Novel electric low-dissipation throttle valve

Abstract

The utility model discloses a novel electric low-dissipation type throttling valve, and relates to the technical field of throttling valves. The novel electric low-dissipation type throttling valve comprises a valve body, an inlet, an outlet, a valve rod, a valve element, a valve seat and an electric actuator which are arranged on a throttling valve body, a filter screen is fixedly inserted into the inlet, the bottom of the inlet is fixedly connected with a collecting pipe, the lower end of the collecting pipe is fixedly connected with an impurity box, and the impurity box is fixedly connected with the valve element. And the side wall of the impurity box is rotationally connected with a cover plate, the interior of the impurity box is connected with an extrusion plate through a reset mechanism, and the top of the extrusion plate is fixedly connected with a sealing plate. When the novel electric low-dissipation type throttling valve is used and the valve rod moves, the closed face of the valve seat can be scraped and cleaned, impurities, rust and the like can be removed, the sealing effect of the throttling valve is guaranteed, meanwhile, impurities on the surface of a filter screen can be scraped and cleaned, the filtering effect of the throttling valve is guaranteed, and the throttling valve is convenient to use. Filtered impurities can be conveniently collected and treated, and the use is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to throttle valve technical field, concretely is a novel electric low dispersion type throttle valve. BACKGROUND

[0002] Electric low dispersion type throttle valve is a kind of valve that combines electric control, throttling function and low dispersion characteristics, first, throttle valve is a kind of common industrial valve, its main function is to control the flow and pressure of fluid medium, by changing the passage cross-sectional area of fluid, throttle valve can adjust flow, realizes the throttling effect of fluid, second, electric throttle valve is a kind of special throttle valve, it utilizes electric device to control the opening and closing of valve, to realize the control of medium flow, since electric throttle valve has the advantages of fast response speed, high precision, it is widely used in the automatic control system of various industrial fields, finally, "low dispersion" refers to the amount of gas or liquid leaked through valve in closed state does not exceed the specified standard value, this is one of the basic requirements of valve quality assurance, the valve meeting the requirements can guarantee the safe operation of system and environmental protection requirements, protect human life and health therefore, electric low dispersion type throttle valve refers to the adjustment of fluid medium flow and pressure by electric control, and has low dispersion characteristics in closed state, this kind of valve not only has the function of automatic control, but also can effectively reduce leakage, improve the safety and environmental performance of system.

[0003] However, the existing electric low dispersion type throttle valve is usually provided with filter screen at the inlet of valve body when in use, so although the liquid entering the throttle valve can be filtered, impurities will accumulate on the filter screen, and if not cleaned for a long time, it will cause blockage and other phenomena, when cleaning, the throttle valve can only be removed from the pipeline, then the impurities on the filter screen are cleaned or replaced, and after maintenance, the filter screen is installed, and then the valve body is installed, it is inconvenient to use, and the closing surface of valve seat is easy to adhere to impurities and produce rust, thereby affecting the sealing effect of throttle valve. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a novel electric low dispersion type throttle valve to solve the problems in the above background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel electric low-emission throttle valve includes a valve body, an inlet, an outlet, a valve stem, a valve core, a valve seat, and an electric actuator, all mounted on the throttle valve body. A filter screen is fixedly inserted into the inlet, and a collection pipe is fixedly connected to the bottom of the inlet. A sludge box is fixedly connected to the lower end of the collection pipe, and a cover plate is rotatably connected to the side wall of the sludge box. A squeezing plate is connected to the sludge box via a reset mechanism, and a sealing plate is fixedly connected to the top of the squeezing plate. A drain pipe is fixedly connected between the squeezing plate and the sealing plate, and a one-way valve is installed in the drain pipe. The squeezing plate is moved by a pushing mechanism. A cleaning mechanism for cleaning the closed surface of the valve seat is provided on the side wall of the valve stem, and a scraping mechanism for scraping and cleaning impurities on the surface of the filter screen is provided at the end of the filter screen.

[0006] Preferably, the cleaning mechanism includes a ring sleeved on the side wall of the valve stem, and two symmetrically arranged stop blocks are fixedly connected to the inner side wall of the valve body. The ring is inserted between the two stop blocks, and a plurality of arrayed fixing blocks are fixedly connected to the side wall of the ring. The bottom of each fixing block is connected to a cleaning block through a first moving mechanism, and the rotation of the ring is driven by a first driving mechanism.

[0007] Preferably, the scraping mechanism includes a rotating shaft rotatably connected to the end of the filter screen, and a plurality of arrayed scrapers are fixedly connected to the side wall of the rotating shaft, and the rotation of the rotating shaft is driven by a second driving mechanism.

[0008] Preferably, the first moving mechanism includes two symmetrically arranged sleeves fixedly connected to the bottom of each fixed block, and a sleeve rod is inserted inside the sleeve. The lower end of the sleeve rod is fixed to the top of the cleaning block, and a first spring is sleeved on the side wall of each sleeve. A plurality of arrayed pull ropes are fixedly connected to the side wall of the valve rod. A plurality of arrayed limiting rings are fixedly connected to the top of the ring, and the lower end of the pull rope passes through the limiting ring and is fixed to the top of the cleaning block.

[0009] Preferably, the first driving mechanism includes an annular groove formed on the side wall of the valve stem, a push plate slidably connected to the annular groove, and two symmetrically arranged first T-shaped guide rods fixedly connected to the top of the push plate. The annular groove is sleeved on the side wall of the first T-shaped guide rods, and a mounting plate is fixedly connected to the top of the push plate. A plurality of arrayed first triangular blocks are fixedly connected to the side wall of the mounting plate, and a push rod is fixedly connected to the end of the filter screen.

[0010] Preferably, the second drive mechanism includes a gear fixedly sleeved on the side wall of the rotating shaft, and the end of the filter screen is connected to a rack via a second moving mechanism.

[0011] Preferably, the second moving mechanism comprises a guide ring fixedly connected to the end of the filter screen, and a moving plate is inserted into the guide ring, the upper end of the moving plate is fixed to the bottom of the rack, and a connecting mechanism is arranged between the moving plate and the pushing plate.

[0012] Preferably, the connecting mechanism comprises two symmetrical circular holes formed in the side wall of the moving plate, a rubber ring is fixedly inserted into the circular hole, a second T-shaped guide rod is inserted into the rubber ring, one end of the second T-shaped guide rod is fixed to the side wall of the pushing plate, and a second spring is sleeved with the side wall of each second T-shaped guide rod.

[0013] Preferably, the reset mechanism comprises two symmetrical third T-shaped guide rods inserted into the side wall of the impurity box, one end of the third T-shaped guide rod is fixed to the side wall of the extrusion plate, the other end of the third T-shaped guide rod is fixedly connected with the connecting plate, and a third spring is sleeved with the side wall of each third T-shaped guide rod.

[0014] Preferably, the pushing mechanism comprises a pushing block fixedly connected to the side wall of the connecting plate, the lower end of the moving plate penetrates through the bottom of the inlet and is fixedly connected with a connecting frame, and a plurality of arrayed second triangular blocks are fixedly connected to the side wall of the connecting frame.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The novel electric low-dispersion throttling valve has the advantages that: when the valve rod moves, the closing surface of the valve seat can be scraped and cleaned to remove impurities and rust marks, thereby ensuring the sealing effect; the impurities on the surface of the filter screen can be scraped and cleaned to ensure the filtering effect; the filtered impurities can be collected and treated conveniently; and the use is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the local cross-sectional structure of the throttling valve body and the impurity box in the utility model;

[0019] Figure 3 It is a schematic diagram of the position of the cleaning mechanism in the utility model;

[0020] Figure 4 It is a schematic diagram of the position of the first driving mechanism in the utility model;

[0021] Figure 5 It is a schematic diagram of the position of the first driving mechanism in the utility model; Figure 2 It is an enlarged structure schematic diagram of position A in the utility model;

[0022] Figure 6 It is an enlarged structure schematic diagram of position A in the utility model;Figure 3 Enlarged structural schematic view at B;

[0023] Figure 7 For Figure 3 Enlarged structural schematic view at C;

[0024] Figure 8 For Figure 4 Enlarged structural schematic view at D;

[0025] Figure 9 For Figure 8 Enlarged structural schematic view at E.

[0026] In the figure: 1, throttle body; 101, valve body; 102, inlet; 103, outlet; 104, valve rod; 105, valve core; 106, valve seat; 107, electric actuator; 2, scraping mechanism; 201, rotating shaft; 202, scraper; 3, second driving mechanism; 301, gear; 302, rack; 4, cleaning mechanism; 401, circular ring; 402, stop block; 403, fixed block; 404, cleaning block; 5, first moving mechanism; 501, sleeve; 502, sleeve rod; 503, first spring; 504, pull rope; 505, guide ring; 6, first driving mechanism; 601, push plate; 602, first T-shaped guide rod; 603, push rod; 604, mounting plate; 605, first triangular block; 606, annular sliding groove; 7, second moving mechanism; 701, guide ring; 702, moving plate; 8, connecting mechanism; 801, circular hole; 802, rubber ring; 803, second T-shaped guide rod; 804, second spring; 9, reset mechanism; 901, third T-shaped guide rod; 902, third spring; 903, connecting plate; 10, pushing mechanism; 1001, push block; 1002, connecting frame; 1003, second triangular block; 11, filter screen; 12, collection pipe; 13, impurity tank; 14, cover plate; 15, extrusion plate; 16, sealing plate; 17, drain pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-9This utility model provides a technical solution: a novel electric low-emission throttle valve, comprising a valve body 101, an inlet 102, an outlet 103, a valve stem 104, a valve core 105, a valve seat 106, and an electric actuator 107, all mounted on the throttle valve body 1. A filter screen 11 is fixedly inserted into the inlet 102, and a collection pipe 12 is fixedly connected to the bottom of the inlet 102. A sludge box 13 is fixedly connected to the lower end of the collection pipe 12, and a cover plate 14 is rotatably connected to the side wall of the sludge box 13. A squeezing plate 15 is connected to the sludge box 13 via a reset mechanism 9, and a sealing plate 16 is fixedly connected to the top of the squeezing plate 15. A drain pipe 17 is fixedly connected between the squeezing plate 15 and the sealing plate 16, and a drain pipe 17 is provided inside the drain pipe 17. The device includes a one-way valve, with its flow direction extending from the end near the extrusion plate 15 to the end near the sealing plate 16. The extrusion plate 15 is moved by a pushing mechanism 10. The side wall of the valve stem 104 is equipped with a cleaning mechanism 4 for cleaning the closed surface of the valve seat 106, and the end of the filter screen 11 is equipped with a scraping mechanism 2 for scraping and cleaning impurities on its surface. During use, when the valve stem 104 moves, it can scrape and clean the closed surface of the valve seat 106, removing impurities and rust to ensure its sealing effect. At the same time, it can scrape and clean impurities on the surface of the filter screen 11 to ensure its filtration effect. Furthermore, it facilitates the collection and treatment of filtered impurities, making it more convenient to use.

[0029] Please see Figure 6 The cleaning mechanism 4 includes a ring 401 sleeved on the side wall of the valve stem 104, and two symmetrically arranged stop blocks 402 are fixedly connected to the inner side wall of the valve body 101. The ring 401 is inserted between the two stop blocks 402, and multiple arrayed fixed blocks 403 are fixedly connected to the side wall of the ring 401. The bottom of each fixed block 403 is connected to a cleaning block 404 through a first moving mechanism 5. The rotation of the ring 401 is driven by a first driving mechanism 6. When the valve stem 104 moves up or down, the ring 401 is driven to reciprocate through the first driving mechanism 6. The rotation of the ring 401 drives the cleaning block 404 to reciprocate through the fixed blocks 403 and the first moving mechanism 5, thereby scraping and cleaning the closed surface of the valve seat 106, removing impurities and rust, and ensuring its sealing effect.

[0030] Please see Figure 7 and Figure 8The scraping mechanism 2 comprises a rotating shaft 201 rotatably connected to the end of the filter screen 11, and a plurality of scraping plates 202 are fixedly connected to the side wall of the rotating shaft 201 in an array, and the rotation of the rotating shaft 201 is driven by the second driving mechanism 3. When the valve rod 104 moves downward, the rotating shaft 201 is driven to rotate by the second driving mechanism 3, and in turn drives the scraping plates 202 to reciprocate, so that the impurities on the surface of the filter screen 11 can be scraped and cleaned, the filtering effect is ensured, and the normal passing of the liquid is ensured. The impurities scraped are collected in the cover plate 14 under the action of gravity through the collecting pipe 12.

[0031] Please refer to Figure 6 The first moving mechanism 5 comprises two symmetrically arranged sleeve pipes 501 fixedly connected to the bottom of each fixed block 403, and a sleeve rod 502 is inserted into the sleeve pipe 501, the lower end of the sleeve rod 502 is fixed to the top of the cleaning block 404, and the side wall of each sleeve pipe 501 is sleeved with a first spring 503. A plurality of arrayed pull ropes 504 are fixedly connected to the side wall of the valve rod 104, and a plurality of arrayed limiting rings 505 are fixedly connected to the top of the circular ring 401, and the lower end of the pull rope 504 penetrates through the limiting ring 505 and is fixed to the top of the cleaning block 404. When the valve rod 104 moves downward, the cleaning block 404 can be pulled upward and withdrawn from the valve seat 106 by the pull rope 504 when the valve core 105 approaches the cleaning block 404, and at the same time, the first spring 503 is compressed, so that the valve core 105 can be normally sealed with the valve seat 106.

[0032] Please refer to Figure 6 , Figure 8 and Figure 9 The first driving mechanism 6 comprises an annular sliding groove 606 formed in the side wall of the valve rod 104, and a push plate 601 is slidably connected to the annular sliding groove 606. The top of the push plate 601 is fixedly connected with two symmetrically arranged first T-shaped guide rods 602, the circular ring 401 is sleeved on the side wall of the first T-shaped guide rod 602, and the top of the push plate 601 is fixedly connected with a mounting plate 604. The side wall of the mounting plate 604 is fixedly connected with a plurality of arrayed first triangular blocks 605, and the end of the filter screen 11 is fixedly connected with a push rod 603. When the valve rod 104 moves upward or downward, the valve core 105 moves downward synchronously, and at the same time, the push plate 601 moves. The movement of the push plate 601 drives the mounting plate 604 and the first triangular block 605 to move synchronously. When the first triangular block 605 abuts against the push rod 603, the push plate 601 can be rotated along the annular sliding groove 606. When the first triangular block 605 passes the push rod 603, the push plate 601 can be rotated to reset under the action of the connecting mechanism 8. Thus, the push plate 601 can reciprocate, and the circular ring 401 can reciprocate through the first T-shaped guide rod 602.

[0033] Please refer to Figure 8 and Figure 9 The second driving mechanism 3 comprises a gear 301 fixedly sleeved on the side wall of the rotating shaft 201, and the end of the filter screen 11 is connected with a rack 302 through the second moving mechanism 7. When the push plate 601 moves up and down, the rack 302 is driven to move synchronously by the second moving mechanism 7, and the gear 301 and the rotating shaft 201 are pushed to reciprocate, thereby driving the scraper 202 to reciprocate.

[0034] Please refer to Figure 9 The second moving mechanism 7 comprises a guide ring 701 fixedly connected to the end of the filter screen 11, and a moving plate 702 is inserted in the guide ring 701. The upper end of the moving plate 702 is fixed to the bottom of the rack 302, and a connecting mechanism 8 is arranged between the moving plate 702 and the push plate 601. When the push plate 601 moves up and down, the moving plate 702 can be driven to reciprocate up and down through the connecting mechanism 8. When the moving plate 702 moves up and down, the rack 302 is driven to move synchronously.

[0035] Please refer to Figure 9 The connecting mechanism 8 comprises two symmetrical circular holes 801 arranged in the side wall of the moving plate 702, a rubber ring 802 is fixedly inserted in the circular hole 801, a second T-shaped guide rod 803 is inserted in the rubber ring 802, one end of the second T-shaped guide rod 803 is fixed to the side wall of the push plate 601, and a second spring 804 is sleeved on the side wall of each second T-shaped guide rod 803. When the first triangular block 605 abuts against the push rod 603, the push plate 601 can be driven to rotate along the annular sliding groove 606, and at the same time, the rubber ring 802 is deformed, and the second spring 804 is compressed. When the first triangular block 605 passes the push rod 603, the push plate 601 can be rotated to reset under the action of the rubber ring 802 and the second spring 804. Through the above reciprocating process, the push plate 601 can be driven to reciprocate.

[0036] Please refer to Figure 5 The reset mechanism 9 comprises two symmetrical third T-shaped guide rods 901 inserted in the side wall of the impurity box 13, one end of the third T-shaped guide rod 901 is fixed to the side wall of the extrusion plate 15, and the other end of the third T-shaped guide rod 901 is fixedly connected with a connecting plate 903. The side wall of each third T-shaped guide rod 901 is sleeved with a third spring 902, which guides and resets the movement of the extrusion plate 15.

[0037] Please refer to Figure 5The pushing mechanism 10 comprises a pushing block 1001 fixedly connected to the side wall of the connecting plate 903, and the lower end of the moving plate 702 penetrates through the bottom of the inlet 102 and is fixedly connected with a connecting frame 1002, the side wall of the connecting frame 1002 is fixedly connected with a plurality of arrayed second triangular blocks 1003, when the moving plate 702 reciprocates up and down, the second triangular blocks 1003 are driven by the connecting frame 1002 to reciprocate up and down, when the second triangular blocks 1003 abut against the side wall of the pushing block 1001, the extruding plate 15 moves towards the cover plate 14, at the same time, the connecting plate 903 is compressed, when the second triangular blocks 1003 pass the pushing block 1001, the extruding plate 15 can be reset under the action of the connecting plate 903, thus reciprocating, the impurities collected in the impurity box 13 can be extruded.

[0038] Working principle: in use, when the valve rod 104 moves upward or downward, the valve core 105 is driven to move downward synchronously, at the same time, the pushing plate 601 is driven to move, the movement of the pushing plate 601 drives the installation plate 604 and the first triangular block 605 to move synchronously, when the first triangular block 605 abuts against the pushing rod 603, the pushing plate 601 can be driven to rotate along the annular sliding groove 606, at the same time, the rubber ring 802 is deformed, the second spring 804 is compressed, when the first triangular block 605 passes the pushing rod 603, the pushing plate 601 can be reset under the action of the rubber ring 802 and the second spring 804, thus reciprocating, the pushing plate 601 can reciprocate and rotate, and the circular ring 401 is driven to reciprocate and rotate by the first T-shaped guide rod 602, the rotation of the circular ring 401 drives the cleaning block 404 to reciprocate and rotate through the fixed block 403 and the first moving mechanism 5, so that the closed surface of the valve seat 106 can be scraped and cleaned, and impurities and rust marks can be removed, so as to ensure the sealing effect;

[0039] When the valve rod 104 moves downward, when the valve core 105 approaches the cleaning block 404, the cleaning block 404 can be pulled upward and out of the valve seat 106 by the pull rope 504, at the same time, the first spring 503 is compressed, so that the valve core 105 can be normally sealed with the valve seat 106;

[0040] And, the filter screen 11 is arranged in the inlet 102, which can filter the larger impurities in the liquid, avoid impacting the valve core 105 and the valve seat 106, ensure the sealing effect and service life, and when the push plate 601 moves up and down, the connecting mechanism 8 can drive the moving plate 702 to move up and down, when the moving plate 702 moves up and down, the rack 302 moves synchronously, and the pinion 301 and the rotating shaft 201 reciprocate, and the scraper 202 reciprocates, so that the impurities on the surface of the filter screen 11 can be scraped and cleaned, ensuring the filtering effect and the normal passing of the liquid.

[0041] The scraped impurities fall into the cover plate 14 through the collecting pipe 12 under the action of gravity, and when the moving plate 702 moves up and down, the connecting frame 1002 drives the second triangular block 1003 to move up and down, when the second triangular block 1003 abuts against the side wall of the push block 1001, the extrusion plate 15 moves towards the cover plate 14, and at the same time, the connecting plate 903 is compressed, when the second triangular block 1003 passes the push block 1001, the extrusion plate 15 can move back under the action of the connecting plate 903, so as to extrude the impurities collected in the impurity box 13, and at the same time, the sealing plate 16 seals the bottom of the collecting pipe 12, at this time, the liquid remaining in the impurities can enter the collecting pipe 12 through the drain pipe 17, ensuring the extrusion effect, so as to facilitate subsequent processing;

[0042] When the impurities in the impurity box 13 need to be processed, the connecting plate 903 is pushed to move the extrusion plate 15 towards the cover plate 14, so that the sealing plate 16 seals the bottom of the collecting pipe 12, and at the same time, the impurities in the impurity box 13 can be extruded again, and the liquid remaining in the impurities is extruded into the collecting pipe 12 through the drain pipe 17, then the cover plate 14 is opened and the extruded impurities are taken out for processing, so that the collection and processing of the impurities are more convenient and fast.

Claims

1. A new type of electric low drift throttling valve, comprising a valve body (101), an inlet (102), an outlet (103), a valve stem (104), a valve core (105), a valve seat (106) and an electric actuator (107) arranged on a throttling valve body (1), characterized in that: The import (102) is fixedly provided with a filter screen (11), and the bottom of the import (102) is fixedly connected with a collecting pipe (12), the lower end of the collecting pipe (12) is fixedly connected with a impurity tank (13), and the sidewall of the impurity tank (13) is rotatably connected with a cover plate (14), the impurity tank (13) is connected with a pressing plate (15) through a reset mechanism (9), and the top of the pressing plate (15) is fixedly connected with a sealing plate (16), the pressing plate (15) and the sealing plate (16) are fixedly connected with a drain pipe (17), and the drain pipe (17) is provided with a one-way valve, the movement of the pressing plate (15) is pushed by a pushing mechanism (10), the sidewall of the valve rod (104) is provided with a cleaning mechanism (4) for cleaning the closing surface of the valve seat (106), and the end of the filter screen (11) is provided with a scraping mechanism (2) for scraping and cleaning the impurities on the surface thereof.

2. A novel electrically operated low-bleed throttling valve according to claim 1, characterized in that: The cleaning mechanism (4) comprises a circular ring (401) sleeved on the sidewall of the valve rod (104), and the inner sidewall of the valve body (101) is fixedly connected with two symmetrically arranged stop blocks (402), the circular ring (401) is inserted between the two stop blocks (402), and the sidewall of the circular ring (401) is fixedly connected with a plurality of arrayed fixing blocks (403), the bottom of each fixing block (403) is connected with a cleaning block (404) through a first moving mechanism (5), and the rotation of the circular ring (401) is driven by a first driving mechanism (6).

3. A novel electrically operated low-bleed throttling valve according to claim 2, characterized in that: The scraping mechanism (2) comprises a rotating shaft (201) rotatably connected to the end of the filter screen (11), the sidewall of the rotating shaft (201) is fixedly connected with a plurality of arrayed scraping plates (202), and the rotation of the rotating shaft (201) is driven by a second driving mechanism (3).

4. A novel electrically operated low-bleed throttling valve according to claim 3, characterized in that: The first moving mechanism (5) comprises two symmetrically arranged sleeve pipes (501) fixedly connected to the bottom of each fixing block (403), and a sleeve rod (502) is inserted in the sleeve pipe (501), the lower end of the sleeve rod (502) is fixed to the top of the cleaning block (404), and the sidewall of each sleeve pipe (501) is sleeved with a first spring (503), the sidewall of the valve rod (104) is fixedly connected with a plurality of arrayed pull ropes (504), the top of the circular ring (401) is fixedly connected with a plurality of arrayed limiting rings (505), and the lower end of the pull rope (504) penetrates the limiting ring (505) and is fixed to the top of the cleaning block (404).

5. A novel electrically operated low-bleed throttling valve according to claim 4, characterized in that: The first driving mechanism (6) comprises a ring-shaped sliding groove (606) opened on the side wall of the valve rod (104), the ring-shaped sliding groove (606) is slidably connected with a push plate (601), the top of the push plate (601) is fixedly connected with two symmetrically arranged first T-shaped guide rods (602), the circular ring (401) is sleeved on the side wall of the first T-shaped guide rod (602), the top of the push plate (601) is fixedly connected with a mounting plate (604), the side wall of the mounting plate (604) is fixedly connected with a plurality of arrayed first triangular blocks (605), and the end of the filter screen (11) is fixedly connected with a push rod (603).

6. A novel electrically operated low-bleed throttling valve according to claim 5, characterized in that: The second driving mechanism (3) comprises a gear (301) fixedly sleeved on the side wall of the rotating shaft (201), and the end of the filter screen (11) is connected with a rack (302) through the second moving mechanism (7).

7. A novel electrically operated low-bleed throttling valve according to claim 6, characterized in that: The second moving mechanism (7) comprises a guide ring (701) fixedly connected to the end of the filter screen (11), and a moving plate (702) is inserted into the guide ring (701), the upper end of the moving plate (702) is fixed to the bottom of the rack (302), and a connecting mechanism (8) is arranged between the moving plate (702) and the push plate (601).

8. A novel electrically operated low-bleed throttling valve according to claim 7, characterized in that: The connecting mechanism (8) comprises two symmetrically arranged circular holes (801) opened on the side wall of the moving plate (702), a rubber ring (802) is fixedly inserted into the circular hole (801), a second T-shaped guide rod (803) is inserted into the rubber ring (802), one end of the second T-shaped guide rod (803) is fixed to the side wall of the push plate (601), and the side wall of each second T-shaped guide rod (803) is sleeved with a second spring (804).

9. A new electrically operated low-bleed throttling valve according to claim 1, characterized in that: The reset mechanism (9) comprises two symmetrically arranged third T-shaped guide rods (901) inserted into the side wall of the impurity box (13), one end of the third T-shaped guide rod (901) is fixed to the side wall of the extrusion plate (15), the other end of the third T-shaped guide rod (901) is fixedly connected with a connecting plate (903), and the side wall of each third T-shaped guide rod (901) is sleeved with a third spring (902).

10. A novel electrically operated low-bleed throttling valve according to claim 9, characterized in that: The pushing mechanism (10) comprises a push block (1001) fixedly connected to the side wall of the connecting plate (903), and the lower end of the moving plate (702) penetrates through the bottom of the inlet (102) and is fixedly connected with a connecting frame (1002), the side wall of the connecting frame (1002) is fixedly connected with a plurality of arrayed second triangular blocks (1003).

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