Flow precision test box

Abstract

A precise flow test box comprises a test box body, the test box body is divided into a box cover and a box body, an electronic display screen and three operation buttons are arranged on the box cover, a handle is arranged on one side of the box body, and an external air inlet connector and an exhaust connector are arranged on the other side of the box body; a fixing plate is arranged in the inner wall of the test box body, and a stepping motor is arranged at one end of the fixing plate body. According to the flow precision test box, through the structural design of the stepping motor, the rolling shaft lead screw and the needle cylinder, the stepping motor can drive the rolling shaft on the rolling shaft lead screw to move back and forth on the lead screw, so that the piston is driven to move back and forth, the needle cylinder can perform suction, the device does not need manual operation, and the working efficiency is improved. The purposes of being convenient to carry and use and improving the production efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cotton flow detection devices, in particular to a flow precision test box. Background Art

[0002] The scope of filter cotton is quite broad. The filter cotton (filter mesh) usually refers to air filtration. According to the different materials, filter cotton can be divided into four types: synthetic fiber filter cotton, non-woven filter cotton, glass fiber filter cotton, and activated carbon filter cotton. Therefore, the application range of filter cotton is also very wide. The detection of its product quality directly affects its production efficiency. Therefore, in order to improve product quality requirements and production efficiency and solve production difficulties, a precision test box is designed to facilitate the flow test of gas in the product, thereby achieving rapid quality inspection of its product. The device is easy to carry and easy to use, so it can achieve the purpose of improving product quality requirements and production efficiency. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a flow precision test box.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A flow precision test box, comprising: a test box, the test box is divided into a box cover and a box body, the box cover is provided with an electronic display and three operation buttons, one side of the box body is provided with a handle, and the other side is provided with an external air intake connector and an exhaust connector, the test box is provided with a hasp with a keyhole; a fixing plate is provided in the inner wall of the test box body, one end of the fixing plate body is provided with a stepping motor, a roller screw is provided on the side of the fixing plate body away from the stepping motor, a syringe is provided on the top of the stepping motor, and a switching power supply is provided in the inner wall of the test box body.

[0006] In one embodiment, the electronic display screen and the three operation buttons are arranged on the front of the test box body, and the electronic display screen is located in the center of the front of the box body, and the three operation buttons are equidistantly arranged on the top of the electronic display screen.

[0007] In one embodiment, there are two buckles with keyholes, and the buckle seats are arranged on the box cover of the test box and correspond to the buckles arranged on both sides of the top of the test box body.

[0008] In one embodiment, the external air inlet connector and the exhaust connector are arranged at the top and bottom of the center of the left side of the test box, and the external air inlet connector and the exhaust connector are fixed to the inner wall by fixing bolts on the side close to the inner cavity of the test box.

[0009] In one embodiment, solenoid valves are provided on the heads of the external air inlet connector and the exhaust connector, and the solenoid valves are electrically connected to the operation button.

[0010] In one embodiment, the roller screw and the stepper motor are located on the same horizontal line, the output shaft of the stepper motor is transmission-connected to the screw of the roller screw, and the roller on the roller screw is fixedly connected to the piston of the syringe.

[0011] In one embodiment, hand screws are provided at the four corners of the top of the syringe, and the hand screws are connected to the fixing plate by threads.

[0012] In one embodiment, the capacity of the syringe is ML, and a double-headed valve is provided on the side of the syringe close to the stepper motor, and the double-headed switch valve is respectively connected to the exhaust connector and the external air inlet connector through a hose.

[0013] In one embodiment, a power socket is provided on the left side of the back of the test box body, and the power socket is electrically connected to the switching power supply.

[0014] In one embodiment, the front of the test box is square in shape, and a sealing ring is provided between the box body and the box cover.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] The utility model provides a flow precision test box. The structural design between the stepper motor, the roller screw and the syringe allows the stepper motor to drive the roller on the roller screw to move back and forth on the screw, thereby driving the piston to move back and forth, allowing the syringe to perform suction. At the same time, the external air inlet joint and the exhaust joint are connected to the syringe, so that the product can be connected to the external air inlet joint and the flow rate can be detected by reciprocating suction of the syringe. The design of the power supply and the power socket allows the device to be operated manually without manual operation, thus achieving the purpose of being easy to carry and use and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1This is a schematic diagram of the three-dimensional structure of the flow precision test box of the utility model;

[0019] Figure 2 This is a schematic diagram of the back structure of the flow precision test box of the utility model;

[0020] Figure 3 This is a side structural diagram of the flow precision test box of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the flow precision test box of the utility model;

[0022] Figure 5 This is a schematic diagram of the internal side three-dimensional structure of the flow precision test box of the utility model.

[0023] In the figure: 1. Test box; 11. Electronic display screen; 12. Hasp with keyhole; 13. Handle; 14. Operation button; 15. Power socket; 16. External air inlet connector; 17. Exhaust connector; 2. Fixing plate; 21. Roller screw; 22. Thumb screw; 23. Syringe; 24. Stepper motor; 25. Solenoid valve. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0025] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 cannot be understood as a limitation on this application.

[0026] Unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] like Figure 1-5 As shown, a flow precision test box includes: a test box 1, which is divided into a lid and a body. The lid is provided with an electronic display 11 and three operating buttons 14. A handle 13 is provided on one side of the body, and an external air inlet connector 16 and an exhaust connector 17 are provided on the other side. The test box 1 is provided with a keyhole hasp 12. A fixed plate 2 is provided in the inner wall of the body of the test box 1. A stepper motor 24 is provided at one end of the fixed plate 2. A roller screw 21 is provided on the side of the fixed plate 2 away from the stepper motor 24. A syringe 23 is provided on the top of the stepper motor 24. A switching power supply is provided in the inner wall of the body of the test box 1. It should be noted that the handle 13 is located in the center of the top of the body of the test box 1 and is located in the center of the two keyhole hasps 12.

[0029] like Figure 1-5 As shown, in one embodiment, an electronic display screen 11 and three operating buttons 14 are provided on the front of the test box 1, with the electronic display screen 11 being located in the center of the front of the box, and the three operating buttons 14 being equidistantly provided on top of the electronic display screen 11. It should be noted that the functions of the three operating buttons 14 are start, pause, and emergency stop, respectively.

[0030] like Figure 1-5 As shown, in one embodiment, there are two latches 12 with keyholes, and their latch seats are arranged on the lid of the test box 1 and correspond to the latches arranged on both sides of the top of the test box 1. It should be noted that this design allows the box body and lid of the test box 1 to be opened and closed.

[0031] like Figure 1-5 As shown in the figure, in one embodiment, an external air inlet connector 16 and an exhaust connector 17 are located at the top and bottom of the center of the left side of the test chamber 1. The side of the external air inlet connector 16 and the exhaust connector 17 closest to the inner cavity of the test chamber 1 is fixed to the inner wall by fixing bolts. It should be noted that the external air inlet connector 16 is used to connect to the product to be tested to perform flow testing on the product.

[0032] like Figure 1-5As shown, in one embodiment, a solenoid valve 25 is provided on the head of the external air inlet connector 16 and the exhaust connector 17, and the solenoid valve 25 is electrically connected to the operation button 14. It should be noted that the solenoid valve 25 can control whether the external air inlet connector 16 and the exhaust connector 17 are open.

[0033] like Figure 1-5 As shown in the figure, in one embodiment, the roller screw 21 and the stepper motor 24 are located on the same horizontal line, the output shaft of the stepper motor 24 is drivingly connected to the screw of the roller screw 21, and the roller on the roller screw 21 is fixedly connected to the piston of the syringe 23. It should be noted that this design allows the roller screw 21 to drive the piston of the syringe 23 to move back and forth when in operation, thereby allowing the syringe 23 to perform piston motion.

[0034] like Figure 1-5 As shown in the figure, in one embodiment, thumb screws 22 are provided at the four corners of the top of the syringe 23, and the thumb screws 22 are connected to the fixing plate 2 by threads. It should be noted that there are blocks on both sides of the syringe 23, which fit with the limit blocks on the fixing plate 2 for limiting the stepping motor 24, thereby fixing the syringe 23 on the top of the stepping motor 24.

[0035] like Figure 1-5 As shown in the figure, in one embodiment, the capacity of syringe 23 is 100ml. A double-ended valve is installed on the side of syringe 23 near stepper motor 24. The double-ended on-off valve is connected to exhaust connector 17 and external air inlet connector 16 via flexible pipes. It should be noted that when syringe 23 is drawing air, external air inlet connector 16 is opened, and when it is venting air, exhaust connector 17 is opened, thus achieving a cycle of drawing air and venting air, achieving the purpose of measuring flow rate.

[0036] like Figure 1-5 As shown, in one embodiment, a power socket 15 is provided on the left side of the back of the test box 1 , and the power socket 15 is electrically connected to the switching power supply.

[0037] like Figure 1-5 As shown, in one embodiment, the front of the test box 1 is square in shape, and a sealing ring is provided between the box body and the box cover. It should be noted that this design can ensure the sealing between the box body and the box cover, preventing dust from entering the box and affecting its testing.

[0038] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A flow precision test box, characterized in that: include: A test box (1), the test box (1) is divided into a box cover and a box body, the box cover is provided with an electronic display screen (11) and three operation buttons (14), one side of the box body is provided with a handle (13), and the other side is provided with an external air inlet connector (16) and an exhaust connector (17), and the test box (1) is provided with a hasp (12) with a keyhole; A fixing plate (2) is provided in the inner wall of the test box (1), a stepping motor (24) is provided at one end of the fixing plate (2), a roller screw (21) is provided on the side of the fixing plate (2) away from the stepping motor (24), a syringe (23) is provided on the top of the stepping motor (24), and a switching power supply is provided in the inner wall of the test box (1).

2. A flow precision test box according to claim 1, characterized in that: The electronic display screen (11) and the three operating buttons (14) are arranged on the front of the test box (1), and the electronic display screen (11) is located in the center of the front of the box, while the three operating buttons (14) are arranged at equal distances on the top of the electronic display screen (11).

3. A flow precision test box according to claim 1, characterized in that: There are two buckles (12) with keyholes, and the buckle seats are arranged on the box cover of the test box (1) and correspond to the buckles arranged on both sides of the top of the box body of the test box (1).

4. A flow precision test box according to claim 1, characterized in that: The external air inlet connector (16) and the exhaust connector (17) are arranged at the top and bottom of the center of the left side of the test box (1), and the external air inlet connector (16) and the exhaust connector (17) are fixed to the inner wall of the test box (1) on a side close to the inner cavity of the test box (1) by fixing bolts.

5. A flow precision test box according to claim 1, characterized in that: The external air inlet connector (16) and the exhaust connector (17) are provided with electromagnetic valves (25) on their heads, and the electromagnetic valves (25) are electrically connected to the operating button (14).

6. A flow precision test box according to claim 1, characterized in that: The roller screw (21) and the stepping motor (24) are located on the same horizontal line, the output shaft of the stepping motor (24) is transmission-connected to the screw of the roller screw (21), and the roller on the roller screw (21) is fixedly connected to the piston of the needle cylinder (23).

7. A flow precision test box according to claim 1, characterized in that: The four corners of the top of the syringe (23) are each provided with a hand screw (22), and the hand screw (22) is connected to the fixing plate (2) by a threaded connection.

8. The flow precision test box according to claim 1, characterized in that: The capacity of the syringe (23) is 100ML. A double-headed valve is provided on one side of the syringe (23) close to the stepping motor (24), and the double-headed switch valve is respectively connected to the exhaust connector (17) and the external air inlet connector (16) through a hose.

9. The flow precision test box according to claim 1, characterized in that: A power socket (15) is provided on the left side of the back of the test box (1), and the power socket (15) is electrically connected to a switching power supply.

10. The flow precision test box according to claim 1, characterized in that: The front of the test box (1) is square in shape, and a sealing ring is provided between the box body and the box cover.

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