Metering pump with buffer

Abstract

The utility model discloses a metering pump with buffer, including metering pump body, the first discharge pipe for discharging is passed through the setting in the one side top of metering pump body, the feed pipe for feeding is passed through the setting in the one side bottom of metering pump body, the adjustment buffer mechanism of preliminary buffering to discharge instantaneous flow is passed through the setting on the first discharge pipe, the elastic buffer mechanism of secondary buffering to discharge material is set with the adjustment buffer mechanism above on the first discharge pipe. The first discharge pipe and feed pipe of the utility model setting cooperate with metering pump body can convey material, and when material is conveyed through the first discharge pipe, can carry out first step buffering through adjustment buffer mechanism, and adjustment buffer mechanism can adjust the force that needs buffering according to the speed of transmission, and then set elastic buffer mechanism can carry out secondary buffering to the material of conveying, prevent instantaneous big flow from influencing the normal conveying of material.

Description

Technical Field

[0001] This utility model relates to the field of metering pump technology, specifically a metering pump with a buffer. Background Technology

[0002] A metering pump, also known as a proportional pump or metering pump, is a reciprocating positive displacement pump capable of precisely controlling and delivering liquids at a known flow rate. Its core characteristics are adjustability, precision, and good repeatability. It is widely used in industrial applications requiring the precise addition of chemical reagents. Metering pumps are typically plunger or diaphragm type, driven by a motor through a crank-connecting rod mechanism, causing the plunger or diaphragm to reciprocate, thus achieving the intake and discharge of liquid. This reciprocating motion naturally produces pulsations in flow rate and pressure.

[0003] When using a metering pump, there may be instantaneous large or small flow rates when the pump is started, running normally, or stopping. Due to the pulsating flow caused by the reciprocating working principle, it is impossible to provide a more stable and accurate flow output. To address this, we propose a metering pump with a buffer. Utility Model Content

[0004] The purpose of this invention is to provide a metering pump with a buffer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a metering pump with a buffer, comprising a metering pump body, a support base fixedly installed at the bottom of the metering pump body, a first discharge pipe for discharging material penetrating through the top of one side of the metering pump body, a feed pipe for feeding material penetrating through the bottom of one side of the metering pump body, an adjusting buffer mechanism for initially buffering the instantaneous flow rate of the discharge material penetrating through the first discharge pipe, and an elastic buffer mechanism for secondary buffering of the discharged material being provided on the first discharge pipe and above the adjusting buffer mechanism.

[0006] Furthermore, the elastic buffer mechanism includes a first fixing plate, a positioning post, a second fixing plate, a first diffusion frame, a second diffusion frame, an extension plate, and a second discharge pipe. The top of the first discharge pipe is fixedly connected to the first diffusion frame via the first fixing plate. Multiple sets of positioning posts are fixedly connected to the top of the first fixing plate. The second fixing plate is sleeved on the outside of the positioning post. A gasket that contacts the bottom of the second fixing plate is fixedly connected to the outside of the positioning post. The second diffusion frame is fixedly connected to the inside of the second fixing plate. The first diffusion frame and the second diffusion frame are connected by an extension plate made of elastic material. A threaded rod is fixedly connected to the top of the positioning post. A locking nut is threaded onto the outside of the threaded rod.

[0007] Furthermore, both the first and second diffusion frames are configured as semi-elliptical shapes.

[0008] Furthermore, the adjusting buffer mechanism includes an auxiliary frame, a movable plate, a buffer seat, a positioning ring, and a positioning plate. The auxiliary frame is fixedly connected to the first discharge pipe. A positioning plate is provided at one end of the inner side of the auxiliary frame. A telescopic rod is slidably connected to the positioning plate. A movable plate is fixedly connected to one end of the telescopic rod. A buffer seat that fits against the inner wall of the auxiliary frame is fixedly connected to one side of the movable plate. A positioning ring that fits against one side of the buffer seat is fixedly connected to the inner wall of the auxiliary frame. A spring is fixedly connected between the movable plate and the positioning plate, and outside the telescopic rod.

[0009] Furthermore, the adjustment buffer mechanism also includes an external threaded tube and an internal threaded tube. One end of the auxiliary frame is fixedly connected to the internal threaded tube, and the internal thread of the internal threaded tube is connected to the external threaded tube. One end of the external threaded tube is attached to one side of the positioning plate.

[0010] Furthermore, the buffer seat is made of rubber.

[0011] Compared with the prior art, the present invention has the following advantages: the first discharge pipe and the inlet pipe of the present invention cooperate with the metering pump body to transport materials. When the material is transported through the first discharge pipe, it can be buffered by the first adjustment buffer mechanism. Moreover, the adjustment buffer mechanism can adjust the buffering force according to the transmission speed. The subsequent elastic buffer mechanism can buffer the transported material a second time to prevent the instantaneous large flow from affecting the normal transport of materials. Attached Figure Description

[0012] Figure 1 This is a first perspective structural diagram of the present invention; Figure 2 This is a second perspective view of the structure of this utility model; Figure 3 This is a frontal cross-sectional view of the first adjusting buffer mechanism of this utility model.

[0013] In the diagram: 1. Metering pump body; 2. Support base; 3. First discharge pipe; 4. Feed pipe; 5. Adjustment buffer mechanism; 6. Elastic buffer mechanism; 7. First fixing plate; 8. Positioning post; 9. Second fixing plate; 10. First diffuser frame; 11. Second diffuser frame; 12. Extension plate; 13. Second discharge pipe; 14. Threaded rod; 15. Locking nut; 16. Gasket; 17. Auxiliary frame; 18. Moving plate; 19. Buffer seat; 20. Positioning ring; 21. Telescopic rod; 22. Positioning plate; 23. External threaded pipe; 24. Spring; 25. Internal threaded pipe. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-3 This utility model provides a technical solution: a metering pump with a buffer, including a metering pump body 1, a support base 2 fixedly installed at the bottom of the metering pump body 1, a first discharge pipe 3 for discharging material penetrating through the top of one side of the metering pump body 1, a feed pipe 4 for feeding material penetrating through the bottom of one side of the metering pump body 1, an adjustment buffer mechanism 5 for initially buffering the instantaneous flow rate of the discharge material penetrating through the first discharge pipe 3, and an elastic buffer mechanism 6 for secondary buffering of the discharged material provided on the first discharge pipe 3 and above the adjustment buffer mechanism 5.

[0016] The first discharge pipe 3 and the inlet pipe 4 are designed to work together with the metering pump body 1 to transport materials. When the materials are transported through the first discharge pipe 3, they can be buffered for the first time by the adjusting buffer mechanism 5. The adjusting buffer mechanism 5 can adjust the buffering force according to the transmission speed. The elastic buffer mechanism 6 is then set to buffer the transported materials for the second time to prevent the instantaneous large flow from affecting the normal transport of materials.

[0017] Please see Figures 1-3 The adjustment buffer mechanism 5 includes an auxiliary frame 17, a movable plate 18, a buffer seat 19, a positioning ring 20, and a positioning plate 22. The auxiliary frame 17 is fixedly connected to the first discharge pipe 3. A positioning plate 22 is provided at one end of the interior of the auxiliary frame 17. A telescopic rod 21 is slidably connected to the positioning plate 22. A movable plate 18 is fixedly connected to one end of the telescopic rod 21. A buffer seat 19 that fits against the inner wall of the auxiliary frame 17 is fixedly connected to one side of the movable plate 18. A positioning ring 20 that fits against one side of the buffer seat 19 is fixedly connected to the inner wall of the auxiliary frame 17. A spring 24 is fixedly connected between the movable plate 18 and the positioning plate 22 and outside the telescopic rod 21.

[0018] The positioning plate 22 is fixedly installed inside the auxiliary frame 17. When the pressure of the material conveyed by the first discharge pipe 3 is too high, the buffer seat 19 can be pushed to move backward, and the spring 24 can buffer the material, and the moving plate 18 and the telescopic rod 21 can move backward, so that the buffer seat 19 can provide buffering force.

[0019] Please see Figures 1-3The adjustment buffer mechanism 5 also includes an external threaded tube 23 and an internal threaded tube 25. One end of the auxiliary frame 17 is fixedly connected to the internal threaded tube 25, and the internal thread of the internal threaded tube 25 is connected to the external threaded tube 23. One end of the external threaded tube 23 is attached to one side of the positioning plate 22.

[0020] When the pressure to be conveyed needs to be buffered and adjusted, the external threaded tube 23 is rotated so that it moves along the inside of the internal threaded tube 25. This adjusts the position of the positioning plate 22 and compresses the spring 24, thus preventing the buffer seat 19 from being pushed when the conveying pressure changes.

[0021] Please see Figure 1 and Figure 2 The elastic buffer mechanism 6 includes a first fixing plate 7, a positioning post 8, a second fixing plate 9, a first diffusion frame 10, a second diffusion frame 11, an extension plate 12, and a second discharge pipe 13. The top of the first discharge pipe 3 is fixedly connected to the first diffusion frame 10 via the first fixing plate 7. Multiple sets of positioning posts 8 are fixedly connected to the top of the first fixing plate 7. The second fixing plate 9 is sleeved on the outside of the positioning post 8. A gasket 16 that contacts the bottom of the second fixing plate 9 is fixedly connected to the outside of the positioning post 8. The second diffusion frame 11 is fixedly connected to the inside of the second fixing plate 9. The first diffusion frame 10 and the second diffusion frame 11 are connected by an extension plate 12 made of elastic material. A threaded rod 14 is fixedly connected to the top of the positioning post 8. A locking nut 15 is threadedly connected to the outside of the threaded rod 14.

[0022] The conveyed material is conveyed and discharged through the first diffusion frame 10 and the second diffusion frame 11. When the conveyed flow rate increases instantaneously, it can impact the expansion piece 12 made of elastic material, causing the expansion piece 12 to expand, thus offsetting the corresponding instantaneous impact force.

[0023] Please see Figure 1 and Figure 2 The first diffusion frame 10 and the second diffusion frame 11 are both set to semi-elliptical shape. The semi-elliptical first diffusion frame 10 and the second diffusion frame 11 can increase the conveying volume to a certain extent, thereby further buffering the conveyed material.

[0024] Please see Figure 1 and Figure 3 The buffer seat 19 is made of rubber, and the rubber material of the buffer seat 19 can always fit and seal against the inner wall of the auxiliary frame 17.

[0025] In use, the first discharge pipe 3 and the inlet pipe 4 work together with the metering pump body 1 to convey materials. When the material passes through the first discharge pipe 3, it undergoes initial buffering via the adjusting buffer mechanism 5. The adjusting buffer mechanism 5 adjusts the required buffering force according to the transmission speed. Subsequently, the elastic buffer mechanism 6 provides secondary buffering for the conveyed material, preventing sudden large flow rates from affecting normal material transport. The positioning plate 22 is fixedly installed inside the auxiliary frame 17. When the pressure of the material conveyed by the first discharge pipe 3 becomes too high, the buffer seat 19 can be pushed backward, and the spring 24 provides buffering, causing the moving plate 18 and the telescopic rod 21 to move backward, thus utilizing the buffer... The impact seat 19 provides buffering force. When the pressure to be conveyed needs to be adjusted, the external threaded tube 23 is rotated to move along the inside of the internal threaded tube 25. This adjusts the position of the positioning plate 22, thereby compressing the spring 24. This prevents the impact seat 19 from being pushed when the conveying pressure changes. The conveyed material is conveyed and discharged through the first diffuser frame 10 and the second diffuser frame 11. When the conveying flow rate increases instantaneously, it impacts the expansion plate 12 made of elastic material, causing the expansion plate 12 to expand. This counteracts the instantaneous impact force. The semi-elliptical first diffuser frame 10 and the second diffuser frame 11 can increase the conveying volume to a certain extent, thereby further buffering the conveyed material.

[0026] 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 metering pump with a buffer, comprising a metering pump body (1), a support base (2) fixedly mounted on the bottom of the metering pump body (1), a first discharge pipe (3) for discharging material penetrating through the top of one side of the metering pump body (1), and a feed pipe (4) for feeding material penetrating through the bottom of one side of the metering pump body (1), characterized in that: An adjustment buffer mechanism (5) for initial buffering of instantaneous discharge flow is provided through the first discharge pipe (3), and an elastic buffer mechanism (6) for secondary buffering of discharge material is provided on the first discharge pipe (3) and above the adjustment buffer mechanism (5).

2. A metering pump with a buffer according to claim 1, characterized in that: The elastic buffer mechanism (6) includes a first fixing plate (7), a positioning post (8), a second fixing plate (9), a first diffusion frame (10), a second diffusion frame (11), an extension plate (12), and a second discharge pipe (13). The top of the first discharge pipe (3) is fixedly connected to the first diffusion frame (10) via the first fixing plate (7). The top of the first fixing plate (7) is fixedly connected to multiple sets of positioning posts (8). The second fixing plate (9) is sleeved on the outside of the positioning post (8). The gasket (16) that contacts the bottom of the second fixing plate (9) is fixedly connected to the outside of the positioning post (8). The second diffusion frame (11) is fixedly connected inside the second fixing plate (9). The first diffusion frame (10) and the second diffusion frame (11) are connected by an extension plate (12) made of elastic material. The top of the positioning post (8) is fixedly connected to a threaded rod (14). The threaded rod (14) is threadedly connected to a locking nut (15).

3. A metering pump with a buffer according to claim 2, characterized in that: Both the first diffusion frame (10) and the second diffusion frame (11) are set to semi-elliptical shape.

4. A metering pump with a buffer according to claim 2, characterized in that: The adjustment buffer mechanism (5) includes an auxiliary frame (17), a movable plate (18), a buffer seat (19), a positioning ring (20), and a positioning plate (22). The auxiliary frame (17) is fixedly connected to the first discharge pipe (3). A positioning plate (22) is provided at one end of the interior of the auxiliary frame (17). A telescopic rod (21) is slidably connected to the positioning plate (22). A movable plate (18) is fixedly connected to one end of the telescopic rod (21). A buffer seat (19) that fits against the inner wall of the auxiliary frame (17) is fixedly connected to one side of the movable plate (18). A positioning ring (20) that fits against one side of the buffer seat (19) is fixedly connected to the inner wall of the auxiliary frame (17). A spring (24) is fixedly connected between the movable plate (18) and the positioning plate (22) and outside the telescopic rod (21).

5. A metering pump with a buffer according to claim 4, characterized in that: The adjustment buffer mechanism (5) also includes an external threaded tube (23) and an internal threaded tube (25). One end of the auxiliary frame (17) is fixedly connected to the internal threaded tube (25), and the internal thread of the internal threaded tube (25) is connected to the external threaded tube (23). One end of the external threaded tube (23) is attached to one side of the positioning plate (22).

6. A metering pump with a buffer according to claim 5, characterized in that: The buffer seat (19) is made of rubber.

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