CN219606101U - Valve body for pipeline - Google Patents

Abstract

The valve body comprises a valve shell, wherein a water inlet and a water outlet are respectively arranged at two ends of the valve shell. The valve casing is internally provided with a spherical valve core, and the valve core is internally provided with a water inlet flow passage communicated with the water inlet and a water outlet flow passage communicated with the water outlet. The valve core is controlled by the rotation of the valve rod. The valve stem includes a first control rod and a second control rod. The valve core is provided with a control base, and the first control rod extends into the control base and is provided with a switching mechanism with the control base. The second control rod sequentially comprises a threaded section, a limiting section and a lifting section. The first control rod is provided with a thread groove which is meshed and assembled with the thread section. The limiting section is provided with a limiting block, and the control base is provided with a limiting groove matched with the limiting block. The lifting section is provided with an adjusting head at the end part. Compared with the prior art, the spherical control valve has the advantage that the traditional spherical control valve has an accurate flow regulating function.

Description

Valve body for pipeline

Technical Field

The utility model belongs to the field of spherical control valves, and particularly relates to a valve body for a pipeline.

Background

Ball control valves are a common control device used in the industry to achieve precise control and regulation of fluids based on the rotational movement of a ball assembly. The spherical control valve mainly aims to solve the problems that the control equipment such as a traditional gate valve, a stop valve and the like cannot be well adapted to a fluid pipeline system, flow changes and the like.

The spherical control valve has simple and compact structure, and can realize the control of flow in a smaller installation space. Because the spherical component can control the flow and pressure of the fluid only by rotating around one axis, the spherical control valve has the advantages of good stability, quick response and the like in application. Furthermore, since there is no flange or screw connection between the ball and the pipe, the risk of leakage and leakage can be maximally reduced when using a ball control valve.

While spherical control valves perform well in applications, they currently suffer from a number of drawbacks. Mainly in the control and regulation of small flows. Because the ball-type control valve rotates flexibly, the phenomena of shaft seal leakage, vibration and the like are very easy to occur at low flow rate. These problems lead to the problems of poor control and regulation precision, slow response and the like, so that the spherical control valve is difficult to adapt to some application scenes with higher requirements on flow regulation performance.

In order to solve the above-mentioned defect, the applicant provides a technical scheme that is provided with flow regulation structure in traditional spherical control valve, makes the control valve through the switching mechanism can switch the on-off state of high leakproofness and the flow regulation state that the regulating property is good through rotating the valve rod, realizes the accurate control and the regulation to the low-flow, and is indistinguishable with traditional spherical control valve in the use, and the study cost is low.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the valve body for the pipeline, so that the traditional spherical control valve has an accurate flow regulating function.

In order to solve the technical problems, the utility model is solved by the following technical scheme.

The valve body comprises a valve shell, wherein a water inlet and a water outlet are respectively arranged at two ends of the valve shell. The valve casing is internally provided with a spherical valve core, and the valve core is internally provided with a water inlet flow passage communicated with the water inlet and a water outlet flow passage communicated with the water outlet. The valve core is controlled by the rotation of a valve rod extending out of the valve housing.

The utility model is characterized in that compared with the prior art: the valve stem includes a first control rod and a second control rod. The valve core is provided with a control base, and the first control rod extends into the control base and is provided with a switching mechanism with the control base. The switching mechanism is used for switching the following states: the first control rod rotates to drive the valve core to rotate in a switching state and drives the second control rod to lift in a flow adjusting state.

The second control rod sequentially comprises a threaded section, a limiting section and a lifting section. The first control rod is provided with a thread groove which is meshed and assembled with the thread section. The limiting section is provided with a limiting block, and the control base is provided with a limiting groove matched with the limiting block. The lifting section passes through the control base and stretches into the valve core, and an adjusting head which is positioned between the water inlet flow channel and the water outlet flow channel and used for adjusting flow is arranged at the end part. When the flow regulating device is in a flow regulating state, the first control rod rotates, and the second control rod can only axially lift under the action of the limiting groove so as to control the regulating head to regulate the flow. Compared with thread lifting, the sealing performance is better.

As a preferred technical solution of the valve body for use in a pipeline according to the present utility model, in particular, the switching mechanism includes an elastic locking member connected and assembled with the first control lever, and a limit bump disposed on the control base. And a limiting chute matched with the limiting convex block is arranged in the valve casing. The valve core is limited in a certain range, and when the valve core rotates to an extreme value, the switching mechanism is automatically switched to a flow regulation state, and the switching process is simple.

As an preferable technical scheme of the valve body for the pipeline, the maximum rotation angle of the limiting lug in the limiting chute is 90 degrees. The valve core is fully opened after 90 degrees of rotation.

As a preferred technical solution of the valve body for use in a pipeline according to the present utility model, specifically, the first control lever is provided with an assembly block on a side surface, and the elastic locking member is assembled in the assembly block. The control base is provided with a locking groove matched with the elastic locking piece. When the elastic locking piece and the locking groove are matched and fixed, the first control rod rotates to drive the control base to rotate and drive the valve core to rotate. After the elastic locking piece is separated from the locking groove, the first control rod is separated from the control base.

As a preferred technical solution of the valve body for use in a pipeline according to the present utility model, in particular, the elastic locking member includes a limiting post provided with a locking seat at an end portion, and the limiting post is slidably assembled with the assembly block. And a pressure spring is arranged between the locking seat and the assembly block. And a locking head matched with the locking groove is arranged in the locking seat. When the control base rotates to the maximum value, the first control rod rotates, the pressure spring is compressed, and the locking head is separated from the locking groove, so that state switching is completed.

As an preferable technical scheme of the valve body for the pipeline, specifically, the locking head is a ball, and the locking groove is a hemispherical groove. The friction between the locking head and the control base is greatly reduced, and the service life of the component structure is prolonged.

As an optimized technical scheme of the valve body for the pipeline, specifically, the water inlet flow channel and the water outlet flow channel are in a structure that water inlet is arranged below the water inlet flow channel and water outlet is arranged above the water outlet flow channel, and the water inlet flow channel and the water outlet flow channel are communicated through the adjusting port. The adjusting head is assembled at the end part of the second control rod penetrating through the water outlet flow channel and is matched with the adjusting opening to work. Simple structure, convenient regulation.

As a preferable technical scheme of the valve body for the pipeline, specifically, a first sealing element is arranged between the control base and the valve core, and the second control rod penetrates through the first sealing element to prevent flowing water from leaking from a gap between the second control rod and the valve core.

As an preferable technical scheme of the valve body for the pipeline, specifically, the valve body is provided with a second sealing piece which is in butt joint with the valve core at the side of the water inlet flow channel or the water outlet flow channel, so that the leakage of running water from a gap between the valve housing and the valve core is prevented.

Compared with the prior art, the utility model has the following beneficial effects:

1. so that the traditional ball control valve has an accurate flow regulating function.

2. The valve rod can be rotated to switch the high-tightness on-off state and the flow regulation state with good regulation performance, so that the small flow can be accurately controlled and regulated, and the valve is indistinguishable from the traditional spherical control valve in use, and the learning cost is low.

3. The rotation of the first control rod is converted into the axial lifting of the second control rod, and compared with the rotation lifting of the threaded engagement, the axial lifting of the second control rod is better in sealing performance.

Drawings

Fig. 1 is a schematic perspective view of a valve body.

Fig. 2 is a plan sectional view of the valve body.

Fig. 3 is a partial enlarged view at a in fig. 2.

Fig. 4 is a cross-sectional view of the valve housing at the junction of the limit chute and the limit bump.

Fig. 5 is a schematic perspective view of the control base.

Fig. 6 is a perspective sectional view showing the internal structure of the control base.

Fig. 7 is a perspective view of the first lever.

Fig. 8 is a perspective view of the second lever.

The following is a description of the marks in the drawings of the specification:

1. a valve housing; 11. a water inlet; 12. a water outlet; 13. limiting sliding grooves;

2. a valve core; 21. a water inlet flow passage; 22. a water outlet flow passage; 23. an adjustment port;

3. a valve stem;

40. a first control lever; 41. a thread groove; 42. a mounting block;

50. a second control lever; 51. a threaded section; 52. a limiting section; 53. a lifting section; 54. a limiting block; 55. adjusting the head;

6. a control base; 61. a limiting groove; 62. a limit bump; 63. a locking groove;

7. an elastic locking member; 71. a restraining post; 72. a locking seat; 73. a locking head; 74. a pressure spring;

8. a first seal;

9. and a second seal.

Description of the embodiments

The utility model is described in further detail below with reference to the drawings and the detailed description.

In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout, and the embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it is to be understood that the terms: the directions of the center, the longitudinal, the lateral, the length, the width, the thickness, the upper, the lower, the front, the rear, the left, the right, the vertical, the horizontal, the top, the bottom, the inner, the outer, the clockwise, the counterclockwise, etc. indicate the directions or the positional relationship based on the directions or the positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and therefore, should not be construed as limiting the present utility model. Furthermore, the term: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of features shown. In the description of the present utility model, unless explicitly specified and defined otherwise, the terms: mounting, connecting, etc. should be construed broadly and the specific meaning of the terms in the present application will be understood by those skilled in the art in view of the specific circumstances.

Referring to fig. 1 to 8, in the prior art, a ball-shaped control valve includes a valve housing 1, and both ends of the valve housing 1 are respectively provided with a water inlet 11 and a water outlet 12. The valve casing 1 is internally provided with a spherical valve core 2, and the valve core 2 is internally provided with a water inlet flow passage 21 communicated with the water inlet 11 and a water outlet flow passage 22 communicated with the water outlet 12. The valve core 2 is controlled by rotation of a valve stem 3 extending out of the valve housing 1.

The utility model provides a valve body for a pipeline, which is improved on a traditional spherical control valve, and the improved distinguishing characteristics are that: the valve stem 3 comprises a first control rod 40 and a second control rod 50. The valve core 2 is provided with a control base 6, and the first control rod 40 extends into the control base 6 and is provided with a switching mechanism with the control base 6. The switching mechanism is used for switching the following states: the first control rod 40 rotates to drive the valve core 2 to rotate in a switching state, and the first control rod 40 rotates to drive the second control rod 50 to lift in a flow adjusting state.

The second control rod 50 sequentially comprises a threaded section 51, a limiting section 52 and a lifting section 53. The first control rod 40 is provided with a screw groove 41 which is engaged with the screw section 51. The limiting section 52 is provided with a limiting block 54, and the control base 6 is provided with a limiting groove 61 matched with the limiting block 54. The lifting section 53 passes through the control base 6 and extends into the valve core 2, and is provided with an adjusting head 55 at an end portion for adjusting the flow rate between the water inlet flow passage 21 and the water outlet flow passage 22. When in the flow rate adjusting state, the first control lever 40 rotates, and the second control lever 50 can only be lifted and lowered in the axial direction under the action of the limiting groove 61, so as to control the adjusting head 55 to adjust the flow rate. Compared with thread lifting, the sealing performance is better.

The utility model ensures that the traditional spherical control valve has an accurate flow regulating function, can switch the on-off state with high tightness and the flow regulating state with good regulating performance through the rotation of the valve rod 3, realizes the accurate control and regulation of small flow, has no difference with the traditional spherical control valve in use and has low learning cost. The working principle is as follows:

in a default state, the valve body is in a closed state, and the switching mechanism is connected with the first control rod 40 and the control base 6. The user rotates the first control rod 40, and the first control rod 40 drives the control base 6, and then drives the valve core 2 to rotate, so that the valve body is opened. When the valve core 2 is completely opened, the switching mechanism is switched, the first control rod 40 is disconnected from the control base 6, the first control rod 40 rotates, and the second control rod 50 moves axially due to the limiting action of the limiting block 54 and the limiting groove 61, so that the adjusting head 55 is lifted and lowered to complete flow adjustment.

The structure distribution between the adjusting head 55 and the water inlet flow channel 21 and the water outlet flow channel 22 is as follows: the water inlet flow channel 21 and the water outlet flow channel 22 are in a structure that water inlet is arranged below and water outlet is arranged above, and are communicated through the adjusting port 23. The adjustment head 55 is fitted to the end of the second control rod 50 passing through the outlet channel 22 and cooperates with the adjustment mouth 23. Simple structure, convenient regulation.

The switching mechanism is of a pure mechanical structure, and the structure is specifically as follows: comprising an elastic locking piece 7 which is connected and assembled with the first control rod 40, and a limit lug 62 which is arranged on the control base 6. A limit chute 13 matched with the limit lug 62 is arranged in the valve housing 1. The maximum rotation angle of the limit lug 62 in the limit chute 13 is 90 degrees. The valve element 2 is fully opened after 90 ° rotation. The rotation of the valve core 2 is limited in a certain range, and when the valve core 2 rotates to an extreme value, the switching mechanism automatically switches to a flow regulation state, so that the switching process is simple.

Specifically, the first control lever 40 is provided with a fitting block 42 at a side, and the elastic locking member 7 is fitted in the fitting block 42. The control base 6 is provided with a locking groove 63 which is matched with the elastic locking piece 7. When the elastic locking piece 7 and the locking groove 63 are matched and fixed, the first control rod 40 rotates to drive the control base 6 to rotate and drive the valve core 2 to rotate. After the elastic locking member 7 is disengaged from the locking groove 63, the first control lever 40 is disconnected from the control base 6.

Wherein, the elastic locking piece 7 has the structure that: comprising a restraining post 71 provided with a locking seat 72 at the end, said restraining post 71 being slidingly fitted with the fitting block 42. A pressure spring 74 is arranged between the locking seat 72 and the mounting block 42. The locking seat 72 is provided therein with a locking head 73 engaged with the locking groove 63. When the control base 6 rotates to the maximum value, that is, the control base 6 is limited by the limiting chute 13, the first control lever 40 continues to rotate, the pressure spring 74 is compressed, and the locking head 73 is disengaged from the locking groove 63, so as to complete the state switching. In order to reduce friction during movement of the locking head 73, it is preferable that the locking head 73 is a ball and the locking groove 63 is a hemispherical groove. So that friction between the locking head 73 and the control base 6 is greatly reduced, which is advantageous for prolonging the service life of the component structure.

Specifically, a first sealing member 8 is installed between the control base 6 and the valve core 2, and the second control rod 50 passes through the first sealing member 8 to prevent the leakage of the flowing water from the gap between the second control rod 50 and the valve core 2. The valve body is provided with a second sealing piece 9 which is in abutting sealing with the valve core 2 at the side of the water inlet flow passage 21 or the water outlet flow passage 22, so that the leakage of running water from a gap between the valve housing 1 and the valve core 2 is prevented.

The scope of the present utility model includes, but is not limited to, the above embodiments, and any alterations, modifications, and improvements made by those skilled in the art are intended to fall within the scope of the utility model.

Claims (9)

1. The valve body for the pipeline comprises a valve shell (1), wherein a water inlet (11) and a water outlet (12) are respectively arranged at two ends of the valve shell (1); a spherical valve core (2) is arranged in the valve shell (1), and a water inlet flow passage (21) communicated with the water inlet (11) and a water outlet flow passage (22) communicated with the water outlet (12) are arranged in the valve core (2); the valve core (2) is controlled by the rotation of a valve rod (3) extending out of the valve shell (1), and is characterized in that the valve rod (3) comprises a first control rod (40) and a second control rod (50);

the valve core (2) is provided with a control base (6), and the first control rod (40) stretches into the control base (6) and is provided with a switching mechanism with the control base (6);

the second control rod (50) sequentially comprises a threaded section (51), a limiting section (52) and a lifting section (53); the first control rod (40) is provided with a thread groove (41) which is meshed with the thread section (51); a limiting block (54) is arranged on the limiting section (52), and a limiting groove (61) matched with the limiting block (54) is arranged on the control base (6); the lifting section (53) passes through the control base (6) and extends into the valve core (2), and an adjusting head (55) which is positioned between the water inlet flow channel (21) and the water outlet flow channel (22) and used for adjusting the flow rate is arranged at the end part.

2. A valve body for use in a pipe according to claim 1, characterized in that the switching mechanism comprises an elastic locking member (7) fitted in connection with a first control lever (40), and a limit bump (62) provided on the control base (6); a limit chute (13) matched with the limit lug (62) is arranged in the valve casing (1).

3. A valve body for use in a pipe according to claim 2, characterised in that the limit projection (62) is turned in the limit chute (13) by a maximum angle of 90 °.

4. A valve body for use in a pipe according to claim 2, characterized in that the first control lever (40) is provided laterally with a fitting block (42), the resilient locking member (7) fitting within the fitting block (42); the control base (6) is provided with a locking groove (63) matched with the elastic locking piece (7).

5. A valve body for use in a pipe according to claim 4, characterized in that the elastic locking element (7) comprises a restraining post (71) provided with a locking seat (72) at the end, the restraining post (71) being slidingly fitted with a fitting block (42); a pressure spring (74) is arranged between the locking seat (72) and the assembly block (42); a locking head (73) matched with the locking groove (63) is arranged in the locking seat (72).

6. A valve body for use in a pipe according to claim 5, wherein the locking head (73) is a ball and the locking groove (63) is a hemispherical recess.

7. A valve body for a pipeline according to claim 1, characterized in that the water inlet flow channel (21) and the water outlet flow channel (22) are arranged in a structure that water inlet is arranged below and water outlet is arranged above, and the water inlet flow channel and the water outlet flow channel are communicated through an adjusting port (23); the adjusting head (55) is assembled at the end part of the second control rod (50) penetrating the water outlet flow channel (22) and is matched with the adjusting opening (23).

8. Valve body for use in a pipe according to claim 1, characterized in that a first seal (8) is fitted between the control base (6) and the valve spool (2), the second control rod (50) passing through the first seal (8).

9. Valve body for use in a pipe according to claim 1, characterised in that the valve body is provided with a second seal (9) on the side of the inlet flow channel (21) or outlet flow channel (22) in abutment with the valve element (2).