Security filter convenient for replacing filter element

Abstract

The utility model provides a security filter convenient for replacing a filter element, which comprises a shell, support legs fixedly connected to the outer side of the shell, a sealing cover arranged at the top of the shell, a fixed block fixedly connected to the inner wall of the shell, a screen plate arranged at the top of the fixed block, and a flange fixedly connected to the top of the screen plate, a filter element pipe is arranged at the top of the flange, one side of the shell is communicated with a water inlet pipe, the bottom of the shell is communicated with a drainage pipe, and mounting holes are formed in the flange and the filter element pipe; and the limiting mechanism comprises a limiting groove formed in the top of the flange, and an arc-shaped clamping groove is formed in the inner wall of the limiting groove. The security filter convenient for replacing the filter element provided by the utility model solves the problems that some existing security filters convenient for replacing the filter element are lack of structures for assisting in mounting the filter element pipe, so that the filter element pipe and the flange are not easy to align in the butt joint process, and the mounting efficiency of the filter element pipe is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of security filters, in particular to a security filter with a filter element that is easy to replace. Background Art

[0002] Security filters, also known as precision filters, are widely used in drinking water treatment, circulating water treatment, boiler feed water treatment and sewage treatment. The working principle is that the liquid to be filtered is pressed into the filter inlet, and is filtered into a clear liquid through the filter layer from the outside to the inside through the filter element, and then discharged through the outlet. The filter element needs to be replaced after a period of use.

[0003] According to the utility model patent announced as: CN216677195U, a precision safety filter that is easy to replace the filter element is disclosed, which relates to the field of safety filters. Its beneficial effects are: starting the lifting mechanism drives the top cover to rise vertically and separate from the tank body, and while the top cover rises, the vertical rod drives the sealing ring and the porous plate to rise synchronously until the filter element tube on the porous plate is completely exposed from the tank body. At this time, the bolts connecting the flange and the filter element tube are removed, and the new filter element tube is replaced and tightened to complete the replacement. The operation is convenient and quick.

[0004] The filter tube in the above-mentioned technology is connected to the flange by bolts. However, when installing the filter tube, due to the lack of auxiliary installation structure, the installation holes on the filter tube and the flange are difficult to align during the docking process of the filter tube and the flange, and need to be adjusted by personnel, which reduces the efficiency of the filter tube installation.

[0005] Therefore, it is necessary to provide a new safety filter that is convenient to replace filter element to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of the utility model is to provide a safety filter which is convenient for replacing the filter element, so as to solve the problems raised in the above-mentioned background technology.

[0007] The utility model provides a safety filter which is easy to replace the filter element, comprising a shell, the outer side of the shell is fixedly connected with a supporting leg, the top of the shell is provided with a sealing cover, the inner wall of the shell is fixedly connected with a fixing block, the top of the fixing block is provided with a mesh plate, the top of the mesh plate is fixedly connected with a flange, the top of the flange is provided with a filter element tube, one side of the shell is connected with a water inlet pipe, the bottom of the shell is connected with a drain pipe, and the flange and the filter element tube are both provided with mounting holes; a limiting mechanism, the limiting mechanism comprises a limiting groove provided at the top of the flange, the inner wall of the limiting groove is provided with an arc-shaped clamping groove, the bottom of the filter element tube is fixedly connected with the limiting block, the inner wall of the limiting block is slidably connected with an arc-shaped clamping block, the number of the arc-shaped clamping blocks is two, and one side of the arc-shaped clamping block is fixedly connected with a spring.

[0008] In order to achieve the effect of keeping the arc-shaped block stable when moving, as the utility model provides a safety filter that is easy to replace the filter element, preferably, the limiting mechanism also includes a sliding block fixed to one side of the arc-shaped block, and the inner wall of the limiting block is provided with a sliding groove.

[0009] In order to facilitate the fixing of the sealing cover and the housing, the utility model provides a safety filter for easy replacement of the filter element. Preferably, one side of the housing and the sealing cover are fixedly connected with a mounting block, and the inner wall of the mounting block is threadedly connected with a hand screw.

[0010] In order to achieve the effect of placing the mesh plate, as the utility model provides a safety filter that is easy to replace the filter element, preferably, the inner cavity of the fixed block is provided with positioning holes, and the number of the fixed blocks is four.

[0011] In order to achieve the effect of stabilizing the mesh plate, as the utility model provides a safety filter that is easy to replace the filter element, preferably, the bottom of the mesh plate is fixedly connected with a positioning rod used in conjunction with the positioning hole, and the positioning hole is clamped with the positioning rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The invention relates to a safety filter which is easy to replace the filter element. When installing the filter element tube, with the assistance of a limiting mechanism, the butt connection between the filter element tube and the flange can be quickly completed without the need for personnel adjustment, thereby improving the working efficiency of installing the filter element tube and solving the problem that some existing safety filters which are easy to replace the filter element have the problem that when installing the filter element tube, the installation holes on the filter element tube and the flange are difficult to align, resulting in low installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural schematic diagram of a preferred embodiment of a safety filter for easy replacement of a filter element provided by the utility model;

[0015] Figure 2 It is a schematic diagram of the structure inside the shell of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the middle mesh plate and the filter tube of the utility model;

[0017] Figure 4 for Figure 3 A schematic diagram of the structure enlargement at the center A;

[0018] Figure 5 It is an enlarged schematic diagram of the connection structure between the arc-shaped clamping block and the spring in the utility model.

[0019] Numbers in the figure: 1. outer shell; 2. supporting leg; 3. sealing cover; 4. fixing block; 5. mesh plate; 6. flange; 7. filter element tube; 8. limiting mechanism; 81. limiting groove; 82. arc-shaped slot; 83. limiting block; 84. arc-shaped block; 85. spring; 86. slider; 87. slide groove; 9. water inlet pipe; 10. drain pipe; 11. mounting block; 12. hand screw; 13. positioning hole; 14. positioning rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model. It is understandable that the drawings are only provided for reference and illustration, and are not used to limit the utility model. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of a safety filter for easy replacement of a filter element provided by the utility model; Figure 2 It is a schematic diagram of the structure inside the shell of the utility model; Figure 3 This is a schematic diagram of the structure of the middle screen plate and the filter core tube of the utility model; Figure 4 for Figure 3 A schematic diagram of the structure enlargement at the center A; Figure 5 The utility model is an enlarged schematic diagram of the connection structure of the arc-shaped clamping block and the spring in the utility model. A safety filter for easy replacement of filter elements comprises a housing 1, a support leg 2 is fixedly connected to the outer side of the housing 1, a sealing cover 3 is arranged on the top of the housing 1, a fixed block 4 is fixedly connected to the inner wall of the housing 1, a mesh plate 5 is arranged on the top of the fixed block 4, a flange 6 is fixedly connected to the top of the mesh plate 5, a filter element tube 7 is arranged on the top of the flange 6, a water inlet pipe 9 is connected to one side of the housing 1, a drain pipe 10 is connected to the bottom of the housing 1, a valve is arranged on the outer side of the drain pipe 10, and mounting holes are provided on the flange 6 and the filter element tube 7; a limiting mechanism 8, the limiting mechanism 8 comprises a limiting groove 81 opened on the top of the flange 6, an arc-shaped clamping groove 82 is opened on the inner wall of the limiting groove 81, a limiting block 83 is fixedly connected to the bottom of the filter element tube 7, an arc-shaped clamping block 84 is slidably connected to the inner wall of the limiting block 83, and there are two arc-shaped clamping blocks 84, and a spring 85 is fixedly connected to one side of the arc-shaped clamping block 84.

[0022] The limiting mechanism 8 further includes a sliding block 86 fixed to one side of the arc-shaped clamping block 84 . A sliding groove 87 is formed on the inner wall of the limiting block 83 , and the sliding block 86 is slidably connected to the sliding groove 87 .

[0023] It should be noted that: during installation, the filter element tube 7 is moved so that the limit block 83 at the bottom is inserted into the limit groove 81 at the top of the flange 6. When the limit block 83 is inserted into the limit groove 81, the two arc-shaped blocks 84 are squeezed by the limit groove 81 and move toward the inside of the limit block 83, thereby driving the slider 86 to slide in the slide groove 87. The slider 86 and the slide groove 87 are used in conjunction with each other to make the limit block 83 stable when moving. At this time, the spring 85 is in a compressed state. When the arc-shaped blocks 84 are pressed into the limit groove 81, the two arc-shaped blocks 84 move toward the inside of the limit block 83. When the clamping block 84 is level with the arc-shaped clamping groove 82, the rebound force of the spring 85 can make the arc-shaped clamping block 84 clamped into the arc-shaped clamping groove 82, and complete the docking work between the filter element tube 7 and the flange 6, so that the filter element tube 7 can be aligned with the mounting holes on the flange 6, and then the bolts can be screwed into the mounting holes to complete the fixation of the two. When removing the filter element tube 7, it is only necessary to screw out the bolts, and then pull the filter element tube 7 upward with a little force to make the arc-shaped clamping block 84 disengage from the arc-shaped clamping groove 82.

[0024] In the specific implementation process, Figure 1 and Figure 2 As shown, a mounting block 11 is fixedly connected to one side of the housing 1 and the sealing cover 3 , and a hand screw 12 is threadedly connected to the inner wall of the mounting block 11 .

[0025] It should be noted that: by using the mounting block 11 in conjunction with the hand screw 12, the sealing cover 3 can be conveniently fixed to the housing 1. When the filter tube 7 needs to be disassembled, the hand screw 12 is unscrewed from the mounting block 11, and then the sealing cover 3 is removed, and then the filter tube 7 and the mesh plate 5 are pulled out of the housing 1, which is convenient to operate.

[0026] refer to Figure 2 and Figure 3 As shown, the inner cavity of the fixing block 4 is provided with positioning holes 13, and the number of the fixing blocks 4 is four.

[0027] A positioning rod 14 used in conjunction with the positioning hole 13 is fixedly connected to the bottom of the mesh plate 5 , and the positioning hole 13 is engaged with the positioning rod 14 .

[0028] It should be noted that: after the filter element tube 7 is replaced, the filter element tube 7 is moved to drive the mesh plate 5 to move, so that the positioning rod 14 at the bottom of the mesh plate 5 is inserted into the positioning hole 13 on the fixed block 4, so that the bottom of the mesh plate 5 contacts the top of the fixed block 4. The mesh plate 5 can be stabilized by the coordinated use of the positioning hole 13 and the positioning rod 14.

[0029] The working principle of a safety filter that is easy to replace the filter element provided by the utility model is as follows:

[0030] When in use, unscrew the hand screw 12 from the mounting block 11, then remove the sealing cover 3, then pull the filter tube 7 to remove it and the mesh plate 5 from the housing 1, and then remove the bolts on the flange 6 to disassemble the filter tube 7. During installation, the limiting mechanism 8 is used to facilitate the docking of the filter tube 7 and the flange 6, so that the mounting holes on the two can be quickly aligned without the need for personnel adjustment, which improves the work efficiency of installing the filter tube 7.

[0031] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0032] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A safety filter that is easy to replace the filter element, characterized in that: The invention comprises a shell (1), the outer side of the shell (1) is fixedly connected to a support leg (2), the top of the shell (1) is provided with a sealing cover (3), the inner wall of the shell (1) is fixedly connected to a fixing block (4), the top of the fixing block (4) is provided with a mesh plate (5), the top of the mesh plate (5) is fixedly connected to a flange (6), the top of the flange (6) is provided with a filter tube (7), one side of the shell (1) is connected to a water inlet pipe (9), the bottom of the shell (1) is connected to a drain pipe (10), and both the flange (6) and the filter tube (7) are provided with mounting holes; A limiting mechanism (8), the limiting mechanism (8) comprising a limiting groove (81) provided at the top of the flange (6), an inner wall of the limiting groove (81) being provided with an arc-shaped clamping groove (82), a limiting block (83) being fixedly connected to the bottom of the filter element tube (7), an arc-shaped clamping block (84) being slidably connected to the inner wall of the limiting block (83), two arc-shaped clamping blocks (84) being provided, and a spring (85) being fixedly connected to one side of the arc-shaped clamping block (84).

2. The safety filter for easy replacement of filter element according to claim 1, characterized in that: The limiting mechanism (8) further comprises a sliding block (86) fixed to one side of the arc-shaped clamping block (84), and a sliding groove (87) is provided on the inner wall of the limiting block (83).

3. The safety filter for easy replacement of filter element according to claim 1, characterized in that: A mounting block (11) is fixedly connected to one side of the housing (1) and the sealing cover (3), and a hand screw (12) is threadedly connected to the inner wall of the mounting block (11).

4. The safety filter for easy replacement of filter element according to claim 1, characterized in that: The inner cavity of the fixing block (4) is provided with positioning holes (13), and the number of the fixing blocks (4) is four.

5. The safety filter for easy replacement of filter element according to claim 4, characterized in that: A positioning rod (14) used in conjunction with the positioning hole (13) is fixedly connected to the bottom of the mesh plate (5), and the positioning hole (13) is snap-fitted to the positioning rod (14).

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