External leaking stoppage device for reduction gearbox shaft of oil pumping unit

Abstract

The utility model belongs to the technical field of reduction gearbox shaft leaking stoppage, and particularly relates to an oil pumping unit reduction gearbox shaft external leaking stoppage device which comprises a reduction gearbox body and an input shaft, the outer side of the reduction gearbox body is fixedly connected with a bottom cover through a bolt, and the side, opposite to the reduction gearbox body, of the bottom cover is fixedly connected with a first sealing ring. The intersection of the speed reducer body and the bottom cover is sealed through a first sealing ring, and the outer side of the bottom cover is fixedly connected with a sealing channel. The connecting ring is pushed to move by rotating the nut, the rubber sealing ball is pushed to move and tightly abut against the sealing channel for sealing, meanwhile, when the rubber sealing ball is extruded and deformed, the rubber sealing ball can be tightly attached to the outer wall of the input shaft for sealing, and then the function of sealing and plugging the portion between the reduction gearbox body and the input shaft on the outer side is achieved. Therefore, the purpose of external quick plugging is achieved, and the risk that a large amount of oil is lost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage plugging of reduction gearbox shafts, in particular to an external leakage plugging device for a reduction gearbox shaft of an oil pump. Background Art

[0002] The reduction box is a reduction device in the oil pumping equipment. Since the input shaft of the reduction box rotates at a high speed, oil leakage often occurs due to wear of the input shaft oil seal. If the oil loss is serious, it will cause serious wear inside the reduction box. Therefore, when oil leakage occurs between the reduction box and its input shaft, the entire machine needs to be shut down for maintenance and replacement. However, this method of shutting down the entire machine for maintenance and replacement requires a long waiting time for maintenance, which reduces the oil production rate of the oil well. It lacks the function of external temporary rapid plugging and cannot meet the use requirements.

[0003] The existing Chinese patent with announcement number CN214221968U discloses an external plugging device for the shaft of a pumping unit reducer, including two nuts welded on one side of the reducer body, and a conical sleeve with a sealing rotation sleeve arranged on the input shaft of the reducer. A plugging mechanism is arranged on one side of the reducer body, and the plugging mechanism includes a circular plate arranged on one side of the reducer body, the circular plate is made by splicing two semi-circular plates, and the sides of the two semi-circular plates close to each other are arranged as mutually matching inclined surfaces.

[0004] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the device realizes the function of sealing and plugging the outside of the reduction gearbox body and the reduction gearbox input shaft through the cooperation of a full-circle sealing ring, a conical sealing rubber sleeve, a conical sleeve and a sealing bearing, and the sealing bearing is welded to the outside of the input shaft. When the sealing bearing is aged, it is not convenient to replace it, which affects the sealing effect and needs to be improved; therefore, in view of the above-mentioned problem, an external leak-plugging device for the reduction gearbox shaft of an oil pump is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes an external leakage plugging device for a shaft of a reduction gearbox of an oil pumping unit.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model is an external leakage plugging device for the reducer shaft of an oil pumping unit, comprising a reducer body and an input shaft, the outer side of the reducer body is fastened with a bottom cover by bolts, the bottom cover is fixedly connected with a sealing ring on the opposite side of the reducer body, and the intersection of the reducer body and the bottom cover is sealed by a pair of sealing rings, the outer side of the bottom cover is fixedly connected with a sealing channel, the surface of the input shaft is sleeved with a rubber sealing ball and a connecting ring, the outer wall of the bottom cover is fixedly connected with a plurality of threaded columns, and the surface of the connecting ring corresponds to the threaded columns A connecting hole is opened at the place, and a nut is threadedly connected to the surface of the threaded column. When oil leakage occurs, the nut is rotated to push the connecting ring to move, and the rubber sealing ball is pushed to move and tightly press against the sealing channel for sealing. At the same time, when the rubber sealing ball is squeezed and deformed, it will also fit closely to the outer wall of the input shaft for sealing, thereby realizing the function of sealing and plugging between the reduction box body and the input shaft on the outside, thereby achieving the purpose of external quick plugging and reducing the risk of large-scale oil loss. Compared with the prior art, the rubber sealing ball is detachably sleeved on the outside of the input shaft for sealing, which will not hinder the plugging and unplugging of the input shaft.

[0007] Preferably, the bottom cover is coaxially arranged with the input shaft.

[0008] Preferably, the cross-section of the sealing channel is set to be a right-angled trapezoid.

[0009] Preferably, the connecting ring is composed of a ring body 1 and a ring body 2, and the ring body 1 and the ring body 2 are sleeved on the outer side of the input shaft.

[0010] Preferably, a spring is fixedly connected to the opposite side of ring body one and ring body two, and the spring is sleeved on the outside of the input shaft. Ring body one is pushed to move by rotating the nut, and the movement of ring body one pushes ring body two to squeeze the rubber sealing ball, and a certain pressure is applied by the spring, so that the rubber sealing ball can continue to fit tightly to the sealing channel and the input shaft even when worn, thereby improving the sealing effect.

[0011] Preferably, the sealing channel includes a shell, a receiving groove is provided inside the shell, a sliding ring is slidably connected inside the receiving groove, and the rubber sealing ball is easily embedded in the sealing channel when squeezed, making it inconvenient to remove. By pushing the raised layer to drive the sliding ring to slide, the rubber sealing ball can be pushed out of the sealing channel, making it easy to remove the rubber sealing ball embedded in the sealing channel.

[0012] Preferably, a second sealing ring is fixedly connected to the interior of the storage groove, and the gap between the shell and the sliding ring is sealed by the second sealing ring.

[0013] Preferably, a protrusion layer is fixedly connected to one end of the outer side of the sliding ring, and a notch is formed at one end of the outer side of the shell.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model drives the connecting ring to move by rotating the nut, drives the rubber sealing ball to move and tightly press against the sealing channel to seal. At the same time, when the rubber sealing ball is squeezed and deformed, it will also tightly fit the outer wall of the input shaft to seal, thereby realizing the function of sealing and plugging between the reduction box body and the input shaft on the outside, thereby achieving the purpose of external rapid leak plugging and reducing the risk of large-scale oil loss.

[0016] 2. The utility model applies a certain pressure through the spring, so that the rubber sealing ball can continue to fit tightly to the sealing channel and the input shaft even when it is worn, thereby improving the sealing effect. The rubber sealing ball can be pushed out of the sealing channel by pushing the raised layer to drive the sliding ring to slide, thereby facilitating the removal of the rubber sealing ball embedded in the sealing channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a schematic diagram of the partial structure of the main body of the reducer of the utility model;

[0019] Figure 2 This is a cross-sectional view of the sealing channel of the utility model;

[0020] Figure 3 For this utility model Figure 1 Schematic diagram of the expanded structure;

[0021] Figure 4 This is a schematic diagram of the connection between the housing and the sliding ring of the utility model;

[0022] Figure 5 This is a cross-sectional view of the sliding ring of the utility model.

[0023] In the figure: 1. reduction box body; 2. input shaft; 3. bottom cover; 4. sealing ring 1; 5. sealing channel; 51. housing; 52. storage groove; 53. sliding ring; 54. sealing ring 2; 55. raised layer; 56. notch; 6. rubber sealing ball; 7. connecting ring; 71. ring body 1; 72. ring body 2; 8. threaded column; 9. connecting hole; 10. nut; 12. spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] See also Figure 1-3 As shown, a pumping unit reduction gearbox shaft external plugging device comprises a reduction gearbox body 1 and an input shaft 2, the outer side of the reduction gearbox body 1 is fastened with a bottom cover 3 by bolts, the bottom cover 3 is fixedly connected to the opposite side of the reduction gearbox body 1 with a sealing ring 4, the intersection of the reduction gearbox body and the bottom cover 3 is sealed by the sealing ring 4, the outer side of the bottom cover 3 is fixedly connected with a sealing channel 5, the surface of the input shaft 2 is sleeved with a rubber sealing ball 6 and a connecting ring 7, the outer wall of the bottom cover 3 is fixedly connected with a plurality of threaded columns 8, the surface of the connecting ring 7 is provided with connecting holes 9 corresponding to the threaded columns 8, and the surface of the threaded columns 8 is threaded. The thread is connected with a nut 10. When oil leakage occurs, the nut 10 is rotated to push the connecting ring 7 to move, and the rubber sealing ball 6 is pushed to move and tightly press against the sealing channel 5 for sealing. At the same time, the rubber sealing ball 6 will also fit closely to the outer wall of the input shaft 2 for sealing when it is squeezed and deformed, thereby realizing the function of sealing and plugging on the outside between the reduction box body 1 and the input shaft 2, thereby achieving the purpose of external quick plugging and reducing the risk of large-scale oil loss. Compared with the prior art, the rubber sealing ball 6 is detachably sleeved on the outside of the input shaft 2 for sealing, which will not hinder the plugging, unplugging and loading and unloading of the input shaft 2.

[0027] The bottom cover 3 is coaxially arranged with the input shaft 2 .

[0028] The cross section of the sealing channel 5 is set to be a right-angled trapezoid.

[0029] The connecting ring 7 is composed of a ring body 1 71 and a ring body 2 72 , and the ring body 1 71 and the ring body 2 72 are sleeved on the outer side of the input shaft 2 .

[0030] A spring 12 is fixedly connected to the opposite side of the ring body 1 71 and the ring body 2 72. The spring 12 is sleeved on the outer side of the input shaft 2. The ring body 1 71 is pushed to move by rotating the nut 10, and the movement of the ring body 1 71 pushes the ring body 2 72 to squeeze the rubber sealing ball 6. The spring 12 applies a certain pressure, so that the rubber sealing ball 6 can continue to fit tightly to the sealing channel 5 and the input shaft 2 even when worn, thereby improving the sealing effect.

[0031] Embodiment 2

[0032] For comparison with Example 1, please refer to Figure 4-5As shown, the utility model provides another embodiment, the sealing channel 5 includes a shell 51, the interior of the shell 51 is provided with a receiving groove 52, the interior of the receiving groove 52 is slidably connected with a sliding ring 53, the rubber sealing ball 6 is easily embedded in the interior of the sealing channel 5 when squeezed, and it is not convenient to take it out, and the rubber sealing ball 6 can be pushed out of the sealing channel 5 by pushing the raised layer 55 to drive the sliding ring 53 to slide, so that the rubber sealing ball 6 embedded in the sealing channel 5 can be easily taken out.

[0033] A second sealing ring 54 is fixedly connected to the interior of the receiving groove 52 , and the second sealing ring 54 is used to seal the gap between the housing 51 and the sliding ring 53 .

[0034] A protrusion layer 55 is fixedly connected to one end of the outer side of the sliding ring 53 , and a notch 56 is formed at one end of the outer side of the shell 51 .

[0035] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art.

[0036] Working principle: when oil leakage occurs, rotating nut 10 pushes connecting ring 7 to move, pushes rubber sealing ball 6 to move and tightly presses against sealing channel 5 for sealing. At the same time, when rubber sealing ball 6 is squeezed and deformed, it will also fit tightly against the outer wall of input shaft 2 for sealing, thereby realizing the function of sealing and plugging on the outside between reduction box body 1 and input shaft 2, thereby achieving the purpose of external quick plugging and reducing the risk of large amount of oil loss. Compared with the prior art, the rubber sealing ball 6 is detachably sleeved on the outside of input shaft 2 for sealing, which will not hinder the plugging and unplugging of input shaft 2.

[0037] The nut 10 is rotated to push the ring body 1 71 to move, and the movement of the ring body 1 71 pushes the ring body 2 72 to squeeze the rubber sealing ball 6, and the spring 12 applies a certain pressure, so that the rubber sealing ball 6 can continue to fit tightly to the sealing channel 5 and the input shaft 2 when worn, thereby improving the sealing effect.

[0038] After use, the rubber sealing ball 6 can be pushed out of the sealing channel 5 by pushing the protruding layer 55 to drive the sliding ring 53 to slide, so as to facilitate taking out the rubber sealing ball 6 embedded in the sealing channel 5 .

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An external plugging device for a reduction gearbox shaft of an oil pumping unit, comprising a reduction gearbox body (1) and an input shaft (2), characterized in that: The outer side of the reduction box body (1) is fastened with a bottom cover (3) by bolts, the bottom cover (3) is fixedly connected to a sealing ring (4) on the side opposite to the reduction box body (1), the outer side of the bottom cover (3) is fixedly connected to a sealing channel (5), the surface of the input shaft (2) is sleeved with a rubber sealing ball (6) and a connecting ring (7), the outer wall of the bottom cover (3) is fixedly connected to a plurality of threaded columns (8), the surface of the connecting ring (7) is provided with connecting holes (9) corresponding to the threaded columns (8), and the surface of the threaded columns (8) is threadedly connected to a nut (10).

2. The external leakage plugging device for the reduction gearbox shaft of the oil pumping unit according to claim 1 is characterized in that: The bottom cover (3) is coaxially arranged with the input shaft (2).

3. The external leakage plugging device for the reduction gearbox shaft of the oil pumping unit according to claim 1 is characterized in that: The cross section of the sealing channel (5) is configured as a right-angle trapezoid.

4. The external leakage plugging device for the reduction gearbox shaft of the oil pumping unit according to claim 1 is characterized in that: The connecting ring (7) is composed of a first ring body (71) and a second ring body (72), and the first ring body (71) and the second ring body (72) are sleeved on the outside of the input shaft (2).

5. The external leakage plugging device for the reduction gearbox shaft of the oil pumping unit according to claim 4 is characterized in that: A spring (12) is fixedly connected to the opposite side of the ring body 1 (71) and the ring body 2 (72), and the spring (12) is sleeved on the outside of the input shaft (2).

6. The external leakage plugging device for the reduction gearbox shaft of the oil pumping unit according to claim 1 is characterized in that: The sealing channel (5) comprises a shell (51), a receiving groove (52) is provided inside the shell (51), and a sliding ring (53) is slidably connected inside the receiving groove (52).

7. The external leakage plugging device for the reduction gearbox shaft of the oil pumping unit according to claim 6 is characterized in that: A second sealing ring (54) is fixedly connected inside the storage groove (52).

8. The external leakage plugging device for the reduction gearbox shaft of the oil pumping unit according to claim 6 is characterized by: One end of the outer side of the sliding ring (53) is fixedly connected to a raised layer (55), and one end of the outer side of the shell (51) is provided with a notch (56).

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