Pulse bag type dust collector

Abstract

A pulse bag type dust collector comprises a shell, a filtering mechanism and a dust collecting hopper, the filtering mechanism and the dust collecting hopper are vertically arranged in the shell, an air inlet pipe is arranged on one side of the dust collecting hopper, an exhaust port communicated with the air inlet pipe is formed in the upper portion of the filtering mechanism, and a wind blocking mechanism is arranged in the dust collecting hopper and comprises a wind blocking plate and a flow guiding piece arranged on one side of the lower portion of the wind blocking plate. The upper part is positioned above the air inlet pipe, and the lower part is vertically arranged on one side of a pipe orifice of the air inlet pipe; the flow guide piece is detachably arranged on the face, opposite to the pipe opening, of the lower portion of the wind shield and is of a conical structure. According to the utility model, dust-containing gas entering from the gas inlet pipe can be primarily guided through the wind shield, the dust-containing gas is dispersed to the inner periphery of the dust collecting hopper along the conical surface through the guide piece, and then the dust-containing gas flows upwards, is filtered by the filter bag of the filter mechanism, and is discharged from the exhaust port; the wind shield and the flow guide piece can reduce the flow speed of dust-containing gas, reduce impact on the filter bag, prolong the service life of the filter bag and improve the filtering effect of the filter bag.

Description

Technical Field

[0001] The utility model relates to the technical field of bag dust collectors, in particular to a pulse bag dust collector. Background Technique

[0002] A pulse bag dust collector is a dry dust removal device that uses a bag-shaped filter element made of fiber fabric to capture solid particles in the dust-containing gas. When the dust-containing gas enters the bag dust collector, dust particles with large particle size and high specific gravity settle down due to the action of gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, and the gas is purified.

[0003] A pulse bag dust collector generally includes a housing and a plurality of filter bags and ash hoppers arranged up and down in the housing. An air inlet is provided on one side of the ash hopper, and an exhaust port is provided at the upper part of the housing. The dust-containing gas enters from the air inlet and is discharged from the exhaust port after passing through the filter bags upward. However, when the existing pulse bag dust collector is in use, the dust-containing gas is directly blown towards the filter bags through the air inlet or only a baffle with a single structure is provided. The single baffle has limited guiding effect on the dust-containing gas, which will not only cause uneven air flow distribution of the dust-containing gas blowing towards the filter bags, affecting the filtering effect of the filter bags, but also cause some multi-filter bags to be impacted by too high flow velocity, and the particles in the dust-containing gas cause greater wear on the outer surface of the filter bags, shortening the service life of the filter bags. Content of the Utility Model

[0004] To solve the technical problems existing in the above background technique, the utility model provides a pulse bag dust collector.

[0005] The technical solution of the utility model is as follows:

[0006] A pulse bag dust collector includes a housing, a filtering mechanism and an ash hopper arranged up and down therein. An air inlet pipe is provided on one side of the ash hopper, and an exhaust port communicated with the air inlet pipe is provided at the upper part of the filtering mechanism. A wind shielding mechanism is arranged in the ash hopper. The wind shielding mechanism includes a wind shielding plate and a guiding member arranged on one side of the lower part thereof. The wind shielding plate is of a folded structure, the upper part of which is located above the air inlet pipe, and the lower part is vertically arranged on one side of the pipe orifice of the air inlet pipe;

[0007] The guiding member is detachably arranged on the surface of the lower part of the wind shielding plate opposite to the pipe orifice. The guiding member is of a conical structure, the axis of which is coaxial with the axis of the air inlet pipe, the conical tip of which is close to the pipe orifice, and the guiding member can move along the direction of its axis.

[0008] The dust-containing gas entering through the air deflector can be preliminarily guided, and the dust-containing gas is dispersed along its conical surface to the periphery of the ash hopper through the deflector. Then, the dust-containing gas flows upward and is filtered by the filter bag of the filtering mechanism, and is discharged from the exhaust port. The air deflector and the deflector can reduce the flow rate of the dust-containing gas, reduce the impact on the filter bag, extend the service life of the filter bag and improve the filtering effect of the filter bag.

[0009] The specific structure of the above-mentioned air deflector is that the air deflector includes an integrally formed upper plate and a vertical plate. One side of the upper plate is connected to the inner wall of the ash hopper, and the other side is arc-connected to the upper end of the vertical plate. The upper plate is arranged horizontally, and the width of the vertical plate is greater than the inner diameter of the air inlet pipe, and can block the dust-containing gas entering through the air inlet pipe at the edge.

[0010] To reduce the generation of more airflows flowing in the opposite direction to the dust-containing gas after being blocked by the air deflector, which affects the dispersion of the dust-containing gas, the upper plate is arranged horizontally, and a plurality of diversion holes are opened thereon. Some of the dust-containing gas diffusing upward through the deflector will reduce the flow rate after passing through the diversion holes and be evenly dispersed upward; the diversion holes can also blow away the dust particles on the upper plate through the diversion holes, avoiding the accumulation of dust on the upper plate and being inconvenient to clean.

[0011] Regarding the setting position of the vertical plate, the vertical distance between the vertical plane where the vertical plate is located and the vertical plane where the pipe orifice of the air inlet pipe is located is 20-60 cm.

[0012] The above-mentioned deflector can move along its axial direction, and the structure for adjusting the distance from the pipe orifice of the air inlet pipe is that the air deflector further includes a "[-shaped plate, the lower end of which is connected to the lower end of the vertical plate. A regulating rod is threadedly connected to the [-shaped plate along the axis of the deflector. The regulating rod passes through the vertical plate and is detachably connected to the side of the deflector away from the conical tip, and can adjust the distance between the deflector and the pipe orifice of the air inlet pipe in advance according to the intake volume and inlet air flow rate of the dust-containing gas.

[0013] The connection structure between the above-mentioned regulating rod and the deflector is that the end of the regulating rod close to the deflector is provided with a first retaining ring and a second retaining ring along its axis. The first retaining ring is arranged inside the deflector and is rotatably connected thereto. The second retaining ring is located between the deflector and the vertical plate, and its outer diameter is greater than the outer diameter of the regulating rod.

[0014] The flow rate of the dust-containing gas may be high or low. To reduce the impact force of the dust-containing gas on the deflector when the flow rate is high and extend the service life of the deflector, a return spring is sleeved on the regulating rod. The return spring is located between the first retaining ring and the second retaining ring. If the flow rate of the dust-containing gas is large, the return spring will be compressed, driving the deflector to move a certain distance in a small range away from the air inlet pipe, playing a buffering role.

[0015] The specific structure of the above-mentioned "["-shaped plate is that the "-shaped plate includes a vertical connecting plate, a first cross plate and a second cross plate which are arranged in parallel at the upper and lower ends of the vertical connecting plate. The first cross plate is closely arranged against the vertical plate, and its width is not less than that of the vertical plate. If there is a lot of dust accumulated on the second cross plate, which is located between the vertical connecting plate and the vertical plate and is not easy to clean, for this reason, the first cross plate is located above the vertical connecting plate, which can reduce the phenomenon that particles in the dust-containing gas accumulate on the second cross plate.

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

[0017] The windshield is arranged opposite to the nozzle of the intake pipe and has an appropriate distance from the nozzle, which can play a role in pre-guiding and dispersing the dust-containing gas input by the intake pipe; the dust-containing gas is directly guided by a single vertical plate, and the dust-containing gas with a higher flow rate will impact the vertical plate, making the vertical plate easy to deform, affecting the function of windshield and guiding, and it is also impossible to disperse the dust-containing gas evenly to contact the filtering mechanism in the ash collecting hopper. For this reason, a guiding member with a conical tip close to the nozzle is arranged on one side of the vertical plate. The outer side of the guiding member is a conical side, and the axis of the guiding member is consistent with the axis of the intake pipe. The dust-containing gas can be evenly dispersed outward along the conical side. The guiding member can reduce the speed of the dust-containing gas with a higher flow rate in advance, which can play a role in guiding and reduce the deformation phenomenon of the vertical plate;

[0018] A regulating rod is threadedly connected to the "-shaped plate along the axis direction of the guiding member. The regulating rod passes through the vertical plate and is detachably connected to the surface of the guiding member away from the conical tip, which can adjust the distance between the guiding member and the nozzle of the intake pipe in advance according to the intake volume and intake flow rate of the dust-containing gas, and then adjust the different dispersion effects of the dust-containing gas in the ash collecting hopper. If the guiding member is at a lower distance from the nozzle, the dust-containing gas will be quickly guided and dispersed, but after long-term use, the guiding member will be severely worn. If the guiding member is at a farther distance from the nozzle, the guiding and dispersing effect on the dust-containing gas will be weakened, but the wear on the guiding member can be reduced, and the path for the dust-containing gas to enter the ash collecting hopper can be extended, which is convenient for the dust-containing gas to be evenly dispersed in the middle of the ash collecting hopper. The position of the guiding member is adjusted according to the actual situation;

[0019] To reduce the impact force of the dust-containing gas on the guiding member when the flow rate is high and extend the service life of the guiding member, a return spring is sleeved on the regulating rod. The return spring is located between the first retaining ring and the second retaining ring. If the flow rate of the dust-containing gas is large, the return spring will be compressed, driving the guiding member to move a certain distance in a small range away from the intake pipe, playing a buffering role. Description of the Drawings

[0020] In the drawings:

[0021] Figure 1 It is a schematic structural diagram;

[0022] Figure 2 is a top view;

[0023] Figure 3 is Figure 2 a schematic cross-sectional structure view taken along the A-A direction of

[0024] Figure 4 is a schematic internal structure view of the dust collecting hopper;

[0025] Figure 5 is a schematic cross-sectional structure view of the dust collecting hopper;

[0026] Figure 6 is Figure 5 an enlarged structure view of the A position in

[0027] The components represented by the reference numerals in the figure are:

[0028] 1. housing; 2. filtering mechanism; 3. dust collecting hopper; 4. exhaust port; 5. intake pipe; 6. wind baffle; 61. upper plate; 611. diversion hole; 62. vertical plate; 7. diversion member; 8. adjusting rod; 9. return spring; 10. "[["-shaped plate; 101. first horizontal plate; 102. second horizontal plate; 103. vertical connecting plate; 11. first retaining ring; 12. second retaining ring. Specific embodiments

[0029] Referring to Figure 1 , Figure 2 and Figure 3 As shown, a pulse jet bag filter includes a housing 1 and a filtering mechanism 2 and a dust collecting hopper 3 arranged vertically therein. An intake pipe 5 is provided on one side of the dust collecting hopper 3, and an exhaust port 4 communicating with the intake pipe 5 is provided above the filtering mechanism 2. The above is the prior art. In the dust collecting hopper 3 of this embodiment, a wind blocking mechanism is provided. The wind blocking mechanism includes a wind baffle 6 and a diversion member 7 provided on one side of its lower part. The wind baffle 6 is of a folded structure, with its upper part located above the intake pipe 5 and its lower part vertically arranged on one side of the pipe orifice of the intake pipe 5.

[0030] The specific structure of the above wind baffle 6 is that the wind baffle 6 includes an integrally formed upper plate 61 and a vertical plate 62. One side of the upper plate 61 is connected to the inner wall of the dust collecting hopper 3, and the other side is arc-connected to the upper end of the vertical plate 62. The width of the vertical plate 62 is greater than the inner diameter of the intake pipe 5, and it can block the dust-containing gas entering from the intake pipe 5 at the edge. And the vertical distance between the vertical plane where the vertical plate 62 is located and the vertical plane where the pipe orifice of the intake pipe 5 is located is 20 - 60 cm.

[0031] To reduce the generation of a relatively large amount of air flow flowing in the direction opposite to the dust-containing gas after the dust-containing gas is blocked by the wind baffle 6, which affects the dispersion of the dust-containing gas, the upper plate 61 is horizontally arranged, and a plurality of diversion holes 611 are opened thereon. Part of the dust-containing gas diffused upward through the diversion member 7 will reduce its flow rate after passing through the diversion holes and be evenly dispersed upward.

[0032] The diversion member 7 is detachably arranged on the surface of the lower part of the wind baffle 6 opposite to the pipe orifice. The diversion member 7 is of a conical structure and can be a hollow structure inside. The axis of the diversion member 7 is coaxial with the axis of the intake pipe 5. The diversion member 7 includes a conical tip, and the conical tip is arranged close to the pipe orifice, and the diversion member 7 can move along its axis direction. The above-mentioned structure that the diversion member 7 can move along its axial direction to adjust the distance from the pipe orifice of the intake pipe 5 is that the wind baffle 6 further includes a "[-]" shaped plate 10, the lower end of which is connected to the lower end of the vertical plate 62. An adjusting rod 8 is threadedly connected to the "[-]" shaped plate 10 along the axis direction of the diversion member 7. The adjusting rod 8 passes through the vertical plate 62 and is detachably connected to the surface of the diversion member 7 away from the conical tip, so as to be able to adjust the distance between the diversion member 7 and the pipe orifice of the intake pipe 5 in advance according to the intake volume and intake air flow rate of the dust-containing gas.

[0033] The specific structure of the above-mentioned "[-]" shaped plate 10 is that the "[-]" shaped plate 10 includes a vertical connecting plate 103 and a first cross plate 101 and a second cross plate 102 arranged in parallel at the upper and lower ends of the vertical connecting plate 103. The first cross plate 101 is closely attached to the vertical plate 62, and its width is not less than the width of the vertical plate 62. If a relatively large amount of dust accumulates on the second cross plate 102, and the second cross plate 102 is located between the vertical connecting plate and the vertical plate 62, it is not convenient to clean. For this reason, the first cross plate 101 is located above the vertical connecting plate 103, which can reduce the phenomenon that particles in the dust-containing gas accumulate on the second cross plate 102.

[0034] The connection structure between the above-mentioned adjusting rod 8 and the diversion member 7 is that the end of the adjusting rod 8 close to the diversion member 7 is provided with a first retaining ring 11 and a second retaining ring 12 along its axis. The first retaining ring 11 is arranged inside the diversion member 7 and is rotatably connected thereto. The second retaining ring 12 is located between the diversion member 7 and the vertical plate 62, and its outer diameter is larger than the outer diameter of the adjusting rod 8. The flow rate of the dust-containing gas may be high or low. To reduce the impact force of the dust-containing gas on the diversion member 7 when the flow rate is high and extend the service life of the diversion member 7, a return spring 9 is sleeved on the adjusting rod 8. The return spring 9 is located between the first retaining ring 11 and the second retaining ring 12. If the flow rate of the dust-containing gas is relatively large, the return spring 9 will be compressed, driving the diversion member 7 to move a certain distance in a small range away from the intake pipe 5, playing a buffering role.

Claims

1. A pulse bag filter, comprising a housing (1), a filtering mechanism (2) and an ash hopper (3) arranged vertically therein. An air inlet pipe (5) is provided on one side of the ash hopper (3), and an exhaust port (4) communicating with the air inlet pipe (5) is provided above the filtering mechanism (2), characterized in that, A wind-blocking mechanism is provided inside the ash hopper (3). The wind-blocking mechanism includes a wind-blocking plate (6) and a flow guide member (7) provided on one side of its lower part. The wind-blocking plate (6) is of a folded structure, with its upper part located above the air inlet pipe (5) and its lower part vertically arranged on one side of the pipe orifice of the air inlet pipe (5). The flow guide member (7) is detachably arranged on the side of the lower part of the wind-blocking plate (6) opposite to the pipe orifice. The flow guide member (7) is of a conical structure, with its axis coaxial with the axis of the air inlet pipe (5), its conical tip close to the pipe orifice, and the flow guide member (7) can move along its axis direction.

2. The pulse jet bag filter according to claim 1, characterized in that, The wind-blocking plate (6) includes an integrally formed upper plate (61) and a vertical plate (62). One side of the upper plate (61) is connected to the inner wall of the ash hopper (3), and the other side is arc-connected to the upper end of the vertical plate (62). The width of the vertical plate (62) is greater than the inner diameter of the air inlet pipe (5).

3. The pulse jet bag filter according to claim 2, characterized in that, The upper plate (61) is arranged horizontally, and a plurality of flow guide holes (611) are provided thereon.

4. The pulse jet bag filter according to claim 2, wherein The vertical distance between the vertical plane where the vertical plate (62) is located and the vertical plane where the pipe orifice of the air inlet pipe (5) is located is 20 - 60 cm.

5. A pulse jet bag filter according to claim 2, characterized in that, The wind-blocking plate (6) further includes a "[“-shaped plate (10), the lower end of which is connected to the lower end of the vertical plate (62). An adjusting rod (8) is threadedly connected to the "[“-shaped plate (10) along the axis direction of the flow guide member (7). The adjusting rod (8) passes through the vertical plate (62) and is detachably connected to the side of the flow guide member (7) away from the conical tip.

6. The pulse jet bag filter according to claim 5, characterized in that, A first retaining ring (11) and a second retaining ring (12) are provided along the axis at the end of the adjusting rod (8) close to the flow guide member (7). The first retaining ring (11) is arranged inside the flow guide member (7) and is rotatably connected thereto. The second retaining ring (12) is located between the flow guide member (7) and the vertical plate (62), and its outer diameter is greater than the outer diameter of the adjusting rod (8).

7. A pulse jet bag filter according to claim 6, characterized in that, A return spring (9) is sleeved on the adjusting rod (8), and the return spring (9) is located between the first retaining ring (11) and the second retaining ring (12).

8. A pulse jet bag filter according to claim 5, characterized in that, The "[“-shaped plate (10) includes a vertical connecting plate (103) and a first cross plate (101) and a second cross plate (102) arranged in parallel at the upper and lower ends of the vertical connecting plate (103). The first cross plate (101) is closely attached to the vertical plate (62), and its width is not less than the width of the vertical plate (62).

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