Throttling kill manifold with sand prevention function

Abstract

The invention discloses a throttling well killing manifold with a sand prevention function, relates to the technical field of throttling well killing manifolds, and provides the technical scheme that the throttling well killing manifold with the sand prevention function comprises a throttling well killing manifold body, a sand prevention assembly, a sand settling assembly and a vibration assembly, and the sand prevention assembly is arranged in the throttling well killing manifold body; the sand settling assembly is arranged at the bottom end of the sand prevention assembly, the input end of the sand settling assembly is communicated with the throttling kill manifold, the vibration assembly is arranged at the top end of the throttling kill manifold, the output end of the vibration assembly is connected with the sand prevention assembly, and the storage tank is arranged at the output end of the sand settling assembly.

Description

Technical Field

[0001] The invention relates to the technical field of throttling and well-killing manifolds, in particular to a throttling and well-killing manifold with a sand prevention function. Background Art

[0002] Once the formation fluid loses control during the oil and gas drilling process, a kick or blowout may occur. A blowout will complicate the downhole situation, making it impossible to carry out normal drilling operations, and even damage drilling equipment and oil and gas resources, endangering the safety of drilling personnel and oil and gas wells. The choke and well-killing manifold is a special manifold equipped with an adjustable flow valve. During the well-killing operation, the throttle valve is adjusted to apply back pressure to the well to restrict the fluid in the well, thereby achieving well kick and oil and gas well pressure control.

[0003] The existing throttling and well-killing manifold contains impurities such as mud, water, etc. in the internal fluid during use. When the fluid drives the mud, water, etc. impurities to move, it will drive the mud, water, etc. impurities to impact the inside of the throttling and well-killing manifold. Therefore, a filter plate is required to filter the mud, water and other impurities. However, after a period of use, the filter plate will accumulate mud, water and other impurities, causing the manifold to be blocked. The impurities need to be cleaned, but the manifold needs to be closed during cleaning, affecting work efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a throttling and well-killing manifold with a sand-proof function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: The present invention provides a technical solution of a throttling well-killing manifold with a sand prevention function, comprising a throttling well-killing manifold body, a sand prevention component, a sand settling component and a vibration component. The throttling well-killing manifold body is provided with a sand prevention component, the bottom end of the sand prevention component is provided with a sand settling component, the input end of the sand settling component is connected to the throttling well-killing manifold body, the top end of the throttling well-killing manifold body is provided with a vibration component, the output end of the vibration component is connected to the sand prevention component, and the output end of the sand settling component is provided with a storage tank.

[0006] The sand prevention component is used to filter the silt in the manifold, and the sand settling component is used to collect and store the silt filtered by the sand prevention component. Since the sand prevention component will filter the silt in the manifold, the silt will accumulate in the manifold, and thus the sand settling component is used to collect and store the silt. However, since the sand settling component has a cavity inside, the continuous flow beam will damage the sand settling component, and the baffle plate prevents the flow beam from passing through the inside of the sand settling component. During use, a thrust is formed due to the continuous flow beam, and the thrust will squeeze a small part of the silt onto the filter plate, which will cause the filter plate to be blocked after long-term use, affecting normal use. The vibration component will exert force on the filter component to make the filter plate vibrate as a whole, and the silt on the filter plate will be shaken off, thereby reducing the probability of filter plate blockage and increasing the service life of the overall device. The storage tank is used to collect silt to prevent the throttling and well-killing manifold from being blocked by a large amount of silt accumulated after filtration.

[0007] Furthermore, the sand prevention component includes a filter plate, which is movably connected to the throttling and well-killing manifold body. A through hole is provided at the top of the throttling and well-killing manifold body, and a groove A is provided at the bottom end of the inner wall of the throttling and well-killing manifold body. The top of the filter plate is slidably connected to the through hole, and the bottom end of the filter plate is slidably connected to the groove A. A spring is provided in the groove A, and the bottom end of the spring is fixedly connected to the inner wall of the throttling and well-killing manifold body, and the top end of the spring is fixedly connected to the bottom frame of the filter plate. A vibration component is provided at the top of the filter plate.

[0008] The top end of the filter plate is slidably connected to the through hole, and the bottom end of the filter plate is slidably connected to the groove A to form a closed space. When the filter plate shakes, the top frame and the bottom frame will not separate from the through hole and the groove A to prevent leakage. The spring is used to provide elastic potential energy so that the filter plate can shake and reset after the shaking stops.

[0009] Furthermore, the vibration assembly includes a protective shell and a connecting block. A protective shell is provided at the top of the through hole, and the protective shell is fixedly connected to the throttling and well-killing manifold body. A connecting block is provided on one side of the protective shell, and the connecting block is fixedly connected to the throttling and well-killing manifold body. A hollow cavity is opened in the connecting block, and a stator winding is provided in the hollow cavity. A rotating rod A is provided in the hollow cavity, a rotor is provided at one end of the rotating rod A, and a cam is provided at the other end of the rotating rod A. The connecting block cooperates with the protective shell.

[0010] The protective shell is used to prevent the manifold from leaking. The connecting block is located on one side of the top of the filter plate. When the stator winding is energized, a magnetic field is generated to control the rotation of the rotor. The rotor drives the rotating rod A to rotate, and the rotating rod A drives the cam to rotate. The cam is located on the top of the filter plate. When the cam rotates, one end of the cam will squeeze the filter plate, and then when the cam rotates, it will intermittently squeeze the filter plate, causing the filter plate to shake.

[0011] Furthermore, the sand settling assembly includes a sand settling tank, which is located on one side of the bottom end of the filter plate. The sand settling tank is connected to the throttling well-pressing manifold body. A baffle is provided at the bottom end of the inside of the sand settling tank. A rotating rod B is provided at one end of the baffle. The rod body of the rotating rod B is fixedly connected to the baffle. Both ends of the rotating rod B are rotatably connected to the inner wall of the sand settling tank. A rotating motor is provided on one side of the sand settling tank. The rotating motor is fixedly connected to the sand settling tank, and the output end of the rotating motor is fixedly connected to the rotating rod B.

[0012] The silt filtered by the filter plate will fall into the sedimentation tank. Since both ends of the rotating rod B are connected to the rotation, the baffle plate rotates based on the rotating rod B. The rotating motor is used as a power source to control the rotation of the rotating rod B. The rotating rod B drives the baffle plate to rotate. The baffle plate plays a role in storing silt and preventing the flow from passing through the inside of the sedimentation component. After the baffle plate rotates, it is 30°-45°, and the flow in the throttling and well-killing manifold will pass through the sedimentation tank, driving the silt on the baffle plate to move to the storage tank.

[0013] Furthermore, a transverse plate is provided on the upper surface of the spoiler, the transverse plate is fixedly connected to the spoiler, a groove B is opened on the transverse plate, a thin sheet is provided on the groove B, both ends of the thin sheet are fixedly connected to the inner wall of the transverse plate, and two capacitor blocks are provided at the bottom end of the thin sheet, and the capacitor blocks are located at both ends of the thin sheet.

[0014] When the thin sheet is not subjected to external pressure, the resistance value between its two capacitor blocks is constant. After the sediment accumulates in the sedimentation tank, the thin sheet will be subjected to external sediment pressure, which will cause the thin sheet to bend. The resistance value between the two capacitor blocks will change. The thin sheet bends, the distance between the two capacitor blocks will be closer, and the resistance value will become smaller. Therefore, the sediment stored in the sedimentation tank can be known based on the changed resistance value.

[0015] Furthermore, the capacitor block is electrically connected to the stator winding, and the capacitor block is electrically connected to the rotating motor.

[0016] According to the resistance value, when the silt stored in the sedimentation tank reaches the storage capacity of the sedimentation tank, the stator winding will be energized, and a magnetic field will be generated to control the rotation of the rotor. The rotor drives the rotating rod A to rotate, and the rotating rod A drives the cam to rotate. The cam is located at the top of the filter plate, so that when the cam rotates, one end of the cam will squeeze the filter plate, and then when the cam rotates, it will produce intermittent squeezing on the filter plate, causing the filter plate to shake, so that the silt on the filter plate shakes and falls into the sedimentation tank, and then the motor is turned to control the rotating rod B to rotate, and the rotating rod B drives the baffle to rotate. After the baffle rotates, it is 30°-45°, and the flow beam in the throttling well-killing manifold will pass through the sedimentation tank, driving the silt on the baffle to move to the storage tank, and the silt on the baffle falls into the storage tank, the pressure on the thin sheet will be reduced, and the thin sheet rebounds to its original position. The resistance value between the two capacitor blocks gradually returns to the original value, and then the stator winding stops being energized, and the rotating motor controls the rotating rod B to rotate to reset the baffle.

[0017] Furthermore, a storage tank is provided at the bottom of the sedimentation tank, and the storage tank is threadedly connected to the sedimentation tank, and the storage tank is communicated with the sedimentation tank.

[0018] The storage tank is used to store silt, reduce the storage pressure of the sedimentation tank, and facilitate the replacement and collection of staff.

[0019] Furthermore, the storage tank is a transparent tank, and a scale is provided on the outer surface of the storage tank.

[0020] The staff can find out the storage capacity by observing the scale on the transparent tank.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. When the present invention is in use, the stator winding is energized to generate a magnetic field to control the rotation of the rotor, and the rotor drives the rotating rod A to rotate, and the rotating rod A drives the cam to rotate. The cam is located at the top of the filter plate, so that when the cam rotates, one end of the cam will squeeze the filter plate, and then when the cam rotates, it will produce intermittent squeezing on the filter plate, causing the filter plate to shake, and the mud and sand on the filter plate will shake and fall into the sedimentation tank, so as to clean the impurities remaining on the filter plate.

[0023] 2. When the present invention is in use, the rotating motor controls the rotating rod B to rotate, and the rotating rod B drives the baffle to rotate. After the baffle rotates, it is 30°-45°, and the flow beam in the throttling and well-killing manifold will pass through the sedimentation tank, driving the sediment on the baffle to move into the storage tank. The sediment on the baffle falls into the storage tank, and the pressure on the thin sheet will be reduced, and the thin sheet rebounds to its original position. The resistance value between the two capacitor blocks gradually returns to the original value, and then the stator winding stops being energized, and the rotating motor controls the rotating rod B to rotate, so that the baffle is reset. There is no need to close the valve during operation, so as to collect impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of a part of the vibration component of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall internal structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure inside the connecting block of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of a part of the interior of the throttling and well-killing manifold body of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure inside the transverse plate of the present invention.

[0030] In the figure: 1. throttling and well-killing manifold body; 11. through hole; 12. groove A; 2. sand prevention component; 21. filter plate; 22. spring; 3. sand settling component; 31. sand settling tank; 32. baffle; 33. rotating rod B; 34. rotating motor; 35. cross plate; 351. groove B; 36. sheet; 37. capacitor block; 4. vibration component; 41. protective shell; 42. connecting block; 421. hollow cavity; 43. stator winding; 44. rotating rod A; 45. rotor; 46. cam; 5. storage tank. DETAILED DESCRIPTION

[0031] 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.

[0032] Example:

[0033] like Figure 1 to Figure 6 As shown, the present invention provides a technical solution of a throttling and well-killing manifold with a sand prevention function, comprising a throttling and well-killing manifold body 1, a sand prevention component 2, a sand settling component 3 and a vibration component 4. The throttling and well-killing manifold body 1 is provided with a sand prevention component 2, the bottom end of the sand prevention component 2 is provided with a sand settling component 3, the input end of the sand settling component 3 is connected to the throttling and well-killing manifold body, the top end of the throttling and well-killing manifold body is provided with a vibration component 4, the output end of the vibration component 4 is connected to the sand prevention component 2, and the output end of the sand settling component 3 is provided with a storage tank 5;

[0034] Specifically, the sand prevention component 2 is used to filter the silt in the manifold, and the sand settling component 3 is used to collect and store the silt filtered by the sand prevention component 2. Since the sand prevention component 2 will filter the silt in the manifold, the silt will accumulate in the manifold, and thus the sand settling component 3 is used to collect and store the silt, but since the sand settling component 3 has a cavity, the continuous flow beam will damage the sand settling component 3, and the baffle 32 prevents the flow beam from passing through the inside of the sand settling component 3. During use, a thrust is formed due to the continuous flow beam, and the thrust will squeeze a small part of the silt onto the filter plate 21, which will cause the filter plate 21 to be blocked after long-term use, affecting normal use. The vibration component 4 will apply force to the filter component to make the filter plate 21 vibrate as a whole, and the silt on the filter plate 21 will be shaken off, thereby reducing the probability of clogging of the filter plate 21 and increasing the service life of the overall device. The storage tank 5 is used to collect silt to prevent the large amount of silt accumulated after filtration from causing clogging of the throttling and well-killing manifold.

[0035] like Figure 3As shown, the sand prevention component 2 includes a filter plate 21, which is movably connected to the throttling and well-killing manifold body 1. A through hole 11 is provided at the top of the throttling and well-killing manifold body 1, and a groove A12 is provided at the bottom of the inner wall of the throttling and well-killing manifold body 1. The top of the filter plate 21 is slidably connected to the through hole 11, and the bottom of the filter plate 21 is slidably connected to the groove A12. A spring 22 is provided in the groove A12, and the bottom end of the spring 22 is fixedly connected to the inner wall of the throttling and well-killing manifold body 1, and the top of the spring 22 is fixedly connected to the bottom frame of the filter plate 21. A vibration component 4 is provided at the top of the filter plate 21;

[0036] Specifically, the top end of the filter plate 21 is slidably connected to the through hole 11, and the bottom end of the filter plate 21 is slidably connected to the groove A12 to form a closed space. When the filter plate 21 shakes, its top frame and bottom frame will not separate from the through hole 11 and the groove A12 to prevent leakage. The spring 22 is used to provide elastic potential energy so that the filter plate 21 can shake and reset after the shaking stops.

[0037] like Figure 2 , Figure 3 As shown, the vibration assembly 4 includes a protective shell 41 and a connecting block 42, a protective shell 41 is provided at the top of the through hole 11, the protective shell 41 is fixedly connected to the throttling and well-killing manifold body 1, a connecting block 42 is provided on one side of the protective shell 41, the connecting block 42 is fixedly connected to the throttling and well-killing manifold body 1, a hollow cavity 421 is opened in the connecting block 42, a stator winding 43 is provided in the hollow cavity 421, a rotating rod A44 is provided in the hollow cavity 421, a rotor 45 is provided at one end of the rotating rod A44, a cam 46 is provided at the other end of the rotating rod A44, and the connecting block 42 cooperates with the protective shell 41;

[0038] Specifically, the protective shell 41 is used to prevent the manifold from leaking. The connecting block 42 is located on one side of the top of the filter plate 21. When the stator winding 43 is energized, a magnetic field is generated to control the rotation of the rotor 45. The rotor 45 drives the rotating rod A44 to rotate. The rotating rod A44 drives the cam 46 to rotate. The cam 46 is located at the top of the filter plate 21. When the cam 46 rotates, one end of the cam 46 will squeeze the filter plate 21. Then, when the cam 46 rotates, it will intermittently squeeze the filter plate 21, causing the filter plate 21 to shake.

[0039] like Figure 3 , Figure 5As shown, the sand settling assembly 3 includes a sand settling tank 31, which is located at one side of the bottom end of the filter plate 21, and the sand settling tank 31 is connected to the throttling well-killing manifold body 1. A baffle plate 32 is provided at the bottom end of the inner part of the sand settling tank 31, and a rotating rod B33 is provided at one end of the baffle plate 32. The rod body of the rotating rod B33 is fixedly connected to the baffle plate 32, and both ends of the rotating rod B33 are rotatably connected to the inner wall of the sand settling tank 31. A rotating motor 34 is provided on one side of the sand settling tank 31, and the rotating motor 34 is fixedly connected to the sand settling tank 31. The output end of the rotating motor 34 is fixedly connected to the rotating rod B33;

[0040] Specifically, the silt filtered by the filter plate 21 will fall into the sedimentation tank 31. Since both ends of the rotating rod B33 are connected to the rotation, the baffle plate 32 rotates based on the rotating rod B33. The rotating motor 34 serves as a power source to control the rotation of the rotating rod B33. The rotating rod B33 drives the baffle plate 32 to rotate. The baffle plate 32 stores silt and prevents the flow from passing through the inside of the sedimentation component 3. After the baffle plate 32 rotates, it is 30°-45°. The flow in the throttling and well-pressing manifold will pass through the sedimentation tank 31, driving the silt on the baffle plate 32 to move to the storage tank 5.

[0041] like Figure 5 , Figure 6 As shown, a transverse plate 35 is provided on the upper surface of the spoiler 32, and the transverse plate 35 is fixedly connected to the spoiler 32. A groove B351 is provided on the transverse plate 35, and a thin sheet 36 is provided on the groove B351. Both ends of the thin sheet 36 are fixedly connected to the inner wall of the transverse plate 35. Two capacitor blocks 37 are provided at the bottom end of the thin sheet 36, and the capacitor blocks 37 are located at both ends of the thin sheet 36;

[0042] Specifically, when the thin sheet 36 is not subjected to external pressure, the resistance value between its two capacitor blocks 37 is a constant value. After the sediment accumulates in the sedimentation tank 31, the thin sheet 36 will be subjected to external sediment pressure, thereby causing the thin sheet 36 to bend, and the resistance value between the two capacitor blocks 37 will change. The thin sheet 36 bends, the distance between the two capacitor blocks 37 will be closer, and the resistance value will become smaller, so that the sediment stored in the sedimentation tank 31 can be known based on the changed resistance value.

[0043] like Figure 6 As shown, the capacitor block 37 is electrically connected to the stator winding 43, and the capacitor block 37 is electrically connected to the rotating motor 34;

[0044] Specifically, according to the resistance value, when the silt stored in the sedimentation tank 31 reaches the storage capacity of the sedimentation tank 31, the stator winding 43 will be energized, and a magnetic field will be generated to control the rotation of the rotor 45, and the rotor 45 drives the rotating rod A44 to rotate, and the rotating rod A44 drives the cam 46 to rotate. The cam 46 is located at the top of the filter plate 21, so that when the cam 46 rotates, one end of the cam 46 will squeeze the filter plate 21, and then when the cam 46 rotates, it will intermittently squeeze the filter plate 21, so that the filter plate 21 will shake, and the silt on the filter plate 21 will shake and fall into the sedimentation tank 3. 1, and then the rotating motor 34 controls the rotating rod B33 to rotate, and the rotating rod B33 drives the baffle 32 to rotate. After the baffle 32 rotates, it is 30°-45°, and the flow beam in the throttling and well-killing manifold will pass through the sedimentation tank 31, driving the silt on the baffle 32 to move to the storage tank 5. The silt on the baffle 32 falls into the storage tank 5, and the pressure on the thin sheet 36 is reduced, and the thin sheet 36 rebounds to its original position. The resistance value between the two capacitor blocks 37 gradually returns to the original value, and then the stator winding 43 stops being energized, and the rotating motor 34 controls the rotating rod B33 to rotate, so that the baffle 32 is reset.

[0045] like Figure 3 As shown, a storage tank 5 is provided at the bottom of the sedimentation tank 31, and the storage tank 5 is threadedly connected to the sedimentation tank 31, and the storage tank 5 is communicated with the sedimentation tank 31;

[0046] Specifically, the storage tank 5 is used to store silt, reduce the storage pressure of the silt settling tank 31, and facilitate replacement and collection by staff.

[0047] like Figure 2 As shown, the storage tank 5 is a transparent tank, and the outer surface of the storage tank 5 is provided with scales;

[0048] Specifically, the staff can find out the storage capacity by observing the scale on the transparent tank.

[0049] Working principle: In use, the filter plate 21 filters the silt in the manifold, and the silt filtered by the filter plate 21 will fall into the sedimentation tank 31, and then the silt in the sedimentation tank 31 will squeeze the thin sheet 36. According to the resistance value, when the silt stored in the sedimentation tank 31 reaches the storage capacity of the sedimentation tank 31, the stator winding 43 will be energized, and a magnetic field will be generated to control the rotation of the rotor 45, and the rotor 45 drives the rotating rod A44 to rotate, and the rotating rod A44 drives the cam 46 to rotate. The cam 46 is located at the top of the filter plate 21, so that when the cam 46 rotates, one end of the cam 46 will squeeze the filter plate 21, and then when the cam 46 rotates, it will produce intermittent squeezing on the filter plate 21. The filter plate 21 is shaken, and the silt on the filter plate 21 is shaken and falls into the sedimentation tank 31. Then the rotating motor 34 controls the rotating rod B33 to rotate, and the rotating rod B33 drives the baffle plate 32 to rotate. After the baffle plate 32 rotates, it is 30°-45°, and the flow beam in the throttling and well-killing manifold will pass through the sedimentation tank 31, driving the silt on the baffle plate 32 to move to the storage tank 5. The silt on the baffle plate 32 falls into the storage tank 5, and the pressure on the thin sheet 36 is reduced, and the thin sheet 36 rebounds to its original position. The resistance value between the two capacitor blocks 37 gradually returns to the original value, and then the stator winding 43 stops being energized, and the rotating motor 34 controls the rotating rod B33 to rotate, so that the baffle plate 32 is reset.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A throttling and well-killing manifold with sand prevention function, characterized in that: The invention comprises a throttling and well-killing manifold body (1), a sand prevention component (2), a sand settling component (3) and a vibration component (4); the throttling and well-killing manifold body (1) is provided with a sand prevention component (2); the bottom end of the sand prevention component (2) is provided with a sand settling component (3); the input end of the sand settling component (3) is connected to the throttling and well-killing manifold body (1); the top end of the throttling and well-killing manifold body (1) is provided with a vibration component (4); the output end of the vibration component (4) is connected to the sand prevention component (2); and the output end of the sand settling component (3) is provided with a storage tank (5).

2. The throttling and well-killing manifold with sand prevention function according to claim 1, characterized in that: The sand prevention component (2) comprises a filter plate (21), the filter plate (21) is movably connected to the throttling and well-killing manifold body (1), the top of the throttling and well-killing manifold body (1) is provided with a through hole (11), the bottom of the inner wall of the throttling and well-killing manifold body (1) is provided with a groove A (12), the top of the filter plate (21) is slidably connected to the through hole (11), the bottom of the filter plate (21) is slidably connected to the groove A (12), a spring (22) is arranged in the groove A (12), the bottom of the spring (22) is fixedly connected to the inner wall of the throttling and well-killing manifold body (1), the top of the spring (22) is fixedly connected to the bottom frame of the filter plate (21), and the top of the filter plate (21) is provided with a vibration component (4).

3. The throttling and well-killing manifold with sand prevention function according to claim 2, characterized in that: The vibration component (4) comprises a protective shell (41) and a connecting block (42); the top of the through hole (11) is provided with a protective shell (41); the protective shell (41) is fixedly connected to the throttling and well-killing manifold body (1); a connecting block (42) is provided on one side of the protective shell (41); the connecting block (42) is fixedly connected to the throttling and well-killing manifold body (1); a hollow cavity (421) is provided in the connecting block (42); a stator winding (43) is provided in the hollow cavity (421); a rotating rod A (44) is provided in the hollow cavity (421); a rotor (45) is provided at one end of the rotating rod A (44); a cam (46) is provided at the other end of the rotating rod A (44); and the connecting block (42) cooperates with the protective shell (41).

4. The throttling and well-killing manifold with sand prevention function according to claim 3 is characterized in that: The desilting assembly (3) comprises a desilting tank (31), the desilting tank (31) being located at one side of the bottom end of the filter plate (21), the desilting tank (31) being connected to the throttling well-killing manifold body (1), a baffle plate (32) being provided at the bottom end of the desilting tank (31), a rotating rod B (33) being provided at one end of the baffle plate (32), the rod body of the rotating rod B (33) being fixedly connected to the baffle plate (32), the two ends of the rotating rod B (33) being rotatably connected to the inner wall of the desilting tank (31), a rotating motor (34) being provided at one side of the desilting tank (31), the rotating motor (34) being fixedly connected to the desilting tank (31), and the output end of the rotating motor (34) being fixedly connected to the rotating rod B (33).

5. The throttling and well-killing manifold with sand prevention function according to claim 4, characterized in that: A transverse plate (35) is provided on the upper surface of the spoiler (32), the transverse plate (35) being fixedly connected to the spoiler (32), a groove B (351) being provided on the transverse plate (35), a thin sheet (36) being provided on the groove B (351), two ends of the thin sheet (36) being fixedly connected to the inner wall of the transverse plate (35), two capacitor blocks (37) being provided at the bottom end of the thin sheet (36), the capacitor blocks (37) being located at the two ends of the thin sheet (36).

6. The throttling and well-killing manifold with sand prevention function according to claim 5, characterized in that: The capacitor block (37) is electrically connected to the stator winding (43), and the capacitor block (37) is electrically connected to the rotating motor (34).

7. The throttling and well-killing manifold with sand prevention function according to claim 6, characterized in that: A storage tank (5) is provided at the bottom of the desilting tank (31), and the storage tank (5) is threadedly connected to the desilting tank (31), and the storage tank (5) is communicated with the desilting tank (31).

8. The throttling and well-killing manifold with sand prevention function according to claim 7, characterized in that: The storage tank (5) is a transparent tank, and the outer surface of the storage tank (5) is provided with scales.

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