Automatic pushing mechanism for sample pool

Abstract

The present invention discloses an automatic ejection mechanism for a sample pool, which includes a sample pool slot, a sample pool, a limit clamping mechanism, a limit release portion, and an elastic portion. The sample pool slot is a rectangular box with an opening on one side. The sample pool is placed in the sample pool slot. A limit clamping mechanism is installed in the gap between the left and right side plates of the sample pool slot opening and the sample pool. The limit clamping mechanisms on the left and right sides are mirror-symmetrical and are used to limit the sample pool left and right and front and back. The limit release portion corresponds to the limit clamping mechanism and is used to release the limit imposed by the limit clamping mechanism on the sample pool. The elastic portion is fixed to the inner wall of the rear side plate of the sample pool slot. When limiting, the sample pool presses the elastic portion. When limiting, the elastic portion rebounds, and the sample pool is ejected from the sample pool slot. The mechanism has the functional requirements of accurate positioning and limiting, reliable repeated installation, convenient removal, and automatic ejection.

Description

Technical field:

[0001] The invention belongs to the technical field of liquid phase ultraviolet spectrum detection systems, and particularly relates to an automatic ejection mechanism for a sample pool. Background technology:

[0002] The liquid phase ultraviolet spectroscopy detection system is an ultraviolet spectroscopy detection method that uses liquid as the mobile phase. The liquid phase ultraviolet spectroscopy detection system has the following advantages: (1) low noise; (2) small drift; (3) high qualitative and quantitative repeatability; (4) high resolution. The liquid phase sample cell is a key module, responsible for the injection and discharge functions of the mobile phase. It requires high positioning accuracy and needs to be repeatedly taken and installed. To this end, the present invention designs an automatic push-pull installation mechanism for the sample cell with accurate positioning, reliable repeated installation, and easy operation. Summary of the invention:

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and seek to design an automatic ejection mechanism for a sample pool, which has the functional requirements of accurate positioning and limiting, reliable repeated installation, easy removal and automatic ejection.

[0004] In order to achieve the above-mentioned purpose, the present invention relates to an automatic pushing mechanism of a sample pool, including a sample pool slot, a sample pool, a limit clamping mechanism, a limit releasing part and an elastic part. The sample pool slot is a rectangular box with an opening on one side. The sample pool is placed in the sample pool slot. A limit clamping mechanism is installed in the gap between the left and right side plates of the sample pool slot opening and the sample pool. The limit clamping mechanisms on the left and right sides are mirror-symmetrical and are used to limit the sample pool left and right and front and back. The limit releasing part corresponds to the limit clamping mechanism and is used to release the limit of the sample pool by the limit clamping mechanism. The elastic part is fixed on the inner wall of the rear side plate of the sample pool slot. When limiting, the sample pool presses the elastic part tightly. When limiting, the elastic part rebounds, and the sample pool is pushed out of the sample pool slot.

[0005] The lockhole that is formed on the upper end of the lifting link is formed on the upper end of the hinge part, and the hinge part has two ends respectively connected to the hinge part of each end face wall, and the hinge part has two ends respectively connected to the hinge part of each other. The free end of the baffle is inclined downward away from the opening and connected to the middle of the first tension spring, the upper end of the second baffle is fixed to the lower side of the upper limit hole of the first baffle, the free end of the second baffle is inclined downward close to the opening and placed between the spring and the sample pool, the inner wall of the limit release part is connected to the outer wall of the first baffle, for pushing the first baffle to rotate around the pin shaft. When the sample pool is not placed, the lower limit hole and the upper limit hole are coaxial to form a teardrop-shaped positioning hole with a gradually decreasing opening. The free end of the second baffle does not touch the spring. When the sample pool is placed, the fixing part is placed in the teardrop-shaped positioning hole, the elastic clamping part clamps the left and right sides of the sample pool, and the sample pool presses the elastic part. When the sample pool is taken out, the limit release part is pressed, and the limit release part pushes the first baffle to rotate upward around the pin shaft, the upper limit hole is away from the lower limit hole, and the free end of the second baffle pushes the elastic clamping part toward the sample pool slot. The elastic clamping part releases the left and right sides of the sample pool, and under the action of the elastic part, the sample pool is pushed out of the sample pool slot.

[0006] The free end of the second baffle not touching the elastic sheet in the present invention specifically means that there is no interaction force between the free end of the second baffle and the elastic sheet.

[0007] Specifically, the lower portion of the fixing portion channel is gradually tightened upward and connected with the arc-shaped groove at the end of the fixing portion channel to form a lower limit hole.

[0008] Specifically, the automatic pushing mechanism of the sample pool involved in the present invention also includes an upper cover and a second tension spring. A limit release part is fixed on the left and right sides of the lower part of the upper cover respectively. The top plate of the sample pool slot is recessed inward to form a accommodating groove. The front end of the upper cover is placed in the accommodating groove. The fixing holes on the left and right sides of the upper cover are fixed on the pin rotating shaft. The two ends of the second tension spring are respectively fixed on the upper cover and the top plate of the sample pool slot to connect the two.

[0009] Specifically, the elastic part of the present invention includes a compression spring screw, a compression spring sheet and a compression spring, and the bottom of the compression spring is fixed to the inner wall of the rear side plate of the sample cell tank through the compression spring sheet and the compression spring screw.

[0010] Specifically, the upper and lower ends of the vertically placed first tension spring are fixed to the inner wall of the side plate through tension spring pins.

[0011] Specifically, the lower end of the spring sheet is fixed to the lower portion of the inner wall of the side plate by a spring sheet screw.

[0012] Specifically, one end of the second tension spring is fixed to the top plate of the sample pool tank through a tension spring pin, and the other end is hung on a hook provided at the middle position of the inner side of the upper cover.

[0013] Specifically, the first baffle is an L-shaped structure, the end of the short side of the L is fixed to the pin shaft, and the end of the long side of the L is connected to the first tension spring through a hook.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the limit design can automatically calibrate the dimensional tolerance and assembly tolerance of the sample pool, without the need for adjustment, and has high reliability; the positioning holes are coaxially positioned, the internal space is compact, and general processing accuracy is met; repeated clamping and automatic positioning do not require difficult debugging and calibration, with high repeatability and easy operation, thereby reducing labor and maintenance costs; when taking out, the sample pool is automatically pushed out, which is convenient for taking out, improves the user experience, and has low maintenance costs. Description of the drawings:

[0015] Figure 1 It is an exploded structural diagram of the automatic ejection mechanism of the sample pool involved in Example 1.

[0016] Figure 2 This is a front view of the automatic ejection mechanism of the sample cell involved in Example 1.

[0017] Figure 3 yes Figure 2 AA cross-sectional view (pushing the sample cell in).

[0018] Figure 4 It is a right side view of the automatic ejection mechanism of the sample cell involved in Example 1 (the sample cell is not inserted).

[0019] Figure 5 This is a perspective view of the sample cell tank involved in Example 1 (state 1).

[0020] Figure 6 This is a perspective view of the sample cell tank involved in Example 1 (state 2).

[0021] Figure 7 This is a front view of the limit baffle involved in Example 1.

[0022] Among them, the sample pool slot 1, the sample pool 2, the upper cover 3, the spring 4, the limit baffle 5, the spring screw 6, the tension spring pin 7, the first tension spring 8, the pin shaft 9, the compression spring screw 10, the compression spring sheet 11, the compression spring 12, the fixing part 13, the fixing part channel 14, the lower limit hole 15, the elastic clamping part 16, the upper limit hole 17, the first baffle 18, the second baffle 19, the release part 20, the positioning hole 21, the accommodating groove 22, and the second spring 23. Specific implementation method:

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The directional words such as "front", "back", "left", "right", "up", and "down" described in the present invention are to describe the relative relationship between components, and the quantifiers such as "first" and "second" are to distinguish different components and do not constitute a limitation to this application.

[0024] Example 1

[0025] like Figure 1-7 As shown, the automatic sample pool pushing mechanism involved in this embodiment includes a sample pool slot 1, a sample pool 2, a limit clamping mechanism, a limit releasing portion and an elastic portion. The sample pool slot 1 is a rectangular box with an opening on one side. The sample pool 2 is placed in the sample pool slot 1. A limit clamping mechanism is installed in the gap between the left and right side plates of the sample pool slot 1 and the sample pool 2. The limit clamping mechanisms on the left and right sides are mirror-symmetrical and are used to limit the sample pool 2 left and right and front and back. The limit releasing portion corresponds to the limit clamping mechanism and is used to release the limit of the sample pool 2 by the limit clamping mechanism. The elastic portion is fixed on the inner wall of the rear side plate of the sample pool slot 1. When limiting, the sample pool 2 presses the elastic portion. When releasing the limit, the elastic portion rebounds, and the sample pool 2 is pushed out of the sample pool slot 1.

[0026] Specifically, the limiting clamping mechanism involved in this embodiment includes a spring piece 4, a limiting baffle 5, a first tension spring 8, a pin shaft 9, a fixing portion 13 and a fixing portion channel 14. A cylindrical fixing portion 13 is fixed to the outer sides of the light-transmitting holes on the left and right sides of the sample pool 2. A slit connected to the light-transmitting hole is provided on the fixing portion 13. A narrow and long fixing portion channel 14 is provided on the side panels on the left and right sides of the opening of the sample pool slot 1. The lower part of the fixing portion channel 14 is gradually tightened upward and connected to the arc-shaped groove at the end of the fixing portion channel 14 to form a lower limiting hole 15. The fixing portion 13 and the fixing portion The channel 14 corresponds to the fixed portion 13, and the fixed portion 13 moves along the fixed portion channel 14. The vertical first tension spring 8 is fixed to the inner wall of the side plate inside the fixed portion channel 14. The lower end of the spring 4 is fixed to the inner wall of the side plate on the lower side of the fixed portion channel 14. The upper end of the spring 4 is bent toward the sample pool side to form an elastic clamping portion 16. The elastic clamping portion 16 of the spring 4 is tilted upward away from the opening. The limiting baffle 5 includes a first baffle 18 and a second baffle 19. A pin shaft 9 is fixed on the inner wall of the side plate near the opening. The upper through hole of the first baffle 18 is rotatably connected to the pin shaft 9, near the first baffle. An upper limit hole 17 is provided at the lower end of a baffle 18. The free end of the first baffle 18 is tilted downward away from the opening and connected to the middle of the first tension spring 8. The upper end of the second baffle 19 is fixed to the lower side of the upper limit hole 17 of the first baffle 18. The free end of the second baffle 19 is tilted downward close to the opening and placed between the spring 4 and the sample pool 1. The inner wall of the limit release portion 20 is connected to the outer wall of the first baffle 18, which is used to push the first baffle 18 to rotate around the pin shaft 9. When the sample pool 2 is not placed, the centers of the lower limit hole 15 and the upper limit hole 17 coincide (coaxially) to form a gradually decreasing opening. When placing the sample pool 2, the fixing portion 13 is placed in the teardrop-shaped positioning hole 21, and the elastic clamping portion 16 is clamped on the left and right sides of the sample pool 2. The sample pool 2 presses the elastic portion. When taking out the sample pool, the limit release portion 20 is pressed. The limit release portion 20 pushes the first baffle 18 to rotate upward around the pin shaft 9, and the upper limit hole 17 is away from the lower limit hole 15. The free end of the second baffle 19 pushes the elastic clamping portion 16 outward, and the elastic clamping portion 16 is loosened on the left and right sides of the sample pool 2. Under the action of the elastic portion, the sample pool 2 is pushed out of the sample pool slot 1.

[0027] Specifically, the automatic ejection mechanism of the sample pool involved in this embodiment also includes an upper cover 3 and a second tension spring 23. A limit release portion 20 is fixed on the left and right sides of the lower portion of the upper cover 3. The top plate of the sample pool tank 1 is recessed inward to form a receiving groove 22. The front end of the upper cover 3 is placed in the receiving groove 22. The fixing holes on the left and right sides of the upper cover 3 are fixed on the pin shaft 9. The two ends of the second tension spring 23 are respectively fixed to the upper cover 3 and the top plate of the sample pool tank 1 to connect the two. The upper cover 3, which is rotatably connected to the sample pool tank 1, triggers the limit release portions 20 on the left and right sides at the same time. Of course, the limit release portion 20 can also be triggered in other ways.

[0028] Specifically, the elastic part involved in this embodiment includes a compression spring screw 10, a compression spring sheet 11 and a compression spring 12. The bottom of the compression spring 12 is fixed to the inner wall of the rear side plate of the sample cell tank 1 through the compression spring sheet 11 and the compression spring screw 10.

[0029] Specifically, the upper and lower ends of the vertically placed first tension spring 8 are fixed to the inner wall of the side plate through the tension spring pin 7.

[0030] Specifically, the lower end of the spring sheet 4 is fixed to the lower portion of the inner wall of the side panel by a spring sheet screw 6 .

[0031] Specifically, one end of the second tension spring 23 is fixed to the top plate of the sample cell tank 1 through the tension spring pin 7 , and the other end is hung on a hook provided at the middle position of the inner side of the upper cover 3 .

[0032] Specifically, the first baffle 18 is an L-shaped structure, the end of the short side of the L is fixed to the pin shaft 9, and the end of the long side of the L is connected to the first tension spring 8 through a hook.

[0033] The specific use process of the automatic ejection mechanism of the sample pool involved in this embodiment is as follows:

[0034] (1) When the sample pool 2 is not placed in the sample pool tank 1, the limit baffle 5 is in a position under the combined action of gravity, the limit release part 20, the pin shaft 9 and the first tension spring. Figure 5 In the position shown, the upper limit hole 17 and the lower limit hole 15 are coaxial to form a teardrop-shaped positioning hole 21 with a gradually decreasing opening, and the free end of the second baffle 19 does not touch the elastic clamping portion 16 of the spring 4;

[0035] (2) Push the sample pool 2 into the sample pool slot 1 from the opening, and the fixing part 13 moves inward along the fixing part channel 14. When it approaches the upper limit hole 17, the limit baffle 5 is lifted, and the fixing part 13 enters the end of the fixing part channel 14. Under the action of the first tension spring 8, the limit baffle 5 is reset, and the upper limit hole 17 and the lower limit hole 15 are coaxial to form a teardrop-shaped positioning hole 21 with a gradually shrinking opening. The fixing part 13 is embedded in the positioning hole 21 to prevent the sample pool 2 from moving forward and backward, and the compression spring 12 is pressed. The elastic clamping part 16 contacts the left and right outer surfaces of the sample pool to clamp the sample pool to prevent left and right movement;

[0036] (3) Figure 6 As shown, the outer side of the upper cover 3 is pressed, and the outer side of the upper cover 3 flips downward around the pin shaft 9. The limit release portion 20 pushes the first baffle 18 inward, and the first baffle 18 rotates upward around the pin shaft 9. The upper limit hole 17 and the lower limit hole 15 are separated, and the restrictions on the front and rear sides of the sample cell are released. The free end of the second baffle 19 pushes the elastic clamping portion 16 outward (toward the sample cell slot), releasing the restrictions on the left and right sides of the sample cell. The compression spring 12 rebounds and ejects the sample cell.

[0037] (4) Release the upper cover 3, and the limit baffle 5 and the upper cover 3 are reset under the action of their respective tension springs. Figure 5 shown.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 scope of protection of the present invention.

Claims

1. An automatic ejection mechanism for a sample pool, characterized in that: The sample pool comprises a sample pool slot, a sample pool, a limit clamping mechanism, a limit release portion and an elastic portion. The sample pool slot is a rectangular box with an opening on one side. The sample pool is placed in the sample pool slot. A limit clamping mechanism is installed in the gap between the left and right side plates of the sample pool slot opening and the sample pool. The limit clamping mechanisms on the left and right sides are mirror-symmetrical and are used to limit the sample pool left and right and front and back. The limit release portion corresponds to the limit clamping mechanism and is used to release the limit of the sample pool by the limit clamping mechanism. The elastic portion is fixed to the inner wall of the rear side plate of the sample pool slot. When limiting, the sample pool presses the elastic portion tightly. When limiting, the elastic portion rebounds, and the sample pool is pushed out of the sample pool slot. The limit clamping mechanism includes a spring piece, a limit baffle, a first tension spring, a pin shaft, a fixing part and a fixing part channel. A cylindrical fixing part is fixed on the outer sides of the light-transmitting holes on the left and right sides of the sample pool. A slit connected to the light-transmitting hole is provided on the fixing part. A narrow and long fixing part channel is respectively provided on the side plates on the left and right sides of the sample pool slot opening. A lower limit hole is provided at the lower part of the fixing part channel. The fixing part corresponds to the fixing part channel. The fixing part moves along the fixing part channel. The vertical first tension spring is fixed on the inner wall of the side plate on the inner side of the fixing part channel. The lower end of the spring piece is fixed on the inner wall of the side plate on the lower side of the fixing part channel. The upper end of the spring piece is toward the sample pool. The side is bent to form an elastic clamping part, and the elastic clamping part of the spring is inclined upward away from the opening. The limit baffle includes a first baffle and a second baffle. A pin shaft is fixed on the inner wall of the side plate near the opening. The upper through hole of the first baffle is rotatably connected with the pin shaft. An upper limit hole is opened near the lower end of the first baffle. The free end of the first baffle is inclined downward away from the opening and connected to the middle of the first tension spring. The upper end of the second baffle is fixed to the lower side of the upper limit hole of the first baffle. The free end of the second baffle is inclined downward near the opening and is placed between the spring and the sample pool. The inner wall of the limit release part is connected to the outer wall of the first baffle, which is used to push the first baffle around the pin shaft. When the sample pool is not placed, the lower limit hole and the upper limit hole are coaxial to form a teardrop-shaped positioning hole with a gradually decreasing opening. The free end of the second baffle does not touch the spring piece. When the sample pool is placed, the fixing part is placed in the teardrop-shaped positioning hole, and the elastic clamping part is clamped on the left and right sides of the sample pool. The sample pool presses the elastic part. When the sample pool is taken out, the limit release part is pressed, and the limit release part pushes the first baffle to rotate upward around the pin axis, and the upper limit hole moves away from the lower limit hole. The free end of the second baffle pushes the elastic clamping part toward the sample pool slot. The elastic clamping part releases the left and right sides of the sample pool. Under the action of the elastic part, the sample pool is pushed out of the sample pool slot.

2. The automatic ejection mechanism of the sample cell according to claim 1, characterized in that: The lower portion of the fixing portion channel is gradually tightened upward and connected with the arc-shaped groove at the end of the fixing portion channel to form a lower limit hole.

3. The automatic ejection mechanism of the sample cell according to claim 1, characterized in that: It also includes an upper cover and a second tension spring. A limit release part is fixed on the left and right sides of the lower part of the upper cover respectively. The top plate of the sample pool slot is recessed inward to form a accommodating groove. The front end of the upper cover is placed in the accommodating groove. The fixing holes on the left and right sides of the upper cover are fixed on the pin rotating shaft. The two ends of the second tension spring are respectively fixed on the upper cover and the top plate of the sample pool slot.

4. The automatic ejection mechanism of the sample cell according to claim 3, characterized in that: One end of the second tension spring is fixed to the top plate of the sample pool tank through a tension spring pin, and the other end is hung on a hook provided at the middle position of the inner side of the upper cover.

5. The automatic ejection mechanism of the sample cell according to claim 1, characterized in that: The elastic part includes a compression spring screw, a compression spring sheet and a compression spring. The bottom of the compression spring is fixed to the inner wall of the rear side plate of the sample pool tank through the compression spring sheet and the compression spring screw.

6. The automatic ejection mechanism of the sample cell according to claim 1, characterized in that: The upper and lower ends of the vertically placed first tension spring are fixed on the inner wall of the side plate through tension spring pins.

7. The automatic ejection mechanism of the sample cell according to claim 1, characterized in that: The lower end of the shrapnel is fixed to the lower part of the inner wall of the side plate through a shrapnel screw.

8. The automatic ejection mechanism of the sample cell according to claim 1, characterized in that: The first baffle is an L-shaped structure, the end of the short side of the L is fixed to the pin shaft, and the end of the long side of the L is connected to the first tension spring through a hook.

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