Water vapor collecting device of paper pulp hot press

Abstract

The utility model discloses a water vapor collecting device of a paper pulp hot press, which comprises a rack and a hot pressing driving rod penetrating through the top of the rack, and the driving rod is axially and slidably connected with a collecting cover provided with a rhombic four-bar mechanism. The middle section of the rhombic four-bar linkage is provided with a pneumatic rod, the top of the rhombic four-bar linkage is hinged to the top wall of the hot press, and the bottom of the rhombic four-bar linkage is fixed to the collecting cover. The pneumatic rod is in linkage with the industrial control board through the reversing valve to control the collecting cover to ascend and descend along with the hot-pressing driving rod, the pneumatic rod shrinks to enable the collecting cover to move upwards to facilitate feeding during hot-pressing ascending, and the collecting cover is attached to a working area and sucks water vapor through the vacuum pump during downward pressing. A threaded rod and a sleeve in the four-connecting-rod mechanism are matched with a rotating connector to achieve length adjustment, a ball and spring pre-pressing structure is arranged between a sliding sleeve and a step rod to ensure sealing performance, and a water collecting groove and a drainage groove are formed in a collecting cover to strengthen the condensation effect.

Description

Technical Field

[0001] This utility model relates to the field of pulp hot press technology, and specifically to a water vapor collection device for a pulp hot press. Background Technology

[0002] Packaging boxes for products such as alcoholic beverages, flashlights, computers, and home appliances typically include cardboard boxes for support and cushioning. During manufacturing, a pulp hot press is used to heat and press wet pulp blanks under high temperature and pressure to form a cardboard box with a specific shape and structure. However, during operation, the hot press head presses the wet pulp blanks against the mold. While high-temperature heating helps to better shape the pulp blanks, the large amount of high-temperature water vapor generated between the hot press head and the mold poses a safety hazard to operators continuously feeding materials. To address this issue, existing solutions, such as the utility model patent CN203358002U, involve installing a gas collection hood above the pulp hot press through the factory's main flue network to extract the high-temperature water vapor. However, this technical solution cannot prevent the high-temperature water vapor from escaping from the hot press head, resulting in low collection efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a moisture collection device for a pulp hot press, which can efficiently collect high-temperature moisture from the hot press head of the hot press.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A moisture collection device for a pulp hot press includes a frame. A hot press drive rod is installed through the top surface of the frame. A collection cover is slidably mounted on the hot press drive rod. The collection cover is equipped with a rhomboid four-bar linkage, which includes upper and lower connecting rods from top to bottom. The ends of the two upper connecting rods and the two lower connecting rods are hinged. The top of the upper connecting rod is mounted on the inner top surface of the hot press via a hinge seat. The bottom of the lower connecting rod is mounted on the collection cover via a hinge seat. A pneumatic rod is installed in the middle section of the upper and lower connecting rods. The collection cover is connected through to a suction device. The pneumatic rod is electrically connected to an industrial control board via a reversing valve.

[0006] Furthermore, the two upper connecting rods and / or the two lower connecting rods include threaded rods, and a sleeve is provided outside the threaded rod. The sleeve is provided with internal threads, and a rotary joint is provided between the threaded rod and the sleeve and the hinge point of the upper connecting rod and / or the lower connecting rod.

[0007] Furthermore, a locking hole is provided through the surface of the sleeve, and a locking bolt is provided in the locking hole, with the end of the locking bolt abutting against the threaded rod.

[0008] Furthermore, the hot-pressing drive rod is provided with a stepped rod, the collecting cover is provided with a sliding sleeve, the sliding sleeve is sleeved on the stepped rod, and the sliding sleeve is embedded with balls adapted to the stepped rod.

[0009] Furthermore, a spring is provided between the top surface of the sliding sleeve and the stepped rod, with the two ends of the spring abutting against the transition surfaces of the sliding sleeve and the stepped rod, respectively.

[0010] Furthermore, the stepped rod extends downward in a circumferential direction and has an annular outer wall, while the sliding sleeve extends upward and has an annular inner wall. A connecting cavity is formed between the annular outer wall and the annular inner wall, and the spring is disposed within the connecting cavity.

[0011] Furthermore, the bottom of the collection hood is provided with an inwardly turned-in water collection trough, and the suction device passes through the air collection hood and communicates with the water collection trough.

[0012] Furthermore, the inner surface of the collection hood is evenly distributed with vertically arranged drainage grooves.

[0013] Furthermore, a quick-release flange is provided between the sliding sleeve and the collecting cover, the quick-release flange is provided with a threaded hole, and a sprue bolt is provided in the threaded hole.

[0014] Furthermore, the suction device includes a vacuum pump.

[0015] The advantages and beneficial effects of this utility model are as follows:

[0016] The collection hood is precisely moved by a pneumatically driven diamond four-bar linkage. When the hot press drive rod is raised, the industrial control board controls the pneumatic rod to retract, causing the diamond four-bar linkage to pull the collection hood upward, facilitating material loading into the hot press. When the hot press drive rod is pressed down, the collection hood is pressed down with the pneumatic rod to fit into the hot press working area. The suction device continuously transfers the high-temperature water vapor inside the collection hood, thereby avoiding the risk of burns from high-temperature steam.

[0017] The diamond four-bar linkage is connected by a threaded rod and a sleeve, and the end is equipped with a rotary joint, which allows the length of the diamond four-bar linkage to be adjusted to accommodate hot-pressing drive rods with different strokes and to adjust the horizontal inclination of the collection hood.

[0018] The hot-pressing drive rod is connected to the collection hood via a stepped rod, a sliding sleeve, and balls. The relative sliding between the two is smooth and reliable. A spring is installed between the sliding sleeve and the stepped rod, so that the collection hood has a pre-compression force when it is fastened and hot-pressed, thereby preventing steam from escaping. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2This is a schematic diagram of the connecting rod of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the stepped rod of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the collection cover of this utility model;

[0023] In the picture:

[0024] Frame 1, Hot-press drive rod 2, Step rod 21, Sliding sleeve 22, Ball bearing 23, Spring 24, Annular outer wall 25, Annular inner wall 26, Connecting cavity 27, Quick-release flange 28, Collection cover 3, Water collection tank 31, Drainage channel 32, Diamond four-bar linkage 4, Upper linkage 41, Lower linkage 42, Hinge seat 43, Pneumatic rod 44, Threaded rod 45, Sleeve 46, Rotary joint 47, Locking hole 48, Locking bolt 49, Suction device 5. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0026] Example 1

[0027] This embodiment provides a water vapor collection device for a pulp hot press, including a frame 1, with a hot press drive rod 2 installed through the top of the frame 1. The hot press drive rod 2 adopts a stepped rod 21 structure, and a collection cover 3 is slidably fitted on its outer surface. The collection cover 3 is connected to the stepped rod 21 through a sliding sleeve 22. Multiple sets of ball bearings 23 are embedded in the sliding sleeve 22, and the ball bearings 23 roll in contact with the surface of the stepped rod 21 to achieve axial sliding of the collection cover 3. A spring 24 is provided between the top of the sliding sleeve 22 and the transition surface of the stepped rod 21. The spring 24 is placed in the connecting cavity 27 formed by the annular outer wall 25 of the stepped rod 21 and the annular inner wall 26 of the sliding sleeve 22. The spring 24 is used to buffer the vibration of the collection cover 3 and provide a pre-tightening force between the collection cover 3 and the frame during operation to ensure more thorough steam extraction and reduce leakage.

[0028] The top of the collection cover 3 is connected to a diamond-shaped four-bar linkage 4, which consists of an upper linkage 41 and a lower linkage 42 hinged together to form a diamond-shaped frame. The top of the upper linkage 41 is fixed to the top plate of the hot press via a hinge seat 43, and the bottom of the lower linkage 42 is connected to the collection cover 3 via the hinge seat 43. A pneumatic rod 44 is vertically installed in the middle section of the four-bar linkage. The pneumatic rod 44 is electrically connected to the industrial control board via a reversing valve, which can drive the four-bar linkage to unfold or fold, thereby adjusting the height of the collection cover 3. The bottom of the collection cover 3 is provided with an inwardly folded water collection tank 31, which is connected to a suction device 5 consisting of a vacuum pump via a pipe. Vertical drainage grooves 32 are evenly distributed on the inner wall of the collection cover 3 to guide condensate into the water collection tank 31.

[0029] Example 2

[0030] This embodiment is a further optimization based on Embodiment 1. The upper connecting rod 41 of the rhomboid four-bar linkage 4 adopts an adjustable structure, including a threaded rod 45 and a sleeve 46. The sleeve 46 is connected to the hinge point through a rotary joint 47. Rotating the sleeve 46 can adjust the length of the upper connecting rod 41 to adapt to different hot pressing strokes. A locking hole 48 is opened on the surface of the sleeve 46. After inserting the locking bolt 49, it is pressed against the threaded rod 45 to lock the length of the connecting rod. In addition, the sliding sleeve 22 and the collecting cover 3 are connected by a quick-release flange 28, which is fixed with a coin head bolt for easy disassembly and maintenance.

[0031] This embodiment significantly improves the adaptability and ease of maintenance of the device through an adjustable four-bar linkage and quick-release structure, making it particularly suitable for the production of multi-specification hot-pressed pulp products.

[0032] The working principle of this invention is as follows: when the hot-pressing drive rod 2 is pressed down, the collecting cover 3 descends accordingly to cover the hot-pressing area, and the pneumatic rod 44 retracts synchronously to fold the four-bar linkage, ensuring that the collecting cover 3 fits tightly against the hot-pressing surface. The suction device 5 is activated, drawing steam into the collecting cover 3. The steam condenses along the diversion channel 32 and flows into the water collection tank 31 before being discharged. During operation, the four-bar linkage drives the collecting cover 3 to rise and fall synchronously with the hot-pressing drive rod 2, and the suction device 5 continuously draws in water vapor during the hot-pressing process. The pneumatic rod 44 dynamically adjusts the clamping force of the collecting cover 3 according to the industrial control command to ensure sealing. Condensate is collected through the diversion channel 32 and discharged into the water collection tank 31, effectively preventing water droplets from seeping back onto the pulp surface. The coordinated design of the stepped rod 21 and the spring 24 further reduces the impact of mechanical vibration on the collection effect.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pulp hot press water vapor collecting device comprising a frame (1), characterized in that: The rack (1) top surface is provided with a hot pressing driving rod (2), the hot pressing driving rod (2) is provided with a collecting cover (3) in the axial sliding, the collecting cover (3) is provided with a rhombic four-bar linkage (4), the rhombic four-bar linkage (4) includes upper connecting rods (41) and lower connecting rods (42) from top to bottom, both ends of two upper connecting rods (41) and two lower connecting rods (42) are hingedly arranged, the upper connecting rod (41) top is arranged on the hot pressing machine inner side top surface through the hinge seat (43), the lower connecting rod (42) bottom is arranged on the collecting cover (3) through the hinge seat (43), the upper connecting rod (41) and the lower connecting rod (42) middle segment are provided with pneumatic rods (44), the collecting cover (3) is communicated to the suction device (5), the pneumatic rod (44) is electrically connected with the industrial control board through the reversing valve.

2. The pulp press water vapor collection apparatus of claim 1, wherein: Two upper connecting rods (41) and / or two lower connecting rods (42) include threaded rods (45), the threaded rods (45) are provided with sleeves (46) outside, the sleeves (46) are provided with internal threads, the threaded rods (45) and the sleeves (46) are provided with rotary joints (47) between the hinge points of the upper connecting rods (41) and / or the lower connecting rods (42).

3. A pulp press water vapor collection apparatus as defined in claim 2, wherein: The surface of the sleeve (46) is provided with a locking hole (48), the locking hole (48) is provided with a locking bolt (49), and the end of the locking bolt (49) abuts against the threaded rod (45).

4. The pulp press water vapor collection apparatus of claim 1, wherein: The hot pressing driving rod (2) is provided with a stepped rod (21), the collecting cover (3) is provided with a sliding sleeve (22), the sliding sleeve (22) is sleeved on the stepped rod (21), and the sliding sleeve (22) is embedded with a ball (23) matched with the stepped rod (21).

5. The pulp press water vapor collection apparatus of claim 4, wherein: The top surface of the sliding sleeve (22) and the stepped rod (21) are provided with a spring (24), and the two ends of the spring (24) abut against the transition surfaces of the sliding sleeve (22) and the stepped rod (21) respectively.

6. The pulp press water vapor collection apparatus of claim 5, wherein: The stepped rod (21) is provided with an annular outer wall (25) extending downward in the circumferential direction, the sliding sleeve (22) is provided with an annular inner wall (26) extending upward, and the annular outer wall (25) and the annular inner wall (26) form a connecting cavity (27).

7. The pulp press water vapor collection apparatus of claim 1, wherein: The bottom surface of the collecting cover (3) is inwardly flanged to form a water collecting groove (31), and the suction device (5) communicates with the water collecting groove (31) through the collecting cover (3).

8. The pulp press water vapor collection apparatus of claim 7, wherein: The inner surface of the collecting cover (3) is uniformly provided with vertical drainage grooves (32).

9. The pulp press water vapor collection apparatus of claim 4, wherein: The sliding sleeve (22) and the collecting cover (3) are provided with a quick release flange (28), the quick release flange (28) is provided with a threaded hole, and a gold nugget head bolt is arranged in the threaded hole.

10. The pulp press water vapor collection apparatus of claim 1, wherein: The suction device (5) comprises a vacuum pump.

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