Flue gas purification and dust collection system for fuming furnace

Abstract

The utility model discloses a fuming furnace flue gas purification dust collection system which comprises a bag-type dust collector, the bag-type dust collector comprises a shell and a plurality of cloth bags, the two ends of each cloth bag are fixedly sleeved with limiting plates, the limiting plate at the top end is fixedly connected with a partition plate in the shell through bolts, a dust collection assembly is arranged in each cloth bag, and the dust collection assemblies are fixedly connected with the cloth bags through bolts. The device comprises an exhaust groove, the exhaust groove is formed in a corresponding cloth bag, and an air injection mechanism is arranged at the axis position in the cloth bag and used for injecting air into the exhaust groove. In the using process of the improved smoke purification and dust collection system for the fuming furnace, powder particles attached to the outer wall of the cloth bag can be synchronously cleaned in real time, so that the filtering performance of the cloth bag is hardly reduced in the using process of the device, the dust collection efficiency of a bag-type dust collector is improved, and the service life of the device is prolonged. And the use mode of the original smoke purification and dust collection system of the fuming furnace is hardly changed, so that the device is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flue gas purification and dust collection device, especially to a kind of flue gas purification and dust collection system of smoke furnace. BACKGROUND

[0002] The principle of flue gas purification and dust collection of smoke furnace is mainly by blowing the mixture of pulverized coal and air or natural gas into molten slag, reducing the metal compounds in the slag to metal and volatilizing into gas phase, and then being oxidized in the upper space of smoke furnace or flue system, and finally being captured in the dust collection equipment. The dust particles in the flue gas are generally captured and collected by a bag filter.

[0003] The existing bag filter generally filters flue gas by a bag, so as to filter out the dust particles in the flue gas. During the use of the device, compressed air is generally injected into the bag at regular intervals to remove the dust particles attached to the surface of the bag, so that the bag filter can be used normally. The intermittent bag dust removal treatment causes the filtration performance to decrease during the process of powder particles adhering to the outer wall of the bag, thereby reducing the dust removal efficiency of the bag filter. SUMMARY

[0004] The utility model aims at providing a kind of flue gas purification and dust collection system of smoke furnace, to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of flue gas purification and dust collection system of smoke furnace, including bag filter, the bag filter includes shell and several bags, both ends of the bag are fixedly sleeved with limit plate, the limit plate at top end is fixedly connected with the partition in the shell interior by bolt, dust removal assembly is arranged in the bag, which includes exhaust groove, and exhaust groove is arranged in corresponding bag, injection mechanism is arranged at the axial position in the bag, for injecting gas into exhaust groove, driving mechanism is arranged at the top end of the bag, for driving exhaust groove to rotate.

[0006] Preferably, several limit plates at the bottom side are equidistantly provided with several support plates, and both ends of each support plate are fixedly connected with the inner wall of the shell, and the top side of the support plate is fixedly connected with the corresponding limit plate by bolt.

[0007] Preferably, the exhaust port of the exhaust groove is in the shape of an expanding mouth, and both side walls of the exhaust end of the exhaust groove are in the shape of an arc surface and in contact with the inner wall of the corresponding bag.

[0008] Preferably, the gas injection mechanism comprises a circular tube vertically arranged at the center of the corresponding bag, the bottom end of the circular tube is rotatably arranged in the corresponding limiting plate through a bearing, and the top of the circular tube is rotatably penetrated through the corresponding limiting plate through a bearing, a plurality of connecting pipes are arranged between the circular tube and the exhaust groove, and the two ends of each connecting pipe are fixedly penetrated through the groove wall of the exhaust groove and the pipe wall of the circular tube.

[0009] Preferably, the driving mechanism comprises a first impeller arranged above the corresponding circular tube, and the first impeller is fixedly connected with the top end of the corresponding circular tube through a plurality of connecting rods, a plurality of exhaust holes are arranged on the limiting plate at the top end in a circumferential array on the outer periphery of the corresponding circular tube.

[0010] Preferably, the top side of the first impeller is provided with a gear transmission, the shell of the gear transmission is fixedly connected with the inner wall of the shell through a support, a transmission shaft is rotatably penetrated and arranged at the center position of the first impeller through a bearing, the top of the circular tube is in the shape of an expanded pipe, a second impeller is arranged inside the top of the circular tube, and the two ends of the transmission shaft are fixedly connected with the top end of the second impeller and the input end of the gear transmission.

[0011] The utility model has the following beneficial effects:

[0012] In the use process of the improved smoke furnace flue gas purification and dust collection system, the real-time cleaning of the powder particles attached to the outer wall of the bag can be completed synchronously, so that the filtering performance of the bag is hardly reduced during use, the dust removal efficiency of the bag dust collector is improved, and the original smoke furnace flue gas purification and dust collection system usage mode is hardly changed, and the use of the device is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0014] Figure 1 It is the perspective view of the overall structure of the bag dust collector of the utility model;

[0015] Figure 2 It is the perspective view of the internal structure of the shell of the utility model;

[0016] Figure 3 It is the perspective view of the internal structure of the bag of the utility model;

[0017] Figure 4 It is the top view of the internal overall structure of the bag and the exhaust groove of the utility model;

[0018] Figure 5 It is the front view of the whole structure inside the circular pipe and the exhaust groove of the utility model;

[0019] Figure 6 It is the front view of the whole structure inside the circular pipe and the exhaust groove of the utility model; Figure 5 It is the enlarged view of the structure at A in the middle.

[0020] In the figure: 1, cloth bag dust collector; 11, shell; 12, cloth bag; 2, limiting plate; 3, dust removal assembly; 31, exhaust groove; 32, supporting plate; 4, gas injection mechanism; 41, circular pipe; 42, connecting pipe; 43, second impeller; 44, transmission shaft; 45, gear transmission; 5, driving mechanism; 51, first impeller; 52, connecting rod; 53, exhaust hole. DETAILED DESCRIPTION

[0021] In order to make the technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0022] The utility model provides a kind of technical scheme: refer to Figure 1 Figure 4 The utility model discloses a kind of flue gas purification and dust collection systems of fuming furnace, including cloth bag dust collector 1, cloth bag dust collector 1 includes shell 11 and several cloth bags 12, both ends of cloth bag 12 are fixedly sleeved with limiting plate 2, limiting plate 2 at top is fixedly connected with the partition inside shell 11 by bolt, dust removal assembly 3 is equipped in cloth bag 12, it includes exhaust groove 31, and exhaust groove 31 is located in corresponding cloth bag 12, gas injection mechanism 4 is equipped at the axial position of cloth bag 12, for injecting gas into exhaust groove 31, the top of cloth bag 12 is equipped with driving mechanism 5, for driving exhaust groove 31 rotation.

[0023] In the embodiment, according to the use mode of the prior flue gas purification and dust collection system of fuming furnace, the use of the flue gas purification and dust collection system of fuming furnace of the present application, please refer to Figure 2 As shown in the figure, with the injection of flue gas into shell 11, cloth bag 12 completes the filtration of dust particles in flue gas, clean air after filtration is located in cloth bag 12 and flows upwards along the inside of cloth bag 12, finally passes through the top space of shell 11 and is discharged from shell 11 by exhaust end of shell 11, please refer to Figure 2 And Figure 3 As shown in the figure, after clean air is discharged from the top opening of cloth bag 12, it blows on driving mechanism 5, driving mechanism 5 is started, drives exhaust groove 31 to rotate in cloth bag 12, driving mechanism 5 is started simultaneously and synchronously drives gas injection mechanism 4 to start, and part of clean air is sucked into exhaust groove 31, please refer to Figure 4 ​As shown, with the clean gas flowing into the exhaust groove 31, a high pressure cavity is formed in the exhaust groove 31, at this time, a pressure difference is formed at the corresponding positions inside and outside the cloth bag 12, the gas in the cloth bag 12 flows out through the holes of the cloth bag 12, thereby blowing off the powder particles attached to the outer wall of the cloth bag 12, in cooperation with the rotation of the exhaust groove 31 in the cloth bag 12, the cleaning of the powder particles attached to the outer wall of the cloth bag 12 can be completed synchronously in the process of filtering the dust particles in the flue gas of the cloth bag 12, which will not reduce the filtering performance of the cloth bag 12, improve the dust removal efficiency of the cloth bag 12 dust collector 1, and almost will not change the original flue gas purification and dust collection system usage mode, which is convenient for the use of the device.

[0024] In further preferable embodiments of the present application, as shown in Figure 2 and Figure 3 , the bottom side of the plurality of bottom end limiting plates 2 is equidistantly provided with a plurality of supporting plates 32, and the two ends of each supporting plate 32 are fixedly connected with the inner wall of the shell 11, and the top side of the supporting plate 32 is fixedly connected with the corresponding limiting plate 2 through bolts;

[0025] In this embodiment, please refer to Figure 2 , during use of the device, the bottom end limiting plate 2 cooperates with the supporting plate 32 to constrain the position of the bottom end of the cloth bag 12 in the shell 11, and the top end limiting plate 2 constrains the position of the top end of the cloth bag 12 in the shell 11, so that the cloth bag 12 always maintains a vertical state in the shell 11 during use of the device, and the bag wall of the cloth bag 12 will not deform inwardly.

[0026] In further preferable embodiments of the present application, as shown in Figure 3 and Figure 4 , the exhaust port of the exhaust groove 31 is provided in an expanded shape, and the two side walls of the exhaust end of the exhaust groove 31 are provided in an arc shape and in contact with the inner wall of the corresponding cloth bag 12;

[0027] In this embodiment, please refer to Figure 4 , after the gas flows into the exhaust groove 31, due to the gradual reduction of the internal space of the exhaust groove 31, the air injected into the exhaust groove 31 first diffuses in the exhaust groove 31, and then the exhaust end of the exhaust groove 31 is discharged, so that almost all the gas in the exhaust port of the exhaust groove 31 is discharged, ensuring the blowing area of the gas flow on the inner wall of the cloth bag 12, and the contact between the exhaust end of the exhaust groove 31 and the inner wall of the cloth bag 12 can make most of the gas in the exhaust groove 31 flow out of the cloth bag 12 through the holes of the cloth bag 12.

[0028] In further preferable embodiments of the present application, as shown in Figure 3 - Figure 5As shown in the drawings, the air injection mechanism 4 comprises a circular tube 41 vertically arranged at the axial position in the corresponding cloth bag 12, the bottom end of the circular tube 41 is rotatably arranged in the corresponding limiting plate 2 through a bearing, and the top of the circular tube 41 is rotatably penetrated through the corresponding limiting plate 2 through a bearing, a plurality of connecting pipes 42 are arranged between the circular tube 41 and the exhaust groove 31, and the two ends of each connecting pipe 42 are respectively fixedly penetrated through the groove wall of the exhaust groove 31 and the pipe wall of the circular tube 41;

[0029] In the embodiment, as shown in Figure 3 and Figure 5 , the gas outside the circular tube 41 flows into the circular tube 41 from the opening at the top end of the circular tube 41, and then is divided into a plurality of groups to flow into the exhaust groove 31 through the connecting pipes 42, the gas is injected into the exhaust groove 31 from a plurality of positions in the exhaust groove 31, which facilitates the diffusion of the gas in the exhaust groove 31.

[0030] In further preferable embodiments of the utility model, as shown in Figure 3 , Figure 4 and Figure 6 , the driving mechanism 5 comprises a first impeller 51 arranged above the corresponding circular tube 41, and the first impeller 51 is fixedly connected to the top end of the corresponding circular tube 41 through a plurality of connecting rods 52, a plurality of exhaust holes 53 are arranged on the limiting plate 2 at the top end, and the plurality of exhaust holes 53 in each group are arranged in a circumferential array on the outer circumferential side of the corresponding circular tube 41.

[0031] In the embodiment, as shown in Figure 3 , Figure 4 and Figure 6 , the clean air flowing upwards in the cloth bag 12 flows out of the cloth bag 12 through the exhaust holes 53, and then the airflow directly blows on the first impeller 51 to drive the first impeller 51 to rotate, and the first impeller 51 synchronously drives the circular tube 41 to continuously rotate in the cloth bag 12 through the connecting rods 52 in the rotating process, and drives the exhaust groove 31 to make a circumferential motion around the circular tube 41 in the cloth bag 12 through the connecting pipes 42, so as to automatically adjust the position of the exhaust groove 31 in the cloth bag 12, without setting an additional driving structure, thereby reducing the production cost of the device.

[0032] In further preferable embodiments of the utility model, as shown in Figure 3 , Figure 5 and Figure 6 , the top side of the first impeller 51 is provided with a gear transmission 45, the shell 11 is fixedly connected to the inner wall of the shell 11 through a support, a transmission shaft 44 is rotatably penetrated and arranged at the central position of the first impeller 51 through a bearing, the top of the circular tube 41 is provided in an expanded pipe shape, a second impeller 43 is arranged inside the top of the circular tube 41, and the two ends of the transmission shaft 44 are fixedly connected to the top end of the second impeller 43 and the input end of the gear transmission 45, respectively.

[0033] In this embodiment, please refer to Figure 5 and Figure 6 As shown, in the process of rotating the first impeller 51, the gear drive 45 is driven to operate, (the gear drive 45 is mainly composed of the shell 11 and a plurality of transmission gears, so that the first impeller 51 can drive the transmission shaft 44 to rotate more quickly during rotation), the activated gear drive 45 drives the second impeller 43 to rotate more quickly through the transmission shaft 44, the rotating second impeller 43 pushes the gas in the top opening of the circular pipe 41 downward, so that part of the gas in the circular pipe 41 flows into the exhaust groove 31 through the connecting pipe 42, and a negative pressure cavity is formed in the top opening of the circular pipe 41, part of the clean gas discharged from the bag 12 is sucked into the cavity to supplement the part of the gas lost in the top opening of the circular pipe 41, without setting an additional driving structure, the use cost of the device is reduced.

[0034] Working principle: according to the use mode of the existing smoke furnace flue gas purification and dust collection system, the flue gas is injected into the shell 11, the bag 12 filters the dust particles in the flue gas, and the filtered clean air flows upward along the inside of the bag 12, and finally passes through the exhaust hole 53 and the top space of the shell 11 and is discharged from the exhaust end of the shell 11. In the process of discharging clean air from the exhaust hole 53, it directly blows on the first impeller 51 to drive the first impeller 51 to rotate, and the first impeller 51 drives the circular pipe 41 in the bag 12 to rotate continuously through the connecting rod 52 during rotation, and drives the exhaust end of the exhaust groove 31 to slide along the inner wall of the bag 12 through the connecting pipe 42, that is, the exhaust groove 31 makes a circular motion around the circular pipe 41, and the first impeller 51 drives the gear drive 45 to operate while rotating, and then drives the second impeller 43 to rotate more quickly through the transmission shaft 44, the rotating second impeller 43 pushes the gas in the top opening of the circular pipe 41 downward, so that part of the gas in the circular pipe 41 flows into the exhaust groove 31 through the connecting pipe 42, and a negative pressure cavity is formed in the top opening of the circular pipe 41, part of the clean gas discharged from the bag 12 is sucked into the cavity to supplement the part of the gas lost in the top opening of the circular pipe 41, the gas flowing into the connecting pipe 42 is introduced into the exhaust groove 31 through the connecting pipe 42, due to the gradual reduction of the internal space of the exhaust groove 31 and the blocking of the exhaust end of the exhaust groove 31 by the bag 12, the air injected into the exhaust groove 31 first diffuses in the exhaust groove 31, then a high pressure cavity is formed in the exhaust groove 31, at this time a pressure difference is formed between the corresponding positions inside and outside the bag 12, the gas in the bag 12 flows out from the bag 12 through the holes of the bag 12, thereby blowing off the powder particles attached to the outer wall of the bag 12, and cooperating with the rotation of the exhaust groove 31 in the bag 12, the cleaning of the powder particles attached to the outer wall of the bag 12 can be completed synchronously and sequentially during the process of filtering the dust particles in the flue gas by the bag 12.

[0035] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A flue gas purification and dust collection system of a fuming furnace, comprising a bag filter (1), the bag filter (1) comprising a housing (11) and a plurality of bags (12), characterized in that: Both ends of the cloth bag (12) are fixedly sleeved with limit plates (2), the limit plate (2) at the top end is fixedly connected with the partition plate inside the shell (11) through bolts, a dust removal assembly (3) is arranged in the cloth bag (12), which comprises an exhaust groove (31), and the exhaust groove (31) is arranged in the corresponding cloth bag (12), a gas injection mechanism (4) is arranged at the axial position in the cloth bag (12) and used for injecting gas into the exhaust groove (31), and the top end of the cloth bag (12) is provided with a driving mechanism (5) for driving the exhaust groove (31) to rotate.

2. A flue gas cleaning and dust collecting system for a smelting furnace according to claim 1, characterized in that A plurality of support plates (32) are equidistantly arranged on the bottom side of the limit plate (2) at the bottom end, and both ends of each support plate (32) are fixedly connected with the inner wall of the shell (11), and the top side of the support plate (32) is fixedly connected with the corresponding limit plate (2) through bolts.

3. A flue gas cleaning and dust collecting system of a smoke oven according to claim 2, characterized in that: The exhaust port of the exhaust groove (31) is in an expanded shape, and the two side walls of the exhaust end of the exhaust groove (31) are in an arc shape and are in contact with the inner wall of the corresponding cloth bag (12).

4. A flue gas cleaning and dust collecting system of a smoke oven according to claim 3, characterized in that: The gas injection mechanism (4) comprises a circular pipe (41) vertically arranged at the axial position in the corresponding cloth bag (12), the bottom end of the circular pipe (41) is rotatably arranged in the corresponding limit plate (2) through a bearing, and the top of the circular pipe (41) penetrates the corresponding limit plate (2) through a bearing, a plurality of connecting pipes (42) are arranged between the circular pipe (41) and the exhaust groove (31), and both ends of each connecting pipe (42) are fixedly penetrated into the groove wall of the exhaust groove (31) and the pipe wall of the circular pipe (41) respectively.

5. A flue gas cleaning and dust collecting system of a smoke oven according to claim 4, characterized in that: The driving mechanism (5) comprises a first impeller (51) arranged above the corresponding circular pipe (41), and the first impeller (51) is fixedly connected with the top end of the corresponding circular pipe (41) through a plurality of connecting rods (52), a group of exhaust holes (53) are arranged on the limit plate (2) at the top end, and a plurality of exhaust holes (53) in each group are arranged in a circumferential array on the outer circumferential side of the corresponding circular pipe (41).

6. A flue gas cleaning and dust collecting system of a smoke oven according to claim 5, characterized in that: The top side of the first impeller (51) is provided with a gear transmission (45), and the shell (11) of the gear transmission (45) is fixedly connected with the inner wall of the shell (11) through a support, a transmission shaft (44) is rotatably penetrated and arranged at the central position of the first impeller (51) through a bearing, the top of the circular pipe (41) is in an expanded shape, a second impeller (43) is arranged inside the circular pipe (41), and both ends of the transmission shaft (44) are fixedly connected with the top end of the second impeller (43) and the input end of the gear transmission (45) respectively.

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