CN220257368U

CN220257368U - Filter belt tensioning structure of belt filter

Info

Publication number: CN220257368U
Application number: CN202321564555.XU
Authority: CN
Inventors: 徐顺慧; 曹德能; 任飞; 赵磊
Original assignee: Yunnan Shengwei Chemical Co ltd
Current assignee: Yunnan Shengwei Chemical Co ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2023-12-29
Anticipated expiration: 2033-06-19

Abstract

The utility model provides a belt tensioning structure of a belt filter, which relates to the field of feed-grade calcium hydrophosphate production devices and comprises a sliding base, a motor, a screw rod, a driving tensioning roller, an electromagnet, a magnetic stripe, a driven tensioning roller, a pressure sensor, a distance sensor, a PLC (programmable logic controller) and a loudspeaker, wherein the driving tensioning roller and the driven tensioning roller are arranged on a frame, the electromagnet is arranged in a chute at the bottom of the sliding base, two ends of the driving tensioning roller are slidably arranged with the frame through the sliding base, the bottom of the driven tensioning roller is provided with the pressure sensor, the distance sensor is arranged on the frame opposite to the sliding base, the PLC and the loudspeaker are arranged on the frame, the pressure sensor and the distance sensor are connected with the PLC, the PLC is connected with the motor, the loudspeaker and the electromagnet, the tightness of filter cloth can be sensed for automatic tensioning, the stress extension service life of the screw rod can be reduced, the stretching or tensioning length of the filter cloth can be detected, and timely replacement and maintenance are facilitated.

Description

Filter belt tensioning structure of belt filter

Technical Field

The utility model relates to the field of feed-grade calcium hydrophosphate production devices, in particular to a filter belt tensioning structure of a belt filter.

Background

The belt filter is also called a belt filter, is a continuous filter and is novel efficient dehydration equipment. The operation condition is similar to a belt conveyor, the slurry is dehydrated in the conveying process, the solid and the liquid are separated, and the dreg is filtered. The filter cloth is required to be tensioned in the use process of the belt filter, the filter cloth is tensioned by gravity through a gravity tensioning roller at the driven end of the tail, the filter cloth is made of polyester fiber, the filter cloth can be lengthened due to tension, material temperature and the like in the use process, when the adjustment range of the gravity tensioning device is exceeded, a new filter cloth is required to be replaced, the filter cloth has practical value at the moment, raw materials are wasted when the filter cloth is replaced, and the production cost is increased.

In view of the above problems, chinese patent No. CN202121943583.3 discloses a "vacuum belt filter capable of tensioning filter cloth", when the value of the pressure sensor becomes smaller, the controller electrically connected determines that the tensioning force of the filter belt is insufficient at this time, the controller will automatically control the two adjusting motors at different positions to start, and the adjusting motors are positive and negative motors, and the filter belt is tensioned again by driving the screw rod to rotate, but the device still finds problems in use.

Firstly, the screw rod is difficult to rotate due to the fact that the screw thread of the screw rod is easy to deform after a period of time due to the fact that the roller is acted on the screw rod under tension in the working process of the belt filter; secondly, the screw rod is vertically arranged, and the tensioning space is positioned below the filter cloth and limited in expansion and contraction; thirdly, the elongation of the filter cloth cannot be perceived, the filtering effect is deteriorated and even lost after the filter cloth is stretched too long, and if the re-belt filter still runs continuously, the product filtration is failed, so the utility model provides a filter belt tensioning structure of the belt filter.

Disclosure of Invention

In order to overcome the problems in the background art, the utility model provides a filter belt tensioning structure of a belt filter, which can sense the tightness of filter cloth to automatically tension, reduce the stress of a screw rod to prolong the service life, detect the stretching or tensioning length of the filter cloth and facilitate the timely replacement and maintenance.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides a take filter belt tensioning structure, includes slide base, motor, lead screw, initiative tensioning roller, electro-magnet, magnetic stripe, driven tensioning roller, pressure sensor, distance sensor, PLC controller, speaker, initiative tensioning roller and driven tensioning roller are installed in the frame of taking filter rubber tape below, the electro-magnet is installed in the spout of slide base bottom, initiative tensioning roller both ends set up slide base and frame slidable mounting, slide base is connected with the lead screw through motor drive, pressure sensor is installed to driven tensioning roller bottom, form the tensioning path of Z style of calligraphy after filter cloth passes through driven tensioning roller and initiative tensioning roller in proper order, distance sensor installs in the frame opposite with slide base, PLC controller and speaker are installed in the frame, pressure sensor, distance sensor is connected with the PLC controller, the PLC controller is connected with motor, the speaker, the electro-magnet.

Further, the electromagnet is arranged on two side walls of the sliding chute of the sliding base, and the magnetic strips are arranged on the opposite wall surfaces of the frame of the electromagnet.

Further, the two ends of the driving tensioning roller are arranged on a group of sliding bases, the sliding bases are slidably arranged with the cross rod of the frame through sliding grooves, the screw rod is arranged in a threaded transmission hole formed in the upper portion of the sliding base, and the two ends of the screw rod are connected with a motor arranged on the cross rod of the frame.

Further, the driven tensioning roller is arranged on a vertical rod of the frame, and a buffer spring is arranged between the bottoms of the bases at the two ends of the driven tensioning roller and the pressure sensor.

Further, the outside of the screw rod is provided with a telescopic protection sleeve, and two ends of the telescopic protection sleeve are connected with the sliding base and the motor.

Further, the PLC is connected with a display screen.

Further, the distance sensor is an infrared distance measurement sensor.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is provided with a sliding base, a driving tensioning roller, a driven tensioning roller and a pressure sensor, when the pressure sensor detects that the pressure is reduced, the sliding base can drive the driving tensioning roller to automatically tension the filter cloth; the electromagnet and the magnetic stripe are arranged, the electromagnet can repel and slide with the magnetic stripe on the rack during tensioning, the electromagnet can be adsorbed and fixed with the magnetic stripe on the rack after tensioning is completed, the stability and the firmness of the sliding base and the active tensioning roller are ensured, and the stress of the screw rod can be reduced, and the service life of the screw rod is prolonged; the distance sensor is arranged to detect the stretching or tensioning length of the filter cloth, so that the filter cloth can be replaced and maintained in time.

Drawings

For the purpose of clearly illustrating the technical solutions in the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be described.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the mounting structure of the present utility model;

FIG. 3 is a schematic view of a sliding base structure according to the present utility model;

FIG. 4 is a control flow diagram of the present utility model;

fig. 5 is a schematic circuit diagram of the present utility model.

The device comprises a 1-sliding base, a 11-sliding chute, a 2-motor, a 3-screw rod, a 31-telescopic protective sleeve, a 4-driving tension roller, a 5-electromagnet, a 6-magnetic stripe, a 7-driven tension roller, a 71-buffer spring, an 8-pressure sensor, a 9-distance sensor, a 10-PLC controller, a 20-loudspeaker, a 30-rubber belt, a 40-rack and 50-filter cloth.

Detailed Description

In order to make the objects, technical solutions and advantageous effects of the present utility model more apparent, preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding of the skilled person.

The utility model discloses a belt tensioning structure of a belt filter, referring to fig. 1-5, the belt tensioning structure of the belt filter comprises a sliding base 1, a motor 2, a screw rod 3, a driving tensioning roller 4, an electromagnet 5, a magnetic stripe 6, a driven tensioning roller 7, a pressure sensor 8, a distance sensor 9, a PLC controller 10 and a loudspeaker 20, wherein the driving tensioning roller 4 and the driven tensioning roller 7 are arranged on a frame 40 below a rubber belt 30 of the belt filter, the electromagnet 5 is arranged in a chute 11 at the bottom of the sliding base 1, the sliding base 1 is arranged at two ends of the driving tensioning roller 4 and slidably arranged on the frame 40, the sliding base 1 is connected with the screw rod 3 driven by the motor 2, the bottom of the driven tensioning roller 7 is provided with the pressure sensor 8, a filter cloth 50 sequentially passes through the driven tensioning roller 7 and the driving tensioning roller 4 to form a Z-shaped tensioning path, the distance sensor 9 is arranged on the frame 40 opposite to the sliding base 1, the PLC controller 10 and the loudspeaker 20 are arranged on the frame 40, the pressure sensor 8 and the distance sensor 9 are connected with the PLC controller 10, and the PLC controller 10 are connected with the motor 2, the loudspeaker 20 and the electromagnet 5.

In the working process of the belt filter, the filter cloth 50 forms a closed ring shape after passing through each filter cloth guide roller on the frame 40, the driven tensioning roller 7 and the driving tensioning roller 4, the filter cloth 50 continuously runs through the driven tensioning roller 7, the pressure sensor 8 at the bottom of the driven tensioning roller 7 can detect the acting force of the filter cloth 50 on the driven tensioning roller 7, when the pressure signal received by the pressure sensor 8 is reduced, the pressure sensor 8 feeds back a signal to the PLC 10, the PLC 10 outputs a signal to the motor 2, the electromagnet 5 and the distance sensor 9, the electromagnet 5 changes the magnetic pole to repel the magnetic stripe 6, the sliding base 1 is convenient to move, the motor 2 is started to rotate the screw rod 3, the sliding base 1 is driven to move left and right, so that the active tensioning roller 4 arranged on the sliding base 1 is moved, the filter cloth 50 is tensioned, the distance sensor 9 is started to detect the moving distance of the sliding base 1 in the tensioning process, the stretching amount of the filter cloth 50 is judged, when a pressure signal received by the pressure sensor 8 in the tensioning process reaches a set pressure interval, the pressure sensor 8 feeds back a signal to the PLC 10, the PLC 10 outputs a signal to the motor 2 and the electromagnet 5, the motor 2 is closed, the electromagnet 5 changes the magnetic pole to be attracted and fixed with the magnetic stripe 6, and the stability and the firmness of the sliding base 1 and the active tensioning roller 4 are ensured; when the distance sensor 9 detects that the moving distance of the sliding base 1 is close to the maximum value of the set stretching amount in the tensioning process, the distance sensor 9 feeds back a signal to the PLC 10, the PLC 10 outputs a signal to the loudspeaker 20, and the loudspeaker 20 sends an alarm to remind an operator of maintaining or replacing the filter cloth 50.

Referring to fig. 1-5, the electromagnet 5 is mounted on two side walls of the chute 11 of the sliding base 1, the magnetic strip 6 is mounted on the opposite wall surface of the frame 40 of the electromagnet 5, and can move by repulsive force to facilitate the sliding base 1, and attractive force facilitates the fixing of the sliding base 1.

Referring to fig. 1-5, two ends of the active tensioning roller 4 are mounted on a group of sliding bases 1, the sliding bases 1 are slidably mounted with a cross bar of the frame 40 through sliding grooves 11, a screw rod 3 is mounted in a threaded transmission hole formed in the upper portion of the sliding bases 1, two ends of the screw rod 3 are connected with a motor 2 mounted on the cross bar of the frame 40, and the sliding bases 1 are driven to move on the cross bar of the frame 40 through the rotation of the screw rod 3 in the threaded transmission hole.

Referring to fig. 1-5, the driven tensioning roller 7 is mounted on a vertical rod of the frame 40, and a buffer spring 71 is arranged between the bottom of the base at two ends of the driven tensioning roller 7 and the pressure sensor 8, so that shock can be absorbed.

Referring to fig. 1-5, the outside of the screw rod 3 is provided with a telescopic protection sleeve 31, two ends of the telescopic protection sleeve 31 are connected with the sliding base 1 and the motor 2, so that the sliding base 1 can move on the screw rod 3 and simultaneously the screw rod 3 is protected from being influenced by pollution of filtered materials, and the failure rate is reduced.

Referring to fig. 1-5, the PLC controller 10 is connected with a display screen to facilitate viewing of the tension pressure and distance.

Referring to fig. 1-5, the distance sensor 9 is an infrared distance measuring sensor, and can accurately measure the moving distance of the sliding base 1.

The working process comprises the following steps:

in the working process of the belt filter, the pressure sensor 8 at the bottom of the driven tensioning roller 7 can detect acting force of the filter cloth 50 on the driven tensioning roller 7, when a pressure signal received by the pressure sensor 8 becomes small, the electromagnet 5 changes magnetic poles and repels the magnetic stripe 6, the motor 2 is started to enable the screw rod 3 to rotate, the sliding base 1 is driven to move left and right, the filter cloth 50 is tensioned, the distance sensor 9 detects the moving distance of the sliding base 1 in the tensioning process, the motor 2 is closed after the pressure signal received by the pressure sensor 8 reaches a set pressure interval in the tensioning process, the electromagnet 5 changes magnetic poles and the magnetic stripe 6 are attracted and fixed, and the loudspeaker 20 gives an alarm after the distance sensor 9 detects that the moving distance of the sliding base 1 is close to a set stretching amount maximum in the tensioning process.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. A take filter belt tensioning texture, its characterized in that: the belt filter belt tensioning structure comprises a sliding base (1), a motor (2), a screw rod (3), a driving tensioning roller (4), an electromagnet (5), a magnetic stripe (6), a driven tensioning roller (7), a pressure sensor (8), a distance sensor (9), a PLC (programmable logic controller) 10 and a loudspeaker (20), wherein the driving tensioning roller (4) and the driven tensioning roller (7) are arranged on a frame (40) below a belt filter rubber belt (30), the electromagnet (5) is arranged in a chute (11) at the bottom of the sliding base (1), the sliding base (1) is arranged at two ends of the driving tensioning roller (4) and is slidably mounted with the frame (40), the sliding base (1) is connected with the screw rod (3) which is driven by the motor (2), the pressure sensor (8) is arranged at the bottom of the driven tensioning roller (7), a Z-shaped tensioning path is formed after the filter cloth (50) sequentially passes through the driven tensioning roller (7) and the driving tensioning roller (4), the distance sensor (9) is arranged on the frame (40) opposite to the sliding base (1), the PLC (10) and the distance sensor (20) is arranged on the frame (8) and the distance sensor (9) is connected with the PLC, the PLC controller (10) is connected with the motor (2), the loudspeaker (20) and the electromagnet (5).

2. The belt filter belt tensioning apparatus as in claim 1, wherein: the electromagnet (5) is arranged on two side walls of the sliding chute (11) of the sliding base (1), and the magnetic strip (6) is arranged on the wall surface of the frame (40) opposite to the electromagnet (5).

3. The belt filter belt tensioning apparatus as in claim 1, wherein: the driving tensioning roller (4) is arranged on a group of sliding bases (1) at two ends, the sliding bases (1) are slidably arranged with a cross rod of a frame (40) through sliding grooves (11), a screw rod (3) is arranged in a threaded transmission hole formed in the upper portion of the sliding bases (1), and two ends of the screw rod (3) are connected with a motor (2) arranged on the cross rod of the frame (40).

4. The belt filter belt tensioning apparatus as in claim 1, wherein: the driven tensioning roller (7) is arranged on a vertical rod of the frame (40), and a buffer spring (71) is arranged between the bottoms of the bases at the two ends of the driven tensioning roller (7) and the pressure sensor (8).

5. The belt filter belt tensioning apparatus as in claim 1, wherein: the outside of the screw rod (3) is provided with a telescopic protective sleeve (31), and two ends of the telescopic protective sleeve (31) are connected with the sliding base (1) and the motor (2).

6. The belt filter belt tensioning apparatus as in claim 1, wherein: the PLC (10) is connected with a display screen.

7. The belt filter belt tensioning apparatus as in claim 1, wherein: the distance sensor (9) is an infrared distance measuring sensor.