Tail gas purification box of enameling machine

Abstract

The utility model discloses a tail gas purification box of an enamelling machine, and relates to the related technical field of enamelled wire production. The device comprises a shell, an inner container, a pretreatment cylinder, a support, a heating pipe and a grating, the inner container is arranged in an inner cavity of the shell in a penetrating mode, heat preservation cotton is arranged between the inner wall of the shell and the outer wall of the inner container, the grating is fixed to the inner wall of the inner container, and the heating pipe is fixed to the portion, above the grating, of the inner wall of the inner container. Two symmetrically-distributed supports are further fixed to the inner wall of the inner container above the heating pipe, containing grooves are formed in the supports at equal intervals, and catalysts are arranged in the containing grooves; and a ceramic heat accumulator is fixed in the center of the grating in a penetrating manner. By arranging the shell, the inner container, the support, the heating pipe, the grating, the pretreatment barrel, the filter frame and the ceramic heat accumulator, the problems that a conventional tail gas treatment mode is not thorough in tail gas purification, the treatment capacity in unit time cannot be effectively controlled, a pretreatment function needs to be added, and heat loss is large when tail gas is treated through a combustion method are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of enameled wire production, and in particular relates to an exhaust gas purification box for an enameling machine. Background Technology

[0002] Enameled wire is a major type of winding wire, processed by an enameling machine. It mainly consists of a conductor and an insulation layer. The bare wire is annealed and softened, then undergoes multiple coatings and baking. The production process of enameled wire generates waste gas containing volatile organic compounds (VOCs), particulate matter, and some toxic and harmful substances. This waste gas needs to be purified through appropriate treatment methods, but the following drawbacks still exist in actual purification processes:

[0003] First, conventional exhaust gas treatment devices have difficulty removing harmful organic matter generated during the production of enameled wire and cannot completely eliminate substances harmful to the human body in the exhaust gas, requiring a more thorough purification method.

[0004] Secondly, the exhaust gas produced during the production of enameled wire is harmful. When it enters the treatment device, it should not be introduced in large quantities at once. The amount of gas entering should be controlled to avoid the inability to completely purify the gas when processing large quantities. Instead, it should be introduced into the treatment device continuously in small quantities.

[0005] The exhaust gas treatment of enameling machines usually adopts combustion, adsorption and absorption methods, but each method has certain limitations or drawbacks. A single treatment method cannot guarantee perfect treatment, lacks pretreatment function, and cannot combine multiple treatment methods.

[0006] Finally, the combustion method usually requires high temperatures to decompose harmful substances in the exhaust gas, but heat energy is lost quickly and the treatment cost is high. Therefore, heat energy loss should be minimized as much as possible. Utility Model Content

[0007] The purpose of this utility model is to provide an exhaust gas purification box for an enameling machine. By setting up an outer shell, inner liner, bracket, heating tube, grille, pretreatment cylinder, filter frame, and ceramic heat storage body, it solves the problems of conventional exhaust gas treatment methods not being thorough enough in purifying exhaust gas, the inability to effectively control the processing volume per unit time during exhaust gas purification, the inability of a single exhaust gas purification process to meet actual treatment needs, the need to add a pretreatment function, and the large heat loss when treating exhaust gas by combustion.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model relates to an exhaust gas purification box for an enameling machine, comprising an outer shell, an inner liner, a pretreatment cylinder, a support, a heating tube, and a grid. The inner liner is disposed through the inner cavity of the outer shell. Insulation cotton is disposed between the inner wall of the outer shell and the outer wall of the inner liner. A grid is fixed on the inner wall of the inner liner, and a U-shaped heating tube is fixed on the inner wall of the inner liner above the grid. Two symmetrically distributed supports are also fixed on the inner wall of the inner liner above the heating tube, and equidistant receiving slots are opened in the supports. Catalysts are disposed in the receiving slots. A ceramic heat storage body is fixed through the center of the grid.

[0010] A pretreatment cylinder is provided below the outer shell, and a filter frame is provided in the lower part of the inner cavity of the pretreatment cylinder.

[0011] Furthermore, the upper end of the inner liner is provided with an exhaust port, which extends through the upper end of the outer shell, and the lower end of the inner liner is provided with an exhaust gas inlet, which extends through the lower end of the outer shell.

[0012] Furthermore, a threaded ring is fixed to the upper end of the pretreatment cylinder, and a threaded opening is fixed to the bottom of the outer shell. The pretreatment cylinder is screwed into the threaded opening through the threaded ring and threadedly connected to the outer shell. The exhaust gas inlet is connected to the inside of the pretreatment cylinder.

[0013] Furthermore, filter screens are fixed inside both the upper and lower ports of the filter frame, and activated carbon is arranged at equal intervals between the two layers of filter screens. A support ring is fixed on the inner wall of the pretreatment cylinder, and the filter frame is placed on the support ring.

[0014] Furthermore, the pretreatment cylinder has an inlet at its bottom end, and the inlet, exhaust gas inlet, and exhaust port have the same diameter. The pretreatment cylinder has an inverted bottle-shaped structure, and the inner diameter of the middle part of the pretreatment cylinder is equal to the inner diameter of the middle part of the inner liner. The inner diameters of the inlet, exhaust gas inlet, and exhaust port are smaller than the inner diameters of the middle parts of the pretreatment cylinder and the inner liner.

[0015] Furthermore, the grid has a gap in the middle for the ceramic heat storage body to pass through, and the grid also has through holes that run vertically through it at equal intervals.

[0016] Furthermore, the receiving groove extends through the upper end face of the bracket, and a through groove is also provided downward through the bracket below the receiving groove.

[0017] Furthermore, the upper part of the ceramic heat storage body passes upward through the heating pipe and is located between the two supports; the lower part of the ceramic heat storage body passes through the exhaust gas inlet and extends into the pretreatment box above the filter frame; and the ceramic heat storage body is also provided with equally spaced honeycomb mesh holes.

[0018] This utility model has the following beneficial effects:

[0019] This invention solves the problem of insufficient exhaust gas purification in conventional exhaust gas treatment methods by setting up an outer shell, inner liner, bracket, heating tube, and grille. First, when the flue gas enters the inner liner for treatment, it first passes through the grille to distribute the exhaust gas evenly and direct it upwards. Then, it passes through the heating tube to be heated to above 320°C. Finally, it passes through the catalyst in the bracket for catalytic combustion. This catalyst is a low-temperature metal catalyst that removes fuel and organic matter from the exhaust gas, thereby achieving the purpose of purifying the exhaust gas and making the exhaust gas purification more thorough.

[0020] This invention solves the problem of ineffective control over the amount of exhaust gas processed per unit time during exhaust gas purification by setting up an inner liner, a grille, and a pretreatment cylinder. The inner liner has small-diameter openings at both the top and bottom, which can effectively control the amount of exhaust gas entering. After the exhaust gas undergoes certain pretreatment in the pretreatment cylinder, it can only enter continuously and slowly from the exhaust gas inlet at the bottom of the inner liner, avoiding the problem of too much exhaust gas entering at once and incomplete purification. This effectively controls the amount of exhaust gas entering per unit time, ensuring sufficient time for exhaust gas purification.

[0021] This invention solves the problem that a single exhaust gas purification process cannot meet actual treatment needs and requires the addition of a pretreatment function by setting up a pretreatment cylinder and a filter frame. Before exhaust gas purification, it is introduced into the pretreatment cylinder and then into the filter frame for filtration. Utilizing the huge specific surface area and abundant microporous structure of activated carbon, organic matter in the enameled wire exhaust gas is physically adsorbed. When the exhaust gas passes through the adsorption bed filled with activated carbon, organic molecules are adsorbed on the surface of the activated carbon, thereby purifying the exhaust gas. Then, it is further filtered by two layers of filter screens to remove particulate matter from the exhaust gas before entering the subsequent catalytic combustion treatment process.

[0022] This invention solves the problem of high heat loss in combustion-based exhaust gas treatment by incorporating a ceramic heat storage body, an outer shell, and an inner liner. The heat generated by the heating element is retained in the inner liner and insulated by the insulation cotton inside the outer shell, reducing heat loss. The small-diameter openings at the top and bottom of the inner liner further reduce heat loss. Combined with the ceramic heat storage body, the heat is retained and a portion is transferred to the pretreatment cylinder to preheat the exhaust gas, thus effectively utilizing the heat. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0024] Figure 1 A three-dimensional view of the exhaust gas purification box of an enameling machine;

[0025] Figure 2This is a cross-sectional view of the exhaust gas purification box of an enameling machine;

[0026] Figure 3 This is a cross-sectional view of the outer shell and inner liner;

[0027] Figure 4 This is a structural diagram of the grille;

[0028] Figure 5 A diagram showing the state of the support and whether or not a catalyst is placed inside it;

[0029] Figure 6 This is a cross-sectional view of the pretreatment cylinder;

[0030] Figure 7 This is a cross-sectional view of the filter box;

[0031] Figure 8 This is a structural diagram of a ceramic heat storage body.

[0032] Figure label:

[0033] 1. Outer shell; 101. Insulation cotton; 102. Threaded opening; 2. Inner liner; 201. Exhaust gas inlet; 202. Exhaust port; 3. Pretreatment cylinder; 301. Support ring; 302. Inlet; 303. Threaded ring; 4. Bracket; 401. Catalyst; 402. Receiving tank; 403. Through groove; 5. Heating tube; 6. Grille; 601. Through hole; 7. Ceramic heat storage body; 701. Honeycomb mesh; 8. Filter frame; 801. Filter screen; 802. Activated carbon. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0035] Please see Figure 1-8 As shown, this utility model is a tail gas purification box for an enameling machine, including an outer shell 1, an inner liner 2, a pretreatment cylinder 3, a support 4, a heating tube 5, and a grid 6. The inner liner 2 is disposed through the inner cavity of the outer shell 1. Insulation cotton 101 is disposed between the inner wall of the outer shell 1 and the outer wall of the inner liner 2. The grid 6 is fixed on the inner wall of the inner liner 2, and a U-shaped heating tube 5 is fixed on the inner wall of the inner liner 2 above the grid 6. Two symmetrically distributed supports 4 are also fixed on the inner wall of the inner liner 2 above the heating tube 5. The supports 4 have equidistant receiving grooves 402, and the receiving grooves 402 are disposed in the receiving grooves 402. A ceramic heat storage body 7 is fixed through the center of the grid 6.

[0036] An inner liner 2 is installed inside the outer shell 1, and insulation cotton 101 is placed between the two to keep the inner liner 2 warm and reduce heat loss. At the same time, when the exhaust gas enters the inner liner 2 for treatment, it is evenly distributed by the through holes 601 in the grille 6 to avoid concentrated flow. Then the heating tube 5 works, heating the flue gas to above 320°C. The flue gas then undergoes catalytic combustion through the catalyst 401 in the support 4. The catalyst 401 is a low-temperature metal catalyst 401, which removes fuel and organic matter from the exhaust gas, thereby achieving the purpose of purifying the exhaust gas. Meanwhile, some of the heat around the heating tube 5 is stored by the ceramic heat storage body 7, reducing heat loss.

[0037] A pretreatment cylinder 3 is provided below the outer shell 1, and a filter frame 8 is provided in the lower part of the inner cavity of the pretreatment cylinder 3;

[0038] The pretreatment cylinder 3 is used for pretreatment of exhaust gas. Together with the filter frame 8 and its internal components, it filters and adsorbs solid particulate matter in the exhaust gas.

[0039] The inner liner 2 has an exhaust port 202 at its upper end, and the exhaust port 202 passes through the upper end of the outer shell 1. The inner liner 2 has an exhaust gas inlet 201 at its lower end, and the exhaust gas inlet 201 passes through the lower end of the outer shell 1.

[0040] The exhaust gas, after being pre-treated by the pretreatment cylinder 3, will enter the inner liner 2 through the exhaust gas inlet 201. After being processed by numerous components in the inner liner 2, it will be discharged from the exhaust port 202.

[0041] The upper end of the pretreatment cylinder 3 is fixed with a threaded ring 303, the bottom of the outer shell 1 is fixed with a threaded opening 102, and the pretreatment cylinder 3 is threadedly connected to the outer shell 1 by screwing the threaded ring 303 into the threaded opening 102, and the exhaust gas inlet 201 is connected to the inside of the pretreatment cylinder 3.

[0042] The filter frame 8 has a filter screen 801 fixed inside both the upper and lower ports. Activated carbon 802 is arranged at equal intervals between the two layers of filter screen 801. A support ring 301 is fixed on the inner wall of the pretreatment cylinder 3. The filter frame 8 is placed on the support ring 301. An inlet 302 is provided at the bottom of the pretreatment cylinder 3.

[0043] First, the filter frame 8 is placed on the support ring 301 inside the pretreatment cylinder 3. Activated carbon 802 is placed inside the filter frame 802, and filter screens 801 are distributed above and below the activated carbon 802. Then, the threaded ring 303 at the upper end of the pretreatment cylinder 3 is threadedly connected to the threaded port 102 at the bottom of the outer shell 1. Subsequently, untreated exhaust gas is introduced from the inlet 302 into the pretreatment cylinder 3. Utilizing the large specific surface area and abundant microporous structure of the activated carbon 802, the organic matter in the enameled wire exhaust gas is physically adsorbed. When the exhaust gas passes through the adsorption bed filled with activated carbon 802, the organic matter molecules are adsorbed on the surface of the activated carbon 802, thereby purifying the exhaust gas. Then, it is further filtered by two layers of filter screens 801 to remove particulate matter from the exhaust gas before entering the inner liner 2 for subsequent catalytic combustion treatment.

[0044] The inlet 302, exhaust inlet 201, and exhaust port 202 have the same diameter. The pretreatment cylinder 3 has an inverted bottle-shaped structure. The inner diameter of the middle part of the pretreatment cylinder 3 is equal to the inner diameter of the middle part of the inner liner 2. The inner diameter of the inlet 302, exhaust inlet 201, and exhaust port 202 is smaller than the inner diameter of the middle part of the pretreatment cylinder 3 and the inner liner 2. The amount of exhaust gas entering should be controlled as much as possible to avoid an excessive amount entering at one time that cannot be processed in time.

[0045] The grille 6 has a gap in the middle for the ceramic heat storage body 7 to pass through, and the grille 6 also has through holes 601 that are evenly spaced in the upper and lower parts; the through holes 601 are used to evenly distribute the exhaust gas entering the inner liner 2 upward.

[0046] The receiving tank 402 penetrates the upper end face of the support 4, and a through groove 403 is also provided in the support 4 below the receiving tank 402; the through groove 403 is used to connect to the bottom, so that it has enough heat to contact the catalyst 401 and catalytically combust the exhaust gas.

[0047] The upper part of the ceramic heat storage body 7 passes through the heating pipe 5 and is located between the two supports 4; the lower part of the ceramic heat storage body 7 passes through the exhaust gas inlet 201 and extends into the pretreatment box above the filter frame 8. The ceramic heat storage body 7 is also provided with equally spaced honeycomb mesh holes 701; the heat is effectively stored and the heat is conducted to the pretreatment cylinder 3.

[0048] The specific working principle of this utility model is as follows: First, the filter frame 8 is placed on the support ring 301 inside the pretreatment cylinder 3, and activated carbon 802 is placed inside it. Then, the threaded ring 303 at the upper end of the pretreatment cylinder 3 is threadedly connected to the threaded opening 102 at the bottom of the outer shell 1. Untreated exhaust gas is introduced into the pretreatment cylinder 3 through the inlet 302. Utilizing the huge specific surface area and rich microporous structure of the activated carbon 802, the organic matter in the enameled wire exhaust gas is physically adsorbed. Then, it is further filtered by two layers of filter screens 801 to remove particulate matter from the exhaust gas. Finally, the exhaust gas enters the inner liner through the exhaust gas inlet 201. In step 2, the flue gas is evenly distributed through the through holes 601 in the grille 6 to avoid concentrated flow. Then, the heating tube 5 works, heating the flue gas to above 320°C. The flue gas then undergoes catalytic combustion through the catalyst 401 in the support 4, thereby achieving the purpose of purifying the exhaust gas. At the same time, some of the heat around the heating tube 5 is stored by the ceramic heat storage body 7 and then introduced into the pretreatment cylinder 3 to preheat the subsequent exhaust gas, achieving effective utilization of heat energy. Meanwhile, the outer shell 1 is also equipped with heat insulation cotton 101 for heat preservation, reducing heat loss. Finally, the treated exhaust gas is discharged from the exhaust port 202.

[0049] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A tail gas purification box for an enameling machine, comprising an outer shell (1), an inner liner (2), a pretreatment cylinder (3), a support (4), a heating tube (5), and a grille (6), characterized in that: An inner liner (2) is provided through the inner cavity of the outer shell (1). Insulation cotton (101) is provided between the inner wall of the outer shell (1) and the outer wall of the inner liner (2). A grid (6) is fixed on the inner wall of the inner liner (2). A U-shaped heating tube (5) is fixed on the inner wall of the inner liner (2) above the grid (6). Two symmetrically distributed supports (4) are also fixed on the inner wall of the inner liner (2) above the heating tube (5). A receiving groove (402) is provided at equal intervals in the support (4). A catalyst (401) is provided in the receiving groove (402). A ceramic heat storage body (7) is fixed through the center of the grid (6). A pretreatment cylinder (3) is provided below the outer shell (1), and a filter frame (8) is provided in the lower part of the inner cavity of the pretreatment cylinder (3).

2. The exhaust gas purification box for an enameling machine according to claim 1, characterized in that: The inner liner (2) has an exhaust port (202) at its upper end, and the exhaust port (202) passes through the upper end of the outer shell (1). The inner liner (2) has an exhaust gas inlet (201) at its lower end, and the exhaust gas inlet (201) passes through the lower end of the outer shell (1).

3. The exhaust gas purification box for an enameling machine according to claim 2, characterized in that: The upper end of the pretreatment cylinder (3) is fixed with a threaded ring (303), the bottom of the outer shell (1) is fixed with a threaded opening (102), and the pretreatment cylinder (3) is screwed into the threaded opening (102) through the threaded ring (303) and threadedly connected to the outer shell (1), and the exhaust gas inlet (201) is connected to the inside of the pretreatment cylinder (3).

4. The exhaust gas purification box for an enameling machine according to claim 1, characterized in that: The filter frame (8) has a filter screen (801) fixed inside both the upper and lower ports. Activated carbon (802) is arranged at equal intervals between the two filter screens (801). A support ring (301) is fixed on the inner wall of the pretreatment cylinder (3). The filter frame (8) is placed on the support ring (301).

5. The exhaust gas purification box for an enameling machine according to claim 2, characterized in that: The pretreatment cylinder (3) has an inlet (302) at its bottom end. The inlet (302), exhaust gas inlet (201), and exhaust port (202) have the same diameter. The pretreatment cylinder (3) has an inverted bottle-shaped structure. The inner diameter of the middle part of the pretreatment cylinder (3) is the same as the inner diameter of the middle part of the inner liner (2). The inner diameter of the inlet (302), exhaust gas inlet (201), and exhaust port (202) is smaller than the inner diameter of the middle part of the pretreatment cylinder (3) and the inner liner (2).

6. The exhaust gas purification box for an enameling machine according to claim 1, characterized in that: The grid (6) has a gap in the middle for the ceramic heat storage body (7) to pass through, and the grid (6) also has through holes (601) that run vertically through it at equal intervals.

7. The exhaust gas purification box for an enameling machine according to claim 1, characterized in that: The receiving groove (402) penetrates the upper end face of the bracket (4), and a through groove (403) is also provided downward through the bracket (4) below the receiving groove (402).

8. The exhaust gas purification box for an enameling machine according to claim 2, characterized in that: The upper part of the ceramic heat storage body (7) passes through the heating pipe (5) and is located between the two supports (4); the lower part of the ceramic heat storage body (7) passes through the exhaust gas inlet (201) and extends into the pretreatment box above the filter frame (8); the ceramic heat storage body (7) is also provided with equally spaced honeycomb mesh holes (701).

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