Miniature metering pump for adding catalyst

Abstract

The utility model discloses a micro metering pump for adding a catalyst, which comprises a pump body, and a liquid inlet and outlet assembly is arranged on one side of the pump body; the liquid inlet and outlet assembly comprises a transmission mechanism, bases are arranged at the end, away from the pump body, of the transmission mechanism and located on the upper side and the lower side correspondingly, and a feeding valve and a discharging valve are fixedly connected to the bases correspondingly. The feeding valve comprises a valve body and a fixing structure detachably connected with the valve body. A sealing ring is arranged between the valve body and the end cover, and a baffle ring capable of covering the sealing ring is arranged on the outer side of the end cover. The structural strength of the discharge valve is improved, so that the discharge valve is not easy to loosen and deflect after being used for a long time.

Description

Technical Field

[0001] This utility model relates to the field of metering equipment technology, specifically to a micro metering pump for catalyst addition. Background Technology

[0002] Miniature metering pumps are devices used for the precise delivery and metering of small flow rates of liquids. They are widely used in various fields such as medical, laboratory, chemical, and food industries. Through a precise structure and control system, they can stably output the required flow rate. Miniature metering pumps have advantages such as small size, light weight, high metering accuracy, wide range of applications, and low energy consumption.

[0003] In catalyst addition operations, the use of micro metering pumps enables precise flow control, improving reaction efficiency and product quality. Both the inlet and outlet ends of the metering pump are connected to valve bodies, which are typically threaded onto the outlet end. In practical use, the pressure exerted by the pumped liquid at the outlet end causes the threaded connection of the valve body to loosen under prolonged pressure. Uneven pressure can also cause twisting at the threaded connection, and the exposed gaps in the threaded connection are susceptible to corrosion, affecting structural strength and indicating room for technological improvement. Utility Model Content

[0004] This invention aims to solve the aforementioned technical problem of insufficient structural strength at the valve body connection, and provides a micro metering pump for catalyst addition.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a micro metering pump for catalyst addition, including a pump body, a cylinder on the pump body, a stroke adjustment structure on one side of the pump body, and an inlet / outlet liquid assembly on the other side; the inlet / outlet liquid assembly includes a transmission mechanism, and a base is provided on both the upper and lower sides of the transmission mechanism at the end away from the pump body, and an inlet valve and an outlet valve are respectively fixed on the base;

[0006] The feed valve includes a valve body and a fixed structure detachably connected to the valve body; the fixed structure includes an end cap detachably connected to the valve body, the end cap having annular serrations along its circumferential direction on its underside, and a toothed groove corresponding to the serrations on the inner side of the valve body near its upper end.

[0007] A sealing ring is provided between the valve body and the end cover, and a retaining ring is provided on the outside of the end cover to cover the sealing ring.

[0008] Furthermore, the output and input ends of the feed valve and discharge valve are each provided with a metal tube, which is connected to an external pipeline.

[0009] Furthermore, a base is provided below the pump body, and shock-absorbing pads are provided below the base and near both ends.

[0010] Furthermore, the end cap is provided with a connecting block, the inner side of which is made of alloy material, and the two ends of the connecting block are respectively connected to the end cap and the metal tube body.

[0011] Furthermore, a connecting plate is provided at the upper end of the valve body, and the connecting plate is connected to the end cover by bolts.

[0012] Furthermore, a receiving cavity with an inner diameter smaller than that of the toothed groove is provided inside the valve body and near the lower end, and the inner surface of the sawtooth is connected to the receiving cavity.

[0013] Furthermore, both the feed valve and the discharge valve have metal connecting plates on their outer sides, and the metal connecting plates are welded to the corresponding bases.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] A base is added for welding parts of the feed valve and discharge valve, so that they are fixed to the discharge end of the metering pump and are not easily loosened due to flow impact during long-term use.

[0016] The discharge valve is securely connected to the end cover via a combination of serrated teeth and toothed grooves, as well as multiple bolts. This ensures structural strength while allowing for the removal of the end cover for maintenance of the discharge valve. It not only improves tensile strength but also prevents torsion due to impact. Furthermore, the inner side of the connecting block is made of alloy material, which is impact-resistant and corrosion-resistant.

[0017] It also features a sealing ring to seal the end cap and reduce vibration transmission, which can reduce the phenomenon of bolts gradually loosening due to vibration. Furthermore, the sealing ring is shielded by a retaining ring to prevent aging of the sealing ring due to prolonged exposure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the discharge valve structure of this utility model.

[0020] Figure 3 This is an exploded view of the discharge valve of this utility model.

[0021] Figure 4 This is a schematic diagram of the retaining ring structure of this utility model.

[0022] As shown in the figure: 1. Pump body, 2. Cylinder, 3. Stroke adjustment structure, 4. Transmission mechanism, 5. Discharge valve, 6. Feed valve, 7. Metal tube body, 8. Base, 9. Shock-absorbing pad, 10. Valve body, 11. End cover, 12. Connecting block, 13. Connecting disc, 14. Serrated edge, 15. Toothed groove, 16. Receiving cavity, 17. Sealing ring, 18. Retaining ring, 19. Base. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Example 1, in conjunction with Appendix Figure 1 A micro metering pump for catalyst addition includes a pump body 1, a base 8 below the pump body 1, and shock-absorbing pads 9 below the base 8 and near both ends to reduce noise and vibration transmission; a cylinder 2 is provided on the pump body 1, and a stroke adjustment structure 3 is provided on one side of the pump body 1 and an inlet / outlet liquid assembly is provided on the other side.

[0025] Combined with appendix Figure 1 The inlet and outlet liquid assembly includes a transmission mechanism 4. The transmission mechanism 4 is located at the end away from the pump body 1 and is provided with a base 19 on both the upper and lower sides. A discharge valve 5 and a feed valve 6 are respectively fixed on the base 19. Specifically, a metal connecting plate is provided on the outer side of the end of the feed valve 6 and the discharge valve 5. The metal connecting plate is welded to the corresponding base 19. The welding improves the structural strength of the feed valve 6 and the discharge valve 5, and they are not easy to loosen due to flow impact during long-term use.

[0026] Combined with appendix Figure 2 The feed valve 6 and the discharge valve 5 are equipped with metal pipes 7 at both the output and input ends. The metal pipes 7 are connected to external pipes. In actual use, due to the small fluid volume and limited transmission time of the micro metering pump, the external pipes can be directly and quickly connected through clamps without the need for flange connection.

[0027] Combined with appendix Figure 2 , 3 The discharge valve 5 includes a valve body 10 and a fixed structure detachably connected to the valve body 10. The fixed structure includes an end cap 11 detachably connected to the valve body 10. The end cap 11 has annular serrations 14 on its underside along the circumference. The valve body 10 has a toothed groove 15 corresponding to the serrations 14 on its inner side and near its upper end. The serrations and toothed grooves are matched with the end cap through the cooperation of the serrations and the toothed grooves, as well as multiple bolts, so that the end cap can be removed to maintain the discharge valve while ensuring structural strength. This not only improves the tensile strength but also makes it less prone to torsion due to impact.

[0028] The end cap 11 is also provided with a connecting block 12. The inner side of the connecting block 12 is made of alloy material. The two ends of the connecting block 12 are respectively connected to the end cap 11 and the inside of the metal tube 7, and are fixed to the outside. The inner side of the connecting block 12 is made of alloy material, which is impact-resistant and corrosion-resistant.

[0029] In addition, a receiving cavity 16 with an inner diameter smaller than that of the toothed groove 15 is provided on the inner side of the valve body 10 and near the lower end. The inner side of the serration 14 is connected to the receiving cavity 16 to realize the passage of the valve body 10 and facilitate the operation of internal components.

[0030] In addition, the upper end of the valve body 10 is provided with a connecting plate 13, which is connected to the end cover 11 by bolts. On the basis of ensuring the anti-torsion performance by the serrations 14 and the toothed grooves 15, the tensile strength in the horizontal direction is further improved by bolts.

[0031] Combined with appendix Figure 3 , 4 A sealing ring 17 is provided between the valve body 10 and the end cover 11, and a retaining ring 18 is provided on the outside of the end cover 11 to cover the sealing ring 17. The sealing ring 17 achieves sealing at the end cover 11 and reduces vibration transmission, which can reduce the phenomenon of bolts gradually loosening due to vibration. The retaining ring 18 also shields the sealing ring 17, which can prevent the sealing ring 17 from aging under long-term exposure.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A micro-metering pump for catalyst addition, comprising a pump body (1) provided with a cylinder (2) on the top, a stroke adjusting structure (3) on one side of the pump body (1), and an inlet and outlet liquid assembly on the other side; characterized in that: The inlet and outlet assembly comprises a transmission mechanism (4) which is away from one end of the pump body (1) and is provided with a base (19) on the upper side and the lower side, the base (19) is respectively fixed with an outlet valve (5) and an inlet valve (6); The outlet valve (5) comprises a valve body (10) and a fixing structure which is detachably connected with the valve body (10); the fixing structure comprises an end cover (11) which is detachably connected with the valve body (10), the end cover (11) is provided with an annular sawtooth (14) on the lower surface in the circumferential direction, and the inner side of the valve body (10) and close to the upper end is provided with a tooth-shaped groove (15) corresponding to the sawtooth (14); The valve body (10) and the end cover (11) are provided with a sealing ring (17), and the outer side of the end cover (11) is provided with a blocking ring (18) capable of covering the sealing ring (17).

2. A micro-metering pump for catalyst addition according to claim 1, characterized in that: The output end and the input end of the inlet valve (6) and the outlet valve (5) are provided with a metal pipe body (7), and the metal pipe body (7) is connected with an external pipeline.

3. A micro-metering pump for catalyst addition according to claim 1, characterized in that: The lower surface of the pump body (1) is provided with a base (8), and the lower surface and close to both ends of the base (8) are provided with a shock pad (9).

4. A micro-metering pump for catalyst addition according to claim 2, characterized in that: The end cover (11) is provided with a connecting block (12), the inner side of the connecting block (12) is an alloy material, and the two ends of the connecting block (12) are respectively communicated with the end cover (11) and the metal pipe body (7).

5. A micro-metering pump for catalyst addition according to claim 1, characterized in that: The upper end of the valve body (10) is provided with a connecting disc (13), and the connecting disc (13) is connected with the end cover (11) through bolts.

6. A micro-metering pump for catalyst addition according to claim 5, characterized in that: The inner side of the valve body (10) and close to the lower end is provided with a containing cavity (16) with a smaller inner diameter than the tooth-shaped groove (15), and the inner side surface of the sawtooth (14) is connected with the containing cavity (16).

7. A micro-metering pump for catalyst addition according to claim 1, characterized in that: The outer side of the end of the inlet valve (6) and the outlet valve (5) is provided with a metal connecting plate, and the metal connecting plate is welded with the corresponding base (19).

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