Leak-proof cam rotor pump

Abstract

The utility model relates to the field of rotor pumps, and discloses a leakproof cam rotor pump which comprises a shell assembly, a rotating shaft, a cam, a first leakproof assembly and a second leakproof assembly, a containing cavity used for containing a rotor and fluid media is arranged in the shell assembly, and the rotating shaft is connected with and drives the cam to rotate. The rotating shaft is sleeved with the first anti-leakage assembly, the first anti-leakage assembly is contained in the shell assembly, the first anti-leakage assembly is used for preventing leakage between the rotating shaft and the containing cavity, and the second anti-leakage assembly is detachably arranged at the bottom of the shell assembly and used for preventing leakage media from dropping to the ground. According to the anti-leakage cam rotor pump, the gap between the rotating shaft and the containing cavity is blocked through the first anti-leakage assembly, leakage is not prone to occurring, the second anti-leakage assembly is further connected to the bottom of the shell assembly in a bearing mode, fluid media are prevented from dripping on the ground to pollute the environment, and recovery is convenient.

Description

Technical Field

[0001] This utility model relates to the field of rotor pump technology, and more specifically, to a leak-proof cam rotor pump. Background Technology

[0002] Cam rotor pumps are among the most advanced fluid equipment in the world. Their rotors are fully rubber-coated, making them highly wear-resistant. The high-precision clearance fit between the rotor and the casing provides strong self-priming force and high lift. They can transport various viscous media or media containing particulate matter and are suitable for various complex fluid media. The working principle of cam rotor pumps mainly relies on the suction force generated at the inlet by two synchronously counter-rotating rotors during rotation, thereby drawing in the material to be transported.

[0003] There are gaps between the cam, shaft, and housing, which are prone to leakage. Moreover, after the machine has been working for a long time, the vibration between the parts will cause wear, which will increase the gaps and leak fluid media. This not only causes the loss of the materials to be transported and increases costs, but also dirtys the ground working environment and creates safety hazards. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model first provides a leak-proof cam rotor pump, comprising a housing assembly, a rotating shaft, a cam, a first leak-proof component, and a second leak-proof component. The housing assembly has a accommodating cavity for accommodating the rotor and the fluid medium. The rotating shaft connects to and drives the cam to rotate. The first leak-proof component is sleeved on the rotating shaft and housed within the housing assembly, and is used to prevent leakage between the rotating shaft and the accommodating cavity. The second leak-proof component is detachably disposed at the bottom of the housing assembly, and is used to prevent leaked medium from dripping onto the ground.

[0005] Optionally, the housing assembly includes a mounting base, a connecting base, and an end cap. The end cap and the mounting base are fixedly connected to the front and rear ends of the connecting base, respectively. The accommodating cavity is formed by the connecting base and the end cap being closed together. The rotating shaft passes through both the mounting base and the connecting base and is rotatably connected to both the mounting base and the connecting base.

[0006] Optionally, the connecting seat is provided with an installation groove, and the first anti-leakage component is accommodated in the installation groove. The first anti-leakage component includes an oil seal seat, a first sealing ring, and an oil seal ring. The oil seal ring is sleeved on the rotating shaft, the first sealing ring is sleeved on the oil seal ring, and the oil seal seat is sleeved on the first sealing ring.

[0007] Optionally, the oil seal ring is provided with a guide surface, and a cavity for clamping the first sealing ring is formed between the guide surface and the inner wall of the oil seal seat; there are two oil seal seats, two first sealing rings, and two oil seal rings, with the guide surfaces on the two oil seal rings arranged opposite to each other.

[0008] Optionally, the front end face of the connector is provided with an annular flange, the end cover is provided with an annular connecting groove, and an annular second sealing ring is fitted on the annular flange. When the annular flange and the annular connecting groove are inserted, the inner and outer sides of the second sealing ring respectively abut against the annular flange and the annular connecting groove.

[0009] Optionally, the second leak-proof component includes a receiving seat with a buckle and a mounting base with a slot. The bottom of the buckle and the slot engage with each other. The receiving seat has a receiving groove for receiving leaked fluid media.

[0010] Optionally, the bottom gap between the connecting seat and the mounting seat is a first gap, and the bottom gap between the connecting seat and the end cap is a second gap. The receiving seat is located below both the first gap and the second gap to prevent leakage from the first gap and the second gap.

[0011] Optionally, there are two buckles, which are respectively located on the left and right sidewalls of the receiving seat.

[0012] Optionally, the receiving seat is provided with a clearance opening, which is used to avoid the bottom of the connecting seat and the bottom of the end cap.

[0013] Optionally, a bearing is installed in the mounting base, and the bearing is sleeved on the rotating shaft.

[0014] Compared with the prior art, the leak-proof cam rotor pump of this utility model seals the gap between the shaft and the accommodating cavity by setting a first leak-proof component, making it less prone to leakage. By setting a second leak-proof component, it is further supported at the bottom of the shell assembly to prevent the fluid medium from dripping onto the ground and polluting the environment, and facilitates recycling. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the leak-proof cam rotor pump according to an embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of the leak-proof cam rotor pump according to an embodiment of the present invention;

[0017] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0018] Figure 4 This is a front view of the connecting seat and the cam according to an embodiment of the present utility model;

[0019] Figure 5 This is a structural diagram of the end cap according to an embodiment of the present utility model;

[0020] Figure 6 This is a structural diagram of the receiving seat according to an embodiment of the present utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Mounting base; 11. Slot; 2. Connecting base; 21. Annular flange; 22. Second sealing ring; 23. Inlet; 24. Outlet; 3. End cap; 31. Annular connecting groove; 4. Receiving cavity; 5. Rotating shaft; 6. Cam; 7. First anti-leakage component; 71. Oil seal seat; 72. First sealing ring; 73. Oil seal ring; 731. Guide surface; 8. Receiver seat; 81. Snap-fit; 82. Receiver groove; 83. Clearance opening; 9. Bearing. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] The accompanying drawings of the embodiments of this utility model provide a coordinate system XYZ, where the positive direction of the X-axis represents the left and the negative direction of the X-axis represents the right, the positive direction of the Y-axis represents the front and the negative direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top and the negative direction of the Z-axis represents the bottom.

[0025] This utility model embodiment provides a leak-proof cam rotor pump, combined with Figures 1 to 6 As shown, the device includes a housing assembly, a rotating shaft 5, a cam 6, a first leak-proof component 7, and a second leak-proof component. The housing assembly has a accommodating cavity 4 for accommodating the rotor and the fluid medium. The rotating shaft 5 is connected to and drives the cam 6 to rotate. The first leak-proof component 7 is sleeved on the rotating shaft 5 and housed within the housing assembly. The first leak-proof component 7 is used to prevent leakage between the rotating shaft 5 and the accommodating cavity 4. The second leak-proof component is detachably located at the bottom of the housing assembly. The second leak-proof component is used to prevent leaked medium from dripping onto the ground.

[0026] like Figure 4 As shown, in this embodiment, there are two cams 6 that are interconnected and drive each other. The cam 6 rotor pump is existing technology, and its working principle will not be described in detail here.

[0027] The leak-proof cam rotor pump of this utility model seals the gap between the rotating shaft 5 and the accommodating cavity 4 by setting the first leak-proof component 7, making it less prone to leakage. The second leak-proof component is further supported at the bottom of the shell assembly to prevent the fluid medium from dripping onto the ground and polluting the environment, and facilitates recycling.

[0028] Optionally, the housing assembly includes a mounting base 1, a connecting base 2, and an end cap 3. The end cap 3 and the mounting base 1 are fixedly connected to the front and rear ends of the connecting base 2, respectively. The accommodating cavity 4 is formed by the connecting base 2 and the end cap 3 covering each other. The rotating shaft 5 passes through both the mounting base 1 and the connecting base 2 and is rotatably connected to both the mounting base 1 and the connecting base 2.

[0029] like Figure 1 and 2 As shown, in this embodiment, the left and right ends of the connecting seat 2 are respectively provided with an inlet 23 and an outlet 24. Both the inlet 23 and the outlet 24 are connected to the accommodating cavity 4 to transport fluid media. The mounting seat 1, the connecting seat 2, and the end cover 3 are fixedly connected by bolts.

[0030] Optionally, the connecting seat 2 is provided with an installation groove, and the first anti-leakage component 7 is accommodated in the installation groove. The first anti-leakage component 7 includes an oil seal seat 71, a first sealing ring 72, and an oil seal ring 73. The oil seal ring 73 is sleeved on the rotating shaft 5, the first sealing ring 72 is sleeved on the oil seal ring 73, and the oil seal seat 71 is sleeved on the first sealing ring 72.

[0031] like Figure 2 and 3 As shown, in this embodiment, the oil seal seat 71 is installed in the mounting groove, which not only prevents it from falling off and facilitates positioning and installation, but also prevents the fluid medium from leaking from the rotation gap between the rotating shaft 5 and the accommodating cavity 4.

[0032] Optionally, the oil seal ring 73 is provided with a guide surface 731, and a cavity for clamping the first sealing ring 72 is formed between the guide surface 731 and the inner wall of the oil seal seat 71; there are two oil seal seats 71, two first sealing rings 72 and two oil seal rings 73, and the guide surfaces 731 on the two oil seal rings 73 are arranged opposite to each other.

[0033] like Figure 3 As shown, in this embodiment, the two guide surfaces 731 restrict the movement of the rotating shaft 5 from the front and rear directions respectively, preventing the rotating shaft 5 from axially shifting during operation. At the same time, the sealing effect between the rotating shaft 5 and the accommodating cavity 4 is enhanced, resulting in a better self-priming effect when the cam 6 rotates within the accommodating cavity 4.

[0034] Optionally, the front end face of the connecting seat 2 is provided with an annular flange 21, the end cover 3 is provided with an annular connecting groove 31, and an annular second sealing ring 22 is fitted on the annular flange 21. When the annular flange 21 and the annular connecting groove 31 are inserted, the inner and outer sides of the second sealing ring 22 abut against the annular flange 21 and the annular connecting groove 31 respectively.

[0035] like Figure 4 and 5 As shown, in this embodiment, the second sealing ring 22 increases the sealing between the connecting seat 2 and the end cap 3, preventing fluid medium from flowing out from the gap between the connecting seat 2 and the end cap 3.

[0036] Optionally, the second leak-proof component includes a receiving seat 8, which is provided with a buckle 81, and the mounting seat 1 is provided with a slot 11. The bottom of the buckle 81 and the slot 11 are engaged with each other. The receiving seat 8 is provided with a receiving groove 82, which is used to receive leaked fluid media.

[0037] Optionally, the bottom gap between the connecting seat 2 and the mounting seat 1 is the first gap, and the bottom gap between the connecting seat 2 and the end cap 3 is the second gap. The receiving seat 8 is located below both the first gap and the second gap to prevent leakage from the first gap and the second gap.

[0038] Optionally, there are two buckles 81, which are respectively provided on the left and right side walls of the receiving seat 8.

[0039] Optionally, the receiving seat 8 is provided with a clearance opening 83, which is used to avoid the bottom of the connecting seat 2 and the bottom of the end cap 3.

[0040] like Figure 6 As shown, in this embodiment, the receiving seat 8 can be made of transparent plastic, allowing the user to observe the receiving status within the receiving groove 82 from the outside. When the receiving groove 82 is full, the buckle 81 can be pried open, causing a slight elastic deformation, thereby disassembling the receiving seat 8 and recovering the fluid medium within the receiving groove 82. Simultaneously, the receiving seat 8 abuts against the lower ends of the connecting seat 2 and the end cap 3 through the clearance opening 83, further enhancing the sealing effect.

[0041] Optionally, a bearing 9 is installed in the mounting base 1, and the bearing 9 is sleeved on the rotating shaft 5.

[0042] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0043] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0044] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0046] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A leak-proof cam rotor pump characterized by, The device includes a housing assembly, a rotating shaft (5), a cam (6), a first leak-proof component (7), and a second leak-proof component. The housing assembly has a accommodating cavity (4) for accommodating the rotor and the fluid medium. The rotating shaft (5) is connected to and drives the cam (6) to rotate. The first leak-proof component (7) is sleeved on the rotating shaft (5) and housed within the housing assembly. The first leak-proof component (7) is used to prevent leakage between the rotating shaft (5) and the accommodating cavity (4). The second leak-proof component is detachably located at the bottom of the housing assembly. The second leak-proof component is used to prevent leaked medium from dripping onto the ground.

2. The leak-proof lobe pump of claim 1, wherein, The housing assembly includes a mounting base (1), a connecting base (2), and an end cap (3). The end cap (3) and the mounting base (1) are fixedly connected to the front and rear ends of the connecting base (2), respectively. The accommodating cavity (4) is formed by the connecting base (2) and the end cap (3) covering each other. The rotating shaft (5) passes through the mounting base (1) and the connecting base (2) and is rotatably connected to the mounting base (1) and the connecting base (2).

3. The leak-proof lobe pump of claim 2, wherein, The connecting seat (2) is provided with an installation groove, and the first anti-leakage component (7) is accommodated in the installation groove. The first anti-leakage component (7) includes an oil seal seat (71), a first sealing ring (72), and an oil seal ring (73). The oil seal ring (73) is sleeved on the rotating shaft (5), the first sealing ring (72) is sleeved on the oil seal ring (73), and the oil seal seat (71) is sleeved on the first sealing ring (72).

4. The leak-proof lobe pump of claim 3, wherein, The oil seal ring (73) is provided with a guide surface (731), and a cavity for clamping the first sealing ring (72) is formed between the guide surface (731) and the inner wall of the oil seal seat (71); there are two oil seal seats (71), two first sealing rings (72) and two oil seal rings (73), and the guide surfaces (731) on the two oil seal rings (73) are arranged oppositely.

5. The leak-proof lobe pump of claim 2, wherein, The front end face of the connecting seat (2) is provided with an annular flange (21), and the end cover (3) is provided with an annular connecting groove (31). An annular second sealing ring (22) is fitted on the annular flange (21). When the annular flange (21) and the annular connecting groove (31) are inserted, the inner and outer sides of the second sealing ring (22) respectively abut against the annular flange (21) and the annular connecting groove (31).

6. The leak-proof lobe pump of claim 2, wherein, The second leak-proof component includes a receiving seat (8), a buckle (81) on the receiving seat (8), a slot (11) on the mounting seat (1), the bottom of the buckle (81) and the slot (11) engaging with each other, and a receiving groove (82) on the receiving seat (8) for receiving leaked fluid media.

7. The leakproof lobe pump of claim 6, wherein, The bottom gap between the connecting seat (2) and the mounting seat (1) is the first gap, and the bottom gap between the connecting seat (2) and the end cap (3) is the second gap. The receiving seat (8) is located below both the first gap and the second gap to prevent leakage from the first gap and the second gap.

8. The leak-proof lobe pump of claim 6, wherein, There are two buckles (81) and they are respectively located on the left and right side walls of the receiving seat (8).

9. The leak-proof lobe pump of claim 6, wherein, The receiving seat (8) is provided with a clearance opening (83), which is used to avoid the bottom of the connecting seat (2) and the bottom of the end cap (3).

10. The leak-proof cam rotor pump according to claim 2, characterized in that, The mounting base (1) is equipped with a bearing (9), which is sleeved on the rotating shaft (5).

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