Rotor pump capable of being quickly disassembled

Abstract

The rotor pump comprises a pump head and a pump body, an end cover is arranged on the side, away from the pump body, of the pump head, a cavity used for containing a rotor, a feeding port and a discharging port are formed in the pump head, the feeding port and the discharging port are communicated with the cavity, and the pump head is detachably connected with the end cover through a fast-assembling assembly. A rotating shaft and a rotor assembly are arranged in the pump body, and the rotor comprises an iron core and fluororubber wrapping the iron core. A sealing assembly is arranged between the rotating shaft and the pump head and arranged outside the pump body. The pump head and the end cover are installed through the quick assembly assembly, the pump head is quickly disassembled and assembled, meanwhile, the internal rotor can be conveniently cleaned and replaced, and the cleaning efficiency and the cleaning cleanliness are improved; the sealing assembly between the rotating shaft and the pump head adopts an external structure, so that the sealing assembly can be replaced after being abraded; and the first sealing group or the second sealing group can be selected according to different scene requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotor pumps, and in particular relates to a quickly detachable rotor pump. Background Art

[0002] The rotor pump achieves the purpose of conveying fluid by means of the periodic transformation of multiple fixed volume conveying units in the working chamber. In the working process, the rotor pump actually achieves a higher vacuum degree and discharge pressure through a pair of synchronously rotating rotors.

[0003] Existing rotor pumps, especially those used in the food field, usually include a pump body, a pump cover, a rotor and other components, wherein the pump body and the pump cover are split structures. When cleaning the rotor of a rotor pump with this structure, it is usually necessary to remove the pump cover first and then clean it. The existing pump cover opening method is relatively rough, especially for conveying high-viscosity materials, the pump cover is usually opened by forcibly prying it open with a hammer, and the disassembly is time-consuming and laborious. At the same time, the violent disassembly will cause deformation and damage to individual parts. In addition, the existing pump blades are not easy to disassemble quickly, and the rotor pump cannot be quickly restored to work.

[0004] In addition, the existing sealing structure between the rotating shaft and the pump head is usually a single, fixed design that cannot be adjusted or changed, and has poor applicability. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, the utility model provides a quickly detachable rotor pump, which is equipped with an external shaft sealing assembly, and has sealing assemblies of different structures that can be replaced according to different situational needs; and an end cover that is installed in conjunction with a quick-release assembly to facilitate cleaning of the inside of the pump head and replacement of the rotor.

[0006] The quickly detachable rotor pump comprises a pump head and a pump body, an end cover is arranged on the side of the pump head away from the pump body, a cavity for accommodating the rotor and a feed port and a discharge port connected to the cavity are arranged inside the pump head, and the pump head is detachably connected to the end cover through a quick-release assembly; a rotating shaft is arranged inside the pump body to be assembled with the rotor, and the rotor comprises an iron core and fluororubber coated outside the iron core; a sealing assembly is arranged between the rotating shaft and the pump head, and the sealing assembly is placed outside the pump body.

[0007] Furthermore, the sealing assembly adopts a first sealing group, including a sealing seat embedded between the pump head and the rotating shaft, the sealing seat is fastened to the side of the pump head away from the end cover by a fastener, and a sealing ring is embedded between the annular end surface of the sealing seat and the pump head and the rotating shaft.

[0008] Furthermore, the sealing assembly adopts a second sealing group, including a stationary ring seat and a dynamic ring seat, the stationary ring seat is embedded between the pump head and the rotating shaft, and is fixed with the pump head; the dynamic ring seat is arranged on the rotating shaft, and is fixed with the rotating shaft; the stationary ring seal is embedded at the rear end of the stationary ring seat, and the dynamic ring seal is embedded at the front end of the dynamic ring seat, and the end faces of the dynamic ring seal and the stationary ring seal are in contact with each other.

[0009] Furthermore, a static ring sealing ring is arranged between the static ring seat and the pump head; and a dynamic ring sealing ring is arranged between the dynamic ring seat and the rotating shaft.

[0010] Furthermore, the rotor includes an active rotor and a driven rotor, the shaft includes an active shaft and a driven shaft, the active rotor is driven by the active shaft, the driven rotor is driven by the driven shaft, and the end of the active shaft away from the pump head passes through the pump body and is connected to the output shaft of the motor.

[0011] Furthermore, a first sealing group or a second sealing group is arranged between the driving rotating shaft and the pump head; and a first sealing group or a second sealing group is arranged between the driven rotating shaft and the pump head.

[0012] Furthermore, the quick-release assembly includes a screw and a hand-tightening nut. The screw is synchronously inserted into the pump head and the end cover, one end of the screw is threadedly engaged with the threaded hole provided on the pump head, and the other end is locked with the fastening hole on the end cover through the hand-tightening nut.

[0013] Furthermore, the screw rods and hand nuts are provided in four groups, which are arranged on the four corners corresponding to the end cover and the pump head.

[0014] Furthermore, the iron core is a three-leaf structure, and the fluororubber is a three-leaf structure corresponding to the iron core.

[0015] Furthermore, a clamping groove is provided at the end of each blade of the iron core, and is clamped and fixed with a clamping piece on the fluororubber.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] (1) The pump head and the end cover of the present application are installed by means of a quick-install assembly, which not only enables quick disassembly and assembly of the pump head, but also facilitates the cleaning and replacement of the internal rotor, thereby improving the cleaning efficiency and cleanliness.

[0018] (2) The sealing component between the rotating shaft and the pump head of the present application adopts an external structure. Compared with the existing single sealing structure, it is not only convenient to replace the sealing component after wear, but also can choose to use the first sealing group or the second sealing group (mechanical seal) according to different scene requirements.

[0019] (3) The rotor of the present application adopts an embedded combination of an iron core and fluororubber and the iron core, which not only ensures the stirring strength of the rotor, but also enhances the corrosion resistance of the rotor and prolongs the service life of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the structural schematic diagrams of the rotor pump of the utility model;

[0021] Figure 2 This is the second structural schematic diagram of the rotor pump of the utility model;

[0022] Figure 3 This is an exploded view of the rotor pump of the utility model;

[0023] Figure 4 This is an internal cross-sectional view of the pump head of the utility model;

[0024] Figure 5 This is one of the internal cross-sectional views of the rotor pump of the utility model;

[0025] Figure 6 This is the second internal cross-sectional view of the rotor pump of the utility model;

[0026] Figure 7 For this utility model Figure 6 Enlarged view of point A in the middle;

[0027] Figure 8 For this utility model Figure 6 Enlarged view of point B in the middle.

[0028] In the figure: 1-pump head, 11-threaded hole, 2-pump body, 3-end cover, 31-fastening hole, 4-cavity, 5-rotor, 51-iron core, 52-fluororubber, 53-active rotor, 54-driven rotor, 6-rotating shaft, 61-active rotating shaft, 62-driven rotating shaft, 7-quick-release assembly, 71-screw, 72-hand-tightening nut, 8-sealing assembly, 81-sealing seat, 82-sealing ring, 83-static ring seat, 84-dynamic ring seat, 85-static ring seal, 86-dynamic ring seal, 87-static ring sealing ring, 88-dynamic ring sealing ring. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the present invention is further described below in conjunction with the accompanying drawings.

[0030] like Figure 1-Figure 8As shown, a quickly detachable rotor pump includes a pump head 1 and a pump body 2. An end cover 3 is provided on the side of the pump head 1 away from the pump body 2. A cavity 4 for accommodating a rotor 5 and a feed port and a discharge port connected to the cavity 4 are provided in the pump head 1. The pump head 1 is detachably connected to the end cover 3 through a quick assembly 7. A rotating shaft 6 is provided in the pump body 2 to assemble with the rotor 5. The rotor 5 includes an iron core 51 and fluororubber 52 coated on the outside of the iron core 51. A sealing assembly 8 is provided between the rotating shaft 6 and the pump head 1, and the sealing assembly 8 is placed outside the pump body 2. Among them, the rotor 5 includes an active rotor 53 and a driven rotor 54. The rotating shaft 6 includes an active rotating shaft 61 and a driven rotating shaft 62. The active rotor 53 is driven by the active rotating shaft 61, and the driven rotor 54 is driven by the driven rotating shaft 62. The end of the active rotating shaft 61 away from the pump head 1 passes through the pump body 2 and is connected to the output shaft of the motor.

[0031] Continue reading Figure 5-Figure 8 It can be seen that the sealing assembly 8 includes two sealing structures, namely the first sealing group and the second sealing group. The first sealing group includes a sealing seat 81 embedded between the pump head 1 and the rotating shaft 6. The sealing seat 81 is fastened with a fastener (preferably a bolt) on the side of the pump head 1 away from the end cover 3, and a sealing ring 82 is embedded between the annular end surface of the sealing seat 81 and the pump head 1 and the rotating shaft 6. The second sealing group includes a stationary ring seat 83 and a dynamic ring seat 84. The stationary ring seat 83 is embedded between the pump head 1 and the rotating shaft 6 and is fixed with the pump head 1; the dynamic ring seat 84 is arranged on the rotating shaft 6 and is fixed with the rotating shaft 6; the rear end of the stationary ring seat 83 is inlaid with a stationary ring seal 85, and the front end of the dynamic ring seat 84 is inlaid with a dynamic ring seal 86, and the end faces of the dynamic ring seal 86 and the stationary ring seal 85 are in contact with each other. A stationary ring seal 87 is arranged between the stationary ring seat 83 and the pump head 1; and a dynamic ring seal 88 is arranged between the dynamic ring seat 84 and the rotating shaft 6.

[0032] It can be understood that the external sealing assembly is not only easy to disassemble and replace after wear, but also helps users choose different sealing structures according to different usage scenarios. The structure of the first sealing group is simpler than that of the second sealing group. The cost of the second sealing group (mechanical seal) is higher than that of the first sealing group. If the viscosity of the fluid in the rotor pump is high, the first sealing group can be selected for sealing. If the fluid is easy to leak, the second sealing group can be selected for sealing. Compared with the existing single sealing structure, the practicality of this application is stronger.

[0033] Therefore, the first sealing group or the second sealing group can be selected to seal between the active rotating shaft 61 and the pump head 1; the first sealing group or the second sealing group can be selected to seal between the driven rotating shaft 62 and the pump head 1. In the figure of this embodiment, the first sealing group is used to seal between the active rotating shaft 61 and the pump head 1, and the second sealing group is used to seal between the driven rotating shaft 62 and the pump head 1.

[0034] The quick-release assembly 7 includes a screw 71 and a hand-tightening nut 72. The screw 71 is synchronously inserted into the pump head 1 and the end cover 3. One end of the screw 71 is threadedly engaged with the threaded hole 11 provided on the pump head 1, and the other end is locked with the fastening hole 31 on the end cover 3 through the hand-tightening nut 72. In this embodiment, four groups of screws 71 and hand-tightening nuts 72 are provided, which are respectively provided on the four corners corresponding to the end cover 3 and the pump head 1. The design of the quick-release assembly 7 can not only realize the rapid disassembly and assembly of the pump head, but also facilitate the cleaning of the inside of the pump chamber 4 and the cleaning and replacement of the rotor 5, thereby improving the cleaning efficiency and cleanliness of the rotor pump.

[0035] In this embodiment, the iron core 51 of the rotor 5 is designed as a three-leaf structure, and the fluororubber 52 is a three-leaf structure corresponding to the iron core 51. In order to ensure that the iron core 51 and the fluororubber 52 are more firmly embedded, a clamping groove is provided at the end of each blade of the iron core 51, which is clamped with the clamp on the fluororubber 52. The rotor 5 of this structure not only ensures the stirring strength, but also enhances the corrosion resistance of the rotor 5 and prolongs the service life of the rotor 5.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A quickly detachable rotor pump, comprising a pump head (1) and a pump body (2), wherein an end cover (3) is arranged on a side of the pump head (1) away from the pump body (2), and a cavity (4) for accommodating a rotor (5) and a feed inlet and a discharge inlet communicated with the cavity (4) are arranged in the pump head (1), characterized in that: The pump head (1) is detachably connected to the end cover (3) via a quick-release assembly (7); a rotating shaft (6) is arranged inside the pump body (2) and assembled with the rotor (5); the rotor (5) comprises an iron core (51) and fluororubber (52) covering the outside of the iron core (51); a sealing assembly (8) is arranged between the rotating shaft (6) and the pump head (1), and the sealing assembly (8) is placed outside the pump body (2).

2. A quickly detachable rotor pump according to claim 1, characterized in that: The sealing assembly (8) adopts a first sealing group, comprising a sealing seat (81) embedded between the pump head (1) and the rotating shaft (6), the sealing seat (81) and the side of the pump head (1) away from the end cover (3) are fastened by a fastener, and a sealing ring (82) is embedded between the annular end surface of the sealing seat (81) and the pump head (1) and the rotating shaft (6).

3. A quickly detachable rotor pump according to claim 2, characterized in that: The sealing assembly (8) adopts a second sealing group, comprising a stationary ring seat (83) and a dynamic ring seat (84); the stationary ring seat (83) is embedded between the pump head (1) and the rotating shaft (6), and is fixed to the pump head (1); the dynamic ring seat (84) is arranged on the rotating shaft (6), and is fixed to the rotating shaft (6); the stationary ring seal (85) is embedded at the rear end of the stationary ring seat (83), and the dynamic ring seal (86) is embedded at the front end of the dynamic ring seat (84); the end faces of the dynamic ring seal (86) and the stationary ring seal (85) are in contact with each other.

4. A quickly detachable rotor pump according to claim 3, characterized in that: A stationary ring sealing ring (87) is arranged between the stationary ring seat (83) and the pump head (1); and a dynamic ring sealing ring (88) is arranged between the dynamic ring seat (84) and the rotating shaft (6).

5. A quickly detachable rotor pump according to claim 4, characterized in that: The rotor (5) comprises a driving rotor (53) and a driven rotor (54); the rotating shaft (6) comprises a driving rotating shaft (61) and a driven rotating shaft (62); the driving rotor (53) is driven by the driving rotating shaft (61); the driven rotor (54) is driven by the driven rotating shaft (62); an end of the driving rotating shaft (61) away from the pump head (1) passes through the pump body (2) and is connected to an output shaft of the motor.

6. A quickly detachable rotor pump according to claim 5, characterized in that: A first sealing group or a second sealing group is provided between the driving rotating shaft (61) and the pump head (1); and a first sealing group or a second sealing group is provided between the driven rotating shaft (62) and the pump head (1).

7. A quickly detachable rotor pump according to any one of claims 1 to 6, characterized in that: The quick-install assembly (7) comprises a screw (71) and a hand-tightening nut (72). The screw (71) is synchronously inserted into the pump head (1) and the end cover (3). One end of the screw (71) is threadedly engaged with a threaded hole (11) provided on the pump head (1), and the other end is engaged and locked with a fastening hole (31) on the end cover (3) via the hand-tightening nut (72).

8. A quickly detachable rotor pump according to claim 7, characterized in that: The screw rod (71) and the hand-tightening nut (72) are provided in four groups, which are arranged at four corners corresponding to the end cover (3) and the pump head (1).

9. A quickly detachable rotor pump according to any one of claims 1 to 6, characterized in that: The iron core (51) is a three-leaf structure, and the fluororubber (52) is a three-leaf structure corresponding to the iron core (51).

10. A quickly detachable rotor pump according to claim 9, characterized in that: A clamping groove is provided at the end of each blade of the iron core (51) and is engaged and fixed with a clamping piece on the fluororubber (52).

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