An overflow height adjustable rotary drum filter

Abstract

An overflow height adjustable drum filter includes a filter body containing a filtration space for filtration. Within this filtration space is a rotating drum for material filtration. The filter body has an inlet for filtering wastewater and an outlet for discharging filtered water. A linkage design between a movable observation cover and a hydraulic guide rod ensures operational safety and allows for periodic observation and monitoring of the filtration process, facilitating timely detection of issues such as filter cloth blockage and abnormal drum vibration. A venting channel with a vent at the bottom of the drum filter allows for effective venting of the internal components. This dual protection mechanism of the overflow and venting outlet effectively prevents liquid leakage during filtration operations.

Description

Technical Field

[0001] This utility model relates to an environmental protection device, specifically an overflow height adjustable rotary drum filter. Background Technology

[0002] Rotary drum filters are widely used in chemical, pharmaceutical, food, metallurgical, and wastewater treatment industries, especially in industrial production requiring large-scale solid-liquid separation. Their core application environment is treating suspensions with high concentrations, high viscosity, or containing a large number of fine particles, such as in steel plant desulfurization, chemical raw material filtration, food processing, and sludge dewatering. Driven by negative pressure, the equipment adapts to different material characteristics, handling suspensions with high solid particle concentrations as well as colloidal systems or thin suspensions through pre-coating technology, meeting various process requirements. The filtration process takes place in a closed environment, reducing contamination leakage, and maintenance is simple, allowing for excellent filtration operations.

[0003] In the prior art, document 202410184558.3 ​​describes a drum structure and a drum filter. This application provides a drum structure and a drum filter, relating to the field of filtration equipment. It includes a drum, a filter screen, and a sealing assembly. The drum includes a pair of oppositely arranged end caps and a drum frame disposed between the end caps. Each end of the drum frame is connected to an end cap, and each end cap has a water inlet. The filter screen covers the drum frame and, together with the drum frame and end caps, forms a filtration chamber suitable for containing the liquid to be filtered. A sealing assembly is provided between the filter screen and the drum frame. The sealing assembly, from the water-facing direction to the back-water direction, sequentially includes a corrosion-resistant abutment ring and a receiving unit. The liquid to be filtered can apply a force towards the receiving unit to the corrosion-resistant abutment ring. After the corrosion-resistant abutment ring abuts against the receiving unit, the receiving unit can deform to fill the gap between the filter screen and the drum frame. This application has good sealing and corrosion resistance effects and eliminates the need for replacement of the sealing assembly.

[0004] The existing rotary drum filter can support the unit to deform to fill the gap between the filter screen and the drum frame, making it difficult for the liquid to be filtered to continue to seep out of the filter chamber along the gap between the filter screen and the drum frame. However, it also has the problem of not being able to control the opening and closing of the overflow port well, and not being able to divert the overflow position. Utility Model Content

[0005] In order to overcome the shortcomings of existing technologies in that the opening and closing of the overflow orifice is difficult to control when overflow is required, this utility model provides an overflow height adjustable rotary drum filter.

[0006] This utility model is achieved using the following technical solution: an overflow height adjustable drum filter, comprising a filter body, a filtration space for filtration within the filter body, a filtration drum for material filtration within the filtration space, an inlet for filtering wastewater and an outlet for discharging filtered water on the filter body, a pump assembly fitting on one side of the filter body (the pump assembly fitting being a water pump), a conveying pipe on the water pump for liquid flow, the conveying pipe being assembled with the filter body, an overflow protection device on one side of the filter body (the overflow protection device for protecting the filter body from water overflow being an overflow protection box), an overflow space within the overflow protection box, a protective overflow plate within the overflow space, and a driving component on the protective overflow plate.

[0007] The driving component is a driving threaded rod, and a protective overflow plate is provided at the bottom of the driving threaded rod. The driving threaded rod and the protective overflow plate are welded together.

[0008] The protective overflow plate is driven by a drive threaded rod, and a hand-held drive component is provided at the top of the drive threaded rod. The hand-held drive component is a hand-held drive wheel.

[0009] An observation component is provided on one side of the filter body, and the observation component used to observe the filtration situation inside the filter body is a movable observation cover.

[0010] A support component is provided between the movable observation cover and the filter body, and the support component used to support the movable observation cover is a hydraulic guide rod.

[0011] The overflow space has a water overflow port at the bottom, which is called an overflow outlet, and the filter body has a venting component at the bottom.

[0012] The venting component is a venting channel, and a venting port is provided on one side of the venting channel.

[0013] Compared to existing technologies, the combination of the drive threaded rod and the hand-held drive wheel enables stepless adjustment of the overflow plate height, avoiding the decrease in filtration efficiency caused by water level fluctuations in traditional fixed overflow devices. The overflow height can be reduced to extend the filtration time and improve the solid-liquid separation effect. The linkage design of the movable observation cover and the hydraulic guide rod ensures operational safety and allows for regular observation and monitoring of the filtration process through the movable observation cover, facilitating the timely detection of problems such as filter cloth blockage and abnormal drum vibration. A venting channel with a vent port is set at the bottom of the drum filter, which allows for effective venting of the drum filter's internal components. The dual protection mechanism of the overflow port and the vent port effectively prevents liquid leakage during filtration operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is the left view of this utility model;

[0016] In the diagram: 1 is the filter body, 2 is the filtration space, 3 is the inlet, 4 is the outlet, 5 is the water pump, 6 is the delivery pipe, 7 is the overflow protection box, 8 is the overflow protection plate, 9 is the drive threaded rod, 10 is the hand-held drive wheel, 11 is the movable observation cover, 12 is the supporting hydraulic guide rod, 13 is the overflow port, 14 is the venting channel, and 15 is the venting port. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] An overflow height adjustable drum filter includes a filter body 1, a filtration space 2 for filtration within the filter body 1, a filtration drum for material filtration within the filtration space 2, an inlet 3 for filtering wastewater and an outlet 4 for discharging filtered water on the filter body 1, a pump assembly (a water pump 5) on one side of the filter body 1, a conveying pipe 6 on the water pump 5 for liquid flow, the conveying pipe 6 being assembled with the filter body 1, an overflow protection device (an overflow protection housing 7) on one side of the filter body 1, an overflow protection space within the overflow protection housing 7, a protective overflow plate 8 within the overflow space, and a driving component on the protective overflow plate 8.

[0019] The driving component is a drive threaded rod 9, and a protective overflow plate 8 is provided at the bottom of the drive threaded rod 9. The drive threaded rod 9 and the protective overflow plate 8 are welded together. The protective overflow plate 8 is driven by the drive threaded rod 9. A hand-held driving component is provided at the top of the drive threaded rod 9. The hand-held driving component is a hand-held drive wheel 10. The combination of the drive threaded rod 9 and the hand-held drive wheel 10 realizes stepless adjustment of the overflow plate height, avoiding the decrease in filtration efficiency caused by water level fluctuations in traditional fixed overflow devices. The overflow height can be reduced to extend the filtration time and improve the solid-liquid separation effect. The linkage design of the movable observation cover and the hydraulic guide rod not only ensures operational safety, but also enables periodic observation and monitoring of the filtration process through the movable observation cover.

[0020] An observation component is provided on one side of the filter body 1. The observation component for observing the filtration status inside the filter body is a movable observation cover 11. A support component is provided between the movable observation cover 11 and the filter body 1. The support component for supporting the movable observation cover 11 is a hydraulic guide rod 12. A water overflow port is provided at the bottom of the overflow space. The water overflow port is an overflow port 13. A venting component is provided at the bottom of the filter body 1.

[0021] The venting component is a venting channel 14, and a venting port 15 is provided on one side of the venting channel 14. A venting channel is provided at the bottom of the drum filter, and a venting port 15 is provided on the venting channel 14. The venting port 15 can effectively carry out the venting operation inside the drum filter. The dual protection mechanism of overflow port 13 and venting port 15 effectively prevents liquid leakage during the filtration operation.

[0022] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An overflow height adjustable rotary drum filter, comprising a filter body, wherein a filtration space for filtration is provided within the filter body, a rotary drum for material filtration is provided within the filtration space, an inlet for wastewater to be filtered and an outlet for discharged filtered water are provided on the filter body, a pump assembly is provided on one side of the filter body, the pump assembly being a water pump, a conveying pipe is provided on the water pump for liquid flow, and the conveying pipe and the filter body are mutually assembled, characterized in that: An overflow protection device is provided on one side of the filter body. The overflow protection device is an overflow protection box. An overflow space is provided inside the overflow protection box. A protective overflow plate is provided inside the overflow space. A driving component is provided on the protective overflow plate.

2. The overflow height adjustable rotary drum filter according to claim 1, characterized in that: The driving component is a driving threaded rod, and a protective overflow plate is provided at the bottom of the driving threaded rod. The driving threaded rod and the protective overflow plate are welded together.

3. A surge height regulating drum filter according to claim 2, characterised in that: The protective overflow plate is driven by a drive threaded rod, and a hand-held drive component is provided at the top of the drive threaded rod. The hand-held drive component is a hand-held drive wheel.

4. The overflow height adjustable drum filter according to claim 1, characterized in that: An observation component is provided on one side of the filter body, and the observation component used to observe the filtration situation inside the filter body is a movable observation cover.

5. A surge height regulating drum filter according to claim 4, characterised in that: A support component is provided between the movable observation cover and the filter body, and the support component used to support the movable observation cover is a hydraulic guide rod.

6. A surge height regulating drum filter according to claim 5, characterised in that: The overflow space has a water overflow port at the bottom, which is called an overflow outlet, and the filter body has a venting component at the bottom.

7. A surge height regulating drum filter according to claim 6, characterised in that: The venting component is a venting channel, and a venting port is provided on one side of the venting channel.

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