Metering device

Abstract

The utility model discloses a metering device which comprises a shell, a heat preservation cavity is formed in the shell, a stock solution tank is erected in the heat preservation cavity, a metering pump is further fixedly arranged on the bottom face of the heat preservation cavity, the metering device further comprises a discharging faucet, and an outlet of the metering pump is connected into the discharging faucet through a second discharging pipe. Due to the fact that the backflow pipe communicated with the interior of the stock solution tank is arranged in the discharging faucet, when the valve in the discharging faucet is in the closed state, if the motor is powered on, liquid in the stock solution tank can keep flowing, the phenomena of layering, sedimentation and the like are avoided, and the discharging faucet can be used for discharging the stock solution in the stock solution tank. The stability of the gushing stock solution when the valve is opened is ensured; the stock solution tank is heated through the heating sleeve, so that the stock solution can be kept at a certain temperature, in addition, heat preservation is achieved through the heat preservation layer and the ring cover on the shell, energy waste is reduced, and the stock solution is prevented from being cooled too fast in the discharging pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of raw liquid metering, in particular to a metering device. Background Art

[0002] Most chemical reagents are formed by stirring and mixing multiple chemical raw liquids or undergoing chemical reactions. The raw liquids are generally stored in raw liquid tanks. When the staff needs to mix the chemical reagents, they need to weigh the corresponding weight of the raw liquid in the raw liquid tank.

[0003] Currently, the raw liquid tank is equipped with a stirring device to prevent the raw liquid inside from stratification or sedimentation when it is left standing for a long time, and to ensure the stability of the raw liquid when weighing and proportioning. However, the stirring device requires stirring blades to be set in the raw liquid tank, which takes up space to a certain extent and increases the difficulty of cleaning the raw liquid tank. Therefore, it needs to be improved. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a metering device to solve the problems mentioned in the above background technology.

[0005] The utility model provides the following technical solution: a metering device, comprising a housing, a heat preservation chamber provided in the housing, a raw liquid tank mounted in the heat preservation chamber, a metering pump fixed on the bottom surface of the heat preservation chamber, a motor provided on the outside of the housing, an output shaft in the motor extending into the heat preservation chamber and connected to the metering pump;

[0006] It also includes a discharge faucet, which is provided with a valve. The discharge port at the bottom of the raw liquid tank is connected to the inlet of the metering pump through a No. 1 discharge pipe, and the outlet of the metering pump is connected to the discharge faucet through a No. 2 discharge pipe. The discharge faucet is also connected to the raw liquid tank through a reflux pipe. The No. 2 discharge pipe passes through the outer shell, and the reflux pipe is higher than the No. 2 discharge pipe.

[0007] Preferably, a weighing device is further provided on the outer side surface of the shell, and the weighing device is located below the discharge tap.

[0008] Preferably, a heat-insulating layer is provided on the inner side of the shell, and a constant temperature mechanism is also included to control the temperature of the raw liquid in the raw liquid tank.

[0009] Preferably, the constant temperature mechanism includes a heating jacket, and the heating jacket is placed outside the raw liquid tank.

[0010] Preferably, the heating jacket is further provided with a temperature sensing probe extending into the raw liquid tank.

[0011] Preferably, a ring cover is further included, which is sleeved on the outside of the raw liquid tank and pressed on the upper end of the shell, and a notch is provided in the ring cover for accommodating the passage of the reflux pipe.

[0012] Preferably, it further comprises a sealing cover, which covers the raw liquid tank, and a ring sleeve extending upward and attached to the outer curved surface of the raw liquid tank is provided on the inner edge of the upper side of the ring cover, and the ring sleeve abuts against the lower edge of the sealing cover.

[0013] The utility model provides a metering device, which has the following beneficial effects:

[0014] The utility model provides a reflux pipe connected to the raw liquid tank in the discharge tap. When the valve in the discharge tap is in the closed state, if the motor is energized, the liquid in the raw liquid tank will keep flowing, avoiding the phenomenon of stratification and precipitation, and ensuring the stability of the raw liquid gushing out when the valve is opened later.

[0015] The utility model also heats the raw liquid tank by a heating jacket so that the raw liquid can maintain a certain temperature. In addition, the utility model also keeps heat through the insulation layer and the ring cover on the outer shell, reducing energy waste and preventing the raw liquid from cooling down too quickly in the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0018] In the picture:

[0019] 11. Outer shell; 12. Insulation chamber; 13. Raw liquid tank; 14. Metering pump; 15. Motor; 16. Faucet; 17. Discharge pipe No. 1; 18. Discharge pipe No. 2; 19. Reflux pipe; 20. Weighing device; 21. Insulation layer; 22. Heating jacket; 23. Temperature sensor; 24. Ring cover; 25. Sealing cap; 26. Ring cover. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] Reference Figure 1-Figure 2 According to an embodiment of a metering device of the present invention, it includes a shell 11, a heat preservation chamber 12 is provided in the shell 11, a raw liquid tank 13 is mounted in the heat preservation chamber 12, a metering pump 14 is fixedly provided on the bottom surface of the heat preservation chamber 12, a motor 15 is provided on the outside of the shell 11, the output shaft in the motor 15 extends into the heat preservation chamber 12 and is connected to the metering pump 14, and further includes a discharge tap 16, the discharge port at the bottom of the raw liquid tank 13 is connected to the inlet of the metering pump 14 through a No. 1 discharge pipe 17, the outlet of the metering pump 14 is connected to the discharge tap 16 through a No. 2 discharge pipe 18, and the discharge tap 16 is also connected to the raw liquid tank 13 through a reflux pipe 19.

[0025] When the motor 15 is powered on, the raw liquid in the raw liquid tank 13 will pass through the No. 1 discharge pipe 17, the metering pump 14 and the No. 2 discharge pipe 18 and then enter the discharge tap 16. If the valve in the discharge tap 16 is in an open state at this time, the raw liquid in the No. 2 discharge pipe 18 can flow out through the discharge tap 16, and this process is recorded by the metering pump 14.

[0026] When the discharge tap 16 is in a closed state, if the motor 15 is energized, the raw liquid in the raw liquid tank 13 will flow back to the raw liquid tank 13 through the No. 1 discharge pipe 17, the metering pump 14, the No. 2 discharge pipe 18, the discharge tap 16 and the return pipe 19. This process can make the raw liquid in the raw liquid tank 13 flow, avoiding the stratification phenomenon that may occur due to long-term standing, which is equivalent to performing a stirring work in the raw liquid tank 13. The No. 2 discharge pipe 18 and the return pipe 19 are installed in such a way that the No. 2 discharge pipe 18 passes through the outer shell 11, and the return pipe 19 is higher than the No. 2 discharge pipe 18 and enters the insulation chamber 12 through the upper opening of the insulation chamber 12.

[0027] In addition, in order to facilitate the staff to weigh the appropriate weight of the raw liquid through the discharge tap 16, a weighing device 20 is also provided on the outer side of the shell 11. The weighing device 20 is located below the discharge tap 16. The staff can place the container on the weighing device 20, and then load the raw liquid through the discharge tap 16 and weigh it.

[0028] In the second embodiment of the metering device, in order to maintain the temperature of the raw liquid in the raw liquid tank 13 and reduce the required energy consumption, an insulation layer 21 is provided on the inner side of the outer shell 11, and a constant temperature mechanism is also included to control the temperature of the raw liquid in the raw liquid tank 13. The constant temperature mechanism includes a heating jacket 22, and the heating jacket 22 is put on the outside of the raw liquid tank 13.

[0029] In order to enable the heating jacket 22 to accurately control the temperature of the raw liquid in the raw liquid tank 13 , a temperature sensing probe 23 extending into the raw liquid tank 13 is further provided in the heating jacket 22 .

[0030] In addition, a ring cover 24 is included. The ring cover 24 is sleeved on the outside of the raw liquid tank 13 and pressed on the upper end of the shell 11. A notch is also provided in the ring cover 24 for accommodating the passage of the reflux pipe 19.

[0031] It also includes a sealing cover 25, which covers the raw liquid tank 13. A ring sleeve 26 extending upward and attached to the outer curved surface of the raw liquid tank 13 is provided at the inner edge of the upper side of the ring cover 24. The ring sleeve 26 is against the lower edge of the sealing cover 25. The design of the ring cover 24 and the ring sleeve 26 allows the raw liquid tank 13 to be further insulated. The ring cover 24 and the ring sleeve 26 are also provided with thermal insulation coating.

[0032] It should be additionally explained that the connection method between the No. 2 discharge pipe 18 and the return pipe 19 and the discharge tap 16 is that the discharge tap 16 includes a column and a valve, the valve is arranged in the inner cavity of the column, and the No. 2 discharge pipe 18 and the return pipe 19 are both connected to the inner cavity.

[0033] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in this field within the scope of the present invention are included in the patent scope of the present invention.

Claims

1. A metering device comprising a housing (11), characterized in that: A heat preservation chamber (12) is provided in the housing (11), a raw liquid tank (13) is mounted in the heat preservation chamber (12), a metering pump (14) is fixedly provided on the bottom surface of the heat preservation chamber (12), and a motor (15) is provided on the outside of the housing (11), an output shaft in the motor (15) extends into the heat preservation chamber (12) and is connected to the metering pump (14); The invention also includes a discharge tap (16), wherein a valve is provided in the discharge tap (16), and the discharge port at the bottom of the raw liquid tank (13) is connected to the inlet of the metering pump (14) through a No. 1 discharge pipe (17), and the outlet of the metering pump (14) is connected to the discharge tap (16) through a No. 2 discharge pipe (18), and the discharge tap (16) is also connected to the raw liquid tank (13) through a return pipe (19), and the No. 2 discharge pipe (18) passes through the shell (11), and the return pipe (19) is higher than the No. 2 discharge pipe (18).

2. A metering device according to claim 1, characterized in that: A weighing device (20) is also provided on the outer side surface of the housing (11), and the weighing device (20) is located below the discharge tap (16).

3. A metering device according to claim 1, characterized in that: The inner side of the shell (11) is provided with a heat-insulating layer (21), and also includes a temperature-regulating mechanism for controlling the temperature of the raw liquid in the raw liquid tank (13).

4. A metering device according to claim 3, characterized in that: The constant temperature mechanism comprises a heating jacket (22), and the heating jacket (22) is sheathed outside the raw liquid tank (13).

5. A metering device according to claim 4, characterized in that: A temperature sensing probe (23) extending into the raw liquid tank (13) is also provided in the heating jacket (22).

6. A metering device according to claim 1, characterized in that: It also includes a ring cover (24), which is sleeved on the outside of the raw liquid tank (13) and pressed on the upper end of the shell (11), and a notch is provided in the ring cover (24) for accommodating the passage of the reflux pipe (19).

7. A metering device according to claim 6, characterized in that: It also includes a sealing cover (25), which covers the raw liquid tank (13). A ring sleeve (26) extending upward and attached to the outer curved surface of the raw liquid tank (13) is provided at the inner edge of the upper side of the ring cover (24), and the ring sleeve (26) abuts against the lower edge of the sealing cover (25).

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