Rotor compression roller assembly of hose pump

Abstract

According to the hose pump rotor compression roller assembly, compression roller shafts are arranged at the two ends of a compression roller, the compression roller shafts and the compression roller are arranged in a concentric mode, an oil storage cavity is formed in the compression roller, oil injection holes are formed in the end faces of the compression roller shafts and / or the compression roller, oil outlet holes are formed in the positions, opposite to a hose, of the peripheral face of the compression roller, and the oil injection holes and the oil outlet holes are both communicated with the interior of the oil storage cavity. When the hose pump is used, a certain amount of lubricating oil can be injected into the oil storage cavity in advance, meanwhile, the lubricating oil can be properly released to the peripheral face of the pressing roller and the rolled pipe face area of the hose through the oil outlet holes, then the stable and reliable lubricating working condition can be achieved in the normal pumping process of the hose pump, and stable operation of equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to a hose pump, in particular to a hose pump rotor pressure roller assembly. Background Art

[0002] A hose pump is a new type of positive displacement pump, primarily consisting of a pump casing, rotor, and hose. Its operating principle is that the rollers on the rotor squeeze and release the hose, causing the fluid to flow in a directional manner within the hose. It can transport a variety of complex media, including those containing solid particles, highly viscous, and corrosive substances. It is widely used in numerous fields, including chemical engineering, environmental protection, food, and medicine.

[0003] The patent document entitled "Hose Pump Rotor" (document number CN106640608A) is the applicant's prior patent application. The technical solution disclosed therein provides a hose pump rotor, which is convenient for adjusting the radial position of the roller so that the degree of squeezing of the hose is appropriate. The main rotating shaft includes a fixedly connected main shaft and a rotor seat. The roller support arm is symmetrically arranged on the rotor seat and the outer end is connected to the roller. The roller shaft core is parallel to the main shaft shaft core. The roller support arm and the rotor seat form a limit fit for radial displacement. The roller support arm and the rotor seat are fixedly connected by a locking component.

[0004] In the existing hose pump technology, when the hose pump rotor rotates, the pressure roller on it will roll and squeeze on the hose. Considering that the surface material of the hose is usually not smooth, the pressure roller and the hose will produce a relative obstruction under the influence of friction, which indirectly increases the energy consumption of the motor. At the same time, the pressure roller and the hose will continue to wear due to friction, affecting the service life of the equipment. In order to improve the above situation, lubricating oil is usually applied to the hose or pressure roller manually to reduce the friction between the pressure roller and the hose. However, in this way, the lubricating oil is exposed to the external environment all at once, and the application position and application amount of the lubricating oil are difficult to control and need to be carried out in the shutdown state. In addition, the lubricating oil dissipates quickly, the equipment consumes a lot of energy and the production efficiency is also seriously affected. In addition, a large amount of oil stains accumulated on the pump casing groove wall, especially the bottom of the groove, not only do not contribute to lubrication, but increase the cleaning workload. Summary of the Invention

[0005] The utility model provides a hose pump rotor pressure roller assembly, which can release an appropriate amount of lubricating oil to the tube surface area of ​​the hose being rolled without stopping the machine, thereby achieving a stable and reliable lubrication working condition during the normal pumping process of the hose pump.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted is: a hose pump rotor pressure roller assembly, wherein pressure roller shafts are provided at both ends of the pressure roller, the pressure roller shaft and the pressure roller are arranged concentrically, an oil storage chamber is provided inside the pressure roller, an oil filling hole is provided on the end face of the pressure roller shaft and / or the pressure roller, and an oil outlet hole is provided on the outer peripheral surface of the pressure roller at a position opposite to the hose, and the oil filling hole and the oil outlet hole are both connected to the interior of the oil storage chamber.

[0007] Compared with the existing technology, the technical effect of the utility model is: by arranging an oil storage chamber inside the pressure roller, a certain amount of lubricating oil can be injected into the oil storage chamber in advance, and at the same time, the lubricating oil can be released in an appropriate amount through the oil outlet hole to the circumference of the pressure roller and the tube surface area of ​​the hose being rolled, thereby achieving stable and reliable lubrication conditions during the normal pumping process of the hose pump, ensuring stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of the utility model;

[0009] Figure 2 It is a structural cross-sectional view of the pressure roller;

[0010] Figure 3 It is a structural schematic diagram of the pressure roller shaft;

[0011] Figure 4 Schematic diagram of the auxiliary oil chamber inside the pressure roller shaft. DETAILED DESCRIPTION

[0012] The following is combined with Figure 1-4 And related content, the utility model is further described in detail:

[0013] A hose pump rotor roller assembly, wherein roller shafts 20 are provided at both ends of the roller 10, the roller shaft 20 and the roller 10 are arranged concentrically, an oil storage chamber 40 is provided inside the roller 10, an oil filling hole 21 is provided on the end face of the roller shaft 20, and an oil outlet hole 11 is provided on the outer peripheral surface of the roller 10 at a position opposite to the hose, and the oil filling hole 21 and the oil outlet hole 11 are both connected to the interior of the oil storage chamber 40.

[0014] In the above scheme, an oil storage chamber 40 is provided inside the pressure roller 10. With the setting of the oil filling hole 21, a certain amount of lubricating oil can be injected into the oil storage chamber 40 in advance using the oil filling hole 21. Since the circumferential surface of the pressure roller 10 is provided with an oil outlet hole 11 and the diameter of the oil outlet hole 11 is relatively small, the lubricating oil can be appropriately released through the oil outlet hole 11 onto the outer circumferential surface of the pressure roller 10 and the area of ​​the tube surface where the hose is rolled, thereby achieving a stable and reliable lubrication condition during the normal pumping process of the hose pump, effectively reducing the heat generated by the friction between the pressure roller 10 and the hose, while improving the heating of the hose and the heating conditions of the pressure roller 10. Therefore, the thermal aging of the hose is effectively alleviated, and the operating conditions of the support bearings of the pressure roller 10 are significantly improved, ensuring the stable operation of the equipment while extending the service life. Compared with the traditional method of manually applying lubricating oil, this method avoids the defect of applying a large amount of lubricating oil at one time, which not only causes some of the lubricating oil to not be utilized, but also increases the workload of cleaning the pump casing.

[0015] It should be noted that the end surface of the pressure roller shaft 20 where the oil filling hole 21 is located is preferably facing the side of the pump housing inspection port, so as to facilitate the injection of lubricating oil into the pressure roller 10.

[0016] As a preferred embodiment, the pressure roller 10 is generally shaped like a short tube or sleeve, and the pressure roller shaft 20 passes through the pressure roller 10 along its core. Bearings 30 and oil seals 50 are arranged concentrically within the port of the pressure roller 10, from the inside out. The bearings 30 provide a rotational fit between the ends of the pressure roller 10 and the pressure roller shaft 20. In this embodiment, the pressure roller shaft 20 can be fixedly connected to the hose pump rotor, and the pressure roller 10 rotates relative to the pressure roller shaft 20. As the hose pump rotor rotates, the pressure roller 10 rolls and squeezes against the hose, achieving material pumping. Furthermore, the oil seal 50 seals the port of the pressure roller 10 and the pressure roller shaft 20, preventing lubricating oil from leaking from the port of the pressure roller 10.

[0017] Further, if Figure 1 As shown, the oil reservoir 40 is formed by the inner circumference of the pressure roller 10, the circumference of the pressure roller shaft 20, and the opposite end surfaces of the two bearings 30. The oil injection hole 21 extends from the end surface of the pressure roller shaft 20 to the middle of the shaft body of the pressure roller shaft 20, and then passes through the oil reservoir 40 from the side of the pressure roller shaft 20.

[0018] In addition, if Figure 1As shown, an auxiliary oil injection hole 22 is provided on the end surface of the pressure roller shaft 20. The distal end of the auxiliary oil injection hole 22 extends into the shaft body of the pressure roller shaft 20 and penetrates the circumference of the pressure roller shaft 20. The outlet of the auxiliary oil injection hole 22 is directed toward the outer end surface of the bearing 30. In this embodiment, lubricating oil can be injected into the auxiliary oil injection hole 22 so that the lubricating oil directly reaches the outer end surface of the bearing 30, thereby lubricating the outer portion of the bearing 30. The inner portion of the bearing 30 can be lubricated by the lubricating oil within the oil reservoir 40. The two interact to effectively lubricate the bearing 30 and ensure stable operation of the bearing 30.

[0019] Combine Figure 1 and Figure 2 As shown, the end of the pressure roller 10 is an expanded stepped hole 12. The bearing 30 and the oil seal 50 are both located in the stepped hole 12, and the outer ring of the bearing 30 is supported on the stepped surface 121 of the stepped hole 12. The stepped surface 121 acts as a limiter to position the bearing 30, ensuring that the bearing 30 is accurately assembled relative to the pressure roller 10.

[0020] Furthermore, the middle section 23 of the pressure roller shaft 20 extends along the axis to both ends, forming stepped shafts 24. The stepped shaft 24 is coaxially arranged with the middle section 23 and has a smaller diameter than the middle section 23. A stepped surface 231 is formed where the end surface of the middle section 23 meets the circumference of the stepped shaft 24. The inner ring of the bearing 30 rests on the stepped surface 231. The stepped surface 231 limits the inner ring of the bearing 30, positioning the bearing 30 with the pressure roller shaft 20 and ensuring accurate assembly of the bearing 30 relative to the pressure roller shaft 20. The mutual restraint between the stepped surface 121 and the bearing 30, and between the bearing 30 and the stepped surface 231, ensures the relative position of the pressure roller 10 and the pressure roller shaft 20 remains stable.

[0021] In addition, combined Figure 4 As shown, the internal cavity of the pressure roller shaft 20 constitutes a secondary oil chamber 25. An oil filling hole 21 is provided on the end face of the pressure roller shaft 20 and is connected to the interior of the secondary oil chamber 25. A main through hole 251 is provided on the circumference of the pressure roller shaft 20, which penetrates the secondary oil chamber 25. The main through hole 251 is connected to the oil storage chamber 40. The provision of the secondary oil chamber 25 increases the total amount of oil stored in the pressure roller 10, avoiding frequent refueling in the later stages. On the other hand, the hollow design of the pressure roller shaft 20 also reduces the overall weight of the pressure roller shaft 20, facilitating assembly and later maintenance. The pressure roller shaft 20 can be considered as a hollow shaft tube section with end caps added at both ends. The oil filling hole 21 is provided on the end caps, making the molding process simple and feasible.

[0022] With the main through-hole 251 configured, the auxiliary oil chamber 25 can also discharge oil normally. It should be noted that in this embodiment, multiple main through-holes 251 are provided around the roller shaft 20, which not only facilitates rapid oil discharge from the auxiliary oil chamber 25, but also prevents a single main through-hole 251 from being unable to discharge oil due to pressure, blockage, or other reasons.

[0023] Furthermore, the auxiliary oil injection hole 22 is connected to the interior of the auxiliary oil chamber 25 . An auxiliary through hole 252 penetrating the auxiliary oil chamber 25 is opened on the circumference of the pressure roller shaft 20 , and the outlet of the auxiliary through hole 252 points to the outer end surface of the bearing 30 .

Claims

1. A hose pump rotor pressure roller assembly, characterized by: A pressure roller shaft (20) is provided at both ends of the pressure roller (10), the pressure roller shaft (20) and the pressure roller (10) are arranged coaxially, an oil storage chamber (40) is provided inside the pressure roller (10), an oil injection hole (21) is provided on the end surface of the pressure roller shaft (20) and / or the pressure roller (10), an oil outlet hole (11) is provided on the outer peripheral surface of the pressure roller (10) at a position opposite to the hose, and the oil injection hole (21) and the oil outlet hole (11) are both connected to the inside of the oil storage chamber (40).

2. The hose pump rotor pressure roller assembly according to claim 1, characterized in that: The pressure roller (10) is in the shape of a short tube or a sleeve as a whole, and the pressure roller shaft (20) passes through the pressure roller (10) along the roller core direction of the pressure roller (10). The bearings (30) and the oil seal (50) are arranged in sequence from the inside to the outside of the port of the pressure roller (10), and the two ends of the pressure roller (10) and the pressure roller shaft (20) are rotated together through the bearings (30).

3. The hose pump rotor pressure roller assembly according to claim 2, characterized in that: The oil storage cavity (40) is formed by the inner circumference of the pressure roller (10), the circumference of the pressure roller shaft (20), and the opposite side end surfaces of the two bearings (30) to form a cavity.

4. The hose pump rotor pressure roller assembly according to claim 2 or 3, characterized in that: An oil injection auxiliary hole (22) is provided on the end surface of the pressure roller shaft (20), the end of the oil injection auxiliary hole (22) extends into the shaft body of the pressure roller shaft (20) and passes through the circumference of the pressure roller shaft (20), and the outlet of the oil injection auxiliary hole (22) points to the outer end surface position of the bearing (30).

5. The hose pump rotor pressure roller assembly according to claim 2, characterized in that: The end of the pressure roller (10) is an expanded stepped hole (12), the bearing (30) and the oil seal (50) are both located in the stepped hole (12), and the outer ring of the bearing (30) is placed on the stepped surface (121) of the stepped hole (12).

6. The hose pump rotor pressure roller assembly according to claim 5, characterized in that: The middle shaft section (23) of the pressure roller shaft (20) extends to both ends of a stepped shaft (24) along the axis direction. The stepped shaft (24) and the middle shaft section (23) are arranged coaxially and have a shaft diameter smaller than the shaft diameter of the middle shaft section (23). A shaft stepped surface (231) is formed at a position where the end face of the middle shaft section (23) and the circumferential surface of the stepped shaft (24) are connected. The inner ring of the bearing (30) is placed on the shaft stepped surface (231).

7. The hose pump rotor pressure roller assembly according to claim 4, characterized in that: The internal cavity of the pressure roller shaft (20) constitutes a secondary oil chamber (25); an oil filling hole (21) is provided on the end surface of the pressure roller shaft (20) and the oil filling hole (21) is communicated with the interior of the secondary oil chamber (25); a main through hole (251) penetrating the secondary oil chamber (25) is provided on the circumferential surface of the pressure roller shaft (20); and the main through hole (251) is communicated with the oil storage chamber (40).

8. The hose pump rotor pressure roller assembly according to claim 7, characterized in that: The auxiliary oil injection hole (22) is connected to the interior of the auxiliary oil chamber (25); an auxiliary through hole (252) penetrating the auxiliary oil chamber (25) is provided on the circumference of the pressure roller shaft (20); and the outlet of the auxiliary through hole (252) points to the outer end surface of the bearing (30).

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