can also improve the pipe body strength at the input end of the outer connecting pipe 20.

[0064] The function of the second positioning platform 114 in this embodiment is similar to that of the first positioning platform 214. The second positioning platform 114 is arranged on the outer wall of the outlet pipe 11, and it can position the end of the outer connecting pipe 20 from the outside. In actual setting, the second positioning platform 114 can be integrally connected with the axial insert block 113, so as to form circumferential and axial convex structures on the outer wall of the outlet pipe 11, greatly improving the overall strength of the outlet pipe 11.

[0065] As one embodiment of the present invention, refer to Appendices Figure 1 、 6 、7、8. The outer connecting 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 sleeved and connected with 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 communicated with the connecting pipe body 21. The plurality of water outlet pipes 22 extend in different circumferential directions of the connecting pipe body 21 and respectively form water outlets. The plug 23 is used to selectively block the water outlets.

[0066] In this embodiment, the output end of the outer connecting pipe 20 forms a plurality of water outlet pipes 22, which are arranged in different directions. In actual use, the design of the plurality of water outlet pipes 22 can improve the flexibility of use.

[0067] Specifically, when the installation position of the pump is limited, for example, after the pump is installed, if the orientation of one of the water outlets is inconvenient to be docked with the outer connecting pipe 20, and there is only one water outlet (the one at the inconvenient docking position), in order to ensure normal water output at this time, it is necessary to adjust the installation state of the pump body 10, and then it may be necessary to improve the installation environment, so the actual operation is rather cumbersome.

[0068] In this embodiment, through the design of the plurality of water outlet pipes 22, when one of the water outlets is restricted, the plug 23 can be used to block the water outlet on the restricted water outlet pipe 22, and the water outlet pipe 22 at other unrestricted positions can be used for pipeline connection to discharge water, avoiding the need to adjust the operation of the pump body 10, and thus improving the work efficiency.

[0069] Certainly, in some usage scenarios, if water needs to be supplied to different places, then at this time, the plurality of water outlet pipes 22 can be respectively connected to pipe fittings to achieve water supply in different directions, thus realizing the multi-purpose use of one pump and improving the work efficiency of the pump.

[0070] 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 the non-working state, and it can be connected to the water outlet pipe 22 through threaded connection.

[0071] The water outlet pipe 22 in this embodiment can be set to two, three or more according to actual needs.

[0072] As a further embodiment of the present invention, refer to the appendix Figure 1 , 2 , the pump assembly further includes a first seal 52 and a second seal 51. A seal groove 311 is formed on the outer side wall of the valve body 31. The first seal 52 is arranged in the seal 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 connection part of the outlet pipe 11 and the outer connecting pipe 20.

[0073] A first seal 52 and a second seal 51 are respectively arranged between the outlet pipe 11 and the check valve and between the outer connecting pipe 20 and the outlet pipe 11. During actual use, it can prevent liquid from leaking at the docking part of the outlet pipe 11 and the outer connecting pipe 20, and thus can ensure the seal of the docking part and the water pressure of the water outlet.

[0074] The above is only the specific implementation manner of the present invention, but the protection scope 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 content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A pump assembly, comprising a pump body (10) and an outer connecting pipe (20), the pump body (10) includes an outlet pipe (11), and the input end of the outer connecting pipe (20) is connected to the output end of the outlet pipe (11), characterized in that, the outer connecting pipe (20) is detachably sleeved and connected to the outlet pipe (11); the pump assembly further includes a check valve (30), the check valve (30) includes a valve body (31), the first end of the valve body (31) is inserted into the outlet pipe (11), the second end is inserted into the outer connecting pipe (20), the outer side wall of the valve body (31) forms a seal with the inner wall of the outlet pipe (11), and the check valve (30) allows fluid to flow unidirectionally from the outlet pipe (11) to the outer connecting pipe (20); 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 outer connecting pipe (20); when the outer connecting pipe (20) and the outlet pipe (11) are connected, the valve body (31) is axially limited between the first limiting portion (111) and the second limiting portion (211).

2. The pump assembly according to claim 1, wherein, When the outer connecting pipe (20) and the outlet pipe (11) are connected, 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).

3. The pump assembly according to claim 2, characterized in that, A valve mounting hole is formed in the outlet pipe (11), 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 as a conical structure, and the inner diameter of the valve mounting hole at the end close to the output end of the outlet pipe (11) is greater than the inner diameter at the end close to the first limiting portion (111).

4. The pump assembly according to claim 1, wherein, The input end of the outer connecting 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 outer connecting pipe (20) and the outlet pipe (11); The first connecting mechanism includes a first plugging portion provided on the outer connecting pipe (20), a second plugging portion provided on the outlet pipe (11), and a connecting member (40), the first plugging portion and the second plugging portion are arranged oppositely, the connecting member (40) is respectively plugged and connected to the first plugging portion and the second plugging portion, and the plugging direction intersects with the axis of the outlet pipe (11) to limit the relative axial movement of the outer connecting pipe (20) and the outlet pipe (11); The second connecting mechanism includes a third plugging portion provided on the outer connecting pipe (20) and a fourth plugging portion provided on the outlet pipe (11), the third plugging portion and the fourth plugging portion are opposite and plugged and connected along the axis direction of the outlet pipe (11) to position the relative circumferential positions of the outer connecting pipe (20) and the outlet pipe (11).

5. The pump assembly according to claim 4, characterized in that, The first plug-in part includes two plug-in slots (112) located on opposite sides of the outer wall of the outlet pipe (11). The plug-in slots (112) are arranged tangentially. The second plug-in part includes two plug-in holes (212) arranged on opposite sides of the outer wall of the outer connection pipe (20). The plug-in holes (212) are arranged tangentially. The two plug-in holes (212) and the two plug-in slots (112) correspond to each other one by one. The connecting member (40) includes a connecting part (42) and two plug-in parts (41) arranged at intervals. The two plug-in parts (41) are respectively inserted into the corresponding plug-in holes (212) and plug-in slots (112) on both sides, and the two plug-in parts (41) are fixedly connected through the connecting part (42).

6. The pump assembly according to claim 5, wherein, The outer connection 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 part (241) and a pressing part (242). The supporting part (241) protrudes from the outer wall of the connecting pipe body (21). The pressing part (242) is arranged on the supporting part (241) and is located at the middle position between the two plug-in slots (112). The pressing part (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 part and the second plug-in part, the connecting part (42) is snapped into the set interval to limit the connecting member (40) from disengaging from the first plug-in part and the second plug-in part without external force.

7. The pump assembly according to claim 4, characterized in that, The third plug-in part includes two axial slots (213) arranged on opposite sides of the end of the outer connection pipe (20). The fourth plug-in part 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 one-to-one correspondence along the axis and are respectively plugged and connected.

8. The pump assembly according to any one of claims 1 to 7, characterized in that, A first positioning table (214) opposite to the end of the outlet pipe (11) is formed on the inner wall of the outer connection pipe (20). A second positioning table (114) opposite to the end of the outer connection pipe (20) is formed on the outer wall of the outlet pipe (11).

9. The pump assembly according to any one of claims 1 to 7, characterized in that, The outer connection 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 sleeved and connected with 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 communicated with 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 respectively form water outlets. The plug (23) is used to selectively block the water outlets.

10. The pump assembly according to any one of claims 1 to 7, characterized in that, The pump assembly further includes a first seal (52) and a second seal (51). A seal groove (311) is formed on the outer sidewall of the valve body (31). The first seal (52) is disposed in the seal groove (311) and abuts against the inner wall of the outlet pipe (11). The second seal (51) is disposed between the inner wall and the outer wall at the socket connection part of the outlet pipe (11) and the external connection pipe (20).

Images