Deflation valve silencer for petroleum drilling

Abstract

The invention relates to the technical field of deflation valve silencers for petroleum drilling, in particular to a deflation valve silencer for petroleum drilling, which comprises a deflation pipe, a support component is arranged on the deflation pipe, and a power component is arranged in the deflation pipe; a transmission assembly is further arranged on the deflation pipe, a shaking assembly is arranged in the silencer assembly and used for cleaning impurities in the silencer assembly, and the power assembly drives the shaking assembly through the transmission assembly. By arranging the power assembly and the shaking assembly, when high-speed airflow passes through the deflation pipe, fan blades are driven to rotate to serve as a power source, then the shaking assembly (a rotating rod, a shaking rod and a shaking ball) is driven to rotate through the transmission assembly, and in the rotating process, the shaking ball drives the shaking rod to be opened under the action of centrifugal force and collides with the inner wall of the inner barrel; in this way, the purpose that the silencer can be maintained and cleaned without being disassembled is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of an air bleed valve silencer for oil well drilling, in particular to an air bleed valve silencer for oil well drilling. Background Art

[0002] The bleed valve silencer for oil drilling is a device specially designed to reduce the noise level generated when gas is discharged during the drilling process. In oil drilling operations, especially in air drilling or gas drilling, a large amount of compressed gas is used to drive the drilling equipment. When these gases need to be released (for example, when testing the wellhead device or in an emergency), the gas is quickly discharged through the bleed valve, which will generate very high noise levels, which not only poses a hearing health risk to the operators, but may also have an impact on the surrounding ecological environment.

[0003] In actual use, dust or scale may accumulate inside the muffler after long-term use, affecting the silencing effect. The muffler is usually welded or flanged to the bleed valve, which is inconvenient to disassemble and clean. Sometimes, if it encounters blockage during use, it needs to be shut down for maintenance, which seriously affects work.

[0004] Based on this, the present invention discloses a bleed valve silencer for oil drilling. Summary of the invention

[0005] In order to solve the problems raised in the background technology, the purpose of the present invention is to provide a bleed valve silencer for oil drilling, which is provided with a power component and a shaking component. When a high-speed airflow passes through the bleed pipe, the fan blades are driven to rotate as a power source, and then the shaking component (rotating rod, shaking rod and vibration ball) is driven to rotate through the transmission component. During the rotation, the vibration ball drives the shaking rod to open under the action of centrifugal force and hits the inner wall of the inner tube; so as to achieve the purpose of maintaining and cleaning the silencer without disassembling the silencer.

[0006] To achieve the above-mentioned purpose, a bleed valve silencer for oil drilling includes a bleed pipe, one end of which is connected to the bleed valve, and the other end of which is connected to the silencer assembly; Wherein, a support assembly is arranged on the vent pipe, a power assembly is arranged in the vent pipe, the support assembly is used to fix the power assembly, the power assembly is driven by high-speed airflow, and the power assembly can be manually controlled to start and stop; The exhaust pipe is also provided with a transmission assembly, and the silencer assembly is provided with a shaking assembly for cleaning impurities inside the silencer assembly, and the power assembly drives the shaking assembly through the transmission assembly.

[0007] As a further improvement of the present technical solution, the muffler assembly includes an outer cylinder, which is fixedly connected to the exhaust end of the exhaust pipe, an inner cylinder is fixedly connected to the outer cylinder, the inner cylinder is communicated with the exhaust pipe, a plurality of air holes are opened on the inner cylinder, and a plurality of partitions are fixedly provided in the outer cylinder, and the outer cylinder and the inner cylinder are divided into a plurality of chambers by the partitions.

[0008] As a further improvement of the technical solution, the support assembly includes a bracket fixedly mounted on the outer wall of the vent pipe, a mounting rod is fixedly mounted on the bracket, one end of the mounting rod is fixedly connected to the bracket, and the other end extends into the interior of the vent pipe.

[0009] As a further improvement of the present technical solution, the power assembly includes a telescopic cylinder rotatably connected to the air vent pipe, and the telescopic cylinder is sleeved on the mounting rod, and the telescopic cylinder is movably connected to the mounting rod, one end of the telescopic cylinder located in the air vent pipe is fixedly connected with a sliding sleeve, the sliding sleeve is sleeved on the mounting rod, the sliding sleeve is movably connected to the mounting rod, one end of the telescopic cylinder located outside the air vent pipe is fixedly connected with a push-pull block for controlling the extension and retraction of the telescopic cylinder, a plurality of connecting rods are rotatably connected to the sliding sleeve, one end of the connecting rod is rotatably connected to the sliding sleeve, and the other end is rotatably connected to the fan blades, and the fan blades are rotatably connected to a fixed disk, and the fixed disk is rotatably connected to the top end of the mounting rod located in the air vent pipe. Preferably, the transmission assembly includes a first bevel gear fixedly connected to one end of the telescopic cylinder located outside the deflation pipe, and also includes a second bevel gear, the second bevel gear is fixedly connected to one end of a transmission rod, the transmission rod is rotatably connected to the deflation pipe, and the other end of the transmission rod is fixedly connected to a first pulley.

[0010] As a further improvement of the present technical solution, the shaking assembly includes a rotating rod, the top of the rotating rod is rotatably connected to the top of the outer cylinder, the bottom of the rotating rod extends to the middle position of the inner cylinder, and the bottom end of the rotating rod is symmetrically provided with a storage groove, the shaking rod is rotatably connected in the storage groove, and the bottom end of the shaking rod and the rotating connection of the storage groove are fixedly connected with a torsion spring, and a sliding groove is provided in the top of the shaking rod, the sliding groove is slidably connected to a limiting plate, and limiting grooves are symmetrically provided on both sides of the sliding groove, and a limiting block is slidably connected in the limiting groove, and the limiting block is fixedly connected to the limiting plate, the inner wall of the bottom end of the sliding groove is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to the bottom end of the limiting plate, the top of the limiting plate is fixedly connected to one end of the pull rope, and the other end of the pull rope is fixedly connected to the vibration ball, and the vibration ball is initially located at the top of the shaking rod located in the storage groove.

[0011] Preferably, a second pulley is fixedly connected to the top end of the rotating rod, and the first pulley is connected to the second pulley via a belt drive.

[0012] As a further improvement of the technical solution, when the telescopic tube slides to a limit in a direction away from the fan blade, the fan blade fits against the mounting rod.

[0013] Preferably, when the telescopic cylinder slides to the limit in the direction of the fan blades, a plurality of the fan blades are fully opened, and a plurality of the fan blades are located at the center axis of the air release pipe when fully opened, and at this time, the first bevel gear is meshed with the second bevel gear; The distance that the sliding sleeve slides on the mounting rod corresponds to the distance that the fan blade slides from closing to opening, and matches the length of the mounting rod inside the air venting pipe.

[0014] As a further improvement of the technical solution, the centrifugal force generated by the vibration ball when the rotating rod rotates is sufficient to overcome the torsion force of the torsion spring that causes the shaking rod to be in a vertical state; The elastic force of the spring is sufficient to limit the vibration ball to be located on the top end of the shaking rod located in the receiving groove when the rotating rod is not rotating; When the height of the limiting groove is in a horizontal position with the shaking rod, the distance that the vibration ball slides to the inner wall of the inner tube matches.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the bleed valve silencer for oil drilling, by setting the power assembly (fan blades and telescopic cylinder) and the transmission assembly (first bevel gear, second bevel gear and transmission rod), when the high-speed airflow passes through the bleed pipe, the fan blades are driven to rotate, thereby driving the telescopic cylinder and the first bevel gear to rotate. This design makes effective use of the airflow energy and converts it into mechanical energy, which is conducive to driving the subsequent components to work, thereby realizing the automatic cleaning function without the need for an additional power source.

[0016] 2. In the bleed valve silencer for oil drilling, the shaking assembly (rotating rod, shaking rod and vibration ball) is driven to rotate through the transmission assembly. During the rotation, the vibration ball drives the shaking rod to open under the action of centrifugal force and hits the inner wall of the inner tube to achieve the purpose of cleaning impurities. This design cleverly converts the rotational motion into reciprocating impact, which is conducive to effectively removing impurities on the inner tube, preventing blockage, and improving the maintenance efficiency and performance of the silencer assembly.

[0017] 3. In the bleed valve silencer for oil drilling, the support assembly (mounting rod and bracket) is firmly installed on the bleed pipe, providing a reliable support platform for the power assembly. This stable installation structure is conducive to ensuring the stable operation of the power assembly under the action of high-speed airflow, while reducing vibration and noise, and improving the stability and durability of the overall structure.

[0018] 4. In the bleed valve silencer for oil drilling, when the telescopic tube slides to the limit position, the fan blade fits with the mounting rod, which not only reduces the space occupied by the power component in the bleed pipe, but also avoids the impact on the airflow when not working. This design is conducive to reducing energy consumption and resistance when cleaning is not required, and improving the efficiency of the overall system.

[0019] 5. In the bleed valve silencer for oil drilling, the telescopic cylinder is manually controlled by the push-pull block to control the opening and closing of the fan blades and the start and stop of the power assembly. This design allows users to conveniently control the cleaning process as needed without complicated operations or additional tools, which improves the convenience and flexibility of use.

[0020] 6. In the bleed valve silencer for oil drilling, the power component (telescopic tube, fan blades, etc.) can be retracted to the minimum volume when not working, and the shaking rod and vibration ball in the shaking component can be automatically recovered when not working, reducing the impact on the airflow, which is beneficial to maintaining smooth airflow inside the bleed pipe and reducing the impact on the original equipment layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural cross-sectional view of the muffler assembly of the present invention; Figure 3 It is a structural schematic diagram of the cleaning mechanism of the present invention; Figure 4 For the present invention Figure 2 A magnified view of the structure at A; Figure 5 It is a schematic diagram of the structure of the power assembly of the present invention; Figure 6 It is a partial structural cross-sectional view of the cleaning assembly of the present invention; Figure 7 It is a partial structural cross-sectional view of the shaking rod of the present invention; Figure 8 For the present invention Figure 6 A magnified view of the structure at B in FIG. Fig. 9 For the present invention Figure 7 Enlarged view of the structure at position C in the figure.

[0022] The meaning of each number in the figure is: 1. Exhaust pipe; 2. Muffler assembly; 3. Support assembly; 4. Power assembly; 5. Transmission assembly; 6. Shaking assembly; 21. Outer tube; 22. Inner tube; 23. Partition; 31. Mounting rod; 32. Bracket; 41. Telescopic cylinder; 42. Sliding sleeve; 43. Connecting rod; 44. Fan blade; 45. Fixed plate; 46. Push-pull block; 51. first bevel gear; 52. second bevel gear; 53. transmission rod; 54. first pulley; 55. second pulley; 61. Rotating rod; 62. Storage slot; 63. Shaking rod; 64. Vibrating ball; 65. Torsion spring; 66. Slide slot; 67. Limiting slot; 68. Limiting block; 69. Limiting disk; 69a. Pull rope; 69b. Spring. DETAILED DESCRIPTION

[0023] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0024] Existing silencers often encounter clogging problems when used, are difficult to disassemble, and are time-consuming and labor-intensive to maintain.

[0025] For this purpose, the present invention provides a vent valve silencer for oil drilling, see Figure 1 As shown, it includes an air release pipe 1, one end of which is connected to the air release valve, and the other end is connected to the muffler assembly 2; the air release valve is arranged in this way to reduce noise when releasing air.

[0026] For details, see Figure 1-Figure 3 As shown, a support assembly 3 is provided on the vent pipe 1, and a power assembly 4 is provided in the vent pipe 1. The support assembly 3 is used to fix the power assembly 4. The power assembly 4 is driven by a high-speed airflow, and the power assembly 4 can be manually controlled to start and stop; A transmission assembly 5 is also provided on the exhaust pipe 1 , and a shaking assembly 6 is provided in the muffler assembly 2 for cleaning impurities inside the muffler assembly 2 . The power assembly 4 drives the shaking assembly 6 through the transmission assembly 5 .

[0027] For further information, see Figure 1 and Figure 2 As shown, the muffler assembly 2 includes an outer cylinder 21, which is fixedly connected to the exhaust end of the exhaust pipe 1, and an inner cylinder 22 is fixedly connected inside the outer cylinder 21. The inner cylinder 22 is connected to the exhaust pipe 1, and a plurality of air holes are opened on the inner cylinder 22. A plurality of partitions 23 are fixedly arranged inside the outer cylinder 21, and the outer cylinder 21 and the inner cylinder 22 are separated into a plurality of chambers by the partitions 23.

[0028] Among them, see Figure 3 and Figure 4As shown, the support assembly 3 includes a bracket 32 ​​fixed on the outer wall of the vent pipe 1 , and a mounting rod 31 is fixed on the bracket 32 ​​. One end of the mounting rod 31 is fixedly connected to the bracket 32 ​​, and the other end extends to the inside of the vent pipe 1 .

[0029] In addition, see Figure 3-Figure 5 As shown, the power assembly 4 includes a telescopic cylinder 41 rotatably connected to the vent pipe 1, and the telescopic cylinder 41 is sleeved on the mounting rod 31, and the telescopic cylinder 41 is movably connected to the mounting rod 31, one end of the telescopic cylinder 41 located in the vent pipe 1 is fixedly connected with a sliding sleeve 42, the sliding sleeve 42 is sleeved on the mounting rod 31, the sliding sleeve 42 is movably connected to the mounting rod 31, and one end of the telescopic cylinder 41 located outside the vent pipe 1 is fixedly connected with a push-pull block 46 for controlling the extension and retraction of the telescopic cylinder 41, a plurality of connecting rods 43 are rotatably connected to the sliding sleeve 42, one end of the connecting rod 43 is rotatably connected to the sliding sleeve 42, and the other end is rotatably connected to the fan blades 44, and the fan blades 44 are rotatably connected to the fixed disk 45, and the fixed disk 45 is rotatably connected to the top end of the mounting rod 31 located in the vent pipe 1.

[0030] Furthermore, see Figure 3 and Figure 5 As shown, the transmission assembly 5 includes a first bevel gear 51 fixedly connected to one end of the telescopic cylinder 41 located outside the deflation pipe 1, and also includes a second bevel gear 52, the second bevel gear 52 is fixedly connected to one end of a transmission rod 53, the transmission rod 53 is rotatably connected to the deflation pipe 1, and the other end of the transmission rod 53 is fixedly connected to a first pulley 54.

[0031] For details, see Figure 2 and Figure 6-Figure 9 As shown, the shaking assembly 6 includes a rotating rod 61, the top of the rotating rod 61 is rotatably connected to the top of the outer cylinder 21, the bottom of the rotating rod 61 extends to the middle of the inner cylinder 22, and a receiving groove 62 is symmetrically opened on the bottom of the rotating rod 61. A shaking rod 63 is rotatably connected in the receiving groove 62, and a torsion spring 65 is fixedly connected to the rotating connection between the bottom end of the shaking rod 63 and the receiving groove 62. A sliding groove 66 is opened in the top of the shaking rod 63, and the sliding groove 66 is slidably connected to the limit plate 69. Both sides of the sliding groove 66 A limiting groove 67 is symmetrically provided, and a limiting block 68 is slidably connected in the limiting groove 67. The limiting block 68 is fixedly connected to the limiting plate 69. The inner wall of the bottom end of the slide groove 66 is fixedly connected to one end of a spring 69b, and the other end of the spring 69b is fixedly connected to the bottom end of the limiting plate 69. The top end of the limiting plate 69 is fixedly connected to one end of a pull rope 69a, and the other end of the pull rope 69a is fixedly connected to the vibration ball 64. In the initial state, the vibration ball 64 is located at the top end of the shaking rod 63 in the storage groove 62.

[0032] For further information, see Figure 1 and Figure 2As shown, the second pulley 55 is fixedly connected to the top of the rotating rod 61, and the first pulley 54 and the second pulley 55 are connected by belt transmission; the rotating rod 61 and the transmission rod 53 can also be connected by gear transmission, direct transmission, etc., and the present invention only takes belt transmission as an example.

[0033] Preferably, see Figure 2-Figure 5 As shown, when the telescopic cylinder 41 slides to the limit in the direction away from the fan blade 44, the fan blade 44 fits with the mounting rod 31; at this time, the first bevel gear 51 is disengaged from the second bevel gear 52, the shaking assembly 6 is no longer driven, and the fan blade 44 is retracted to fit with the mounting rod 31, so that the high-speed airflow no longer acts on the fan blade 44, and no driving source is generated. The reason for such a setting is that it ensures convenience when the power source is disconnected, and at the same time, the fan blade 44 fits with the mounting rod 31, which can reduce the space of the entire power assembly 4 in the exhaust pipe 1, thereby reducing the impact on the airflow in the exhaust pipe 1 when the power assembly 4 is not needed to work; It is worth adding that the friction between the telescopic cylinder 41 and the bleed pipe 1 can ensure that the position of the telescopic cylinder 41 will not slide at will unless there is human interference. However, the connection between the telescopic cylinder 41 and the bleed pipe 1 uses a sealed bearing to ensure that the rotation of the telescopic cylinder 41 is not affected by the friction. At the same time, there is a certain gap between the telescopic cylinder 41 and the mounting rod 31 to ensure that there is no friction between the telescopic cylinder 41 and the mounting rod 31 when the telescopic cylinder 41 rotates. In addition, the connection between the telescopic cylinder 41 and the bleed pipe 1 needs to be sealed to ensure that there is no leakage after the telescopic cylinder 41 completes the telescopic action.

[0034] In addition, if Figure 2 and Figure 5 As shown, when the telescopic cylinder 41 slides to the limit in the direction of the fan blades 44, a plurality of fan blades 44 are fully opened. When the plurality of fan blades 44 are fully opened, they are located at the central axis position of the air release pipe 1, and at this time, the first bevel gear 51 is meshed with the second bevel gear 52; the placement of the fan blades 44 at the central axis position of the air release pipe 1 can make the design area of ​​the fan blades 44 larger, and thus the fan blades 44 can obtain a greater driving force; and when the telescopic cylinder 41 pushes the sliding sleeve 42 to make the fan blades 44 fully opened, at this time, the first bevel gear 51 on the telescopic cylinder 41 is also moving toward the second bevel gear 52, and when the fan blades 44 are fully opened, the first bevel gear 51 is meshed with the second bevel gear 52, so that the high-speed airflow drives the fan blades 44 to rotate, driving the telescopic cylinder 41 to rotate, and then it can be transmitted to the shaking component 6 through the first bevel gear 51 and the second bevel gear 52, thereby realizing the cleaning of the inner cylinder 22; The distance that the sliding sleeve 42 slides on the mounting rod 31 from closing to opening of the fan blade 44 matches the length of the mounting rod 31 inside the air venting pipe 1; the length of the mounting rod 31 inside the air venting pipe 1 satisfies the distance that the sliding sleeve 42 slides to make the fan blade 44 slide from a fully closed state in contact with the mounting rod 31 to a fully opened state.

[0035] In addition, Figure 6-Figure 9 As shown, the centrifugal force generated by the vibration ball 64 when the rotating rod 61 rotates is sufficient to overcome the torsion of the torsion spring 65 that causes the shaking rod 63 to be in a vertical state; it should be supplemented that when the rotating rod 61 rotates, the weight of the vibration ball 64 satisfies that the centrifugal force generated by the rotation of the rotating rod 61 is greater than the torsion of the torsion spring 65, so that when the vibration ball 64 rotates, it will drive the shaking rod 63 to open outward, and the more the shaking rod 63 is opened, according to the centrifugal force formula F=mω²r, the greater the centrifugal force of the vibration ball 64 will be, thereby driving the shaking rod 63 to open to a horizontal position; The elastic force of the spring 69b is sufficient to limit the vibration ball 64 to be located on the top of the shaking rod 63 in the storage groove 62 when the rotating rod 61 is not rotating; in this way, when the rotating rod 61 stops rotating, the torsion spring 65 will drive the shaking rod 63 back to the storage groove 62, and the vibration ball 64 will lose the centrifugal force. At the same time, the spring 69b will pull the vibration ball 64 to the top of the shaking rod 63 and also retract it into the storage groove 62. This arrangement is the same as the principle of fitting with the mounting rod 31 when the fan blade 44 is not in use. When the shaking assembly 6 is not needed to work, the shaking rod 63 and the vibration ball 64 are both retracted into the storage groove 62, which will reduce the impact on the normal operation of the airflow in the inner tube 22. After being retracted, the space area is greatly reduced compared to when it is working. When the height of the limit groove 67 is in a horizontal position with the shaking rod 63, the distance between the vibration ball 64 and the inner wall of the inner cylinder 22 matches; in this way, when the shaking rod 63 is in a horizontal position and rotates, the vibration ball 64 pulls the limit plate 69 through the pull rope 69a to slide in the limit groove 67, and after the vibration ball 64 hits the inner wall of the inner cylinder 22, it will be bounced back due to the elasticity of the inner cylinder 22, and then the centrifugal force drives the vibration ball 64 to hit the inner cylinder 22 again, and so on, so as to achieve the purpose of cleaning the impurities on the inner cylinder 22, and the role of the limit groove 67 is to limit the limit plate 69 from being separated from the slide groove 66, and at the same time, the vibration ball 64 is separated from or extends too long compared to the slide groove 66, so that the effect of repeated impact and rebound cannot be achieved.

[0036] Working principle: When it is necessary to clean and maintain the inner cylinder 22 during specific use, first push the telescopic cylinder 41 through the push-pull block 46 to slide until the fan blades 44 are fully opened. At this time, the first bevel gear 51 and the second bevel gear 52 are meshed, and the high-speed airflow acts on the fan blades 44, driving the fan blades 44 to rotate, thereby driving the telescopic cylinder 41 to rotate. There is a sealed bearing at the connection between the telescopic cylinder 41 and the air release pipe 1, which can rotate. At the same time, the telescopic cylinder 41 is further sealed after being moved to prevent air leakage; the rotation of the telescopic cylinder 41 drives the first bevel gear 51 to rotate, and then drives the rotating rod 61 to rotate through the transmission; The rotation of the rotating rod 61 drives the vibration ball 64 to move outward and rotate, thereby overcoming the torsion of the torsion spring 65, causing the shaking rod 63 to begin to open until it is in a horizontal position. At this time, the vibration ball 64 continues to drive the limit plate 69 to slide in the limit groove 67 through the pull rope 69a due to the centrifugal force. When the limit plate 69 slides to the limit position, the vibration ball 64 can just hit the inner cylinder 22. At this time, the vibration ball 64 will rebound, and the spring 69b will also pull the vibration ball 64 back. Then, under the action of centrifugal force, it continues to slide outward and hit the inner cylinder 22, and then rebounds. This reciprocating process achieves the purpose of cleaning the impurities on the inner cylinder 22; the impurities after cleaning are directly taken away and blown to the outside air by the high-speed airflow, and a small part of them remain. The purpose of cleaning can be achieved by cleaning multiple times. Even if it cannot be completely cleaned, the number and cycle of shutdown maintenance can be reduced. This effectively solves the problem that existing mufflers are often blocked during use, and the problems of being difficult to disassemble and time-consuming and labor-intensive to maintain are solved.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bleed valve silencer for oil drilling, comprising a bleed pipe (1), one end of which is connected to the bleed valve, and the other end of which is connected to the silencer assembly (2), characterized in that: A support assembly (3) is arranged on the air release pipe (1), a power assembly (4) is arranged inside the air release pipe (1), the support assembly (3) is used to fix the power assembly (4), the power assembly (4) is driven by a high-speed airflow, and the power assembly (4) can be manually controlled to start and stop; The exhaust pipe (1) is also provided with a transmission assembly (5), and the silencer assembly (2) is provided with a shaking assembly (6) for cleaning impurities inside the silencer assembly (2), and the power assembly (4) drives the shaking assembly (6) via the transmission assembly (5).

2. The bleed valve silencer for oil drilling according to claim 1, characterized in that: The muffler assembly (2) comprises an outer cylinder (21), the outer cylinder (21) being fixedly connected to the exhaust end of the exhaust pipe (1), an inner cylinder (22) being fixedly connected inside the outer cylinder (21), the inner cylinder (22) being in communication with the exhaust pipe (1), a plurality of air holes being provided on the inner cylinder (22), a plurality of partitions (23) being fixedly provided inside the outer cylinder (21), and the outer cylinder (21) and the inner cylinder (22) being separated into a plurality of chambers by the partitions (23).

3. The bleed valve silencer for oil drilling according to claim 2, characterized in that: The support assembly (3) comprises a bracket (32) fixedly mounted on the outer wall of the vent pipe (1), a mounting rod (31) fixedly mounted on the bracket (32), one end of the mounting rod (31) being fixedly connected to the bracket (32) and the other end extending into the interior of the vent pipe (1).

4. The bleed valve silencer for oil drilling according to claim 3, characterized in that: The power assembly (4) comprises a telescopic cylinder (41) rotatably connected to the deflation pipe (1), the telescopic cylinder (41) being sleeved on the mounting rod (31), and the telescopic cylinder (41) being movably connected to the mounting rod (31), one end of the telescopic cylinder (41) located in the deflation pipe (1) being fixedly connected to a sliding sleeve (42), the sliding sleeve (42) being sleeved on the mounting rod (31), the sliding sleeve (42) being movably connected to the mounting rod (31), and the telescopic cylinder One end of the exhaust pipe (41) located outside the exhaust pipe (1) is fixedly connected to a push-pull block (46) for controlling the extension and retraction of the telescopic cylinder (41). The sliding sleeve (42) is rotatably connected to a plurality of connecting rods (43). One end of the connecting rod (43) is rotatably connected to the sliding sleeve (42), and the other end is rotatably connected to the fan blade (44). The fan blade (44) is rotatably connected to a fixed plate (45). The fixed plate (45) is rotatably connected to the top end of the mounting rod (31) located inside the exhaust pipe (1).

5. The bleed valve silencer for oil drilling according to claim 4, characterized in that: The transmission assembly (5) comprises a first bevel gear (51) fixedly connected to one end of the telescopic cylinder (41) located outside the deflation pipe (1), and also comprises a second bevel gear (52), the second bevel gear (52) being fixedly connected to one end of a transmission rod (53), the transmission rod (53) being rotatably connected to the deflation pipe (1), and the other end of the transmission rod (53) being fixedly connected to a first pulley (54).

6. The bleed valve silencer for oil drilling according to claim 5, characterized in that: The shaking assembly (6) comprises a rotating rod (61), the top end of the rotating rod (61) is rotatably connected to the top end of the outer tube (21), the bottom end of the rotating rod (61) extends to the middle position of the inner tube (22), the bottom end of the rotating rod (61) is symmetrically provided with a receiving groove (62), a shaking rod (63) is rotatably connected in the receiving groove (62), and a torsion spring (65) is fixedly connected at the rotation connection between the bottom end of the shaking rod (63) and the receiving groove (62), a sliding groove (66) is provided in the top end of the shaking rod (63), the sliding groove (66) is slidably connected to a limiting plate (69), and the two ends of the sliding groove (66) are connected to each other. A limiting groove (67) is symmetrically provided on the side, a limiting block (68) is slidably connected in the limiting groove (67), the limiting block (68) is fixedly connected to the limiting plate (69), the inner wall of the bottom end of the slide groove (66) is fixedly connected to one end of a spring (69) b, the other end of the spring (69) b is fixedly connected to the bottom end of the limiting plate (69), the top end of the limiting plate (69) is fixedly connected to one end of a pull rope (69) a, the other end of the pull rope (69) a is fixedly connected to a vibration ball (64), and the vibration ball (64) is initially located at the top end of the shaking rod (63) located in the storage groove (62).

7. The bleed valve silencer for oil drilling according to claim 6, characterized in that: A second pulley (55) is fixedly connected to the top end of the rotating rod (61), and the first pulley (54) and the second pulley (55) are connected via a belt transmission.

8. The bleed valve silencer for oil drilling according to claim 7, characterized in that: When the telescopic cylinder (41) slides to the limit in a direction away from the fan blade (44), the fan blade (44) fits against the mounting rod (31).

9. The bleed valve silencer for oil drilling according to claim 8, characterized in that: When the telescopic cylinder (41) slides to the limit in the direction of the fan blades (44), a plurality of the fan blades (44) are fully opened, and when the plurality of the fan blades (44) are fully opened, they are located at the central axis of the air discharge pipe (1), and at this time, the first bevel gear (51) is meshed with the second bevel gear (52); The distance that the sliding sleeve (42) slides on the mounting rod (31) corresponds to the distance that the fan blade (44) slides from closing to opening, and matches the length of the mounting rod (31) located inside the air release pipe (1).

10. The bleed valve silencer for oil drilling according to claim 7, characterized in that: The centrifugal force generated by the vibration ball (64) when the rotating rod (61) rotates is sufficient to overcome the torsion force of the torsion spring (65) that causes the shaking rod (63) to be in a vertical state; The elastic force of the spring (69) b is sufficient to restrict the vibration ball (64) to be located on the top end of the shaking rod (63) located in the receiving groove (62) when the rotating rod (61) is not rotating; When the height of the limiting groove (67) is in a horizontal position with the shaking rod (63), the distance that the vibration ball (64) slides to the inner wall of the inner cylinder (22) matches.

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