A manual injection valve reliability testing device

Abstract

The utility model discloses a kind of manual sampling valve reliability testing device, including bottom plate and motor, it is characterized in that, the outside of bottom plate is fixedly connected with two supports, the outside of one of the support is fixedly connected with manual sampling valve, one end of the manual sampling valve is detachably connected with valve extension shaft, the inner wall of the valve extension shaft is slidably connected with clamping post, the outside of the clamping post is equipped with elastic piece one, the inner wall of the valve extension shaft is fixedly connected with elastic piece two, the outside of the valve extension shaft is slidably connected with clamping plate, the drive end of the motor is fixedly connected with concentric shaft coupling. In the utility model, the valve operation of automation is carried out in the mode that manual sampling valve is driven by motor, without manual intervention, can be executed above thousands of times of valve test in succession, greatly reduce test intensity, improve efficiency, and the driving of motor realizes the accurate control of valve force, angle, avoid artificial error, data consistency.

Description

Technical Field

[0001] This utility model relates to the fields of chromatograph technology and injection valve testing technology, and more specifically, to a manual injection valve reliability testing device. Background Technology

[0002] In the field of analytical testing, manual injection valves are key components of analytical instruments such as liquid chromatographs, and their reliability is directly related to the accuracy of test data and the repeatability of experimental results. Currently, the industry still widely uses the traditional method of manually reciprocating the valve stem for reliability testing of manual injection valves. This method has the following drawbacks:

[0003] Manual operation is intensive, inefficient, and difficult to perform long-term, high-frequency cyclic testing. According to the GB / T26792-2011 standard for "Injection Valves for Analytical Instruments," reliability testing requires at least 10,000 cycles of valve switching. Under manual operation, a single person can only complete approximately 800 effective tests per day, and a complete testing cycle for a single device takes 12.5 days. Furthermore, the high-intensity operation easily leads to hand muscle strain, failing to meet the quality inspection requirements of mass production. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a manual injection valve reliability testing device to solve the problem that manual drive cannot achieve precise and high-frequency valve cutting action in the prior art, so as to scientifically determine the reliability of the manual injection valve.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a manual sample injection valve reliability testing device, comprising...

[0006] The base plate and motor are characterized in that two brackets are fixedly connected to the outside of the base plate, one of which is fixedly connected to a manual injection valve. One end of the manual injection valve is detachably connected to a valve extension shaft. A locking post is slidably connected to the inner wall of the valve extension shaft. An elastic element one is sleeved on the outside of the locking post. An elastic element two is fixedly connected to the inner wall of the valve extension shaft. A locking plate is slidably connected to the outside of the valve extension shaft.

[0007] The drive end of the motor is fixedly connected to a concentric coupling, the inner wall of the locking pin is provided with a locking groove, and the end of the elastic element away from the valve extension shaft is fixedly connected to a slider.

[0008] The slider is externally fixedly connected to the outside of the card plate, the card post is externally fixedly connected to a pressure plate, the inner wall of the valve extension shaft is provided with a connecting groove, and the inner wall of the valve extension shaft is provided with a sliding groove.

[0009] The motor is externally fixedly connected to the outside of another bracket, and the end of the locking pin away from the valve extension shaft is locked to the inner wall of the manual injection valve.

[0010] The elastic element is externally fixedly connected to the inner wall of the valve extension shaft, and the clamping plate is externally clamped to the inner wall of the clamping post.

[0011] The card plate is externally engaged with the inner wall of the card slot, and the slider is externally slidably connected to the inner wall of the valve extension shaft.

[0012] One end of the elastic element away from the valve extension axis is fixedly connected to the outside of the pressure plate, and the outside of the slider is slidably connected to the inner wall of the slide groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In the above solution, the cooperation of the elastic element one in the clamping column and the elastic element two in the clamping plate enables quick installation and disassembly between the manual injection valve and the valve extension shaft, improving work efficiency and facilitating subsequent disassembly. The manual injection valve is automatically operated by a motor, eliminating the need for manual intervention and allowing for thousands of valve-cutting tests to be performed continuously, significantly reducing testing intensity and improving efficiency. Furthermore, the motor drive enables precise control of the valve-cutting force and angle, avoiding human error and ensuring data consistency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the support structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the valve extension shaft structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the card post structure of this utility model.

[0019] [Figure Labels]

[0020] 1. Base plate; 2. Bracket; 3. Motor; 4. Concentric coupling; 5. Manual injection valve; 6. Valve extension shaft; 7. Clamping column; 8. Pressure plate; 9. Elastic component one; 10. Slider; 11. Elastic component two; 12. Clamping plate; 13. Clamping groove; 14. Connecting groove; 15. Slide groove. Detailed Implementation

[0021] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0022] Example 1: Please refer to Figures 1 to 4 This utility model provides a technical solution: a manual injection valve reliability testing device, including a base plate 1 and a motor 3. Two brackets 2 are fixedly connected to the outside of the base plate 1. A manual injection valve 5 is fixedly connected to the outside of one of the brackets 2. A valve extension shaft 6 is detachably connected to one end of the manual injection valve 5. A locking post 7 is slidably connected to the inner wall of the valve extension shaft 6. An elastic element 9 is sleeved on the outside of the locking post 7. An elastic element 11 is fixedly connected to the inner wall of the valve extension shaft 6. A locking plate 12 is slidably connected to the outside of the valve extension shaft 6. The motor 3 is fixedly connected to the outside of the other bracket 2. The end of the locking post 7 away from the valve extension shaft 6 is locked to the inner wall of the manual injection valve 5. The elastic element 9 is fixedly connected to the inner wall of the valve extension shaft 6. The locking plate 12 is locked to the inner wall of the locking post 7.

[0023] By integrating a quick-release design for the valve extension shaft 6, the manual injection valve 5 and the valve extension shaft 6 can be installed and disassembled without the aid of any tools. The high-frequency automatic valve cutting operation is achieved by the motor 3, which avoids the arm muscle soreness caused by manual valve cutting and improves work efficiency.

[0024] Example 2: Based on Example 1, in order to achieve efficient valve cutting operation, a concentric coupling 4 is fixedly connected to the drive end of the motor 3, a groove 13 is opened on the inner wall of the locking post 7, a slider 10 is fixedly connected to the end of the elastic element 2 11 away from the valve extension shaft 6, the outside of the locking plate 12 is locked to the inner wall of the groove 13, and the outside of the slider 10 is slidably connected to the inner wall of the valve extension shaft 6.

[0025] When testing the manual injection valve 5, it is usually done manually. However, the high intensity of manual operation can easily lead to hand muscle strain, which cannot meet the quality inspection requirements of mass production. This device replaces manual operation with mechanical transmission, realizing high-frequency and stable valve switching action. At the same time, it can be used with an external data acquisition system to record reliability parameters such as leakage rate and switching time of the injection valve.

[0026] Example 3: Based on Example 2, in order to facilitate the pulling of the locking post 7, the slider 10 is externally fixedly connected to the outside of the locking plate 12, the locking post 7 is externally fixedly connected to the pressure plate 8, the inner wall of the valve extension shaft 6 is provided with a connecting groove 14, the inner wall of the valve extension shaft 6 is provided with a sliding groove 15, the end of the elastic element 9 away from the valve extension shaft 6 is fixedly connected to the outside of the pressure plate 8, and the slider 10 is externally slidably connected to the inner wall of the sliding groove 15.

[0027] The process involves sliding the clamping plate 12 away from the slot 13 in the clamping post 7, then pulling the clamping post 7 to compress the elastic element 9 with the pressure plate 8. Releasing the clamping plate 12 allows it to engage with different slots 13 within the clamping post 7, enabling the manual injection valve 5 to be connected to the valve extension shaft 6. Sliding the clamping plate 12 again causes the elastic element 9 to store potential energy after being compressed by the pressure plate 8. Therefore, by releasing the clamping plate 12 from the slot 13 in the clamping post 7, the clamping post 7 will be engaged with the manual injection valve due to the potential energy of the elastic element 9. The valve 5 is engaged internally, and then the retaining plate 12 is released to lock into the retaining groove 13. This completes the connection between the manual injection valve 5 and the valve extension shaft 6. The manual injection valve 5 is connected by first locking the retaining post 7, then releasing the retaining post 7 to lock into the inside of the manual injection valve 5, and finally locking the retaining post 7. This simple sliding method achieves the locking of the retaining post 7, and the connection and disassembly between the manual injection valve 5 and the valve extension shaft 6 can be achieved without the use of any tools, improving work efficiency and providing convenience for users.

[0028] The working process of this utility model is as follows:

[0029] First, slide the locking plate 12 away from the slot 13 in the locking post 7. Then, pull the locking post 7 to compress the elastic element 9 with the pressure plate 8. Release the locking plate 12 so it engages with different slots 13 in the locking post 7. This connects the manual injection valve 5 to the valve extension shaft 6. Slide the locking plate 12 again. Because the elastic element 9 stores potential energy after being compressed by the pressure plate 8, the locking post 7, under the influence of the potential energy of the elastic element 9, engages with the manual injection valve 5 after the locking plate 12 leaves the slot 13. Release the locking plate 12 so it engages with the slot 13, thus completing the connection between the manual injection valve 5 and the valve extension shaft 6. Locking the locking post 7 first allows the manual injection valve to be connected. The injection valve 5 is connected, and then the retaining post 7 is released to lock inside the manual injection valve 5. Finally, the retaining post 7 is locked. This simple sliding method achieves the locking of the retaining post 7, and the connection and disconnection between the manual injection valve 5 and the valve extension shaft 6 can be achieved without the aid of any tools, improving work efficiency and providing convenience for users. Generally, when testing the manual injection valve 5, it is usually done manually. However, the high-intensity operation under manual operation can easily lead to hand muscle strain, which cannot meet the quality inspection requirements of mass production. This device replaces manual operation with mechanical transmission, realizing high-frequency and stable valve switching action. At the same time, it can be used with an external data acquisition system to record reliability parameters such as leakage rate and switching time of the injection valve.

[0030] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0031] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manual sample injection valve reliability testing device, comprising a base plate (1) and a motor (3), characterized in that, The base plate (1) is externally fixedly connected to two brackets (2), one of which is externally fixedly connected to a manual injection valve (5). One end of the manual injection valve (5) is detachably connected to a valve extension shaft (6). The inner wall of the valve extension shaft (6) is slidably connected to a locking post (7). An elastic element (9) is sleeved on the outside of the locking post (7). An elastic element (11) is fixedly connected to the inner wall of the valve extension shaft (6). A locking plate (12) is slidably connected to the outside of the valve extension shaft (6).

2. The manual sample injection valve reliability testing device according to claim 1, characterized in that, The drive end of the motor (3) is fixedly connected to a concentric coupling (4), the inner wall of the locking post (7) is provided with a locking groove (13), and the end of the elastic element (11) away from the valve extension shaft (6) is fixedly connected to a slider (10).

3. The manual sample injection valve reliability testing device according to claim 2, characterized in that, The slider (10) is fixedly connected to the outside of the card plate (12), the card post (7) is fixedly connected to the outside of the pressure plate (8), the inner wall of the valve extension shaft (6) is provided with a connecting groove (14), and the inner wall of the valve extension shaft (6) is provided with a sliding groove (15).

4. The manual sample injection valve reliability testing device according to claim 1, characterized in that, The motor (3) is externally fixedly connected to the outside of another bracket (2), and the end of the locking pin (7) away from the valve extension shaft (6) is locked to the inner wall of the manual injection valve (5).

5. The manual sample injection valve reliability testing device according to claim 1, characterized in that, The external of the elastic element (9) is fixedly connected to the inner wall of the valve extension shaft (6), and the external of the clamping plate (12) is clamped to the inner wall of the clamping post (7).

6. The manual sample injection valve reliability testing device according to claim 2, characterized in that, The outer part of the card plate (12) is engaged with the inner wall of the card slot (13), and the outer part of the slider (10) is slidably connected to the inner wall of the valve extension shaft (6).

7. The manual sample injection valve reliability testing device according to claim 3, characterized in that, One end of the elastic element (9) away from the valve extension shaft (6) is fixedly connected to the outside of the pressure plate (8), and the outside of the slider (10) is slidably connected to the inner wall of the groove (15).

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