Butterfly valve with filter screen convenient to disassemble and assemble

Abstract

The butterfly valve comprises a butterfly valve body and a filter screen plate, the filter screen plate is clamped to the valve face of the front side of the butterfly valve body, a clamping block is welded to the end face of the outer side of the filter screen plate, and limiting plates penetrate through the left side face and the right side face of the clamping block; the side end of the limiting plate is movably connected with a clamping block through a connecting sliding plate, a positioning block is embedded and attached to the inner side of the front surface of the clamping block, a hook spring is arranged in a front side groove of the positioning block, the two ends of the hook spring are connected with anti-disengaging insertion plates through fixing rings, and the limiting plate is connected with the anti-disengaging insertion plates in an inserted mode through the connecting sliding plate. The butterfly valve solves the problem that in the prior art, a filter screen plate and a fixing ring which are integrally installed in a screwed mode in a butterfly valve are disassembled for multiple times, threads in holes are prone to being abraded, and disassembly and assembly stability is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely relates to a butterfly valve convenient to dismount filter screen. BACKGROUND

[0002] Butterfly valve is a simple structure regulating valve, mainly used for low pressure pipeline medium on-off control.‌The closing piece (valve clapper or butterfly plate) of butterfly valve is discoid, rotates around the valve shaft to realize opening and closing. It can play the role of cutting off and throttling in the pipeline, is suitable for controlling the flow of air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium and so on, through the retrieval, the prior art (announcement number: CN202421093457.7) a kind of butterfly valve convenient to dismount filter screen, the filter screen plate and fixed ring are detachably connected together in the document, so that filter screen plate can be installed and disassembled with fixed ring relative to valve body, so design compared with prior art filter screen plate and fixed ring independent design can be integrated into one, filter screen plate is installed and disassembled with fixed ring, make up the defect that filter screen plate disassembly is difficult and prone to jam, it is also ensured that the filter screen structure of filter screen plate is stable, filtering effect is stable and avoids the condition that impurities fall in the second annular groove or the first annular groove when maintaining;The design of counterbore can ensure that filter screen plate can be tightly attached to the groove bottom of second annular groove to form hard seal, but the filter screen plate and fixed ring of integrated screw connection installation in the prior art are prone to wear hole internal thread when disassembled multiple times, affect the stable disassembly. SUMMARY

[0003] To overcome the defects existing in the prior art, a butterfly valve convenient to dismount filter screen is provided to solve the problem that the filter screen plate and fixed ring of integrated screw connection installation in the prior art are prone to wear hole internal thread when disassembled multiple times, affect the stable disassembly.

[0004] To achieve the above-mentioned purpose, a butterfly valve convenient to dismount filter screen is provided, which comprises: a butterfly valve body and a filter screen plate, the front side valve face of the butterfly valve body is clamped with the filter screen plate,

[0005] The outer side end face of the filter screen plate is welded with a clamping block, the left and right side faces of the clamping block are penetrated with a limiting plate, the limiting plate side end is movably connected with the clamping block through a connecting slide plate, the inner side of the front surface of the clamping block is inlaid and matched with a positioning block, the front side groove of the positioning block is provided with a hook spring, the both ends of the hook spring are connected with an anti-dropping plug plate through a fixed ring, and the limiting plate is inserted with the anti-dropping plug plate through the connecting slide plate.

[0006] Further, the valve rod is arranged in the middle of the butterfly valve body, and the transmission device is connected to the upper end of the valve rod.

[0007] Further, four groups of clamping blocks are annularly distributed on the outer side of the filter screen plate, and the four groups of clamping blocks are embedded and attached at the groove surface of the butterfly valve body.

[0008] Further, a sliding groove is formed at the front end surface of the clamping block, and a connecting sliding plate is connected in the sliding groove, one side of the connecting sliding plate is welded with a limiting plate, and the other side is inserted with an anti-dropping plug plate.

[0009] Further, an expansion slot is formed at the front surface of the positioning block, and the anti-dropping plug plate penetrates and connects the expansion slot, and a notch is formed at the upper end of the expansion slot.

[0010] Further, the anti-dropping plug plate is welded on one side of the anti-dropping plug plate, and two groups of fixing rings are welded on the other side of the anti-dropping plug plate.

[0011] Further, the anti-dropping plug plate is welded on one side of the anti-dropping plug plate, and two groups of fixing rings are welded on the other side of the anti-dropping plug plate.

[0012] The beneficial effects of the butterfly valve convenient to disassemble and assemble the filter screen of the utility model lie in that the butterfly valve convenient to disassemble and assemble the filter screen of the utility model utilizes clamping blocks, limiting plates, positioning blocks, anti-dropping plug plates and hook springs to constitute a disassembly and assembly component of the filter screen plate, the anti-dropping plug plate is inserted into the limiting plate side end in the clamping block by the spring in the positioning block groove, the limiting plate is inserted into the corresponding groove at the butterfly valve surface, the filter screen plate at the butterfly valve can be quickly installed or disassembled, the damage of the disassembly and assembly component at the butterfly valve filter screen plate caused by multiple disassembly and assembly is reduced, the service life of the disassembly and assembly component of the filter screen plate is enhanced, and the convenient practicality of the butterfly valve with the filter screen is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a front view cross-sectional structure schematic view of the butterfly valve convenient to disassemble and assemble the filter screen of the utility model embodiment.

[0014] Fig. 2 It is a front view cross-sectional structure schematic view of the butterfly valve convenient to disassemble and assemble the filter screen of the utility model embodiment.

[0015] Fig. 3 It is a side view cross-sectional structure schematic view of the butterfly valve convenient to disassemble and assemble the filter screen of the utility model embodiment.

[0016] Fig. 4 It is a front view structure schematic view of the positioning block of the utility model embodiment.

[0017] In the drawing: 1, butterfly valve body; 11, transmission device; 12, valve rod; 2, filter screen plate; 3, clamping block; 31, limiting plate; 32, connecting sliding plate; 33, sliding groove; 4, positioning block; 41, anti-dropping plug plate; 42, hook spring; 43, fixing ring; 44, notch; 45, push plate; 46, expansion slot. DETAILED DESCRIPTION

[0018] Referring to Figs. 1 to 4 The utility model provides a butterfly valve convenient to dismount filter screen, include: butterfly valve body 1 and filter screen plate 2, butterfly valve body 1 front side valve face has the filter screen plate 2,

[0019] Filter screen plate 2 outside end face welds and has the clamping block 3, and the clamping block 3 left and right side penetrates the limiting plate 31, and the limiting plate 31 side end is movably connected with the clamping block 3 through the link sliding plate 32, and the clamping block 3 front surface inboard is inlaid and is attached with the locating block 4, and the locating block 4 front side groove is provided with the hook spring 42, and the hook spring 42 both ends are connected with the anti -drop plug -in board 41 through the fixed ring 43, and the limiting plate 31 is inserted with the anti -drop plug -in board 41 through the link sliding plate 32.

[0020] When needing to remove the filter screen plate 2 at the valve face of butterfly valve body 1, one hand pulls the push plate 45 and pushes the anti -drop plug -in board 41 and extrudes the hook spring 42, and the other hand takes out the locating block 4 from the clamping block 3 through the slot 44, and the locating block 4 in the clamping block 3 is taken out in turn, and the limiting plate 31 is removed from the inside groove of butterfly valve body 1, and the filter screen plate 2 can be removed.

[0021] In the embodiment, the valve stem 12 is arranged in the middle of the butterfly valve body 1, and the transmission device 11 is connected to the upper end of the valve stem 12.

[0022] As a preferred embodiment, the valve stem 12 is used to drive the butterfly plate to rotate, achieving the effect of opening and closing. The transmission device 11 is used to rotate the butterfly plate inside the butterfly valve body 1 through the valve stem 12 to change the flux of the medium in the pipeline, thereby realizing the control and adjustment of the medium flow.

[0023] In the embodiment, four groups of clamping blocks 3 are arranged in a ring shape on the outer side surface of the filter screen plate 2, and the four groups of clamping blocks 3 are embedded and attached to the groove surface of the butterfly valve body 1. The front end surface of the clamping block 3 is provided with a sliding groove 33, and the sliding groove 33 is connected with the link sliding plate 32. The link sliding plate 32 is welded with the limiting plate 31 on one side, and the anti -drop plug -in board 41 is inserted on the other side.

[0024] As a preferred embodiment, the clamping block 3 facilitates the positioning of the installation position of the filter screen plate 2 on the surface of the butterfly valve body 1. The limiting plate 31 is moved on the surface of the clamping block 3 through the link sliding plate 32, so that the limiting plate 31 is in the extended or retracted state. The installation or disassembly of the filter screen plate 2 is realized through the limiting plate 31 in the extended or retracted state.

[0025] In the embodiment, the front surface of the positioning block 4 is provided with an expansion slot 46; and the anti-disengagement plug plate 41 is connected through the expansion slot 46, and the upper end of the expansion slot 46 is provided with a notch 44. The anti-disengagement plug plate 41 is welded on one side surface of the anti-disengagement plug plate 41, and two groups of fixing rings 43 are welded on the other side surface of the anti-disengagement plug plate 41. The front surface of the anti-disengagement plug plate 41 is fixed with a push plate 45, and the clamping block 3 is connected with the inner groove of the butterfly valve body 1 through the limiting plate 31.

[0026] As a preferred embodiment, the hook spring 42 elastically supports the anti-disengagement plug plate 41, so that the anti-disengagement plug plate 41 is kept inserted and pressed at the side surface of the connecting sliding plate 32, thereby preventing the limiting plate 31 from being disengaged from the inner groove of the butterfly valve body 1, and ensuring the stable installation of the filter screen plate 2 and the butterfly valve body 1. The push plate 45 is used to push the anti-disengagement plug plate 41 to compress the hook spring 42, so that the anti-disengagement plug plate 41 is separated from the connecting sliding plate 32, and the positioning block 4 can be taken out, and the limiting plate 31 in the inner groove of the butterfly valve body 1 can be removed.

[0027] The butterfly valve with the filter screen convenient to disassemble and assemble can effectively solve the problem that the filter screen plate and the fixing ring integrally screwed in the butterfly valve are easily abraded and affect the disassembly stability due to multiple disassembly, and the filter screen plate at the butterfly valve can be quickly installed or disassembled, the damage of the disassembly assembly at the filter screen plate of the butterfly valve due to multiple disassembly is reduced, the service life of the disassembly assembly of the filter screen plate is prolonged, the convenience and practicality of the butterfly valve with the filter screen are improved, and the butterfly valve with the filter screen convenient to disassemble and assemble is suitable.

Claims

1. A butterfly valve facilitating the removal and replacement of a filter screen, comprising: Butterfly valve body (1) and filter screen plate (2), the butterfly valve body (1) front side valve surface joint has filter screen plate (2), characterized by: The outer side end surface of the filter screen plate (2) is welded with a clamping block (3), the left and right side surfaces of the clamping block (3) are penetrated by a limiting plate (31), the limiting plate (31) is movably connected with the clamping block (3) through a connecting sliding plate (32), the front surface of the clamping block (3) is inlaid with a positioning block (4), the front side groove of the positioning block (4) is provided with a hook spring (42), the hook spring (42) is connected with an anti-dropping plug plate (41) through a fixed ring (43) at both ends, and the limiting plate (31) is inserted with the anti-dropping plug plate (41) through the connecting sliding plate (32).

2. The butterfly valve according to claim 1, wherein The butterfly valve body (1) is provided with a valve rod (12) in the middle, and the valve rod (12) is connected with a transmission device (11) at the upper end.

3. The butterfly valve of claim 1, wherein, The outer side surface of the filter screen plate (2) is annularly distributed with four groups of clamping blocks (3); and the four groups of clamping blocks (3) are inlaid on the groove surface of the butterfly valve body (1).

4. The butterfly valve of claim 1, wherein, The front end surface of the clamping block (3) is provided with a sliding groove (33); and the sliding groove (33) is connected with a connecting sliding plate (32), one side of the connecting sliding plate (32) is welded with a limiting plate (31); and the other side is inserted with an anti-dropping plug plate (41).

5. The butterfly valve of claim 1, wherein, The front surface of the positioning block (4) is provided with an expansion slot (46); and the anti-dropping plug plate (41) penetrates the expansion slot (46), and the upper end of the expansion slot (46) is provided with a notch (44).

6. The butterfly valve of claim 1, wherein, One side of the anti-dropping plug plate (41) is welded with an anti-dropping plug plate (41), and the other side of the anti-dropping plug plate (41) is welded with two groups of fixed rings (43).

7. The butterfly valve of claim 1, wherein, The front surface of the anti-dropping plug plate (41) is fixed with a push plate (45), and the clamping block (3) is connected with the inner groove of the butterfly valve body (1) through the limiting plate (31).

Images