Multi-channel pipeline switching device for calibrating draw resistance rod

Abstract

The utility model provides a multi-channel pipeline switching device for calibrating a resistance suction rod. The multi-channel pipeline switching device comprises a resistance suction rod mounting rack, a joint mounting rack and a gas path switching assembly, a plurality of mounting holes are formed in the resistance suction rod mounting rack, and resistance suction rod gas circuit joints are mounted in the mounting holes; a plurality of relay gas circuit connectors are arranged on the connector mounting frame along the same straight line, the connector sides of the relay gas circuit connectors are connected with the gas outlet ends of the resistance suction rod gas circuit connectors in a one-to-one correspondence mode through hoses, and the other sides of the relay gas circuit connectors are embedded in the surface of the connector mounting frame; the gas circuit switching assembly comprises a movement mechanism and a movable connector, one face of the movable connector is provided with a sealing gasket and an air inlet hole, one side of the sealing gasket of the movable connector is in sliding contact with the surface of the air outlet hole of the connector installation frame, and the movable mechanism drives the movable connector to linearly move along the connector installation frame. And the air inlet and the air outlets are aligned one by one, sealed and communicated. According to the device, multi-channel switching of the resistance suction rod can be achieved, and damage to the resistance suction rod due to frequent switching is avoided.

Description

Technical Field

[0001] This utility model relates to the field of tobacco measurement technology, specifically to a multi-channel pipeline switching device for calibrating a suction rod. Background Technology

[0002] A suction resistance standard bar (also known as a suction resistance bar) is a standard instrument used to calibrate testing equipment. It is usually used in groups, so it is necessary to replace the suction resistance bars one by one when using it.

[0003] The drawbar is made of quartz glass, which is a fragile structure and expensive. Due to its low yield rate, it is also difficult to manufacture. Therefore, frequent assembly and disassembly can easily lead to damage to the drawbar, resulting in high costs. How to reduce the damage rate of the drawbar while switching it is the primary problem that needs to be solved by those skilled in the art.

[0004] Patent CN 202322562985.4, entitled "A Portable Multi-channel Gas Detector", provides a method to conduct different measurement gas paths by switching paths, which can avoid frequent disassembly and assembly of each branch gas path to a certain extent. However, when applied to the detection gas path of the suction resistance standard rod, there are certain implementation difficulties.

[0005] First, when connecting the suction resistance standard rod to the air circuit, an air circuit connector is required. Both ends of the air circuit connector need to be connected with a connector structure. Designing an automated structure that can be installed and disassembled by switching is quite difficult. As mentioned in the aforementioned patent, a plug-in connection is used. However, the suction resistance standard rod has high requirements for air tightness, and the sealing control effect of the plug-in method is insufficient.

[0006] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a multi-channel pipeline switching device for calibrating suction rods that enables multi-channel switching of suction rods and avoids damage from frequent switching of suction rods.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a multi-channel pipeline switching device for calibrating a suction rod, comprising a suction rod mounting bracket, a connector mounting bracket, and a gas path switching assembly;

[0009] The suction rod mounting bracket is provided with several mounting holes, and a suction rod air passage connector is installed in the mounting holes. The air inlet end of the suction rod air passage connector is used to insert the suction rod, and the air outlet end of the suction rod air passage connector is located on the same side of the suction rod mounting bracket.

[0010] The connector mounting frame has several relay gas path connectors arranged along the same straight line. The connector side of the relay gas path connector is connected to the air outlet end of the suction rod gas path connector one by one through a hose. The other side of the relay gas path connector is embedded in the surface of the connector mounting frame to form several air outlet holes that do not extend beyond the surface or are flush with the surface of the connector mounting frame.

[0011] The air path switching assembly includes a motion mechanism and a movable joint. One side of the movable joint is provided with a sealing gasket and an air inlet. One side of the sealing gasket of the movable joint slides in contact with the surface of the air outlet of the joint mounting bracket. The motion mechanism drives the movable joint to move linearly along the joint mounting bracket and aligns the air inlet with each air outlet one by one to seal and connect them.

[0012] Based on the above, the suction rod mounting bracket is generally ring-shaped.

[0013] Based on the above, the connector mounting bracket is generally arranged horizontally or vertically, and the air outlet is arranged in a vertical or horizontal straight line.

[0014] Based on the above, the adjacent sides of the suction rod mounting bracket and the connector mounting bracket are used to install the suction rod air circuit connector and the relay air circuit connector, respectively.

[0015] Based on the above, a position detection sensor is provided between the connector mounting bracket and the movable connector to align the air inlet and each air outlet one by one.

[0016] Based on the above, a sealing gasket is provided on the surface of the air outlet of the connector mounting bracket.

[0017] Based on the above, the number of mounting holes is 6-12.

[0018] Based on the above, the motion mechanism is a linear slide, a linear motor, or an electric lead screw mechanism.

[0019] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model has the following advantages:

[0020] 1. The special connectors used to connect the suction rod are mostly large, protruding structures, which are difficult to adapt to sliding connectors for switching. Therefore, this solution adds a relay connector structure, namely a connector mounting bracket. The relay air circuit connector is installed on the connector mounting bracket so that the air outlet of the relay air circuit connector does not protrude from the surface of the connector mounting bracket. Then, the connection of the connectors is achieved by sliding the movable connector with the surface of the connector mounting bracket.

[0021] 2. Due to the application of the above method, the suction rod can be installed in place at once to form a multi-channel structure. When using it, you only need to switch one channel to conduct, which avoids frequent disassembly and assembly of the suction rod, thereby reducing the probability of damage to the suction rod. Attached Figure Description

[0022] Figure 1 This is one of the structural schematic diagrams of the multi-channel pipeline switching device used for calibrating the suction rod in this utility model.

[0023] Figure 2 This is the second schematic diagram of the multi-channel pipeline switching device used for calibrating the suction rod in this utility model.

[0024] Figure 3 This is a schematic diagram of the application status of the multi-channel pipeline switching device used for calibrating the suction rod in this utility model.

[0025] In the diagram: 1. Suction rod mounting bracket; 2. Connector mounting bracket; 3. Air path switching assembly; 4. Suction rod; 11. Suction rod air path connector; 21. Intermediate air path connector; 22. Air outlet; 31. Motion mechanism; 32. Movable connector. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0027] like Figures 1-3 As shown, a multi-channel pipeline switching device for suction rod calibration includes a suction rod mounting bracket 1, a connector mounting bracket 2, and a gas path switching assembly 3.

[0028] The suction rod mounting bracket 1 is provided with a number of mounting holes, the number of which is 6-12. A suction rod air passage connector 11 is installed in the mounting hole. The air inlet end of the suction rod air passage connector 11 is used to insert the suction rod 4. The air outlet end of the suction rod air passage connector 11 is located on the same side of the suction rod mounting bracket. The suction rod air passage connector 11 is a standard connector form defined in the industry standard. Due to its relatively large structure and protrusion on the surface of the suction rod mounting bracket 1, it is difficult to hide the air hole. On the other hand, due to the high connection requirements, it is difficult to configure a prefabricated and adapted movable switching connector form for direct switching.

[0029] The connector mounting frame 2 has several relay gas connectors 21 arranged along the same straight line. The connector side of each relay gas connector 21 is connected to the outlet end of the suction rod gas connector through a hose. The other side of each relay gas connector 21 is embedded in the surface of the connector mounting frame 2 to form several outlet holes 22 that do not extend beyond the surface or are flush with the surface. The relay gas connector 21 is actually the same model or type of gas connector as the suction rod gas connector, with its large protruding end externally for connection with the suction rod gas connector 11 through a hose, and the other end retracted and embedded in the connector mounting frame 2, forming outlet holes 22 on the surface of the connector mounting frame 2.

[0030] The air path switching assembly 3 includes a motion mechanism 31 and a movable connector 32. One side of the movable connector 32 is provided with a sealing gasket and an air inlet. One side of the sealing gasket of the movable connector 32 slides in contact with the surface of the air outlet of the connector mounting bracket 2. The motion mechanism 31 drives the movable connector 32 to move linearly along the connector mounting bracket 2, and aligns the air inlet with each air outlet one by one to seal and connect them.

[0031] In this embodiment, the motion mechanism is an electric lead screw mechanism. In other embodiments, a linear slide or a linear motor may also be used.

[0032] In this embodiment, in order to facilitate the differentiation and installation of the suction rod, the suction rod mounting frame is generally ring-shaped. To facilitate the connection of pipes, the adjacent sides of the suction rod mounting frame and the connector mounting frame are respectively used to install the suction rod air circuit connector and the relay air circuit connector.

[0033] Meanwhile, in order to facilitate switching between different pathways, in this embodiment, the connector mounting bracket 2 is set vertically as a whole, and the air outlets are arranged in a vertical straight line. In other embodiments, it can also be set horizontally, with the air outlets arranged in a horizontal straight line.

[0034] In this embodiment, the positions of the air outlets can be set at relatively equal intervals, and alignment and connection can be achieved one by one by controlling the motion parameters of the motion mechanism. In a preferred embodiment, position detection sensors are correspondingly provided between the connector mounting bracket and the movable connector for aligning the air inlet and each air outlet one by one.

[0035] To further improve the sealing effect, in a preferred embodiment, a sealing gasket is provided on the surface of the air outlet of the connector mounting bracket.

[0036] Based on the above, the number of mounting holes is 6-12.

[0037] Based on the above, the motion mechanism is a linear slide, a linear motor, or an electric lead screw mechanism.

[0038] Working principle explanation:

[0039] First, install a set of suction rods onto each suction rod air connector 11 on the suction rod mounting bracket 1, and then connect the suction rod air structure 11 and the relay air connector 21 with a hose.

[0040] Then, the motion mechanism 31 drives the movable joint 32 to move to the initial position.

[0041] When the test begins, the subsequent test gas path is connected and started. After adjusting the parameters to the appropriate parameters, the motion mechanism 31 is controlled to move. The movable connector 32 is moved to the position of the first air outlet 22 from top to bottom, the gas path is opened, and the test data is observed. After the test is completed, the gas path is cut off, the movable connector 32 is moved to the position of the second air outlet, the gas path is opened again, and the test data is observed. This process is repeated to complete the connection and calibration of each suction resistance standard bar one by one.

[0042] Once everything is complete, disassemble the suction rods and complete the calibration.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A multi-channel tubing switching device for resistance bar calibration, characterized by: Includes suction rod mounting bracket, connector mounting bracket, and air path switching assembly; The suction rod mounting bracket is provided with several mounting holes, and a suction rod air passage connector is installed in the mounting holes. The air inlet end of the suction rod air passage connector is used to insert the suction rod, and the air outlet end of the suction rod air passage connector is located on the same side of the suction rod mounting bracket. The connector mounting frame has several relay gas path connectors arranged along the same straight line. The connector side of the relay gas path connector is connected to the air outlet end of the suction rod gas path connector one by one through a hose. The other side of the relay gas path connector is embedded in the surface of the connector mounting frame to form several air outlet holes that do not extend beyond the surface or are flush with the surface of the connector mounting frame. The air path switching assembly includes a motion mechanism and a movable joint. One side of the movable joint is provided with a sealing gasket and an air inlet. One side of the sealing gasket of the movable joint slides in contact with the surface of the air outlet of the joint mounting bracket. The motion mechanism drives the movable joint to move linearly along the joint mounting bracket and aligns the air inlet with each air outlet one by one to seal and connect them.

2. The multi-channel tubing switching device for resistance bar calibration of claim 1, wherein: The suction rod mounting bracket is circular in shape.

3. The multi-channel tubing switching device for resistance bar calibration according to claim 1 or 2, characterized in that: The connector mounting bracket is arranged horizontally or vertically, and the air vents are arranged in a vertical or horizontal straight line.

4. The multi-channel tubing switching device for resistance bar calibration of claim 1 or 2, wherein: The adjacent sides of the suction rod mounting bracket and the connector mounting bracket are used to install the suction rod air circuit connector and the relay air circuit connector, respectively.

5. The multi-channel tubing switching device for resistance bar calibration of claim 1 or 2, wherein: Position detection sensors are correspondingly installed between the connector mounting bracket and the movable connector to align the air inlet and each air outlet one by one.

6. The multi-channel tubing switching device for resistance bar calibration of claim 1 or 2, wherein: The vent surface of the connector mounting bracket is provided with a sealing gasket.

7. The multi-channel tubing switching device for resistance bar calibration of claim 1, wherein: The number of mounting holes is 6-12.

8. The multi-channel tubing switching device for resistance bar calibration of claim 3, wherein: The motion mechanism is a linear slide, a linear motor, or an electric lead screw mechanism.

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