Filter with filter element convenient to disassemble and replace

Abstract

The utility model belongs to the technical field of filter element manufacturing, and particularly relates to a filter with a filter element convenient to disassemble and replace, the filter comprises a shell, the filter element, a locking unit, a pull rope and a cover body, the shell is a cylinder with one open end, the filter element is a cylinder with two open ends, a pipeline is axially arranged in the shell, a first through hole communicated with the pipeline is formed in the end face of the closed end of the shell, and a second through hole communicated with the pipeline is formed in the end face of the closed end of the shell. The filter element is arranged on the pipeline in the shell in a sleeving mode, the locking unit is connected with the end of the pipeline at the open end of the shell in a sealed mode so that the filter element can be locked on the pipeline, a second through hole communicated with the interior of the filter element is formed in the circumferential wall of the pipeline, a pull rope facing the open end of the shell is arranged on the filter element, and a third through hole is formed in the position, away from the first through hole, of the shell. A cover body is arranged at the closed end of the shell; the problems that in the process of maintaining or replacing the filter element, a clamping hand of clamping equipment is difficult to stretch into a gap between the outer circumferential surface of the filter element and the inner circumferential surface of the shell to clamp the filter element, and the filter element is easily damaged by clamping are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of filter element manufacturing, and particularly relates to a filter facilitating dismounting and replacing of a filter element. BACKGROUND

[0002] A filter is an indispensable device on a medium conveying pipeline, and is usually installed at a pressure reducing valve, a pressure relief valve and a constant water level valve. The filter mainly comprises a cylinder and a filter element. After water, oil or gas to be treated passes through the filter element of the filter, impurities are blocked, so that water, oil or gas without or with few impurities is obtained. In a cylindrical filter, the shell of the filter and the filter element located in the shell are both cylindrical. Therefore, after the filter element is fixed in the shell, the filter element is not easy to be taken out during replacement and maintenance. One of the reasons is that the gap between the outer circumferential surface of the filter element and the inner circumferential surface of the shell is relatively small, so the clamping hand of a clamping device is difficult to extend into the gap between the outer circumferential surface of the filter element and the inner circumferential surface of the shell to clamp the filter element. Another reason is that even if the clamping hand of the clamping device is difficult to extend into the gap between the outer circumferential surface of the filter element and the inner circumferential surface of the shell, the filter element is easy to be clamped and damaged during clamping of the filter element because the contact area between the filter element and the clamping hand is relatively small. CONTENT OF THE UTILITY MODEL

[0003] The application aims at the defects of the prior art, adopts a mode of setting a locking unit in the shell and a pull rope on the filter element, designs a filter facilitating dismounting and replacing of a filter element, and solves the problems that the filter element is difficult to be clamped and damaged during clamping of the filter element because the contact area between the filter element and the clamping hand is relatively small, and the gap between the outer circumferential surface of the filter element and the inner circumferential surface of the shell is relatively small.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0005] The filter facilitating dismounting and replacing of a filter element comprises a shell, a filter element, a locking unit, a pull rope and a cover. The shell is a cylindrical shell with an open end. The filter element is a cylindrical filter element with open ends. A pipeline is axially arranged in the shell. The pipeline is fixedly connected to the closed end of the shell. A first through hole is arranged on the end face of the closed end of the shell and is in communication with the pipeline. The filter element is sleeved on the pipeline in the shell. The locking unit is in close connection with the end of the pipeline at the open end of the shell, so that the filter element is locked on the pipeline. A second through hole is arranged on the circumferential wall of the pipeline and is in communication with the inside of the filter element. The pull rope is arranged on the filter element and faces the open end of the shell. A third through hole is arranged on the shell and is away from the first through hole. The cover is arranged on the closed end of the shell.

[0006] Preferably, the pipeline is coaxial with the shell, and the filter core is coaxial with the shell.

[0007] Preferably, the locking unit comprises a screw rod and a sealing ring, an inner thread matched with the screw rod is arranged on the end of the pipeline facing the opening of the shell, the screw rod is inserted into the pipeline and matched with the inner thread after being inserted into the filter core from the end of the pipeline facing the opening of the shell, a limiting cap is arranged on the end of the screw rod outside the filter core, and the sealing ring is arranged on the screw rod on the side of the limiting cap facing the filter core, and the two sides of the sealing ring are respectively tightly abutted against the filter core and the limiting cap.

[0008] Preferably, the limiting cap is coaxially arranged on the screw rod, a through hole A is radially arranged on the screw rod, a through hole B is radially arranged on the limiting cap, the through hole A is coaxial with the through hole B when the locking unit locks the filter core, and a limiting pin is inserted into the through hole A and the through hole B from outside the limiting cap.

[0009] Preferably, a plurality of second through holes are arranged on the circumferential wall of the pipeline.

[0010] Preferably, at least two third through holes are arranged on the shell.

[0011] Preferably, a gap is arranged between the side of the locking unit away from the closed end of the shell and the cover, and a fourth through hole is arranged on the cover.

[0012] Preferably, a rope ring is arranged in the shell between the closed end of the shell and the filter core, the diameter of the rope ring is smaller than the outer diameter of the filter core, the rope ring is connected with two pull ropes, both ends of each pull rope are connected with the rope ring, and the midpoint between the two ends of the pull rope is located between the filter core and the cover.

[0013] Preferably, the four connection points of the end of the pull rope and the rope ring are uniformly distributed on the rope ring.

[0014] Preferably, the rope ring is fixedly connected with the end of the filter core in a coaxial manner, part of the side wall of the pull rope is fixedly connected with the side wall of the filter core, and the part of the pull rope fixedly connected with the side wall of the filter core is parallel to the central axis of the filter core.

[0015] Compared with the prior art, the application has the following beneficial effects:

[0016] 1、The application adopts the way of setting locking unit in the shell and setting pull rope on the filter core, and designs a filter convenient for disassembling and replacing filter core, solves the problem that in the process of maintaining or replacing filter core, the clamping hand of clamping equipment is difficult to stretch into the gap between the outer circumferential surface of filter core and the inner circumferential surface of shell to clamp filter core, and in the process of clamping filter core, the contact area between filter core and clamping hand is small, so the filter core is easy to be clamped broken.

[0017] 2、In the application, the screw rod cooperates with the internal thread of the pipeline to realize the sealing of the end of the pipeline, and the setting of the limiting cap is to prevent the filter core from falling off from the one end of the pipeline towards the opening of the shell. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the external structure schematic diagram of the application;

[0019] Figure 2 It is the structure schematic diagram of the back; Figure 1

[0020] Figure 3 It is the cross-sectional view of the application;

[0021] Figure 4 It is the schematic diagram of the pull rope provided on the filter core in the application;

[0022] Figure 5 It is the relationship diagram of the pull rope and the pipeline in the shell in the application.

[0023] In the figure: 1, shell; 2, filter core; 3, pull rope; 4, cover; 5, pipeline; 6, first through hole; 7, second through hole; 8, third through hole; 9, screw rod; 10, sealing ring; 11, limiting cap; 12, limiting pin; 13, fourth through hole; 14, rope ring. DETAILED DESCRIPTION

[0024] As Figures 1-5 ​As shown, a filter with filter core convenient to dismount and replace, comprising a shell 1, a filter core 2, a locking unit, a pull rope 3, a cover 4, the shell 1 is a cylindrical with one end open, the filter core 2 is a cylindrical with two ends open, the shell 1 is provided with a pipeline 5 axially, the pipeline 5 is fixedly connected with the closed end of the shell 1, the end face of the closed end of the shell 1 is provided with a first through hole 6 communicated with the pipeline 5, the filter core 2 is sleeved on the pipeline 5 in the shell 1, the locking unit is closed connected with the end of the pipeline 5 at the open end of the shell 1 so as to lock the filter core 2 on the pipeline 5, the circumferential wall of the pipeline 5 is provided with a second through hole 7 communicated with the inside of the filter core 2, the filter core 2 is provided with the pull rope 3 towards the open end of the shell 1, the shell 1 is provided with a third through hole 8 away from the first through hole 6, the closed end of the shell 1 is provided with the cover 4.

[0025] In this embodiment, if the first through hole 6 is used for the liquid or gas flowing into the filter core 2, the liquid or gas enters into the pipeline 5 through the first through hole 6, then enters into the filter core 2 through the second through hole 7, and the filtered liquid or gas flows out of the shell 1 through the third through hole 8. The filter core 2 is a cylindrical structure with two ends open (generally, the filter core 2 is such a structure), when installing the filter core 2, the filter core 2 is put into the shell 2 from the open end of the shell 1 and is ensured to be sleeved on the pipeline 2, so that the filter core 2 abuts against the inside of the closed end of the shell 1 towards the closed end of the shell 1, then the locking unit is inserted into the filter core 2 at the open end of the shell 1 and is connected with the pipeline 5, at the same time, the locking unit is closed connected with the inner surface of the filter core 2, so that the filter core 2 is locked on the pipeline 5 and the pipeline 5 towards the open end of the shell 1 is closed, then the cover 4 is closed on the shell 1. When dismounting, after the cover 4 is opened, since the pull rope 3 is provided on the filter core 2 and the pull rope 3 is towards the open end of the shell 1, the maintainer can pull out the filter core 2 from the shell 1 by pulling the pull rope 3, so that the filter core is not easily damaged due to the small contact area between the filter core and the clamping hand in the process of clamping the filter core by the clamping hand through the small gap between the outer circumferential surface of the filter core and the inner circumferential surface of the shell.

[0026] As a preferred mode, the pipeline 5 is coaxial with the shell 1, and the filter core 2 is coaxial with the shell 1. Such a setting mode makes the force received by the filter core 2 balanced and not easy to be damaged.

[0027] As a preferred mode, as shown in the accompanying drawings, Figure 3As shown, the locking unit comprises a screw rod 9, a sealing ring 10, the pipe 5 is provided with an inner thread at the end of the opening of the shell 1, the screw rod 9 is inserted into the pipe 5 from the end of the opening of the shell 1 to the pipe 5 and matched with the inner thread, the end of the screw rod 9 outside the filter core 2 is provided with a limiting cap 11, the sealing ring 10 is sleeved on the screw rod 9 at the side of the limiting cap 11 towards the filter core 2, and the two sides of the sealing ring 10 are tightly closed to the filter core 2 and the limiting cap 11 respectively. After the above setting, the screw rod 9 is matched with the inner thread of the pipe 5 to realize the sealing of the end of the pipe 5, and the limiting cap 11 is arranged to prevent the filter core 2 from falling off from the end of the pipe 5 towards the opening of the shell 1.

[0028] As a preferred mode, the limiting cap 11 is coaxially sleeved on the screw rod 9, the screw rod 9 is radially provided with a through hole A, the limiting cap 11 is radially provided with a through hole B, the through hole A is coaxial with the through hole B when the locking unit locks the filter core 2, and the limiting pin 12 is inserted into the through hole A and the through hole B from the outside of the limiting cap 11. After the above setting, the limiting pin 12 is arranged to prevent the limiting cap 11 from falling off from the pipe 5; when it is needed to take down the filter core 2 from the pipe 5, the limiting pin 12 is first pulled out of the limiting cap 11, and then the limiting cap 11 is taken down from the pipe 5, so that the limiting of the limiting cap 11 to the filter core 2 is released, and the filter core 2 is conveniently taken down from the pipe 5.

[0029] As a preferred mode, the circumferential wall of the pipe 5 is provided with a plurality of second through holes 7. The plurality of second through holes 7 are arranged to facilitate the liquid or gas in the filter core 2 to enter the pipe 5 or facilitate the liquid or gas in the pipe 5 to enter the filter core 2.

[0030] As a preferred mode, the shell 1 is provided with at least two third through holes 8. By arranging a plurality of third through holes 8, a plurality of liquid sources or gas sources which need to be filtered can be simultaneously connected to the shell 1.

[0031] As a preferred mode, a gap is provided between the side of the locking unit away from the closed end of the shell 1 and the cover 4, and the cover 4 is provided with a fourth through hole 13. The above arrangement increases the number of liquid sources or gas sources which need to be filtered and can be simultaneously connected to the shell 1.

[0032] As a preferred mode, as shown in Figure 4 and Figure 5As shown, the rope loop 14 is arranged in the housing 1 between the closed end of the housing 1 and the filter core 2, the diameter of the rope loop 14 is smaller than the outer diameter of the filter core 2, the rope loop 14 is connected to two pull ropes 3, two ends of each pull rope 3 are connected to the rope loop 14, and the midpoint between the two ends of the pull rope 3 is located between the filter core 2 and the cover 4. After such arrangement, when disassembling, the force provided by the pull rope 3 can start from the end of the filter core 2 away from the opening of the housing 1, the contact area between the filter core 2 and the pull rope 3 is increased, and the situation that the connection between the pull rope 3 and the filter core 2 is pulled off is avoided.

[0033] As a preferred mode, the four connection points of the end of the pull rope 3 and the rope loop 14 are uniformly distributed on the rope loop 14.

[0034] As a preferred mode, the rope loop 14 is coaxially fixedly connected to the end of the filter core 2, part of the side wall of the pull rope 3 is fixedly connected to the side wall of the filter core 2, and the part of the pull rope 3 fixedly connected to the side wall of the filter core 2 is parallel to the central axis of the filter core 2. Such arrangement mode makes there be enough contact area between the filter core 2 and the pull rope 3, increases the stress points on the filter core 2, and avoids damaging the filter core 2 in the process of pulling the pull rope 3.

Claims

1. A filter with an easily removable and replaceable filter element, characterized in that, The system includes a housing (1), a filter element (2), a locking unit, a pull rope (3), and a cover (4). The housing (1) is a cylindrical shape with one open end, and the filter element (2) is a cylindrical shape with both open ends. An axially arranged pipe (5) is provided inside the housing (1), and the pipe (5) is fixedly connected to the closed end of the housing (1). A first through hole (6) communicating with the pipe (5) is provided on the end face of the closed end of the housing (1). The filter element (2) is sleeved on the pipe (5) inside the housing (1). The locking unit is sealed to the end of the pipe (5) at one end of the opening of the housing (1) to lock the filter element (2) onto the pipe (5). The circumferential wall of the pipe (5) is provided with a second through hole (7) communicating with the interior of the filter element (2). The filter element (2) is provided with a pull rope (3) facing the opening end of the housing (1). The housing (1) is provided with a third through hole (8) away from the first through hole (6). The cover (4) is provided at the closed end of the housing (1).

2. The filter with easily removable and replaceable filter element according to claim 1, characterized in that, The pipe (5) is coaxial with the housing (1), and the filter element (2) is coaxial with the housing (1).

3. A filter with an easily removable and replaceable filter element according to claim 1, characterized in that, The locking unit includes a screw (9) and a sealing ring (10). One end of the pipe (5) facing the opening of the housing (1) is provided with an internal thread that mates with the screw (9). The screw (9) extends from the end of the pipe (5) facing the opening of the housing (1) into the filter element (2) and then inserts into the pipe (5) to mate with the internal thread. One end of the screw (9) outside the filter element (2) is provided with a limiting cap (11). The sealing ring (10) is fitted on the side of the screw (9) facing the limiting cap (11) towards the filter element (2). The two sides of the sealing ring (10) respectively seal against the filter element (2) and the limiting cap (11).

4. A filter with an easily removable and replaceable filter element according to claim 3, characterized in that, The limiting cap (11) is coaxially sleeved on the screw (9). The screw (9) has a radial through hole A and the limiting cap (11) has a radial through hole B. When the locking unit locks the filter element (2), the through hole A and the through hole B are coaxial, and the limiting pin (12) is inserted into the through hole A and the through hole B from outside the limiting cap (11).

5. A filter with an easily removable and replaceable filter element according to claim 1, characterized in that, The circumferential wall of the pipe (5) is provided with several second through holes (7).

6. A filter with an easily removable and replaceable filter element according to claim 1, characterized in that, The housing (1) is provided with at least two of the third through holes (8).

7. A filter with an easily removable and replaceable filter element according to claim 1, characterized in that, The locking unit has a preset gap between the side facing away from the closed end of the housing (1) and the cover (4), and the cover (4) is provided with a fourth through hole (13).

8. A filter with an easily removable and replaceable filter element according to claim 1, characterized in that, The housing (1) has a rope loop (14) between the closed end of the housing (1) and the filter element (2). The diameter of the rope loop (14) is smaller than the outer diameter of the filter element (2). The rope loop (14) connects two pull ropes (3). Both ends of each pull rope (3) are connected to the rope loop (14). The midpoint between the two ends of the pull rope (3) is located between the filter element (2) and the cover (4).

9. A filter with an easily removable and replaceable filter element according to claim 8, characterized in that, The four connection points between the end of the pull rope (3) and the rope loop (14) are evenly distributed on the rope loop (14).

10. A filter with an easily removable and replaceable filter element according to any one of claims 8 or 9, characterized in that, The rope loop (14) is coaxially fixedly connected to the end of the filter element (2), a portion of the side wall of the pull rope (3) is fixedly connected to the side wall of the filter element (2), and the portion of the pull rope (3) fixedly connected to the side wall of the filter element (2) is parallel to the central axis of the filter element (2).

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