Outdoor airtight well lid

Abstract

The utility model relates to an outdoor airtight well lid, which solves the technical problems that a sewage and waste water drainage pipeline of an existing chemical plant area easily emits smell and a well lid cover plate is easily blocked and stuck, and is provided with a well lid base and a well lid cover plate, the well lid cover plate is externally buckled on the well lid base, and the well lid base and the well lid cover plate are respectively and fixedly connected with a hinge. The well lid base and the well lid cover plate are further connected with a locking device, the locking device can lock the well lid base and the well lid cover plate, and a sealing device is further arranged between the well lid base and the well lid cover plate. The dimethyl sulfoxide prevention device can be widely applied to dimethyl sulfoxide prevention occasions in the carbon fiber industry.

Description

Technical Field

[0001] The utility model relates to the field of water supply and drainage, in particular to an outdoor closed manhole cover. Background Art

[0002] Many industrial wastewater and municipal drainage contain gases that emit pungent or foul odors. For example, in many processes of carbon fiber production, a large amount of universal solvent dimethyl sulfoxide is required. Dimethyl sulfoxide is easily soluble in water and can emit unpleasant odors. Many inspection wells are set up on the sewage and wastewater drainage pipes and municipal drainage pipes in chemical plant areas. The commonly used inspection well covers now have two holes for opening the covers. The bad odor in the sewage and wastewater pipes will be emitted through these holes, polluting the surrounding air; in addition, the manhole covers of the commonly used inspection wells are embedded in the manhole cover base. After a period of time, the gap between the manhole cover and the manhole cover base will be blocked by impurities such as mud or dust, and the deformation of the material due to thermal expansion and contraction will cause the manhole cover to be difficult to remove. Summary of the invention

[0003] The utility model provides an outdoor sealed manhole cover which has good airtightness and is easy to open in order to solve the technical problems that the sewage and wastewater drainage pipes in the existing chemical plant area are easy to emit odors and the manhole cover plates are easy to be blocked and stuck.

[0004] The utility model provides an outdoor sealed manhole cover, an outdoor sealed manhole cover, which is provided with a manhole cover base and a manhole cover plate, the manhole cover cover plate is buckled on the manhole cover base, the manhole cover base and the manhole cover cover plate are respectively fixedly connected with hinges, and is characterized in that the manhole cover base and the manhole cover cover plate are also respectively connected with locking devices, the locking devices can lock the manhole cover base and the manhole cover cover plate, and a sealing device is also provided between the manhole cover base and the manhole cover cover plate.

[0005] Preferably, the locking device is provided with an upper part of the locking device, a lower part of the locking device, a buckle hook, a buckle ring, a movable handle, a fixing piece of the lower part of the locking device and a fixed shaft of the movable handle; the upper part of the locking device is fixedly connected to the buckle hook; the fixing piece of the lower part of the locking device is fixedly connected to the lower part of the locking device, the fixing piece of the lower part of the locking device is connected to the movable handle via a movable handle fixed shaft, the movable handle is connected to the buckle ring, and rotating the movable handle can make the buckle ring hook or loosen with the buckle hook.

[0006] Preferably, a movable handle fixing pin is further provided on the fixing piece of the lower half of the locking device, and the movable handle fixing pin can be inserted into the fixing piece of the lower half of the locking device and the movable handle to fix the movable handle.

[0007] Preferably, a sealing boss is provided on the manhole cover base, and the sealing boss is provided with the sealing device, which is a polytetrafluoroethylene O-ring with a diameter of 6 to 10 mm.

[0008] Preferably, the manhole cover base is provided with an upper convex inclined surface at the hinge with the manhole cover plate, and the manhole cover plate is provided with a lower concave inclined surface matching the upper convex inclined surface at the hinge with the manhole cover base, and the hinge is installed at the highest point of the upper convex inclined surface and the lower concave inclined surface.

[0009] Preferably, the upper convex slope and the lower concave slope have a width of 100 to 140 mm.

[0010] Preferably, a plane with a width of 70 to 100 mm is provided at the end of the manhole cover base and the manhole cover plate for installing a locking device.

[0011] Preferably, the inner diameter of the manhole cover base is 600-1000mm, the height of the manhole cover base is 90-120mm, the height of the manhole cover plate is 60mm, the inner diameter of the manhole cover plate is 6-10mm larger than the outer diameter of the manhole cover base, the bite length between the manhole cover plate and the manhole cover base is 30-50mm, and the total height of the manhole cover after closing is 90-150mm.

[0012] The beneficial effects of the utility model are:

[0013] The utility model hinges the manhole cover plate and the manhole cover base through hinges, which can realize 180° free opening and closing; when closed, the manhole cover plate is buckled on the manhole cover base, and the biggest advantage is that the manhole cover plate and the manhole cover base will not be blocked by impurities such as soil or dust, and deformation such as thermal expansion and contraction of the material, which will cause inconvenience in opening; after the manhole cover plate is closed, it is sealed by the joint action of the sealing device and the locking device, which can prevent the sulfoxide and other odorous gases in the inspection well from overflowing and polluting the environment; the locking device is provided with a fixed pin to prevent the manhole cover plate from being opened due to misoperation. After installing this set of devices, it can not only prevent the loss of the manhole cover plate and the trouble of inconvenience in opening the manhole cover plate due to long-term non-use, but also avoid the overflow of odors such as dimethyl sulfoxide in the inspection well, which can greatly improve the outdoor air quality of the factory area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a plan view of the manhole cover plate of the utility model;

[0015] Figure 2 This is a cross-sectional view of the manhole cover II of the utility model;

[0016] Figure 3 It is a plan view of the base of the manhole cover of the utility model;

[0017] Figure 4It is a II-II cross-sectional view of the manhole cover base of the utility model;

[0018] Figure 5 This is a vertical cross-sectional view of the manhole cover of the utility model after assembly;

[0019] Figure 6a , 6b It is a schematic diagram of the structure of the locking device of the utility model;

[0020] Figure 7 This is a schematic diagram of the hinge structure of the utility model;

[0021] Figure 8 It is a schematic diagram of on-site use of the utility model.

[0022] Description of the accompanying symbols:

[0023] 1. Manhole cover; 2. Manhole cover base; 3. Upper part of locking device; 4. Lower part of locking device; 5. Sealing device; 6. Hinge; 7. Outdoor inspection well; 8. Outdoor sewage drain pipe; 101. Manhole cover logo; 102. Concave slope; 201. Sealing boss; 202. Upper convex slope; 301. Buckle hook; 302. Upper part of buckle bottom plate; 401. Buckle hanging ring; 402. Movable handle; 403. Lower part of buckle bottom plate; 404. Movable handle fixing shaft; 405. Movable handle fixing pin; 406. Lower part fixing part of locking device; 601. Hinge shaft; 602. Hinge fan; 603. Hinge fixing screw hole. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can easily implement the present invention.

[0025] Example:

[0026] like Figure 1-5 As shown, the utility model belongs to an outdoor enclosed manhole cover for preventing dimethyl sulfoxide in the carbon fiber industry, which is provided with a locking device, a manhole cover plate 1 and a manhole cover base 2. The manhole cover plate 1 and the manhole cover base 2 are fixedly connected by a hinge 6. The locking device is provided with a locking device upper half 3 and a locking device lower half 4. The manhole cover plate 1 and the manhole cover base 2 can be fixed and locked by the locking device upper half 3 and the locking device lower half 4. The manhole cover base 2 is provided with a sealing boss 201, and a sealing device 5 is provided on the sealing boss 201.

[0027] The manhole cover plate 1 is buckled on the manhole cover base 2. The inner diameter of the manhole cover base 2 can be 600-1000mm, the height of the manhole cover base 2 is about 90-120mm, the height of the manhole cover plate 1 is about 60mm, the inner diameter of the manhole cover plate 1 is about 6-10mm larger than the outer diameter of the manhole cover base 2, the engagement length of the manhole cover plate 1 and the manhole cover base 2 is about 30-50mm, and the total height of the manhole cover after closing is about 90-150mm. The manhole cover base 2 has an upward convex inclined surface of about 20-25° at the hinge with the manhole cover plate 1, and the manhole cover plate 1 also has a concave inclined surface 102 that matches it, and the width of the inclined surface is about 100-140mm. The hinge 6 is installed at the highest point of the inclined surface, and the main purpose is to increase the axis center position of the shaft when the manhole cover plate 1 is opened, so as to open the manhole cover plate 1 more easily.

[0028] The manhole cover base 2 and the manhole cover plate 1 have a flat surface which is convex outward and concave inward respectively at the location where the locking device is installed. The width of the flat surface is about 70 to 100 mm, so as to install the locking device.

[0029] The sealing device 5 is a polytetrafluoroethylene (PTFE) O-type sealing ring, and the diameter of the sealing ring is about 6 to 10 mm.

[0030] like Figure 6a , 6bAs shown, the locking device is provided with a locking device upper part 3 and a locking device lower part 4. The locking device upper part 3 is composed of a buckle upper half bottom plate 302 and a buckle hook 301 fixed on the buckle upper half bottom plate 302, and the buckle upper half bottom plate 302 is fixed on the manhole cover 1 by a threaded fastener. The lower part 4 of the locking device is composed of a buckle ring 401, a movable handle 402, a movable handle fixed shaft 404, a movable handle fixed pin 405, a locking device lower part fixing piece 406 and a buckle lower part bottom plate 403. The locking device lower part fixing piece 406 is fixed on the buckle lower part bottom plate 403. The locking device lower part fixing piece 406 is provided with a movable handle fixed shaft 404 and a movable handle fixed pin 405. The movable handle fixed shaft 404 is fixed with a movable handle 402. The movable handle 402 is connected to the buckle ring 401. The movable handle fixed pin 405 fixes the movable handle 402 through a through hole on the locking device lower part fixing piece 406; the buckle lower part bottom plate 403 is fixedly connected to the manhole cover base 2 by threaded fasteners. By pressing down the movable handle 402, the buckle ring 401 is driven to move downward and tightly hook the buckle hook 301, and the movable handle fixing pin 405 is used to fix the movable handle 402 and the fixing member 406 of the lower part of the locking device together, so as to prevent the buckle ring 401 from being separated from the buckle hook 301; the movable handle fixing pin 405 is pulled out, and the buckle ring 401 is driven to move upward by lifting the movable handle 402 and then separated from the buckle hook 301. The locking device is made of 304 stainless steel, with a length of about 60 to 80 mm, a width of about 30 to 50 mm, and a thickness of about 10 mm. The upper part 3 of the tightening device and the lower part 4 of the locking device are respectively fixed on the manhole cover plate 1 and the manhole cover base 2. After locking, the movable handle fixing pin 405 is inserted to prevent the manhole cover plate 1 from being opened due to misoperation.

[0031] like Figure 7 As shown in the figure, the structure diagram of hinge 6, the manhole cover plate 1 and the manhole cover base 2 are hinged by hinge 6, and can be opened and closed freely by 180 degrees. The material of hinge 6 is 304 stainless steel. The manhole cover plate 1 and the manhole cover base 2 can be molded by composite recycled plastic or other light, high-strength, corrosion-resistant materials.

[0032] like Figure 8The figure shows a schematic diagram of the on-site use of the utility model. The working principle of the utility model is as follows: after the manhole cover 1 is closed, the sealing device 5 and the locking device work together to achieve airtightness, which can prevent the dimethyl sulfoxide and other gases with bad odors in the inspection well 7 from overflowing and polluting the environment; the locking device is provided with a movable handle fixing bolt 405, which can prevent the manhole cover 1 from being opened due to misoperation. After installing this device, it is not only possible to prevent the loss of the manhole cover 1 and the inconvenience of opening the manhole cover 1 due to long-term non-use, but also to prevent the overflow of dimethyl sulfoxide and other odors in the inspection well 7, which can greatly improve the air quality outdoors in the factory area.

[0033] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the scope of the claims of the utility model shall be within the scope of protection of the utility model.

Claims

1. An outdoor closed manhole cover, which is provided with a manhole cover base and a manhole cover plate, wherein the manhole cover plate is buckled on the manhole cover base, and the manhole cover base and the manhole cover plate are respectively fixedly connected with hinges, wherein: The manhole cover base and the manhole cover cover plate are also respectively connected to the locking device, and the locking device can lock the manhole cover base and the manhole cover cover plate, and a sealing device is also provided between the manhole cover base and the manhole cover cover plate; the locking device is provided with an upper part of the locking device, a lower part of the locking device, a buckle hook, a buckle hanging ring, a movable handle, a fixing piece of the lower part of the locking device and a fixed shaft of the movable handle; the upper part of the locking device is fixedly connected with the buckle hook; the fixing piece of the lower part of the locking device is fixedly connected with the lower part of the locking device, the fixing piece of the lower part of the locking device is connected to the movable handle through the fixed shaft of the movable handle, the movable handle is connected to the buckle hanging ring, and rotating the movable handle can make the buckle hanging ring hook or loosen with the buckle hook.

2. The outdoor closed manhole cover according to claim 1, characterized in that: A movable handle fixing pin is also provided on the fixing piece of the lower half of the locking device, and the movable handle fixing pin can be inserted into the fixing piece of the lower half of the locking device and the movable handle to fix the movable handle.

3. The outdoor closed manhole cover according to claim 1, characterized in that: A sealing boss is provided on the manhole cover base, and the sealing boss is provided with the sealing device, which is a polytetrafluoroethylene O-type sealing ring with a diameter of 6 to 10 mm.

4. The outdoor closed manhole cover according to claim 1, characterized in that: The manhole cover base is provided with an upper convex inclined surface at the hinge with the manhole cover plate, and the manhole cover plate is provided with a lower concave inclined surface matching the upper convex inclined surface at the hinge with the manhole cover base, and the hinge is installed at the highest point of the upper convex inclined surface and the lower concave inclined surface.

5. The outdoor closed manhole cover according to claim 4, characterized in that: The width of the upper convex slope and the lower concave slope is 100 to 140 mm.

6. The outdoor sealed manhole cover according to claim 1, characterized in that: A plane with a width of 70 to 100 mm is provided at the end of the manhole cover base and the manhole cover plate for installing a locking device.

7. The outdoor sealed manhole cover according to claim 1, characterized in that: The inner diameter of the manhole cover base is 600-1000mm, the height of the manhole cover base is 90-120mm, the height of the manhole cover plate is 60mm, the inner diameter of the manhole cover plate is 6-10mm larger than the outer diameter of the manhole cover base, the bite length between the manhole cover plate and the manhole cover base is 30-50mm, and the total height of the manhole cover after closing is 90-150mm.

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