Novel roller bit

Abstract

A novel roller bit comprises a bit seat, a plurality of palm backs are fixedly connected to the lower side wall of the bit seat, bearings are arranged on the inner side walls of the palm backs, cones are arranged on the outer sides of the bearings in a sleeving mode, oil storage shells are embedded in the outer side walls of the palm backs, partition plates are fixedly connected into the oil storage shells, and micro pumps are installed on the partition plates. An oil inlet channel and an oil discharge channel are formed between the palm back and the bearing, the input end of the micro pump communicates with an oil inlet pipe, and the output end of the micro pump communicates with the oil inlet channel. Compared with the prior art, the drill bit has the advantages that the oil storage shell, the micro pump, the oil inlet channel and the oil discharge channel are arranged, so that the bearing can be continuously lubricated, the frictional resistance is reduced, the rotating speed and the drilling efficiency of the drill bit are further improved, and the service life of the bearing and the service life of the cone are prolonged; and through the arranged oil cooling mechanism, the lubricating oil can be cooled in the circulating process, the working temperature of the bearing is effectively reduced, the viscosity of the lubricating oil can be more stable, and the lubricating effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of roller bit, especially a novel roller bit. BACKGROUND

[0002] The roller bit is the most widely used drilling bit. When the roller bit works, the cutting teeth alternately contact the well bottom, the rock breaking torque is small, the cutting tooth and the well bottom contact area is small, the specific pressure is high, and the formation is easily eaten; the total length of the working blade is large, so the wear is relatively reduced. The roller bit can adapt to various strata from soft to hard.

[0003] The traditional roller bit usually adopts a mechanical lubrication mode, that is, the lubricating oil is manually added regularly to reduce the bearing wear. However, this method has many deficiencies: first, the manual lubrication cannot guarantee the uniform distribution of the lubricating oil, which may cause local lubrication deficiency of the bearing and accelerate the wear; second, the maintenance process is relatively troublesome. In addition, in the use process of the existing roller bit, the bearing is prone to high temperature due to long-time high-speed operation, which leads to the decrease of the lubrication effect and further accelerates the bearing wear. SUMMARY

[0004] The main purpose of the utility model is to provide a novel roller bit, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme: a novel roller bit, comprising a bit seat, a plurality of palm backs are fixedly connected on the lower side wall of the bit seat, a bearing is arranged on the inner side wall of the palm back, a roller is sleeved outside the bearing, an oil storage shell is embedded on the outer side wall of the palm back, a partition plate is fixedly connected in the oil storage shell, a micro pump is installed on the partition plate, an oil inlet channel and an oil discharge channel are arranged between the palm back and the bearing, an oil inlet pipe is communicated with the input end of the micro pump and the output end is communicated with the oil inlet channel, and an oil cooling mechanism is further arranged in the oil storage shell.

[0006] As a further description of the above technical scheme, the oil cooling mechanism comprises a mounting seat, an electric refrigerating fin and a fin, the mounting seat is fixedly connected on the inner wall of the side of the oil storage shell away from the roller, the electric refrigerating fin is embedded in the mounting seat, and the fin is fixedly connected on the side wall of the mounting seat close to the roller.

[0007] As a further description of the above technical scheme, the fin is attached to the cold surface of the electric refrigerating fin.

[0008] As a further description of the above technical scheme, a first sealing ring is arranged between the bearing and the roller.

[0009] As a further description of the above technical scheme, a second sealing ring is arranged between the mounting seat and the oil storage shell.

[0010] As a further description of the above technical solutions, the oil storage shell has lubricating oil inside and below the partition plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. By setting up the oil storage shell, the micro pump, the oil inlet and the oil outlet, the bearing can be continuously lubricated, the frictional resistance is reduced, the rotation speed of the drill bit and the drilling efficiency are improved, and the service life of the bearing and the cone is prolonged.

[0013] 2. By setting up the oil cooling mechanism, the lubricating oil can be cooled during circulation, the bearing working temperature is effectively reduced, the viscosity of the lubricating oil is more stable, and the lubricating effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the novel cone bit.

[0015] Figure 2 It is a bearing structure schematic view of the novel cone bit.

[0016] Figure 3 It is a palm back sectional view of the novel cone bit.

[0017] Figure 4 It is an enlarged view of A of the novel cone bit.

[0018] Figure 5 It is a sectional view of the oil storage shell of the novel cone bit.

[0019] In the figure: 1, drill bit seat; 2, palm back; 3, bearing; 4, cone; 5, oil storage shell; 51, partition plate; 52, micro pump; 31, oil inlet; 32, oil outlet; 6, oil cooling mechanism; 61, mounting seat; 62, electric refrigerating fin; 63, fin; 33, first sealing ring; 611, second sealing ring. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features and achieved purposes of the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0021] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it is necessary to explain that, unless otherwise expressly provided and limited, the terms "installation", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Please refer to Figures 1-5 The utility model provides a novel drag bit, including drill bit seat 1, the lower side wall of drill bit seat 1 is fixedly connected with a plurality of palm dorsum 2, the inner side wall of palm dorsum 2 is equipped with bearing 3, bearing 3 outside is equipped with drag bit 4, the outer side wall of palm dorsum 2 is embedded with oil storage shell 5, oil storage shell 5 is fixedly connected with baffle 51 in, baffle 51 is installed with micro pump 52, oil inlet 31 and oil outlet 32 are set up between palm dorsum 2 and bearing 3, the input end of micro pump 52 is communicated with oil inlet pipe and the output end is connected with oil inlet 31, micro pump 52 can pump out the lubricating oil in oil storage shell 5 and transport to oil inlet 31, the lubricating oil enters the ball raceway in bearing 3 through oil inlet 31, lubricates the ball of bearing 3, under the continuous transmission of micro pump 52, under oil pressure, lubricating oil will flow back to oil storage shell 5 again through oil outlet 32, and circulate lubrication, ensure the lubrication effect of bearing 3, improve the service life, oil storage shell 5 is also equipped with oil cooling mechanism 6.

[0024] Specifically, as Figure 5As shown in the figure, a new type of drag bit, the oil cooling mechanism 6 includes a mounting seat 61, an electric refrigerating fin 62 and a fin 63, the oil storage shell 5 is fixedly connected with the mounting seat 61 on the inner wall of the side away from the drag bit 4, the electric refrigerating fin 62 is embedded in the mounting seat 61, the fin 63 is fixedly connected on the side wall of the mounting seat 61 close to the drag bit 4, under the action of the electric refrigerating fin 62, the fin 63 will continuously refrigerate and cool the lubricating oil in the oil storage shell 5, so that the circulating lubricating oil can cool the bearing 3, avoiding high temperature, and the mud generated during the working of the drag bit can cool the hot surface of the electric refrigerating fin 62, ensuring the normal refrigeration of the electric refrigerating fin 62.

[0025] Specifically, as shown in the figure, Figure 5 As shown in the figure, a new type of drag bit, the fin 63 is attached to the cold surface of the electric refrigerating fin 62, and the cold surface of the electric refrigerating fin 62 cools the lubricating oil through the fin 63.

[0026] Specifically, as shown in the figure, Figure 4 As shown in the figure, a new type of drag bit, the bearing 3 and the drag bit 4 are provided with a first sealing ring 33, which ensures the sealing between the bearing 3 and the drag bit 4.

[0027] Specifically, as shown in the figure, Figure 5 As shown in the figure, a new type of drag bit, the mounting seat 61 and the oil storage shell 5 are provided with a second sealing ring 611 to ensure the sealing between the mounting seat 61 and the oil storage shell 5, avoiding the mud into the oil storage shell 5.

[0028] Specifically, as shown in the figure, Figure 5 As shown in the figure, a new type of drag bit, the oil storage shell 5 has lubricating oil below the partition plate 51, which is used for lubricating the balls on the bearing 3.

[0029] It should be noted that the utility model is a new type of drag bit, when in use, the micro pump 52 can pump out the lubricating oil in the oil storage shell 5 and deliver it to the oil inlet 31, the lubricating oil enters the ball channel in the bearing 3 through the oil inlet 31, lubricates the balls of the bearing 3, under the continuous transmission of the micro pump 52, the lubricating oil will flow back to the oil storage shell 5 through the oil outlet 32 under the oil pressure, under the action of the electric refrigerating fin 62, the fin 63 will continuously refrigerate and cool the lubricating oil in the oil storage shell 5, so that the circulating lubricating oil can cool the bearing 3, avoiding high temperature.

[0030] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A new type of roller bit, comprising a bit seat (1), a plurality of palm dorsums (2) are fixedly connected on the lower side wall of the bit seat (1), a bearing (3) is arranged on the inner side wall of the palm dorsums (2), and a roller (4) is sleeved outside the bearing (3), characterized in that: The outer side wall of the palm back (2) is embedded with an oil storage shell (5), the oil storage shell (5) is fixedly connected with a partition plate (51), the partition plate (51) is installed with a micro pump (52), the palm back (2) and the bearing (3) are provided with an oil inlet channel (31) and an oil outlet channel (32), the input end of the micro pump (52) is communicated with an oil inlet pipe and the output end is communicated with the oil inlet channel (31), and the oil storage shell (5) is further provided with an oil cooling mechanism (6).

2. A new type of roller bit according to claim 1, characterized in that: The oil cooling mechanism (6) comprises a mounting seat (61), an electric refrigerating fin (62) and a fin (63), the inner wall of the side, away from the roller (4), of the oil storage shell (5) is fixedly connected with the mounting seat (61), the mounting seat (61) is embedded with the electric refrigerating fin (62), and the side wall, close to the roller (4), of the mounting seat (61) is fixedly connected with the fin (63).

3. A new type of roller bit according to claim 2, characterized in that: The fin (63) is attached to the cold surface of the electric refrigerating fin (62).

4. A new type of roller bit according to claim 1, characterized in that: The bearing (3) and the roller (4) are provided with a first sealing ring (33).

5. A new type of roller bit according to claim 2, characterized in that: The mounting seat (61) and the oil storage shell (5) are provided with a second sealing ring (611).

6. A new type of roller bit according to claim 2, characterized in that: The oil storage shell (5) is provided with lubricating oil below the partition plate (51).

Images