Heat preservation ball valve with auxiliary limiting structure

Abstract

The utility model discloses a heat preservation ball valve with an auxiliary limiting structure, and relates to the technical field of heat preservation ball valves, the heat preservation ball valve comprises a ball valve main body, a heat preservation mechanism and a sealing ring, the ball valve main body comprises a valve body, a ball body, a valve rod and an operating handle, the ball body is arranged in the valve body, one end of the ball body is provided with the valve rod extending to the outer side of the valve body, and the other end of the ball body is provided with an auxiliary limiting structure. The top end of the outer side of the valve rod is sleeved with an operation handle, and an auxiliary limiting mechanism is arranged at the position, located on the outer side of the valve rod, of the top end of the valve body. The auxiliary limiting mechanism is arranged, and the annular plate is elastically connected with the supporting plate through the reset spring, so that when the pressing plate is loosened, the annular plate can reset under the action of the reset spring, the limiting plate is clamped into the limiting groove, auxiliary limiting of the valve rod is achieved, and the valve rod is prevented from loosening and rotating; and the stability of the valve rod in the using process is improved, so that the influence on normal control and sealing of the valve is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation ball valves, in particular to a thermal insulation ball valve with an auxiliary limiting structure. Background Art

[0002] Insulated ball valves are widely used in many industries, such as petroleum, chemical industry, electric power, metallurgy, pharmaceuticals and food. They are a kind of valve that uses a ball with a circular through hole as the opening and closing part. The ball rotates with the valve stem to realize the opening and closing action. It is mainly used to cut off or connect the medium in the pipeline, and can also be used for fluid regulation and control. At the same time, it can also close any channel and connect the other two channels.

[0003] At present, the existing insulated ball valve is mainly composed of a valve body, a ball, a valve stem, an operating handle and other components, and a jacket with an inlet and outlet for heat-insulating heating fluid is welded on the outer wall of the valve body, which is used to circulate heat-insulating media such as steam or hot oil to ensure that viscous media can flow through the valve smoothly and the valve can be opened and closed normally. When the insulated ball valve is in use, the rotation of the operating handle will drive the valve stem and the ball to rotate, thereby adjusting the opening degree of the valve and controlling the flow rate and pressure of the fluid. However, during the long-term use of the insulated ball valve, the packing between the valve body and the valve stem will wear, which is easy to affect the stability of the valve stem and the sealing of the valve. In addition, a large impact force will be generated on the ball during the flow of the fluid. The impact force acts on the ball itself and is easily transmitted to the valve stem and the operating handle through the ball. If this continues for a long time, the valve stem will easily loosen, which will easily cause the handle, valve stem and ball to rotate, thereby affecting the normal control of the valve. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a thermal insulation ball valve with an auxiliary limiting structure to solve the technical problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat-insulating ball valve with an auxiliary limiting structure, comprising a ball valve body, a heat-insulating mechanism and a sealing ring, and the ball valve body comprises a valve body, a ball, a valve stem and an operating handle, the valve stem is provided with a release mechanism extending to the outside, the release mechanism comprises a vertical plate provided on one side of the top end of the valve stem, the inner side of the vertical plate is rotatably connected with a pressing plate through a support shaft, a connecting plate penetrating the valve stem is provided below the vertical plate, and a linkage plate is rotatably connected between the pressing plate and the connecting plate through a hinge seat;

[0006] An auxiliary limiting mechanism is also provided at the top end of the valve body, which is located on the outside of the valve stem. The auxiliary limiting mechanism includes a limiting groove opened at one end of the valve body close to the operating handle, and a limiting plate is provided inside the limiting groove. An annular plate arranged around the valve stem is provided at the upper end of the limiting plate, and the annular plate is fixedly connected to the connecting plate. Support plates are provided on both sides of the valve stem, and a reset spring is welded between the annular plate and the support plate.

[0007] Furthermore, a guide hole is opened inside the support plate, and a guide rod penetrating the reset spring and the guide hole is welded to one end of the annular plate.

[0008] Furthermore, the limiting groove is a tooth groove structure, the limiting plate is a toothed disc structure, the annular plate and the valve body form a clamping structure through the limiting groove and the limiting plate, and a sealing ring is provided at one end of the annular plate close to the valve body.

[0009] Furthermore, the heat-insulating mechanism is sleeved on the outside of the valve body, and the heat-insulating mechanism consists of a jacket (201), an input port and an output port.

[0010] Furthermore, the jacket is arranged on the outer surface of the valve body, a sphere is arranged at the front end of the jacket, and a valve stem is arranged at the rear end of the jacket.

[0011] In summary, the utility model mainly has the following beneficial effects:

[0012] 1. The existing insulated ball valve is prone to loosening of the valve stem due to the wear of the packing and the impact of the fluid flow during long-term use, which easily affects the normal control of the valve. The utility model is provided with an auxiliary limiting mechanism. Since the annular plate and the support plate are elastically connected by a reset spring, when the pressing plate is released, the annular plate will be reset under the action of the reset spring, and the limit plate will be stuck in the limit groove, thereby realizing auxiliary limiting of the valve stem to prevent it from loosening and self-rotation, increasing the stability of the valve stem during use, thereby preventing the normal control and sealing of the valve from being affected;

[0013] 2. The utility model is provided with a releasing mechanism. Since the pressing plate and the vertical plate are rotatably connected through the support shaft, and the linkage plate, the pressing plate and the connecting plate are rotatably connected through the hinge seat, the pressing plate can be pressed downward to make it deflect around the support shaft, so that the connecting plate and the limit plate can be driven to move up through the linkage plate, and the limit plate can be separated from the limit groove, thereby realizing the releasing operation of the valve stem, so that the rotation of the valve stem is not affected and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 2 It is a partial front view cutaway diagram of the utility model;

[0016] Figure 3 It is a bottom cutaway view of the utility model;

[0017] Figure 4 It is a top view cutaway diagram of the utility model;

[0018] Figure 5 It is the front view of the utility model.

[0019] In the figure: 1. ball valve body; 101. valve body; 102. ball; 103. valve stem; 104. operating handle; 2. insulation mechanism; 201. jacket; 202. input port; 203. output port; 3. auxiliary limit mechanism; 301. limit groove; 302. limit plate; 303. annular plate; 304. reset spring; 305. support plate; 4. release mechanism; 401. vertical plate; 402. pressing plate; 403. linkage plate; 404. connecting plate; 405. support shaft; 5. sealing ring; 6. guide rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0021] The following describes an embodiment of the utility model based on its overall structure.

[0022] A heat-insulating ball valve with an auxiliary limiting structure, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes a ball valve body 1, an insulation mechanism 2 and a sealing ring 5, and the ball valve body 1 includes a valve body 101, a ball 102, a valve stem 103 and an operating handle 104. The ball 102 is arranged inside the valve body 101, and one end of the ball 102 is provided with a valve stem 103 extending to the outside of the valve body 101, and the top end of the outside of the valve stem 103 is sleeved with an operating handle 104. By rotating the operating handle 104, the valve stem 103 and the ball 102 are rotated, thereby realizing the opening and closing of the valve and the control of the flow rate, so as to realize the cutoff or connection of the fluid.

[0023] See also Figure 1 , Figure 2 , Figure 4 and Figure 5It can be seen that the valve stem 103 is provided with a release mechanism 4 extending to the outside inside, and the release mechanism 4 is composed of a vertical plate 401, a pressing plate 402, a linkage plate 403, a connecting plate 404 and a support shaft 405. A vertical plate 401 is provided on one side of the top of the valve stem 103, and the upper end of the vertical plate 401 is rotatably connected to the pressing plate 402 through the support shaft 405. A connecting plate 404 that penetrates the valve stem 103 is provided below the vertical plate 401, and the linkage plate 403 is rotatably connected between the pressing plate 402 and the connecting plate 404 through a hinge seat; see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 It can be seen that the top of the valve body 101 is provided with an auxiliary limiting mechanism 3 on the outside of the valve stem 103, and the auxiliary limiting mechanism 3 includes a limiting groove 301 and a reset spring 304. The valve body 101 is provided with a limiting groove 301 at one end close to the operating handle 104, and a limiting plate 302 is provided inside the limiting groove 301. The upper end of the limiting plate 302 is provided with an annular plate 303 arranged around the valve stem 103, and the annular plate 303 is fixedly connected to the connecting plate 404. Support plates 305 are provided on both sides of the valve stem 103, and a reset spring 304 is welded between the annular plate 303 and the support plate 305. The limiting groove 301 is a tooth groove structure, and the limiting plate 302 is a toothed disc structure. The annular plate 303 and the valve body 101 form a clamping structure through the limiting groove 301 and the limiting plate 302.

[0024] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 It can be seen that since the pressing plate 402 and the vertical plate 401 are rotatably connected through the support shaft 405, and the linkage plate 403, the pressing plate 402 and the connecting plate 404 are rotatably connected through the hinge seat, the pressing plate 402 can be pressed downward to make it deflect around the support shaft 405, so that the connecting plate 404 and the limit plate 302 can be driven upward through the linkage plate 403, and the limit plate 302 can be disengaged from the limit groove 301, thereby realizing the release operation of the valve stem 103, so that the rotation of the valve stem 103 is not affected, and the operation is convenient.

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5It can be seen that since the annular plate 303 and the support plate 305 are elastically connected by the reset spring 304, when the pressing plate 402 is released, the annular plate 303 will be reset under the action of the reset spring 304, and the limiting plate 302 will be stuck in the limiting groove 301, thereby realizing auxiliary limiting of the valve stem 103 to prevent it from loosening and rotating, thereby increasing the stability of the valve stem 103 during use, thereby preventing the normal control and sealing of the valve from being affected, and the wear of the packing can be greatly reduced, thereby extending the service life of the packing.

[0026] See also Figure 1 , Figure 2 and Figure 3 It can be seen that a sealing ring 5 is provided at one end of the annular plate 303 close to the valve body 101 , which can play a sealing role and improve the sealing effect between the valve stem 103 and the valve body 101 .

[0027] See also Figure 1 , Figure 4 and Figure 5 It can be seen that the heat preservation mechanism 2 is sleeved on the outside of the valve body 101, and the heat preservation mechanism 2 is composed of a jacket 201, an input port 202 and an output port 203. The jacket 201 is sleeved on the outer surface of the valve body 101, the front end of the jacket 201 is provided with a ball 102, and the rear end of the jacket 201 is provided with a valve stem 103;

[0028] See also Figure 1 , Figure 4 and Figure 5 It can be seen that the thermal insulation heating fluid flows into the jacket 201 from the input port 202 and flows out of the jacket 201 from the output port 203 to realize the circulation of the thermal insulation heating fluid in the jacket 201, and the thermal insulation heating fluid is a thermal insulation medium such as steam or hot oil, so that it can be ensured that the viscous medium can flow smoothly through the valve, ensuring that the valve can be opened and closed normally.

[0029] See also Figure 1 and Figure 2 It can be seen that a guide hole is opened inside the support plate 305, and one end of the annular plate 303 is welded with a guide rod 6 that passes through the reset spring 304 and the guide hole, which can play a supporting and limiting role, thereby increasing the stability of the annular plate 303 during sliding, and preventing the reset spring 304 from tilting.

[0030] The working principle of the utility model is as follows: when using the thermal insulation ball valve with an auxiliary limiting structure, the pressing plate 402 can be pressed downward to make it deflect with the support shaft 405 as the axis, so that the connecting plate 404 and the limiting plate 302 can be driven to move up through the linkage plate 403, and the limiting plate 302 can be disengaged from the limiting groove 301, thereby realizing the release operation of the valve stem 103. At this time, the valve stem 103 and the ball 102 can be rotated by rotating the operating handle 104, thereby realizing the opening and closing of the valve and the control of the flow rate, so as to realize the cutoff or connection of the fluid. After the control is completed, the pressing plate 402 is released, so that the annular plate 303 will be reset under the action of the reset spring 304, and the limiting plate 302 is stuck in the limiting groove 301, thereby realizing the auxiliary limiting of the valve stem 103. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0031] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A heat-insulating ball valve with an auxiliary limit structure, comprising a ball valve body (1), a heat-insulating mechanism (2) and a sealing ring (5), wherein the ball valve body (1) comprises a valve body (101), a ball (102), a valve stem (103) and an operating handle (104), characterized in that: The valve stem (103) is provided with a release mechanism (4) extending to the outside, the release mechanism (4) comprising a vertical plate (401) provided on one side of the top end of the valve stem (103), the inner side of the vertical plate (401) is rotatably connected to a pressing plate (402) via a support shaft (405), a connecting plate (404) penetrating the valve stem (103) is provided below the vertical plate (401), and a linkage plate (403) is rotatably connected between the pressing plate (402) and the connecting plate (404) via a hinge seat; An auxiliary limiting mechanism (3) is also provided at the top end of the valve body (101) and located on the outside of the valve stem (103). The auxiliary limiting mechanism (3) comprises a limiting groove (301) provided at one end of the valve body (101) close to the operating handle (104). A limiting plate (302) is provided inside the limiting groove (301). An annular plate (303) arranged around the valve stem (103) is provided at the upper end of the limiting plate (302). The annular plate (303) is fixedly connected to a connecting plate (404). Support plates (305) are provided on both sides of the valve stem (103). A reset spring (304) is welded between the annular plate (303) and the support plate (305).

2. The heat-insulating ball valve with an auxiliary limiting structure according to claim 1, characterized in that: A guide hole is provided inside the support plate (305), and a guide rod (6) penetrating the return spring (304) and the guide hole is welded to one end of the annular plate (303).

3. The heat-insulating ball valve with an auxiliary limiting structure according to claim 1, characterized in that: The limiting groove (301) is a tooth groove structure, the limiting plate (302) is a toothed disc structure, the annular plate (303) and the valve body (101) form a snap-fit ​​structure via the limiting groove (301) and the limiting plate (302), and a sealing ring (5) is provided at one end of the annular plate (303) close to the valve body (101).

4. The heat-insulating ball valve with an auxiliary limiting structure according to claim 1, characterized in that: The heat preservation mechanism (2) is sleeved on the outside of the valve body (101), and the heat preservation mechanism (2) is composed of a jacket (201), an input port (202) and an output port (203).

5. The heat-insulating ball valve with an auxiliary limiting structure according to claim 4, characterized in that: The jacket (201) is sleeved on the outer surface of the valve body (101), a sphere (102) is arranged at the front end of the jacket (201), and a valve stem (103) is arranged at the rear end of the jacket (201).

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