Fishing-free throttler

Abstract

The invention relates to the technical field of throttlers, and provides a salvage-free throttler which comprises an oil sleeve, a central pipe is arranged in the oil sleeve, the bottom of the central pipe is fixedly sleeved with a connecting pipe, and a throttling assembly is arranged at the bottom of the connecting pipe; a pressing pipe is arranged on the outer side of the center pipe, and an adjusting assembly is arranged on the outer side of the pressing pipe. The adjusting ring can be driven to press downwards by pressing the pressing pipe, the pressure spring is compressed after the adjusting ring moves, so that the pressure needing to push away the first valve is increased, the throttler is adjusted, after the oil layer pressure is changed, the steps of fishing up the throttler, adjusting the throttler and putting the throttler into use again are simplified, and the cost is reduced. The device can be automatically adjusted, the working efficiency is improved in the using process, protection on an oil layer is also improved, and the mining effect is improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of throttles, and specifically, to a non-fishing type throttle. Background Art

[0002] A throttle is a component that restricts the flow of fluid in a hydraulic system and generates a pressure drop. Various different throttles are used in different aspects of industrial construction, playing their respective roles in our industrial construction. To adapt to the development of major oilfields, according to the well conditions of different blocks in each oilfield's geographical environment, downhole throttling technology has been researched and developed as a new technology, resulting in a wide variety of downhole throttles. Downhole throttles can be mainly roughly divided into two types: movable type and fixed type. The movable type downhole throttle can be lowered to any well section position as needed, the setting position is adjustable, and the placement and fishing operations are convenient and reliable, especially suitable for old wells that require throttling. The fixed type downhole throttle's placement position is determined by the position of the downhole working barrel. It can withstand a higher pressure difference, has a good sealing effect, and the fishing operation is also simple and reliable, suitable for use in newly put into production wells.

[0003] In the prior art, a throttle is usually set with a rated pressure value and then placed in a multi-layer reservoir, using the throttle to perform layered water injection in the reservoir. The properties and conditions of the oil layer may change during the processes of exploitation and water injection. For example, the permeability, pressure, water cut, etc. of the oil layer may change as the exploitation progresses. These changes may affect the effect and requirements of layered water injection, and the water injection process needs to be adjusted. At this time, it is necessary to fish out the throttle, adjust the pressure of the throttle and then put it in. The process is overly cumbersome during the adjustment, affecting work efficiency. Secondly, during the use of the throttle, since the flow rate of the water flowing through the throttle is adjusted by the water pressure, its response process is slow. And when the properties and conditions of the oil layer change and it is necessary to quickly adjust the water flow rate, the slow response of the throttle may result in the pressure of the oil layer not being able to be controlled in a timely and effective manner, thus affecting the oil layer exploitation effect. Summary of the Invention

[0004] To overcome the above defects, the present invention provides a non-fishing type throttle, which has the advantage of quick adjustment and solves the technical problem in the prior art that the pressure of the throttle cannot be quickly adjusted.

[0005] According to one aspect, at least one embodiment of the present invention provides a non-fishing type throttle, including: an oil casing, a central tube is arranged inside the oil casing, a connecting tube is fixedly sleeved at the bottom of the central tube, and a throttling component is arranged at the bottom of the connecting tube; A pressing tube is arranged outside the central tube, and an adjusting component is arranged outside the pressing tube; The bottom of the pressing tube is fixedly connected with an adjusting ring, a protection plate is arranged at the bottom of the adjusting ring, and a flow blocking component is arranged at the bottom of the adjusting ring; A joint is provided at the bottom of the adjusting ring, and a plurality of water outlet holes are formed on the outer side of the oil sleeve. A sleeve is fixedly sleeved at the bottom of the joint. As described above, when working, by pressing the pressing pipe, the throttling component, the flow blocking component and the adjusting component can move simultaneously, so as to avoid the delay of the throttle during the adjustment of the water flow pressure and ensure the balance of the oil layer.

[0006] Preferably, the throttling component includes a first valve. The first valve is movably sleeved on the outer side of the connecting pipe. A water outlet column is provided at the bottom of the first valve. The first valve abuts against the water outlet column. The connecting pipe and the water outlet column are communicated with each other. The two central pipes are communicated with each other through the connecting pipe and the water outlet column. The water outlet column is threadedly connected to the joint. A plurality of water outlet grooves are formed around the water outlet column and the connecting pipe. As described above, when working, the first valve can be driven out by water pressure to control the water injection.

[0007] Preferably, the flow blocking component further includes a compression spring. One end of the compression spring is fixedly connected to the first valve, and the other end of the compression spring is fixedly connected to the adjusting ring. The compression spring is movably sleeved on the outer side of the connecting pipe. As described above, when working, the flow blocking and throttling components can be connected through the compression spring so that they can be adjusted synchronously when adjusting the water flow rate.

[0008] Preferably, the adjusting component includes an upper guide ring. The upper guide ring is fixedly connected to the oil sleeve. The heights of a plurality of arc-shaped parts at the bottom of the upper guide ring are different. One ends of a plurality of connecting columns are fixedly connected to the bottom of the upper guide ring. The other ends of the plurality of connecting columns are fixedly connected to a lower guide ring. The lower guide ring is fixedly connected to the oil sleeve. A moving column is fixedly connected to one side of the pressing pipe. The moving column abuts against the lower end of the upper guide ring. As described above, when working, the rotation of the pressing pipe can be realized through the cooperation of the moving column with the upper guide ring and the lower guide ring. Since the heights of a plurality of arc-shaped grooves at the bottom of the upper guide ring are different, the pressing height of the pressing pipe can be adjusted by the moving column being at the top of that arc, so as to adjust the water flow output.

[0009] Preferably, the flow blocking component includes a plurality of pushing blocks. The plurality of pushing blocks are all fixedly connected to the outer side of the pressing pipe. A fixed ring is slidably connected to one side of the adjusting ring. The fixed ring is fixedly connected to the protection plate. A moving ring is rotatably connected to one side of the fixed ring. As described above, when working, the lifting and lowering of the pushing blocks can drive a series of parts such as the fixed block to move, so as to control the water injection volume and avoid the need for fishing and adjustment.

[0010] Preferably, the flow blocking assembly includes multiple groups of fixing blocks, and multiple groups of the fixing blocks are fixedly connected to the top of the moving ring. A plurality of flow blocking plates are fixedly connected to the bottom of the moving ring. A plurality of groups of L-shaped connecting plates are fixedly connected to the bottom of the fixed ring, and the plurality of groups of L-shaped connecting plates are fixedly connected to the oil sleeve. The above structure can fix the fixed ring and the oil sleeve through the L-shaped connecting plates during operation, so as to limit the water flow and enable it to flow out through the water outlet holes for layered water injection.

[0011] Preferably, the upper guide ring and the lower guide ring have the same arc shape, and the arc peaks of the arcs of the upper guide ring and the lower guide ring are arranged staggeredly. The above structure can enable the moving column to rotate following the arc during movement through the staggered arc peak settings of the upper guide ring and the lower guide ring.

[0012] Preferably, the adjusting ring is movably sleeved inside the protection plate, and the protection plate is fixedly connected to the fixed ring. The above structure can protect the internal compression spring through the protection plate during operation, avoiding erosion by water flow scouring.

[0013] Preferably, when the flow blocking plate rotates to the limit position, the flow blocking plate blocks two-thirds of the water outlet hole, which is used to instantly reduce the output volume of the water flow. The above structure can block the water outlet hole through the rotation of the flow blocking plate during operation, and the water flow rate can be greatly attenuated instantaneously.

[0014] Preferably, multiple groups of the L-shaped connecting plates are located in the middle of the distance between two groups of the flow blocking plates. The above structure can prevent the flow blocking plate from colliding with the L-shaped connecting plate and generating a shearing behavior during rotation, thus affecting the normal function during operation through the L-shaped connecting plates being located in the middle of the distance between two groups of the flow blocking plates.

[0015] The beneficial effects of the embodiments of the present invention are as follows: 1. When the state inside the oil layer changes and the pressure of the throttle needs to be changed, pressing the pressing tube at this time will drive the adjusting ring to press downwards. After the adjusting ring moves, the compression spring is compressed, increasing the pressure required to push open the first valve, thereby adjusting the throttle. After the oil layer pressure changes, the steps of fishing out, adjusting, and reinserting the throttle are simplified, enabling automatic adjustment, improving the work efficiency during operation, and also enhancing the protection of the oil layer, thus improving the exploitation effect.

[0016] 2. In the present invention, the pressing tube drives the pushing block to press downwards. During the pressing process, the pushing block cooperates with the fixed block. Since the moving column rotates along the arcs of the lower guiding ring and the upper guiding ring, the pressing tube will drive the pushing block to rotate. When the pushing block rotates, it can drive the moving ring and the flow blocking plate to rotate. After the flow blocking plate rotates, it will block the water outlet hole. When the state of the oil layer changes and it is necessary to reduce the output of stratified water injection into the oil layer, the water flow output can be instantaneously controlled, realizing instantaneous adjustment of the water injection output. During the working process, it can prevent the oil layer from being damaged due to excessive water injection, and at the same time better maintain the pressure balance of the oil layer, preventing the oil layer from generating cracks or micro-cracks due to excessive pressure, which may damage the original structure of the oil layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present invention and these drawings.

[0018] Figure 1 Internal sectional view of the oil casing of the present invention; Figure 2 Internal sectional view of the joint of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of the structure at A in Figure 4 Schematic structural diagram of the throttling component of the present invention; Figure 5 Schematic structural diagram of the water outlet hole of the present invention; Figure 6 Schematic structural diagram of the upper guiding ring of the present invention; Figure 7 Schematic structural diagram of the moving ring of the present invention; Figure 8 Schematic structural diagram of the L-shaped connecting plate of the present invention.

[0019] Wherein: 1. Oil casing; 2. Central tube; 3. Connecting tube; 4. First valve; 5. Water outlet column; 6. Water outlet groove; 7. Joint; 8. Pressing tube; 9. Adjusting ring; 10. Protection plate; 11. Compression spring; 12. Upper guiding ring; 13. Connecting column; 14. Lower guiding ring; 15. Moving column; 16. Pushing block; 17. Fixed ring; 18. Moving ring; 19. Fixed block; 20. Flow blocking plate; 21. Water outlet hole; 22. Casing; 23. L-shaped connecting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention.

[0021] To make the drawings concise, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, for components with the same structure or function in some figures, only one of them is schematically shown, or only one of them is labeled. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0022] In this article, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0024] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0025] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0026] Such as Figures 1 to 8As shown in the figure, it shows a non-recovery type throttle in an embodiment of the present invention, including an oil casing 1. A central pipe 2 is arranged inside the oil casing 1. A connecting pipe 3 is fixedly sleeved at the bottom of the central pipe 2. A throttle assembly is arranged at the bottom of the connecting pipe 3; A pressing pipe 8 is arranged outside the central pipe 2. An adjusting assembly is arranged outside the pressing pipe 8; The bottom of the pressing pipe 8 is fixedly connected with an adjusting ring 9. A protection plate 10 is arranged at the bottom of the adjusting ring 9. A flow blocking assembly is arranged at the bottom of the adjusting ring 9; A joint 7 is arranged at the bottom of the adjusting ring 9. Multiple water outlet holes 21 are opened on the outside of the oil casing 1. A sleeve 22 is fixedly sleeved at the bottom of the joint 7. By pressing the pressing pipe 8, the throttle assembly, the flow blocking assembly and the adjusting assembly move simultaneously, so as to avoid the delay of the throttle when adjusting the water flow pressure and ensure the balance of the oil layer.

[0027] Among them, the throttle assembly includes a first valve 4. The first valve 4 is movably sleeved outside the connecting pipe 3. A water outlet column 5 is arranged at the bottom of the first valve 4. The first valve 4 and the water outlet column 5 are in mutual abutment. The connecting pipe 3 and the water outlet column 5 are communicated with each other. The two central pipes 2 are communicated with each other through the connecting pipe 3 and the water outlet column 5. The water outlet column 5 is threadedly connected with the joint 7. Multiple water outlet grooves 6 are opened around the water outlet column 5 and the connecting pipe 3. The throttle assembly further includes a compression spring 11. One end of the compression spring 11 is fixedly connected with the first valve 4. The other end of the compression spring 11 is fixedly connected with the adjusting ring 9. The compression spring 11 is movably sleeved outside the connecting pipe 3; When the state inside the oil layer changes and the pressure of the throttle needs to be changed, at this time, pressing the pressing pipe 8 will drive the adjusting ring 9 to press downwards. After the adjusting ring 9 moves, the compression spring 11 is compressed, so that the pressure required to push the first valve 4 increases, thereby adjusting the throttle. After the oil layer pressure changes, the steps of fishing out, adjusting and reusing the throttle are simplified, so that it can be automatically adjusted, improving the working efficiency during the working process and also improving the protection of the oil layer, thus improving the exploitation effect.

[0028] Among them, the adjusting component includes an upper guide ring 12, which is fixedly connected to the oil sleeve 1. The heights of multiple arc-shaped parts at the bottom of the upper guide ring 12 are different. One end of multiple connecting columns 13 is fixedly connected to the bottom of the upper guide ring 12, and the other ends of the multiple connecting columns 13 are fixedly connected to a lower guide ring 14, which is fixedly connected to the oil sleeve 1. One side of the pressing tube 8 is fixedly connected to a moving column 15, and the moving column 15 abuts against the lower end of the upper guide ring 12. The flow blocking component includes multiple pushing blocks 16, which are all fixedly connected to the outer side of the pressing tube 8. One side of an adjusting ring 9 is slidably connected to a fixed ring 17, which is fixedly connected to a protection plate 10. One side of the fixed ring 17 is rotatably connected to a moving ring 18. The flow blocking component includes multiple fixing blocks 19, which are all fixedly connected to the top of the moving ring 18. The bottom of the moving ring 18 is fixedly connected to multiple flow blocking plates 20, and the bottom of the fixed ring 17 is fixedly connected to multiple L-shaped connecting plates 23, which are fixedly connected to the oil sleeve 1; The pressing tube 8 drives the pushing block 16 to press down. During the pressing-down process, the pushing block 16 cooperates with the fixing block 19. Since the pressing tube 8 rotates along the arc of the lower guide ring 14 and the upper guide ring 12 due to the moving column 15, it will drive the pushing block 16 to rotate. The rotation of the pushing block 16 can drive the moving ring 18 and the flow blocking plate 20 to rotate. After the flow blocking plate 20 rotates, it will block the water outlet hole 21. When the state of the oil layer changes and it is necessary to reduce the output of layered water injection into the oil layer, the output of the water flow can be instantaneously controlled, realizing instantaneous adjustment of the water injection output. During the working process, over-injection can be avoided, preventing the oil layer from being damaged due to over-injection, and at the same time better maintaining the pressure balance of the oil layer, preventing the oil layer from generating cracks or micro-cracks due to excessive pressure, which may damage the original structure of the oil layer.

[0029] Among them, the arc shapes of the upper guide ring 12 and the lower guide ring 14 are the same, and the arc peaks of the arcs of the upper guide ring 12 and the lower guide ring 14 are arranged staggeredly. The staggered arc peak arrangement of the upper guide ring 12 and the lower guide ring 14 enables the moving column 15 to rotate along with the arc during movement, driving the pressing tube 8 to rotate, so that the flow blocking component can drive the throttling component to control the water outflow while adjusting.

[0030] Among them, the adjusting ring 9 is movably sleeved inside the protection plate 10, and the protection plate 10 is fixedly connected to the fixed ring 17. The protection plate 10 protects the internal compression spring 11 from being scoured and corroded by water flow to improve the service life.

[0031] Among them, when the baffle 20 rotates to the limit position, the baffle 20 will block two-thirds of the water outlet hole 21, which is used to instantly reduce the output volume of the water flow. When the baffle 20 rotates to block the water outlet hole 21, the flow rate of the water can be greatly attenuated instantaneously, thereby improving the throttling effect and enhancing the instantaneous adjustment function of the throttle on the water flow, avoiding damage to the oil layer caused by the delayed adjustment of the water flow.

[0032] Among them, multiple groups of L-shaped connecting plates 23 are located in the middle of the distance between two baffle plates 20. During operation, since the L-shaped connecting plates 23 are located in the middle of the distance between two baffle plates 20, the baffle plates 20 will not collide with the L-shaped connecting plates 23 during rotation, resulting in shear behavior, thereby affecting the normal function.

[0033] Working principle: When the device is placed inside the oil layer during operation, water is injected into it through the pressing pipe 8 at this time. At this time, the water flow passes through the central pipe 2 and the connecting pipe 3, and then flows out to the outside of the water outlet column 5 through the water outlet groove 6. At this time, the water pressure inside the central pipe 2 increases, and the water flow will push out the first valve 4. The first valve 4 slides backward along the outside of the connecting pipe 3, and the water flow passes through the water outlet hole 21 and then injects water into the oil layer, completing the stratified water injection work; When the state inside the oil layer changes and the pressure of the throttle needs to be changed, pressing the pressing pipe 8 at this time will drive the adjusting ring 9 to press downward. After the adjusting ring 9 moves, the compression spring 11 is compressed, increasing the pressure required to push open the first valve 4, thereby adjusting the throttle. After the oil layer pressure changes, the steps of fishing out, adjusting, and reusing the throttle need to be simplified, enabling it to automatically adjust, improving the working efficiency during operation, and also enhancing the protection of the oil layer, improving the exploitation effect; Pressing down the pressing tube 8 simultaneously drives the moving column 15 to move. The moving column 15 moves from the arc top of the upper guiding ring 12 to the peak-valley of the lower guiding ring 14. During the movement, it will rotate to a certain extent due to the curvature of the lower guiding ring 14. Then, releasing the pressing on the pressing tube 8, the pressing tube 8 will move upward due to the release of the elastic force of the compression spring 11. The movement of the pressing tube 8 drives the moving column 15 to leave the peak-valley of the lower guiding ring 14. During the continuous upward movement of the pressing tube 8, it will drive the moving column 15 to contact the curvature of the upper guiding ring 12, thus moving to another peak-valley of the upper guiding ring 12. During the upward movement of the moving column 15, it will also displace to a certain extent and rotate to a certain extent due to the curvature of the upper guiding ring 12. At the same time, pressing down the pressing tube 8 will drive the pushing block 16 to press down. During the pressing-down process, the pushing block 16 will cooperate with the fixed block 19. Since the pressing tube 8 rotates along the curvature of the lower guiding ring 14 and the upper guiding ring 12 due to the movement of the moving column 15, it will drive the pushing block 16 to rotate. The rotation of the pushing block 16 can drive the moving ring 18 and the flow-blocking plate 20 to rotate. After the flow-blocking plate 20 rotates, it will block the water outlet hole 21. When the state of the oil layer changes and it is necessary to reduce the output of stratified water injection into the oil layer, the output of the water flow can be instantaneously controlled to achieve instantaneous adjustment of the water injection output. During the working process, it can prevent the oil layer from being damaged due to excessive water injection, and at the same time better maintain the pressure balance of the oil layer, preventing the oil layer from generating cracks or micro-cracks due to excessive pressure, which may damage the original structure of the oil layer. And after instantaneously adjusting the water flow rate, after the pressing tube 8 is pushed out and reset, the impact of the water flow will slowly push out the flow-blocking plate 20 to self-recover to adapt to the output after the throttler adjustment is completed, and it will not reduce the output of the water flow due to the blockage of the flow-blocking plate 20, affecting the water injection effect.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A non-recovery type throttle, characterized in that, Comprising: An oil casing (1), a central pipe (2) is arranged inside the oil casing (1), a connecting pipe (3) is fixedly sleeved at the bottom of the central pipe (2), and a throttling component is arranged at the bottom of the connecting pipe (3); An outer side of the central pipe (2) is provided with a pressing pipe (8), and an adjusting component is arranged on an outer side of the pressing pipe (8); The bottom of the pressing pipe (8) is fixedly connected with an adjusting ring (9), a protection plate (10) is arranged at the bottom of the adjusting ring (9), and a flow blocking component is arranged at the bottom of the adjusting ring (9); A joint (7) is arranged at the bottom of the adjusting ring (9), a plurality of water outlet holes (21) are formed in an outer side of the oil casing (1), and a sleeve (22) is fixedly sleeved at the bottom of the joint (7).

2. The non-recovery type throttle described in claim 1, wherein The throttling component includes a first valve (4), the first valve (4) is movably sleeved on an outer side of the connecting pipe (3), a water outlet column (5) is arranged at the bottom of the first valve (4), the first valve (4) and the water outlet column (5) are in mutual abutment, the connecting pipe (3) and the water outlet column (5) are in communication with each other, two groups of the central pipes (2) are in communication with each other through the connecting pipe (3) and the water outlet column (5), the water outlet column (5) is in threaded connection with the joint (7), and a plurality of water outlet grooves (6) are formed in a periphery of the water outlet column (5) and the connecting pipe (3).

3. The non-recovery type flow restrictor according to claim 2, wherein The flow blocking component further includes a compression spring (11), one end of the compression spring (11) is fixedly connected with the first valve (4), the other end of the compression spring (11) is fixedly connected with the adjusting ring (9), and the compression spring (11) is movably sleeved on an outer side of the connecting pipe (3).

4. The non-recovery type flow restrictor according to claim 3, characterized in that, The adjusting component includes an upper guiding ring (12), the upper guiding ring (12) is fixedly connected with the oil casing (1), heights of a plurality of arc-shaped portions at the bottom of the upper guiding ring (12) are different, one ends of a plurality of connecting columns (13) are fixedly connected to the bottom of the upper guiding ring (12), the other ends of the plurality of connecting columns (13) are fixedly connected with a lower guiding ring (14), the lower guiding ring (14) is fixedly connected with the oil casing (1), and a moving column (15) is fixedly connected to one side of the pressing pipe (8), and the moving column (15) abuts against a lower end of the upper guiding ring (12).

5. The non-recovery type flow restrictor according to claim 4, characterized in that, The flow blocking component includes a plurality of pushing blocks (16), the plurality of pushing blocks (16) are all fixedly connected to an outer side of the pressing pipe (8), a fixing ring (17) is slidably connected to one side of the adjusting ring (9), the fixing ring (17) is fixedly connected with the protection plate (10), and a moving ring (18) is rotatably connected to one side of the fixing ring (17).

6. The non-recovery type throttle according to claim 5, wherein The flow blocking component includes a plurality of fixing blocks (19), the plurality of fixing blocks (19) are all fixedly connected to a top of the moving ring (18), a plurality of flow blocking plates (20) are fixedly connected to a bottom of the moving ring (18), and a plurality of L-shaped connecting plates (23) are fixedly connected to a bottom of the fixing ring (17), and the plurality of L-shaped connecting plates (23) are fixedly connected with the oil casing (1).

7. The non-fishing type throttle according to claim 6, characterized in that, The upper guide ring (12) has the same arc shape as the lower guide ring (14), and the arc peaks of the arcs of the upper guide ring (12) and the lower guide ring (14) are staggered.

8. The non-recovery type flow restrictor according to claim 7, characterized in that, The adjusting ring (9) is movably sleeved inside the protection plate (10), and the protection plate (10) is fixedly connected to the fixed ring (17).

9. The non-recovery type throttle according to claim 8, characterized in that, When the flow blocking plate (20) rotates to the extreme position, the flow blocking plate (20) will block two-thirds of the water outlet hole (21) to instantaneously reduce the output volume of the water flow.

10. The non-fishing type throttle according to claim 9, characterized in that, Multiple groups of the L-shaped connecting plates (23) are at the middle of the distance between the two groups of the flow blocking plates (20).

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