Pre-filter valve head and pre-filter

Abstract

The utility model relates to the technical field of prefilters, in particular to a prefilter valve head and a prefilter, the prefilter valve head comprises a valve head, a cylindrical filter screen and a bottle body, a water inlet and a water outlet of the valve head are both provided with fixed circular ring pieces which are arranged in a matched mode, and the two fixed circular ring pieces respectively correspond to the cylindrical filter screen and the bottle body in position. And push rods are inserted into inner holes of the two fixing circular ring pieces, the bottom ends of the two push rods are connected with the cylindrical filter screen and the bottle body correspondingly, plugging blocks are arranged above the top ends of the two push rods, the two plugging blocks are elastically connected with the inner wall of the valve head correspondingly, and rubber sealing rings are bonded to the bottoms of the two plugging blocks correspondingly. According to the scheme, the two sets of fixing circular ring pieces and the two sets of blocking blocks are arranged in the water inlet and the water outlet of the valve head, at the moment, the water inlet and the water outlet of the valve head play a role in blocking, residual water solution in a water pipe is prevented from being splashed out, operation of workers is facilitated, and waste of the water solution is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefilter technical field especially relates to a prefilter valve head and prefilter. BACKGROUND

[0002] The prefilter is the first rough filter equipment of whole house water, can filter silt, rust, insect egg, red worm etc. big granular substance in tap water. In the prior art, the valve head in the prefilter is connected with the water pipe, the water solution in the water pipe flows into the bottle body from the water inlet of the valve head, and is filtered from the water outlet of the valve head after the filter screen, in the process of cleaning the filter screen in the prefilter, the valve of the water pipe needs to be closed first, and then the water solution in the water pipe connected with the prefilter is drained, and then the bottle body of the prefilter can be detached from the valve head, when the valve is closed, the water solution in the water pipe between the valve and the prefilter has not been drained, and in the process of detaching the bottle body from the prefilter, the residual water solution in the water pipe will splash out from between the valve and the bottle body, which is not conducive to the operation of the staff, and a lot of water solution is wasted. SUMMARY

[0003] The utility model discloses a prefilter valve head and prefilter are provided to solve the shortcomings in the prior art.

[0004] To achieve the above object, the utility model adopts the technical scheme that a prefilter valve head and prefilter, including valve head, cylindrical filter screen and bottle body, one end of cylindrical filter screen and bottle body is all screw -threaded and is installed in the inside of valve head, the cylindrical filter screen is located in the inside of bottle body, the water inlet and the water outlet of valve head all are installed with the fixed ring spare of matching setting, two fixed ring spare are corresponding respectively with the position of cylindrical filter screen and bottle body, the inner hole of two fixed ring spare all inserts the push rod, and the bottom of two push rods is connected with cylindrical filter screen and bottle body respectively, the top of two push rods is equipped with the bung above respectively, and two bungs are elastically connected with the inner wall of valve head respectively, and the bottom of two bungs is bonded with rubber seal ring.

[0005] Preferably, the inside of the bottle body is provided with two symmetrically arranged limiting ring members, a second connecting block is slidably arranged between the surfaces of the two limiting ring members, and one end of the push rod located in the bottle body is mounted on the top of the second connecting block.

[0006] Preferably, the surfaces of the two limiting ring members are provided with first sliding grooves, the two symmetric surfaces of the second connecting block are provided with limiting blocks, and one end of the two limiting blocks extends into the interiors of the two first sliding grooves respectively.

[0007] Preferably, one end of the push rod inside the cylindrical filter screen is provided with a first connecting block, and two ends of the first connecting block are installed on the inner surface of the cylindrical filter screen.

[0008] Preferably, the top of each of the two blocking blocks is provided with a mounting rod, the top end of the mounting rod is movably sleeved with a pipe, the top end of the pipe is installed on the inner surface of the valve head, the surface of the mounting rod is movably sleeved with a compression spring, and two ends of the compression spring are installed on the surface of the pipe and the blocking block respectively.

[0009] Preferably, the surface of the pipe is provided with a second sliding groove, the other end of the mounting rod is provided with a sliding block, and one end of the sliding block extends into the second sliding groove.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model discloses a kind of front filter valve heads and front filters, which are characterized by comprising bottle body, cylindrical filter screen, two groups of fixed ring and blocking block, two push rods, two compression springs and two rubber sealing rings, wherein, the bottle body is movably connected with the cylindrical filter screen, and the two groups of fixed ring and blocking block are installed in the water inlet and water outlet of the valve head. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a sectional view of the utility model of a kind of front filter valve heads and front filters;

[0013] Figure 2 It is a cylindrical filter screen and first connecting block connection structure schematic view of the utility model of a kind of front filter valve heads and front filters;

[0014] Figure 3 It is a limiting ring and limiting block connection structure schematic view of the utility model of a kind of front filter valve heads and front filters;

[0015] Figure 4 It is a limiting ring and connecting block connection structure schematic view of the utility model of a kind of front filter valve heads and front filters;

[0016] Figure 5 It is a push rod and blocking block connection structure schematic view of the utility model of a kind of front filter valve heads and front filters.

[0017] As shown in the figure: sewage valve 1, cylindrical filter screen 2, bottle body 3, limiting ring 4, push rod 5, block 6, pipe 7, valve head 8, first connecting block 9, second connecting block 10, limiting block 11, first sliding groove 12, rubber sealing ring 13, second sliding groove 14, mounting rod 15, compression spring 16, sliding block 17, fixed ring 18. DETAILED DESCRIPTION

[0018] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art.

[0019] As Figures 1-5 A pre-filter valve head and pre-filter shown in the figure, including valve head 8, cylindrical filter screen 2 and bottle body 3, one end of cylindrical filter screen 2 and bottle body 3 is threadedly installed in the inside of valve head 8, cylindrical filter screen 2 is located in the inside of bottle body 3, the water inlet and water outlet of valve head 8 are both installed with fixed ring 18 matched, two fixed ring 18 correspond to the position of cylindrical filter screen 2 and bottle body 3 respectively, push rod 5 is inserted in the inner hole of two fixed ring 18, the bottom end of two push rod 5 is connected with cylindrical filter screen 2 and bottle body 3 respectively, the top of the top end of two push rod 5 is provided with block 6, two block 6 are elastically connected with the inner wall of valve head 8 respectively, rubber sealing ring 13 is bonded on the bottom of two block 6, the outer diameter radial dimension of rubber sealing ring 13 is greater than the inner hole radial dimension of fixed ring 18, in the process of disassembling bottle body 3 and cylindrical filter screen 2, bottle body 3 and cylindrical filter screen 2 are spirally moved downward, at the same time, bottle body 3 and cylindrical filter screen 2 drive two push rod 5 to separate from two block 6, at the same time, two block 6 are pushed and moved downward by the elastic potential of two compression springs 16 in the compressed state, after block 6 drives rubber sealing ring 13 to press on the top of fixed ring 18, the water inlet and water outlet of valve head 3 all play the role of plugging at this time, prevent the residual water solution in the water pipe from splashing out, facilitate the operation of the staff, reduce the waste of water solution, after bottle body 3 and cylindrical filter screen 2 are threadedly installed in valve head 3, bottle body 3 and cylindrical filter screen 2 drive push rod 5 to push block 6 to move to the top of fixed ring 18, at this time, the inner hole of two fixed ring 18 can respectively supply water solution to flow into bottle body 3 and cylindrical filter screen 2, and the water solution flowing out to valve head 3, so that the water solution can flow normally.

[0020] The inside of the bottle body 3 is provided with two symmetrical limiting ring members 4, a second connecting block 10 is slidably arranged between the surfaces of the two limiting ring members 4, one end of a push rod 5 located in the bottle body 3 is arranged on the top of the second connecting block 10, the surfaces of the two limiting ring members 4 are both provided with first sliding grooves 12, the two symmetrical surfaces of the second connecting block 10 are both provided with limiting blocks 11, one end of each of the two limiting blocks 11 extends into the inside of the two first sliding grooves 12, during the screw rotation of the bottle body 3 on the valve head 8, the bottle body 3 drives the two limiting ring members 4 to rotate synchronously on the surface of the second connecting block 10, and drives the second connecting block 10 to move in the vertical direction, thereby facilitating the synchronous movement of the second connecting block 10 and the push rod 5 connected thereto, and the arrangement of the first sliding grooves 12 and the limiting blocks 11 facilitates the sliding of the limiting ring members 4 on the limiting blocks 11 through the first sliding grooves 12 during the screw rotation, thereby improving the convenience of operation.

[0021] One end of the push rod 5 located in the cylindrical filter screen 2 is provided with a first connecting block 9, the two ends of the first connecting block 9 are arranged on the inner surface of the cylindrical filter screen 2, and the first connecting block 9 is used to connect and fix one of the push rods 5 and the cylindrical filter screen 2, thereby facilitating the movement of the push rod 5 when the cylindrical filter screen 2 is screwing on the valve head 8.

[0022] The top of each of the two blocking blocks 6 is provided with a mounting rod 15, the top end of the mounting rod 15 is movably sleeved with a pipe 7, the top end of the pipe 7 is arranged on the inner surface of the valve head 8, the surface of the mounting rod 15 is movably sleeved with a compression spring 16, the two ends of the compression spring 16 are arranged on the surfaces of the pipe 7 and the blocking block 6 respectively, and the mounting rod 15 slides in the pipe 7 to facilitate the upward movement of the blocking block 6 after being subjected to force. When the blocking block 6 is subjected to external force, the length of the compression spring 16 is contracted, and the compression spring 16 is in an energy storage state. When the blocking block 6 moves downward, the compression spring 16 reversely pushes the blocking block 6 to move towards the top of the fixed ring member 18 by the elastic potential energy, thereby facilitating the blocking of the water outlet and the water inlet of the valve head 8.

[0023] The surface of the pipe 7 is provided with a second sliding groove 14, the other end of the mounting rod 15 is provided with a sliding block 17, one end of the sliding block 17 extends into the second sliding groove 14, and the sliding block 17 slides in the second sliding groove 14 synchronously with the mounting rod 15, and the two ends of the second sliding groove 14 limit the sliding block 17, thereby improving the stability of the sliding of the mounting rod 15 in the pipe 7.

[0024] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A pre-filter valve head and pre-filter, comprising a valve head (8), a cylindrical filter screen (2) and a bottle body (3), one end of the cylindrical filter screen (2) and the bottle body (3) are threadedly installed in the interior of the valve head (8), the cylindrical filter screen (2) is located in the interior of the bottle body (3), characterized in that, The water inlet and outlet of the valve head (8) are provided with matching fixed ring members (18), the two fixed ring members (18) correspond to the positions of the cylindrical filter screen (2) and the bottle body (3), the inner holes of the two fixed ring members (18) are provided with push rods (5), the bottom ends of the two push rods (5) are connected with the cylindrical filter screen (2) and the bottle body (3), the top ends of the two push rods (5) are provided with plugs (6), the two plugs (6) are elastically connected with the inner wall of the valve head (8), the bottom of the two plugs (6) is provided with rubber sealing rings (13), the outer diameter of the rubber sealing ring (13) is larger than the inner hole diameter of the fixed ring member (18).

2. A pre-filter valve head and pre-filter according to claim 1, characterised in that, The inside of the bottle body (3) is provided with two symmetrical limiting ring members (4), the surfaces of the two limiting ring members (4) are provided with a second connecting block (10), one end of the push rod (5) in the bottle body (3) is installed on the top of the second connecting block (10).

3. A prefilter valve head and prefilter according to claim 2, wherein, The surfaces of the two limiting ring members (4) are provided with first sliding grooves (12), the two symmetrical surfaces of the second connecting block (10) are provided with limiting blocks (11), one end of the two limiting blocks (11) extends into the two first sliding grooves (12) respectively.

4. A prefilter valve head and prefilter according to claim 1, wherein, One end of the push rod (5) in the cylindrical filter screen (2) is provided with a first connecting block (9), the two ends of the first connecting block (9) are installed on the inner surface of the cylindrical filter screen (2).

5. A prefilter valve head and prefilter according to claim 1, wherein, The top of the two plugs (6) is provided with mounting rods (15), the top end of the mounting rod (15) is movably sleeved with a pipe (7), the top end of the pipe (7) is installed on the inner surface of the valve head (8), the surface of the mounting rod (15) is movably sleeved with a compression spring (16), the two ends of the compression spring (16) are installed on the surfaces of the pipe (7) and the plug (6) respectively.

6. A prefilter valve head and prefilter according to claim 5, wherein, The surface of the pipe (7) is provided with a second sliding groove (14), the other end of the mounting rod (15) is provided with a sliding block (17), one end of the sliding block (17) extends into the second sliding groove (14).

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