A new manhole device for bulk material tank

Abstract

The utility model relates to manhole technology field especially disclose a new manhole device for bulk material tank, including first connecting plate, valve seat, valve plate, two second connecting plates and two groups of actuators, valve seat sets up between first connecting plate and two second connecting plates, valve seat and first connecting plate detachable connection, the clearance is provided in the valve seat middle, and one end of valve plate is located between two second connecting plates and with two second connecting plates detachable connection, and first connecting plate and two second connecting plates are connected through two groups of actuators distance adjustable, and the other end of valve plate can be inserted and set in the clearance in the middle of valve seat. The utility model discloses through valve plate and valve seat insert and cooperate the opening and closing of manhole, has spared the complicated, long time bolt and closes the process, effectively avoided the mechanical fatigue of repeatedly screwing the bolt, and two sides adopt the actuator, and the valve body is pulled apart or closed, and can be operated nearby also can open manhole remotely, and the operation is convenient, and the structure is simple and easy to realize.

Description

Technical Field

[0001] This utility model relates to the field of manhole technology, and in particular to a novel manhole device for bulk material tanks. Background Technology

[0002] Manholes, also known as inspection holes, are typically covered passageways through which personnel can enter and exit equipment or tanks for maintenance. Conventional manholes are usually flanged or bolted connections. When an abnormality or malfunction requires maintenance, the manhole must be opened. Each opening requires the removal of all bolts, making the operation complex and time-consuming. Repeated opening and closing over a long period can cause mechanical fatigue in components such as the manhole cover and bolts, and may even lead to serious problems such as flange warping or cracking of welded parts. In addition, when the manhole is located on the top or side of the equipment, debris and dust often accumulate at the manhole due to its location and structure. When the manhole is opened, these debris and dust can easily fall into the equipment, causing pollution. Rainwater can also accumulate, causing corrosion of the flange cover and bolts. Therefore, in order to improve the shortcomings of the existing technology, it is necessary to propose an improvement to overcome the above-mentioned defects. Utility Model Content

[0003] The purpose of this invention is to solve the problems in the prior art and provide a novel manhole device for bulk material tanks.

[0004] The technical solution of this utility model is as follows: A novel manhole device for bulk material tanks includes a first connecting plate, a valve seat, a valve plate, a manhole cover, two second connecting plates, and two sets of actuators. The valve seat is disposed between the first connecting plate and the two second connecting plates, with a gap in the middle of the valve seat. One end of the valve plate is located between the two second connecting plates and is detachably connected to the two second connecting plates. The first connecting plate and the two second connecting plates are connected by two sets of actuators with adjustable distance. The other end of the valve plate is insertable and removable in the gap in the middle of the valve seat. The manhole cover is openable and closable on the valve seat through a telescopic component and can cover the other end of the valve plate.

[0005] Preferably, it also includes two flower-shaped connecting plates, one end of which is integrally mounted on the manhole cover, and the other end of which is hinged to a valve seat near the side of the second connecting plate.

[0006] Preferably, the valve seat includes a valve ring plate, the front end of the valve ring plate is an annular structure, and multiple threaded holes are provided at the edge of the annular structure. The rear end of the valve ring plate is integrally tangent to its front end. A gap is provided in the middle of the valve seat, which is a valve plate cavity. Multiple threaded holes are provided at the rear end of the valve ring plate.

[0007] Preferably, the valve seat also includes a pressure plate, and a packing groove is provided at the rear end of the valve ring plate, and the pressure plate presses the sealing packing into the packing groove.

[0008] Preferably, the first connecting plate includes a first body, and the side of the first body connected to the valve seat is provided with an arc that connects to the valve ring plate. The first body is provided with a plurality of connecting holes, and both ends of the first body are provided with connecting grooves. The sidewalls of the connecting grooves are provided with pin holes.

[0009] Preferably, the second connecting plate includes a second body, which is provided with a fixing hole and a plurality of connecting holes, and both ends of the second body are provided with elongated slots.

[0010] Preferably, the other end of the valve plate has a semi-circular arc structure, and one end of the valve plate is provided with a fixing hole.

[0011] Preferably, the actuator is an electric push rod, an electro-hydraulic push rod, a telescopic hydraulic cylinder, or a telescopic pneumatic cylinder.

[0012] Preferably, the telescopic component is a gas spring, with the fixed end of the telescopic component hinged to the second connecting plate and the extended end of the telescopic component hinged to the flower-shaped connecting plate.

[0013] Preferably, two flower-shaped connecting plates are arranged side by side, and the other end of the flower-shaped connecting plate is hinged to the valve seat through a fixing seat. The fixing seat includes a flat plate and two side ear plates. The two side ear plates stand at both ends of the flat plate. Two connecting holes are provided at intervals on the flat plate, and pin holes are provided on the side ear plates.

[0014] The present invention adopts the above structure and has the following advantages:

[0015] 1. The manhole is opened and closed by the sliding cooperation of the valve plate and valve seat, which eliminates the complicated and time-consuming bolting process and effectively avoids mechanical fatigue from repeated bolt tightening; actuators on both sides are used to pull open or close the valve body, and the manhole can be opened locally or remotely. It is easy to operate and the structure is simple and easy to implement.

[0016] 2. The valve plate and valve seat use metal seals, eliminating the need to replace the sealing rings, thus saving costs and increasing efficiency;

[0017] 3. The upper manhole cover can be interlocked with the valve plate and open and close accordingly, which can prevent foreign objects or rainwater from falling into the valve plate and also indicate the closed status of the valve plate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the open state of this utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the present invention in the closed state;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixed base;

[0021] Figure 4 This is a top view of the valve seat structure.

[0022] Figure 5 This is a schematic diagram of the full cross-sectional structure of the valve seat;

[0023] Figure 6 This is a three-dimensional structural diagram of the first connecting plate;

[0024] Figure 7 This is a three-dimensional structural diagram of the second connecting plate;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the valve plate.

[0026] In the diagram, 1. First connecting plate; 2. Valve seat; 3. Manhole cover; 4. Second connecting plate; 5. Gas spring; 6. Valve plate; 7. Piston rod; 8. Cylinder body; 9. Motor; 10. First ear plate; 11. Flower-shaped connecting plate; 12. Second ear plate; 13. Smooth rod; 14. Fixing seat; 15. Third ear plate; 16. Ear plate fixing seat; 17. Fixing bolt; 101. First body; 102. Connecting hole one; 103. Connecting groove; 104, pin hole one; 201, valve ring plate; 202, threaded hole; 203, pressure plate; 204, valve plate cavity; 205, sealing packing; 401, second body; 402, connecting hole two; 403, fixing hole one; 404, elongated slot; 601, fixing hole two; 602, semi-circular arc body; 1401, flat plate; 1402, connecting hole three; 1403, side ear plate; 1404, pin hole two. Detailed Implementation

[0027] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0028] Example 1:

[0029] like Figure 1 As shown, a novel manhole device for bulk material tanks includes a first connecting plate 1, a valve seat 2, a valve plate 6, a manhole cover 3, two second connecting plates 4, and two sets of actuators. It also includes two flower-shaped connecting plates 11. The valve seat 2 is installed between the first connecting plate 1 and the two second connecting plates 4. The valve seat 2 and the first connecting plate 1 are connected by bolts and nuts. There is a gap in the middle of the valve seat 2. One end of the valve plate 6 is located between the two second connecting plates 4 and is connected to the two second connecting plates 4 by bolts and nuts. The first connecting plate 1 and the two second connecting plates 4 are connected by two sets of actuators with adjustable distance. The other end of the valve plate 6 can be inserted and removed into the gap in the middle of the valve seat 2. The actuator is an electric push rod, an electro-hydraulic push rod, a telescopic oil cylinder, or a telescopic air cylinder. In this embodiment, the actuator is an electric push rod. The electric push rod includes a piston rod 7, a cylinder body 8, and a motor 9. The extended end of the electric push rod is hinged between the two second connecting plates 4 through a first ear plate 10.

[0030] like Figure 2 As shown, one end of the flower-shaped connecting plate 11 is integrally welded to the manhole cover 3. The manhole cover 3 is installed on the valve seat 2 via a gas spring 5 and can cover the other end of the valve plate 6, thus preventing rainwater and dust from damaging the valve plate 6. Two flower-shaped connecting plates 11 are arranged side by side, and a horizontal plate is welded between the two flower-shaped connecting plates 11. The protruding end of the gas spring 5, that is, one end of the smooth rod 13, is hinged to the horizontal plate via the second ear plate 12. The other end of the flower-shaped connecting plate 11 is hinged to the valve seat 2 near the second connecting plate 4 via a fixing seat 14. Figure 3 As shown, the fixing base 14 includes a flat plate 1401 and two side ear plates 1403. The two side ear plates 1403 are integrally erected at both ends of the flat plate 1401. Two connecting holes 1402 are machined at intervals on the flat plate 1401. The connecting holes 1402 are used to connect the fixing base 14. The side ear plates 1403 are machined with pin holes 1404. The pin holes 1404 are used to hinge the flower-shaped connecting plate 11.

[0031] like Figure 4 and Figure 5 As shown, the valve seat 2 includes a valve ring plate 201. The front end of the valve ring plate 201 is an annular structure, and multiple threaded holes are machined along the edge of the annular structure. The threaded holes are connected to the front end of the valve ring plate 201 and the first connecting plate 1 by bolts and nuts. The rear end of the valve ring plate 201 is integrally tangent to its front end. There is a gap in the middle of the valve seat 2, which is the valve plate cavity 204. Multiple threaded holes 202 are machined at the rear end of the valve ring plate 201. These threaded holes 202 are used to install the other end of the flower-shaped connecting plate 11 by bolts and nuts. The valve seat 2 also includes a pressure plate 203. A packing groove is machined at the rear end of the valve ring plate 201. The pressure plate 203 presses the sealing packing 205 into the packing groove.

[0032] like Figure 6 As shown, the first connecting plate 1 includes a first body 101. The side of the first body 101 connected to the valve seat 2 is machined with an arc that connects with the valve ring plate 201. The first body 101 is machined with a plurality of connecting holes 102. The plurality of connecting holes 102 work in conjunction with a plurality of screw holes at the edge of the annular structure. Both ends of the first body 101 are machined with connecting grooves 103. The sidewall of the connecting groove 103 is machined with a pin hole 104. The connecting groove 103 is used to accommodate the fixed end of the electric push rod and fixes it to the first connecting plate 1 through the pin hole 104 and a pin.

[0033] like Figure 7As shown, the second connecting plate 4 includes a second body 401. The second body 401 is machined with a first fixing hole 403 and multiple second connecting holes 402. The first fixing hole 403 is used to connect the valve plate 6. The multiple second connecting holes 402 are used to install the ear plate fixing seat 16 through multiple fixing bolts 17. The third ear plate 15 is installed on the ear plate fixing seat 16 and the fixed end of the gas spring 5 is hinged to the second connecting plate 4 through the third ear plate 15. Both ends of the second body 401 are machined with elongated slots 404. The elongated slots 404 are used to hinge the extended end of the electric push rod through the first ear plate 10.

[0034] like Figure 8 As shown, the other end of the valve plate 6 has a semi-circular arc 602 structure. One end of the valve plate 6 is machined with a fixing hole 601, which is used to connect the valve plate 6 and the second connecting plate 4.

[0035] Working principle: Motor 9 drives piston rod 7 to extend, causing valve plate 6 to extend outward along valve seat 2. Manhole cover 3 is lifted and erected accordingly, at which point the manhole is open, allowing access to the bulk material tank for internal maintenance or material feeding. Motor 9 drives piston rod 7 to retract, causing valve plate 6 to retract inward along valve seat 2. Manhole cover 3 is closed accordingly, at which point the manhole is shut, and the bulk material tank can perform normal storage and conveying operations.

[0036] It should be noted that the above-mentioned sealing packing 205, motor 9, actuator, telescopic component, bolt, and nut are all applications of existing technology.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A novel manhole device for bulk material tanks, characterized in that: The device includes a first connecting plate (1), a valve seat (2), a valve plate (6), a manhole cover (3), two second connecting plates (4), and two sets of actuators. The valve seat (2) is located between the first connecting plate (1) and the two second connecting plates (4). A gap is provided in the middle of the valve seat (2). One end of the valve plate (6) is located between the two second connecting plates (4) and is detachably connected to the two second connecting plates (4). The first connecting plate (1) and the two second connecting plates (4) are connected by two sets of actuators with adjustable distance. The other end of the valve plate (6) can be inserted and removed into the gap in the middle of the valve seat (2). The manhole cover (3) can be opened and closed on the valve seat (2) through a telescopic component and can cover the other end of the valve plate (6).

2. The novel manhole device for bulk material tanks according to claim 1, characterized in that: It also includes two flower-shaped connecting plates (11), one end of which is integrally mounted on the manhole cover (3), and the other end of which is hinged to the valve seat (2) on the side near the second connecting plate (4).

3. A novel manhole device for bulk material tanks according to claim 2, characterized in that: The valve seat (2) includes a valve ring plate (201). The front end of the valve ring plate (201) is an annular structure. Multiple screw holes are provided at the edge of the annular structure. The rear end of the valve ring plate (201) is integrally tangent to its front end. A gap is provided in the middle of the valve seat (2). The gap is a valve plate cavity (204). Multiple threaded holes (202) are provided at the rear end of the valve ring plate (201).

4. A novel manhole device for bulk material tanks according to claim 3, characterized in that: The valve seat (2) also includes a pressure plate (203), and a packing groove is provided at the rear end of the valve ring plate (201). The pressure plate (203) presses the sealing packing (205) into the packing groove.

5. A novel manhole device for bulk material tanks according to claim 4, characterized in that: The first connecting plate (1) includes a first body (101). The first body (101) and the valve seat (2) are connected by an arc that connects with the valve ring plate (201). The first body (101) is provided with a plurality of connecting holes (102). Both ends of the first body (101) are provided with connecting grooves (103). The sidewall of the connecting groove (103) is provided with a pin hole (104).

6. A novel manhole device for bulk material tanks according to claim 5, characterized in that: The second connecting plate (4) includes a second body (401), which is provided with a fixing hole (403) and multiple connecting holes (402). Both ends of the second body (401) are provided with elongated slots (404).

7. A novel manhole device for bulk material tanks according to claim 6, characterized in that: The other end of the valve plate (6) is a semi-circular arc (602) structure, and a fixing hole (601) is provided at one end of the valve plate (6).

8. A novel manhole device for bulk material tanks according to claim 7, characterized in that: The actuator is an electric push rod, an electro-hydraulic push rod, a telescopic hydraulic cylinder, or a telescopic pneumatic cylinder.

9. A novel manhole device for bulk material tanks according to claim 8, characterized in that: The telescopic component is a gas spring (5), the fixed end of the telescopic component is hinged to the second connecting plate (4), and the extended end of the telescopic component is hinged to the flower-shaped connecting plate (11).

10. A novel manhole device for bulk material tanks according to claim 9, characterized in that: Two flower-shaped connecting plates (11) are arranged side by side. The other end of the flower-shaped connecting plate (11) is hinged to the valve seat (2) through a fixing seat (14). The fixing seat (14) includes a flat plate (1401) and two side ear plates (1403). The two side ear plates (1403) stand at both ends of the flat plate (1401). Two connecting holes (1402) are provided at intervals on the flat plate (1401). Pin holes (1404) are provided on the side ear plates (1403).

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