Cinder valve

Abstract

The utility model provides a cinder valve which comprises a lower valve body, an upper valve body, a rotating valve body and an inflation sealing ring, the lower valve body is used for being connected with a main pipeline, the upper valve body is connected to the upper end of the lower valve body and connected with a cinder outlet pipe, the rotating valve body is rotationally connected into the lower valve body, the inflation sealing ring is embedded in the upper valve body, and the inflation sealing ring is connected with the upper valve body. The upper valve body is provided with a purging opening and a purging gap communicating with the purging opening, and the purging gap extends to the bottom of the upper valve body and is used for purging the peripheral wall of the rotating valve body. According to the cinder valve, the rotating valve body can rotate to block the lower opening of the upper valve body, the upper valve body is effectively blocked by the rotating valve body by inflating and deflating the inflatable sealing ring, the sealing performance of the cinder valve in the closed state is guaranteed, the machining difficulty of the rotating valve body can be reduced through the structure, and the machining cost is reduced. Due to the arrangement of the inflatable sealing ring, reliable sealing of the structure can be achieved, abrasion of the rotating valve body in the opening and closing process can be avoided, and the service life of the cinder valve is effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of on-off connection of gas dust removal pipelines, and more specifically relates to an ash discharge valve. Background Art

[0002] Ash discharge valves are typically installed on gas dust removal pipelines. Due to the harsh operating conditions, high dust content in the medium, and frequent opening and closing of the valve, high requirements are placed on the valve's wear resistance and sealing performance. Existing ash discharge valves are mostly ball valve structures. To ensure sealing performance, the outer wall of the ball valve needs to be in close contact with the corresponding position in the valve body. During use, they are easily affected by dust particles and wear, and the valve core ball is prone to wear. Therefore, ash discharge valves are fragile and consumable products with a short service life. This not only increases the operating cost of the equipment, but more importantly, affects the production efficiency of the system. Utility Model Content

[0003] The purpose of the utility model is to provide an ash discharge valve, which can reduce the structural wear of the ash discharge valve, avoid damage to the ash discharge valve, reduce production costs, and ensure work efficiency.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an ash unloading valve, including a lower valve body, an upper valve body, a rotating valve body and an inflatable sealing ring, the lower valve body is used to be connected to the main pipeline, the upper valve body is connected to the upper end of the lower valve body, and is connected to the ash discharge pipe, the rotating valve body is rotatably connected to the lower valve body, and is used to seal the lower port of the upper valve body, the inflatable sealing ring is embedded in the upper valve body, and is used to abut and seal with the outer wall of the rotating valve body, the upper valve body is provided with a purge port and a purge gap connected to the purge port, the purge gap extends to the bottom of the upper valve body, and is used to purge the outer peripheral wall of the rotating valve body.

[0005] In one possible implementation, the bottom of the upper valve body is provided with an embedding groove for installing an inflatable sealing ring, the inner cavity of the inflatable sealing ring is provided with a pressure ring plate, and a threaded part threadedly connected to the pressure ring plate is passed through the upper valve body. The threaded part can drive the pressure ring plate to move to the side away from the rotating valve body so that the inflatable sealing ring is pressed against the bottom wall of the embedding groove.

[0006] In some embodiments, a plurality of threaded members are provided at intervals along the circumference of the upper valve body and respectively engage with the threads of the pressure ring plate. At least one threaded member is provided with an inflation channel connected to the inflation sealing ring.

[0007] In a possible implementation, the horizontal projections of the inflatable sealing ring and the pressure ring plate are both rectangular, the rotating valve body has an outer arc surface extending in an arc shape around its axis, and the inflatable sealing ring and the pressure ring plate are arched upward along the outer arc surface of the rotating valve body.

[0008] In a possible implementation, a sealing rib is provided on the end face of the inflatable sealing ring adjacent to the rotating valve body. The sealing rib extends along the direction of the inflatable sealing ring and is used to press against the outer peripheral wall of the rotating valve body.

[0009] In a possible implementation, the upper valve body includes a sleeve and a wear-resistant sleeve. The sleeve is sleeved on the outer periphery of the wear-resistant sleeve, and the purging port is provided on the sleeve. A purging gap is formed between the sleeve and the wear-resistant sleeve, and the purging gap extends along the circumferential direction of the upper valve body.

[0010] In some embodiments, a circumferentially extending inner groove is provided on the inner peripheral wall of the sleeve. The inner groove penetrates the sleeve downward, and the bottom wall and side wall of the inner groove and the outer peripheral wall of the wear-resistant sleeve enclose the purging gap.

[0011] In a possible implementation, the upper valve body has a lower arc surface that slidably cooperates with the rotating valve body. The inflatable sealing ring is embedded in the lower arc surface. A scraper is provided on one side edge of the rotating valve body, and the scraper can rotate synchronously with the rotating valve body to clean the lower arc surface.

[0012] In some embodiments, the rotating valve body includes a central shaft, a connecting plate, and an arc-shaped valve plate. The arc-shaped valve plate is connected to the central shaft through a plurality of connecting plates. The connecting plates extend radially along the central shaft, and the scraper is connected to one side edge of the arc-shaped valve plate.

[0013] In some embodiments, an installation groove for installing the scraper is provided on the side of the arc-shaped valve plate. The scraper is connected to the installation groove through a connecting piece, and the scraper has a scraping surface that abuts against the outer peripheral wall of the arc-shaped valve plate.

[0014] Compared with the prior art, in the solution shown in the embodiments of the present application, the rotating valve body can rotate to block the lower opening of the upper valve body. By performing inflation and deflation operations on the inflatable sealing ring, effective sealing of the rotating valve body to the upper valve body can be achieved, ensuring the sealing performance of the ash discharge valve in the closed state. The above structure can reduce the processing difficulty of the rotating valve body. The setting of the inflatable sealing ring can not only achieve reliable sealing of the structure but also avoid wear of the rotating valve body during the opening and closing process. Compared with the spherical valve plate, it can avoid serious erosion of the rotating valve body by the medium after the ash discharge valve is opened, effectively extending the service life of the ash discharge valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1Schematic diagram of the front view and cross-section of the ash discharge valve provided by the embodiment of the present utility model;

[0017] Figure 2 For the embodiment of the present utility model Figure 1 Partial enlarged structural schematic diagram of I in;

[0018] Figure 3 For the embodiment of the present utility model Figure 1 Partial enlarged structural schematic diagram of II in;

[0019] Figure 4 For the embodiment of the present utility model Figure 1 Airflow direction diagram in the purging gap in;

[0020] Figure 5 For the embodiment of the present utility model Figure 1 Top view structural schematic diagram of the inflatable sealing ring in;

[0021] Figure 6 For the embodiment of the present utility model Figure 5 Cross-sectional structural schematic diagram of A-A in;

[0022] Figure 7 For the embodiment of the present utility model Figure 1 Top view structural schematic diagram of the pressing ring plate in;

[0023] Figure 8 For the embodiment of the present utility model Figure 7 Cross-sectional structural schematic diagram of B-B in.

[0024] Among them, each reference numeral in the figure:

[0025] 1. Lower valve body; 2. Upper valve body; 21. Sleeve; 22. Wear-resistant sleeve; 23. Purging gap; 24. Purging port; 25. Lower arc surface; 26. Inner groove; 3. Rotating valve body; 31. Central axis; 32. Connecting plate; 33. Arc-shaped valve plate; 34. Installation groove; 4. Inflatable sealing ring; 41. Sealing rib; 5. Scraper; 51. Connecting piece; 52. Scratching surface; 6. Pressing ring plate; 7. Threaded part; 71. Inflation channel. Specific embodiments

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0028] Please refer to Figures 1 to 8 , and now the ash discharge valve provided by the present utility model will be described. The ash discharge valve includes a lower valve body 1, an upper valve body 2, a rotating valve body 3, and an inflatable sealing ring 4. The lower valve body 1 is used to be connected to the main pipeline. The upper valve body 2 is connected to the upper end of the lower valve body 1 and is connected to the ash discharge pipe. The rotating valve body 3 is rotatably connected inside the lower valve body 1 and is used to block the lower opening of the upper valve body 2. The inflatable sealing ring 4 is installed on the upper valve body 2 and is used to abut and seal against the outer wall of the rotating valve body 3. The upper valve body 2 is provided with a purging port 24 and a purging gap 23 communicating with the purging port 24. The purging gap 23 extends to the bottom of the upper valve body 2 and is used to purge the outer peripheral wall of the rotating valve body 3.

[0029] Compared with the prior art, for the ash discharge valve provided in this embodiment, the rotating valve body 3 can rotate to block the lower opening of the upper valve body 2. By performing inflation and deflation operations on the inflatable sealing ring 4, an effective seal of the rotating valve body 3 against the upper valve body 2 is achieved, ensuring the sealing performance in the closed state of the ash discharge valve. The above structure can reduce the processing difficulty of the rotating valve body 3. The setting of the inflatable sealing ring 4 can not only achieve reliable sealing of the structure but also avoid wear of the rotating valve body 3 during the opening and closing process. Compared with a spherical valve plate, it can avoid serious erosion of the rotating valve body 3 by the medium after the ash discharge valve is opened, effectively extending the service life of the ash discharge valve.

[0030] In this embodiment, the outer peripheral wall of the above-mentioned rotating valve body 3 is a cylindrical surface structure. Compared with the structure of a spherical valve, the production and manufacture of the rotating valve body 3 are simpler. The setting of the inflatable sealing ring 4 can perform inflation and deflation operations according to the opening and closing conditions of the rotating valve body 3, so as to ensure a good sealing state when the rotating valve body 3 is closed, leaving a rotating gap between the outer peripheral wall of the rotating valve body 3 and the lower part of the upper valve body 2, avoiding wear caused by mutual friction between the two, and facilitating the extension of the service life of each component.

[0031] In a possible implementation, refer to Figures 1 to 8 , a mounting groove for installing the inflatable sealing ring 4 is provided at the bottom of the upper valve body 2. A pressing ring plate 6 is provided in the inner cavity of the inflatable sealing ring 4. A threaded member 7 penetrating through the upper valve body 2 is threadedly connected to the pressing ring plate 6. The threaded member 7 can drive the pressing ring plate 6 to move away from the rotating valve body 3, so that the inflatable sealing ring 4 is pressed against the bottom wall of the mounting groove.

[0032] In this embodiment, a pressing ring plate 6 is provided in the inner cavity of the inflatable sealing ring 4. The pressing ring plate 6 can move away from the rotating valve body 3 under the action of the threaded member 7. Then, the pressing ring plate 6 is used to squeeze the peripheral wall of the inflatable sealing ring 4, so that the peripheral wall of the inflatable sealing ring 4 abuts against the bottom wall of the mounting groove, facilitating the subsequent inflation operation of the inflatable sealing ring 4 and ensuring the sealing performance of the inflatable sealing ring 4.

[0033] The abutment and separation of the above inflatable sealing ring 4 and the rotating valve body 3 not only ensure the sealing performance of the structure, but also avoid the friction of the inflatable sealing ring 4 during the rotation of the rotating valve body 3, improve the service life of the inflatable sealing ring 4, and realize sealing without the need for the rotating valve body 3 to be closely fitted with the lower arc surface 25, which helps to reduce the wear between the two.

[0034] In some embodiments, refer to Figures 1 to 8 , a plurality of threaded members 7 are circumferentially spaced along the upper valve body 2 and are respectively in threaded cooperation with the pressing ring plate 6. At least one threaded member 7 is provided with an inflation channel 71 communicating with the inflatable sealing ring 4.

[0035] In this embodiment, the pressing ring plate 6 can be used to press different positions of the inflatable sealing ring 4 by using a plurality of threaded members 7 to be threadedly connected to different positions of the circumferential direction of the pressing ring plate 6, ensuring the sealing performance of the inflatable sealing ring 4. An axially penetrating inflation channel 71 is provided on one of the threaded members 7 for filling gas into the inner cavity of the inflatable sealing ring 4, so that the inflatable sealing ring 4 is inflated and expanded to form an effect of pressing against the inner wall of the mounting groove and the outer peripheral wall of the rotating valve body 3.

[0036] In a possible implementation, refer to Figures 1 to 8 , the horizontal projections of the inflatable sealing ring 4 and the pressing ring plate 6 are both rectangular. The rotating valve body 3 has an outer arc surface that extends in an arc around its central axis. The inflatable sealing ring 4 and the pressing ring plate 6 are arched upward along the outer arc surface of the rotating valve body 3.

[0037] In this embodiment, the outer arc surface of the rotating valve body 3 is a cylindrical surface structure. The inflatable sealing ring 4 and the pressing ring plate 6 adopt shapes that can match the rotating valve body 3 to ensure the abutting and sealing effect on the outer peripheral position of the rotating valve body 3. The arched amplitude of the inflatable sealing ring 4 and the pressing ring plate 6 is consistent with the radian of the outer peripheral wall of the rotating valve body 3, so that the inflatable sealing ring 4 can effectively seal the gap between the upper valve body 2 and the rotating valve body 3.

[0038] In a possible implementation manner, please refer to Figures 1 to 8 , on the end face of the inflatable sealing ring 4 adjacent to the rotating valve body 3, there are convex sealing ribs 41 provided. The sealing ribs 41 extend along the direction of the inflatable sealing ring 4 and are used to press against the outer peripheral wall of the rotating valve body 3.

[0039] In this embodiment, the setting of the sealing ribs 41 can enhance the sealing performance between the inflatable sealing ring 4 and the rotating valve body 3, form multiple seals from the outer periphery to the center position of the rotating valve body 3, and improve the sealing performance.

[0040] In a possible implementation manner, please refer to Figures 1 to 8 , the upper valve body 2 includes a sleeve 21 and a wear-resistant sleeve 22. The sleeve 21 is sleeved on the outer periphery of the wear-resistant sleeve 22. The purge port 24 is provided on the sleeve 21. A purge gap 23 is formed between the sleeve 21 and the wear-resistant sleeve 22, and the purge gap 23 extends along the circumferential direction of the upper valve body 2.

[0041] In this embodiment, the upper valve body 2 adopts a structure combining the sleeve 21 and the wear-resistant sleeve 22. The wear-resistant sleeve 22 is made of a high-hardness material and has good wear resistance, which can effectively enhance the wear resistance of the upper valve body 2 and extend the service life of the ash discharge valve.

[0042] By introducing gas into the space between the upper valve body 2 and the rotating valve body 3 through the purge gap 23 provided between the sleeve 21 and the wear-resistant sleeve 22, an effective purge of the outer peripheral wall of the rotating valve body 3 is formed, avoiding structural wear caused by dust particles adhering to the outer peripheral wall of the rotating valve body 3.

[0043] In some embodiments, please refer to Figures 1 to 8 , on the inner peripheral wall of the sleeve 21, there is a circumferentially extending inner groove 26. The inner groove 26 penetrates the sleeve 21 downward. The bottom wall and the side wall of the inner groove 26 and the outer peripheral wall of the wear-resistant sleeve 22 enclose the purge gap 23.

[0044] In this embodiment, by providing the inner groove 26 on the inner peripheral wall of the sleeve 21, and using the bottom wall and the side wall of the inner groove 26 and the outer peripheral wall of the rotating valve body 3 to enclose the purge gap 23, the above-mentioned purge gap 23 serves as the air flow channel for the monomer supplied by the subsequent purge port 24, realizing the effective removal of dust particles on the peripheral wall of the rotating valve body 3.

[0045] In one possible implementation, see Figures 1 to 8 The upper valve body 2 has a lower arc surface 25 that slides with the rotating valve body 3. The inflatable sealing ring 4 is embedded in the lower arc surface 25. A scraper 5 is provided on one side edge of the rotating valve body 3. The scraper 5 can rotate synchronously with the rotating valve body 3 to clean the lower arc surface 25.

[0046] In this embodiment, when the rotary valve body 3 is closed, it rotates counterclockwise to seal against the lower opening of the upper valve body 2. A high-hardness scraper 5 is provided on the edge of the rotary valve body 3. During the closing process of the rotary valve body 3, the scraper 5 can first clean the lower curved surface 25 of the upper valve body 2 to cut away particles such as dust-laden media, thereby reducing wear on the rotary valve body 3 itself.

[0047] Specifically, when the rotary valve body 3 is closed, the scraper 5 first contacts the upper valve body 2 and scrapes off impurities on the lower arc surface 25 before the rotary valve body 3 contacts the upper valve body 2 to avoid wear on the outer peripheral wall of the rotary valve body 3.

[0048] For some examples, see Figures 1 to 8 The rotating valve body 3 includes a central shaft 31, a connecting plate 32 and an arc-shaped valve plate 33. The arc-shaped valve plate 33 is connected to the central shaft 31 through several connecting plates 32. The connecting plate 32 extends radially along the central shaft 31. The scraper 5 is connected to one side edge of the arc-shaped valve plate 33.

[0049] In this embodiment, a central shaft 31 extends through the sidewall of the lower valve body 1 and can be rotated by a driver, thereby effectively sealing the lower opening of the upper valve body 2 with the curved valve plate 33, thereby completing the opening and closing operation of the ash discharge valve. A connecting plate 32 is provided on the outer periphery of the central shaft 31. The curved valve plate 33 is connected to the outer edge of the connecting plate 32 and can rotate synchronously with the central shaft 31 and the connecting plate 32 to open or close the lower opening of the upper valve body 2.

[0050] For some examples, see Figures 1 to 8 A mounting groove 34 for mounting a scraper 5 is provided on the side of the arc-shaped valve plate 33 . The scraper 5 is connected to the mounting groove 34 through a connecting member 51 . The scraper 5 has a scraping surface 52 connected to the outer peripheral wall of the arc-shaped valve plate 33 .

[0051] In this embodiment, the scraper 5 is made of a high-hardness material, providing excellent scraping performance. The scraper 5 is mounted within the mounting groove 34 via a connector 51. The scraping surface 52 smoothly transitions with the outer peripheral wall of the curved valve plate 33. The outer edge of the scraper 5 forms a cutting edge. During the rotation of the rotary valve body 3, the scraper 5 contacts the lower curved surface 25 of the upper valve body 2 before the curved valve plate 33, promptly scraping away impurities on the lower curved surface 25.

[0052] The rotating valve body 3 of the above-mentioned ash unloading valve can be rotated to seal the lower mouth of the upper valve body 2. The rotating valve body 3 can effectively seal the upper valve body 2 by inflating and deflating the inflatable sealing ring 4, thereby ensuring the sealing of the ash unloading valve in the closed state. The above-mentioned structure can reduce the processing difficulty of the rotating valve body 3. The setting of the inflatable sealing ring 4 can not only achieve reliable sealing of the structure, but also avoid wear of the rotating valve body 3 during the opening and closing process. Compared with the spherical valve plate, it can avoid the medium from causing serious erosion of the rotating valve body 3 after the ash unloading valve is opened, thereby effectively extending the service life of the ash unloading valve.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Ash discharge valve, characterized in that, It includes a lower valve body (1), an upper valve body (2), a rotating valve body (3) and an inflatable sealing ring (4). The lower valve body (1) is used to be connected to the main pipeline. The upper valve body (2) is connected to the upper end of the lower valve body (1) and is connected to the ash discharge pipe. The rotating valve body (3) is rotatably connected inside the lower valve body (1) and is used to block the lower opening of the upper valve body (2). The inflatable sealing ring (4) is embedded on the upper valve body (2) and is used to abut and seal against the outer wall of the rotating valve body (3). A purge port (24) and a purge gap (23) communicating with the purge port (24) are provided on the upper valve body (2). The purge gap (23) extends to the bottom of the upper valve body (2) and is used to purge the outer peripheral wall of the rotating valve body (3).

2. The ash discharge valve according to claim 1, wherein An embedding groove for installing the inflatable sealing ring (4) is provided at the bottom of the upper valve body (2). A pressing ring plate (6) is provided in the inner cavity of the inflatable sealing ring (4). A threaded member (7) penetrating through the upper valve body (2) and threadedly connected to the pressing ring plate (6) is provided on the upper valve body (2). The threaded member (7) can drive the pressing ring plate (6) to move away from the rotating valve body (3) side to make the inflatable sealing ring (4) press against the bottom wall of the embedding groove.

3. The ash discharge valve according to claim 2, characterized in that, A plurality of the threaded members (7) are provided at intervals along the circumferential direction of the upper valve body (2) and are respectively in threaded cooperation with the pressing ring plate (6). At least one of the threaded members (7) is provided with an inflation channel (71) communicating with the inflatable sealing ring (4).

4. The ash discharge valve according to claim 2, characterized in that, The horizontal projections of the inflatable sealing ring (4) and the pressing ring plate (6) are both rectangular. The rotating valve body (3) has an outer arc surface extending in an arc around its central axis. The inflatable sealing ring (4) and the pressing ring plate (6) arch upward along the outer arc surface of the rotating valve body (3).

5. The ash discharge valve according to claim 4, wherein, Sealing ridges (41) protruding are provided on the end face of the inflatable sealing ring (4) adjacent to the rotating valve body (3). The sealing ridges (41) extend along the direction of the inflatable sealing ring (4) and are used to press against the outer peripheral wall of the rotating valve body (3).

6. The ash discharge valve according to claim 1, wherein The upper valve body (2) includes a sleeve (21) and a wear-resistant sleeve (22). The sleeve (21) is sleeved on the outer periphery of the wear-resistant sleeve (22). The purge port (24) is provided on the sleeve (21). A purge gap (23) is formed between the sleeve (21) and the wear-resistant sleeve (22). The purge gap (23) extends along the circumferential direction of the upper valve body (2).

7. The ash discharge valve according to claim 6, characterized in that, A circumferentially extending inner groove (26) is provided on the inner peripheral wall of the sleeve (21). The inner groove (26) penetrates through the sleeve (21) downward. The bottom wall and the side wall of the inner groove (26) and the outer peripheral wall of the wear-resistant sleeve (22) enclose the purge gap (23).

8. The ash discharge valve according to claim 1, wherein The upper valve body (2) has a lower arc surface (25) that slidably cooperates with the rotating valve body (3). The inflatable sealing ring (4) is embedded on the lower arc surface (25). A scraper (5) is provided on one edge of the rotating valve body (3), and the scraper (5) can rotate synchronously with the rotating valve body (3) to clean the lower arc surface (25).

9. The ash discharge valve according to claim 8, characterized in that, The rotating valve body (3) includes a central shaft (31), a connecting plate (32), and an arc-shaped valve plate (33). The arc-shaped valve plate (33) is connected to the central shaft (31) through a plurality of connecting plates (32). The connecting plates (32) extend along the radial direction of the central shaft (31), and the scraper (5) is connected to one edge of the arc-shaped valve plate (33).

10. The ash discharge valve according to claim 9, characterized in that, An installation groove (34) for installing the scraper (5) is provided on the side of the arc-shaped valve plate (33). The scraper (5) is connected to the installation groove (34) through a connecting member (51). The scraper (5) has a scraping surface (52) that is in contact with the outer peripheral wall of the arc-shaped valve plate (33).

Images