CN218293850U - Screw-sealing disc synchronizing mechanism for 8-shaped sealing meshing auxiliary screw pump - Google Patents

Abstract

The utility model provides a screw-sealing disc synchronous mechanism for an 8-shaped sealing mesh auxiliary screw pump, which comprises a screw rotor, wherein a toothed rotating disc is coaxially arranged on the end part of the screw rotor, a driven gear is coaxially connected on the sealing disc at the side part of the screw rotor, and the driven gear drives the sealing disc to synchronously rotate when rotating; the synchronous control device is characterized by further comprising a duplicate gear which is coaxially connected with an upper end gear and a lower end gear at two end parts of the same shaft body, wherein the upper end gear is in transmission engagement with a toothed rotating disc, the lower end gear is in transmission engagement with a driven gear, through the meshing transmission of the toothed rotating disc and the upper end gear and the meshing transmission of the lower end gear and the driven gear, the synchronous control of the screw rotor and the sealing disc can be realized, the abrasion problem caused by the mutual contact and meshing driving of the screw rotor and the sealing disc is relieved to a certain extent, and the power consumption loss in the working process is reduced.

Description

Screw-sealing disc synchronizing mechanism for 8-shaped sealing meshing auxiliary screw pump

Technical Field

The utility model belongs to the technical field of the positive displacement pump, in particular to a screw rod-sealed dish lazytongs for 8 style of calligraphy sealed mesh secondary screw pump

Background

During the oil extraction process, a large amount of oil sludge is produced. The oil sludge is a pollutant generated in each stage of petroleum processing, has extremely complex components, contains more than 10 percent of oil, more than 40 percent of water and a large amount of toxic substances, and can cause serious harm to air, soil and water bodies in the environment once being discharged into the environment. According to the statistics of the Chinese society for research and materials: 3.25 million tons of oil sludge are produced in China in 2015. The oil sludge contains a large amount of petroleum, and if the oil sludge produced by enterprises every day is not recycled, the method not only causes great resource waste, but also needs to bear a huge penalty bill according to the stipulation of 'penalty is continuously counted according to the day' of the national environmental protection law. Therefore, the oil sludge must be treated by adopting a proper process method, so that the environment can be protected while resources are recovered. The 8-shaped sealing meshing pair screw pump can adapt to a medium with high viscosity and large particle impurities, and is suitable for the aspects of dirty oil and sludge recovery, offshore spilled oil collection, sewage collection and the like.

As a positive displacement pump, the 8-shaped sealing meshing auxiliary screw pump has the advantages of large discharge capacity, good mechanical balance performance, strong medium adaptability, high volume efficiency and the like, and can convey dirty oil sludge fluid medium containing multiple impurities. In the operation process of a common 8-shaped sealing meshing auxiliary screw pump, an auxiliary driving device is not arranged between two 8-shaped sealing discs, and under the action of meshing driving force, a screw rotor rotates under self-driving action, friction exists between the screw rotor and the sealing discs, so that generated heat is difficult to conduct, the screw rotor is abraded, and the efficiency of the pump is reduced; in order to achieve the purposes of energy conservation and high efficiency, an auxiliary driving device is required to be added between the two 8-shaped sealing discs, so that the screw rotor and the sealing discs synchronously rotate, and the contact wear between the screw rotor and the sealing discs is reduced; therefore, the novel screw-sealing disc synchronous mechanism of the 8-shaped sealing meshing pair screw pump has important significance for reducing the abrasion of a screw rotor and improving the operation efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at reducing the screw rotor wearing and tearing that appear among the present 8 font sealing engagement vice screw pump screw rotor and the sealed dish meshing process, provide a screw rod-sealed dish lazytongs for 8 font sealing engagement vice screw pump, be applicable to the drive regulation in the normal working process, effectively reduce screw rotor's wearing and tearing, promote screw pump operating efficiency.

A screw-sealing disk synchronous mechanism for an 8-shaped sealing meshing auxiliary screw pump mainly comprises a screw rotor, a rotating disk with teeth, a duplicate gear, a driven gear, a sealing disk, a power system and the like, wherein the rotating disk with teeth is arranged at the exhaust end of the screw rotor and is coaxial with the screw rotor; the upper end of the duplex gear is meshed with the toothed rotating disc, and the lower end of the duplex gear is meshed with the driven gear; the duplicate gear is fixed in the shell by a bearing; driven gears and sealing discs in the machine shell are arranged on the left side and the right side of the screw rotor and are positioned in the machine shell through a fixed shaft positioned in the geometric center of the screw rotor; the motor drives the screw rotor and the toothed rotating disc to coaxially rotate, the toothed rotating disc drives the duplicate gear to rotate through meshing, and the duplicate gear further drives the driven gear and the sealing disc to coaxially rotate, so that synchronous driving of the screw rotor and the sealing disc is realized.

The screw rotor comprises a screw tail shaft, an inlet section spiral groove, a pressurizing section spiral groove, an outlet section spiral groove and a screw end shaft which are sequentially connected into a whole, the screw rotor end shaft is connected with a hydraulic motor through a coupler, the tail shaft is connected with an outlet end cover in a positioning mode through a bearing, and a rotating disc with teeth is installed at the exhaust end of the screw rotor and is coaxial with the screw rotor. The rotating disc with teeth is installed at the shaft end of the exhaust side of the screw rotor and is coaxial with the screw rotor, so that the change of the axial position caused by thermal deformation is consistent with the axial expansion of the screw rotor under the load working condition with higher temperature and pressure ratio, the phenomenon of locking caused by nonuniform deformation is avoided, and the running reliability of the 8-shaped sealing meshing auxiliary screw pump shaft end synchronizing mechanism is ensured.

The technical scheme adopted by a screw-sealing disc synchronous mechanism for an 8-shaped sealing meshing pair screw pump is as follows: the meshing mode of the upper end of the duplicate gear and the rotating disc with teeth is 1:1, the lower end of the duplicate gear is meshed with the driven gear in a way that the cylindrical helical teeth are meshed at a transmission ratio of 1: 1-gear ratio conical helical teeth are meshed. Each level of the synchronizing mechanism satisfies 1:1 transmission ratio transmission, the speed transmission is stable, the speed sudden change is avoided from being blocked mechanically, the synchronous control of the screw rotor and the sealing disc is realized, the contact between the screw rotor and the sealing disc is reduced, the abrasion of the screw rotor is reduced, and the extra power consumption caused by contact abrasion is saved.

The utility model has the advantages that: firstly, the screw-sealing disc synchronous mechanism provided by the utility model can realize the synchronous control of the screw rotor and the sealing disc through the transmission meshing among the toothed rotating disc, the duplicate gear and the driven gear, relieves the abrasion problem caused by the mutual contact meshing drive of the screw rotor and the sealing disc to a certain extent, and reduces the power loss in the working process; and the toothed rotating disc and the screw rotor are coaxially arranged at the exhaust end of the screw rotor, so that the blocking caused by the mismatching of thermal deformation is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the screw-seal disk synchronizing mechanism of the present invention;

FIG. 2 is a schematic view of a dual gear structure in the screw-seal disk synchronous mechanism of the present invention;

FIG. 3 is a view of the upper end of the duplicate gear meshing with the helical teeth cylinder of the toothed rotating disk;

FIG. 4 is a view of the lower end of the duplex gear in conical engagement with the helical teeth of the driven gear;

in the figure: 1-screw rotor; 2-a toothed rotating disc; 3-duplicate gear; 301-helical cylindrical gear at upper end; 302-lower end helical bevel gear; 4-a driven gear; 5-sealing disc.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the positional or orientational relationship indicated for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the overall structure of the screw-sealing disc synchronizing mechanism of the present invention is schematically illustrated, and the screw-sealing disc synchronizing mechanism for an 8-shaped sealing mesh sub-screw pump of the present invention comprises a screw rotor 1, a toothed rotating disc 2 is coaxially disposed on the end portion of the screw rotor 1, the toothed rotating disc 2 is located on one side of the exhaust end, and further comprises two duplicate gears 3, two of the duplicate gears 3 are composed of an upper-end helical cylindrical gear 301 and a lower-end helical conical gear 302 connected to two end portions of the same shaft body, see fig. 2, and the upper-end helical cylindrical gear 301 and the lower-end helical conical gear 302 are coaxially disposed at two ends of the shaft body; the sealing discs 5 on two sides of the screw rotor are coaxially connected with driven gears 4, and the driven gears 4 can drive the sealing discs 5 to synchronously rotate. The two duplicate gears 3 are fixed in the machine shell through bearings.

Referring to fig. 3 and 4, the helical cylindrical gear 301 at the upper end of the dual gear 3 is in meshing transmission with the toothed rotating disc 2, the helical cylindrical gear 302 at the lower end is in meshing transmission with the driven gear 4, the toothed rotating disc 2 is driven to synchronously rotate when the screw rotor 1 rotates, the toothed rotating disc 2 is meshed to drive the dual gear 3 to rotate, the two dual gears 3 respectively drive one sealing disc 5 to rotate through the helical cylindrical gear at the lower end, and meanwhile, the helical cylindrical gear 301 at the upper end of the dual gear 3 is meshed with the toothed rotating disc 2 in a manner of 1:1, cylindrical helical tooth meshing with a transmission ratio, and the meshing mode of the helical tooth conical gear 302 at the lower end of the duplicate gear 3 and the driven gear is 1:1, synchronous control of the sealing disc 5 and the screw rotor 1 is realized through transmission meshing of all stages 1:1, contact between the screw rotor 1 and the sealing disc 5 is greatly reduced, abrasion of the screw rotor 1 is reduced, and extra power consumption caused by contact abrasion is saved.

Based on the concept of the present invention, it is obvious that those skilled in the art can obtain more embodiments, for example, in some embodiments, the shapes of the upper-end helical cylindrical gear 301 and the lower-end helical conical gear 302 may not be limited, the upper-end gear of the toothed rotating disk 2 and the dual gear 3 is in mesh transmission through a conventional gear, and the lower-end gear of the dual gear 3 is in mesh transmission through a bevel gear and the driven gear 4; in other embodiments, the meshing transmission ratio of the toothed rotating disk 2 to the upper helical gear 301 and the lower helical bevel gear 302 to the driven gear is not limited, and the transmission is performed for the purpose of achieving synchronous rotation of the screw rotor 1 and the sealing disk 5, so that the sizes of the upper helical gear 301 and the lower helical bevel gear 302 can be changed, for example, the meshing manner of the upper helical gear 301 to the toothed rotating disk 2 is 3:1, and the lower end helical bevel gear 302 is meshed with the driven gear 4 in a way of 3:1, and finally still to achieve synchronous rotation of the screw rotor 1 and the sealing disk 5.

Further, the screw rotor 1 is arranged in a pump shell, and a bearing is arranged at the end part of the shaft body of the duplicate gear and is fixedly arranged in the pump shell through the bearing; and a bearing is arranged at the end part of the connecting shaft between the driven gear and the sealing disc, and the driven gear and the sealing disc are also fixedly arranged in the pump shell through the bearing.

Screw rotor 1 is including connecting gradually as an organic whole screw rod tail shaft, entry section helicla flute, pressure boost section helicla flute, export section helicla flute and screw rod end shaft, screw rotor's screw rod end shaft passes through the shaft coupling and links to each other with hydraulic motor, and screw rod tail shaft passes through the bearing and is connected with export end cover location, takes tooth rolling disc 2 to install at screw rotor 1's exhaust end to keep coaxial with screw rotor. The rotating disc 2 with teeth is installed at the shaft end of the exhaust side of the screw rotor and is coaxial with the screw rotor, so that the change of the axial position caused by thermal deformation is consistent with the axial expansion of the screw rotor under the load working condition with higher temperature and pressure ratio, the phenomenon of clamping caused by nonuniform deformation is avoided, and the running reliability of the shaft end synchronizing mechanism of the 8-shaped sealing meshing auxiliary screw pump is ensured.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that, based on the technical solution of the present invention, the modifications or variations of various equivalent structures or equivalent flows can be made by those skilled in the art without any creative work, or can be directly or indirectly applied to other related technical fields, and still be within the scope of the present invention.

Claims (5)

1. A screw-sealing disc synchronous mechanism for an 8-shaped sealing meshing auxiliary screw pump comprises a screw rotor and is characterized in that a rotating disc with teeth is coaxially arranged at the end part of the screw rotor, a driven gear is coaxially connected to the sealing disc at the side part of the screw rotor, and the driven gear drives the sealing disc to synchronously rotate when rotating;

the double-gear is composed of an upper end gear and a lower end gear which are coaxially connected to two end parts of the same shaft body, the upper end gear is in transmission engagement with the toothed rotating disc, the lower end gear is in transmission engagement with the driven gear, and synchronous rotation of the screw rotor and the sealing disc is realized through the engagement transmission of the toothed rotating disc and the upper end gear and the engagement transmission of the lower end gear and the driven gear; the screw rotor is driven to rotate by a hydraulic motor.

2. The screw-seal disk synchronizing mechanism according to claim 1, further characterized in that the upper end gear is an upper end helical cylindrical gear, the lower end gear is a lower end helical conical gear, and the lower end helical conical gear forms a bevel gear engagement with the driven gear.

3. The screw-sealing disk synchronizing mechanism according to claim 1, wherein the meshing transmission ratio of the upper end gear of the duplicate gear to the toothed rotating disk is 1:1, and the meshing transmission ratio of the lower end gear of the duplicate gear to the toothed rotating disk is 1:1.

4. The screw-seal disk synchronizing mechanism according to claim 1, further characterized in that a bearing is arranged at the end part of the shaft body of the duplicate gear, and the duplicate gear is fixedly arranged in the pump shell through the bearing; and a bearing is arranged at the end part of the connecting shaft between the driven gear and the sealing disc, and the driven gear and the sealing disc are also fixedly arranged in the pump shell through the bearing.

5. The screw-seal disk synchronous mechanism according to claim 1, wherein the screw rotor comprises a screw tail shaft, an inlet section spiral groove, a pressurizing section spiral groove, an outlet section spiral groove and a screw end shaft which are sequentially connected into a whole, the screw end shaft of the screw rotor is connected with the hydraulic motor through a coupler, the screw tail shaft is connected with the outlet end cover in a positioning mode through a bearing, and the toothed rotating disk is installed at the exhaust end of the screw rotor and is coaxial with the screw rotor.

Images