Rotatable sealing plug and valve rod

Abstract

The utility model relates to the technical field of valve sealing, in particular to a rotatable sealing plug and a valve rod, which comprise a plug main body, one end of the plug main body is fixedly connected with a rotary clamping head, the rotary clamping head is rotatably clamped with a threaded rod body, and the middle part of the plug main body is sleeved with a first sealing ring and a second sealing ring. The middle part of the threaded rod body is in threaded connection with a secondary rotary fastening assembly; according to the rotatable sealing plug and the valve rod, the rotary clamping groove is formed in one end of the threaded rod body, the plug body connected with the rotary clamping head is rotationally clamped, and the first screwing block is screwed to drive the threaded rod body to rotate downwards in the valve body to extrude the plug body to move downwards; the situation that the plug body rubs the inner wall of the valve body along with rotation and is damaged is avoided, the sealing ring is prevented from loosening under the action of the anti-loosening check block in the downward moving process, after the first screwing block is screwed down, the plug body closes the inner opening of the valve body, the secondary rotation fastening assembly is inserted and screwed down, and therefore secondary extrusion on the plug body can be achieved, and sealing performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve sealing technical field, concretely is a rotatable sealing plug and valve rod. BACKGROUND

[0002] The valve rod is a key component of the valve, is used for transmission and control the movement or rotation of the valve core, thereby realizes the switch or adjustment function of the valve, it acts as a moving part, force -bearing part and sealing part in the valve opening and closing process, needs to have enough strength, corrosion resistance and abrasion resistance, and the plug is the structure that is used for closing the opening of the valve or pipeline at one end of the valve rod.

[0003] The valve rod is disclosed in the Chinese patent with the publication number CN219159691 U, comprising a valve rod main body, the valve rod main body comprises the connecting section, the stop section, the screw thread section and the sealing section that are integrally connected in turn from top to bottom, the screw thread section outer wall is provided with external thread, the sealing section outer wall below the external thread is provided with annular sealing groove, the annular sealing groove is internally provided with sealing ring, the lower end surface of the sealing section is fixedly connected with rubber pad, the stop section outer wall is provided with a plurality of annularly spaced stop teeth around the valve rod axis, the stop groove is formed between the adjacent two stop teeth, each stop tooth and stop groove extend from the upper end of the stop section to the lower end of the stop section, compared with the prior art, the utility model is provided with the stop section with the stop slide tooth and the stop slide groove on the external thread upper end of the valve rod main body, so that it can cooperate with the elastic abutting piece to limit the spontaneous movement of the valve rod due to water pressure fluctuation.

[0004] The valve rod in the above scheme and the prior art is usually fixedly connected with the plug structure with the sealing rubber ring at one end of the valve rod, the plug is moved downward to block the flow-through opening in the valve body to control the passing and closing of the fluid by screwing the threads between the valve rod and the valve body, but such structure causes the sealing rubber ring on the plug to rotate while the plug is rotated and moved downward by the valve rod, the sealing rubber ring rubs against the inner wall of the valve body during the rotation process, and the sealing rubber ring is damaged and causes the sealing to be not tight and leakage after a short time, and there is no structure to prevent the sealing rubber ring on the plug from rotating and rubbing against the inner wall of the valve body, so improvement and optimization are needed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a rotatable sealing plug and valve rod to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model

[0007] The technical scheme is provided as follows: a rotatable sealing plug head comprises a plug head body, one end of the plug head body is fixedly connected with a rotating clamp head, the rotating clamp head is rotatably clamped with a threaded rod body, a first sealing ring and a second sealing ring are sleeved in the middle part of the plug head body, and a secondary rotating fastening assembly is threadedly connected to the middle part of the threaded rod body.

[0008] Preferably, one end of the plug head body is provided with an extrusion cone head, and the middle part of the plug head body is provided with a first sealing groove and a second sealing groove.

[0009] Preferably, the first sealing groove is sleeved with a first sealing ring, and the second sealing groove is sleeved with a second sealing ring; a group of anti-disengagement stop blocks is arranged on the two sides of the first sealing ring, and a group of anti-disengagement stop blocks is arranged on the two sides of the second sealing groove.

[0010] Preferably, the outer circle of the rotating clamp head is rotatably embedded with a ball, and one end of the rotating clamp head is fixedly connected with a first magnet.

[0011] Preferably, one end of the threaded rod body is provided with a rotating clamp groove, the outer circle of the threaded rod body is provided with an external thread, the middle part of the threaded rod body is provided with an internal thread hole, the secondary rotating fastening assembly is threadedly connected to the internal thread hole, and one end of the threaded rod body is fixedly connected with a first twisting block.

[0012] Preferably, the middle part of the rotating clamp groove is provided with a rolling groove, and the rolling groove is extruded and rotatably provided with a ball.

[0013] Preferably, the secondary rotating fastening assembly comprises an extrusion threaded column, the extrusion threaded column is inserted through the first twisting block and threadedly connected to the internal thread hole, one end of the extrusion threaded column is fixedly connected with a second heteropolar magnet, and one end of the extrusion threaded column is fixedly connected with a second twisting block.

[0014] A valve rod comprises a rotatable sealing plug head.

[0015] Compared with the prior art, the rotatable sealing plug head and valve rod have the following beneficial effects:

[0016] The rotatable sealing plug head and valve rod are mainly characterized in that a rotating clamp groove is arranged at one end of a threaded rod body, a plug head body rotatably clamped with a rotating clamp head is driven to rotate downward in a valve body by twisting a first twisting block, so that the plug head body is extruded to move downward, thereby avoiding damage to the valve body caused by the plug head body following rotation and rubbing the inner wall of the valve body; the sealing ring is prevented from loosening during the downward movement under the action of the anti-disengagement stop blocks; after the first twisting block is tightened to close the opening in the valve body, the secondary rotating fastening assembly is inserted and tightened, so that the plug head body is extruded again to increase the sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of a rotatable sealing plug head and valve rod.

[0018] Figure 2 is a partial structure sectional view of a rotatable sealing plug and valve stem;

[0019] Figure 3 is Figure 2 is an enlarged schematic view of a middle A part;

[0020] Figure 4 is an exploded structure sectional view of a rotatable sealing plug and valve stem;

[0021] Figure 5 is Figure 4 is an enlarged schematic view of a middle B part.

[0022] In the figure: plug body 1, extrusion cone head 101, first sealing groove 102, second sealing groove 103, anti-falling block 104, rotating clamp 2, ball 201, first magnet 202, threaded rod body 3, rotating clamp groove 301, external thread 302, internal thread hole 303, first twisting block 304, rolling groove 305, first sealing ring 4, second sealing ring 5, extrusion threaded column 601, second heteropolar magnet 602, second twisting block 603. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme of the utility model to carry out clearly, completely describe, and the advantage is more clear and distinct, the following combining the drawing to the utility model embodiment carries out further detailed explanation. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor, belong to the scope of the protection of the utility model.

[0024] Please refer to Figures 1-5 The utility model provides the following two preferred scheme embodiments:

[0025] Embodiment one: a rotatable sealing plug and valve stem includes a plug body 1, one end of the plug body 1 is fixedly connected with a rotating clamp head 2, the rotating clamp head 2 is rotatably clamped with a threaded rod body 3, the plug body 1 is sleeved with a first sealing ring 4 and a second sealing ring 5 in the middle, the threaded rod body 3 is threadedly connected with a secondary rotation fastening assembly in the middle; the plug body 1 is provided with an extrusion cone head 101 at one end, and is provided with a first sealing groove 102 and a second sealing groove 103 in the middle; the first sealing ring 4 is sleeved in the first sealing groove 102, and the second sealing ring 5 is sleeved in the second sealing groove 103; a group of anti-loosening stop blocks 104 are arranged on both sides of the first sealing ring 4, and a group of anti-loosening stop blocks 104 are arranged on both sides of the second sealing ring 5; the rotating clamp head 2 is rotatably embedded with a plurality of rolling balls 201 on the outer ring, and the rotating clamp head 2 is fixedly connected with a first magnet 202 at one end; the threaded rod body 3 is provided with a rotating clamp groove 301 at one end, is provided with an external thread 302 on the outer ring, is provided with an internal thread hole 303 in the middle, and is threadedly connected with the secondary rotation fastening assembly; the threaded rod body 3 is fixedly connected with a first twisting block 304 at one end; the rotating clamp groove 301 is provided with a rolling groove 305 in the middle, and the rolling groove 305 is extruded and rolled with the rolling balls 201.

[0026] A valve stem, comprising a rotatable sealing plug.

[0027] In use, the external thread 302 on the outside of the threaded rod body 3 is threadedly connected with the inner wall of the valve body, the secondary rotation fastening assembly is rotated and unscrewed before the first twisting block 304 is twisted with a tool, the first twisting block 304 is twisted to drive the threaded rod body 3 to rotate downward, at the same time, the rotating clamp head 2 at one end of the plug body 1 is extruded and rotated, when the rotating clamp head 2 and the rotating clamp groove 301 rotate relative to each other, the rolling groove 305 and the rotating rolling of the rolling balls 201 reduce the friction between the rotating clamp head 2 and the rotating clamp groove 301, while the threaded rod body 3 is twisted downward, the plug body 1 is also extruded downward, wherein the extrusion cone head 101 extrudes the valve body opening to close the valve, the first sealing ring 4 and the second sealing ring 5 in the first sealing groove 102 and the second sealing groove 103 increase the sealing performance, and are prevented from loosening under the action of the anti-loosening stop blocks 104 during the downward movement.

[0028] Embodiment two: on the basis of embodiment one, the secondary rotation fastening assembly includes an extrusion threaded column 601, the extrusion threaded column 601 is inserted through the first twisting block 304 and is threadedly connected with the internal thread hole 303, the extrusion threaded column 601 is fixedly connected with a second heteropolar magnet 602 at one end, and is fixedly connected with a second twisting block 603 at one end.

[0029] When in use, after the extrusion cone head 101 extrudes the valve body opening to close the valve, because a small gap is needed between the rotating clamping head 2 and the rotating clamping groove 301 for rotation fixation, a small leakage may occur, at this time the extrusion threaded column 601 on the secondary rotation fastening assembly is inserted through the first screw block 304 and the threaded connection inner threaded hole 303, and the second screw block 603 is tightened with a tool, and when being tightened, the second heteropolar magnet 602 extrudes and repels the rotating clamping head 2 connected with the first magnet 202, so that the small gap between the rotating clamping head 2 and the rotating clamping groove 301 is pressed to avoid leakage.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotatable seal plug comprising a plug body (1), characterised in that: One end of the plug body (1) is fixedly connected with a rotating clamp head (2), the rotating clamp head (2) is rotatably clamped with a threaded rod body (3), the plug body (1) is sleeved with a first sealing ring (4) and a second sealing ring (5) in the middle, and the threaded rod body (3) is threadedly connected with a secondary rotation fastening assembly in the middle.

2. A rotatable seal closure head according to claim 1, wherein: One end of the plug body (1) is provided with an extrusion cone head (101), and the middle of the plug body (1) is provided with a first sealing groove (102) and a second sealing groove (103).

3. A rotatable seal closure head according to claim 2, wherein: The first sealing groove (102) is sleeved with a first sealing ring (4), and the second sealing groove (103) is sleeved with a second sealing groove (103). The first sealing ring (4) is provided with a group of anti-dropping stoppers (104) on both sides, and the second sealing groove (103) is provided with a group of anti-dropping stoppers (104) on both sides.

4. A rotatable seal closure head according to claim 1, wherein: The outer circle of the rotating clamp head (2) is rotatably embedded with a ball (201), and one end of the rotating clamp head (2) is fixedly connected with a first magnet (202).

5. A rotatable seal closure head according to claim 1, wherein: One end of the threaded rod body (3) is provided with a rotating clamp groove (301), the outer circle of the threaded rod body (3) is provided with an external thread (302), the middle of the threaded rod body (3) is provided with an internal thread hole (303), the internal thread hole (303) is threadedly connected with a secondary rotation fastening assembly, and one end of the threaded rod body (3) is fixedly connected with a first twisting block (304).

6. A rotatable seal closure head according to claim 5, wherein: The rotating clamp groove (301) is provided with a rolling groove (305) in the middle, and the rolling groove (305) is extruded and rolled with a ball (201) therein.

7. A rotatable seal closure head according to claim 1, wherein: The secondary rotation fastening assembly comprises an extrusion threaded column (601), the extrusion threaded column (601) is inserted through the first twisting block (304) and the threaded connection internal thread hole (303), one end of the extrusion threaded column (601) is fixedly connected with a second heteropolar magnet (602), and one end of the extrusion threaded column (601) is fixedly connected with a second twisting block (603).

8. A valve stem characterized by: The application relates to a rotatable sealing plug comprising the plug body (1), the rotating clamp head (2), the threaded rod body (3), the first sealing ring (4), the second sealing ring (5), the extrusion cone head (101), the first sealing groove (102), the second sealing groove (103), the ball (201), the first magnet (202), the rotating clamp groove (301), the external thread (302), the internal thread hole (303), the first twisting block (304), the rolling groove (305), the extrusion threaded column (601), the second heteropolar magnet (602) and the second twisting block (603).

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