Coal powder anti-blocking device and method

Abstract

The present application relates to the technical field of valve control technology, particularly relates to a coal powder anti-blocking device and method. It comprises a shell, an anti-blocking gate plate, the anti-blocking gate plate is arranged in the shell, one end of the anti-blocking gate plate is arranged outside the shell, and the other end of the anti-blocking gate plate is arranged in the shell, a sealing element, the sealing element is arranged at the lower end of the shell, and the sealing element is used for sealing the anti-blocking device, a valve seat, the valve seat is arranged at the lower end of the shell, and a bevel is arranged at the bottom of the valve seat. The present application is improved and designed, when the valve device is closed, if a small amount of coal powder is accumulated in the bottom sealing groove, it will exist in the bottom groove to play a sealing role, if a large amount of coal powder is accumulated, it can be extruded to the outlet through the channel and discharged, effectively improving the valve sealing performance and preventing the rod body of the anti-blocking gate plate from bending and deforming, prolonging the service life of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve control, in particular to a coal powder anti-blocking device and method. BACKGROUND

[0002] The coal powder gate valve is used for cutting off the flow of gas powder on the powder conveying pipeline from the outlet of the coal mill to the inlet of the burner. The coal powder gate valve has a circular cross section, so there is no bag-shaped dead angle after being connected with the pipeline, which can ensure the safety of the coal powder system. The product has the advantages of flexible opening and closing, good sealing, small occupation of pipeline space, etc.

[0003] However, in the prior art, the sealing groove at the bottom of the gate valve is exposed to coal powder when the gate valve is in an open state, which causes a certain amount of loose coal powder to accumulate in the sealing groove. With repeated opening and closing of the gate, the coal powder in the sealing groove cannot be discharged and, with the increase of coal powder in the sealing groove and the extrusion of the gate, the coal powder at the bottom of the sealing groove is extruded, which affects the closing of the gate and causes the screw rod to bend and the nut to wear, thereby causing the valve to leak and reducing the service life of the valve. Therefore, how to provide a coal powder anti-blocking device and method is a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0004] The purpose of the present application is to provide a coal powder anti-blocking device and method. The present application improves the design in view of the above-mentioned deficiencies. When the valve device is closed, a small amount of coal powder accumulated in the bottom sealing groove will exist in the bottom groove to play a sealing role, and a large amount of coal powder can be extruded to the outlet and discharged through the channel, effectively improving the sealing performance of the valve and preventing the bending deformation of the rod of the anti-blocking gate.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solution:

[0006] A coal powder anti-blocking device, comprising:

[0007] A housing;

[0008] An anti-blocking gate, which is arranged in the housing, one end of the anti-blocking gate being arranged outside the housing and the other end of the anti-blocking gate being arranged in the housing;

[0009] A sealing member arranged at the lower end of the housing, the sealing member being used for sealing the anti-blocking device;

[0010] A valve seat arranged at the lower end of the housing, and a beveled opening being formed at the bottom of the valve seat.

[0011] In some embodiments of the present application, the upper part of the shell is provided with a protruding fixed end;

[0012] The sealing element is provided with a groove, and the groove is fixedly connected with the protruding fixed end.

[0013] In some embodiments of the present application, the end of the anti-blocking gate plate inserted into the shell is arc-shaped, a plurality of round holes are formed in the inner part of the arc-shaped end of the anti-blocking gate plate, a channel is formed in the outlet direction of the anti-blocking device and communicates with the outlet of the anti-blocking device, and the round holes communicate with the channel.

[0014] In some embodiments of the present application, the arc-shaped end of the anti-blocking gate plate inserted into the shell is provided with a concave sealing end, and the concave sealing end is V-shaped.

[0015] The bottom end of the anti-blocking device is further provided with a protruding sealing end, and the protruding sealing end is V-shaped, and the concave sealing end is matched with the protruding sealing end.

[0016] In some embodiments of the present application, a micro-inclined port is further formed in the valve seat, and the micro-inclined port is used to seal the anti-blocking device when the end of the anti-blocking gate plate contacts the protruding sealing end.

[0017] In some embodiments of the present application, the sealing element is detachably connected with the shell.

[0018] In some embodiments of the present application, the channel includes a straight channel and a curved channel, the straight channel communicates with the curved channel, and the channel is used to extrude and discharge the pulverized coal through the straight channel and the curved channel according to the fluidity.

[0019] In some embodiments of the present application, the inclined port is 2.

[0020] In some embodiments of the present application, the angle between the inclined port and the anti-blocking gate plate is not greater than 45°.

[0021] In order to achieve the above-mentioned purpose, the present application also correspondingly provides a pulverized coal anti-blocking method applied in the pulverized coal anti-blocking device, which comprises the following steps:

[0022] The anti-blocking device is closed, and the anti-blocking gate plate contacts the protruding sealing end.

[0023] When the amount of the pulverized coal is small, the anti-blocking gate plate extrudes the pulverized coal, and the protruding sealing end and the concave sealing end seal the anti-blocking device.

[0024] When the coal powder is in a large amount, the anti-blocking gate plate extrudes the coal powder, and the coal powder is extruded and discharged through the straight channel and the curved channel according to the fluidity.

[0025] The coal powder anti-blocking device and method have the beneficial effect that, compared with the prior art, the coal powder anti-blocking device and method have the beneficial effect that:

[0026] The anti-blocking gate plate is provided with a plurality of circular holes in the inner portion of the arc-shaped one end, and the anti-blocking gate plate is provided with a channel communicated with the outlet of the anti-blocking device in the outlet direction of the anti-blocking device, and the circular holes are communicated with the channel. The arc-shaped anti-blocking gate plate is provided with a concave sealing end in the one end, and the bottom end of the anti-blocking device is provided with a protruding sealing end. When the valve device is closed, the concave sealing end cooperates with the protruding sealing end. If a small amount of coal powder is accumulated in the sealing groove at the bottom, the coal powder will exist in the groove at the bottom to play a sealing role. If a large amount of coal powder is accumulated, the coal powder can be extruded to the outlet through the channel and discharged. The sealing property of the valve is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of the coal powder anti-blocking device in the embodiment of the present application;

[0028] Figure 2 is a structural schematic view of the anti-blocking gate plate when the anti-blocking gate plate is closed in the embodiment of the present application;

[0029] Figure 3 is a structural schematic view of the anti-blocking gate plate when the anti-blocking gate plate is not closed in the embodiment of the present application;

[0030] Figure 4 is a structural schematic view of the arc-shaped one end of the anti-blocking gate plate in the embodiment of the present application;

[0031] Figure 5 is a structural schematic view of the channel structure in the embodiment of the present application;

[0032] Figure 6 is a flow chart of the coal powder anti-blocking method in the embodiment of the present application.

[0033] In the figure, 1 is an anti-blocking gate plate; 2 is a shell; 3 is a sealing element; 4 is a valve seat; 5 is an inclined opening; 6 is a curved channel; 7 is a straight channel; 8 is a protruding sealing end; and 9 is a concave sealing end. DETAILED DESCRIPTION

[0034] The specific embodiments of the present application are described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0035] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0037] In the description of the present application, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the prior art, the gate valve is used in the coal powder pipeline, and the bottom sealing groove is exposed to the coal powder when the gate valve is in the open state, which causes a certain amount of loose coal powder to accumulate in the bottom sealing groove. With the repeated opening and closing of the gate, the coal powder in the sealing groove cannot be discharged and with the increase of the coal powder in the sealing groove and the extrusion of the gate, the coal powder in the bottom sealing groove is extruded, which further affects the closing of the gate and causes the bending of the screw rod and the abrasion of the nut, thereby causing the medium leakage of the valve and reducing the service life of the valve.

[0039] Therefore, the present application provides a coal powder anti-blocking device and method, which is improved and designed according to the above-mentioned deficiencies. When the valve device is closed, a small amount of coal powder accumulated in the bottom sealing groove can exist in the bottom groove to play a sealing role, and a large amount of coal powder can be extruded to the outlet through the channel and discharged, effectively improving the sealing performance of the valve and preventing the bending deformation of the rod body of the gate.

[0040] Referring to Figure 1 The disclosed embodiment of the present application provides a coal powder anti-blocking device, which comprises:

[0041] a housing 2;

[0042] The anti-blocking gate plate 1 is arranged in the shell 2 and one end of the anti-blocking gate plate 1 is arranged outside the shell 2, and the other end of the anti-blocking gate plate 1 is arranged in the shell 2;

[0043] The sealing element 3 is arranged at the lower end of the shell 2 and is used for sealing the anti-blocking device.

[0044] The valve seat 4 is arranged at the lower end of the shell 2, and the bottom of the valve seat 4 is provided with a bevel 5.

[0045] In one embodiment of the present application, the upper end of the shell 2 is provided with a protruding fixing end;

[0046] The sealing element 3 is provided with a groove, and the groove is fixedly connected with the protruding fixing end.

[0047] In one embodiment of the present application, the one end of the anti-blocking gate plate 1 arranged in the shell 2 is in arc shape, the inside of the one end of the arc-shaped anti-blocking gate plate 1 is provided with a plurality of round holes, the anti-blocking gate plate 1 is provided with a channel communicated with the outlet of the anti-blocking device in the outlet direction of the anti-blocking device, and the round holes are communicated with the channel.

[0048] In one embodiment of the present application, the one end of the anti-blocking gate plate 1 arranged in the shell 2 is in arc shape, the inside of the one end of the arc-shaped anti-blocking gate plate 1 is provided with a plurality of round holes, the anti-blocking gate plate 1 is provided with a channel communicated with the outlet of the anti-blocking device in the outlet direction of the anti-blocking device, and the round holes are communicated with the channel.

[0049] The bottom end of the anti-blocking device is further provided with a protruding sealing end 8, and the protruding sealing end 8 is in V shape, and the concave sealing end 9 is matched with the protruding sealing end 8.

[0050] In one embodiment of the present application, the valve seat 4 is further provided with a micro bevel 5, and the micro bevel 5 is used for sealing the anti-blocking device when the one end of the anti-blocking gate plate 1 contacts with the protruding sealing end 8.

[0051] In one embodiment of the present application, the sealing element 3 is detachably connected with the shell 2.

[0052] In one embodiment of the present application, the channel includes a straight channel 7 and a bent channel 6, the straight channel 7 is communicated with the bent channel 6, and the channel is used for extruding and discharging the pulverized coal through the straight channel 7 and the bent channel 6 according to the fluidity.

[0053] In one embodiment of the present application, the bevel 5 is two.

[0054] In one embodiment of the present application, the angle between the bevel 5 and the anti-blocking gate plate 1 is not greater than 45°.

[0055] Referring to Figure 2As shown in the figure, it is a structural schematic diagram of the anti-blocking gate plate when it is closed, the bottom of the outlet valve seat is provided with an inclined opening, when the valve device is closed, a certain amount of loose coal powder will be accumulated in the sealing groove at the bottom, and the loose coal powder will be extruded with the closing of the anti-blocking gate plate, if a small amount of coal powder exists in the V-shaped groove at the bottom, it will play a sealing role, when there is more coal powder in the sealing groove, since the coal powder has a high temperature of 90 DEG C, the coal powder is in a dry state and will not have a sticking phenomenon, and has a certain fluidity, under the extrusion of the anti-blocking gate plate, it is extruded and discharged to the outlet through the straight channel and the curved channel.

[0056] Referring to Figure 3 As shown in the figure, it is a structural schematic diagram of the anti-blocking gate plate when it is closed, the bottom of the outlet valve seat is provided with an inclined opening, when the valve device is closed, a certain amount of loose coal powder will be accumulated in the sealing groove at the bottom, and the loose coal powder will be extruded with the closing of the anti-blocking gate plate, if a small amount of coal powder exists in the V-shaped groove at the bottom, it will play a sealing role, when there is more coal powder in the sealing groove, since the coal powder has a high temperature of 90 DEG C, the coal powder is in a dry state and will not have a sticking phenomenon, and has a certain fluidity, under the extrusion of the anti-blocking gate plate, it is extruded and discharged to the outlet through the straight channel and the curved channel.

[0057] Referring to Figure 4 As shown in the figure, it is a structural schematic diagram of the anti-blocking gate plate when it is closed, the bottom of the outlet valve seat is provided with an inclined opening, when the valve device is closed, a certain amount of loose coal powder will be accumulated in the sealing groove at the bottom, and the loose coal powder will be extruded with the closing of the anti-blocking gate plate, if a small amount of coal powder exists in the V-shaped groove at the bottom, it will play a sealing role, when there is more coal powder in the sealing groove, since the coal powder has a high temperature of 90 DEG C, the coal powder is in a dry state and will not have a sticking phenomenon, and has a certain fluidity, under the extrusion of the anti-blocking gate plate, it is extruded and discharged to the outlet through the straight channel and the curved channel.

[0058] Referring to Figure 5 As shown in the figure, it is a structural schematic diagram of the anti-blocking gate plate when it is closed, the bottom of the outlet valve seat is provided with an inclined opening, when the valve device is closed, a certain amount of loose coal powder will be accumulated in the sealing groove at the bottom, and the loose coal powder will be extruded with the closing of the anti-blocking gate plate, if a small amount of coal powder exists in the V-shaped groove at the bottom, it will play a sealing role, when there is more coal powder in the sealing groove, since the coal powder has a high temperature of 90 DEG C, the coal powder is in a dry state and will not have a sticking phenomenon, and has a certain fluidity, under the extrusion of the anti-blocking gate plate, it is extruded and discharged to the outlet through the straight channel and the curved channel.

[0059] In order to achieve the above purpose, referring to Figure 6 The present application also correspondingly provides a coal powder anti-blocking method, which is applied to the coal powder anti-blocking device and comprises the following steps.

[0060] The anti-blocking device is closed, and the anti-blocking gate plate is in contact with the protruding sealing end;

[0061] When the coal powder is in a small amount, the anti-blocking gate plate extrudes the coal powder, and the protruding sealing end and the concave sealing end seal the anti-blocking device;

[0062] When the coal powder is in a large amount, the anti-blocking gate plate extrudes the coal powder, and the coal powder is extruded and discharged through the straight channel and the curved channel according to the fluidity.

[0063] In summary, the V-shaped concave sealing end of the anti-blocking gate plate is matched with the V-shaped protruding sealing end of the bottom of the valve body, a plurality of round holes are arranged in the sealing front arc of the anti-blocking gate plate, the inner round hole of the sealing front arc of the anti-blocking gate plate is provided with a channel communicated with the valve outlet in the direction of the valve outlet, the bottom of the valve seat is provided with a beveled opening, when the valve is closed, a small amount of coal powder will exist in the double V-shaped groove at the bottom under the extrusion and has a certain sealing effect, when the coal powder in the sealing groove is more, according to the fluidity, the coal powder will be extruded to the outlet and discharged under the extrusion of the anti-blocking gate plate, when the amount of coal powder in the sealing groove is further increased, the valve can also be repeatedly opened and closed, and the coal powder remaining in the channel is removed by knocking the anti-blocking gate plate when the valve is opened, thereby effectively ensuring the overall sealing performance of the valve.

[0064] The above is only one embodiment of the present application, but cannot limit the scope of the present application, any structural change made according to the present application, as long as the essence of the present application is not lost, should be considered as falling within the scope of the present application.

[0065] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process and related description of the system described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0066] It should be noted that the system provided by the above embodiments is only exemplified by the division of the above functional modules, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the modules or steps in the embodiments of the present application are further divided or combined, for example, the modules of the above embodiments can be combined into one module, or can be further split into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present application are only for distinguishing the modules and steps, and should not be considered as an improper limitation of the present application.

[0067] Those skilled in the art should clearly understand that the modules and method steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. The programs corresponding to the software modules and method steps can be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In order to clearly illustrate the interchangeability of electronic hardware and software, the components and steps of each example have been described in the above description in general terms. Whether the functions are performed by electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0068] The term "comprising" or any other similar word is intended to encompass a non-exclusive inclusion, so that a process, method, article, or equipment / device including a series of elements includes not only those elements, but also other elements not explicitly listed, or inherent to the process, method, article, or equipment / device.

[0069] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after such changes or replacements will all fall within the protection scope of the present application.

[0070] The above description is only for the preferred embodiments of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A coal powder anti-blocking device, characterized in that, The device comprises a shell, a blocking prevention gate plate, a sealing element, and a valve seat. The blocking prevention gate plate is arranged in the shell and one end of the blocking prevention gate plate is arranged outside the shell. The sealing element is arranged at the lower end of the shell and is used for sealing the blocking prevention device. The valve seat is arranged at the lower end of the shell and the bottom of the valve seat is provided with a bevel. The one end of the blocking prevention gate plate arranged in the shell is in a circular arc shape, a plurality of circular holes are arranged in the interior of the one end of the blocking prevention gate plate in a circular arc shape, a channel is arranged in the outlet direction of the blocking prevention device and is communicated with the outlet of the blocking prevention device, and the circular holes are communicated with the channel. The one end of the blocking prevention gate plate arranged in the shell in a circular arc shape is provided with a concave sealing end and the concave sealing end is in a V shape. The bottom end of the blocking prevention device is further provided with a protruding sealing end and the protruding sealing end is in a V shape. The valve seat is further provided with a micro bevel and the micro bevel is used for sealing the blocking prevention device when the one end of the blocking prevention gate plate is in contact with the protruding sealing end. The channel comprises a straight channel and a curved channel, the straight channel is communicated with the curved channel, and the channel is used for extruding and discharging the pulverized coal through the straight channel and the curved channel according to the flowability.

2. The device according to claim 1, wherein the shell is provided with a protruding fixing end. A groove is arranged on the sealing element and the groove is fixedly connected with the protruding fixing end.

3. The device according to claim 2, wherein the sealing element is detachably connected with the shell. The bevels are two. The angle between the bevels and the blocking prevention gate plate is not greater than 45°. The device comprises closing the blocking prevention device, the blocking prevention gate plate being in contact with the protruding sealing end.

4. The coal anti-blocking device according to claim 1, characterized in that, When the pulverized coal is in a small amount, the blocking prevention gate plate extrudes the pulverized coal and seals the blocking prevention device through the protruding sealing end and the concave sealing end.

5. The coal anti-blocking device according to claim 4, characterized in that, When the pulverized coal is in a large amount, the blocking prevention gate plate extrudes the pulverized coal and discharges the pulverized coal through the straight channel and the curved channel according to the flowability.

6. A method for preventing coal powder from blocking, applied to the coal powder anti-blocking device according to any one of claims 1-5, characterized in that, ​ ​ ​ ​

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