Chemical additive quantitative metering device
By introducing overflow and return pipes into the chemical additive metering device, and combining them with the automated control of level switches and return valves, the problems of complexity and insufficient accuracy of traditional chemical additive metering devices are solved, achieving accurate metering and energy saving.
Patent Information
- Application Number
- CN202422952733.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-11-28
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Traditional chemical additive metering methods suffer from problems such as cumbersome operation, complex equipment, large footprint, high investment cost, and insufficient metering accuracy.
A quantitative metering device for chemical additives is adopted, including an additive tank, a metering tank, a feed pipe, a feed pump, an overflow pipe, and a return pipe. The liquid level in the metering tank is controlled by the overflow pipe, and automated metering is achieved by using a level switch and a return valve. The bottom of the overflow pipe is connected to the return pipe to the additive tank. The pump stops and the return flows back after the level switch detects that the liquid level has reached the maximum, thus achieving accurate metering.
It enables precise metering of chemical additives, simplifies operations, reduces costs, improves metering accuracy and efficiency, and avoids energy waste.
Smart Images
Figure CN223471272U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of measuring device, specifically, relate to a kind of chemical auxiliary agent ration measuring device. BACKGROUND
[0002] In recent years, the level of industrialization of our country is continuously promoted, and the automation degree of chemical industry is also improved, and as the key link in chemical production, the application of measuring device is more and more widely, however, the traditional chemical auxiliary agent measurement mode, for example, the scheme combining with the weighing module, although it can realize higher measurement accuracy, but there are problems such as complicated operation, complex device, large floor area, high investment cost, in order to simplify the operation process, a kind of measurement scheme is appeared on the market, which installs liquid level meter on the measuring tank, the scheme can judge the injection amount of chemical auxiliary agent in the measuring tank by visual inspection of the liquid level meter, and stop injection when the liquid level in the measuring tank and the calibrated scale on the liquid level meter coincide, but due to injection inertia, a small amount of chemical auxiliary agent will still be injected into the measuring tank after the pump is stopped, which leads to the decrease of measurement accuracy, and cannot meet the high-precision measurement demand. SUMMARY
[0003] The utility model aims at overcoming the defects in prior art, and provides a kind of chemical auxiliary agent ration measuring device with simple structure, convenient operation, low cost, which can realize accurate measurement of chemical auxiliary agent.
[0004] To solve the above problems, the utility model provides a kind of chemical auxiliary agent ration measuring device, including auxiliary agent tank, measuring tank and the feed pipe and the feed pump of being communicated between the two, the bottom of measuring tank is equipped with discharge port and the switch valve for opening and closing discharge port, the top of auxiliary agent tank is equipped with backflow hole, the bottom of measuring tank is equipped with the insertion hole that is penetrated from top to bottom, insertion hole is located above backflow hole, overflow pipe is inserted in insertion hole, overflow pipe is rigid straight pipe, the outer tube wall circumferential side of overflow pipe is sealed in insertion hole, the top tube opening of overflow pipe extends into measuring tank, and is used to control the maximum liquid level height in measuring tank, backflow pipe is equipped between auxiliary agent tank and measuring tank, the bottom tube opening of overflow pipe is communicated with backflow hole through backflow pipe.
[0005] Compared with prior art, the utility model has the advantages that: the utility model sets overflow pipe in measuring tank, and connects backflow pipe, which communicates measuring tank and auxiliary agent tank, at the bottom tube opening of overflow pipe, when the chemical auxiliary agent injected into measuring tank reaches the maximum liquid level height marked by the top tube opening of overflow pipe, the chemical auxiliary agent will backflow to auxiliary agent tank through overflow pipe and backflow pipe, thereby accurate measurement of measuring tank can be realized, and the chemical auxiliary agent ration measuring device has simple structure, without additional liquid level meter and other components, easy to operate, low cost, can effectively overcome the shortcomings of prior art, improve the accuracy and efficiency of chemical auxiliary agent measurement.
[0006] As the improvement, the liquid level switch is arranged on the backflow pipe and is used to detect whether the chemical additive flows into the backflow pipe, the backflow switch valve is arranged between the liquid level switch and the additive tank and is used to open and close the backflow pipe, and the liquid level switch, the backflow switch valve and the feed pump are electrically connected with the external controller. After the structure is applied, the working principle is as follows: in the initial state, the backflow switch valve is in the closed state, the feed pump transports the chemical additive in the additive tank to the metering tank, when the chemical additive injected into the metering tank reaches the maximum liquid level height marked on the top pipe opening of the overflow pipe, the chemical additive flows into the backflow pipe through the overflow pipe, after the liquid level switch detects that the chemical additive flows into the backflow pipe, the liquid level switch sends a pump stop signal to the controller, the controller stops the feed pump from working and opens the backflow switch valve after receiving the pump stop signal, so that the excess chemical additive flows back to the additive tank, the accurate metering of the metering tank is realized, when the chemical additive does not flow into the backflow pipe, the liquid level switch sends a pump start signal to the controller, the controller starts the feed pump and closes the backflow switch valve after receiving the pump start signal, and the chemical additive continues to be transported to the metering tank, the setting of the liquid level switch and the backflow switch valve realizes the automation of metering, avoids the continuous working of the feed pump, and is beneficial to saving energy and cost.
[0007] As the improvement, the sealing ring is arranged between the overflow pipe and the insertion hole, the overflow pipe is movably arranged in the sealing ring, the outer ring of the sealing ring is fixed on the hole wall of the insertion hole, and the inner ring of the sealing ring is tightly matched with the outer side wall of the overflow pipe. After the structure is applied, the height of the top pipe opening of the overflow pipe in the metering tank can be changed by moving the overflow pipe up and down, and then the control of the maximum liquid level height of the chemical additive in the metering tank is realized, finally, the different maximum injection amounts of the chemical additive that can be injected into the metering tank are realized by controlling the different depths of the overflow pipe inserted into the metering tank, and the method for realizing the adjustable injection amount of the chemical additive injected into the metering tank has the advantages of simplicity and convenience. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0009] Figure 2 It is a partial sectional view of the overflow pipe and the sealing ring arranged in the insertion hole of the metering tank.
[0010] BRIEF DESCRIPTION OF DRAWINGS
[0011] 1, additive tank; 10, backflow hole; 2, metering tank; 20, insertion hole; 3, feed pipe; 4, feed pump; 5, overflow pipe; 6, backflow pipe; 61, liquid level switch; 62, backflow switch valve; 7, sealing ring. DETAILED DESCRIPTION
[0012] In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.
[0013] As Figure 1 shown, the chemical additive quantitative metering device comprises an additive tank 1, a metering tank 2, a feed pipe 3 communicated between the additive tank 1 and the metering tank 2, and a feed pump 4 arranged on the feed pipe 3, the bottom of the metering tank 2 is provided with a discharge port and a switch valve for opening and closing the discharge port, the top of the additive tank 1 is provided with a backflow hole 10, the bottom of the metering tank 2 is provided with an insertion hole 20 penetrating upward and downward, the insertion hole 20 is located above the backflow hole 10, an overflow pipe 5 is inserted into the insertion hole 20, the overflow pipe 5 is a rigid straight pipe, the outer wall of the overflow pipe 5 is sealingly arranged in the insertion hole 20, the top pipe opening of the overflow pipe 5 extends into the metering tank 2 and is used for controlling the maximum liquid level in the metering tank 2, a backflow pipe 6 is arranged between the additive tank 1 and the metering tank 2, and the bottom pipe opening of the overflow pipe 5 is communicated with the backflow hole 10 through the backflow pipe 6.
[0014] The present application sets the overflow pipe 5 in the metering tank 2, and connects the backflow pipe 6 communicated with the metering tank 2 and the additive tank 1 to the bottom pipe opening of the overflow pipe 5, when the chemical additive injected into the metering tank 2 reaches the maximum liquid level marked by the top pipe opening of the overflow pipe 5, the chemical additive will flow back to the additive tank 1 through the overflow pipe 5 and the backflow pipe 6, thereby realizing the accurate metering of the metering tank 2, and the present chemical additive quantitative metering device has the advantages of simple structure, no need of additional liquid level meter and other components, simple operation, easy realization, low cost, and can effectively overcome the shortcomings of the prior art and improve the accuracy and efficiency of chemical additive metering.
[0015] As Figure 1As shown, in order to realize the intelligent start and stop of the feed pump 4, save energy and use cost, the backflow pipe 6 is provided with a liquid level switch 61 and a backflow switch valve 62. The liquid level switch 61 is used to detect whether the chemical additive flows into the backflow pipe 6, and the backflow switch valve 62 is located between the liquid level switch 61 and the additive tank 1 and is used to open and close the backflow pipe 6. The liquid level switch 61, the backflow switch valve 62 and the feed pump 4 are electrically connected with the external controller. The working principle is as follows: in the initial state, the backflow switch valve 62 is in the closed state, and the feed pump 4 delivers the chemical additive in the additive tank 1 to the metering tank 2. When the chemical additive injected into the metering tank 2 reaches the maximum liquid level height marked at the top of the overflow pipe 5, the chemical additive flows into the backflow pipe 6 through the overflow pipe 5. After the liquid level switch 61 detects that the chemical additive flows into the backflow pipe 6, it sends a pump stop signal to the controller. After the controller receives the pump stop signal, it immediately stops the feed pump 4 and opens the backflow switch valve 62, so that the excess chemical additive flows back to the additive tank 1, realizing accurate metering of the metering tank 2. When there is no chemical additive flowing into the backflow pipe 6, the liquid level switch 61 sends a pump start signal to the controller. After the controller receives the pump start signal, it starts the feed pump 4 and closes the backflow switch valve 62, continuing to deliver the chemical additive to the metering tank 2. The setting of the liquid level switch 61 and the backflow switch valve 62 realizes the automation of metering, avoids the continuous work of the feed pump 4, and is beneficial to save energy and cost. In order to more accurately and timely control the chemical additive flowing into the metering tank 2 through the feed pipe 3, an automatic switch valve for opening and closing the feed inlet is usually arranged at the feed inlet of the metering tank 2. The automatic switch valve is also electrically connected with the external controller. The automatic switch valve is closed when the controller receives the pump stop signal, and the automatic switch valve is opened when the controller receives the pump start signal.
[0016] As shown in the drawings, Figure 2 In order to realize the adjustable injection amount of the chemical additive injected into the metering tank 2, a sealing ring 7 is arranged between the overflow pipe 5 and the insertion hole 20. The overflow pipe 5 can move up and down in the sealing ring 7. The outer ring of the sealing ring 7 is fixed on the hole wall of the insertion hole 20, and the inner ring of the sealing ring 7 is tightly matched with the outer side wall of the overflow pipe 5. In this way, by moving the overflow pipe 5 up and down, the height of the top of the overflow pipe 5 in the metering tank 2 can be changed, thereby realizing the control of the maximum liquid level height of the chemical additive in the metering tank 2, and finally achieving the different maximum injection amounts of the chemical additive that can be injected into the metering tank 2 by controlling the different depths of the overflow pipe 5 inserted into the metering tank 2. The method of realizing the adjustable injection amount of the chemical additive injected into the metering tank 2 has the advantages of simplicity and convenience.
[0017] Although the present disclosure discloses as above, the protection scope of the present disclosure is not limited to this. The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present disclosure.
Claims
1. A chemical additive metering device, comprising an additive tank (1), a metering tank (2), a feed pipe (3) and a feed pump (4) arranged on the feed pipe (3), the bottom of the metering tank (2) is provided with a discharge port and an on-off valve for opening and closing the discharge port, characterized in that: The top of the auxiliary agent tank (1) is provided with a backflow hole (10), the bottom of the metering tank (2) is provided with an upper and lower through insertion hole (20), the insertion hole (20) is located above the backflow hole (10), an overflow pipe (5) is inserted into the insertion hole (20), the overflow pipe (5) is a rigid straight pipe, the outer wall of the overflow pipe (5) is sealingly arranged in the insertion hole (20), the top of the overflow pipe (5) is inserted into the metering tank (2) and is used for controlling the maximum liquid level in the metering tank (2), a backflow pipe (6) is arranged between the auxiliary agent tank (1) and the metering tank (2), the bottom of the overflow pipe (5) is connected with the backflow hole (10) through the backflow pipe (6).
2. The chemical adjuvant dosing metering device according to claim 1, characterized in that: A liquid level switch (61) and a backflow switch valve (62) are arranged on the backflow pipe (6), the liquid level switch (61) is used for detecting whether the chemical auxiliary agent flows into the backflow pipe (6), the backflow switch valve (62) is located between the liquid level switch (61) and the auxiliary agent tank (1) and is used for opening and closing the backflow pipe (6), the liquid level switch (61), the backflow switch valve (62) and the material conveying pump (4) are electrically connected with an external controller.
3. The chemical adjuvant dosing metering device according to claim 1, characterized in that: A sealing ring (7) is arranged between the overflow pipe (5) and the insertion hole (20), the overflow pipe (5) is movably arranged in the sealing ring (7), the outer ring of the sealing ring (7) is fixed on the hole wall of the insertion hole (20), and the inner ring of the sealing ring (7) is tightly matched with the outer wall of the overflow pipe (5).