A vacuum dryer that combines filtration, mechanical pressing and spin drying

Abstract

The utility model discloses a kind of vacuum dryers of fusion filtering, mechanical pressure material and rotary drying, belong to vacuum dryer technical field, its technical scheme main points include vacuum drying tank, the top of the vacuum drying tank is sealingly connected with end cap, the inside of the end cap and the right side of vacuum drying tank are respectively provided with feed pipe and vacuum suction pipe, the inside of the vacuum drying tank is rotatably connected with rotating shaft, and the surface of rotating shaft is welded with several stirring rods, another end of the stirring rod is welded with stirring paddle, the top of the vacuum drying tank is bolted with filter assembly, by integrating filter assembly, pressure material component and rotating shaft drying function in vacuum drying tank, material can be completed multiple processes without transfer, avoid material loss and pollution of intermediate link, greatly improve production efficiency, solve the problem of traditional vacuum dryer single function, material needs separate filtering transfer, low production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vacuum dryer technology, and in particular to a vacuum dryer that integrates filtration, mechanical pressing and rotary drying. Background Technology

[0002] A vacuum dryer is a drying device that operates under negative pressure. In vacuum conditions, the boiling point of the solvent in the material decreases, making it suitable for drying unstable or heat-sensitive materials. Vacuum dryers also have good sealing properties, making them suitable for drying materials that require solvent recovery and materials containing strong irritants or toxic gases.

[0003] Vacuum dryers are widely used in various material processing scenarios because they can dry materials at low temperatures and avoid damage to heat-sensitive components. However, existing vacuum dryers only have drying functions. Materials need to be filtered to remove liquid before being transferred to the dryer for drying. The intermediate transfer process is prone to material loss and contamination, and is time-consuming, labor-intensive, and has low production efficiency.

[0004] To address this, a vacuum dryer integrating filtration, mechanical pressing, and rotary drying is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum dryer that integrates filtration, mechanical pressing, and rotary drying. This solves the problem that existing vacuum dryers only have drying functions, and materials need to be filtered first to remove liquid before being transferred to the dryer for drying. The intermediate transfer process is prone to material loss and contamination, and is time-consuming, labor-intensive, and has low production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vacuum dryer integrating filtration, mechanical pressing, and rotary drying, comprising a vacuum drying tank, the top of which is sealed with an end cap, the inside of which and the right side of which are respectively provided with a feed pipe and a vacuum suction pipe, the inside of which is rotatably connected with a rotating shaft, and a plurality of stirring rods are welded to the surface of which are welded with stirring blades at the other end of which are stirred, and a filter assembly is bolted to the top of which is a pressing assembly.

[0007] The filter assembly includes a filter frame, the inside of which is lined with filter cloth. A clamping frame is bolted to the inner wall of the filter frame. An installation groove is provided on the edge of the inner wall of the filter frame. An integral clamping block is welded to the bottom of the clamping frame. The edge of the filter cloth and the clamping block are both inside the installation groove, and the bottom end of the clamping block is in close contact with the surface of the filter cloth.

[0008] Preferably, the pressing assembly includes a first hydraulic cylinder, a movable plate, and a pressing plate. The first hydraulic cylinder is bolted to the top of the end cap, the movable plate and the pressing plate are located at the top of the filter assembly, and the pressing plate is located at the bottom of the movable plate.

[0009] Preferably, the output end of the first hydraulic cylinder passes through the end cover and is bolted to the movable plate. The top of the pressure plate is annularly welded with several guide rods, and the top of the guide rods passes through the movable plate and is slidably connected to it.

[0010] Preferably, a spring is sleeved on the surface of the guide rod, and the two ends of the spring are respectively bolted to the pressure plate and the moving plate.

[0011] Preferably, both the moving plate and the pressure plate are provided with annular sealing skirts at their edges, and the sealing skirts are fitted with the inner wall of the filter frame with a clearance.

[0012] Preferably, the cross-section of the annular sealing skirt is trapezoidal.

[0013] Preferably, the connection between the rotating shaft and the vacuum drying tank, as well as the connection between the end cover and the hydraulic cylinder, are all connected by mechanical seals.

[0014] Preferably, longitudinal heat pipes are bolted to both sides of the inner wall of the vacuum drying tank, and a transverse heat pipe is fixedly connected between two longitudinal heat pipes. A connecting ring is fixedly connected between two adjacent transverse heat pipes on both sides, and several connecting rings pass through the top of the rotating shaft in sequence and are rotatably connected to it.

[0015] Preferably, the top of the left side of the left longitudinal heat pipe is fixedly connected to a heat source inlet, and the bottom of the right side of the right longitudinal heat pipe is fixedly connected to a heat source outlet.

[0016] Preferably, a support ring is welded to the surface of the vacuum drying tank, and a second hydraulic cylinder is bolted to both sides of the top of the support ring, with the top of the second hydraulic cylinder bolted to the end cover.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application integrates the filtration component, pressing component and rotary shaft drying function into the vacuum drying tank, so that the material can complete multiple processes without transfer, avoiding material loss and contamination in the intermediate links, greatly improving production efficiency, and solving the problems of traditional vacuum dryers with single function, material needing to be filtered and transferred separately, and low production efficiency.

[0019] 2. By setting up a filtration component and a pressing component, this application can achieve efficient filtration and deep dehydration of raw materials, and make the filter cake after pressing have low and uniform moisture content, thus avoiding waste of raw materials. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the vacuum dryer that integrates filtration, mechanical pressing, and rotary drying according to this utility model.

[0021] Figure 2 This is a cross-sectional schematic diagram of the vacuum drying tank of this utility model;

[0022] Figure 3 This is a partial structural diagram of the filter assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the material pressing assembly of this utility model;

[0024] Figure 5 This is a schematic diagram showing the connection between the rotating shaft and the vacuum drying tank of this utility model.

[0025] In the diagram, 1. Vacuum drying tank; 2. End cap; 3. Vacuum suction pipe; 4. Feed pipe; 5. Rotating shaft; 6. Stirring rod; 7. Stirring blade; 8. Filter assembly; 81. Filter frame; 82. Filter cloth; 83. Pressing frame; 84. Pressing block; 9. Pressing assembly; 91. First hydraulic cylinder; 92. Moving plate; 93. Pressing plate; 94. Guide rod; 95. Spring; 10. Annular sealing skirt; 11. Longitudinal heat pipe; 12. Transverse heat pipe; 13. Connecting ring; 14. Support ring; 15. Second hydraulic cylinder. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A vacuum dryer integrating filtration, mechanical pressing and rotary drying includes a vacuum drying tank 1. The top of the vacuum drying tank 1 is sealed with an end cap 2. The inside of the end cap 2 and the right side of the vacuum drying tank 1 are respectively provided with a feed pipe 4 and a vacuum suction pipe 3. The inside of the vacuum drying tank 1 is rotatably connected with a rotating shaft 5, and a plurality of stirring rods 6 are welded to the surface of the rotating shaft 5. The other end of the stirring rods 6 is welded with stirring blades 7. A filter assembly is bolted to the top of the vacuum drying tank 1, and a pressing assembly 9 is provided on the top of the filter assembly 8.

[0029] The filter assembly 8 includes a filter frame 81, a filter cloth 82 is laid inside the filter frame 81, a clamping frame 83 is bolted to the inner wall of the filter frame 81, an installation groove is provided on the edge of the inner wall of the filter frame 81, and an integral clamping block 84 is welded to the bottom of the clamping frame 83. The edge of the filter cloth 82 and the clamping block 84 are both inside the installation groove, and the bottom end of the clamping block 84 is in close contact with the surface of the filter cloth 82.

[0030] In this embodiment: by setting up the filter assembly 8, the filter cloth 82 is laid inside the filter frame 81, so that the edge of the filter cloth 82 is embedded in the mounting groove of the inner wall of the filter frame 81. Then, the clamping frame 83 is bolted to the filter frame 81, which drives the integrally formed clamping block 84 to be embedded in the mounting groove and in close contact with the surface of the filter cloth 82, thereby fixing the filter cloth 82. The material is put into the vacuum drying tank 1 through the feed pipe 4 and will fall on the filter cloth 82 of the filter assembly 8. The material is filtered through the filter cloth 82. In addition, with the hydraulic pressure pressing of the pressing assembly 9, the liquid content of the filter cake residue can be pressed out, thereby avoiding the waste of raw materials. After filtration and pressing, the liquid material is driven by the rotating shaft 5 to drive the stirring rod 6 and stirring blade 7 and with the help of the heating system, so as to achieve uniform drying of the material.

[0031] Specifically, such as Figure 4 As shown, the pressing assembly 9 includes a first hydraulic cylinder 91, a moving plate 92 and a pressing plate 93. The first hydraulic cylinder 91 is bolted to the top of the end cover 2. The moving plate 92 and the pressing plate 93 are located at the top of the filter assembly 8, and the pressing plate 93 is located at the bottom of the moving plate 92.

[0032] Specifically, such as Figure 4 As shown, the output end of the first hydraulic cylinder 91 passes through the end cover 2 and is bolted to the moving plate 92. Several guide rods 94 are annularly welded to the top of the pressure plate 93, and the top of the guide rods 94 passes through the moving plate 92 and is slidably connected to it.

[0033] Specifically, such as Figure 4 As shown, a spring 95 is sleeved on the surface of the guide rod 94, and the two ends of the spring 95 are respectively bolted to the pressure plate 93 and the moving plate 92.

[0034] In this embodiment: by setting up the pressing assembly 9, after the material has completed the initial filtration, the first hydraulic cylinder 91 is activated, and its output end pushes the moving plate 92 to move downward, which in turn drives the pressing plate 93 to descend synchronously. After the pressing plate 93 contacts the material, the guide rod 94 restricts the lateral displacement of the pressing plate 93, and at the same time, the spring 95 is compressed to generate elastic force, which is transmitted to the material through the pressing plate 93. The elastic force gradually increases with the compression of the spring 95, realizing flexible adjustment of the pressing force and avoiding excessive instantaneous pressure that could cause material agglomeration or component damage. During the pressing process, the spring 95 absorbs the unevenness and impact of the material, so that the pressing plate 93 is always in contact with the surface of the material, ensuring that all areas are subjected to effective pressure, so that the pressure is evenly applied to the surface of the material, thereby improving the dehydration effect.

[0035] Specifically, such as Figure 4 As shown, both the moving plate 92 and the pressure plate 93 are provided with annular sealing skirts 10, and the sealing skirts are fitted with the inner wall of the filter frame 81 with a clearance.

[0036] Specifically, such as Figure 4 As shown, the cross-section of the annular sealing skirt 10 is trapezoidal.

[0037] In this embodiment, the annular sealing skirt 10 with a trapezoidal cross-section enhances the sealing between the pressing assembly 9 and the filter frame 81, preventing some material from being squeezed out between them during the pressing process, thereby ensuring the pressing effect of the pressing assembly 9.

[0038] Specifically, such as Figure 2 , Figure 5 As shown, the connection between the rotating shaft 5 and the vacuum drying tank 1, as well as the connection between the end cover 2 and the hydraulic cylinder, are all connected by mechanical seals.

[0039] In this embodiment: by installing a mechanical seal at the connection between the rotating shaft 5 and the vacuum drying tank 1, the seal is ensured to fit tightly against the surface of the rotating shaft 5 and the side wall of the tank. A mechanical seal is also installed at the penetration point between the end cover 2 and the output end of the hydraulic cylinder. The seal is adapted to the gap between the two, which greatly improves the overall sealing performance of the equipment and ensures the stability of the vacuum inside the tank.

[0040] Specifically, such as Figure 4 As shown, longitudinal heat pipes 11 are bolted to both sides of the inner wall of the vacuum drying tank 1. A transverse heat pipe 12 is fixedly connected between two longitudinal heat pipes 11. A connecting ring 13 is fixedly connected between two adjacent transverse heat pipes 12 on both sides. Several connecting rings 13 pass through the top of the rotating shaft 5 in sequence and are rotatably connected to it.

[0041] Specifically, such as Figure 4 As shown, the top of the left side of the left longitudinal heat pipe 11 is fixedly connected to a heat source inlet, and the bottom of the right side of the right longitudinal heat pipe 11 is fixedly connected to a heat source outlet.

[0042] In this embodiment, the mesh heating structure composed of longitudinal heat pipe 11, transverse heat pipe 12 and connecting ring 13 achieves uniform heating inside the tank, solves the problem of local overheating in traditional heating methods, improves drying uniformity, and the setting of connecting ring 13 not only enhances the stability of the heat pipe structure, but also provides additional support for the rotating shaft 5, ensuring that the rotating shaft 5 rotates smoothly.

[0043] Specifically, such as Figure 1 As shown, a support ring 14 is welded to the surface of the vacuum drying tank 1, and a second hydraulic cylinder 15 is bolted to both sides of the top of the support ring 14. The top of the second hydraulic cylinder 15 is bolted to the end cover 2.

[0044] In this embodiment, the automatic lifting and lowering of the end cover 2 is achieved through the cooperation of the second hydraulic cylinder 15 and the support ring 14, which facilitates the maintenance of the equipment.

[0045] Working principle: During material drying, the second hydraulic cylinder 15 drives the end cover 2 to rise, laying the filter cloth 82 inside the filter frame 81, with its edges embedded in the mounting groove. Then, the clamping frame 83 is bolted to the filter frame 81, and the filter cloth 82 is fixed by the clamping block 84. Subsequently, the end cover 2 is lowered and sealed to the vacuum drying tank 1. Material is fed into the tank through the feed pipe 4, and the material falls onto the filter cloth 82 of the filter assembly 8 for preliminary filtration. Then, the first hydraulic cylinder 91 is activated, pushing the moving plate 92 and the pressing plate 93 to descend. The guide rod 94 ensures the smooth movement of the pressing plate 93, and the spring 95 is compressed to generate elastic force, achieving flexible pressing and squeezing out the residual liquid in the material. The filtrate falls to the bottom of the tank through the holes inside the filter frame 81. After completing the filtration and pressing operations, the valve is closed. The feed pipe 4 is connected to the vacuum system via the vacuum suction pipe 3 to create a vacuum environment by drawing air from the tank. A mechanical seal ensures the sealing of all connections. Then, heat from an external heat source system is introduced through the heat source inlet. The heat source forms a uniform heating system through the longitudinal heat pipe 11, the transverse heat pipe 12, and the connecting ring 13. At the same time, the drive motor is started to rotate the rotating shaft 5, which in turn rotates the stirring rod 6 and the stirring blades 7, ensuring that the material is in full contact with the heat pipes. The material is dried uniformly under the combined action of vacuum, heating, and stirring. The temperature sensor inside the tank monitors the temperature inside the tank in real time and adjusts the heat source supply accordingly. After drying, the heat source and rotating shaft 5 are turned off. Once the pressure inside the tank returns to normal, the dried material is discharged from the discharge port at the bottom of the tank. The end cover 2 is then raised, and the filter cloth 82 is removed to clean and maintain the entire equipment, completing the entire drying process.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum dryer integrating filtration, mechanical pressing, and rotary drying, comprising a vacuum drying tank (1), characterized in that: The top of the vacuum drying tank (1) is sealed with an end cap (2). The inside of the end cap (2) and the right side of the vacuum drying tank (1) are respectively provided with a feed pipe (4) and a vacuum suction pipe (3). The inside of the vacuum drying tank (1) is rotatably connected with a rotating shaft (5), and several stirring rods (6) are welded to the surface of the rotating shaft (5). The other end of the stirring rod (6) is welded with a stirring blade (7). The top of the vacuum drying tank (1) is bolted with a filter assembly, and a pressing assembly (9) is provided on the top of the filter assembly (8). The filter assembly (8) includes a filter frame (81), the inside of which is lined with filter cloth (82). A clamping frame (83) is bolted to the inner wall of the filter frame (81). An installation groove is provided on the edge of the inner wall of the filter frame (81). An integral clamping block (84) is welded to the bottom of the clamping frame (83). The edge of the filter cloth (82) and the clamping block (84) are both inside the installation groove, and the bottom end of the clamping block (84) is in close contact with the surface of the filter cloth (82).

2. The vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 1, characterized in that: The pressing assembly (9) includes a first hydraulic cylinder (91), a moving plate (92) and a pressing plate (93). The first hydraulic cylinder (91) is bolted to the top of the end cap (2). The moving plate (92) and the pressing plate (93) are located at the top of the filter assembly (8), and the pressing plate (93) is located at the bottom of the moving plate (92).

3. The vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 2, characterized in that: The output end of the first hydraulic cylinder (91) passes through the end cover (2) and is bolted to the moving plate (92). The top of the pressure plate (93) is annularly welded with several guide rods (94), and the top of the guide rods (94) passes through the moving plate (92) and is slidably connected to it.

4. A vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 3, characterized in that: A spring (95) is sleeved on the surface of the guide rod (94), and the two ends of the spring (95) are respectively bolted to the pressure plate (93) and the moving plate (92).

5. A vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 2, characterized in that: The edges of the movable plate (92) and the pressure plate (93) are provided with annular sealing skirts (10), and the sealing skirts are fitted with the inner wall of the filter frame (81) with a clearance.

6. A vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 5, characterized in that: The cross-section of the annular sealing skirt (10) is trapezoidal.

7. A vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 1, characterized in that: The connection between the rotating shaft (5) and the vacuum drying tank (1) and the connection between the end cover (2) and the hydraulic cylinder are all connected by mechanical seals.

8. A vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 1, characterized in that: Both sides of the inner wall of the vacuum drying tank (1) are bolted with longitudinal heat pipes (11), and a transverse heat pipe (12) is fixedly connected between the two longitudinal heat pipes (11). A connecting ring (13) is fixedly connected between two adjacent transverse heat pipes (12) on both sides. Several connecting rings (13) pass through the top of the rotating shaft (5) in sequence and are rotatably connected to it.

9. A vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 8, characterized in that: The top of the left longitudinal heat pipe (11) is fixedly connected to a heat source inlet, and the bottom of the right longitudinal heat pipe (11) is fixedly connected to a heat source outlet.

10. A vacuum dryer integrating filtration, mechanical pressing, and rotary drying according to claim 1, characterized in that: The surface of the vacuum drying tank (1) is welded with a support ring (14), and a second hydraulic cylinder (15) is bolted to both sides of the top of the support ring (14). The top of the second hydraulic cylinder (15) is bolted to the end cover (2).

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