CN211423402U - Combined sealing valve - Google Patents

Abstract

The utility model discloses a combination seal valve includes the valve body, it has the open last valve pocket in top and bottom to inject in the last valve body, it unloads grey board to go up to be equipped with in the valve pocket, go up the bottom of valve body and connect down the valve body, inject the open lower valve pocket in top and bottom in the lower valve body, the bottom of valve pocket is gone up in the top intercommunication of lower valve pocket, it unloads grey board down to be equipped with down in the lower valve pocket, the bottom of lower valve body is equipped with the seal valve, the seal valve includes the closing plate and connects the closing plate and drive the closing plate driving piece that the closing plate removed between open position and closed position, the bottom of opening the valve pocket opens the mouth down when the closing plate is located open position, the bottom that closes. The upper ash discharging turning plate, the lower ash discharging turning plate and the sealing valve work independently, so that not only can the mutual influence between different operating mechanisms be prevented, but also the operability of the combined ash discharging valve can be improved, and the sealing performance of the combined ash discharging valve in the dust discharging process can be improved.

Description

Combined sealing valve

Technical Field

The utility model belongs to the technical field of the unloading valve, specifically, relate to a combination seal valve.

Background

In the sintering field of the association industry, the dust discharging valve is widely applied to a large flue of a sintering machine and a dust removing system, when the dust discharging valve works, because the gas pressure difference exists between the inside and the outside, when the internal materials are emptied, the internal environment of the equipment is required to be ensured not to be communicated with the atmosphere, so that the whole discharging process is ensured to be carried out in a closed state, most of the prior sintering plants adopt mushroom head type or flap type double-layer dust discharging valves, most of the prior sintering plants adopt rigid sealing, the structure is simple and the sealing effect is poor, some sealing modes of increasing rubber rings or air bags are adopted, although the sealing effect is improved, the structure is complex, in practical application, the dust under a dust storage tank can be remained on the contact surface of a valve cabin and a valve body, the dust discharging valve can not be completely sealed, particularly, when the dust has certain humidity, the dust can be bonded on the mushroom head or flap surface, the gap is larger, and the, in addition, the valve is easy to wear after being washed by high wind pressure for a long time, and air leakage is increased. This not only destroys the load environment of the equipment, causes a large amount of leakage, causes energy waste and equipment loss, also increases the push-and-protect cost. The split-phase sealed valve structure of the patent (108644428A) can solve the problems, but the valve is higher in height and the application is limited by the field space.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a combined sealing valve,

the combined sealing valve comprises an upper valve body, an upper valve cavity with an open top and an open bottom is defined in the upper valve body, an upper ash discharging turning plate is arranged in the upper valve cavity, the upper ash discharging turning plate can be turned over and connected to the inner peripheral wall of the upper valve body in a low-position mode between a first position and a second position, the top of the upper valve cavity is sealed when the upper ash discharging turning plate is located at the first position, and the top of the upper valve cavity is opened when the upper ash discharging turning plate is located at the second position; the bottom of the upper valve body is connected with a lower valve body, a lower valve cavity with an open top and an open bottom is defined in the lower valve body, the top of the lower valve cavity is communicated with the bottom of the upper valve cavity, a lower ash discharging turning plate is arranged in the lower valve cavity, the lower ash discharging turning plate can be turned over and connected to the inner peripheral wall of the lower valve body between a third position and a fourth position, the top of the lower valve cavity is closed when the lower ash discharging turning plate is located at the third position, and the top of the lower valve cavity is opened when the lower ash discharging turning plate is located at the fourth position; the bottom of lower valve body is equipped with the seal valve, the seal valve includes the closing plate and connects the closing plate and drives the closing plate is at the driving piece that open position and closed position removed, works as the closing plate is located open when the open position the bottom of valve pocket is opened, works as the closing plate is located close when the closed position the bottom of valve pocket is opened.

According to an embodiment of the present invention, a first sealing member is disposed between the upper valve body and the lower valve body, and the first sealing member is disposed around the bottom opening of the upper valve chamber; and a second sealing element is arranged between the lower valve body and the sealing valve and surrounds the bottom opening of the lower valve cavity.

According to the utility model discloses an embodiment, go up the valve body and still include: the upper ash discharging valve comprises an upper ash discharging valve inner sleeve which extends in the vertical direction and is communicated in the vertical direction, the upper ash discharging valve inner sleeve is connected to the top of the upper valve cavity, the outer peripheral wall of the upper ash discharging valve inner sleeve is in sealing fit with the inner peripheral wall of the upper valve body, and the upper ash discharging turning plate is matched with the lower end of the upper ash discharging valve inner sleeve to open or close the top open opening of the upper valve cavity.

According to the utility model discloses an embodiment, the lower terminal surface of going up the ash discharge valve endotheca forms the plane that sets up with the horizontal direction slope, the contained angle between the lower terminal surface of going up the ash discharge valve endotheca and the horizontal plane is A, wherein, 15 is ≦ A ≦ 30.

According to the utility model discloses an embodiment, it includes to go up the ash unloading board that turns over: the rotary shaft is rotatably connected to the inner peripheral wall of the upper valve body, one end of the pivoting arm is connected with the rotary shaft and pivots relative to the rotary shaft, the sealing turning plate is connected to the pivoting arm and rotates along with the pivoting arm, and the sealing turning plate is matched with the lower end face of the inner sleeve of the upper ash discharge valve to open or close the lower end face of the inner sleeve of the upper ash discharge valve.

According to the utility model discloses an embodiment, the one end of axis of rotation is run through go up the lateral wall of valve body and stretch out the valve pocket, the axis of rotation stretches out the one end of going up the valve pocket is equipped with twist grip and is used for control it turns over the board rotation to unload the ash on.

According to the utility model discloses an embodiment, the one end of axis of rotation is run through go up the lateral wall of valve body and stretch out the valve pocket, the axis of rotation stretches out driving motor is connected to the one end of going up the valve pocket, driving motor control it turns over the board rotation to go up to unload the ash.

According to the utility model discloses an embodiment, the closing plate with open mouthful parallel arrangement in the bottom of lower valve pocket, the driving piece forms to drive actuating cylinder or actuating cylinder.

According to the utility model discloses an embodiment still includes: the pressing mechanism is arranged below the sealing plate and is movably connected to the sealing valve between a pressing position and a releasing position in a direction perpendicular to the sealing plate, when the pressing mechanism is located at the pressing position, the pressing mechanism extrudes the sealing plate to move upwards and be in sealing butt joint with the bottom of the lower valve body, and when the pressing mechanism is located at the releasing position, the pressing effect on the sealing plate is relieved.

The beneficial technical effect of this application: according to the combined sealing valve provided by the embodiment of the utility model, in the working process, the upper ash discharging turning plate rotates to the second position to open the top of the upper valve cavity, dust falls into the upper valve cavity, and after the dust in the upper valve cavity is discharged, the upper ash discharging turning plate rotates to the first position to close the top of the upper valve cavity; and then the lower ash discharging turning plate is rotated to a fourth position to open the top of the lower valve cavity, the dust in the upper valve cavity falls into the lower valve cavity, after the dust in the lower valve cavity is discharged, the lower ash discharging turning plate is rotated to a third position to close the top of the lower valve cavity, then the valve is sealed, and the dust in the lower valve cavity is discharged into a dust collecting tank or a collecting chain below the sealing valve. The upper valve body, the lower valve body and the sealing valve are matched, so that dust can be discharged from top to bottom in sequence, and the upper dust discharging turning plate, the lower dust discharging turning plate and the sealing valve work independently, so that not only can the mutual influence among different operating mechanisms be prevented, but also the operability of the combined sealing valve can be improved; moreover, the upper valve body, the lower valve body and the sealing valve are not opened simultaneously, so that dust can be discharged, and the sealing performance of the combined sealing valve in the dust discharging process can be improved.

Drawings

Fig. 1 is a schematic structural view of a combined sealing valve according to an embodiment of the present invention;

fig. 2 is a schematic view of the sealing valve and the pressing mechanism according to the embodiment of the present invention.

Reference numerals:

100: a combined sealing valve;

10: an upper valve body; 11: an ash discharging turning plate is arranged; 12: an inner sleeve of the ash discharge valve is arranged; 13: a rotating shaft; 14: a pivoting arm;

15: sealing the turning plate; 16: annular flanging; 17: a vertical sleeve; 18: a first flanging;

20: a lower valve body; 21: a lower ash discharging turning plate; 22: an inner sleeve of the ash discharging valve is arranged;

23: second flanging; 24: a second seal member;

30: a sealing valve; 31: a sealing plate; 32: a drive member; 33: sealing the valve body;

40: a hold-down mechanism; 41: a rocker arm; 42: and a linkage lug.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A combined sealing valve 100 according to an embodiment of the present invention is described below with reference to fig. 1 and 2.

As shown in fig. 1, a combined sealing valve 100 according to an embodiment of the present invention includes an upper valve body 10, an upper valve cavity with an open top and an open bottom is defined in the upper valve body 10, an upper ash discharging turning plate 11 is disposed in the upper valve cavity, the upper ash discharging turning plate 11 is connected to the inner peripheral wall of the upper valve body 10 in a reversible manner between a first position and a second position, the top of the upper valve cavity is closed when the upper ash discharging turning plate 11 is located at the first position, and the top of the upper valve cavity is opened when the upper ash discharging turning plate 11 is located at the second position.

The bottom of the upper valve body 10 is connected with a lower valve body 20, a lower valve cavity with opened top and bottom is defined in the lower valve body 20, the top of the lower valve cavity is communicated with the bottom of the upper valve cavity, a lower ash discharging turning plate 21 is arranged in the lower valve cavity, the lower ash discharging turning plate 21 can be turned over and connected with the inner peripheral wall of the lower valve body 20 in a low mode between a third position and a fourth position, the top of the lower valve cavity is sealed when the lower ash discharging turning plate 21 is located at the third position, and the top of the lower valve cavity is opened when the lower ash discharging turning plate 21 is located at the fourth.

As shown in fig. 2, a sealing valve 30 is disposed at the bottom of the lower valve body 20, the sealing valve 30 includes a sealing valve body 33, a sealing plate 31, and a driving member 32 connected to the sealing plate 31 and driving the sealing plate 31 to move between an open position and a closed position, the driving member 32 is connected to the sealing valve body 33, a discharge opening is formed at a position of the sealing valve body 33 corresponding to the bottom opening of the lower valve cavity, the bottom opening and the discharge opening of the lower valve cavity are opened when the sealing plate 31 is located at the open position, and the sealing plate 31 is located between the bottom opening of the lower valve cavity and the discharge opening of the sealing valve body 33 and closes the bottom opening and the discharge opening of the lower valve cavity when the sealing plate 31 is.

The upper ash discharging turning plate 11 rotates to a second position to open the top of the upper valve cavity, dust falls into the upper valve cavity, and the upper ash discharging turning plate 11 rotates to a first position to close the top of the upper valve cavity after the dust in the upper valve cavity is discharged; then, the lower dust discharging turning plate 21 is rotated to a fourth position to open the top of the lower valve cavity, dust in the upper valve cavity falls into the lower valve cavity, after the dust in the lower valve cavity is discharged, the lower dust discharging turning plate 21 is rotated to a third position to close the top of the lower valve cavity, then the valve 30 is sealed, and the dust in the lower valve cavity is discharged into a dust collecting tank or a collecting chain below the sealing valve 30.

According to the combined sealing valve 100 of the embodiment of the present invention, the upper valve body 10, the lower valve body 20 and the sealing valve 30 are matched, so that dust can be discharged from top to bottom in sequence, and the upper dust discharging turning plate 11, the lower dust discharging turning plate 21 and the sealing valve 30 work independently, so that not only can the occurrence of mutual influence among different operating mechanisms be prevented, but also the operability of the combined sealing valve 100 can be improved; moreover, the upper valve body 10, the lower valve body 20 and the sealing valve 30 are not opened at the same time, which not only can realize the dust discharge, but also can improve the sealing performance and safety of the combined sealing valve 100 in the dust discharge process.

According to an embodiment of the present invention, a first sealing member is disposed between the upper valve body 10 and the lower valve body 20, the first sealing member is disposed around the bottom opening of the upper valve chamber, a second sealing member 24 is disposed between the lower valve body 20 and the sealing valve 30, and the second sealing member 24 is disposed around the bottom opening of the lower valve chamber.

The bottom of the upper valve body 10 is provided with a first flanging 18 surrounding the bottom open mouth of the upper valve cavity, the top of the lower valve body 20 is provided with a second flanging 23 surrounding the top open mouth of the lower valve cavity, the first flanging 18 and the second flanging 23 are in the same structure and are arranged in parallel, the first flanging 18 and the second flanging 23 are connected through bolts, and the first sealing element is clamped between the first flanging 18 and the second flanging 23.

The lower valve body 20 has a sealing groove formed in the bottom thereof and surrounding the bottom opening of the lower valve chamber, the second sealing member 24 is disposed in the sealing groove, the lower valve body 20 is bolted to the sealing valve body 33, and the lower surface of the second sealing member 24 is in sealing abutment against the upper surface of the sealing plate 31 when the sealing plate 31 is in the closed position.

By providing the first sealing member and the second sealing member 24, the sealing effect between the upper valve body 10 and the lower valve body 20 and the sealing effect of the sealing valve 30 for sealing the lower valve cavity can be improved, dust can be prevented from leaking through the gap between the upper valve body 10 and the lower valve body 20 or the gap between the lower valve body 20 and the sealing plate 31, and the sealing members are simple in structure, easy to obtain and low in production cost.

According to the utility model discloses an embodiment, go up valve body 10 and still include: the upper ash discharging valve inner sleeve 12 extends along the vertical direction and penetrates through the vertical direction, the upper ash discharging valve inner sleeve 12 is connected to the top of the upper valve cavity, the outer peripheral wall of the upper ash discharging valve inner sleeve 12 is in sealing fit with the inner peripheral wall of the upper valve body 10, and the upper ash discharging turning plate 11 is matched with the lower end of the upper ash discharging valve inner sleeve 12 to open or close the top opening of the upper valve cavity.

Similarly, the lower valve body 20 further includes: the lower ash discharging valve inner sleeve 22 extends along the vertical direction and penetrates along the vertical direction, the lower ash discharging valve inner sleeve 22 is connected to the top of the lower valve cavity, the outer peripheral wall of the lower ash discharging valve inner sleeve 22 is in sealing fit with the inner peripheral wall of the lower valve body 20, and the lower ash discharging turning plate 21 is matched with the lower end of the lower ash discharging valve inner sleeve 22 to open or close the top opening of the lower valve cavity.

The upper dust discharging valve inner sleeve 12 and the lower dust discharging valve inner sleeve 22 respectively comprise an annular flanging 16 and a vertical sleeve, the annular flanging 16 of the upper dust discharging valve inner sleeve 12 is overlapped with the upper end face of the upper valve body 10, the annular flanging 16 of the lower dust discharging valve inner sleeve 22 is clamped between a first flanging 18 and a second flanging 23, the upper end of the vertical sleeve is connected with the inner peripheral edge of the annular flanging 16, the diameter of the vertical sleeve is the same as the inner diameter of the annular flanging 16, and dust enters the upper valve cavity or the lower valve cavity through the vertical sleeve.

The upper ash discharging turning plate 11 is matched with the lower end of the vertical sleeve 17 of the upper ash discharging valve inner sleeve 12 to open or close the top open opening of the lower valve cavity, and the upper ash discharging turning plate 11 is matched with the lower end of the vertical sleeve 17 of the upper ash discharging valve inner sleeve 12 to open or close the top open opening of the lower valve cavity. The upper ash discharge flap 11 and the lower ash discharge flap 21 can be opened or closed conveniently by arranging the upper ash discharge valve inner sleeve 12 and the lower ash discharge valve inner sleeve 22, and the tightness of the upper valve body 10 and the lower valve body 20 when closed can be improved.

As shown in the figure, in the embodiment, the lower end surface of the inner sleeve 12 of the upper ash discharge valve is formed into a plane which is obliquely arranged with the horizontal direction, the included angle between the lower end surface of the inner sleeve 12 of the upper ash discharge valve and the horizontal plane is A, wherein, A is more than or equal to 15 degrees and less than or equal to 30 degrees,

that is to say, the lower end face of the vertical sleeve 17 is formed into an inclined plane structure, the included angle between the lower end face of the vertical sleeve 17 and the horizontal plane is 15-30 degrees, and the lower end face of the vertical sleeve 17 which is designed in an inclined manner can reduce the rotation angle of the upper ash-discharging turning plate 11 and the lower ash-discharging turning plate 21 in the rotation process, so that convenience is provided for opening or closing the upper valve cavity of the upper ash-discharging turning plate 11, and convenience is provided for opening or closing the lower valve cavity of the lower ash-discharging turning plate 21.

According to the utility model discloses an embodiment, it includes to go up ash-discharging turning plate 11: the rotary shaft 13 is rotatably connected to the inner peripheral wall of the upper valve body 10, one end of the rotary shaft 13 penetrates through the side wall of the upper valve body 10 and extends out of the upper valve cavity, a rotary handle can be arranged at one end of the rotary shaft 13 extending out of the upper valve cavity, a worker can control the rotary shaft 13 to rotate through the rotary handle, and one end of the rotary shaft 13 extending out of the upper valve cavity can also be connected with a driving motor to control the rotary shaft 13 to rotate.

One end of a pivoting arm 14 is connected with the rotating shaft 13 and pivots relative to the rotating shaft 13, a sealing turning plate 15 is connected to the pivoting arm 14 and rotates along with the pivoting arm 14, and the sealing turning plate 15 is matched with the lower end surface of the inner sleeve 12 of the upper ash discharge valve to open or close the lower end surface of the inner sleeve 12 of the upper ash discharge valve.

In the process that a worker drives the rotating shaft 13 to rotate through a rotating handle or a driving motor, the pivoting arm 14 drives the sealing turning plate 15 to rotate together, and then the sealing turning plate 15 is driven to open or close the lower end of the vertical sleeve 17.

Wherein, the structure of the lower ash-discharging turning plate 21 is similar to that of the upper ash-discharging turning plate 11, and comprises: the rotating shaft 13 is rotatably connected to the inner peripheral wall of the lower valve body 20, one end of the rotating shaft 13 penetrates through the side wall of the lower valve body 20 and extends out of the lower valve cavity, a rotating handle can be arranged at one end of the rotating shaft 13 extending out of the lower valve cavity, a worker can control the rotating shaft 13 to rotate through the rotating handle, and one end of the rotating shaft 13 extending out of the upper valve cavity can also be connected with a driving motor to control the rotating shaft 13 to rotate. One end of the pivoting arm 14 is connected with the rotating shaft 13 and pivots relative to the rotating shaft 13, the sealing turning plate 15 is connected to the pivoting arm 14 and rotates along with the pivoting arm 14, and the sealing turning plate 15 is matched with the lower end face of the inner sleeve 22 of the ash discharge valve to open or close the lower end face of the inner sleeve 22 of the ash discharge valve.

The upper ash discharging turning plate 11 and the lower ash discharging turning plate 21 with the above structure have simple structure, are easy to realize, are convenient to operate, can improve the tightness of the upper valve body 10 and the lower valve body 20, and can provide convenience for workers to operate the combined sealing valve 100.

According to the utility model discloses an embodiment, the bottom of closing plate 31 and lower valve pocket opens the mouth parallel arrangement, opens the parallel closing plate 31 of mouth through the bottom that sets up and lower valve pocket, can promote closing plate 31 and lower valve pocket bottom and open the mouth cooperation effect and cooperation stability, prevents to produce between closing plate 31 and the lower valve body 20 and has the sealed effect that the clearance influences sealing valve 30.

The driving member 32 is formed as a driving cylinder or a driving cylinder, and the sealing plate 31 is driven to move by the driving cylinder or the driving cylinder, so that the degree of automation of the combined sealing valve 100 can be improved, the labor intensity of workers can be reduced, the moving stroke of the driving cylinder and the driving cylinder is large, and the requirement of the movement of the sealing plate 31 can be met.

According to an embodiment of the present invention, a combined sealing valve 100 further comprises: and the pressing mechanism 40 is arranged below the sealing plate 31, the pressing mechanism 40 is movably connected to the sealing valve 30 between a pressing position and a releasing position in a direction perpendicular to the sealing plate 31, when the pressing mechanism 40 is in the pressing position, the pressing mechanism 40 presses the sealing plate 31 to move upwards to be in sealing contact with the bottom of the lower valve body 20, and when the pressing mechanism 40 is in the releasing position, the pressing action on the sealing plate 31 is released.

The hold-down mechanism 40 is connected on the sealed valve body 33 through the rocking arm 41, the sealed valve body 33 is connected to the lower extreme of rocking arm 41, the upper end of rocking arm 41 inclines towards the driving piece 32 and is connected hold-down mechanism 40, be equipped with linkage lug 42 on the hold-down mechanism 40, when the driving piece 32 promoted the closing plate 31 and moves, closing plate 31 butt linkage lug 42 drives hold-down mechanism 40 and moves towards the direction of keeping away from the driving piece 32, when the upper end of rocking arm 41 rotated towards the direction of keeping away from between the drive, promote hold-down mechanism 40 and upwards move, and then can compress tightly the closing plate 31 on the bottom.

Other constructions and operations of a combined sealing valve 100 according to an embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A combined sealing valve (100) comprises an upper valve body (10), and is characterized in that an upper valve cavity with an open top and an open bottom is defined in the upper valve body (10), an upper ash discharging turning plate (11) is arranged in the upper valve cavity, the upper ash discharging turning plate (11) can be connected to the inner peripheral wall of the upper valve body (10) in a turning and low mode between a first position and a second position, the top of the upper valve cavity is closed when the upper ash discharging turning plate (11) is located at the first position, and the top of the upper valve cavity is opened when the upper ash discharging turning plate (11) is located at the second position;

the bottom of the upper valve body (10) is connected with a lower valve body (20), a lower valve cavity with an open top and an open bottom is defined in the lower valve body (20), the top of the lower valve cavity is communicated with the bottom of the upper valve cavity, a lower ash discharging turning plate (21) is arranged in the lower valve cavity, the lower ash discharging turning plate (21) can be turned over and connected to the inner peripheral wall of the lower valve body (20) in a low mode between a third position and a fourth position, the top of the lower valve cavity is sealed when the lower ash discharging turning plate (21) is located at the third position, and the top of the lower valve cavity is opened when the lower ash discharging turning plate (21) is located at the fourth position;

the bottom of lower valve body (20) is equipped with sealing valve (30), sealing valve (30) include closing plate (31) and connect closing plate (31) and drive driving piece (32) that closing plate (31) removed between open position and closed position work as closing plate (31) are located open the bottom of valve pocket is spacious open down when open position, work as closing plate (31) are located close when closed the bottom of valve pocket is spacious open.

2. A combined sealing valve (100) according to claim 1, characterized in that a first seal is provided between said upper valve body (10) and said lower valve body (20), said first seal being provided around the bottom open mouth of said upper valve chamber;

a second sealing piece (24) is arranged between the lower valve body (20) and the sealing valve (30), and the second sealing piece (24) is arranged around the bottom opening of the lower valve cavity.

3. A combined sealing valve (100) according to claim 2, characterized in that said upper valve body (10) further comprises: the upper ash discharging valve comprises an upper ash discharging valve inner sleeve (12) which extends in the vertical direction and is communicated in the vertical direction, the upper ash discharging valve inner sleeve (12) is connected to the top of the upper valve cavity, the outer peripheral wall of the upper ash discharging valve inner sleeve (12) is in sealing fit with the inner peripheral wall of the upper valve body (10), and an upper ash discharging turning plate (11) is matched with the lower end of the upper ash discharging valve inner sleeve (12) to open or close the top opening of the upper valve cavity.

4. A combined sealing valve (100) according to claim 3, characterized in that the lower end face of said inner sleeve (12) of said upper ash discharge valve is formed as a plane arranged obliquely to the horizontal, the angle between the lower end face of said inner sleeve (12) of said upper ash discharge valve and the horizontal is a, wherein a is more than or equal to 15 ° and less than or equal to 30 °.

5. Combined sealing valve (100) according to claim 4, characterized in that said upper ash discharge flap (11) comprises:

the rotating shaft (13), the said rotating shaft (13) is connected to the inner peripheral wall of the said upper valve block (10) rotatably;

a pivoting arm (14), one end of the pivoting arm (14) is connected with the rotating shaft (13) and pivots relative to the rotating shaft (13);

the sealing turnover plate (15) is connected to the pivoting arm (14) and rotates along with the pivoting arm (14), and the sealing turnover plate (15) is matched with the lower end face of the upper ash discharge valve inner sleeve (12) to open or close the lower end face of the upper ash discharge valve inner sleeve (12).

6. A combined sealing valve (100) according to claim 5, characterized in that one end of said rotating shaft (13) extends through the side wall of said upper valve body (10) and out of the upper valve chamber, and the end of said rotating shaft (13) extending out of said upper valve chamber is provided with a rotating handle for controlling the rotation of said upper ash discharge flap (11).

7. A combined sealing valve (100) according to claim 5, characterized in that one end of said rotating shaft (13) penetrates through the side wall of said upper valve body (10) and protrudes out of the upper valve chamber, and one end of said rotating shaft (13) protruding out of said upper valve chamber is connected to a driving motor, said driving motor controlling the rotation of said upper ash discharge flap (11).

8. A combined sealing valve (100) according to claim 1, characterized in that said sealing plate (31) is arranged in parallel with the bottom open mouth of said lower valve chamber, said actuating member (32) being formed as a drive cylinder or a drive cylinder.

9. A combined sealing valve (100) according to claim 1, further comprising: the pressing mechanism (40), the pressing mechanism (40) is established below the sealing plate (31), in the direction perpendicular to the sealing plate (31), the pressing mechanism (40) is movably connected between a pressing position and a releasing position on the sealing valve (30), when the pressing mechanism (40) is in the pressing position, the pressing mechanism (40) extrudes the sealing plate (31) to move upwards to seal and abut against the bottom of the lower valve body (20), and when the pressing mechanism (40) is in the releasing position, the pressing effect on the sealing plate (31) is relieved.

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