Low dead volume gas distribution device

Abstract

The utility model relates to the technical field of gas distribution devices, and discloses a low dead volume gas distribution device which comprises a box body, the right side of the box body is communicated with a connecting pipe, the middle lower part of the inner side of the box body is fixedly connected with a placing plate, the top of the placing plate is fixedly connected with a gas pump, and the output end of the gas pump is communicated with a gas outlet pipe. And the right end of the air outlet pipe sequentially penetrates through the box body and the connecting pipe and is rotationally connected with a hollow box, the input end of the air pump communicates with an air inlet pipe, the left end of the air inlet pipe penetrates through the box body, and the periphery of the hollow box communicates with hollow pipes. According to the utility model, outside new gas is pumped into the connecting pipe through the gas pump, the impeller can rotate along with the flowing of the gas so as to drive the hollow box to rotate, and at the moment, the hollow pipe on the hollow box can rotate along with the hollow box so as to accelerate the flowing speed of the gas in the connecting pipe, so that the new gas can be distributed more uniformly; and gas can quickly enter and exit from the system.

Description

Technical Field

[0001] The utility model relates to the technical field of gas distribution devices, in particular to a low dead volume gas distribution device. Background Art

[0002] Dead volume refers to the volume space in a liquid flow system where liquid cannot flow or be effectively utilized. In applications such as liquid analysis, liquid sensor calibration, and liquid mixing, dead volume may affect the system's response speed, measurement accuracy, and stability.

[0003] In order to measure and control the flow of liquid or gas inside pipes, valves and connectors, a gas distribution device is needed to reduce or eliminate the dead volume in the system and improve system performance.

[0004] Most of the dead volume gas distribution devices currently available on the market measure and control the flow of liquid inside a pipeline by pumping external gas into the pipeline to blow out the liquid or gas in the internal dead volume to reduce the dead volume. However, since the flow rate of the external gas entering the pipeline is fixed, the speed at which the external gas fills the interior of the pipeline is slow, and it is impossible to ensure that the gas can enter and exit the system quickly, thereby reducing the response speed and accuracy of the device and failing to meet the needs of users. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a low dead volume gas distribution device, aiming to improve the problem that the dead volume gas distribution device in the prior art cannot increase the speed at which external gas enters the pipeline, thereby reducing the response speed and accuracy of the device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low dead volume gas distribution device, comprising a box body, a connecting pipe is connected to the right side of the box body, a placement plate is fixedly connected to the middle and lower part of the inner side of the box body, an air pump is fixedly connected to the top of the placement plate, the output end of the air pump is connected to the air outlet pipe, the right end of the air outlet pipe passes through the box body and the connecting pipe in sequence and is rotatably connected to a hollow box, the input end of the air pump is connected to the air inlet pipe, the left end of the air inlet pipe passes through the box body, the hollow box is connected to hollow pipes on all sides, and a plurality of air outlet holes are equidistantly provided on the right sides of the plurality of hollow tubes, a fixing rod is fixedly connected to the middle part of the right side of the hollow box, an impeller is fixedly connected to the middle part of the outer side of the fixing rod, a second electric valve is provided on the outside of the air outlet pipe, and a cleaning mechanism is provided inside the connecting pipe.

[0007] Through the above technical solution, the gas flow rate inside the connecting pipe can be accelerated, so that the new gas can be distributed more evenly, which can ensure that the gas can enter and exit the system quickly, thereby improving the response speed and accuracy of the device.

[0008] As a further description of the above technical solution:

[0009] The cleaning mechanism includes a connecting rod and an arc scraper. The multiple connecting rods are fixedly connected to the left and right sides of the outer wall of the fixed rod. One end of the multiple connecting rods is fixedly connected to one side of the corresponding arc scraper. The top of the connecting pipe is connected to a liquid inlet pipe.

[0010] Through the above technical solution, the impeller will rotate as the fluid enters, and the arc-shaped scraper will rotate along with it to clean the inner wall of the connecting pipe, thereby preventing scale from forming on the inner wall and reducing the durability of the connecting pipe.

[0011] As a further description of the above technical solution:

[0012] The front side of the box body is provided with a box door, and the upper and lower sides of the front end of the box door are provided with hinges. The box door is rotatably connected to the front side of the box body through the hinges, and a groove is opened on the right side of the front end of the box door.

[0013] Through the above technical solution, the box door can be easily opened to inspect and repair its internal components.

[0014] As a further description of the above technical solution:

[0015] The cleaning mechanism further comprises a first electric valve, which is arranged on the outside of the liquid inlet pipe.

[0016] The above technical solution can prevent gas from flowing out of the liquid inlet pipe during subsequent work.

[0017] As a further description of the above technical solution:

[0018] A controller is fixedly connected to the middle of the left side of the box body, and the controller is electrically connected to the first electric valve, the second electric valve and the air pump respectively.

[0019] Through the above technical solution, the operations of the first electric valve, the second electric valve and the air pump can be controlled.

[0020] As a further description of the above technical solution:

[0021] A protective cover is arranged on the outer side of the controller, and one side of the protective cover is rotatably connected to the left side of the box body.

[0022] Through the above technical solution, the controller can be less susceptible to damage, thereby increasing its service life.

[0023] As a further description of the above technical solution:

[0024] The sizes of the plurality of arc-shaped scrapers all match the internal size of the connecting pipe.

[0025] Through the above technical solution, the scraping work can be made more comprehensive.

[0026] As a further description of the above technical solution:

[0027] A plurality of display screens are fixedly connected at equal intervals to the upper middle portion of the front end of the box.

[0028] Through the above technical solution, the change of fluid flow inside the connecting pipe can be conveniently measured and controlled.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the utility model, new gas from the outside is pumped into the connecting pipe through an air pump. At this time, the gas will enter the connecting pipe through the air outlet on the hollow pipe, and the impeller will rotate with the flow of gas, thereby driving the hollow box to rotate. At this time, the hollow tube on the hollow box will rotate accordingly, thereby accelerating the gas flow speed inside the connecting pipe, making the new gas more evenly distributed, ensuring that the gas can quickly enter and exit the system, thereby improving the response speed and accuracy of the device and meeting the needs of users.

[0031] 2. In the utility model, the liquid inlet pipe can be conveniently connected with the external pipeline. When liquid or gas enters the inside of the connecting pipe, the impeller will rotate with the fluid entering. At this time, the arc scraper will rotate to clean the inner wall of the connecting pipe, which can prevent scale from forming on the inner wall and reduce the durability of the connecting pipe, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional diagram of a low dead volume gas distribution device proposed by the utility model;

[0033] Figure 2 This is a structural cross-sectional view of a low dead volume gas distribution device proposed by the utility model;

[0034] Figure 3 The utility model is a partial structural schematic diagram of a low dead volume gas distribution device.

[0035] Legend:

[0036] 1. Box body; 2. Cleaning mechanism; 201. Connecting rod; 202. Curved scraper; 203. Liquid inlet pipe; 204. First electric valve; 3. Connecting pipe; 4. Placement plate; 5. Air pump; 6. Inlet pipe; 7. Outlet pipe; 8. Hollow box; 9. Hollow pipe; 10. Outlet hole; 11. Fixing rod; 12. Impeller; 13. Second electric valve; 14. Box door; 15. Groove; 16. Hinge; 17. Controller; 18. Protective cover; 19. Display screen. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Reference Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment: a low dead volume gas distribution device, including a box body 1, the right side of the box body 1 is connected with a connecting pipe 3, the middle and lower part of the inner side of the box body 1 is fixedly connected with a placement plate 4, the top of the placement plate 4 is fixedly connected with an air pump 5, the output end of the air pump 5 is connected with an air outlet pipe 7, the right end of the air outlet pipe 7 sequentially penetrates the box body 1 and the connecting pipe 3 and is rotatably connected with a hollow box 8, the input end of the air pump 5 is connected with an air inlet pipe 6, the left end of the air inlet pipe 6 penetrates the box body 1, the four sides of the hollow box 8 are connected with hollow tubes 9, and the right sides of the multiple hollow tubes 9 are evenly spaced to open a plurality of air outlet holes 10, the middle part of the right side of the hollow box 8 is fixedly connected with a fixing rod 11, the middle part of the outer side of the fixing rod 11 is fixedly connected with an impeller 12, the outer side of the air outlet pipe 7 is provided with a second electric valve 13, and the inside of the connecting pipe 3 is provided with a cleaning mechanism 2;

[0039] Specifically, first open the second electric valve 13, and then the fresh gas from the outside can be continuously pumped into the hollow box 8 through the air pump 5, and then the fresh gas will enter the connecting pipe 3 through the air outlet 10 on the hollow tube 9. In this process, the impeller 12 plays a key role. As the gas flows, the impeller 12 starts to rotate, thereby driving the hollow box 8 to rotate together. When the hollow box 8 rotates, the hollow tube 9 thereon also rotates. This rotational motion not only speeds up the gas flow speed inside the connecting pipe 3, but also ensures that the new gas is more evenly distributed in the connecting pipe 3. This evenly distributed gas helps to eliminate the dead volume inside the connecting pipe 3, so that gas and liquid can quickly enter and exit the system. Through this design, the device not only improves the response speed and accuracy, but also meets the user's needs for gas processing efficiency.

[0040] Reference Figure 1 , Figure 2 and Figure 3The cleaning mechanism 2 includes a connecting rod 201 and an arc-shaped scraper 202. The multiple connecting rods 201 are respectively fixedly connected to the left and right sides of the outer wall of the fixed rod 11. One end of the multiple connecting rods 201 is respectively fixedly connected to one side of the corresponding arc-shaped scraper 202. The top of the connecting pipe 3 is connected to the liquid inlet pipe 203. The sizes of the multiple arc-shaped scrapers 202 are matched with the internal size of the connecting pipe 3. The cleaning mechanism 2 also includes a first electric valve 204, which is arranged on the outside of the liquid inlet pipe 203.

[0041] Specifically, the impeller 12 rotates continuously during operation, and at the same time, the arc-shaped scraper 202 located outside the impeller 12 also rotates with the rotation of the impeller 12. This unique design enables the arc-shaped scraper 202 to fit closely to the inner wall of the connecting pipe 3 and clean it efficiently. This continuous cleaning process effectively prevents the formation of scale, thereby ensuring that the connecting pipe 3 can maintain its original transmission performance and service life.

[0042] Reference Figure 1 A door 14 is provided at the front side of the box body 1, and hinges 16 are provided at the upper and lower sides of the front end of the door 14. The door 14 is rotatably connected to the front side of the box body 1 through the hinges 16, and a groove 15 is provided at the right side of the front end of the door 14;

[0043] Specifically, the box door 14 can be opened conveniently through the groove 15 to inspect and repair the internal components.

[0044] Reference Figure 1 A controller 17 is fixedly connected to the middle of the left side of the box body 1. The controller 17 is electrically connected to the first electric valve 204, the second electric valve 13 and the air pump 5 respectively. A protective cover 18 is arranged on the outside of the controller 17. One side of the protective cover 18 is rotatably connected to the left side of the box body 1. A plurality of display screens 19 are fixedly connected to the middle and upper part of the front end of the box body 1 at equal intervals.

[0045] Specifically, the operation of the first electric valve 204, the second electric valve 13 and the air pump 5 can be controlled by the controller 17, and the protective cover 18 can protect the controller 17 from being damaged by external factors, and the display screen 19 can conveniently measure and control the changes in the fluid flow inside the connecting pipe 3.

[0046] Working principle: Before using the device, first connect the external pipeline to the liquid inlet pipe 203, then open the first electric valve 204 to perform liquid transfer and distribution work, and then close the first electric valve 204 after the transfer and distribution work is completed, and then open the second electric valve 13, and then use the air pump 5 to draw new external gas into the hollow box 8, and then the gas will enter the connecting pipe 3 through the air outlet 10 on the hollow tube 9. At this time, the impeller 12 will rotate with the flow of gas, thereby driving the hollow box 8 to rotate. At this time, the hollow tube 9 on the hollow box 8 It will rotate along with the impeller 12, thereby speeding up the gas flow rate inside the connecting pipe 3, making the new gas more evenly distributed, and ensuring that the new gas can quickly move the gas and liquid in the dead volume inside the connecting pipe 3 into and out of the system, thereby improving the response speed and accuracy of the device and meeting the needs of users. When the impeller 12 rotates, the arc-shaped scraper 202 on the outside will rotate along with the impeller 12 to clean the inner wall of the connecting pipe 3, thereby preventing scale from forming on the inner wall and reducing the durability of the connecting pipe 3, thereby improving the practicability of the device.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low dead volume gas distribution device, comprising a housing (1), characterized in that: The right side of the box body (1) is connected to a connecting pipe (3), the middle and lower part of the inner side of the box body (1) is fixedly connected to a placement plate (4), the top of the placement plate (4) is fixedly connected to an air pump (5), the output end of the air pump (5) is connected to an air outlet pipe (7), the right end of the air outlet pipe (7) passes through the box body (1) and the connecting pipe (3) in sequence and is rotatably connected to a hollow box (8), the input end of the air pump (5) is connected to an air inlet pipe (6), the left end of the air inlet pipe (6) passes through the box body (1), the four sides of the hollow box (8) are connected to hollow pipes (9), the right sides of the plurality of hollow pipes (9) are evenly spaced with a plurality of air outlet holes (10), the middle part of the right side of the hollow box (8) is fixedly connected to a fixing rod (11), the middle part of the outer side of the fixing rod (11) is fixedly connected to an impeller (12), the outer side of the air outlet pipe (7) is provided with a second electric valve (13), and the interior of the connecting pipe (3) is provided with a cleaning mechanism (2).

2. A low dead volume gas distribution device according to claim 1, characterized in that: The cleaning mechanism (2) comprises a connecting rod (201) and an arc-shaped scraper (202); a plurality of the connecting rods (201) are respectively fixedly connected to the left and right sides of the outer wall of the fixed rod (11); one end of the plurality of the connecting rods (201) is respectively fixedly connected to one side of a corresponding arc-shaped scraper (202); and the top end of the connecting pipe (3) is connected to a liquid inlet pipe (203).

3. A low dead volume gas distribution device according to claim 1, characterized in that: A box door (14) is arranged on the front side of the box body (1), and hinges (16) are arranged on the upper and lower sides of the front end of the box door (14). The box door (14) is rotatably connected to the front side of the box body (1) via the hinges (16), and a groove (15) is arranged on the right side of the front end of the box door (14).

4. A low dead volume gas distribution device according to claim 2, characterized in that: The cleaning mechanism (2) further comprises a first electric valve (204), wherein the first electric valve (204) is arranged outside the liquid inlet pipe (203).

5. A low dead volume gas distribution device according to claim 1, characterized in that: A controller (17) is fixedly connected to the middle portion of the left side of the box body (1), and the controller (17) is electrically connected to the first electric valve (204), the second electric valve (13) and the air pump (5) respectively.

6. A low dead volume gas distribution device according to claim 5, characterized in that: A protective cover (18) is provided on the outside of the controller (17), and one side of the protective cover (18) is rotatably connected to the left side of the box body (1).

7. A low dead volume gas distribution device according to claim 2, characterized in that: The sizes of the plurality of arc-shaped scrapers (202) all match the internal size of the connecting pipe (3).

8. A low dead volume gas distribution device according to claim 1, characterized in that: A plurality of display screens (19) are fixedly connected at equal intervals to the middle and upper portion of the front end of the box body (1).

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