Cinder valve

Abstract

The utility model discloses a cinder valve. The cinder valve comprises a shell, an impeller assembly, two sealing end covers, a bearing support and a bearing. A shell inner cavity is formed in the shell, and a first opening and a second opening which are communicated with the shell inner cavity are further formed in the side wall of the shell; the impeller assembly comprises an impeller shaft and a plurality of blades, and the blades are connected to the impeller shaft and arranged in the inner cavity of the shell. One sealing end cover covers the first opening, the other sealing end cover covers the second opening, and the side, away from the shell, of each sealing end cover is connected with a bearing support; the impeller shaft penetrates through the sealing end cover and is rotationally connected with the bearing support through a bearing, and a first sealing structure is arranged between the sealing end cover and the impeller shaft. According to the cinder valve, sundries entering the bearing can be reduced, so that the service life of the bearing is prolonged, and the operation efficiency of the cinder valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the valve field especially relates to the ash valve. BACKGROUND

[0002] The ash valve is the equipment that is often used in thermal power plant and industrial boiler, is used for discharging dust and solid waste. The ash valve is in the operation process, the rotating shaft is arranged in the valve body through the bearing. However, the equipment generates a large amount of fly ash in the operation process, sundries enter the bearing and cause the bearing inner and outer ring gap, thereby causing the rotating shaft axial excursion and radial runout, the bearing in the ash valve not only will enter the ash and cause the bearing damage, increase the operation resistance of ash valve. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, one purpose of the utility model is to provide an ash valve, which can reduce the sundries entering the bearing, thereby prolonging the service life of the bearing and improving the operation efficiency of the ash valve.

[0004] The embodiment provides an ash valve, which comprises a shell, an impeller assembly, two sealing end covers, a bearing support and a bearing. The shell has a shell cavity in the shell, a feed inlet is formed in the top of the shell and is communicated with the shell cavity, and a discharge outlet is formed in the bottom of the shell and is communicated with the shell cavity; the impeller assembly comprises an impeller shaft and a plurality of blades, the blades are connected to the impeller shaft and are arranged between the feed inlet and the discharge outlet, and the blades are used for cutting off solid particles and driving the solid particles to be discharged from the discharge outlet; a first open port and a second open port are further formed in the side wall of the shell and are communicated with the shell cavity; the two sealing end covers are arranged at the first open port and the second open port respectively, and the bearing support is connected to the side of each sealing end cover away from the shell; wherein the impeller shaft penetrates through the sealing end cover and is rotationally connected to the bearing support through the bearing, and a first sealing structure is arranged between the sealing end cover and the impeller shaft.

[0005] In some embodiments, a first perforation for penetrating through the impeller shaft is arranged on the sealing end cover; the first sealing structure comprises an annular boss arranged around the first perforation and a sealing gland; one end of the annular boss is connected to the side of the sealing end cover away from the shell, the sealing gland is fixed to the other end of the annular boss and encloses a sealing cavity between the sealing end cover, and the sealing cavity is filled with a liquid sealing material.

[0006] In some embodiments, the first sealing structure further comprises two annular sealing plates arranged at intervals in the sealing cavity, and each annular sealing plate is arranged between the annular boss and the impeller shaft; the liquid sealing material is arranged between the two annular sealing plates.

[0007] In some embodiments, the sealing end cover is detachably mounted on the shell by fasteners.

[0008] In some embodiments, the sealing end cover is connected with the shell by a silicone rubber seal ring.

[0009] In some embodiments, the ash discharge valve further comprises a bearing seat and a bearing pressing plate; the bearing seat is arranged on the side of the bearing support close to the shell, and the bearing pressing plate is used to press the bearing against the bearing seat; the bearing seat is connected with the impeller shaft by a second sealing structure.

[0010] In some embodiments, a second through hole for passing the impeller shaft is formed on the bearing seat; the second sealing structure comprises a seal ring; the inner circle of the second through hole is connected with the impeller shaft by the seal ring.

[0011] In some embodiments, the blades are sprayed with anti-sticking silicon carbide paint on the cavity wall of the shell inner cavity.

[0012] In some embodiments, the thickness of the anti-sticking silicon carbide paint is 0.8mm-1.2mm.

[0013] In some embodiments, a driving motor is further included, and the output shaft of the driving motor is connected with the impeller shaft by a shaft coupling.

[0014] It can be seen from the technical scheme that the embodiments provided by the utility model have the following advantages: (1) the treatment of solid particles by the ash discharge valve occurs in the shell inner cavity, the bearing is arranged outside the shell in the application, the bearing is rotatably connected with the impeller shaft outside the shell, the flying ash and sundries can be reduced from entering the bearing, and thus the service life of the bearing is prolonged; (2) the first sealing structure is arranged between the sealing end cover and the impeller shaft, the solid particles and the gas can be reduced from passing through the gap between the sealing end cover and the impeller shaft, the air locking capacity of the shell inner cavity is improved, and the operation efficiency of the ash discharge valve is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without paying creative labor.

[0016] Figure 1 is a sectional view of the ash discharge valve according to the embodiments of the utility model;

[0017] Figure 2is a sectional view of the ash unloading valve according to the embodiment of the utility model;

[0018] Figure 3 is a sectional view of the ash unloading valve according to the embodiment of the utility model.

[0019] Reference signs:

[0020] Ash unloading valve 100,

[0021] Housing 1, housing inner cavity 10, first open port 11, second open port 12, feed port 13, discharge port 14;

[0022] Impeller assembly 2, impeller shaft 21, blade 22;

[0023] Sealing end cover 3, first sealing structure 31, annular boss 311, sealing gland 312, sealing cavity 313, liquid sealing material 314, annular sealing press plate 315;

[0024] Bearing support 4, bearing 41;

[0025] Bearing seat 51, bearing press plate 52, oil filler nozzle 521, second sealing structure 53;

[0026] Fastener 6;

[0027] Silicone rubber sealing ring 7;

[0028] Driving motor 8, speed reducer 81;

[0029] Coupler 9. DETAILED DESCRIPTION

[0030] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0031] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the features limited by "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0032] In the description of the utility model, it should be explained that, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In actual production application, the applicant finds that the bearing of the ash discharge valve is easy to enter sundries and cause damage, and the failure rate is high. In order to solve the above problems, the applicant proposes an ash discharge valve 100.

[0038] The following refers to Figures 1-3 The ash discharge valve 100 according to the embodiments of the utility model is described.

[0035] Embodiment one

[0036] As Figures 1-3 shown, the embodiment provides an ash discharge valve 100, the ash discharge valve 100 includes a shell 1, an impeller assembly 2, two sealing end covers 3, a bearing support 4 and a bearing 41.

[0037] The shell 1 has a shell inner cavity 10, the top of the shell 1 is provided with a feeding port 13 communicating with the shell inner cavity 10, and the bottom of the shell 1 is provided with a discharging port 14 communicating with the shell inner cavity 10. The sidewall of the shell 1 is further provided with a first open port 11 and a second open port 12, the first open port 11 communicates with the shell inner cavity 10, and the second open port 12 communicates with the shell inner cavity 10. The impeller assembly 2 includes an impeller shaft 21 and blades 22, the blades 22 are connected to the impeller shaft 21 and arranged in the shell inner cavity 10, the blades 22 are connected to the impeller shaft 21 and arranged between the feeding port 13 and the discharging port 14, and the blades 22 are used to cut off solid particles and drive the solid particles to be discharged from the discharging port 14. One sealing end cover 3 is arranged on the first open port 11, and another sealing end cover 3 is arranged on the second open port 12, each sealing end cover 3 is connected to a bearing support 4 away from the shell 1, the impeller shaft 21 penetrates through the sealing end cover 3 and is rotatably connected to the bearing support 4 through a bearing 41, and a first sealing structure 31 is arranged between the sealing end cover 3 and the impeller shaft 21.

[0038] In a specific example, the top of the shell 1 is generally provided with the feeding port 13, and the bottom of the shell 1 is generally provided with the discharging port 14. The sidewall of the shell 1 is provided with the first open port 11 and the second open port 12, the first open port 11 and the second open port 12 are oppositely arranged, the first open port 11 is arranged on the left sidewall of the shell 1 and communicates with the shell inner cavity 10, the second open port 12 is arranged on the right sidewall of the shell 1 and communicates with the shell inner cavity 10, one sealing end cover 3 is arranged on the first open port 11, and another sealing end cover 3 is arranged on the second open port 12, each sealing end cover 3 is connected to a bearing support 4 away from the shell 1, the impeller shaft 21 penetrates through the sealing end cover 3 and is rotatably connected to the bearing support 4 through a bearing 41, and a first sealing structure 31 is arranged between the sealing end cover 3 and the impeller shaft 21. In the shell inner cavity 10, the blades 22 rotate around the impeller shaft 21. When the solid waste enters the shell inner cavity 10 through the feeding port 13, the blades 22 rotate to cut off the solid waste. The dust and waste can be discharged through the discharging port 14 of the shell 1.

[0039] Specifically, the working process of the ash valve 100 can be divided into three stages: feeding stage, cutting stage and discharging stage. In the feeding stage, dust and solid waste enter the inner cavity 10 of the shell 1 through the feeding port 13 of the shell 1. The feeding port 13 is usually located at the top of the shell 1, and the solid waste is introduced into the inner cavity 10 of the shell 1 by gravity or pressure. The key to the feeding stage is to maintain a suitable feeding speed to ensure that the blade 22 can handle and discharge the solid waste. After entering the cutting stage, the blade 22 starts to rotate to cut the solid particles. The rotation speed and shape design of the blade 22 are key factors that determine the contact force and cutting effect between the blade 22 and the solid particles. Through suitable blade 22 design and rotation speed, the ash valve 100 can effectively cut solid particles of different sizes. The discharging stage is the last stage of the ash valve 100. The cut solid particles are pushed by the blade 22 to the discharge port 14 of the shell 1, and the solid particles are discharged from the discharge port 14 under the action of their own gravity. The discharge port 14 is directly connected to the exhaust system or treatment equipment. In the discharging stage, the key is to keep the outlet of the shell 1 unobstructed to ensure that the solid waste can be smoothly discharged.

[0040] Therefore, the treatment of solid particles by the ash valve 100 occurs in the inner cavity 10 of the shell, and the bearing 41 is arranged outside the shell 1, and the bearing 41 is rotatably connected with the impeller shaft 21 outside the shell 1, which can reduce the entry of fly ash into the bearing 41, thereby prolonging the service life of the bearing 41 and improving the operating efficiency of the ash valve 100; by arranging the first sealing structure 31 between the sealing end cover 3 and the impeller shaft 21, the entry of solid particles and gas through the gap between the sealing end cover 3 and the impeller shaft 21 can be reduced, the air locking capability of the inner cavity 13 of the shell can be improved, and the operating efficiency of the ash valve 100 can be further improved.

[0041] In a specific example, the blade 22 can adopt a star-shaped blade 22.

[0042] As shown in Figure 1 and Figure 2 Further, the sealing end cover 3 is provided with a first through hole for passing through the impeller shaft 21, and the first sealing structure 31 includes an annular boss 311 and a sealing gland 312. The annular boss 311 is arranged around the first through hole, one end of the annular boss 311 is connected to the side of the sealing end cover 3 away from the shell 1, the sealing gland 312 is fixed to the other end of the annular boss 311, and a sealing cavity 313 is enclosed between the sealing gland 312 and the sealing end cover 3. The sealing cavity 313 is filled with a liquid sealing material 314. Therefore, by arranging the sealing cavity structure, the sealing material consumption is less, and the addition is more convenient; the sealing cavity is sealed by the liquid sealing material 314, which has good compensation and tight sealing on one hand, and is beneficial to the lubrication of the impeller shaft 21, improving the smoothness of the rotation of the impeller shaft 21 on the other hand.

[0043] As Figure 1 and Figure 2 Further, the first sealing structure 31 further comprises two annular sealing plates 315 arranged in the sealing cavity 313, each annular sealing plate 315 is arranged between the annular boss 311 and the impeller shaft 21, and the liquid sealing material 314 is arranged between the two annular sealing plates 315. The outer ring of the annular sealing plate 315 abuts against the inner ring of the annular boss 311, and the inner ring of the annular sealing plate 315 abuts against the outer circumferential surface of the impeller shaft 21. By arranging the liquid sealing material 314 between the two annular sealing plates 315, the leakage of the liquid sealing material 314 and the leakage of solid particles can be further reduced.

[0044] As Figure 1 shown in a specific example, the middle part of the sealing gland 312 is provided with an annular protrusion, which is used to abut against the annular sealing plate 315 adjacent to the sealing gland.

[0045] Embodiment two

[0046] As Figure 1 and Figure 2 Further, the sealing end cover 3 is detachably mounted on the shell 1 by the fastener 6, which meets the requirement of frequent and comprehensive cleaning of the impeller assembly 2, and improves the service life of the ash discharge valve 100.

[0047] As Figure 1 and Figure 2 Further, the sealing end cover 3 and the shell 1 are connected by the silicone rubber sealing ring 7. By installing the silicone rubber sealing ring 7 for sealing, the air locking function of the shell inner cavity 10 can be increased, and the conveying efficiency and sealing performance can be improved.

[0048] In the related art, because the SiO2 content in fly ash is large, it is easy to absorb moisture, and it is easy to form hard clumps during conveying, thereby increasing the resistance. By installing the silicone rubber sealing ring 7 for sealing, the air locking function of the shell inner cavity 10 can be increased, and the conveying efficiency and sealing performance can be improved.

[0049] As Figure 1 and Figure 2 In a specific example, the thickness of the silicone rubber sealing ring 7 can be 5mm.

[0050] Embodiment three

[0051] In actual production application, the applicant found that the bearing of the ash discharge valve is not provided with a sealing structure, and the bearing is damaged by entering ash.

[0052] As Figure 1 and Figure 2As shown, further, the ash discharge valve 100 further comprises a bearing seat 51 and a bearing pressing plate 52, the bearing seat 51 is arranged on the side of the bearing support 4 close to the shell 1, the bearing pressing plate 52 is used to press the bearing 41 against the bearing seat 51, and the bearing seat 51 is connected with the impeller shaft 21 through a second sealing structure 53, so that the entry of sundries into the bearing 41 can be further reduced during the operation of the device, the inner and outer ring gap of the bearing 41 is reduced, and the occurrence probability of the axial movement and the radial runout of the impeller is further reduced, so that the resistance is reduced.

[0053] Further, the ash discharge valve 100 is further provided with a dust cover, and the dust cover is arranged on the bearing support.

[0054] As shown in Figure 1 and Figure 2 Further, the bearing seat 51 is provided with a second perforation for passing the impeller shaft 21, and the second sealing structure 53 comprises a sealing ring, and the inner ring of the second perforation is connected with the impeller shaft 21 through the sealing ring, so that the sealing form is the sealing ring sealing, the universality is higher, and the cost is lower.

[0055] As shown in Figure 1 and Figure 2 Further, the bearing pressing plate 52 is further provided with an oil filler 521, and the oil filler 521 is arranged on the side of the bearing pressing plate 52 away from the bearing support 4, and the oil filler 521 is used to add lubricating oil to the bearing 41. Therefore, the bearing 41 is more convenient to supplement the lubricating oil.

[0056] Example four

[0057] Further, the blade 22 and the cavity wall of the shell inner cavity 10 are sprayed with anti-sticking silicon carbide paint, the probability of material sticking is reduced, the discharging is more smooth, and the caking is reduced.

[0058] Further, the thickness of the anti-sticking silicon carbide paint is 0.8mm~1.2mm.

[0059] Alternatively, the thickness of the anti-sticking silicon carbide paint can be 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, and here the thickness of the anti-sticking silicon carbide paint is not listed one by one.

[0060] Example five

[0061] In actual production and application, the applicant finds that the base of the chain transmission type ash discharge valve is easy to crack, and the failure rate is high.

[0062] As shown in Figure 1 and Figure 2As shown, further, the ash valve 100 also includes a drive motor 8, an output shaft of the drive motor 8 is connected with the impeller shaft 21 through a coupling 9, a transmission device of the drive motor 8 is changed from chain transmission to direct connection driving through the coupling 9, which can reduce the base cracking and reduce the failure rate.

[0063] As shown, specifically, an output shaft of the drive motor 8 is connected with a speed reducer 81, a transmission shaft of the speed reducer 81 is connected with the impeller shaft 21 through the coupling 9 and drives the impeller shaft 21 to rotate, thereby driving the blade 22 to rotate. Figure 2

[0064] Other configurations and operations of the ash valve 100 according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail herein. In the description of the present application, "a first feature", "a second feature" can include one or more of the features. Among them, the up-down direction, the left-right direction and the front-rear direction are based on the up-down direction, the left-right direction and the front-rear direction shown in the figure.

[0065] In the description of the present application, unless otherwise explicitly specified and limited, the "first feature" is "above" or "below" the "second feature", which can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "first feature" is "above", "above" and "above" the "second feature", which includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0066] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the claims and their equivalents.​

Claims

1. A cinder valve, characterized in that The utility model relates to a kind of solid-liquid separation device, including: Shell (1), with shell inner cavity (10) in the shell (1), the top of the shell (1) is equipped with the feed inlet (13) that communicates shell inner cavity (10), the bottom of the shell (1) is equipped with the discharge outlet (14) that communicates shell inner cavity (10); Impeller assembly (2), including impeller shaft (21) and multiple blades (22), the blade (22) is connected on the impeller shaft (21) and is located between the feed inlet (13) and the discharge outlet (14), the blade (22) is used to cut off solid particles and drive solid particles to discharge the discharge outlet (14); First open mouth (11) and second open mouth (12) that communicate shell inner cavity (10) are further equipped on the side wall of the shell (1); Two sealing end covers (3), one cover is equipped in the first open mouth (11), another cover is equipped in the second open mouth (12), each sealing end cover (3) is connected bearing support (4) on the side away from the shell (1); Wherein, the impeller shaft (21) passes through the sealing end cover (3) and is rotatably connected with the bearing support (4) by bearing (41), first sealing structure (31) is equipped between the sealing end cover (3) and the impeller shaft (21); First perforation for passing through the impeller shaft (21) is equipped on the sealing end cover (3); The first sealing structure (31) includes annular boss (311) and sealing gland (312) arranged around the first perforation; One end of the annular boss (311) is connected on the side away from the shell (1) of the sealing end cover (3), the sealing gland (312) is fixed on the other end of the annular boss (311) and is enclosed with the sealing end cover (3) and forms sealing cavity (313), the sealing cavity (313) is filled with liquid sealing material (314); The first sealing structure (31) further includes two annular sealing pressure plates (315) arranged in the sealing cavity (313), each annular sealing pressure plate (315) is arranged between the annular boss (311) and the impeller shaft (21); The liquid sealing material (314) is arranged between the two annular sealing pressure plates (315); The middle part of the sealing gland (312) is provided with an annular lug, and the annular lug is used for abutting against the annular sealing pressure plate (315) adjacent to the sealing gland.

2. The ash valve according to claim 1, characterized in that The sealing end cover (3) is detachably mounted on the shell (1) by fastener (6).

3. The ash valve of claim 1, wherein The sealing end cover (3) and the shell (1) are connected by silicone rubber seal ring (7).

4. The ash valve of claim 1, wherein It further includes bearing seat (51) and bearing pressing plate (52); The bearing seat (51) is arranged on the side of the bearing support (4) close to the shell (1), and the bearing pressing plate (52) is used to abut the bearing (41) on the bearing seat (51); The bearing seat (51) and the impeller shaft (21) are connected by second sealing structure (53).

5. The trap valve of claim 4, wherein, The bearing seat (51) is provided with a second through hole for passing the impeller shaft (21); The second sealing structure (53) comprises a sealing ring; The inner ring of the second through hole is connected with the impeller shaft (21) through the sealing ring.

6. The trap valve (100) of claim 1, wherein, The blade (22) and the cavity wall of the shell inner cavity (10) are both sprayed with anti-sticking silicon carbide paint.

7. The trap valve of claim 6, wherein, The thickness of the anti-sticking silicon carbide paint is 0.8mm-1.2mm.

8. The ash valve of claim 1, wherein A driving motor (8) is further included, and the output shaft of the driving motor (8) is connected with the impeller shaft (21) through a shaft coupling (9).

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