A proportioning pump

Abstract

The utility model relates to liquid proportioning device technical field especially is involved in a kind of proportioning pump.The proportioning pump includes top screw cap, shell, piston and dosing pipe;The top screw cap is set in the upper portion of shell, dosing pipe is set in the lower portion of shell;The shell is cavity structure, and the shell is divided into liquid inlet chamber and mixed liquid chamber in, upper liquid inlet and liquid outlet are arranged on the shell, the liquid inlet is communicated with liquid inlet chamber, mixed liquid chamber is communicated with liquid outlet;The shell is also provided with blow-off port, and the blow-off port is communicated with mixed liquid chamber.Through being provided with blow-off port on the shell, through the setting of blow-off port, can clean mixed liquid chamber on the basis of not disassembling proportioning pump, saves cleaning time, can improve cleaning frequency, effectively reduced the abrasion of impurity to piston or shell, increased the service life of proportioning pump.

Description

Technical Field

[0001] This utility model relates to the field of liquid proportioning device technology, and in particular to a proportioning pump. Background Technology

[0002] The proportioning pump is installed directly inside the process water pipeline. It is driven by the kinetic energy of the water flow in the pipeline; its sole power source is water pressure. Driven by the pressurized water flow, concentrated chemicals are drawn in in a measured proportion and then combined with the water, which acts as the driving force. Under the pressure of the water, the thoroughly mixed water and chemicals are then transported downstream.

[0003] During operation, impurities such as mud, sand, and large particles of medicine may accumulate in the mixing chamber of the mixing pump. These impurities can cause scratches on the piston or outer casing. As the number of scratches increases, the sealing between the piston and the outer casing will deteriorate, eventually causing the mixing pump to malfunction. Utility Model Content

[0004] The purpose of this utility model is to provide a proportioning pump that can solve the problem in the prior art where impurities can easily cause scratches on the piston or outer casing.

[0005] This utility model provides a proportioning pump, which includes a top cap, a housing, a piston, and a dosing pipe;

[0006] The top cap is located at the upper part of the housing, and the dosing tube is located at the lower part of the housing;

[0007] The shell has a hollow structure, and the shell is divided into a liquid inlet chamber and a liquid mixing chamber. The shell is provided with an upper liquid inlet and a liquid outlet. The liquid inlet is connected to the liquid inlet chamber, and the liquid mixing chamber is connected to the liquid outlet.

[0008] The shell is also provided with a drain port, which is connected to the mixing chamber.

[0009] Preferably, the dosing tube is provided with a drug inlet channel;

[0010] A drug-suction piston is installed inside the drug inlet channel;

[0011] The drug-absorbing piston is connected to the piston via a liquid-drawing rod.

[0012] Preferably, the upper end of the dosing tube is provided with a liquid buffer chamber, the diameter of which is larger than the diameter of the dosing channel;

[0013] The upper end of the liquid buffer chamber is connected to the liquid inlet chamber, and the liquid buffer chamber is connected to the drug inlet channel.

[0014] Preferably, a one-way valve is provided at the lower end of the drug inlet channel.

[0015] Preferably, the housing is provided with a temperature sensing device.

[0016] Preferably, the temperature sensing device is a temperature-sensitive color-changing device.

[0017] Preferably, the housing is provided with a bracket mounting base, and the bracket mounting base is provided with a bracket locking nut.

[0018] Preferably, one end of the piston is located in the liquid inlet chamber and the other end is located in the liquid mixing chamber;

[0019] The piston is provided with a first connecting hole and a second connecting hole. The first connecting hole connects the liquid inlet chamber and the liquid mixing chamber, and the second connecting hole connects the liquid mixing chamber and the liquid outlet.

[0020] A first sealing head and a second sealing head are respectively provided on the first connecting hole and the second connecting hole. When the piston is at the bottom of the housing, the first sealing head is closed and the second sealing head is open. When the piston is at the top of the housing, the first sealing head is open and the second sealing head is closed.

[0021] Beneficial effects:

[0022] By providing a drain port on the housing, the mixing chamber can be cleaned without disassembling the proportioning pump, saving cleaning time, increasing the cleaning frequency, effectively reducing wear of impurities on the piston or housing, and extending the service life of the proportioning pump. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the proportioning pump provided for a specific embodiment of this utility model;

[0025] Figure 2 A top view of the proportioning pump provided for a specific embodiment of this utility model;

[0026] Figure 3 for Figure 2 A sectional view of “AA”;

[0027] Figure 4 for Figure 2 A cross-sectional view of “BB”.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1: Top cap; 2: Shell; 3: Piston; 4: Dosing tube; 5: Liquid inlet chamber; 6: Mixing chamber; 7: Liquid inlet; 8: Liquid outlet; 9: Drainage outlet; 10: Drug inlet channel; 11: Drug suction piston; 12: Liquid suction rod; 13: Liquid buffer chamber; 14: Temperature sensing device; 15: Bracket mounting base. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] like Figures 1 to 4 As shown, this embodiment provides a proportioning pump, which includes a top cap 1, a housing 2, a piston 3, and a dosing pipe 4.

[0034] The top cap 1 is located on the upper part of the housing 2, and the dosing tube 4 is located on the lower part of the housing 2.

[0035] The shell 2 has a hollow structure. The shell 2 is divided into an inlet chamber 5 and a mixing chamber 6. The shell 2 is provided with an upper inlet port 7 and an outlet port 8. The inlet port 7 is connected to the inlet chamber 5, and the mixing chamber 6 is connected to the outlet port 8.

[0036] The housing 2 is also provided with a drain port 9, which is connected to the mixing chamber 6.

[0037] In this embodiment, by providing a drain port 9 on the housing 2, the mixing chamber 6 can be cleaned without disassembling the proportioning pump, saving cleaning time, increasing the cleaning frequency, effectively reducing the wear of impurities on the piston 3 or housing 2, and increasing the service life of the proportioning pump.

[0038] The dosing tube 4 is provided with a drug inlet channel 10, and a drug suction piston 11 is provided in the drug inlet channel 10. The drug suction piston 11 is connected to the piston 3 through a liquid suction rod 12.

[0039] The upper end of the dosing tube 4 is provided with a liquid buffer chamber 13, the diameter of which is larger than the diameter of the drug inlet channel 10. The upper end of the liquid buffer chamber 13 is connected to the liquid inlet chamber 5, and the liquid buffer chamber 13 is connected to the drug inlet channel 10. The lower end of the drug inlet channel 10 is provided with a check valve.

[0040] In this embodiment, by setting up the liquid buffer chamber 13, compared with the proportioning pump in the prior art which only has one liquid inlet channel, there is more liquid in the liquid buffer chamber 13. During the movement of the piston 3, more liquid enters the liquid inlet chamber 5, which helps the initial mixing of the medicine and water and improves the mixing efficiency of water and medicine.

[0041] A temperature sensing device 14 is installed on the housing 2. Specifically, the temperature sensing device 14 is a temperature-sensitive color-changing device. Specifically, the color-changing device is green at room temperature, and turns red when the temperature exceeds a set value. The temperature sensing device 14 serves as a reminder to the user to avoid operating the mixing pump at high temperatures, thus reducing unnecessary losses.

[0042] The housing 2 is provided with a bracket mounting base 15, and the bracket mounting base 15 is provided with a bracket locking nut. The bracket mounting base 15 allows the proportioning pump to be conveniently installed on the proportioning pump mounting bracket.

[0043] One end of piston 3 is located in the liquid inlet chamber 5, and the other end is located in the liquid mixing chamber 6.

[0044] The piston 3 is provided with a first connecting hole and a second connecting hole. The first connecting hole connects the liquid inlet chamber 5 and the liquid mixing chamber 6, and the second connecting hole connects the liquid mixing chamber 6 and the liquid outlet 8.

[0045] A first sealing head and a second sealing head are respectively provided on the first connecting hole and the second connecting hole. When the piston 3 is at the bottom of the housing 2, the first sealing head is closed and the second sealing head is open. When the piston 3 is at the top of the housing 2, the first sealing head is open and the second sealing head is closed.

[0046] When the mixing machine is working, the piston 3 moves due to the flow of liquid. After the piston 3 moves, the first connecting hole and the second connecting hole open alternately due to the change in position, realizing the mixing of liquid and the discharge of the mixed liquid. In this process, the mixing machine works under hydrodynamic power and does not require electrical energy, which solves the problems of power consumption and inconvenient wiring in the existing technology.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A proportioning pump, characterized in that, Includes a top cap, housing, piston, and dosing tube; The top cap is located at the upper part of the housing, and the dosing tube is located at the lower part of the housing; The shell has a hollow structure, and the shell is divided into a liquid inlet chamber and a liquid mixing chamber. The shell is provided with an upper liquid inlet and a liquid outlet. The liquid inlet is connected to the liquid inlet chamber, and the liquid mixing chamber is connected to the liquid outlet. The shell is also provided with a drain port, which is connected to the mixing chamber.

2. The proportioning pump according to claim 1, characterized in that, The dosing tube is equipped with a drug inlet channel; A drug-suction piston is installed inside the drug inlet channel; The drug-absorbing piston is connected to the piston via a liquid-drawing rod.

3. The proportioning pump according to claim 2, characterized in that, The upper end of the dosing tube is provided with a liquid buffer chamber, the diameter of which is larger than the diameter of the dosing channel; The upper end of the liquid buffer chamber is connected to the liquid inlet chamber, and the liquid buffer chamber is connected to the drug inlet channel.

4. The proportioning pump according to claim 3, characterized in that, A one-way valve is installed at the lower end of the drug inlet channel.

5. The proportioning pump according to claim 1, characterized in that, A temperature sensing device is provided on the housing.

6. The proportioning pump according to claim 5, characterized in that, The temperature sensing device is a temperature-sensitive color-changing device.

7. The proportioning pump according to claim 1, characterized in that, The housing is provided with a bracket mounting base, and the bracket mounting base is provided with a bracket locking nut.

8. The proportioning pump according to claim 1, characterized in that, One end of the piston is located in the liquid inlet chamber, and the other end is located in the liquid mixing chamber; The piston is provided with a first connecting hole and a second connecting hole. The first connecting hole connects the liquid inlet chamber and the liquid mixing chamber, and the second connecting hole connects the liquid mixing chamber and the liquid outlet. A first sealing head and a second sealing head are respectively provided on the first connecting hole and the second connecting hole. When the piston is at the bottom of the housing, the first sealing head is closed and the second sealing head is open. When the piston is at the top of the housing, the first sealing head is open and the second sealing head is closed.

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