CN215409160U - Wear-resisting type double-fixed valve assembly - Google Patents

Abstract

The utility model relates to a wear-resistant double-fixed valve assembly which comprises a valve assembly, wherein a buffer mechanism is arranged in the valve assembly, the valve assembly comprises a fixed valve cover, a valve seat and a fixed valve joint are connected with the fixed valve cover in a threaded manner, two guide rails are fixedly arranged in the fixed valve joint, a valve ball is movably connected between the two guide rails, the buffer mechanism comprises four tension springs, and the lower surfaces of the four tension springs are fixedly connected with a mounting ring. This two fixed valve assemblies of wear-resisting type through setting up wear-resisting cover and threaded rod, makes it protect the internal spheroid, and still be convenient for change after the damage, leads to the valve ball through the guide rail, reduces the striking between valve ball and the fixed valve joint, through setting up buffer gear for the impact force of valve ball when closed can be offset by part, and its buffer gear self also can regard as the second to seal in addition, improves whole sealing performance.

Description

Wear-resisting type double-fixed valve assembly

Technical Field

The utility model relates to the technical field of valve assemblies, in particular to a wear-resistant double-fixed valve assembly.

Background

The valve assembly is a one-way valve, which generally comprises a valve outer shell, and a valve ball seat inside, wherein when fluid passes through the valve, the valve ball leaves the valve ball seat, a flow passage is opened, the fluid can pass through, when the fluid flows reversely, the valve ball is seated on the valve ball seat under the action of pressure (or other force), the flow passage is closed, and the fluid cannot pass through the valve.

The valve assembly is widely applied to the oil field fracturing and well cementation plunger pump and has the function that in the running process of the plunger pump, the valve is continuously opened and closed along with the pressure change generated by the continuous reciprocating motion of the plunger so as to realize the low-pressure suction and the high-pressure discharge of a fluid medium.

Because the valve needs to be opened and closed continuously, the valve ball in the valve assembly can impact the inner valve seat continuously and generate friction with the valve seat, the service life of the valve ball and the valve seat is short, and frequent maintenance is needed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the wear-resistant double-fixed valve assembly which has the advantage of difficult wear and solves the problem that the existing valve assembly is easy to wear.

In order to achieve the purpose, the utility model provides the following technical scheme: a wear-resistant double-fixed valve assembly comprises a valve assembly, wherein a buffer mechanism is arranged in the valve assembly.

The valve assembly comprises a fixed valve cover, the fixed valve cover is connected with a valve seat and a fixed valve connector in an internal thread mode, two guide rails are fixedly installed in the fixed valve connector, and a valve ball is movably connected between the two guide rails.

Buffer gear includes that quantity is four extension springs, four extension spring lower surface all with collar fixed connection, fixed surface installs the pivot frame on the collar, first blotter has been cup jointed to pivot frame periphery wall, collar lower surface fixed connection has flexible cover.

Furthermore, the valve seat is located fixed valve and connects the bottom, fixed valve connects and has seted up first class through-hole in, two one side of guide rail looks abscission face all with first class through-hole internal perisporium fixed connection, the guide rail is arc ceramic antifriction plate.

Further, the valve ball includes interior spheroid, interior spheroid periphery wall swing joint has the wear-resisting cover that quantity is two, wear-resisting cover is close to one side fixedly connected with threaded rod of interior spheroid.

Further, the internal diameter of wear-resisting cover equals interior spheroidal external diameter, the wear-resisting cover has the waterproof glue near interior spheroidal one side coating, set up the thread groove with threaded rod looks adaptation in the interior spheroid.

Furthermore, the upper surfaces of the tension springs are fixedly connected with the lower surface of the fixed valve joint, the distance between every two adjacent tension springs is equal, and the inner peripheral wall of the installation ring is fixedly connected with a second cushion pad matched with the valve ball in size.

Further, first blotter and pivot frame fixed connection, the one end that the collar was kept away from to the telescope tube is pegged graft to the disk seat in, set up the seal groove with valve ball size looks adaptation in the disk seat, set up the second flow hole that is linked together with the seal groove in the disk seat.

Further, the sum of the length of the tension spring when the tension spring is not stretched and the heights of the mounting ring and the telescopic sleeve is larger than the distance between the valve seat and the fixed valve connector, and the first cushion pad and the second cushion pad are both thermosetting polyurethane.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this two fixed valve assemblies of wear-resisting type through setting up wear-resisting cover and threaded rod, makes it protect the internal spheroid, and still be convenient for change after the damage, leads to the valve ball through the guide rail, reduces the striking between valve ball and the fixed valve joint, through setting up buffer gear for the impact force of valve ball when closed can be offset by part, and its buffer gear self also can regard as the second to seal in addition, improves whole sealing performance.

Drawings

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

FIG. 2 is an enlarged view of a portion of FIG. 1A;

fig. 3 is a schematic structural diagram of the valve ball of the present invention.

In the figure: 1 valve assembly, 11 fixed valve covers, 12 valve seats, 13 fixed valve joints, 14 guide rails, 15 valve balls, 151 inner balls, 152 wear-resistant covers, 153 threaded rods, 2 buffer mechanisms, 21 tension springs, 22 mounting rings, 23 rotating shaft frames, 24 first buffer pads and 25 telescopic sleeves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the wear-resistant dual fixed valve assembly of the present embodiment includes a valve assembly 1, and a buffer mechanism 2 is movably installed in the valve assembly 1.

The valve assembly 1 comprises a fixed valve cover 11, a valve seat 12 and a fixed valve joint 13 are connected to the inner thread of the fixed valve cover 11, the valve seat 12 is located at the bottom of the fixed valve joint 13, a first flow through hole is formed in the fixed valve joint 13, two guide rails 14 are fixedly installed in the fixed valve joint 13, one side of each of two opposite surfaces of the two guide rails 14 is fixedly connected with the inner peripheral wall of the first flow through hole, a valve ball 15 is movably connected between the two guide rails 14, the valve ball 15 can only move along the guide rails 14, and therefore abrasion between the valve ball 15 and the fixed valve joint 13 is avoided.

The buffer mechanism 2 comprises four tension springs 21, the upper surfaces of the tension springs 21 are fixedly connected with the lower surface of the fixed valve joint 13, the distance between every two adjacent tension springs 21 is equal, the lower surfaces of the four tension springs 21 are fixedly connected with a mounting ring 22, a second buffer pad matched with the valve ball 15 in size is fixedly connected to the inner peripheral wall of the mounting ring 22, a rotating shaft frame 23 is fixedly mounted on the upper surface of the mounting ring 22, a first buffer pad 24 is sleeved on the outer peripheral wall of the rotating shaft frame 23, the first buffer pad 24 is fixedly connected with the rotating shaft frame 23, a telescopic sleeve 25 is fixedly connected to the lower surface of the mounting ring 22, one end, far away from the mounting ring 22, of the telescopic sleeve 25 is inserted into the valve seat 12, when the valve ball 15 meets the first cushion 24 the valve ball 15 also contacts the mounting ring 22, making the valve ball 15 move downwards needs to push the mounting ring 22 to move, and then needs to overcome the pulling force of the tension spring 21, so as to reduce the impact force with the valve seat 12.

It should be noted that the guide rail 14 is an arc-shaped ceramic wear-resistant plate, a sealing groove matched with the valve ball 15 in size is formed in the valve seat 12, a second flow through hole communicated with the sealing groove is formed in the valve seat 12, the sum of the length of the unstretched tension spring 21 and the heights of the mounting ring 22 and the telescopic sleeve 25 is greater than the distance between the valve seat 12 and the fixed valve joint 13, and the first cushion pad 24 and the second cushion pad are both made of thermosetting polyurethane.

Referring to fig. 3, in order to prolong the service life of the valve ball 15, the valve ball 15 in this embodiment includes an inner ball 151, two wear-resistant covers 152 are movably connected to the outer peripheral wall of the inner ball 151, a threaded rod 153 is fixedly connected to one side of each wear-resistant cover 152 close to the inner ball 151, and after the wear-resistant covers 152 are seriously worn, only the worn wear-resistant cover 152 needs to be replaced.

It should be noted that, the inner diameter of the wear-resistant cover 152 is equal to the outer diameter of the inner sphere 151, one side of the wear-resistant cover 152 close to the inner sphere 151 is coated with waterproof glue, the connection firmness between the wear-resistant cover 152 and the inner sphere 151 is improved, and a thread groove matched with the thread rod 153 is formed in the inner sphere 151.

The working principle of the above embodiment is as follows:

install outside interior spheroid 151 through the wear-resisting cover 152 that will scribble the waterproof glue rotation, make two wear-resisting covers 152 assemble into a spheroid, protect interior spheroid 151, when valve ball 15 moves down with the closed in-process of valve seat 12, valve ball 15 contacts with first blotter 24 and collar 22 earlier, then drives it and moves down together for extension spring 21 is tensile, thereby make the impact force that valve ball 15 moved down offset by part, reduce the impact force with valve seat 12, utilize first blotter 24 and second blotter further to reduce wearing and tearing simultaneously.

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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a wear-resisting type double-fixed valve assembly, includes valve assembly (1), its characterized in that: a buffer mechanism (2) is arranged in the valve assembly (1);

the valve assembly (1) comprises a fixed valve cover (11), a valve seat (12) and a fixed valve joint (13) are connected to the fixed valve cover (11) in an internal thread mode, two guide rails (14) are fixedly installed in the fixed valve joint (13), and a valve ball (15) is movably connected between the two guide rails (14);

buffer gear (2) are extension spring (21) that quantity is four, four extension spring (21) lower surface all with collar (22) fixed connection, fixed surface installs pivot frame (23) on collar (22), pivot frame (23) periphery wall has cup jointed first blotter (24), collar (22) lower fixed surface is connected with flexible cover (25).

2. A wear-resistant dual fixed valve assembly as defined in claim 1, wherein: the valve seat (12) is located the bottom of the fixed valve joint (13), a first flow through hole is formed in the fixed valve joint (13), the two flow through holes are fixedly connected with the inner peripheral wall of the first flow through hole on one side of the opposite surface of the guide rail (14), and the guide rail (14) is an arc-shaped ceramic wear-resisting plate.

3. A wear-resistant dual fixed valve assembly as defined in claim 1, wherein: the valve ball (15) comprises an inner ball body (151), the outer peripheral wall of the inner ball body (151) is movably connected with two wear-resistant covers (152), and one side of each wear-resistant cover (152) close to the inner ball body (151) is fixedly connected with a threaded rod (153).

4. A wear resistant dual fixed valve assembly as defined in claim 3, wherein: the internal diameter of wear-resisting cover (152) equals the external diameter of interior spheroid (151), wear-resisting cover (152) is close to one side coating that interior spheroid (151) has the waterproof glue, set up the thread groove with threaded rod (153) looks adaptation in interior spheroid (151).

5. A wear-resistant dual fixed valve assembly as defined in claim 1, wherein: extension spring (21) upper surface and fixed valve connect (13) lower surface fixed connection, adjacent two interval homogeneous phase between extension spring (21) is equal, the second blotter of installation ring (22) internal perisporium fixed connection and valve ball (15) size looks adaptation.

6. A wear-resistant dual fixed valve assembly as defined in claim 1, wherein: first blotter (24) and pivot frame (23) fixed connection, the one end that collar (22) were kept away from in telescope tube (25) is inserted to disk seat (12), set up the seal groove with valve ball (15) size looks adaptation in disk seat (12), set up the second flow through hole that is linked together with the seal groove in disk seat (12).

7. A wear resistant dual fixed valve assembly as defined in claim 5, wherein: the sum of the length of the extension spring (21) when not stretched and the height of the mounting ring (22) and the telescopic sleeve (25) is larger than the distance between the valve seat (12) and the fixed valve joint (13), and the first cushion pad (24) and the second cushion pad are both thermosetting polyurethane.

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