Pressurizing device of belt filter press

Abstract

The utility model discloses a supercharging device of a belt filter press, which relates to the technical field of sludge belt filter press equipment and comprises a primary supercharging system and a secondary supercharging system. The first-stage pressurization system comprises a guide roller, a tensioning roller, a first air cylinder, a pressurization belt and a dewatering roller, the pressurization belt is tensioned through the guide roller, the tensioning roller and the first air cylinder to generate pulling force, and the pulling force of the pressurization belt is converted into first-stage pressurization pressure on the dewatering roller; the second-stage pressurization system comprises a planetary roller, a planetary frame and a second air cylinder, the second air cylinder generates thrust, the thrust acts on the planetary roller frame and is transmitted to the pressurization belt through the planetary roller, and therefore sludge acting on the dewatering roller is increased, and second-stage pressurization pressure is formed; the pressurizing device has the beneficial effects that the water content of the sludge of the belt filter press is reduced through the newly increased pressure generated by the pressurizing device on the sludge, the solid-liquid separation effect is enhanced, and a great sludge reduction effect is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge belt filter press equipment, and in particular to a pressurization device for a belt filter press. Background Technology

[0002] The dewatering principle of a belt filter press is that after the sludge enters the upper and lower two tensioned and continuously rotating filter belts in the dewatering machine, it passes through a series of regularly arranged pressure rollers in an S-shape. Relying on the tension of the filter belt itself, pressure and shear force are generated on the sludge layer, squeezing out the capillary bound water in the sludge layer, thereby obtaining a sludge cake with a high solids content, and finally realizing the sludge dewatering process.

[0003] The characteristics of belt filter press are: less affected by load fluctuations, stable operation, simple operation and management control, low requirements for the quality of operators, low equipment noise, no vibration, continuous operation, and low power consumption.

[0004] As the organic matter content in sludge from domestic wastewater treatment plants increases, the moisture content after filtration by belt filter presses is generally around 80%. Even with the addition of inorganic agents for deep dewatering, the moisture content remains above 70%. Utility Model Content

[0005] The purpose of this invention is to provide a pressurizing device for a belt filter press in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A pressurizing device for a belt filter press includes a primary pressurizing system and a secondary pressurizing system; the primary pressurizing system includes a guide roller, a tension roller, a first cylinder, a pressurizing belt, and a dewatering roller; the secondary pressurizing system includes a planetary roller, a planetary frame, and a second cylinder.

[0008] Preferably, the number of guide rollers is at least two, the pressure belt is sleeved on the tension roller and the guide roller, the pressure belt has a closed-loop structure, the guide roller, the tension roller and the first cylinder are all arranged inside the closed loop of the pressure belt, a dewatering roller is arranged on one side between two adjacent guide rollers, and the dewatering roller is arranged outside the closed loop of the pressure belt; the first cylinder is arranged at a position that can push the tension roller to move and tension the pressure belt.

[0009] Preferably, the diameter of the dewatering roller is greater than the distance between two adjacent guide rollers.

[0010] Preferably, the booster belt is a high-strength V-belt assembly with toothed grooves, and the V-belts are arranged in parallel on the guide roller and tension roller to form the booster belt.

[0011] Preferably, there are multiple planetary rollers arranged on the planetary frame, and the second cylinder is positioned to push the planetary frame so that the planetary rollers press against the booster belt.

[0012] Preferably, the tensioning roller can move along the direction of the thrust of the first cylinder on the frame of the belt filter press.

[0013] Preferably, both the first cylinder and the second cylinder are fixed on the frame of the belt filter press.

[0014] Preferably, the planetary rollers are mounted on the planetary frame at both ends via bearing seats, and the planetary frame can move along the direction of the thrust of the second cylinder on the frame of the belt filter press.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by increasing the pressure on the sludge through the primary and secondary pressurization systems of the pressurization device, the water content of the sludge in the belt filter press is reduced, the solid-liquid separation effect is enhanced, and the sludge volume is greatly reduced. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the pressurization device of a belt filter press according to the present invention.

[0018] Figure 2 This is a schematic diagram illustrating the working principle of the pressurization device for a belt filter press as described in this utility model.

[0019] Figure 3 This is a schematic diagram of the pressure boosting belt of the pressure boosting device of the belt filter press described in this utility model.

[0020] The annotations in the attached figures are explained as follows:

[0021] 1. Filter cloth; 2. Sludge; 3. Pressure belt; 4. Guide roller; 5. Tension roller; 61. First cylinder; 62. Second cylinder; 7. Dewatering roller; 8. Planetary roller; 9. Planetary frame. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figures 1-2As shown, a pressurizing device for a belt filter press includes a primary pressurizing system and a secondary pressurizing system. The primary pressurizing system includes guide rollers 4, tension rollers 5, a first cylinder 61, a pressurizing belt 3, and a dewatering roller 7. The pressurizing belt 3 is tensioned by the guide rollers 4, tension rollers 5, and the first cylinder 61, generating tension. The tension of the pressurizing belt 3 is converted into primary pressurizing pressure on the dewatering roller 7. The secondary pressurizing system includes planetary rollers 8, a planetary frame 9, and a second cylinder 62. The second cylinder 62 generates thrust, which acts on the planetary roller 8 frame and is transmitted to the pressurizing belt 3 by the planetary rollers 8, thereby increasing the pressure on the sludge 2 on the dewatering roller 7, forming secondary pressurizing pressure. There are three guide rollers 4 and one tension roller 5. The line connecting the positions of the guide rollers 4 and the tension roller 5 forms an isosceles trapezoid. The two guide rollers 4 are arranged in a specific configuration. Above, a dewatering roller 7 is positioned below the two guide rollers 4. The diameter of the dewatering roller 7 is larger than the distance between its two adjacent guide rollers 4, and the diameter of the dewatering roller 7 is larger than that of a conventional filter roller. This increases the area and time that the pressurizing device can press the sludge 2. Another guide roller 4 and a tensioning roller 5 are respectively set on both sides below the dewatering roller 7. The pressurizing belt 3 is fitted onto the tensioning roller 5 and the three guide rollers 4. The pressurizing belt 3 has a closed-loop structure. The guide rollers 4, tensioning rollers 5, and the first cylinder 61 are all set inside the closed loop of the pressurizing belt 3, while the dewatering roller 7 is set outside the closed loop of the pressurizing belt 3. The positions of the three guide rollers 4 are fixed. The first cylinder 61 is set at a position that can push the tensioning roller 5 to move and tension the pressurizing belt 3. The tensioning roller 5 can move along the direction of the thrust of the first cylinder 61 on the frame of the belt filter press.

[0026] There are multiple planetary rollers 8. The two ends of the planetary rollers 8 are mounted on the planetary roller 8 frame through bearing seats. The planetary roller 8 frame can move in the direction of the thrust of the second cylinder 62 on the frame of the belt filter press. The second cylinder 62 is set at a position that can push the planetary roller 8 frame to press the planetary rollers 8 onto the pressure belt 3.

[0027] The first cylinder 61 and the second cylinder 62 are both fixed on the frame of the belt filter press.

[0028] like Figure 3 As shown, the booster belt 3 is a high-strength V-belt assembly with toothed grooves. The V-belts are arranged in parallel on the guide roller 4 and the tension roller 5 to form the booster belt 3.

[0029] Working principle: such as Figure 2As shown, during use, the filter cloth 1 with sludge 2 passes between the pressure belt 3 and the dewatering roller 7. In the primary pressure system consisting of the guide roller 4, tension roller 5, first cylinder 61, pressure belt 3, and dewatering roller 7, the thrust of the first cylinder 61 is continuously adjusted, generating tension in the pressure belt 3. This tightening of the pressure belt 3 creates a squeezing force on the dewatering roller 7, which increases with the thrust of the first cylinder 61. Under this squeezing force, the water in the sludge 2 is separated and removed from the filter belt. The sludge flows out and into the groove of the booster belt 3, and is discharged as the booster belt 3 rotates. Furthermore, a two-stage booster system consisting of planetary rollers 8, planetary frames 9, and a second cylinder 62 is set up. Under the thrust of the second cylinder 62, the planetary rollers 8 apply extrusion pressure to the booster belt 3. In the rotating state, the booster belt 3 will generate shear force and extrusion force on the sludge 2, which further improves the separation effect of the sludge 2 and reduces the moisture content of the sludge 2. Alternatively, multiple booster devices can be arranged in one filter press.

[0030] The frame, guide roller 4, tension roller 5, first cylinder 61, second cylinder 62, dewatering roller 7, planetary roller 8, and planetary frame 9 of the belt filter press are all general standard parts or components known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or through conventional experimental methods, so they will not be described in detail here.

[0031] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A pressurization device for a belt filter press, characterized in that: It includes a primary booster system and a secondary booster system; the primary booster system includes a guide roller (4), a tension roller (5), a first cylinder (61), a booster belt (3), and a dewatering roller (7); the secondary booster system includes a planetary roller (8), a planetary frame (9), and a second cylinder (62).

2. The pressurization device for a belt filter press according to claim 1, characterized in that: The number of guide rollers (4) is at least two. The pressure belt (3) is sleeved on the tension roller (5) and the guide roller (4). The pressure belt (3) has a closed-loop structure. The guide roller (4), the tension roller (5), and the first cylinder (61) are all arranged inside the closed loop of the pressure belt (3). A dewatering roller (7) is arranged on one side between two adjacent guide rollers (4). The dewatering roller (7) is arranged outside the closed loop of the pressure belt (3). The first cylinder (61) is arranged at a position that can push the tension roller (5) to move and tension the pressure belt (3).

3. The pressurization device for a belt filter press according to claim 2, characterized in that: The diameter of the dewatering roller (7) is greater than the distance between its two adjacent guide rollers (4).

4. The pressurization device for a belt filter press according to claim 1, characterized in that: The pressure belt (3) is a high-strength triangular belt group with toothed grooves. The triangular belts are arranged in parallel on the guide roller (4) and the tension roller (5) to form the pressure belt (3).

5. The pressurization device for a belt filter press according to claim 1, characterized in that: The number of planetary rollers (8) is multiple and arranged on the planetary frame (9). The second cylinder (62) is positioned to push the planetary frame (9) so that the planetary rollers (8) press against the booster belt (3).

6. The pressurization device for a belt filter press according to claim 2, characterized in that: The tension roller (5) can move on the frame of the belt filter press in the direction of the thrust of the first cylinder (61).

7. The pressurization device for a belt filter press according to claim 1, characterized in that: Both the first cylinder (61) and the second cylinder (62) are fixed on the frame of the belt filter press.

8. The pressurization device for a belt filter press according to claim 4, characterized in that: The planetary roller (8) is mounted on the planetary frame (9) at both ends via bearing seats. The planetary frame (9) can move along the direction of the thrust of the second cylinder (62) on the frame of the belt filter press.

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