Cover and chemical container

Abstract

The utility model discloses a cover, which comprises a cover body, a cover body and a cover cover, and a stepped hole is formed in the middle of the cover body; the connecting part is arranged in the middle of the cover body and comprises a first connecting part and a second connecting part, the first connecting part comprises an upper connecting part and a lower connecting part which are connected, the upper connecting part extends out of the stepped hole and is connected with the second connecting part, the second connecting part abuts against the cover body, and the lower connecting part abuts against the step of the stepped hole; the connector assembly comprises a first liquid pumping connector, a first sampling connector, an air supply connector and an exhaust connector which are arranged at intervals and communicated with the first connecting part, the first liquid pumping connector is connected with a first valve, the first sampling connector is connected with a second valve, the air supply connector is connected with a third valve, and the exhaust connector is connected with a fourth valve. The utility model further discloses a chemical container. Positive pressure protection and back pressure sampling are formed through nitrogen supplementation, harmful gas can be exhausted, and meanwhile the container body can be conveniently detached and replaced under the condition that related pipelines connected with the connector assembly are not detached.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical containers, in particular to a cover and a chemical container. Background Art

[0002] When extracting solvent chemicals in containers, organic solvents are easily volatilized into the environment, causing environmental pollution, and air is easy to enter the container during extraction, resulting in the risk of cross contamination and waste of chemicals. In addition, when removing the lid to replace the container, since the connecting pipes on the lid are connected to the lid as a whole, the connecting pipes move with the lid when the lid is removed, which may cause damage to the pipes. Therefore, when removing the lid and the container, all connecting pipes need to be removed first, which is time-consuming and labor-intensive. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a cover and a chemical container.

[0004] In order to achieve the above purpose, the technical solution provided by an embodiment of the present utility model is as follows:

[0005] A cover comprising:

[0006] A cover body, wherein a step hole is provided in the middle of the cover body;

[0007] A connecting portion is arranged in the middle of the cover body, the connecting portion includes a first connecting portion and a second connecting portion, the first connecting portion includes an upper connecting portion and a lower connecting portion connected to each other, the upper connecting portion extends out of the step hole and is connected to the second connecting portion, the second connecting portion abuts against the cover body, and the lower connecting portion abuts against the step of the step hole;

[0008] A connector assembly, the connector assembly includes a first liquid extraction connector, a first sampling connector, an air supply connector and an exhaust connector which are arranged at intervals and connected to the first connecting part, the first liquid extraction connector is connected to a first valve, the first sampling connector is connected to a second valve, the air supply connector is connected to a third valve, and the exhaust connector is connected to a fourth valve.

[0009] As a further improvement of the present invention, the step hole comprises an upper through hole and a lower through hole which are connected, the aperture of the upper through hole is smaller than the aperture of the lower through hole, and the outer diameter of the upper connecting part is smaller than the outer diameter of the lower connecting part.

[0010] As a further improvement of the present invention, the second connecting portion is threadedly connected to the upper connecting portion.

[0011] As a further improvement of the present invention, the second connecting portion is in a circular ring shape.

[0012] As a further improvement of the utility model, the upper connecting part includes a connected disc part and a cylindrical part, the outer diameter of the disc part is smaller than the outer diameter of the cylindrical part, the outer wall of the disc part is provided with a first thread groove, and the inner wall of the second connecting part is provided with a second thread groove, the first thread groove and the second thread groove cooperate to form a thread groove, and a screw is connected to the thread groove.

[0013] As a further improvement of the utility model, a first sealing ring is provided at the connection between the upper connecting part and the lower connecting part, and a second sealing ring is provided at the step of the step hole.

[0014] As a further improvement of the present utility model, the first valve is connected to a liquid extraction pipeline, the second valve is connected to a sampling pipeline, the third valve is connected to an air supply pipeline, and the fourth valve is connected to an exhaust pipeline.

[0015] As a further improvement of the utility model, the first connecting part is provided with a second liquid extraction joint and a second sampling joint at intervals, the second liquid extraction joint is connected to the first liquid extraction joint, the second liquid extraction joint is connected to a first pipeline, the second sampling joint is connected to the first sampling joint, and the second sampling joint is connected to a second pipeline.

[0016] As a further improvement of the present invention, the first liquid extraction joint, the first sampling joint, the air supply joint and the exhaust joint are all detachable PFA flared joints.

[0017] A chemical container comprises a container body and a cover, wherein the container body has an opening, the cover is threadedly connected to the opening of the container body, and the first liquid extraction connector, the first sampling connector, the gas supply connector and the exhaust connector are all connected to the interior of the container body.

[0018] The beneficial effects of the utility model are:

[0019] (1) The structure is simple and easy to install. The pumping and sampling do not interfere with each other. By supplementing nitrogen during the pumping, positive pressure protection is formed to ensure the cleanliness of the liquid in the container. The nitrogen supplement can also provide power for sampling. Sampling is simple and convenient. There is no need to install a pump body for sampling. There are few restrictions on use and a wide range of uses. The exhaust joint can be used to connect the exhaust duct to remove excess gas mixed with harmful gases to prevent the volatilization of harmful gases and avoid polluting the environment.

[0020] (2) When the cover is connected to or separated from the container body, the joint assembly in the center area of ​​the cover does not need to rotate synchronously with the cover body, which makes it easy to disassemble and replace the container body without removing the related pipes connected to the joint assembly, saving time and effort.

[0021] (3) The second liquid extraction joint is connected to the first pipe, and the second sampling joint is connected to the second pipe and directly inserted into the inner bottom wall of the container body, thereby further preventing air from entering and ensuring the cleanliness of the liquid. At the same time, the liquid can be taken out even when the amount of liquid in the container is small.

[0022] (4) All joints are detachable PFA flared joints, which are convenient for connecting valves and pipeline equipment and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a front view schematic diagram of the cover body and the connecting part matching and the joint assembly being arranged on the cover body in a preferred embodiment of the utility model;

[0025] Figure 2 It is a top view schematic diagram of the cover body and the connecting part matching and the joint assembly being arranged on the cover body in a preferred embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the cover body of the preferred embodiment of the utility model;

[0027] Figure 4 This is a schematic structural diagram of a cover according to a preferred embodiment of the utility model;

[0028] Figure 5 This is a schematic structural diagram of a chemical container formed by the cooperation of a cover and a container body according to a preferred embodiment of the utility model;

[0029] In the figure: 1, cover, 2, cover body, 21, step hole, 210, step, 211, upper through hole, 212, lower through hole, 31, first connecting part, 311, upper connecting part, 3111, disc part, 3112, cylindrical part, 312, lower connecting part, 32, second connecting part, 34, first sealing ring, 35, second sealing ring, 41, first liquid extraction joint, 411, first valve, 412, first liquid extraction pipeline, 42, first sampling joint, 421, second valve, 422, sampling pipeline, 43, air supply joint, 431, third valve, 432, air supply pipeline, 44, exhaust joint, 441, fourth valve, 442, exhaust pipeline, 45, second liquid extraction joint, 451, first pipeline, 46, second sampling joint, 461, second pipeline, 5, container body. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] See also Figure 1-4 , the embodiment of the present application discloses a cover 1, comprising:

[0032] A cover body 2, wherein a step hole 21 is provided in the middle of the cover body 2;

[0033] The connecting portion is arranged in the middle of the cover body 2, and includes a first connecting portion 31 and a second connecting portion 32. The first connecting portion 31 includes an upper connecting portion 311 and a lower connecting portion 312 connected to each other. The upper connecting portion 311 extends out of the step hole 21 and is connected to the second connecting portion 32. The second connecting portion 32 abuts against the cover body 2, and the lower connecting portion 312 abuts against the step 210 of the step hole 21.

[0034] The connector assembly includes a first liquid extraction connector 41, a first sampling connector 42, an air supply connector 43 and an exhaust connector 44 which are arranged at intervals and connected to the first connecting part 31. The first liquid extraction connector 41 is connected to the first valve 411, the first sampling connector 42 is connected to the second valve 421, the air supply connector 43 is connected to the third valve 431, and the exhaust connector 44 is connected to the fourth valve 441.

[0035] Preferably, the step hole 21 includes an upper through hole 211 and a lower through hole 212 that are connected, the aperture of the upper through hole 211 is smaller than the aperture of the lower through hole 212, and the outer diameter of the upper connecting portion 311 is smaller than the outer diameter of the lower connecting portion 312. A step 210 is formed between the upper through hole 211 and the lower through hole 212, and the lower connecting portion 312 is stopped at the step 210.

[0036] In order to facilitate the installation or removal between the connection part and the cover body 2, the second connection part 32 is preferably threadedly connected to the upper connection part 311. When the second connection part 32 is rotated and separated from the upper connection part 311, the cover body 2 can be rotated relative to the upper connection part 311, that is, when the cover body 2 rotates, the upper connection part 311 remains stationary.

[0037] In order to facilitate the rotation of the second connection part 32 and realize connection or separation with the upper connection part 311, the second connection part 32 is preferably in a circular ring shape.

[0038] Preferably, the upper connecting portion 311 includes a connected disc portion 3111 and a cylindrical portion 3112, the outer diameter of the disc portion 3111 is smaller than the outer diameter of the cylindrical portion 3112, the outer wall of the disc portion 3111 is provided with a first thread groove 3113, the inner wall of the second connecting portion 32 is provided with a second thread groove 321, the first thread groove 3113 and the second thread groove 321 cooperate to form a thread groove, and a screw (not shown in the figure) is connected to the thread groove. The provision of the screw can prevent the second connecting portion 32 from being loosened by the threaded connection with the upper connecting portion 311, thereby improving the stability of the connection.

[0039] In order to improve the sealing performance, preferably, a first sealing ring 34 is provided at the connection between the upper connecting portion 311 and the lower connecting portion 312 , and a second sealing ring 35 is provided at the step 210 of the step hole 21 .

[0040] Preferably, the first valve 411 is connected to a liquid extraction pipeline 412, the second valve 421 is connected to a sampling pipeline 422, the third valve 431 is connected to a gas supply pipeline 432, and the fourth valve 441 is connected to an exhaust pipeline 442. The arrangement of the liquid extraction pipeline 412 and the sampling pipeline 422 facilitates the discharge of liquid, the arrangement of the gas supply pipeline 432 facilitates the replenishment of nitrogen, and the arrangement of the exhaust pipeline 442 facilitates the discharge of excess gas mixed with harmful gas.

[0041] Preferably, the first connecting portion 31 is provided with a second liquid extraction joint 45 and a second sampling joint 46 at intervals, the second liquid extraction joint 45 is connected to the first liquid extraction joint 41, the second liquid extraction joint 45 is connected to the first pipe 451, the second sampling joint 46 is connected to the first sampling joint 42, and the second sampling joint 42 is connected to the second pipe 461. When the cover 1 is matched with the container body, the first pipe 451 and the second pipe 461 are both inserted into the inner bottom wall of the container body, which can prevent air from entering the container body, further ensuring the cleanliness of the liquid inside the container body, and at the same time, when the amount of liquid inside the container body is small, the liquid can be taken out, and the sample can be pressed out by air pressure by adding a small amount of nitrogen, which is convenient and quick.

[0042] Specifically, the first liquid extraction joint 41 , the first sampling joint 42 , the gas supply joint 43 and the gas exhaust joint 44 are located at the upper connecting portion 311 , and the second liquid extraction joint 45 and the second sampling joint 46 are located at the lower connecting portion 312 .

[0043] Preferably, the first liquid extraction joint 41, the first sampling joint 42, the air supply joint 43 and the exhaust joint 44 are all detachable PFA flared joints, which respectively realize quick connection or disassembly with the first valve 411, the second valve 421, the third valve 431 and the fourth valve 441. Preferably, the second liquid extraction joint 45 and the second sampling joint 46 are all detachable PFA flared joints, which respectively realize quick connection or disassembly with the first pipeline 451 and the second pipeline 461.

[0044] See also Figure 5 The embodiment of the present application also discloses a chemical container, including a container body 5 and the cover 1 of the above embodiment, the container body 5 has an opening (not shown in the figure), the cover 2 is threadedly connected to the opening of the container body 5, and the first liquid extraction connector 41, the first sampling connector 42, the air supply connector 43 and the exhaust connector 44 are all connected to the interior of the container body 5.

[0045] When the utility model is in use, the first liquid extraction pipeline 41 is connected to the inlet of the power pump, the air supply pipeline 432 is connected to the vaporizer, and the vaporizer is connected to the liquid nitrogen storage tank. The first valve 411, the third valve 431 and the fourth valve 441 are opened, and the second valve 421 is closed, and liquid is extracted from the bottom of the container body 1. At the same time, nitrogen enters the container body 1 through the air supply pipeline 432 for positive pressure protection, and the excess nitrogen gas mixed with harmful gases is discharged through the exhaust joint 34 and the exhaust pipe 442.

[0046] In the non-pumping state, the first valve 411 is closed, and the second valve 421 is opened, and nitrogen enters the container body 1 through the gas supply pipeline 432 and passes through the second sampling connector 46 and the first sampling connector 42 to achieve back pressure sampling.

[0047] When replacing the container body 1, the second connection part 32 is rotated along the upper connection part 311. At this time, the connection part loosens the cover body 2. The cover body 2 of the rotating cover 1 can be separated from the container body 1. At this time, the first liquid extraction pipeline 412, the sampling pipeline 422, the air supply pipeline 432, and the exhaust pipeline 442 can remain connected to the first connection part 31 without disassembly. When installing a new container body, the cover body 21 of the rotating cover 2 is threadedly connected to the opening of the new container body, and the second connection part 32 is screwed on the upper connection part 311.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cover, characterized in that: include: A cover body, wherein a step hole is provided in the middle of the cover body; A connecting portion is arranged in the middle of the cover body, the connecting portion includes a first connecting portion and a second connecting portion, the first connecting portion includes an upper connecting portion and a lower connecting portion connected to each other, the upper connecting portion extends out of the step hole and is connected to the second connecting portion, the second connecting portion abuts against the cover body, and the lower connecting portion abuts against the step of the step hole; A connector assembly, the connector assembly includes a first liquid extraction connector, a first sampling connector, an air supply connector and an exhaust connector which are arranged at intervals and connected to the first connecting part, the first liquid extraction connector is connected to a first valve, the first sampling connector is connected to a second valve, the air supply connector is connected to a third valve, and the exhaust connector is connected to a fourth valve.

2. A cover according to claim 1, characterized in that: The step hole comprises an upper through hole and a lower through hole which are connected to each other. The aperture of the upper through hole is smaller than that of the lower through hole. The outer diameter of the upper connecting portion is smaller than that of the lower connecting portion.

3. A cover according to claim 1, characterized in that: The second connection portion is threadedly connected to the upper connection portion.

4. A cover according to claim 3, characterized in that: The second connecting portion is in a circular ring shape.

5. A cover according to claim 3, characterized in that: The upper connecting part includes a disc part and a cylindrical part connected to each other, the outer diameter of the disc part is smaller than the outer diameter of the cylindrical part, the outer wall of the disc part is provided with a first thread groove, and the inner wall of the second connecting part is provided with a second thread groove, the first thread groove and the second thread groove cooperate to form a thread groove, and a screw is connected to the thread groove.

6. A cover according to claim 1, characterized in that: A first sealing ring is provided at the connection between the upper connecting part and the lower connecting part, and a second sealing ring is provided at the step of the step hole.

7. A cover according to claim 1, characterized in that: The first valve is connected to a liquid extraction pipeline, the second valve is connected to a sampling pipeline, the third valve is connected to an air supply pipeline, and the fourth valve is connected to an exhaust pipeline.

8. A cover according to claim 1, characterized in that: The first connection portion is provided with a second liquid extraction joint and a second sampling joint at intervals. The second liquid extraction joint is connected to the first liquid extraction joint, the second liquid extraction joint is connected to a first pipeline, the second sampling joint is connected to the first sampling joint, and the second sampling joint is connected to a second pipeline.

9. A cover according to claim 1, characterized in that: The first liquid extraction joint, the first sampling joint, the air supply joint and the exhaust joint are all detachable PFA flared joints.

10. A chemical container, characterized in that: It includes a container body and a cover as described in any one of claims 1 to 9, wherein the container body has an opening, the cover is threadedly connected to the opening of the container body, and the first liquid extraction connector, the first sampling connector, the gas supply connector and the exhaust connector are all connected to the interior of the container body.

Images