Liquid scale capable of feeding liquid from bottom

Abstract

According to the liquid scale with the liquid entering from the bottom provided by the utility model, the liquid entering from the metering tank can avoid the phenomena of liquid splashing and bubble generation, and the overall height of the liquid scale can be reduced, so that the space occupied by equipment is reduced. The device comprises a liquid storage tank, a rack, a heating tank and a metering system, the liquid storage tank is located above the heating tank, the metering system comprises a metering tank, a weighing sensor, a liquid inlet pipe, a first control valve arranged on the liquid inlet pipe, a liquid outlet pipe and a second control valve arranged on the liquid outlet pipe, and the metering tank is installed below the liquid storage tank through the weighing sensor. A liquid outlet of the liquid storage tank is connected with a liquid inlet of the heating tank through a valve, the top of the heating tank and the top of the metering tank are respectively provided with a ventilation port, the liquid outlet of the heating tank is connected with a liquid inlet at the bottom of the metering tank through a first control valve, the top of the metering tank is higher than the bottom of the heating tank, and the bottom of the metering system is lower than the lowest liquid level of the heating tank.

Description

Technical Field

[0001] This utility model relates to the field of liquid metering device technology, specifically a liquid scale with bottom inlet. Background Technology

[0002] In feed processing, various materials need to be mixed together according to the raw material ratio. For liquid raw materials, they can be weighed by a liquid scale and then introduced into the processing system for processing. For example, for livestock and poultry feed (such as pig feed, chicken feed, duck feed, etc.), liquid methionine, choline chloride, etc. need to be added.

[0003] Conventional liquid scales, such as Figure 1 The scale typically includes a storage tank 1, which is raised and suspended at the bottom by a frame 4. The storage tank 1 is connected to a metering tank 2 below it via a hose. The metering tank 2 is mounted on the frame 4 via a weighing sensor 3 (the weighing method is similar to an electronic crane scale). The bottom of the metering tank 2 is equipped with a liquid outlet pipe to discharge the weighed liquid. In order to ensure the normal production of feed, the liquid scale is equipped with a heating tank 6 to ensure that the liquid is at the target temperature. Therefore, the storage tank 1 of the liquid scale is first connected to the heating tank 6, and then the heated liquid is input into the metering tank 2 for weighing through the outlet 6-1 at the bottom of the heating tank 6.

[0004] Because pressure difference is required to allow liquid to flow into metering tank 2, the hose connecting the outlet 6-1 of heating tank 6 is connected to the top of metering tank 2, making the top of metering tank 2 lower than the bottom of heating tank 6. This leads to the following drawbacks of the liquid scale: 1. Liquid splashing: Liquid easily splashes during filling, causing waste and contamination; 2. Bubble generation: Liquid entering from a height easily generates bubbles, affecting measurement accuracy. One existing solution to these problems is... Figure 2 As shown, the inlet pipe 100 is extended so that the outlet of the inlet pipe is located near the bottom inside the liquid scale. Another solution is as follows: Figure 3 As shown, a conical buffer 200 is added at the outlet of the liquid inlet pipe. However, none of the above structures can reduce the height of the equipment, resulting in the equipment occupying a large space. Utility Model Content

[0005] To address the problems of conventional liquid scales, such as liquid splashing, bubble formation, and large space occupation, this invention provides a bottom-entry liquid scale. The liquid inlet of the measuring tank can avoid liquid splashing and bubble formation, and can also reduce the overall height of the liquid scale, thereby reducing the space occupied by the equipment.

[0006] The technical solution is as follows: A bottom-inlet liquid scale includes a storage tank, a frame, a heating tank, and a metering system. The storage tank is located above the heating tank. The metering system includes a metering tank, a weighing sensor, an inlet pipe, a first control valve on the inlet pipe, an outlet pipe, and a second control valve on the outlet pipe. The metering tank is installed below the storage tank via the weighing sensor. The outlet of the storage tank is connected to the inlet of the heating tank via a valve. The tops of the heating tank and the metering tank are respectively provided with vents. The characteristic feature is that the outlet of the heating tank is connected to the inlet at the bottom of the metering tank via the first control valve. The top of the metering tank is higher than the bottom of the heating tank, and the bottom of the metering system is lower than the lowest liquid level of the heating tank.

[0007] Furthermore, the bottom of the metering tank is lower than the lowest liquid level of the heating tank.

[0008] Furthermore, the upper section of the measuring tank is a cylindrical body, the lower section of the measuring tank is an inverted cone, and a lifting lug is provided on the outer periphery of the cylindrical body, the lifting lug being connected to the weighing sensor.

[0009] Furthermore, the heating tank is a cylindrical body, a heating rod is installed at the top center of the heating tank, and a temperature sensor is provided in the lower middle part of the heating tank.

[0010] Beneficial effects: Liquid enters the metering tank from the bottom, which not only avoids liquid splashing, reducing waste and pollution, but also reduces the generation of bubbles, thereby improving measurement accuracy. In addition, it reduces the height of the equipment, thereby reducing the space occupied by the equipment. Moreover, compared with the existing device, there is no need to extend the pipe to the bottom of the metering tank or to install an additional conical buffer. This solution has a simpler structure and is easier to install. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a conventional liquid scale;

[0012] Figure 2 This is a schematic diagram of the structure of an existing liquid scale;

[0013] Figure 3 This is a schematic diagram of another existing liquid scale.

[0014] Figure 4 This is a schematic diagram of the structure of this utility model;

[0015] Figure 5 This is a schematic diagram of the metering system.

[0016] Figure 6 This is a schematic diagram of the heating tank.

[0017] Figure 7 This is a schematic diagram of the top of the metering tank.

[0018] In the diagram, 1. Storage tank, 1-1. Storage tank outlet, 2. Metering tank, 2-1. Metering system inlet, 2-2. Metering system outlet, 2-3. Vent cap, 2-4. Lifting lug, 3. Weighing sensor, 4. Frame, 5. Storage tank outlet pipe, 6. Heating tank, 6-1. Heating tank inlet, 6-2. Heating rod, 6-3. Temperature sensor, 6-4. Heating tank outlet, 7. Heating tank outlet pipe, 8. Control valve one, 9. Control valve two. Detailed Implementation

[0019] like Figure 4 The liquid scale shown includes a bottom-inlet type, comprising a storage tank 1, a frame 4, a heating tank 6, and a metering system. The storage tank 1 is located above the heating tank 6. Figure 5 The metering system specifically includes a metering tank 2, a weighing sensor 3, an inlet pipe, a control valve 8 on the inlet pipe, an outlet pipe, and a control valve 9 on the outlet pipe. The metering tank 2 is installed below the storage tank 1 via the weighing sensor 3. The installation method can be the existing suspension method, or it can be weighed by pressing the metering tank 2 against the weighing sensor 3. The outlet 1-1 of the storage tank is connected to the inlet 6-1 of the heating tank via a valve integrated into the outlet of the storage tank 1. The tops of the heating tank 6 and the metering tank 2 are respectively equipped with vents (specifically, […]). Figure 5 The vent cap 2-3 in the metering tank and the outlet 6-4 of the heating tank are connected to the inlet at the bottom of the metering tank through the control valve 8. The top of the metering tank 2 is higher than the bottom of the heating tank 6, and the bottom of the metering system is lower than the lowest liquid level of the heating tank 6.

[0020] In use, the valve of the storage tank 1 is opened to allow the stored liquid to flow into the heating tank 6. The heating tank 6 heats the liquid to the specified temperature. Then, control valve 8 is opened to allow the liquid in the heating tank 6 to enter the metering system. When the metering system reaches the target weight, control valve 8 is closed and control valve 9 is opened to allow the liquid of the target weight to be introduced into the feed processing system for processing. Since the outlet 6-4 of the heating tank is connected to the inlet at the bottom of the metering tank through control valve 8, bottom entry of the metering tank avoids the phenomenon of bubbles and liquid splashing caused by top entry. At the same time, since the top of the metering tank 2 is higher than the bottom of the heating tank 6, the overall height of the equipment can be reduced and the space occupied can be reduced by using the same specification metering tank 2. As for the bottom of the metering system being lower than the minimum liquid level of the heating tank 6, this is because when the liquid enters the bottom pipe of the metering tank 2 in the metering system, it will be weighed by the weighing sensor 3. Therefore, it is only necessary to make the bottom of the metering system lower than the minimum liquid level of the heating tank 6 to rely on the pressure difference to allow the liquid in the heating tank 6 to enter the metering system for weight calculation. Of course, as a preferred option, the bottom of the metering tank 2 can be made lower than the minimum liquid level of the heating tank 6. In addition, the weight of each component can be avoided by removing the tare weight when no liquid is injected. It is also worth mentioning that since the proportions of each raw material in feed processing are generally within a range, a small amount of liquid remaining in the weighing system pipeline will not affect the feed processing and production.

[0021] As one specific implementation of the above solution, combined with Figure 4 The storage tank 1 can be a standard IBC container for storing liquids, and the liquid outlet of the storage tank 1 is equipped with a valve. The liquid outlet pipe 5 of the storage tank is a stainless steel pipe with quick-release clamps at both ends. One end is connected to the liquid storage port 1-1 of the storage tank, and the other end is connected to the liquid inlet 6-1 of the heating tank.

[0022] The frame 4 is made of square tubes and consists of two layers. The top of the upper layer is used to place the liquid storage tank 1 and suspend the weighing sensor. There are three weighing sensor suspension points, which are evenly distributed around the circumference. The left side of the lower layer is used to place the heating tank 6.

[0023] Combination Figure 6 The heating tank 6 is a cylindrical body. A heating rod 6-2 is installed at the center of the top of the heating tank 6. A vent cap is installed on the right side of the heating rod 6. The heating tank inlet 6-1 is located on the left side of the tank near the top cover. A temperature sensor 6-3 is installed on the left side of the tank at about 1 / 3 of the tank height from bottom to top. The heating tank outlet 6-4 is located on the right side of the tank near the bottom plate. The heating tank outlet 6-4 is connected to the heating tank outlet pipe 7.

[0024] Combination Figure 5 , Figure 7The upper section of the metering tank 2 is a cylindrical body, and the lower section of the metering tank 2 is an inverted cone. The outer periphery of the cylindrical body is provided with a lifting lug 2-4, which is used to suspend the weighing sensor 3. The center of the top cover is a vent cap 2-3. The lowest point of the metering system has two interfaces, one of which is the metering system inlet 2-1, where a control valve 8 is installed; the other is the metering system outlet 2-2, where a control valve 9 is installed. The inlet and outlet are connected to the system with a flexible hose.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A bottom liquid feeding liquid scale, comprising a liquid storage tank, a rack, a heating tank, a metering system, the liquid storage tank is located above the heating tank, the metering system comprises a metering tank, a weighing sensor, a liquid inlet pipe, a control valve one arranged on the liquid inlet pipe, a liquid outlet pipe, a control valve two arranged on the liquid outlet pipe, the metering tank is installed below the liquid storage tank through the weighing sensor, the liquid outlet of the liquid storage tank is connected with the liquid inlet of the heating tank through a valve, and the top of the heating tank and the top of the metering tank are respectively provided with a gas permeation port. The liquid outlet of the heating tank is connected with the liquid inlet of the bottom of the metering tank through the control valve, the top of the metering tank is higher than the bottom of the heating tank, and the bottom of the metering system is lower than the lowest liquid level of the heating tank.

2. A liquid balance with bottom liquid inlet according to claim 1, characterized in that: The bottom of the metering tank is lower than the lowest liquid level of the heating tank.

3. A liquid balance with bottom liquid inlet according to claim 1 or 2, characterized in that: The upper section of the metering tank is a cylindrical barrel, the lower section of the metering tank is an inverted cone, the outer side of the cylindrical barrel is provided with a lifting lug, and the lifting lug is connected with the weighing sensor.

4. A liquid balance with bottom liquid inlet according to claim 1 or 2, characterized in that: The heating tank is a cylindrical barrel, a heating rod is installed at the center of the top of the heating tank, and a temperature sensor is arranged at the middle and lower part of the heating tank.

Images