Dust hood
By installing a water collection tank and drainage system inside the dust collection hood, and combining the Coanda effect to collect condensate, the corrosion problem of the dust collection hood is solved, and the equipment protection effect is improved.
Patent Information
- Application Number
- CN202422478449.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-10-14
AI Technical Summary
Existing dust hoods are prone to corrosion when exposed to condensation, which affects their service life. Furthermore, the condensation cannot be effectively collected, leading to corrosion of surrounding equipment.
Design a dust collection hood that combines a water collection tank and the Coanda effect. The water collection tank collects condensate, and a drain pipe and heater prevent condensate from spilling, thus improving equipment protection.
It effectively collects condensate, prevents equipment corrosion, extends the service life of the dust collection hood, and ensures equipment safety.
Smart Images
Figure CN223717966U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a smoke dust collection and treatment technical field, especially a kind of dust hood. BACKGROUND
[0002] Dust hood is the smoke dust suction component of dust removal system, dust hood is often arranged at the smoke discharge of equipment or system, for the subsequent processing process after the smoke discharged is sucked, but there can be excessive water vapor in the smoke discharged, for example, in the dry quenching field, the smoke discharged during oven period will contain more water vapor, water vapor forms condensate after being discharged and cooled in dust hood, and the material of conventional dust hood is Q235B (carbon structural steel), corrosion and rust often occur after being contacted with water, affect the service life of dust hood, even if high-temperature anticorrosive paint is coated as required, it cannot completely avoid such situation from occurring, even if the material of dust hood is changed to stainless steel, but because condensate cannot be effectively collected, it still causes corrosion when scattering on the equipment around dust hood.
[0003] Therefore, people urgently need a dust hood that can collect condensate and improve the protection effect on the equipment around the dust hood. SUMMARY
[0004] The utility model discloses a dust hood to solve the above-mentioned prior art problems, utilize the conda effect of water collecting tank to cooperate with dust hood, realize the collection of condensate, prevent it from scattering to the surrounding equipment, and improve the protection effect on the surrounding equipment.
[0005] To achieve the above object, the utility model provides the following scheme: the utility model provides a dust hood, including dust hood body and water collecting tank, the top or side wall of dust hood body is provided with air outlet, the bottom of dust hood body is provided with air inlet, the water collecting tank is the annular structure matched with the inner wall bottom of dust hood body, the water collecting tank is arranged at the inner wall bottom of dust hood body, and the horizontal height of water collecting tank is lower than the horizontal height of air outlet.
[0006] Preferably, the bottom of the water collecting tank is provided with a drain pipe for discharging condensate in the water collecting tank, and a drain valve is arranged on the drain pipe.
[0007] Preferably, a filter screen is arranged at the communication port of the water collecting tank and the drain pipe.
[0008] Preferably, the inner bottom wall of the water collecting tank is inclined, and the position corresponding to the drain pipe of the inner bottom wall of the water collecting tank is the lowest end of the inclined inner bottom wall of the water collecting tank.
[0009] Preferably, the water collecting tank is welded on the inner circumferential wall of the dust hood body.
[0010] Preferably, when the air outlet is arranged on the side wall of the dust cover body, the inner top wall of the dust cover body is an arc surface structure or an inclined surface structure for the condensed water to flow along the wall surface, and the concave surface of the arc surface structure or the inclined surface of the inclined surface structure corresponds to the air outlet.
[0011] Preferably, the air outlet is communicated with a dust removal horizontal pipe, a cut-off valve is arranged on the dust removal horizontal pipe, and a drain valve is arranged at the bottom of the dust removal horizontal pipe between the air outlet and the cut-off valve.
[0012] Preferably, when the air outlet is arranged on the top of the dust cover body, the inner top wall of the dust cover body is a frustum.
[0013] Preferably, the material of the water collecting groove is a heat-conducting metal, and a heater is arranged at the bottom of the water collecting groove.
[0014] Preferably, a support is arranged at the bottom of the dust cover body.
[0015] Compared with the prior art, the utility model mainly obtains the following technical effects:
[0016] The condensed water flows downward along the inner circumferential wall of the dust cover body due to the Coanda effect, the water collecting groove arranged at the bottom of the inner circumferential wall can collect the condensed water, prevent the condensed water from directly falling on the surrounding equipment of the dust cover body, and improve the protection effect on the surrounding equipment.
[0017] Compared with the prior art, the other schemes of the utility model obtain the following technical effects:
[0018] The water collecting groove arranged in the inclined inner bottom wall cooperates with the arrangement of the drain pipe to conveniently drain the condensed water in the water collecting groove and prevent the water collecting groove from overflowing due to storage.
[0019] The arrangement of the heater can prevent the condensed water in the water collecting groove from freezing and being unable to drain out in a cold environment, and ensure the drainage effect of the water collecting groove. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.
[0021] Fig. 1 Structure schematic view of the embodiment in which the air outlet is arranged on the top of the dust cover body;
[0022] Fig. 2 In the embodiment in which the air outlet is arranged on the top of the dust cover body, the top view of the dust cover body after hiding the frustum structure.
[0023] Fig. 3 Structure schematic view of the embodiment that the air outlet is arranged at the side wall of the dust suction cover body of the utility model;
[0024] Fig. 4 In the embodiment that the air outlet is arranged at the side wall of the dust suction cover body, the right view after the side wall plate of the dust suction cover body hides the dust removal horizontal pipe;
[0025] Fig. 5 In the embodiment that the air outlet is arranged at the side wall of the dust suction cover body, the plan view after the top wall plate and the arc plate of the dust suction cover body hide;
[0026] Wherein, 1, dust suction cover body;2, water collecting tank;3, drain pipe;4, drain valve;5, arc plate;6, dust removal horizontal pipe;7, support;8, air inlet;9, air outlet;10, filter screen;11, drain valve;12, cut-off valve. Specific implementation
[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0028] The utility model aims at providing a dust suction cover to solve the problems in the prior art, which utilizes the coanda effect of the water collecting tank and the dust suction cover to realize the collection of condensed water, prevents the condensed water from scattering to surrounding equipment, and improves the protection effect on the surrounding equipment.
[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below in combination with the drawings and specific implementation.
[0030] Please refer to the drawings of the utility model Figs. 1-5As shown, a dust cover is provided, comprising a dust cover body 1 and a water collecting tank 2, the top or side wall of the dust cover body 1 is provided with an air outlet 9, the bottom of the dust cover body 1 is provided with an air inlet 8, the water collecting tank 2 is in the form of a ring structure matched with the bottom of the inner circumferential wall of the dust cover body 1, specifically: when the inner circumferential wall of the dust cover body 1 is in the form of a cylinder, the water collecting tank 2 is in the form of a circular ring; when the inner circumferential wall of the dust cover body 1 is in the form of a square cylinder, the water collecting tank 2 is in the form of a square ring; when the inner circumferential wall of the dust cover body 1 is in the form of a circular truncated cone or a square truncated cone, the water collecting tank 2 is in the form of a circular ring or a square ring; the water collecting tank 2 is arranged at the bottom of the inner circumferential wall of the dust cover body 1, the water collecting tank 2 is located on the condensate water flow path generated by the Coanda effect of the inner circumferential wall of the dust cover body 1, and the horizontal height of the water collecting tank 2 is lower than the horizontal height of the air outlet 9. The principle of the device is: the condensate water will flow downward along the inner circumferential wall of the dust cover body 1 due to the Coanda effect, and the water collecting tank 2 arranged at the bottom of the inner circumferential wall can collect the condensate water, preventing it from directly falling on the surrounding equipment of the dust cover body 1, thereby improving the protection effect on the surrounding equipment.
[0031] The material of the overall dust cover body 1 is stainless steel, which improves the service life.
[0032] The specific forming mode of the tank body of the water collecting tank 2 can be: directly forming a ring-shaped U-shaped tank body structure by using a ring-shaped U-shaped plate; or two vertical ring-shaped plates are connected at both ends of a horizontal ring-shaped plate to form a ring-shaped U-shaped tank body structure; or one vertical ring-shaped plate is connected at one end of a horizontal ring-shaped plate, and the other end of the horizontal ring-shaped plate is directly connected to the inner circumferential wall of the dust cover body 1, that is, a ring-shaped U-shaped tank body structure is formed by using the inner circumferential wall of the dust cover body 1 and one vertical ring-shaped plate connected at both ends of a horizontal ring-shaped plate.
[0033] In order to improve the structural stability, the water collecting tank 2 is welded on the inner circumferential wall of the dust cover body 1; when the tank body of the water collecting tank 2 is directly formed by using a ring-shaped U-shaped plate, the outer circumferential wall of the U-shaped plate is welded with the inner circumferential wall of the dust cover body 1; when the tank body of the water collecting tank 2 is formed by connecting two vertical ring-shaped plates and a horizontal ring-shaped plate, the vertical ring-shaped plate close to the inner circumferential wall of the dust cover body 1 is welded with the inner circumferential wall of the dust cover body 1; when the tank body of the water collecting tank 2 is formed by connecting one vertical ring-shaped plate, one horizontal ring-shaped plate and the inner circumferential wall of the dust cover body 1, the end of the horizontal ring-shaped plate away from the vertical ring-shaped plate is welded with the inner circumferential wall of the dust cover body 1. When welding, it should be ensured that the entire ring-shaped connecting surface is welded to avoid the formation of gaps in the un-welded parts, so that the condensate water directly seeps out from the gaps in the un-welded parts and falls on the surrounding equipment.
[0034] Since the capacity of the water collecting tank 2 is certain and the condensed water is continuously generated, a drain pipe 3 is arranged at the bottom of the water collecting tank 2. Specifically, a drain hole is arranged on the inner bottom wall of the water collecting tank 2, and the drain pipe 3 is communicated with the drain hole. The drain pipe 3 can be integrally formed on the water collecting tank 2. The drain pipe 3 is used to drain the condensed water in the water collecting tank 2. A drain valve 4 is arranged on the drain pipe 3. By opening the drain valve 4, the condensed water in the water collecting tank 2 can be drained by the drain pipe 3.
[0035] When the condensed water is drained by the drain pipe 3, a liquid containing device such as a transfer bucket can be placed below the drain pipe 3. The condensed water can be directly drained into the liquid containing device by the drain pipe 3 for transfer. Alternatively, a hose is connected to the bottom of the drain pipe 3. The condensed water drained by the drain pipe 3 can be directly drained into a nearby drainage point by the hose.
[0036] A filter screen 10 can be arranged at the communication port between the water collecting tank 2 and the drain pipe 3 to intercept dirt. The filter screen 10 can be regularly cleaned to prevent the drain pipe 3 from being blocked.
[0037] In order to facilitate the drainage of the condensed water in the water collecting tank 2, the inner bottom wall of the water collecting tank 2 is inclined. The position of the inner bottom wall of the water collecting tank 2 corresponding to the drain pipe 3 is the lowest end of the inclined inner bottom wall of the water collecting tank 2. Specifically, since the entire inner bottom wall of the water collecting tank 2 is annular, in order to make the drain pipe 3 as the lowest point, at least two downward inclined paths are required. The highest points of the two paths coincide, and the lowest points coincide at the drain pipe 3. The inclination angle of each downward inclined path is 2-5°. If there are multiple downward inclined paths, they can be divided into two inclined parts. The highest points of the two inclined parts coincide, and the lowest points coincide at the drain pipe 3. In the inclined part with multiple downward inclined paths, the low end of one downward inclined path coincides with the high end of another downward inclined path, forming an inclined path with varying slope.
[0038] When the air outlet 9 is arranged on the side wall of the dust cover body 1, the inner top wall of the dust cover body 1 is in an arc surface structure or an inclined surface structure. The arc surface structure or the inclined surface structure is arranged to allow the condensed water condensed on the inner top wall to flow along the wall surface instead of directly dropping. The concave surface of the arc surface structure or the inclined surface of the inclined surface structure is arranged corresponding to the air outlet 9 to play a certain flow guiding role.
[0039] The top wall plate of the dust cover body 1 can be directly arranged as an arc plate 5 or an inclined plate to form an arc surface structure or an inclined surface structure inner top wall. Alternatively, an arc plate 5 or an inclined plate can be arranged in the dust cover body 1 to replace the inner top wall of the dust cover body 1.
[0040] In the embodiment, the air outlet 9 is arranged on the side wall of the dust cover body 1, the dust cover body 1 is a square tube structure, and the dust cover body 1 is surrounded by four side wall plates and a top wall plate, wherein the air outlet 9 is arranged on one of the side wall plates, and the arc plate 5 is arranged in the dust cover body 1 to replace the inner top wall of the dust cover body 1.
[0041] When the air outlet 9 is arranged on the side wall, the air outlet 9 needs to be communicated with the transversely arranged dust removal horizontal pipe 6, the dust removal horizontal pipe 6 is provided with a cut-off valve 12, the bottom of the dust removal horizontal pipe 6 between the air outlet 9 and the cut-off valve 12 is provided with a drain valve 11, and the drain valve 11 is used for draining the condensed water in the dust removal horizontal pipe 6.
[0042] When the air outlet 9 is arranged on the top of the dust cover body 1, the inner top wall of the dust cover body 1 is in a conical frustum type, and the conical frustum type inner top wall provides a movement path for the condensed water, so that the condensed water is prevented from directly dropping downward.
[0043] In the embodiment, when the air outlet 9 is arranged on the top of the dust cover body 1, the dust cover body 1 comprises a square tube structure and a conical frustum structure, the top of the square tube structure is communicated with the large end of the conical frustum structure, and the small end of the conical frustum structure is the air outlet 9.
[0044] Since the ambient temperature changes continuously, when the ambient temperature is low, the condensed water in the water collecting groove 2 may be frozen, and the frozen condensed water cannot be effectively drained. Therefore, the material of the water collecting groove 2 is a heat-conducting metal, preferably stainless steel, and a heater is arranged at the bottom of the water collecting groove 2. The heater can be an electric heating tape or other equipment that can achieve heating. The heater can provide heat for the water collecting groove 2, and the heat can be used to melt the frozen condensed water, so that the condensed water can be normally drained.
[0045] In the field of dry quenching, the dust cover body 1 needs to be arranged at the pre-storage chamber smoke exhaust pipe and the circulating fan smoke exhaust pipe, that is, the pre-storage chamber smoke exhaust pipe and the circulating fan smoke exhaust pipe extend into the dust cover body 1, and the dust cover body 1 needs to be arranged at the bottom of the dust cover body 1. The support 7 supports and positions the position, and the support 7 needs to avoid the drain pipe 3.
[0046] In actual use, the condensed water moves downward along the inner circumferential wall of the dust cover body 1 according to the Coanda effect, is intercepted and collected by the water collecting groove 2, and the collected condensed water can be drained from the drain pipe 3.
[0047] According to actual needs, adaptive changes are made within the protection scope of the utility model.
[0048] It should be noted that, for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.
[0049] The principles and implementation modes of the present application are described by applying specific examples in the present application. The above embodiment description is only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there will be changes in specific implementation modes and application ranges. In conclusion, the content of the present application should not be understood as a limitation of the present application.
Claims
1. A dust extraction hood, characterized in that The dust suction cover body is provided with an air outlet at the top or sidewall, and an air inlet at the bottom, and the water collecting tank is in the form of a ring structure matching the inner circumferential wall bottom of the dust suction cover body, is arranged at the inner circumferential wall bottom of the dust suction cover body, and has a horizontal height lower than that of the air outlet; the water collecting tank is made of heat-conducting metal, and is provided with a heater at the bottom.
2. The dust cup according to claim 1, characterized by The water collecting tank is provided with a drain pipe for discharging condensed water in the water collecting tank, and the drain pipe is provided with a drain valve.
3. The dust cup according to claim 2, characterized by A filter screen is arranged at the communication opening of the water collecting tank and the drain pipe.
4. The dust cup according to claim 2, wherein The inner bottom wall of the water collecting tank is arranged in an inclined manner, and the lowest end of the inclined inner bottom wall of the water collecting tank corresponds to the position of the drain pipe.
5. The dust cup according to claim 1, wherein The water collecting tank is welded to the inner circumferential wall of the dust suction cover body.
6. The dust cup according to claim 1, wherein When the air outlet is arranged on the sidewall of the dust suction cover body, the inner top wall of the dust suction cover body is in the form of an arc surface structure or an inclined surface structure for the condensed water to flow along the wall surface, and the concave surface of the arc surface structure or the inclined surface of the inclined surface structure corresponds to the air outlet.
7. The dust cup according to claim 6, characterized by The air outlet is communicated with a dust removal horizontal pipe, the dust removal horizontal pipe is provided with a cut-off valve, and the dust removal horizontal pipe between the cut-off valve and the air outlet is provided with a drain valve at the bottom.
8. The dust cup according to claim 1, characterized by When the air outlet is arranged on the top of the dust suction cover body, the inner top wall of the dust suction cover body is in the form of a frustum.
9. The dust cup according to claim 1, characterized by The bottom of the dust suction cover body is provided with a support.