A new type of special sealing device for ash discharge valve

Abstract

The present invention provides a new type of special sealing device for ash unloading valve, comprising a shell, a rotating shaft, an offset detection mechanism, a flange and a loose alarm mechanism, wherein the offset detection mechanism comprises a clamping plate, a push rod, a slide groove, a slider, a return spring, a cam and a rotating shaft, and the loose alarm mechanism comprises a battery, a connecting rod, an iron sheet, a fixing bolt, a groove, an electric cylinder, an arc plate and an alarm. Compared with the prior art, the present invention has the following beneficial effects: the sealing performance is improved, the leakage of materials is prevented, the purpose of rotating shaft offset detection is achieved, the purpose of fixing bolt loosening alarm is achieved, and the purpose of locking is achieved.

Description

Technical Field

[0001] The invention discloses a novel sealing device specially used for an ash discharge valve, belonging to the technical field of ash discharge valves. Background Art

[0002] The ash discharge valve, also known as the electric ash discharge valve, is the main equipment for dust removal equipment to discharge ash, supply air and feed other equipment. It is suitable for powdery and granular materials and is widely used in environmental protection, metallurgy, chemical industry, grain, food and other industrial sectors.

[0003] In the prior art, the special sealing device for ash unloading valves still has many shortcomings. The sealing performance of the sealing part of the rotating shaft end of the equipment for conveying ash powder and other tiny particles is poor, which may easily lead to material leakage. At the same time, the lack of offset detection function causes eccentric movement of the transmission shaft, which reduces the service life. In addition, the lack of loosening alarm mechanism generates vibration when the ash unloading valve is working, which may easily lead to loosening of the fixing bolts, causing the outer shell to fall off and reducing the sealing performance. Therefore, a new special sealing device for ash unloading valves is needed to solve the above problems. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a new type of special sealing device for ash unloading valve to solve the problems raised in the above background technology. The present invention is easy to use, can detect whether the rotating shaft is offset, alarm when loose, lock in time, and has good safety and high reliability.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a new type of special sealing device for ash unloading valve, including a shell, a rotating shaft, an offset detection mechanism, a flange and a loose alarm mechanism, the shell is assembled on the annular side of the rotating shaft, the right end of the flange is installed on the left end face of the shell, and the flange is installed on the annular side of the rotating shaft, the offset detection mechanism is installed on the right end face of the shell, the loose alarm mechanism is installed on the right end face of the flange, and the loose alarm mechanism is arranged on the outside of the shell, the offset detection mechanism includes a splint, a push rod, a slide groove, a slider, a return spring, a cam and a rotating shaft, and the loose alarm mechanism includes a battery, a connecting rod, an iron sheet, a fixing bolt, a groove, an electric cylinder, an arc plate and an alarm.

[0006] Furthermore, a sintered graphite ring, aramid packing and mixed mud filler are provided inside the shell, the aramid packing is assembled on the inner end face of the sintered graphite ring, and the mixed mud filler is placed on the inner end face of the aramid packing. A through hole is opened on the right end face of the shell, and a rotating shaft is installed in the through hole. When the ash discharge valve is working, the aramid packing and the sintered graphite ring are filled at both ends of the inner cavity of the shell and are stationary, which is equivalent to the static ring of the mechanical seal. The mixed mud filler rotates with the rotating shaft, which is equivalent to the dynamic ring of the mechanical seal. When working, the rotating shaft drives the mixed mud filler to rotate together, and forms a relative rotation with the aramid packing and the sintered graphite ring, forming a relative friction pair, achieving a sealing effect, ensuring zero leakage, achieving the purpose of sealing, and preventing material leakage.

[0007] Furthermore, a feeding port is processed on the upper side of the annular side of the shell, a bent pipe is installed on the upper end face of the feeding port, a storage barrel is assembled on the right end of the bent pipe, and a stop valve is assembled on the upper side of the annular side of the bent pipe, an electric rod is installed on the right wall inside the storage barrel, and a piston is assembled on the left end of the electric rod. By opening the stop valve and then starting the electric rod, the electric rod drives the piston to move to the left along the inner wall of the storage barrel, thereby pushing the muddy filler into the bent pipe, and then the muddy filler moves along the bent pipe to the feeding port and enters the shell through the feeding port. Through the above steps, the purpose of automatic filling is achieved and the sealing effect is guaranteed.

[0008] Further, in the offset detection mechanism, the clamping plate is assembled on the outside of the rotating shaft, the push rod is fixed on the outer end of the clamping plate, the slide groove is opened on the right end surface of the shell, the slider is assembled in the slide groove, and the push rod is installed on the right end of the slider, the return spring is assembled on the outer end of the slider, and the return spring is installed inside the slide groove, the cam is arranged on the right end surface of the shell, the rotating shaft is assembled on the right end surface of the shell, and the cam is installed on the left side of the annular side surface of the rotating shaft.

[0009] Furthermore, the offset detection mechanism also includes a pointer, a protractor and a handwheel, the pointer is fixed at the outer end of the cam, the protractor is installed on the right end face of the shell, and the pointer is set on the right end face of the protractor, and the handwheel is installed at the right end of the rotating shaft. By rotating the handwheel, the rotation of the handwheel drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the cam to rotate, and then the cam drives the pointer to rotate around the protractor, and at the same time, the rotation of the cam drives the push rod to move downward, and then the push rod drives the slider to move downward along the slide groove, the downward movement of the slider forces the return spring to stretch, and at the same time, the downward movement of the push rod drives the splint to move downward. When both sets of splints are in contact with the annular side of the rotating shaft, the staff stops rotating the handwheel and observes the reading of the pointer on the protractor. When the two sets of readings are different, it indicates that the installation of the rotating shaft is offset, thereby achieving the purpose of detecting whether the installation position of the rotating shaft is offset or not, and ensuring the accuracy of the installation of the rotating shaft.

[0010] Furthermore, the offset detection mechanism is provided with two groups, the two groups of the offset detection mechanism have the same structure, and the two groups of the offset detection mechanism are symmetrically installed on the right end surface of the shell. By having the two groups of the offset detection mechanism work at the same time, the purpose of calculating the offset difference is achieved, which facilitates the judgment of the offset direction of the rotating axis.

[0011] Furthermore, in the loose alarm mechanism, the battery is fixed on the right end face of the flange, the connecting rod is installed on the right end face of the flange, and the connecting rod is arranged on the outside of the battery, the iron sheet is fixed on the right end face of the connecting rod, and the iron sheet is arranged on the right side of the fixing bolt, the fixing bolt is installed on the right end face of the flange, and the left end of the fixing bolt passes through the flange and extends to the left side of the flange, the groove is opened on the right end face of the flange, and a fixing bolt is provided inside the groove, the electric cylinder is fixed inside the groove, the arc plate is installed on the inner end of the electric cylinder, and a fixing bolt is provided on the inner side of the arc plate, and the alarm is installed on the annular side of the flange.

[0012] Furthermore, the loose alarm mechanism also includes a reset disc spring, a bearing, an insulating layer and a copper sheet. The reset disc spring is fixed to the right end face of the flange, and the reset disc spring is assembled on the annular side face of the connecting rod. The connecting rod is connected to the flange through a bearing, and the copper sheet is installed on the right end face of the fixing bolt. The insulating layer is arranged between the copper sheet and the fixing bolt. The battery is connected to the iron sheet through a wire, and the copper sheet is connected to the alarm bell through a wire, and the copper sheet is connected to the electric cylinder through a wire. By rotating the iron sheet, since the connecting rod is connected to the flange through the bearing, the rotation of the iron sheet drives the connecting rod to rotate, thereby increasing the potential energy of the reset disc spring. Then the fixing bolt is installed on the right end face of the flange, thereby The flange is fixed on the ash unloading valve, and then the copper sheet is fixed on the right end face of the insulating layer. When the fixing bolt becomes loose, the right end of the fixing bolt moves to the right, and the movement of the fixing bolt to the right drives the insulating layer to move to the right, and then the insulating layer drives the copper sheet to move to the right. When the copper sheet moves to the right and contacts with the iron sheet, the circuits between the battery, the alarm and the electric cylinder are connected at the same time, and then the alarm sounds to achieve the purpose of reminder. At the same time, the electric cylinder drives the arc plate to move inward along the groove. When the arc plate moves inward to contact with the rotating shaft, the arc plate locks the rotating shaft. Then the staff immediately closes the ash unloading valve upon hearing the alarm and tightens the fixing bolt, ultimately achieving the purpose of loosening alarm and locking.

[0013] Furthermore, the loosening alarm mechanism is provided with two groups, and the two groups of loosening alarm mechanisms are symmetrically installed on the right end face of the flange, and two groups of electric cylinders are symmetrically installed on the upper and lower walls inside the groove, and the inner ends of the two groups of electric cylinders are equipped with arc plates. By adding two groups of loosening alarm mechanisms, the safety of the installation of the fixing bolts is improved.

[0014] Beneficial effects of the present invention: A new type of special sealing device for an ash discharge valve of the present invention achieves the purpose of detecting the deviation of the rotating shaft because a clamping plate, a push rod, a slide groove, a slider, a return spring, a cam and a rotating shaft are added to the present invention.

[0015] Since the invention adds a storage battery, a connecting rod, an iron sheet, a fixing bolt, a groove, an electric cylinder, an arc plate and an alarm, the function of alarming when the fixing bolt is loosened is achieved, and the function of locking is also achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 This is a structural schematic diagram of a new type of special sealing device for ash discharge valve of the present invention;

[0018] Figure 2 This is an enlarged schematic diagram of point A in a new type of special sealing device for ash discharge valve of the present invention;

[0019] Figure 3 This is an enlarged schematic diagram of point B in a new type of special sealing device for ash discharge valve of the present invention;

[0020] Figure 4 It is a schematic diagram of a deviation detection mechanism in a new type of sealing device dedicated to an ash discharge valve of the present invention;

[0021] Figure 5 It is a schematic diagram of a loosening alarm mechanism in a new type of sealing device dedicated to an ash discharge valve of the present invention;

[0022] In the figure: 1-housing, 2-rotating shaft, 3-offset detection mechanism, 4-flange, 5-loosening alarm mechanism, 31-clamp, 32-push rod, 33-slide groove, 34-slider, 35-return spring, 36-cam, 37-rotating shaft, 51-battery, 52-connecting rod, 53-iron sheet, 54-fixing bolt, 55-groove, 56-electric cylinder, 57-arc plate, 58-alarm. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] See also Figure 1-Figure 5The present invention provides a technical solution: a new type of special sealing device for ash discharge valve, including a shell 1, a rotating shaft 2, a deviation detection mechanism 3, a flange 4 and a loose alarm mechanism 5, the shell 1 is assembled on the annular side of the rotating shaft 2, the right end of the flange 4 is mounted on the left end face of the shell 1, and the flange 4 is mounted on the annular side of the rotating shaft 2, the deviation detection mechanism 3 is mounted on the right end face of the shell 1, the loose alarm mechanism 5 is mounted on the right end face of the flange 4, and the loose alarm mechanism 5 is arranged on the outside of the shell 1, the deviation detection mechanism 3 includes a clamping plate 31, a push rod 32, a slide groove 33, a slider 34, a return spring 35, a cam 36 and a rotating shaft 37, and the loose alarm mechanism 5 includes a battery 51, a connecting rod 52, an iron sheet 53, a fixing bolt 54, a groove 55, an electric cylinder 56, an arc plate 57 and an alarm 58.

[0025] In the offset detection mechanism 3, the clamping plate 31 is assembled on the outside of the rotating shaft 2, the push rod 32 is fixed on the outer end of the clamping plate 31, the slide groove 33 is opened on the right end face of the shell 1, the slider 34 is assembled in the slide groove 33, and the push rod 32 is installed on the right end of the slider 34, the return spring 35 is assembled on the outer end of the slider 34, and the return spring 35 is installed inside the slide groove 33, the cam 36 is arranged on the right end face of the shell 1, the rotating shaft 37 is assembled on the right end face of the shell 1, and the cam 36 is installed on the left side of the annular side of the rotating shaft 37.

[0026] In the loose alarm mechanism 5, the battery 51 is fixed to the right end face of the flange 4, the connecting rod 52 is installed on the right end face of the flange 4, and the connecting rod 52 is arranged on the outside of the battery 51, the iron sheet 53 is fixed to the right end face of the connecting rod 52, and the iron sheet 53 is arranged on the right side of the fixing bolt 54, the fixing bolt 54 is installed on the right end face of the flange 4, and the left end of the fixing bolt 54 passes through the flange 4 and extends to the left side of the flange 4, the groove 55 is opened on the right end face of the flange 4, and the fixing bolt 54 is arranged inside the groove 55, the electric cylinder 56 is fixed inside the groove 55, the arc plate 57 is installed on the inner end of the electric cylinder 56, and the inner side of the arc plate 57 is provided with the fixing bolt 54, and the alarm 58 is installed on the flange

[0027] 4 circular sides.

[0028] As an embodiment of the present invention: a sintered graphite ring, an aramid packing and a mixed mud-like filler are arranged inside the outer shell 1, the aramid packing is assembled on the inner end face of the sintered graphite ring, and the mixed mud-like filler is arranged on the inner end face of the aramid packing. A through hole is opened on the right end face of the outer shell 1, and a rotating shaft 2 is installed in the through hole. When the ash discharge valve is working, the aramid packing and the sintered graphite ring are filled at both ends of the inner cavity of the outer shell 1 and are stationary, which is equivalent to the static ring of the mechanical seal. The mixed mud-like filler rotates with the rotating shaft 2, which is equivalent to the dynamic ring of the mechanical seal. When working, the rotating shaft 2 drives the mixed mud-like filler to rotate together, and forms a relative rotation with the aramid packing and the sintered graphite ring, forming a relative friction pair, achieving a sealing effect, ensuring zero leakage, achieving the purpose of sealing, and preventing material leakage.

[0029] As an embodiment of the present invention: a feeding port is processed on the upper side of the annular side surface of the shell 1, a curved pipe is installed on the upper end surface of the feeding port, a storage barrel is assembled on the right end of the curved pipe, and a stop valve is assembled on the upper side of the annular side surface of the curved pipe, an electric rod is installed on the right wall inside the storage barrel, and a piston is assembled on the left end of the electric rod. By opening the stop valve and then starting the electric rod, the electric rod drives the piston to move to the left along the inner wall of the storage barrel, thereby pushing the muddy filler into the curved pipe, and then the muddy filler moves along the curved pipe to the feeding port and enters the inside of the shell 1 through the feeding port. Through the above steps, the purpose of automatic filling is achieved and the sealing effect is guaranteed.

[0030] As an embodiment of the present invention: the offset detection mechanism 3 also includes a pointer, a protractor and a handwheel. The pointer is fixed on the outer end of the cam 36. The protractor is installed on the right end face of the housing 1, and the pointer is set on the right end face of the protractor. The handwheel is installed on the right end of the rotating shaft 37. By rotating the handwheel, the rotation of the handwheel drives the rotating shaft 37 to rotate, and the rotation of the rotating shaft 37 drives the cam 36 to rotate, and then the cam 36 drives the pointer to rotate around the protractor. At the same time, the rotation of the cam 36 drives the push rod 32 to move downward, and then the push rod 32 drives the slider 34 to move downward along the slide groove 33. The downward movement of the slider 34 forces the return spring 35 to stretch. At the same time, the downward movement of the push rod 32 drives the clamping plate 31 to move downward. When the two groups of clamping plates 31 are in contact with the annular side of the rotating shaft 37, the staff stops rotating the handwheel and observes the reading of the pointer on the protractor. When the two groups of readings are different, it means that the installation of the rotating shaft 37 is offset, thereby achieving the purpose of detecting whether the installation position of the rotating shaft 37 is offset or not, and ensuring the accuracy of the installation of the rotating shaft 37.

[0031] As an embodiment of the present invention: two groups of offset detection mechanisms 3 are provided, and the two groups of offset detection mechanisms 3 have the same structure. The two groups of offset detection mechanisms 3 are symmetrically installed on the right end surface of the shell 1. By having the two groups of offset detection mechanisms 3 work simultaneously, the purpose of calculating the offset difference is achieved, which facilitates the judgment of the offset direction of the rotating shaft 37.

[0032] As an example of the present invention: the loose alarm mechanism 5 also includes a reset coil spring, a bearing, an insulating layer and a copper sheet. The reset coil spring is fixed to the right end face of the flange 4, and the reset coil spring is assembled on the annular side face of the connecting rod 52. The connecting rod 52 is connected to the flange 4 through the bearing. The copper sheet is installed on the right end face of the fixing bolt 54. The insulating layer is arranged between the copper sheet and the fixing bolt 54. The battery 51 is connected to the iron sheet 53 through a wire, and the copper sheet is connected to the alarm bell 58 through a wire. The copper sheet is connected to the electric cylinder 56 through a wire. By rotating the iron sheet 53, since the connecting rod 52 is connected to the flange 4 through the bearing, the rotation of the iron sheet 53 drives the connecting rod 52 to rotate, thereby realizing the increase of the potential energy of the reset coil spring, and then the fixing bolt 54 is installed on the right end face of the flange 4, thereby fixing the flange 4 on the dust removal device. When the fixing bolt 54 is loosened, the right end of the fixing bolt 54 moves to the right, and the fixing bolt 54 moves to the right, driving the insulating layer to move to the right, and then the insulating layer drives the copper sheet to move to the right. When the copper sheet moves to the right and contacts with the iron sheet 53, the circuits between the battery 51, the alarm 58 and the electric cylinder 56 are connected at the same time, and then the alarm 58 sounds to achieve the purpose of reminder. At the same time, the electric cylinder 56 drives the arc plate 57 to move inward along the groove 55. When the arc plate 57 moves inward to contact with the rotating shaft 37, the arc plate 57 locks the rotating shaft 37. Then the staff immediately closes the ash unloading valve when they hear the alarm 58 and tightens the fixing bolt 54, thereby achieving the purpose of loosening alarm and locking.

[0033] As an embodiment of the present invention: two groups of loosening alarm mechanisms 5 are provided, and the two groups of loosening alarm mechanisms 5 are symmetrically installed on the right end surface of the flange 4, and two groups of electric cylinders 56 are symmetrically installed on the upper and lower walls inside the groove 55, and the inner ends of the two groups of electric cylinders 56 are equipped with arc plates 57. By adding two groups of loosening alarm mechanisms 5, the safety of the installation of the fixing bolts 54 is improved.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of sealing device for ash discharge valve, comprising a housing, a rotating shaft, a deviation detection mechanism, a flange and a loosening alarm mechanism, characterized in that: The housing is mounted on the annular side surface of the rotating shaft, the right end of the flange is mounted on the left end surface of the housing, and the flange is mounted on the annular side surface of the rotating shaft, the offset detection mechanism is mounted on the right end surface of the housing, the loose alarm mechanism is mounted on the right end surface of the flange, and the loose alarm mechanism is arranged on the outside of the housing, the offset detection mechanism includes a clamping plate, a push rod, a slide groove, a slider, a return spring, a cam and a rotating shaft, and the loose alarm mechanism includes a battery, a connecting rod, an iron sheet, a fixing bolt, a groove, an electric cylinder, an arc plate and an alarm bell; In the offset detection mechanism, the clamping plate is mounted on the outside of the rotating shaft, the push rod is fixed on the outer end of the clamping plate, the slide groove is opened on the right end surface of the housing, the slider is mounted in the slide groove, and the push rod is installed on the right end of the slider, the return spring is mounted on the outer end of the slider, and the return spring is installed inside the slide groove, the cam is arranged on the right end surface of the housing, the rotating shaft is mounted on the right end surface of the housing, and the cam is installed on the left side of the annular side surface of the rotating shaft; The offset detection mechanism also includes a pointer, a protractor and a handwheel. The pointer is fixed on the outer end of the cam, the protractor is installed on the right end face of the housing, and the pointer is set on the right end face of the protractor. The handwheel is installed on the right end of the rotating shaft. By turning the handwheel, the rotation of the handwheel drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the cam to rotate, and then the cam drives the pointer to rotate around the protractor. At the same time, the rotation of the cam drives the push rod to move downward, and then the push rod drives the slider to move downward along the slide groove. The downward movement of the slider forces the return spring to stretch, and at the same time, the downward movement of the push rod drives the clamp plate to move downward. When both groups of clamp plates are in contact with the annular side of the rotating shaft, the staff stops turning the handwheel and observes the reading of the pointer on the protractor. When the two groups of readings are different, it means that the installation of the rotating shaft is offset, so as to achieve the purpose of detecting whether the installation position of the rotating shaft is offset or not, and ensure the accuracy of the installation of the rotating shaft. The offset detection mechanism is provided with two groups, and the two groups of the offset detection mechanism have the same structure. The two groups of the offset detection mechanism are symmetrically installed on the right end surface of the housing. The two groups of the offset detection mechanism work simultaneously, so as to achieve the purpose of calculating the offset difference, and facilitate the determination of the offset direction of the rotating shaft; In the loose alarm mechanism, the battery is fixed on the right end face of the flange, the connecting rod is installed on the right end face of the flange, and the connecting rod is arranged on the outside of the battery, the iron sheet is fixed on the right end face of the connecting rod, and the iron sheet is arranged on the right side of the fixing bolt, the fixing bolt is installed on the right end face of the flange, and the left end of the fixing bolt passes through the flange and extends to the left side of the flange, the groove is opened on the right end face of the flange, and a fixing bolt is arranged inside the groove, the electric cylinder is fixed inside the groove, the arc plate is installed on the inner end of the electric cylinder, and a fixing bolt is arranged on the inner side of the arc plate, and the alarm is installed on the annular side of the flange; The loose alarm mechanism also includes a reset disc spring, a bearing, an insulating layer and a copper sheet. The reset disc spring is fixed to the right end face of the flange, and the reset disc spring is assembled on the annular side face of the connecting rod. The connecting rod is connected to the flange through a bearing, and the copper sheet is installed on the right end face of the fixing bolt. The insulating layer is arranged between the copper sheet and the fixing bolt. The battery is connected to the iron sheet through a wire, and the copper sheet is connected to the alarm bell through a wire, and the copper sheet is connected to the electric cylinder through a wire. By rotating the iron sheet, since the connecting rod is connected to the flange through a bearing, the rotation of the iron sheet drives the connecting rod to rotate, thereby realizing The potential energy of the reset coil spring is increased, and then the fixing bolt is installed on the right end face of the flange, and then the flange is fixed on the ash discharge valve, and then the copper sheet is fixed on the right end face of the insulating layer. When the fixing bolt is loosened, the right end of the fixing bolt moves to the right, and the fixing bolt moves to the right, driving the insulating layer to move to the right, and then the insulating layer drives the copper sheet to move to the right. When the copper sheet moves to the right and contacts the iron sheet, the circuits between the battery, the alarm bell and the electric cylinder are connected at the same time. At the same time, the electric cylinder drives the arc plate to move inward along the groove. When the arc plate moves inward to contact the fixing bolt, the arc plate locks the fixing bolt. A sintered graphite ring, aramid packing and mixed mud filler are arranged inside the shell. The aramid packing is assembled on the inner end face of the sintered graphite ring, and the mixed mud filler is arranged on the inner end face of the aramid packing. A through hole is opened on the right end face of the shell, and a rotating shaft is installed in the through hole. When the ash discharge valve is working, the aramid packing and the sintered graphite ring are filled at both ends of the inner cavity of the shell and are stationary, which is equivalent to the static ring of the mechanical seal. The mixed mud filler rotates with the rotating shaft, which is equivalent to the dynamic ring of the mechanical seal. When working, the rotating shaft drives the mixed mud filler to rotate together, and forms a relative rotation with the aramid packing and the sintered graphite ring, forming a relative friction pair.

2. A new type of special sealing device for ash discharge valve according to claim 1, characterized in that: A feeding port is processed on the upper side of the annular side of the shell, a curved pipe is installed on the upper end face of the feeding port, a storage barrel is assembled on the right end of the curved pipe, and a stop valve is assembled on the upper side of the annular side of the curved pipe, an electric rod is installed on the right wall inside the storage barrel, and a piston is assembled on the left end of the electric rod. By opening the stop valve and then starting the electric rod, the electric rod drives the piston to move to the left along the inner wall of the storage barrel, thereby pushing the muddy filler into the curved pipe, and then the muddy filler moves along the curved pipe to the feeding port and enters the shell through the feeding port.

3. A new type of dedicated sealing device for ash discharge valve according to claim 1, characterized in that: The loosening alarm mechanism is provided with two groups, and the two groups of loosening alarm mechanisms are symmetrically installed on the right end face of the flange. Two groups of electric cylinders are symmetrically installed on the upper and lower walls inside the groove, and the inner ends of the two groups of electric cylinders are equipped with arc plates. By adding two groups of loosening alarm mechanisms, the safety of the installation of the fixing bolts is improved.

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