CN212360860U

CN212360860U - Accurate flow control ball valve

Info

Publication number: CN212360860U
Application number: CN202020945686.2U
Authority: CN
Inventors: 金建锋; 金剑; 谭明俊; 金恩科
Original assignee: Wenzhou Chenqiu Valve Co ltd
Current assignee: Wenzhou Chenqiu Valve Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-01-15
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a flow accurate control ball valve, its technical scheme main points are including two disk seats and the case that is located between two disk seats, inlet channel and liquid outlet channel have not been seted up to two disk seats, be provided with on the disk seat of seting up liquid outlet channel and hinder the baffle of keeping apart liquid outlet channel and case, it is used for the accuse circulation liquid hole with liquid outlet channel and case intercommunication to be provided with a plurality of on the baffle, the equal relative liquid outlet channel's of a plurality of accuse circulation liquid hole length direction parallel arrangement, the problem of the unable accurate control flow of prior art and disk seat atress inequality and easy deformation or damage has been solved.

Description

Accurate flow control ball valve

Technical Field

The utility model relates to a valve, more specifically the accurate control ball valve of flow that says so relates to.

Background

The ball valve is a valve which uses a ball valve core with a circular through hole as an opening and closing part and realizes the opening and closing actions by the rotation of the ball valve core along with a valve rod, and is widely applied to various industries such as petroleum, chemical engineering, power generation, paper making, atomic energy, aviation, rockets and the like and daily life of people. Usually, when the ball valve is turned from a closed state to a maximum open state, the rotation angle of the valve rod is 90 degrees, when the ball valve reaches the maximum open state, the flow passing through the ball valve is maximum, and the flow passing through the ball valve in the opening process of the ball valve is generally uncontrollable, that is, the flow passing through the ball valve is only determined as the maximum flow, and the flow passing through the ball valve is difficult to realize if the flow passing through the ball valve is controlled within the maximum flow and has a more determined value; furthermore, the ball valve includes case and the disk seat that is located the case both ends, and the case rotates the in-process, and the relative ball valve's of the relative channel direction of liquid flow direction in the follow case direction is not parallel but changes at every moment, and the liquid that flows out the case produces the impact to the inner wall of disk seat, and disk seat inner wall atress inequality causes disk seat deformation easily and damages, for solving aforementioned two kinds of defects, needs to design a section can flow control and atress even and not fragile ball valve.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a flow accurate control and durable ball valve.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a flow accurate control ball valve, includes two disk seats and is located the case between two disk seats, two inlet channel and liquid outlet channel have been seted up respectively to the disk seat, set up liquid outlet channel be provided with on the disk seat and hinder the baffle of keeping apart liquid outlet channel and case, be provided with the accuse circulation liquid hole that a plurality of is used for communicating liquid outlet channel and case on the baffle, a plurality of the length direction parallel arrangement of the equal relative liquid outlet channel in accuse circulation liquid hole.

As a further improvement of the utility model, a plurality of the flow control liquid holes are in honeycomb distribution.

As a further improvement, two all be provided with the sealing washer on the face of disk seat orientation case, the sealing washer is laminated mutually with the coaxial setting of case and with the surface of case.

As a further improvement, two all be provided with a plurality ofly on the disk seat with the first spring that the sealing washer promoted to case place direction, it is a plurality of first spring all is parallel with the axis of disk seat.

As a further improvement of the present invention, the first springs are uniformly distributed on the same circumference.

As a further improvement, two all be provided with the outer convex part that corresponds with first spring on the sealing washer, outer convex part sets up on the outer wall of sealing washer and is located the sealing washer and keeps away from one of case and serve, first spring is spacing between disk seat and outer convex part, two all can dismantle on the disk seat and be connected with the apron that is spacing in the disk seat with outer convex part.

As a further improvement of the present invention, the outer convex portion is a ring coaxially disposed with the seal ring.

As the utility model discloses a further improvement, one of them be provided with the location ball in the apron and be used for the second spring that promotes the location ball outside the apron, the case be provided with a plurality of and the locating hole that the location ball matches on the surface, and a plurality of locating hole is located same bus, and it is static to block the relative disk seat of realization case through location ball and locating hole mutually.

As a further improvement of the utility model, a plurality of the locating hole is corresponding with the column number of accuse circulation liquid hole.

The utility model has the advantages that: the valve seat for discharging liquid is provided with the baffle for blocking the communication between the valve core and the valve seat, the baffle is provided with a plurality of flow control holes distributed in a honeycomb shape, and the number of the flow control holes on the baffle communicated with the valve core is gradually changed in the process that the valve core rotates relative to the valve seat, so that compared with the prior art, the flow can be accurately controlled in the whole process; the design that accuse circulation liquid hole is on a parallel with liquid outlet channel corrects the flow direction of the liquid that flows through the case for the flow direction of the liquid that the case flows out is parallel with liquid outlet channel's length direction, so the design compare among the prior art liquid flow direction with liquid outlet channel's length direction nonparallel design can avoid liquid to liquid outlet channel's inhomogeneous impact, thereby slow down the life of disk seat deformation extension disk seat, can also improve the flow efficiency of liquid in liquid outlet channel simultaneously.

Drawings

FIG. 1 is a main sectional view of the present invention when the valve element is not connected to the valve seat;

FIG. 2 is a main sectional view of the valve element of the present invention in communication with a valve seat;

FIG. 3 is a right side view of the valve seat with a fluid control hole of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 1;

FIG. 5 is an enlarged view at B in FIG. 2;

fig. 6 is a top cross-sectional view of the positioning ball of fig. 5 engaged with the positioning hole.

Reference numerals: 1. a valve seat; 2. a valve core; 3. a liquid inlet channel; 4. a baffle plate; 5. a flow-through control hole; 6. a liquid outlet channel; 7. a seal ring; 8. a first spring; 9. an outer convex portion; 10. a cover plate; 11. a positioning ball; 12. a second spring; 13. and (7) positioning the holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals.

Referring to fig. 1 to 6, the ball valve for precisely controlling flow rate of the present embodiment includes two valve seats 1 and a valve core 2 located between the two valve seats 1, the two valve seats 1 are respectively provided with a liquid inlet channel 3 and a liquid outlet channel 6, the improvement is made on the existing basis, a baffle 4 is disposed at a port of the valve seat 1 provided with the liquid outlet channel 6 close to the valve core 2, the baffle 4 can be integrally formed with the valve seat 1, when the liquid outlet channel 6 is processed, the liquid outlet channel 6 does not penetrate through the valve seat 1, the baffle 4 is provided with a plurality of flow control holes 5, the liquid outlet channel 6 is communicated with the valve core 2 by the plurality of flow control holes 5, the plurality of flow control holes 5 are distributed corresponding to the circular port of the valve core 2, the arrangement modes of the flow control holes 5 are many, preferably, the plurality of flow control holes 5 are distributed in a honeycomb shape, the flow rate can be maximized, the plurality of flow control holes 5 are all arranged in parallel to the extending direction of the liquid outlet channel 6, in the using process, the number of the communication between the flow control through holes 5 on the valve seat 1 and the valve core 2 is correspondingly changed along with the rotation of the valve core 2 relative to the valve seat 1, so that the flow in the liquid outlet channel 6 can be accurately controlled, and the design makes up the defect that the flow cannot be accurately controlled in the prior art; the design that the liquid flow control hole 5 is parallel to the liquid outlet channel 6 corrects the flow direction of the liquid flowing through the valve core 2, so that the flow direction of the liquid flowing out of the valve core 2 is parallel to the length direction of the liquid outlet channel 6, compared with the design that the liquid flow direction is not parallel to the length direction of the liquid outlet channel 6 in the prior art, the design can avoid uneven impact of the liquid on the liquid outlet channel 6, slow down the deformation of the valve seat 1, prolong the service life of the valve seat 1 and improve the flow efficiency of the liquid in the liquid outlet channel 6.

As an improved specific embodiment, referring to fig. 3 to 5, as compared with the case where the baffle 4 is provided on the valve seat 1 and the liquid flow control hole 5 is provided on the baffle 4, the flow rate of the liquid flowing through the valve element 2 is unchanged while the flow rate of the liquid directly provided on the valve seat 1 is reduced, so that the liquid pressure at the baffle 4 is easily increased, and the liquid flows around the baffle 4 and easily flows through the gap between the valve seat 1 and the valve element 2 to reach other positions, thereby causing a liquid leakage phenomenon, in order to avoid this problem, the sealing rings 7 are provided on the surfaces of the two valve seats 1 facing the valve element 2, the sealing rings 7 are coaxially provided with the valve element 2 and are attached to the surface of the valve element 2, and thus the sealing performance between the valve seat 1 and the valve element 2 is improved, thereby preventing the liquid leakage phenomenon.

As an improved specific embodiment, referring to fig. 4 to 5, when the valve element 2 is worn for a long time relative to the sealing ring 7, the sealing ring 7 is worn out, so that the sealing performance between the valve element 2 and the valve seat 1 is reduced, and the sealing ring 7 needs to be replaced frequently, and the required maintenance period is short, in order to solve the problem, a plurality of first springs 8 which push the sealing ring 7 towards the direction of the valve element 2 are respectively arranged on the two valve seats 1, the plurality of first springs 8 are all parallel to the axis of the valve seat 1, after the valve seat 1 and the valve element 2 are installed in place, the first springs 8 are both in a compressed state, the sealing ring 7 partially penetrates out of the valve seat 1 and is attached to the surface of the valve element 2, after the sealing ring 7 is worn partially, the first springs 8 continue to push the sealing ring 7 outwards, so that the sealing ring 7 and the valve element 2 continue to be attached, thereby effectively prolonging the service, the required maintenance cycle is long, is convenient for the utility model discloses a long-term use.

As an improved specific embodiment, referring to fig. 4 to 5, the plurality of first springs 8 are uniformly distributed on the same circumference, so that compared with the case that the plurality of first springs 8 are non-uniformly distributed, the sealing ring 7 is uniformly stressed and is not easily deformed, and the sealing performance is further improved.

As an improved specific embodiment, referring to fig. 4 to 5, two sealing rings 7 are each provided with an outer protrusion 9 corresponding to a first spring 8, the outer protrusions 9 are disposed on the outer wall of the sealing ring 7 and located at an end of the sealing ring 7 away from the valve element 2, the first spring 8 is limited between the valve seat 1 and the outer protrusions 9, the first spring 8 pushes the outer protrusions 9 to move the sealing ring 7 out of the valve seat 1, two valve seats 1 are each detachably connected with a cover plate 10 limiting the outer protrusions 9 in the valve seat 1, the cover plate 10 can be fixedly connected with the valve seat 1 through bolts, the cover plate 10 can be a ring, when the outer protrusions 9 and the cover plate 10 are in contact with each other, the first spring 8 cannot push the outer protrusions 9 any more, the sealing ring 7 stops moving, when a liquid leakage occurs, the cover plate 10 can be detached, the sealing ring 7 can be taken out and replaced with a new sealing ring 7 to be limited in the valve seat 1 again through the cover plate 10, the first spring 8 is in a compressed state, and compared with the previous embodiment, the design can ensure the connection stability of the sealing ring 7 relative to the valve seat 1, and the sealing ring 7 cannot fall off from the valve seat 1; meanwhile, the design of the outer convex part 9 can be fully contacted with one end of the first spring 8 when the wall thickness of the sealing ring 7 is small, the sealing ring 7 can be limited on the valve seat 1, and the sealing ring 7 can be conveniently replaced due to the detachable design of the cover plate 10.

As an improved specific embodiment, referring to fig. 4 to 5, the sealing ring 7 tends to move under the driving of the valve element 2, and the outer protrusion 9 is a small protrusion and the design corresponding to the first spring 8 may cause that a part of the sealing ring 7 not connected with the outer protrusion 9 extends out of the valve seat 1 more, so that the deformation amount of the sealing ring 7 is large and is not beneficial to sealing, and in order to solve the problem, the outer protrusion 9 is a ring coaxially disposed with the sealing ring 7, and compared with the design, the design in which the outer protrusion 9 is designed into a plurality of small protrusions can improve the structural stability of the sealing ring 7, and indirectly improve the sealing performance of the sealing ring 7 and the valve element 2.

As an improved specific embodiment, referring to fig. 4 to 6, a positioning ball 11 and a second spring 12 for pushing the positioning ball 11 to the outside of the cover plate 10 are arranged in the cover plate 10 on the liquid outlet channel 6, a plurality of positioning holes 13 matched with the positioning ball 11 are arranged on the surface of the valve core 2, the plurality of positioning holes 13 are located on the same bus, the plurality of positioning holes 13 correspond to the number of rows of the liquid control and circulation holes 5, in an initial state, the valve core 2 is not communicated with the valve seat 1, the positioning ball 11 abuts against the surface of the valve core 2, the second spring 12 is in a compressed state, when the valve core 2 rotates relative to the valve seat 1 to be communicated with the valve seat, the positioning ball 11 slides relative to the surface of the valve core 2 and enters one of the positioning holes 13, and the second spring 12 extends; with the continuous rotation of the valve core 2 relative to the valve seat 1, the second spring 12 is firstly shortened from long to short and then lengthened from short to long, the positioning ball 11 enters the next positioning hole 13 until the valve core 2 is not communicated with the valve seat 1, the second spring 12 is in a compressed state, the positioning ball 11 abuts against the surface of the valve core 2 and slides along the surface of the valve core 2, when the valve core 2 is communicated with the valve seat 1 again, the positioning ball 11 and the positioning hole 13 are clamped one by one, the clamping design of the positioning ball 11 and the positioning hole 13 is beneficial to the fact that when the valve core 2 stops rotating, the valve core 2 cannot easily rotate under the liquid impact, the stability of the valve core 2 is improved, and the accurate control of the liquid flow is further improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a flow accurate control ball valve, includes two disk seats (1) and is located case (2) between two disk seats (1), two inlet channel (3) and liquid outlet channel (6), its characterized in that have been seted up respectively to disk seat (1): the valve seat (1) provided with the liquid outlet channel (6) is provided with a baffle (4) for blocking the liquid outlet channel (6) from the valve core (2), the baffle (4) is provided with a plurality of flow control holes (5) for communicating the liquid outlet channel (6) with the valve core (2), and the flow control holes (5) are arranged in parallel relative to the length direction of the liquid outlet channel (6).

2. A precision flow control ball valve as claimed in claim 1 wherein: the plurality of flow control through holes (5) are distributed in a honeycomb shape.

3. A precision flow control ball valve according to claim 1 or 2, wherein: and sealing rings (7) are arranged on the surfaces of the two valve seats (1) facing the valve core (2), and the sealing rings (7) are coaxially arranged with the valve core (2) and are attached to the surface of the valve core (2).

4. A precision flow control ball valve as claimed in claim 3 wherein: the two valve seats (1) are respectively provided with a plurality of first springs (8) which push the sealing rings (7) to the direction of the valve core (2), and the first springs (8) are parallel to the axis of the valve seats (1).

5. A precision flow control ball valve as claimed in claim 4 wherein: the first springs (8) are uniformly distributed on the same circumference.

6. A precision flow control ball valve as claimed in claim 5 wherein: the two sealing rings (7) are provided with outer convex parts (9) corresponding to the first springs (8), the outer convex parts (9) are arranged on the outer wall of the sealing rings (7) and located at one end, far away from the valve core (2), of the sealing rings (7), the first springs (8) are limited between the valve seat (1) and the outer convex parts (9), and the two valve seats (1) are detachably connected with cover plates (10) limiting the outer convex parts (9) in the valve seat (1).

7. A precision flow control ball valve as claimed in claim 6 wherein: the outer convex part (9) is a ring which is coaxial with the sealing ring (7).

8. A precision flow control ball valve as claimed in claim 6 wherein: one of the cover plates (10) is internally provided with a positioning ball (11) and a second spring (12) for pushing the positioning ball (11) to the outside of the cover plate (10), the surface of the valve core (2) is provided with a plurality of positioning holes (13) matched with the positioning ball (11), the plurality of positioning holes (13) are positioned on the same bus, and the valve core (2) is static relative to the valve seat (1) through the clamping of the positioning ball (11) and the positioning holes (13).

9. A precision flow control ball valve as claimed in claim 8 wherein: the number of the positioning holes (13) corresponds to the number of the rows of the flow control liquid holes (5).