Multi-channel organic synthesis reagent quantitative addition pump head structure

Abstract

The utility model relates to pump machine technical field discloses multichannel organic synthetic reagent quantitative addition pump head structure, including metering pump main part, pump head and connecting joint, the top end of pump head is installed and goes out liquid pipe, the bottom end of pump head is installed and goes in liquid pipe, goes in liquid pipe pipe outer wall lower extreme to set up the sealing washer, the first internal thread cylinder is connected with the outer wall of liquid pipe, the first internal thread cylinder bottom fixedly connected has the cone type fastening ring strip, the outer wall of liquid pipe pipe is close to the sealing washer upper end fixedly connected and has the connecting ring, the connecting ring top fixedly connected has the external thread ring, the external thread ring top all set up has the opening, the top of connecting joint is embedded and has the import ring pipe of caliber with the caliber of going in liquid pipe matching, the top of import ring pipe fixedly connected has with the second internal thread cylinder of external thread ring screw connection, the utility model discloses through setting up the cone type fastening ring strip and the external thread ring cooperation of with opening, can form double seal when rotating, promotes the connection sealing property and the connection strength, prevents reagent leakage.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, specifically to a multi-channel organic synthesis reagent quantitative addition pump head structure. Background Technology

[0002] The multi-channel organic synthesis reagent quantitative addition pump head structure is an integrated mechanical device. Its core is that within a single pump head body, multiple independent channel units are set in parallel (each unit includes a dedicated liquid inlet pipeline, a high-precision metering chamber, a one-way valve group, and a drive component), and the set metering pump can add organic reagents synchronously or at different times.

[0003] Existing quantitative dosing pump heads require multiple bolts to be tightened individually when using bolt flange connections, making the installation process cumbersome. This is especially true in multi-channel scenarios, where the disassembly and assembly of multiple flange interfaces is time-consuming and labor-intensive, significantly reducing the efficiency of reagent replacement or pipeline cleaning. On the other hand, threaded connections that rely solely on the meshing of internal and external threaded cylinders transmit force through only a single thread surface, resulting in insufficient connection strength and potential loosening over long-term use. Therefore, we propose a multi-channel organic synthesis reagent quantitative dosing pump head structure. Utility Model Content

[0004] The purpose of this invention is to provide a multi-channel organic synthesis reagent quantitative addition pump head structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-channel organic synthesis reagent quantitative addition pump head structure, including a metering pump body, a pump head and a connecting joint, wherein an outlet pipe is installed at the top of the pump head, an inlet pipe is installed at the bottom of the pump head, and a sealing ring is provided at the lower end of the outer wall of the inlet pipe; The outer wall of the inlet pipe is threaded with a first internal threaded cylinder. A tapered fastening ring is fixedly connected to the bottom end of the first internal threaded cylinder. A connecting ring is fixedly connected to the outer wall of the inlet pipe near the upper end of the sealing ring. An external threaded ring is fixedly connected to the top of the connecting ring. Each external threaded ring has an opening at its top. An inlet ring pipe with a diameter matching the inlet pipe is embedded at the top of the connecting joint. A second internal threaded cylinder that is threadedly connected to the external threaded ring is fixedly connected to the top of the inlet ring pipe.

[0006] Preferably, the inlet pipe is made of metal, and the outer wall of the inlet pipe is threaded.

[0007] Preferably, the outer walls of both the first and second internally threaded cylinders are provided with a plurality of textures.

[0008] Preferably, the outer wall of each connector is embedded with a plurality of connecting conduits.

[0009] Preferably, the tapered fastening ring is arc-shaped on the side near the external threaded ring.

[0010] Compared with existing technologies, the advantages of this utility model are: by setting up first and second internal threaded cylinders, a tapered fastening ring, and an open external threaded ring to cooperate, a double seal can be formed during rotation, improving the connection sealing and connection strength, preventing reagent leakage, and the multi-connecting conduit of the connection joint can accommodate the simultaneous addition of multiple reagents, realizing multi-channel independent quantitative delivery. The overall structure facilitates quick disassembly and maintenance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the liquid inlet pipe of this utility model; Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram showing the disassembled structure of the liquid inlet pipe and connecting joint of this utility model.

[0012] In the diagram: 1. Metering pump body; 2. Pump head; 201. Opening; 21. Discharge pipe; 22. Inlet pipe; 23. Sealing ring; 24. First internal threaded cylinder; 25. Conical fastening ring; 26. Connecting ring; 27. External threaded ring; 3. Connecting joint; 31. Connecting conduit; 32. Inlet ring pipe; 33. Second internal threaded cylinder. Detailed Implementation

[0013] 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.

[0014] Please see Figure 1-4 The present invention provides the following technical solution: Example 1: A multi-channel organic synthesis reagent quantitative addition pump head structure, including a metering pump body 1, a pump head 2 and a connecting joint 3. The top of the pump head 2 is equipped with an outlet pipe 21 and the bottom of the pump head 2 is equipped with an inlet pipe 22. A sealing ring 23 is provided at the lower end of the outer wall of the inlet pipe 22. The inlet pipe 22 is made of metal and the outer wall of the inlet pipe 22 is threaded.

[0015] When in use, first align the inlet pipe 22 at the bottom of the pump head 2 with the reagent container interface, ensuring that the sealing ring 23 fits tightly with the interface to prevent leakage. Similarly, connect the outlet pipe 21 at the top of the pump head 2 to the reaction container or delivery pipeline, ensuring a good seal. Start the metering pump body 1 to drive the piston or diaphragm inside the pump head 2 to move, generating suction to draw the reagent from the inlet pipe 22 into the metering chamber. By controlling the piston stroke or the working time of the pump head 2, precise control of the amount of reagent added can be achieved. When the pump head 2 reverses direction, the reagent in the metering chamber is discharged to the target position through the outlet pipe 21.

[0016] Example 2: The technical solution of this example, which differs from that of Example 1, includes: a first internally threaded cylinder 24 is threadedly connected to the outer wall of the inlet pipe 22; a tapered fastening ring 25 is fixedly connected to the bottom end of the first internally threaded cylinder 24; a connecting ring 26 is fixedly connected to the upper end of the outer wall of the inlet pipe 22 near the sealing ring 23; an externally threaded ring 27 is fixedly connected to the top end of the connecting ring 26; an opening 201 is provided at the top end of the externally threaded ring 27; an inlet ring pipe 32 with a diameter matching that of the inlet pipe 22 is embedded at the top end of the connecting joint 3; a second internally threaded cylinder 33 threadedly connected to the externally threaded ring 27 is fixedly connected to the top end of the inlet ring pipe 32; several grooves are provided on the outer walls of the first internally threaded cylinder 24 and the second internally threaded cylinder 33; several connecting conduits 31 are embedded on the outer wall of the connecting joint 3; and the tapered fastening ring 25 is arc-shaped on the side near the externally threaded ring 27.

[0017] In use, first align the inlet ring tube 32 of the connector 3 with the inlet pipe 22, then rotate the second internal threaded cylinder 33 to make it threadedly connect and tightly fit with the external threaded ring 27. At this time, the opening 201 at the top of the external threaded ring 27 is in its natural state. Then rotate the first internal threaded cylinder 24 to move it downward along the external thread of the inlet pipe 22, pushing the tapered fastening ring 25 into the connection between the inlet ring tube 32 and the inlet pipe 22. During this process, the arc-shaped structure of the tapered fastening ring 25 contacts the inner top of the external threaded ring 27 and applies downward pressure. Because the top of the external threaded ring 27 has an opening 201, when subjected to pressure, the top of the external threaded ring 27 will shift outward, making the threaded connection between the external threaded ring 27 and the second internal threaded cylinder 33 tighter. At the same time, the inlet ring tube 32 will also be subjected to an outward expansion force, forming a tighter radial seal with the tapered fastening ring 25, achieving a double fastening and sealing effect. Then, the delivery tubes of different reagents can be connected one by one to the connecting conduits 31 on the outer wall of the connecting joint 3. During maintenance, the connecting joint 3 can be quickly disassembled by rotating the first internal threaded cylinder 24 and the second internal threaded cylinder 33 in the opposite direction. The texture on its outer wall can increase friction and facilitate manual operation.

[0018] Although embodiments of the present invention have been shown and described, 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. A multi-channel organic synthesis reagent quantitative addition pump head structure, including a metering pump body (1), a pump head (2) and a connecting joint (3), wherein a liquid outlet pipe (21) is installed at the top of the pump head (2), a liquid inlet pipe (22) is installed at the bottom of the pump head (2), and a sealing ring (23) is provided at the lower end of the outer wall of the liquid inlet pipe (22). Its features are: The outer wall of the inlet pipe (22) is threaded with a first internal threaded cylinder (24). The bottom end of the first internal threaded cylinder (24) is fixedly connected with a tapered fastening ring (25). The outer wall of the inlet pipe (22) is fixedly connected with a connecting ring (26) near the upper end of the sealing ring (23). The top end of the connecting ring (26) is fixedly connected with an external threaded ring (27). The top end of the external threaded ring (27) is provided with an opening (201). The top end of the connecting joint (3) is fitted with an inlet ring pipe (32) with a diameter matching that of the inlet pipe (22). The top end of the inlet ring pipe (32) is fixedly connected with a second internal threaded cylinder (33) that is threadedly connected to the external threaded ring (27).

2. The multi-channel organic synthesis reagent quantitative addition pump head structure according to claim 1, characterized in that: The liquid inlet pipe (22) is made of metal, and the outer wall of the liquid inlet pipe (22) is threaded.

3. The multi-channel organic synthesis reagent quantitative addition pump head structure according to claim 1, characterized in that: The outer walls of the first internal threaded cylinder (24) and the second internal threaded cylinder (33) are both provided with several textures.

4. The multi-channel organic synthesis reagent quantitative addition pump head structure according to claim 1, characterized in that: The outer wall of each connector (3) is embedded with several connecting conduits (31).

5. The multi-channel organic synthesis reagent quantitative addition pump head structure according to claim 1, characterized in that: The tapered fastening ring (25) is arc-shaped on the side near the external threaded ring (27).

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