CN215831178U

CN215831178U - Precise combined filter

Info

Publication number: CN215831178U
Application number: CN202122304416.0U
Authority: CN
Inventors: 杨景程; 杨选辰; 杨选浩
Original assignee: Zhejiang Diantai Valve Industry Co ltd
Current assignee: Zhejiang Diantai Valve Industry Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-15
Anticipated expiration: 2031-09-23

Abstract

The utility model relates to the field of filters, in particular to a precision combined filter, which comprises a valve body, wherein a medium flow channel is arranged in the valve body, the upper end of the valve body is fixedly provided with a valve cover through a bolt, the top end of the valve cover is fixedly provided with a valve rod nut, a valve rod is arranged in the valve rod nut, the top end of the valve rod is provided with a hand wheel through the locking of the hand wheel nut, the bottom end of the valve rod is fixedly provided with a movable adjusting filter screen, and the interior of the valve body is fixedly provided with a filter screen positioned on the outer ring of the movable adjusting filter screen; the way has designed 3 layers of filter screens in the valve body, and the mesh number of three-layer filter screen increases gradually, wherein inlayer filter screen is connected with the valve rod, when the operating mode does not need the precision to strain, the accessible valve rod is opened inlayer filter screen, make it out of work, only carry out coarse filtration through two-layer filter screen in the outside, accessible is closed inlayer filter screen with the valve rod when the operating mode needs precision to strain, makes it begin filtering work, thereby can be according to operating mode needs, the filter fineness of quick adjustment filter.

Description

Precise combined filter

Technical Field

The utility model relates to the field of filters, in particular to a precise combined filter.

Background

The filter is an indispensable device on a medium conveying pipeline and is usually arranged at the inlet end of a pressure reducing valve, a pressure relief valve, a constant water level valve and other equipment of a squaring filter. The filter consists of a cylinder body, a stainless steel filter screen, a pollution discharge part, a transmission device and an electric control part. After water to be treated passes through the filter cylinder of the filter screen of the filter, impurities are blocked, when the water is required to be cleaned, the detachable filter cylinder is taken out, and the water is treated and then is filled in again, so that the water treatment device is very convenient to use and maintain. The mesh size of filter screen generally can't directly be adjusted in the present filter, when the filter fineness to the pipeline medium need be changed, need the dismouting to change the filter screen or directly change the filter for the use of filter is convenient inadequately.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a precision combined filter, which can solve the technical problem that the mesh size of a filter screen in the existing filter can not be directly adjusted, and when the filtering precision of a pipeline medium needs to be changed, the filter screen of the filter needs to be disassembled and replaced or the filter needs to be directly replaced, so that the use of the filter is not convenient enough.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a precise combination filter, includes the valve body, be provided with the medium runner in the valve body, there is the valve gap upper end of valve body through bolt fixed mounting, the top fixed mounting of valve gap has valve rod nut, the valve rod is installed to the valve rod nut internal thread, the hand wheel is installed through hand wheel nut locking in the top of valve rod, the lower extreme of valve rod extends to the inside of valve body, just the bottom fixed mounting of valve rod has the removal to adjust the filter screen, be equipped with on the medium runner in the valve body with the sealed slotted hole of pegging graft of removal regulation filter screen, the inside fixed mounting of valve body has and is located the filter screen of removal regulation filter screen outer lane.

As a preferable technical scheme of the utility model, a winding gasket is hermetically installed at a joint of the valve body and the valve cover.

As a preferred technical scheme of the utility model, the filter screen is of a double-layer cylindrical structure, the mesh number of the filter screen is gradually increased from the outside to the inside, and meanwhile, the mesh number of the movable adjusting filter screen is larger than that of the filter screen.

As a preferred technical scheme of the utility model, the upper end of the valve cover is provided with a packing groove positioned on the outer ring of the valve rod, a lower packing and an upper packing are sequentially filled in the packing groove from bottom to top, the top end of the packing groove is provided with a packing pressing sleeve sleeved on the valve rod, and the top end of the packing pressing sleeve is provided with a packing pressing plate.

As a preferred technical scheme of the utility model, the packing pressing plate is provided with a loose joint bolt, the lower end of the loose joint bolt is movably connected with the valve cover through a pin, and the upper end of the loose joint bolt is locked and fixed with the packing pressing plate through a hexagon nut.

As a preferable technical scheme of the utility model, a limiting plate positioned below the hand wheel is fixedly arranged on the outer ring of the valve rod nut.

The utility model has the beneficial effects that:

according to the precision combined filter, 3 layers of filter screens are designed in the valve body, the mesh number of the three layers of filter screens is gradually increased, wherein the innermost filter screen is connected with the valve rod, when the precision filtration is not needed under the working condition, the innermost filter screen can be opened through the valve rod and does not work, only the outer two layers of filter screens are used for rough filtration, when the precision filtration is needed under the working condition, the innermost filter screen can be closed through the valve rod and starts to filter, so that the filtration precision of the filter can be quickly adjusted according to the working condition, and when the precision filtration is carried out, the outer two filter screens are firstly used for rough filtration to intercept impurities with larger volume, so that the precision filter screen on the third layer can be protected, and the service life of the precision filter screen is prolonged; the limiting plate is arranged below the hand wheel, the position of the precision filter screen in use can be limited and marked, and the precision filter screen is prevented from being excessively closed and damaged.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of the present invention;

in the figure: 1. a valve body; 2. a valve cover; 3. moving and adjusting the filter screen; 4. a valve stem; 5. a filter screen; 6. winding the gasket; 7. lower filling; 8. filling; 9. a bolt; 10. a hand wheel nut; 11. loose joint bolts; 12. a pin; 13. a hexagonal nut; 14. pressing and sleeving the filler; 15. a packing press plate; 16. a valve stem nut; 17. a hand wheel; 18. and a limiting plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1, the precision combined filter provided by the utility model comprises a valve body 1, wherein a medium flow channel is arranged in the valve body 1, a valve cover 2 is fixedly installed at the upper end of the valve body 1 through a bolt, a valve rod nut 16 is fixedly installed at the top end of the valve cover 2, a valve rod 4 is installed in the valve rod nut 16 through internal threads, a hand wheel 17 is installed at the top end of the valve rod 4 through a hand wheel nut 10 in a locking manner, the lower end of the valve rod 4 extends into the valve body 1, a movable adjusting filter screen 3 is fixedly installed at the bottom end of the valve rod 4, a slotted hole which is in sealed insertion connection with the movable adjusting filter screen 3 is formed in the medium flow channel in the valve body 1, and a filter screen 5 which is positioned on the outer ring of the movable adjusting filter screen 3 is fixedly installed in the valve body 1.

And a winding gasket 6 is hermetically arranged at the joint of the valve body 1 and the valve cover 2, so that the sealing property of the joint of the valve body 1 and the valve cover 2 can be improved.

The filter screen 5 is a double-layer cylindrical structure, the mesh number of the filter screen 5 is gradually increased by two layers from outside to inside, and meanwhile, the mesh number of the movable adjusting filter screen 3 is larger than that of the filter screen 5, in the embodiment, the two layers of the filter screen 5 are 20 meshes and 50 meshes from outside to inside respectively, and the movable adjusting filter screen 3 is 120 meshes.

The upper end of the valve cover 2 is provided with a packing groove located on the outer ring of the valve rod 4, a lower packing 7 and an upper packing 8 are sequentially filled in the packing groove from bottom to top, a packing pressing sleeve 14 sleeved on the valve rod 4 is arranged at the top end of the packing groove, and a packing pressing plate 15 is arranged at the top end of the packing pressing sleeve 14. A loose joint bolt 11 is mounted on the packing press plate 15, the lower end of the loose joint bolt 11 is movably connected with the valve cover 2 through a pin 12, and the upper end of the loose joint bolt 11 is locked and fixed with the packing press plate 15 through a hexagon nut 13; wherein, the lower packing 7 is stainless steel wire + flexible graphite, the upper packing 8 is flexible graphite, the sealing performance of the joint of the valve rod 4 and the valve cover 2 can be improved through the upper packing and the lower packing, and the water seepage at the joint is prevented.

The outer lane fixed mounting of valve-stem nut 16 has and is located limiting plate 18 of hand wheel 17 below, when the hand wheel 17 drives to move and adjusts filter screen 3 and close the use down, hand wheel 17 lower extreme butt is on limiting plate 18 to close the position of use to moving and adjusting filter screen 3 and carry out spacing and mark, prevent to excessively close to damage and move and adjust filter screen 3.

Specifically, when the movable adjusting filter screen 3 is required to be used for precise filtering, the hand wheel 17 is rotated to drive the valve rod 4 to rotate, so that the valve rod 4 moves downwards under the screw thread transmission action of the valve rod nut 16, and further the movable adjusting filter screen 3 is driven to move downwards, so that the lower end of the movable adjusting filter screen 3 is hermetically inserted in a slotted hole of a medium flow channel in the valve body 1, and at the moment, a medium flowing through the valve body 1 is subjected to coarse filtering through the filter screen 5 and then is subjected to precise filtering through the movable adjusting filter screen 3; when the working condition does not need precise filtering, the hand wheel 17 is rotated reversely, the movable adjusting filter screen 3 is driven to move upwards to be opened, the medium in the flow channel is not isolated and filtered, and at the moment, the medium in the flow channel is only subjected to coarse filtering through the filter screen 5.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A precise combined filter comprises a valve body (1) and is characterized in that a medium flow passage is arranged in the valve body (1), the upper end of the valve body (1) is fixedly provided with a valve cover (2) through a bolt (9), a valve rod nut (16) is fixedly arranged at the top end of the valve cover (2), a valve rod (4) is arranged in the valve rod nut (16) through internal threads, the top end of the valve rod (4) is locked and provided with a hand wheel (17) through a hand wheel nut (10), the lower end of the valve rod (4) extends to the interior of the valve body (1), and the bottom end of the valve rod (4) is fixedly provided with a movable adjusting filter screen (3), a medium flow passage in the valve body (1) is provided with a groove hole which is in sealed insertion connection with the movable adjusting filter screen (3), the inside fixed mounting of valve body (1) is located filter screen (5) of removal regulation filter screen (3) outer lane.

2. A precision combination filter as claimed in claim 1, wherein: and a winding gasket (6) is hermetically arranged at the joint of the valve body (1) and the valve cover (2).

3. A precision combination filter as claimed in claim 1, wherein: the filter screen (5) is of a double-layer cylindrical structure, the filter screen (5) is of a two-layer structure from outside to inside, the mesh number of the filter screen (5) is gradually increased, and meanwhile, the mesh number of the movable adjusting filter screen (3) is larger than that of the filter screen (5).

4. A precision combination filter as claimed in claim 1, wherein: the packing device is characterized in that a packing groove located on the outer ring of the valve rod (4) is formed in the upper end of the valve cover (2), a lower packing (7) and an upper packing (8) are sequentially filled in the packing groove from bottom to top, a packing pressing sleeve (14) sleeved on the valve rod (4) is arranged at the top end of the packing groove, and a packing pressing plate (15) is arranged at the top end of the packing pressing sleeve (14).

5. A precision combination filter as claimed in claim 4, wherein: the packing press plate (15) is provided with a loose joint bolt (11), the lower end of the loose joint bolt (11) is movably connected with the valve cover (2) through a pin (12), and the upper end of the loose joint bolt (11) is locked and fixed with the packing press plate (15) through a hexagon nut (13).

6. A precision combination filter as claimed in claim 1, wherein: and a limiting plate (18) positioned below the hand wheel (17) is fixedly mounted on the outer ring of the valve rod nut (16).