Cast steel high-temperature ball valve with anti-loosening structure

Abstract

The utility model relates to the technical field of cast steel high-temperature ball valves, and discloses a cast steel high-temperature ball valve with an anti-loose structure, which comprises a valve body and a valve rod, a rotating mechanism is arranged on the surface of the valve body, a limiting mechanism is arranged on the front side of the rotating mechanism, the rotating mechanism comprises L blocks, the L blocks are symmetrically and fixedly connected to the surface of the valve body front and back, and the limiting mechanism is arranged on the front side of the L blocks. The other end of the L-shaped block is fixedly connected with a box body, and a first gear is fixedly connected to the surface, close to the top end, of the valve rod. Through the design of the rotating mechanism, meshing transmission of the second gear and the first gear is utilized, the diameter of the second gear is larger than that of the first gear, the effect of a labor-saving lever is achieved, an operator only needs to rotate a crank to drive the rotating shaft and the second gear to rotate, the first gear can be easily driven, then the valve rod is driven to rotate, and opening and closing of the valve body are achieved; and compared with direct operation of the valve rod, the force required by operation is greatly reduced, and the convenience of operation is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cast steel high temperature ball valve technical field, concretely is cast steel high temperature ball valve with anti looseness structure. BACKGROUND

[0002] In the industrial production field, cast steel high temperature ball valve as a kind of key fluid control equipment, is widely used in petroleum, chemical industry, power and many high temperature medium conveying process in many occasions. The reliability and stability of ball valve have extremely high requirements.

[0003] According to the announcement number CN 219493378 U a kind of high temperature ball valve, including ball valve body, the outside of ball valve body is fixedly connected with installation pipe, the both ends in installation pipe are provided with clamping mechanism, the outside of installation pipe is provided with connecting pipe, the inside of connecting pipe is provided with sealing mechanism, clamping mechanism includes through slot, clamping block and first spring, the both ends in installation pipe are provided with through slot, the inside of through slot is slidably connected with clamping block, first spring is fixedly connected between the inner wall of clamping block and through slot.

[0004] The device needs to be connected with water pipe in the process of using high temperature ball valve, the sealing property of the existing high temperature ball valve and water pipe connection is poor, and the pipe is not convenient to install and disassemble. But the device is suitable for some large industrial equipment, the diameter of valve rod is larger, and the required operating torque is also increased, when opening or closing valve, the operator often needs to consume more physical strength, which not only increases the labor intensity, but also may cause operation error due to inconvenient operation, affect the normal operation of production process UTILITY MODEL CONTENTS

[0005] The utility model aims at providing cast steel high temperature ball valve with anti looseness structure to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: cast steel high temperature ball valve with anti looseness structure, including valve body and valve rod, the surface of valve body is provided with rotating mechanism, the front surface of rotating mechanism is provided with limiting mechanism;

[0007] The rotating mechanism includes L block, the L block is fixedly connected to the surface of valve body in front and back symmetry, the other end of L block is fixedly connected with box, the surface of valve rod is fixedly connected with first gear near top end, the inner wall of box is rotatably connected with rotating shaft near back surface bottom, the surface of rotating shaft is fixedly connected with second gear near bottom end, the top end of rotating shaft is fixedly connected with crank handle.

[0008] Preferably, the box bottom is provided with hole, and the diameter of hole is greater than the diameter of valve rod, and the valve rod is located in the hole.

[0009] Preferably, a hole matched with the rotating shaft is arranged on the bottom of the inner wall of the box near the back, and the surface of the rotating shaft penetrates and is rotationally connected in the hole.

[0010] Preferably, the first gear is engaged with the second gear, and the diameter of the second gear is greater than that of the first gear, so that the second gear can easily drive the first gear to rotate.

[0011] Preferably, the limiting mechanism comprises a slide rod, the slide rod is symmetrically arranged on the front of the box, a pull plate is fixedly connected to the front end of the slide rod, a fixed plate is fixedly connected to the back of the inner wall of the box, a T-shaped block is fixedly connected to the rear end of the slide rod, an arc-shaped rack is fixedly connected to the rear end of the T-shaped block, a limiting ring is fixedly connected to the surface of the slide rod near the rear end, and a spring is sleeved between the surface of the slide rod and the fixed plate and the limiting ring.

[0012] Preferably, holes matched with the slide rod are arranged on the front of the box and the fixed plate, and the surface of the slide rod penetrates and is slidably connected in the holes.

[0013] Preferably, the arc-shaped rack is engaged with the first gear, the front end of the spring is fixedly connected to the back of the fixed plate, and the rear end of the spring is fixedly connected to the front of the limiting ring.

[0014] Compared with the prior art, the cast steel high-temperature ball valve with the anti-loose structure has the following beneficial effects:

[0015] 1. The cast steel high-temperature ball valve with the anti-loose structure is designed through the rotating mechanism, utilizes the meshing transmission of the second gear and the first gear, and forms the effect of a force-saving lever, so that the operator only needs to rotate the handle to drive the rotating shaft and the second gear to rotate, and then easily drive the first gear to rotate, thereby driving the valve rod to rotate, realizing the opening and closing of the valve body, greatly reducing the force required for operation, and improving the convenience of operation.

[0016] 2. The cast steel high-temperature ball valve with the anti-loose structure is provided with the limiting mechanism, which provides anti-loose protection for the valve body, after the valve rod is rotated in place, the arc-shaped rack is closely engaged with the first gear under the action of the spring, the rotation of the first gear is limited, and then the accidental rotation of the valve rod due to external vibration or other factors is prevented, so that the valve body always maintains the set open or closed state during the working process, and the stability and reliability of the valve body during operation are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced, obviously, the drawings in the following description are only some embodiments of the present application, and for the ordinary skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0018] Figure 1 It is a structural perspective view of the present application;

[0019] Figure 2 It is a structural perspective view of the present application;

[0020] Figure 3 It is a structural perspective view of the present application;

[0021] Figure 4 It is a structural perspective view of the present application.

[0022] In the figure: 1, valve body; 2, valve stem; 3, rotating mechanism; 31, L block; 32, box; 33, first gear; 34, rotating shaft; 35, second gear; 36, crank; 4, limiting mechanism; 41, slide rod; 42, pull plate; 43, fixed plate; 44, T block; 45, arc rack; 46, limiting ring; 47, spring. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0024] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements or the interaction relationship between two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The present application provides the following technical scheme:

[0026] Embodiment one

[0027] Please refer to Figures 1-2The utility model provides a technical scheme: a cast steel high temperature ball valve with anti -loose structure, including valve body 1 and valve rod 2, the surface of valve body 1 is provided with rotating mechanism 3, and rotating mechanism 3 front surface is provided with limiting mechanism 4;

[0028] Rotating mechanism 3 includes L block 31, and L block 31 is fixedly connected to the surface of valve body 1 in front and back symmetry, and the other end of L block 31 is fixedly connected with box 32, and the surface of valve rod 2 is fixedly connected with first gear 33 close to the top end, and the inner wall bottom of box 32 is rotatably connected with rotating shaft 34 close to the back, and the surface of rotating shaft 34 is fixedly connected with second gear 35 close to the bottom end, and the top end of rotating shaft 34 is fixedly connected with crank handle 36.

[0029] The bottom of box 32 is provided with a hole, and the diameter of the hole is greater than the diameter of valve rod 2, and valve rod 2 is located in the hole.

[0030] The inner wall bottom of box 32 is provided with a hole matched with rotating shaft 34 close to the back, and the surface of rotating shaft 34 is rotatably connected in the hole.

[0031] First gear 33 is engaged with second gear 35, and the diameter of second gear 35 is greater than the diameter of first gear 33, so that second gear 35 can easily drive first gear 33 to rotate.

[0032] Embodiment two

[0033] Please refer to Figures 3-4 And on the basis of embodiment one, further get limiting mechanism 4.

[0034] Limiting mechanism 4 includes slide rod 41, and slide rod 41 is symmetrically arranged on the front surface of box 32, and slide rod 41 is fixedly connected with pull plate 42 at the front end, and the inner wall back of box 32 is fixedly connected with fixed plate 43, and the rear end of slide rod 41 is fixedly connected with T-shaped block 44, and the rear end of T-shaped block 44 is fixedly connected with arc rack 45, and the rear end of slide rod 41 is fixedly connected with limiting ring 46, and spring 47 is sleeved between fixed plate 43 and limiting ring 46 on the surface of slide rod 41.

[0035] The front surface of box 32 and fixed plate 43 are provided with holes matched with slide rod 41, and the surface of slide rod 41 is rotatably connected in the hole.

[0036] Arc rack 45 is engaged with first gear 33, and the front end of spring 47 is fixedly connected to the back of fixed plate 43, and the rear end of spring 47 is fixedly connected to the front of limiting ring 46.

[0037] In actual operation, when the device is used, before the valve rod 2 is rotated, the pull plate 42 is pulled forward to move the sliding rod 41 forward, the sliding rod 41 drives the limiting ring 46, the T-shaped block 44 and the arc-shaped rack 45 to move forward, the forward movement of the limiting ring 46 will compress the spring 47, so that the arc-shaped rack 45 will not mesh with the first gear 33, then the handle 36 is rotated to rotate the rotating shaft 34, the rotating shaft 34 drives the second gear 35 to rotate, the second gear 35 can easily drive the valve rod 2 of the first gear 33 to rotate, the opening and closing of the valve body 1 is realized, after the operation is completed, the pull plate 42 is loosened, at this time the arc-shaped rack 45 will be moved backward by the elastic force of the spring 47, so that the arc-shaped rack 45 meshes with the first gear 33, the rotation of the first gear 33 is limited, thereby preventing the valve rod 2 from accidentally rotating due to external vibration or other factors, ensuring that the valve body 1 always maintains the set opening or closing state during the working process, and enhancing the stability and reliability of the valve body 1 during the operation process.

[0038] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or action from another, and do not necessarily require or imply that these entities or actions exist in any actual relationship or order. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

Claims

1. A cast steel high temperature ball valve with anti-loose structure, comprising a valve body (1) and a valve stem (2), characterized in that: The valve body (1) surface is provided with a rotating mechanism (3), the rotating mechanism (3) front is provided with a limiting mechanism (4); The rotating mechanism (3) includes an L block (31), the L block (31) is fixedly connected to the surface of the valve body (1) symmetrically, the other end of the L block (31) is fixedly connected with a box (32), the surface of the valve rod (2) is fixedly connected with a first gear (33) near the top end, the inner wall bottom of the box (32) is rotatably connected with a rotating shaft (34) near the back, the surface of the rotating shaft (34) is fixedly connected with a second gear (35) near the bottom end, the top end of the rotating shaft (34) is fixedly connected with a crank handle (36).

2. The cast steel high temperature ball valve with anti-loosening structure according to claim 1, characterized in that: The box (32) is provided with a hole in the bottom, and the diameter of the hole is greater than the diameter of the valve rod (2), and the valve rod (2) is located in the hole.

3. The cast steel high temperature ball valve with anti-loosening structure according to claim 1, characterized in that: The inner wall bottom of the box (32) is provided with a hole matched with the rotating shaft (34) near the back, and the surface of the rotating shaft (34) penetrates and is rotatably connected in the hole.

4. The cast steel high temperature ball valve with anti-loosening structure according to claim 1, characterized in that: The first gear (33) is engaged with the second gear (35), and the diameter of the second gear (35) is greater than that of the first gear (33).

5. The cast steel high temperature ball valve with anti-loosening structure according to claim 1, characterized in that: The limiting mechanism (4) includes a slide rod (41), the slide rod (41) is symmetrically arranged on the front of the box (32), the slide rod (41) is fixedly connected with a pull plate (42) at the front end, the inner wall back of the box (32) is fixedly connected with a fixed plate (43), the rear end of the slide rod (41) is fixedly connected with a T-shaped block (44), the rear end of the T-shaped block (44) is fixedly connected with an arc-shaped rack (45), the surface of the slide rod (41) is fixedly connected with a limiting ring (46) near the rear end, and the surface of the slide rod (41) is sleeved with a spring (47) between the fixed plate (43) and the limiting ring (46).

6. The cast steel high temperature ball valve with anti-loosening structure according to claim 5, characterized in that: The front of the box (32) and the fixed plate (43) are both provided with a hole matched with the slide rod (41), and the surface of the slide rod (41) penetrates and is slidably connected in the hole.

7. The cast steel high temperature ball valve with anti-loosening structure according to claim 5, characterized in that: The arc-shaped rack (45) is engaged with the first gear (33), the front end of the spring (47) is fixedly connected to the back of the fixed plate (43), and the rear end of the spring (47) is fixedly connected to the front of the limiting ring (46).

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