Solid material conveying pipeline and gate valve thereof

Abstract

The present invention discloses a solid material conveying pipeline and a gate valve thereof, and relates to the technical field of production tool manufacturing for solid material conveying. The gate valve comprises a valve plate and a valve body, the valve body comprises a valve plate cavity, the valve plate is arranged at the first valve cavity end of the valve plate cavity and can move toward the second valve cavity end of the valve plate cavity to cut off the valve plate cavity, and the second valve cavity end is provided with a gate valve cleaning mechanism connected to the valve plate cavity. The gate valve cleaning mechanism comprises a cleaning bin for collecting solid materials flowing to the second valve cavity end, and the cleaning bin is connected to the second valve cavity end through a cleaning bin connecting pipe. The cleaning bin is provided with a bottom discharge port and an openable side hand hole. The gate valve cleaning mechanism also comprises an airflow purge member for purging the valve plate cavity. The gate valve and solid material conveying pipeline of the present invention can ensure the long-term and stable operation of the gate valve, and effectively improve production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing production tools for conveying solid materials, and in particular to a solid material conveying pipeline and a gate valve thereof. Background Art

[0002] The commonly used equipment for transporting and cutting solid materials is the gate valve. According to the different driving forms, the gate valve is divided into electric gate valve and manual gate valve, but the working principle of the valve body is basically the same or similar. Of course, the electric gate valve may have some interlocking and control functions. Since solid materials, especially some fragile solid materials or powders such as coal powder, ceramic particles, liquefied residues, etc., will inevitably have a certain amount or a large amount of dust during the transportation process, and these dusts usually pose a great threat to our equipment, it is particularly important to reduce or reduce the damage to the equipment caused by dust or to ensure the normal operation of the equipment in a certain dusty harsh environment. Summary of the invention

[0003] The purpose of the present invention is to provide a novel solid material conveying pipeline and a gate valve thereof, wherein the gate valve can ensure long-term stable operation of the gate valve and effectively improve production efficiency.

[0004] In order to achieve the above object, the present invention provides a gate valve for a solid material conveying pipeline, the gate valve comprising:

[0005] valve plate; and

[0006] The valve body comprises a valve plate cavity, wherein the valve plate is arranged at a first valve cavity end of the valve plate cavity and can move toward a second valve cavity end of the valve plate cavity to cut off the valve plate cavity;

[0007] Wherein, the second valve cavity end is provided with a plug valve cleaning mechanism connected to the valve plate cavity.

[0008] In some embodiments, the gate valve cleaning mechanism may include a cleaning bin for collecting solid materials flowing toward the second valve cavity end, and the cleaning bin is connected to the valve plate cavity through a cleaning bin connecting pipe.

[0009] In some embodiments, the cleaning bin may be provided with a bottom discharge port.

[0010] In some embodiments, the cleaning bin may be provided with an openable side hand hole.

[0011] In some embodiments, the gate valve cleaning mechanism may further include an air flow purge member for purging the valve plate cavity.

[0012] In some embodiments, the airflow purge member may be a purge pipe penetrating through a pipe wall of the dust cleaning bin connecting pipe, and the purge pipe extends toward the valve plate cavity.

[0013] In some embodiments, a pivotable movable spray head may be provided at the end of the purge pipe.

[0014] In some embodiments, the purge medium of the air flow purge member may be an inert gas.

[0015] In some embodiments, the first valve cavity end may be provided with a valve plate driving mechanism for driving the valve plate to move, and the valve plate driving mechanism includes:

[0016] A screw nut mechanism, connected to and driving the valve plate to move;

[0017] A hand wheel is used to rotationally drive the screw nut mechanism.

[0018] Correspondingly, the present invention also provides a solid material conveying pipeline, which includes the above-mentioned gate valve.

[0019] The valve plate of the gate valve of the present invention is arranged at the first valve cavity end of the valve body cavity and can move toward the second valve cavity end of the valve plate cavity to cut off the valve plate cavity, thereby cutting off solid material, wherein the second valve cavity end is provided with a gate valve cleaning mechanism connected to the valve plate cavity. In this way, when the valve plate moves toward the second valve cavity end to cut off the valve plate cavity, the valve plate can, while moving and cutting the material itself, force the solid powder accumulated in the valve plate cavity at the front end of the valve plate and between the valve plate and the valve body to be pushed to the gate valve cleaning mechanism for cleaning, effectively solving the problem of the gate valve failing due to frequent use due to solid powder, thereby ensuring the long-term stable operation of the gate valve and greatly improving the production efficiency; in addition, the valve plate can remove the solid powder in time during each movement and cutting action of itself, and the cleaning effect is good.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 A schematic structural diagram of a gate valve according to a specific embodiment of the present invention is shown;

[0023] Figure 2 for Figure 1 Top view of the .

[0024] Description of Reference Numerals

[0025] 1 Valve plate 2 Valve body

[0026] 21 Valve plate cavity 211 First valve cavity end

[0027] 212 Second valve chamber end 3 Dust removal bin

[0028] 31 Bottom discharge port 32 Side hand hole

[0029] 4 Dust removal bin connection pipe 5 Purge pipe

[0030] 6 Handwheel 7 Screw

[0031] 8 Nut 9 Delivery pipe

[0032] 91 Conveying pipe inlet 92 Conveying pipe outlet DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] The following describes the gate valve and the solid material conveying pipeline according to the present invention with reference to the accompanying drawings. The gate valve has a good cleaning effect, can ensure the long-term stable operation of the gate valve, and effectively improves the production efficiency.

[0035] See also Figure 1 and Figure 2 A gate valve for a solid material conveying pipeline, the gate valve comprises a valve plate 1 and a valve body 2, the valve body 2 comprises a valve plate cavity 21, the valve plate 1 is arranged at a first valve cavity end 211 of the valve plate cavity 21 and can move toward a second valve cavity end 212 of the valve plate cavity 21 to cut off the valve plate cavity 21. When the valve plate 1 moves from the first valve cavity end 211 toward the second valve cavity end 212 to cut off the valve plate cavity 21, the valve plate 1 cuts off the solid material in the solid material conveying pipeline; when the valve plate 1 moves from the second valve cavity end 212 toward the first valve cavity end 211, the valve plate 1 can resume the conveying of the solid material in the solid material conveying pipeline. Among them, the second valve cavity end 212 is provided with a gate valve cleaning mechanism connected to the valve plate cavity 21.

[0036] In the process of cutting off solid materials, especially pulverized coal, due to the presence of a large amount of coal powder, these coal powder dusts will stick to the valve plate of the gate valve, or fill into the gap between the valve plate and the valve body of the gate valve, making it impossible for the valve plate of the gate valve to be inserted into the gate valve normally, causing the gate valve to be unable to work normally due to lax closure, or causing the entire device to stop and unable to achieve continuous production. At present, the dust accumulated in the gate valve is usually cleaned when the device is stopped to solve the problem of dust interference, which undoubtedly has a great impact on the operation of the device and seriously affects the production efficiency. In order to solve this pain point and realize the continuous production of the production line, the inventor discovered through continuous thinking and innovation that timely and effective removal of the dust generated during the cutting process is an effective means to ensure the long-term stable operation of the gate valve. Therefore, it is necessary to improve the gate valve to increase the online cleaning function of the gate valve, and the online cleaning function needs to meet the cleaning requirements of timely and effective removal.

[0037] The second valve cavity end 212 of the gate valve of the present invention is provided with a gate valve cleaning mechanism, and the gate valve cleaning mechanism is connected to the valve plate cavity 21. In this way, when the valve plate 1 moves toward the second valve cavity end 212 to cut off the valve plate cavity 21, the valve plate 1 can force the solid powder accumulated in the front end of the valve plate 1 and the valve plate cavity 21 between the valve plate 1 and the valve body 2 to be pushed to the gate valve cleaning mechanism for removal while moving and cutting the material. This effectively solves the problem of the gate valve failing due to frequent use due to solid powder, thereby ensuring the long-term stable operation of the gate valve and greatly improving production efficiency. In addition, the valve plate 1 can remove the solid powder in time in each movement and cutting action of itself, and the cleaning effect is good. Among them, the front end of the valve plate 1 is the end of the valve plate 1 close to the second valve cavity end 212. The shape and installation structure of the gate valve cleaning mechanism can be varied. For example, the gate valve cleaning mechanism can be directly installed on the second valve cavity end 212, or can be installed on the second valve cavity end 212 through an intermediate component such as an intermediate connecting pipe. The shape of the gate valve cleaning mechanism can be square, round or irregular, etc., but the present invention is not limited to this.

[0038] Alternatively, see Figure 1 and Figure 2 As shown, the ash cleaning mechanism of the plug valve may include an ash cleaning bin 3 for collecting solid materials flowing to the second valve cavity end 212, and the ash cleaning bin 3 is connected to the valve plate cavity 21 through the ash cleaning bin connecting pipe 4. The conveying pipe 9 for conveying solid materials is respectively connected to the valve plate cavity 21 and includes a conveying pipe feed port 91 and a conveying pipe discharge port 92. During the material conveying process, the solid materials pass through the conveying pipe feed port 91 and the valve plate cavity 21 in sequence and are discharged through the conveying pipe discharge port 92 to enter the downstream equipment; during the solid material cutting process, the valve plate 1 moves from the first valve cavity end 211 toward the second valve cavity end 212 to cut off the valve plate cavity 21 and cut off the solid materials between the conveying pipe feed port 91 and the conveying pipe discharge port 92.

[0039] Due to the electrostatic effect of powder, a certain amount of solid powder will inevitably accumulate at the front end of the valve plate 1 and the valve plate cavity 21 between the valve plate 1 and the valve body 2 during long-term operation. If it cannot be removed in time and effectively, along with the extension of the operation time and the multiple opening and closing actions of the gate valve, the valve plate cavity 21 between the valve plate 1 and the valve body 2 will eventually be slowly filled with powder, causing the valve plate 1 of the gate valve to be unable to close normally and lose the function of the gate valve. Therefore, the cleaning bin 3 of the present invention is set at the second valve cavity end 212. When the valve plate 1 moves toward the second valve cavity end 212 to cut the material, the solid powder accumulated in the front end of the valve plate 1 and the valve plate cavity 21 between the valve plate 1 and the valve body 2 is forced to be pushed into the cleaning bin 3 through the cleaning bin connecting pipe 4, thereby timely and effectively removing the solid powder, ensuring the long-term stable operation of the gate valve, significantly increasing the service life of the gate valve and increasing the reliability of the device operation. Herein, “solid materials flowing toward the second valve cavity end 212 ” refers to solid materials flowing or passing through the second valve cavity end 212 , that is, solid powders pushed toward the second valve cavity end 212 .

[0040] In some embodiments, see Figure 1 and Figure 2 As shown, the ash cleaning bin 3 may be provided with a bottom discharge port 31, so that the solid materials pushed into the ash cleaning bin 3 can be discharged to the bottom discharge port 31 under the action of gravity. The bottom discharge port 31 may be set to a closed state and opened regularly for cleaning, or the bottom discharge port 31 may be connected to the solid material conveying pipeline downstream of the gate valve, so that the solid materials pushed into the ash cleaning bin 3 can be directly discharged to the solid material conveying pipeline downstream of the gate valve without regular cleaning.

[0041] In some embodiments, see Figure 1 and Figure 2 As shown, the dust cleaning bin 3 may be provided with an openable side hand hole 32, so that the dust cleaning bin 3 can be cleaned and maintained by opening the side hand hole 32 or can be conveniently maintained without disassembly through the gate valve.

[0042] In some embodiments, the gate valve cleaning mechanism also includes an airflow purge member for purging the valve plate cavity 21. In this way, the airflow purge member can reversely blow the powder in the valve plate cavity 21 between the valve plate 1 and the valve body 2 of the gate valve to the conveying pipe 9 between the conveying pipe feed port 91 and the conveying pipe discharge port 92, so that the powder can be discharged along with the solid material, which can effectively reduce the discharge and cleaning times of the cleaning bin 3. In addition, the airflow purge member can reversely purge the valve plate 1 and the valve plate running track in the valve body 2, increase the smoothness of the contact surface between the valve plate 1 and the valve body, and improve the service life of the gate valve. Based on the nature of the powder itself, the powder is easy to accumulate into blocks. If it is only purged by the airflow purge member, it is difficult to effectively and thoroughly remove the powder. The present invention can effectively and timely remove the powder by combining the cleaning bin 3 and the airflow purge member arranged at the second valve cavity end 212, and the cleaning effect is good.

[0043] Further, see Figure 1 and Figure 2 As shown, the airflow purge member can be a purge pipe 5 that penetrates the pipe wall of the dust cleaning bin connecting pipe 4, and the purge pipe 5 extends toward the valve plate cavity 21. The purge pipeline of the purge pipe 5 is relatively simple, with low installation cost and convenient maintenance. In order to save air source, the purge pipe 5 can be purged only when the valve plate 1 moves from the second valve cavity end 212 toward the first valve cavity end 211. Among them, in addition to being a single purge pipe 5, the airflow purge member can also be other purge structures, such as a multi-tube purge member with multiple nozzles, etc., but the present invention is not limited thereto.

[0044] Furthermore, a pivotable movable nozzle (not shown) is provided at the end of the purge tube 5, so that the purge tube 5 drives the movable nozzle to rotate through the pivoting motion, performs multi-angle purge, and has a better cleaning effect. Among them, the movable nozzle can adopt a nozzle mechanism known to ordinary technicians in the field, and the specific structure and working principle of the movable nozzle are not repeated here. In addition, for the sake of safety and production requirements, the purge medium of the airflow purge member can be an inert gas, such as nitrogen.

[0045] In some embodiments, the first valve cavity end 211 is provided with a valve plate driving mechanism for driving the valve plate 1 to move. Figure 1 and Figure 2 As shown, the valve plate driving mechanism includes a screw nut mechanism and a handwheel 6. The screw nut mechanism is connected to and drives the valve plate 1 to move, and the handwheel 6 is used to rotate and drive the screw nut mechanism. The screw nut mechanism includes a screw 7 and a nut 8. The nut 8 is fixedly mounted on the first valve chamber end 211. The screw 7 is threadedly connected to the nut 8, and the two ends of the screw 7 are respectively connected to the valve plate 1 and the handwheel 6. By rotating the handwheel 6, the screw 7 can be driven to spiral forward or backward relative to the nut 8 to drive the valve plate 1 to move. Of course, in addition to being manually driven, the gate valve of the present invention can also be set to be pneumatically driven or electrically driven, etc., and the present invention is not limited to this.

[0046] Accordingly, the present invention also provides a solid material conveying pipeline, which includes the above-mentioned gate valve. The gate valve and the solid material conveying pipeline of the present invention have good cleaning effects, can ensure the long-term stable operation of the gate valve, and effectively improve production efficiency.

[0047] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A gate valve for a solid material conveying pipeline, characterized in that: The gate valve comprises: a valve plate (1); and A valve body (2) comprising a valve plate cavity (21), wherein the valve plate (1) is arranged at a first valve cavity end (211) of the valve plate cavity (21) and is movable toward a second valve cavity end (212) of the valve plate cavity (21) to cut off the valve plate cavity (21); The second valve cavity end (212) is provided with a plug valve cleaning mechanism connected to the valve plate cavity (21), the plug valve cleaning mechanism comprises a cleaning bin (3) for collecting solid materials flowing to the second valve cavity end (212) and an air flow purge component for purging the valve plate cavity (21), the cleaning bin (3) is connected to the valve plate cavity (21) via a cleaning bin connecting pipe (4), the air flow purge component is a purge pipe (5) penetrating the pipe wall of the cleaning bin connecting pipe (4), and the purge pipe (5) extends toward the valve plate cavity (21).

2. The gate valve according to claim 1, characterized in that: The dust removal bin (3) is provided with a bottom discharge port (31).

3. The gate valve according to claim 1, characterized in that: The dust cleaning bin (3) is provided with an openable side hand hole (32).

4. The gate valve according to claim 1, characterized in that: A pivotable movable spray head is provided at the end of the purge pipe (5).

5. The gate valve according to claim 1, characterized in that: The purge medium of the airflow purge member is an inert gas.

6. The gate valve according to claim 1, characterized in that: The first valve cavity end (211) is provided with a valve plate driving mechanism for driving the valve plate (1) to move, and the valve plate driving mechanism comprises: A screw-nut mechanism, connected to and driving the valve plate (1) to move; A hand wheel (6) is used to rotationally drive the screw nut mechanism.

7. A solid material conveying pipeline, characterized in that: The solid material conveying pipeline comprises a gate valve according to any one of claims 1 to 6.

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