An exhaust piston for a dispensing syringe

Abstract

This utility model discloses an exhaust piston for a dispensing syringe, comprising a syringe, a first filter plate fixedly connected inside the syringe, a telescopic rod fixedly connected to the top of the first filter plate, a limiting groove formed inside the telescopic rod, a locking block slidably connected inside the limiting groove, and multiple blades fixedly connected to the outside of the telescopic rod. Through this structure, the impact force drives the internal telescopic rod to move, causing the internal locking block to move within the limiting groove, thus causing the telescopic rod to rotate the external blades, pulverizing impurities on the surface of the first filter plate. This breaks large impurities into tiny particles, which can either be discharged with the glue through the filter holes or reduce the clogging area of ​​the filter holes, extending the effective service life of the filter plate and avoiding problems such as sudden reduction in glue output or glue breakage due to clogging.

Description

Technical Field

[0001] This utility model relates to the field of dispensing syringe technology, and in particular to an exhaust piston for dispensing syringes. Background Technology

[0002] The vent piston for dispensing syringes is a key component in dispensing equipment that works in conjunction with the syringe. Its main function is to expel air from the syringe, ensuring a stable output of fluids such as glue during the dispensing process and preventing problems such as inaccurate dispensing volume, glue breakage, or glue dot deformation caused by air bubbles.

[0003] In existing technologies, before dispensing, the air between the glue and the piston in the syringe is expelled by the piston or by a special structural design to prevent air bubbles from entering the glue path and affecting the dispensing accuracy. However, when too many impurities accumulate in some devices, the pores of the filter plate are completely blocked. Some small impurities will be squeezed through the blocked gaps under pressure or bypass the gap between the filter plate and the inner wall of the syringe, losing their filtering effect and eventually entering the needle with the glue, still causing needle blockage or product contamination. Utility Model Content

[0004] The purpose of this invention is to break large impurities into tiny particles. These small particles can either be discharged with the glue through the filter holes or reduce the clogging area of ​​the filter holes, thus extending the effective service life of the filter plate and avoiding problems such as sudden reduction in glue output and glue breakage caused by clogging. This invention provides an exhaust piston for a dispensing syringe, which solves the problems of increased resistance of glue passing through the filter plate, slower glue output, unstable flow, and even intermittent glue breakage, which seriously affect the dispensing accuracy.

[0005] This utility model also provides an exhaust piston for a dispensing syringe, comprising a syringe, a first filter plate fixedly connected inside the syringe, a telescopic rod fixedly connected to the top of the first filter plate, a limiting groove formed inside the telescopic rod, a locking block slidably connected inside the limiting groove, and multiple blades fixedly connected to the outside of the telescopic rod.

[0006] According to the present invention, an exhaust piston for a dispensing syringe is provided, wherein two springs are fixedly connected to the bottom of the first filter plate, and a second filter plate is fixedly connected to the bottom of the springs.

[0007] According to the present invention, an exhaust piston for a dispensing syringe is provided, wherein a push rod is slidably connected inside the syringe, and a baffle is fixedly connected to the top of the syringe.

[0008] According to the present invention, an exhaust piston for a dispensing syringe is provided, wherein a pressing block is fixedly connected to the top of the push rod, and a piston is fixedly connected to one end of the push rod.

[0009] According to the present invention, an exhaust piston for a dispensing syringe is provided, wherein the outside of the piston is slidably connected to the inside of the syringe, and the inside of the syringe is slidably connected to the outside of the second filter plate.

[0010] According to the present invention, an exhaust piston for a dispensing syringe is provided, wherein a toothed ring is rotatably connected to the bottom of the syringe.

[0011] According to the present invention, an exhaust piston for a dispensing syringe is provided, wherein the toothed ring is internally connected to multiple gears.

[0012] According to the present invention, an exhaust piston for a dispensing syringe is provided, wherein the gear is internally threaded with a threaded rod, and the bottom of the gear ring is fixedly connected with a discharge block.

[0013] Beneficial effects:

[0014] 1. This technical solution provides an exhaust piston for a dispensing syringe. Liquid enters the syringe and squeezes the push rod, causing the piston at one end to move. The resulting impact force drives the internal telescopic rod to move. The telescopic rod drives the internal locking block to move within the limiting groove, causing the telescopic rod to rotate the external blade, which crushes impurities on the surface of the first filter plate. This breaks large impurities into small particles. These small particles can either be discharged with the glue through the filter holes or reduce the clogging area of ​​the filter holes, extending the effective service life of the filter plate and avoiding problems such as sudden reduction in glue output and glue breakage caused by clogging.

[0015] 2. By rotating the gear ring at the bottom of the syringe, the internal gears rotate, which drive the internal threaded rod to move inside the syringe, thereby removing the bottom discharge block. This not only facilitates subsequent cleaning and reduces the risk of blockage after the residual colloid hardens, but also prevents the residual colloid from overflowing due to the sudden release of pressure during disassembly, keeping the operating environment clean. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a structural diagram of an exhaust piston for a dispensing syringe according to the present invention;

[0018] Figure 2 This is a schematic diagram of the piston structure of an exhaust piston for a dispensing syringe proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the blade structure of an exhaust piston for a dispensing syringe proposed in this utility model;

[0020] Figure 4This is a schematic diagram of the threaded rod of an exhaust piston for a dispensing syringe proposed in this utility model.

[0021] Legend:

[0022] 1. Syringe; 2. Baffle; 3. Push rod; 4. Pressing block; 5. Piston; 6. First filter plate; 7. Spring; 8. Second filter plate; 9. Gear ring; 10. Telescopic rod; 11. Limiting groove; 12. Locking block; 13. Blade; 14. Discharge block; 15. Gear; 16. Threaded rod. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-4 This utility model provides an exhaust piston for a dispensing syringe, which includes a syringe 1. A first filter plate 6 is fixedly connected inside the syringe 1. A telescopic rod 10 is fixedly connected to the top of the first filter plate 6. A limiting groove 11 is formed inside the telescopic rod 10. A locking block 12 is slidably connected inside the limiting groove 11. Multiple blades 13 are fixedly connected to the outside of the telescopic rod 10.

[0025] Specifically, the impact force drives the internal telescopic rod 10 to move, and the telescopic rod 10 drives the internal locking block 12 to move inside the limiting groove 11, so that the telescopic rod 10 drives the external blade 13 to rotate, crushing the impurities on the surface of the first filter plate 6.

[0026] Two springs 7 are fixedly connected to the bottom of the first filter plate 6, and a second filter plate 8 is fixedly connected to the bottom of the springs 7.

[0027] The syringe 1 has a push rod 3 that slides inside, and a baffle 2 that is fixedly connected to the top of the syringe 1.

[0028] Specifically, the liquid enters the syringe 1 and squeezes the push rod 3, causing the piston 5 at one end to move.

[0029] A pressing block 4 is fixedly connected to the top of the push rod 3, and a piston 5 is fixedly connected to one end of the push rod 3.

[0030] The piston 5 is slidably connected to the outside of the syringe 1, and the inside of the syringe 1 is slidably connected to the outside of the second filter plate 8.

[0031] The bottom of the syringe 1 is rotatably connected to a toothed ring 9.

[0032] The toothed ring 9 has multiple meshing gears 15 inside.

[0033] Specifically, by rotating the gear ring 9 at the bottom of the syringe 1, the internal gear 15 is rotated.

[0034] The gear 15 has an internal threaded connection to a threaded rod 16, and the bottom of the gear ring 9 is fixedly connected to a discharge block 14.

[0035] Specifically, gear 15 drives the internal threaded rod 16 to move inside the syringe 1, thereby removing the bottom discharge block 14.

[0036] Working principle: Liquid enters the syringe 1 and squeezes the push rod 3, causing the piston 5 at one end to move. The resulting impact force drives the internal telescopic rod 10 to move. The telescopic rod 10 drives the internal locking block 12 to move within the limiting groove 11, causing the telescopic rod 10 to drive the external blade 13 to rotate, crushing impurities on the surface of the first filter plate 6. This breaks large impurities into small particles. These small particles can either be discharged with the glue through the filter holes or reduce the clogging area of ​​the filter holes, extending the effective service life of the filter plate and avoiding problems such as sudden reduction in glue output and glue breakage caused by clogging. At the bottom of the syringe 1, by rotating the gear ring 9, the internal gear 15 rotates. The gear 15 drives the internal threaded rod 16 to move inside the syringe 1, thereby removing the bottom discharge block 14. This not only facilitates subsequent cleaning and reduces the risk of clogging after the residual glue solidifies, but also prevents residual glue from overflowing due to sudden pressure release during disassembly, keeping the operating environment clean.

[0037] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A venting piston for a dispensing syringe, comprising a syringe (1), characterized in that: The syringe (1) is fixedly connected to the inside of a first filter plate (6), and a telescopic rod (10) is fixedly connected to the top of the first filter plate (6). A limiting groove (11) is opened inside the telescopic rod (10), and a locking block (12) is slidably connected inside the limiting groove (11). Multiple blades (13) are fixedly connected to the outside of the telescopic rod (10).

2. The venting piston for a dispensing barrel according to claim 1, wherein Two springs (7) are fixedly connected to the bottom of the first filter plate (6), and a second filter plate (8) is fixedly connected to the bottom of the springs (7).

3. The venting piston for a dispensing barrel according to claim 1, wherein The syringe (1) is slidably connected to a push rod (3), and the top of the syringe (1) is fixedly connected to a baffle (2).

4. The venting piston for a dispensing barrel according to claim 3, wherein A pressing block (4) is fixedly connected to the top of the push rod (3), and a piston (5) is fixedly connected to one end of the push rod (3).

5. The exhaust piston for a dispensing needle cylinder according to claim 2 or 4, wherein The piston (5) is slidably connected to the outside of the syringe (1), and the inside of the syringe (1) is slidably connected to the outside of the second filter plate (8).

6. The exhaust piston for a dispensing syringe according to claim 1, characterized in that, The bottom of the syringe (1) is rotatably connected to a toothed ring (9).

7. The venting piston for a dispensing barrel according to claim 6, wherein The toothed ring (9) is internally connected to multiple gears (15).

8. The venting piston for a dispensing barrel according to claim 7, wherein, The gear (15) is internally threaded with a threaded rod (16), and the bottom of the gear ring (9) is fixedly connected with a discharge block (14).

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