CN218894968U - Stop valve - Google Patents

Abstract

The utility model discloses a stop valve, which structurally comprises a valve body, a valve cover fixedly arranged at the upper end of the valve body, and a valve rod nut fixedly arranged at the upper end of the valve cover, wherein a valve rod is connected to the valve rod nut in a threaded manner, the lower end of the valve rod extends into the valve body and is connected with a valve clack, the upper end of the valve rod extends to the upper part of the valve rod nut and is connected with a rotating seat, a fixed ring is arranged on the outer ring of the rotating seat, the upper end of the fixed ring is connected with a hand wheel through a sliding component, the hand wheel is rotationally connected with the fixed ring through a sliding component, a fixed cylinder is arranged at the center of the hand wheel and is connected with a clamping piece, the upper end of the fixed cylinder is rotationally provided with an adjusting knob, and a positioning component matched with the adjusting knob is arranged in the fixed cylinder, and is used for controlling the clamping piece to be close to or far away from the valve rod so as to clamp or separate from the clamping piece and the valve rod.

Description

Stop valve

Technical Field

The utility model relates to the technical field of valves, in particular to a stop valve.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so that when the valve is closed, pressure must be applied to the valve clack so as to force the sealing surface not to leak. When a medium enters the valve from the lower part of the valve clack, the resistance which needs to be overcome by the operation force is the friction force of the valve rod and the filler and the thrust generated by the pressure of the medium, and the force for closing the valve is larger than the force for opening the valve, so that the diameter of the valve rod is larger, otherwise, the valve rod is in a bending fault.

Currently, chinese patent with publication number CN209781710 discloses a stop valve, which comprises a valve body, be provided with the gasket between valve gap and the valve body, the valve gap is through movable joint bolt fixedly connected with clamp plate, fixedly connected with valve rod nut on the clamp plate, threaded connection has the valve rod on the valve rod nut, the valve rod lower extreme extends to in the valve body, valve rod lower extreme swing joint has the valve clack, fixedly connected with guide block on the valve clack, be provided with the guide rail on the valve body inner wall, the guide block slides and sets up in the guide rail, valve rod nut outside fixedly connected with fixed plate, be connected with the spring through slide mechanism on the fixed plate, the other end fixedly connected with hand wheel of spring, hand wheel lower extreme both sides fixedly connected with fixed column, valve rod upper end both sides fixedly connected with limiting plate, set up the fixed orifices on the limiting plate, have prevented the circumstances that open by mistake closes, the characteristics of valve life are favorable to lengthen simultaneously; however, in the process of opening and closing the valve every time, the hand wheel is required to be pressed downwards all the time to enable the fixed column 12 to be inserted into the fixed hole 14, the hand wheel can drive the valve rod to realize state switching, and partial force is required to be dispersed on the hand wheel to be pressed downwards all the time when an operator opens and closes the valve, so that the valve is laborious to open and close.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a stop valve so as to solve the technical problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a stop valve, including the valve body, fixed mounting is in the valve gap of valve body upper end, fixed setting is at valve gap upper end valve rod nut, threaded connection has the valve rod on the valve rod nut, the valve rod lower extreme extends to in the valve body and is connected with the valve clack, the valve rod upper end extends to valve rod nut top and is connected with the rotating seat, the rotating seat outer lane is provided with solid fixed ring, gu fixed ring upper end is connected with the hand wheel through sliding component, the hand wheel passes through sliding component and gu fixed ring's rotation is connected, hand wheel center department is provided with solid fixed cylinder and solid fixed cylinder is connected with the fastener, gu fixed cylinder upper end rotation is provided with adjust knob and embeds and adjust knob complex locating component, locating component is used for controlling the fastener to be close to or keep away from the valve rod and then realize the chucking or the break away from of fastener and valve rod.

The utility model is further provided with: the sliding component comprises a sliding rail which is annularly arranged on the upper end face of the fixed ring, the sliding rail and the valve rod are coaxially arranged, a plurality of sliding blocks are arranged on the sliding rail, the upper end of each sliding block is connected with a sliding rod, and the upper ends of the sliding rods are fixedly connected with a hand wheel.

The utility model is further provided with: the positioning assembly comprises a cavity arranged in the fixed cylinder, a sliding seat is arranged in the cavity, the lower end of the sliding seat is connected with a guide column, the guide column penetrates through the lower portion of the fixed cylinder and is connected with the clamping piece, a reset spring is sleeved between the guide column outer ring and the bottom wall in the sliding seat and the fixed cylinder, and a rotating column for promoting the sliding seat to move downwards along the cavity is arranged at the inner end of the adjusting knob.

The utility model is further provided with: the sliding seat upper end face is provided with a groove, two first arc grooves are correspondingly formed in two sides of the groove, two second arc grooves are correspondingly formed between the two first arc grooves, the rotating column is in running fit with the fixed cylinder, the inner end of the rotating column extends into the groove, and two side plates matched with the first arc grooves or the second arc grooves are correspondingly arranged on the outer peripheral face of the inner end of the rotating column.

The utility model is further provided with: the clamping piece comprises a fixed plate connected with the guide posts, at least two limit posts are correspondingly arranged at the lower end of the fixed plate, a clamping ring is arranged at the outer side of the upper end of the valve rod, and a plurality of limit holes matched with the size and the number of the limit posts are formed in the clamping ring.

The utility model is further provided with: the lower end face of each limiting column is provided with a movable hole, each movable hole is internally provided with a movable column, a rollback spring is fixedly connected between the inner end face of each movable column and the inner bottom face of each movable hole, and the outer end of each movable column is connected with a limiting head matched with the corresponding limiting hole.

The utility model is further provided with: the outer peripheral surface of the fixed cylinder is provided with a marking ring, and the upper end of the adjusting knob is provided with a marking block matched with the marking ring.

In summary, the utility model has the following beneficial effects: when the opening and closing of the valve are required to be controlled, the adjusting knob is rotated, the clamping piece is driven to be close to the valve rod through the cooperation between the adjusting knob and the positioning assembly, and the clamping piece and the valve rod form limit clamping, so that the opening and closing of the valve rod can be controlled by rotating the hand wheel; when the valve is not required to be controlled to be opened or closed (the valve is in a daily use state), the adjusting knob is rotated, the clamping piece is driven to be away from the valve rod through the cooperation between the adjusting knob and the positioning assembly, the limiting clamping between the clamping piece and the valve rod is eliminated, and the opening and closing state of the valve cannot be changed due to rotation of the hand wheel; the utility model can rapidly control the clamping or separating between the hand wheel and the valve rod by only rotating the adjusting knob, thereby avoiding the error change of the opening and closing state of the valve caused by the error rotation of the hand wheel due to the action of external force.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a portion of the structure of the present utility model;

FIG. 3 is an enlarged schematic view of a partial structure at A in FIG. 2;

FIG. 4 is an enlarged schematic view of a partial structure at B in FIG. 2;

fig. 5 is a schematic diagram showing the cooperation of the side plate with the first arc-shaped groove and the second arc-shaped groove.

Reference numerals: 1. a valve body; 10. a valve cover; 11. a valve stem nut; 12. a valve stem; 13. a valve flap; 2. a rotating seat; 20. a fixing ring; 21. a hand wheel; 22. a slide rail; 23. a slide block; 24. a slide bar; 3. a fixed cylinder; 30. an adjustment knob; 31. a cavity; 32. a sliding seat; 33. a guide post; 34. a return spring; 35. rotating the column; 36. a groove; 37. a first arc-shaped groove; 38. a second arc-shaped groove; 39. a side plate; 4. a clamping piece; 40. a fixing plate; 41. a limit column; 42. a clamping ring; 43. a limiting hole; 44. a movable hole; 45. a movable column; 46. a retraction spring; 47. a positioning head; 5. an identification ring; 50. the block is identified.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, a stop valve according to an embodiment of the present utility model includes a valve body 1, a valve cap 10 fixedly installed at an upper end of the valve body 1, a valve rod nut 11 fixedly installed at an upper end of the valve cap 10, a valve rod 12 screwed on the valve rod nut 11, a valve rod 12 extending into the valve body 1 and connected with a valve clack 13, a rotating seat 2 extending above the valve rod nut 11 and connected with an upper end of the valve rod 12, a fixed ring 20 provided at an outer ring of the rotating seat 2, a hand wheel 21 connected with the upper end of the fixed ring 20 through a sliding assembly, a fixed cylinder 3 provided at a center of the hand wheel 21 and connected with a clamping member 4, an adjusting knob 30 rotatably installed at an upper end of the fixed cylinder 3 and having a positioning assembly engaged with the adjusting knob 30, the positioning assembly being used for controlling the clamping member 4 to approach or separate from the valve rod 12 so as to achieve clamping or separating of the clamping member 4 from the valve rod 12.

When the valve is required to be controlled to be opened and closed in use, the adjusting knob 30 is rotated, the clamping piece 4 is driven to be close to the valve rod 12 through the cooperation between the adjusting knob 30 and the positioning assembly, and is clamped with the valve rod 12 in a limiting manner, and at the moment, the hand wheel 21 is rotated to control the valve rod 12 to be opened and closed; when the valve is not required to be controlled to be opened or closed (the valve is in a daily use state), the adjusting knob 30 is rotated, the clamping piece 4 is driven to be away from the valve rod 12 through the cooperation between the adjusting knob 30 and the positioning assembly, the limiting clamping between the clamping piece 4 and the valve rod 12 disappears, and the opening and closing state of the valve cannot be changed due to the rotation of the hand wheel 21; the clamping or separating between the hand wheel 21 and the valve rod 12 can be quickly controlled by only rotating the adjusting knob 30, so that the error change of the opening and closing state of the valve caused by the error rotation of the hand wheel 21 due to the action of external force is avoided.

The sliding component comprises a sliding rail 22 which is annularly arranged on the upper end face of the fixed ring 20, the sliding rail 22 and the valve rod 12 are coaxially arranged, a plurality of sliding blocks 23 are arranged on the sliding rail 22, the upper end of each sliding block 23 is connected with a sliding rod 24, and the upper end of each sliding rod 24 is fixedly connected with the hand wheel 21.

When in use, the sliding fit between the sliding block 23 and the sliding rail 22 ensures stable connection between the hand wheel 21 and the fixed ring 20 and ensures smoothness when the hand wheel 21 rotates.

The positioning assembly comprises a cavity 31 arranged in the fixed cylinder 3, a sliding seat 32 is arranged in the cavity 31, a guide column 33 is connected to the lower end of the sliding seat 32, the guide column 33 penetrates through the lower part of the fixed cylinder 3 and is connected with the clamping piece 4, a reset spring 34 is sleeved on the outer ring of the guide column 33 and positioned between the sliding seat 32 and the inner bottom wall of the fixed cylinder 3, and a rotating column 35 for promoting the sliding seat 32 to move downwards along the cavity 31 is arranged at the inner end of the adjusting knob 30; the upper end face of the sliding seat 32 is provided with a groove 36, two first arc grooves 37 are correspondingly arranged on two sides of the groove 36, two second arc grooves 38 are correspondingly arranged between the two first arc grooves 37, the rotating column 35 is in rotating fit with the fixed cylinder 3, the inner end extends into the groove 36, and two side plates 39 matched with the first arc grooves 37 or the second arc grooves 38 are correspondingly arranged on the outer peripheral face of the inner end of the rotating column 35.

When the valve is used, the first arc grooves 37 are correspondingly arranged in pairs, the depth of the first arc grooves 37 is larger than that of the second arc grooves 38, two side plates 39 on the outer peripheral surface of the rotating column 35 are positioned in the two first arc grooves 37 in an initial state (when the valve is not required to be controlled to be opened or closed), and are positioned at the deepest part of the first arc grooves 37, at the moment, the sliding seat 32 slides towards the upper top wall of the cavity 31 due to the acting force of the return spring 34, the sliding seat 32 promotes the clamping piece 4 to be far away from the valve rod 12 through the guide post 33, at the moment, the limiting clamping between the clamping piece 4 and the valve rod 12 disappears, and the opening and closing state of the valve cannot be changed due to the rotation of the hand wheel 21; when the opening and closing of the valve are required to be controlled, the adjusting knob 30 is rotated, the two side plates 39 on the outer peripheral surface of the rotating column 35 are caused to slide out of the first arc-shaped groove 37 and enter the second arc-shaped groove 38, the depth of the second arc-shaped groove 38 is smaller than that of the first arc-shaped groove 37, so that the sliding seat overcomes the acting force of the reset spring 34 and slides towards the lower bottom wall of the cavity 31, the sliding seat 32 causes the clamping piece 4 to be close to the valve rod 12 through the guide column 33 and form limit clamping with the valve rod 12, and at the moment, the opening and closing of the valve rod 12 can be controlled by rotating the hand wheel 21; wherein, two guide grooves are correspondingly arranged on the inner wall surface of the sliding cavity, two guide blocks matched with the guide grooves are correspondingly arranged on the outer peripheral surface of the sliding seat 32, and the sliding path of the sliding seat is limited by the cooperation between the guide grooves and the guide blocks.

The clamping piece 4 comprises a fixed plate 40 connected with the guide post 33, at least two limit posts 41 are correspondingly arranged at the lower end of the fixed plate 40, a clamping ring 42 is arranged at the outer side of the upper end of the valve rod 12, and a plurality of limit holes 43 which are matched with the limit posts 41 in size and number are formed in the clamping ring 42.

When in use, the clamping piece 4 is separated from the valve rod 12 in the initial state (when the valve is not required to be controlled to be opened or closed); when the opening and closing of the valve are required to be controlled, the clamping piece 4 is driven to be close to the valve rod 12 through the adjusting knob 30, the clamping piece 4 is driven to be close to the valve rod 12, each limiting column 41 at the lower end of the clamping piece is driven to enter the corresponding limiting hole 43 of the limiting ring, limiting clamping between the clamping piece 4 and the valve rod 12 is achieved through matching between each limiting column 41 and the limiting hole 43, and at the moment, the hand wheel 21 is rotated to control the opening and closing of the valve rod 12.

The lower end face of each limiting column 41 is provided with a movable hole 44, a movable column 45 is arranged in each movable hole 44, a rollback spring 46 is fixedly connected between the inner end face of each movable column 45 and the inner bottom face of each movable hole 44, and the outer end of each movable column 45 is connected with a limiting head 47 matched with the corresponding limiting hole 43.

When the limiting column 41 is not aligned with the limiting hole 43 and the clamping piece 4 is pressed down in use, the limiting column 47 abuts against the upper end face of the clamping ring 42, the inner pressure of the movable column 45 causes the retraction spring 46 to be compressed, at the moment, the left and right micro-rotation hand wheels 21 cause the limiting column 41 to rotate to the position corresponding to the limiting hole 43, the movable column 45 causes the limiting head 47 to be clamped into the movable hole 44 due to the acting force of the retraction spring 46, limiting clamping between the clamping piece 4 and the valve rod 12 is completed, the situation that the limiting column 41 is aligned with the limiting hole 43 when a worker opens and closes each time is avoided, and the operation time is saved; both ends of the rollback spring 46 are fixedly connected with the inner bottom surface of the movable hole 44 of the inner end area of the movable column 45 respectively.

The outer peripheral surface of the fixed cylinder 3 is provided with a marking ring 5, and the upper end of the adjusting knob 30 is provided with a marking block 50 matched with the marking ring 5.

When in use, the staff can more intuitively know what use state the valve is in through the identification ring 5 and the identification block 50.

Also, the terms pointed out by the present utility model are as follows: the directional or positional relationships indicated by the terms "front", "rear", "vertical", "horizontal", etc., are based on the directional or positional relationships shown in the drawings, are merely for convenience in describing the utility model and to simplify the description, and are not indicative or implying that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed to limit the scope of the utility model.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (7)

1. The utility model provides a stop valve, is including valve body (1), fixed mounting valve gap (10) in valve body (1) upper end, fixed setting valve rod nut (11) in valve gap (10) upper end, its characterized in that: the novel valve is characterized in that the valve rod nut (11) is connected with the valve rod (12) through threads, the lower end of the valve rod (12) extends into the valve body (1) and is connected with the valve clack (13), the upper end of the valve rod (12) extends to the upper portion of the valve rod nut (11) and is connected with the rotating seat (2), the outer ring of the rotating seat (2) is provided with the fixed ring (20), the upper end of the fixed ring (20) is connected with the hand wheel (21) through the sliding component, the hand wheel (21) is connected with the rotation of the fixed ring (20) through the sliding component, the center of the hand wheel (21) is provided with the fixed cylinder (3) and the fixed cylinder (3) is connected with the clamping piece (4), the upper end of the fixed cylinder (3) is rotationally provided with the adjusting knob (30) and is internally provided with a positioning component matched with the adjusting knob (30), and the positioning component is used for controlling the clamping piece (4) to be close to or far away from the valve rod (12) so as to achieve clamping or separation of the clamping piece (4) and the valve rod (12).

2. The shut-off valve of claim 1, wherein: the sliding assembly comprises a sliding rail (22) which is annularly arranged on the upper end face of the fixed ring (20), the sliding rail (22) and the valve rod (12) are coaxially arranged, a plurality of sliding blocks (23) are arranged on the sliding rail (22), each sliding block (23) is connected with a sliding rod (24) at the upper end, and the upper ends of the sliding rods (24) are fixedly connected with a hand wheel (21).

3. The shut-off valve of claim 1, wherein: the positioning assembly comprises a cavity (31) arranged in a fixed cylinder (3), a sliding seat (32) is arranged in the cavity (31), a guide column (33) is connected to the lower end of the sliding seat (32), the guide column (33) penetrates through the lower portion of the fixed cylinder (3) and is connected with a clamping piece (4), a reset spring (34) is sleeved between the outer ring of the guide column (33) and the inner bottom wall of the sliding seat (32) and the fixed cylinder (3), and a rotating column (35) for promoting the sliding seat (32) to move downwards along the cavity (31) is arranged at the inner end of the adjusting knob (30).

4. A shut-off valve according to claim 3, wherein: the sliding seat (32) is provided with a groove (36), two first arc grooves (37) are correspondingly formed in two sides of the groove (36), two second arc grooves (38) are correspondingly formed between the two first arc grooves (37), the rotating column (35) is in rotating fit with the fixed cylinder (3) and the inner end of the rotating column extends into the groove (36), and two side plates (39) matched with the first arc grooves (37) or the second arc grooves (38) are correspondingly arranged on the outer peripheral surface of the inner end of the rotating column (35).

5. The shut-off valve of claim 1, wherein: the clamping piece (4) comprises a fixed plate (40) connected with the guide post (33), at least two limit posts (41) are correspondingly arranged at the lower end of the fixed plate (40), a clamping ring (42) is arranged at the outer side of the upper end of the valve rod (12), and a plurality of limit holes (43) which are matched with the limit posts (41) in size and number are formed in the clamping ring (42).

6. The shut-off valve of claim 5, wherein: the lower end face of each limit column (41) is provided with a movable hole (44), each movable hole (44) is internally provided with a movable column (45), a rollback spring (46) is fixedly connected between the inner end face of each movable column (45) and the inner bottom face of each movable hole (44), and the outer end of each movable column (45) is connected with a limit head (47) matched with the corresponding limit hole (43).

7. The shut-off valve of claim 1, wherein: the outer peripheral surface of the fixed cylinder (3) is provided with a marking ring (5), and the upper end of the adjusting knob (30) is provided with a marking block (50) matched with the marking ring (5).

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