Bag type dust collector with dust pre-collection function

Abstract

A bag type dust collector with a dust pre-collection function comprises a box body, the bottom of the box body is connected with a dust accumulation hopper in a penetrating mode, one side of the bottom of the box body is connected with an air inlet pipe in a penetrating mode, a dust pre-collection area is arranged in the box body above the air inlet pipe, and a bag type dust collection mechanism is arranged in the box body above the dust pre-collection area. Rotating shafts are rotationally connected to the inner walls of the two sides of the box body between the bag type dust collection mechanism and the dust collection area, a uniform distribution plate is fixedly connected between the rotating shafts, a rotating driving mechanism for rotating the rotating shafts is arranged on one side of the box body, a dust cleaning mechanism is arranged in the box body above the bag type dust collection mechanism, and an exhaust pipe is connected to one side of the top of the box body in a penetrating mode. According to the utility model, the concentration of dust entering the bag-type dust collection mechanism is reduced, the equipment can still stably and efficiently operate in a high-dust-concentration environment, and meanwhile, gas passing through the pre-dust-collection area can be uniformly distributed below the bag-type dust collection mechanism, so that the situation that part of filter bags are overloaded due to non-uniform gas flow velocity is avoided, and the service life of the equipment is prolonged. And part of the filter bags do not fully play a role.

Description

TECHNICAL FIELD

[0001] The utility model relates to bag type dust collector technical field, especially a kind of bag type dust collector with pre-dust collection. BACKGROUND

[0002] In industrial production process, a large amount of dust-containing gas will be generated, which will cause serious pollution to the environment if directly discharged into the atmosphere, and also harm human health and affect the normal operation of production equipment. As a common gas purification equipment, bag type dust collector has been widely used in industrial field.

[0003] The conventional bag type dust collector has some shortcomings when processing dust-containing gas. On the one hand, when the dust concentration in the dust-containing gas under working conditions is too high, the conventional bag type dust collector is difficult to achieve ideal dust removal effect. Due to the influx of a large amount of dust, the filter components will bear a great load, which will greatly increase the difficulty of dust cleaning, and the dust is easy to adhere to the filter components, which will not only significantly reduce the air volume of the fan, but also cause the pipeline system to be blocked. On the other hand, due to the uneven distribution of gas inside the dust collector, some filter bags are overloaded, while some filter bags do not fully play their role, which reduces the overall dust collection effect.

[0004] In summary, the existing bag type dust collector has the problems of easy blockage when processing high-concentration dust-containing gas and uneven distribution of gas inside the dust collector. In view of this, we propose a bag type dust collector with pre-dust collection to solve the above problems. SUMMARY

[0005] The utility model aims at providing a bag type dust collector with pre-dust collection, which is used to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides a technical scheme: a bag type dust collector with pre-dust collection, comprising a box body, a dust accumulation hopper is connected through the bottom of the box body, a gas inlet pipe is connected through one side of the bottom of the box body, a pre-dust collection area is provided inside the box body above the gas inlet pipe, baffles are alternately arranged between the inner walls on both sides of the pre-dust collection area, a bag type dust collection mechanism is provided above the pre-dust collection area, a uniform distribution plate in linear array is rotatably arranged between the bag type dust collection mechanism and the dust collection area, a rotating drive mechanism is provided on one side of the box body to rotate the uniform distribution plate, a dust cleaning mechanism is provided inside the box body above the bag type dust collection mechanism, and an exhaust pipe is connected through one side of the box body above the dust cleaning mechanism.

[0007] Preferably, the pre-dust collection area is gradually expanded from bottom to top, four layers of baffles are arranged between the inner walls on both sides of the pre-dust collection area, and the baffles are inclined downward.

[0008] Preferably, the dust collecting mechanism comprises a flower plate slidingly connected between the inner walls of the two sides of the box, a plurality of air holes are uniformly distributed in the flower plate, and a filter bag penetrating the air holes is detachably installed at the bottom end of the flower plate.

[0009] Preferably, the ash removal mechanism comprises a spray pipe arranged in the box above the flower plate, a spray port corresponding to the air hole is arranged on the side of the spray pipe close to the flower plate, a Venturi tube is arranged at the spray port, and a gas storage tank is connected to the spray pipe penetrating through the side wall of the box.

[0010] Preferably, at least two rows of rotation shafts arranged in linear array are rotationally connected to the two side walls of the box between the bag type dust collecting mechanism and the dust collecting area.

[0011] Preferably, the air holes of the uniform distribution plate gradually decrease in diameter from the side close to the air inlet pipe to the side away from the air inlet pipe.

[0012] Preferably, the rotation driving mechanism comprises a driving shell arranged on one side of the box, the rotation shaft close to the driving shell is rotationally connected to the inner wall of the driving shell penetrating through the side wall of the box, a first helical gear is fixedly connected to the surface of the rotation shaft in the driving shell, a second helical gear is meshingly connected to one side of the first helical gear, a rotation rod is fixedly connected in the second helical gear, the rotation rod is rotationally connected to the inner wall of the driving shell at both ends, a turbine is fixedly sleeved on the surface of the rotation rod, a worm is meshingly connected to one side of the turbine, the worm is rotationally connected to the inner wall of the driving shell at both ends, and a driving motor is drivingly connected to one end of the worm penetrating through the inner wall of the driving shell.

[0013] Preferably, a maintenance opening is formed in the front side of the box, a door plate is hinged in the maintenance opening, and a handle is installed on the outer side of the door plate.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] 1. The load of the filter part caused by high concentration dust is reduced, at least four layers of baffle plates alternating with each other and inclined downwardly across the central axis of the box are arranged between the inner walls of the two sides of the dust collecting area in the box arranged above the air inlet pipe, so that the dust containing gas entering the box is preliminarily separated and falls into the dust collecting hopper under the action of inertial collision and gravity sedimentation, the dust concentration entering the bag type dust collecting mechanism is effectively reduced, and the load of the filter bag is greatly reduced, thereby solving the problems of the traditional bag type dust collector under high dust concentration conditions, such as the filter part bearing great load due to a large amount of dust flowing in, the difficulty of ash removal greatly increasing, the dust easily adhering to the filter part to cause the air volume of the fan to be significantly reduced, and the pipeline system being blocked, and ensuring that the equipment can still stably and efficiently operate under the high dust concentration environment, prolonging the service life of the equipment and improving the overall production efficiency and economic benefits.

[0016] 2. Avoid partial filter bag due to uneven gas flow, by setting the uniform distribution plate between the bag type dust collection mechanism and the pre-dust collection area, the air hole diameter of the uniform distribution plate gradually decreases from the side close to the gas inlet pipe to the side away from the gas inlet pipe, and under the action of the rotating drive mechanism composed of the driving shell, the first spiral gear, the second spiral gear, the turbine, the worm and the driving motor and the rotating rod, the gas passing through the pre-dust collection area can be uniformly distributed under the bag type dust collection mechanism, avoiding the situation that part of the filter bag in the bag type dust collector is overloaded due to uneven gas flow, and part of the filter bag does not fully play a role, ensuring that each filter bag in the bag type dust collection mechanism can fully and evenly play a filtering role, improving the overall dust collection effect and reducing the dust escape phenomenon. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structure schematic view of the utility model;

[0018] Fig. 2 It is a structure schematic view of the utility model inside the box body;

[0019] Fig. 3 It is a structure schematic view of the utility model inside the driving shell.

[0020] In the drawing: 1, box body; 2, dust hopper; 3, gas inlet pipe; 4, pre-dust collection area; 5, baffle; 6, rotating shaft; 7, uniform distribution plate; 8, dust collection mechanism; 81, flower plate; 82, filter bag; 9, ash removal mechanism; 91, blow pipe; 92, venturi; 93, gas storage tank; 10, rotating drive mechanism; 101, driving shell; 102, first spiral gear; 103, second spiral gear; 104, turbine; 105, worm; 106, driving motor; 107, rotating rod; 11, door plate; 12, handle; 13, exhaust pipe. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] In order to further understand the content of the utility model, the utility model will be described in detail in combination with the drawings.

[0023] In combination with Figs. 1-3The utility model provides a bag type dust collector with pre-dust collection, including the box 1, the box 1 bottom is connected with the dust hopper 2 through, the box 1 bottom one side is connected with the inlet pipe 3 through, the box 1 inside is provided with pre-dust collection area 4 above the inlet pipe 3, the baffle 5 is alternately arranged between pre-dust collection area 4 two sides inner wall, when dust-containing gas enters, the baffle 5 changes airflow direction, larger particle dust collides on the baffle 5 due to inertia, and under the action of gravity, slide to the dust hopper 2, realize preliminary separation, pre-dust collection area 4 is provided with bag type dust collection mechanism 8 above, dust is intercepted and filtered in bag type dust collection mechanism, and the uniformly distributed plate 7 in linear array distribution is rotatably arranged between bag type dust collection mechanism and dust collection area 4, the one side of box 1 is provided with the rotation drive mechanism 10 of making the uniformly distributed plate 7 rotate, and the rotation drive mechanism makes the uniformly distributed plate 7 rotate, and gas is evenly dispersed, and the ascending dust-containing gas can evenly enter subsequent bag type dust collection mechanism, and the dust cleaning mechanism 9 is arranged in the box 1 above bag type dust collection mechanism, when dust of dust collection mechanism accumulates to certain degree, need dust cleaning mechanism to carry out dust cleaning operation, to filter performance of dust collection mechanism, the exhaust pipe 13 is connected through on the one side of box 1 above dust cleaning mechanism 9.

[0024] Pre-dust collection area 4 is gradually expanded from bottom to top, the flow rate of dust-containing gas gradually reduces after entering, which is conducive to dust settlement, four layers of baffles 5 are arranged between the inner walls of the two sides of the pre-dust collection area 4, which alternately pass through the central axis of the box 1, the baffles 5 are inclined downward to reduce dust adhesion.

[0025] The dust collection mechanism 8 includes a flower plate 81 slidably connected between the inner walls of the two sides of the box by a sliding groove and sliding block structure, facilitating the placement and removal of the flower plate 81. The flower plate 81 uniformly has a plurality of air holes. The bottom end of the flower plate 81 is detachably installed with a filter bag 82 penetrating the air holes by a threaded connection, facilitating the replacement of the filter bag 82.

[0026] The dust cleaning mechanism 9 includes a blowing pipe 91 arranged in the box 1 above the flower plate 81. The blowing pipe 91 is provided with a blowing port corresponding to the air holes on the side close to the flower plate 81. The blowing port is provided with a Venturi tube 92. The blowing pipe 91 penetrates the side wall of the box 1 and is connected through a gas storage tank 93. The high-pressure gas in the gas storage tank 93 is sprayed from the Venturi tube 92 to the air holes of the flower plate 81 through the blowing pipe 91.

[0027] At least two rows of rotating shafts 6 are rotatably connected to the side walls of the box 1 between the bag type dust collection mechanism and the dust collection area 4, which are linearly arrayed. The uniformly distributed plates 7 are fixedly connected between the rotating shafts 6 corresponding to the side walls of the box 1.

[0028] The air hole diameter of the uniformly distributed plate 7 gradually decreases from the side close to the inlet pipe 3 to the side away from the inlet pipe 3. Due to the gradual change of the hole diameter, the gas can be more evenly distributed below the bag type dust collection mechanism. In close cooperation with the rotating shaft 6 and the rotation drive mechanism, the uniformly distributed plate 7 stably rotates, so that the gas uniformly flows to each filter bag 10.

[0029] The rotary drive mechanism 10 includes a drive housing 101 disposed on one side of the housing. A rotating shaft 6, located near the drive housing 101, passes through the side wall of the housing 1 and is rotatably connected to the inner wall of the drive housing 101. A first helical gear 102 is fixedly connected to the surface of the rotating shaft 6 inside the drive housing 101. A second helical gear 103 is meshed with one side of the first helical gear 102. A rotating rod 107 is fixedly connected to the second helical gear 103. Both ends of the rotating rod 107 are rotatably connected to the inner wall of the drive housing 101. A turbine 104 is fixedly sleeved on the surface of the rotating rod 107. A worm gear 105 is meshed with one side of the 04. Both ends of the worm gear 105 are rotatably connected to the inner wall of the drive housing 101. One end of the worm gear 105 passes through the inner wall of the drive housing 101 and is connected to a drive motor 106. The drive motor 106 drives the worm gear 105 to rotate. The worm gear 105 drives the turbine 104 to rotate, which in turn drives the rotating rod 107 and the second helical gear 103 to rotate. The second helical gear 103 drives the first helical gear 102 to rotate. The first helical gear 102 drives the rotating shaft 6 to rotate, and finally makes the uniformly distributed plate 7 rotate stably.

[0030] An inspection port is provided on the front side of the enclosure 1, and a door panel 11 is hinged in the inspection port. A handle 12 is installed on the outside of the door panel. The door panel 11 on the front side of the enclosure 1 is opened by the handle 12 for operation, so that the operator can open and close the inspection port to inspect, repair or replace the various components inside the enclosure 1.

[0031] Working principle:

[0032] When the dust-laden gas enters the housing 1 through the inlet pipe 3, it first enters the pre-dust collection zone 4. Larger dust particles are blocked and guided by the multi-layer baffles 5 due to inertial collision and gravity settling, thus initially separating and falling into the dust collection hopper 2. This process effectively reduces the dust concentration entering the bag filter mechanism and reduces the load on the subsequent filter components.

[0033] The gas continues to rise after passing through the pre-dust collection zone 4. It passes through the uniform distribution plate 7. The rotating shaft 6 rotates continuously under the action of the rotation drive mechanism composed of the drive housing 101, the first helical gear 102, the second helical gear 103, the turbine 104, the worm gear 105, the drive motor 106, and the rotating rod 107. This causes the uniform distribution plate 7 to rotate, so that the rising dust-laden gas can be evenly distributed below the bag dust collection mechanism. This avoids the problem of local filter bags being overloaded due to uneven gas flow rate, and ensures the efficient operation of all parts of the bag dust collection mechanism.

[0034] After the dust-laden gas enters the baghouse dust collection mechanism, the dust is intercepted by the filter bag 82, and the purified gas is discharged through the exhaust pipe 13, thereby achieving efficient filtration and collection of dust.

[0035] When the filter bag 82 needs to be cleaned, the cleaning mechanism is started, the high-pressure gas in the gas storage tank 93 is sprayed out from the venturi tube 92 through the spray pipe 91, a strong impact force is generated, the filter bag 82 is vibrated, and the dust adhered to the surface of the filter bag 82 is shaken off. At the same time, the uniform distribution plate 7 is vertically distributed in the box body 1 by starting the driving motor 106, the dust shaken off falls into the dust hopper 2, the cleaning process is completed, and the continuous and efficient filtering performance of the filter bag 82 is ensured.

[0036] During the operation of the equipment, if the internal components need to be overhauled, the door plate 11 at the front side of the box body 1 can be opened through the handle 12 to operate, the operation personnel can conveniently open and close the maintenance opening, and thus each component in the box body 1 can be checked, maintained or replaced, and the normal operation and long-term stable work of the equipment are ensured.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A bag filter with pre-dedusting, comprising a box (1), a dust hopper (2) is connected through the bottom of the box (1), characterized in that: The bottom side of the box (1) is connected with an air inlet pipe (3), the upper side of the air inlet pipe (3) is provided with a pre-dust collection area (4) in the box (1), the two side walls of the pre-dust collection area (4) are alternately provided with baffles (5), the upper side of the pre-dust collection area (4) is provided with a bag dust collection mechanism (8), the bag dust collection mechanism and the dust collection area (4) are rotatably provided with uniformly distributed plates (7) in linear array, the side of the box (1) is provided with a rotating drive mechanism (10) for rotating the uniformly distributed plates (7), the upper side of the box (1) is provided with a dust cleaning mechanism (9), and the side of the upper side of the box (1) is connected with an air outlet pipe (13).

2. A baghouse with pre-collection according to claim 1, characterized in that: The pre-dust collection area (4) is gradually expanded from bottom to top, four layers of baffles (5) are arranged between the two side walls of the pre-dust collection area (4) and pass through the central axis of the box (1), and the baffles (5) are inclined downward.

3. A baghouse with pre-collection according to claim 1, characterized in that: The dust collection mechanism (8) comprises a flower plate (81) slidably connected between the two side walls of the box, a plurality of air holes are uniformly distributed in the flower plate (81), and a filter bag (82) penetrating the air holes is detachably installed at the bottom end of the flower plate (81).

4. A baghouse with pre-collection according to claim 3, characterized in that: The dust cleaning mechanism (9) comprises a blowing pipe (91) arranged in the box (1) above the flower plate (81), the blowing pipe (91) is provided with a blowing port corresponding to the air hole on the side close to the flower plate (81), a Venturi tube (92) is arranged at the blowing port, and the blowing pipe (91) penetrates the side wall of the box (1) and is connected with a gas storage tank (93).

5. A baghouse with pre-collection according to claim 1, characterized in that: The two side walls of the box (1) between the bag dust collection mechanism and the dust collection area (4) are rotatably connected with at least two rows of rotating shafts (6) in linear array, and the uniformly distributed plates (7) are fixedly connected between the corresponding rotating shafts (6) of the two side walls of the box (1).

6. A baghouse with pre-collection according to claim 5, characterized in that: The air hole diameter of the uniformly distributed plate (7) gradually decreases from the side close to the air inlet pipe (3) to the side away from the air inlet pipe (3).

7. A baghouse with pre-collection according to claim 5, characterized in that: The rotating drive mechanism (10) comprises a driving shell (101) arranged on the side of the box, the rotating shaft (6) close to the driving shell (101) is rotatably connected with the inner wall of the driving shell (101) through the side wall of the box (1), a first helical gear (102) is fixedly connected to the surface of the rotating shaft (6) in the driving shell (101), a second helical gear (103) is engagedly connected to one side of the first helical gear (102), a rotating rod (107) is fixedly connected in the second helical gear (103), the two ends of the rotating rod (107) are rotatably connected with the inner wall of the driving shell (101), a turbine (104) is fixedly sleeved on the surface of the rotating rod (107), a worm (105) is engagedly connected to one side of the turbine (104), the two ends of the worm (105) are rotatably connected with the inner wall of the driving shell (101), and one end of the worm (105) is drivingly connected with a driving motor (106) penetrating the inner wall of the driving shell (101).

8. A baghouse with pre-collection according to claim 1, characterized in that: A maintenance opening is formed in the front side of the box (1), a door plate (11) is hingedly connected in the maintenance opening, and a handle (12) is mounted on the outer side of the door plate.

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