Feed buffer mechanism for a metering pump

Abstract

The utility model discloses a kind of feed buffering mechanism for metering pump, including buffer tube and metering pump main body, the metering pump main body includes pump body, feed end and discharge end, the buffer tube includes fixedly connected upper bend pipe and lower bend pipe. In the application, after adjusting valve is connected with the vertical end of upper bend pipe, adjusting valve other side is connected with the feed end of metering pump main body, then lift telescopic pipe so that inner ring slides along the outer surface wall of extension pipe, until inner ring is tightly attached to the bottom of baffle ring, at this time flange plate is just connected with the flange assembly of external pipeline, finally it is connected by fastening rod that its flange plate and external flange assembly, to realize the fixation of buffer tube, the metering buffering of metering pump is realized by S-shaped buffer tube cooperation adjusting valve, and the subsequent disassembly of bend pipe can be ensured conveniently by the vertical misplacement of telescopic pipe, thereby the convenience of feed buffering mechanism for metering pump is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of metering pump accessories, and in particular to a feed buffer mechanism for a metering pump. Background Technology

[0002] The feed buffer mechanism for metering pumps is a device installed on the feed pipeline of the metering pump. Its main function is to reduce or eliminate fluid pulsation caused by the reciprocating motion of the pump, thereby stabilizing the feed flow rate, reducing system pressure fluctuations, preventing cavitation, and improving metering accuracy.

[0003] Chinese Patent Publication No. CN220581247U, published on March 12, 2024, discloses a metering pump feed buffer mechanism, including a metering pump, the metering pump including a pump body, the pump body being provided with a feed end, the feed end being provided with a buffer section, the buffer section including a serpentine bend provided on the feed end, a sealing ring being provided on one end of the serpentine bend near the feed end, and a pressure stabilizing component inside the serpentine bend near the feed end, the pressure stabilizing component including a sleeve.

[0004] Existing feed buffers for metering pumps are mostly implemented using S-shaped buffer pipes. The buffer pipes are connected to the feed end of the metering pump and the external pipeline through flanges on both sides. In practice, after the metering pump and the external pipeline are fixed, it is inconvenient to independently disassemble and install the buffer pipes. Therefore, there is an urgent need to propose a corresponding feed buffer mechanism for metering pumps to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a feed buffer mechanism for a metering pump in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A feed buffer mechanism for a metering pump includes a buffer pipe and a metering pump body. The metering pump body includes a pump body, a feed end, and a discharge end. The buffer pipe includes an upper bend and a lower bend that are fixedly connected. A regulating valve is fixedly connected between the vertical end of the upper bend and the feed end. A telescopic pipe and a telescopic assembly for telescopic pipe extension and retraction are integrated at the top of the vertical end of the lower bend. A flange is fixedly connected to the top of the telescopic pipe.

[0007] Preferably, an inspection port is fixedly connected to the bottom of the lower bend, and a sealing cap is screwed onto the bottom of the inspection port.

[0008] Preferably, the telescopic assembly includes an extension tube fixedly connected to the top of the vertical end of the lower bend, and the top of the extension tube is provided with a limiting part for vertically limiting the telescopic tube.

[0009] Preferably, the limiting part includes a retaining ring fixedly connected to the top of the extension tube, and an inner ring fixedly connected to the inner surface wall of the bottom of the telescopic tube, with the top of the inner ring abutting against the bottom of the retaining ring.

[0010] Preferably, the retaining ring has a wedge-shaped cross-section.

[0011] Preferably, a sealing gasket is fixedly connected to the bottom of the retaining ring, and a sealing gasket is fixedly connected to the top of the flange.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this application, after connecting the regulating valve to the vertical end of the upper bend, the other side of the regulating valve is connected to the feed end of the metering pump body. Then, the telescopic pipe is lifted so that the inner ring slides along the outer wall of the extension pipe until the inner ring is tightly attached to the bottom of the retaining ring. At this time, the flange is just connected to the flange assembly of the external pipe. Finally, the flange is connected to the external flange assembly by the fastening rod, thereby fixing the buffer pipe. The metering buffer of the metering pump is achieved by the S-shaped buffer pipe in conjunction with the regulating valve. The vertical misalignment of the telescopic pipe can ensure the convenience of subsequent disassembly and assembly of the bend, thereby improving the ease of use of the feed buffer mechanism for the metering pump.

[0013] 2. In this application, the combination of the sealing cover and the inspection port can ensure the airtightness of the inspection port. When the lower bend pipe is blocked, the sealing cover can be unscrewed and external cleaning tools can be used to quickly clear the inside of the lower bend pipe, thereby improving the stability of the feed buffer mechanism used in the metering pump. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown; Figure 2 A schematic diagram of the inspection port structure provided according to an embodiment of the present utility model is shown; Figure 3 A schematic diagram of a closed cover structure according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of a retaining ring structure according to an embodiment of the present invention is shown.

[0015] Legend: 1. Metering pump body; 101. Pump body; 102. Inlet end; 103. Outlet end; 2. Regulating valve; 3. Buffer pipe; 301. Upper bend; 302. Lower bend; 4. Telescopic pipe; 5. Flange; 6. Inspection port; 7. Sealing cover; 8. Extension pipe; 9. Retaining ring; 10. Sealing gasket one; 11. Inner ring; 12. Sealing gasket two. Detailed Implementation

[0016] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: A feed buffer mechanism for a metering pump includes a buffer pipe 3 and a metering pump body 1. The metering pump body 1 includes a pump body 101, a feed end 102 and a discharge end 103. The buffer pipe 3 includes an upper bend pipe 301 and a lower bend pipe 302 that are fixedly connected. An adjusting valve 2 is fixedly connected between the vertical end of the upper bend pipe 301 and the feed end 102. A telescopic pipe 4 and a telescopic assembly for telescopic pipe 4 are integrated at the top of the vertical end of the lower bend pipe 302. A flange 5 is fixedly connected to the top of the telescopic pipe 4. After connecting the regulating valve 2 to the vertical end of the upper bend 301, connect the other side of the regulating valve 2 to the feed end 102 of the metering pump body 1. Then, lift the telescopic pipe 4 so that the inner ring 11 slides along the outer wall of the extension pipe 8 until the inner ring 11 is tightly attached to the bottom of the retaining ring 9. At this time, the flange 5 is just connected to the flange assembly of the external pipeline. Finally, the flange 5 is connected to the external flange assembly by the fastening rod, thereby fixing the buffer pipe 3. The metering buffer of the metering pump is achieved by the S-shaped buffer pipe 3 in conjunction with the regulating valve 2. The vertical misalignment of the telescopic pipe 4 can ensure the convenience of subsequent disassembly and assembly of the buffer pipe 3, thereby improving the convenience of using the feed buffer mechanism for the metering pump.

[0018] Specifically, such as Figure 2 and Figure 4 As shown, an inspection port 6 is fixedly connected to the bottom of the lower bend 302, and a sealing cover 7 is screwed onto the bottom of the inspection port 6. The combination of the sealing cover 7 and the inspection port 6 can ensure the airtightness of the inspection port 6. When the lower bend 302 is blocked, the inside of the lower bend 302 can be quickly cleared by unscrewing the sealing cover 7 and using external cleaning tools, thereby improving the stability of the feed buffer mechanism used in the metering pump.

[0019] Specifically, such as Figure 2 and Figure 3As shown, the telescopic assembly includes an extension pipe 8 fixedly connected to the top of the vertical end of the lower bend 302. The top of the extension pipe 8 is provided with a limiting part for vertically limiting the telescopic pipe 4. The limiting part includes a retaining ring 9 fixedly connected to the top of the extension pipe 8. An inner ring 11 is fixedly connected to the inner wall of the bottom of the telescopic pipe 4. The top of the inner ring 11 abuts against the bottom of the retaining ring 9. Lifting the telescopic pipe 4 causes the inner ring 11 to slide along the outer wall of the extension pipe 8 until the inner ring 11 is tightly attached to the bottom of the retaining ring 9. At this time, the flange 5 is exactly connected to the flange assembly of the external pipeline. Finally, the flange 5 is connected to the external flange assembly by the fastening rod. The cross-section of the retaining ring 9 is wedge-shaped to prevent liquid from depositing on the top of the retaining ring 9. A sealing gasket 10 is fixedly connected to the bottom of the retaining ring 9, and a sealing gasket 2 12 is fixedly connected to the top of the flange 5 to further ensure the airtightness of the connection between the retaining ring 9 and the inner ring 11, as well as between the flange 5 and the external flange assembly.

[0020] Working principle: After connecting the regulating valve 2 to the vertical end of the upper bend 301, connect the other side of the regulating valve 2 to the feed end 102 of the metering pump body 1. Then, lift the telescopic pipe 4 to make the inner ring 11 slide along the outer wall of the extension pipe 8 until the inner ring 11 is tightly attached to the bottom of the retaining ring 9. At this time, the flange 5 is just connected to the flange assembly of the external pipeline. Finally, the flange 5 is connected to the external flange assembly by the fastening rod, thereby fixing the buffer pipe 3. The S-shaped buffer pipe 3, together with the regulating valve 2, realizes the metering buffer of the metering pump. The vertical misalignment of the telescopic pipe 4 can ensure the convenience of subsequent disassembly and assembly of the buffer pipe 3, thereby improving the convenience of using the feed buffer mechanism for the metering pump. The combination of the sealing cover 7 and the inspection port 6 can ensure the airtightness of the inspection port 6. When the lower bend 302 is blocked, the sealing cover 7 can be unscrewed and external cleaning tools can be used to quickly clear the inside of the lower bend 302, thereby improving the stability of the feed buffer mechanism for the metering pump.

[0021] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A feed buffer mechanism for a metering pump, comprising a buffer pipe (3) and a metering pump body (1), wherein the metering pump body (1) comprises a pump body (101), a feed end (102), and a discharge end (103), characterized in that, The buffer tube (3) includes an upper bend (301) and a lower bend (302) that are fixedly connected. A regulating valve (2) is fixedly connected between the vertical end of the upper bend (301) and the feed end (102). A telescopic tube (4) and a telescopic assembly for telescopic tube (4) are integrated at the top of the vertical end of the lower bend (302). A flange (5) is fixedly connected to the top of the telescopic tube (4).

2. The feed buffer mechanism for a metering pump according to claim 1, characterized in that, The bottom of the lower bend (302) is fixedly connected to an inspection port (6), and the bottom of the inspection port (6) is screwed with a sealing cap (7).

3. The feed buffer mechanism for a metering pump according to claim 1, characterized in that, The telescopic assembly includes an extension tube (8) fixedly connected to the top of the vertical end of the lower bend tube (302), and the top of the extension tube (8) is provided with a limiting part for vertically limiting the telescopic tube (4).

4. The feed buffer mechanism for a metering pump according to claim 3, characterized in that, The limiting part includes a retaining ring (9) fixedly connected to the top of the extension tube (8), and an inner ring (11) fixedly connected to the inner wall of the bottom of the telescopic tube (4), with the top of the inner ring (11) abutting against the bottom of the retaining ring (9).

5. A feed buffer mechanism for a metering pump according to claim 4, characterized in that, The retaining ring (9) has a wedge-shaped cross-section.

6. A feed buffer mechanism for a metering pump according to claim 5, characterized in that, The bottom of the retaining ring (9) is fixedly connected to a sealing gasket one (10), and the top of the flange (5) is fixedly connected to a sealing gasket two (12).

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