CN212107060U

CN212107060U - Check valve capable of preventing backflow and blocking

Info

Publication number: CN212107060U
Application number: CN202020797384.5U
Authority: CN
Inventors: 仝道龙
Original assignee: Anhui Stream Well Valve Co ltd
Current assignee: Anhui Stream Well Valve Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-12-08
Anticipated expiration: 2030-05-13

Abstract

The utility model discloses a prevent check valve of jam against current, which comprises a valve body, the upper end of valve body is provided with the valve gap, the valve gap adopts sealed the pad to seal on the valve body through the bolt, the inner wall of valve gap is provided with prevents against current mechanism, prevent against current the inboard that mechanism is located the valve body and seal the through-hole department that sets up in the valve body, the filter screen is installed to the feed liquor end of valve body, one side of filter screen is provided with prevents blockking up the mechanism, prevent blockking up the mechanism and install on the valve body, the one end that the valve body is close to the filter screen is provided with the blanking mouth. The utility model discloses a prevent check valve of jam against current can prevent through preventing against current mechanism that the fluid is against the current and prevent against the current effectual, clears away the plug on the filter screen through clear stifled tooth piece to make the plug fall into through the blanking mouth under self action of gravity and collect in collecting the storehouse, can prevent through preventing that jam mechanism that the filter screen from blockking up, can provide abundant guarantee for the normal operating of valve body.

Description

Check valve capable of preventing backflow and blocking

Technical Field

The utility model relates to a check valve technical field specifically is a prevent check valve of jam against current.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved. The disadvantages are high resistance and poor sealing performance when closed.

The existing check valve has poor anti-backflow effect when in use, and meanwhile, the check valve is easy to block and further influences the normal operation of the check valve due to the fact that the anti-blocking mechanism is not provided, so that the problem is solved by urgently needing the anti-backflow anti-blocking check valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent check valve of jam against current, can prevent the fluid against the current and prevent against the current effectual through preventing against current mechanism, clear away the plug on the filter screen through clear stifled tooth piece to make the plug fall into the collection storehouse through the blanking mouth under self action of gravity and collect, can prevent through preventing that the mechanism from preventing that the filter screen from blockking up, can provide abundant guarantee for the normal operating of valve body, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a backflow-preventing and blockage-preventing check valve comprises a valve body, wherein a liquid inlet is formed in one end of the valve body, a liquid outlet is formed in the other end of the valve body, a valve cover is arranged at the upper end of the valve body and is sealed on the valve body through a sealing gasket through bolts, a backflow-preventing mechanism is arranged on the inner wall of the valve cover and is located on the inner side of the valve body and sealed in a through hole formed in the valve body, a filter screen is installed at the liquid inlet end of the valve body, a blockage-preventing mechanism is arranged on one side of the filter screen and is installed on the valve body, a blanking port is formed in one end, close to the filter screen, of the valve body, a collecting bin is arranged at the;

the anti-reflux mechanism comprises a telescopic spring, a telescopic guide post and a valve clack, wherein two ends of the telescopic spring and the telescopic guide post are respectively connected to the valve cover and the valve clack, and the valve clack is arranged on the side surface of the through hole and seals the through hole;

prevent blockking up the mechanism and include driving motor, rotation axis, bevel gear A, bevel gear B, lead screw, spacing platform, backup pad and clear stifled subassembly, driving motor installs on the outer wall of valve body, driving motor's output shaft has the rotation axis through the coupling joint, install bevel gear A on the rotation axis, bevel gear A and bevel gear B mesh, bevel gear B passes through the spline and installs on the lead screw, the both ends of lead screw are all installed in the backup pad through the bearing, the both sides at spacing platform are installed to the backup pad, spacing platform parcel is in bevel gear B's periphery, threaded connection has clear stifled subassembly on the lead screw.

Preferably, the one end that the valve body is close to the filter screen is provided with the blanking mouth, blanking mouth department is provided with collects the storehouse, collect the storehouse and pass through self tapping screw fastening in the bottom of valve body.

Preferably, clear stifled subassembly is including removing the frame, clear stifled board and clear stifled tooth piece, remove a threaded connection on the lead screw, the one end that removes the frame runs through the backup pad and is connected with clear stifled board, install clear stifled tooth piece on the clear stifled board.

Preferably, the blockage removing tooth blocks are in a conical shape, the blockage removing tooth blocks correspond to the sieve meshes arranged on the filter screen in number, and the length of each blockage removing tooth block is larger than the thickness of the filter screen.

Preferably, overflow holes for fluid circulation are uniformly distributed on the blockage removing plate, and the overflow holes and the blockage removing tooth blocks are distributed in a crossed manner.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a prevent check valve of jam against current, liquid gets into the valve body from the inlet, when its liquid pressure is greater than expanding spring's elasticity, fluid promotes the valve clack and shifts up and make expanding spring and flexible guide post all shrink, the valve clack no longer shelters from the through-hole this moment, fluid passes through the through-hole and gets into in the liquid outlet and discharge from the liquid outlet, liquid gets into the valve body from the liquid outlet, because the valve clack shelters from the through-hole, make fluid can not pass through the through-hole, can prevent the fluid against the current, can prevent through preventing against the current mechanism that the fluid is against the.

2. The utility model discloses a prevent check valve of jam against current, driving motor drive rotation axis and bevel gear A are rotatory, because bevel gear A and bevel gear B mesh, therefore, bevel gear A is rotatory can drive bevel gear B and lead screw also synchronous revolution, the lead screw can drive the removal frame and translate under the guide effect of backup pad and then make clear stifled board and clear stifled tooth piece also translation at rotatory in-process, insert in the filter screen until clear stifled tooth piece, clear away the plug on the filter screen through clear stifled tooth piece, and make the plug fall into through the blanking mouth under self action of gravity and collect in collecting the storehouse, can prevent that the filter screen from blockking up through preventing blockking up the mechanism, can provide abundant guarantee for the normal operating of valve body.

Drawings

FIG. 1 is a schematic view of the anti-backflow and anti-clogging check valve of the present invention;

FIG. 2 is a schematic cross-sectional view of the anti-backflow and anti-clogging check valve of the present invention;

FIG. 3 is a schematic view of the check valve with the valve flap removed from the through hole of the present invention;

FIG. 4 is an enlarged view of the anti-jamming mechanism of the present invention;

FIG. 5 is an enlarged view of the blockage removing filter screen of the blockage removing tooth block of the utility model;

fig. 6 is a schematic view of the block clearing component of the present invention;

fig. 7 is a side view of the block removing plate of the present invention.

In the figure: 1. a valve body; 11. a liquid inlet; 12. a liquid outlet; 13. a through hole; 14. a blanking port; 2. a valve cover; 3. an anti-reflux mechanism; 31. a tension spring; 32. a telescopic guide post; 33. a valve flap; 4. filtering with a screen; 5. an anti-clogging mechanism; 51. a drive motor; 52. a rotating shaft; 53. a bevel gear A; 54. a bevel gear B; 55. a screw rod; 56. a limiting table; 57. a support plate; 58. clearing the blockage component; 581. a movable frame; 582. clearing the blockage; 5821. an overflow aperture; 583. clearing the blocking tooth block; 6. and collecting the bin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a backflow-preventing and blockage-preventing check valve comprises a valve body 1, one end of the valve body 1 is provided with a liquid inlet 11, the other end of the valve body 1 is provided with a liquid outlet 12, the upper end of the valve body 1 is provided with a valve cover 2, the valve cover 2 is sealed on the valve body 1 through a bolt and a sealing pad, the inner wall of the valve cover 2 is provided with a backflow-preventing mechanism 3, the backflow-preventing mechanism 3 is positioned at the inner side of the valve body 1 and sealed at a through hole 13 arranged in the valve body 1, the backflow-preventing mechanism 3 can prevent fluid backflow and has good backflow-preventing effect, the liquid inlet end of the valve body 1 is provided with a filter screen 4, one side of the filter screen 4 is provided with a blockage-preventing mechanism 5, the blockage-preventing mechanism 5 is arranged on the valve body 1, the filter screen 4 can, 14 departments of blanking mouth are provided with and collect storehouse 6, and collection storehouse 6 passes through self tapping screw fastening in the bottom of valve body 1, clears away the plug on the filter screen 4 through clear stifled tooth piece 583 to make the plug fall into through blanking mouth 14 under self action of gravity and collect in collecting storehouse 6, after collecting storehouse 6 and collecting the plug, can take out the plug through dismantling from valve body 1 in the storehouse 6 will be collected.

Referring to fig. 3, the anti-reverse flow mechanism 3 includes a telescopic spring 31, a telescopic guide post 32 and a valve flap 33, two ends of the telescopic spring 31 and the telescopic guide post 32 are respectively connected to the valve cover 2 and the valve flap 33, the valve flap 33 is installed on a side surface of the through hole 13 and seals the through hole 13, liquid enters the valve body 1 from the liquid inlet 11, when the liquid pressure is greater than the elastic force of the telescopic spring 31, the fluid pushes the valve flap 33 to move upward and make the telescopic spring 31 and the telescopic guide post 32 contract, at this time, the valve flap 33 does not block the through hole 13, the fluid enters the liquid outlet 12 through the through hole 13 and is discharged from the liquid outlet 12, the liquid enters the valve body 1 from the liquid outlet 12, because the valve flap 33 blocks the through hole 13, the fluid cannot pass through the through hole 13, the fluid can be prevented from reverse flow.

Referring to fig. 4-5, the anti-clogging mechanism 5 includes a driving motor 51, a rotating shaft 52, a bevel gear a53, a bevel gear B54, a screw rod 55, a limit table 56, a support plate 57 and a cleaning assembly 58, the driving motor 51 is installed on the outer wall of the valve body 1, an output shaft of the driving motor 51 is connected with the rotating shaft 52 through a coupling, the rotating shaft 52 is installed with the bevel gear a53, the bevel gear a53 is engaged with the bevel gear B54, the bevel gear B54 is installed on the screw rod 55 through a spline, both ends of the screw rod 55 are installed on the support plate 57 through bearings, the support plate 57 is installed on both sides of the limit table 56, the limit table 56 is wrapped on the periphery of the bevel gear B54, the screw rod 55 is connected with the cleaning assembly 58 through a thread, the driving motor 51 drives the rotating shaft 52 and the bevel gear a53 to rotate, because the bevel gear a53 is engaged, the screw 55 can drive the blockage removing component 58 to move in the rotating process, so that the blockage removing component 58 can remove the blockage on the filter screen 4.

Referring to fig. 6-7, the blockage removing assembly 58 comprises a moving frame 581, a blockage removing plate 582 and a blockage removing tooth block 583, the moving frame 581 is connected to the screw rod 55 through threads, one end of the moving frame 581 is connected with the blockage removing plate 582 through the supporting plate 57, the blockage removing tooth block 583 is installed on the blockage removing plate 582, overflow holes 5821 for fluid circulation are uniformly distributed on the blockage removing plate 582, the blockage removing tooth block 583 is in a conical shape, the blockage removing tooth block 583 corresponds to the number of sieve holes arranged on the filter screen 4, the length of the blockage removing tooth block 583 is larger than the thickness of the filter screen 4, the screw rod 55 can drive the moving frame 581 to translate under the guiding effect of the supporting plate 57 so that the blockage removing plate 582 and the blockage removing tooth block 583 also translate until the blockage removing tooth block 583 is inserted into the filter screen 4, the blockage on the filter screen 4 is removed through the blockage removing tooth block 583, and the blockage falls into the collecting bin 6 through the material outlet 14 under the action of self gravity, the anti-blocking mechanism 5 can prevent the filter screen 4 from being blocked, and can provide sufficient guarantee for the normal operation of the valve body 1.

To sum up, the utility model discloses a prevent check valve of jam against current, liquid gets into in the valve body 1 from inlet 11, when its liquid pressure is greater than expanding spring 31's elasticity, fluid promotes valve clack 33 and moves up and make expanding spring 31 and flexible guide post 32 all shrink, valve clack 33 no longer shelters from through-hole 13 this moment, fluid gets into in liquid outlet 12 and discharges from liquid outlet 12 through-hole 13, liquid gets into in the valve body 1 from liquid outlet 12, because valve clack 33 shelters from through-hole 13, make fluid can not pass through-hole 13, can prevent fluid countercurrent and prevent against the adverse current effectual through preventing against the adverse current mechanism 3, driving motor 51 drive rotation axis 52 and bevel gear A53 are rotatory, because bevel gear A53 meshes with bevel gear B54, consequently, bevel gear A53 is rotatory can drive bevel gear B54 and lead screw 55 also synchronous revolution, lead screw 55 can drive movable rack 581 in rotatory in-process and translate under the guide effect of backup pad 57 and make clear plate 582 and clear tooth piece 583 also And until the blockage removing tooth block 583 is inserted into the filter screen 4, the blockage on the filter screen 4 is removed through the blockage removing tooth block 583, the blockage falls into the collection bin 6 through the blanking port 14 under the action of self gravity and is collected, the blockage of the filter screen 4 can be prevented through the blockage preventing mechanism 5, and sufficient guarantee can be provided for the normal operation of the valve body 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent check valve of jam against current, includes valve body (1), its characterized in that: a liquid inlet (11) is formed in one end of the valve body (1), a liquid outlet (12) is formed in the other end of the valve body (1), a valve cover (2) is arranged at the upper end of the valve body (1), the valve cover (2) is sealed on the valve body (1) through a sealing gasket through a bolt, an anti-backflow mechanism (3) is arranged on the inner wall of the valve cover (2), the anti-backflow mechanism (3) is located on the inner side of the valve body (1) and sealed at a through hole (13) formed in the valve body (1), a filter screen (4) is installed at the liquid inlet end of the valve body (1), an anti-blocking mechanism (5) is arranged on one side of the filter screen (4), and the anti-blocking mechanism (5;

the anti-reflux mechanism (3) comprises a telescopic spring (31), a telescopic guide column (32) and a valve clack (33), two ends of the telescopic spring (31) and the telescopic guide column (32) are respectively connected to the valve cover (2) and the valve clack (33), and the valve clack (33) is installed on the side surface of the through hole (13) and seals the through hole (13);

the anti-blocking mechanism (5) comprises a driving motor (51), a rotating shaft (52), a bevel gear A (53), a bevel gear B (54), a screw rod (55), a limiting table (56), a supporting plate (57) and a blocking cleaning component (58), the driving motor (51) is arranged on the outer wall of the valve body (1), an output shaft of the driving motor (51) is connected with a rotating shaft (52) through a coupling, a bevel gear A (53) is arranged on the rotating shaft (52), the bevel gear A (53) is meshed with a bevel gear B (54), the bevel gear B (54) is arranged on a screw rod (55) through a spline, both ends of the screw rod (55) are arranged on a supporting plate (57) through bearings, the supporting plates (57) are installed on two sides of the limiting table (56), the limiting table (56) wraps the periphery of the bevel gear B (54), and the screw rod (55) is in threaded connection with a blockage removing assembly (58).

2. The backflow-preventing and clogging-preventing check valve according to claim 1, wherein: one end of the valve body (1) close to the filter screen (4) is provided with a blanking port (14), the blanking port (14) is provided with a collecting bin (6), and the collecting bin (6) is fastened at the bottom end of the valve body (1) through self-tapping screws.

3. The backflow-preventing and clogging-preventing check valve according to claim 1, wherein: clear stifled subassembly (58) including removing frame (581), clear stifled board (582) and clear stifled tooth piece (583), remove frame (581) threaded connection on lead screw (55), the one end of removing frame (581) is run through backup pad (57) and is connected with clear stifled board (582), install clear stifled tooth piece (583) on clear stifled board (582).

4. The backflow-preventing and clogging-preventing check valve according to claim 3, wherein: the blockage removing tooth blocks (583) are in a conical shape, the blockage removing tooth blocks (583) correspond to the sieve meshes arranged on the filter screen (4), and the length of the blockage removing tooth blocks (583) is larger than the thickness of the filter screen (4).

5. The backflow-preventing and clogging-preventing check valve according to claim 3, wherein: the blockage removing plate (582) is also uniformly distributed with overflow holes (5821) for fluid circulation, and the overflow holes (5821) and the blockage removing tooth blocks (583) are distributed in a crossed manner.