Screw pump gear box with anti-splashing baffle
By designing an inclined baffle structure and a guide cylinder and guide rod in the gearbox, the problems of oil leakage and accumulation were solved, achieving effective oil guidance and improved sealing, thus avoiding oil loss.
Patent Information
- Application Number
- CN202520147416.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In existing screw pumps where the gearbox is not equipped with a flat baffle or has one, oil can easily leak from the vent plug, and some oil accumulates on the baffle surface, resulting in oil loss and insufficient utilization.
A screw pump gearbox with anti-splash baffles was designed. The baffle structure is inclined. The overlapping part of the first and second inclined baffles fits against the inner wall of the gearbox to prevent oil from splashing out. The oil is guided to the bottom of the gearbox by the inclined setting. Combined with the guide cylinder and guide rod structure, the baffle is stably installed and sealed.
It effectively prevents oil from leaking out from the vent plug, avoids oil loss, achieves full utilization of oil and prevents accumulation, and improves the sealing of the gearbox and the guiding effect of the oil.
Smart Images
Figure CN223563419U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw pump gearbox technology, specifically a screw pump gearbox with a splash guard. Background Technology
[0002] The twin-screw pump is positioned by bearings, with the two screws not contacting each other within the bushing. A constant clearance is maintained between the tooth flanks, the value of which is determined by the operating conditions and the pump's specifications. The outer diameter of the screw also maintains a constant clearance with the inner diameter of the bushing. The drive between the two screws is accomplished by synchronous gears. Independent lubrication is provided in the gearbox. The twin-screw pump's design greatly expands its application range, enabling the transport of large quantities of non-lubricating media, various viscous media, and corrosive and abrasive liquids, including acids and alkalis. It is an indispensable piece of equipment in transmission and transportation processes. The gearbox is a crucial component ensuring the high-speed operation of the twin-screw pump. To prevent this, a baffle is installed near the top inside the gearbox.
[0003] In existing technologies, many gearboxes lack internal baffles, causing the lubricating oil inside to be splashed by the gear teeth. This splashed oil then leaks out through the vent plug at the top of the gearbox, eventually consuming the lubricating oil. While some gearboxes have internal baffles, these baffles are typically flat. The vent plug is used for adding oil, but because the baffle is flat, it cannot guide the oil, causing some oil to accumulate on its upper surface and preventing efficient oil utilization. Therefore, it is necessary to propose a screw pump gearbox with an anti-splash baffle to solve these problems. Utility Model Content
[0004] The purpose of this utility model is to provide a screw pump gearbox with anti-splash baffles, which prevents oil from leaking out from the vent plug, thereby avoiding oil loss, and facilitates oil guidance to prevent oil from accumulating on the surfaces of the first and second inclined baffles.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a screw pump gearbox with a splash guard, comprising a gearbox body, two linkage gears disposed inside the gearbox body, a top cover disposed at the upper end of the gearbox body, a vent plug being connected through the upper end of the top cover, a first inclined baffle disposed inside the gearbox body, a plurality of connecting rods distributed front and rear are fixedly connected to the outer wall of the first inclined baffle, a second inclined baffle is fixedly connected to the upper end of the plurality of connecting rods, the first inclined baffle is in contact with the left end, front end and rear end of the inner wall of the gearbox body, and the second inclined baffle is in contact with the right end, front end and rear end of the inner wall of the gearbox body;
[0006] The lower end of the top cover is rotatably connected to a rotating column, and the lower end of the rotating column is provided with a threaded hole. The threaded hole is internally threaded with a threaded rod that is fixedly connected to the first inclined baffle.
[0007] In order to prevent the second inclined baffle from rotating relative to the first inclined baffle when the threaded rod enters the threaded hole, as a preferred embodiment of the screw pump gearbox with anti-splash baffle of this utility model, the lower end of the top cover is fixedly connected to a guide cylinder, and a guide rod that matches and is fixedly connected to the second inclined baffle is inserted into the inside of the guide cylinder.
[0008] To facilitate the rotation of the torsion block with a wrench and improve the tightness of the threaded connection between the threaded rod and the threaded hole, in a preferred embodiment of the screw pump gearbox with an anti-splash baffle of this utility model, a torsion block is fixedly connected to the outer wall of the rotating column. The outer wall of the torsion block has a hexagonal structure, and a pressure ring that abuts tightly against the lower end of the torsion block is fixedly connected to the outer wall of the first inclined baffle.
[0009] To improve the sealing between the gearbox body and the top cover, as a preferred embodiment of the screw pump gearbox with anti-splash baffle of this utility model, a sealing gasket that fits tightly against the upper end of the gearbox body is embedded in the lower end of the top cover.
[0010] In order to connect and fix the two rectangular connecting rings and the top cover at the same time, in a preferred embodiment of the screw pump gearbox with anti-splash baffle of this utility model, the outer wall of the top cover and the outer wall of the gearbox body are both fixedly connected with rectangular connecting rings, and the two rectangular connecting rings are fixedly connected by multiple bolts.
[0011] To improve the ease of guide rod entry into the guide cylinder, the upper end of the guide rod is preferably a spherical structure, as a preferred embodiment of the screw pump gearbox with anti-splash baffle of this utility model.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] When the oil is splashed by the toothed structure of the two linked gears, the first and second inclined baffles have a large overlapping area when viewed from above. At the same time, the first and second inclined baffles are in contact with the inner wall of the gearbox body, thus preventing the oil from splashing out. This achieves the purpose of preventing the oil from seeping out from the vent plug and thus avoiding oil loss.
[0014] Oil is injected into the interior of the gearbox body through the vent plug. Since both the first and second inclined baffles are inclined, they guide the oil, causing it to fall to the bottom of the gearbox body. This further facilitates the guidance of the oil and prevents it from accumulating on the surfaces of the first and second inclined baffles. Attached Figure Description
[0015] Figure 1 This is a front sectional view of the present invention.
[0016] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;
[0017] Figure 3 This is a structural diagram of the connection at the first inclined baffle of this utility model;
[0018] Figure 4 This is a partial bottom view of the structure of this utility model.
[0019] In the diagram: 1. Gearbox body; 2. Top cover; 3. Linkage gear; 4. Vent plug; 5. First inclined baffle; 6. Second inclined baffle; 7. Connecting rod; 8. Guide cylinder; 9. Guide rod; 10. Rotating column; 11. Threaded hole; 12. Threaded rod; 13. Pressure ring; 14. Torsion block; 15. Sealing gasket. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0022] Please see Figures 1 to 4A screw pump gearbox with a splash guard includes a gearbox body 1, two linkage gears 3 are arranged inside the gearbox body 1, a top cover 2 is provided at the upper end of the gearbox body 1, a vent plug 4 is connected through the upper end of the top cover 2, a first inclined baffle 5 is provided inside the gearbox body 1, a plurality of front and rear distributed connecting rods 7 are fixedly connected to the outer wall of the first inclined baffle 5, and a second inclined baffle 6 is fixedly connected to the upper end of the plurality of connecting rods 7. The first inclined baffle 5 is in contact with the left end, front end and rear end of the inner wall of the gearbox body 1, and the second inclined baffle 6 is in contact with the right end, front end and rear end of the inner wall of the gearbox body 1.
[0023] The lower end of the top cover 2 is rotatably connected to a rotating column 10. The lower end of the rotating column 10 is provided with a threaded hole 11. The threaded hole 11 is internally threaded with a threaded rod 12 that is fixedly connected to the first inclined baffle 5.
[0024] In this embodiment: when the first inclined baffle 5 and the second inclined baffle 6 need to be installed inside the gearbox body 1, the guide rod 9 is first inserted into the guide cylinder 8, and then the threaded rod 12 is connected with the threaded hole 11. Then the rotating column 10 is rotated, and the threaded rod 12 is screwed into the threaded hole 11 until the torsion block 14 and the pressure ring 13 are tightly abutted. Then the first inclined baffle 5 and the second inclined baffle 6 are inserted into the gearbox body 1, and the sealing gasket 15 is in contact with the upper end of the gearbox body 1. At this time, the first inclined baffle 5 is in contact with the left end, front end and rear end of the inner wall of the gearbox body 1, and the second inclined baffle 6 is in contact with the right end, front end and rear end of the inner wall of the gearbox body 1. Then the two rectangular connecting rings are connected and fixed, and the sealing gasket 15 is tightly abutted with the upper end of the gearbox body 1, thereby completing the installation and fixing of the first inclined baffle 5, the second inclined baffle 6 and the top cover 2.
[0025] When the two linkage gears 3 are working, the oil is splashed by the toothed structure of the two linkage gears 3. Since the first inclined baffle 5 and the second inclined baffle 6 have a large overlapping area when viewed from above, and since the first inclined baffle 5 is in contact with the left end, front end and rear end of the inner wall of the gearbox body 1, and the second inclined baffle 6 is in contact with the right end, front end and rear end of the inner wall of the gearbox body 1, the oil splashes out. Since the first inclined baffle 5 and the second inclined baffle 6 are both inclined, the oil splashed on their lower surfaces will fall down. In this way, the oil is prevented from seeping out from the vent plug 4, thereby avoiding oil loss.
[0026] Oil is injected into the interior of the gearbox body 1 through the vent plug 4. The oil will first come into contact with the first inclined baffle 5 and the second inclined baffle 6. Since both are inclined, they guide the oil, allowing it to fall to the bottom of the gearbox body 1 through the gaps between the multiple connecting rods 7 and the gaps between the first inclined baffle 5 and the second inclined baffle 6. In this way, the oil is guided and prevented from accumulating on the surfaces of the first inclined baffle 5 and the second inclined baffle 6.
[0027] As a technical optimization of this utility model, a guide cylinder 8 is fixedly connected to the lower end of the top cover 2, and a guide rod 9 that matches it and is fixedly connected to the second inclined baffle 6 is inserted inside the guide cylinder 8.
[0028] In this embodiment: by setting guide rod 9 and guide cylinder 8, when threaded rod 12 enters the threaded hole 11, the positions of the second inclined baffle 6 and the first inclined baffle 5 can be prevented from rotating.
[0029] As a technical optimization of this utility model, a torsion block 14 is fixedly connected to the outer wall of the rotating column 10. The outer wall of the torsion block 14 has a hexagonal structure, and a pressure ring 13 that abuts tightly against the lower end of the torsion block 14 is fixedly connected to the outer wall of the first inclined baffle 5.
[0030] In this embodiment: by setting a torsion block 14 with a hexagonal outer wall, it is easy to rotate the torsion block 14 with a wrench. By setting a pressure ring 13, when the torsion block 14 and the pressure ring 13 are in close contact, the tightness of the threaded connection between the threaded rod 12 and the threaded hole 11 can be improved.
[0031] As a technical optimization of this utility model, a sealing gasket 15 is embedded in the lower end of the top cover 2 and closely abuts against the upper end of the gearbox body 1.
[0032] In this embodiment, a sealing gasket 15 is provided to improve the sealing between the gearbox body 1 and the top cover 2.
[0033] As a technical optimization of this utility model, the outer wall of the top cover 2 and the outer wall of the gearbox body 1 are both fixedly connected with rectangular connecting rings, and the two rectangular connecting rings are fixedly connected by multiple bolts.
[0034] In this embodiment, multiple bolts are used to connect and fix the two rectangular connecting rings, and at the same time, to connect and fix the top cover 2.
[0035] As a technical optimization of this utility model, the upper end of the guide rod 9 has a spherical structure.
[0036] In this embodiment, since the upper end of the guide rod 9 has a spherical structure, the ease with which the guide rod 9 enters the guide cylinder 8 can be improved.
[0037] Working principle: When the first inclined baffle 5 and the second inclined baffle 6 need to be installed inside the gearbox body 1, first, the guide rod 9 enters the guide cylinder 8, then the threaded rod 12 aligns with the threaded hole 11. Subsequently, by rotating the torsion block 14 with a wrench, the rotating column 10 is rotated, thus screwing the threaded rod 12 into the threaded hole 11 until the torsion block 14 and the pressure ring 13 are tightly engaged. This improves the tightness of the threaded connection between the threaded rod 12 and the threaded hole 11. Then, the first inclined baffle 5 and the second inclined baffle 6 enter the gearbox body 1, and... Make the sealing gasket 15 contact the upper end of the gearbox body 1. At this time, the first inclined baffle 5 is in contact with the left end, front end and rear end of the inner wall of the gearbox body 1, and the second inclined baffle 6 is in contact with the right end, front end and rear end of the inner wall of the gearbox body 1. Then, the two rectangular connecting rings are connected and fixed by multiple bolts, and the sealing gasket 15 is tightly abutted against the upper end of the gearbox body 1. By setting the sealing gasket 15, the sealing between the gearbox body 1 and the top cover 2 can be improved, thereby completing the installation and fixing of the first inclined baffle 5, the second inclined baffle 6 and the top cover 2.
[0038] When the two linkage gears 3 are working, the oil is splashed by the toothed structure of the two linkage gears 3. Since the first inclined baffle 5 and the second inclined baffle 6 have a large overlapping area when viewed from above, and since the first inclined baffle 5 is in contact with the left end, front end and rear end of the inner wall of the gearbox body 1, and the second inclined baffle 6 is in contact with the right end, front end and rear end of the inner wall of the gearbox body 1, the oil splashes out. Since the first inclined baffle 5 and the second inclined baffle 6 are both inclined, the oil splashed on their lower surfaces will fall down. In this way, the oil is prevented from seeping out from the vent plug 4, thereby avoiding oil loss.
[0039] Oil is injected into the interior of the gearbox body 1 through the vent plug 4. The oil will first come into contact with the first inclined baffle 5 and the second inclined baffle 6. Since both are inclined, they guide the oil, allowing it to fall to the bottom of the gearbox body 1 through the gaps between the multiple connecting rods 7 and the gaps between the first inclined baffle 5 and the second inclined baffle 6. In this way, the oil is guided and prevented from accumulating on the surfaces of the first inclined baffle 5 and the second inclined baffle 6.
[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A screw pump gear box with anti-splashing baffle, comprising a gear box body (1), the inside of the gear box body (1) is provided with two linkage gears (3), the upper end of the gear box body (1) is provided with a top cover (2), the upper end of the top cover (2) is connected through a venting screw plug (4), characterized in that: The inside of the gear box body (1) is provided with a first inclined baffle (5), the outer wall of the first inclined baffle (5) is fixedly connected with a plurality of front and rear distributed connecting rods (7), the upper end of the plurality of connecting rods (7) is fixedly connected with a second inclined baffle (6), the first inclined baffle (5) is in close contact with the left end, the front end and the rear end of the inner wall of the gear box body (1), and the second inclined baffle (6) is in close contact with the right end, the front end and the rear end of the inner wall of the gear box body (1); The lower end of the top cover (2) is rotatably connected with a rotating column (10), a threaded hole (11) is formed in the lower end of the rotating column (10), and a threaded rod (12) fixedly connected with the first inclined baffle (5) is screwedly connected in the threaded hole (11).
2. A screw pump gearbox with anti-spray baffle according to claim 1, characterized in that: The lower end of the top cover (2) is fixedly connected with a guide cylinder (8), the guide cylinder (8) is inserted with a guide rod (9) matched with the guide cylinder (8) and fixedly connected with the second inclined baffle (6).
3. A screw pump gearbox with anti-spray baffle according to claim 1, characterized in that: The outer wall of the rotating column (10) is fixedly connected with a torsion block (14), the outer wall of the torsion block (14) is a hexagonal structure, the outer wall of the first inclined baffle (5) is fixedly connected with a pressure ring (13) in close contact with the lower end of the torsion block (14).
4. A screw pump gearbox with anti-spray baffle as claimed in claim 1, characterized in that: The lower end of the top cover (2) is embeddedly installed with a sealing gasket (15) in close contact with the upper end of the gear box body (1).
5. A screw pump gearbox with anti-spray baffle as claimed in claim 1 characterized in that: The outer wall of the top cover (2) and the outer wall of the gear box body (1) are both fixedly connected with a rectangular connecting ring, and the two rectangular connecting rings are fixedly connected through a plurality of bolts.
6. A screw pump gearbox with anti-spray baffle as claimed in claim 2, characterized in that: The upper end of the guide rod (9) is a spherical surface structure.