Floor drain explosion-proof plug for petrochemical plants

Abstract

This utility model discloses an explosion-proof drain plug for petrochemical plants, relating to the technical field of plugging devices. It includes a top cover, with a dustproof top plate rotatably connected to the top of the top cover via a damping shaft. An air supply cylinder is fixedly connected to the bottom of the top cover, and a base plate is fixedly connected to the bottom of the air supply cylinder. A plugging airbag is fixedly connected to the outer wall of the air supply cylinder. Two air supply grooves are symmetrically formed at the top of the top cover, and the inner cavities of both grooves communicate with the inner cavity of the top cover. The top cover is equipped with an air supply mechanism for inflating or deflating the inner cavity of the plugging airbag. This utility model, through its air supply mechanism, enables convenient inflation or deflation of the plugging airbag, thereby further improving the efficiency of plugging or de-plugging floor drains.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, specifically an explosion-proof sealing device for floor drains in petrochemical plants. Background Technology

[0002] Petrochemical plants are continuous production facilities for processing crude oil and its intermediate products. They mainly consist of static equipment (such as reaction towers and pressure vessels), dynamic equipment (such as compressors, pumps, and valves), and pressure transmission pipelines. These plants operate in high-temperature and high-pressure environments and are characterized by continuous production and high safety requirements. During the use of petrochemical plants, in order to safely remove hazardous gases, prevent liquid leaks, maintain a clean production environment, and meet environmental protection requirements, floor drains are needed to ensure safe and efficient production and protect the environment and employee health. In order to prevent the leakage of explosive gases and improve overall safety, explosion-proof plugs are installed on floor drains during use.

[0003] Existing drain plugs typically use a screw-driven compression plate to deform a rubber ball, causing it to expand and fit tightly against the drain's inner wall. This isolates the drain from the surrounding environment, preventing the leakage of flammable or toxic gases. However, because the expansion of the rubber ball is achieved by the screw-driven compression plate, both plugging and unplugging require rotating the screw. To further improve the efficiency of plugging and unplugging drains, an explosion-proof drain plug for petrochemical plants is now offered, eliminating the drawbacks of existing devices. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof plug for floor drains in petrochemical plants to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An explosion-proof plug for floor drains in petrochemical plants includes a top cover. A dustproof top plate is rotatably connected to the top of the top cover via a damping shaft. An air supply cylinder is fixedly connected to the bottom of the top cover. A bottom plate is fixedly connected to the bottom of the air supply cylinder. A plugging airbag is fixedly connected to the outer wall of the air supply cylinder. Two air supply grooves are symmetrically opened at the top of the top cover. The inner cavities of the two air supply grooves are interconnected with the inner cavity of the top cover. The top cover is provided with an air supply mechanism for inflating or deflating the inner cavity of the plugging airbag. The gas delivery mechanism includes: A first rubber sealing plate is installed inside the top cover. A connecting slide is fixedly connected to the top of the first rubber sealing plate. A lifting pressure plate is fixedly connected to the top of the connecting slide. The lifting pressure plate extends to the outside of the top of the top cover and is located between two air supply slots. The lifting pressure plate, the connecting slide, and the first rubber sealing plate are all slidably connected to the top cover.

[0006] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative embodiment, the gas delivery mechanism further includes: A rotating assembly mounted on the lifting pressure plate; The rotating assembly includes: A knob is located above the lifting pressure plate. The bottom end of the knob is fixedly connected to a connecting shaft. The connecting shaft passes through the lifting pressure plate to the inside of the connecting slide cylinder. The connecting shaft is rotatably connected to the lifting pressure plate. The bottom end of the connecting shaft is fixedly connected to a guide rod. The connecting slide is provided with a first reset component; The guide rod is equipped with a movable component; The first rubber sealing plate is provided with a first sealing component; A second sealing component is provided on the top cover.

[0007] In one alternative: the first reset component is a first spring sleeved on the outer wall of the connecting slide, one end of the first spring is in contact with the inner wall of the top cover, and the other end of the first spring is in contact with the outer wall of the lifting pressure plate.

[0008] In one alternative embodiment, the moving component includes: A lifting slide cylinder is slidably sleeved on the outer wall of the guide rod. Multiple limiting sliders are fixedly connected circumferentially at equal intervals on the inner wall of the lifting slide cylinder. The outer walls of the multiple limiting sliders are all hemispherical. A guide groove is provided at the position where the guide rod connects with the limiting sliders to allow the limiting sliders to slide. Multiple limiting slide plates are formed circumferentially at equal intervals on the outer wall of the lifting slide cylinder. The connecting slide cylinder and the first rubber sealing plate are slidably sleeved on the outer walls of the lifting slide cylinder and the limiting slide plates.

[0009] In one alternative embodiment: the first blocking component includes: A rubber sealing ring is disposed on the lower surface of the first rubber sealing plate. Multiple connecting slide shafts are fixedly connected to the top of the rubber sealing ring at equal intervals around its circumference. Each of the multiple connecting slide shafts is fixedly connected to a limiting pressure plate. The limiting pressure plate and the connecting slide shafts are slidably connected to the first rubber sealing plate. A reset rubber ring is sleeved on the outer wall of the connecting slide shaft. One end of the reset rubber ring contacts the outer wall of the limiting pressure plate, and the other end of the reset rubber ring contacts the inner wall of the first rubber sealing plate.

[0010] In one alternative: the second sealing component is a second rubber sealing plate that is slidably connected inside the top cover, and the second rubber sealing plate is located below the first rubber sealing plate; The second rubber sealing plate is provided with a sliding component.

[0011] In one alternative embodiment, the sliding component includes: Multiple connecting slide rods are circumferentially and equidistantly fixed to the top of the second rubber sealing plate. Each of the multiple connecting slide rods has a limit baffle fixedly connected to its top. Both the connecting slide rods and the limit baffles are slidably connected to the top cover. A second reset component is provided on the connecting slide rod.

[0012] In one alternative: the second reset component is a second spring sleeved on the outer wall of the connecting slide rod, one end of the second spring is in contact with the outer wall of the limiting baffle, and the other end of the second spring is in contact with the inner wall of the top cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through its gas delivery mechanism, enables convenient inflation or deflation of the sealing airbag, thereby further improving the efficiency of sealing or unsealing floor drains. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the top cover of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the lifting slide of this utility model.

[0017] Figure 4 For the present utility model Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0018] Attached Figure Labels: 1. Top Cover; 201. Knob; 202. Lifting Pressure Plate; 203. First Spring; 204. Rubber Sealing Ring; 205. First Rubber Sealing Plate; 206. Second Rubber Sealing Plate; 207. Limiting Baffle; 208. Second Spring; 209. Lifting Slide Cylinder; 2010. Limiting Slide Block; 2011. Guide Rotary Rod; 2012. Connecting Rotary Shaft; 2013. Connecting Slide Cylinder; 2014. Connecting Slide Rod; 2015. Limiting Pressure Plate; 2016. Reset Rubber Ring; 2017. Connecting Slide Shaft; 3. Sealing Airbag; 4. Air Supply Cylinder; 5. Base Plate; 6. Dustproof Top Plate; 7. Air Supply Channel. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] In one embodiment, such as Figures 1-4 As shown, the explosion-proof plug for floor drains in petrochemical plants includes a top cover 1. The top of the top cover 1 is rotatably connected to a dustproof top plate 6 via a damping shaft. The bottom of the top cover 1 is fixedly connected to an air supply cylinder 4. The bottom of the air supply cylinder 4 is fixedly connected to a bottom plate 5. A sealing airbag 3 is fixedly connected to the outer wall of the air supply cylinder 4. Two air supply grooves 7 are symmetrically opened at the top of the top cover 1. The inner cavities of the two air supply grooves 7 are interconnected with the inner cavity of the top cover 1. Multiple sets of air supply holes are equidistantly opened on the outer wall of the air supply cylinder 4. The multiple sets of air supply holes are interconnected with the inner cavity of the air supply cylinder 4. The top cover 1 is provided with an air supply mechanism for inflating or deflating the inner cavity of the sealing airbag 3. The gas supply mechanism includes: a first rubber sealing plate 205 disposed inside the top cover 1, a connecting slide 2013 fixedly connected to the top of the first rubber sealing plate 205, a lifting pressure plate 202 fixedly connected to the top of the connecting slide 2013, the lifting pressure plate 202 extending to the outside of the top of the top cover 1, the lifting pressure plate 202 being located between two gas supply slots 7, the lifting pressure plate 202, the connecting slide 2013, and the first rubber sealing plate 205 being slidably connected to the top cover 1, a dustproof groove for the knob 201 to slide on the dustproof top plate 6, and the bottom ports of the two gas supply slots 7 being located below the first rubber sealing plate 205; In this embodiment, when in use, the top cover 1 is placed at the port of the floor drain. During this process, the air cylinder 4, driven by the top cover 1, drives the sealing airbag 3 and the bottom plate 5 to be inserted into the inner cavity of the floor drain. When it is necessary to seal the drain port, rotate the dustproof top plate 6. Then, through the air supply mechanism, the air in the inner cavity of the top cover 1 can be discharged into the inner cavity of the air supply cylinder 4, and the outside air can be drawn into the inner cavity of the top cover 1 through the air supply groove 7. At this time, the air in the inner cavity of the air supply cylinder 4 can be discharged into the inner cavity of the sealing airbag 3 through the air supply hole. Then, repeat the above operation to inflate the sealing airbag 3 until the sealing airbag 3 is completely attached to the inner wall of the drain, so as to facilitate the sealing operation of the drain. When it is necessary to unblock the floor drain, the sealing airbag 3 can be deflated through the air supply mechanism. At the same time, the sealing airbag 3 will recover its elasticity, thus easily unblocking the floor drain. This can further improve the efficiency of sealing or unblocking the floor drain. In one embodiment, such as Figures 1-3 As shown, the gas delivery mechanism also includes a rotating assembly mounted on the lifting pressure plate 202; The rotating assembly includes: a knob 201 disposed above the lifting pressure plate 202, a connecting shaft 2012 fixedly connected to the bottom end of the knob 201, the connecting shaft 2012 passing through the lifting pressure plate 202 to the interior of the connecting slide cylinder 2013, the connecting shaft 2012 being rotatably connected to the lifting pressure plate 202, and a guide rod 2011 fixedly connected to the bottom end of the connecting shaft 2012; A first reset component is provided on the connecting slide 2013; A movable component is provided on the guide rod 2011; A first sealing assembly is provided on the first rubber sealing plate 205; A second sealing component is provided on the top cover 1; The movable component includes: a lifting slide cylinder 209 slidably sleeved on the outer wall of the guide rod 2011; multiple limiting sliders 2010 are fixedly connected to the inner wall of the lifting slide cylinder 209 at equal intervals; the outer walls of the multiple limiting sliders 2010 are all hemispherical; a guide groove for the limiting sliders 2010 to slide is provided at the contact position between the guide rod 2011 and the limiting sliders 2010; multiple limiting slide plates are formed at equal intervals on the outer wall of the lifting slide cylinder 209; the connecting slide cylinder 2013 and the first rubber sealing plate 205 are slidably sleeved on the outer walls of the lifting slide cylinder 209 and the limiting slide plates; through the mutual cooperation of the rotating component and the movable component, the sealing airbag 3 can be deflated when the blockage of the floor drain is released. In one embodiment, such as Figure 2 As shown, the first reset component is a first spring 203 sleeved on the outer wall of the connecting slide 2013. One end of the first spring 203 is in contact with the inner wall of the top cover 1, and the other end of the first spring 203 is in contact with the outer wall of the lifting pressure plate 202. The lifting pressure plate 202 can be pushed to slide and reset by the first spring 203. In one embodiment, such as Figures 2-3 As shown, the first sealing component includes: A rubber sealing ring 204 is provided on the lower surface of the first rubber sealing plate 205. Multiple connecting slide shafts 2017 are fixedly connected to the top of the rubber sealing ring 204 at equal intervals in the circumference. Limiting pressure plates 2015 are fixedly connected to the top of each of the multiple connecting slide shafts 2017. The limiting pressure plates 2015 and the connecting slide shafts 2017 are slidably connected to the first rubber sealing plate 205. A reset rubber ring 2016 is sleeved on the outer wall of the connecting slide shaft 2017. One end of the reset rubber ring 2016 contacts the outer wall of the limiting pressure plate 2015, and the other end of the reset rubber ring 2016 contacts the inner wall of the first rubber sealing plate 205. Multiple vent holes extending to the outside of the bottom end of the first rubber sealing plate 205 are opened at equal intervals in the circumference of the top of the first rubber sealing plate 205. The multiple vent holes are intersected with the multiple connecting slide shafts 2017 respectively. The ports of the vent holes can be blocked by the rubber sealing ring 204. In one embodiment, such as Figures 2-4 As shown, the second sealing component is a second rubber sealing plate 206 that is slidably connected inside the top cover 1, and the second rubber sealing plate 206 is located below the first rubber sealing plate 205. A sliding component is provided on the second rubber sealing plate 206; The sliding assembly includes: multiple connecting slide rods 2014 that are circumferentially and equidistantly fixed to the top of the second rubber sealing plate 206; each of the multiple connecting slide rods 2014 has a limit baffle 207 fixedly connected to its top; and both the connecting slide rods 2014 and the limit baffle 207 are slidably connected to the top cover 1. A second reset assembly is provided on the connecting slide bar 2014; The second reset component is a second spring 208 sleeved on the outer wall of the connecting slide rod 2014. One end of the second spring 208 contacts the outer wall of the limiting baffle 207, and the other end of the second spring 208 contacts the inner wall of the top cover 1. Through the cooperation of the second sealing component, the sliding component and the second reset component, the port of the air cylinder 4 can be sealed to prevent air leakage in the inner cavity of the airbag 3.

[0021] The above embodiments disclose an explosion-proof plug for floor drains in petrochemical plants. In use, the top cover 1 is placed at the port of the floor drain. During this process, the air supply cylinder 4, driven by the top cover 1, drives the sealing airbag 3 and the bottom plate 5 to be inserted into the inner cavity of the floor drain. When it is necessary to seal the port of the floor drain, the dustproof top plate 6 is rotated to separate from the outer wall of the knob 201. Then, the knob 201 is pressed to push the lifting pressure plate 202 to slide down along the inner wall of the top cover 1. At this time, the first rubber sealing plate 205 slides synchronously along the inner wall of the top cover 1 through the connecting slide cylinder 2013 under the push of the lifting pressure plate 202. At the same time, the lifting pressure plate 202 contracts by moving and squeezing the first spring 203. During this process, when the first rubber sealing plate 205 moves below the air supply slot 7 port, the air in the inner cavity of the top cover 1 is compressed and pushed by the rubber sealing ring 204 and the first rubber sealing plate 205, applying pressure to the upper surface of the second rubber sealing plate 206. At the same time, under the pressure of the air, the second rubber sealing plate 206 separates from the inner wall of the top cover 1, and drives the limiting baffle 207 to slide along the inner wall of the top cover 1 through the connecting slide rod 2014. At this time, the limiting baffle 207 compresses the second spring 208 by moving. The air in the inner cavity of the top cover 1 is discharged into the inner cavity of the air supply cylinder 4, and the outside air is drawn into the inner cavity of the top cover 1 through the air supply groove 7. At this time, the air in the inner cavity of the air supply cylinder 4 can be discharged into the inner cavity of the sealing airbag 3 through the air supply hole. At the same time, the second spring 208 pushes the limiting baffle 207 to reset by rebound. At this time, the second rubber sealing plate 206 is tightly attached to the inner wall of the top cover 1 through the connecting slide rod 2014 under the action of the limiting baffle 207, so as to prevent the air in the inner cavity of the air supply cylinder 4 from leaking. Then, release the knob 201. At this time, the first spring 203 pushes the lifting pressure plate 202 to reset by rebound. At the same time, through the cooperation of the vent and air pressure, the rubber sealing ring 204 can be separated from the outer wall of the first rubber sealing plate 205. At this time, the limiting pressure plate 2015, through the connecting slide shaft 2017, squeezes the reset rubber ring 2016 to shrink under the drive of the rubber sealing ring 204. At the same time, air can be delivered to the space between the first rubber sealing plate 205 and the second rubber sealing plate 206 through the vent until the first rubber sealing plate 205 is reset. At this time, the reset rubber ring 2016 pushes the limiting pressure plate 2015 to reset by rebound. In this way, the vent port can be blocked by the rubber sealing ring 204. Then, the above operation is repeated. In this way, the sealing airbag 3 can be inflated by inflation until the sealing airbag 3 is completely attached to the inner wall of the floor drain, so as to facilitate the sealing operation of the floor drain. When it is necessary to unblock the floor drain, the knob 201 is turned. At the same time, the guide rod 2011 rotates under the drive of the knob 201 through the connecting shaft 2012. At this time, the lifting slide cylinder 209 slides down along the inner wall of the connecting slide cylinder 2013 and the first rubber sealing plate 205 under the limiting guide of the guide slide groove through the limiting slide plate 2010. When the lifting slide cylinder 209 contacts the outer wall of the second rubber sealing plate 206, the second rubber sealing plate 206 separates from the inner wall of the top cover 1 under the push of the lifting slide cylinder 209. At the same time, the sealing airbag 3 recovers its elasticity to facilitate the deflation operation of the sealing airbag 3, thereby conveniently unblocking the floor drain and further improving the efficiency of sealing or unblocking the floor drain.

[0022] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An explosion-proof plug for a floor drain in a petrochemical plant, comprising a top cover (1), wherein a dustproof top plate (6) is rotatably connected to the top of the top cover (1) via a damping shaft, an air supply cylinder (4) is fixedly connected to the bottom of the top cover (1), a bottom plate (5) is fixedly connected to the bottom of the air supply cylinder (4), a plugging airbag (3) is fixedly connected to the outer wall of the air supply cylinder (4), and two air supply grooves (7) are symmetrically opened at the top of the top cover (1), the inner cavities of the two air supply grooves (7) are interconnected with the inner cavity of the top cover (1), characterized in that, The top cover (1) is provided with an air supply mechanism for inflating or deflating the inner cavity of the sealing airbag (3); The gas supply mechanism includes: a first rubber sealing plate (205) disposed inside the top cover (1), a connecting slide (2013) fixedly connected to the top of the first rubber sealing plate (205), a lifting pressure plate (202) fixedly connected to the top of the connecting slide (2013), the lifting pressure plate (202) extending to the outside of the top of the top cover (1), the lifting pressure plate (202) being located between two gas supply slots (7), and the lifting pressure plate (202), the connecting slide (2013), and the first rubber sealing plate (205) all slidingly connected to the top cover (1) vertically.

2. The explosion-proof drain plug for petrochemical plants according to claim 1, characterized in that, The gas delivery mechanism also includes a rotating assembly mounted on the lifting pressure plate (202); The rotating assembly includes: a knob (201) disposed above the lifting pressure plate (202), the bottom end of the knob (201) being fixedly connected to a connecting shaft (2012), the connecting shaft (2012) passing through the lifting pressure plate (202) to the interior of the connecting slide (2013), the connecting shaft (2012) being rotatably connected to the lifting pressure plate (202), and the bottom end of the connecting shaft (2012) being fixedly connected to a guide rod (2011). The connecting slide (2013) is provided with a first reset component; A movable component is provided on the guide rod (2011); The first rubber sealing plate (205) is provided with a first sealing component; The top cover (1) is provided with a second sealing component.

3. The explosion-proof drain plug for petrochemical plants according to claim 2, characterized in that, The first reset component is a first spring (203) sleeved on the outer wall of the connecting slide (2013). One end of the first spring (203) is in contact with the inner wall of the top cover (1), and the other end of the first spring (203) is in contact with the outer wall of the lifting pressure plate (202).

4. The explosion-proof sealing device for floor drains in petrochemical plants according to claim 2, characterized in that, The moving component includes: a lifting slide cylinder (209) slidably sleeved on the outer wall of the guide rotating rod (2011), a plurality of limiting sliders (2010) are fixedly connected circumferentially at equal intervals on the inner wall of the lifting slide cylinder (209), the outer walls of the plurality of limiting sliders (2010) are all hemispherical, a guide groove for the limiting sliders (2010) to slide is provided at the contact position between the guide rotating rod (2011) and the limiting sliders (2010), a plurality of limiting slide plates are formed circumferentially at equal intervals on the outer wall of the lifting slide cylinder (209), and the connecting slide cylinder (2013) and the first rubber sealing plate (205) are slidably sleeved on the outer walls of the lifting slide cylinder (209) and the limiting slide plates.

5. The explosion-proof sealing device for floor drains in petrochemical plants according to claim 2, characterized in that, The first sealing assembly includes: a rubber sealing ring (204) disposed on the lower surface of the first rubber sealing plate (205), a plurality of connecting slide shafts (2017) being fixedly connected circumferentially at equal intervals to the top end of the rubber sealing ring (204), a limiting pressure plate (2015) being fixedly connected to the top end of each of the plurality of connecting slide shafts (2017), the limiting pressure plate (2015) and the connecting slide shafts (2017) being slidably connected to the first rubber sealing plate (205), a reset rubber ring (2016) being sleeved on the outer wall of the connecting slide shaft (2017), one end of the reset rubber ring (2016) being in contact with the outer wall of the limiting pressure plate (2015), and the other end of the reset rubber ring (2016) being in contact with the inner wall of the first rubber sealing plate (205).

6. The explosion-proof drain plug for petrochemical plants according to claim 2, characterized in that, The second sealing component is a second rubber sealing plate (206) that is slidably connected inside the top cover (1), and the second rubber sealing plate (206) is located below the first rubber sealing plate (205); A sliding assembly is provided on the second rubber sealing plate (206).

7. The explosion-proof drain plug for petrochemical plants according to claim 6, characterized in that, The sliding assembly includes: a plurality of connecting slide rods (2014) that are circumferentially and equidistantly fixed to the top of the second rubber sealing plate (206), and a limit baffle (207) is fixedly connected to the top of each of the plurality of connecting slide rods (2014), and the connecting slide rods (2014) and the limit baffle (207) are slidably connected to the top cover (1); A second reset component is provided on the connecting slide bar (2014).

8. The explosion-proof drain plug for petrochemical plants according to claim 7, characterized in that, The second reset component is a second spring (208) sleeved on the outer wall of the connecting slide (2014). One end of the second spring (208) is in contact with the outer wall of the limiting baffle (207), and the other end of the second spring (208) is in contact with the inner wall of the top cover (1).

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