Safety cover for chemical pipeline

Abstract

The utility model discloses a chemical pipeline safety cover, which belongs to the technical field of chemical pipeline safety and comprises an upper cover shell and a lower cover shell, and when the upper cover shell and the lower cover shell are overlapped, a formed circular cavity is used for accommodating a chemical pipeline connector. The upper cover shell and the lower cover shell are fixedly connected with a circular cavity, the locking parts are used for fixing the upper cover shell and the lower cover shell when the upper cover shell and the lower cover shell coincide, a vertical shell is fixedly connected to the lower surface of the lower cover shell, a liquid collecting groove communicated with the circular cavity is formed in the vertical shell, and an elastic telescopic arc-shaped block is arranged at a top end opening of the liquid collecting groove. Through cooperation of the vertical shell, the liquid collecting groove and the arc-shaped block, before the upper cover shell and the lower cover shell are disassembled and opened, chemical liquid received in the circular cavity can be guided into the liquid collecting groove to be recycled and collected in advance, and therefore the situation that in the disassembling and opening process of the upper cover shell and the lower cover shell, the chemical liquid cannot be recycled and collected is avoided. And the chemical liquid received in the circular cavity flows to the body of the maintenance personnel to cause harm.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical pipeline safety, in particular to a safety cover for chemical pipelines. Background Art

[0002] Chemical pipelines are used to transport toxic, harmful, and corrosive chemical substances and are widely used in industries such as medicine, metallurgy, environmental protection, water supply and drainage, and petroleum. With the increasing demand for chemical pipelines, the requirements for their safety are also rising. Among them, as an interface leakage protection device, the safety cover for chemical pipelines plays a crucial role in ensuring the safety of chemical pipelines.

[0003] However, the structure of conventional pipeline safety covers is relatively simple. When maintenance needs to be carried out on the interface, the safety cover needs to be opened. However, these safety covers usually lack an effective mechanism to reliably recover or isolate the chemical liquid that may accumulate inside the cover before opening. Therefore, during the process of opening the safety cover, there is a risk that the chemical liquid will accidentally flow out and splash onto the maintenance personnel, thus causing problems of physical damage to the maintenance personnel. Therefore, in view of this problem, the utility model proposes a safety cover for chemical pipelines. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a safety cover for chemical pipelines that can overcome or at least partially solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A safety cover for chemical pipelines includes an upper cover shell and a lower cover shell. When the upper cover shell and the lower cover shell overlap, a circular cavity is formed for accommodating the connection head of the chemical pipeline, and a plurality of locking parts are used for fixing the upper cover shell and the lower cover shell when they overlap. The lower surface of the lower cover shell is fixedly connected with a vertical shell body. A liquid collecting groove communicating with the circular cavity is opened inside the vertical shell body, and an elastically telescopic arc-shaped block is arranged at the top port of the liquid collecting groove.

[0007] Preferably, the locking part includes a locking screw rod. When the upper cover shell and the lower cover shell overlap, a docking hole matching with the locking screw rod is provided, and a locking nut is threadedly connected to the surface of the locking screw rod.

[0008] Preferably, the surface diameter of the arc-shaped block is adapted to the inner wall diameter of the liquid collecting groove, and a plurality of driving surfaces distributed in a circumferential manner are arranged on the outer contour surface of the locking nut.

[0009] Preferably, a plurality of positioning rods distributed in a circumferential manner are arranged on the left and right side walls of the circular cavity for abutting against the surface of the connection head of the chemical pipeline.

[0010] Preferably, a push rod located inside the liquid collection tank is fixedly connected to the arc-shaped block. One end of the push rod extending below the bottom of the vertical housing is fixed with a limit block, and a spring is sleeved on the surface of the push rod and fixed between the top of the limit block and the bottom of the vertical housing.

[0011] Preferably, a pair of drain pipes are communicated with the vertical housing, and the liquid outlet ends of the drain pipes are threadedly connected with sealing caps.

[0012] Preferably, the two drain pipes are symmetrically located on the left and right sides of the vertical housing respectively, and the drain pipes are arranged obliquely downward.

[0013] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art: In the present utility model, through the coordinated cooperation among the vertical housing, the liquid collection tank and the arc-shaped block, it is to facilitate the chemical liquid received in the circular cavity to be introduced into the liquid collection tank for recycling and collection in advance before the upper cover and the lower cover are disassembled and opened, so as to avoid the problem that the chemical liquid received in the circular cavity flows onto the maintenance personnel during the disassembly and opening process of the upper cover and the lower cover, causing harm. Through such a design, the safety of the safety cover during use is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a connection sectional view of the arc-shaped block and the liquid collection tank of a chemical pipeline safety cover proposed by the present utility model Figure 1 ;

[0015] Figure 2 is a connection side view of the upper cover and the lower cover of a chemical pipeline safety cover proposed by the present utility model;

[0016] Figure 3 is an exploded structural schematic diagram of the connection between the upper cover and the lower cover of a chemical pipeline safety cover proposed by the present utility model;

[0017] Figure 4 is a connection front view of the upper cover and the lower cover of a chemical pipeline safety cover proposed by the present utility model;

[0018] Figure 5 is a top sectional view of the upper cover of a chemical pipeline safety cover proposed by the present utility model;

[0019] Figure 6 is a connection sectional view of the arc-shaped block and the liquid collection tank of a chemical pipeline safety cover proposed by the present utility model Figure 2 。

[0020] In the figure: 1. Upper cover shell; 2. Lower cover shell; 21. Vertical shell; 22. Liquid collecting tank; 23. Arc-shaped block; 24. Drain pipe; 25. Sealing cover; 3. Circular cavity; 31. Positioning rod; 4. Locking part; 41. Locking screw rod; 42. Locking nut; 43. Driving surface; 5. Docking hole; 6. Push rod; 61. Limit block; 62. Spring. Specific embodiments

[0021] The following further describes the present invention in detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it according to the description in the specification.

[0022] It should be understood that terms such as "having", "including", and "comprising" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0023] In the description of the present invention, the orientation or positional relationship indicated by terms such as "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] Example 1: Refer to Figures 1 - 5 , a safety cover for chemical pipelines, including an upper cover shell 1 and a lower cover shell 2. When the upper cover shell 1 and the lower cover shell 2 are hermetically overlapped, a formed circular cavity 3 is provided for accommodating the chemical pipeline connector, and a plurality of locking parts 4 for fixing the upper cover shell 1 and the lower cover shell 2 when they are overlapped. Among them, the locking part 4 includes a locking screw rod 41. When the upper cover shell 1 and the lower cover shell 2 are overlapped, a docking hole 5 matching the locking screw rod 41 is provided. A locking nut 42 is threadedly connected to the surface of the locking screw rod 41. The surface diameter of the arc-shaped block 23 is adapted to the inner wall diameter of the liquid collecting tank 22. A plurality of driving surfaces 43 distributed in a circumferential manner are provided on the outer contour surface of the locking nut 42.

[0025] When in use, first align the lower housing 2 with the middle connection of the two chemical pipelines, and then make the arc-shaped plates extending from both sides of the lower housing 2 respectively fit against the two chemical pipelines. Subsequently, place the upper housing 1 on top of the lower housing 2 to ensure that the top edges of both are completely aligned and fitted, thus forming a closed circular cavity 3 for accommodating the connector at the connection between the two chemical pipelines. Finally, pass the locking nuts 42 through the pre-set docking holes 5 on the upper housing 1 and the lower housing 2 one by one, and rotate the locking nuts 42 so that the locking nuts 42 move downward along the threads of the locking screw rod 41 until the predetermined tightening degree is reached, thereby achieving a firm lock between the upper housing 1 and the lower housing 2 and ensuring the stability and safety of the entire safety cover structure.

[0026] Meanwhile, in order to facilitate the quick positioning and locking when the upper housing 1 and the lower housing 2 overlap, a plurality of circumferentially distributed positioning rods 31 are provided on the left and right side walls of the circular cavity 3. The number of positioning rods 31 on each group of side walls can be four. Ensure that when the upper housing 1 and the lower housing 2 overlap, they can respectively contact the surfaces of the corresponding connectors of the two chemical pipelines through the positioning rods 31 distributed on the left and right side walls of the circular cavity 3, ensuring that when the upper housing 1 and the lower housing 2 overlap and lock, the preset docking holes 5 are prevented from being misaligned, and at the same time, the problem that the upper housing 1 and the lower housing 2 shift on the chemical pipelines after locking is avoided, further improving the stability of the safety cover during use.

[0027] Embodiment 2: On the basis of the above embodiment, referring to Figures 1 - 6 , a vertical housing 21 is fixedly connected to the lower surface of the lower housing 2. A liquid collecting groove 22 communicating with the circular cavity 3 is opened inside the vertical housing 21. An elastic telescopic arc-shaped block 23 is provided at the top port of the liquid collecting groove 22. A push rod 6 located inside the liquid collecting groove 22 is fixedly connected to the arc-shaped block 23. One end of the push rod 6 extending below the bottom of the vertical housing 21 is fixed with a limit block 61. A spring 62 fixed between the top of the limit block 61 and the bottom of the vertical housing 21 is sleeved on the surface of the push rod 6. When in use, just squeeze the spring 62 upward with the hand through the limit block 61, so that the push rod 6 will slowly disengage from the top notch of the liquid collecting groove 22 under the thrust of the limit block 61 until the arc-shaped block 23 fits against the connector between the two chemical pipes. At this time, there is a certain gap between the arc-shaped block 23 and the top port of the liquid collecting groove 22, which can be used to guide the chemical liquid received in the circular cavity 3 into the liquid collecting groove 22 for recycling and collection. After the collection is completed, when the hand is removed from the limit block 61, the limit block 61 can move downward under the elastic reset of the spring 62, driving the arc-shaped block 23 at the top of the push rod 6 to block the top port of the liquid collecting groove 22 again and return to the initial position. Through such a design, it is convenient to avoid the problem that chemical liquid flows onto the maintenance personnel and causes harm when the upper housing 1 and the lower housing 2 are disassembled and opened, further improving the safety of the safety cover during use.

[0028] Meanwhile, to facilitate the centralized treatment and discharge of the chemical liquid collected in the liquid collecting tank 22, a pair of drain pipes 24 are connected to the vertical housing 21. The two drain pipes 24 are symmetrically located on the left and right sides of the vertical housing 21 respectively. The drain pipes 24 are arranged obliquely downward. The liquid outlet end of the drain pipe 24 is threadedly connected with a sealing cap 25. By opening the sealing cap 25, the chemical liquid collected in the liquid collecting tank 22 can be introduced into an external receiving device through the obliquely designed drain pipe 24.

[0029] Finally, it should be added that one or more sides of the vertical housing 21 can be designed to be transparent for the convenience of maintenance personnel to observe the collection of chemical liquid in the liquid collecting tank 22.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A safety cover for a chemical pipeline, comprising: an upper cover shell (1) and a lower cover shell (2); when the upper cover shell (1) coincides with the lower cover shell (2), a circular cavity (3) is formed for accommodating the connection head of the chemical pipeline; and a plurality of locking parts (4) for fixing the upper cover shell (1) and the lower cover shell (2) when they coincide, characterized in that a vertical shell (21) is fixedly connected to the lower surface of the lower cover shell (2), a liquid collecting groove (22) communicating with the circular cavity (3) is formed inside the vertical shell (21), and an elastic telescopic arc-shaped block (23) is arranged at the top port of the liquid collecting groove (22).

2. The safety cover for a chemical pipeline according to claim 1, wherein, The locking part (4) includes a locking screw rod (41). When the upper cover shell (1) coincides with the lower cover shell (2), a docking hole (5) matching with the locking screw rod (41) is provided, and a locking nut (42) is threadedly connected to the surface of the locking screw rod (41).

3. The safety cover for a chemical pipeline according to claim 2, characterized in that, The surface diameter of the arc-shaped block (23) is adapted to the inner wall diameter of the liquid collecting groove (22), and a plurality of driving surfaces (43) distributed in a circumferential manner are arranged on the outer contour surface of the locking nut (42).

4. A safety cover for a chemical pipeline according to claim 1, characterized in that, A plurality of positioning rods (31) distributed in a circumferential manner are arranged on the left and right side walls of the circular cavity (3) for abutting against the surface of the connection head of the chemical pipeline.

5. The safety cover for a chemical pipeline according to claim 1, wherein, A push rod (6) located inside the liquid collecting groove (22) is fixedly connected to the arc-shaped block (23). One end of the push rod (6) extending below the bottom of the vertical shell (21) is fixed with a limit block (61), and a spring (62) fixed between the top of the limit block (61) and the bottom of the vertical shell (21) is sleeved on the surface of the push rod (6).

6. The safety cover for a chemical pipeline according to claim 1, wherein A pair of drain pipes (24) are communicated with the vertical shell (21), and a sealing cover (25) is threadedly connected to the liquid outlet end of the drain pipes (24).

7. The safety cover for a chemical pipeline according to claim 6, wherein, The two drain pipes (24) are symmetrically located on the left and right sides of the vertical shell (21) respectively, and the drain pipes (24) are arranged obliquely downward.

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