Automatic mud cake unloading device for sludge dewatering plate-and-frame filter press

Abstract

The utility model discloses an automatic mud cake unloading device for a sludge dewatering plate-and-frame filter press, which structurally comprises a filter plate arranged on a side beam of a rack, a mud unloader arranged on the side beam, the mud unloader comprises a moving seat, a guide beam is arranged on the side beam along the side beam, the moving seat is arranged on the guide beam in a sliding manner, the mud unloader further comprises a disturbance mechanism, and the disturbance mechanism is arranged on the guide beam. According to the utility model, the cam driven by the speed reducing motor is arranged in the sludge unloading device, and the cam is arranged to be in a spiral shape like a snail shell, so that the cam rotates to jack up the hanging lug and the filter plate in the process of pulling the filter plate; when the high part of the rotating cam moves into the notch from the bottom end of the hanging lug, the hanging lug loses the jacking of the cam and then falls down to impact the side beam, so that the filter plate vibrates, sludge with over-high viscosity or over-low solid content can be better separated from the filter plate under the vibration after being dehydrated, more vibration can be realized by setting the number of turns of rotation, and the sludge can be effectively separated from the filter plate. And the separation effect is better.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to an automatic mud cake unloading device for a sludge dewatering plate-frame filter press. Background Art

[0002] The plate and frame filter press is a device widely used for sludge dehydration. During the sludge treatment process, the filter press squeezes out the moisture of the sludge between the filter plates through filling pressure to form a mud cake, thereby squeezing and dehydrating the sludge between the filter plates.

[0003] In order to improve work efficiency and reduce manual operation, many plate and frame filter presses are equipped with automatic mud cake unloading devices, which are usually equipped with buckles on an action seat, through which the stacked filter plates are disassembled one by one, so that the sludge between the filter plates falls down for automatic mud cake unloading. In actual use, the viscosity, solid content, particle size distribution and other characteristics of the sludge will directly affect its dewatering effect. If the sludge viscosity is too high or the solid content is too low, the mud cake may adhere relatively tightly to the filter plate and be difficult to separate. The prior art does not perform other disturbance operations on the filter plate, so that the sludge with too high viscosity or too low solid content is difficult to separate from the filter plate after dehydration, and the operator is often required to manually peel it off, causing inconvenience to use. Utility Model Content

[0004] In view of the above problems, the utility model provides an automatic mud cake unloading device for a sludge dewatering plate and frame filter press, whose structure includes a frame and filter plates arranged and mounted on two side beams of the frame, the side beams are provided with a mud unloader that can move along the side beams, wherein the mud unloader includes an action seat and two buckles arranged on the action seat opposite to each other, the buckles have the elasticity to expand outwardly toward the action seat and the action seat has space for the buckles to swing inwardly, guide beams are provided along the side beams, and the action seat is slidably mounted on the guide beams; the side ends of the filter plates are hung on the side beams by hanging ears, and the buckles of the mud unloader drive the filter plates to move by the hanging ears, and the mud unloader also includes a disturbance mechanism, and the disturbance mechanism includes a cam, and the cam abuts against the hanging ears to cause the mud unloader to vibrate.

[0005] Furthermore, a running wheel is provided at the bottom end of the hanging ear, and the running wheel rolls along the side beam;

[0006] The side beam is in a stepped shape, the hanging ear is hung on the top end of the side beam, and the horizontal height of the top end of the action seat is lower than the horizontal heights of the top end of the side beam and the bottom end of the hanging ear.

[0007] Furthermore, a reduction motor is installed in the moving seat, and the cam is connected to the reduction motor.

[0008] Furthermore, the cam is spiral-shaped, and has a high portion farther from the center and a low portion closer to the center on a line connecting the centers of the cams, and the high portion and the low portion are connected and transitioned by a spiral arc surrounding the cam.

[0009] Furthermore, the distance between the lower portion and the higher portion of the cam is less than or equal to the distance between the lower end of the hanging ear lifted by the higher portion and the upper end of the side beam.

[0010] Furthermore, the rotation axis of the cam is parallel to the length direction of the side beam, and a notch is provided at the bottom end of the hook in the direction of movement of the high part of the cam on the hook, and the high part of the rotating cam moves from the bottom end of the hook to the notch.

[0011] Furthermore, the cam is close to a buckle on one side of the action seat, and the side buckle is located at an end away from the moving direction in which the mud discharger drives the filter plate to be disassembled.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model has a cam driven by a reduction motor in the mud unloader, and the cam is set to be in a spiral shape like a snail shell. In the process of pulling the filter plate, the reduction motor drives the cam to rotate, thereby gradually lifting the hanging ear and the filter plate. When the high part of the rotating cam moves from the bottom end of the hanging ear to the notch, the hanging ear loses the lifting of the cam and freely falls and hits the side beam, thereby causing the filter plate to vibrate, so that sludge with too high viscosity or too low solid content can be better separated from the filter plate under the vibration after dehydration. By setting the number of revolutions of the cam, more vibration can be achieved, thereby achieving a better separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of an automatic mud cake unloading device for a sludge dewatering plate and frame filter press.

[0015] Figure 2 It is a side structural schematic diagram of the cooperation between the mud discharger and the filter plate of the utility model.

[0016] Figure 3 It is a schematic diagram of the side section structure of the mud discharger of the utility model.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the utility model mud discharger.

[0018] In the figure: 1, frame; 2, filter plate; 3, mud discharger; 11, side beam; 12, guide beam; 21, hanging ear; 22, running wheel; 31, moving seat; 32, buckle; 33, cam; 34, reduction motor; 33a, high part; 33b, low part. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Examples, such as Figure 1-Figure 4 As shown: The utility model provides an automatic mud cake unloading device for a sludge dewatering plate and frame filter press, the structure of which includes a frame 1 and filter plates 2 arranged on two side beams 11 of the frame 1, a mud unloader 3 that can move along the side beam is provided on the side beam 11, the mud unloader 3 includes an action seat 31 and two buckles 32 arranged on the action seat 31 facing each other, and a belt wheel transmission is usually used to drive the action seat 31 to move, that is, a transmission belt is put on the action seat 31 and driven by the belt wheels on both sides, and the side ends of the filter plates 2 are hung on the side beams 11 through the hanging ears 21 The buckle 32 has the elasticity to expand outward from the action seat 31 and the action seat 31 has space for the buckle 32 to swing inward. The two buckles 32 are inclined toward the middle. The buckle 32 of the mud discharger 3 drives the filter plate 2 to move through the hanging ear 21. After the back of one buckle 32 contacts the hanging ear 21, it is pressed to swing inward, allowing the action seat 31 to continue to enter. When the buckle 32 comes between the two hanging ears 21 of the two filter plates 2, the buckle 32 pops out. At this time, the action seat 31 moves in the opposite direction, and the filter plate 2 can be pulled out and disassembled through this buckle 32.

[0021] Among them, a guide beam 12 is provided on the side beam 11 along the side beam 11, and the action seat 31 is slidably mounted on the guide beam 12. In this embodiment, a running wheel 22 is provided at the bottom of the hanging ear, and the running wheel 22 rolls along the side beam 11. The side beam 11 is in a stepped shape, and the hanging ear is hung on the top of the side beam 11. The horizontal height of the top of the action seat 31 is lower than the horizontal height of the top of the side beam 11 and the bottom of the hanging ear, so as to avoid contact with the hanging ear 21 except for the buckle;

[0022] Moreover, the mud discharger 3 also includes a disturbance mechanism, which includes a cam 33. The cam 33 abuts against the hanging ear 21 to make the mud discharger 3 vibrate. A reduction motor 34 is installed in the action seat 31. The cam 33 is connected to the reduction motor 34. The reduction motor 34 drives the cam 33 through a reduction gear set by the motor, and has sufficient torque. The cam 33 is close to a buckle 32 on one side of the action seat 31. The side buckle 32 is located at an end away from the moving direction of the mud discharger 3 driving the filter plate 2 to be disassembled, so that the side buckle 32 can generate the required disturbance to the filter plate 2 when driving the filter plate 2 to be pulled out and disassembled.

[0023] Specifically, the cam 33 is in a spiral shape like a snail shell. The cam 33 has a high portion 33a farther from the center and a low portion 33b closer to the center on a line connecting the center of the cam 33. The high portion 33a and the low portion 33b are directly connected by a straight line in the closest path, and the high portion 33a and the low portion 33b are connected and transitioned by a spiral arc surrounding the cam 33 in the farther path between them, thereby forming a spiral shape like a snail shell.

[0024] It should be noted that the distance between the lower portion 33b and the upper portion 33a of the cam 33 is less than or equal to the distance between the lower end of the hanging ear 21 lifted by the upper portion 33a and the upper end of the side beam 11, thereby limiting the length of the upper portion 33a of the cam 33 extending to the upper end of the side beam 11, that is, the minimum distance between the lower end of the hanging ear 21 and the upper end of the side beam 11 must be greater than the distance between the lower portion 33b and the upper portion 33a. At this time, the horizontal position of the lower portion 33b of the cam 33 is located at the upper end of the side beam 11, thereby ensuring the falling distance of the filter plate 2. It is known that if the horizontal position of the lower portion 33b of the cam 33 is higher than the upper end of the side beam 11, but in order to prevent the hanging ear 21 from falling and hitting the cam 33, the contact portion between the hanging ear 21 and the cam 33 can be set to be higher than the bottom of the hanging ear 21.

[0025] It can be known that the installation direction of the cam 33 is usually in two states: the rotation axis of the cam 33 is parallel to the length direction of the side beam 11 and perpendicular to each other. If they are perpendicular, the front end or rear end surface of the ear 21 can be set above the rotation center of the cam 33. In the present embodiment, the rotation axis of the cam 33 is parallel to the length direction of the side beam 11, so as to facilitate the use of a suitable reduction motor 34. A notch is provided at the bottom end of the ear 21 in the direction of movement of the high portion 33a of the cam 33 on the ear, and the high portion 33a of the rotating cam 33 moves from the bottom end of the ear 21 to the notch.

[0026] During the specific implementation, the squeezing mechanism of the filter plate 2 is released, and one side of the stacked filter plates 2 has an empty space, and then the action seat 31 moves into the stacked filter plates 2. After the back side of a buckle 32 contacts the hanging ear 21, it is pressed and swings into the action seat 31, so that the action seat 31 continues to enter. When this buckle 32 comes between the two hanging ears 21 of the two filter plates 2, this buckle 32 pops out, and another buckle 32 is abutted against the hanging ear 21 to limit the further penetration of the action seat 31. At this time, the action seat 31 moves in the opposite direction, and the filter plate 2 is pulled out of the empty space area outward through the first buckle 32 to be disassembled. During the pulling process, the reduction motor 34 drives the cam 33 The cam 33 rotates and contacts the ear 21, and the contacting part is gradually transferred from the lower part 33b to the upper part 33a, so as to gradually lift up the ear 21 and the filter plate 2. When the upper part 33a of the cam 33 rotates to the top, the filter plate 2 rises to the limit, and then the upper part 33a of the rotating cam 33 moves from the bottom of the ear 21 to the notch. The ear 21 loses the lifting of the cam 33 and falls freely to hit the side beam 11, so that the filter plate 2 vibrates, so that the sludge with too high viscosity or too low solid content can be better separated from the filter plate under the vibration after dehydration. By setting the number of revolutions of the cam 33, more vibration can be made, so that the separation effect is better.

[0027] The running wheel 22 may be made of rubber material, which ensures vibration while avoiding unnecessary deformation caused by rigid impact.

[0028] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An automatic mud cake unloading device for a sludge dewatering plate and frame filter press, the structure of which includes a frame and filter plates arranged and mounted on two side beams of the frame, wherein the side beams are provided with mud unloaders that can move along the side beams, and the characteristics are: The mud unloader comprises an action seat and two buckles arranged on the action seat facing each other, the buckles have elasticity to expand outwards from the action seat and the action seat has a space for the buckles to swing inwards, a guide beam is arranged on the side beam along the side beam, and the action seat is slidably mounted on the guide beam; The side ends of the filter plates are hung on the side beams through the hanging ears, the buckles of the mud unloader drive the filter plates to move through the hanging ears, and the mud unloader also includes a disturbance mechanism, which includes a cam, and the cam abuts against the hanging ears to cause the mud unloader to vibrate.

2. The automatic mud cake unloading device for a sludge dewatering plate and frame filter press according to claim 1, characterized in that: The bottom end of the hanging ear is provided with a running wheel, and the running wheel rolls along the side beam; The side beam is in a stepped shape, the hanging ear is hung on the top end of the side beam, and the horizontal height of the top end of the action seat is lower than the horizontal heights of the top end of the side beam and the bottom end of the hanging ear.

3. The automatic mud cake unloading device for a sludge dewatering plate and frame filter press according to claim 2 is characterized in that: A reduction motor is arranged in the moving seat, and the cam is connected with the reduction motor.

4. The automatic mud cake unloading device for a sludge dewatering plate and frame filter press according to claim 3 is characterized in that: The cam is spiral-shaped, and has a high portion farther from the center and a low portion closer to the center on a line connecting the centers of the cams. The high portion and the low portion are connected and transitioned by a spiral arc surrounding the cam.

5. The automatic mud cake unloading device for a sludge dewatering plate and frame filter press according to claim 4, characterized in that: The distance between the lower part and the higher part of the cam is less than or equal to the distance between the lower end of the hanging ear lifted by the higher part and the upper end of the side beam.

6. The automatic mud cake unloading device for a sludge dewatering plate and frame filter press according to claim 4, characterized in that: The rotation axis of the cam is parallel to the length direction of the side beam, and a notch is provided at the bottom end of the hanging ear in the movement direction of the high part of the cam on the hanging ear, and the high part of the rotating cam moves from the bottom end of the hanging ear into the notch.

7. The automatic mud cake unloading device for a sludge dewatering plate and frame filter press according to claim 3, characterized in that: The cam is close to a buckle on one side of the action seat, and the side buckle is located at an end away from the moving direction in which the mud discharger drives the filter plate to be disassembled.

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