Differential mechanism of horizontal spiral centrifuge

Abstract

The utility model belongs to the technical field of differential mechanisms, and discloses a horizontal spiral centrifuge differential mechanism which comprises an outer shell, a first-stage planetary system, a second-stage planetary system and an overload protection assembly, the outer shell is fixed to the outer side of the first-stage planetary system and the outer side of the second-stage planetary system, and the first-stage planetary system comprises a first-stage planetary carrier; a double-row cylindrical roller bearing and a deep groove ball bearing are arranged at the two ends of the first-stage planet carrier respectively, the end, provided with the double-row cylindrical roller bearing, of the first-stage planet carrier is connected to an inner spiral shaft of the rotary drum, and the second-stage planet system is located between the first-stage planet system and the overload protection assembly. The overload protection assembly comprises a coupler, a torsion transmission shaft, a torsion bar and a safety pin, when the inner spiral shaft is overloaded, the safety pin is broken, the differential mechanism of the horizontal spiral centrifugal machine does not have the differential function, and the protection function is started. The differential mechanism can be compactly arranged so that long-time continuous operation can be facilitated, and protection can be conducted in time when the inner rotating shaft is overloaded.

Description

Technical Field

[0001] The utility model relates to the technical field of differentials, in particular to a horizontal spiral centrifuge differential. Background Art

[0002] Horizontal spiral centrifuges are typically compact, can be operated continuously, run relatively smoothly, and have strong adaptability. Due to their high production capacity, easy maintenance, and excellent solid-liquid separation performance, they are currently widely used in fields requiring solid-liquid separation, such as chemical, petroleum, food, pharmaceutical, and environmental protection. A horizontal spiral centrifuge typically consists of a rotating drum, an inner spiral shaft, and a differential. During operation, the drum rotates at high speed, with the inner spiral shaft rotating in the same direction as the drum but at a slightly lower speed. As a result, after the suspension enters the drum, the high-speed rotation of the drum generates a very strong centrifugal force, which in turn separates the suspension into solids and liquids. This causes the solid phase particles to adhere to the inner wall of the drum, while the liquid phase, due to its lower density than the solid phase particles, is subjected to less centrifugal force and resides on the inner side of the drum, achieving the desired separation effect. The relative motion generated by the speed difference between the drum and the inner rotating shaft effectively pushes the solid phase particles to the discharge port at the conical end of the drum for discharge, while simultaneously discharging the liquid phase from the overflow port at the large end of the drum, completing the solid-liquid separation operation. Therefore, the differential connected to the inner rotating shaft is particularly important. How to ensure the stable operation of the inner rotating shaft, make the differential structure compact for long-term continuous operation, and be able to provide timely protection when the inner rotating shaft is overloaded are problems that people in this field need to solve. Utility Model Content

[0003] The purpose of the utility model is to provide a horizontal spiral centrifuge differential to ensure the stable operation of the inner rotating shaft, and to enable the differential structure to be compactly arranged for long-term continuous operation, and to be able to provide timely protection when the inner rotating shaft is overloaded.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A horizontal spiral centrifuge differential, comprising:

[0006] An outer shell, a first-stage planetary system, a second-stage planetary system, and an overload protection assembly. The outer shell is fixed to the outsides of the first-stage planetary system and the second-stage planetary system. The first-stage planetary system includes a first-stage planetary carrier. A double-row cylindrical roller bearing and a deep groove ball bearing are respectively provided at both ends of the first-stage planetary carrier. One end of the double-row cylindrical roller bearing provided on the first-stage planetary carrier is connected to the inner spiral shaft of the drum. The second-stage planetary system is located between the first-stage planetary system and the overload protection assembly.

[0007] The overload protection assembly includes a coupling, a torsion transmission shaft, a torsion bar and a safety pin. The torsion transmission shaft is connected to the secondary planetary system through the coupling. One end of the torsion bar is connected to the torsion transmission shaft, and the other end is connected to the safety pin. When the inner spiral shaft is overloaded, the safety pin breaks, and the torsion transmission shaft can rotate freely, so that the horizontal spiral centrifuge differential does not have a differential function, and the protection function is activated.

[0008] Optionally, the outer shell includes an input end support shell, a rear shell and a support cover, the input end support shell and the support cover are respectively arranged on the outside of the first-stage planetary system and the outside of the second-stage planetary system, and the rear shell is fixed to the support cover and is located on the outside of the second-stage planetary system.

[0009] Optionally, a support plate is further provided between the first-stage planetary system and the second-stage planetary system, and the support plate, the rear shell and the support cover are connected by fasteners.

[0010] Optionally, the double-row cylindrical roller bearing is located between the input-end support housing and the first-stage planet carrier, and the deep groove ball bearing is located between the support plate and the first-stage planet carrier.

[0011] Optionally, a spherical roller bearing is provided between the support cover and the secondary planetary system.

[0012] Optionally, the first-stage planet carrier is provided with an internal spline for connecting to the inner screw shaft.

[0013] As an option, the first-stage planetary system also includes a first-stage sun gear, a first-stage planetary gear and a first-stage ring gear, the first-stage sun gear is connected to the first-stage planetary carrier, the first-stage planetary gear is engaged with the outside of the first-stage sun gear, the first-stage ring gear is engaged with the outside of the first-stage planetary gear, and the first-stage ring gear is connected to the outer shell.

[0014] As an option, the secondary planetary system includes a secondary planetary carrier, a secondary sun gear, a secondary planetary gear and a secondary ring gear, the secondary planetary carrier is connected to the primary sun gear, one end of the secondary sun gear is connected to the secondary planetary carrier, and the other end is connected to the overload protection assembly, the secondary planetary gear is engaged with the outside of the secondary sun gear, the secondary ring gear is engaged with the outside of the secondary planetary gear, and the secondary ring gear is connected to the outer shell.

[0015] Optionally, the first-stage planetary gear is provided with a first-stage planetary shaft, and the second-stage planetary gear is provided with a second-stage planetary shaft. Both the first-stage planetary shaft and the second-stage planetary shaft are configured as hollow structures, and radial pads are installed on the outside of both.

[0016] Optionally, a screw hole is provided on the input end support shell for connecting the drum.

[0017] Beneficial effects of the utility model:

[0018] The present invention is provided with an outer shell that can protect the interior of the primary planetary system and the secondary planetary system, thereby preventing the two from being affected by the outside world during operation, and at the same time effectively preventing the primary planetary system and the secondary planetary system from being corroded, thereby extending the service life. Furthermore, the double-row cylindrical roller bearings and deep groove ball bearings provided at both ends of the primary planetary carrier of the primary planetary system can effectively ensure the double support effect of the primary planetary carrier, thereby improving the load-bearing capacity of the horizontal spiral centrifuge differential and effectively extending its service life. At the same time, the present invention is provided with an overload protection component to automatically activate the protection function when the inner spiral shaft is overloaded, so as to avoid damage to the horizontal spiral centrifuge differential, thereby effectively avoiding excessive maintenance work and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a horizontal spiral centrifuge differential described in an embodiment of the present utility model.

[0020] In the picture:

[0021] 10-input end support housing; 21-first-stage planet carrier; 22-first-stage sun gear; 23-first-stage planet gear; 231-first-stage planet shaft; 24-first-stage ring gear; 201-double-row cylindrical roller bearing; 202-deep groove ball bearing; 31-secondary planet carrier; 32-secondary sun gear; 33-secondary planet gear; 331-secondary planet shaft; 34-radial pad; 35-secondary ring gear; 40-support plate; 50-rear housing; 60-support cover; 601-spherical roller bearing; 71-coupling; 72-torque transmission shaft; 73-torsion bar; 74-safety pin. DETAILED DESCRIPTION

[0022] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this utility model, unless otherwise expressly specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, direct or indirect connections through an intermediate medium, and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] In the description of the present utility model, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] The technical solution of this embodiment will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0026] like Figure 1 As shown, this embodiment provides a horizontal spiral centrifuge differential, including an outer shell, a primary planetary system, a secondary planetary system, and an overload protection assembly. The outer shell is fixed to the outside of the primary planetary system and the secondary planetary system. The primary planetary system includes a primary planetary carrier 21. The two ends of the primary planetary carrier 21 are respectively provided with a double-row cylindrical roller bearing 201 and a deep groove ball bearing 202. One end of the primary planetary carrier 21 provided with the double-row cylindrical roller bearing 201 is connected to the inner spiral shaft of the drum. The secondary planetary system is located between the primary planetary system and the overload protection assembly.

[0027] The overload protection assembly includes a coupling 71, a torque transmission shaft 72, a torsion bar 73 and a safety pin 74. The torque transmission shaft 72 is connected to the secondary planetary system through the coupling 71. One end of the torsion bar 73 is connected to the torque transmission shaft 72, and the other end is connected to the safety pin 74. When the inner screw shaft is overloaded, the safety pin 74 breaks and the torque transmission shaft 72 can rotate freely.

[0028] Specifically, in this embodiment, an outer shell is provided to protect the interior of the primary planetary system and the secondary planetary system, thereby preventing the two from being affected by the outside world during operation, and effectively preventing the primary planetary system and the secondary planetary system from being corroded, thereby extending their service life. Furthermore, the double-row cylindrical roller bearings 201 and deep groove ball bearings 202 provided at both ends of the primary planetary carrier 21 of the primary planetary system can effectively ensure the dual support effect of the primary planetary carrier 21, thereby improving the load-bearing capacity of the horizontal spiral centrifuge differential and effectively extending its service life. At the same time, in this embodiment, an overload protection component is provided to automatically activate the protection function when the inner spiral shaft is overloaded, so as to avoid damage to the horizontal spiral centrifuge differential, thereby effectively avoiding excessive maintenance work and reducing maintenance costs.

[0029] The specific structure of the horizontal spiral centrifuge differential in this embodiment is described below.

[0030] like Figure 1 As shown, the horizontal spiral centrifuge differential in this embodiment includes an outer shell, a primary planetary system, a secondary planetary system and an overload protection component. Specifically, the outer shell is fixed to the outside of the primary planetary system and the secondary planetary system to protect the two and prevent the external environment from affecting their operation. At the same time, the inside and the outside of the two are separated to prevent corrosion and other factors from affecting their service life. Furthermore, the primary planetary system and the secondary planetary system are interconnected to realize the differential function of the horizontal spiral centrifuge differential, so that solids and liquids can be separated. Furthermore, the primary planetary system is connected to the inner spiral shaft of the drum, and the secondary planetary system is located between the primary planetary system and the overload protection component, and the overload protection component can automatically turn on the protection function when the inner spiral shaft is overloaded, so that the horizontal spiral centrifuge differential loses its differential function, thereby protecting the equipment and reducing maintenance costs.

[0031] like Figure 1 As shown, in this embodiment, the outer shell includes an input-end support shell 10, a rear shell 50, and a support cover 60, and is provided with a support plate 40. Specifically, the input-end support shell 10 and the support cover 60 are respectively disposed on the outside of the primary planetary system and the outside of the secondary planetary system. Furthermore, the rear shell 50 is fixedly connected to the support cover 60 and is located outside the secondary planetary system. Thus, the input-end support shell 10, the rear shell 50, and the support cover 60 can protect the primary and secondary planetary systems. For example, in this embodiment, a support plate 40 is disposed between the primary and secondary planetary systems, and the support plate 40, the rear shell 50, and the support cover 60 are connected by fasteners. In this embodiment, the fasteners are configured as bolts to ensure stable installation of the support plate 40. For example, screw holes can also be provided on the input-end support shell 10, so that the drum can be mounted on the input-end support shell 10 using bolts.

[0032] Optionally, in this embodiment, the primary planetary system includes a primary planetary carrier 21, a primary sun gear 22, a primary planetary gear 23, and a primary ring gear 24. The primary planetary gear 23 is provided with a primary planetary shaft 231. Double-row cylindrical roller bearings 201 and deep groove ball bearings 202 are also provided at both ends of the primary planetary carrier 21. Specifically, one end of the primary planetary carrier 21 provided with the double-row cylindrical roller bearing 201 is provided with an internal spline for connecting to the inner spiral shaft of the drum to ensure that the inner spiral shaft does not move axially during rotation, thereby achieving a tighter connection. Exemplarily, the input-end support housing 10 is mounted on the primary planet carrier 21, with a double-row cylindrical roller bearing 201 positioned between the input-end support housing 10 and the primary planet carrier 21, and a deep-groove ball bearing 202 positioned between the support plate 40 and the primary planet carrier 21. This dual support arrangement of the primary planet carrier 21 by the double-row cylindrical roller bearing 201 and the deep-groove ball bearing 202 effectively improves the load-bearing capacity of the entire horizontal spiral centrifuge differential, thereby extending the service life of the entire device. Furthermore, in this embodiment, the primary sun gear 22 is connected to the primary planet carrier 21, the primary planet gears 23 engage with the outer side of the primary sun gear 22, and the primary ring gear 24 engages with the outer side of the primary planet gears 23. The primary ring gear 24 is bolted to the input-end support housing 10 of the outer housing, thereby ensuring the normal operation of the primary planet system and the stable installation of the input-end support housing 10. Exemplarily, in this embodiment, the large end of the outer side of the input-end support housing 10 is bolted to the primary ring gear 24.

[0033] like Figure 1 As shown, the secondary planetary system similarly includes a secondary planetary carrier 31, a secondary sun gear 32, secondary planetary gears 33, and a secondary ring gear 35, with the secondary planetary gears 33 being provided with a secondary planetary shaft 331. Specifically, in this embodiment, the secondary planetary carrier 31 is connected to the primary sun gear 22, and one end of the secondary sun gear 32 is connected to the secondary planetary carrier 31, and the other end is connected to the overload protection assembly. The secondary planetary gears 33 engage with the outer side of the secondary sun gear 32, and the secondary ring gear 35 engages with the outer side of the secondary planetary gears 33. In this embodiment, the secondary ring gear 35 is connected to the rear housing 50 of the outer shell, thereby ensuring the normal operation of the secondary planetary system and the stable installation of the rear housing 50. Exemplarily, the secondary ring gear 35 is disposed inside the rear housing 50. Furthermore, a spherical roller bearing 601 is disposed between the support cover 60 and the secondary sun gear 32 of the secondary planetary system to ensure effective transmission of force. For example, in this embodiment, the first-stage planetary shaft 231 and the second-stage planetary shaft 331 are both configured as hollow structures, and radial bushings 34 are installed on the outside of both. Thus, the first-stage planetary gear 23 and the second-stage planetary gear 33 are both supported by radial bushings 34, which can effectively utilize the internal space of the horizontal spiral centrifuge differential, making the size of the overall equipment smaller and the structure more compact.

[0034] like Figure 1 As shown, the overload protection assembly in this embodiment includes a coupling 71, a torsion transmission shaft 72, a torsion bar 73 and a safety pin 74. Specifically, the torsion transmission shaft 72 is connected to the secondary planetary system through the coupling 71, one end of the torsion bar 73 is connected to the torsion transmission shaft 72, and the other end is connected to the safety pin 74, and when the inner spiral shaft is overloaded, the safety pin 74 can break in time, so that the torsion transmission shaft 72 can rotate freely, thereby making the horizontal spiral centrifuge differential no longer have a differential function, thereby turning on the protection function to avoid damage to the equipment. For example, in this embodiment, the torsion bar 73 is connected to the torsion transmission shaft 72 by a flat key, and in other embodiments, other ways of connection can also be selected, which will not be repeated here.

[0035] In summary, in this embodiment, the double-row cylindrical roller bearings 201 and the deep groove ball bearings 202 can realize the double-support structure of the first-stage planetary carrier 21, thereby improving the load-bearing capacity of the horizontal spiral centrifuge differential and effectively extending its service life. Furthermore, the first-stage planetary gears 23 and the second-stage planetary gears 33 are both supported by radial pads 34, which can make the overall size of the horizontal spiral centrifuge differential smaller, the structure more compact, and improve its internal space utilization. Finally, when the inner spiral shaft is overloaded, the relative movement between the torsion bar 73 and the safety pin 74 in the overload protection assembly can cause the safety pin 74 to break, and realize the free rotation of the torsion transmission shaft 72 so that the horizontal spiral centrifuge differential no longer has a differential function, thereby realizing the automatic protection function when the centrifuge is overloaded as a whole, reducing maintenance costs.

[0036] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A horizontal spiral centrifuge differential, characterized in that: include: An outer shell, a primary planetary system, a secondary planetary system and an overload protection assembly, wherein the outer shell is fixed to the outer sides of the primary planetary system and the secondary planetary system, the primary planetary system comprises a primary planetary carrier (21), two ends of the primary planetary carrier (21) are respectively provided with a double-row cylindrical roller bearing (201) and a deep groove ball bearing (202), and one end of the primary planetary carrier (21) provided with the double-row cylindrical roller bearing (201) is connected to the inner spiral shaft of the drum, and the secondary planetary system is located between the primary planetary system and the overload protection assembly; The overload protection assembly comprises a coupling (71), a torsion transmission shaft (72), a torsion bar (73) and a safety pin (74); the torsion transmission shaft (72) is connected to the secondary planetary system through the coupling (71); one end of the torsion bar (73) is connected to the torsion transmission shaft (72), and the other end is connected to the safety pin (74); when the inner spiral shaft is overloaded, the safety pin (74) breaks, and the torsion transmission shaft (72) can rotate freely.

2. The horizontal spiral centrifuge differential according to claim 1, characterized in that: The outer shell comprises an input end support shell (10), a rear shell (50) and a support cover (60); the input end support shell (10) and the support cover (60) are respectively arranged on the outside of the primary planetary system and the outside of the secondary planetary system; the rear shell (50) is fixed to the support cover (60) and is located on the outside of the secondary planetary system.

3. The horizontal spiral centrifuge differential according to claim 2, characterized in that: A support plate (40) is further provided between the primary planetary system and the secondary planetary system, and the support plate (40), the rear housing (50) and the support cover (60) are connected via fasteners.

4. The horizontal spiral centrifuge differential according to claim 3, characterized in that: The double-row cylindrical roller bearing (201) is located between the input end support housing (10) and the first-stage planet carrier (21), and the deep groove ball bearing (202) is located between the support plate (40) and the first-stage planet carrier (21).

5. The horizontal spiral centrifuge differential according to claim 2, characterized in that: A spherical roller bearing (601) is provided between the support cover (60) and the secondary planetary system.

6. The horizontal spiral centrifuge differential according to claim 1, characterized in that: The first-stage planet carrier (21) is provided with an internal spline for connecting to the internal spiral shaft.

7. The horizontal spiral centrifuge differential according to claim 1, characterized in that: The first-stage planetary system further comprises a first-stage sun gear (22), a first-stage planetary gear (23) and a first-stage ring gear (24), wherein the first-stage sun gear (22) is connected to the first-stage planetary carrier (21), the first-stage planetary gear (23) is engaged with the outside of the first-stage sun gear (22), the first-stage ring gear (24) is engaged with the outside of the first-stage planetary gear (23), and the first-stage ring gear (24) is connected to the outer shell.

8. The horizontal spiral centrifuge differential according to claim 7, characterized in that: The secondary planetary system comprises a secondary planetary carrier (31), a secondary sun gear (32), a secondary planetary gear (33) and a secondary ring gear (35), wherein the secondary planetary carrier (31) is connected to the primary sun gear (22), one end of the secondary sun gear (32) is connected to the secondary planetary carrier (31), and the other end is connected to the overload protection component, the secondary planetary gear (33) is engaged with the outside of the secondary sun gear (32), the secondary ring gear (35) is engaged with the outside of the secondary planetary gear (33), and the secondary ring gear (35) is connected to the outer shell.

9. The horizontal spiral centrifuge differential according to claim 8, characterized in that: The first-stage planetary gear (23) is provided with a first-stage planetary shaft (231), and the second-stage planetary gear (33) is provided with a second-stage planetary shaft (331). Both the first-stage planetary shaft (231) and the second-stage planetary shaft (331) are configured as hollow structures, and radial bushes (34) are installed on the outside of both.

10. The horizontal spiral centrifuge differential according to claim 2, characterized in that: The input end support shell (10) is provided with a screw hole for connecting with the rotating drum.

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