A waste gas flow distribution device

Abstract

This utility model relates to a waste gas flow equalization distributor, comprising: a primary flow equalization component inserted into the air inlet of a bag filter, one end of which guides the waste gas to flow evenly and evenly, and the other end of which guides the waste gas to be discharged in a ring-shaped even distribution; and a locking component, which is threadedly connected to the outside of the primary flow equalization component. The locking component adjusts the installation depth of the primary flow equalization component horizontally via a screw and is fixedly connected to the bag filter. This utility model, through the flow distribution cavity and through hole of the primary flow equalization component, evenly distributes the waste gas at the inlet of the flow distribution cavity while simultaneously discharging the waste gas evenly in a ring-shaped manner at the annularly distributed outlet of the flow distribution cavity. The threaded ring can horizontally adjust the position of the locking component on the outside of the primary flow equalization component, changing the depth of the primary flow equalization component inserted into the bag filter, so that the through hole of the primary flow equalization component can be aligned with the center of the bag filter, and the waste gas discharged along the flow distribution cavity can be evenly distributed within the bag filter.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a waste gas flow equalization distributor. Background Technology

[0002] Resin sand casting is a precision casting process that uses synthetic resin as a binder and quartz sand as aggregate. The resin and curing agent are evenly mixed by a sand mixer and then filled into a mold. After being cured at high temperature, a high-strength mold is formed. It is suitable for the production of complex thin-walled castings. Its core advantages are high mold dimensional accuracy, good surface finish, and no need for a demolding process, which can significantly reduce machining allowance.

[0003] Resin sand casting generates waste gas containing formaldehyde, benzene compounds, and other substances during processing. This waste gas is recovered by a negative pressure gas collection system and then passes through a bag filter or cyclone dust collector to remove particulate matter and catalytically decompose VOCs. If the waste gas contains acidic substances, it also needs to be treated by an alkaline spray tower. During the waste gas treatment process, the inventors discovered that the air inlet of the existing bag filter is located on the side of the inclined end. When the waste gas flows along the air inlet of the bag filter, the waste gas will be unevenly distributed inside the bag filter, resulting in some filter bags being overloaded, accelerating wear, and reducing dust removal efficiency. Utility Model Content

[0004] Based on the above description, this utility model provides a waste gas flow equalization distributor to solve the problem that when the air inlet of a bag filter is located on the side of the inclined end, the waste gas will be unevenly distributed inside the bag filter when it flows along the air inlet of the bag filter, resulting in some filter bags being overloaded, accelerated wear, and reduced dust removal efficiency.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a waste gas flow equalization distributor, comprising: a primary flow equalization component inserted into the air inlet of a bag filter, one end of the primary flow equalization component is used to guide the waste gas to flow evenly, and the other end of the primary flow equalization component is used to guide the waste gas to be discharged in a ring-shaped even distribution. A locking component is threadedly connected to the outside of the primary flow equalization component. The locking component adjusts the installation depth of the primary flow equalization component horizontally via a screw and is fixedly connected to the bag filter.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the primary flow equalization component includes a flow equalization pipe, a through hole, a flow distribution cavity, and a threaded groove. The flow equalization pipe is cylindrical, with one end inserted into the air inlet of the bag filter. The other end of the flow equalization pipe is semi-circular and faces the center of the bag filter. The threaded groove is formed on the outside of the flow equalization pipe.

[0008] Furthermore, the through hole is opened at one end of the semi-circular flow equalization tube, and the center of the through hole coincides with the center of the semi-circular end of the flow equalization tube. The through hole is perpendicular to the two ends of the bag filter.

[0009] Furthermore, the flow distribution channels are evenly distributed at one end of the flow equalization pipe away from the through hole, and the other end of the flow distribution channels is connected to the through hole and evenly distributed inside the through hole.

[0010] Furthermore, a connecting rod is fixedly connected to the end of the flow equalization tube away from the through hole, and a secondary flow equalization component is integrally formed at the end of the connecting rod away from the flow equalization tube. The secondary flow equalization component is cylindrical and its end face coincides with the end face of the flow equalization tube.

[0011] Furthermore, the locking component includes a threaded ring, a collar, a sleeve, a washer, and a mounting hole. The threaded ring is threadedly connected to the threaded groove, and the collar is fixedly connected to one end of the threaded ring near the secondary flow equalizer.

[0012] Furthermore, the sleeve is inserted into the outside of the flow equalization pipe and fixedly connected to the end of the collar near the secondary flow equalization component. The end of the sleeve near the secondary flow equalization component is inclined and parallel to the inner wall of the conical end of the bag filter. The axes of the threaded ring, the collar and the sleeve coincide with each other.

[0013] Furthermore, the gasket is integrally formed at the inclined end of the sleeve and inserted into the outside of the flow equalization pipe. The gasket fits against the inner wall of the conical end of the bag filter, and the mounting hole is formed on the surface of the gasket.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: This invention utilizes the diversion channels and through holes of the primary flow equalization component. While the waste gas is evenly distributed at the inlet of the diversion channel, the annularly distributed outlets of the diversion channel allow the waste gas to be discharged evenly in a ring. With the help of a locking component, the threaded ring of the threaded connection can horizontally adjust the position of the locking component outside the primary flow equalization component, changing the depth to which the primary flow equalization component extends into the bag filter. This ensures that the through holes of the primary flow equalization component are aligned with the center of the bag filter, allowing the waste gas discharged along the diversion channels to be evenly distributed within the bag filter. The waste gas passes evenly through each filter bag, achieving uniform filter bag wear and effectively solving the problem of uneven distribution of resin sand casting waste gas within the bag filter. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a water supply tank for a water plant is provided for an embodiment of this utility model; Figure 2 This is an exploded structural diagram of the locking component and the primary flow equalization component in an embodiment of this utility model; Figure 3 This is a cross-sectional structural diagram of the primary flow equalization element in an embodiment of this utility model; The attached diagram lists the components represented by each number as follows: 1. Primary flow equalization component; 11. Flow equalization pipe; 12. Through hole; 13. Flow dividing cavity; 14. Threaded groove; 2. Connecting rod; 3. Secondary flow equalization component; 4. Locking component; 41. Threaded ring; 42. Shaft collar; 43. Sleeve; 44. Gasket; 45. Mounting hole. Detailed Implementation

[0016] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0018] Please see Figure 1-3 The present invention provides a waste gas flow equalization distributor, comprising: a primary flow equalization component 1 inserted into the air inlet of a bag filter, one end of the primary flow equalization component 1 being used to guide the waste gas to flow evenly, and the other end of the primary flow equalization component 1 being used to guide the waste gas to be discharged in a ring-shaped even distribution. Locking component 4 is threadedly connected to the outside of the primary flow equalizer 1. Locking component 4 adjusts the installation depth of the primary flow equalizer 1 horizontally via a screw and is connected and fixed to the bag filter dust collector.

[0019] Please see Figure 2 The primary flow equalization component 1 includes a flow equalization pipe 11, a through hole 12, a flow distribution channel 13, and a threaded groove 14. The flow equalization pipe 11 is cylindrical, with one end inserted into the air inlet of the bag filter. The other end of the flow equalization pipe 11 is semi-circular and faces the center of the bag filter. The threaded groove 14 is opened on the outside of the flow equalization pipe 11. The cylindrical flow equalization pipe 11 extends the length of the flow distribution channel 13, forming a longer buffer space. This allows the exhaust gas generated by resin sand casting to be fully and effectively evenly distributed when it enters the bag filter through the flow distribution channel 13, reducing the impact force of the exhaust gas on the filter bag.

[0020] Please see Figure 2The through hole 12 is opened at one end of the semicircle of the flow equalization pipe 11, and the center of the through hole 12 coincides with the center of the semicircle of the flow equalization pipe 11. The through hole 12 is perpendicular between the two ends of the bag filter. The through hole 12 defines the discharge position of the exhaust gas, so that the exhaust gas can diffuse evenly toward the interior of the bag filter.

[0021] Please see Figure 3 The diversion channel 13 is evenly opened at one end of the flow equalization pipe 11 away from the through hole 12. The other end of the diversion channel 13 is connected to the through hole 12 and is evenly distributed inside the through hole 12. The diversion channel 13 breaks down the exhaust gas into multiple low-speed airflows, which significantly reduces the impact force of the exhaust gas. At the same time, when the exhaust gas is discharged from the end of the diversion channel 13, it will be discharged in a ring and evenly under the influence of the through hole 12.

[0022] Please see Figure 2 A connecting rod 2 is fixedly connected to the end of the flow equalization pipe 11 away from the through hole 12. A secondary flow equalization component 3 is integrally formed at the end of the connecting rod 2 away from the flow equalization pipe 11. The secondary flow equalization component 3 is cylindrical and its end face coincides with the end face of the flow equalization pipe 11. The surface of the secondary flow equalization component 3 is provided with through holes 12 with a diameter and gap larger than the diversion cavity 13. This can initially equalize the flow of the exhaust gas entering the bag filter, so that the exhaust gas can be more evenly divided after passing through the diversion cavity 13. The integrated design of the connecting rod 2 and the secondary flow equalization component 3 enhances the structural stability.

[0023] Please see Figure 2 The locking component 4 includes a threaded ring 41, a collar 42, a sleeve 43, a washer 44, and a mounting hole 45. The threaded ring 41 is threadedly connected to the threaded groove 14. The collar 42 is fixedly connected to the end of the threaded ring 41 near the secondary flow equalizer 3. The sleeve 43 is inserted into the outside of the flow equalizer 11 and fixedly connected to the end of the collar 42 near the secondary flow equalizer 3. The end of the sleeve 43 near the secondary flow equalizer 3 is inclined and parallel to the inner wall of the conical end of the bag filter. The axes of the threaded ring 41, collar 42, and sleeve 43 coincide. The sleeve 43 is connected to the threaded ring 41 through the collar 42. The collar 42 isolates the sleeve 43 from the threaded ring 41, allowing the sleeve 43 and the threaded ring 41 to be operated independently. When the ring 41 rotates along the threaded groove 14, the operator can control the sleeve 43 to remain stationary, so that the threaded ring 41 drives the sleeve 43 and the gasket 44 to move horizontally outside the primary flow equalizer 1, adjusting the position of the locking member 4. At the same time, the depth of the primary flow equalizer 1 inserted into the bag filter can also be adjusted synchronously with the change in the position of the locking member 4. By adjusting the position of the locking member 4, the through hole 12 of the primary flow equalizer 1 is aligned with the center of the bag filter. The exhaust gas discharged along the diversion channel 13 and the through hole 12 can be evenly distributed along the axis of the bag filter towards other positions. The exhaust gas passes evenly through each filter bag, achieving uniform wear of the filter bags and effectively solving the problem of uneven distribution of resin sand casting exhaust gas in the bag filter.

[0024] Please see Figure 1 The gasket 44 is integrally formed on the inclined end of the sleeve 43 and inserted into the outside of the flow equalization pipe 11. The gasket 44 fits the inner wall of the conical end of the bag filter. The mounting hole 45 is opened on the surface of the gasket 44. The elastic gasket 44 with the mounting hole 45 achieves double sealing. On the one hand, it compensates for the gap between the conical end of the dust collector and the flow equalization pipe 11 to prevent exhaust gas leakage. On the other hand, it disperses the locking stress by fixing with bolts to avoid loosening of the threads caused by long-term vibration of the equipment.

[0025] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waste gas flow equalization distributor, characterized in that, include: A primary flow equalization component (1) is inserted into the air inlet of the bag filter. One end of the primary flow equalization component (1) is used to guide the exhaust gas to flow evenly, and the other end of the primary flow equalization component (1) is used to guide the exhaust gas to be discharged in a ring-shaped and even distribution. Locking component (4) is threadedly connected to the outside of the first-stage flow equalizer (1). The locking component (4) adjusts the installation depth of the first-stage flow equalizer (1) horizontally by means of a screw and is connected and fixed to the bag filter.

2. The exhaust gas flow equalization distributor according to claim 1, characterized in that: The primary flow equalization component (1) includes a flow equalization pipe (11), a through hole (12), a flow distribution channel (13), and a threaded groove (14). The flow equalization pipe (11) is cylindrical, with one end inserted into the air inlet of the bag filter. The other end of the flow equalization pipe (11) is semi-circular and faces the center of the bag filter. The threaded groove (14) is opened on the outside of the flow equalization pipe (11).

3. The waste gas flow equalization distributor according to claim 2, characterized in that: The through hole (12) is opened at one end of the semicircle of the flow equalization pipe (11), and the center of the through hole (12) coincides with the center of the semicircle of the flow equalization pipe (11). The through hole (12) is perpendicular to the two ends of the bag filter.

4. The waste gas flow equalization distributor according to claim 2, characterized in that: The diversion channel (13) is evenly opened at one end of the flow equalization pipe (11) away from the through hole (12), and the other end of the diversion channel (13) is connected to the through hole (12) and is evenly distributed inside the through hole (12).

5. The waste gas flow equalization distributor according to claim 2, characterized in that: A connecting rod (2) is fixedly connected to one end of the flow equalization pipe (11) away from the through hole (12). A secondary flow equalization component (3) is integrally formed on one end of the connecting rod (2) away from the flow equalization pipe (11). The secondary flow equalization component (3) is cylindrical and its end face coincides with the end face of the flow equalization pipe (11).

6. The exhaust gas flow equalization distributor according to claim 5, characterized in that: The locking component (4) includes a threaded ring (41), a collar (42), a sleeve (43), a washer (44), and a mounting hole (45). The threaded ring (41) is threadedly connected to the threaded groove (14), and the collar (42) is fixedly connected to one end of the threaded ring (41) near the secondary flow equalizer (3).

7. The exhaust gas flow distributor according to claim 6, characterized in that: The sleeve (43) is inserted into the outside of the flow equalization pipe (11) and fixedly connected to the end of the collar (42) near the secondary flow equalization component (3). The end of the sleeve (43) near the secondary flow equalization component (3) is inclined and parallel to the inner wall of the conical end of the bag filter. The axes of the threaded ring (41), the collar (42) and the sleeve (43) coincide with each other.

8. The exhaust gas flow equalization distributor according to claim 6, characterized in that: The gasket (44) is integrally formed on the inclined end of the sleeve (43) and inserted into the outside of the flow equalization pipe (11). The gasket (44) fits the inner wall of the conical end of the bag filter. The mounting hole (45) is opened on the surface of the gasket (44).

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