Acid mist negative pressure collection device

Abstract

The utility model discloses a negative pressure acid mist collection device, which relates to the technical field of acid mist collection technology. In view of the problems that the induced draft fan proposed in the background technology is easily corroded by acid mist, causing damage to the induced draft fan, low practicality, sediments easily block the drain pipe, and maintenance is required, and the work efficiency is low, the following scheme is proposed, including a bottom plate, a negative pressure cylinder and a cylinder cover, a vacuum pump is connected to the outer wall of one end of the top of the bottom plate by bolts, and a rotating mechanism is provided in the negative pressure cylinder, and the rotating mechanism includes a rotating motor connected to the outer wall of the bottom of the negative pressure cylinder by bolts, and a rotating shaft and an impeller connected to the outer wall of the top end of the output shaft of the rotating motor by a coupling. The utility model can collect acid mist by using the negative pressure principle, prevent acid mist from corroding the device, improve practicality, and can replace the alkaline stuffing box without stopping the machine. At the same time, it can conveniently clean the neutralization cylinder, thereby improving work efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of acid mist collection, in particular to an acid mist negative pressure collection device. Background Art

[0002] When hot-dip galvanizing metal parts, the acidic substances on the surface of the metal parts after pickling will volatilize under high temperature conditions, thereby generating acid mist, so the acid mist needs to be collected.

[0003] After searching, a Chinese patent (application number is "202321655122.5") discloses "an acid mist collection device", which includes a collection box, a adding pipe is provided on the left side of the collection box, an air outlet is provided on the right side of the collection box, a collection device is provided inside the collection box, and the collection device includes a bearing, the bearing is fixedly mounted on the inner wall of the collection box, a hollow shaft is rotatably connected inside the bearing, the upper end of the hollow shaft passes through the collection box, both sides of the upper end of the hollow shaft are fixedly mounted with induced draft boxes, the inner wall of the induced draft box is fixedly mounted with an induced draft fan, and air guide ports are provided at the contact between the induced draft box and the hollow shaft; a stirring plate, the stirring plate is fixedly mounted on both sides of the hollow shaft, and an air outlet is provided on the surface of the stirring plate; a motor, the motor is fixedly mounted on the upper end of the collection box, a driving wheel is fixedly mounted on the upper end of the motor, and a driven wheel is fixedly mounted on the surface of the hollow shaft. However, the above device has the following problems during use:

[0004] 1. When two sets of induced draft fans are used to transport the acid mist in the outside air, the induced draft fans are easily corroded by the acid mist, causing damage to the induced draft fans and low practicality;

[0005] 2. When acid mist is treated, the acid mist reacts with alkali solution to easily produce precipitates, which easily clog the drain pipe, requiring shutdown maintenance, and low work efficiency. Utility Model Content

[0006] The utility model provides an acid mist negative pressure collection device, which solves the problems that the induced draft fan of the reference document is easily corroded by the acid mist, causing damage to the induced draft fan, low practicality, sediment easily blocks the drain pipe, requires shutdown maintenance, and has low work efficiency.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A negative pressure acid mist collection device comprises a base plate, a negative pressure cylinder and a cylinder cover, wherein a vacuum pump is connected to the outer wall of one end of the top of the base plate by bolts, a rotating mechanism is arranged in the negative pressure cylinder, the rotating mechanism comprises a rotating motor connected to the outer wall of the bottom of the negative pressure cylinder by bolts, a rotating shaft connected to the outer wall of the top end of the output shaft of the rotating motor by a coupling, and an impeller connected to the outer wall of the lower part of the rotating shaft by a bearing, four groups of acid mist neutralization mechanisms are arranged on the top of the cylinder cover, the acid mist neutralization mechanisms comprise a neutralization cylinder, a top cover screwed on the upper inner wall of the neutralization cylinder and an alkaline stuffing box slidably sleeved in the neutralization cylinder, an upper sealing plate of a "T"-shaped structure is arranged on the top of the rotating shaft, and a lower sealing plate is arranged in the negative pressure cylinder.

[0009] Preferably, the negative pressure cylinder is connected to the top outer wall of the base plate by bolts, and the cylinder cover is connected to the top outer wall of the negative pressure cylinder by bolts.

[0010] Preferably, an exhaust pipe is fixedly provided on the inner wall in the middle portion of one side of the negative pressure cylinder, an air supply pipe is fixedly provided on the air inlet end of the vacuum pump, and one end of the air supply pipe is fixedly provided on the outer wall of the exhaust pipe.

[0011] Preferably, the middle portion of the rotating shaft passes through and is fixedly mounted on the top outer wall of the cylinder cover, and a limiting ring is fixedly mounted on the lower outer wall of the rotating shaft, and the impeller abuts against the top outer wall of the limiting ring.

[0012] Through the above scheme, the air in the negative pressure cylinder is extracted by a vacuum pump, so that the pressure in the negative pressure cylinder is lower than the pressure of the outside air. When the air in the negative pressure cylinder circulates, it drives the impeller to rotate, and the impeller further transports the air in the negative pressure cylinder, so that the acid mist is transported into the neutralization cylinder under the action of the pressure difference.

[0013] Preferably, a fixing ring is fixedly provided on the lower outer wall of the neutralization cylinder, and the fixing ring is connected to the top outer wall of the cylinder cover by bolts, a connecting pipe is fixedly provided on the bottom inner wall of the neutralization cylinder, and the connecting pipe passes through and is inserted into the bottom outer wall of the cylinder cover, a plurality of connecting rods are fixedly provided on the bottom inner wall of the alkaline filler box, and the plurality of connecting rods are respectively fixedly provided on the top inner wall of the top cover.

[0014] Preferably, the upper sealing plate is fixed on the outer wall of the top end of the rotating shaft, and the bottom of the upper sealing plate abuts against the outer walls of the tops of three top covers respectively; the lower sealing plate is fixed on the inner wall of the middle part of the rotating shaft, and the top of the lower sealing plate abuts against the outer walls of the bottoms of three connecting tubes.

[0015] Through the above scheme, the rotating shaft, the lower sealing plate and the upper sealing plate are driven to rotate by the output shaft of the rotating motor, so that the upper sealing plate and the lower sealing plate seal three of the negative pressure cylinders. When the concentration of external acid mist is large, the rotating motor drives the upper sealing plate and the lower sealing plate to separate from the seal of the neutralization cylinder, so that the acid mist enters the four neutralization cylinders and contacts and neutralizes the alkaline filler in the alkaline filler box. When the alkaline filler box needs to be replaced, the rotating shaft is rotated to separate the upper sealing plate and the lower sealing plate from the seal of the neutralization cylinder, and then the alkaline filler box that needs to be replaced is removed.

[0016] The beneficial effects of the utility model are:

[0017] 1. A vacuum pump and a rotating mechanism are provided. The vacuum pump draws out the air in the negative pressure cylinder, so that the pressure in the negative pressure cylinder is lower than the pressure of the outside air. When the air in the negative pressure cylinder circulates, the impeller is driven to rotate. The impeller further transports the air in the negative pressure cylinder, so that the acid mist is transported into the neutralization cylinder under the action of the pressure difference. The acid mist can be collected by using the negative pressure principle to prevent the acid mist from corroding the device, thereby improving the practicality.

[0018] 2. An acid mist neutralization mechanism, an upper sealing plate and a lower sealing plate are provided. The output shaft of the rotating motor drives the rotating shaft, the lower sealing plate and the upper sealing plate to rotate, so that the upper sealing plate and the lower sealing plate seal three of the negative pressure cylinders. When the external acid mist concentration is relatively large, the rotating motor drives the upper sealing plate and the lower sealing plate to separate from the seal on the neutralization cylinder, so that the acid mist enters the four neutralization cylinders and contacts and neutralizes with the alkaline filler in the alkaline filler box. When the alkaline filler box needs to be replaced, the rotating shaft is rotated to separate the upper sealing plate and the lower sealing plate from the seal on the neutralization cylinder, and then the alkaline filler box that needs to be replaced is removed. The alkaline filler box can be replaced without stopping the machine, and the neutralization cylinder can be cleaned conveniently, thereby improving work efficiency.

[0019] In summary, the utility model can collect acid mist by using the negative pressure principle, prevent the acid mist from corroding the device, improve practicality, can replace the alkaline filler box without stopping the machine, and can conveniently clean the neutralization cylinder, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main three-dimensional structure of an acid mist negative pressure collection device proposed by the utility model.

[0021] Figure 2 The utility model is a partial cross-sectional structural schematic diagram of an acid mist negative pressure collection device.

[0022] Figure 3 The utility model provides a schematic diagram of the rotating mechanism structure of an acid mist negative pressure collection device.

[0023] Figure 4 The utility model provides a schematic cross-sectional structure diagram of an acid mist neutralization mechanism of an acid mist negative pressure collection device.

[0024] Figure 5 The utility model provides a schematic structural diagram of an upper sealing plate and a lower sealing plate of an acid mist negative pressure collection device.

[0025] In the figure: 1, bottom plate; 2, negative pressure cylinder; 3, cylinder cover; 4, vacuum pump; 5, gas pipe; 6, rotating mechanism; 601, rotating motor; 602, rotating shaft; 603, impeller; 7, acid mist neutralization mechanism; 701, neutralization cylinder; 702, fixing ring; 703, connecting pipe; 704, top cover; 705, alkaline stuffing box; 706, connecting rod; 8, upper sealing plate; 9, lower sealing plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Example 1, reference Figure 1-3 A negative pressure acid mist collecting device comprises a bottom plate 1, a negative pressure cylinder 2 connected to the outer wall of the top of the bottom plate 1 by bolts, and a cylinder cover 3 connected to the outer wall of the top of the negative pressure cylinder 2 by bolts. A vacuum pump 4 is connected to the outer wall of the top end of the bottom plate 1 by bolts. An exhaust pipe is fixed on the inner wall of the middle part of one side of the negative pressure cylinder 2. An air supply pipe 5 is fixed on the air inlet end of the vacuum pump 4. One end of the air supply pipe 5 is fixed on the outer wall of the exhaust pipe. A gas sensor is arranged in the negative pressure cylinder 2 for detecting the concentration of the acid mist gas in the negative pressure cylinder 2. A rotating mechanism 6 is provided in the negative pressure cylinder 2, and the rotating mechanism 6 includes a rotating motor 601 connected to the outer wall of the bottom of the negative pressure cylinder 2 by bolts, a rotating shaft 602 connected to the outer wall of the top end of the output shaft of the rotating motor 601 by a coupling, and an impeller 603 connected to the outer wall of the lower part of the rotating shaft 602 by a bearing. The middle part of the rotating shaft 602 passes through and is fixed on the outer wall of the top of the cylinder cover 3. A limiting ring is fixed on the outer wall of the lower part of the rotating shaft 602, and the impeller 603 abuts against the outer wall of the top of the limiting ring.

[0028] Example 2, reference Figure 1 and Figure 4-5, an acid mist negative pressure collection device, further comprising four groups of acid mist neutralization mechanisms 7, the acid mist neutralization mechanism 7 comprising a neutralization cylinder 701, a top cover 704 screwed on the upper inner wall of the neutralization cylinder 701 and an alkaline stuffing box 705 slidably sleeved in the neutralization cylinder 701, a fixing ring 702 is fixedly arranged on the lower outer wall of the neutralization cylinder 701, the fixing ring 702 is connected to the top outer wall of the cylinder cover 3 by bolts, a connecting pipe 703 is fixedly arranged on the bottom inner wall of the neutralization cylinder 701, the connecting pipe 703 penetrates and is plugged into the bottom outer wall of the cylinder cover 3, the alkaline stuffing box 705 There are air holes on the bottom outer wall, and a number of connecting rods 706 are fixedly arranged on the bottom inner wall of the alkaline filler box 705. The several connecting rods 706 are respectively fixedly arranged on the top inner wall of the top cover 704. A "T"-shaped upper sealing plate 8 is fixedly arranged on the top of the rotating shaft 602. The bottom of the upper sealing plate 602 is respectively abutted against the top outer walls of three of the top covers 704. A lower sealing plate 9 is fixedly arranged in the negative pressure cylinder 2. The top of the lower sealing plate 9 is abutted against the bottom outer walls of three of the connecting pipes 703. Sealing gaskets are fixedly arranged on the opposite sides of the upper sealing plate 8 and the lower sealing plate 9.

[0029] Working principle: The vacuum pump 4 extracts the air in the negative pressure cylinder 2, so that the pressure in the negative pressure cylinder 2 is lower than the pressure of the outside air. When the air in the negative pressure cylinder 2 circulates, it drives the impeller 603 to rotate. The impeller 603 further transports the air in the negative pressure cylinder 2, so that the acid mist is transported into the neutralization cylinder 701 under the action of the pressure difference. The output shaft of the rotating motor 601 drives the rotating shaft 602, the lower sealing plate 9 and the upper sealing plate 8 to rotate, so that the upper sealing plate 8 and the lower sealing plate 9 are in contact with each other. The three negative pressure cylinders 2 are sealed. When the external acid mist concentration is relatively high, the rotating motor 601 drives the upper sealing plate 8 and the lower sealing plate 9 to separate from the seal of the neutralization cylinder 701, so that the acid mist enters the four neutralization cylinders 701 and contacts and neutralizes the alkaline filler in the alkaline filler box 705. When the alkaline filler box 705 needs to be replaced, the rotating shaft 602 is rotated to separate the upper sealing plate 8 and the lower sealing plate 9 from the seal of the neutralization cylinder 701, and then the alkaline filler box 705 that needs to be replaced is removed.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An acid mist negative pressure collection device, comprising a base plate (1), a negative pressure cylinder (2) and a cylinder cover (3), characterized in that: A vacuum pump (4) is connected to the outer wall of one end of the top of the bottom plate (1) by bolts, and a rotating mechanism (6) is provided inside the negative pressure cylinder (2), wherein the rotating mechanism (6) comprises a rotating motor (601) connected to the outer wall of the bottom of the negative pressure cylinder (2) by bolts, a rotating shaft (602) connected to the outer wall of the top end of the output shaft of the rotating motor (601) by a coupling, and an impeller (603) connected to the outer wall of the lower part of the rotating shaft (602) by a bearing; The top of the cylinder cover (3) is provided with four groups of acid mist neutralization mechanisms (7), and the acid mist neutralization mechanisms (7) include a neutralization cylinder (701), a top cover (704) screwed onto the upper inner wall of the neutralization cylinder (701), and an alkaline filler box (705) slidably sleeved in the neutralization cylinder (701); An upper sealing plate (8) with a "T"-shaped structure is provided at the top end of the rotating shaft (602), and a lower sealing plate (9) is provided inside the negative pressure cylinder (2).

2. The acid mist negative pressure collection device according to claim 1, characterized in that: The negative pressure cylinder (2) is connected to the top outer wall of the bottom plate (1) by means of bolts, and the cylinder cover (3) is connected to the top outer wall of the negative pressure cylinder (2) by means of bolts.

3. The acid mist negative pressure collection device according to claim 1, characterized in that: An exhaust pipe is fixedly arranged on the inner wall of the middle part of one side of the negative pressure cylinder (2), an air supply pipe (5) is fixedly arranged on the air inlet end of the vacuum pump (4), and one end of the air supply pipe (5) is fixedly arranged on the outer wall of the exhaust pipe.

4. The acid mist negative pressure collection device according to claim 1, characterized in that: The middle part of the rotating shaft (602) passes through and is fixedly arranged on the top outer wall of the cylinder cover (3), and a limiting ring is fixedly arranged on the lower outer wall of the rotating shaft (602), and the impeller (603) abuts against the top outer wall of the limiting ring.

5. The acid mist negative pressure collection device according to claim 1, characterized in that: A fixing ring (702) is fixedly provided on the lower outer wall of the neutralization cylinder (701), and the fixing ring (702) is connected to the top outer wall of the cylinder cover (3) by bolts. A connecting pipe (703) is fixedly provided on the bottom inner wall of the neutralization cylinder (701), and the connecting pipe (703) penetrates and is plugged into the bottom outer wall of the cylinder cover (3). A plurality of connecting rods (706) are fixedly provided on the bottom inner wall of the alkaline filler box (705), and the plurality of connecting rods (706) are respectively fixedly provided on the top inner wall of the top cover (704).

6. The acid mist negative pressure collection device according to claim 1, characterized in that: The upper sealing plate (8) is fixedly arranged on the outer wall of the top end of the rotating shaft (602), and the bottom of the upper sealing plate (8) is respectively abutted against the outer walls of the tops of three top covers (704); the lower sealing plate (9) is fixedly arranged on the inner wall of the middle part of the rotating shaft (602), and the top of the lower sealing plate (9) is respectively abutted against the outer walls of the bottoms of three connecting tubes (703).

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