CN210218812U

CN210218812U - Check valve with replaceable valve core

Info

Publication number: CN210218812U
Application number: CN201920637440.6U
Authority: CN
Inventors: ce Xiang; 项策
Original assignee: Jaden Valve Fittings Co Ltd
Current assignee: Jaden Valve Fittings Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-03-31
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a check valve with a replaceable valve core, which comprises a valve body and a valve cover, wherein a flow passage is arranged in the valve body, a valve rod is arranged on the valve cover, a valve core is arranged on the valve rod, the flow passage is provided with a sealing port, the valve core consists of a valve core end cover and a sealing movable seat, a movable cavity is arranged in the valve core end cover, a limiting convex ring is fixedly arranged at the upper end of the valve core end cover, the sealing movable seat is connected with the lower end of the valve core end cover through a locking piece, and the sealing movable seat is matched with the sealing; the lower end of the valve core end cover is provided with a positioning groove, a positioning ejector rod and a driving spring are arranged in the positioning groove, the positioning ejector rod is located at the notch of the positioning groove, the sealing movable seat is provided with a positioning notch matched with the positioning ejector rod in position, one end of the driving spring is fixed in the positioning groove, and the other end of the driving spring is fixedly connected with the positioning ejector rod. The utility model has the advantages of it is following and effect: the valve core with sealing failure can be conveniently replaced by a user, the whole check valve does not need to be replaced, and the check valve has the advantage of saving resources.

Description

Check valve with replaceable valve core

Technical Field

The utility model relates to the technical field of valves, in particular to check valve of removable case.

Background

The check valve is a valve which is used for preventing the media from flowing backwards by automatically opening and closing a valve clack depending on the flow of the fluid media. Can be divided into a lifting check valve, a swing check valve and a butterfly check valve according to the structure.

The existing check valve is often sealed by tightly abutting a valve core and a valve body, but in the long-term use process, the problem of fatigue accumulation is easy to occur on the valve core, so that a gap is generated between the valve core and the valve body when the valve core and the valve body are sealed, and the internal leakage phenomenon of the check valve is caused. The general solution is to change whole check valve, but just so caused the waste of resource, if only change the case alone, then to current check valve, have the big problem of change operation degree of difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a check valve of removable case can convenience of customers change the case of sealed inefficacy, need not to change whole check valve, has resources are saved's advantage.

The above technical purpose of the present invention can be achieved by the following technical solutions: a check valve with a replaceable valve core comprises a valve body and a valve cover arranged at the upper end of the valve body, wherein a flow channel for fluid medium to flow is formed in the valve body, a valve rod penetrating through the flow channel is vertically arranged on the valve cover, a valve core is arranged at one end, located at the flow channel, of the valve rod, the flow channel is provided with a sealing port in sealing fit with the valve core, the valve core consists of a valve core end cover and a sealing movable seat, a movable cavity for the valve rod to slide along the axial direction of the valve core end cover is formed in the valve core end cover, a limiting convex ring for preventing the valve rod from being separated is fixedly arranged at the upper end of the valve core end cover, the sealing movable seat is connected with the lower end of the valve core end cover through a locking piece, and; the lower end of the valve core end cover is provided with at least one positioning groove with a notch facing the sealing movable seat, a positioning ejector rod and a driving spring are arranged in the positioning groove, the positioning ejector rod is located at the notch of the positioning groove, the sealing movable seat is provided with a positioning notch matched with the positioning ejector rod in position, one end of the driving spring is fixed in the positioning groove, the other end of the driving spring is fixedly connected with the positioning ejector rod, and the positioning ejector rod has a tendency of moving towards the positioning notch through self reset acting force.

Further setting the following steps: the locking piece be the screw, case end cover and sealed movable seat all set up and supply the screw male locking hole, and the inner periphery in each locking hole all be provided with and constitute screw-thread fit's screw with the screw.

Further setting the following steps: the two locking pieces are symmetrically distributed along the central shaft of the valve core end cover respectively.

Further setting the following steps: and the lower end of the valve core end cover is fixedly provided with a sealing washer, and the sealing washer is provided with through holes for the locking pieces and the positioning ejector rod to pass through.

Further setting the following steps: the upper end of the valve cover is provided with an actuator for driving the valve rod to realize reciprocating movement along the axial direction of the valve rod.

Further setting the following steps: the valve core end cover is provided with a buffer block protruding towards the valve rod in the movable cavity.

The utility model has the advantages that:

1. the valve core is used for being matched with the sealing port to seal the flow passage, so that the valve core can be frequently contacted with the sealing port, and fatigue can be caused by long-term flushing of fluid media to cause sealing failure; the event is to this condition, the utility model discloses well case comprises case end cover and sealed sliding seat, and sealed sliding seat is used for cooperating with sealed mouthful, and can change its dismantlement alone after sealed sliding seat uses for a long time and takes place tired, need not to change whole valve body, accords with the trend of present resource-saving society.

2. The valve core end cover and the sealing movable seat are fixedly connected through the screw, the valve core end cover and the sealing movable seat have the advantages of being easy to operate and replace, and the stability of the valve core end cover and the sealing movable seat is guaranteed due to the fastening performance brought by the screw.

3. In order to ensure that the valve core end cover is aligned more accurately with the sealing movable seat during installation, a positioning ejector rod and a driving spring are arranged on the lower end face of the valve core end cover, a positioning notch is formed in the sealing movable seat, the driving spring can drive the positioning ejector rod to move towards the positioning notch, and the positioning ejector rod is inserted into the positioning notch to realize positioning during installation. Through the alignment cooperation of location ejector pin and location breach, improve the rotation smoothness nature of screw, promoted the efficiency of assembly especially, provide the basis for subsequent automatic volume production.

4. The lower end of the valve core end cover is fixedly provided with the sealing washer, and the sealing washer is easy to elastically deform under the action of a compression load, so that the sealing washer fills up the small unevenness between the valve core end cover and the sealing movable seat, the gap between the valve core end cover and the sealing movable seat is effectively compensated, the impact resistance is improved, and the assembly is more stable.

5. The movable cavity can be used for the valve rod to move up and down, and the valve rod is limited through the limiting convex ring, so that the valve rod can drive the valve core to move and can not be separated from the movable cavity, and the valve core can be adjusted. Therefore, the utility model discloses have the effect of dual regulation, during normal use, the valve rod lower extreme does not offset with the bottom in activity chamber, and the case can seal the sealing port under the effort of gravity to the realization dams to the automation of fluid medium, has promoted this check valve's practicality. When the sealing opening is to be sealed well, the acting force is applied to the valve core towards the direction of the sealing opening through the actuator, so that the valve core can be better abutted against the sealing opening, and the check valve can be better sealed.

6. When fluid medium in the valve body applies impact acting force to the valve core towards the direction of the valve rod, the impact force applied to the valve rod by the valve core end cover can be reduced through the arrangement of the buffer piece, and therefore the service lives of the valve core end cover and the valve rod are prolonged.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 1. a valve body; 11. an actuator; 2. a valve cover; 3. a flow channel; 30. sealing the opening; 4. a valve stem; 40. a limiting bump; 5. a valve core; 51. a valve core end cover; 510. a movable cavity; 511. a limit convex ring; 512. a buffer block; 52. sealing the movable seat; 6. positioning a groove; 61. a drive spring; 62. positioning the ejector rod; 7. positioning the notch; 8. a locking member; 81. a locking hole; 9. a gasket is provided.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a check valve with a replaceable valve core comprises a valve body 1 and a valve cover 2 arranged at the upper end of the valve body 1, a flow passage 3 for a fluid medium to flow is formed in the valve body 1, a valve rod 4 penetrating the flow passage 3 is vertically arranged on the valve cover 2, a valve core 5 is arranged at one end, located in the flow passage 3, of the valve rod 4, and the flow passage 3 is provided with a sealing opening 30 which is in sealing fit with the valve core 5. The above structure is the basic structure of the check valve, and belongs to the prior art, so it is not described here.

The valve core 5 is composed of a valve core end cover 51 and a sealing movable seat 52, a movable cavity 510 for the valve rod 4 to slide along the axial direction is arranged in the valve core end cover 51, a limit convex ring 511 for preventing the valve rod 4 from dropping off is fixedly arranged at the upper end of the valve core end cover 51, the sealing movable seat 52 is connected with the lower end of the valve core end cover 51 through a locking piece 8, and the sealing movable seat 52 is matched with the sealing port 30 to seal the flow channel 3. The lower end of the valve rod 4 is provided with a limit lug 40, the limit lug 40 moves in the movable cavity 510, and the limit convex ring 511 at the upper end of the valve core end cover 51 can effectively prevent the valve rod 4 from being separated from the movable cavity 510.

Two notches 6 facing the sealing movable seat 52 are formed in the lower end of the valve core end cover 51, the two positioning grooves 6 are respectively located at the positions, opposite to the valve core end cover 51, of the valve core end cover 51, and the positioning of the valve core end cover 51 and the sealing movable seat 52 can be better achieved through the two positioning grooves 6.

Be provided with location ejector pin 62 and driving spring 61 in the constant head tank 6, location ejector pin 62 is located the notch department of constant head tank 6, sealed sliding seat 52 is provided with location ejector pin 62 position assorted location breach 7, driving spring 61 one end is fixed in constant head tank 6, the other end and location ejector pin 62 fixed connection to the effort that resets through self makes location ejector pin 62 have the trend towards location breach 7 motion, can realize accurate alignment location through the cooperation of location ejector pin 62 with location breach 7.

The above-mentioned locking piece 8 adopts a screw, the valve core end cover 51 and the sealing movable seat 52 are both provided with locking holes 81 for the insertion of the screw, and the inner periphery of each locking hole 81 is provided with a thread which forms a thread fit with the screw. Further, there are two locking pieces 8, and the two locking pieces 8 are respectively and symmetrically distributed along the central axis of the valve core end cover 51. The valve core end cover 51 and the sealing movable seat 52 can be better fixed through the two locking pieces 8, and the working stability of the check valve is ensured.

A sealing washer 9 is fixedly arranged at the lower end of the valve core end cover 51, a through hole (not shown) for each locking piece 8 and the positioning ejector rod 62 to pass through is formed in the sealing washer 9, and the sealing washer 9 can be made of rubber.

The upper end of the valve cover 2 is provided with an actuator 11 for driving the valve rod 4 to reciprocate along the axial direction of the valve rod, and the actuator 11 adopts a cylinder.

The valve core end cover 51 is provided with a buffer block 512 protruding towards the valve rod 4 in the movable cavity 510, and the buffer block 512 can be made of rubber.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a check valve of removable case, includes valve body (1) and sets up in valve gap (2) of valve body (1) upper end, valve body (1) in seted up runner (3) that supply the fluid medium circulation, valve gap (2) on vertically install valve rod (4) of wearing to establish to runner (3), valve rod (4) one end that is located runner (3) install case (5), runner (3) be provided with constitute sealed complex sealing opening (30), its characterized in that with case (5):

the valve core (5) consists of a valve core end cover (51) and a sealing movable seat (52), a movable cavity (510) for the valve rod (4) to slide along the axial direction is arranged in the valve core end cover (51), a limiting convex ring (511) for preventing the valve rod (4) from dropping off is fixedly arranged at the upper end of the valve core end cover (51), the sealing movable seat (52) is connected with the lower end of the valve core end cover (51) through a locking piece (8), and the sealing movable seat (52) is matched with the sealing port (30) to seal the flow channel (3);

the lower end of the valve core end cover (51) is provided with at least one positioning groove (6) with a notch facing the sealing movable seat (52), a positioning ejector rod (62) and a driving spring (61) are arranged in the positioning groove (6), the positioning ejector rod (62) is located at the notch of the positioning groove (6), the sealing movable seat (52) is provided with a positioning notch (7) matched with the positioning ejector rod (62), one end of the driving spring (61) is fixed in the positioning groove (6), the other end of the driving spring is fixedly connected with the positioning ejector rod (62), and the positioning ejector rod (62) has a tendency of moving towards the positioning notch (7) through self reset acting force.

2. The replaceable cartridge check valve of claim 1, wherein: the locking piece (8) is a screw, locking holes (81) for inserting the screw are formed in the valve core end cover (51) and the sealing movable seat (52), and threads which are in threaded fit with the screw are formed in the inner periphery of each locking hole (81).

3. The replaceable cartridge check valve of claim 2, wherein: the two locking pieces (8) are symmetrically distributed along the central axis of the valve core end cover (51).

4. The replaceable cartridge check valve of claim 2, wherein: the lower end of the valve core end cover (51) is fixedly provided with a sealing washer (9), and the sealing washer (9) is provided with through holes for the locking pieces (8) and the positioning ejector rod (62) to pass through.

5. The replaceable cartridge check valve of claim 1, wherein: the upper end of the valve cover (2) is provided with an actuator (11) for driving the valve rod (4) to realize reciprocating movement along the axial direction.

6. The replaceable cartridge check valve of claim 1, wherein: and a buffer block (512) which protrudes towards the valve rod (4) is arranged in the movable cavity (510) of the valve core end cover (51).