Smooth conveying ash discharging valve

Abstract

The utility model relates to a smooth transmission ash discharge valve which comprises a valve body, a valve rod, a scraper, a sealing device and a driving device, a valve plate sleeve is fixedly arranged on the periphery of the valve rod, a plurality of valve plates are arranged on the periphery of the valve plate sleeve at equal intervals, and the space between every two adjacent valve plates serves as a transmission space. Each conveying space is composed of a tangent plane tangent to the valve rod and inclined planes gradually expanded on the two transverse sides of the tangent plane, the scraper is a longitudinally-arranged thin-wall component and is opposite to the conveying space located at the lowest position, the upper side face of the scraper is consistent with the inner side wall of the conveying space in shape, and the valve body is provided with a via hole allowing the scraper to extend out of the valve body from the interior of the flow channel. The driving device is located outside the valve body and drives the scraper to longitudinally reciprocate, and the sealing device is located at the position, corresponding to the via hole, outside the valve body and prevents fly ash from leaking from the via hole. By adopting the scheme, the utility model provides the ash discharging valve capable of automatically cleaning internal cakes and smoothly conveying.

Description

Technical Field

[0001] The utility model relates to the field of garbage incineration equipment, in particular to a ash discharge valve with smooth transmission. Background Art

[0002] The waste incineration power plant collects domestic waste and incinerates it in a unified manner. It uses the heat from incineration to generate electricity while treating the waste gas generated by incineration in a unified manner, making rational use of resources while avoiding waste gas pollution. After the incineration of waste, a certain amount of fly ash will be generated, which will be captured by the flue gas purification equipment.

[0003] An ash discharge valve is often installed at the bottom of the flue gas purification equipment. The ash discharge valve includes a valve body. A flow channel is vertically arranged through the valve body. The upper end of the flow channel serves as a flow channel inlet, and the lower end serves as a flow channel outlet. An actuator motor is arranged at one longitudinal end of the valve body. The actuator motor drives a valve stem extending from the outside of the valve body to the inside of the flow channel along the longitudinal direction. A plurality of valve plates are equidistantly arranged on the outer circumference of the valve stem. The space between adjacent valve plates serves as a transmission space. When the actuator motor drives the valve stem to rotate, fly ash is successively transmitted from the flow channel inlet to the flow channel outlet through each transmission space, thereby ensuring smoothness of fly ash transmission.

[0004] However, the ash discharge valve of the above structure still has certain disadvantages, that is, after the fly ash transmission is completed, a small amount of fly ash will remain in the transmission space and form lumps at the corners of the transmission space (due to air moisture or material characteristics). This part of the lumps will not only occupy the transmission space, but will also gradually accumulate and grow larger during the subsequent transmission process, thereby affecting the transmission efficiency of the ash discharge valve. At the same time, this kind of lumps are not easy to observe, and it is also very inconvenient to disassemble the machine for cleaning. Summary of the invention

[0005] In view of the shortcomings of the prior art, the utility model aims to provide a ash discharge valve which can automatically clean internal agglomerates and smoothly transmit dust.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a valve body, wherein the valve body is vertically penetrated with a flow channel, the upper end of the flow channel serves as the flow channel inlet, and the lower end serves as the flow channel outlet, an actuator motor is disposed at one longitudinal end of the valve body, and the actuator motor drives a valve stem extending from the outside of the valve body into the flow channel in the longitudinal direction, a valve plate sleeve is fixedly disposed on the outer periphery of the valve stem, a plurality of valve plates are equidistantly disposed on the outer periphery of the valve plate sleeve, and the space between adjacent valve plates serves as a transmission space, characterized in that: it also includes a scraper, a sealing device and a driving device, the transmission space is composed of a section tangent to the valve stem and inclined surfaces gradually expanding on both sides of the section in the transverse direction, the scraper is a thin-walled component disposed longitudinally, the scraper is opposite to the transmission space located at the bottom, the upper side surface of the scraper is consistent with the shape of the inner side wall of the transmission space, the valve body is provided with a through hole for the scraper to extend from the flow channel to the outside of the valve body, the driving device is located outside the valve body and drives the scraper to move back and forth longitudinally, and the sealing device is located outside the valve body at a position corresponding to the through hole and prevents fly ash from leaking from the through hole.

[0007] By adopting the above technical solution, a scraper which moves longitudinally and reciprocatingly under the drive of a driving device is additionally provided. When the flue gas purification equipment is in a non-operating state, the scraper scrapes the inner wall of each transmission space in turn, and peels off the agglomerates formed by fly ash from the inner wall of the transmission space, thereby realizing the function of automatically cleaning the agglomerates and avoiding the inconvenience caused by disassembling the machine for cleaning. At the same time, in conjunction with the sealing device outside the valve body, fly ash is prevented from leaking from the through hole and polluting the surrounding environment. In addition, the shape of the transmission space is changed, and the arc surface coaxial with the valve stem of the traditional transmission space is adjusted to a tangent surface tangent to the valve stem, so that the scraper is easier to scrape and the scraping effect is improved.

[0008] The utility model is further configured as follows: a bearing seat rotatably matched with the valve stem is arranged at the other end of the valve body relative to the actuator motor, the driving device comprises a scraper cylinder fixed to the outside of the valve body and located above the bearing seat, the scraper cylinder is provided with a cylinder shaft longitudinally driven in a direction opposite to the valve body, and the cylinder shaft is fixedly provided with a linkage plate extending downward and used to fix the scraper.

[0009] By adopting the above technical solution, the driving force of the scraper cylinder located above the bearing seat is transmitted to the scraper located below the bearing seat by the linkage plate, and the space on the upper and lower sides of the bearing seat is reasonably utilized to make the structure more compact.

[0010] The utility model is further configured as follows: the sealing device comprises a sealing seat fixed to the outer side of the valve body, the sealing seat is provided with a positive pressure sealing cavity connected to the through hole, the other end of the sealing seat relative to the valve body is provided with a guide hole for guiding the longitudinal movement of the scraper, and the sealing seat is provided with an air inlet pipe for introducing dry gas into the positive pressure sealing cavity.

[0011] By adopting the above technical solution, dry gas is introduced into the positive pressure sealing chamber in the sealing seat through the air inlet pipe, forming a positive pressure environment with an air pressure greater than that of the transmission space. Fly ash will not flow into the positive pressure sealing chamber, nor will it flow to the outside through the positive pressure sealing chamber, thereby ensuring the sealing effect. At the same time, the guide hole is not only used for the scraper to pass through, but also serves as a guide structure for the scraper, making the movement of the scraper more stable.

[0012] The utility model is further configured as follows: a maintenance port and a detachable sealing plate that closes the maintenance port are provided below the sealing seat, a scraper groove is provided on the outer side of the valve body below the through hole, and a scraper strip is provided in the scraper groove, which is against the lower side of the scraper plate and fixed to the scraper groove by bolts.

[0013] By adopting the above technical solution, when the scraper moves out of the valve body, the scraper bar can scrape off the fly ash attached to the scraper and return it to the transmission device, thereby preventing the fly ash from leaking with the scraper. At the same time, the maintenance port added under the sealing seat makes it easier for the staff to replace the scraper bar, so that the scraping effect of the scraper bar can be maintained for a long time. In addition, the scraper bar squeezes the scraper upward, which can also improve the stability of the reciprocating movement of the scraper.

[0014] The utility model is further configured as follows: a scraping blade is arranged at the end of the scraper facing the valve body.

[0015] By adopting the above technical solution, the scraping blade makes the scraper have less resistance when peeling off the lumps, and the cleaning is more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a specific implementation of the utility model;

[0017] Figure 2 It is a cross-sectional view of a specific implementation mode of the utility model;

[0018] Figure 3 for Figure 2 A-direction sectional view;

[0019] Figure 4 for Figure 2 Enlarged view of middle B;

[0020] Figure 5 for Figure 2 Enlarged view of C in the middle. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] like Figure 1 — Figure 5 As shown, the utility model discloses a ash discharge valve with smooth transmission, including a valve body 1, a flow channel 11 is vertically penetrated by the valve body 1, the upper end of the flow channel 11 is used as a flow channel inlet 111, and the lower end is used as a flow channel outlet 112, an actuator motor 2 is provided at one longitudinal end of the valve body 1, and the actuator motor 2 is longitudinally driven to provide a valve stem 3 extending from the outside of the valve body 1 to the inside of the flow channel 11, a valve plate sleeve 31 is fixedly provided on the outer periphery of the valve stem 3, a plurality of valve plates 311 are equidistantly provided on the outer periphery of the valve plate sleeve 31, and the space between adjacent valve plates 311 is used as a transmission space 32, and also includes a scraper 4, a sealing device and a driving device, the transmission space 32 is composed of a section 321 tangent to the valve stem 3 and inclined surfaces 322 gradually expanding on both sides of the section 321, the scraper 4 is a thin-walled component arranged longitudinally, generally made of metal, the scraper 4 is opposite to the transmission space 32 located at the bottom, and the upper side surface of the scraper 4 is consistent in shape with the inner side wall of the transmission space 32 The valve body 1 is provided with a through hole 12 for the scraper 4 to extend from the flow channel 11 to the outside of the valve body 1. The driving device is located outside the valve body 1 and drives the scraper 4 to move back and forth longitudinally. The sealing device is located outside the valve body 1 at a position corresponding to the through hole 12 and prevents fly ash from leaking from the through hole 12. A scraper 4 is additionally provided to move back and forth longitudinally under the drive of the driving device. When the flue gas purification equipment is in a non-operating state, the scraper 4 scrapes the inner wall of each transmission space 32 in turn, and the agglomerates formed by the fly ash are peeled off from the inner wall of the transmission space 32, so as to realize the function of automatically cleaning the agglomerates and avoid the inconvenience caused by disassembling the machine for cleaning. At the same time, in cooperation with the sealing device outside the valve body 1, the fly ash is prevented from leaking from the through hole 12 and polluting the surrounding environment. In addition, the shape of the transmission space 32 is changed, and the arc surface coaxial with the valve stem 3 of the traditional transmission space 32 is adjusted to the tangent surface 321 tangent to the valve stem 3, so that the scraper 4 is easier to scrape and the scraping effect is improved.

[0024] A bearing seat 13 rotatably matched with the valve stem 3 is arranged at the other end of the valve body 1 opposite to the actuator motor 2. The driving device includes a scraper cylinder 5 fixed to the outer side of the valve body 1 and located above the bearing seat 13. The scraper cylinder 5 is provided with a cylinder shaft 51 for longitudinal driving in the direction opposite to the valve body 1. The cylinder shaft 51 is fixed with a linkage plate 52 extending downward and used to fix the scraper 4. The linkage plate 52 transmits the driving force of the scraper cylinder 5 located above the bearing seat 13 to the scraper 4 located below the bearing seat 13, thereby rationally utilizing the space on the upper and lower sides of the bearing seat 13 to make the structure more compact.

[0025] The sealing device includes a sealing seat 6 fixed to the outer side of the valve body 1, the sealing seat 6 is provided with a positive pressure sealing cavity 61 connected with the through hole 12, the other end of the sealing seat 6 relative to the valve body 1 is provided with a guide hole 62 for guiding the longitudinal movement of the scraper 4, and the sealing seat 6 is provided with an air inlet pipe 63 for introducing dry gas into the positive pressure sealing cavity 61 (the gas will leak from each gap and will not cause the air pressure in the positive pressure sealing cavity 61 to be too high). Generally, inert gas is introduced, and dry gas is introduced into the positive pressure sealing cavity 61 in the sealing seat 6 through the air inlet pipe 63, so as to form a positive pressure environment with an air pressure greater than that of the transmission space 32, and fly ash will not flow into the positive pressure sealing cavity 61, nor will it flow to the outside through the positive pressure sealing cavity 61, thereby ensuring the sealing effect. At the same time, the guide hole 62 is not only used for the scraper 4 to pass through, but also serves as a guiding structure for the scraper 4, so that the movement of the scraper 4 is more stable.

[0026] A maintenance port 64 and a detachable sealing plate 65 that closes the maintenance port 64 are provided below the sealing seat 6. A rubber sealing layer 651 is provided on the upper side of the sealing plate 65 and is fixed to the sealing seat 6 by bolts. A scraper groove 14 is provided on the outer side of the valve body 1 below the through hole 12. A scraper bar 15 is provided in the scraper groove 14 and is abutted against the lower side of the scraper 4 and fixed to the scraper groove 14 by bolts. The scraper bar 15 is generally made of hard rubber. When the scraper 4 moves out of the valve body 1, the scraper bar can scrape off the fly ash attached to the scraper 4 and return it to the transmission device to prevent the fly ash from leaking with the scraper 4. At the same time, the maintenance port 64 added below the sealing seat 6 makes it easier for the staff to replace the scraper bar, so that the scraping effect of the scraper bar can be maintained for a long time. In addition, the scraper bar 15 squeezes the scraper 4 upward, which can also improve the stability of the reciprocating movement of the scraper 4.

[0027] The end of the scraper 4 facing the valve body 1 is provided with a scraping blade 41 , and the scraping blade 41 makes the scraper 4 have less resistance when peeling off the agglomerates, and the cleaning is more comprehensive.

Claims

1. A ash discharge valve for smooth transmission, comprising a valve body, wherein a flow channel is vertically penetrated through the valve body, the upper end of the flow channel serves as the flow channel inlet, and the lower end serves as the flow channel outlet, an actuator motor is disposed at one longitudinal end of the valve body, and the actuator motor drives a valve stem extending from the valve body to the flow channel in the longitudinal direction, a valve plate sleeve is fixedly disposed on the periphery of the valve stem, a plurality of valve plates are equidistantly disposed on the periphery of the valve plate sleeve, and the space between adjacent valve plates serves as a transmission space, characterized in that: It also includes a scraper, a sealing device and a driving device. The transmission space is composed of a section tangent to the valve stem and gradually expanding inclined surfaces on both sides of the section. The scraper is a thin-walled component arranged longitudinally. The scraper is opposite to the transmission space located at the bottom. The upper side of the scraper is consistent with the shape of the inner wall of the transmission space. The valve body is provided with a through hole for the scraper to extend from the flow channel to the outside of the valve body. The driving device is located outside the valve body and drives the scraper to move back and forth longitudinally. The sealing device is located outside the valve body at a position corresponding to the through hole and prevents fly ash from leaking from the through hole.

2. The ash discharge valve with smooth transmission according to claim 1 is characterized in that: The other end of the valve body relative to the actuator motor is provided with a bearing seat that rotates with the valve stem. The driving device includes a scraper cylinder fixed to the outside of the valve body and located above the bearing seat. The scraper cylinder is provided with a cylinder shaft along the longitudinal drive in the direction opposite to the valve body. The cylinder shaft is fixed with a linkage plate that extends downward and is used to fix the scraper.

3. The ash discharge valve with smooth transmission according to claim 1 is characterized in that: The sealing device includes a sealing seat fixed to the outside of the valve body, the sealing seat is provided with a positive pressure sealing cavity connected to the through hole, the other end of the sealing seat relative to the valve body is provided with a guide hole for guiding the longitudinal movement of the scraper, and the sealing seat is provided with an air inlet pipe for introducing dry gas into the positive pressure sealing cavity.

4. The ash discharge valve for smooth transmission according to claim 3 is characterized in that: A maintenance port and a detachable sealing plate that closes the maintenance port are provided below the sealing seat, a scraper groove is provided on the outside of the valve body below the through hole, and a scraper strip that abuts against the lower side of the scraper and is fixed to the scraper groove by bolts is provided in the scraper groove.

5. The ash discharge valve with smooth transmission according to claim 1, characterized in that: The end of the scraper facing the valve body is provided with a scraping edge.

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