Hard sealing ball valve

Abstract

The utility model discloses a hard seal ball valve, relates to ball valve field, including ball valve main part, the inside of ball valve main part is rotatingly connected with a valve rod, the inside of said valve rod is movably inserted with a plug-in rod, and the plug-in rod realizes the movement in the plug-in groove reserved inside the valve rod through spring one, and the top of the plug-in rod is fixedly connected with a turntable, and the turntable is fixedly connected with the ball valve main part. The device further comprises a plug-in assembly. And a positioning assembly. The rotating disc is rotated to drive the inserting rod to rotate, when the notch of the positioning groove is opposite to the position of the positioning square block, the rotating disc is pressed downwards to enable the clamping block in the inserting rod to synchronously descend and be accurately positioned into the vertical groove, then the rotating disc continues to be rotated to drive the whole valve rod to rotate, and opening and closing of the valve are conveniently achieved; and subsequent elastic force of the first spring abuts against the inserting rod to do upward reset motion, the clamping block enters the annular groove, and when the rotating disc is rotated subsequently, rotation of the inserting rod cannot drive the valve rod to rotate, so that the situation that opening and closing of the ball valve body are affected after the rotating disc is touched by mistake is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ball valve, concretely relates to a hard sealing ball valve. BACKGROUND

[0002] The sealing ball valve can be divided into a soft sealing ball valve and a hard sealing ball valve, wherein the hard sealing ball valve can maintain good sealing performance under high temperature and high pressure environment due to its unique sealing structure and material selection, and is suitable for harsh working conditions.

[0003] The existing ball valve still has some problems in use: the existing ball valve has no locking structure when the valve rod rotates, and the valve rod may drive the rotation of the ball valve and open and close the valve if it is accidentally touched, which may affect the overall use of the ball valve.

[0004] Therefore, it is necessary to invent a hard sealing ball valve to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a hard sealing ball valve to solve the problem that the existing ball valve has no locking structure when the valve rod rotates, and the valve rod may drive the rotation of the ball valve and open and close the valve if it is accidentally touched, which may affect the overall use of the ball valve.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a hard sealing ball valve, which comprises a ball valve body, a valve rod rotatably connected inside the ball valve body, an insertion rod movably inserted into the valve rod, and a spring one movably arranged in an insertion slot reserved in the valve rod, and a rotating disc fixedly connected to the top of the insertion rod, and further comprising:

[0007] An insertion assembly is arranged in the insertion rod, an active cavity is formed in the insertion rod, a clamping block is movably connected to the active cavity through a spring two, and the clamping block is slidably connected to an annular groove and a vertical groove reserved in the valve rod, the rotating disc is pressed down to drive the insertion rod to synchronously descend, the clamping block moves downward to the inside of the vertical groove, and the rotating disc is continuously rotated to drive the rotation of the whole valve rod, so that the opening and closing of the valve are facilitated;

[0008] A positioning assembly is arranged, the valve rod top is fixedly connected with a positioning block, the positioning block is opposite to the notch position of a positioning slot reserved in the insertion rod, and when the notch of the positioning slot reserved in the insertion rod is opposite to the position of the positioning block, the rotating disc is pressed down to drive the clamping block movably connected in the insertion rod to synchronously descend and accurately match the vertical groove.

[0009] Preferably, the upper end of the spring is fixedly connected with the lower end of the plug-in rod, the lower end of the spring is fixedly connected with the top wall of the rotating block, and the rotating block rotates in the rotating groove reserved in the valve rod, and the rotating groove is communicated with the plug-in groove, so that the spring does not hinder the rotation of the plug-in rod when the plug-in rod is pressed down and rotated.

[0010] Preferably, the rotating block is composed of a large disc and a small disc integrally installed on the top of the large disc, the outer walls of the large disc and the small disc are in close contact with the inner wall of the rotating groove and are rotationally connected, and the lower end of the spring is fixedly connected with the top wall of the small disc, so that the rotating block can be rotationally connected with the plug-in groove without falling off.

[0011] Preferably, the inner wall of the groove reserved in the clamping block is in close contact with the outer wall of the fixed block and is slidably connected, and the outer wall of the fixed block is fixedly connected with one end of the spring, and the other end of the spring is fixedly connected with the inner wall of the groove.

[0012] Preferably, the annular groove is communicated with the vertical groove, and the two sides of the annular groove are provided with openings, and the plug-in rod can be removed after the clamping block is moved to the inside of the movable cavity through the openings, so that the rotation of the ball valve body can be prevented, the safety factor of the ball valve body is increased, and the opening and closing of the ball valve by outsiders can be avoided.

[0013] Preferably, the two positioning blocks are symmetrically arranged with the vertical central axis of the plug-in rod as the axis of symmetry, and when the two positioning blocks are opposite to the two side slots of the positioning groove, the clamping block inside the plug-in rod is lowered and accurately matched with the vertical groove, facilitating the rotation of the valve rod.

[0014] In the above technical scheme, the technical effects and advantages of the utility model are provided:

[0015] 1. The utility model discloses a rotating disc drives the plug-in rod to rotate, when the slot of the positioning groove is opposite to the position of the positioning block, the clamping block inside the plug-in rod is lowered and accurately positioned to the inside of the vertical groove by pressing down the rotating disc, and then the rotating disc is continuously rotated to drive the rotation of the whole valve rod, so that the opening and closing of the valve can be conveniently realized, the elastic force of the subsequent spring one pushes the plug-in rod to move upwardly, the clamping block enters the inside of the annular groove, and when the rotating disc is rotated again, the rotation of the plug-in rod will not drive the rotation of the valve rod, so that the influence of the opening and closing of the ball valve body caused by the accidental touch of the rotating disc is avoided.

[0016] 2. The plug-in rod can be removed after the clamping block is moved to the inside of the movable cavity through the openings communicated with the annular groove, so that the rotation of the ball valve body can be prevented, the safety factor of the ball valve body is increased, and the opening and closing of the ball valve by outsiders can be avoided. DRAWINGS

[0017] In order to make the technical scheme of the embodiments of the present application or the prior art clearer, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 It is an overall structure perspective view of the present application.

[0019] Figure 2 It is an overall structure exploded view of the present application.

[0020] Figure 3 It is an internal structure exploded view of the valve rod (partly cut state) of the present application.

[0021] Figure 4 It is an internal structure exploded view of the plug-in rod (partly cut state) of the present application.

[0022] Explanation of reference signs:

[0023] 1, ball valve body; 101, valve rod; 2, plug-in rod; 3, rotating disc; 4, spring one; 5, rotating block; 501, large disc; 502, small disc; 6, rotating groove; 7, plug-in assembly; 701, movable cavity; 702, clamping block; 703, spring two; 704, channel; 705, annular groove; 706, vertical groove; 707, fixed block; 8, positioning assembly; 801, positioning block; 802, positioning groove. DETAILED DESCRIPTION

[0024] In order to make the technical scheme of the embodiments of the present application or the prior art clearer, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0025] The present application provides a kind of hard sealing ball valve as shown in Figures 1-4 The present application provides a kind of hard sealing ball valve as shown in

[0026] The plug assembly 7 is internally provided with a movable cavity 701, the movable cavity 701 is internally movably connected with a clamping block 702 through a spring 703, the clamping block 702 is slidably connected with an annular groove 705 and a vertical groove 706 reserved in the valve rod 101, the plug rod 2 is synchronously lowered by the pressing of the rotating disc 3, the clamping block 702 is moved to the inside of the vertical groove 706, and the rotating disc 3 is continuously rotated to drive the rotation of the whole valve rod 101, so that the opening and closing of the valve is conveniently realized.

[0027] The positioning assembly 8 is fixedly connected with a positioning block 801 at the top of the valve rod 101, and the positioning block 801 is opposite to the notch position of the positioning groove 802 reserved in the plug rod 2, when the notch of the positioning groove 802 reserved in the plug rod 2 is opposite to the position of the positioning block 801, the clamping block 702 movably connected in the plug rod 2 is synchronously lowered by the pressing of the rotating disc 3, and is accurately matched with the vertical groove 706.

[0028] The upper end of the spring 4 is fixedly connected with the lower end of the plug rod 2, the lower end of the spring 4 is fixedly connected with the top wall of the rotating block 5, the rotating block 5 rotates in the rotating groove 6 reserved in the valve rod 101, and the rotating groove 6 is communicated with the plug groove, so that the spring 4 does not hinder the rotation of the plug rod 2 when the plug rod 2 is pressed and rotated.

[0029] The rotating block 5 is composed of a large disc 501 and a small disc 502 integrally installed at the top of the large disc 501, the outer walls of the large disc 501 and the small disc 502 are matched with the inner wall of the rotating groove 6 and are rotatably connected, the lower end of the spring 4 is fixedly connected with the top wall of the small disc 502, and the rotating block 5 is rotatably connected with the plug groove without falling off.

[0030] The inside of the movable cavity 701 is fixedly connected with a fixed block 707 at the central position, the outer wall of the fixed block 707 is slidably connected with the inner wall of the groove 704 reserved in the clamping block 702, and the outer wall of the fixed block 707 is fixedly connected with one end of the spring 703, the other end of the spring 703 is fixedly connected with the inner wall of the groove 704.

[0031] The annular groove 705 is communicated with the vertical groove 706, and the two sides of the annular groove 705 are provided with openings, the plug rod 2 can be taken down by pushing the clamping block 702 to move to the inside of the movable cavity 701 through the openings, so that the rotation of the ball valve body 1 is prevented, the safety factor of the ball valve body 1 is increased, and the opening and closing of the ball valve by outsiders is avoided.

[0032] The positioning blocks 801 are provided in two in number, and the two positioning blocks 801 are symmetrically arranged with the vertical center axis of the plug-in rod 2 as the axis of symmetry, when the two positioning blocks 801 are opposite to the two side notches of the positioning groove 802, at this time, the pressing down of the rotating disc 3 drives the clamping block 702 inside the plug-in rod 2 to descend and accurately match the vertical groove 706, facilitating the subsequent rotation of the valve rod 101.

[0033] Working principle: when using a hard sealing ball valve, first, rotate the rotating disc 3 fixedly connected to the upper end of the plug-in rod 2 to drive the rotation of the plug-in rod 2 fixedly connected to the rotating disc 3, so that the notch of the preset positioning groove 802 inside the plug-in rod 2 is opposite to the position of the positioning block 801, and then press down the rotating disc 3 to drive the synchronous descent of the plug-in rod 2, at this time, the clamping block 702 movably connected inside the plug-in rod 2 moves synchronously to the inside of the vertical groove 706, because the inner wall of the vertical groove 706 is in contact with the outer wall of the clamping block 702 and realizes the up-down sliding connection, after the clamping block 702 moves downward to the inside of the vertical groove 706, continue to rotate the rotating disc 3 to drive the rotation of the whole valve rod 101, which is convenient for opening and closing the valve, when the valve rod 101 is not rotated again, the elastic force of the spring 4 pushes the plug-in rod 2 upward, at this time, the clamping block 702 movably connected inside the plug-in rod 2 enters the inside of the annular groove 705, when the rotating disc 3 is rotated again, the rotation of the plug-in rod 2 will not drive the rotation of the valve rod 101, which avoids the influence on the opening and closing of the ball valve body 1 caused by the accidental touch of the rotating disc 3.

[0034] At the same time, when the rotating disc 3 drives the rotation of the plug-in rod 2, the spring 4 fixedly connected to the lower end of the plug-in rod 2 is connected with the rotating block 5 rotatably connected inside the plug-in groove, so that when the plug-in rod 2 is pressed down and rotated, the spring 4 will not hinder the rotation of the plug-in rod 2, and at the same time, the reset movement of the spring 4 is not affected.

[0035] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A hard-seal ball valve, comprising a ball valve body (1), characterized in that, The ball valve body (1) is rotatably connected to a valve stem (101), and a plug rod (2) is movably inserted into the valve stem (101). The plug rod (2) moves within a pre-reserved plug groove inside the valve stem (101) via a spring (4). A turntable (3) is fixedly connected to the top of the plug rod (2). The valve body also includes: The plug-in assembly (7) has a movable cavity (701) inside the plug-in rod (2), and the movable cavity (701) is movably connected to the locking block (702) through the second spring (703). The locking block (702) is slidably connected to the annular groove (705) and the vertical groove (706) reserved inside the valve stem (101). The positioning component (8) has a positioning block (801) fixedly connected to the top of the valve stem (101), and the positioning block (801) is opposite to the slot of the positioning groove (802) reserved inside the plug rod (2).

2. A hard-seal ball valve according to claim 1, characterized in that, The upper end of the spring (4) is fixedly connected to the lower end of the plug rod (2), and the lower end of the spring (4) is fixedly connected to the top wall of the rotating block (5). The rotating block (5) rotates inside the rotating groove (6) reserved inside the valve stem (101), and the rotating groove (6) is connected to the plug groove.

3. A hard-seal ball valve according to claim 2, characterized in that, The rotating block (5) consists of a large disc (501) and a small disc (502) integrally installed with the top of the large disc (501). The outer walls of the large disc (501) and the small disc (502) are attached to the inner wall of the rotating groove (6) to achieve rotational connection. The lower end of the spring (4) is fixedly connected to the top wall of the small disc (502).

4. A hard-seal ball valve according to claim 1, characterized in that, A fixing block (707) is fixedly connected to the center of the interior of the movable cavity (701), and the outer wall of the fixing block (707) is attached to the inner wall of the groove (704) reserved inside the card block (702) to achieve a sliding connection. The outer wall of the fixing block (707) is fixedly connected to one end of the second spring (703), and the other end of the second spring (703) is fixedly connected to the inner wall of the groove (704).

5. A hard-seal ball valve according to claim 1, characterized in that, The annular groove (705) is connected to the vertical groove (706), and the annular groove (705) has openings on both sides.

6. A hard-seal ball valve according to claim 1, characterized in that, The positioning blocks (801) are provided in two quantities, and the two positioning blocks (801) are symmetrically arranged with reference to the vertical central axis of the plug rod (2).

Images