Bag-type dust collector

Abstract

The utility model provides a bag-type dust remover, which belongs to the technical field of dust removal in cellulose ether production and comprises a dust removal box body and a fixing plate arranged at the upper end of an inner cavity of the dust removal box body, dust removal filter bags are arranged in mounting ports distributed in an array on the fixing plate, and a shaking mechanism for driving the dust removal filter bags to shake is further arranged on the dust removal box body. The shaking mechanism comprises sliding holes which are longitudinally and symmetrically formed in the left end and the right end of the upper surface of the dust removal box body respectively, sliding rods are slidably connected into the sliding holes, a bottom supporting frame is arranged among the bottom ends of the four sliding rods, and the lower ends of the dust removal filter bags are fixedly connected with the upper surface of the bottom supporting frame. According to the dust removal device, the shaking mechanism is matched with the pulse dust removal assembly, so that the dust removal effect on the dust removal filter bag is further improved, the dust removal filter bag is always kept in an efficient filtering state, dust-containing gas generated in the cellulose ether production process can be efficiently filtered, and the problem that the dust removal effect at the bottom of the dust removal filter bag is poor is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal in cellulose ether production, and in particular relates to a bag dust collector. Background Art

[0002] Cellulose ether is a polymer material derived from natural cellulose. It is a series of derivatives obtained by chemical modification, that is, using an etherifying agent to replace some or all of the hydroxyl hydrogen atoms on the cellulose molecular chain with ether groups. At present, in the production process of cellulose ether, waste gas containing a large amount of dust is generated, and this dust is usually cleaned with a special bag dust collector;

[0003] The existing bag dust collector, when removing dust from the dust-containing gas generated during the production of cellulose ether, usually uses the dust filter bag and the matching pulse cleaning system to perform the cleaning operation. Although it can effectively remove the dust accumulated on the surface of the filter bag under normal circumstances, some problems are still exposed during long-term operation. The energy of the gas blown by the pulse cleaning structure shows a decreasing trend with the length of the filter bag. This phenomenon not only weakens the cleaning efficiency of the dust particles at the bottom of the dust filter bag, but also inevitably leads to a decline in the overall filtering performance of the filter bag, and also makes the dust filter bag unable to stably maintain a high-efficiency filtering state. Utility Model Content

[0004] In view of this, the utility model provides a bag dust collector, which can further improve the cleaning effect of the dust filter bag through a shaking mechanism and cooperation with a pulse cleaning component, so that the dust filter bag always maintains an efficient filtering state, and can efficiently filter the dust-containing gas generated in the production process of cellulose ether, solving the problem of poor cleaning effect at the bottom of the dust filter bag.

[0005] In order to solve the above technical problems, the utility model provides a bag dust collector, including a dust collection box and a fixed plate arranged at the upper end of the inner cavity of the dust collection box, dust filter bags are arranged in the mounting openings distributed in an array on the fixed plate, and the dust collection box is also provided with a shaking mechanism for driving the dust filter bags to shake, and the shaking mechanism includes sliding holes respectively and symmetrically arranged at the left and right ends of the upper surface of the dust collection box, and sliding rods are slidably connected in the sliding holes, and a bottom support frame is arranged between the bottom ends of the four sliding rods, and the lower ends of the dust filter bags are fixedly connected to the upper surface of the bottom support frame, and the upper end of the dust collection box is also provided with a driving component for driving the sliding rod to move, and the dust collection box is also provided with a pulse cleaning component for cleaning the dust filter bags, and an ash discharge valve is provided at the ash discharge port at the lower end of the dust collection box, and the ash discharge valve is electrically connected to the external single-chip computer.

[0006] The shaking mechanism includes mounting rings respectively arranged on the upper ends of the outer arc surfaces of the sliding rods, springs are arranged between the upper end surfaces of the mounting rings and the top wall surface of the dust removal box body, and the springs are respectively movably sleeved on the outer sides of the vertically adjacent sliding rods.

[0007] The driving assembly includes fixed plates respectively arranged in the middle of the upper surface of the dust removal box body, a rotating rod is rotatably connected in a rotating hole arranged in the middle of the upper end of the fixed plate, cams are arranged at the left and right ends of the outer arc surface of the rotating rod, and connecting plates are arranged at the upper ends between two longitudinally adjacent sliding rods, and the cams are respectively cooperated with the connecting plates adjacent to the same side; the driving assembly also includes a motor arranged on the left side of the upper surface of the dust removal box body, the right end of the output shaft of the motor is fixedly connected to the left end of the rotating rod, and the motor is electrically connected to the external single-chip computer.

[0008] The pulse cleaning component includes an assembly port which is evenly arranged longitudinally at the upper end of the right surface of the dust removal box body. A blow pipe is provided in the assembly port. A venturi tube is provided in the air outlet arranged on the outer arc surface of the blow pipe. The lower ends of the venturi tubes are respectively located in the upper end openings of the vertically adjacent dust filter bags. An electromagnetic pulse valve is connected in series at the right end of the blow pipe, and the electromagnetic pulse valve is electrically connected to an external single-chip computer.

[0009] A baffle is provided at the lower left corner of the inner cavity of the dust removal box body near the dust inlet.

[0010] An observation window is arranged in an observation port arranged in the middle of the front surface of the dust removal box body.

[0011] The beneficial effects of the above technical solution of the utility model are as follows:

[0012] 1. The relevant staff controls the operation of the motor through an external single-chip computer, and at the same time controls the intermittent opening of the air electromagnetic pulse valve. When the electromagnetic pulse valve is opened, the high-pressure gas instantly enters the Venturi tube through the injection pipe. The Venturi tube uses the jet injection effect to quickly and concentratedly spray the gas into the dust filter bag, forming a strong reverse airflow. This airflow impacts the inner wall of the dust filter bag, instantly peeling off and blowing off the accumulated dust. The cleared dust falls to the bottom of the dust removal box under the action of gravity. At the same time, the rotation of the motor output shaft drives the rotating rod and the cams at both ends to rotate synchronously. When the cam is away from the center of the circle and contacts the connecting plate, the connecting plate, sliding rod, bottom support frame and mounting ring overcome the elasticity of the spring. The highest point of the upward force movement, when the cam is away from the center end and detached from the connecting plate, the connecting plate, sliding rod, bottom support frame and mounting ring are reset under the action of the spring rebound force, and this process is repeated continuously, so that the bottom support frame drives the dust filter bag to move up and down, thereby causing the dust filter bag to shake, which helps to loosen and fall off the dust particles attached to the surface of the dust filter bag, and cooperates with the pulse cleaning component to further improve the cleaning effect of the dust filter bag, so that the dust filter bag always maintains an efficient filtering state, and can efficiently filter the dust-containing gas generated in the production process of cellulose ether, solving the problem of poor cleaning effect at the bottom of the dust filter bag.

[0013] 2. The relevant staff connects the blowing pipe to the external high-pressure gas compressor, and then the dust-containing gas generated during the production of cellulose ether enters the dust removal box from the dust inlet at the lower left corner of the dust removal box, and is evenly dispersed under the guidance of the baffle. At the same time, the larger particles of dust in the dust-containing gas generated during the production of cellulose ether will be blocked by the baffle and fall to the bottom of the dust removal box. After that, the dust-containing gas generated during the production of cellulose ether will flow upward and pass through the dust filter bag, and the dust filter bag can effectively intercept and capture the dust particles in the dust-containing gas. The dust particles are retained on the filter surface of the dust filter bag, and the purified gas passes through the dust filter bag and is discharged through the exhaust port on the upper part of the dust removal box.

[0014] 3. The operator can monitor the dust accumulation in the dust removal box and the working status of the filter bag in real time through the observation window, and timely understand the operating status of the equipment for easy maintenance and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the bag dust collector of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the shaking mechanism of the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model;

[0018] Figure 4 It is a schematic diagram of the enlarged structure of point B of the utility model.

[0019] Explanation of the reference numerals: 100, dust removal box; 200, fixed plate; 300, dust filter bag; 400, sliding rod; 401, bottom support frame; 402, mounting ring; 403, spring; 500, fixed plate; 501, rotating rod; 502, cam; 503, connecting plate; 504, motor; 600, blowing pipe; 601, venturi; 602, electromagnetic pulse valve; 700, baffle; 800, observation window; 900, ash discharge valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-4 , the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0021] like Figure 1-4 As shown:

[0022] The present embodiment provides a bag dust collector, including a dust removal box 100 and a fixing plate 200 arranged at the upper end of the inner cavity of the dust removal box 100, dust filter bags 300 are arranged in the mounting openings distributed in an array on the fixing plate 200, and a shaking mechanism for driving the dust filter bags 300 to shake is also provided on the dust removal box 100, and the shaking mechanism includes sliding holes respectively and symmetrically arranged at the left and right ends of the upper surface of the dust removal box 100, and sliding rods 400 are slidably connected in the sliding holes, and a bottom support frame 401 is provided between the bottom ends of the four sliding rods 400, and the lower ends of the dust filter bags 300 are connected to the upper surface of the bottom support frame 401. The upper end of the dust removal box 100 is also provided with a driving component for driving the sliding rod 400 to move, and the dust removal box 100 is also provided with a pulse cleaning component for cleaning the dust filter bag 300. An ash discharge valve 900 is provided at the ash discharge port at the lower end of the dust removal box 100, and the ash discharge valve 900 is electrically connected to the external single-chip computer; the shaking mechanism includes mounting rings 402 respectively arranged on the upper ends of the outer arc surfaces of the sliding rods 400, and springs 403 are provided between the upper end surfaces of the mounting rings 402 and the top wall surface of the dust removal box 100, and the springs 403 are respectively movably sleeved on the outside of the vertically adjacent sliding rods 400.

[0023] like Figure 1-3 As shown, the driving assembly includes fixed plates 500 respectively arranged in the middle of the upper surface of the dust removal box 100, and a rotating rod 501 is rotatably connected in a rotating hole arranged in the middle of the upper end of the fixed plate 500, and cams 502 are provided at both ends of the left and right ends of the outer arc surface of the rotating rod 501, and connecting plates 503 are provided at the upper ends between two longitudinally adjacent sliding rods 400, and the cams 502 are respectively cooperated with the connecting plates 503 adjacent to the same side; the driving assembly also includes a motor 504 arranged on the left side of the upper surface of the dust removal box 100, and the right end of the output shaft of the motor 504 is fixedly connected to the left end of the rotating rod 501, and the motor 504 is electrically connected to the external single-chip computer.

[0024] like Figure 2-4 As shown, the pulse cleaning component includes an assembly port uniformly arranged longitudinally at the upper end of the right surface of the dust removal box 100, a blow pipe 600 is provided in the assembly port, a venturi 601 is provided in the air outlet arranged on the outer arc surface of the blow pipe 600, the lower ends of the venturi 601 are respectively located in the upper end openings of the vertically adjacent dust filter bags 300, the right end of the blow pipe 600 is connected in series with an electromagnetic pulse valve 602, and the electromagnetic pulse valve 602 is electrically connected to the external single-chip computer.

[0025] like Figure 1-4 As shown, a baffle 700 is provided at the lower left corner of the inner cavity of the dust removal box 100 near the dust inlet.

[0026] The working principle of the bag dust collector provided by the utility model is as follows: first, the relevant staff connects the blowing pipe 600 to the external high-pressure gas compressor, and then the dust-containing gas generated during the production of cellulose ether enters the dust removal box 100 from the dust inlet at the lower left corner of the dust removal box 100, and is evenly dispersed under the guidance of the baffle 700. At the same time, the larger particles of dust in the dust-containing gas generated during the production of cellulose ether will be blocked by the baffle 700 and fall to the bottom of the dust removal box 100. After that, the dust-containing gas generated during the production of cellulose ether will flow upward and pass through the dust removal filter bag 300, and the dust removal filter bag 300 can effectively intercept and capture the dust-containing gas The dust particles in the body are retained on the filter surface of the dust filter bag 300, and the purified gas passes through the dust filter bag 300 and is discharged through the exhaust port on the upper part of the dust removal box 100. In this process, the relevant staff adjusts the operation of the motor 504 through the external single-chip microcomputer, and at the same time adjusts the air electromagnetic pulse valve 602 to open intermittently. When the electromagnetic pulse valve 602 is opened, the high-pressure gas instantly passes through the injection pipe 600 and enters the venturi 601. The venturi 601 uses the jet injection effect to quickly and concentratedly spray the gas into the dust filter bag 300, forming a strong reverse airflow. This airflow impacts the inner wall of the dust filter bag 300, instantly peeling off and The accumulated dust is blown off, and the cleaned dust falls into the bottom of the dust removal box 100 under the action of gravity. At the same time, the output shaft of the motor 504 rotates to drive the rotating rod 501 and the cams 502 at both ends to rotate synchronously. When the cam 502 is away from the center end and contacts the connecting plate 503, the connecting plate 503, the sliding rod 400, the bottom support frame 401 and the mounting ring 402 overcome the elastic force of the spring 403 and move upward to the highest point. When the cam 502 is away from the center end and disengages from the connecting plate 503, the connecting plate 503, the sliding rod 400, the bottom support frame 401 and the mounting ring 402 are reset under the action of the rebound force of the spring 403. This process is repeated continuously, thereby The bottom support frame 401 drives the dust filter bag 300 to move up and down, so that the dust filter bag 300 is shaken, which helps to loosen and fall off the dust particles attached to the surface of the dust filter bag 300. At the same time, it cooperates with the pulse cleaning component to further improve the cleaning effect of the dust filter bag 300, so that the dust filter bag 300 always maintains an efficient filtering state, and can efficiently filter the dust-containing gas generated in the production process of cellulose ether. When the collected dust needs to be discharged, the external single-chip microcomputer controls the ash discharge valve 900 to open, and the ash discharge port at the lower end of the dust removal box 100 is opened, so that the accumulated dust can be discharged smoothly, completing the ash discharge process.

[0027] like Figure 1 As shown, an observation window 800 is provided in the observation port arranged in the middle of the front surface of the dust removal box 100. The operator can monitor the dust accumulation in the dust removal box and the working status of the filter bag in real time through the observation window 800, and timely understand the operating status of the equipment for easy maintenance and management.

[0028] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Bag dust collector, characterized by: The invention comprises a dust removal box (100) and a fixing plate (200) arranged at the upper end of the inner cavity of the dust removal box (100), dust filter bags (300) are arranged in the mounting openings arranged in an array on the fixing plate (200), and a shaking mechanism for driving the dust filter bags (300) to shake is also arranged on the dust removal box (100), and the shaking mechanism comprises sliding holes which are respectively and longitudinally symmetrically arranged at the left and right ends of the upper surface of the dust removal box (100), and sliding rods (400) are slidably connected in the sliding holes, and the four sliding rods (400) are connected to the inner surface of the dust removal box (100). A bottom support frame (401) is provided between the bottom ends of the dust filter bags (300) and the bottom ends of the dust filter bags (300), the lower ends of the dust filter bags (300) are fixedly connected to the upper surface of the bottom support frame (401), the upper end of the dust removal box (100) is also provided with a driving component for driving the sliding rod (400) to move, the dust removal box (100) is also provided with a pulse cleaning component for cleaning the dust filter bags (300), and an ash discharge valve (900) is provided at the ash discharge port at the lower end of the dust removal box (100), and the ash discharge valve (900) is electrically connected to an external single chip computer.

2. The bag dust collector according to claim 1, characterized in that: The shaking mechanism comprises mounting rings (402) respectively arranged on the upper ends of the outer arc surfaces of the sliding rods (400), springs (403) are arranged between the upper end surfaces of the mounting rings (402) and the top wall surface of the dust removal box (100), and the springs (403) are respectively movably sleeved on the outside of the vertically adjacent sliding rods (400).

3. The bag dust collector according to claim 1, characterized in that: The driving assembly comprises a fixed plate (500) respectively arranged at the middle part of the upper surface of the dust removal box (100); a rotating rod (501) is rotatably connected in a rotating hole arranged at the middle part of the upper end of the fixed plate (500); cams (502) are arranged at both left and right ends of the outer arc surface of the rotating rod (501); connecting plates (503) are arranged at the upper ends between two longitudinally adjacent sliding rods (400); and the cams (502) are respectively arranged in cooperation with the connecting plates (503) adjacent to the same side.

4. The bag dust collector according to claim 3, characterized in that: The driving assembly further comprises a motor (504) arranged on the left side of the upper surface of the dust removal box (100), the right end of the output shaft of the motor (504) being fixedly connected to the left end of the rotating rod (501), and the motor (504) being electrically connected to an external single chip computer.

5. The bag dust collector according to claim 1, characterized in that: The pulse cleaning component comprises an assembly port uniformly arranged longitudinally at the upper end of the right surface of the dust removal box (100), a blow pipe (600) is arranged in the assembly port, a venturi (601) is arranged in the air outlet arranged on the outer arc surface of the blow pipe (600), the lower end of the venturi (601) is respectively located in the upper end opening of the vertically adjacent dust removal filter bag (300), the right end of the blow pipe (600) is connected in series with an electromagnetic pulse valve (602), and the electromagnetic pulse valve (602) is electrically connected to an external single-chip computer.

6. The bag dust collector according to claim 1, characterized in that: A baffle (700) is provided at the lower left corner of the inner cavity of the dust removal box (100) near the dust inlet.

7. The bag filter according to claim 1, characterized in that: An observation window (800) is provided in an observation port arranged in the middle of the front surface of the dust removal box (100).

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