An artificial density board hot grinding steam recovery device and method

Abstract

The present invention relates to a steam recovery device and method for artificial density board hot grinding, and relates to the technical field of steam recovery; the present invention can solve the following problems existing in the prior art during the steam recovery process: First, by setting a reciprocating screw and an adjusting block, by adjusting the upward movement distance of the adjusting block, the steam inhalation amount is controlled, the steam recovery amount is effectively controlled, the hot grinding effect is ensured to be stable, and the working efficiency of the equipment is improved. Second, by setting a cooling chamber, a control chamber and a flow chamber, the water body inside each chamber is utilized to flow to cool the cooling plate inside the adjusting block, ensuring that the cooling plate can always condense the steam between the two cooling plates. Finally, by setting a feed pipe and a filter plate in the feed pipe, the impurities in the steam are filtered through the filter plate, the purity of the steam is improved, the pollution and blockage of subsequent equipment are reduced, and the service life of the equipment is extended.

Description

Technical Field

[0001] The present invention relates to the technical field of steam recovery, and particularly relates to an artificial density board hot grinding steam recovery device and method. Background Art

[0002] Artificial density board hot grinding steam recovery refers to the process of recovering and reusing the steam generated during the hot grinding process through specific devices and processes during the processing of artificial boards.

[0003] During the production of artificial boards (such as medium density fiberboards), wood chips need to be ground in a hot grinder to form fibers. In order to soften the wood chips and facilitate grinding, steam is usually used to heat-treat the wood chips.

[0004] During the hot grinding process, after the wood chips are ground into fibers, the fibers will contain a large amount of steam. If these steams are not separated and recovered in time, it will have an adverse impact on the subsequent processing process, affecting the drying and shaping of the fibers.

[0005] For example, the Chinese patent with the publication number CN218723262U discloses a steam recovery device for pulp grinding heat energy, belonging to the technical field of steam recovery. The refrigeration plate provided can directly collide and cool with the steam, and through the staggered distribution of the diversion holes, the collision effect between the steam and the refrigeration plate can be increased, thereby greatly improving the condensation efficiency of the steam, and then improving the steam recovery efficiency. And through the heat energy power generation module and the storage battery provided, the steam heat energy can be utilized to provide electric energy for the refrigeration plate, greatly reducing the steam recovery cost.

[0006] However, there are still some deficiencies in the above device during actual use:

[0007] 1. The above device can directly collide and cool with the steam through the provided refrigeration plate, and through the staggered distribution of the diversion holes, the collision effect between the steam and the refrigeration plate can be increased, thereby greatly improving the condensation efficiency of the steam and then improving the steam recovery efficiency. However, the above device cannot adjust the volume of the recovered steam, which will result in more or less steam recovery. The fluctuation of the steam recovery volume will cause fluctuations in the pulp concentration and temperature during the pulp grinding process, affecting the consistency of the pulp grinding effect.

[0008] 2. During the production of artificial boards, the hot grinding process is a key link, mainly used to grind the wood into fibers. However, a large amount of debris and dust will be generated during this process, and they will enter the recovery device along with the steam. Since the device lacks a debris filtering structure, it is easy to cause blockage of the diversion pipe or diversion holes, thereby affecting the steam flow and reducing the condensation efficiency.

[0009] Therefore, based on the above viewpoints, it is crucial to improve and perfect the steam recovery device for pulping heat energy. This can not only adjust the steam recovery volume, enhance the recovery efficiency, ensure the stability of the pulping effect, but also effectively filter the debris in the steam, thereby improving the condensation efficiency. Summary of the Invention

[0010] To solve the above problems, the present invention provides a steam recovery device and method for hot grinding of artificial density boards.

[0011] On the one hand, a steam recovery device for hot grinding of artificial density boards includes a recovery tank. A collection pipe communicated with the bottom of the recovery tank is provided. A reciprocating screw is rotatably arranged inside the recovery tank. An adjusting block is arranged on the reciprocating screw in a threaded manner. A cooling chamber is opened inside the adjusting block. Cooling plates penetrating the adjusting block at the bottom are equidistantly arranged inside the cooling chamber.

[0012] A condensing member for condensing the steam inside the adjusting block is arranged inside the recovery tank. The condensing member includes a partition plate. A control chamber and a flow chamber are arranged inside the upper end of the recovery tank through a T-shaped partition plate.

[0013] Preferably, a linkage member for driving the water flow inside the adjusting block to flow inside the control chamber and the flow chamber is arranged inside the recovery tank. The linkage member includes a control pipe. The control pipe is arranged at one end of the adjusting block in the length direction. The control pipe is respectively communicated with the cooling chamber and the control chamber. The control pipe penetrates the partition plate and extends into the control chamber. A push plate is arranged at one end of the control pipe inside the control chamber. A connecting pipe communicated with the flow chamber and the cooling chamber respectively is arranged at the other end of the adjusting block. The connecting pipe is of a telescopic structure.

[0014] Preferably, the cooling plates are in a reciprocating bending shape inside the adjusting block, and the bending parts are all inclined to the inner wall of the cooling chamber.

[0015] Preferably, the part of the bottom of the cooling plate extending out of the adjusting block bends towards the side away from the reciprocating screw.

[0016] Preferably, a perfecting member for condensing and recovering the excess steam is further arranged inside the recovery tank. The perfecting member includes a rotating plate. The rotating plate is symmetrically rotatably arranged on the top of the adjusting block through a torsion spring. The adjusting block is symmetrically provided with a conveying pipe penetrating the adjusting block. The upper end of the conveying pipe is flush with the top of the adjusting block.

[0017] Preferably, a filtering mechanism for removing impurities in the recovered steam is further provided inside the recovery tank. The filtering mechanism includes a feed hopper which is arranged at the bottom of the adjusting block and sleeved outside the reciprocating screw. A feed pipe communicated with the feed hopper is arranged at the bottom of the feed hopper. The collecting pipe is communicated with the bottom of the feed pipe. Filter plates are arranged above and at the bottom of the feed pipe inside the feed pipe.

[0018] Preferably, opposite cooling plates are provided with feed ports on one side outside the adjusting block, and the feed ports are located above the bent portions of the cooling plates outside the adjusting block.

[0019] Preferably, baffle plates are symmetrically and rotatably arranged at the bottom of the recovery tank through torsion springs. Through holes corresponding to the conveying pipes are formed in the two filter plates, and turning plates are rotatably arranged in the through holes.

[0020] On the other hand, a method for recovering hot grinding steam of artificial density board is as follows:

[0021] S1. Steam collection: The steam generated during hot grinding work enters the inside of the recovery tank through the collecting pipe.

[0022] S2. Steam filtration: After the steam enters the inside of the feed pipe, the impurities in the steam are filtered by the filter plates.

[0023] S3. Quantity control: By moving the adjusting block up and down inside the recovery tank, the suction volume of the steam is controlled.

[0024] S4. Steam condensation: When the steam enters the inside of the adjusting block and passes through the relatively low-temperature cooling plates, it will condense into water, and then fall to the bottom of the recovery tank for collection.

[0025] S5. Water body cooling: Keep the water inside the cooling chamber at a low temperature to ensure that the cooling plates are kept at a low temperature.

[0026] S6. Steam recovery: The condensed water can flow out from the bottom of the recovery tank and then return to the hot mill for reuse.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] First, by providing the reciprocating screw and the adjusting block, by adjusting the upward movement distance of the adjusting block, the suction volume of the steam is controlled, effectively preventing the steam recovery volume from being too much or too little, ensuring the stable hot grinding effect, and improving the working efficiency of the equipment. And the design of the one-way valve prevents steam from flowing back.

[0029] II. The present invention sets up a cooling chamber, a control chamber, and a flow chamber. By utilizing the water flow inside each chamber, the cooling plate inside the adjusting block is cooled to ensure that the cooling plate can always condense the steam between the two cooling plates.

[0030] III. The present invention sets up a feed pipe and a filter plate inside the feed pipe to filter the impurities in the steam through the filter plate, improve the purity of the steam, reduce the pollution and blockage of subsequent equipment, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the drawings and embodiments.

[0032] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 is a schematic diagram of the internal structure of the recovery tank of the present invention.

[0034] Figure 3 is a schematic diagram of a movement state of the water body of the present invention.

[0035] Figure 4 is a schematic diagram of the structure of the cooling plate of the present invention.

[0036] Figure 5 is a schematic diagram of the internal structure of the feed pipe of the present invention.

[0037] Figure 6 is a schematic diagram of another movement state of the water body of the present invention.

[0038] Figure 7 is a schematic diagram of the structure of the feed pipe of the present invention.

[0039] Figure 8 is the present invention Figure 7 a schematic diagram of the structure at position A in.

[0040] In the figure, 1. Recovery tank; 10. Collection pipe; 11. Reciprocating screw; 12. Adjusting block; 13. Cooling chamber; 14. Cooling plate; 2. Condensing member; 20. Partition plate; 21. Control chamber; 22. Flow chamber; 3. Linking member; 30. Control pipe; 31. Pushing plate; 32. Connecting pipe; 33. Flow hole; 4. Completing member; 40. Rotating plate; 41. Delivery pipe; 5. Filter mechanism; 50. Feed hopper; 51. Feed pipe; 52. Filter plate; 6. Feed port; 70. Blocking partition; 71. Flipping plate; 8. Z-shaped groove; 9. Diversion hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The following is a detailed description of the embodiments of the present invention with reference to the attached Figures 1 - 8 drawings.

[0042] The embodiments of the present application disclose a steam recovery device and method for artificial density board hot grinding. It should be noted that the present invention is mainly applied in the process of steam recovery, and in terms of technical effects, it can avoid the problem that the stability of the grinding effect is affected due to the inability to adjust the steam recovery amount; further, the present invention can also solve the problem that the debris in the steam affects the condensation efficiency during steam recovery.

[0043] Embodiment 1:

[0044] Referring to Figure 1 、 Figure 2 and Figure 3 As shown, it includes a recovery tank 1. A collecting pipe 10 is provided at the bottom of the recovery tank 1 and is communicated with it. A one-way valve is arranged inside the collecting pipe 10. The steam generated during the hot grinding operation will enter the inside of the recovery tank 1 through the collecting pipe 10. Due to the setting of the one-way valve, the steam is prevented from flowing back. A reciprocating screw 11 is rotatably arranged inside the recovery tank 1. An adjusting block 12 is arranged on the reciprocating screw 11 in a threaded manner. The adjusting block 12 is driven by the reciprocating screw 11 to move up and down inside the recovery tank 1. When the adjusting block 12 moves upward, the volume inside the recovery tank 1 and below the adjusting block 12 expands accordingly, and thus the internal pressure decreases. Since the pressure inside the collecting pipe 10 is higher than that of the recovery tank 1, the steam is sucked into the recovery tank 1. By precisely controlling the upward movement distance of the adjusting block 12, the steam suction amount can be effectively controlled to ensure an appropriate steam recovery amount during the hot grinding process and avoid affecting the hot grinding effect. Since a one-way valve is arranged inside the collecting pipe 10, when the adjusting block 12 moves downward, the steam will not return to the collecting pipe 10.

[0045] A cooling chamber 13 is opened inside the adjusting block 12. The steam sucked into the inside of the recovery tank 1 will be condensed through the cooling chamber 13. The condensed water body is collected separately and can be returned to the hot grinder again to be used as the raw material for steam production again, realizing the recycling of excess steam.

[0046] Cooling plates 14 are arranged at equal intervals inside the cooling chamber 13 and penetrate through the adjusting block 12 at the bottom. Two groups of cooling plates 14 are symmetrically arranged inside the adjusting block 12. During the downward movement of the adjusting block 12, the air below the adjusting block 12 will be compressed. At this time, the pressure below the adjusting block 12 inside the recovery tank 1 is greater than the pressure inside the adjusting block 12, and the steam will be sucked into the space between the two cooling plates 14 inside the adjusting block 12. Inside the adjusting block 12, when the steam passes through the relatively low-temperature cooling plates 14, it will condense into water, and then the condensed water will slide down through the gap between the two cooling plates 14 and fall to the bottom of the recovery tank 1 below the adjusting block 12 for collection.

[0047] Referring to Figure 3As shown, it is a schematic structural diagram of the shape of the cooling plate 14; specifically, the cooling plate 14 is bent back and forth inside the adjusting block 12, and the bent parts are all inclined to the inner wall of the cooling chamber 13. The reason for driving the cooling plate 14 to be bent back and forth inside the adjusting block 12 is to increase the contact area between the steam and the cooling plate 14 inside the adjusting block 12, so as to drive the steam to exchange heat with the cooling plate 14 to a greater extent, thereby improving the heat exchange efficiency.

[0048] The inclined cooling plate 14 can facilitate the condensed water vapor to slide down along the cooling plate 14 and will not accumulate on the cooling plate 14.

[0049] The part of the bottom of the cooling plate 14 extending out of the adjusting block 12 is bent toward the side away from the reciprocating screw 11.

[0050] The water condensed inside the adjusting block 12 will flow out through the gaps between the cooling plates 14 and fall into the recovery tank 1 for collection.

[0051] Refer to Figure 3 and Figure 4 As shown, it is a schematic structural diagram for driving the cooling plate 14 to maintain a low temperature state; specifically, a condensing member 2 for driving the steam inside the adjusting block 12 to condense is provided inside the recovery tank 1. The condensing member 2 includes a partition plate 20. A control chamber 21 and a flow chamber 22 are provided above the inside of the recovery through the T-shaped partition plate 20.

[0052] Water bodies are provided inside both the control chamber 21 and the flow chamber 22, and a water body is also provided inside the cooling chamber 13. By circulating and exchanging the water inside the cooling chamber 13 with the water in the control chamber 21 and the flow chamber 22, it is ensured that the water inside the cooling chamber 13 maintains a low temperature state, thereby keeping the cooling plate 14 at a low temperature so that it can always effectively condense the steam between the two cooling plates 14.

[0053] Refer to Figure 3 As shown, it is a schematic structural diagram for controlling the flow of water; specifically, a linkage member 3 for driving the water flow inside the adjusting block 12 to flow inside the control chamber 21 and the flow chamber 22 is provided inside the recovery tank 1. The linkage member 3 includes a control pipe 30. The control pipe 30 is provided at one end in the length direction of the adjusting block 12, and the control pipe 30 is respectively communicated with the cooling chamber 13 and the control chamber 21. The partition plate 20 of the control pipe 30 extends into the control chamber 21. A push plate 31 is provided at one end of the control pipe 30 inside the control chamber 21, and a flow hole 33 communicating with the inside of the control chamber 21 is opened below the push plate 31 of the control pipe 30.

[0054] The other end of the adjusting block 12 is provided with a connecting pipe 32 respectively communicated with the flow chamber 22 and the cooling chamber 13. The connecting pipe 32 is of a telescopic structure and can be telescoped when the adjusting block 32 moves up and down.

[0055] When the adjusting block 12 moves downward, the push plate 31 drives the water flow in the control chamber 21 to flow into the cooling chamber 13 through the control pipe 30. At this time, the water with a lower temperature in the control chamber 21 is mixed with the water in the cooling chamber 13, further reducing the water temperature in the cooling chamber 13. As the water volume in the cooling chamber 13 increases, the excess water flows into the flow chamber 22 through the connecting pipe 32 and is mixed with the water in the flow chamber 22, driving the temperature of the water mixed with it to decrease.

[0056] On the contrary, when the adjusting block 12 moves upward, the push plate 31 acts as a piston to suck the water in the cooling chamber 13 into the control chamber 21. Thus, the water body inside the control chamber 21 can be mixed and exchanged with the water body inside the control chamber 21, realizing the mutual mixing and exchange of the water body in the cooling chamber 13 with the water bodies in the control chamber 21 and the flow chamber 22 by using the push plate 31, enabling the water body in the cooling chamber 13 to be cooled and improving the effect of the cooling plate 14 in condensing the steam.

[0057] Refer to Figure 3 、 Figure 4 and Figure 5 As shown in

[0058] a structural schematic diagram for collecting excess steam; specifically, a perfecting member 4 for condensing and recovering excess steam is further provided inside the recovery tank 1. When there is too much recovered steam, the condensation amount of the steam entering between the two cooling plates 14 is less than the entering amount of the steam. At this time, the steam cannot be completely condensed and recovered.

[0059] The perfecting member 4 includes a rotating plate 40. The rotating plate 40 is symmetrically rotatably arranged on the top of the adjusting block 12 through a torsion spring. The excess steam will move upward through the gap between the two cooling plates 14. When it moves to the uppermost end, the rotating plate 40 will flip under the action of the steam, and the excess steam between the cooling plates 14 will enter the space between the adjusting block 12 and the partition plate 20. The adjusting block 12 is symmetrically provided with a conveying pipe 41 passing through the adjusting block 12, and the upper end of the conveying pipe 41 is flush with the top of the adjusting block 12.

[0060] Refer to Figure 3 、 Figure 5 and Figure 7As shown, it is a schematic structural diagram of filtering the recycled steam; specifically, a filtering mechanism 5 for removing impurities in the recycled steam is further provided inside the recycling tank 1. The filtering mechanism 5 includes a feed hopper 50. The feed hopper 50 is arranged at the bottom of the adjusting block 12 and sleeved outside the reciprocating screw 11. A feed pipe 51 communicated with the feed hopper 50 is arranged at the bottom of the feed hopper 50. The collecting pipe 10 is communicated with the bottom of the feed pipe 51. Filter plates 52 are arranged above the feed pipe 51 and at the bottom of the feed pipe 51 inside the feed pipe 51. The collecting pipe 10 is located between the two filter plates 52.

[0061] The steam entering through the collecting pipe 10 will enter the feed pipe 51, and then enter between the two cooling plates 14 inside the adjusting block 12 through the feed hopper 50.

[0062] After the steam enters the inside of the feed pipe 51, the steam will gradually move upward. During the moving process, the impurities in the steam will be isolated by the filter plate 52, thereby achieving the effect of filtering the steam.

[0063] It should be noted that the bottom of the feed pipe 51 is a rigid pipe to facilitate the installation of the filter plate 52 and the fixation of the bottom of the feed pipe 51, while the upper end of the feed pipe 51 is a telescopic structure to adapt to the movement of the feed hopper 50 connected above the feed pipe 51 following the adjusting block 12.

[0064] It should be noted that the feed pipe 51 is also sleeved outside the conveying pipe 41, so that the condensed water inside the conveying pipe 41 can flow into the bottom of the recycling tank 1 through the filter plate 52 at the bottom of the feed pipe 51. In addition, since the content in the conveying pipe 41 is condensed water, the temperature of the condensed water in the conveying pipe 41 is relatively low. When the steam in the feed pipe 51 rises, part of the steam will condense on the outer wall when it contacts the conveying pipe 41, thereby reducing the pressure of subsequent steam condensation.

[0065] Refer to Figure 5 、 Figure 7 and Figure 8 As shown, it is a schematic structural diagram of the water in the cooling chamber 13 flowing into the bottom of the recycling tank 1; specifically, opposite cooling plates 14 are provided with feed ports 6 on one side outside the adjusting block 12, and the feed ports 6 are located above the bending part of the cooling plates 14 outside the adjusting block 12.

[0066] The purpose of such a setting is that after the steam enters between the two cooling plates 14 through the feed port 6 from the feed hopper 50, the steam will gradually rise inside the cooling plates 14. Since the bottom of the cooling plates 14 is in a bent state and the steam moves upward, it is difficult for the steam to enter the recycling tank 1 through the bending part of the cooling plates 14, preventing insufficient steam recovery. And the condensed water will also flow down from the cooling plates 14 synchronously. Due to the fluidity of the water and under the action of gravity, it will directly fall to the bending part of the cooling plates 14.

[0067] Referring to Figure 5 as shown, it is a schematic structural diagram for collecting the condensed moisture; specifically, the bottom of the recovery tank 1 is symmetrically and rotatably provided with a blocking partition 70 through a torsion spring, and through holes corresponding to the conveying pipe 41 are formed on both filter plates 52, and turnover plates 71 are rotatably arranged in the through holes.

[0068] When the moisture at the bottom of the recovery tank 1 accumulates to a certain amount, it drives the adjusting block 12 to descend. During the descending process, the conveying pipe 41 will push the turnover plate 71 to rotate and pass through the filter plate 52 until gradually pushing the blocking partition 70 to rotate, and then the moisture can flow out from the bottom of the recovery tank 1, and then return to the hot grinder through an external water pipe for reuse.

[0069] Embodiment 2:

[0070] On the basis of Embodiment 1, in order to further improve the condensation effect and accelerate the cooling speed of the water body; a lifting member is also proposed, which is beneficial to enhancing the flow speed of the water body, increasing the circulation rate of the water body, making the cooling speed of the water body faster and the condensation effect on the steam better.

[0071] Referring to Figure 6 as shown, it is a schematic structural diagram for improving the steam condensation effect; specifically, the lifting member includes a Z-shaped groove 8. A Z-shaped groove 8 is formed on the partition plate 20 separating the control chamber 21 and the flow chamber 22. The upper end of the Z-shaped groove 8 is communicated with the control chamber 21, and the lower end of the Z-shaped groove 8 is communicated with the flow chamber 22. A diversion hole 9 is formed on the push plate 31.

[0072] It should be noted that one-way valves are provided at the communication part of the diversion hole 9 and the flow hole 33. Thus, the water flow in the control pipe 30 can enter the control chamber 21 through the one-way valve, and then the water below the push plate 31 in the control chamber 21 can enter the space above the push plate 31 through the diversion hole 9.

[0073] When the push plate 31 ascends, it can push the moisture in the control chamber 21 to flow into the flow chamber 22 through the Z-shaped groove 8. The space below the push plate 31 in the control chamber 21 becomes larger, resulting in a decrease in pressure, and the moisture in the cooling chamber 13 can be sucked into the control chamber 21. The moisture enters the area below the push plate 31 through the flow hole 33. At this time, the moisture in the cooling chamber 13 decreases, and the moisture in the flow chamber 22 replenishes it, thus realizing the moisture circulation.

[0074] Conversely, when the push plate 31 moves downward, the push plate 31 squeezes the moisture in the lower part of the control chamber 21. The moisture will enter the space above the push plate 31 through the diversion holes 9 to supplement the moisture in the space above the push plate 31. When the push plate 31 moves upward again, the moisture is pushed into the flow chamber 22 again. In this way, a cycle is realized, improving the fluidity of the moisture in the control chamber 21, the flow chamber 22 and the cooling chamber 13, enhancing the cooling speed of the water body, and improving the cooling effect of the cooling.

[0075] During operation: In the first step, the steam generated during the hot grinding process is introduced into the recovery tank 1 through the collection pipe 10.

[0076] In the second step, after the steam enters the feed pipe 51, it gradually rises. During this period, impurities are effectively isolated by the filter plate 52, realizing steam filtration.

[0077] In the third step: The reciprocating screw 11 drives the adjusting block 12 to move up and down inside the recovery tank 1 to control the intake of steam, preventing the recovery amount of steam from being too much or too little, which affects the effect of hot grinding.

[0078] In the fourth step: During the process of the adjusting block 12 descending, the steam will enter between the two cooling plates 14 inside the adjusting block 12. Inside the adjusting block 12, when the steam passes through the relatively low-temperature cooling plate 14, it will condense into water. Subsequently, the condensed water will slide down from the cooling plate 14 and fall from below the adjusting block 12 to the bottom of the recovery tank 1 for collection.

[0079] In the fifth step: Water bodies are provided inside both the control chamber 21 and the flow chamber 22, and a water body is also provided inside the cooling chamber 13 inside the adjusting block 12. By driving the water inside the cooling chamber 13 to flow and exchange with the water inside the control chamber 21 and the flow chamber 22, the water inside the cooling chamber 13 is kept in a low-temperature state, thereby ensuring that the cooling plate 14 remains in a low-temperature state and ensuring that the cooling plate 14 can always condense the steam between the two cooling plates 14.

[0080] In the sixth step: When the moisture at the bottom of the recovery tank 1 accumulates to a certain amount, the adjusting block 12 is driven to descend. During the descending process, the delivery pipe 41 will penetrate the filter screen until the baffle 70 is gradually pushed to rotate, and the moisture can flow out from the bottom of the recovery tank 1. Then, through an external water pipe, the moisture is returned to the hot mill for reuse.

[0081] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting.

[0082] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A steam recovery device for thermal grinding of artificial density board, comprising a recovery tank (1), characterized in that: The bottom of the recovery tank (1) is provided with a collecting pipe (10) in communication therewith, a reciprocating screw (11) is rotatably arranged inside the recovery tank (1), an adjusting block (12) is threadedly arranged on the reciprocating screw (11), a cooling chamber (13) is provided inside the adjusting block (12), and cooling plates (14) are equidistantly arranged inside the cooling chamber (13) and penetrate the adjusting block (12) at the bottom; The recovery tank (1) is provided with a condensing element (2) for driving the steam inside the regulating block (12) to condense, the condensing element (2) comprising a partition (20), and the upper end of the recovery tank (1) is provided with a control chamber (21) and a flow chamber (22) via the T-shaped partition (20); The recovery tank (1) is provided with a linkage (3) for driving the water flow inside the regulating block (12) to flow inside the control chamber (21) and the flow chamber (22); the linkage (3) comprises a control pipe (30); the control pipe (30) is provided at one end of the regulating block (12) in the length direction, and the control pipe (30) is communicated with the cooling chamber (13) and the control chamber (21) respectively; the control pipe (30) penetrates the partition plate (20) and extends into the control chamber (21); a push plate (31) is provided at one end of the control pipe (30) in the control chamber (21); and a connecting pipe (32) is provided at the other end of the regulating block (12) and is communicated with the flow chamber (22) and the cooling chamber (13) respectively; the connecting pipe (32) is a telescopic structure; A feed inlet (6) is provided on one side of the two opposing cooling plates (14) located outside the regulating block (12), and the feed inlet (6) is located above the bending portion of the cooling plates (14) outside the regulating block (12).

2. The artificial density board hot grinding steam recovery device according to claim 1, characterized in that: The cooling plate (14) is in a reciprocating bending shape inside the regulating block (12), and the bending parts are all inclined to the inner wall of the cooling chamber (13).

3. The artificial density board hot grinding steam recovery device according to claim 1, characterized in that: The portion of the bottom of the cooling plate (14) that extends out of the regulating block (12) is bent toward a side away from the reciprocating screw (11).

4. The artificial density board hot grinding steam recovery device according to claim 1, characterized in that: The recovery tank (1) is also provided with a perfecting part (4) for condensing and recovering excess steam. The perfecting part (4) comprises a rotating plate (40). The rotating plate (40) is symmetrically rotated on the top of the regulating block (12) through a torsion spring. The regulating block (12) is symmetrically provided with a delivery pipe (41) passing through the regulating block (12). The upper end of the delivery pipe (41) is flush with the top of the regulating block (12).

5. The artificial density board hot grinding steam recovery device according to claim 1, characterized in that: The recovery tank (1) is also provided with a filtering mechanism (5) for removing impurities from the recovered steam. The filtering mechanism (5) comprises a feed hopper (50). The feed hopper (50) is provided at the bottom of the regulating block (12) and sleeved on the outside of the reciprocating screw (11). A feed pipe (51) communicating with the feed hopper (50) is provided at the bottom. The collecting pipe (10) is communicated with the bottom of the feed pipe (51). Filter plates (52) are provided inside the feed pipe (51) above the feed pipe (51) and at the bottom of the feed pipe (51).

6. The artificial density board hot grinding steam recovery device according to claim 5, characterized in that: A blocking plate (70) is symmetrically rotatably arranged at the bottom of the recovery tank (1) via a torsion spring, and through holes corresponding to the delivery pipe (41) are provided on the two filter plates (52), and a flip plate (71) is rotatably arranged in the through holes.

7. A method for recovering steam from a hot mill of an artificial density board, comprising a device for recovering steam from a hot mill of an artificial density board according to any one of claims 1 to 6, characterized in that: The steam recovery method of artificial density board hot mill is as follows: S1. Steam collection: The steam generated during the hot mill operation will enter the recovery tank (1) through the collection pipe (10); S2, steam filtration: after the steam enters the feed pipe (51), impurities in the steam are filtered by the filter plate (52); S3, volume control: by moving the regulating block (12) up and down inside the recovery tank (1), the amount of steam sucked in is controlled; S4, steam condensation: the steam enters the regulating block (12) and condenses into water when passing through the cooling plate (14) with a lower temperature, and then falls to the bottom of the recovery tank (1) for collection; S5, cooling the water: keeping the water in the cooling chamber (13) at a low temperature, and ensuring that the cooling plate (14) is kept at a low temperature; S6, Steam recovery: The condensed water can flow out from the bottom of the recovery tank (1) and return to the thermal mill for reuse.

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