Novel roots pump rotor

Abstract

The utility model discloses a novel roots pump rotor, which relates to the field of roots pumps, and comprises a driving shaft penetrating through a rotor main body, and further comprises a fixed baffle disc fixedly sleeved on the outer side of the driving shaft, four groups of outer connecting plates are fixedly connected on the outer side of the fixed baffle disc, and inserting rods are fixedly connected on the four groups of outer connecting plates. Four first connecting rods are fixedly connected to the outer side of the driving shaft, four first connecting grooves are formed in the outer side face of the driving shaft, a communicating notch is formed in the middle of the rotor body in a penetrating mode, and four second connecting rods are fixedly connected to the inner side of the communicating notch. The utility model has the advantages that the connection tightness of the rotor main body and the driving shaft can be improved to prevent the rotor main body and the driving shaft from shaking, the quick assembly function of the rotor main body and the driving shaft is realized, the disassembly and assembly efficiency of the rotor is obviously improved, the axial separation between the rotor main body and the driving shaft in long-term rotation can be avoided, and the service life of the rotor is prolonged. And the installation stability of the rotor main body is ensured.

Description

Technical Field

[0001] This utility model relates to the field of Roots pumps, and in particular to a novel Roots pump rotor. Background Technology

[0002] A Roots pump is a widely used mechanical device in vacuum technology, particularly suitable for applications requiring high flow rates, high pumping speeds, and low vacuum levels. The rotor of the Roots pump is its core component. Its principle is based on two meshing rotors that, through relative rotation, transport gas from the pump inlet to the outlet, thereby achieving gas extraction and compression.

[0003] Patent CN221838539U discloses a Roots pump rotor and a Roots pump with dust collection function. The dust guide groove on the rotor body can guide the dust from the front end of the rotor body to the rear end, and then collect it into the dust collection box on the side of the pump chamber of the Roots pump, thereby realizing the collection of dust and avoiding a large amount of dust sticking to the surface of the Roots pump rotor, which would cause the rotor to jam and reduce the failure rate of the Roots pump. However, when the Roots pump rotor is in use, the installation between it and the drive shaft is not tight enough, which makes it easy for the rotor to shake with the drive shaft after long-term operation, and it is also inconvenient to quickly disassemble and assemble the rotor and the drive shaft. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a new type of Roots pump rotor. When the existing Roots pump rotor is in use, the installation between it and the drive shaft is not tight enough, which makes it easy for the rotor to shake with the drive shaft after long-term operation, and it is also inconvenient to quickly disassemble and assemble the rotor and the drive shaft.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is a novel Roots pump rotor, including a drive shaft that runs through the rotor body, and a fixed baffle that is fixedly sleeved on the outside of the drive shaft. Four sets of external connecting plates are fixedly connected to the outside of the fixed baffle, and each of the four sets of external connecting plates is fixedly connected with a plug rod.

[0006] Four sets of first connecting rods are fixedly connected to the outer side of the drive shaft, and four sets of first connecting slots are opened on the outer side of the drive shaft. A through slot is opened in the middle of the rotor body. Four sets of second connecting rods are fixedly connected to the inner side of the through slot, and four sets of second connecting slots are opened on the inner side of the through slot.

[0007] As a further embodiment of this utility model: four sets of slots are equally spaced at one end of the rotor body near the fixed baffle, the four sets of external connecting plates are equally spaced on the outside of the fixed baffle, and the four sets of insert rods respectively fit into the four sets of slots.

[0008] As a further embodiment of this utility model: four sets of first connecting rods and four sets of first connecting slots are equally spaced on the rotor body, and the four sets of first connecting rods and four sets of first connecting slots are staggered; four sets of second connecting rods and four sets of second connecting slots are equally spaced on the drive shaft, and the four sets of second connecting rods and four sets of second connecting slots are staggered.

[0009] As a further embodiment of this utility model: the four sets of first connecting rods are respectively located inside the four sets of second connecting grooves, and the four sets of second connecting rods are respectively located inside the four sets of first connecting grooves.

[0010] As a further embodiment of this utility model: a ring retaining plate is provided at the end of the rotor body away from the fixed retaining plate, an internally threaded ring plate is fixedly connected to the ring retaining plate, a pressure sleeve is sleeved at the end of the drive shaft, and a threaded rod is fixedly connected to the inner end of the pressure sleeve.

[0011] As a further embodiment of this utility model: the rotor body is provided with an annular thread groove at one end away from the fixed baffle, and the internal threaded ring plate is threadedly connected to the rotor body through the annular thread groove.

[0012] As a further embodiment of this utility model: one end of the drive shaft is provided with a threaded groove, and the threaded rod is threadedly connected to the drive shaft through the threaded groove.

[0013] Compared with the prior art, the beneficial effects of this utility model include: by using four sets of first connecting rods and four sets of second connecting slots in conjunction with four sets of second connecting rods and four sets of first connecting slots, the rotor body is slidably sleeved on the outside of the drive shaft until the rotor body is in contact with the fixed baffle. At this time, the inserts on the four sets of outer connecting plates are respectively located on the inside of the four sets of slots, and the ring baffle is locked on the other end of the rotor body. This can improve the tightness of the connection between the rotor body and the drive shaft, prevent the two from shaking, and realize the function of quick assembly of the rotor body and the drive shaft, significantly improving the efficiency of rotor assembly and disassembly.

[0014] Compared with the prior art, the beneficial effects of this utility model include: when the rotor body is slidably sleeved on the outside of the drive shaft, the threaded engagement of the internal threaded ring plate and the ring threaded groove makes the ring retainer plate and the end of the rotor body fit tightly together. Then, the threaded engagement of the threaded rod and the threaded column groove makes the pressure sleeve slidably sleeved on the outside of the drive shaft until the pressure sleeve and the ring retainer plate fit tightly together. This can prevent the rotor body from axially separating from the drive shaft during long-term rotation and ensure the installation stability of the rotor body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a novel Roots pump rotor in an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of the rotor body in an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure of the drive shaft in an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure of the ring baffle in an embodiment of this utility model.

[0019] In the figure: 1. Rotor body; 2. Drive shaft; 3. Fixed baffle; 4. Outer connecting plate; 5. Insert rod; 6. Slot; 7. Connecting slot; 8. First connecting rod; 9. First connecting slot; 10. Second connecting slot; 11. Second connecting rod; 12. Ring baffle; 13. Internal threaded ring plate; 14. Ring threaded groove; 15. Pressing sleeve; 16. Threaded rod; 17. Threaded column groove. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] Example 1, please refer to Figures 1-4 A novel Roots pump rotor includes a drive shaft 2 that penetrates the rotor body 1, and a fixed baffle 3 that is fixedly sleeved on the outside of the drive shaft 2. Four sets of external connecting plates 4 are fixedly connected to the outside of the fixed baffle 3, and each of the four sets of external connecting plates 4 is fixedly connected with a plug rod 5. Four sets of first connecting rods 8 are fixedly connected to the outside of the drive shaft 2, and four sets of first connecting grooves 9 are opened on the outer side of the drive shaft 2. A through slot 7 is opened through the middle of the rotor body 1, and four sets of second connecting rods 11 are fixedly connected to the inner side of the through slot 7. Four sets of second connecting grooves 10 are opened on the inner side of the through slot 7.

[0022] The rotor body 1 has four sets of slots 6 at equal intervals at one end near the fixed baffle 3. Four sets of external connecting plates 4 are distributed at equal intervals on the outside of the fixed baffle 3, and four sets of insert rods 5 respectively fit into the four sets of slots 6.

[0023] In this embodiment, the rotor body 1 is fitted to the fixed baffle 3 by the cooperation of four sets of plug rods 5 and four sets of slots 6.

[0024] Four sets of first connecting rods 8 and four sets of first connecting slots 9 are equally spaced on the rotor body 1, and the four sets of first connecting rods 8 and four sets of first connecting slots 9 are staggered. Four sets of second connecting rods 11 and four sets of second connecting slots 10 are equally spaced on the drive shaft 2, and the four sets of second connecting rods 11 and four sets of second connecting slots 10 are staggered. The four sets of first connecting rods 8 are located inside the four sets of second connecting slots 10, and the four sets of second connecting rods 11 are located inside the four sets of first connecting slots 9.

[0025] In this embodiment, four sets of first connecting rods 8 and four sets of second connecting slots 10 are used in conjunction with four sets of second connecting rods 11 and four sets of first connecting slots 9 so that the rotor body 1 can be connected to the drive shaft 2.

[0026] Specifically, by using four sets of first connecting rods 8 and four sets of second connecting slots 10 in conjunction with four sets of second connecting rods 11 and four sets of first connecting slots 9, the rotor body 1 is slidably sleeved on the outside of the drive shaft 2 until the rotor body 1 is in contact with the fixed baffle 3. At this time, the insert rods 5 on the four sets of outer connecting plates 4 are respectively located inside the four sets of slots 6, and the ring baffle 12 is snapped into the other end of the rotor body 1. This can improve the tightness of the connection between the rotor body 1 and the drive shaft 2, prevent the two from shaking, and realize the function of quick assembly of the rotor body 1 and the drive shaft 2, which significantly improves the efficiency of rotor assembly and disassembly.

[0027] Example 2, please refer to Figures 1-4 A novel Roots pump rotor has a ring baffle 12 at the end of the rotor body 1 away from the fixed baffle 3. An internally threaded ring plate 13 is fixedly connected to the ring baffle 12. A pressure sleeve 15 is sleeved on the end of the drive shaft 2. A threaded rod 16 is fixedly connected to the inner end of the pressure sleeve 15.

[0028] The rotor body 1 has an annular thread groove 14 at the end away from the fixed baffle 3, and the internal thread ring plate 13 is threadedly connected to the rotor body 1 through the annular thread groove 14.

[0029] In this embodiment, the internal threaded ring plate 13 and the ring threaded groove 14 are used to make the ring retainer 12 engage with the rotor body 1.

[0030] One end of the drive shaft 2 is provided with a threaded groove 17, and the threaded rod 16 is threadedly connected to the drive shaft 2 through the threaded groove 17.

[0031] In this embodiment, the threaded rod 16 and the threaded groove 17 are used to engage the pressure sleeve 15 with the drive shaft 2.

[0032] Specifically, when the rotor body 1 is slidably sleeved on the outside of the drive shaft 2, the threaded engagement of the internal threaded ring plate 13 and the ring threaded groove 14 makes the ring retainer 12 fit tightly against the end of the rotor body 1. Then, the threaded engagement of the threaded rod 16 and the threaded column groove 17 makes the pressure sleeve 15 slidely sleeved on the outside of the drive shaft 2 until the pressure sleeve 15 fits tightly against the ring retainer 12. This can prevent the rotor body 1 from axially separating from the drive shaft 2 during long-term rotation, thus ensuring the installation stability of the rotor body 1.

[0033] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A novel Roots pump rotor, comprising a drive shaft (2) penetrating the rotor body (1), characterized in that: It also includes a fixed baffle (3) that is fixedly sleeved on the outside of the drive shaft (2). Four sets of external connecting plates (4) are fixedly connected to the outside of the fixed baffle (3). Insert rods (5) are fixedly connected to the four sets of external connecting plates (4). Four sets of first connecting rods (8) are fixedly connected to the outer side of the drive shaft (2), and four sets of first connecting grooves (9) are opened on the outer side of the drive shaft (2). A through slot (7) is opened through the middle position of the rotor body (1). Four sets of second connecting rods (11) are fixedly connected to the inner side of the through slot (7), and four sets of second connecting grooves (10) are opened on the inner side of the through slot (7).

2. The novel Roots pump rotor according to claim 1, characterized in that: The rotor body (1) has four sets of slots (6) at equal intervals at one end near the fixed baffle (3). The four sets of external connecting plates (4) are distributed at equal intervals on the outside of the fixed baffle (3), and the four sets of insert rods (5) are respectively matched with the four sets of slots (6).

3. A novel Roots pump rotor according to claim 1, characterized in that: Four sets of first connecting rods (8) and four sets of first connecting slots (9) are equally spaced on the rotor body (1), and the four sets of first connecting rods (8) and four sets of first connecting slots (9) are staggered. Four sets of second connecting rods (11) and four sets of second connecting slots (10) are equally spaced on the drive shaft (2), and the four sets of second connecting rods (11) and four sets of second connecting slots (10) are staggered.

4. A novel Roots pump rotor according to claim 3, characterized in that: The four sets of first connecting rods (8) are located inside the four sets of second connecting grooves (10), and the four sets of second connecting rods (11) are located inside the four sets of first connecting grooves (9).

5. A novel Roots pump rotor according to claim 1, characterized in that: The rotor body (1) is provided with a ring baffle (12) at one end away from the fixed baffle (3). An internal threaded ring plate (13) is fixedly connected to the ring baffle (12). A pressure sleeve (15) is sleeved on the end of the drive shaft (2). A threaded rod (16) is fixedly connected to the inner end of the pressure sleeve (15).

6. A novel Roots pump rotor according to claim 5, characterized in that: The rotor body (1) has an annular thread groove (14) at one end away from the fixed baffle (3), and the internal thread ring plate (13) is threadedly connected to the rotor body (1) through the annular thread groove (14).

7. A novel Roots pump rotor according to claim 5, characterized in that: One end of the drive shaft (2) is provided with a threaded groove (17), and the threaded rod (16) is threadedly connected to the drive shaft (2) through the threaded groove (17).

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