Positive pressure type centralized filter with cleaning structure

Abstract

The utility model relates to the technical field of filtering equipment, in particular to a positive pressure type centralized filtering machine with a cleaning structure. The positive pressure type centralized filtering machine comprises a machine body internally provided with filter cloth, and a transferring assembly used for transferring the filter cloth is arranged at the lower end of the machine body; the transfer assembly comprises a main roller for driving the filter cloth to rotate and a plurality of auxiliary rollers for auxiliary supporting; a flushing pipe is installed above the transfer assembly, flow guide plates which are obliquely arranged towards the inner side are detachably connected between the machine body supporting legs, a discharging groove is formed between the flow guide plates on the two sides, and a bottom groove discharging opening is formed in the end of the discharging groove; the front end and the rear end of the flow guide plate and the front end and the rear end of the discharging groove are connected with baffles. The cleaning structure is changed from the original slag outlet end to the bottom of the main machine, backflow of cleaning dirty liquid is controlled, the cleaning structure is matched with the tightened filter cloth, a relatively closed space is formed, liquid splashing is reduced, and the production environment is optimized.

Description

Technical Field

[0001] The present application relates to the technical field of filtering equipment, and in particular to a positive pressure centralized filter with a cleaning structure. Background Art

[0002] Positive pressure centralized filters are widely used in industries such as chemical, pharmaceutical, and food for solid-liquid separation. They separate solid particles from liquid by applying pressure to force the liquid through a filter cloth. However, as filtration time increases, solid matter accumulates on the filter cloth surface, affecting filtration efficiency. Therefore, regular cleaning of the filter cloth is a necessary maintenance step. In existing equipment, the cleaning device is typically located at the slag discharge end for ease of operation and waste disposal, but this design also has significant drawbacks.

[0003] On the one hand, the cleaning device located at the slag discharge end takes up a large amount of operating space, which limits the layout flexibility of the equipment. On the other hand, the cleaning device is usually located at the slag discharge end, that is, the end of the filter cloth. This design requires the cleaning liquid to start from the end of the filter cloth and then flow along the filter cloth toward the filter body. Due to the uneven distribution of dirt on the filter cloth and the impact force of the cleaning liquid may not be sufficient to completely flush the dirt away, some dirt may be washed to other parts of the filter cloth during the cleaning process, causing backflow. Moreover, when cleaning, the cleaning liquid impacts the filter cloth through the nozzle, which may cause dirt and cleaning liquid to splash, thereby polluting the production environment. Utility Model Content

[0004] In order to ensure the cleaning effect and optimize the production environment, this application provides a positive pressure centralized filter with a cleaning structure.

[0005] The positive pressure centralized filter with cleaning structure provided in this application adopts the following technical solutions:

[0006] A positive pressure centralized filter with a cleaning structure includes a body with a built-in filter cloth, a transfer assembly for transferring the filter cloth is provided at the lower end of the body, the transfer assembly includes a main roller for driving the filter cloth to rotate and a plurality of auxiliary rollers for auxiliary support; a flushing pipe is installed above the transfer assembly, and a guide plate inclined inwardly is detachably connected between the body legs, a discharge trough is provided between the guide plates on both sides, and a bottom trough discharge port is provided at the end of the discharge trough; the front and rear ends of the guide plates and the front and rear ends of the discharge trough are both connected with baffles.

[0007] By adopting the above technical solution, the cleaning structure is transferred to the lower end of the machine body, utilizing the space below the machine body; the filter cloth is tightened by the transfer mechanism, thereby preventing the filter cloth from being loose or wrinkled and affecting the cleaning effect. At the same time, the tightened filter cloth cooperates with the guide plate, discharge chute, baffle, etc. to form a relatively closed space, thereby avoiding splashing of cleaning liquid passing through the filter cloth and reducing environmental pollution.

[0008] Optionally, at least two flushing pipes are connected at intervals, and a plurality of nozzles are arranged at intervals on one side of the flushing pipe facing the filter cloth.

[0009] By adopting the above technical solution, the filter cloth can be evenly sprayed in multiple angles and areas during the cleaning process, thereby greatly improving the cleaning efficiency and the cleanliness of the filter cloth, and avoiding the influence of residual dirt on the subsequent filtering effect.

[0010] Optionally, the guide plate is detachably connected to the support legs of the machine body.

[0011] By adopting the above technical solution, the guide plate can be disassembled regularly and deeply cleaned to prevent dirt from caking on the guide plate.

[0012] Optionally, a slot for inserting the side end of the guide plate is provided on the inner side of the body support leg, and the slot passes through the front end of the body support leg.

[0013] Optionally, a retractable ball is provided on the side wall of the guide plate, and a limiting hole for inserting the ball is opened on the groove wall of the slot.

[0014] By adopting the above technical solution, the retractable ball head on the guide plate is used in conjunction with the limiting hole in the slot, and can automatically snap into the limiting hole when the guide plate is installed in place, providing a simple but reliable fixing effect.

[0015] Optionally, the ball heads are provided at both the front and rear ends of the side wall of the guide plate, and the limiting holes correspond one-to-one to the ball heads.

[0016] By adopting the above technical solution, when inserting the guide plate, multiple ball heads provide multi-point support and fixation for the guide plate, which is more reliable; when deep cleaning is not required, there is no need to completely disassemble the guide plate. The guide plate can be pulled outward until the rear end ball head is inserted into the front end limit hole. At this time, most of the guide plate is exposed and can be flushed with a water gun, and the dirty water can flow out along the discharge trough.

[0017] Optionally, a slide rail is installed between the lower end of the guide plate and the slot wall on the lower side of the slot.

[0018] By adopting the above technical solution, the application of the slide rail structure reduces the friction when the guide plate moves in the slot, allowing the guide plate to be inserted and removed more smoothly, reducing the operating burden, while also avoiding direct wear between the guide plate and the slot, thereby extending the service life of the structure.

[0019] In summary, the beneficial effects of this application are as follows: This solution optimizes the cleaning structure of the positive pressure centralized filter and arranges the cleaning device and transfer assembly at the lower end of the machine body, thereby achieving a compact equipment layout and maximizing space utilization. The combined structure of the main roller and the auxiliary roller ensures the smooth operation of the filter cloth during the transfer and cleaning process, effectively preventing problems such as loosening and wrinkling of the filter cloth. At the same time, the closed collection system formed by the guide plate and the discharge trough can effectively control the backflow and splashing of the cleaning liquid, reduce environmental pollution, and improve the cleanliness of the production environment. The detachable design facilitates maintenance and operation, greatly improving the practicality and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the cleaning area structure of a positive pressure centralized filter with a cleaning structure.

[0021] Figure 2 This is a schematic diagram of the structure of the flushing pipe

[0022] Figure 3 It is a structural diagram of the guide plate.

[0023] Explanation of the accompanying reference numerals: 1. Machine body; 11. Slot; 2. Filter cloth; 3. Transfer assembly; 31. Main roller; 32. Auxiliary roller; 4. Flushing pipe; 41. Nozzle; 5. Guide plate; 51. Baffle; 52. Guide trough; 53. Discharge trough; 54. Bottom trough discharge port; 55. Ball head; 6. Slide rail. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] In this paper, a coordinate system XYZ is set, where the positive direction of the Z axis represents the top, the negative direction of the Z axis represents the bottom, the positive direction of the Y axis represents the front, the negative direction of the Y axis represents the back, the positive direction of the X axis represents the right, and the negative direction of the X axis represents the left.

[0026] The embodiment of the present application discloses a positive pressure centralized filter with a cleaning structure. Figure 1 and Figure 2 The positive pressure centralized filter with a cleaning mechanism includes a body 1 with a filter cloth 2 installed within. The internal structure of body 1 is identical to that of existing positive pressure centralized filters, comprising multiple working areas, including a filtration zone, a slag discharge zone, and a cleaning zone. The filter cloth 2 is installed within body 1 and sequentially transported through these multiple working areas, enabling continuous operation. Only the cleaning zone structure has been optimized; other structures are not detailed here.

[0027] In the filtration area, filter cloth 2 is transported via a metal steel belt. During the filtration phase of the filter housing 1, the liquid suspension enters the filter chamber via the liquid supply pump. The pneumatic butterfly valve in the upper housing opens, allowing the suspension to enter the filtration area where filter cloth 2 is located. Under pressure, the liquid passes through the filter cloth 2, trapping solid particles on it and forming a filter cake. Clean liquid then flows into the clean liquid tank. As filtration time increases, the number of solid particles on the filter cloth 2 increases, increasing the filtration resistance and the internal pressure of the system. When the system pressure reaches the set value, the pneumatic butterfly valve closes, stopping the suspension from entering. Compressed air is then used to drain the liquid from the filter chamber, compacting the solid particles on the filter cloth 2 and forming a filter cake.

[0028] Subsequently, the filter cloth 2 is transferred by rollers, and the part that has formed the filter cake is transferred to the slag unloading position of the slag unloading area. The filter cake on the filter cloth 2 is unloaded at the slag unloading end, and the solid waste is discharged from the equipment.

[0029] The lower end of the body 1 is a cleaning area, which is equipped with a transfer assembly 3 for continuing to transfer the filter cloth 2. The transfer assembly 3 includes two main rollers 31 installed on the left and right sides of the body 1, and multiple auxiliary rollers 32 installed at intervals. The main rollers 31 are responsible for driving the filter cloth 2 for transfer, and the auxiliary rollers 32 are used to assist in supporting and keeping the filter cloth 2 taut, ensuring that the filter cloth 2 will not become loose or wrinkled during the filtration and transfer process.

[0030] A flushing pipe 4 for flushing the filter cloth 2 is mounted above the transfer assembly 3. One flushing pipe 4 is provided on each left and right side of the housing 1 and extends along the front-to-back direction, completely covering the filter cloth 2 and ensuring a uniform cleaning effect across the entire surface of the filter cloth 2. Multiple nozzles 41 are evenly spaced at the lower end of the flushing pipe 4 to ensure a good flushing effect.

[0031] Deflectors 5 are removably mounted between the legs of the machine body 1. These deflectors 5 consist of two panels, one on each side. Baffles 51 are formed on both the front and rear sides of the deflectors 5, forming a guide trough 52 between the two baffles 51. Each panel is tilted downward, and a discharge trough 53 is welded between them. Baffles 51 are also integrally formed on the front and rear sides of the trough 53. A bottom trough outlet 54 is defined at the end of the trough 53, which can be connected to an external sewage pipe. The deflectors 5, the discharge trough 53, the inner wall of the machine body 1, and the taut filter cloth 2 form a sealed space, preventing the flushing fluid from splashing and contaminating the production environment.

[0032] Reference Figure 3The support leg of the machine body 1 is detachably connected to the guide plate 5. In one embodiment, the inner wall of the guide plate 5 near the support leg of the machine body 1 is bent upward and fixed with bolts. In another embodiment, a slot 11 is provided on the inner side of the support leg of the machine body 1. The slot 11 matches the inclination of the guide plate 5 and is inserted into the side end of the guide plate 5. The slot 11 extends through the front end of the support leg of the machine body 1 but not through the rear end of the support leg of the machine body 1. Since the latter embodiment is more convenient for assembly and disassembly, the present application uses the latter embodiment as an example.

[0033] A slide rail 6 is installed between the lower end of the guide plate 5 and the groove wall on the lower side of the slot 11. A ball head 55 is embedded in the front and rear ends of the outer wall of the side plate of the guide plate 5. The groove wall of the slot 11 is provided with a limiting hole for inserting the ball head 55, and the limiting hole corresponds one-to-one to the ball head 55.

[0034] When the guide plate 5 is inserted to the bottom of the groove abutting the slot 11, the ball heads 55 at both ends are respectively engaged in the corresponding limiting holes; when the guide plate 5 needs to be cleaned, when the guide plate 5 is pulled out, the ball heads 55 at the rear end are disengaged from the rear end limiting holes and shrink into the side wall of the guide plate 5, and the guide plate 5 is continuously pulled out until the ball heads 55 at the rear end are engaged in the front end limiting holes. At this time, the guide plate 5 is fixed and can be flushed.

[0035] The implementation principle of the positive pressure centralized filter with a cleaning structure in the embodiment of the present application is: the positive pressure centralized filter performs normal filtering operations. After the filtering and slag unloading are completed, the filter cloth 2 is transferred to the cleaning area, that is, the bottom of the machine body 1, and the cleaning liquid sprayed from the flushing pipe 4 is sprayed on the surface of the filter cloth 2 for cleaning. The dirty liquid is collected through the guide plate 5 and the discharge trough 53, and finally discharged from the sewage pipe to prevent splashing and pollution of the production environment.

[0036] After cleaning, the filter cloth 2 is transported to the working area and the next filtering cycle begins again.

[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. Positive pressure centralized filter with cleaning structure, characterized by: A machine body (1) with a built-in filter cloth (2) is provided at the lower end of the machine body (1) with a transfer assembly (3) for transferring the filter cloth (2), the transfer assembly (3) comprising a main roller (31) for driving the filter cloth (2) to rotate and a plurality of auxiliary rollers (32) for auxiliary support; A flushing pipe (4) is installed above the transfer assembly (3); a guide plate (5) tilted inwardly is detachably connected between the legs of the machine body (1); a discharge trough (53) is provided between the guide plates (5) on both sides; a bottom trough discharge port (54) is provided at the end of the discharge trough (53); and baffles (51) are connected to the front and rear ends of the guide plates (5) and the front and rear ends of the discharge trough (53).

2. The positive pressure centralized filter with a cleaning structure according to claim 1, characterized in that: At least two flushing pipes (4) are connected at intervals, and a plurality of nozzles (41) are arranged at intervals on one side of the flushing pipe (4) facing the filter cloth (2).

3. The positive pressure centralized filter with a cleaning structure according to claim 1, characterized in that: The guide plate (5) is detachably connected to the support legs of the machine body (1).

4. The positive pressure centralized filter with a cleaning structure according to claim 3, characterized in that: A slot (11) for inserting the side end of the guide plate (5) is provided on the inner side of the support leg of the machine body (1), and the slot (11) passes through the front end of the support leg of the machine body (1).

5. The positive pressure centralized filter with a cleaning structure according to claim 4, characterized in that: The side wall of the guide plate (5) is provided with a retractable ball head (55), and the groove wall of the slot (11) is provided with a limiting hole for inserting the ball head (55).

6. The positive pressure centralized filter with a cleaning structure according to claim 5, characterized in that: The ball heads (55) are provided at both the front and rear ends of the side wall of the guide plate (5), and the limiting holes correspond to the ball heads (55) in a one-to-one manner.

7. The positive pressure centralized filter with a cleaning structure according to claim 5, characterized in that: A slide rail (6) is installed between the lower end of the guide plate (5) and the slot wall on the lower side of the slot (11).

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