CN116692270A - Tank container and valve protection box thereof - Google Patents

Abstract

The application relates to a tank container and a valve protection box thereof. The valve protection box comprises a box body, a box cover and an error prevention piece. The box body is arranged at the valve part of the tank container, and is provided with an operation port. The box cover is hinged to one side of the box body, and covers the operation opening to open or close the operation opening. The error preventing piece is provided with a first end and a second end which are opposite, the first end is connected to the box cover, the second end is a free end, and the error preventing piece extends from the box cover to the box body. The error preventing piece can interfere with the handle part which is not in the closing position, so that the box cover cannot be closed, and when the handle part is in the closing position, the error preventing piece is not interfered with the handle part all the time, so that the box cover can be closed. By arranging the error preventing piece connected with the box cover, the error preventing piece is interfered with the handle part at the non-closing position along with the movement of the box cover in the closing process of the box cover, but is not interfered with the handle part at the closing position. Therefore, the box cover can be closed only when the valve element is correctly closed, and potential safety hazards are eliminated.

Description

Tank container and valve protection box thereof

Technical Field

The application relates to the technical field of containers, in particular to a tank container and a valve protection box thereof.

Background

The tank container mainly comprises a tank body and a frame for supporting the tank body. The bottom of one end of the tank body is provided with a valve element, the outside of the valve element is provided with a protection box for protecting the valve element by a user, and the protection box can increase the safety and operability in transportation.

The current protection box is usually a box body structure with a cover, the cover can turn around a hinge, and the cover and the box body are locked by a bolt. In the daily operation process, the situation that the box cover is closed and the valve member is not closed in place often occurs, and great potential safety hazards exist.

Disclosure of Invention

An object of the present application is to solve the drawbacks of the prior art and provide a valve protection box capable of ensuring that a cap can be closed only after a valve is properly closed. In order to solve the technical problems, the application adopts the following technical scheme:

a valve element protection case for protecting a valve element of a tank container, the valve element having a handle portion having a closed position for closing the valve element, comprising:

the box body is arranged at the valve part of the tank container and is provided with an operation port;

the box cover is hinged to one side edge of the box body, and is covered at the operation opening to open or close the operation opening; and

the error prevention piece is provided with a first end and a second end which are opposite, the first end is connected to the box cover, the second end is a free end, and the error prevention piece extends from the box cover into the box body;

the error preventing piece can interfere with the handle part which is not in the closing position, so that the box cover cannot be closed, and when the handle part is in the closing position, the error preventing piece is not interfered with the handle part all the time, so that the box cover can be closed.

In one embodiment, the lid has an opening operation opening to a maximum open position, and when the lid is in the open position, the lowest point of the error preventing member is higher than any portion of the handle portion.

In one embodiment, the valve element protection cartridge further comprises a limiting member disposed between the cartridge body and the cartridge cover, the limiting member being adapted to enable the cartridge cover to be maintained in the open position.

In one embodiment, the spacing member comprises:

the limiting seat is arranged on the box body and provided with a limiting hole; and

one end of the limiting rod is hinged to the box cover, and the other end of the limiting rod can penetrate through the limiting hole and is fixed relative to the limiting seat.

In one embodiment, the first end is hingedly connected to the lid for rotation therewith;

the box body is internally provided with a guide piece, the guide piece is provided with a guide hole, the error prevention piece is arranged in the guide hole in a penetrating way, and the error prevention piece can rotate within a range limited by the guide hole.

In one embodiment, the part of the error preventing member near the second end is bent toward the operation port side to form a bent portion.

In one embodiment, the width of the second end is greater than the width of the bend.

In one embodiment, the cartridge comprises:

the bottom plate is fixedly connected to the bottom of the tank container;

the top plate and the bottom plate are oppositely arranged on the tank container at intervals, and the box cover is hinged to the side edge of the top plate; and

the two side plates are respectively arranged at the two ends of the bottom plate, the top ends of the side plates are fixedly connected with the top plate, the bottom ends of the side plates are fixedly connected with the bottom plate, the top plate and the two side plates form a shell structure with two open ends, one end of the shell structure is provided with an operation opening, the other end of the shell structure is provided with a mounting opening, and the box body is arranged outside the valve element through the mounting mask.

Another object of the present application is to provide a tank container comprising a tank and a frame supporting the tank, and a valve protection box as defined in any one of the above, wherein the box is fixedly connected to the tank and the frame.

In one embodiment, the case does not protrude from the surface of the frame, and the lid does not protrude from the surface of the frame when closed.

According to the technical scheme, the application has at least the following advantages and positive effects:

according to the application, the error preventing piece connected with the box cover is arranged, so that the error preventing piece can interfere with the handle part at the non-closing position but does not interfere with the handle part at the closing position along with the movement of the box cover in the process that the box cover rotates relative to the box body to close the operation opening. The valve protection box can close the box cover only when the valve is correctly closed, so that the situation that the box cover is closed when the valve is not closed is avoided, the safety of the tank container in the transportation and use processes is improved, medium leakage is avoided, and potential safety hazards are eliminated.

Drawings

Fig. 1 is a schematic structural view of a tank container according to an embodiment of the present application.

Fig. 2 is a partial schematic view of the valve protecting case of the structure shown in fig. 1 when the cap is opened.

Fig. 3 is a schematic view of the structure shown in fig. 2 as seen from the operation port into the case.

Fig. 4 is a schematic cross-sectional view of A-A in the configuration shown in fig. 3.

Fig. 5 is a schematic cross-sectional view of B-B in the structure shown in fig. 3.

Fig. 6 is a schematic view showing a partial state of the valve protecting case in the structure shown in fig. 1 during closing of the cap.

FIG. 7 is a schematic cross-sectional view of C-C in the configuration shown in FIG. 6.

The reference numerals are explained as follows:

10-tank container;

101-a tank body; 102-a frame; 102 A-A fixed ear;

20-valve member; 201-a handle portion;

30-a valve element protection box;

100-box body;

110-an operation port; 120-guides; 121-a guide hole;

130-a bottom plate; 140-top plate; 150-side plates;

160-mounting port; 170-a second locking hole;

200-box cover; 210-a bolt; 220-a first keyhole;

300-error proofing;

310-a first end; 320-a second end; 330-a bend;

400-limiting parts;

410-a limit seat; 411-limiting holes;

420-a limit rod; 421-card slot.

Detailed Description

Exemplary embodiments that embody features and advantages of the present application will be described in detail in the following description. It will be understood that the application is capable of various modifications in various embodiments, all without departing from the scope of the application, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the application.

In the description of the present application, it should be understood that in the embodiments shown in the drawings, indications of directions or positional relationships (such as up, down, left, right, front, rear, etc.) are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The valve element protecting box 30 of the present application is mainly applied to a can type container to protect the valve element 20 on the can 101, and increase the safety and operability of the can type container in transportation. Referring to fig. 1, a valve element protecting case 30 according to an embodiment of the present application is used for protecting a valve element 20 of a tank container 10. Most of the tank container 10 is loaded with dangerous chemical media, and has the characteristics of inflammability, explosiveness, toxicity, harm, strong corrosion and the like, and the link of the tank container 10 which is most likely to cause leakage is the valve element 20. The valve element 20 can be sealed and protected by the valve element protecting box 30, so that the aim of preventing artificial damage is fulfilled.

The valve element 20 is typically disposed on the tank 101 of the tank container 10, and the valve element 20 includes a loading and unloading valve for unloading the material in the tank 101 or loading the material into the tank 101, a function valve for detecting various data of the tank 101, and the like.

As shown in connection with fig. 2, the valve member 20 is provided with a handle portion 201, the handle portion 201 having a closed position closing the valve member 20. Specifically, the handle portion 201 may be a long handle-like handle, and the handle portion 201 may be rotatable relative to the valve member 20 to switch between a position to open the valve member 20 and a position to close the valve member 20. The valve member 20 can be opened by the handle portion 201 when it is desired to input or output chemical medium from or to the tank 101. And at other times, such as during transport, it is desirable to ensure that the valve member 20 is properly closed to avoid leakage of the medium. The present application provides a valve protection box 30 capable of sealing and protecting the valve 20 after ensuring the valve 20 is properly closed.

Referring to fig. 2 to 4, the valve element protecting case 30 includes a case body 100, a case cover 200, and an error preventing member 300. The case 100 is provided at the valve member 20 of the tank container 10, and the case 100 is provided with an operation port 110. The cover 200 is hinged to one side of the case body 100, and covers the operation opening 110 to open or close the operation opening 110.

The error preventing member 300 has a first end 310 and a second end 320 opposite to each other, the first end 310 being connected to the lid 200, the second end 320 being a free end, and the error preventing member 300 extending from the lid 200 into the case 100. The error preventing member 300 can interfere with the handle portion 201 which is not in the closed position so that the lid 200 cannot be closed, and when the handle portion 201 is in the closed position, the error preventing member 300 does not interfere with the handle portion 201 all the time so that the lid 200 can be closed.

Specifically, referring to fig. 6 and 7, fig. 7 shows a state in which the error preventing member 300 interferes with the handle 201 in the non-closed position during the closing of the cover 200. That is, when the lid 200 is closed, the lid 200 will drive the anti-misoperation member 300 to move towards the inner side of the case body 100, and when the handle 201 is in the non-closing position, the second end 320 of the anti-misoperation member 300 will interfere with the handle 201, so that the lid 200 cannot be closed continuously, thereby avoiding the operator from directly closing the lid 200 when the valve 20 is not closed correctly. The cap 200 can be closed only when the handle portion 201 is in the closed position, i.e. the valve member 20 is properly closed.

The number of the valve element protection boxes 30 of the present application may be the same as the number of the valve elements 20 provided on the can 101. For example, when two valve members 20 are provided on the can 101, two error preventing members 300 may be provided correspondingly, and the two error preventing members 300 are provided on the cap 200 correspondingly to the handle portions 201 of the two valve members 20, respectively.

The manner in which the error preventing member 300 does not always interfere with the handle portion 201 in the closed position may be: the error preventing member 300 moves with the opening and closing of the cap 200, and the movement trace of the error preventing member 300 is always disjointed with the handle 201 in the closed position. That is, when the valve member 20 is properly closed, that is, the handle 201 is in the closed position, the extending direction of the handle 201 may be parallel to the plane along which the movement track of the error preventing member 300 is located, and the two parts are spaced a certain distance apart, so that the two parts cannot interfere with each other, and thus the cap 200 can be closed.

The manner in which the error preventing member 300 can interfere with the handle portion 201 that is not in the closed position may be: the plane of the movement track of the error preventing member 300 can intersect the handle portion 201 which is not in the closed position. That is, when the valve member 20 is not properly closed, that is, the handle 201 is in the non-closed position, the extending direction of the handle 201 may intersect the movement track of the error preventing member 300, that is, the second end 320 of the error preventing member 300 may inevitably contact with the handle 201 to form interference, so as to prevent the lid 200 from being further closed.

In the valve element protecting case 30 according to the embodiment of the present application, by providing the error preventing member 300 connected to the case cover 200, the error preventing member 300 can interfere with the handle 201 in the non-closed position but not interfere with the handle 201 in the closed position when the case cover 200 rotates relative to the case body 100 to close the operation opening 110. Therefore, the valve element protection box 30 of the application can close the box cover 200 only when the valve element 20 is correctly closed, thereby avoiding the situation that the box cover 200 is closed when the valve element 20 is not closed, being beneficial to improving the safety of the tank container 10 in the transportation and use process, avoiding medium leakage and eliminating potential safety hazards.

Referring to fig. 1, in general, a tank container 10 includes a tank 101 and a frame 102 supporting the tank 101, the frame 102 mainly consisting of front and rear end frames and four side members connecting the front and rear end frames. The valve member 20 is typically located on the bottom side of the can 101.

As shown in connection with fig. 4, the case 100 may include a bottom plate 130, a top plate 140, and two side plates 150, and the bottom plate 130 is fixedly coupled to the bottom of the tank container 10. The bottom plate 130 may be welded to the can 101 and the frame 102 and located at a bottom side of the can 101.

The top plate 140 is disposed opposite to the bottom plate 130 with a space therebetween and fixedly coupled to the tank container 10. For example, one side of the top plate 140 may be welded to the can 101 and the other side may be welded to the frame 102.

The two side plates 150 are respectively disposed at two ends of the bottom plate 130, the top end of each side plate 150 is fixedly connected with the top plate 140, and the bottom end is fixedly connected with the bottom plate 130. For example, each side plate 150 may be fixedly coupled to the bottom plate 130 and the top plate 140 using a bolt structure. Alternatively, each side plate 150 may be fixedly connected to the bottom plate 130 and the top plate 140 by caulking.

The bottom plate 130, the top plate 140 and the two side plates 150 form a shell structure with two open ends, wherein one open end is an operation port 110, the other open end is a mounting port 160, and the box body 100 is covered outside the valve element 20 through the mounting port 160. In this example, the cartridge 100 is directly connected to the can 101 through the mounting opening 160 and covers the valve member 20, omitting the side wall opposite to the can 101, and simplifying the structure. The top plate 140 and the bottom plate 130 of the case 100 are respectively located at the upper and lower sides of the valve body 20, and the two side plates 150 are respectively located at the front and rear sides of the valve member 20, so long as the case 100 can completely accommodate the valve member 20.

Preferably, when the box 100 is mounted on the tank container 10, each of its side walls does not protrude from the corresponding surface of the frame 102. For example, after the bottom plate 130 is welded to the can 101 and the frame 102, the bottom plate 130 does not protrude from the bottom surface of the frame 102, or the bottom plate 130 is flush with the bottom surface of the frame 102.

Referring to fig. 4, the top end of the cap 200 may be hinged to the side of the top plate 140 remote from the can 101 as described above. The hinged connection between lid 200 and top panel 140 is achieved, for example, using a hinge.

In addition, the bottom and side edges of the cover 200 may be provided with structures for locking with the frame 102 or the case 100, respectively. For example, a movable latch 210 is disposed at the outer side of the bottom end of the box cover 200, a fixing lug 102a is disposed on the frame 102 corresponding to the latch, and a through hole is disposed on the fixing lug 102 a. When the cover 200 is closed, the latch 210 can be inserted into the through hole to lock the cover 200 and the case 100. Or, the side of the box cover 200 is provided with a first lock hole 220, the box body 100 is correspondingly provided with a second lock hole 170, and the box cover 200 and the box body 100 can be locked when the box cover 200 is closed by sequentially penetrating the first lock hole 220 and the second lock hole 170 through lock pins.

Preferably, the cover 200 may not protrude from the surface of the frame 102 when the cover 200 is closed. For example, the lid 200 can be flush with the surface of the frame 102 or recessed inward relative to the surface of the frame 102 when the lid 200 is closed. A handle may be provided on the cover 200 to facilitate an operator pulling the cover 200 to open the cover 200.

Referring to fig. 4, the error preventing member 300 may be connected to the box cover 200 in the following manner: the first end 310 of the error preventing member 300 is hingedly connected to the cap 200. When the cover 200 is opened or closed, the error preventing member 300 is rotated with respect to the cover 200 by following the cover 200. In detail, the inner side of the box cover 200 may be provided with a hinge seat, the hinge seat is provided with a connection hole, the first end 310 of the error preventing member 300 is provided with a hinge hole, and the first end 310 can be hinged to the box cover 200 by using a bolt to penetrate through the connection hole and the hinge hole.

The guide 120 is provided in the case 100, and the guide 120 has a guide hole 121. For example, in the case where the cartridge 100 is covered outside the valve member 20 provided on the can 101 through the above-mentioned mounting port 160, the guide 120 may be welded to the outer wall of the can 101.

Referring to fig. 3, the guide 120 may be a U-shaped rail, both ends of which are welded to the can 101, and the guide hole 121 is formed between the U-shaped rail and the can 101.

In other embodiments, the guide 120 may have a ring structure welded to the can 101, and a guide hole 121 is formed at the middle thereof.

Preferably, the guide hole 121 is an elongated hole, and the width of the elongated hole is preferably adapted to the width of the error preventing member 300. The error preventing member 300 is inserted into the guide hole 121, and the error preventing member 300 can rotate within a range defined by the guide hole 121. In this example, the error preventing member 300 is suspended on the guide member 120 through the guide hole 121, and since the guide member 120 is fixed to the can 101, the movement track of the error preventing member 300 is also fixed, i.e., the error preventing member 300 always rotates within a small range defined by the guide hole 121 during the rotation of the error preventing member 300 with the cap 200.

By connecting the error preventing member 300 to the box cover 200 in a hinged manner and allowing the error preventing member 300 to pass through the guide hole 121, the error preventing member 300 always moves within a small range defined by the guide 120 during the opening and closing of the box cover 200, thereby effectively shrinking the movement range of the error preventing member 300. For example, when the cover 200 is opened, the error preventing member 300 can be contracted toward the can 101 side under the restriction of the guide 120, so that a larger operation space can be reserved for an operator, and the error preventing member 300 is prevented from interfering with the operator.

Referring to fig. 4, the cap 200 has an opening operation port 110 to a maximum open position, and when the cap 200 is in the open position, the lowest point of the error preventing member 300 is higher than any portion of the handle 201. In this way, when the operator opens the cap 200 to operate the valve element 20, since the lowest part of the error preventing member 300 is higher than any part of the handle portion 201, the handle portion 201 does not touch the error preventing member 300 when the handle portion 201 is rotated to open or close the valve element 20, so that the operator can smoothly rotate the handle portion 201.

Further, the valve protecting case 30 further includes a stopper 400, the stopper 400 being provided between the case body 100 and the cap 200, the stopper 400 being for enabling the cap 200 to be maintained in the open position. Referring to fig. 2 and 5, the limiting member 400 may include a limiting seat 410 and a limiting rod 420, wherein the limiting seat 410 is disposed on the box body 100, and a limiting hole 411 is formed in the limiting seat 410. One end of the limiting rod 420 is hinged on the box cover 200, and the other end of the limiting rod can be arranged in the limiting hole 411 in a penetrating mode and fixed relative to the limiting seat 410.

The limiting seat 410 may be a plate structure, and the limiting hole 411 is disposed on the limiting seat 410 in a penetrating manner. The end of the limiting rod 420 far away from the box cover 200 may be provided with a clamping groove 421, and when the box cover 200 is opened to the open position, the end of the limiting rod 420 may pass through the limiting hole 411 and the clamping groove 421 is clamped on the plate body at the edge of the limiting hole 411, so that the box cover 200 is kept at the open position relative to the box body 100.

In other embodiments, the limiting seat 410 may have a block structure, and the limiting hole 411 formed on the limiting seat 410 is a blind hole. When the cover 200 is opened to the open position, the end of the stopper rod 420 may penetrate and abut into the stopper hole 411, thereby achieving that the cover 200 is maintained in the open position with respect to the case body 100.

Referring to fig. 7, a portion of the error preventing member 300 near the second end 320 is bent toward the operation port 110 side to form a bent portion 330. By providing the bending portion 330, the second end 320 of the error preventing member 300 can be bent toward a side away from the can 101. Therefore, when the error preventing member 300 rotates along with the box cover 200, the second end 320 of the error preventing member 300 will not touch the can 101 all the time, so as to avoid damaging the can 101.

Further, the width of the second end 320 is greater than the width of the curved portion 330. By designing the second end 320 of the error preventing member 300 to have a wider width, the contact area between the error preventing member 300 and the handle 201 can be increased, and the error preventing member 300 and the handle 201 can easily contact each other to interfere with each other when the lid 200 is closed.

The second end 320 may have a width greater than the width of the curved portion 330: the curvature of the side of the curved portion 330 near the operation port 110 is designed to be greater than the curvature of the side far from the operation port 110. The non-uniform curvature of the two sides of the curved portion 330 may allow the width of the error preventing member 300 at the second end 320 to be relatively increased, thereby increasing the contact area between the error preventing member 300 and the handle 201.

In other embodiments, an abutment block may be connected to the second end 320 of the error preventing member 300, so that the width of the second end 320 is larger, for example, the width of the abutment block is larger than the width of the curved portion 330, so that the width of the second end 320 is larger than the width of the curved portion 330.

Alternatively, the second end 320 may be directly designed to be the portion with the largest width of the entire error preventing member 300, so as to increase the contact area between the error preventing member 300 and the handle 201.

Referring to fig. 1, another object of the present application is to provide a tank container 10, which includes a tank 101, a frame 102 supporting the tank 101, and a valve protection box 30 according to any of the above, wherein the box 100 is fixedly connected to the tank 101 and the frame 102. Since the valve element protection box 30 has the above advantages, the tank container 10 including the valve element protection box 30 of any of the embodiments also has corresponding advantages, and will not be described herein.

Wherein, the valve element protecting box 30 is positioned at one side of the bottom of the tank 101 and covers the valve body 20. The case 100 may be welded to the can 101 and the frame 102, and the cover 200 is hinged to the top side of the case 100. With the cap 200 open, the operator can operate the valve member 20. When the cover 200 is closed, the valve element protecting box 30 can seal and protect the valve element 20.

When the box 100 is mounted on the tank container 10, each of its side walls does not protrude from the corresponding surface of the frame 102. For example, after the bottom plate 130 of the case 100 is welded to the can 101 and the frame 102, the bottom plate 130 does not protrude from the bottom surface of the frame 102.

And the cover 200 does not protrude from the surface of the frame 102 when the cover 200 is closed. For example, the lid 200 can be flush with the surface of the frame 102 or recessed inward relative to the surface of the frame 102 when the lid 200 is closed. By designing the valve element protection box 30 so that the side walls of the parts do not protrude from the surface of the frame 102 of the tank container 10 in the closed use state after the installation is completed, the overall appearance consistency of the tank container 10 can be ensured.

The above embodiments are merely illustrative of structures, and the structures in the embodiments are not fixedly matched and combined structures, and in the case of no structural conflict, the structures in the embodiments can be arbitrarily combined for use.

While the application has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A valve element protection case for protecting a valve element of a tank container, the valve element being provided with a handle portion having a closed position closing the valve element, comprising:

the box body is arranged at the valve part of the tank container and is provided with an operation port;

the box cover is hinged to one side edge of the box body, and is arranged at the operation opening in a covering manner so as to be capable of opening or closing the operation opening; and

the error prevention piece is provided with a first end and a second end which are opposite, the first end is connected to the box cover, the second end is a free end, and the error prevention piece extends from the box cover into the box body;

the error preventing piece can interfere with the handle part which is not positioned at the closing position, so that the box cover cannot be closed, and when the handle part is positioned at the closing position, the error preventing piece is not interfered with the handle part all the time, so that the box cover can be closed.

2. The valve element protecting case according to claim 1, wherein the cap has an open position where the operation port is opened to a maximum extent, and when the cap is in the open position, a lowest point of the error preventing member is higher than any portion of the handle portion.

3. The valve protection cartridge of claim 2, further comprising a stop member disposed between the cartridge body and the cap, the stop member adapted to enable the cap to be held in the open position.

4. A valve protection cartridge according to claim 3, wherein said limit member comprises:

the limiting seat is arranged on the box body and provided with a limiting hole; and

and one end of the limiting rod is hinged to the box cover, and the other end of the limiting rod can be arranged in the limiting hole in a penetrating manner and is fixed relative to the limiting seat.

5. The valve element protection cartridge of any one of claims 1 to 4 wherein said first end is hingedly connected to said cartridge cover for rotation therewith;

the box body is internally provided with a guide piece, the guide piece is provided with a guide hole, the error prevention piece is arranged in the guide hole in a penetrating way, and the error prevention piece can rotate in a range limited by the guide hole.

6. The valve element protecting case according to any one of claims 1 to 4, wherein a portion of the error preventing member near the second end is bent toward the operation port side to form a bent portion.

7. The valve protection cartridge of claim 6, wherein a width of said second end is greater than a width of said curved portion.

8. The valve element protection cartridge of any one of claims 1 to 4, wherein the cartridge body comprises:

the bottom plate is fixedly connected to the bottom of the tank container;

the top plate and the bottom plate are oppositely arranged on the tank container at intervals, and the box cover is hinged to the side edge of the top plate; and

the two side plates are respectively arranged at two ends of the bottom plate, the top ends of the side plates are fixedly connected with the top plate, the bottom ends of the side plates are fixedly connected with the bottom plate, the top plate and the two side plates form a shell structure with two open ends, one end of the shell structure is provided with an operation opening, the other end of the shell structure is provided with a mounting opening, and the box body is arranged outside the valve element through the mounting mask.

9. A tank container comprising a tank and a frame supporting the tank, and a valve element protection case according to any one of claims 1 to 8, the case being fixedly connected to the tank and the frame.

10. The tank container of claim 9 wherein the box does not protrude from the surface of the frame and the lid does not protrude from the surface of the frame when closed.