CN112503191B

CN112503191B - Double-layer double-door electric flap valve

Info

Publication number: CN112503191B
Application number: CN202011363732.9A
Authority: CN
Inventors: 郑坚平; 蓝林根
Original assignee: Zhejiang Hongfeng Machinery Equipment Co ltd
Current assignee: Zhejiang Hongfeng Machinery Equipment Co ltd
Priority date: 2020-11-28
Filing date: 2020-11-28
Publication date: 2022-06-21
Anticipated expiration: 2040-11-28
Also published as: CN112503191A

Abstract

The invention discloses a double-layer double-door electric flap valve, which comprises a square tube shell, wherein the square tube shell comprises a square mounting cover, a top leaning rod, a long rectangular cover and a hexagonal positioning shaft, wherein the upper and lower square tube shells are symmetrically locked together to form a main body supporting frame of the flap valve, the left and right side walls of the two square tube shells are symmetrically and convexly welded with two square mounting covers, and the outer openings of the two square mounting covers are locked and blocked with cover plates; the middle positions of the rear side walls of the two prescription pipe shells are respectively welded with a long rectangular cover in a convex mode, a transverse beam baffle plate is arranged in the two long rectangular covers in a rotating and inserting mode, and a turning plate is arranged in the two prescription installation covers in a rotating and inserting mode; two top leaning rods are symmetrically welded on the left inner wall and the right inner wall of the shell of the two prescription pipes. The clamping grooves in the four top leaning rods and the two transverse beam baffles can keep the bottom surfaces of the four top leaning rods and the two transverse beam baffles to be flat when the four top leaning rods and the two transverse beam baffles are clamped and combined, and the sealing performance of the four turning plates when the turning plates are closed is guaranteed.

Description

Double-layer double-door electric flap valve

Technical Field

The invention relates to the technical field of electric flap valves, in particular to a double-layer double-door electric flap valve.

Background

The flap valve is used as an ash bucket unloading device of various removing devices and a feeding and unloading device of various mills, dryers, storage bins and other devices, prevents wild wind from blowing in, and takes a heavy hammer, an electric motor and a push rod as main driving forces. The valve plate of flap valve is opened automatically under the action of material gravity, and after the material fell, counter weight lever system made the valve plate automatic re-setting, prevented that open air from blowing in to accomplish the transport of material. The double-layer flap valve mainly utilizes the switches of the upper valve and the lower valve at different time to ensure that a layer of valve plate is always in a closed and isolated state in the middle of the equipment so as to prevent air channeling.

The double-layer double-door electric air-locking turning plate discharge valve is widely applied to the industries of chemical industry, food, building materials, metallurgy, electric power and the like, the existing double-layer single-door electric air-locking turning plate discharge valve is a double-layer discharge valve which is arranged up and down, each layer of discharge valve comprises a valve body, a discharge turning plate and a transmission shaft, the transmission shafts are horizontally arranged, penetrated and supported on the side walls of two sides of the valve body, the upper parts of the discharge turning plates are fixedly connected to the transmission shafts in the valve body, and the discharge valves can be opened or closed by rotating the transmission shafts; one side of the valve body is provided with a deflector rod, and the other side of the valve body is provided with a counterweight structure; one end of the deflector rod is connected with the end part of the transmission shaft and can drive the transmission shaft to rotate; the counterweight structure comprises a counterweight block, a counterweight rod and a bearing; the bearing is connected with the end part of the transmission shaft and can synchronously rotate with the transmission shaft; one end of the counterweight rod is fixedly connected with the bearing, the other end of the counterweight rod is in a suspension extending shape, and the counterweight block is sleeved on the counterweight rod.

Patent CN201720507046.1 discloses a double-deck electronic flap valve, including last casing and lower casing, it has the flap axle respectively to go up casing and lower casing upper end, the flap is equipped with down respectively down the board, go up casing and lower casing side and still be connected with the weight through the hammer stem respectively, the flap axle of going up casing and lower casing upper end is connected with associated mode speed reducer through the vertical axis respectively, lower casing side is equipped with the speed reducer seat, the associated mode speed reducer is fixed on the speed reducer seat, the flap on be provided with infrared detector, infrared detector circuit connection have the controller, the controller setting in speed reducer seat upper end and liquid crystal display has. The turnover plate has the advantages of simple structure, reasonable design, capability of monitoring the work of the turnover plate through the infrared detector, capability of finding problems at any time, difficulty in abrasion and blocking of the turnover plate and high working efficiency.

Patent CN201821868850.3 discloses a double-deck electronic lock wind flap valve, it includes first casing and the second casing that top-down set up, first valve arm pivot one end is rotated with first valve arm and is connected, first valve plate rotates and sets up in the other end of first valve arm pivot, second valve arm pivot one end rotates with the second valve arm and is connected, the second valve plate rotates and sets up in the other end of second valve arm pivot, still include the cam, the one end that the cam extends is provided with the fixed column, first valve arm and second valve arm pass through the fixed column and set up in the cam, first valve arm pivot is provided with first gyro wheel, first valve arm is provided with the first spout that removes along first gyro wheel with first gyro wheel complex, second valve arm pivot is provided with the second gyro wheel, the second valve arm is provided with the second spout that removes along the second gyro wheel with the second gyro wheel complex, reduce the impact, increase of service life.

However, the middle position of the internal channel of the existing four-leaf opening and closing double-door electric flap valve is mostly provided with two cross-brace beam rods for abutting against the seal, the two cross-brace beam rods can block the sucking materials in the channel, so that the materials are easy to gather to block the channel, the subsequent cleaning is inconvenient, in addition, the double-door flap valve is mostly only provided with one opening and closing use mode, the opening and closing are synchronously performed in the same direction or alternatively performed in the reverse direction, and the application is relatively single.

Disclosure of Invention

The invention aims to provide a double-layer double-door electric flap valve, which aims to solve the problems that two cross-brace beam rods for abutting against and sealing are arranged at the middle positions of an inner channel in the background technology, the two cross-brace beam rods can block and block pumped materials in the channel, the materials are easy to gather and block the channel, subsequent cleaning is inconvenient, and the double-door flap valve is only provided with an opening and closing use mode in the same direction, synchronous opening and closing in the same direction or alternatively opening and closing in the opposite direction, and the application is single.

In order to achieve the purpose, the invention provides a double-layer double-door electric flap valve which comprises a square tube shell, wherein the square tube shell comprises a square mounting cover, a top leaning rod, a long-strip rectangular cover and a hexagonal positioning shaft, wherein the upper and lower square tube shells are symmetrically locked together to form a main body supporting frame of the flap valve, the left and right side walls of the two square tube shells are symmetrically and convexly welded with two square mounting covers, and the outer openings of the two square mounting covers are locked and blocked with cover plates; the middle positions of the rear side walls of the two prescription pipe shells are respectively welded with a long rectangular cover in a convex mode, a transverse beam baffle plate is arranged in the two long rectangular covers in a rotating and inserting mode, and a turning plate is arranged in the two prescription installation covers in a rotating and inserting mode; two top leaning rods are symmetrically welded on the left inner wall and the right inner wall of the two prescription pipe shells, and a T-shaped driving frame and a Chinese character 'shan' shaped driving frame are correspondingly slidably inserted on the front side walls of the two prescription pipe shells up and down; two hexagonal positioning shafts are symmetrically welded at the left positions of the rear side walls of the two prescription pipe shells, a rectangular transmission frame is sleeved on the two hexagonal positioning shafts in a sliding mode, and an oil cylinder is locked and fixed on the front side wall of the locking and butting position of the two prescription pipe shells.

Preferably, in the above scheme, the oil cylinder includes a connecting rod, the front end of the piston rod of the oil cylinder is symmetrically and rotatably connected with two connecting rods, and the tail ends of the two connecting rods are correspondingly and rotatably connected with the T-shaped driving frame and the middle vertical support sliding rod of the chevron-shaped driving frame.

Preferably, in the above scheme, the turning plate comprises driven gears, the turning plates are installed in an up-down symmetrical turning manner, the back parts of the turning plates are welded with a rotating rod, the front ends of the rotating rods are sleeved with one driven gear, and the rear end sections of the two rotating rods on the left side are also sleeved with one driven gear.

Preferably, in the above scheme, the T-shaped driving frame comprises a driving rod, and two vertical driving rods are symmetrically sleeved and slidably mounted on the cross-brace shaft lever at the top end of the T-shaped driving frame.

Preferably, in the above scheme, the sliding sleeves at the bottoms of the two driving rods are all penetrated and locked with a plum bolt, and a row of tooth sockets are arranged on two sides of each of the two driving rods.

Preferably, in the above-described aspect, the two vertical support rack bars on the left and right of the chevron-shaped drive frame are in meshing contact with the two driven gears on the front side of the bottom portion, respectively, and the two drive bars are in meshing contact with the two driven gears on the front side of the top end, respectively.

Preferably, in the above scheme, the crosspiece beam plates include a rotating shaft and a swinging plate, the tail ends of the two crosspiece beam plates are welded and fixed with a rotating shaft, the left ends of the two rotating shafts are sleeved with a pinion, the right ends of the two rotating shafts are welded with a swinging plate, and two tension springs are rotatably supported and hung between the two swinging plates and the rear side walls of the two prescription pipe shells.

Preferably, in the above scheme, a row of tooth grooves are formed on the end faces of the outer sides of the left vertical support struts of the two rectangular transmission frames, the two rows of tooth grooves are correspondingly in meshing contact with the two driven gears at the rear side, a row of tooth plates are respectively arranged on the inner sides of the upper half sections of the right vertical support struts of the two rectangular transmission frames, and the two rows of tooth plates are correspondingly in meshing contact with the pinions at the left ends of the two rotating shafts.

Preferably, in the above scheme, the middle section of the four top leaning rods is provided with one clamping groove, the head and tail end sections of the two transverse beam blocking plates are also provided with one clamping groove, the two transverse beam blocking plates can be rotatably combined with the four top leaning rods in a clamping manner through the clamping grooves to form two horizontal leaning frames, and the four turning plates can be rotatably leaned on the bottom sealing surface of the two horizontal leaning frames when being closed.

Compared with the prior art, the double-layer double-door electric flap valve has the beneficial effects that:

1. the two driving rods can be arranged on the outer sides of the two driven gears in a sliding mode in the opposite direction along the cross support shaft at the top end of the T-shaped driving frame, so that two rows of tooth grooves on the inner sides of the driving rods are in meshing contact transmission with the two driven gears (as shown in fig. 6), and an upper turning plate and a lower turning plate can be switched from a use state of synchronous rotating opening and closing to a use state of opposite turning and alternative opening and closing;

2. the springs on the two swing plates can pull and keep the two transverse baffle plates in a horizontally supported abutting use state, and the two transverse baffle plates can be rotatably arranged in a drooping state when in an opening state, so that the middle channel of the two prescription pipe shells is completely emptied, the two transverse baffle plates are prevented from being statically arranged in the transverse support state for a long time to cause interception and blockage on materials sucked in the channel, and the materials are easy to gather to block the square pipe shell, and the subsequent cleaning is troublesome and inconvenient;

3. the inner sides of the upper half sections of the right vertical support supporting rods of the two rectangular transmission frames are respectively provided with one row of tooth plates, the two rows of tooth plates are correspondingly meshed and contacted with the pinions at the left ends of the two rotating shafts, and the upper and lower groups of turning plates can be linked to drive the two transverse baffle beam plates to swing and place in a sagging state when being opened in a rotary manner through the power transmission of the two rectangular transmission frames, so that the trouble that manual force is used for swinging downwards and positioning the two transverse baffle beam plates is eliminated, the use and operation steps of the turnover valve are simplified, and time and labor are saved;

4. the two transverse baffle beam plates can rotate and are combined with the four top leaning rods in a clamping way to form two horizontal leaning surrounding frames, the four turning plates can rotate to lean against the bottom sealing surfaces of the two horizontal leaning surrounding frames when being closed, the four top leaning rods and the clamping grooves on the two transverse baffle beam plates can enable the bottom surfaces of the four top leaning rods and the two transverse baffle beam plates to be kept flat when being combined in a clamping way, no bulge exists, and the sealing performance of the four turning plates when being closed is guaranteed;

5. according to the invention, the two driving rods are positioned by inserting the two plum blossom bolts, and can rotate downwards around the cross-brace shaft lever only by loosening the two plum blossom bolts, so that the two driving rods can be staggered with the two driven gears, and the two driven gears are prevented from blocking the outward sliding adjustment of the two driving rods;

6. the lower half section of the right vertical support rod of the two rectangular transmission frames is of a polished rod structure, so that the two transverse baffle beam plates are meshed to drive the two transverse baffle beam plates to swing downwards when the two groups of turning plates rotate to a half stroke, and mutual blocking interference caused by synchronous rotation and downward swinging of the two groups of turning plates and the two transverse baffle beam plates is avoided.

Drawings

FIG. 1 is a schematic structural view of a double-layer double-door electric flap valve of the present invention;

FIG. 2 is a schematic diagram of the rear three-dimensional structure of the double-layer double-door electric flap valve of the present invention;

FIG. 3 is a schematic top three-dimensional structure view of the double-layer double-door electric flap valve of the present invention;

FIG. 4 is a schematic view of the square mounting cover of the present invention in a disassembled state;

FIG. 5 is a schematic view of the half-section internal structure of the present invention;

FIG. 6 is a schematic view showing the state of hanging two turning plates at the upper side of the present invention;

FIG. 7 is a schematic view of the mounting position of the rectangular transmission frame of the present invention;

FIG. 8 is a bottom view of the present invention;

FIG. 9 is a schematic view of the construction of the leaning rod of the present invention;

FIG. 10 is an enlarged view of portion A of FIG. 2 according to the present invention;

FIG. 11 is an enlarged view of portion B of FIG. 5 according to the present invention.

Description of the reference numerals:

1. a square tube shell; 101. a square mounting cover; 102. abutting against the rod; 103. a rectangular cover strip; 104. a hexagonal positioning shaft; 2. an oil cylinder; 201. a connecting rod; 3. a chevron drive frame; 4. turning over a plate; 401. a driven gear; 5. a T-shaped driving frame; 501. a drive rod; 6. a rectangular transmission frame; 7. a cross beam panel; 701. a rotating shaft; 702. and (6) swinging the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1:

referring to fig. 1 to 11, the double-layer double-door electric flap valve according to a preferred embodiment of the present invention includes a square tube housing 1, the square tube housing 1 includes a square mounting cover 101, a leaning rod 102, a long rectangular cover 103 and a hexagonal positioning shaft 104, the upper and lower two prescription tube housings 1 are symmetrically locked together to form a main body supporting frame of the flap valve, and the left and right side walls of the two prescription tube housings 1 are symmetrically and convexly welded with two prescription mounting covers 101, and the outer openings of the two prescription mounting covers 101 are locked and blocked by cover plates. The middle positions of the rear side walls of the two prescription pipe shells 1 are respectively welded with a long rectangular cover 103 in a convex welding mode, a transverse beam baffle plate 7 is installed inside the two long rectangular covers 103 in a rotating and inserting mode, and a turning plate 4 is installed inside the two prescription installation covers 101 in a rotating and inserting mode. Two abutting rods 102 are symmetrically welded on the left and right inner walls of the two prescription pipe shells 1, and a T-shaped driving frame 5 and a Chinese character 'shan' driving frame 3 are correspondingly slidably inserted on the front side walls of the two prescription pipe shells 1 from top to bottom. Two six-edge positioning shafts 104 are symmetrically welded at the left positions of the rear side walls of the two prescription pipe shells 1, a rectangular transmission frame 6 is sleeved and slidably mounted on the two six-edge positioning shafts 104, and an oil cylinder 2 is locked and fixed on the front side wall of the locking and butting position of the two prescription pipe shells 1. The turning plate 4 comprises driven gears 401, the turning plates 4 are symmetrically installed in an up-down overturning mode at four positions, rotating rods are welded to the back of the turning plates 4 at four positions, the driven gears 401 are sleeved at the front ends of the rotating rods at four positions, and the driven gears 401 are sleeved on the rear end sections of the two rotating rods at the left side. The left and right vertical support rack rods of the V-shaped driving frame 3 are correspondingly engaged and contacted with two driven gears 401 at the front side of the bottom, the two driving rods 501 are correspondingly engaged and contacted with two driven gears 401 at the front side of the top end, and the V-shaped driving frame 3 and the T-shaped driving frame 5 can be vertically reciprocated, slidingly and engaged to drive the four turning plates 4 to rotate forwards and reversely. The oil cylinder 2 comprises a connecting rod 201, the front end of a piston rod of the oil cylinder 2 is symmetrically and rotatably connected with two connecting rods 201, the tail ends of the two connecting rods 201 are correspondingly and rotatably connected with the T-shaped driving frame 5 and the middle vertical support slide rod of the E-shaped driving frame 3, the connecting rod 201, the T-shaped driving frame 5, the E-shaped driving frame 3 and the piston rod of the oil cylinder 2 form a double-connecting-rod slide block mechanism together, the piston rod of the oil cylinder 2 can slide forwards and backwards to push and drive the T-shaped driving frame 5 and the E-shaped driving frame 3 to slide in opposite directions, and the upper and lower two groups of turning plates 4 are synchronously turned and closed.

In a preferred embodiment, the T-shaped driving frame 5 includes a driving rod 501, two vertical driving rods 501 are symmetrically sleeved and slidably mounted on a cross-support shaft rod at the top end of the T-shaped driving frame 5, a quincuncial bolt is locked on sliding sleeves at the bottoms of the two driving rods 501 in a penetrating manner, a row of tooth sockets are disposed on two sides of each of the two driving rods 501, the two driving rods 501 can be arranged outside the two driven gears 401 along the cross-support shaft at the top end of the T-shaped driving frame 5 in a sliding manner in opposite directions, so that the two rows of tooth sockets on the inner side of the driving rods are in meshing contact transmission with the two driven gears 401 (as shown in fig. 6), and thus, the two sets of turning plates 4 can be switched from a use state of synchronous rotation opening and closing to a use state of opposite turning alternating opening and closing.

Example 2:

further, the transverse beam baffles 7 comprise rotating shafts 701 and swing plates 702, the tail ends of the two transverse beam baffles 7 are fixedly welded with the rotating shafts 701, the left ends of the two rotating shafts 701 are respectively sleeved with a pinion, the right ends of the two rotating shafts 701 are respectively welded with the swing plates 702, two tension springs are rotatably hung between the two swing plates 702 and the rear side walls of the two square tube shells 1, the springs on the two swing plates 702 can pull and pull the two transverse beam baffles 7 to be horizontally supported and abutted to the use state, the two transverse beam baffles 7 can be rotatably arranged in a sagging state when the turnover valve is in an opening state, the middle channels of the two square tube shells 1 are completely emptied, the situation that the two transverse beam baffles 7 are arranged in a static supporting state for a long time to block sucked materials in the channels is avoided, and the materials are easy to gather to block the square tube shells 1, and the subsequent cleaning is inconvenient.

Further, a row of tooth grooves are formed in the end face of the outer side of the left vertical supporting rod of the two rectangular transmission frames 6, the two rows of tooth grooves are correspondingly in meshing contact with the two driven gears 401 on the rear side, a row of tooth sheets is arranged on the inner side of the upper half section of the right vertical supporting rod of the two rectangular transmission frames 6, the two rows of tooth sheets are correspondingly in meshing contact with the pinions on the left ends of the two rotating shafts 701, the upper turning plate 4 and the lower turning plate 4 can be linked to drive the two transverse beam plates 7 to swing and be arranged in a drooping state when the turning plates are opened in a rotating mode through power transmission of the two rectangular transmission frames 6, the trouble that manual force is exerted to swing downwards and the two transverse beam plates 7 are located is eliminated, the using operation steps of the turning valve are simplified, and time and labor are saved.

Furthermore, the middle sections of the four top leaning rods 102 are all provided with a clamping groove, the head end and the tail end of the two transverse baffle beam plates 7 are also provided with a clamping groove, the two transverse baffle beam plates 7 can be rotatably combined with the four top leaning rods 102 in a clamping mode to form two horizontal supporting and surrounding frames, the four turning plates 4 can be rotatably supported and supported on the bottom sealing surfaces of the surrounding frames in a supporting mode when being closed, the four top leaning rods 102 and the clamping grooves in the two transverse baffle beam plates 7 can enable the bottom surfaces of the four top leaning rods 102 and the two transverse baffle beam plates 7 to be kept flat and free of bulges when being combined in a clamping mode when the four turning plates 4 are closed, and the sealing performance of the four turning plates 4 when being closed is guaranteed.

Example 3:

the working principle of the double-layer double-door electric flap valve in a preferred embodiment of the invention is as follows: when the opening and closing states of the two groups of turning plates 4 are switched, the initial states of the turning plates 4 at the upper sides are rotationally arranged at the sagging positions; the connecting rod 201, the T-shaped driving frame 5, the E-shaped driving frame 3 and the piston rod of the oil cylinder 2 jointly form a double-connecting-rod sliding block mechanism, the piston rod of the oil cylinder 2 can slide forwards and backwards to push and drive the T-shaped driving frame 5 and the E-shaped driving frame 3 to slide oppositely, the upper turning plate 4 and the lower turning plate 4 are synchronously turned and opened and closed, the two driving rods 501 can be oppositely and slidably arranged on the outer sides of the two driven gears 401 along the cross support shaft at the top end of the T-shaped driving frame 5, and two rows of tooth grooves on the inner sides of the driving rods are in meshing contact transmission with the two driven gears 401 (as shown in figure 6), so that the use state that the upper turning plate 4 and the lower turning plate 4 are synchronously rotated and opened and closed can be switched into the use state that the upper turning plate and the lower turning plate are alternately opened and closed oppositely. And two actuating levers 501 are inserted and positioned through two plum blossom bolts, only need loosen two plum blossom bolts it just can be around the rotation of stull axostylus axostyle downward sloping, this can misplace with two driven gear 401, avoid two driven gear 401 to cause the regulation of slipping outward of two actuating levers 501 to block. The springs on the two swing plates 702 can pull and keep the two transverse beam plates 7 in the horizontally supported leaning and leaning state, the two transverse beam plates 7 can be rotatably arranged in a sagging state when the turnover valve is in an open state, the middle channel of the two prescription pipe shells 1 is completely emptied, the two transverse beam plates 7 are prevented from being statically arranged in the transverse beam state for a long time to intercept and block the sucked materials in the channel, and the two groups of turning plates 4 can be linked to drive the two transverse beam plates 7 to swing and arrange in the sagging state when being opened in a rotary mode through the power transmission of the two rectangular transmission frames 6. And the lower half section of the right vertical support supporting rod of the two rectangular transmission frames 6 is of a polished rod structure, so that when the two groups of turning plates 4 rotate to a half stroke, the two transverse beam blocking plates 7 are engaged to drive the turning plates to swing downwards, the two groups of turning plates 4 and the two transverse beam blocking plates 7 synchronously rotate to swing downwards to cause mutual blocking interference, and the two transverse beam blocking plates 7 can rotate to be combined with the four top leaning rods 102 in a clamping manner to form two horizontal leaning support surrounding frames. And when the turning plate 4 is closed, the turning plate rotates to abut against the bottom sealing surface of the enclosure frame horizontally abutted by the two parts, and the clamping grooves on the top leaning rod 102 and the two transverse beam blocking plates 7 can keep the bottom surfaces of the top leaning rod 102 and the two transverse beam blocking plates 7 to be flat and smooth when the top leaning rod 102 and the two transverse beam blocking plates 7 are clamped and combined without bulges, so that the sealing performance of the turning plate 4 when the turning plate is closed is ensured. Through the power transmission of two rectangle transmission frames 6, two sets of boards 4 about can link when the gyration is opened and order about two department's crosspiece roof beam boards 7 and swing and arrange in the flagging state, this saves the trouble that artifical power of exerting oneself swung down and changes and fix a position two department's crosspiece roof beam boards 7, and this has simplified the use operating procedure of upset valve, labour saving and time saving.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a double-deck two electronic flap valve which characterized in that:

the square tube shell comprises a square tube shell (1), wherein the square tube shell (1) comprises a square mounting cover (101), a top leaning rod (102), a long rectangular cover (103) and a hexagonal positioning shaft (104), the upper square tube shell and the lower square tube shell (1) are symmetrically locked together to form a main body supporting frame of the flap valve, the left side wall and the right side wall of each square tube shell (1) are symmetrically and convexly welded with two square mounting covers (101), and the outer openings of the two square mounting covers (101) are locked and plugged with cover plates; the middle positions of the rear side walls of the two square tube shells (1) are respectively welded with a long rectangular cover (103) in a convex mode, a transverse beam baffle plate (7) is respectively arranged in the two long rectangular covers (103) in a rotating and inserting mode, and two turning plates (4) are respectively arranged in each square mounting cover of the two square mounting covers (101) in a rotating and inserting mode; two top leaning rods (102) are symmetrically welded on the left inner wall and the right inner wall of the two square tube shells (1), a T-shaped driving frame (5) is slidably inserted on the upper surface of the front side walls of the two square tube shells (1), and a Chinese character 'shan' shaped driving frame (3) is slidably inserted on the lower surface of the front side walls of the two square tube shells; two hexagonal positioning shafts (104) are symmetrically welded at the left positions of the rear side walls of the two square pipe shells (1), a rectangular transmission frame (6) is sleeved and slidably mounted on the two hexagonal positioning shafts (104), and an oil cylinder (2) is locked and fixed on the front side wall of the locking and butting position of the two square pipe shells (1).

2. The double-layer double-door electric flap valve according to claim 1, characterized in that:

the oil cylinder (2) comprises a connecting rod (201), the front end of a piston rod of the oil cylinder (2) is symmetrically and rotatably connected with two connecting rods (201), and the tail ends of the two connecting rods (201) are correspondingly and rotatably connected with the T-shaped driving frame (5) and a vertical support sliding rod in the middle of the V-shaped driving frame (3).

3. The double-layer double-door electric flap valve according to claim 1, characterized in that:

the four turning plates (4) are symmetrically installed in an up-down overturning mode, the back parts of the four turning plates (4) are welded with a rotating rod, the front ends of the rotating rods are sleeved with driven gears (401), and the rear end sections of the two rotating rods on the left side are also sleeved with the driven gears (401).

4. The double-layer double-door electric flap valve according to claim 1, characterized in that:

two vertical driving rods (501) are symmetrically sleeved and slidably mounted on a cross-brace shaft lever at the top end of the T-shaped driving frame (5).

5. The double-layer double-door electric flap valve according to claim 4, characterized in that:

a plum bolt is locked on the sliding sleeves at the bottoms of the two driving rods (501) in a penetrating manner, and a row of tooth sockets are formed in two sides of each driving rod (501).

6. The double-layer double-door electric flap valve according to claim 1, characterized in that:

the left and right parts of the E-shaped driving frame (3) are respectively provided with vertical supporting rack rods, the left and right parts of the E-shaped driving frame (3) are correspondingly in meshed contact with two driven gears (401) on the front side of the bottom, and two driving rods (501) are correspondingly in meshed contact with two driven gears (401) on the front side of the top.

7. The double-layer double-door electric flap valve according to claim 1, characterized in that:

the tail ends of the two transverse beam baffles (7) are welded and fixed with a rotating shaft (701), and the left ends of the two rotating shafts (701) are sleeved with a small gear.

8. The double-layer double-door electric flap valve according to claim 7, characterized in that:

two swinging plates (702) are welded at the right ends of the two rotating shafts (701), and two tension springs are rotatably supported and hung between the two swinging plates (702) and the rear side walls of the two prescription pipe shells (1).

9. The double-layer double-door electric flap valve according to claim 8, characterized in that:

the two rectangular transmission frames (6) are respectively provided with a left vertical support rod and a right left vertical support rod, the outer end faces of the left vertical support rods of the two rectangular transmission frames (6) are provided with a row of tooth grooves, the two rows of tooth grooves are correspondingly in meshing contact with two driven gears (401) on the rear side, the inner sides of the upper half sections of the right vertical support rods of the two rectangular transmission frames (6) are respectively provided with a row of tooth sheets, and the two rows of tooth sheets are correspondingly in meshing contact with pinions at the left ends of the two rotating shafts (701).

10. The double-layer double-door electric flap valve according to claim 1, characterized in that:

all seted up a draw-in groove on the interlude of top leaning on pole (102), and all seted up a draw-in groove on the head and the tail both ends section of two crosspiece board (7), through these draw-in grooves, two crosspiece board (7) are rotatable to be in the same place and form two levels to lean on and enclose the frame with four top leaning on pole (102) joint, just rotate when turning over board (4) and close and lean on here two levels to lean on and enclose on the sealed face of bottom of frame.