Self-suction gear oil pump

Abstract

The utility model relates to the technical field of self-suction type gear oil pumps, and discloses a self-suction type gear oil pump which comprises a shell, the middle sides of the left portion and the right portion of the shell are fixedly connected with a connecting flange and an oil outlet flange respectively, the upper side of the interior of the shell is rotationally connected with a main shaft, and the rear end of the shell is fixedly connected with a motor. The output end of the motor is fixedly connected with the main shaft, the lower side of the interior of the shell is rotationally connected with a rotating shaft, the middle sides of the front portions of the main shaft and the rotating shaft are each provided with a quick release assembly, the front side of the middle of the main shaft and the middle of the rotating shaft are each provided with a gear, and the front portion of the shell and the shell cover are fixed through a plurality of first bolts. When the filter screen needs to be replaced, the lower square box is taken out, the clamping rod is separated under the action of the spring, and the square block can be screwed out for replacement. When the gear is damaged, the gear can be automatically replaced, the shell cover is taken firstly, the round rod is rotated to separate the inclined surface from the inclined block, and the round rod is screwed for fixing after the gear is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of self-priming gear oil pumps, in particular to a self-priming gear oil pump. Background Art

[0002] A gear oil pump is a device that uses the rotation of gears to transport and pressurize liquids. Its main structure consists of a pair of meshing gears, a pump housing, and inlet and outlet pipes. The meshing motion of the rotating gears draws in liquid and pushes it to the outlet, thereby achieving both liquid flow and pressurization.

[0003] The working principle of the gear pump is to form the suction and discharge of liquid through the rotation of two meshing gears. The spatial changes caused by the rotation of the gears cause the liquid to be sucked in from the oil inlet and then pushed to the oil outlet, achieving liquid pressurization and delivery.

[0004] In the prior art, when a gear oil pump extracts oil, solid particles are present inside. These particles can cause increased wear on the gears, thereby shortening the gear's service life and increasing maintenance costs and downtime. Furthermore, damaged gears are difficult to replace, which has a serious impact on equipment operation and increases maintenance costs and the risk of chain damage. Therefore, a self-priming gear oil pump is proposed to address the above-mentioned problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a self-priming gear oil pump, which aims to improve the problems in the existing technology that some gear oil pumps in the oil body are pumped, solid particles will aggravate gear wear, shorten the service life, and make replacement of gears difficult after damage, seriously affecting equipment operation and increasing maintenance costs and chain damage risks.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a self-priming gear oil pump, comprising a housing, wherein the middle sides of the left and right parts of the housing are fixedly connected with a connecting flange and an oil outlet flange respectively, the upper side of the interior of the housing is rotatably connected with a main shaft, the rear end of the housing is fixedly connected with a motor, the output end of the motor is fixedly connected to the main shaft, the lower side of the interior of the housing is rotatably connected with a rotating shaft, the main shaft and the middle side of the front of the rotating shaft are both provided with a quick-release assembly, the middle front side of the main shaft and the middle of the rotating shaft are both provided with gears, and the front part of the housing is fixed to the housing cover by a plurality of bolts;

[0007] A filter mechanism is connected to the connecting flange. The filter mechanism is used to intercept solid particles in the oil and protect key components such as gears. The filter mechanism includes a square box. Long grooves are provided on the upper and lower sides of the interior of the square box. A fan-shaped groove is provided on one side of the long groove. Square blocks are clamped inside the fan-shaped grooves. A second circular ring is fixedly connected between the blocks. Two stainless steel filter screens are fixedly connected to the middle side of the inner side of the second circular ring at equal distances. A clamping assembly is provided on one side of the long groove. The left part of the square box is fixedly connected to the oil inlet flange.

[0008] As a further description of the above technical solution: the clamping assembly includes a cylindrical groove 1, each of which is opened on one side of the long groove, one end of a spring is fixedly connected to the right side of the inner side of the cylindrical groove 1, the other end of the spring is fixedly connected to a ring 1, the ring 1 slides inside the cylindrical groove 1, the middle part of the ring 1 is fixedly connected to a clamping rod, the middle side of the right part of the block is opened with a cylindrical hole, and the left end of the clamping rod is clamped with the cylindrical hole;

[0009] As a further description of the above technical solution: a quick-release assembly, the quick-release assembly includes a second cylindrical groove, the second cylindrical groove is opened on the front middle side of the main shaft and the rotating shaft, the middle front side of the second cylindrical groove is provided with an internal thread groove, a round rod is slid inside the second cylindrical groove, a middle side of the round rod is fixedly connected to a third circular ring, the outer side of the third circular ring is provided with an external thread, four inclined blocks are equidistantly slidably connected to the middle side of the main shaft and the rotating shaft, the rear end of the round rod is an inclined surface, the inclined blocks are in contact with the inclined surface, and a plurality of square grooves are opened on the front middle side of the gear, and the square grooves are engaged with the inclined blocks;

[0010] As a further description of the above technical solution: two bearings 2 are equidistantly arranged on the rear side of the interior of the housing, the middle portion of the main shaft is fixedly connected to the interior of the upper bearing 2, the rear end of the rotating shaft is fixedly connected to the lower bearing 2, two bearings 1 are equidistantly arranged on the middle side of the interior of the housing cover, and the front ends of the main shaft and the rotating shaft are both engaged with bearing 1;

[0011] As a further description of the above technical solution: the left portion of the connecting flange is connected to the square box by a plurality of bolts;

[0012] As a further description of the above technical solution: two top grooves are equidistantly formed inside the shell cover, and the front ends of the main shaft and the rotating shaft are in contact with the top grooves;

[0013] As a further description of the above technical solution: a gasket 1 is provided between the connecting flange and the square box, and a gasket 2 is provided between the shell and the shell cover;

[0014] As a further description of the above technical solution: a nameplate is fixedly connected to the middle side of the front portion of the shell cover.

[0015] The utility model has the following beneficial effects:

[0016] 1. In this utility model, a removable ring and two stainless steel filters are installed within the box. These effectively intercept solid particles in the oil, preventing them from entering the gear pump, effectively protecting key components such as the gears, extending the life of the equipment, and reducing maintenance costs. Furthermore, cleaning or replacing the filters is extremely convenient. Simply remove the box, and the pressure exerted by the connecting flange on the lever disappears. The lever automatically disengages from the cylindrical hole under the action of the spring. Then, unscrewing the block with the cylindrical hole allows the filters to be easily removed for cleaning or replacement, significantly improving maintenance efficiency.

[0017] 2. In this utility model, when a gear is damaged, the operator can quickly replace the gear by removing the housing cover and rotating the rod. This can be completed in a short time, greatly reducing equipment downtime and improving work efficiency. Furthermore, the new fixing method is firm and reliable, effectively preventing the gear from loosening or shifting again during operation, ensuring stable operation of the equipment, solving the problem of difficult replacement of damaged gears, reducing maintenance costs, and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structural diagram of a self-priming gear oil pump proposed by the utility model;

[0019] Figure 2 This is a rear view of a self-priming gear oil pump proposed in the utility model;

[0020] Figure 3 This is an expanded view of a self-priming gear oil pump proposed in the utility model;

[0021] Figure 4 This is a right sectional view of a self-priming gear oil pump proposed in the utility model;

[0022] Figure 5 for Figure 1 Cross-sectional view of the filter mechanism in the overall structure diagram.

[0023] Legend:

[0024] 1. Housing; 2. Housing cover; 3. Oil outlet flange; 4. Filter mechanism; 401. Square box; 402. Oil inlet flange; 403. Gasket 1; 404. Sector groove; 405. Long groove; 406. Cylindrical groove 1; 407. Clamping rod; 408. Ring 1; 409. Spring; 4010. Stainless steel filter; 4011. Ring 2; 4012. Square block; 4013. Cylindrical hole; 5. Connecting flange; 6. Bolt 1; 7. Gasket 2; 8. Gear; 9. Main shaft; 10. Rotating shaft; 11. Nameplate; 12. Bolt 2; 13. Bearing 1; 14. Square groove; 15. Bearing 2; 16. Oblique block; 17. Cylindrical groove 2; 18. Internal thread groove; 19. Ring 3; 20. External thread; 21. Top groove; 22. Round rod; 23. Motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Reference Figure 1 、 Figure 2 and Figure 5The present invention provides an embodiment of a self-priming gear oil pump comprising a housing 1. Housing 1, serving as the main structure of the gear oil pump, is typically made of high-strength cast iron, making it durable and sturdy, providing a stable mounting and support environment for other components. A connecting flange 5 and an oil outlet flange 3 are fixedly connected to the middle of the left and right sides of the housing, respectively. The connecting flange 5 is typically made of stainless steel and can be customized to meet specific requirements. It connects the filter mechanism 4 to the housing 1, ensuring smooth flow of oil into the pump. The oil outlet flange 3, also made of stainless steel and matching the connecting flange 5, serves as the channel for the pump to output oil, delivering the oil pumped by the gear pump to the desired location. A main shaft 9 is rotatably connected to the upper inner side of the housing 1. Main shaft 9 is typically made of high-quality alloy steel, with a design determined by the pump's power and design requirements, and exhibits high strength and wear resistance. A motor 23 is fixedly connected to the rear end of the housing 1. The output end of motor 23 is fixedly connected to main shaft 9. Motor 23 provides power to the gear oil pump, driving gear 8 to achieve liquid delivery. The lower interior of housing 1 is rotatably connected to a rotating shaft 10. Made of similar material and type to main shaft 9, shaft 10 plays a key role in the operation of the oil pump, rotating gear 8 to pump the oil. Quick-release assemblies are located on the front center of both main shaft 9 and shaft 10 to facilitate replacement and maintenance of gear 8. The front of housing 1 is secured to housing cover 2 via several bolts 6, typically made of high-strength carbon steel, with the bolts 6 selected based on the required connection strength.

[0027] The filter mechanism 4 is connected to the connecting flange 5 and plays a vital role in the gear oil pump. It is mainly composed of a square box 401, which is generally made of aluminum alloy. The model is determined according to the flow rate and filtration requirements of the oil pump and is lightweight and corrosion-resistant. The upper and lower sides of the interior of the square box 401 are provided with elongated grooves 405, and one side of the elongated grooves 405 is provided with fan-shaped grooves 404, which facilitate the installation of the filter assembly. The interior of the fan-shaped grooves 404 is clamped with blocks 4012. The blocks 4012 are usually made of stainless steel, and the model matches the fan-shaped grooves 404, with good wear resistance and corrosion resistance. A second ring 4011 is fixedly connected between the blocks 4012. The second ring 4011 is generally made of stainless steel, and the model is determined according to the size of the filter mechanism. Two stainless steel filters 4010 are equidistantly fixedly connected to the center of the inner side of ring 2 4011. Stainless steel filters 4010 are made of high-quality stainless steel, and their size is selected based on the required filtration accuracy. They can effectively intercept solid particles in the oil, preventing them from entering the gear pump and damaging key components such as gear 8. A snap-fit ​​assembly is provided on one side of each elongated groove 405. The snap-fit ​​assembly includes a cylindrical groove 1 406. Cylindrical groove 1 406 is provided on one side of each elongated groove 405. A spring 409 is fixedly connected to the right side of each cylindrical groove 1 406. Spring 409 is generally made of alloy steel and its size is selected based on the required snap-fit ​​strength, exhibiting good elasticity and durability. The other end of each spring 409 is fixedly connected to ring 1 408, which slides inside cylindrical groove 1 406. Ring 1 408 is generally made of stainless steel and its size matches that of cylindrical groove 1 406. The middle portion of ring 1 408 is fixedly connected to a clamping rod 407, which is typically made of carbon steel and is selected based on the required strength. A cylindrical hole 4013 is formed in the middle of the right side of each block 4012. The left end of the clamping rod 407 engages with the cylindrical hole 4013, ensuring the stable installation of the block 4012 and the stainless steel filter screen 4010 inside the box 8. When the box 401 is removed, the clamping rod 407 is disengaged from the cylindrical hole 4013 under the action of the spring 409. During installation, the block 407 with the cylindrical hole 4013 is screwed into the fan-shaped groove 404. When the box 401 is mounted on the connecting flange 5, the connecting flange 5 squeezes the clamping rod 407, causing it to snap into the inside of the cylindrical hole 4013 to achieve securement. The left side of the connecting flange 5 is connected to the box 401 via several bolts 12, the material and type of which are similar to bolts 16. The left side of the box 401 is fixedly connected to an oil inlet flange 402, typically made of stainless steel and sized according to the size of the oil inlet pipeline. A gasket 403 is installed between the connecting flange 5 and the box 401. Gasket 403 is typically made of rubber and sized according to the size of the connecting flange 5 and the box 401, providing a seal and cushioning effect to prevent oil leakage.

[0028] Reference Figure 3-Figure 4 The quick-release assembly includes a cylindrical groove 2 17. The cylindrical groove 2 17 is opened on the front middle side of the main shaft 9 and the rotating shaft 10. The cylindrical groove 2 17 is generally a circular hole structure made of alloy steel. The model is determined according to the size of the main shaft 9 and the rotating shaft 10, providing space for the installation of the round rod 22. The middle front side of the cylindrical groove 2 17 is provided with an internal thread groove 18. The internal thread groove 18 cooperates with the external thread 20 on the outside of the ring 3 19 to fix the round rod 22. The round rod 22 is usually made of stainless steel, and the model is determined according to the design requirements of the quick-release assembly. The ring 3 19 is generally made of stainless steel, and the model matches the round rod 22. Four bevel blocks 16 are equidistantly connected to the middle side of the main shaft 9 and the rotating shaft 10. The bevel blocks 16 are generally made of alloy steel, and the model is determined according to the size of the square groove 14 of the gear 8. The rear end of the round rod 22 is inclined, and this inclined surface contacts the inclined block 16. When the round rod 22 moves backward, the inclined surface pushes the inclined block 16 outward. Several square grooves 14 are provided on the front middle side of the gear 8. The size and shape of the square grooves 14 match the inclined blocks 16 and each engages with the inclined blocks 16. When the round rod 22 moves backward, the inclined surface pushes the inclined blocks 16 outward, causing the inclined blocks 16 to press against the square grooves 14 of the gear 8, thereby fixing the gear 8 to the main shaft 9 and the rotating shaft 10. When the gear 8 needs to be replaced, the round rod 22 can be simply twisted forward to separate the inclined surface from the inclined block 16, and the gear can be easily removed for replacement. Two bearings 15 are equidistantly arranged on the rear side of the interior of the housing 1. Bearings 15 are generally ball bearings, and the model is determined according to the size and speed requirements of the main shaft 9 and the rotating shaft 10. They provide stable support and a rotating environment for the middle part of the main shaft 9 and the rear end of the rotating shaft 10, ensuring that they can rotate smoothly. Two bearings 13 are equidistantly arranged on the middle side of the interior of the shell cover 2. The material and model of bearing 13 are similar to those of bearing 2 15, and provide support for the front ends of the main shaft 9 and the rotating shaft 10. Two top grooves 21 are equidistantly arranged on the interior of the shell cover 2. The size and shape of the top grooves 21 are determined according to the front end size of the main shaft 9 and the rotating shaft 10, so that the round rod 22 of the main shaft 9 and the rotating shaft 10 is loose when the main shaft 9 and the rotating shaft 10 rotate. A gasket 2 7 is provided between the shell 1 and the shell cover 2. The gasket 2 7 is generally made of rubber, and the model is determined according to the size of the shell 1 and the shell cover 2. A nameplate 11 is fixedly connected to the middle side of the front of the shell cover 2. The nameplate 11 is usually made of aluminum alloy, and the model is determined according to the amount and size of the marked information. Important information such as the model, specifications, and manufacturer of the gear oil pump can be marked to facilitate users to understand and use the equipment.

[0029] Working principle: First, the connecting flange 5 on the left side of the housing 1 is connected to the filter mechanism 4 to ensure smooth entry of oil, and the oil outlet flange 3 on the right side outputs the oil. When the filter needs to be flushed or replaced, first remove the square box 401 from the connecting flange 5. The squeezing force of the connecting flange 5 on the clamping rod 407 disappears, and the clamping rod 407 is separated from the cylindrical hole 4013 under the action of the spring 409. Then, unscrew the square 4012 with the cylindrical hole 4013 from the fan-shaped groove 404 for replacement. The stainless steel filter 4010 therein can effectively intercept solid particles in the oil, preventing these particles from entering the interior of the gear oil pump, thereby preventing damage to key components such as the gear 8;

[0030] Moreover, when the gear 8 is damaged, it can be replaced by itself. First, remove the housing cover 2 with the bearing 13. Then, use a tool to rotate the round rod 22 with the ring 3 19. The internal structural design of the round rod 22 allows it to cooperate with the internal thread groove 18 in the cylindrical groove 2 17 through the external thread 20 on the ring 3 19, thereby achieving fixation. When the round rod 22 moves forward, the inclined surface at the rear end of the round rod 22 will release the pressure on the inclined block 16, so that the inclined surface and the inclined block 16 are separated, and the gear 8 can be easily replaced at this time. Then, place the new gear 8 on the main shaft 9 or the rotating shaft 10, and then twist the round rod 22 backward. During this process, the inclined surface will push the inclined block 16 to move outward, so that the inclined block 16 is engaged with the square groove 14 on the middle side of the front part of the gear 8, thereby firmly fixing the gear 8 on the main shaft 9 and the rotating shaft 10.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-priming gear oil pump, characterized in that: include: A housing (1), wherein the middle sides of the left and right parts of the housing (1) are respectively fixedly connected with a connecting flange (5) and an oil outlet flange (3), the upper side of the interior of the housing (1) is rotatably connected with a main shaft (9), the rear end of the housing (1) is fixedly connected with a motor (23), the output end of the motor (23) is fixedly connected with the main shaft (9), the lower side of the interior of the housing (1) is rotatably connected with a rotating shaft (10), the main shaft (9) and the middle side of the front of the rotating shaft (10) are both provided with a quick-release assembly, the middle front side of the main shaft (9) and the middle of the rotating shaft (10) are both provided with a gear (8), and the front of the housing (1) and the housing cover (2) are fixed by a plurality of bolts (6); A filter mechanism (4) is connected to a connecting flange (5). The filter mechanism (4) is used to intercept solid particles in oil and protect key components. The filter mechanism (4) comprises a square box (401). The upper and lower sides of the interior of the square box (401) are both provided with long grooves (405). One side of the long grooves (405) is provided with fan-shaped grooves (404). The interiors of the fan-shaped grooves (404) are both clamped with square blocks (4012). A second circular ring (4011) is fixedly connected between the square blocks (4012). Two stainless steel filter screens (4010) are fixedly connected at equal distances to the middle side of the interior of the second circular ring (4011). A clamping assembly is provided on one side of the long grooves (405).

2. A self-priming gear oil pump according to claim 1, characterized in that: The locking assembly includes a cylindrical groove (406), which is opened on one side of the long groove (405), and one end of a spring (409) is fixedly connected to the right side of the inside of the cylindrical groove (406), and the other end of the spring (409) is fixedly connected to a ring (408), and the ring (408) slides inside the cylindrical groove (406). The middle part of the ring (408) is fixedly connected to a clamping rod (407), and a cylindrical hole (4013) is opened on the middle side of the right part of the block (4012), and the left end of the clamping rod (407) is clamped with the cylindrical hole (4013).

3. The self-priming gear oil pump according to claim 1, characterized in that: A quick-release assembly, the quick-release assembly includes a cylindrical groove 2 (17), the cylindrical groove 2 (17) is provided on the front middle side of the main shaft (9) and the rotating shaft (10), an internal thread groove (18) is provided on the middle front side of the cylindrical groove 2 (17), a round rod (22) is slidably provided inside the cylindrical groove 2 (17), a middle side of the round rod (22) is fixedly connected to a circular ring 3 (19), the outside of the circular ring 3 (19) is provided with an external thread (20), four inclined blocks (16) are equidistantly slidably connected to the middle side of the main shaft (9) and the rotating shaft (10), the rear end of the circular rod (22) is an inclined surface, the inclined blocks (16) are in contact with the inclined surface, and a plurality of square grooves (14) are provided on the front middle side of the gear (8), and the square grooves (14) are engaged with the inclined blocks (16).

4. The self-priming gear oil pump according to claim 1, characterized in that: Two bearings (15) are equidistantly arranged on the rear side of the interior of the housing (1); the middle portion of the main shaft (9) is fixedly connected to the interior of the upper bearing (15); the rear end of the rotating shaft (10) is fixedly connected to the lower bearing (15); two bearings (13) are equidistantly arranged on the middle side of the interior of the housing cover (2); and the front ends of the main shaft (9) and the rotating shaft (10) are both engaged with bearings (13).

5. The self-priming gear oil pump according to claim 1, characterized in that: The left portion of the connecting flange (5) is connected to the square box (401) via a plurality of bolts (12), and the left portion of the square box (401) is fixedly connected to an oil inlet flange (402).

6. The self-priming gear oil pump according to claim 1, characterized in that: Two top grooves (21) are equidistantly formed inside the shell cover (2), and the front ends of the main shaft (9) and the rotating shaft (10) are in contact with the top grooves (21).

7. The self-priming gear oil pump according to claim 1, characterized in that: A first gasket (403) is provided between the connecting flange (5) and the square box (401), and a second gasket (7) is provided between the shell (1) and the shell cover (2).

8. The self-priming gear oil pump according to claim 1, characterized in that: A nameplate (11) is fixedly connected to the front middle side of the shell cover (2).

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