Pulse back flushing device and back flushing cleaning equipment

Abstract

The utility model provides a kind of pulse backflush device and backflush cleaning equipment, it is related to cleaning equipment field, wherein the pulse backflush device includes: backflush cover;And filter core bag blue component, wherein the backflush cover is coaxially fastened connection with the filter core bag blue component;Wherein the inside of the backflush cover is coaxially provided with the upward protruding distributor;And wherein the distributor is non-porous face.

Description

Technical Field

[0001] This utility model relates to a pulse backflushing device and a backflushing cleaning equipment. Background Technology

[0002] Currently, the filter materials commonly used in methods for treating dust and flue gas in medium and high temperature environments are rigid honeycomb three-dimensional ceramic filter element pocket components, columnar ceramic filter tubes, and high-temperature resistant filter element pocket components such as metal filter mesh. Dust collector filter element pocket components are rigid filter element pocket components made of organic or inorganic materials. During backflushing, clean compressed gas directly backflushes the filter element pocket component through a backflushing hood or venturi tube. Specifically, during backflushing, the gas is concentrated in the upper center of the filter element pocket component for direct backflushing. The center of the filter element pocket component receives greater gas impact, resulting in a good backflushing effect. However, there is no directly backflushed gas around the filter element pocket component, leading to a poorer dust removal effect and uneven dust removal. Furthermore, the compressed gas is usually a low-temperature gas, while the upper chamber previously contained high-temperature gas, and the filter element was also at a high temperature. Therefore, if the backflushing gas directly blows onto the filter element, it will cause thermal shock to the filter element, shortening its lifespan. Finally, backflushing cleaning equipment is usually equipped with multiple filter element basket assemblies. If the backflushing gas blows directly onto the filter element, it will cause drastic fluctuations in the air pressure of the upper chamber, which will lead to uneven pressure in the various pores of each filter element, easily damaging the filter element pores and causing uneven dust removal effect of each filter element. Utility Model Content

[0003] This utility model was made in view of the above circumstances, and its purpose is to provide a pulse backflushing device and backflushing cleaning equipment that can backflush the filter element basket assembly at constant temperature, constant pressure and uniformity.

[0004] According to an illustrative aspect of this utility model, a pulse backflush device includes: a backflush hood; and a filter element basket assembly, wherein the backflush hood and the filter element basket assembly are coaxially and fastened together; wherein an upwardly protruding distributor is coaxially disposed inside the backflush hood; and wherein the distributor is a non-porous surface or a non-through-hole surface.

[0005] According to another illustrative aspect of the present invention, a backflushing cleaning device includes a pulse backflushing device and further includes: a backflushing nozzle disposed on a backflushing main pipe, wherein the backflushing shroud is coaxially disposed directly below the backflushing nozzle; and wherein the cross-sectional area of ​​the backflushing main pipe is larger than the cross-sectional area of ​​the backflushing nozzle. Attached Figure Description

[0006] Figure 1 This is a schematic diagram showing the structure of a backflushing cleaning device containing multiple pulse backflushing devices according to the present invention;

[0007] Figure 2This is a bottom view showing that the distributor according to this utility model is a non-porous curved surface and the support is a cross-shaped hollow back blow hood;

[0008] Figure 3 This indicates that the distributor according to this utility model has a non-perforated curved surface and the support has a cross-shaped hollow back-blowing shroud. Figure 2 BB line section view;

[0009] Figure 4 This is a bottom view showing a backflush hood according to the present invention, where the distributor is a non-perforated curved surface and the support is a perforated plate.

[0010] Figure 5 This indicates that the distributor according to this utility model has a non-perforated curved surface and the support is a perforated plate-shaped backflush. Figure 4 BB line section view;

[0011] Figure 6 This is a bottom view showing that the distributor according to this utility model is a non-perforated conical surface and the support is a cross-shaped hollow back blow hood;

[0012] Figure 7 This indicates that the distributor according to this utility model has a non-perforated conical surface and the support has a cross-shaped hollowed-out backflush edge. Figure 6 BB line section view;

[0013] Figure 8 This is a bottom view showing a backflush shroud according to the present invention, in which the distributor is a non-perforated conical surface and the support is a perforated plate.

[0014] Figure 9 This indicates that the distributor according to this utility model is a non-perforated conical surface and the support is a perforated plate-shaped backflush. Figure 8 BB line section view. Detailed Implementation

[0015] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that these embodiments are provided merely to enable those skilled in the art to better understand and implement the present invention, and are not intended to limit the scope of the present invention in any way. The exemplary embodiments provided in this invention are for illustrating various aspects of the present invention and should not be construed as limiting the scope of the present invention. Depending on the implementation, the corresponding device elements may be configured as hardware, software, firmware, or a combination thereof.

[0016] [Pulse backflush device 50]

[0017] Figure 1 This is a schematic diagram showing the structure of a backflushing cleaning device 100 containing multiple pulse backflushing devices 50 according to the present invention.

[0018] like Figure 1As shown, the backflush cleaning device 100 includes a pulse valve 9, an air tank 8, a backflush main pipe 1, a backflush nozzle 2, and multiple pulse backflush devices 50. Multiple pulse backflush devices 50 are connected to the backflush main pipe 1 via the backflush nozzle 2. The backflush main pipe 1 is connected to the air tank 8 and the pulse valve 9 in the opposite direction of fluid inflow, and is sealed at its end in the direction of fluid inflow.

[0019] The pulse backflush device 50 includes a backflush cover 3 and a filter element basket assembly 6, with the backflush cover 3 and the filter element basket assembly 6 being coaxially and fastened together.

[0020] Backflush nozzle 2 and backflush hood 3 are disposed in the upper cavity 14 of the backflush cleaning device 100, and filter element basket assembly 6 is disposed in the lower cavity 15 of the backflush cleaning device 100 and communicates with the upper cavity 14. The backflush nozzle 2, backflush hood 3, and filter element basket assembly 6 are arranged concentrically from top to bottom in the vertical direction. The upper cavity 14 and the lower cavity 15 are separated by a partition 16, and the upper end of the filter element basket assembly 6 is fixedly connected to the backflush hood 3 and the partition 16. The upper cavity 14 is also provided with a lifting valve assembly 10 and a sealing gate 11. When the lifting valve assembly 10 is activated, the sealing gate 11 at the bottom of the upper cavity 14 is closed, and at this time, the upper cavity 14 is in a state of no negative pressure. Then, the pulse valve 9 is opened, and high-pressure gas flows into the air tank 8, and then flows into the backflush nozzle 2 through the backflush main pipe 1, and then flows through the backflush hood 3 to backflush the filter element basket assembly 6 to perform dust removal.

[0021] Preferably, the backflush nozzle 2 is disposed on the backflush main pipe 1, the backflush cover 3 is coaxially disposed directly below the backflush nozzle 2, and the cross-sectional area of ​​the backflush main pipe 1 is larger than the cross-sectional area of ​​the backflush nozzle 2.

[0022] Preferably, if the backflush cleaning device 100 is equipped with multiple pulse backflush devices 50, the cross-sectional area of ​​the backflush main pipe 1 is greater than the sum of the cross-sectional areas of all backflush nozzles 2, so as to evenly distribute the pressure of each backflush nozzle 2.

[0023] [Reverse blowout hood 3]

[0024] Figure 2 This is a bottom view showing that the distributor 5 according to this utility model is a non-porous curved surface and the support 4 is a cross-shaped hollow back blow cover 3. Figure 3 This indicates that, according to the present invention, the distributor 5 is a non-porous curved surface and the support 4 is a cross-shaped hollowed-out back-blowing cover 3 along... Figure 2 BB line section view; Figure 4 This is a bottom view showing that the distributor 5 according to this utility model is a non-perforated curved surface and the support 4 is a perforated plate-shaped backflush 3. Figure 5 This indicates that, according to the present invention, the distributor 5 is a non-perforated curved surface and the support 4 is a perforated plate-shaped backflush 3 along... Figure 4 BB line section view; Figure 6This is a bottom view showing that the distributor 5 according to this utility model is a non-perforated conical surface and the support 4 is a cross-shaped hollow back blow cover 3; Figure 7 This indicates that, according to this utility model, the distributor 5 is a non-perforated conical surface and the support 4 is a cross-shaped hollowed-out backflush 3 along... Figure 6 BB line section view; Figure 8 This is a bottom view showing that the distributor 5 according to this utility model is a non-perforated conical surface and the support 4 is a perforated plate-shaped backflush 3.

[0025] Figure 9 This indicates that, according to the present invention, the distributor 5 is a non-perforated conical surface and the support 4 is a perforated plate-shaped backflush 3 along... Figure 8 BB line section view.

[0026] like Figures 2 to 9 As shown, the backflush shroud 3 is coaxially and fastened to the filter element basket assembly 6. The backflush shroud 3 is generally a conical shell, preferably circular or square in its cross-section perpendicular to the central axis. The small-diameter end of the backflush shroud 3 is close to the backflush nozzle 2 and is spaced from the backflush nozzle 2 by a predetermined distance L in the vertical direction. Preferably, the predetermined distance L is greater than 0 and less than or equal to 50 mm. The large-diameter end of the backflush shroud 3 is provided with a flange mounting plate 12, which is preferably rectangular and has fixing parts 13 at its four corners. The fixing parts 13 can be through holes, threaded holes, or welded points, and are used for fixed connection with the upper end of the filter element basket assembly 6. Accordingly, the fixing connection method includes bolts, screws, or welding. In particular, the fixing connection method between the fixing parts 13 and the upper end of the filter element basket assembly 6 is not limited to the aforementioned methods; any method that can achieve a fixed connection is acceptable.

[0027] [Filter Cartridge Basket Assembly 6]

[0028] The filter element basket assembly 6 has a mesh structure, which includes a basket 7 disposed on the outer periphery. The filter element basket assembly 6 is fixed to the partition plate 16 through the basket 7. The basket 7 of the filter element basket assembly 6 is preferably cylindrical or rectangular, and its upper end is provided with a flange mounting part and a fixing part corresponding to the flange mounting part 12 and the fixing part 13 of the backflush hood 3.

[0029] [Block 16]

[0030] The partition plate 16 is provided with through holes corresponding to the shape and size of the basket 7 of the filter element basket assembly 6. These through holes mate with the flange mounting portion of the basket 7 of the filter element basket assembly 6 to hook the filter element basket assembly 6. Fixing portions corresponding to the fixing portions 13 of the backflush shroud 3 are provided around the through holes of the partition plate 16, thereby ensuring that the upper end of the filter element basket assembly 6 is fixedly connected to the backflush shroud 3 and the partition plate 16. Specifically, the filter element basket assembly 6 is first hooked into the through holes of the partition plate 16, and then the flange mounting portion 12 of the backflush shroud 3 is placed on the upper surface of the flange mounting portion of the basket 7 of the filter element basket assembly 6. The mounting portions are aligned and fixedly connected, thereby achieving a fixed connection between the upper end of the filter element basket assembly 6 and the backflush shroud 3 and the partition plate 16.

[0031] [Distributor 5]

[0032] Inside the backflush hood 3, an upwardly protruding distributor 5 is coaxially arranged. This distributor 5 is either a non-porous surface or a non-through-hole surface. The distributor 5 is arranged from top to bottom coaxially with the backflush nozzle 2, the backflush hood 3, and the filter element basket assembly 6 along the vertical center line. Specifically, the distributor 5 inside the backflush hood 3 is a backflush airflow distribution structure, located at the internal center of the backflush hood 3, and fixed below by a bracket 4.

[0033] Preferably, the distributor 5, formed by a non-perforated surface or a non-through-perforated surface, is configured in the shape of a hemisphere, sphere, ellipse, cone, or multi-faceted cone, etc. For example... Figure 3 and Figure 5 As shown, distributor 5 is hemispherical or elliptical. (As...) Figure 7 and Figure 9 As shown, distributor 5 is a conical or multi-faceted cone.

[0034] Preferably, the distributor 5 is fixed inside the backflushing cover 3 by a bracket 4, which has through holes. The bracket 4 is located below the distributor 5 and is fixedly connected to the backflushing cover 3, serving to support and fix the distributor 5. The bracket 4 can be a flat plate with openings or a hollowed-out bracket composed of multiple small strips, etc. Figure 2 and Figure 6 As shown, bracket 4 consists of two small strips forming a cross-shaped hollow structure. Figure 4 and Figure 8 As shown, the support 4 is a plate with multiple through holes.

[0035] Preferably, the distributor 5 is made of a rigid, high-temperature resistant, corrosion-resistant, and wear-resistant material.

[0036] [Work Process]

[0037] Step 1: Start the lift valve assembly 10 and close the sealing gate 11 at the bottom of the upper cavity 14.

[0038] Step 2: Open the pulse valve 9, and the high-pressure gas flows out from the gas tank 8 instantly. After flowing into the backflush nozzle 2 through the backflush main pipe 1, the low-temperature high-pressure gas is sprayed into the center of the backflush hood 3, which is the backflush primary air.

[0039] Step 3: Since the backflush nozzle 2 is at a specified distance L from the backflush hood 3, when the low-temperature high-pressure gas (backflush primary air) flowing out of the backflush nozzle 2 flows downward at high speed, it drives the hot gas below the backflush nozzle 2 (high-temperature gas inside the backflush hood 3) and around it (high-temperature gas inside the upper chamber 14 outside the backflush hood 3) to form a constant temperature gas with uniform temperature in the backflush hood 3, that is, backflush secondary air.

[0040] Step 4: Since the air reservoir 8 stores compressed air, the instantaneously released primary and secondary air releases some pressure through the filter element; the remaining pressure forms positive pressure air in the upper chamber 14, and the positive pressure air then releases pressure evenly through the filter element basket assembly 6 at its center and all surrounding positions, i.e., backflushing three times. The entire backflushing process is completed when the compressed air pressure is completely released.

[0041] [Technical Effects]

[0042] Hereinafter, [1] to [6] will briefly summarize and list the features and technical effects of the embodiments of the pulse backflushing device 50 and backflushing cleaning equipment 100 according to the present invention described above.

[0043] [1] A pulse backflush device 50 includes: a backflush cover 3; and a filter element basket assembly 6, wherein the backflush cover 3 and the filter element basket assembly 6 are coaxially and fastened together, characterized in that: a distributor 5 protruding upward is coaxially provided inside the backflush cover 3; and wherein the distributor 5 is a non-porous surface or a non-through-hole surface.

[0044] [2] According to the pulse backflush device 50 of [1], the shape of the distributor 5 is constructed as a hemispherical, spherical, elliptical, conical or multi-faceted cone.

[0045] [3] According to the pulse backflush device 50 of [1], the backflush nozzle 2 and the backflush cover 3 are spaced apart by a specified distance L in the vertical direction.

[0046] [4] According to the pulse backflush device 50 of [1], the distributor 5 is fixed inside the backflush cover 3 by a bracket 4, and the bracket 4 is provided with a through hole.

[0047] [5] A backflush cleaning device 100, comprising the pulse backflush device 50 of any one of [1]-[4], characterized in that: it further comprises: a backflush nozzle 2, which is disposed on a backflush main pipe 1, wherein the backflush cover 3 is coaxially disposed directly below the backflush nozzle 2; and wherein the cross-sectional area of ​​the backflush main pipe 1 is larger than the cross-sectional area of ​​the backflush nozzle 2.

[0048] [6] According to the back-blowing cleaning device 100 of [5], when there are multiple pulse back-blowing devices 50, the cross-sectional area of ​​the back-blowing main pipe 1 is greater than the sum of the cross-sectional areas of the multiple back-blowing nozzles 2 corresponding to the multiple pulse back-blowing devices 50.

[0049] According to the above embodiments, the cross-sectional area of ​​the backflush main pipe 1 is greater than the sum of the cross-sectional areas of the backflush nozzles 2, so the high-pressure gas forms a constant-pressure gas in the backflush main pipe 1.

[0050] According to the above embodiments, the backflush nozzle 2 and the backflush shroud 3 are spaced apart by a specified distance L in the vertical direction. This specified distance L is greater than 0 and less than or equal to 50 mm. Therefore, when the low-temperature high-pressure gas (backflush primary air) flowing out of the backflush nozzle 2 flows downward at high speed, it drives the hot gas below the backflush nozzle 2 (high-temperature gas inside the backflush shroud 3) and around it (high-temperature gas inside the upper chamber 14 outside the backflush shroud 3) to form a constant-temperature gas with uniform temperature in the backflush shroud 3 (backflush secondary air). In addition, the two gases (the low-temperature high-pressure gas ejected through the backflush nozzle 2 and the high-temperature gas previously stored in the upper chamber 14, i.e., backflush secondary air) mix and enter the filter element together without reducing the air pressure and air volume, but instead increasing the backflush air volume; at the same time, the backflush temperature is increased, thereby reducing the thermal shock of cold gas on the filter element.

[0051] According to the above embodiments, a non-porous distributor 5 protruding upwards is provided at the center of the backflush hood 3, thereby increasing the flow resistance of the backflush secondary air and forming a violently moving turbulent flow of the backflush secondary air in the backflush hood 3. As a result, the constant temperature gas (backflush secondary air) instantly flows back and fills the entire space of the upper chamber 14, thereby forming a constant pressure gas with uniform pressure in the entire upper chamber 14, averaging the backflush pressure distribution of each filter element, and solving the problem of uneven backflush gas distribution in the upper chamber 14; and forming a pressure equal to the overall pressure of the upper chamber 14 on each channel of all filter elements, solving the problems of insufficient regeneration efficiency and poor dust removal effect caused by gas turbulence.

[0052] According to the above embodiments, the distributor 5 is constructed in the shape of a hemispherical, spherical, elliptical, conical, or multi-faceted cone, which increases the distribution of the constant pressure gas (backflush tertiary air) in the upper chamber 14 on the upper surface of the filter element by the distributor 5 inside the backflush hood 3, thereby enhancing the backflush effect.

[0053] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in this utility model is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. A pulse backflush device, comprising: Backflush hood; as well as Filter element basket assembly, The backflush hood is coaxially and securely connected to the filter element basket assembly. Its characteristics are: The backflush shroud contains a coaxially arranged upward-protruding distributor; and The distributor is either a non-perforated surface or a non-through-perforated surface.

2. The pulse backflush device according to claim 1, wherein, The distributor is constructed in the shape of a hemispherical, spherical, elliptical, conical, or multifaceted cone.

3. The pulse backflush device according to claim 1, wherein, The backflush nozzle and the backflush shroud are spaced at a specified distance in the vertical direction.

4. The pulse backflush device according to claim 1, wherein, The distributor is fixed inside the backflush hood by a bracket, and the bracket is provided with through holes.

5. A backflush cleaning device comprising the pulse backflush device according to any one of claims 1-4, characterized in that: it also... include: Backflush nozzles are installed on the backflush main pipe. The backflush shroud is coaxially disposed directly below the backflush nozzle; and The cross-sectional area of ​​the backflush main pipe is larger than the cross-sectional area of ​​the backflush nozzle.

6. The backflushing cleaning device according to claim 5, wherein, When there are multiple pulse backflush devices, the cross-sectional area of ​​the backflush main pipe is greater than the sum of the cross-sectional areas of the multiple backflush nozzles corresponding to the multiple pulse backflush devices.

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