CN115574105A

CN115574105A - Cut-off check valve

Info

Publication number: CN115574105A
Application number: CN202211088646.0A
Authority: CN
Inventors: 曲克勇; 常思丝
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-06

Abstract

The invention belongs to the field of valves, and particularly relates to a cut-off check valve which comprises a valve body, wherein a valve cover is fixedly arranged on the upper side of the valve body, a through hole is formed between a liquid inlet and a liquid outlet in a connecting manner, a movable rod is arranged at the lower end of the valve rod, a pressing plate for blocking the through hole is fixedly arranged at the lower end of the movable rod, a valve bottom is arranged on the lower side of the valve body, a base is arranged on the upper side of the valve bottom, a telescopic block is arranged in the base, a fixing plate is arranged at the upper end of the telescopic block, an arc-shaped plug for non-return is arranged on the upper side of the fixing plate, and a filter screen is connected between the pressing plate and the arc-shaped plug. According to the invention, water can be introduced into the cleaning cavity through the discharging hole, the filter screen in the cleaning cavity is washed, and the inner side and the outer side of the filter screen are scrubbed through the first sponge block and the second sponge block, so that the filter screen is cleaned; the shifting block slides back and forth on the plug plate by the impact force of the first spring and water, so that impurities on the filter screen shake and fall, and the filter screen is prevented from being blocked by the impurities.

Description

Cut-off check valve

Technical Field

The invention belongs to the field of valves, and particularly relates to a cut-off check valve.

Background

In the prior art, the valves can be divided into a cut-off function, a non-return function, an adjustment function, a flow division function and the like according to the functions, when the outlet pipeline of the water pump needs to be cut off and the non-return function has a filtering function, a plurality of valves are generally required to be installed at the same time, the cut-off function and the non-return function are generally arranged in the same valve to cut off the non-return valve,

present cut check valve because the liquid is often adulterated with the foul in the use, consequently just need carry out filtration treatment at the valve use, after the filtering surface uses for a long time, if do not in time clear up the varactor and easily cause the jam, greatly influenced life.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a cut-off check valve capable of filtering impurities in water.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a cut check valve, includes the valve body, the fixed valve gap that is equipped with of valve body upside, valve body one side is equipped with the inlet, the inlet circumference outside is equipped with the feed liquor flange, the skew inlet one side of valve body is equipped with the leakage fluid dram, the leakage fluid dram circumference outside is equipped with the leakage fluid dram, it is equipped with the through-hole to be connected between inlet and the leakage fluid dram, the valve gap top is equipped with the hand wheel, the inboard of hand wheel is equipped with the valve rod, the lower extreme of valve rod passes the valve gap downwards and extends to in the valve body, the lower extreme of valve rod is equipped with the movable rod, the movable rod lower extreme sets firmly the clamp plate that is used for plugging up the through-hole, the valve body downside is equipped with at the bottom of the valve, the upside is equipped with the base at the bottom of the valve, be equipped with flexible piece in the base, flexible piece upper end is equipped with the fixed plate, the fixed plate upside is equipped with the arc closure that is used for the non-return, it is equipped with the filter screen to be connected between clamp plate and the arc closure.

Wherein, the clamp plate is used for cuting the effect to the through-hole upside, and arc closure is used for carrying out double filtration, impurity removal to water to through-hole downside non return effect, filter screen.

Preferably, the movable rod is in threaded connection with the valve cover, the plug plate is arranged on the lower side of the pressing plate, an annular plug block is arranged on the outer side of the plug plate in the circumferential direction, an annular groove corresponding to the annular plug block is formed in the outer side of the through hole in the circumferential direction, and the valve rod is in threaded connection with the valve cover. The plug plate and the through hole are correspondingly plugged to form the through hole, and then the annular plug block is matched with the annular groove to perform secondary sealing, so that the through hole is further plugged.

Preferably, the lower side of the plug plate is provided with two shifting blocks in a sliding manner, first springs are arranged between the two shifting blocks and the plug plate in a connecting manner, and two sides of the upper end of the filter screen are respectively connected with the two shifting blocks. Wherein, make the shifting block make a round trip to slide on the cock board through the impact force of first spring and water to make the impurity shake whereabouts on the filter screen, prevent that the filter screen from being blockked up by impurity.

Preferably, be connected between fixed plate and the valve end and be equipped with compression spring, be connected between valve gap and the valve body and be equipped with first sealed the pad, be connected between the valve end and the valve body and be equipped with the sealed pad of second. Wherein, through compression spring's elasticity, in time promote the fixed plate and upwards extrude, block up the through-hole downside through the arc plug-in, carry out the non return effect.

Preferably, the through hole both sides are equipped with two clearance chambeies, two clearance intracavity are equipped with two sleeves respectively, the filter screen cover is in two sleeve circumference outsides.

Preferably, all be equipped with the magnetism post in two sleeves, two clearance intracavity all are equipped with the spout, the magnetism post slides in the spout, two clearance intracavity outsides all are equipped with the electromagnetism piece.

Preferably, ring channel one side is equipped with the unloading hole, the downthehole slip of unloading is equipped with the slide, it is equipped with the second spring to be connected between the slide outside and the valve body, be equipped with the feed opening on the slide, the front side of slide extends to in the ring channel, the unloading jogged joint clearance intracavity portion and through-hole top. Wherein, introduce water in the clearance intracavity through the unloading hole, wash the filter screen in the clearance intracavity.

Preferably, the inside both sides of clearance chamber all are equipped with first sponge piece, clearance chamber opening part both sides all are equipped with the second sponge piece, the filter screen both sides all are equipped with big filtration pore, big filtration pore is located the through-hole. The second sponge block is matched with the filter screen and the sleeve, so that water in the through hole cannot enter the cleaning cavity when the filter screen is opened; the inner side and the outer side of the filter screen are brushed through the first sponge block and the second sponge block.

Preferably, be equipped with the extrusion chamber between flexible piece and the base, it is equipped with interface channel to be connected between extrusion chamber and the clearance chamber, flexible piece circumference outside is equipped with the annular member that is used for plugging up interface channel, be equipped with the annular groove that corresponds with the annular member lower part on the base, the base downside is equipped with the drain of being connected with the valve bottom outside, the drain internal rotation is equipped with the axis of rotation, the axis of rotation circumference outside is equipped with the rotor plate that is used for plugging up the drain, the circumference outside of axis of rotation is equipped with the torsional spring.

Preferably, the two sides of the rotating plate are respectively provided with a sliding block, a third spring is connected between each sliding block and the rotating plate, and a hydraulic channel is connected between each sliding block and the annular groove.

Has the advantages that:

1. the through hole is correspondingly plugged by the plug plate and the through hole, and the annular plug block is matched with the annular groove to perform secondary sealing, so that the through hole is further plugged.

2. Through the unloading hole with water introduction clearance intracavity, wash the filter screen of clearance intracavity, the inboard and the outside of filter screen are scrubbed to first sponge piece of rethread and second sponge piece, with the filter screen sanitization.

3. The shifting block slides back and forth on the plug plate by the impact force of the first spring and water, so that impurities on the filter screen shake and fall, and the filter screen is prevented from being blocked by the impurities.

Drawings

The invention is further explained below with reference to the figures and examples:

fig. 1 is a schematic isometric view of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 isbase:Sub>A schematic sectional view atbase:Sub>A-base:Sub>A in fig. 2.

Fig. 4 is a schematic view of a portion B in fig. 3.

Fig. 5 is a schematic view of a portion C in fig. 3.

Fig. 6 is a schematic view of a portion of fig. 3 at D.

Fig. 7 is a schematic view of a portion E in fig. 3.

In the figure, a valve body 10, a valve cover 11, a hand wheel 12, a valve rod 13, a cleaning cavity 14, an annular groove 15, a valve bottom 16, a liquid inlet flange 17, a liquid outlet flange 18, a liquid inlet 19, a liquid outlet 20, a first sealing gasket 21, a second sealing gasket 22, a movable rod 23, a pressure plate 24, a through hole 25, a filter screen 26, a base 27, a telescopic block 28, a fixing plate 29, an arc-shaped blocking piece 30, a compression spring 31, a blocking plate 32, an annular blocking block 33, a shifting block 34, a first spring 35, a magnetic column 36, a sleeve 37, a sliding groove 38, an annular groove 39, a large filter hole 40, a sliding plate 41, a blanking hole 42, a second spring 43, a blanking hole 44, a first sponge block 45, a second sponge block 46, an electromagnetic block 47, a connecting channel 48, a rotating shaft 49, a rotating plate 50, a torsion spring 51, a sliding block 52, a third spring 53, a hydraulic channel 54, an annular piece 55, a sewage draining outlet 56 and a squeezing cavity 57 are arranged.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

With reference to fig. 1-7, a cut-off check valve comprises a valve body 10, a valve cover 11 is fixedly arranged on the upper side of the valve body 10, a liquid inlet 19 is arranged on one side of the valve body 10, a liquid inlet flange 17 is arranged on the circumferential outer side of the liquid inlet 19, a liquid outlet 20 is arranged on one side of the valve body 10, a liquid outlet flange 18 is arranged on the circumferential outer side of the liquid outlet 20, a through hole 25 is formed between the liquid inlet 19 and the liquid outlet 20, a hand wheel 12 is arranged above the valve cover 11, a valve rod 13 is arranged on the inner side of the hand wheel 12, the lower end of the valve rod 13 downwards penetrates through the valve cover 11 and extends into the valve body 10, a movable rod 23 is arranged at the lower end of the valve rod 13, a pressing plate 24 used for plugging the through hole 25 is fixedly arranged at the lower end of the movable rod 23, a valve bottom 16 is arranged on the lower side of the valve bottom 16, a base 27 is provided with a telescopic block 28, a fixing plate 29 is arranged on the upper end of the telescopic block 28, an arc-shaped block 30 used for non-return is arranged on the upper side of the fixing plate 29, and a filter screen 26 is connected between the pressing plate 24 and the arc-shaped block 30.

Further, referring to fig. 1-7, the movable rod 23 is in threaded connection with the valve cap 11, the lower side of the pressing plate 24 is provided with a plug plate 32, the circumferential outer side of the plug plate 32 is provided with an annular plug 33, the circumferential outer side of the through hole 25 is provided with an annular groove 39 corresponding to the annular plug 33, and the valve rod 13 is in threaded connection with the valve cap 11.

Further, with reference to fig. 1-7, two shifting blocks 34 are slidably disposed on the lower side of the plug plate 32, first springs 35 are disposed between the two shifting blocks 34 and the plug plate 32, and two sides of the upper end of the filter screen 26 are respectively connected to the two shifting blocks 34.

Further, referring to fig. 1-7, a compression spring 31 is connected between the fixing plate 29 and the valve bottom 16, a first sealing gasket 21 is connected between the valve cover 11 and the valve body 10, and a second sealing gasket 22 is connected between the valve bottom 16 and the valve body 10.

Further, referring to fig. 1-7, two cleaning cavities 14 are disposed on two sides of the through hole 25, two sleeves 37 are disposed in the two cleaning cavities 14, and the filter screen 26 is sleeved on the outer sides of the two sleeves 37 in the circumferential direction.

Further, with reference to fig. 1 to 7, magnetic columns 36 are disposed in the two sleeves 37, sliding grooves 38 are disposed in the two cleaning chambers 14, the magnetic columns 36 slide in the sliding grooves 38, and electromagnetic blocks 47 are disposed outside the two cleaning chambers 14.

Further, referring to fig. 1-7, a discharging hole 42 is formed in one side of the annular groove 39, a sliding plate 41 is slidably disposed in the discharging hole 42, a second spring 43 is connected between the outer side of the sliding plate 41 and the valve body 10, a discharging hole 44 is formed in the sliding plate 41, the front side of the sliding plate 41 extends into the annular groove 39, and the discharging hole 42 is connected between the inside of the cleaning cavity 14 and the upper side of the through hole 25.

Further, with reference to fig. 1-7, first sponge blocks 45 are disposed on two sides of the inside of the cleaning cavity 14, second sponge blocks 46 are disposed on two sides of the opening of the cleaning cavity 14, large filtering holes 40 are disposed on two sides of the filtering net 26, and the large filtering holes 40 are disposed in the through holes 25.

Further, with reference to fig. 1-7, a squeezing cavity 57 is provided between the telescopic block 28 and the base 27, a connection channel 48 is provided between the squeezing cavity 57 and the cleaning cavity 14, a ring member 55 for plugging the connection channel 48 is provided on the circumferential outer side of the telescopic block 28, an annular groove 15 corresponding to the lower portion of the ring member 55 is provided on the base 27, a sewage outlet 56 connected to the outer side of the valve bottom 16 is provided on the lower side of the base 27, a rotation shaft 49 is provided in the sewage outlet 56, a rotation plate 50 for plugging the sewage outlet 56 is provided on the circumferential outer side of the rotation shaft 49, and a torsion spring 51 is provided on the circumferential outer side of the rotation shaft 49.

Further, referring to fig. 1 to 7, sliding blocks 52 are disposed on both sides of the rotating plate 50, a third spring 53 is connected between each sliding block 52 and the rotating plate 50, and a hydraulic passage 54 is connected between each sliding block 52 and the annular groove 15.

Principle of operation

An opening state: the valve body 10 is fixedly connected to a pipeline through the liquid inlet flange 17 and the liquid discharge flange 18 on the two sides, an operator rotates the hand wheel 12 anticlockwise, the hand wheel 12 rotates to drive the valve rod 13 to rotate, the valve rod 13 rotates to drive the movable rod 23 to rotate, the movable rod 23 rotates to enable the movable rod 23 to move upwards through threaded connection between the movable rod 23 and the valve cover 11, the movable rod 23 moves upwards to drive the pressing plate 24 to be separated from the through hole 25, water entering the valve body 10 through the liquid inlet 19 is filtered through the filter screen 26 on the pressing plate 24, then the arc-shaped plug 30 moves downwards through downward extrusion of the through hole 25, and the water is discharged out of the valve body 10 through the liquid discharge port 20 after being secondarily filtered through the filter screen 26; pressing plate 24 and the upwards both sides removal of arc closure 30 drive two sleeves 37 through filter screen 26 and move to the inboard simultaneously to in order to open filter screen 26, when the filter screen 26 of through-hole 25 upside filters water, make shifting block 34 make a round trip to slide on cock plate 32 through the first spring 35 of impact force cooperation of water, shifting block 34 makes a round trip to slide and drives the shake of filter screen 26 upper portion and make the impurity on the filtration pore on the filter screen 26 shake whereabouts, prevent that filter screen 26 from plugging up.

A check state: this valve is at the full back of opening, because the pump that stops or cuts off the power supply suddenly stops, and through-hole 25 upside does not intake, promotes fixed plate 29 rebound through compression spring 31's elasticity, blocks up through-hole 25 downside through arc shutoff 30, makes the water in the leakage fluid dram 20 can not enter into liquid inlet 19 through-hole 25 in, carries out the non return effect.

Double cut-off state: when the pipeline needs to be cut off and stops conveying fluid, the hand wheel 12 is rotated clockwise, the hand wheel 12 rotates to drive the valve rod 13 to rotate, the valve rod 13 rotates to drive the movable rod 23 to rotate, the movable rod 23 rotates to be in threaded connection with the valve cover 11 through the movable rod 23 to enable the movable rod 23 to move downwards, the movable rod 23 moves downwards to drive the pressing plate 24 to move downwards to contact with the through hole 25, the through hole 25 is blocked through the plugging plate 32, then the annular plugging block 33 is correspondingly matched with the annular groove 39 to enable water on the upper side of the through hole 25 not to flow downwards through the through hole 25, then the fixing plate 29 is pushed to move upwards through the elasticity of the compression spring 31, the lower side of the through hole 25 is blocked through the arc-shaped plugging piece 30, and the water in the liquid discharging port 20 cannot enter the liquid inlet 19 through the through hole 25 to be in a double-cut-off state. The pressing plate 24 and the arc-shaped plugging piece 30 are both contacted with the through hole 25, the filter screen 26 is contracted into the through hole 25, the two magnetic columns 36 respectively slide to two sides through the two sliding grooves 38 by the magnetic force of the two electromagnetic blocks 47, the two magnetic columns 36 slide to two sides respectively to drive the two sleeves 37 to move to two sides, and the two sleeves 37 move to pull the filter screen 26 into the cleaning cavity 14 towards two sides; when the filter screen 26 slides towards two sides, firstly, the impurities on the inner side of the filter screen 26 are brushed down through the matching of the two second sponge blocks 46 and the valve body 10, and then the impurities on the outer side of the filter screen 26 are brushed down through the two first sponge blocks 45; the fixed plate 29 moves upwards to drive the ring-shaped piece 55 to move upwards through the telescopic block 28, so that the connecting channel 48 is opened, the annular plug block 33 enters the annular groove 39 to extrude and slide the sliding plate 41, the feed opening 44 is connected with the feed hole 42, water on the upper side of the through hole 25 is connected with the feed hole 42 through the feed opening 44 and enters the cleaning cavity 14, the water flushes the impurities inside and outside the filter screen 26 into the connecting channel 48 through the large filter hole 40, sewage enters the extrusion cavity 57 through the connecting channel 48, after the through hole 25 is opened, the telescopic block 28 moves downwards to drive the ring-shaped piece 55 to move downwards to drive the ring-shaped piece 15 to extrude the water in the ring-shaped piece 15 through the two hydraulic channels 54 and simultaneously extrude the sliding block 52 into the rotating plate 50, the ring-shaped piece 55 moves downwards to block the connecting channel 48, the telescopic block 28 extrudes the sewage in the extrusion cavity 57 downwards to drive the rotating plate 50 to rotate, the sewage to discharge through the sewage discharge outlet 56, and drives the rotating plate 50 to rotate and reset through the torsion spring 51.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The cut-off check valve comprises a valve body (10) and is characterized in that a valve cover (11) is fixedly arranged on the upper side of the valve body (10), a liquid inlet (19) is arranged on one side of the valve body (10), a liquid inlet flange (17) is arranged on the outer side of the circumferential direction of the liquid inlet (19), a liquid discharge port (20) is arranged on one side of the valve body (10) deviated from the liquid inlet (19), a liquid discharge flange (18) is arranged on the outer side of the circumferential direction of the liquid discharge port (20), a through hole (25) is formed between the liquid inlet (19) and the liquid discharge port (20), a hand wheel (12) is arranged above the valve cover (11), a valve rod (13) is arranged on the inner side of the hand wheel (12), the lower end of the valve rod (13) downwards penetrates through the valve cover (11) and extends into the valve body (10), a movable rod (23) is arranged at the lower end of the valve rod (13), a pressing plate (24) for blocking the through hole (25) is fixedly arranged at the lower end of the valve body (10), a valve base (16) is arranged on the upper side of the valve base (16), a telescopic block (28) is arranged on the base (27), and a fixing plate (29) for blocking the upper end of a fixing plate (30) for blocking the non-return block fixing plate (29), and a filter screen (26) is connected between the pressure plate (24) and the arc-shaped plugging piece (30).

2. The cutoff check valve according to claim 1, wherein: activity pole (23) and valve gap (11) threaded connection, clamp plate (24) downside is equipped with cock board (32), cock board (32) circumference outside is equipped with annular chock (33), the circumference outside of through-hole (25) is equipped with ring channel (39) that correspond with annular chock (33), valve rod (13) and valve gap (11) threaded connection.

3. The cutoff check valve according to claim 2, wherein: the utility model discloses a filter screen, including cock board (32), cock board (32) downside slides and is equipped with two shifting blocks (34), it all is equipped with first spring (35) to be connected between two shifting blocks (34) and cock board (32), the upper end both sides of filter screen (26) are connected with two shifting blocks (34) respectively.

4. The cutoff check valve according to claim 1, wherein: be connected between fixed plate (29) and the valve end (16) and be equipped with compression spring (31), it is equipped with first sealed pad (21) to be connected between valve gap (11) and valve body (10), it is equipped with the sealed pad (22) of second to be connected between the valve end (16) and valve body (10).

5. The cutoff check valve according to claim 1, wherein: through-hole (25) both sides are equipped with two clearance chambeies (14), be equipped with two sleeve (37) in two clearance chambeies (14) respectively, filter screen (26) cover is in two sleeve (37) circumference outsides.

6. The cutoff check valve according to claim 5, wherein: all be equipped with magnetism post (36) in two sleeves (37), all be equipped with spout (38) in two clearance chambeies (14), magnetism post (36) slide in spout (38), two clearance chamber (14) outsides all are equipped with electromagnetism piece (47).

7. The cutoff check valve according to claim 2 or 5, wherein: annular groove (39) one side is equipped with unloading hole (42), it is equipped with slide (41) to slide in unloading hole (42), it is equipped with second spring (43) to be connected between slide (41) the outside and valve body (10), be equipped with feed opening (44) on slide (41), the front side of slide (41) extends to in annular groove (39), unloading hole (42) are connected clearance chamber (14) inside and through-hole (25) top.

8. The cutoff check valve according to claim 7, wherein: the cleaning device is characterized in that first sponge blocks (45) are arranged on two sides of the interior of the cleaning cavity (14), second sponge blocks (46) are arranged on two sides of the opening of the cleaning cavity (14), large filtering holes (40) are arranged on two sides of the filtering net (26), and the large filtering holes (40) are located in the through holes (25).

9. The cutoff check valve according to claim 1, wherein: be equipped with between flexible piece (28) and base (27) extrusion chamber (57), it is equipped with connecting channel (48) to be connected between extrusion chamber (57) and clearance chamber (14), flexible piece (28) circumference outside is equipped with annular member (55) that are used for plugging up connecting channel (48), be equipped with annular groove (15) that correspond with annular member (55) lower part on base (27), base (27) downside is equipped with drain (56) of being connected with the valve bottom (16) outside, drain (56) internal rotation is equipped with axis of rotation (49), axis of rotation (49) circumference outside is equipped with rotor plate (50) that are used for plugging up drain (56), the circumference outside of axis of rotation (49) is equipped with torsional spring (51).

10. The cutoff check valve according to claim 9, wherein: the two sides of the rotating plate (50) are respectively provided with a sliding block (52), a third spring (53) is connected between each sliding block (52) and the rotating plate (50), and a hydraulic channel (54) is connected between each sliding block (52) and the annular groove (15).