Metering pump capable of automatically metering gas delivery

Abstract

The utility model discloses an automatic metering gas delivery metering pump, which comprises a hollow cylindrical pump body, a driving assembly arranged in the pump body and a pipeline assembly detachably arranged on the pump body, the driving assembly comprises a driving motor, a driving shaft and a cam, the driving motor is arranged at the bottom of the pump body, and the driving shaft is arranged at the bottom of the pump body. A threaded hole is formed in one end of the driving shaft, a screw head is arranged at the other end of the driving shaft, and the screw head can be embedded into the threaded hole. When the metering pump is used and the flow rate pumped out by the metering pump at a time needs to be increased, a driving shaft can be additionally arranged, and a new connecting pipe is opened, so that the cam can drive more pistons in the connecting pipes to move during single rotation, and more fluid is sucked and pumped out.

Description

Technical Field

[0001] The utility model relates to the technical field of metering pumps, in particular to a metering pump for automatically metering gas delivery. Background Art

[0002] Metering pumps are important supporting equipment for additives (liquid phase) widely used in industries such as environmental protection, electricity, beverages, food, chemicals, and medicine. The quality of metering pumps, including metering accuracy and output pressure, will directly affect the quality of the products produced by the host. The volume of fluids and gases that can be delivered by metering pumps is measured to facilitate the control of the delivery volume. Existing metering pumps cannot increase the volume of gas pumped out by the metering pump in a single time according to actual needs. Therefore, the present application aims to provide a metering pump for automatic metering of gas delivery that can overcome the above-mentioned defects. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a metering pump for automatically metering gas delivery.

[0004] The purpose of the utility model is achieved through the following technical solutions: a metering pump for automatically metering gas delivery, comprising a hollow cylindrical pump body, a driving assembly arranged in the pump body, and a pipeline assembly detachably arranged on the pump body, the driving assembly comprising a driving motor, a driving shaft and a cam, the driving motor is arranged at the bottom of the pump body, one end of the driving shaft is provided with a threaded hole, and the other end of the driving shaft is provided with a screw head, and the screw head can be embedded in the threaded hole.

[0005] Preferably, at least two connecting tubes are arranged along the axial direction of the pump body, and at least two connecting tubes are arranged along the circumferential direction of the pump body. A piston is arranged in the connecting tube, and the piston can abut against and contact the cam.

[0006] Preferably, the connecting lines of two adjacent connecting pipes located at different heights are perpendicular to each other.

[0007] Preferably, a mounting plate is provided in the connecting pipe, and a compression spring is provided between the mounting plate and the piston.

[0008] Preferably, the pipeline assembly includes a tee, a first one-way valve and a second one-way valve arranged in the tee, the tee is provided with an internal thread, the connecting pipe is provided with an external thread, and the connecting pipe is threadedly connected to the tee.

[0009] Preferably, a through hole is provided on the mounting plate, and a connecting rod passing through the through hole is provided on the piston.

[0010] Preferably, when the cam abuts against the connecting rod to push the piston to move, the compression spring can be stretched.

[0011] The utility model has the following advantages:

[0012] (1) When it is necessary to increase the flow rate of the metering pump in a single pumping, a new drive shaft can be added and a new connecting pipe can be opened so that the cam can drive more pistons in the connecting pipe to move during a single rotation, thereby sucking and pumping out more fluid.

[0013] (2) When in use, there are at least two tees on the same horizontal plane. When one tee pumps out fluid, the other tee can suck in fluid, thereby improving the fluid pumping efficiency of the metering pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the metering pump of the utility model;

[0015] Figure 2 A schematic diagram of the arrangement of cams at different heights in a top view;

[0016] In the figure, 1-pump body, 2-drive assembly, 3-pipe assembly, 2a-drive motor, 2b-drive shaft, 2c-cam, 4-threaded hole, 5-screw head, 6-connecting pipe, 7-piston, 8-mounting plate, 3a-tee pipe, 3b-first one-way valve, 3c-second one-way valve, 9-compression spring, 10-through hole, 11-connecting rod. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings, and the protection scope of the utility model is not limited to the following:

[0018] like Figure 1 and Figure 2 As shown, the present application provides a metering pump for automatic metering of gas delivery, including a hollow cylindrical pump body 1, a drive assembly 2 arranged in the pump body 1, and a pipe assembly 3 detachably arranged on the pump body 1, wherein the drive assembly 2 includes a drive motor 2a, a drive shaft 2b and a cam 2c, wherein the drive motor 2a is arranged at the bottom of the pump body 1, a threaded hole 4 is arranged at one end of the drive shaft 2b, and a screw head 5 is arranged at the other end of the drive shaft 2b, and the screw head 5 can be embedded in the threaded hole 4. Specifically, at least two connecting pipes 6 are arranged along the axial direction of the pump body 1, and at least two connecting pipes 6 are arranged along the circumference of the pump body 1, and a piston 7 is arranged in the connecting pipe 6, and the piston 7 can abut against the cam 2c. As shown Figure 2As shown, the connecting lines of two adjacent connecting pipes 6 located at different heights are perpendicular to each other. The connecting pipe 6 that is not needed can be blocked by configuring a sealing valve. When it is necessary to increase the flow rate of a single pumping out of the metering pump, a new drive shaft 2b can be added, and a new connecting pipe can be opened so that the cam can drive more pistons in the connecting pipes to move when the cam rotates once, thereby sucking and pumping out more fluid. It can be understood that the drive motor 2a can be equipped with a metering device for measuring the number of rotations of its drive shaft 2b. Since the volume of the fluid sucked and pumped out by the three-way pipe is the same each time, the volume of the pumped fluid can be obtained by multiplying the number of rotations by the volume.

[0019] Preferably, a mounting plate 8 is provided in the connecting pipe 6, and a compression spring 9 is provided between the mounting plate 8 and the piston 7. A through hole 10 is provided on the mounting plate 8, and a connecting rod 11 passing through the through hole 10 is provided on the piston 7. When the cam 2c abuts against the connecting rod 11 to push the piston 7 to move, the compression spring 9 can be stretched. When the cam slowly leaves the connecting rod, the connecting rod can automatically move under the action of the compression spring, that is, Figure 1 As shown, when the cam pushes the connecting rod 11 on the right side, the piston can move to the right, and the compression spring is stretched at this time. When the cam gradually leaves the connecting rod, the piston moves to the left under the action of the compression spring.

[0020] Preferably, the pipeline assembly 3 includes a three-way pipe 3a, a first one-way valve 3b and a second one-way valve 3c arranged in the three-way pipe 3a, the three-way pipe 3a is provided with an internal thread, and the connecting pipe 6 is provided with an external thread, and the connecting pipe 6 is threadedly connected to the three-way pipe 3a. The first one-way valve and the second one-way valve can be diaphragm one-way valves that are publicly sold in the prior art, which can be automatically opened or closed based on the pressure difference between the two sides thereof, such as Figure 1 When the piston moves to the left, the second one-way valve on the left side of the three-way pipe is closed, and the first one-way valve on the upper side is opened, so that the fluid sucked in the three-way pipe is pumped upward. When the piston moves to the right, the second one-way valve is opened and the first one-way valve is closed, so that the fluid is sucked into the three-way pipe. When in use, there are at least two three-way pipes on the same horizontal plane. When one three-way pipe pumps out fluid, the other three-way pipe can suck in fluid, thereby improving the fluid pumping efficiency of the metering pump.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A metering pump for automatically metering gas delivery, characterized in that: The invention comprises a hollow cylindrical pump body (1), a driving assembly (2) arranged in the pump body (1), and a pipeline assembly (3) detachably arranged on the pump body (1), wherein the driving assembly (2) comprises a driving motor (2a), a driving shaft (2b), and a cam (2c), wherein the driving motor (2a) is arranged at the bottom of the pump body (1), a threaded hole (4) is arranged at one end of the driving shaft (2b), and a screw head (5) is arranged at the other end of the driving shaft (2b), and the screw head (5) can be embedded in the threaded hole (4); At least two connecting pipes (6) are arranged along the axial direction of the pump body (1), and at least two connecting pipes (6) are arranged along the circumferential direction of the pump body (1). A piston (7) is arranged in the connecting pipe (6), and the piston (7) can abut against the cam (2c).

2. The metering pump according to claim 1, characterized in that The connecting lines of two adjacent connecting pipes (6) located at different heights are perpendicular to each other.

3. The metering pump according to claim 2, characterized in that A mounting plate (8) is arranged in the connecting pipe (6), and a compression spring (9) is arranged between the mounting plate (8) and the piston (7).

4. The metering pump according to claim 3, characterized in that The pipeline assembly (3) comprises a three-way pipe (3a), a first one-way valve (3b) and a second one-way valve (3c) arranged in the three-way pipe (3a), the three-way pipe (3a) is provided with an internal thread, the connecting pipe (6) is provided with an external thread, and the connecting pipe (6) is threadedly connected to the three-way pipe (3a).

5. The metering pump according to claim 4, characterized in that The mounting plate (8) is provided with a through hole (10), and the piston (7) is provided with a connecting rod (11) passing through the through hole (10).

6. The metering pump according to claim 5, characterized in that When the cam (2c) is in abutment contact with the connecting rod (11) to push the piston (7) to move, the compression spring (9) can be stretched.

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