CN213776484U

CN213776484U - Intelligent quick-opening slow-closing check valve with inclined seat

Info

Publication number: CN213776484U
Application number: CN202022919045.2U
Authority: CN
Inventors: 吴可天; 惠海强
Original assignee: Zhengzhou Zhengvalve Machinery Co ltd
Current assignee: Zhengzhou Zhengvalve Machinery Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-07-23
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses an intelligent sloping seat slow-closure check valve that opens soon belongs to water pump valve technical field, including parts such as intelligent control module, linking bridge, valve body, valve plate, valve shaft, the ring flange on bolt and the valve body for the linking bridge is connected fixedly, and the valve plate passes through the valve shaft and installs in the runner of valve body in the lump to open/close the runner, the valve shaft is located the outer one end (spindle nose) of valve body and connects the linkage through the parallel key, and the slow-closure crank on the linkage is connected with the slow-closure subassembly, and the fast-opening crank is connected with the fast-opening subassembly, and the balancing pole is connected with the counter weight, and the quick-opening subassembly action of intelligent control module control. The utility model discloses increased intelligent control module, opened the subassembly fast and start/stop pump signal detecting element on original oblique seat slow closure check valve basis, overcome that the valve plate opening angle of the check valve that slowly closes before is little, head loss is big, power loss is high, slowly close the not obvious disadvantage such as effect, be most advanced at present, slowly close the best, the most intelligent oblique seat formula slow closure check valve of effect.

Description

Intelligent quick-opening slow-closing check valve with inclined seat

Technical Field

The utility model belongs to the technical field of the water pump valve, concretely relates to intelligent inclined seat slow-open-close check valve.

Background

The check valve medium flows in from the inlet end (lower side) and out from the outlet end (upper side), and the valve is opened when the inlet pressure is greater than the sum of the weight of the valve plate and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The existing check valve has the defects of small opening angle of a valve plate, small water flow, large head loss and unobvious slow closing effect.

When a water pump is just started to be installed and operated or the user quantity is not large, the water pump is opened, the water flow is small, the inlet pressure is not enough to enable the valve to be completely unopened, so that only a part of the valve is opened, the slow closing crank cannot go through the idle groove on the connecting rod of the slow closing oil cylinder, namely, the piston rod of the slow closing oil cylinder is not pulled out at all, therefore, when the water pump is turned off, the slow closing crank only moves in the idle groove, the piston rod of the slow closing oil cylinder has no effective stroke, and the slow closing effect cannot be achieved at all.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a slowly close effectual, fast open effectual intelligent sloping seat fast open slowly close check valve, solved traditional slowly close check valve because the valve plate opening angle little valve plate that reason such as the water pressure is low, rivers are little can not open completely, slowly close the obscure problem of effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an intelligent inclined seat quick-opening slow-closing check valve comprises a valve body, a valve shaft and a valve plate, wherein a connecting support is connected to the valve body, one end of the valve shaft extends into the valve body, the valve shaft positioned in the valve body is connected with the valve plate, the valve shaft positioned outside the valve body is connected with a linkage piece in a key mode to drive the valve shaft to rotate, the linkage piece comprises a slow-closing crank, a balancing rod and a quick-opening crank, and one end, far away from the valve shaft, of the slow-closing crank is connected with a slow-closing assembly arranged on the connecting support; the balance rod is connected with a balance weight, and one end of the quick-opening crank, which is far away from the valve shaft, is connected with a quick-opening assembly arranged on the connecting bracket; still include intelligent control module, intelligent control module includes the controller and is used for detecting the runner of valve body and intakes end and the hydraulic pressure differential detection unit of play water end, pressure differential detection unit's signal output is connected with the signal input of controller, the signal output of controller connects the subassembly of opening soon, and then control the subassembly action of opening soon.

Furthermore, the quick-opening assembly comprises a cylinder, the cylinder is installed on the connecting support through a hinge shaft seat I, a connector at the tail end of the cylinder is connected with an inflator pump through a hose, an electromagnetic valve is arranged on a gas port at the front end of the cylinder, and a piston rod of the cylinder is hinged to the quick-opening crank.

Furthermore, a silencer is arranged at an exhaust port of the electromagnetic valve.

Furthermore, the slow-closing assembly comprises a slow-closing oil cylinder, the slow-closing oil cylinder is installed in the connecting support through a hinge shaft seat II, a connecting rod is connected to a piston rod of the slow-closing oil cylinder, an idle groove is formed in the connecting rod, and one end, far away from the valve shaft, of the slow-closing crank is connected with the idle groove in a sliding mode.

Furthermore, one end of the connecting rod, which is far away from the slow-closing oil cylinder, is provided with an adjusting bolt for adjusting the effective length of the idle groove.

Furthermore, an indication arrow used for indicating the position of the valve opening/closing valve is arranged at the end part of one end, extending out of the valve body, of the valve shaft, and an opening degree indication plate matched with the indication arrow is arranged on the connecting support.

Furthermore, a control box is further installed on the connecting support, and the controller and the inflator pump are installed in the control box.

The device further comprises a position detection unit and an indication unit, wherein the signal output of the position detection unit is connected with the signal input end of the controller, and the signal output of the controller is connected with the signal input end of the indication unit; the position detection unit comprises a first position detection switch for detecting whether the valve plate is opened in place or not and a second position detection switch for detecting whether the valve plate is closed in place or not, and the indicating unit comprises an open position indicating lamp, an off position indicating lamp and a power supply indicating lamp.

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

1. the utility model discloses a to slowly close the subassembly, open the subassembly soon and combine with the intelligent control module, can control the valve plate according to the use place demand and open soon, close slowly, realize intelligent control's purpose, solved traditional slowly close the check valve and opened because of the valve plate is not completely when opening the pump, when leading to closing the pump, the crank only removes in the idle running inslot, does not play the problem of slowly closing the effect at all. The utility model discloses improve water pump efficiency by a wide margin, can effectively realize slowly closing the purpose, improve the guarantee for water pump safe operation. The inclined seat type slow-closing check valve overcomes the defects of small opening angle of a valve plate, large head loss, high power loss, unobvious slow-closing effect and the like of the prior slow-closing check valve caused by low pressure of a water pump, small water flow and the like, and is the most advanced, best in slow-closing effect and most intelligent at present.

2. The utility model discloses can be according to the demand, through rotatory adjusting bolt, the effective length in adjustment idle running groove reaches the purpose of adjusting valve plate closing time.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a connection structure between the slowly-closed cylinder and the linkage member of the present invention;

FIG. 3 is a schematic view of the connection structure of the valve shaft, the valve body and the valve plate of the present invention;

FIG. 4 is a schematic structural view of a linkage member of the present invention;

fig. 5 is a schematic structural view of the connection between the slowly-closing cylinder and the connecting rod of the present invention;

fig. 6 is a control schematic diagram of the control system of the present invention;

in the figure: the valve comprises a valve body 100, a valve shaft 200, an indication arrow 201, a key groove 202, a valve plate 300, a connecting support 400, an opening degree indication plate 401, a linkage piece 500, a slow closing crank 501, a fast opening crank 502, a balance rod 503, a balance weight 504, a slow closing oil cylinder 601, a connecting rod 602, an idle groove 603, an air cylinder 700, an electromagnetic valve DF, a control box 800 and a differential pressure switch 900.

Detailed Description

For a better understanding of the present invention by those skilled in the art, the present invention will be further described with reference to the following detailed description:

as shown in fig. 1-6, an intelligent inclined seat quick-opening slow-closing check valve comprises a valve body 100, a valve shaft 200 and a valve plate 300, wherein a connecting bracket 400 is fixed on a connecting flange of the valve body 100 by bolts, one end of the valve shaft 200 extends into the valve body, the valve plate 300 is connected on the valve shaft 200 positioned in the valve body 100 through a taper pin, a key groove 202 is arranged on the valve shaft 200 (shaft head) positioned outside the valve body 100, the valve shaft 200 drives a linkage member 500 for rotating the valve shaft 200 through a flat key connection, and the linkage member 500 and the valve shaft 200 move synchronously so that the valve plate 300 on the valve shaft 200 opens/closes a flow passage in the valve body 100.

The linkage 500 comprises a slow-closing crank 501, a balancing rod 503 and a quick-opening crank 502, one end, far away from the valve shaft 200, of the slow-closing crank 501 is connected with a slow-closing assembly arranged on the connecting support 400, specifically, the slow-closing assembly comprises a slow-closing oil cylinder 601, the slow-closing oil cylinder 601 is arranged in the connecting support 400 through a hinge shaft seat II, the hinge shaft seat II is fixedly connected with the connecting support 400, and the hinge shaft seat II is rotatably connected with the slow-closing oil cylinder 601 so that the slow-closing oil cylinder 601 can move relative to the hinge shaft seat II.

A connecting rod 602 is connected to a piston rod of the slow-closing cylinder 601 through a thread, an empty slot 603 is arranged on the connecting rod 602, one end of the slow-closing crank 501, which is far away from the valve shaft 200, is slidably connected with the empty slot 603 through a pin shaft (one end of the pin shaft is connected with the slow-closing crank, and the other end of the pin shaft is slidably connected with the empty slot), an adjusting bolt 604 for adjusting the effective length of the empty slot 603 is arranged at one end of the connecting rod 602, which is far away from the slow-closing cylinder 601, when the slow-closing cylinder is used, the adjusting bolt 604 is rotated forward and backward to change the length of the slow-closing crank extending into the empty slot 603, so as to adjust the effective length of the empty slot 603, and due to different effective lengths of the empty slot 603, the slow-closing crank 501 has different time for walking the empty slot 603, and the purpose of adjusting and controlling the closing time can be indirectly achieved.

The balance bar 503 is connected with a balance weight 504, and when the valve plate 300 is closed, the valve plate 300 is under the action of self weight, so that the flow channel in the valve body 100 can not be completely closed, and the problem of incomplete closing of the valve plate 300 can be solved by arranging the balance weight 504.

The one end that opens crank 502 soon and keep away from valve shaft 200 is connected with the subassembly of opening soon of installing on linking bridge 400, and the subassembly of opening soon includes cylinder 700, and cylinder 700 is installed on linking bridge 400 through hinge axle seat I, and cylinder 700 is installed in linking bridge 400 through hinge axle seat I, hinge axle seat I and linking bridge 400 fixed connection, hinge axle seat I and cylinder 700 rotate and be connected to make cylinder 701 can be the I activity of hinge axle seat relatively. The tail end interface of the cylinder 700 is connected with an inflator pump through a hose, an electromagnetic valve DF is arranged on an air port at the front end of the cylinder 700, a silencer is arranged at an air outlet of the electromagnetic valve DF, and a piston rod of the cylinder 701 is hinged with the quick-opening crank 502.

An indication arrow 201 for indicating the open/close valve position is provided at one end of the valve shaft 200 extending out of the valve body, and an opening degree indication plate 401 adapted to the indication arrow 201 is provided on the connecting bracket 400. When the valve shaft 200 rotates, the indication arrow 201 moves synchronously with the valve shaft 200, and the condition of the opening/closing position of the valve plate 300 can be conveniently and visually seen by a worker by observing the position indicated by the indication arrow 201 on the opening degree indication plate 401.

The connecting bracket 400 is also connected with a control box 800, and a controller and an inflator pump are installed in the control box 800.

The intelligent control device comprises an intelligent control module, the intelligent control module comprises a controller, a pressure difference detection unit for detecting the pressure difference between the water inlet end and the water outlet end of the flow channel of the valve body 100, a position detection unit for detecting whether the valve plate 300 is opened/closed in place or not, and an indication unit, the pressure difference detection unit comprises a pressure difference switch 900, the pressure difference switch is provided with two water inlet interfaces and a signal feedback line, the two interfaces are respectively connected with the water inlet end and the water outlet end of the valve body 100, and a water flow pressure signal for starting/stopping the pump is detected and fed back to the controller in the control box 800 through a signal line.

The position detection unit comprises a first position detection switch for detecting whether the open valve is in place or not and a second position detection switch for detecting whether the closed valve is in place or not, and the indicating unit comprises an open position indicator lamp L1, an off position indicator lamp L2 and a power indicator lamp L3.

The signal outputs of the pressure difference detection unit and the position detection unit are connected with the signal input of the controller, and the signal output of the controller is respectively in electrical communication with the connecting electromagnet DF, the inflator pump QB and the indicating unit.

The working principle is as follows: when the power supply is connected, the power supply indicator light L3 is on, when the water pump is started, the pressure difference exists between the water inlet port and the water outlet port of the valve body (the water pressure of the water inlet port of the valve body is larger than that of the water outlet port), the pressure difference detection unit sends a detected pressure difference signal to the controller, the pressure difference switch acts, the controller controls the action of the cylinder (the switch K1 is closed, the electromagnetic valve DF is electrified, the exhaust port of the cylinder is closed, the relay KA1 is electrified, the relay KA1 is normally open and closed, the inflator is electrified, the cylinder inflates the cylinder), the quick-opening crank is pulled by the cylinder, the valve shaft rotates anticlockwise under the action of the water flow thrust and the action of the cylinder, the valve shaft drives the slow-closing crank to quickly run off the empty running groove, the slow-closing crank pulls the connecting rod after the empty running groove is run off, and further, the piston rod of the slow-closing cylinder is pulled out (when the piston cylinder of the slow-closing cylinder is pulled out, the resistance is small, and the piston cylinder of the slow-closing cylinder is pushed in, the resistance received is large) so that the valve plate is fully opened.

When the first position detection switch detects that the valve is opened in place, the open switch K2 is closed, a signal is given, the coil of the relay II KA2 is electrified, the normally closed contact of the relay II KA2 is disconnected, the coil of the relay I KA1 connected with the normally closed contact of the relay II KA2 in series is electrified, the normally open contact of the relay I KA1 is disconnected, and the charge pump QB is electrified and stops working; meanwhile, when the first position detection switch detects that the valve is opened in place, the open position switch K2 is closed, the open position indicator lamp L1 is lightened, the rapid valve opening action is completed, and at the moment, the indication arrow points at the opening position on the opening degree indication board.

When the water pump is closed, media flow backwards, pressure difference exists between a water inlet port and a water outlet port of the valve body (the outlet pressure of the valve body is larger than the inlet pressure), a pressure difference detection unit sends a detected pressure difference signal to a controller, a pressure difference switch acts, and the controller controls the electromagnetic valve DF to lose power to open an air outlet of the air cylinder; the valve shaft rotates clockwise under the action of the dead weight of the valve plate, the hydraulic return force and the gravity of the balance weight, and drives the slowly-closed crank to slide in the empty slot of the connecting rod, the slowly-closed crank is quickly closed to 65-80% of the whole closing stroke (when the slowly-closed crank finishes the effective stroke of the empty slot, 65-80% of the total effective stroke is finished), the specific position can be adjusted through an adjusting bolt according to the actual working condition, the total effective stroke is completely closed by the valve plate, and the slowly-closed crank needs to move, so that most of water flow is cut off, the connecting rod is pushed after the slowly-closed crank finishes the empty slot, when a piston rod of the slowly-closed oil cylinder is pushed into the slowly-closed oil cylinder, the valve is subjected to the damping effect of the slowly-closed oil cylinder, and the valve starts to be slowly closed.

When the second position detection switch detects that the valve is closed in place, the off-position switch K3 is closed, the off-position indicator lamp L2 is lightened, the slow valve closing process is completed, and at the moment, the indication arrow points at the closed position on the opening indicator.

As shown in the control schematic diagram of fig. 6, a first terminal of an inflator QB is connected with a zero line N, a second terminal of the inflator QB is connected with one end of a normally open contact of a first relay KA1, and the other end of the normally open contact of the first relay KA1 is connected with a live line L; one end of a terminal of the electromagnetic valve DF is connected with a live wire L, the other end of the terminal of the electromagnetic valve DF is connected with a first end of a switch K1, a second end of a switch K1 is connected with a zero line N, and a first end of a switch K1 is connected with the live wire L sequentially through a normally closed contact of a relay II KA2 and a coil of a relay I KA 1; one end of a coil of the second relay KA2 is connected with the live wire L, the other end of the coil of the second relay KA2 is connected with the first end of the on-position switch K2, the second end of the on-position switch K2 is connected with the zero wire N, the first end of the on-position switch K2 is further connected with the live wire L through an on-position indicator lamp L1, a first terminal of an off-position indicator lamp L2 is connected with the live wire L, and a second terminal of an off-position indicator lamp L2 is connected with the zero wire through an off-position switch K3; two terminals of the power indicator light L3 are respectively connected with the live wire L and the zero wire N. The intelligent control module further comprises an electrical control box installed on the rack, and the first relay KA1 and the second relay KA2 are installed in the electrical control box.

Wherein, the first position detection switch and the second position detection switch both adopt proximity switches with model number PR12-4 AO/AC/220V; the model of the inflator pump QB is PN 0.6 MPa/AC/220V; the model of the electromagnetic valve DF is 2W-160-15K/AC/220V; the model of the cylinder is SC80 multiplied by 200; the model of the differential pressure switch is MPDS 650/AC/200V/5A; an electrical control box DKZHF.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, and any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an intelligent sloping seat fast-opening slow-closing check valve, includes valve body (100), valve shaft (200), valve plate (300), be connected with linking bridge (400) on valve body (100), valve shaft (200) one end stretches into valve body (100), is connected with valve plate (300) on valve shaft (200) that is located valve body (100), and key-type connection drives linkage (500) that valve shaft (200) rotated on valve shaft (200) that is located outside valve body (100), characterized in that, linkage (500) include slow-closing crank (501), balancing pole (503) and fast-opening crank (502), the one end that valve shaft (200) was kept away from to slow-closing crank (501) is connected with the slow-closing subassembly of installing on linking bridge (400); the balance rod (503) is connected with a balance weight (504), and one end of the quick-opening crank (502) far away from the valve shaft (200) is connected with a quick-opening assembly arranged on the connecting bracket (400); still include intelligent control module, intelligent control module includes the controller and is used for detecting the runner of valve body and intakes end and the hydraulic pressure differential detection unit of play water end, pressure differential detection unit's signal output is connected with the signal input of controller, the signal output of controller connects the subassembly of opening soon, and then control the subassembly action of opening soon.

2. The intelligent inclined-seat quick-opening slow-closing check valve according to claim 1, wherein the quick-opening assembly comprises a cylinder (700), the cylinder (700) is mounted on the connecting support (400) through a hinge shaft seat I, a tail end interface of the cylinder (700) is connected with an inflator pump QB through a hose, an electromagnetic valve DF is arranged on an air port at the front end of the cylinder (700), and a piston rod of the cylinder (700) is hinged to a quick-opening crank (502).

3. The intelligent inclined-seat quick-opening slow-closing check valve as claimed in claim 2, wherein a muffler is arranged at an exhaust port of the solenoid valve DF.

4. The intelligent inclined-seat quick-opening slow-closing check valve according to claim 3, wherein the slow-closing assembly comprises a slow-closing oil cylinder (601), the slow-closing oil cylinder (601) is installed in the connecting support (400) through a hinge seat II, a connecting rod (602) is connected to a piston rod of the slow-closing oil cylinder (601), an idle groove (603) is formed in the connecting rod (602), and one end, far away from the valve shaft (200), of a slow-closing crank (501) is connected with the idle groove (603) in a sliding mode.

5. The intelligent inclined-seat quick-opening slow-closing check valve as claimed in claim 4, wherein an adjusting bolt (604) for adjusting the effective length of the idle groove (603) is arranged at one end of the connecting rod (602) far away from the slow-closing oil cylinder (601).

6. The intelligent inclined-seat quick-opening slow-closing check valve as claimed in claim 5, wherein an indication arrow (201) for indicating the position of the valve opening/closing valve is arranged at one end of the valve shaft (200) extending out of the valve body (100), and an opening indicator (401) matched with the indication arrow (201) is arranged on the connecting bracket (400).

7. The intelligent inclined-seat quick-opening slow-closing check valve according to claim 6, characterized in that a control box (800) is further installed on the connecting bracket (400), and the controller and the inflator QB are installed in the control box (800).

8. The intelligent quick-opening slow-closing check valve with the inclined seat as claimed in any one of claims 1 to 7, further comprising a position detection unit and an indication unit, wherein a signal output of the position detection unit is connected with a signal input end of a controller, and a signal output of the controller is connected with a signal input end of the indication unit; the position detection unit comprises a first position detection switch for detecting whether the valve plate (300) is opened in place or not and a second position detection switch for detecting whether the valve plate (300) is closed in place or not, and the indicating unit comprises an open position indicator lamp L1, an off position indicator lamp L2 and a power indicator lamp L3.