Dehydration device for papermaking felt

Abstract

The dewatering device for the papermaking felt comprises a dewatering machine body, the left inner wall and the right inner wall of the dewatering machine body are symmetrically and fixedly connected with a plurality of sets of vertical electric guide rails, and the left inner wall and the right inner wall of the dewatering machine body are symmetrically and fixedly connected with a plurality of sets of second circular sliding blocks. First circular sliding blocks are installed at the output ends of the vertical electric guide rails, and extrusion transverse rollers are installed between the two first circular sliding blocks corresponding to each other in the left-right direction and between the two second circular sliding blocks corresponding to each other in the left-right direction correspondingly. According to the dewatering device for the papermaking felt, the pump machine and the airflow spray head are matched to spray hot air, the dewatering efficiency is greatly improved in a double-drying mode of contact heating during extrusion of a single ring of the electric heating wire, the intelligent structure composed of a U-shaped notch, a spring, a sliding inner block and a pressure sensor is matched, the starting number of the single ring of the electric heating wire can be accurately controlled according to the width of the felt, and the dewatering efficiency is improved. And energy waste is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dewatering device, in particular to a dewatering device for papermaking felt. BACKGROUND

[0002] The daily maintenance and care of the papermaking felt are crucial for prolonging its service life and ensuring the papermaking quality. In the papermaking process, the felt will continuously absorb impurities such as paper pulp, filler and chemical agents. If the felt needs to be temporarily stopped or replaced, it should be cleaned and dried before storage. A humid environment can easily cause the felt to mildew and breed bacteria, affecting its performance and service life.

[0003] The specification of Chinese patent CN218936823U discloses a papermaking felt efficient dewatering equipment, which comprises a dewatering box. Inlets and outlets are respectively formed on the left and right sides of the dewatering box. A first supporting roller is arranged on the inner side of the outlet. A lower extrusion roller is arranged on the right side of the first supporting roller. An extension mechanism is arranged above the lower extrusion roller. An upper extrusion roller is rotatably arranged at the lower end of the extension mechanism. A second supporting roller is arranged on the right side of the lower extrusion roller. A third supporting roller is arranged on the right side of the second supporting roller and is lower than the second supporting roller. A fourth supporting roller is arranged between the second supporting roller and the third supporting roller and is lower than the third supporting roller. A first hot air disc is arranged between the second supporting roller and the third supporting roller. A second hot air disc is arranged between the third supporting roller and the fourth supporting roller. The papermaking felt is extruded by the upper extrusion roller and the lower extrusion roller, and then the two sides of the papermaking felt are dried by the first hot air disc and the second hot air disc, so that the papermaking felt is uniformly dried.

[0004] The existing papermaking felt dewatering device has not been reasonably optimized in terms of power consumption during mechanical extrusion and heat energy consumption during hot air drying. The heating elements of some devices cannot be effectively adjusted according to the actual situation of the felt. Even when processing narrow-width or low-water-content felt, the device still operates at full power, resulting in a large amount of energy waste and increasing the production cost of enterprises. UTILITY MODEL CONTENTS

[0005] In view of the above existing technology, the technical problem to be solved by the utility model is that the existing papermaking felt dewatering device has not been reasonably optimized in terms of power consumption during mechanical extrusion and heat energy consumption during hot air drying. The heating elements of some devices cannot be effectively adjusted according to the actual situation of the felt. Even when processing narrow-width or low-water-content felt, the device still operates at full power, resulting in a large amount of energy waste and increasing the production cost of enterprises.

[0006] In order to solve the above problems, the utility model provides a kind of dewatering device for papermaking blanket, including dewatering machine body, the left and right two inner walls of dewatering machine body are symmetrically connected with multiple vertical electric guide rails, the left and right two inner walls of dewatering machine body are symmetrically connected with multiple second circular slide blocks, the output end of vertical electric guide rail is equipped with first circular slide block, and the corresponding two first circular slide blocks and the corresponding two second circular slide blocks are respectively equipped with extrusion transverse roller between left and right, the inner end of extrusion transverse roller is fixedly connected with internal linkage roller, and the outer end of internal linkage roller is fixedly connected with multiple electric heating wire single turns, the outer end of extrusion transverse roller is equipped with side flexible cover layer, the outer side of a group of extrusion transverse rollers located in the inlet of dewatering machine body is equipped with multiple U-shaped notches located in the inner side of side flexible cover layer, the inner side wall of U-shaped notch is fixedly connected with spring, and the outer end of spring is fixedly connected with sliding inner block slidingly connected in U-shaped notch, and the outer side of extrusion transverse roller is equipped with multiple pressure sensors located in the inner side of U-shaped notch.

[0007] In the above-mentioned dewatering device for papermaking blanket, the dewatering device for papermaking blanket pump and the air jet nozzle cooperate to spray hot air, and the electric heating wire single turn is heated by contact when extruding, so that the double drying mode greatly improves the dewatering efficiency, and the intelligent structure composed of U-shaped notch, spring, sliding inner block and pressure sensor can accurately control the number of electric heating wire single turns started according to the width of the blanket, so that energy waste is effectively avoided.

[0008] As a further improvement of the present application, the blanket body is wound between the upper and lower extrusion transverse rollers, and the upper inner wall of the dewatering machine body is fixedly connected with multiple air jet nozzles.

[0009] As a further improvement of the present application, the upper end of the dewatering machine body is fixedly connected with a pump, and the pump is in communication with the multiple air jet nozzles.

[0010] As a further improvement of the present application, the left end of the dewatering machine body is fixedly connected with an electric driver collection side box, and the multiple electric heating wire single turns are arranged horizontally and equidistantly.

[0011] As a further improvement of the present application, the pressure sensor and the corresponding sliding inner block cooperate with each other, and the inner end of the dewatering machine body is provided with a water collecting bin.

[0012] As a further improvement of the present application, the right side of the dewatering machine body is fixedly connected with a water outlet pipe, and the water outlet pipe and the water collecting bin are in communication.

[0013] As a further improvement of the present application, the upper end of the water collecting bin is fixedly connected with a screen top layer, and the screen top layer is located directly below the multiple extrusion transverse rollers.

[0014] In summary, the vertical electric guide rail of the papermaking felt dewatering device can flexibly adjust the extrusion transverse roller gap according to the thickness of the felt body, cooperate with the extrusion transverse roller to exert mechanical pressure, realize effective extrusion dewatering of felt of different thicknesses, and cooperate with the pump and the airflow nozzle to spray hot air. The single coil of electric heating wire is in contact with the felt during extrusion and is heated. The double drying mode greatly improves the dewatering efficiency. In terms of structural design, the side flexible sleeve layer reduces the damage of extrusion to the felt, prolongs the service life of the felt, and at the same time, the intelligent structure composed of the U-shaped notch, the spring, the sliding inner block and the pressure sensor can accurately control the number of single coils of electric heating wires started according to the width of the felt, avoid energy waste, cooperate with the water collecting tank to collect wastewater, and the top layer of the screen intercepts the dust to prevent the outlet pipe from being blocked, so as to ensure the stable operation of the wastewater discharge system. The overall device takes into account the dewatering performance, energy saving and equipment maintenance, and improves the comprehensive benefits of the papermaking felt dewatering work. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a side view of the dewatering machine body of the first embodiment of the application;

[0016] Figure 2 It is an exploded view of the dewatering machine body of the first embodiment of the application;

[0017] Figure 3 It is a sectional view of the dewatering machine body of the first embodiment of the application; Figure 2 It is a sectional view of the dewatering machine body of the first embodiment of the application;

[0018] Figure 4 It is a side view of a group of extrusion transverse rollers located at the inlet of the first embodiment of the application;

[0019] Figure 5 It is an enlarged view of the U-shaped notch of the first embodiment of the application;

[0020] Figure 6 It is an enlarged view of the vertical electric guide rail of the first embodiment of the application;

[0021] Figure 7 It is a schematic view of the water collecting tank of the second embodiment of the application.

[0022] Explanation of reference numerals in the drawings:

[0023] 1, dewatering machine body; 2, pump; 3, airflow nozzle; 4, vertical electric guide rail; 5, first circular slide block; 6, second circular slide block; 7, extrusion transverse roller; 8, internal linkage roller; 9, single coil of electric heating wire; 10, electric driver collection side box; 11, water collecting tank; 12, outlet pipe; 13, side flexible sleeve layer; 14, U-shaped notch; 15, spring; 16, sliding inner block; 17, pressure sensor; 18, felt body; 19, top layer of screen. DETAILED DESCRIPTION

[0024] Two embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] First embodiment:

[0026] Figures 1-6 A kind of dewatering device for papermaking blanket is shown, including dewatering machine body 1, the left and right two inner walls of dewatering machine body 1 are symmetrically fixedly connected with multiple groups of vertical electric guide rail 4, the left and right two inner walls of dewatering machine body 1 are symmetrically fixedly connected with multiple groups of second circular slide 6, the output end of vertical electric guide rail 4 is installed with first circular slide 5, corresponding two first circular slides 5 of left and right and corresponding two second circular slides 6 of left and right are respectively installed with extrusion transverse roller 7, the inner end of extrusion transverse roller 7 is fixedly connected with internal linkage roller 8, the outer end of internal linkage roller 8 is fixedly connected with multiple electric heating wire single turns 9, the outer end of extrusion transverse roller 7 is sleeved with side flexible sheath layer 13, a group of extrusion transverse roller 7 outside located in the inlet of dewatering machine body 1 is provided with multiple U-shaped notches 14 located in the inside of side flexible sheath layer 13, the inner side wall of U-shaped notch 14 is fixedly connected with spring 15, the outer end of spring 15 is fixedly connected with sliding inner block 16 that is slidably connected in U-shaped notch 14, the outer side of extrusion transverse roller 7 is provided with multiple pressure sensors 17 located in the inside of U-shaped notch 14.

[0027] Figures 1-6 The blanket body 18 is wound around between the upper and lower extrusion transverse rollers 7, the upper inner wall of dewatering machine body 1 is fixedly connected with multiple airflow nozzles 3, the upper end of dewatering machine body 1 is fixedly connected with pump 2, pump 2 and multiple airflow nozzles 3 are in communication with each other, the left end of dewatering machine body 1 is fixedly connected with electric driver collection side box 10, multiple electric heating wire single turns 9 are arranged horizontally and equidistantly, pressure sensor 17 and corresponding sliding inner block 16 are matched with each other, the lower side of the inner end of dewatering machine body 1 is provided with water collecting bin 11, the right side of dewatering machine body 1 is fixedly connected with water outlet pipe 12, water outlet pipe 12 and water collecting bin 11 are in communication with each other, the upper end of water collecting bin 11 is fixedly connected with screen top layer 19, screen top layer 19 is located directly below multiple extrusion transverse rollers 7.

[0028] Figures 2-6When the blanket body 18 needs to be dehydrated, the operator sends it into the dehydration machine body 1 and makes it pass through the corresponding multiple sets of extrusion transverse rollers 7. The vertical electric guide rail 4 can be accurately adjusted according to the actual thickness of the blanket body 18, the first circular sliding block 5 is driven to move in the vertical direction, so as to change the gap between the upper and lower extrusion transverse rollers 7, and ensure that the extrusion force of the extrusion transverse rollers 7 on the blanket body 18 of different thicknesses is appropriate. In the extrusion dehydration stage, the extrusion transverse rollers 7 apply mechanical pressure to the outer wall of the blanket body 18, so that the water in the blanket body 18 is extruded out. The flexible sleeve layer 13 is sleeved outside the extrusion transverse rollers 7, which can tightly fit the surface of the blanket body 18 during extrusion and play a certain buffering role, reducing the damage to the blanket body 18 caused by extrusion. During the extrusion process, the electric heating wire single coil 9 plays a heating and drying role. The U-shaped notch 14, spring 15, sliding inner block 16 and pressure sensor 17 outside the extrusion transverse roller 7 at the inlet of the dehydration machine body 1 constitute the intelligent starting control structure of the electric heating wire single coil 9. When the blanket body 18 enters between the extrusion transverse rollers 7, its width determines the extrusion degree of the sliding inner block 16 in the U-shaped notch 14. With the extrusion of the blanket body 18, the sliding inner block 16 slides in the U-shaped notch 14 and compresses the spring 15. When the sliding inner block 16 extrudes the pressure sensor 17, the pressure sensor 17 converts the pressure signal into an electric signal and transmits it to the external control terminal. The external control terminal judges the width information of the blanket body 18 according to the preset program and the received signal, and then accurately controls the starting of the electric heating wire single coil 9 at the corresponding position, avoiding unnecessary energy consumption. The started electric heating wire single coil 9 is connected with the extrusion transverse roller 7 through the internal linkage roller 8. During the rotation of the extrusion transverse roller 7, it keeps contact with the outer side wall of the blanket body 18, transmits heat to the blanket body 18, and accelerates the evaporation of water on the surface of the blanket body 18. At the same time, the pump 2 pressurizes and heats the external gas, and then sprays it into the dehydration machine body 1 through the airflow nozzle 3. The multiple airflow nozzles 3 are evenly distributed on the inner wall of the dehydration machine body 1. The sprayed hot gas can form a stable hot gas flow field in the dehydration machine body 1, further assisting the drying of the water vapor on the surface of the blanket body 18 and improving the drying efficiency. The hot gas flow circulates in the dehydration machine body 1 and fully contacts with the blanket body 18, taking away the evaporated water vapor.

[0029] Second embodiment:

[0030] Figure 7The wastewater squeezed out from the felt body 18 flows downward under the action of gravity during the dewatering process, and finally falls into the water collecting bin 11 at the lower side of the upper end of the dewatering machine body 1. The screen top layer 19 at the upper end of the water collecting bin 11 can effectively intercept the impurities such as wool scraps mixed in the wastewater, avoid these impurities entering the water outlet pipe 12, prevent the water outlet pipe 12 from being blocked, ensure the smooth operation of the wastewater discharge system. After the wastewater is temporarily stored in the water collecting bin 11, it is discharged from the dewatering machine body 1 through the water outlet pipe 12, and the whole dewatering process is completed.

[0031] In combination with the current actual demand, the above-mentioned embodiments adopted by the present application are not limited to the above, various changes made within the knowledge possessed by those skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. A dewatering device for a papermaking felt, characterized by: Including the dewatering machine body (1), the left and right two inner walls of the dewatering machine body (1) are symmetrically connected with a plurality of vertical electric guide rails (4), the left and right two inner walls of the dewatering machine body (1) are symmetrically connected with a plurality of second circular sliding blocks (6), the output end of the vertical electric guide rail (4) is provided with a first circular sliding block (5), and the corresponding two first circular sliding blocks (5) and the corresponding two second circular sliding blocks (6) are respectively provided with a plurality of extrusion transverse rollers (7), the inner end of the extrusion transverse roller (7) is fixedly connected with an internal linkage roller (8), the outer end of the internal linkage roller (8) is fixedly connected with a plurality of electric heating wire single turns (9), the outer end of the extrusion transverse roller (7) is provided with a side flexible sleeve layer (13), a plurality of U-shaped notches (14) are arranged on the outer side of a group of extrusion transverse rollers (7) of the dewatering machine body (1) and located on the inner side of the side flexible sleeve layer (13), the inner side wall of the U-shaped notch (14) is fixedly connected with a spring (15), the outer end of the spring (15) is fixedly connected with a sliding inner block (16) which is slidably connected in the U-shaped notch (14), and a plurality of pressure sensors (17) are arranged on the outer side of the extrusion transverse roller (7) and located on the inner side of the U-shaped notch (14).

2. A dewatering device for papermaking felts according to claim 1, characterized in that: The upper and lower extrusion transverse rollers (7) are wound with a blanket body (18), and a plurality of airflow nozzles (3) are fixedly connected to the upper inner wall of the dewatering machine body (1).

3. A dewatering device for papermaking felts according to claim 1, characterized in that: The upper end of the dewatering machine body (1) is fixedly connected with a pump (2), and the pump (2) and the plurality of airflow nozzles (3) are in communication with each other.

4. A dewatering device for papermaking felts according to claim 1, characterized in that: The left end of the dewatering machine body (1) is fixedly connected with an electric driver collection side box (10), and a plurality of electric heating wire single turns (9) are arranged horizontally and equidistantly.

5. A dewatering device for papermaking felts according to claim 1, characterized in that: The pressure sensor (17) and the corresponding sliding inner block (16) are matched with each other, and a water collecting bin (11) is arranged on the inner end of the dewatering machine body (1).

6. A dewatering device for papermaking felts according to claim 5, characterized in that: The right side of the dewatering machine body (1) is fixedly connected with a water outlet pipe (12), and the water outlet pipe (12) and the water collecting bin (11) are in communication with each other.

7. A dewatering device for papermaking felts according to claim 6, characterized in that: The upper end of the water collecting bin (11) is fixedly connected with a screen top layer (19), and the screen top layer (19) is located directly below a plurality of extrusion transverse rollers (7).

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