Worm gear case of worm high-pressure-resistant precise speed regulation valve

Abstract

The utility model relates to the technical field of valve worm gear cases, solves the technical problem that the valve worm gear case cannot be closed quickly, and particularly relates to a worm high-pressure-resistant precise speed regulation valve worm gear case which comprises an adjusting box for providing a supporting foundation for a gear in a device, and an adjusting mechanism capable of precisely adjusting rotation of a valve is arranged on the adjusting box. A valve anti-overflow mechanism for controlling the flow of the worm gear case is arranged at the bottom end of the adjusting box, and the adjusting mechanism comprises a worm rotationally connected to the inner side of the adjusting box. Due to the arrangement of the adjusting mechanism, the rotation amplitude of the valve is reduced, the valve can be opened and closed more accurately, the problem that the closing and opening process of a traditional valve box is slow can be solved through the speed increasing assembly in the adjusting mechanism, and the valve can be rapidly closed in case of emergency.

Description

Technical Field

[0001] The utility model relates to the technical field of valve worm gear boxes, and in particular to a worm gear box for a high-pressure-resistant and precise speed-regulating valve. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems, and have functions such as shutoff, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. The valve worm gear box is a driving device for opening or closing the valve, and is an indispensable and important part of the valve. The performance of the valve worm gear box directly affects, and even determines, the sealing performance, adjustment performance, safety performance and service life of the valve. However, one of the existing valve turbine boxes requires the worm to rotate several times during the adjustment process because of the need for precise adjustment to drive the valve connected to it to rotate slightly, thereby achieving more precise adjustment. However, this situation cannot achieve quick closure when the valve needs to be closed in an emergency. Contents of utility model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a worm gear box with high pressure resistance and precise speed regulation for a worm valve, which solves the technical problem that the valve worm gear box cannot be closed quickly and achieves the purpose of improving the emergency function.

[0004] To solve the above technical problems, the utility model provides the following technical solutions: a worm gear box with high pressure resistance and precise speed regulation valve, comprising a regulating box providing a support base for the gears in the device, the regulating box being provided with a regulating mechanism capable of precisely regulating the rotation of the valve, and the bottom of the regulating box being provided with a valve overflow prevention mechanism for controlling the flow of the worm gear box;

[0005] The regulating mechanism comprises a worm rotatably connected to the inner side of the regulating box, the inner side of the regulating box is rotatably connected with a half-moon tooth meshing with the worm, and a section of the worm outside the regulating box is fixedly connected with a docking tooth;

[0006] The outside of the adjustment box is provided with a speed increasing assembly for quickly rotating the adjustment mechanism, and the speed increasing assembly includes a limit bolt rod fixedly connected to one end of the outside of the adjustment box, the outside of the limit bolt rod is rotatably connected to a support cover through a bracket, one end of the inside of the support cover is rotatably connected to a driving toothed disc, the inside of the support cover is rotatably connected to a speed increasing gear meshing with the driving toothed disc, one end of the speed increasing gear is fixedly connected to a transmission gear, and the transmission gear meshes with the docking teeth.

[0007] Preferably, the valve anti-overflow mechanism includes a buffer box fixedly connected to the bottom end of the adjustment box. An intermittent cavity in the shape of a circle is provided inside the buffer box. A communication cavity is provided inside the buffer box at the top of the intermittent cavity. Both ends of the outside of the buffer box are connected with lead-out pipes communicating with the communication cavity, and a flow-limiting valve is connected in the middle of the lead-out pipes.

[0008] Preferably, the top end of the semi-circular tooth extends out of the top end of the outside of the adjustment box and is fixedly connected with a flow pointer.

[0009] Preferably, two limiting rods for providing rotational limit for the semi-circular tooth are fixedly connected inside the adjustment box.

[0010] Preferably, a valve is rotatably connected inside the intermittent cavity. The top end of the valve penetrates through the buffer box and is fixedly connected with the bottom end of the semi-circular tooth.

[0011] Preferably, both ends of the outside of the buffer box are connected with transmission pipes, and both of the two transmission pipes communicate with the communication cavity.

[0012] By means of the above technical solution, the present utility model provides a worm high-pressure resistant precision speed regulation valve worm gear box, which at least has the following beneficial effects:

[0013] 1. Due to the setting of the adjustment mechanism in the present utility model, the rotation amplitude of the valve becomes smaller, which can make the opening and closing of the valve more precise. Through the speed increasing component in the adjustment mechanism, the problem that the closing and opening process of the traditional valve box is slow can be solved, and the valve can be quickly closed in case of an emergency.

[0014] 2. Due to the setting of the valve anti-overflow mechanism in the present utility model, it can prevent the transported oily substance from overflowing to the valve connection gap, so that the rotation of the adjustment mechanism becomes more laborious after cooling. It can temporarily store a small amount of transported liquid overflowing through the intermittent cavity and then discharge it through the lead-out pipe, and can prevent the oily substance from overflowing to the gap between the gears, thus making the rotation between the gears difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application.

[0016] In the drawings:

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a schematic diagram of the installation structure of the support cover of the present utility model;

[0019] Figure 3Schematic diagram of the installation structure of the semi-circular teeth of the present utility model;

[0020] Figure 4 Schematic diagram of the installation structure of the valve of the present utility model.

[0021] In the figure: 1, adjustment box;

[0022] 2, adjustment mechanism; 201, worm; 202, semi-circular teeth; 203, limit rod; 204, flow pointer; 205, docking teeth; 206, speed increasing assembly; 2061, limit bolt rod; 2062, support cover; 2063, driving gear disc; 2064, speed increasing gear; 2065, conduction gear;

[0023] 3, valve anti-overflow mechanism; 301, buffer box; 302, intermittent cavity; 303, communication cavity; 304, valve; 305, outlet pipe; 306, flow limiting valve; 307, transmission pipe. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] However, for one of the existing valve turbine boxes, during the adjustment process, because precise adjustment is required, the worm needs to rotate several circles to drive the connected valve to rotate slightly, thereby achieving more precise adjustment. However, in case of an emergency when the valve needs to be closed quickly, it cannot be closed quickly. Please refer to Figures 1-4 , this embodiment provides a worm high-pressure resistance precise speed regulation valve worm gear box, which solves the technical problem that the valve worm gear box cannot be quickly closed. The device includes an adjustment box 1 that provides a support basis for the gears in the device. An adjustment mechanism 2 for precisely adjusting the rotation of the valve is provided on the adjustment box 1. A valve anti-overflow mechanism 3 for controlling the flow of the worm gear box is provided at the bottom end of the adjustment box 1. In order to achieve precise adjustment of the flow rate of the transported substance. The adjustment mechanism 2 includes a worm 201 rotatably connected to the inside of the adjustment box 1, and a semi-circular tooth 202 rotatably connected to the inside of the adjustment box 1 and meshing with the worm 201. A docking tooth 205 is fixedly connected to a section of the worm 201 outside the adjustment box 1.

[0027] The worm 201 drives the semi-circular tooth 202 to rotate, and the semi-circular tooth 202 drives the connected valve anti-overflow mechanism 3 to operate, thereby achieving the adjustment of the flow rate.

[0028] In order to observe the change in transmission flow through the change in the direction of the flow pointer 204. At the top of the semi-circular tooth 202, a flow pointer 204 is fixedly connected to the outer top end of the adjustment box 1.

[0029] In order to prevent the semi-circular tooth 202 from rotating out of the meshing range of the worm 201. Two limiting rods 203 for providing rotational limitation for the semi-circular tooth 202 are fixedly connected to the inner side of the adjustment box 1.

[0030] In order to accelerate the rotational speed of the adjustment mechanism 2. An acceleration assembly 206 for quickly rotating the adjustment mechanism 2 is arranged on the outer side of the adjustment box 1. The acceleration assembly 206 includes a limiting bolt rod 2061 fixedly connected to one end of the outer side of the adjustment box 1. A support cover 2062 is rotatably connected to the outer side of the limiting bolt rod 2061 through a bracket. One end of the inner side of the support cover 2062 is rotatably connected to a driving gear disk 2063. A speed increasing gear 2064 meshing with the driving gear disk 2063 is rotatably connected to the inner side of the support cover 2062. One end of the speed increasing gear 2064 is fixedly connected to a conduction gear 2065. The conduction gear 2065 meshes with the docking tooth 205. The limiting bolt rod 2061 can limit the position of the support cover 2062 rotatably connected to its outer side through a bracket, and can separate the two when the conduction gear 2065 and the docking tooth 205 rotate.

[0031] By loosening the limiting bolt rod 2061 and rotating the support cover 2062 until the conduction gear 2065 on the inner side of the support cover 2062 meshes with the docking tooth 205, and then tightening the limiting bolt rod 2061 again. Subsequently, the operator rotates the driving gear disk 2063 through the handle. At this time, the driving gear disk 2063 will drive the speed increasing gear 2064 with a diameter smaller than itself and meshing with it to rotate quickly. The speed increasing gear 2064 will drive the conduction gear 2065 fixedly connected to it to rotate quickly. The conduction gear 2065 will drive the docking tooth 205 meshing with it to rotate. The docking tooth 205 will drive the worm 201 connected to it to rotate, so as to increase the rotational speed of the worm 201, thereby achieving the effect of quickly closing the valve anti-overflow mechanism 3.

[0032] Embodiment 2

[0033] On the basis of Embodiment 1, Embodiment 1 solves the technical problem that the valve worm gear box cannot be quickly closed, but there is still a problem that the transmitted oily substance will overflow. Combining Figures 1-4As shown in the figure, the specific implementation process is as follows: In order to connect the external transmission pipeline and control the flow rate of the transmission pipeline. The valve anti-overflow mechanism 3 includes a buffer tank 301 fixedly connected to the bottom end of the adjustment box 1. An intermittent cavity 302 in the shape of a circle is provided inside the buffer tank 301. A communication cavity 303 is provided inside the buffer tank 301 at the top of the intermittent cavity 302. Both ends of the outside of the buffer tank 301 are connected with a lead-out pipe 305 communicating with the communication cavity 303. A flow-limiting valve 306 is connected in the middle of the lead-out pipe 305.

[0034] In order to make the semi-circular tooth 202 drive the valve 304 to rotate. The valve 304 is rotatably connected inside the intermittent cavity 302. The top end of the valve 304 penetrates through the buffer tank 301 and is fixedly connected to the bottom end of the semi-circular tooth 202.

[0035] In order to discharge the oily substance inside the intermittent cavity 302. Both ends of the outside of the buffer tank 301 are connected with a transmission pipe 307. Both of the two transmission pipes 307 communicate with the communication cavity 303.

[0036] First, connect the two transmission pipes 307 to the external transmission pipelines respectively. Drive the valve 304 to rotate through the semi-circular tooth 202 to control the flow rate of the transmitted substance. During the process, the transmitted substance will overflow outward through the connection between the semi-circular tooth 202 and the valve 304 and the buffer tank 301. The overflowed substance will enter the intermittent cavity 302 and finally flow to the outside through the lead-out pipe 305, which can prevent the transmitted substance from entering the adjustment box 1 and adhering to the meshing part of the worm 201 and the semi-circular tooth 202. Over time, the rotation of the worm 201 and the semi-circular tooth 202 will become laborious.

[0037] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A worm gear box for a high-pressure-resistant and precise speed-regulating valve, comprising a regulating box (1) for providing a support base for the gears in the device, characterized in that: The regulating box (1) is provided with a regulating mechanism (2) capable of accurately regulating the rotation of the valve, and the bottom end of the regulating box (1) is provided with a valve overflow prevention mechanism (3) for controlling the flow of the worm gear box; The regulating mechanism (2) comprises a worm (201) rotatably connected to the inner side of the regulating box (1); the inner side of the regulating box (1) is rotatably connected to a half-moon tooth (202) meshing with the worm (201); and a section of the worm (201) located outside the regulating box (1) is fixedly connected to a butt tooth (205); The outside of the regulating box (1) is provided with a speed increasing assembly (206) for quickly rotating the regulating mechanism (2), the speed increasing assembly (206) comprising a limit bolt rod (2061) fixedly connected to one end of the outside of the regulating box (1), the outside of the limit bolt rod (2061) being rotatably connected to a support cover (2062) via a bracket, one end of the inside of the support cover (2062) being rotatably connected to a driving toothed disc (2063), the inside of the support cover (2062) being rotatably connected to a speed increasing gear (2064) meshing with the driving toothed disc (2063), one end of the speed increasing gear (2064) being fixedly connected to a transmission gear (2065), the transmission gear (2065) being meshed with the docking gear (205).

2. A worm gearbox with high pressure resistance and precise speed regulation valve according to claim 1, characterized in that: The valve overflow prevention mechanism (3) comprises a buffer box (301) fixedly connected to the bottom end of the regulating box (1); a circular intermittent cavity (302) is provided inside the buffer box (301); a connecting cavity (303) is provided at the top of the intermittent cavity (302) inside the buffer box (301); both ends of the outer side of the buffer box (301) are connected to outlet pipes (305) connected to the connecting cavity (303); and a flow limiting valve (306) is connected in the middle of the outlet pipe (305).

3. The worm gear box for a worm high pressure-resistant and precise speed-regulating valve according to claim 1, characterized in that: The top end of the half-moon tooth (202) extends out of the outer side of the regulating box (1), and a flow pointer (204) is fixedly connected to the top end.

4. The worm gear box for a worm high pressure-resistant and precise speed-regulating valve according to claim 1, characterized in that: Two limiting rods (203) for providing rotation limiting for the half-moon teeth (202) are fixedly connected to the inner side of the regulating box (1).

5. The worm gear box for a worm high pressure-resistant and precise speed-regulating valve according to claim 2, characterized in that: A valve (304) is rotatably connected to the inner side of the intermittent chamber (302), and the top end of the valve (304) penetrates the buffer box (301) and is fixedly connected to the bottom end of the half-moon tooth (202).

6. A worm gearbox with high pressure resistance and precise speed regulation valve according to claim 2, characterized in that: Both ends of the outer side of the buffer box (301) are connected to transmission pipes (307), and the two transmission pipes (307) are both connected to the communication chamber (303).

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