A vacuum filter

Abstract

The utility model provides a kind of vacuum filter, belong to vacuum filter technical field.It solves the problem of the existing filter multiple filter screen cannot be replaced individually.This vacuum filter, including the shell of hollow tubular, coarse filter screen and fine filter screen are arranged in shell, the left and right ends of shell can be detachably connected with the end cap that can close the port of both ends of shell, the middle part of shell is fixedly connected with mounting ring, the left and right ends of mounting ring are connected with the above coarse filter screen and fine filter screen respectively, the middle part of mounting ring has the opening that can be used for medium flow, the inlet is opened in the upper end of coarse filter screen in shell, the outlet is opened in the upper end of fine filter screen in shell.The filter screen of this vacuum filter can be individually disassembled and cleaned, and the efficiency of cleaning and replacement is improved.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum filter technology and relates to a vacuum filter. Background Technology

[0002] A vacuum filter creates a pressure lower than atmospheric pressure inside the filter chamber using a vacuum system. Under the pressure difference between atmospheric pressure and vacuum negative pressure, the liquid in the suspension passes through the pores of the filter screen and enters the filtrate collection system, while solid particles are trapped in the filter screen.

[0003] Prolonged use can cause filter screen pores to become clogged, so the filter screen needs to be removed and replaced or cleaned frequently. Existing vacuum filters, such as the high-precision vacuum oil filter disclosed in Chinese patent application [Authorization Announcement No.: CN104014189B], include an oil inlet system, a heating system, a vacuum processing system, an oil outlet system, and a precision filtration system connected in sequence. The oil inlet system includes an oil inlet valve, a coarse filter, an oil inlet pump, and an oil inlet check valve. The vacuum processing system includes a bipolar vacuum separation chamber and a condenser, a Roots pump, a high-vacuum solenoid valve, and a vacuum pump connected in sequence. The oil outlet system includes an oil outlet pump and an oil outlet check valve. The precision filtration system... The treatment system includes several stages of precision filters. The oil inlet valve of the oil inlet system is connected to the oil storage tank to be treated, and the oil inlet check valve is connected to the heating system. The output end of the heating system is connected to the bipolar vacuum separation chamber of the vacuum treatment system. The separated water vapor is transported to the condensation device, and discharged after appropriate treatment. The separated oil is transported to the precision filtration treatment system through the oil outlet system for fine filtration. Finally, it is output to the oil storage tank to be treated through the oil outlet valve. The precision filter includes a housing, a filter element located inside the housing and connected to the housing at both the top and bottom ends, the filter element surrounding the fine filtration tube, and a sealed rotating core sleeve on the outside of the filter element. The bottom of the rotating core sleeve is mounted on the housing through a rotating shaft.

[0004] The above structure uses a filter element, a fine filter tube, and a rotating core sleeve for filtration. When cleaning and replacing these components, the filter element, fine filter tube, and rotating core sleeve must be removed simultaneously. Since the filtration process involves a first pass through the fine filter tube followed by a second pass through the rotating core sleeve, and because there are fewer impurities during the second pass, the rotating core sleeve does not require frequent replacement or cleaning. However, the above structure requires all three components to be removed and cleaned simultaneously, making it impossible to remove and clean them individually, which affects the replacement efficiency of the filter components within the filter. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a vacuum filter. The technical problem this invention aims to solve is: how to resolve the issue that multiple filter screens in existing filters cannot be replaced individually.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A vacuum filter includes a hollow tubular housing, within which a coarse filter and a fine filter are disposed. The housing is characterized in that end caps capable of sealing both ends of the housing are detachably connected to both sides; a mounting ring is fixedly connected to the middle of the housing; the left and right ends of the mounting ring are respectively connected to the coarse and fine filter; the middle of the mounting ring has an opening for media flow; an inlet is provided at the upper end of the coarse filter, and an outlet is provided at the upper end of the fine filter.

[0008] The vacuum filter features detachable end caps at both ends of the housing and a mounting ring fixed in the middle. Coarse and fine filters are mounted on the left and right ends of the mounting ring, respectively. An opening is located in the middle of the mounting ring. The medium filtered by this vacuum filter is typically dust. Dust enters the housing through the inlet, with finer dust particles passing through the pores of the coarse filter. The outlet of the housing has a strong suction force, causing the dust from the coarse filter to pass through the opening into the fine filter for secondary filtration. The filtered dust then passes through the pores of the fine filter and flows out from the outlet, completing the secondary filtration of the medium. By incorporating both coarse and fine filters, the pressure drop is reduced, making the filters less prone to clogging, extending their lifespan, and increasing filtration efficiency. Furthermore, since both ends of the housing have detachable end caps, replacing either the coarse or fine filter is as simple as opening the corresponding end cap and removing it from the mounting ring. This allows for individual removal of both filters, enhancing the convenience of individual replacement. In practical use, if one filter becomes clogged, only that one needs to be replaced and cleaned, improving cleaning and replacement efficiency.

[0009] The ends of the coarse and fine filter screens can be bolted to the mounting ring. During installation and removal, the bolts can be removed directly, or a detachable connection can be achieved by using elastic snap-fit.

[0010] In the aforementioned vacuum filter, one end of the mounting ring is fixedly connected to multiple support rods, one end of the coarse filter screen is open and sleeved on the support rods, and the inner sidewall of the coarse filter screen abuts against the support rods. The end of the support rod away from the mounting ring has a positioning end that abuts against the inner end face of the coarse filter screen.

[0011] By using multiple support rods, the coarse filter screen can be quickly connected to the mounting ring via a sleeve connection. The support rods also provide circumferential support for the coarse filter screen, which facilitates subsequent replacement and cleaning of the screen and improves replacement efficiency.

[0012] In the aforementioned vacuum filter, multiple positioning ends are welded together, and positioning rods are fixedly connected to the welded joints of the multiple positioning ends. A positioning hole is provided on the end face of the coarse filter screen away from the mounting ring, allowing the positioning rods to be inserted.

[0013] To facilitate the positioning of the coarse filter screen, a positioning rod and a positioning hole are used to prevent radial displacement at the end of the coarse filter screen. This ensures that the coarse filter screen is easy to install and remove while improving the stability of its positioning.

[0014] In the aforementioned vacuum filter, the other end of the mounting ring is fixedly connected to multiple support rods 2. One end of the fine filter screen is open and sleeved on the support rod 2, with the inner sidewall of the fine filter screen abutting against the support rod 2. The end of the support rod 2 away from the mounting ring has a limiting end that abuts against the inner end face of the fine filter screen.

[0015] By using multiple support rods, the fine filter screen can be quickly connected to the mounting ring via a sleeve connection. The support rods also provide circumferential support for the fine filter screen, which facilitates subsequent replacement and cleaning of the fine filter screen and improves replacement efficiency.

[0016] In the aforementioned vacuum filter, multiple limiting ends are welded together, and limiting rods are fixedly connected to the welded joints of the multiple limiting ends. A limiting hole is provided on the end face of the fine filter screen away from the mounting ring, allowing the limiting rods to be inserted.

[0017] To facilitate the positioning of the fine filter screen, a limiting rod and a limiting hole are used to prevent radial displacement at the end of the fine filter screen, which not only ensures convenient installation and removal of the fine filter screen but also improves the stability of the fine filter screen positioning.

[0018] In the vacuum filter described above, the housing and the end cap are hinged together by a door hinge. A door latch is hinged to the end of the housing. The end of the housing has an annular retaining ring. The end of the end cap has an annular positioning ring. The door latch has a positioning groove for the retaining ring and the positioning ring to be inserted. A positioning rod is threaded onto the door latch to press the positioning ring onto the retaining ring.

[0019] By hinged to one side of the housing and end cap via a door hinge, when the end cap needs to be opened, the positioning rod on the door latch is simply rotated outward, the door latch swings until the positioning ring and retaining ring are outside the positioning groove, and then the other side of the end cap is pulled outward, thus realizing the quick opening and closing of the end cap and improving the replacement efficiency of fine and coarse filters.

[0020] Compared with existing technologies, this vacuum filter has the following advantages: By incorporating both coarse and fine filters, the pressure drop is reduced, making the filters less prone to clogging, extending the filter's lifespan, and increasing filtration efficiency. Furthermore, since end caps are detachably connected to both ends of the housing, replacing either the coarse or fine filter is as simple as opening the corresponding end cap and removing it from the mounting ring. Both can be removed individually, improving the convenience of individual replacement. In practical use, if one filter becomes clogged, only that one needs to be replaced and cleaned, improving cleaning and replacement efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a top view of the present invention.

[0023] Figure 3 yes Figure 2 Sectional view of AA.

[0024] Figure 4 This is a partial structural schematic diagram of the present invention.

[0025] In the diagram, 1. Housing; 11. Mounting ring; 11a. Opening; 12. Inlet; 13. Outlet; 14. Retaining ring; 2. Coarse filter screen; 21. Positioning hole; 3. Fine filter screen; 31. Limiting hole; 4. End cap; 41. Positioning ring; 5. Support rod one; 51. Positioning end; 52. Positioning rod; 6. Support rod two; 61. Limiting end; 62. Limiting rod; 7. Door hinge; 8. Door latch; 81. Positioning groove; 9. Pressure rod. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figure 1 and Figure 3 As shown, this vacuum filter includes a hollow tubular housing 1, inside which a coarse filter screen 2 and a fine filter screen 3 are disposed.

[0028] Specifically, such as Figure 1-3As shown, both the left and right ends of the housing 1 are detachably connected to end caps 4 that can close the ports of both ends of the housing 1. A mounting ring 11 is fixedly connected to the middle of the housing 1. The left and right ends of the mounting ring 11 are respectively connected to the coarse filter screen 2 and the fine filter screen 3. The middle of the mounting ring 11 has an opening 11a for the flow of the medium. The housing 1 has an inlet 12 at the upper end of the coarse filter screen 2 and an outlet 13 at the upper end of the fine filter screen 3.

[0029] The vacuum filter is equipped with end caps detachably connected to both ends of the housing 1. An mounting ring 11 is fixedly connected to the middle of the housing 1. A coarse filter 2 and a fine filter 3 are respectively installed at the left and right ends of the mounting ring 11. An opening 11a is provided in the middle of the mounting ring 11. The medium filtered by this vacuum filter is typically dust. Dust enters the housing 1 through the inlet 12, and finer dust particles pass through the pores of the coarse filter 2. The outlet 13 of the housing 1 has a strong suction force, causing the dust from the coarse filter 2 to pass through the opening 11a into the fine filter 3 for secondary filtration. The filtered dust can then pass through the pores of the fine filter 3 and flow out through the outlet 13, completing the filtration process. The secondary filtration of the medium, through the installation of a coarse filter 2 and a fine filter 3, reduces the pressure drop, making the filter less prone to clogging, extending the service life of the filter, and increasing the filtration effect. Furthermore, since both ends of the housing 1 are detachably connected to end caps 4, when it is necessary to replace the fine filter 3 or the coarse filter 2, it is only necessary to open the corresponding end cap 4 and then remove the fine filter 3 or the coarse filter 2 from the mounting ring 11. Both can be removed separately, thereby improving the convenience of replacing the fine filter 3 and the coarse filter 2 individually. In actual use, if one becomes clogged, only one needs to be replaced and cleaned, improving the efficiency of cleaning and replacement.

[0030] like Figure 2 and Figure 3 As shown, one end of the mounting ring 11 is fixedly connected to multiple support rods 5. One end opening 11a of the coarse filter screen 2 is sleeved on the support rods 5, and the inner sidewall of the coarse filter screen 2 abuts against the support rods 5. The end of the support rods 5 away from the mounting ring 11 has a positioning end 51 that abuts against the inner end face of the coarse filter screen 2. Multiple positioning ends 51 are welded together, and positioning rods 52 are fixedly connected to the weld joints of the multiple positioning ends 51. A positioning hole 21 is provided on the end face of the coarse filter screen 2 away from the mounting ring 11, into which the positioning rods 52 can be inserted.

[0031] like Figure 2-4As shown, multiple support rods 6 are fixedly connected to the other end of the mounting ring 11. One end of the fine filter screen 3 is open 11a and sleeved on the support rod 6, with the inner sidewall of the fine filter screen 3 abutting against the support rod 6. The end of the support rod 6 away from the mounting ring 11 has a limiting end 61 that abuts against the inner end face of the fine filter screen 3. Multiple limiting ends 61 are welded together, and a limiting rod 62 is fixedly connected to the weld of the multiple limiting ends 61. A limiting hole 31 is opened on the end face of the fine filter screen 3 away from the mounting ring 11, into which the limiting rod 62 can be inserted.

[0032] like Figure 1 and Figure 4 As shown, the housing 1 and the end cover 4 are hinged together by a door hinge 7. A door latch 8 is hinged to the end of the housing 1. The end of the housing 1 has an annular retaining ring 14. The end of the end cover 4 has an annular positioning ring 41. The door latch 8 has a positioning groove 81 for the retaining ring 14 and the positioning ring 41 to be inserted. A pressure rod 9 is threadedly connected to the door latch 8 to press the positioning ring 41 onto the retaining ring 14.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A vacuum filter comprising a hollow tubular housing (1), wherein a coarse filter screen (2) and a fine filter screen (3) are disposed within the housing (1), characterized in that, Both ends of the housing (1) are detachably connected to end caps (4) that can close the ports of both ends of the housing (1). A mounting ring (11) is fixedly connected to the middle of the housing (1). The left and right ends of the mounting ring (11) are respectively connected to the coarse filter screen (2) and the fine filter screen (3). The middle of the mounting ring (11) has an opening (11a) for the flow of the medium. The housing (1) has an inlet (12) at the upper end of the coarse filter screen (2) and an outlet (13) at the upper end of the fine filter screen (3).

2. The vacuum filter according to claim 1, characterized in that, One end of the mounting ring (11) is fixedly connected to multiple support rods (5). One end opening (11a) of the coarse filter (2) is sleeved on the support rod (5) and the inner sidewall of the coarse filter (2) abuts against the support rod (5). The end of the support rod (5) away from the mounting ring (11) has a positioning end (51) that abuts against the inner end face of the coarse filter (2).

3. The vacuum filter according to claim 2, characterized in that, Multiple positioning ends (51) are welded together, and positioning rods (52) are fixedly connected to the welded joints of the multiple positioning ends (51). The coarse filter screen (2) has a positioning hole (21) on the end face away from the mounting ring (11) for the positioning rods (52) to be inserted.

4. The vacuum filter according to claim 1, 2, or 3, characterized in that, The other end of the mounting ring (11) is fixedly connected to multiple support rods (6). One end of the fine filter (3) is open (11a) and sleeved on the support rods (6), and the inner sidewall of the fine filter (3) abuts against the support rods (6). The end of the support rods (6) away from the mounting ring (11) has a limiting end (61) that abuts against the inner end face of the fine filter (3).

5. The vacuum filter according to claim 4, characterized in that, Multiple limiting ends (61) are welded together, and a limiting rod (62) is fixedly connected to the weld of the multiple limiting ends (61). A limiting hole (31) is provided on the end face of the fine filter screen (3) away from the mounting ring (11) for the limiting rod (62) to be inserted.

6. The vacuum filter according to claim 1, 2, or 3, characterized in that, The housing (1) is hinged to one side of the end cap (4) via a door hinge (7). A door latch (8) is hinged to the end of the housing (1). The end of the housing (1) has an annular retaining ring (14). The end of the end cap (4) has an annular positioning ring (41). The door latch (8) has a positioning groove (81) into which the retaining ring (14) and the positioning ring (41) can be inserted. A pressure rod (9) is threadedly connected to the door latch (8) to press the positioning ring (41) onto the retaining ring (14).

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