Sand-proof exhaust inlet device and waste heat recovery system

Abstract

The utility model discloses a sand-dust-proof exhaust inlet device and a waste heat recovery system, and the sand-dust-proof exhaust inlet device comprises a barrel, the central axis of the barrel extends in the vertical direction, and a plurality of air inlets are formed in the side wall of the barrel in the tangential direction; the air outlet pipe is connected with the barrel body, an inlet of the air outlet pipe is located in the barrel body, an outlet of the air outlet pipe is located outside the barrel body, and in the vertical direction, the inlet is higher than the air inlet; and the sand and dust collector is connected to the bottom of the cylinder body and is used for collecting sand and dust from the cylinder body. According to the sand and dust prevention exhaust inlet device and the waste heat recovery system, sand and dust in the environment can be effectively filtered out.

Description

Technical Field

[0001] The present application relates to the field of waste heat recovery technology, and more specifically to a dust-proof air suction port device and a waste heat recovery system. Background Art

[0002] The air intake device in the existing waste heat recovery system usually directly inhales ambient air and cannot filter out sand and dust particles in the environment. It can be used in areas with clean ambient air. However, when used in dusty areas, sand and dust particles in the air can easily cause damage to the fan blades in the waste heat recovery system, fouling and blockage in the waste heat recovery system, and other problems.

[0003] Therefore, improvements are needed to at least partially solve the above problems. Utility Model Content

[0004] The Summary of the Utility Model introduces a series of simplified concepts that will be further described in the Detailed Description of the Utility Model. The Summary of the Utility Model of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above problems, according to a first aspect of the present invention, a dust-proof air suction port device is provided, comprising:

[0006] A cylinder, wherein the central axis of the cylinder extends in a vertical direction, and the side wall of the cylinder is provided with a plurality of air inlets along a tangential direction;

[0007] an air outlet pipe connected to the cylinder, wherein the inlet of the air outlet pipe is located inside the cylinder and the outlet of the air outlet pipe is located outside the cylinder, wherein, in the vertical direction, the height of the inlet is higher than the height of the air inlet;

[0008] A sand and dust collector is connected to the bottom of the cylinder and is used to collect sand and dust from the cylinder.

[0009] Exemplarily, the plurality of air inlets have the same height in the vertical direction, and are equidistantly arranged in the circumferential direction of the cylinder.

[0010] Exemplarily, in the vertical direction, the height of the outlet is higher than the height of the air inlet.

[0011] Exemplarily, in the vertical direction, the height of the outlet is lower than the height of the air inlet.

[0012] Exemplarily, a dust outlet is provided at the lowest point of the air outlet pipe located inside the cylinder.

[0013] Exemplarily, the anti-sand and dust air suction port device further includes a connecting pipe, a first end of the connecting pipe is connected to the dust outlet, and a second end of the connecting pipe is located in the sand and dust collector.

[0014] Exemplarily, a filter is provided in the air inlet.

[0015] Exemplarily, the dust collector includes a reducing pipe and a self-opening and closing component;

[0016] The first end of the reducing tube is connected to the bottom of the cylinder, the second end of the reducing tube is provided with the self-opening and closing component, and the flow area of the reducing tube gradually decreases from the first end to the second end of the reducing tube;

[0017] The self-opening and closing component is used to close the second end of the reducing tube when the weight of the sand and dust in the reducing tube is less than a preset weight, and to open the second end of the reducing tube when the weight of the sand and dust in the reducing tube is greater than or equal to the preset weight.

[0018] Exemplarily, the self-opening and closing assembly includes a support member, a connecting member, a sand baffle and a counterweight member;

[0019] The support member is fixedly connected to the reducing tube;

[0020] The connecting member is rotatably connected to the supporting member;

[0021] The sand baffle is fixedly connected to the first end of the connector and is used to open or close the second end of the reducing tube;

[0022] The counterweight is fixedly or detachably connected to the second end of the connecting member.

[0023] According to a second aspect of the present invention, a waste heat recovery system is provided, which includes the anti-sand and dust air suction port device as described above.

[0024] According to the dust-proof air suction port device and waste heat recovery system of the present invention, a plurality of air inlets are arranged along the tangential direction of the side wall of the cylinder, and the height of the inlet of the air outlet pipe is set to be higher than the height of the air inlet, so that the air entering the cylinder from the air inlet can be rotated and moved upward to enter the air outlet pipe. The sand and dust in the air can be separated from the air under the action of gravity and centrifugal force and enter the sand and dust collection device at the bottom of the cylinder, thereby significantly reducing the sand and dust in the air entering the air outlet pipe and realizing the filtering of sand and dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following drawings of this application are hereby incorporated as part of this application for understanding this application. The drawings show the embodiments of this application and their descriptions, and are used to explain the device and principle of this application. In the drawings,

[0026] Figure 1 is a schematic cross-sectional view of an anti-sand and dust air intake device according to an embodiment of the present application;

[0027] Figure 2 for Figure 1 Schematic cross-sectional view of the AA section;

[0028] Figure 3 for Figure 1 Schematic cross-sectional view of the self-opening and closing components in FIG.

[0029] Figure 4 2 is a schematic cross-sectional view of a dust-proof air intake device according to another embodiment of the present application.

[0030] Description of reference numerals:

[0031] 10-cylinder, 11-air inlet, 20-air outlet, 20'-air outlet, 21-inlet, 22-outlet, 23-dust outlet, 30-sand and dust collector, 31-reducing pipe, 32-self-opening and closing component, 321-support, 322-connecting part, 323-sand baffle, 324-counterweight, 40-filter, 50-support leg. DETAILED DESCRIPTION

[0032] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, some technical features well known in the art are not described in order to avoid confusion with the present application.

[0033] It should be understood that the present application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the present application to those skilled in the art. In the drawings, the dimensions and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals throughout represent like elements.

[0034] It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are merely used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Therefore, without departing from the teachings of this application, the first element, component, region, layer, or part discussed below may be represented as a second element, component, region, layer, or part.

[0035] Spatially relative terms, such as "below," "beneath," "beneath," "above," "upper," etc., may be used herein for convenience to describe the relationship of one element or feature to other elements or features illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientations depicted in the figures.

[0036] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present application. When used herein, the singular forms "a", "an", and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0037] The embodiments of the utility model are described herein with reference to cross-sectional views which are schematic diagrams of ideal embodiments (and intermediate structures) of the present application. Thus, variations in the shapes shown due to, for example, manufacturing techniques and / or tolerances can be expected. Therefore, the embodiments of the present application should not be limited to the specific shapes shown herein, but include shape deviations due to, for example, manufacturing. Therefore, what is shown in the figures is schematic in nature, and their shapes are not intended to show the actual shape of the device and are not intended to limit the scope of the present application.

[0038] Refer to the attached Figure 1-3 An exemplary description is given of an anti-sand and dust air suction port device according to an embodiment of the present application, which includes a cylinder 10 , an air outlet pipe 20 , and a sand and dust collector 30 .

[0039] The center axis of the cylinder 10 is along the vertical direction (i.e. Figure 1 The cylinder 10 extends in the up-down direction, that is, the direction perpendicular to the ground, and the side wall of the cylinder 10 is provided with a plurality of air inlets 11 along the tangential direction. The plurality of air inlets 11 provided along the tangential direction are used to make the air entering the cylinder 10 rotate and flow.

[0040] The air outlet duct 20 is connected to the cylinder 10, and the inlet 21 of the air outlet duct 20 is located inside the cylinder 10, and the outlet 22 of the air outlet duct 20 is located outside the cylinder 10. For example, the outlet 22 of the air outlet duct 20 can be connected to the air inlet of the fan. When the fan is working, it can generate suction to allow air in the environment to enter the cylinder 10 from the air inlet 11 and rotate upward to enter the air outlet duct 20. In the vertical direction, the height of the inlet 21 of the air outlet duct 20 is higher than the height of the air inlet 11. Therefore, the air entering the cylinder 10 from the air inlet 11 will rotate and flow upward, entering the inlet 21 of the air outlet duct 20. The sand and dust in the air can be separated from the air under the action of gravity and centrifugal force and settle to the lower part of the cylinder 10.

[0041] The dust collector 30 is connected to the bottom of the cylinder 10 and is used to collect dust from the cylinder 10 , that is, to collect dust that settles to the bottom of the cylinder 10 when the air rotates and moves upward.

[0042] The anti-sand and dust air suction port device of this embodiment can effectively separate sand and dust in the air, and significantly reduce the sand and dust content in the air entering the air outlet pipe 20.

[0043] In this embodiment, the cylinder 10 includes a hollow cylindrical side wall and an upper cover plate located at the upper end of the side wall, which closes the upper end of the side wall. The air inlet 11 is also hollow cylindrical, and the multiple air inlets 11 are equal in height in the vertical direction and are evenly spaced around the circumference of the cylinder 10. Figure 2 In this embodiment, there are three air inlets 11, which are of equal height in the vertical direction and are equidistantly arranged in the circumferential direction of the cylinder 10. In other embodiments, there may be two, four, or more air inlets 11. The vertical heights of the multiple air inlets 11 may not be equal, as long as the air entering the cylinder 10 through the multiple air inlets 11 can rotate.

[0044] In this embodiment, the outlet 22 of the air outlet duct 20 is vertically lower than the air inlet 11. The air outlet duct 20 is connected to the side wall of the cylinder 10. Air entering the cylinder 10 through the air inlet 11 first flows upward in a rotating manner, then flows downward into the air outlet duct 20, and exits the cylinder 10 through the air outlet duct 20.

[0045] See attached Figure 4 In another embodiment of the dust-proof air intake device of the present application, the outlet 22 of the air outlet pipe 20' is vertically higher than the air inlet 11. The air outlet pipe 20' is connected to the upper cover of the cylinder 10. Air entering the cylinder 10 through the air inlet 11 first flows upward in a rotating manner, then flows upward into the air outlet pipe 20' and exits the cylinder 10 through the air outlet pipe 20'.

[0046] See attached Figure 1 In this embodiment, a dust outlet 23 is provided at the lowest point of the air outlet pipe 20 inside the cylinder 10. Therefore, the sand and dust in the air entering the air outlet pipe 20 can move downward under the action of gravity when flowing through the dust outlet 23, and leave the air outlet pipe 20 through the dust outlet 23, thereby realizing secondary filtration of the sand and dust.

[0047] See attached Figure 1 In this embodiment, the anti-dust air suction port device also includes a connecting pipe, a first end of the connecting pipe is connected to the dust outlet 23, and a second end of the connecting pipe is located in the dust collector 30, which is used to allow the dust flowing out of the dust outlet 23 to be directly discharged into the dust collector 30, so that it can be better collected and prevented from entering the air outlet again.

[0048] See attached Figure 1 、 2 In this embodiment, a filter 40 is provided in the air inlet 11 for preliminarily filtering sand, dust or other impurities in the air entering the air inlet 11. The filter 40 may be a steel mesh, and the size of the mesh can be configured by those skilled in the art according to filtering requirements, and is not specifically limited in this application.

[0049] See attached Figure 1 In this embodiment, the sand and dust collector 30 includes a reducing tube 31 and a self-opening and closing assembly 32. The first end of the reducing tube 31 is connected to the bottom of the cylinder 10, specifically, to the bottom of the side wall of the cylinder 10. The second end of the reducing tube 31 is provided with the self-opening and closing assembly 32. The flow area of the reducing tube 31 gradually decreases from the first end to the second end of the reducing tube 31. The reducing tube 31 is used to collect sand and dust from the cylinder 10 toward its second end.

[0050] The self-opening and closing assembly 32 is configured to close the second end of the reducing tube 31 when the weight of the dust in the reducing tube 31 is less than a preset weight. When the weight of the dust in the reducing tube 31 is greater than or equal to the preset weight, the self-opening and closing assembly 32 opens the second end of the reducing tube 31 to discharge the dust in the reducing tube 31. Thus, the self-opening and closing assembly 32 can effectively discharge dust when a large amount of dust accumulates, and can keep the second end of the reducing tube 31 closed most of the time, preventing air from flowing in through the closed second end of the reducing tube 31.

[0051] See attached Figure 1 、 3In this embodiment, the self-opening and closing assembly 32 includes a support member 321, a connector 322, a sand guard 323, and a counterweight 324. The support member 321 is fixedly connected to the reducing tube 31, and the connector 322 is rotatably connected to the support member 321. The connector 322 and the support member 321 can be rotatably connected by a rotating shaft structure. The support member 321 is T-shaped, and the sand guard 323 is fixedly connected to the first end of the connector 322 and is used to open or close the second end of the reducing tube 31. The area of the sand guard 323 is greater than or equal to the area of the second end of the closed reducing tube 31. The counterweight 324 is fixedly or detachably connected to the second end of the connector 322, and the third end of the connector 322 is rotatably connected to the support member 321. When the weight of the dust in the reducing tube 31 is less than a preset weight, the sand shield 323 closes the second end of the reducing tube 31 under the action of the gravity of the counterweight 324. When the weight of the dust in the reducing tube 31 is greater than or equal to the preset weight, the dust drives the sand shield 323, the connecting member 322, and the counterweight 324 to rotate relative to the support member 321 under the action of gravity, and the sand shield 323 opens the second end of the reducing tube 31, discharging the dust in the reducing tube 31. During use, the automatic opening and closing assembly 32 can adjust the dust accumulation weight and the opening frequency by adding or removing the weight of the counterweight 324.

[0052] In this embodiment, the sand and dust collector 30 further includes a plurality of support legs 50 , which are connected to the lower portion of the cylinder 10 , and are used to enable the anti-sand and dust air suction port device to be independently arranged on the ground.

[0053] The present application also provides a waste heat recovery system, which includes the dust-proof air suction port device described above. The waste heat recovery system may also include a fan, the air inlet of the fan being connected to the outlet of the air outlet pipe 20 (20') of the dust-proof air suction port device.

[0054] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely illustrative and are not intended to limit the scope of the present application. Various changes and modifications may be made therein by those skilled in the art without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0055] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0056] Similarly, it should be understood that in order to streamline the present application and aid in understanding one or more of the various utility model aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, this approach of the present application should not be interpreted as reflecting the intention that the application claimed for protection requires more features than those explicitly recited in each claim. More precisely, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with features that are less than all the features of a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into the detailed description, with each claim itself serving as a separate embodiment of the present application.

[0057] Those skilled in the art will understand that, except where mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or apparatus disclosed herein may be combined in any combination. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that provides the same, equivalent, or similar purpose.

[0058] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

[0059] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. A dust-proof air suction port device, characterized in that: include: A cylinder, wherein the central axis of the cylinder extends in a vertical direction, and the side wall of the cylinder is provided with a plurality of air inlets along a tangential direction; an air outlet pipe connected to the cylinder, wherein the inlet of the air outlet pipe is located inside the cylinder and the outlet of the air outlet pipe is located outside the cylinder, wherein, in the vertical direction, the height of the inlet is higher than the height of the air inlet; A sand and dust collector is connected to the bottom of the cylinder and is used to collect sand and dust from the cylinder.

2. The dust-proof air inlet device according to claim 1, characterized in that: The multiple air inlets have the same height in the vertical direction, and are arranged equidistantly in the circumferential direction of the cylinder.

3. The dust-proof air inlet device according to claim 1, characterized in that: In the vertical direction, the height of the outlet is higher than the height of the air inlet.

4. The dust-proof air inlet device according to claim 1, characterized in that: In the vertical direction, the height of the outlet is lower than the height of the air inlet.

5. The dust-proof air suction port device according to claim 4, characterized in that: A dust outlet is provided at the lowest point of the air outlet pipe located inside the cylinder.

6. The dust-proof air suction port device according to claim 5, characterized in that: The anti-sand and dust air suction port device also includes a connecting pipe, a first end of the connecting pipe is connected to the dust outlet, and a second end of the connecting pipe is located in the sand and dust collector.

7. The dust-proof air inlet device according to claim 1, characterized in that: A filter is provided in the air inlet.

8. The dust-proof air suction port device according to any one of claims 1 to 7, characterized in that: The dust collector includes a reducing pipe and a self-opening and closing component; The first end of the reducing tube is connected to the bottom of the cylinder, the second end of the reducing tube is provided with the self-opening and closing component, and the flow area of the reducing tube gradually decreases from the first end to the second end of the reducing tube; The self-opening and closing component is used to close the second end of the reducing tube when the weight of the sand and dust in the reducing tube is less than a preset weight, and to open the second end of the reducing tube when the weight of the sand and dust in the reducing tube is greater than or equal to the preset weight.

9. The dust-proof air inlet device according to claim 8, characterized in that: The self-opening and closing assembly includes a support member, a connecting member, a sand baffle and a counterweight member; The support member is fixedly connected to the reducing tube; The connecting member is rotatably connected to the supporting member; The sand baffle is fixedly connected to the first end of the connector and is used to open or close the second end of the reducing tube; The counterweight is fixedly or detachably connected to the second end of the connecting member.

10. A waste heat recovery system, characterized in that: The invention comprises the anti-sand and dust air suction port device according to any one of claims 1 to 9.

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