Centrifugal axial flow pump

Abstract

The utility model discloses a centrifugal axial flow pump which comprises a pump body, a motor and centrifugal fan blades. The pump body is provided with a pump input hole, a pump output hole, a centrifugal pump cavity, a centrifugal cavity outlet hole, a motor installation part and an axial flow channel. The pump input hole, the centrifugal pump cavity, the motor installation part and the pump output hole are sequentially arranged in the axial direction of the pump body. The pump input hole is communicated with the axis position of the centrifugal pump cavity, the centrifugal cavity outlet hole is communicated with the peripheral side position of the centrifugal pump cavity, the axial flow channel is arranged on the peripheral side of the motor installation part and extends in the axial direction of the pump body, one end of the axial flow channel is communicated with the centrifugal cavity outlet hole, and the other end of the axial flow channel is communicated with the pump output hole. The motor is arranged on the motor mounting part, and the centrifugal fan blades are arranged on an output shaft of the motor and located in the centrifugal pump cavity. According to the centrifugal axial flow pump of the structure, axial pumping drainage of fluid can be achieved through the structure of a centrifugal pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pump especially relates to a centrifugal axial flow pump. BACKGROUND

[0002] In the prior art, for some products using pumps, such as intelligent toilet, fish tank and the like, due to the need of internal structure, axial flow pump is often used. When the axial flow pump pumps fluid, the main flow direction of the internal fluid is along the axial direction of the pump. This kind of pump structure can optimize the internal waterway, which is beneficial to reduce the structure size. At present, the axial flow pump usually adopts axial flow fan blades to realize the axial pumping of fluid. For some manufacturers mainly producing centrifugal pumps, if they want to produce this kind of axial flow pump, they need to redesign and adjust or build a new axial flow pump production line, which is troublesome in production and manufacturing. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, the utility model provides a centrifugal axial flow pump, which is convenient for centrifugal pump manufacturers to manufacture and produce.

[0004] The centrifugal axial flow pump according to the utility model embodiment comprises a pump body, a pump input hole, a pump output hole, a centrifugal pump cavity, a centrifugal cavity outlet hole, a motor mounting portion and an axial flow channel, the pump input hole, the centrifugal pump cavity, the motor mounting portion and the pump output hole are sequentially arranged along the axial direction of the pump body, the axial center position of the pump input hole and the centrifugal pump cavity is communicated, the circumferential position of the centrifugal pump cavity and the centrifugal cavity outlet hole is communicated, the axial flow channel is arranged on the outer circumferential side of the motor mounting portion and extends along the axial direction of the pump body, one end of the axial flow channel is communicated with the centrifugal cavity outlet hole, and the other end of the axial flow channel is communicated with the pump output hole; a motor is arranged on the motor mounting portion; and a centrifugal fan blade is arranged on the output shaft of the motor and located in the centrifugal pump cavity.

[0005] The centrifugal axial flow pump according to the utility model embodiment has at least the following beneficial effects: the centrifugal axial flow pump is provided with an axial flow channel on the outer circumferential side of the motor mounting portion, the centrifugal cavity outlet hole and the pump output hole are communicated through the axial flow channel extending in the axial direction, so that the axial pumping of fluid can be realized by using the structure of the centrifugal pump, and the centrifugal pump manufacturers can conveniently manufacture and produce.

[0006] According to some embodiments of the utility model, the pump body comprises a main body portion, an inlet end cover and an outlet end cover, the inlet end cover and the outlet end cover are respectively fixed on the two ends of the main body portion, the pump input hole is arranged on the inlet end cover, the pump output hole is arranged on the outlet end cover, and the motor mounting portion and the axial flow channel are arranged on the main body portion.

[0007] According to some embodiments of the utility model, the inlet end cover is provided with a pump cavity groove, the pump input hole is arranged on the groove bottom of the pump cavity groove, the groove mouth of the pump cavity groove is in sealing connection with the end face of the main part, and the main part and the pump cavity groove form the centrifugal pump cavity.

[0008] According to some embodiments of the utility model, one end of the axial flow channel close to the inlet end cover penetrates to the end face of the main part and forms an input port, the periphery of the pump cavity groove is provided with an annular groove, the groove mouth of the annular groove is in sealing connection with the end face of the main part, the groove mouth of the annular groove is opposite to the input port of the axial flow channel and is in communication with each other, the centrifugal cavity outlet hole is arranged on the groove side wall of the pump cavity groove, and the centrifugal cavity outlet hole is in communication with the pump cavity groove and the annular groove.

[0009] According to some embodiments of the utility model, one end of the axial flow channel close to the outlet end cover penetrates to the end face of the main part and forms an output port, the outlet end cover is provided with an output groove, the pump output hole is arranged on the groove bottom of the output groove, the groove mouth of the output groove is in sealing connection with the end face of the main part, and the groove mouth of the output groove is opposite to the output port of the axial flow channel and is in communication with each other.

[0010] According to some embodiments of the utility model, the main part comprises the motor mounting part and the outer sleeve part, the outer sleeve part is sleeved on the periphery of the motor mounting part, the outer sleeve part and the motor mounting part form the axial flow channel, and the outer sleeve part and the motor mounting part are connected with the connecting rib for supporting both.

[0011] According to some embodiments of the utility model, the motor mounting part is provided with a motor mounting cavity, the motor is mounted in the motor mounting cavity, a wire passing block is arranged between the outer sleeve part and the motor mounting part, the wire passing block is provided with a wire passing hole, one end of the wire passing hole penetrates to the outer peripheral surface of the outer sleeve part, and the other end of the wire passing hole penetrates to the motor mounting cavity.

[0012] According to some embodiments of the utility model, the motor mounting part is provided with a motor mounting cavity, the motor mounting cavity comprises a rotor cavity and a stator cavity, the motor mounting part comprises a rotor cylinder and a stator cylinder, the stator cylinder is sleeved on the periphery of the rotor cylinder, the rotor cavity is the inner cavity of the rotor cylinder, the rotor cavity is in communication with the centrifugal pump cavity, the stator cavity is the inner cavity of the stator cylinder, the stator cavity is separated from the rotor cavity through the cylinder wall of the rotor cylinder, the motor comprises a rotor and a stator, the rotor is arranged in the rotor cavity, the stator is arranged in the stator cavity, and the stator cavity is filled with potting glue.

[0013] According to some embodiments of the present application, the outlet end cover is detachably connected.

[0014] According to some embodiments of the present application, the inlet end cover is detachably connected.

[0015] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, of embodiments of the present application, in which:

[0017] Figure 1 is a perspective view of an embodiment of the present application;

[0018] Figure 2 is an exploded view of an embodiment of the present application;

[0019] Figure 3 is a sectional view of an embodiment of the present application;

[0020] Figure 4 is a perspective view of an inlet end cover of an embodiment of the present application;

[0021] Figure 5 is a perspective view of an outlet end cover of an embodiment of the present application;

[0022] Figure 6 is one of perspective views of a main body portion of a pump body of an embodiment of the present application;

[0023] Figure 7 is another of perspective views of a main body portion of a pump body of an embodiment of the present application;

[0024] Figure 8 is a perspective view of an embodiment of the present application after replacing different inlet end covers and outlet end covers.

[0025] REFERENCE NUMERALS:

[0026] Pump body 100, pump input hole 101, pump output hole 102, centrifugal pump cavity 103, centrifugal cavity outlet hole 104, motor mounting portion 105, axial flow passage 106, main body portion 110, inlet end cover 120, outlet end cover 130, pump cavity groove 121, annular groove 122, output groove 131, outer sleeve portion 107, connecting rib 108, wire passing block 109, wire passing hole 1091, rotor cavity 1051, stator cavity 1052, rotor cylinder 1053, stator cylinder 1054;

[0027] Motor 200, rotor 210, stator 220;

[0028] Centrifugal fan blade 300. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0032] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0033] Referring to Figures 1 to 8A centrifugal axial flow pump includes a pump body 100, a motor 200 and a centrifugal fan 300. The pump body 100 is provided with a pump input hole 101, a pump output hole 102, a centrifugal pump cavity 103, a centrifugal cavity outlet hole 104, a motor mounting portion 105 and an axial flow channel 106. The pump input hole 101, the centrifugal pump cavity 103, the motor mounting portion 105 and the pump output hole 102 are arranged in sequence along the axial direction of the pump body 100. The axial direction of the pump body 100 is indicated by the double arrow a in the drawing. The pump input hole 101 is in communication with the axial position of the centrifugal pump cavity 103. The centrifugal cavity outlet hole 104 is in communication with the circumferential position of the centrifugal pump cavity 103. The axial flow channel 106 is arranged at the outer circumferential side of the motor mounting portion 105 and extends along the axial direction of the pump body 100. One end of the axial flow channel 106 is in communication with the centrifugal cavity outlet hole 104. The other end of the axial flow channel 106 is in communication with the pump output hole 102. The motor 200 is arranged in the motor mounting portion 105. The centrifugal fan 300 is arranged on the output shaft of the motor 200 and located in the centrifugal pump cavity 103. The motor 200 is used to drive the centrifugal fan 300 to rotate. When the centrifugal fan 300 rotates, a relative negative pressure is formed at the axial position of the centrifugal pump cavity 103. External fluid enters the centrifugal pump cavity 103 through the pump input hole 101. Under the action of the centrifugal fan 300, the fluid is thrown to the circumferential side of the centrifugal pump cavity 103, flows out to one end of the axial flow channel 106 through the centrifugal cavity outlet hole 104, and is output through the pump output hole 102 after passing through the axial flow channel 106, thereby realizing the axial pumping function of the axial flow pump.

[0034] The centrifugal axial flow pump described above can realize the axial pumping of fluid by the structure of the centrifugal pump, through arranging the axial flow channel 106 at the outer circumferential side of the motor mounting portion 105 and connecting the centrifugal cavity outlet hole 104 and the pump output hole 102 through the axially extending axial flow channel 106.

[0035] In the embodiment, the pump body 100 includes a main body portion 110, an inlet end cover 120 and an outlet end cover 130. The inlet end cover 120 and the outlet end cover 130 are respectively fixed to the two ends of the main body portion 110. The pump input hole 101 is arranged in the inlet end cover 120. The pump output hole 102 is arranged in the outlet end cover 130. The motor mounting portion 105 and the axial flow channel 106 are arranged in the main body portion 110. The above structure can facilitate the manufacturing of the pump body 100. In addition, different main body portions 110, inlet end covers 120 and outlet end covers 130 can be combined to produce pumps with different inlet and outlet configurations, such as shown in Figure 8 The structure shown in Figure 8 The inlet end cover 120 adopts a 90° elbow input structure. The outlet end cover 130 is provided with some flange fixing structures.

[0036] In the embodiment, the inlet end cover 120 is provided with a pump cavity groove 121, the pump input hole 101 is arranged at the groove bottom of the pump cavity groove 121, the groove opening of the pump cavity groove 121 is sealingly connected with the end face of the main body part 110, and the main body part 110 and the pump cavity groove 121 form the centrifugal pump cavity 103. By using the above structure, the centrifugal pump cavity 103 can be simply structured, and the manufacturing is facilitated.

[0037] In the embodiment, the shaft flow channel 106 is through to the end face of the main body part 110 and forms an input port at one end close to the inlet end cover 120, the pump cavity groove 121 is provided with an annular groove 122 around the four sides, the groove opening of the annular groove 122 is sealingly connected with the end face of the main body part 110, the groove opening of the annular groove 122 is opposite to the input port of the shaft flow channel 106 and is in communication with each other, and the centrifugal cavity outlet hole 104 is arranged at the groove side wall of the pump cavity groove 121 and is in communication with the pump cavity groove 121 and the annular groove 122. By using the above structure, the communication between the shaft flow channel 106 and the centrifugal pump cavity 103 can be simply achieved, and the production and manufacturing are facilitated.

[0038] In the embodiment, the shaft flow channel 106 is through to the end face of the main body part 110 and forms an output port at one end close to the outlet end cover 130, the outlet end cover 130 is provided with an output groove 131, the pump output hole 102 is arranged at the groove bottom of the output groove 131, the groove opening of the output groove 131 is sealingly connected with the end face of the main body part 110, and the groove opening of the output groove 131 is opposite to the output port of the shaft flow channel 106 and is in communication with each other. By using the above structure, the communication between the shaft flow channel 106 and the pump output hole 102 can be simply achieved, and the production and manufacturing are facilitated.

[0039] In the embodiment, the main body part 110 includes a motor mounting part 105 and an outer sleeve part 107, the outer sleeve part 107 is sleeved on the outer periphery of the motor mounting part 105, the outer sleeve part 107 and the motor mounting part 105 form the shaft flow channel 106, and the connecting ribs 108 connecting the outer sleeve part 107 and the motor mounting part 105 are arranged between the outer sleeve part 107 and the motor mounting part 105. By using the above structure, the shaft flow channel 106 can be simply formed, and the production and manufacturing are facilitated.

[0040] In the embodiment, the connecting ribs 108 can be arranged in plurality and arranged in the circumferential direction, so as to uniformly support the outer sleeve part 107 and the motor mounting part 105. In the embodiment, the connecting ribs 108 are long strips extending in the axial direction. It can be imagined that the number and shape structure of the connecting ribs 108 are not limited to the above embodiment, and the person skilled in the art can reasonably configure according to the actual situation.

[0041] In the embodiment, the motor mounting portion 105 is provided with a motor mounting cavity, the motor 200 is mounted in the motor mounting cavity, a wire passing block 109 is arranged between the outer sleeve portion 107 and the motor mounting portion 105, the wire passing block 109 is provided with a wire passing hole 1091, one end of the wire passing hole 1091 penetrates to the outer circumferential surface of the outer sleeve portion 107, and the other end of the wire passing hole 1091 penetrates to the motor mounting cavity. By using the above structure, the wire passing hole 1091 of the wire passing block 109 can be used to pass through the space between the outer sleeve portion 107 and the motor mounting portion 105, the electric wire can conveniently enter and exit the motor mounting cavity, and the electric wire can be isolated from the axial flow channel 106, so that the isolation of the electric wire can be achieved in a simple structure.

[0042] In the embodiment, the motor mounting cavity includes a rotor cavity 1051 and a stator cavity 1052, the motor mounting portion 105 includes a rotor cylinder 1053 and a stator cylinder 1054, the stator cylinder 1054 is sleeved on the outer periphery of the rotor cylinder 1053, the rotor cavity 1051 is the inner cavity of the rotor cylinder 1053, the rotor cavity 1051 is in communication with the centrifugal pump cavity 103, the stator cavity 1052 is the inner cavity of the stator cylinder 1054, the stator cavity 1052 is separated from the rotor cavity 1051 by the cylinder wall of the rotor cylinder 1053, the motor 200 includes a rotor 210 and a stator 220, the rotor 210 is arranged in the rotor cavity 1051, and the stator 220 is arranged in the stator cavity 1052. The stator cavity 1052 is filled with potting glue. By using the above structure, the rotor 210 and the stator 220 can be separated, the electrical isolation can be improved, the rotor 210 can be immersed in the fluid during operation, and heat dissipation can be facilitated.

[0043] In the embodiment, the outlet end cover 130 is detachably connected, and outlet end covers 130 with different outlet structures can be combined as needed.

[0044] In the embodiment, the inlet end cover 120 is detachably connected, and inlet end covers 120 with different inlet structures can be combined as needed.

[0045] In the embodiment, the outlet end cover 130 and the inlet end cover 120 are locked to the main body portion 110 by screws, so that detachability can be achieved. Of course, it can be imagined that the outlet end cover 130 and the inlet end cover 120 can also be mounted on the main body portion 110 by other detachable structures, such as a buckle structure, a threaded structure, etc. It can be understood that, in some embodiments, the outlet end cover 130 and the inlet end cover 120 can also not use a detachable structure, and can be fixed to the main body portion 110 by welding, fastener riveting, etc.

[0046] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0047] The utility model embodiment has been explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiment, still can make various changes in the knowledge range of ordinary skill in the art who has possessed under the premise of not departing from the utility model tenet.

Claims

1. A centrifugal axial flow pump, characterized in that, include: The pump body (100) is provided with a pump inlet (101), a pump outlet (102), a centrifugal pump chamber (103), a centrifugal chamber outlet (104), a motor mounting part (105), and an axial flow channel (106). The pump inlet (101), the centrifugal pump chamber (103), the motor mounting part (105), and the pump outlet (102) are arranged sequentially along the axial direction of the pump body (100). The pump inlet (101) and the centrifugal pump chamber (103) are connected in series. The centrifugal pump chamber (103) is connected at its axial center, the centrifugal chamber outlet (104) is connected to the peripheral side of the centrifugal pump chamber (103), the axial flow channel (106) is located on the outer periphery of the motor mounting part (105) and extends along the axial direction of the pump body (100), one end of the axial flow channel (106) is connected to the centrifugal chamber outlet (104), and the other end of the axial flow channel (106) is connected to the pump output hole (102); A motor (200) is disposed in the motor mounting portion (105); Centrifugal fan blades (300) are disposed on the output shaft of the motor (200) and located in the centrifugal pump chamber (103).

2. The centrifugal axial flow pump according to claim 1, characterized in that: The pump body (100) includes a main body (110), an inlet end cover (120), and an outlet end cover (130). The inlet end cover (120) and the outlet end cover (130) are respectively fixed to both ends of the main body (110). The pump input hole (101) is provided on the inlet end cover (120), the pump output hole (102) is provided on the outlet end cover (130), the motor mounting part (105), and the axial flow channel (106) are provided on the main body (110).

3. The centrifugal axial flow pump according to claim 2, characterized in that: The inlet end cap (120) is provided with a pump chamber groove (121), and the pump input hole (101) is located at the bottom of the pump chamber groove (121). The groove opening of the pump chamber groove (121) is sealed and connected to the end face of the main body (110). The main body (110) and the pump chamber groove (121) enclose each other to form the centrifugal pump chamber (103).

4. The centrifugal axial flow pump according to claim 3, characterized in that: The axial flow channel (106) extends from one end near the inlet end cap (120) to the end face of the main body (110) and forms an inlet. An annular groove (122) is provided around the pump chamber groove (121). The groove opening of the annular groove (122) is sealed to the end face of the main body (110). The groove opening of the annular groove (122) is opposite to and communicates with the inlet of the axial flow channel (106). The centrifugal chamber outlet (104) is provided on the side wall of the pump chamber groove (121). The centrifugal chamber outlet (104) connects the pump chamber groove (121) and the annular groove (122).

5. The centrifugal axial flow pump according to claim 2, characterized in that: The axial flow channel (106) extends from one end near the outlet end cap (130) to the end face of the main body (110) and forms an output port. The outlet end cap (130) is provided with an output groove (131). The pump output hole (102) is located at the bottom of the output groove (131). The groove opening of the output groove (131) is sealed and connected to the end face of the main body (110) around its perimeter. The groove opening of the output groove (131) is opposite to and communicates with the output port of the axial flow channel (106).

6. The centrifugal axial flow pump according to claim 2, characterized in that: The main body (110) includes the motor mounting part (105) and the outer sleeve part (107). The outer sleeve part (107) is sleeved on the outer periphery of the motor mounting part (105). The outer sleeve part (107) and the motor mounting part (105) enclose each other to form the axial flow channel (106). A connecting rib (108) supporting the two is connected between the outer sleeve part (107) and the motor mounting part (105).

7. The centrifugal axial flow pump according to claim 6, characterized in that: The motor mounting part (105) is provided with a motor mounting cavity, and the motor (200) is mounted in the motor mounting cavity. A wire guide block (109) is provided between the outer sleeve part (107) and the motor mounting part (105). The wire guide block (109) is provided with a wire guide hole (1091). One end of the wire guide hole (1091) extends to the outer peripheral surface of the outer sleeve part (107), and the other end of the wire guide hole (1091) extends to the motor mounting cavity.

8. The centrifugal axial flow pump according to claim 1, characterized in that: The motor mounting part (105) is provided with a motor mounting cavity, which includes a rotor cavity (1051) and a stator cavity (1052). The motor mounting part (105) includes a rotor cylinder (1053) and a stator cylinder (1054). The stator cylinder (1054) is sleeved on the outer periphery of the rotor cylinder (1053). The rotor cavity (1051) is the inner cavity of the rotor cylinder (1053). The rotor cavity (1051) and the centrifugal pump cavity (103) are connected. The stator cavity (1052) is connected to the inner cavity of the stator cylinder (1054). The stator cavity (1052) and the rotor cavity (1051) are separated by the cylinder wall of the rotor cylinder (1053). The motor (200) includes a rotor (210) and a stator (220). The rotor (210) is disposed in the rotor cavity (1051), and the stator (220) is disposed in the stator cavity (1052). The stator cavity (1052) is filled with potting compound.

9. The centrifugal axial flow pump according to claim 2, characterized in that: The outlet end cap (130) is detachably connected.

10. The centrifugal axial flow pump according to claim 2, characterized in that: The inlet end cap (120) is detachably connected.

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