Control valve device for methane purification

Abstract

The utility model relates to the technical field of methane purification, and discloses a control valve device for methane purification, which solves the problem that a gas inlet cannot be automatically blocked when methane leaks at present, and comprises a valve body, a gas outlet pipe is arranged on the valve body, a gas inlet pipe is arranged on one side, far away from the gas outlet pipe, of the valve body, and a blocking mechanism is arranged on the valve body. The plugging mechanism comprises a U-shaped round rod fixed to the outer side of the valve body, the outer side of the U-shaped round rod is movably sleeved with an L-shaped plate, a toothed plate is fixedly connected to the L-shaped plate, a valve rod is arranged on the valve body, an outer gear matched with the toothed plate is fixedly installed on the outer side of the valve rod, an installation box is fixedly connected to the side, away from the air outlet pipe, of the valve body, and the air inlet pipe is arranged on the installation box. The end, away from the valve body, of the U-shaped round rod is fixed to the top of the mounting box. According to the utility model, the automatic rotation of the valve rod is conveniently realized, so that the control valve can be automatically closed by the rotation of the valve core, and the methane can be automatically blocked when the methane leaks.

Description

Technical Field

[0001] This utility model belongs to the field of methane purification technology, specifically a control valve device for methane purification. Background Technology

[0002] The working principle of the methane purification control valve device is mainly based on the opening and closing of the valve. The gas flow rate is controlled by adjusting the valve opening. When the control system detects that parameters such as methane concentration, pressure or temperature need to be adjusted, it will send a signal to drive the control valve to perform the corresponding action to achieve the expected purification effect.

[0003] The existing methane purification control valve is just a switch and cannot detect methane leakage in real time. If methane leakage occurs, it cannot automatically seal the methane inlet, thus making it difficult to guarantee the safety of the users. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a control valve device for methane purification, which effectively solves the problem that the inlet cannot be automatically blocked when methane leaks.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a control valve device for methane purification, comprising a valve body, an outlet pipe on the valve body, an inlet pipe on the side of the valve body away from the outlet pipe, and a sealing mechanism on the valve body.

[0006] The sealing mechanism includes a U-shaped rod fixed to the outside of the valve body, an L-shaped plate movably sleeved on the outside of the U-shaped rod, a toothed plate fixedly connected to the L-shaped plate, a valve stem on the valve body, an external gear adapted to the toothed plate fixedly installed on the outside of the valve stem, a mounting box fixedly connected to the side of the valve body away from the outlet pipe, an inlet pipe set on the mounting box, the end of the U-shaped rod away from the valve body fixed to the top of the mounting box, a screw rotatably connected inside the mounting box, a driven shaft fixedly connected to the top of the screw, the top of the driven shaft extending to the outside of the mounting box and fixedly connected to a top plate, a drive rod rotatably connected to the top of the top plate, and the end of the drive rod away from the top plate rotatably connected to the top of the L-shaped plate.

[0007] Preferably, the top of the mounting box is provided with a sealed bearing, which is sleeved on the outside of the driven shaft.

[0008] Preferably, a support base is fixedly installed on the top of the mounting box, a driven shaft passes through the support base and is rotatably connected to the support base, a drive shaft is rotatably connected to the inner top wall of the support base, a drive motor is fixedly connected to the end of the drive shaft away from the support base, the drive motor is fixed to the top of the mounting box, a drive gear is fixedly installed on the outer side of the drive shaft, a driven gear is fixedly installed on the outer side of the driven shaft, and the driven gear is meshed with the drive gear.

[0009] Preferably, the mounting box is provided with a through hole, the mounting box is connected to the valve body through the through hole, and a sealing ring is fixedly connected inside the mounting box at the through hole.

[0010] Preferably, two slide rods are symmetrically fixedly connected inside the mounting box, and a sliding plate is movably sleeved between the two slide rods. A sealing plate is fixedly connected to the side of the sliding plate near the sealing ring. The sealing plate and the sealing ring are at the same height, and the outer diameter of the sealing plate is equal to the outer diameter of the sealing ring.

[0011] Preferably, two guide rods are symmetrically fixedly connected inside the mounting box, and a lifting plate is movably sleeved between the two guide rods. The lifting plate is threaded onto the outside of the screw rod, and a movable rod is rotatably connected to the outside of the lifting plate. The end of the movable rod away from the lifting plate is rotatably connected to the side of the slide plate away from the sealing disc.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The top plate can be rotated by the cooperation between the drive motor, drive shaft, drive gear, driven gear, driven shaft and screw. The valve stem can be automatically rotated by the cooperation between the drive rod, L-shaped plate, U-shaped round rod, toothed plate and external gear. The valve core can be rotated to automatically close the control valve, so that the methane can be automatically blocked when methane leaks.

[0014] 2. Through the cooperation between the drive motor, drive shaft, drive gear, driven gear, driven shaft and screw, the lifting plate can slide upward along the two guide rods. Through the cooperation between the movable rod, the sliding plate and the sliding rod, the sealing disc can move and abut against the sealing ring, thereby facilitating the sealing of methane and preventing leakage. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the control valve device for methane purification according to this utility model;

[0018] Figure 2 This is a schematic diagram of the sealing mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the top plate structure of this utility model;

[0020] Figure 4 This is a cross-sectional view of the mounting box of this utility model;

[0021] Figure 5 This is a schematic diagram of the skateboard structure of this utility model.

[0022] In the diagram: 1. Valve body; 2. Sealing mechanism; 201. U-shaped rod; 202. Toothed plate; 203. Mounting box; 204. Top plate; 205. Drive rod; 206. L-shaped plate; 207. External gear; 208. Valve stem; 209. Lifting plate; 2010. Support base; 2011. Driven gear; 2012. Driven shaft; 2013. Sealed bearing; 2014. Drive motor; 2015. Drive gear; 2016. Drive shaft; 2017. Slide plate; 2018. Sealing ring; 2019. Screw; 2020. Guide rod; 2021. Sealing disc; 2022. Slide rod; 2023. Movable rod; 3. Air outlet pipe; 4. Air inlet pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Example 1, by Figure 1 The present invention relates to a control valve device for methane purification, comprising a valve body 1, an outlet pipe 3 on the valve body 1, an inlet pipe 4 on the side of the valve body 1 away from the outlet pipe 3, and a sealing mechanism 2 on the valve body 1.

[0025] Specifically, by Figure 2-4The sealing mechanism 2 includes a U-shaped rod 201 fixed to the outside of the valve body 1. An L-shaped plate 206 is movably sleeved on the outside of the U-shaped rod 201. A toothed plate 202 is fixedly connected to the L-shaped plate 206. A valve stem 208 is provided on the valve body 1. A valve core is movably installed inside the valve body 1. The bottom end of the valve stem 208 is fixedly connected to the valve core. A handwheel is fixedly connected to the top end of the valve stem 208. When the handwheel is rotated, the valve core is rotated through the valve stem 208, which can realize the opening and closing of the entire control valve. A toothed plate is fixedly installed on the outside of the valve stem 208. An external gear 207 is adapted to the valve body 1. A mounting box 203 is fixedly connected to the side of the valve body 1 away from the outlet pipe 3. An inlet pipe 4 is installed on the mounting box 203. The end of the U-shaped rod 201 away from the valve body 1 is fixed to the top of the mounting box 203. A screw 2019 is rotatably connected inside the mounting box 203. A driven shaft 2012 is fixedly connected to the top of the screw 2019. The top of the driven shaft 2012 extends to the outside of the mounting box 203 and is fixedly connected to a top plate 204. A drive rod 20 is rotatably connected to the top of the top plate 204. 5. The end of the drive rod 205 furthest from the top plate 204 is rotatably connected to the top of the L-shaped plate 206. A sealed bearing 2013 is provided on the top of the mounting box 203, and the sealed bearing 2013 is sleeved on the outside of the driven shaft 2012. The sealing bearing 2013 ensures the sealing of the mounting box 203. A support base 2010 is fixedly installed on the top of the mounting box 203. The driven shaft 2012 passes through the support base 2010 and is rotatably connected to it. A drive shaft 2012 is rotatably connected to the inner top wall of the support base 2010. 16. A drive motor 2014 is fixedly connected to one end of the drive shaft 2016 away from the support base 2010. The drive motor 2014 is fixed to the top of the mounting box 203. A drive gear 2015 is fixedly installed on the outside of the drive shaft 2016. A driven gear 2011 is fixedly installed on the outside of the driven shaft 2012. The driven gear 2011 is meshed with the drive gear 2015. A methane sensor and a controller are provided on the outside of the valve body 1. The methane sensor is electrically connected to the controller. The controller is electrically connected to the drive motor 2014.

[0026] In operation, when the methane sensor detects a methane leak, it transmits an electrical signal to the controller. The controller then starts the drive motor 2014, causing the drive shaft 2016 to rotate. Since the drive gear 2015 meshes with the driven gear 2011, it drives the driven shaft 2012 and the screw 2019 to rotate, which in turn drives the top plate 204 to rotate. Then, the drive rod 205 drives the L-shaped plate 206 to slide along the U-shaped rod 201, causing the toothed plate 202 to mesh with the external gear 207 and continue to move, thereby realizing the automatic rotation of the valve stem 208. Finally, the valve core rotates to automatically close the control valve, automatically sealing off the methane leak when it occurs.

[0027] Specifically, by Figure 4-5As shown, the mounting box 203 has a through hole, which connects the mounting box 203 to the valve body 1. A sealing ring 2018 is fixedly connected inside the mounting box 203 at the through hole. Two slide rods 2022 are symmetrically fixedly connected inside the mounting box 203. A sliding plate 2017 is movably sleeved between the two slide rods 2022. A sealing disc 2021 is fixedly connected to the side of the sliding plate 2017 near the sealing ring 2018. The sealing disc 2021 and the sealing ring 2018 are at the same height. Furthermore, the outer diameter of the sealing disc 2021 is equal to the outer diameter of the sealing ring 2018. Two guide rods 2020 are symmetrically fixedly connected inside the mounting box 203. A lifting plate 209 is movably sleeved between the two guide rods 2020. The lifting plate 209 is threaded onto the outside of the screw 2019. A movable rod 2023 is rotatably connected to the outside of the lifting plate 209. The end of the movable rod 2023 away from the lifting plate 209 is rotatably connected to the side of the sliding plate 2017 away from the sealing disc 2021.

[0028] In operation, when the drive motor 2014 starts and drives the screw 2019 to rotate, it causes the lifting plate 209 to slide upward along the two guide rods 2020. Then, the movable rod 2023 drives the slide plate 2017 to slide along the two slide rods 2022. At the same time, the sealing plate 2021 moves horizontally until it comes into contact with the sealing ring 2018, and finally the methane is sealed to prevent leakage.

Claims

1. A control valve device for methane purification, comprising a valve body (1), an outlet pipe (3) provided on the valve body (1), and an inlet pipe (4) provided on the side of the valve body (1) away from the outlet pipe (3), characterized in that: The valve body (1) is provided with a sealing mechanism (2); The sealing mechanism (2) includes a U-shaped round rod (201) fixed to the outside of the valve body (1), an L-shaped plate (206) movably sleeved on the outside of the U-shaped round rod (201), a toothed plate (202) fixedly connected on the L-shaped plate (206), a valve stem (208) provided on the valve body (1), an external gear (207) adapted to the toothed plate (202) fixedly installed on the outside of the valve stem (208), a mounting box (203) fixedly connected to the side of the valve body (1) away from the air outlet pipe (3), and an air inlet pipe (4) set on the mounting box (203). The end of the rod (201) away from the valve body (1) is fixed to the top of the mounting box (203). The mounting box (203) is rotatably connected to a screw (2019). The top of the screw (2019) is fixedly connected to a driven shaft (2012). The top of the driven shaft (2012) extends to the outside of the mounting box (203) and is fixedly connected to a top plate (204). The top of the top plate (204) is rotatably connected to a drive rod (205). The end of the drive rod (205) away from the top plate (204) is rotatably connected to the top of the L-shaped plate (206).

2. The control valve device for methane purification according to claim 1, characterized in that: The top of the mounting box (203) is provided with a sealed bearing (2013), which is sleeved on the outside of the driven shaft (2012).

3. The control valve device for methane purification according to claim 1, characterized in that: A support base (2010) is fixedly installed on the top of the mounting box (203). A driven shaft (2012) passes through the support base (2010) and is rotatably connected to the support base (2010). A drive shaft (2016) is rotatably connected to the inner top wall of the support base (2010). A drive motor (2014) is fixedly connected to one end of the drive shaft (2016) away from the support base (2010). The drive motor (2014) is fixed to the top of the mounting box (203). A drive gear (2015) is fixedly installed on the outside of the drive shaft (2016). A driven gear (2011) is fixedly installed on the outside of the driven shaft (2012). The driven gear (2011) meshes with the drive gear (2015).

4. The control valve device for methane purification according to claim 1, characterized in that: The mounting box (203) is provided with a through hole, and the mounting box (203) is connected to the valve body (1) through the through hole. A sealing ring (2018) is fixedly connected inside the mounting box (203) at the through hole.

5. The control valve device for methane purification according to claim 1, characterized in that: The mounting box (203) contains two symmetrically fixed sliding rods (2022), and a sliding plate (2017) is movably sleeved between the two sliding rods (2022). A sealing disc (2021) is fixedly connected to the side of the sliding plate (2017) near the sealing ring (2018). The sealing disc (2021) and the sealing ring (2018) are at the same height, and the outer diameter of the sealing disc (2021) is equal to the outer diameter of the sealing ring (2018).

6. The control valve device for methane purification according to claim 1, characterized in that: The mounting box (203) is symmetrically fixedly connected to two guide rods (2020). A lifting plate (209) is movably sleeved between the two guide rods (2020). The lifting plate (209) is threaded onto the outside of the screw (2019). A movable rod (2023) is rotatably connected to the outside of the lifting plate (209). The end of the movable rod (2023) away from the lifting plate (209) is rotatably connected to the side of the sliding plate (2017) away from the sealing disc (2021).

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