Miniature alternating current sampling pump

Abstract

The utility model discloses an alternating current micro sampling pump which comprises a micro sampling pump main body, the micro sampling pump main body comprises a micro pump body, the tail end of the micro pump body is fixedly provided with an alternating current permanent magnet synchronous motor through a bolt, and the bottom end of the front surface of the micro pump body is fixedly provided with an air inlet and an air outlet; by designing a reinforcing anti-falling mechanism, after an air inlet connecting pipe and an air outlet connecting pipe are clamped and mounted at the end parts of an air inlet and an air outlet, an external thread mounting ring is rotated in an internal thread cylinder, and an annular pressing bulge moves downwards to extrude the outer surface of the air inlet connecting pipe and extrude and reinforce the outer surface of the air inlet connecting pipe; and the exhaust connecting pipe is reinforced and mounted again through the same operation, so that loosening and falling are not easily caused when the micro sampling pump body is subjected to tension and pressure during use, the micro sampling pump body is more stably mounted and used, and the reinforced fixity of collecting hoses mounted at an air inlet and an air outlet during collection and use of the micro sampling pump body is improved.

Description

Technical Field

[0001] This utility model belongs to the field of micro sampling pump technology, specifically relating to an AC micro sampling pump. Background Technology

[0002] Existing miniature sampling pumps are used for sampling and collection. They are very small in size and are usually called miniature vacuum pumps. We call any small-volume pump that can generate negative pressure a miniature vacuum pump. They are also convenient to install and can be directly controlled by an AC permanent magnet synchronous motor.

[0003] Existing miniature sampling pumps require the sampling hose to be directly snapped onto the outer surface of the air inlet and outlet during use. However, this snapping installation makes it difficult to secure the hose firmly, causing it to loosen and detach when subjected to air pressure or tension, potentially leading to leaks and reduced sampling efficiency. This compromises the effectiveness of the miniature sampling pump in ensuring the proper fixation of the sampling hose at the air inlet and outlet. Therefore, this invention proposes an AC-powered miniature sampling pump. Utility Model Content

[0004] The purpose of this utility model is to provide an AC micro sampling pump to solve the problem mentioned in the background art that after the air inlet and outlet are fitted with a hose, it is not easy to strengthen the fixed installation, which causes the hose to loosen and fall off when the collected gas is subjected to air pressure, or even causes leakage during collection, thus reducing the sampling effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an AC micro sampling pump, comprising a micro sampling pump body, the micro sampling pump body including a micro pump casing, an AC permanent magnet synchronous motor fixed to the tail end of the micro pump casing by bolts, an air inlet and an exhaust outlet fixedly installed at the bottom end of the front surface of the micro pump casing, and the micro sampling pump body further comprising:

[0006] A reinforcement and anti-detachment mechanism is provided, and the reinforcement and anti-detachment mechanism includes a fixed mounting assembly disposed on the outer surface of the air inlet and the exhaust outlet, wherein a rotary connecting assembly is disposed inside the fixed mounting assembly, and a compression reinforcement assembly is disposed on the inner surface of the rotary connecting assembly;

[0007] The protective mechanism includes a protective component disposed at the end of the rotary connection assembly, wherein a snap-fit ​​mounting component is provided at the connection between the outer surface of the protective component and the interior of the rotary connection assembly.

[0008] Preferably, the fixed mounting assembly includes an internally threaded cylinder fitted onto the outer surfaces of the air inlet and exhaust outlet, the end of the internally threaded cylinder being integrally disposed on a fixing ring, and the fixing ring being fixed to the surface of the micro pump body by screws.

[0009] Preferably, the rotary connection assembly includes an externally threaded mounting ring threaded inside the internally threaded cylinder, and a toggle button is fixed to the end of the externally threaded mounting ring.

[0010] Preferably, the compression reinforcement component includes an annular clamping protrusion integrally disposed on the inner surface of the external threaded mounting ring, and the annular clamping protrusion has an arc-shaped structure.

[0011] Preferably, the protective component includes a protective cover disposed at the end of an externally threaded mounting ring, and a hand-held plate is provided on the end surface of the protective cover.

[0012] Preferably, the engaging mounting assembly includes an elastic protruding ring that is fixedly mounted on the outer surface of the protective cover by screws. The inner surface of the end of the externally threaded mounting ring is provided with an annular groove, and the elastic protruding ring engages with the interior of the annular groove.

[0013] Preferably, the front surface of the micro pump body has two annular grooves, and the inner edge of the annular grooves has an annular groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By designing a reinforced anti-detachment mechanism, after the air inlet and exhaust connecting pipes are engaged and installed at the ends of the air inlet and exhaust outlet, the external threaded mounting ring is rotated inside the internal threaded cylinder, and the annular pressing protrusion moves down to press against the outer surface of the air inlet connecting pipe for reinforcement. The exhaust connecting pipe is reinforced and installed again using the same operation. This makes it less likely to loosen or fall off when subjected to tension and pressure during use, resulting in more stable installation and use. It also improves the stability of the micro sampling pump body when the sampling hoses are installed at the air inlet and exhaust outlet during collection and use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram of section A;

[0018] Figure 3 This is a partial cross-sectional view of the air inlet, internal threaded cylinder, and micro pump body of this utility model.

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram of section B;

[0020] Figure 5 This is a schematic diagram of the protective cover, hand grip, and elastic protruding ring structure of this utility model;

[0021] In the diagram: 100, Miniature sampling pump body; 101, Miniature pump body; 102, AC permanent magnet synchronous motor; 103, Air inlet; 1031, Internal threaded cylinder; 1032, Retaining ring; 1033, External threaded mounting ring; 1034, Toggle button; 1035, Annular clamping protrusion; 104, Exhaust port; 1041, Annular groove one; 1042, Protective cover; 1043, Hand grip; 1044, Elastic protruding ring; 1045, Annular groove two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 5 This utility model provides a technical solution: an AC micro sampling pump, including a micro sampling pump body 100, the micro sampling pump body 100 including a micro pump body 101, an AC permanent magnet synchronous motor 102 fixed to the tail end of the micro pump body 101 by bolts, an air inlet 103 and an exhaust port 104 fixedly installed on the bottom end of the front surface of the micro pump body 101, and the micro sampling pump body 100 is also provided with:

[0024] The reinforcement and anti-detachment mechanism includes a fixed mounting assembly disposed on the outer surface of the air inlet 103 and the exhaust port 104. The fixed mounting assembly is provided with a rotating connection assembly inside, and the inner surface of the rotating connection assembly is provided with a compression reinforcement assembly. When the micro sampling pump body 100 is in use, after the ends of the air inlet 103 and the exhaust port 104 are engaged and installed with hoses, the reinforcement and anti-detachment mechanism reinforces and installs the hoses engaged and installed on the surfaces of the air inlet 103 and the exhaust port 104, making them less likely to loosen and fall off.

[0025] To facilitate rotational adjustment via a fixed mounting assembly, in this embodiment, preferably, the fixed mounting assembly includes an internally threaded cylinder 1031 fitted onto the outer surfaces of the air inlet 103 and the exhaust outlet 104. The end of the internally threaded cylinder 1031 is integrally disposed on a fixing ring 1032, and the fixing ring 1032 is fixed to the surface of the micro pump body 101 by screws. After the internally threaded cylinder 1031 is fixedly installed, the externally threaded mounting ring 1033 can be rotated for reinforcement.

[0026] In order to facilitate the rotation and downward compression of the annular pressing protrusion 1035 by means of the rotary connecting assembly, in this embodiment, preferably, the rotary connecting assembly includes an external thread mounting ring 1033 threadedly connected inside the internal threaded cylinder 1031, and a toggle button 1034 is fixed at the end of the external thread mounting ring 1033, so that the external thread mounting ring 1033 can be rotated and adjusted inside the internal threaded cylinder 1031 by holding the toggle button 1034.

[0027] In order to facilitate the compression and reinforcement of the hose after clamping and installation by means of the compression reinforcement component, in this embodiment, preferably, the compression reinforcement component includes an annular pressing protrusion 1035 integrally disposed on the inner surface of the external thread mounting ring 1033, and the annular pressing protrusion 1035 has an arc-shaped structure, which can drive the annular pressing protrusion 1035 to move down when the external thread mounting ring 1033 is rotated to compress and reinforce the hose on the surface of the air inlet 103 or the exhaust port 104, so as to facilitate the reinforcement installation.

[0028] The protective mechanism includes a protective component disposed at the end of the rotary connection assembly. A snap-fit ​​mounting component is provided at the connection between the outer surface of the protective component and the inner part of the rotary connection assembly. After use, the external threaded mounting ring 1033 of the micro sampling pump body 100 can be rotated into the interior of the internal threaded cylinder 1031. The end of the external threaded mounting ring 1033 is protected by the protective mechanism, which prevents dust and dirt from entering the interior and ensures effective sampling.

[0029] In order to facilitate the end closure protection of the air inlet 103 and the exhaust port 104 through the protective component, in this embodiment, preferably, the protective component includes a protective cover 1042 disposed at the end of the external threaded mounting ring 1033, and a hand grip 1043 is provided on the end surface of the protective cover 1042, so as to facilitate the use of the protective cover 1042 for closure and protection by squeezing the hand grip 1043.

[0030] To facilitate the locking and installation of the protective cover 1042 using the snap-fit ​​mounting assembly, in this embodiment, preferably, the snap-fit ​​mounting assembly includes an elastic protruding ring 1044 fixedly mounted on the outer surface of the protective cover 1042 by screws. The inner surface of the end of the external threaded mounting ring 1033 has an annular groove 1041, and the elastic protruding ring 1044 engages with the interior of the annular groove 1041. After use, the protective cover 1042 can be locked onto the end of the external threaded mounting ring 1033 by the elastic protruding ring 1044 engaging with the interior of the annular groove 1041, thereby facilitating the protection of the air inlet 103 and the exhaust outlet 104 and preventing dust from entering the interior. The front surface of the micro pump body 101 has two annular grooves 1045, and the inner edge of the annular grooves 1045 has an annular groove. During collection, the protective cover 1042 can be removed and locked into the interior of the annular grooves 1045 for fixed placement.

[0031] The AC permanent magnet synchronous motor 102 in this utility model is prior art and will not be described in detail in this application (see the authorized patent application number CN202322572825.8 for a novel AC permanent magnet synchronous motor, which is used with a driver to realize closed-loop active control of speed, torque and position).

[0032] The working principle and usage process of this utility model are as follows: When using this AC micro sampling pump, the air inlet connection pipe for sampling can be snapped onto the outer surface of the air inlet 103, and the exhaust connection pipe can be snapped onto the surface of the exhaust outlet 104. When snapping and installing, the air inlet connection pipe is brought into contact with the sampling position, and the exhaust pipe connected to the end of the exhaust outlet 104 enters the sampling collection tank. The AC permanent magnet synchronous motor 102 is powered on and drives the micro pump body 101 to operate for sampling. It is also convenient to realize active control of the micro sampling pump body 100 through the AC permanent magnet synchronous motor 102, and the sampling rate is 0.5L / min.

[0033] Then, when the micro sampling pump body 100 is used for data collection, the air inlet connecting pipe is engaged and installed on the surface of the air inlet 103. The connecting pipe is inserted through the inside of the external threaded mounting ring 1033 and engaged on the outer surface of the air inlet 103. After engagement and installation, the external threaded mounting ring 1033 is rotated inside the internal threaded cylinder 1031 by the toggle button 1034. When the external threaded mounting ring 1033 rotates and enters, it drives the annular pressing protrusion 1035 to move down and press against the outer surface of the air inlet connecting pipe and reinforce it. The same operation is performed to reinforce and install the exhaust connecting pipe again. This makes it less likely to loosen or fall off when subjected to tension and pressure during use, and makes the installation and use more stable. This improves the reinforcement and fixation of the micro sampling pump body 100 when the data collection hose is installed at the air inlet 103 and the exhaust port 104 during data collection.

[0034] Finally, when the micro sampling pump body 100 is not used after collection and processing, and the hose connecting the ends of the air inlet 103 and the exhaust port 104 is pulled out, the external threaded mounting ring 1033 is fully rotated into the interior of the internal threaded cylinder 1031, the hand grip 1043 is squeezed to take the protective cover 1042, and the protective cover 1042 is embedded into the end of the external threaded mounting ring 1033. The elastic protruding ring 1044 is engaged inside the hand grip 1043 to reinforce and engage the protective cover 1042, thereby fixing and protecting the protective cover 1042 for use. This facilitates the protection of the ends of the air inlet 103 and the exhaust port 104 of the micro sampling pump body 100 after use, making it less likely for dust and dirt to enter the interior, facilitating effective sampling when used again, improving the convenience of protecting the air inlet 103 and the exhaust port 104 of the micro sampling pump body 100 after collection and use, and placing the protective cover 1042 inside the annular groove 1045 after sampling.

[0035] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An AC micro sampling pump, comprising a micro sampling pump body (100), the micro sampling pump body (100) including a micro pump body (101), an AC permanent magnet synchronous motor (102) being bolted to the tail end of the micro pump body (101), and an air inlet (103) and an exhaust port (104) being fixedly installed on the bottom end of the front surface of the micro pump body (101), characterized in that: The main body (100) of the micro sampling pump is also equipped with: A reinforcement and anti-detachment mechanism is provided, and the reinforcement and anti-detachment mechanism includes a fixed mounting assembly disposed on the outer surface of the air inlet (103) and the exhaust port (104), wherein a rotary connection assembly is disposed inside the fixed mounting assembly, and a compression reinforcement assembly is disposed on the inner surface of the rotary connection assembly; The protective mechanism includes a protective component disposed at the end of the rotary connection assembly, wherein a snap-fit ​​mounting component is provided at the connection between the outer surface of the protective component and the interior of the rotary connection assembly.

2. The AC micro sampling pump according to claim 1, characterized in that: The fixed mounting assembly includes an internally threaded cylinder (1031) fitted onto the outer surfaces of the air inlet (103) and the exhaust port (104). The end of the internally threaded cylinder (1031) is integrally disposed on a fixing ring (1032), and the fixing ring (1032) is fixed to the surface of the micro pump body (101) by screws.

3. The AC micro sampling pump according to claim 2, characterized in that: The rotary connection assembly includes an externally threaded mounting ring (1033) threaded inside an internally threaded cylinder (1031), and a toggle button (1034) is fixed to the end of the externally threaded mounting ring (1033).

4. The AC micro sampling pump according to claim 3, characterized in that: The compression reinforcement assembly includes an annular pressing protrusion (1035) integrally disposed on the inner surface of the external threaded mounting ring (1033), and the annular pressing protrusion (1035) has an arc-shaped structure.

5. The AC micro sampling pump according to claim 3, characterized in that: The protective assembly includes a protective cover (1042) disposed at the end of an external threaded mounting ring (1033), and a hand-held plate (1043) is provided on the end surface of the protective cover (1042).

6. The AC micro sampling pump according to claim 5, characterized in that: The engaging mounting assembly includes an elastic protruding ring (1044) that is fixedly mounted on the outer surface of the protective cover (1042) by screws. The inner surface of the end of the external threaded mounting ring (1033) is provided with an annular groove (1041), and the elastic protruding ring (1044) engages with the interior of the annular groove (1041).

7. The AC micro sampling pump according to claim 1, characterized in that: The front surface of the micro pump body (101) has two annular grooves (1045), and the inner edge of the annular grooves (1045) has an annular groove.

Images