Novel screw-sealing disc synchronizing mechanism for disc type sealing meshing pair screw pump

Abstract

The invention relates to the technical field of positive displacement pumps, and discloses a novel screw-sealing disc synchronizing mechanism for a disc type sealing meshing pair screw pump, the novel screw-sealing disc synchronizing mechanism comprises a shell and a gland, the bottom of the shell is connected with the top of the gland; the gear seat is fixed in the shell, and a power transmission wheel train is arranged on the gear seat; the sealing disc shaft is connected with the power transmission wheel train; the transmission shaft is inserted into the power transmission wheel train; the sealing disc is arranged on the upper portion of the sealing disc shaft, and the sealing disc is meshed with the screw rotor. According to the disc sealing single-screw pump, continuous and stable work of the disc sealing single-screw pump is achieved, synchronous rotation of the screw rotor and the sealing disc is ensured through a unique gear meshing mode, and abrasion is reduced; the straight-tooth cylindrical teeth can bear large load and impact, transmission is stable and reliable, the occupied size is small, impact and noise generated by meshing are reduced, the working performance of the pump is improved, and the service life of the pump is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of positive displacement pumps, in particular to a novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump. Background Art

[0002] Oily sludge is a solid waste generated during oil extraction, refining, transportation, and storage. Its main components include oil, water, solid particles, and harmful substances such as heavy metals. Oily sludge contains 15% to 50% petroleum hydrocarbons and contains a variety of organic pollutants and heavy metals, making it highly biotoxic. If improperly handled, oily sludge can cause serious environmental pollution and pose a threat to human health. Furthermore, oily sludge contains toxic and hazardous substances such as benzene and anthracene, posing serious safety hazards to the environment and human health. Therefore, it is particularly important to reduce the amount of oily sludge, treat it harmlessly, and recycle it as a resource to avoid resource waste and environmental pollution. Disc-type seal meshing screw pumps can handle media with high viscosity and large impurities, making them suitable for oily sludge recovery, offshore oil spill collection, and sewage collection.

[0003] As a positive displacement pump, the disc-type sealed meshing screw pump, due to its structural design, can effectively handle high-viscosity and solid-particle media when conveying oily sludge, providing stable pressure and flow, reducing maintenance requirements, and exhibiting self-priming capabilities. Due to its high efficiency and good suction capacity, this pump type is particularly suitable for handling difficult-to-convey fluids such as oily sludge. Disc-type sealed meshing screw pumps require an auxiliary drive device to operate, primarily because their sealing discs are not fully self-driven and require external force for synchronous rotation. Auxiliary drives can improve the efficiency and stability of the pump, ensure precise engagement between the discs and the screw rotor, reduce heat and wear caused by friction, and extend the pump's service life. However, research on existing auxiliary drives is very limited.

[0004] Therefore, it is necessary to provide a new screw-sealing disc synchronization mechanism for a disc-type seal meshing auxiliary screw pump to solve the defects of the existing auxiliary drive device. Summary of the Invention

[0005] In view of this, the present invention proposes a novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing auxiliary screw pump, aiming to solve the defects of the existing auxiliary drive device.

[0006] The present invention proposes a novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump, comprising:

[0007] A shell and a gland, wherein the bottom of the shell is connected to the top of the gland;

[0008] a gear seat fixed in the housing, wherein a power transmission gear train is provided on the gear seat;

[0009] Two sealing disc shafts are provided, and the sealing disc shafts are connected to the power transmission gear train;

[0010] Two transmission shafts are provided, the transmission shafts are inserted into the power transmission gear train, and the transmission shafts are located between the two sealing disc shafts;

[0011] A sealing disk and a screw rotor, wherein two sealing disks are provided, the sealing disks are arranged on the upper part of the sealing disk shaft, and the sealing disks are meshed with the screw rotor.

[0012] Furthermore, the power transmission gear train includes:

[0013] A large gear and a small gear, wherein two large gears and two small gears are provided, the large gear includes a first large gear and a second large gear, and the small gear includes a first small gear and a second small gear;

[0014] The first large gear meshes with the first small gear, the first small gear also meshes with the second small gear, and the second small gear also meshes with the second large gear.

[0015] Furthermore, the sealing disc shaft is connected to the large gear, and the transmission shaft is connected to the small gear.

[0016] Furthermore, the meshing mode between the large gear and the small gear is a cylindrical spur gear meshing with a transmission ratio of 34:33, and the tooth surface transmission clearance is less than or equal to half of the gear rotation angle.

[0017] Furthermore, the meshing mode between the pinions is cylindrical spur tooth meshing with a transmission ratio of 1:1.

[0018] Furthermore, the gear ratio between the large gears is 1:1.

[0019] Furthermore, the two large gears are mounted on the sealing disc shaft, one end of the large gear contacts the gear seat, and the other end is fixed by a nut pressing a gasket.

[0020] Furthermore, the two pinions are mounted on the transmission shaft, and the pinions are fixed to the shaft by adding a shaft sleeve between the transmission shaft and the pinions; one end of the pinion contacts the gear seat, and the other end is fixed by a nut pressing the internal tooth gasket.

[0021] Compared with the prior art, the beneficial effects of the present invention are: through the meshing of the screw rotor and the sealing disk and the coordinated work of the power transmission gear train and the sealing disk, the continuous and stable operation of the disc-sealed single-screw pump is achieved; the unique gear meshing method ensures the synchronous rotation of the screw rotor and the sealing disk, effectively reducing wear; the characteristics of the spur gear enable it to withstand large loads and impacts, the transmission is smooth and reliable, the volume is small, the impact and noise generated by the meshing are reduced, and the working performance and service life of the pump are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0023] Figure 1 A schematic structural diagram of a novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump provided by an embodiment of the present invention;

[0024] Figure 2 A diagram illustrating the installation of a large gear in a power transmission gear train according to an embodiment of the present invention;

[0025] Figure 3 A diagram illustrating the installation method of a pinion in a power transmission gear train according to an embodiment of the present invention;

[0026] Figure 4 A diagram of gear meshing in a power transmission train provided by an embodiment of the present invention.

[0027] In the figure, 1. screw rotor; 2. sealing disk; 3. sealing disk shaft; 4. power transmission gear train; 5. housing; 6. gear seat; 7. transmission shaft; 8. pressure cover; 201. left sealing disk; 202. right sealing disk; 301. left sealing disk shaft; 302. right sealing disk shaft; 401. first large gear; 402. second large gear; 403. first small gear; 404. second small gear. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0029] In some embodiments of the present application, see Figure 1-4 As shown, this embodiment provides a novel screw-sealing disc 2 synchronization mechanism for a disc-type sealing meshing pair screw pump, comprising:

[0030] The shell 5 and the gland 8, the bottom of the shell 5 is connected to the top of the gland 8;

[0031] The gear seat 6 is fixed in the housing 5, and the power transmission gear train 4 is provided on the gear seat 6;

[0032] There are two sealing disc shafts 3, which are connected to the power transmission gear train 4;

[0033] There are two transmission shafts 7, which are inserted into the power transmission gear train 4 and located between the two sealing disc shafts 3;

[0034] The sealing disk 2 and the screw rotor 1 are provided with two sealing disks 2 , which are arranged on the upper part of the sealing disk shaft 3 and mesh with the screw rotor 1 .

[0035] In some embodiments of the present application, the power transmission gear train 4 includes:

[0036] Large gears and small gears, wherein both large gears and small gears are provided in pairs, the large gears include a first large gear 401 and a second large gear 402, and the small gears include a first small gear 403 and a second small gear 404;

[0037] The first large gear 401 is meshed with the first small gear 403 . The first small gear 403 is also meshed with the second small gear 404 . The second small gear 404 is also meshed with the second large gear 402 .

[0038] In some embodiments of the present application, the sealing disc shaft 3 is connected to the large gear, and the transmission shaft 7 is connected to the small gear.

[0039] In some embodiments of the present application, the meshing mode between the large gear and the small gear is a cylindrical spur gear meshing with a transmission ratio of 34:33, and the tooth surface transmission clearance is no more than half of the gear rotation angle.

[0040] In some embodiments of the present application, the meshing mode between the pinions is cylindrical spur tooth meshing with a 1:1 transmission ratio.

[0041] In some embodiments of the present application, the gear ratio between the gears is 1:1.

[0042] In some embodiments of the present application, two large gears are installed on the sealing disk shaft 3, one end of the large gear contacts the gear seat 6, and the other end is fixed by a nut pressing a gasket, and then the large gear is further fixed by a pressure cover 8.

[0043] In some embodiments of the present application, two pinions are mounted on a transmission shaft 7, and the pinions are fixed to the shaft by adding a sleeve between the transmission shaft 7 and the pinions; one end of the pinion contacts the gear seat 6, and the other end is fixed by a nut pressing the internal tooth gasket, and then the pinion is further fixed by a pressure cover 8.

[0044] It can be understood that the continuous and stable operation of the disc-sealed single-screw pump is achieved through the meshing of the screw rotor 1 and the sealing disk 2 and the coordinated work of the power transmission gear train 4 and the sealing disk 2; the unique gear meshing method ensures the synchronous rotation of the screw rotor 1 and the sealing disk 2, effectively reducing wear; the characteristics of the spur gear enable it to withstand large loads and impacts, with smooth and reliable transmission and small footprint, reducing the impact and noise generated by meshing, and improving the working performance and service life of the pump.

[0045] See Figure 1-4 During operation, the left sealing disc 201 and the right sealing disc 202 are respectively engaged with the screw rotor 1. When the screw rotor 1 is engaged with the left sealing disc 201, the screw rotor 1 provides the meshing driving force to rotate the left sealing disc 2. During this process, the meshing driving force of the right sealing disc 202 is insufficient. The left sealing disc drives the power transmission gear train 4 to rotate through the left sealing disc shaft 301, and transmits the power to the right sealing disc shaft 302, driving the right sealing disc 202 to rotate. On the contrary, when the screw rotor 1 is engaged with the right sealing disc 202, the screw rotor 1 provides the meshing driving force to rotate the left sealing disc 202. The rotor 1 provides the meshing driving force to rotate the right sealing disk 202. During this process, the meshing driving force of the left sealing disk 201 is insufficient, and the right sealing disk 202 drives the power transmission gear train 4 to rotate through the sealing disk shaft 3, and transmits the power to the left sealing disk shaft 301, driving the left sealing disk 201 to rotate. No matter which side of the sealing disk 2 the screw rotor 1 meshes with, the sealing disks 2 on both sides can be ensured to rotate synchronously, effectively avoiding the problem of sealing disk asynchronism caused by insufficient driving force on one side, and greatly improving the sealing effect and the stability of the pump body.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A novel screw-seal disc synchronization mechanism for a disc-type seal meshing screw pump, characterized in that: include: A shell and a gland, wherein the bottom of the shell is connected to the top of the gland; a gear seat fixed in the housing, wherein a power transmission gear train is provided on the gear seat; Two sealing disc shafts are provided, and the sealing disc shafts are connected to the power transmission gear train; Two transmission shafts are provided, the transmission shafts being inserted into the power transmission gear train and located between the two sealing disc shafts; A sealing disk and a screw rotor, wherein two sealing disks are provided, the sealing disks are arranged on the upper part of the sealing disk shaft, and the sealing disks are meshed with the screw rotor.

2. The novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump according to claim 1, characterized in that: The power transmission gear train comprises: A large gear and a small gear, wherein two large gears and two small gears are provided, the large gear includes a first large gear and a second large gear, and the small gear includes a first small gear and a second small gear; The first large gear meshes with the first small gear, the first small gear also meshes with the second small gear, and the second small gear also meshes with the second large gear.

3. The novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump according to claim 2, characterized in that: The sealing disc shaft is connected to the large gear, and the transmission shaft is connected to the small gear.

4. The novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump according to claim 2, characterized in that: The meshing mode between the large gear and the small gear is cylindrical spur meshing with a transmission ratio of 34:33, and the tooth surface transmission clearance is less than or equal to half of the gear rotation angle.

5. The novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump according to claim 2, characterized in that: The meshing mode between the pinions is cylindrical spur meshing with a transmission ratio of 1:

1.

6. The novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump according to claim 2, characterized in that: The gear ratio between the large gears is 1:

1.

7. The novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump according to claim 2, characterized in that: The two large gears are mounted on the sealing disc shaft, one end of the large gear contacts the gear seat, and the other end is fixed by a nut pressing a gasket.

8. The novel screw-sealing disc synchronization mechanism for a disc-type sealing meshing pair screw pump according to claim 2, characterized in that: The two pinions are mounted on the transmission shaft, and the pinions are fixed on the shaft by adding a shaft sleeve between the transmission shaft and the pinions; one end of the pinion contacts the gear seat, and the other end is fixed by a nut pressing the internal tooth gasket.

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