Dust treatment device of wood crushing equipment

Abstract

The invention relates to the technical field of dust treatment, and discloses a wood crushing equipment dust treatment device which comprises a separation box and further comprises a conical barrel connected to the outer wall of the separation box through two fixing rings; the guide pipe is connected between the separation box and the conical barrel, a cylindrical cavity is formed in the separation box, one end of the guide pipe is located at the tangent line of the cylindrical cavity, and the other end of the guide pipe enters in the tangent line direction of the conical barrel; the feeding pipe is mounted on one side of the separation box and used for guiding wood dust into the separation box; and the separating mechanism is arranged in the cylindrical cavity of the separating box and used for primarily separating wood dust. According to the invention, primary efficient separation of dust is realized through direct interception of the rotating sieve plate in the separation box, then gas forms a reinforced spiral flow field in the conical barrel, secondary capture is carried out on fine dust by using centrifugal force, and the overall separation efficiency and recovery rate of dust with different particle sizes are greatly improved through a combined separation process; and the cleanliness of the discharged gas is ensured.

Description

A dust treatment device for wood crushing equipment Technical Field

[0001] This invention relates to the field of dust treatment technology, specifically to a dust treatment device for wood crushing equipment. Background Technology

[0002] In the fields of wood processing, furniture manufacturing, and artificial board production, wood crushing is a common pre-treatment process. However, the crushing process generates a large amount of dust with varying particle sizes and high concentrations. If this dust is discharged directly without effective treatment, it will not only seriously pollute the working environment and endanger the health of operators, but also pose an explosion risk, waste usable raw materials, and violate increasingly stringent environmental regulations.

[0003] Currently, common technologies for treating wood pulverization dust include cyclone separation and bag filtration. Traditional single-stage cyclone separators mainly rely on centrifugal force to separate dust. They are simple in structure and low in cost, but their separation efficiency is limited for wood fiber dust with small particle size and low density. A large amount of fine dust will be discharged with the airflow, making it difficult to meet high emission standards. While bag filters offer high filtration accuracy, they have high equipment resistance and energy consumption. Moreover, for wood dust with high moisture content and easy adhesion, the filter bags are prone to caking and clogging, requiring frequent shutdowns for manual cleaning or replacement. This seriously affects the continuity of production operations and increases maintenance costs and labor intensity. In addition, some existing improved equipment attempts to combine multi-stage separation or add cleaning devices to the separation components, such as adding a secondary cyclone after primary separation or installing mechanical scrapers. However, these solutions often have the following shortcomings.

[0004] Incomplete cleaning or the presence of blind spots: Fixed scrapers cannot completely remove the fine dust adhering to the surface of high-speed rotating parts, and the separation efficiency will still decrease after long-term operation. Therefore, a dust treatment device for wood crushing equipment is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a dust treatment device for wood crushing equipment, which addresses the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a dust treatment device for wood crushing equipment, including a separation box, and further comprising: a conical cylinder connected to the outer wall of the separation box by two fixing rings; a conduit connected between the separation box and the conical cylinder, wherein a cylindrical cavity is provided inside the separation box, and one end of the conduit is located at the tangent of the cylindrical cavity, and the other end enters along the tangent direction of the conical cylinder; a feed pipe installed on one side of the separation box for introducing wood dust into the separation box; a separation mechanism disposed in the cylindrical cavity of the separation box for initial separation of wood dust; and a discharge pipe installed at the bottom of the separation box. The separation mechanism includes: a rotating sleeve installed in the cylindrical cavity of the inner wall of the separation box; a turbine connected to the inner wall of the rotating sleeve via a drive shaft, with one side of the drive shaft driving the turbine to rotate via an external drive device; a rotating drum installed on the outer wall of the drive shaft and located outside the turbine, with multiple equidistant mounting holes on the outer wall of the rotating drum; and multiple sieve plates installed on the inner wall of each mounting hole for separating wood dust.

[0007] Preferably, the blocking mechanism includes: a scraper, fixedly connected to the inner wall of the cylindrical cavity of the separation box and in contact with the outer wall of the rotating drum and the screen plate, for blocking dust from moving upward; and a cleaning assembly, disposed on the inner wall of the cylindrical cavity of the separation box and mirror-symmetrical to the scraper, located above the feed pipe.

[0008] Preferably, the cleaning assembly includes: a slider slidably connected to an installation groove opened in the inner wall of the separation box; multiple sliding columns fixedly connected to the installation groove, with the slider sliding on the inner wall of the sliding columns; and multiple springs sleeved on the outer wall of the sliding columns for pushing the slider to fit against the outer wall of the rotating drum.

[0009] Preferably, the outer wall of the slider is provided with a groove, and the inner wall of the groove is fitted with multiple bristles that adhere to the outer wall of the screen plate for cleaning dust adhering to the screen plate.

[0010] Preferably, the conical cylinder is used for spiral separation of the initially separated dust, and the heavier dust spirals down along the inner wall of the conical cylinder; the inner wall of the conical cylinder is provided with a secondary blocking mechanism for secondary blocking of dust in the gas, the secondary blocking mechanism including: an exhaust pipe, fixedly connected to the top of the conical cylinder and extending into the interior of the conical cylinder for exhausting gas; and a chute, formed on the inner wall of the exhaust pipe, and a permeable plate slidably connected to the inner wall of the chute for secondary blocking of dust in the gas.

[0011] Preferably, the secondary blocking mechanism further includes: a second spring, disposed on the inner wall of the slide groove, for supporting the ventilated plate upwards; and a pushing component, disposed on the inner wall of the exhaust pipe, for causing the ventilated plate to vibrate.

[0012] Preferably, the pushing assembly includes: two sets of cross-shaped fixing rods, equidistantly fixed to the inner wall of the exhaust pipe; a rotating rod, rotatably connected to the axis of the two sets of cross-shaped fixing rods, and a turbine II is fixedly sleeved on the outer wall of the rotating rod, which drives the turbine II to rotate following the exhaust airflow; a push rod, fixedly connected to the top of the vent plate, and the top of the push rod has multiple circumferentially arranged contact grooves; an L-shaped push rod is fixedly connected to the lower part of the outer wall of the rotating rod, and the other end of the L-shaped push rod fits into the push rod and the contact groove.

[0013] Preferably, there are two L-shaped push rods, which are symmetrically arranged on both sides of the outer wall of the rotating rod to abut against the movement of the push rod; the front of the separation box is equipped with a hatch for closing the cylindrical cavity.

[0014] The present invention adopts the above technical solution and can bring the following beneficial effects: 1. The dust treatment device of the wood crushing equipment achieves the initial efficient separation of dust by directly intercepting it with a rotating screen plate in the separation box. Subsequently, the gas forms an enhanced spiral flow field in the conical cylinder and uses centrifugal force to collect the fine dust for a second time. The combined separation process greatly improves the overall separation efficiency and recovery rate of dust of different particle sizes and ensures the cleanliness of the emitted gas.

[0015] 2. The dust treatment device of this wood crushing equipment continuously scrapes the rotating screen plate during equipment operation through a spring-pressed slider and brush assembly, preventing dust from adhering and accumulating at the screen holes, thus ensuring the long-term stability of the primary separation efficiency.

[0016] 3. The dust treatment device of this wood crushing equipment uses the purified exhaust airflow to drive the turbine and L-shaped push rod, so that the permeable plate used for final filtration generates periodic high-frequency vibration, automatically shaking off the accumulated dust and avoiding poor exhaust caused by the clogging of the permeable plate. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of the present invention; Figure 2 is a schematic diagram of the back structure of the present invention; Figure 3 is a schematic diagram of the internal structure of the present invention; Figure 4 is a schematic diagram of the secondary blocking mechanism of the present invention; Figure 5 is an enlarged schematic diagram of section A in Figure 4 of the present invention; Figure 6 is a schematic diagram of the separation mechanism of the present invention; Figure 7 is an exploded schematic diagram of the present invention; Figure 8 is a schematic diagram of the internal structure of the separation box of the present invention; Figure 9 is an enlarged schematic diagram of section B in Figure 9 of the present invention.

[0018] In the diagram: 1. Separation box; 2. Guide tube; 3. Conical cylinder; 4. Discharge pipe; 5. Feed pipe; 6. Separation mechanism; 61. Turbine I; 62. Rotary drum; 63. Screen plate; 64. Rotating sleeve; 7. Blocking mechanism; 71. Sliding block; 72. Sliding column; 73. Spring I; 74. Groove; 75. Brush bristles; 76. Scraper; 8. Door; 9. Secondary blocking mechanism; 91. Exhaust pipe; 92. Slide groove; 93. Ventilation plate; 94. Spring II; 95. Push rod; 96. Contact groove; 97. L-shaped push rod; 98. Cross fixing rod; 99. Turbine II; 910. Rotating rod; 10. Fixing ring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please refer to Figures 1-9. One embodiment of the present invention is as follows: a dust treatment device for wood crushing equipment, including a separation box 1, and further including: a conical cylinder 3, connected to the outer wall of the separation box 1 by two fixing rings 10; a conduit 2, connected between the separation box 1 and the conical cylinder 3, wherein the separation box 1 has a cylindrical cavity, and one end of the conduit 2 is located at the tangent of the cylindrical cavity, and the other end enters along the tangent direction of the conical cylinder 3; a feed pipe 5, installed on one side of the separation box 1, for introducing wood dust into the separation box 1; a separation mechanism 6, disposed in the cylindrical cavity of the separation box 1, for initial separation of wood dust; and a discharge pipe 4, installed at the bottom of the separation box 1, for guiding... The separation chamber 6 contains the separated dust. A blocking mechanism 7 is installed within the cylindrical cavity of the separation chamber 1 and is used to clean the dust adhering to the separation mechanism 6. The separation mechanism 6 includes: a rotating sleeve 64 installed in the cylindrical cavity of the inner wall of the separation chamber 1; a turbine 61 rotatably connected to the inner wall of the rotating sleeve 64 via a drive shaft, and one side of the drive shaft of the turbine 61 is driven to rotate by an external drive device; a rotating drum 62 installed on the outer wall of the drive shaft and located outside the turbine 61, and the outer wall of the rotating drum 62 has multiple equidistant mounting holes; and multiple sieve plates 63, respectively installed on the inner wall of each mounting hole, for separating wood dust.

[0021] The blocking mechanism 7 includes: a scraper 76, which is fixedly connected to the inner wall of the cylindrical cavity of the separation box 1 and fits against the outer wall of the rotating drum 62 and the screen plate 63 to block dust from moving upward; and a cleaning assembly, which is set on the inner wall of the cylindrical cavity of the separation box 1 and mirror-symmetrical to the scraper 76, located above the feed pipe 5.

[0022] The cleaning assembly includes: a slider 71, which is slidably connected to an installation groove opened in the inner wall of the separation box 1; multiple sliding columns 72, which are fixedly connected to the installation groove, and the slider 71 slides on the inner wall of the sliding column 72; and multiple springs 73, which are sleeved on the outer wall of the sliding column 72 and used to push the slider 71 to fit against the outer wall of the rotating drum 62.

[0023] The outer wall of the slider 71 has a groove 74, and the inner wall of the groove 74 is fitted with multiple bristles 75 and attached to the outer wall of the screen plate 63 for cleaning dust adhering to the screen plate 63.

[0024] The conical cylinder 3 is used for spiral separation of the initially separated dust, and the heavier dust spirals down along the inner wall of the conical cylinder 3; the inner wall of the conical cylinder 3 is provided with a secondary blocking mechanism 9 for secondary blocking of dust in the gas. The secondary blocking mechanism 9 includes: an exhaust pipe 91, which is fixedly connected to the top of the conical cylinder 3 and extends into the interior of the conical cylinder 3 for exhausting gas; and a chute 92, which is opened on the inner wall of the exhaust pipe 91, and a permeable plate 93 is slidably connected to the inner wall of the chute 92 for secondary blocking of dust in the gas.

[0025] The secondary blocking mechanism 9 also includes: a second spring 94, which is disposed on the inner wall of the slide groove 92 and is used to support the vent plate 93 upward; and a pushing component, which is disposed on the inner wall of the exhaust pipe 91 and is used to make the vent plate 93 vibrate.

[0026] The actuating assembly includes: two sets of cross-shaped fixing rods 98, which are equidistantly fixed to the inner wall of the exhaust pipe 91; a rotating rod 910, which is rotatably connected to the axis of the two sets of cross-shaped fixing rods 98, and a turbine 99 is fixedly sleeved on the outer wall of the rotating rod 910, which drives the turbine 99 to rotate following the exhaust airflow; a push rod 95, which is fixedly connected to the top of the vent plate 93, and a plurality of circumferentially arranged contact grooves 96 are opened on the top of the push rod 95; an L-shaped push rod 97 is fixedly connected to the lower part of the outer wall of the rotating rod 910, and the other end of the L-shaped push rod 97 is attached to the push rod 95 and the contact groove 96.

[0027] There are two L-shaped push rods 97, which are symmetrically arranged on both sides of the outer wall of the rotating rod 910 to move against the push rod 95; the front of the separation box 1 is equipped with a hatch 10 for closing the cylindrical cavity.

[0028] Working principle: The dust-laden gas mixture generated during the wood crushing process enters the cylindrical cavity inside the separator 1 through the feed pipe 5. At this time, the external drive device drives the turbine 61 and its drive shaft to rotate at high speed, which drives the rotating drum 62 fixed on the drive shaft and multiple screen plates 63 evenly installed on the outer wall of the rotating drum to rotate together. Under the action of centrifugal force generated by the rotation, the larger dust particles in the gas are thrown towards the inner wall of the separator 1 and fall down the wall due to loss of kinetic energy. At the same time, the rotating screen plates 63 further cut, intercept and screen the airflow, so that some fine dust adheres to the surface of the screen plates 63, realizing the initial separation of dust and gas. The initially separated dust is collected and discharged through the discharge pipe 4 under the action of gravity. Furthermore, the scraper 76 fixed to the inner wall of the separator 1 is close to the rotating drum 62 and the outer wall of the screen plates 63. Its functions are twofold: first, to physically block the dust thrown out by centrifugal force from overflowing with the airflow and force it to fall down; second, to scrape off the dust that may accumulate on the outer wall of the rotating drum.

[0029] Furthermore, the cleaning assembly, which is mirror-symmetrically arranged above the feed pipe and located above the scraper 76, has a slider 71 that is pressed tightly against the outer surface of the rotating screen plate 63 under the continuous action of the spring 73. The bristles 75 in the slider groove 74 continuously brush the screen plate, effectively removing the dust adhering to the screen plate during operation, preventing screen hole blockage, and ensuring the long-term stability of screening efficiency.

[0030] The gas, still containing fine dust after the initial separation, is drawn into the conical cylinder 3 under pressure through conduit 2 along its tangential direction. This creates a strong spiral downward airflow within the conical cylinder 3. During this spiral motion, the dust particles in the gas are subjected to stronger centrifugal force and are thrown towards the inner wall of the conical cylinder 3. Due to the conical structure, the radius of rotation of the airflow gradually decreases, the centrifugal force increases, and the separation effect is improved. Heavier dust particles spiral down the inner wall of the conical cylinder 3 to the bottom for collection, achieving secondary separation of fine dust. After two stages of separation, the relatively clean... The gas converges at the center of the top of the conical cylinder. The gas must pass through the vent plate 93 to enter the exhaust pipe 91 for discharge. The vent plate 93 can further intercept the extremely fine dust remaining in the gas. The rising airflow drives the turbine 2 99 to rotate, which drives the rotating rod 910 and the L-shaped push rod 97 fixed at its lower end to rotate. The L-shaped push rod 97 periodically pushes the abutment groove 96 on the push rod 95 at the top of the vent plate, causing the vent plate to overcome the elasticity of the spring 2 94 and produce periodic up and down vibration. This vibration can effectively shake off the dust accumulated on the vent plate, prevent it from clogging, and ensure smooth exhaust and continuous filtration effect.

[0031] This invention provides a dust treatment device for wood crushing equipment. There are many methods and approaches to implement this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A dust treatment device for wood crushing equipment, comprising a separation box (1), characterized in that, Also includes: A conical cylinder (3) is connected to the outer wall of the separation box (1) by two fixing rings (10); a conduit (2) is connected between the separation box (1) and the conical cylinder (3), and a cylindrical cavity is provided inside the separation box (1), with one end of the conduit (2) located at the tangent of the cylindrical cavity and the other end entering along the tangent direction of the conical cylinder (3); a feed pipe (5) is installed on one side of the separation box (1) for introducing wood dust into the separation box (1); a separation mechanism (6) is set in the cylindrical cavity of the separation box (1) for initial separation of wood dust; a discharge pipe (4) is installed at the bottom of the separation box (1) for discharging the dust separated by the separation box (1); and a blocking mechanism (7). The separation mechanism (6) is set in the cylindrical cavity of the separation box (1) and is used to clean the dust attached to the separation mechanism (6); wherein the separation mechanism (6) includes: a rotating sleeve (64), which is installed in the cylindrical cavity of the inner wall of the separation box (1); a turbine (61), which is rotatably connected to the inner wall of the rotating sleeve (64) through a drive shaft, and the turbine (61) is driven to rotate by an external drive device on one side of the drive shaft; a rotating cylinder (62), which is installed on the outer wall of the drive shaft and is set on the outer side of the turbine (61), and the outer wall of the rotating cylinder (62) has a plurality of equally spaced mounting holes; and a plurality of sieve plates (63), which are respectively installed on the inner wall of each mounting hole for separating wood dust.

2. The dust treatment device for wood crushing equipment according to claim 1, characterized in that: The blocking mechanism (7) includes: a scraper (76), which is fixedly connected to the inner wall of the cylindrical cavity of the separation box (1) and fits against the outer wall of the rotating drum (62) and the screen plate (63) to block dust from moving upward; and a cleaning component, which is set on the inner wall of the cylindrical cavity of the separation box (1) and mirror-symmetrical to the scraper (76), and is located above the feed pipe (5).

3. The dust treatment device for wood crushing equipment according to claim 2, characterized in that: The cleaning assembly includes: a slider (71) slidably connected to an installation groove opened in the inner wall of the separation box (1); multiple sliding columns (72) fixedly connected in the installation groove, with the slider (71) sliding on the inner wall of the sliding column (72); and multiple springs (73) sleeved on the outer wall of the sliding column (72) for pushing the slider (71) to fit against the outer wall of the rotating drum (62).

4. The dust treatment device for wood crushing equipment according to claim 3, characterized in that: The outer wall of the slider (71) is provided with a groove (74), and the inner wall of the groove (74) is equipped with multiple bristles (75) and attached to the outer wall of the sieve plate (63) for cleaning the dust attached to the sieve plate (63).

5. The dust treatment device for wood crushing equipment according to claim 4, characterized in that: The conical cylinder (3) is used to spirally separate the dust after initial separation, and the heavier dust spirals down along the inner wall of the conical cylinder (3); the inner wall of the conical cylinder (3) is provided with a secondary blocking mechanism (9) for secondary blocking of dust in the gas. The secondary blocking mechanism (9) includes: an exhaust pipe (91), which is fixedly connected to the top of the conical cylinder (3) and extends into the interior of the conical cylinder (3) for exhausting gas; and a slid groove (92), which is opened on the inner wall of the exhaust pipe (91), and a breathable plate (93) is slidably connected to the inner wall of the slid groove (92) for secondary blocking of dust in the gas.

6. The dust treatment device for wood crushing equipment according to claim 5, characterized in that: The secondary blocking mechanism (9) further includes: a second spring (94), which is disposed on the inner wall of the slide groove (92) for supporting the vent plate (93) upward; and a pushing component, which is disposed on the inner wall of the exhaust pipe (91) for actuating the vent plate (93).

7. A dust treatment device for wood crushing equipment according to claim 6, characterized in that: The pushing assembly includes: two sets of cross-shaped fixing rods (98), which are fixedly connected at equal intervals to the inner wall of the exhaust pipe (91); a rotating rod (910), which is rotatably connected to the axis of the two sets of cross-shaped fixing rods (98), and a turbine (99) is fixedly sleeved on the outer wall of the rotating rod (910), which drives the turbine (99) to rotate following the exhaust airflow; a push rod (95), which is fixedly connected to the top of the vent plate (93), and a plurality of circumferentially arranged contact grooves (96) are opened on the top of the push rod (95); an L-shaped push rod (97) is fixedly connected to the lower part of the outer wall of the rotating rod (910), and the other end of the L-shaped push rod (97) is attached to the push rod (95) and the contact groove (96).

8. The dust treatment device for wood crushing equipment according to claim 7, characterized in that: There are two L-shaped push rods (97), which are symmetrically arranged on both sides of the outer wall of the rotating rod (910) to abut against the push rod (95) to move; the front of the separation box (1) is equipped with a hatch (10) for closing the cylindrical cavity.

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